| 1 | /* |
| 2 | * Jexer - Java Text User Interface |
| 3 | * |
| 4 | * The MIT License (MIT) |
| 5 | * |
| 6 | * Copyright (C) 2019 Kevin Lamonte |
| 7 | * |
| 8 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 9 | * copy of this software and associated documentation files (the "Software"), |
| 10 | * to deal in the Software without restriction, including without limitation |
| 11 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 12 | * and/or sell copies of the Software, and to permit persons to whom the |
| 13 | * Software is furnished to do so, subject to the following conditions: |
| 14 | * |
| 15 | * The above copyright notice and this permission notice shall be included in |
| 16 | * all copies or substantial portions of the Software. |
| 17 | * |
| 18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 20 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 21 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 22 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 23 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| 24 | * DEALINGS IN THE SOFTWARE. |
| 25 | * |
| 26 | * @author Kevin Lamonte [kevin.lamonte@gmail.com] |
| 27 | * @version 1 |
| 28 | */ |
| 29 | package jexer.backend; |
| 30 | |
| 31 | import java.awt.image.BufferedImage; |
| 32 | import java.io.BufferedReader; |
| 33 | import java.io.ByteArrayOutputStream; |
| 34 | import java.io.FileDescriptor; |
| 35 | import java.io.FileInputStream; |
| 36 | import java.io.InputStream; |
| 37 | import java.io.InputStreamReader; |
| 38 | import java.io.IOException; |
| 39 | import java.io.OutputStream; |
| 40 | import java.io.OutputStreamWriter; |
| 41 | import java.io.PrintWriter; |
| 42 | import java.io.Reader; |
| 43 | import java.io.UnsupportedEncodingException; |
| 44 | import java.util.ArrayList; |
| 45 | import java.util.Collections; |
| 46 | import java.util.HashMap; |
| 47 | import java.util.List; |
| 48 | import javax.imageio.ImageIO; |
| 49 | |
| 50 | import jexer.TImage; |
| 51 | import jexer.bits.Cell; |
| 52 | import jexer.bits.CellAttributes; |
| 53 | import jexer.bits.Color; |
| 54 | import jexer.event.TCommandEvent; |
| 55 | import jexer.event.TInputEvent; |
| 56 | import jexer.event.TKeypressEvent; |
| 57 | import jexer.event.TMouseEvent; |
| 58 | import jexer.event.TResizeEvent; |
| 59 | import static jexer.TCommand.*; |
| 60 | import static jexer.TKeypress.*; |
| 61 | |
| 62 | /** |
| 63 | * This class reads keystrokes and mouse events and emits output to ANSI |
| 64 | * X3.64 / ECMA-48 type terminals e.g. xterm, linux, vt100, ansi.sys, etc. |
| 65 | */ |
| 66 | public class ECMA48Terminal extends LogicalScreen |
| 67 | implements TerminalReader, Runnable { |
| 68 | |
| 69 | // ------------------------------------------------------------------------ |
| 70 | // Constants -------------------------------------------------------------- |
| 71 | // ------------------------------------------------------------------------ |
| 72 | |
| 73 | /** |
| 74 | * States in the input parser. |
| 75 | */ |
| 76 | private enum ParseState { |
| 77 | GROUND, |
| 78 | ESCAPE, |
| 79 | ESCAPE_INTERMEDIATE, |
| 80 | CSI_ENTRY, |
| 81 | CSI_PARAM, |
| 82 | MOUSE, |
| 83 | MOUSE_SGR, |
| 84 | } |
| 85 | |
| 86 | /** |
| 87 | * Available Jexer images support. |
| 88 | */ |
| 89 | private enum JexerImageOption { |
| 90 | DISABLED, |
| 91 | JPG, |
| 92 | PNG, |
| 93 | RGB, |
| 94 | } |
| 95 | |
| 96 | // ------------------------------------------------------------------------ |
| 97 | // Variables -------------------------------------------------------------- |
| 98 | // ------------------------------------------------------------------------ |
| 99 | |
| 100 | /** |
| 101 | * Emit debugging to stderr. |
| 102 | */ |
| 103 | private boolean debugToStderr = false; |
| 104 | |
| 105 | /** |
| 106 | * If true, emit T.416-style RGB colors for normal system colors. This |
| 107 | * is a) expensive in bandwidth, and b) potentially terrible looking for |
| 108 | * non-xterms. |
| 109 | */ |
| 110 | private static boolean doRgbColor = false; |
| 111 | |
| 112 | /** |
| 113 | * The session information. |
| 114 | */ |
| 115 | private SessionInfo sessionInfo; |
| 116 | |
| 117 | /** |
| 118 | * The event queue, filled up by a thread reading on input. |
| 119 | */ |
| 120 | private List<TInputEvent> eventQueue; |
| 121 | |
| 122 | /** |
| 123 | * If true, we want the reader thread to exit gracefully. |
| 124 | */ |
| 125 | private boolean stopReaderThread; |
| 126 | |
| 127 | /** |
| 128 | * The reader thread. |
| 129 | */ |
| 130 | private Thread readerThread; |
| 131 | |
| 132 | /** |
| 133 | * Parameters being collected. E.g. if the string is \033[1;3m, then |
| 134 | * params[0] will be 1 and params[1] will be 3. |
| 135 | */ |
| 136 | private List<String> params; |
| 137 | |
| 138 | /** |
| 139 | * Current parsing state. |
| 140 | */ |
| 141 | private ParseState state; |
| 142 | |
| 143 | /** |
| 144 | * The time we entered ESCAPE. If we get a bare escape without a code |
| 145 | * following it, this is used to return that bare escape. |
| 146 | */ |
| 147 | private long escapeTime; |
| 148 | |
| 149 | /** |
| 150 | * The time we last checked the window size. We try not to spawn stty |
| 151 | * more than once per second. |
| 152 | */ |
| 153 | private long windowSizeTime; |
| 154 | |
| 155 | /** |
| 156 | * true if mouse1 was down. Used to report mouse1 on the release event. |
| 157 | */ |
| 158 | private boolean mouse1; |
| 159 | |
| 160 | /** |
| 161 | * true if mouse2 was down. Used to report mouse2 on the release event. |
| 162 | */ |
| 163 | private boolean mouse2; |
| 164 | |
| 165 | /** |
| 166 | * true if mouse3 was down. Used to report mouse3 on the release event. |
| 167 | */ |
| 168 | private boolean mouse3; |
| 169 | |
| 170 | /** |
| 171 | * Cache the cursor visibility value so we only emit the sequence when we |
| 172 | * need to. |
| 173 | */ |
| 174 | private boolean cursorOn = true; |
| 175 | |
| 176 | /** |
| 177 | * Cache the last window size to figure out if a TResizeEvent needs to be |
| 178 | * generated. |
| 179 | */ |
| 180 | private TResizeEvent windowResize = null; |
| 181 | |
| 182 | /** |
| 183 | * If true, emit wide-char (CJK/Emoji) characters as sixel images. |
| 184 | */ |
| 185 | private boolean wideCharImages = true; |
| 186 | |
| 187 | /** |
| 188 | * Window width in pixels. Used for sixel support. |
| 189 | */ |
| 190 | private int widthPixels = 640; |
| 191 | |
| 192 | /** |
| 193 | * Window height in pixels. Used for sixel support. |
| 194 | */ |
| 195 | private int heightPixels = 400; |
| 196 | |
| 197 | /** |
| 198 | * If true, emit image data via sixel. |
| 199 | */ |
| 200 | private boolean sixel = true; |
| 201 | |
| 202 | /** |
| 203 | * If true, use a single shared palette for sixel. |
| 204 | */ |
| 205 | private boolean sixelSharedPalette = true; |
| 206 | |
| 207 | /** |
| 208 | * The sixel palette handler. |
| 209 | */ |
| 210 | private SixelPalette palette = null; |
| 211 | |
| 212 | /** |
| 213 | * The sixel post-rendered string cache. |
| 214 | */ |
| 215 | private ImageCache sixelCache = null; |
| 216 | |
| 217 | /** |
| 218 | * Number of colors in the sixel palette. Xterm 335 defines the max as |
| 219 | * 1024. Valid values are: 2 (black and white), 256, 512, 1024, and |
| 220 | * 2048. |
| 221 | */ |
| 222 | private int sixelPaletteSize = 1024; |
| 223 | |
| 224 | /** |
| 225 | * If true, emit image data via iTerm2 image protocol. |
| 226 | */ |
| 227 | private boolean iterm2Images = false; |
| 228 | |
| 229 | /** |
| 230 | * The iTerm2 post-rendered string cache. |
| 231 | */ |
| 232 | private ImageCache iterm2Cache = null; |
| 233 | |
| 234 | /** |
| 235 | * If not DISABLED, emit image data via Jexer image protocol if the |
| 236 | * terminal supports it. |
| 237 | */ |
| 238 | private JexerImageOption jexerImageOption = JexerImageOption.JPG; |
| 239 | |
| 240 | /** |
| 241 | * The Jexer post-rendered string cache. |
| 242 | */ |
| 243 | private ImageCache jexerCache = null; |
| 244 | |
| 245 | /** |
| 246 | * Base64 encoder used by iTerm2 and Jexer images. |
| 247 | */ |
| 248 | private java.util.Base64.Encoder base64 = null; |
| 249 | |
| 250 | /** |
| 251 | * If true, then we changed System.in and need to change it back. |
| 252 | */ |
| 253 | private boolean setRawMode = false; |
| 254 | |
| 255 | /** |
| 256 | * If true, '?' was seen in terminal response. |
| 257 | */ |
| 258 | private boolean decPrivateModeFlag = false; |
| 259 | |
| 260 | /** |
| 261 | * The terminal's input. If an InputStream is not specified in the |
| 262 | * constructor, then this InputStreamReader will be bound to System.in |
| 263 | * with UTF-8 encoding. |
| 264 | */ |
| 265 | private Reader input; |
| 266 | |
| 267 | /** |
| 268 | * The terminal's raw InputStream. If an InputStream is not specified in |
| 269 | * the constructor, then this InputReader will be bound to System.in. |
| 270 | * This is used by run() to see if bytes are available() before calling |
| 271 | * (Reader)input.read(). |
| 272 | */ |
| 273 | private InputStream inputStream; |
| 274 | |
| 275 | /** |
| 276 | * The terminal's output. If an OutputStream is not specified in the |
| 277 | * constructor, then this PrintWriter will be bound to System.out with |
| 278 | * UTF-8 encoding. |
| 279 | */ |
| 280 | private PrintWriter output; |
| 281 | |
| 282 | /** |
| 283 | * The listening object that run() wakes up on new input. |
| 284 | */ |
| 285 | private Object listener; |
| 286 | |
| 287 | // Colors to map DOS colors to AWT colors. |
| 288 | private static java.awt.Color MYBLACK; |
| 289 | private static java.awt.Color MYRED; |
| 290 | private static java.awt.Color MYGREEN; |
| 291 | private static java.awt.Color MYYELLOW; |
| 292 | private static java.awt.Color MYBLUE; |
| 293 | private static java.awt.Color MYMAGENTA; |
| 294 | private static java.awt.Color MYCYAN; |
| 295 | private static java.awt.Color MYWHITE; |
| 296 | private static java.awt.Color MYBOLD_BLACK; |
| 297 | private static java.awt.Color MYBOLD_RED; |
| 298 | private static java.awt.Color MYBOLD_GREEN; |
| 299 | private static java.awt.Color MYBOLD_YELLOW; |
| 300 | private static java.awt.Color MYBOLD_BLUE; |
| 301 | private static java.awt.Color MYBOLD_MAGENTA; |
| 302 | private static java.awt.Color MYBOLD_CYAN; |
| 303 | private static java.awt.Color MYBOLD_WHITE; |
| 304 | |
| 305 | /** |
| 306 | * SixelPalette is used to manage the conversion of images between 24-bit |
| 307 | * RGB color and a palette of sixelPaletteSize colors. |
| 308 | */ |
| 309 | private class SixelPalette { |
| 310 | |
| 311 | /** |
| 312 | * Color palette for sixel output, sorted low to high. |
| 313 | */ |
| 314 | private List<Integer> rgbColors = new ArrayList<Integer>(); |
| 315 | |
| 316 | /** |
| 317 | * Map of color palette index for sixel output, from the order it was |
| 318 | * generated by makePalette() to rgbColors. |
| 319 | */ |
| 320 | private int [] rgbSortedIndex = new int[sixelPaletteSize]; |
| 321 | |
| 322 | /** |
| 323 | * The color palette, organized by hue, saturation, and luminance. |
| 324 | * This is used for a fast color match. |
| 325 | */ |
| 326 | private ArrayList<ArrayList<ArrayList<ColorIdx>>> hslColors; |
| 327 | |
| 328 | /** |
| 329 | * Number of bits for hue. |
| 330 | */ |
| 331 | private int hueBits = -1; |
| 332 | |
| 333 | /** |
| 334 | * Number of bits for saturation. |
| 335 | */ |
| 336 | private int satBits = -1; |
| 337 | |
| 338 | /** |
| 339 | * Number of bits for luminance. |
| 340 | */ |
| 341 | private int lumBits = -1; |
| 342 | |
| 343 | /** |
| 344 | * Step size for hue bins. |
| 345 | */ |
| 346 | private int hueStep = -1; |
| 347 | |
| 348 | /** |
| 349 | * Step size for saturation bins. |
| 350 | */ |
| 351 | private int satStep = -1; |
| 352 | |
| 353 | /** |
| 354 | * Cached RGB to HSL result. |
| 355 | */ |
| 356 | private int hsl[] = new int[3]; |
| 357 | |
| 358 | /** |
| 359 | * ColorIdx records a RGB color and its palette index. |
| 360 | */ |
| 361 | private class ColorIdx { |
| 362 | /** |
| 363 | * The 24-bit RGB color. |
| 364 | */ |
| 365 | public int color; |
| 366 | |
| 367 | /** |
| 368 | * The palette index for this color. |
| 369 | */ |
| 370 | public int index; |
| 371 | |
| 372 | /** |
| 373 | * Public constructor. |
| 374 | * |
| 375 | * @param color the 24-bit RGB color |
| 376 | * @param index the palette index for this color |
| 377 | */ |
| 378 | public ColorIdx(final int color, final int index) { |
| 379 | this.color = color; |
| 380 | this.index = index; |
| 381 | } |
| 382 | } |
| 383 | |
| 384 | /** |
| 385 | * Public constructor. |
| 386 | */ |
| 387 | public SixelPalette() { |
| 388 | makePalette(); |
| 389 | } |
| 390 | |
| 391 | /** |
| 392 | * Find the nearest match for a color in the palette. |
| 393 | * |
| 394 | * @param color the RGB color |
| 395 | * @return the index in rgbColors that is closest to color |
| 396 | */ |
| 397 | public int matchColor(final int color) { |
| 398 | |
| 399 | assert (color >= 0); |
| 400 | |
| 401 | /* |
| 402 | * matchColor() is a critical performance bottleneck. To make it |
| 403 | * decent, we do the following: |
| 404 | * |
| 405 | * 1. Find the nearest two hues that bracket this color. |
| 406 | * |
| 407 | * 2. Find the nearest two saturations that bracket this color. |
| 408 | * |
| 409 | * 3. Iterate within these four bands of luminance values, |
| 410 | * returning the closest color by Euclidean distance. |
| 411 | * |
| 412 | * This strategy reduces the search space by about 97%. |
| 413 | */ |
| 414 | int red = (color >>> 16) & 0xFF; |
| 415 | int green = (color >>> 8) & 0xFF; |
| 416 | int blue = color & 0xFF; |
| 417 | |
| 418 | if (sixelPaletteSize == 2) { |
| 419 | if (((red * red) + (green * green) + (blue * blue)) < 35568) { |
| 420 | // Black |
| 421 | return 0; |
| 422 | } |
| 423 | // White |
| 424 | return 1; |
| 425 | } |
| 426 | |
| 427 | |
| 428 | rgbToHsl(red, green, blue, hsl); |
| 429 | int hue = hsl[0]; |
| 430 | int sat = hsl[1]; |
| 431 | int lum = hsl[2]; |
| 432 | // System.err.printf("%d %d %d\n", hue, sat, lum); |
| 433 | |
| 434 | double diff = Double.MAX_VALUE; |
| 435 | int idx = -1; |
| 436 | |
| 437 | int hue1 = hue / (360/hueStep); |
| 438 | int hue2 = hue1 + 1; |
| 439 | if (hue1 >= hslColors.size() - 1) { |
| 440 | // Bracket pure red from above. |
| 441 | hue1 = hslColors.size() - 1; |
| 442 | hue2 = 0; |
| 443 | } else if (hue1 == 0) { |
| 444 | // Bracket pure red from below. |
| 445 | hue2 = hslColors.size() - 1; |
| 446 | } |
| 447 | |
| 448 | for (int hI = hue1; hI != -1;) { |
| 449 | ArrayList<ArrayList<ColorIdx>> sats = hslColors.get(hI); |
| 450 | if (hI == hue1) { |
| 451 | hI = hue2; |
| 452 | } else if (hI == hue2) { |
| 453 | hI = -1; |
| 454 | } |
| 455 | |
| 456 | int sMin = (sat / satStep) - 1; |
| 457 | int sMax = sMin + 1; |
| 458 | if (sMin < 0) { |
| 459 | sMin = 0; |
| 460 | sMax = 1; |
| 461 | } else if (sMin == sats.size() - 1) { |
| 462 | sMax = sMin; |
| 463 | sMin--; |
| 464 | } |
| 465 | assert (sMin >= 0); |
| 466 | assert (sMax - sMin == 1); |
| 467 | |
| 468 | // int sMin = 0; |
| 469 | // int sMax = sats.size() - 1; |
| 470 | |
| 471 | for (int sI = sMin; sI <= sMax; sI++) { |
| 472 | ArrayList<ColorIdx> lums = sats.get(sI); |
| 473 | |
| 474 | // True 3D colorspace match for the remaining values |
| 475 | for (ColorIdx c: lums) { |
| 476 | int rgbColor = c.color; |
| 477 | double newDiff = 0; |
| 478 | int red2 = (rgbColor >>> 16) & 0xFF; |
| 479 | int green2 = (rgbColor >>> 8) & 0xFF; |
| 480 | int blue2 = rgbColor & 0xFF; |
| 481 | newDiff += Math.pow(red2 - red, 2); |
| 482 | newDiff += Math.pow(green2 - green, 2); |
| 483 | newDiff += Math.pow(blue2 - blue, 2); |
| 484 | if (newDiff < diff) { |
| 485 | idx = rgbSortedIndex[c.index]; |
| 486 | diff = newDiff; |
| 487 | } |
| 488 | } |
| 489 | } |
| 490 | } |
| 491 | |
| 492 | if (((red * red) + (green * green) + (blue * blue)) < diff) { |
| 493 | // Black is a closer match. |
| 494 | idx = 0; |
| 495 | } else if ((((255 - red) * (255 - red)) + |
| 496 | ((255 - green) * (255 - green)) + |
| 497 | ((255 - blue) * (255 - blue))) < diff) { |
| 498 | |
| 499 | // White is a closer match. |
| 500 | idx = sixelPaletteSize - 1; |
| 501 | } |
| 502 | assert (idx != -1); |
| 503 | return idx; |
| 504 | } |
| 505 | |
| 506 | /** |
| 507 | * Clamp an int value to [0, 255]. |
| 508 | * |
| 509 | * @param x the int value |
| 510 | * @return an int between 0 and 255. |
| 511 | */ |
| 512 | private int clamp(final int x) { |
| 513 | if (x < 0) { |
| 514 | return 0; |
| 515 | } |
| 516 | if (x > 255) { |
| 517 | return 255; |
| 518 | } |
| 519 | return x; |
| 520 | } |
| 521 | |
| 522 | /** |
| 523 | * Dither an image to a sixelPaletteSize palette. The dithered |
| 524 | * image cells will contain indexes into the palette. |
| 525 | * |
| 526 | * @param image the image to dither |
| 527 | * @return the dithered image. Every pixel is an index into the |
| 528 | * palette. |
| 529 | */ |
| 530 | public BufferedImage ditherImage(final BufferedImage image) { |
| 531 | |
| 532 | BufferedImage ditheredImage = new BufferedImage(image.getWidth(), |
| 533 | image.getHeight(), BufferedImage.TYPE_INT_ARGB); |
| 534 | |
| 535 | int [] rgbArray = image.getRGB(0, 0, image.getWidth(), |
| 536 | image.getHeight(), null, 0, image.getWidth()); |
| 537 | ditheredImage.setRGB(0, 0, image.getWidth(), image.getHeight(), |
| 538 | rgbArray, 0, image.getWidth()); |
| 539 | |
| 540 | for (int imageY = 0; imageY < image.getHeight(); imageY++) { |
| 541 | for (int imageX = 0; imageX < image.getWidth(); imageX++) { |
| 542 | int oldPixel = ditheredImage.getRGB(imageX, |
| 543 | imageY) & 0xFFFFFF; |
| 544 | int colorIdx = matchColor(oldPixel); |
| 545 | assert (colorIdx >= 0); |
| 546 | assert (colorIdx < sixelPaletteSize); |
| 547 | int newPixel = rgbColors.get(colorIdx); |
| 548 | ditheredImage.setRGB(imageX, imageY, colorIdx); |
| 549 | |
| 550 | int oldRed = (oldPixel >>> 16) & 0xFF; |
| 551 | int oldGreen = (oldPixel >>> 8) & 0xFF; |
| 552 | int oldBlue = oldPixel & 0xFF; |
| 553 | |
| 554 | int newRed = (newPixel >>> 16) & 0xFF; |
| 555 | int newGreen = (newPixel >>> 8) & 0xFF; |
| 556 | int newBlue = newPixel & 0xFF; |
| 557 | |
| 558 | int redError = (oldRed - newRed) / 16; |
| 559 | int greenError = (oldGreen - newGreen) / 16; |
| 560 | int blueError = (oldBlue - newBlue) / 16; |
| 561 | |
| 562 | int red, green, blue; |
| 563 | if (imageX < image.getWidth() - 1) { |
| 564 | int pXpY = ditheredImage.getRGB(imageX + 1, imageY); |
| 565 | red = ((pXpY >>> 16) & 0xFF) + (7 * redError); |
| 566 | green = ((pXpY >>> 8) & 0xFF) + (7 * greenError); |
| 567 | blue = ( pXpY & 0xFF) + (7 * blueError); |
| 568 | red = clamp(red); |
| 569 | green = clamp(green); |
| 570 | blue = clamp(blue); |
| 571 | pXpY = ((red & 0xFF) << 16); |
| 572 | pXpY |= ((green & 0xFF) << 8) | (blue & 0xFF); |
| 573 | ditheredImage.setRGB(imageX + 1, imageY, pXpY); |
| 574 | |
| 575 | if (imageY < image.getHeight() - 1) { |
| 576 | int pXpYp = ditheredImage.getRGB(imageX + 1, |
| 577 | imageY + 1); |
| 578 | red = ((pXpYp >>> 16) & 0xFF) + redError; |
| 579 | green = ((pXpYp >>> 8) & 0xFF) + greenError; |
| 580 | blue = ( pXpYp & 0xFF) + blueError; |
| 581 | red = clamp(red); |
| 582 | green = clamp(green); |
| 583 | blue = clamp(blue); |
| 584 | pXpYp = ((red & 0xFF) << 16); |
| 585 | pXpYp |= ((green & 0xFF) << 8) | (blue & 0xFF); |
| 586 | ditheredImage.setRGB(imageX + 1, imageY + 1, pXpYp); |
| 587 | } |
| 588 | } else if (imageY < image.getHeight() - 1) { |
| 589 | int pXmYp = ditheredImage.getRGB(imageX - 1, |
| 590 | imageY + 1); |
| 591 | int pXYp = ditheredImage.getRGB(imageX, |
| 592 | imageY + 1); |
| 593 | |
| 594 | red = ((pXmYp >>> 16) & 0xFF) + (3 * redError); |
| 595 | green = ((pXmYp >>> 8) & 0xFF) + (3 * greenError); |
| 596 | blue = ( pXmYp & 0xFF) + (3 * blueError); |
| 597 | red = clamp(red); |
| 598 | green = clamp(green); |
| 599 | blue = clamp(blue); |
| 600 | pXmYp = ((red & 0xFF) << 16); |
| 601 | pXmYp |= ((green & 0xFF) << 8) | (blue & 0xFF); |
| 602 | ditheredImage.setRGB(imageX - 1, imageY + 1, pXmYp); |
| 603 | |
| 604 | red = ((pXYp >>> 16) & 0xFF) + (5 * redError); |
| 605 | green = ((pXYp >>> 8) & 0xFF) + (5 * greenError); |
| 606 | blue = ( pXYp & 0xFF) + (5 * blueError); |
| 607 | red = clamp(red); |
| 608 | green = clamp(green); |
| 609 | blue = clamp(blue); |
| 610 | pXYp = ((red & 0xFF) << 16); |
| 611 | pXYp |= ((green & 0xFF) << 8) | (blue & 0xFF); |
| 612 | ditheredImage.setRGB(imageX, imageY + 1, pXYp); |
| 613 | } |
| 614 | } // for (int imageY = 0; imageY < image.getHeight(); imageY++) |
| 615 | } // for (int imageX = 0; imageX < image.getWidth(); imageX++) |
| 616 | |
| 617 | return ditheredImage; |
| 618 | } |
| 619 | |
| 620 | /** |
| 621 | * Convert an RGB color to HSL. |
| 622 | * |
| 623 | * @param red red color, between 0 and 255 |
| 624 | * @param green green color, between 0 and 255 |
| 625 | * @param blue blue color, between 0 and 255 |
| 626 | * @param hsl the hsl color as [hue, saturation, luminance] |
| 627 | */ |
| 628 | private void rgbToHsl(final int red, final int green, |
| 629 | final int blue, final int [] hsl) { |
| 630 | |
| 631 | assert ((red >= 0) && (red <= 255)); |
| 632 | assert ((green >= 0) && (green <= 255)); |
| 633 | assert ((blue >= 0) && (blue <= 255)); |
| 634 | |
| 635 | double R = red / 255.0; |
| 636 | double G = green / 255.0; |
| 637 | double B = blue / 255.0; |
| 638 | boolean Rmax = false; |
| 639 | boolean Gmax = false; |
| 640 | boolean Bmax = false; |
| 641 | double min = (R < G ? R : G); |
| 642 | min = (min < B ? min : B); |
| 643 | double max = 0; |
| 644 | if ((R >= G) && (R >= B)) { |
| 645 | max = R; |
| 646 | Rmax = true; |
| 647 | } else if ((G >= R) && (G >= B)) { |
| 648 | max = G; |
| 649 | Gmax = true; |
| 650 | } else if ((B >= G) && (B >= R)) { |
| 651 | max = B; |
| 652 | Bmax = true; |
| 653 | } |
| 654 | |
| 655 | double L = (min + max) / 2.0; |
| 656 | double H = 0.0; |
| 657 | double S = 0.0; |
| 658 | if (min != max) { |
| 659 | if (L < 0.5) { |
| 660 | S = (max - min) / (max + min); |
| 661 | } else { |
| 662 | S = (max - min) / (2.0 - max - min); |
| 663 | } |
| 664 | } |
| 665 | if (Rmax) { |
| 666 | assert (Gmax == false); |
| 667 | assert (Bmax == false); |
| 668 | H = (G - B) / (max - min); |
| 669 | } else if (Gmax) { |
| 670 | assert (Rmax == false); |
| 671 | assert (Bmax == false); |
| 672 | H = 2.0 + (B - R) / (max - min); |
| 673 | } else if (Bmax) { |
| 674 | assert (Rmax == false); |
| 675 | assert (Gmax == false); |
| 676 | H = 4.0 + (R - G) / (max - min); |
| 677 | } |
| 678 | if (H < 0.0) { |
| 679 | H += 6.0; |
| 680 | } |
| 681 | hsl[0] = (int) (H * 60.0); |
| 682 | hsl[1] = (int) (S * 100.0); |
| 683 | hsl[2] = (int) (L * 100.0); |
| 684 | |
| 685 | assert ((hsl[0] >= 0) && (hsl[0] <= 360)); |
| 686 | assert ((hsl[1] >= 0) && (hsl[1] <= 100)); |
| 687 | assert ((hsl[2] >= 0) && (hsl[2] <= 100)); |
| 688 | } |
| 689 | |
| 690 | /** |
| 691 | * Convert a HSL color to RGB. |
| 692 | * |
| 693 | * @param hue hue, between 0 and 359 |
| 694 | * @param sat saturation, between 0 and 100 |
| 695 | * @param lum luminance, between 0 and 100 |
| 696 | * @return the rgb color as 0x00RRGGBB |
| 697 | */ |
| 698 | private int hslToRgb(final int hue, final int sat, final int lum) { |
| 699 | assert ((hue >= 0) && (hue <= 360)); |
| 700 | assert ((sat >= 0) && (sat <= 100)); |
| 701 | assert ((lum >= 0) && (lum <= 100)); |
| 702 | |
| 703 | double S = sat / 100.0; |
| 704 | double L = lum / 100.0; |
| 705 | double C = (1.0 - Math.abs((2.0 * L) - 1.0)) * S; |
| 706 | double Hp = hue / 60.0; |
| 707 | double X = C * (1.0 - Math.abs((Hp % 2) - 1.0)); |
| 708 | double Rp = 0.0; |
| 709 | double Gp = 0.0; |
| 710 | double Bp = 0.0; |
| 711 | if (Hp <= 1.0) { |
| 712 | Rp = C; |
| 713 | Gp = X; |
| 714 | } else if (Hp <= 2.0) { |
| 715 | Rp = X; |
| 716 | Gp = C; |
| 717 | } else if (Hp <= 3.0) { |
| 718 | Gp = C; |
| 719 | Bp = X; |
| 720 | } else if (Hp <= 4.0) { |
| 721 | Gp = X; |
| 722 | Bp = C; |
| 723 | } else if (Hp <= 5.0) { |
| 724 | Rp = X; |
| 725 | Bp = C; |
| 726 | } else if (Hp <= 6.0) { |
| 727 | Rp = C; |
| 728 | Bp = X; |
| 729 | } |
| 730 | double m = L - (C / 2.0); |
| 731 | int red = ((int) ((Rp + m) * 255.0)) << 16; |
| 732 | int green = ((int) ((Gp + m) * 255.0)) << 8; |
| 733 | int blue = (int) ((Bp + m) * 255.0); |
| 734 | |
| 735 | return (red | green | blue); |
| 736 | } |
| 737 | |
| 738 | /** |
| 739 | * Create the sixel palette. |
| 740 | */ |
| 741 | private void makePalette() { |
| 742 | // Generate the sixel palette. Because we have no idea at this |
| 743 | // layer which image(s) will be shown, we have to use a common |
| 744 | // palette with sixelPaletteSize colors for everything, and |
| 745 | // map the BufferedImage colors to their nearest neighbor in RGB |
| 746 | // space. |
| 747 | |
| 748 | if (sixelPaletteSize == 2) { |
| 749 | rgbColors.add(0); |
| 750 | rgbColors.add(0xFFFFFF); |
| 751 | rgbSortedIndex[0] = 0; |
| 752 | rgbSortedIndex[1] = 1; |
| 753 | return; |
| 754 | } |
| 755 | |
| 756 | // We build a palette using the Hue-Saturation-Luminence model, |
| 757 | // with 5+ bits for Hue, 2+ bits for Saturation, and 1+ bit for |
| 758 | // Luminance. We convert these colors to 24-bit RGB, sort them |
| 759 | // ascending, and steal the first index for pure black and the |
| 760 | // last for pure white. The 8-bit final palette favors bright |
| 761 | // colors, somewhere between pastel and classic television |
| 762 | // technicolor. 9- and 10-bit palettes are more uniform. |
| 763 | |
| 764 | // Default at 256 colors. |
| 765 | hueBits = 5; |
| 766 | satBits = 2; |
| 767 | lumBits = 1; |
| 768 | |
| 769 | assert (sixelPaletteSize >= 256); |
| 770 | assert ((sixelPaletteSize == 256) |
| 771 | || (sixelPaletteSize == 512) |
| 772 | || (sixelPaletteSize == 1024) |
| 773 | || (sixelPaletteSize == 2048)); |
| 774 | |
| 775 | switch (sixelPaletteSize) { |
| 776 | case 512: |
| 777 | hueBits = 5; |
| 778 | satBits = 2; |
| 779 | lumBits = 2; |
| 780 | break; |
| 781 | case 1024: |
| 782 | hueBits = 5; |
| 783 | satBits = 2; |
| 784 | lumBits = 3; |
| 785 | break; |
| 786 | case 2048: |
| 787 | hueBits = 5; |
| 788 | satBits = 3; |
| 789 | lumBits = 3; |
| 790 | break; |
| 791 | } |
| 792 | hueStep = (int) (Math.pow(2, hueBits)); |
| 793 | satStep = (int) (100 / Math.pow(2, satBits)); |
| 794 | // 1 bit for luminance: 40 and 70. |
| 795 | int lumBegin = 40; |
| 796 | int lumStep = 30; |
| 797 | switch (lumBits) { |
| 798 | case 2: |
| 799 | // 2 bits: 20, 40, 60, 80 |
| 800 | lumBegin = 20; |
| 801 | lumStep = 20; |
| 802 | break; |
| 803 | case 3: |
| 804 | // 3 bits: 8, 20, 32, 44, 56, 68, 80, 92 |
| 805 | lumBegin = 8; |
| 806 | lumStep = 12; |
| 807 | break; |
| 808 | } |
| 809 | |
| 810 | // System.err.printf("<html><body>\n"); |
| 811 | // Hue is evenly spaced around the wheel. |
| 812 | hslColors = new ArrayList<ArrayList<ArrayList<ColorIdx>>>(); |
| 813 | |
| 814 | final boolean DEBUG = false; |
| 815 | ArrayList<Integer> rawRgbList = new ArrayList<Integer>(); |
| 816 | |
| 817 | for (int hue = 0; hue < (360 - (360 % hueStep)); |
| 818 | hue += (360/hueStep)) { |
| 819 | |
| 820 | ArrayList<ArrayList<ColorIdx>> satList = null; |
| 821 | satList = new ArrayList<ArrayList<ColorIdx>>(); |
| 822 | hslColors.add(satList); |
| 823 | |
| 824 | // Saturation is linearly spaced between pastel and pure. |
| 825 | for (int sat = satStep; sat <= 100; sat += satStep) { |
| 826 | |
| 827 | ArrayList<ColorIdx> lumList = new ArrayList<ColorIdx>(); |
| 828 | satList.add(lumList); |
| 829 | |
| 830 | // Luminance brackets the pure color, but leaning toward |
| 831 | // lighter. |
| 832 | for (int lum = lumBegin; lum < 100; lum += lumStep) { |
| 833 | /* |
| 834 | System.err.printf("<font style = \"color:"); |
| 835 | System.err.printf("hsl(%d, %d%%, %d%%)", |
| 836 | hue, sat, lum); |
| 837 | System.err.printf(";\">=</font>\n"); |
| 838 | */ |
| 839 | int rgbColor = hslToRgb(hue, sat, lum); |
| 840 | rgbColors.add(rgbColor); |
| 841 | ColorIdx colorIdx = new ColorIdx(rgbColor, |
| 842 | rgbColors.size() - 1); |
| 843 | lumList.add(colorIdx); |
| 844 | |
| 845 | rawRgbList.add(rgbColor); |
| 846 | if (DEBUG) { |
| 847 | int red = (rgbColor >>> 16) & 0xFF; |
| 848 | int green = (rgbColor >>> 8) & 0xFF; |
| 849 | int blue = rgbColor & 0xFF; |
| 850 | int [] backToHsl = new int[3]; |
| 851 | rgbToHsl(red, green, blue, backToHsl); |
| 852 | System.err.printf("%d [%d] %d [%d] %d [%d]\n", |
| 853 | hue, backToHsl[0], sat, backToHsl[1], |
| 854 | lum, backToHsl[2]); |
| 855 | } |
| 856 | } |
| 857 | } |
| 858 | } |
| 859 | // System.err.printf("\n</body></html>\n"); |
| 860 | |
| 861 | assert (rgbColors.size() == sixelPaletteSize); |
| 862 | |
| 863 | /* |
| 864 | * We need to sort rgbColors, so that toSixel() can know where |
| 865 | * BLACK and WHITE are in it. But we also need to be able to |
| 866 | * find the sorted values using the old unsorted indexes. So we |
| 867 | * will sort it, put all the indexes into a HashMap, and then |
| 868 | * build rgbSortedIndex[]. |
| 869 | */ |
| 870 | Collections.sort(rgbColors); |
| 871 | HashMap<Integer, Integer> rgbColorIndices = null; |
| 872 | rgbColorIndices = new HashMap<Integer, Integer>(); |
| 873 | for (int i = 0; i < sixelPaletteSize; i++) { |
| 874 | rgbColorIndices.put(rgbColors.get(i), i); |
| 875 | } |
| 876 | for (int i = 0; i < sixelPaletteSize; i++) { |
| 877 | int rawColor = rawRgbList.get(i); |
| 878 | rgbSortedIndex[i] = rgbColorIndices.get(rawColor); |
| 879 | } |
| 880 | if (DEBUG) { |
| 881 | for (int i = 0; i < sixelPaletteSize; i++) { |
| 882 | assert (rawRgbList != null); |
| 883 | int idx = rgbSortedIndex[i]; |
| 884 | int rgbColor = rgbColors.get(idx); |
| 885 | if ((idx != 0) && (idx != sixelPaletteSize - 1)) { |
| 886 | /* |
| 887 | System.err.printf("%d %06x --> %d %06x\n", |
| 888 | i, rawRgbList.get(i), idx, rgbColors.get(idx)); |
| 889 | */ |
| 890 | assert (rgbColor == rawRgbList.get(i)); |
| 891 | } |
| 892 | } |
| 893 | } |
| 894 | |
| 895 | // Set the dimmest color as true black, and the brightest as true |
| 896 | // white. |
| 897 | rgbColors.set(0, 0); |
| 898 | rgbColors.set(sixelPaletteSize - 1, 0xFFFFFF); |
| 899 | |
| 900 | /* |
| 901 | System.err.printf("<html><body>\n"); |
| 902 | for (Integer rgb: rgbColors) { |
| 903 | System.err.printf("<font style = \"color:"); |
| 904 | System.err.printf("#%06x", rgb); |
| 905 | System.err.printf(";\">=</font>\n"); |
| 906 | } |
| 907 | System.err.printf("\n</body></html>\n"); |
| 908 | */ |
| 909 | |
| 910 | } |
| 911 | |
| 912 | /** |
| 913 | * Emit the sixel palette. |
| 914 | * |
| 915 | * @param sb the StringBuilder to append to |
| 916 | * @param used array of booleans set to true for each color actually |
| 917 | * used in this cell, or null to emit the entire palette |
| 918 | * @return the string to emit to an ANSI / ECMA-style terminal |
| 919 | */ |
| 920 | public String emitPalette(final StringBuilder sb, |
| 921 | final boolean [] used) { |
| 922 | |
| 923 | for (int i = 0; i < sixelPaletteSize; i++) { |
| 924 | if (((used != null) && (used[i] == true)) || (used == null)) { |
| 925 | int rgbColor = rgbColors.get(i); |
| 926 | sb.append(String.format("#%d;2;%d;%d;%d", i, |
| 927 | ((rgbColor >>> 16) & 0xFF) * 100 / 255, |
| 928 | ((rgbColor >>> 8) & 0xFF) * 100 / 255, |
| 929 | ( rgbColor & 0xFF) * 100 / 255)); |
| 930 | } |
| 931 | } |
| 932 | return sb.toString(); |
| 933 | } |
| 934 | } |
| 935 | |
| 936 | /** |
| 937 | * ImageCache is a least-recently-used cache that hangs on to the |
| 938 | * post-rendered sixel or iTerm2 string for a particular set of cells. |
| 939 | */ |
| 940 | private class ImageCache { |
| 941 | |
| 942 | /** |
| 943 | * Maximum size of the cache. |
| 944 | */ |
| 945 | private int maxSize = 100; |
| 946 | |
| 947 | /** |
| 948 | * The entries stored in the cache. |
| 949 | */ |
| 950 | private HashMap<String, CacheEntry> cache = null; |
| 951 | |
| 952 | /** |
| 953 | * CacheEntry is one entry in the cache. |
| 954 | */ |
| 955 | private class CacheEntry { |
| 956 | /** |
| 957 | * The cache key. |
| 958 | */ |
| 959 | public String key; |
| 960 | |
| 961 | /** |
| 962 | * The cache data. |
| 963 | */ |
| 964 | public String data; |
| 965 | |
| 966 | /** |
| 967 | * The last time this entry was used. |
| 968 | */ |
| 969 | public long millis = 0; |
| 970 | |
| 971 | /** |
| 972 | * Public constructor. |
| 973 | * |
| 974 | * @param key the cache entry key |
| 975 | * @param data the cache entry data |
| 976 | */ |
| 977 | public CacheEntry(final String key, final String data) { |
| 978 | this.key = key; |
| 979 | this.data = data; |
| 980 | this.millis = System.currentTimeMillis(); |
| 981 | } |
| 982 | } |
| 983 | |
| 984 | /** |
| 985 | * Public constructor. |
| 986 | * |
| 987 | * @param maxSize the maximum size of the cache |
| 988 | */ |
| 989 | public ImageCache(final int maxSize) { |
| 990 | this.maxSize = maxSize; |
| 991 | cache = new HashMap<String, CacheEntry>(); |
| 992 | } |
| 993 | |
| 994 | /** |
| 995 | * Make a unique key for a list of cells. |
| 996 | * |
| 997 | * @param cells the cells |
| 998 | * @return the key |
| 999 | */ |
| 1000 | private String makeKey(final ArrayList<Cell> cells) { |
| 1001 | StringBuilder sb = new StringBuilder(); |
| 1002 | for (Cell cell: cells) { |
| 1003 | sb.append(cell.hashCode()); |
| 1004 | } |
| 1005 | return sb.toString(); |
| 1006 | } |
| 1007 | |
| 1008 | /** |
| 1009 | * Get an entry from the cache. |
| 1010 | * |
| 1011 | * @param cells the list of cells that are the cache key |
| 1012 | * @return the sixel string representing these cells, or null if this |
| 1013 | * list of cells is not in the cache |
| 1014 | */ |
| 1015 | public String get(final ArrayList<Cell> cells) { |
| 1016 | CacheEntry entry = cache.get(makeKey(cells)); |
| 1017 | if (entry == null) { |
| 1018 | return null; |
| 1019 | } |
| 1020 | entry.millis = System.currentTimeMillis(); |
| 1021 | return entry.data; |
| 1022 | } |
| 1023 | |
| 1024 | /** |
| 1025 | * Put an entry into the cache. |
| 1026 | * |
| 1027 | * @param cells the list of cells that are the cache key |
| 1028 | * @param data the sixel string representing these cells |
| 1029 | */ |
| 1030 | public void put(final ArrayList<Cell> cells, final String data) { |
| 1031 | String key = makeKey(cells); |
| 1032 | |
| 1033 | // System.err.println("put() " + key + " size " + cache.size()); |
| 1034 | |
| 1035 | assert (!cache.containsKey(key)); |
| 1036 | |
| 1037 | assert (cache.size() <= maxSize); |
| 1038 | if (cache.size() == maxSize) { |
| 1039 | // Cache is at limit, evict oldest entry. |
| 1040 | long oldestTime = Long.MAX_VALUE; |
| 1041 | String keyToRemove = null; |
| 1042 | for (CacheEntry entry: cache.values()) { |
| 1043 | if ((entry.millis < oldestTime) || (keyToRemove == null)) { |
| 1044 | keyToRemove = entry.key; |
| 1045 | oldestTime = entry.millis; |
| 1046 | } |
| 1047 | } |
| 1048 | /* |
| 1049 | System.err.println("put() remove key = " + keyToRemove + |
| 1050 | " size " + cache.size()); |
| 1051 | */ |
| 1052 | assert (keyToRemove != null); |
| 1053 | cache.remove(keyToRemove); |
| 1054 | /* |
| 1055 | System.err.println("put() removed, size " + cache.size()); |
| 1056 | */ |
| 1057 | } |
| 1058 | assert (cache.size() <= maxSize); |
| 1059 | CacheEntry entry = new CacheEntry(key, data); |
| 1060 | assert (key.equals(entry.key)); |
| 1061 | cache.put(key, entry); |
| 1062 | /* |
| 1063 | System.err.println("put() added key " + key + " " + |
| 1064 | " size " + cache.size()); |
| 1065 | */ |
| 1066 | } |
| 1067 | |
| 1068 | } |
| 1069 | |
| 1070 | // ------------------------------------------------------------------------ |
| 1071 | // Constructors ----------------------------------------------------------- |
| 1072 | // ------------------------------------------------------------------------ |
| 1073 | |
| 1074 | /** |
| 1075 | * Constructor sets up state for getEvent(). If either windowWidth or |
| 1076 | * windowHeight are less than 1, the terminal is not resized. |
| 1077 | * |
| 1078 | * @param listener the object this backend needs to wake up when new |
| 1079 | * input comes in |
| 1080 | * @param input an InputStream connected to the remote user, or null for |
| 1081 | * System.in. If System.in is used, then on non-Windows systems it will |
| 1082 | * be put in raw mode; closeTerminal() will (blindly!) put System.in in |
| 1083 | * cooked mode. input is always converted to a Reader with UTF-8 |
| 1084 | * encoding. |
| 1085 | * @param output an OutputStream connected to the remote user, or null |
| 1086 | * for System.out. output is always converted to a Writer with UTF-8 |
| 1087 | * encoding. |
| 1088 | * @param windowWidth the number of text columns to start with |
| 1089 | * @param windowHeight the number of text rows to start with |
| 1090 | * @throws UnsupportedEncodingException if an exception is thrown when |
| 1091 | * creating the InputStreamReader |
| 1092 | */ |
| 1093 | public ECMA48Terminal(final Object listener, final InputStream input, |
| 1094 | final OutputStream output, final int windowWidth, |
| 1095 | final int windowHeight) throws UnsupportedEncodingException { |
| 1096 | |
| 1097 | this(listener, input, output); |
| 1098 | |
| 1099 | // Send dtterm/xterm sequences, which will probably not work because |
| 1100 | // allowWindowOps is defaulted to false. |
| 1101 | if ((windowWidth > 0) && (windowHeight > 0)) { |
| 1102 | String resizeString = String.format("\033[8;%d;%dt", windowHeight, |
| 1103 | windowWidth); |
| 1104 | this.output.write(resizeString); |
| 1105 | this.output.flush(); |
| 1106 | } |
| 1107 | } |
| 1108 | |
| 1109 | /** |
| 1110 | * Constructor sets up state for getEvent(). |
| 1111 | * |
| 1112 | * @param listener the object this backend needs to wake up when new |
| 1113 | * input comes in |
| 1114 | * @param input an InputStream connected to the remote user, or null for |
| 1115 | * System.in. If System.in is used, then on non-Windows systems it will |
| 1116 | * be put in raw mode; closeTerminal() will (blindly!) put System.in in |
| 1117 | * cooked mode. input is always converted to a Reader with UTF-8 |
| 1118 | * encoding. |
| 1119 | * @param output an OutputStream connected to the remote user, or null |
| 1120 | * for System.out. output is always converted to a Writer with UTF-8 |
| 1121 | * encoding. |
| 1122 | * @throws UnsupportedEncodingException if an exception is thrown when |
| 1123 | * creating the InputStreamReader |
| 1124 | */ |
| 1125 | public ECMA48Terminal(final Object listener, final InputStream input, |
| 1126 | final OutputStream output) throws UnsupportedEncodingException { |
| 1127 | |
| 1128 | resetParser(); |
| 1129 | mouse1 = false; |
| 1130 | mouse2 = false; |
| 1131 | mouse3 = false; |
| 1132 | stopReaderThread = false; |
| 1133 | this.listener = listener; |
| 1134 | |
| 1135 | if (input == null) { |
| 1136 | // inputStream = System.in; |
| 1137 | inputStream = new FileInputStream(FileDescriptor.in); |
| 1138 | sttyRaw(); |
| 1139 | setRawMode = true; |
| 1140 | } else { |
| 1141 | inputStream = input; |
| 1142 | } |
| 1143 | this.input = new InputStreamReader(inputStream, "UTF-8"); |
| 1144 | |
| 1145 | if (input instanceof SessionInfo) { |
| 1146 | // This is a TelnetInputStream that exposes window size and |
| 1147 | // environment variables from the telnet layer. |
| 1148 | sessionInfo = (SessionInfo) input; |
| 1149 | } |
| 1150 | if (sessionInfo == null) { |
| 1151 | if (input == null) { |
| 1152 | // Reading right off the tty |
| 1153 | sessionInfo = new TTYSessionInfo(); |
| 1154 | } else { |
| 1155 | sessionInfo = new TSessionInfo(); |
| 1156 | } |
| 1157 | } |
| 1158 | |
| 1159 | if (output == null) { |
| 1160 | this.output = new PrintWriter(new OutputStreamWriter(System.out, |
| 1161 | "UTF-8")); |
| 1162 | } else { |
| 1163 | this.output = new PrintWriter(new OutputStreamWriter(output, |
| 1164 | "UTF-8")); |
| 1165 | } |
| 1166 | |
| 1167 | // Request Device Attributes |
| 1168 | this.output.printf("\033[c"); |
| 1169 | |
| 1170 | // Request xterm report window/cell dimensions in pixels |
| 1171 | this.output.printf("%s", xtermReportPixelDimensions()); |
| 1172 | |
| 1173 | // Enable mouse reporting and metaSendsEscape |
| 1174 | this.output.printf("%s%s", mouse(true), xtermMetaSendsEscape(true)); |
| 1175 | this.output.flush(); |
| 1176 | |
| 1177 | // Request xterm use the sixel settings we want |
| 1178 | this.output.printf("%s", xtermSetSixelSettings()); |
| 1179 | |
| 1180 | // Query the screen size |
| 1181 | sessionInfo.queryWindowSize(); |
| 1182 | setDimensions(sessionInfo.getWindowWidth(), |
| 1183 | sessionInfo.getWindowHeight()); |
| 1184 | |
| 1185 | // Hang onto the window size |
| 1186 | windowResize = new TResizeEvent(TResizeEvent.Type.SCREEN, |
| 1187 | sessionInfo.getWindowWidth(), sessionInfo.getWindowHeight()); |
| 1188 | |
| 1189 | reloadOptions(); |
| 1190 | |
| 1191 | // Spin up the input reader |
| 1192 | eventQueue = new ArrayList<TInputEvent>(); |
| 1193 | readerThread = new Thread(this); |
| 1194 | readerThread.start(); |
| 1195 | |
| 1196 | // Clear the screen |
| 1197 | this.output.write(clearAll()); |
| 1198 | this.output.flush(); |
| 1199 | } |
| 1200 | |
| 1201 | /** |
| 1202 | * Constructor sets up state for getEvent(). |
| 1203 | * |
| 1204 | * @param listener the object this backend needs to wake up when new |
| 1205 | * input comes in |
| 1206 | * @param input the InputStream underlying 'reader'. Its available() |
| 1207 | * method is used to determine if reader.read() will block or not. |
| 1208 | * @param reader a Reader connected to the remote user. |
| 1209 | * @param writer a PrintWriter connected to the remote user. |
| 1210 | * @param setRawMode if true, set System.in into raw mode with stty. |
| 1211 | * This should in general not be used. It is here solely for Demo3, |
| 1212 | * which uses System.in. |
| 1213 | * @throws IllegalArgumentException if input, reader, or writer are null. |
| 1214 | */ |
| 1215 | public ECMA48Terminal(final Object listener, final InputStream input, |
| 1216 | final Reader reader, final PrintWriter writer, |
| 1217 | final boolean setRawMode) { |
| 1218 | |
| 1219 | if (input == null) { |
| 1220 | throw new IllegalArgumentException("InputStream must be specified"); |
| 1221 | } |
| 1222 | if (reader == null) { |
| 1223 | throw new IllegalArgumentException("Reader must be specified"); |
| 1224 | } |
| 1225 | if (writer == null) { |
| 1226 | throw new IllegalArgumentException("Writer must be specified"); |
| 1227 | } |
| 1228 | resetParser(); |
| 1229 | mouse1 = false; |
| 1230 | mouse2 = false; |
| 1231 | mouse3 = false; |
| 1232 | stopReaderThread = false; |
| 1233 | this.listener = listener; |
| 1234 | |
| 1235 | inputStream = input; |
| 1236 | this.input = reader; |
| 1237 | |
| 1238 | if (setRawMode == true) { |
| 1239 | sttyRaw(); |
| 1240 | } |
| 1241 | this.setRawMode = setRawMode; |
| 1242 | |
| 1243 | if (input instanceof SessionInfo) { |
| 1244 | // This is a TelnetInputStream that exposes window size and |
| 1245 | // environment variables from the telnet layer. |
| 1246 | sessionInfo = (SessionInfo) input; |
| 1247 | } |
| 1248 | if (sessionInfo == null) { |
| 1249 | if (setRawMode == true) { |
| 1250 | // Reading right off the tty |
| 1251 | sessionInfo = new TTYSessionInfo(); |
| 1252 | } else { |
| 1253 | sessionInfo = new TSessionInfo(); |
| 1254 | } |
| 1255 | } |
| 1256 | |
| 1257 | this.output = writer; |
| 1258 | |
| 1259 | // Request Device Attributes |
| 1260 | this.output.printf("\033[c"); |
| 1261 | |
| 1262 | // Request xterm report window/cell dimensions in pixels |
| 1263 | this.output.printf("%s", xtermReportPixelDimensions()); |
| 1264 | |
| 1265 | // Enable mouse reporting and metaSendsEscape |
| 1266 | this.output.printf("%s%s", mouse(true), xtermMetaSendsEscape(true)); |
| 1267 | this.output.flush(); |
| 1268 | |
| 1269 | // Request xterm use the sixel settings we want |
| 1270 | this.output.printf("%s", xtermSetSixelSettings()); |
| 1271 | |
| 1272 | // Query the screen size |
| 1273 | sessionInfo.queryWindowSize(); |
| 1274 | setDimensions(sessionInfo.getWindowWidth(), |
| 1275 | sessionInfo.getWindowHeight()); |
| 1276 | |
| 1277 | // Hang onto the window size |
| 1278 | windowResize = new TResizeEvent(TResizeEvent.Type.SCREEN, |
| 1279 | sessionInfo.getWindowWidth(), sessionInfo.getWindowHeight()); |
| 1280 | |
| 1281 | reloadOptions(); |
| 1282 | |
| 1283 | // Spin up the input reader |
| 1284 | eventQueue = new ArrayList<TInputEvent>(); |
| 1285 | readerThread = new Thread(this); |
| 1286 | readerThread.start(); |
| 1287 | |
| 1288 | // Clear the screen |
| 1289 | this.output.write(clearAll()); |
| 1290 | this.output.flush(); |
| 1291 | } |
| 1292 | |
| 1293 | /** |
| 1294 | * Constructor sets up state for getEvent(). |
| 1295 | * |
| 1296 | * @param listener the object this backend needs to wake up when new |
| 1297 | * input comes in |
| 1298 | * @param input the InputStream underlying 'reader'. Its available() |
| 1299 | * method is used to determine if reader.read() will block or not. |
| 1300 | * @param reader a Reader connected to the remote user. |
| 1301 | * @param writer a PrintWriter connected to the remote user. |
| 1302 | * @throws IllegalArgumentException if input, reader, or writer are null. |
| 1303 | */ |
| 1304 | public ECMA48Terminal(final Object listener, final InputStream input, |
| 1305 | final Reader reader, final PrintWriter writer) { |
| 1306 | |
| 1307 | this(listener, input, reader, writer, false); |
| 1308 | } |
| 1309 | |
| 1310 | // ------------------------------------------------------------------------ |
| 1311 | // LogicalScreen ---------------------------------------------------------- |
| 1312 | // ------------------------------------------------------------------------ |
| 1313 | |
| 1314 | /** |
| 1315 | * Set the window title. |
| 1316 | * |
| 1317 | * @param title the new title |
| 1318 | */ |
| 1319 | @Override |
| 1320 | public void setTitle(final String title) { |
| 1321 | output.write(getSetTitleString(title)); |
| 1322 | flush(); |
| 1323 | } |
| 1324 | |
| 1325 | /** |
| 1326 | * Push the logical screen to the physical device. |
| 1327 | */ |
| 1328 | @Override |
| 1329 | public void flushPhysical() { |
| 1330 | StringBuilder sb = new StringBuilder(); |
| 1331 | if ((cursorVisible) |
| 1332 | && (cursorY >= 0) |
| 1333 | && (cursorX >= 0) |
| 1334 | && (cursorY <= height - 1) |
| 1335 | && (cursorX <= width - 1) |
| 1336 | ) { |
| 1337 | flushString(sb); |
| 1338 | sb.append(cursor(true)); |
| 1339 | sb.append(gotoXY(cursorX, cursorY)); |
| 1340 | } else { |
| 1341 | sb.append(cursor(false)); |
| 1342 | flushString(sb); |
| 1343 | } |
| 1344 | output.write(sb.toString()); |
| 1345 | flush(); |
| 1346 | } |
| 1347 | |
| 1348 | /** |
| 1349 | * Resize the physical screen to match the logical screen dimensions. |
| 1350 | */ |
| 1351 | @Override |
| 1352 | public void resizeToScreen() { |
| 1353 | // Send dtterm/xterm sequences, which will probably not work because |
| 1354 | // allowWindowOps is defaulted to false. |
| 1355 | String resizeString = String.format("\033[8;%d;%dt", getHeight(), |
| 1356 | getWidth()); |
| 1357 | this.output.write(resizeString); |
| 1358 | this.output.flush(); |
| 1359 | } |
| 1360 | |
| 1361 | // ------------------------------------------------------------------------ |
| 1362 | // TerminalReader --------------------------------------------------------- |
| 1363 | // ------------------------------------------------------------------------ |
| 1364 | |
| 1365 | /** |
| 1366 | * Check if there are events in the queue. |
| 1367 | * |
| 1368 | * @return if true, getEvents() has something to return to the backend |
| 1369 | */ |
| 1370 | public boolean hasEvents() { |
| 1371 | synchronized (eventQueue) { |
| 1372 | return (eventQueue.size() > 0); |
| 1373 | } |
| 1374 | } |
| 1375 | |
| 1376 | /** |
| 1377 | * Return any events in the IO queue. |
| 1378 | * |
| 1379 | * @param queue list to append new events to |
| 1380 | */ |
| 1381 | public void getEvents(final List<TInputEvent> queue) { |
| 1382 | synchronized (eventQueue) { |
| 1383 | if (eventQueue.size() > 0) { |
| 1384 | synchronized (queue) { |
| 1385 | queue.addAll(eventQueue); |
| 1386 | } |
| 1387 | eventQueue.clear(); |
| 1388 | } |
| 1389 | } |
| 1390 | } |
| 1391 | |
| 1392 | /** |
| 1393 | * Restore terminal to normal state. |
| 1394 | */ |
| 1395 | public void closeTerminal() { |
| 1396 | |
| 1397 | // System.err.println("=== closeTerminal() ==="); System.err.flush(); |
| 1398 | |
| 1399 | // Tell the reader thread to stop looking at input |
| 1400 | stopReaderThread = true; |
| 1401 | try { |
| 1402 | readerThread.join(); |
| 1403 | } catch (InterruptedException e) { |
| 1404 | if (debugToStderr) { |
| 1405 | e.printStackTrace(); |
| 1406 | } |
| 1407 | } |
| 1408 | |
| 1409 | // Disable mouse reporting and show cursor. Defensive null check |
| 1410 | // here in case closeTerminal() is called twice. |
| 1411 | if (output != null) { |
| 1412 | output.printf("%s%s%s%s", mouse(false), cursor(true), |
| 1413 | defaultColor(), xtermResetSixelSettings()); |
| 1414 | output.flush(); |
| 1415 | } |
| 1416 | |
| 1417 | if (setRawMode) { |
| 1418 | sttyCooked(); |
| 1419 | setRawMode = false; |
| 1420 | // We don't close System.in/out |
| 1421 | } else { |
| 1422 | // Shut down the streams, this should wake up the reader thread |
| 1423 | // and make it exit. |
| 1424 | if (input != null) { |
| 1425 | try { |
| 1426 | input.close(); |
| 1427 | } catch (IOException e) { |
| 1428 | // SQUASH |
| 1429 | } |
| 1430 | input = null; |
| 1431 | } |
| 1432 | if (output != null) { |
| 1433 | output.close(); |
| 1434 | output = null; |
| 1435 | } |
| 1436 | } |
| 1437 | } |
| 1438 | |
| 1439 | /** |
| 1440 | * Set listener to a different Object. |
| 1441 | * |
| 1442 | * @param listener the new listening object that run() wakes up on new |
| 1443 | * input |
| 1444 | */ |
| 1445 | public void setListener(final Object listener) { |
| 1446 | this.listener = listener; |
| 1447 | } |
| 1448 | |
| 1449 | /** |
| 1450 | * Reload options from System properties. |
| 1451 | */ |
| 1452 | public void reloadOptions() { |
| 1453 | // Permit RGB colors only if externally requested. |
| 1454 | if (System.getProperty("jexer.ECMA48.rgbColor", |
| 1455 | "false").equals("true") |
| 1456 | ) { |
| 1457 | doRgbColor = true; |
| 1458 | } else { |
| 1459 | doRgbColor = false; |
| 1460 | } |
| 1461 | |
| 1462 | // Default to using images for full-width characters. |
| 1463 | if (System.getProperty("jexer.ECMA48.wideCharImages", |
| 1464 | "true").equals("true")) { |
| 1465 | wideCharImages = true; |
| 1466 | } else { |
| 1467 | wideCharImages = false; |
| 1468 | } |
| 1469 | |
| 1470 | // Pull the system properties for sixel output. |
| 1471 | if (System.getProperty("jexer.ECMA48.sixel", "true").equals("true")) { |
| 1472 | sixel = true; |
| 1473 | } else { |
| 1474 | sixel = false; |
| 1475 | } |
| 1476 | |
| 1477 | // Palette size |
| 1478 | int paletteSize = 1024; |
| 1479 | try { |
| 1480 | paletteSize = Integer.parseInt(System.getProperty( |
| 1481 | "jexer.ECMA48.sixelPaletteSize", "1024")); |
| 1482 | switch (paletteSize) { |
| 1483 | case 2: |
| 1484 | case 256: |
| 1485 | case 512: |
| 1486 | case 1024: |
| 1487 | case 2048: |
| 1488 | sixelPaletteSize = paletteSize; |
| 1489 | break; |
| 1490 | default: |
| 1491 | // Ignore value |
| 1492 | break; |
| 1493 | } |
| 1494 | } catch (NumberFormatException e) { |
| 1495 | // SQUASH |
| 1496 | } |
| 1497 | |
| 1498 | // Shared palette |
| 1499 | if (System.getProperty("jexer.ECMA48.sixelSharedPalette", |
| 1500 | "true").equals("false")) { |
| 1501 | sixelSharedPalette = false; |
| 1502 | } else { |
| 1503 | sixelSharedPalette = true; |
| 1504 | } |
| 1505 | |
| 1506 | // Default to not supporting iTerm2 images. |
| 1507 | if (System.getProperty("jexer.ECMA48.iTerm2Images", |
| 1508 | "false").equals("true")) { |
| 1509 | iterm2Images = true; |
| 1510 | } else { |
| 1511 | iterm2Images = false; |
| 1512 | } |
| 1513 | |
| 1514 | // Default to using JPG Jexer images if terminal supports it. |
| 1515 | String jexerImageStr = System.getProperty("jexer.ECMA48.jexerImages", |
| 1516 | "jpg").toLowerCase(); |
| 1517 | if (jexerImageStr.equals("false")) { |
| 1518 | jexerImageOption = JexerImageOption.DISABLED; |
| 1519 | } else if (jexerImageStr.equals("jpg")) { |
| 1520 | jexerImageOption = JexerImageOption.JPG; |
| 1521 | } else if (jexerImageStr.equals("png")) { |
| 1522 | jexerImageOption = JexerImageOption.PNG; |
| 1523 | } else if (jexerImageStr.equals("rgb")) { |
| 1524 | jexerImageOption = JexerImageOption.RGB; |
| 1525 | } |
| 1526 | |
| 1527 | // Set custom colors |
| 1528 | setCustomSystemColors(); |
| 1529 | } |
| 1530 | |
| 1531 | // ------------------------------------------------------------------------ |
| 1532 | // Runnable --------------------------------------------------------------- |
| 1533 | // ------------------------------------------------------------------------ |
| 1534 | |
| 1535 | /** |
| 1536 | * Read function runs on a separate thread. |
| 1537 | */ |
| 1538 | public void run() { |
| 1539 | boolean done = false; |
| 1540 | // available() will often return > 1, so we need to read in chunks to |
| 1541 | // stay caught up. |
| 1542 | char [] readBuffer = new char[128]; |
| 1543 | List<TInputEvent> events = new ArrayList<TInputEvent>(); |
| 1544 | |
| 1545 | while (!done && !stopReaderThread) { |
| 1546 | try { |
| 1547 | // We assume that if inputStream has bytes available, then |
| 1548 | // input won't block on read(). |
| 1549 | int n = inputStream.available(); |
| 1550 | |
| 1551 | /* |
| 1552 | System.err.printf("inputStream.available(): %d\n", n); |
| 1553 | System.err.flush(); |
| 1554 | */ |
| 1555 | |
| 1556 | if (n > 0) { |
| 1557 | if (readBuffer.length < n) { |
| 1558 | // The buffer wasn't big enough, make it huger |
| 1559 | readBuffer = new char[readBuffer.length * 2]; |
| 1560 | } |
| 1561 | |
| 1562 | // System.err.printf("BEFORE read()\n"); System.err.flush(); |
| 1563 | |
| 1564 | int rc = input.read(readBuffer, 0, readBuffer.length); |
| 1565 | |
| 1566 | /* |
| 1567 | System.err.printf("AFTER read() %d\n", rc); |
| 1568 | System.err.flush(); |
| 1569 | */ |
| 1570 | |
| 1571 | if (rc == -1) { |
| 1572 | // This is EOF |
| 1573 | done = true; |
| 1574 | } else { |
| 1575 | for (int i = 0; i < rc; i++) { |
| 1576 | int ch = readBuffer[i]; |
| 1577 | processChar(events, (char)ch); |
| 1578 | } |
| 1579 | getIdleEvents(events); |
| 1580 | if (events.size() > 0) { |
| 1581 | // Add to the queue for the backend thread to |
| 1582 | // be able to obtain. |
| 1583 | synchronized (eventQueue) { |
| 1584 | eventQueue.addAll(events); |
| 1585 | } |
| 1586 | if (listener != null) { |
| 1587 | synchronized (listener) { |
| 1588 | listener.notifyAll(); |
| 1589 | } |
| 1590 | } |
| 1591 | events.clear(); |
| 1592 | } |
| 1593 | } |
| 1594 | } else { |
| 1595 | getIdleEvents(events); |
| 1596 | if (events.size() > 0) { |
| 1597 | synchronized (eventQueue) { |
| 1598 | eventQueue.addAll(events); |
| 1599 | } |
| 1600 | if (listener != null) { |
| 1601 | synchronized (listener) { |
| 1602 | listener.notifyAll(); |
| 1603 | } |
| 1604 | } |
| 1605 | events.clear(); |
| 1606 | } |
| 1607 | |
| 1608 | if (output.checkError()) { |
| 1609 | // This is EOF. |
| 1610 | done = true; |
| 1611 | } |
| 1612 | |
| 1613 | // Wait 20 millis for more data |
| 1614 | Thread.sleep(20); |
| 1615 | } |
| 1616 | // System.err.println("end while loop"); System.err.flush(); |
| 1617 | } catch (InterruptedException e) { |
| 1618 | // SQUASH |
| 1619 | } catch (IOException e) { |
| 1620 | e.printStackTrace(); |
| 1621 | done = true; |
| 1622 | } |
| 1623 | } // while ((done == false) && (stopReaderThread == false)) |
| 1624 | |
| 1625 | // Pass an event up to TApplication to tell it this Backend is done. |
| 1626 | synchronized (eventQueue) { |
| 1627 | eventQueue.add(new TCommandEvent(cmBackendDisconnect)); |
| 1628 | } |
| 1629 | if (listener != null) { |
| 1630 | synchronized (listener) { |
| 1631 | listener.notifyAll(); |
| 1632 | } |
| 1633 | } |
| 1634 | |
| 1635 | // System.err.println("*** run() exiting..."); System.err.flush(); |
| 1636 | } |
| 1637 | |
| 1638 | // ------------------------------------------------------------------------ |
| 1639 | // ECMA48Terminal --------------------------------------------------------- |
| 1640 | // ------------------------------------------------------------------------ |
| 1641 | |
| 1642 | /** |
| 1643 | * Get the width of a character cell in pixels. |
| 1644 | * |
| 1645 | * @return the width in pixels of a character cell |
| 1646 | */ |
| 1647 | public int getTextWidth() { |
| 1648 | return (widthPixels / sessionInfo.getWindowWidth()); |
| 1649 | } |
| 1650 | |
| 1651 | /** |
| 1652 | * Get the height of a character cell in pixels. |
| 1653 | * |
| 1654 | * @return the height in pixels of a character cell |
| 1655 | */ |
| 1656 | public int getTextHeight() { |
| 1657 | return (heightPixels / sessionInfo.getWindowHeight()); |
| 1658 | } |
| 1659 | |
| 1660 | /** |
| 1661 | * Getter for sessionInfo. |
| 1662 | * |
| 1663 | * @return the SessionInfo |
| 1664 | */ |
| 1665 | public SessionInfo getSessionInfo() { |
| 1666 | return sessionInfo; |
| 1667 | } |
| 1668 | |
| 1669 | /** |
| 1670 | * Get the output writer. |
| 1671 | * |
| 1672 | * @return the Writer |
| 1673 | */ |
| 1674 | public PrintWriter getOutput() { |
| 1675 | return output; |
| 1676 | } |
| 1677 | |
| 1678 | /** |
| 1679 | * Call 'stty' to set cooked mode. |
| 1680 | * |
| 1681 | * <p>Actually executes '/bin/sh -c stty sane cooked < /dev/tty' |
| 1682 | */ |
| 1683 | private void sttyCooked() { |
| 1684 | doStty(false); |
| 1685 | } |
| 1686 | |
| 1687 | /** |
| 1688 | * Call 'stty' to set raw mode. |
| 1689 | * |
| 1690 | * <p>Actually executes '/bin/sh -c stty -ignbrk -brkint -parmrk -istrip |
| 1691 | * -inlcr -igncr -icrnl -ixon -opost -echo -echonl -icanon -isig -iexten |
| 1692 | * -parenb cs8 min 1 < /dev/tty' |
| 1693 | */ |
| 1694 | private void sttyRaw() { |
| 1695 | doStty(true); |
| 1696 | } |
| 1697 | |
| 1698 | /** |
| 1699 | * Call 'stty' to set raw or cooked mode. |
| 1700 | * |
| 1701 | * @param mode if true, set raw mode, otherwise set cooked mode |
| 1702 | */ |
| 1703 | private void doStty(final boolean mode) { |
| 1704 | String [] cmdRaw = { |
| 1705 | "/bin/sh", "-c", "stty -ignbrk -brkint -parmrk -istrip -inlcr -igncr -icrnl -ixon -opost -echo -echonl -icanon -isig -iexten -parenb cs8 min 1 < /dev/tty" |
| 1706 | }; |
| 1707 | String [] cmdCooked = { |
| 1708 | "/bin/sh", "-c", "stty sane cooked < /dev/tty" |
| 1709 | }; |
| 1710 | try { |
| 1711 | Process process; |
| 1712 | if (mode) { |
| 1713 | process = Runtime.getRuntime().exec(cmdRaw); |
| 1714 | } else { |
| 1715 | process = Runtime.getRuntime().exec(cmdCooked); |
| 1716 | } |
| 1717 | BufferedReader in = new BufferedReader(new InputStreamReader(process.getInputStream(), "UTF-8")); |
| 1718 | String line = in.readLine(); |
| 1719 | if ((line != null) && (line.length() > 0)) { |
| 1720 | System.err.println("WEIRD?! Normal output from stty: " + line); |
| 1721 | } |
| 1722 | while (true) { |
| 1723 | BufferedReader err = new BufferedReader(new InputStreamReader(process.getErrorStream(), "UTF-8")); |
| 1724 | line = err.readLine(); |
| 1725 | if ((line != null) && (line.length() > 0)) { |
| 1726 | System.err.println("Error output from stty: " + line); |
| 1727 | } |
| 1728 | try { |
| 1729 | process.waitFor(); |
| 1730 | break; |
| 1731 | } catch (InterruptedException e) { |
| 1732 | if (debugToStderr) { |
| 1733 | e.printStackTrace(); |
| 1734 | } |
| 1735 | } |
| 1736 | } |
| 1737 | int rc = process.exitValue(); |
| 1738 | if (rc != 0) { |
| 1739 | System.err.println("stty returned error code: " + rc); |
| 1740 | } |
| 1741 | } catch (IOException e) { |
| 1742 | e.printStackTrace(); |
| 1743 | } |
| 1744 | } |
| 1745 | |
| 1746 | /** |
| 1747 | * Flush output. |
| 1748 | */ |
| 1749 | public void flush() { |
| 1750 | output.flush(); |
| 1751 | } |
| 1752 | |
| 1753 | /** |
| 1754 | * Perform a somewhat-optimal rendering of a line. |
| 1755 | * |
| 1756 | * @param y row coordinate. 0 is the top-most row. |
| 1757 | * @param sb StringBuilder to write escape sequences to |
| 1758 | * @param lastAttr cell attributes from the last call to flushLine |
| 1759 | */ |
| 1760 | private void flushLine(final int y, final StringBuilder sb, |
| 1761 | CellAttributes lastAttr) { |
| 1762 | |
| 1763 | int lastX = -1; |
| 1764 | int textEnd = 0; |
| 1765 | for (int x = 0; x < width; x++) { |
| 1766 | Cell lCell = logical[x][y]; |
| 1767 | if (!lCell.isBlank()) { |
| 1768 | textEnd = x; |
| 1769 | } |
| 1770 | } |
| 1771 | // Push textEnd to first column beyond the text area |
| 1772 | textEnd++; |
| 1773 | |
| 1774 | // DEBUG |
| 1775 | // reallyCleared = true; |
| 1776 | |
| 1777 | boolean hasImage = false; |
| 1778 | |
| 1779 | for (int x = 0; x < width; x++) { |
| 1780 | Cell lCell = logical[x][y]; |
| 1781 | Cell pCell = physical[x][y]; |
| 1782 | |
| 1783 | if (!lCell.equals(pCell) || reallyCleared) { |
| 1784 | |
| 1785 | if (debugToStderr) { |
| 1786 | System.err.printf("\n--\n"); |
| 1787 | System.err.printf(" Y: %d X: %d\n", y, x); |
| 1788 | System.err.printf(" lCell: %s\n", lCell); |
| 1789 | System.err.printf(" pCell: %s\n", pCell); |
| 1790 | System.err.printf(" ==== \n"); |
| 1791 | } |
| 1792 | |
| 1793 | if (lastAttr == null) { |
| 1794 | lastAttr = new CellAttributes(); |
| 1795 | sb.append(normal()); |
| 1796 | } |
| 1797 | |
| 1798 | // Place the cell |
| 1799 | if ((lastX != (x - 1)) || (lastX == -1)) { |
| 1800 | // Advancing at least one cell, or the first gotoXY |
| 1801 | sb.append(gotoXY(x, y)); |
| 1802 | } |
| 1803 | |
| 1804 | assert (lastAttr != null); |
| 1805 | |
| 1806 | if ((x == textEnd) && (textEnd < width - 1)) { |
| 1807 | assert (lCell.isBlank()); |
| 1808 | |
| 1809 | for (int i = x; i < width; i++) { |
| 1810 | assert (logical[i][y].isBlank()); |
| 1811 | // Physical is always updated |
| 1812 | physical[i][y].reset(); |
| 1813 | } |
| 1814 | |
| 1815 | // Clear remaining line |
| 1816 | sb.append(clearRemainingLine()); |
| 1817 | lastAttr.reset(); |
| 1818 | return; |
| 1819 | } |
| 1820 | |
| 1821 | // Image cell: bypass the rest of the loop, it is not |
| 1822 | // rendered here. |
| 1823 | if ((wideCharImages && lCell.isImage()) |
| 1824 | || (!wideCharImages |
| 1825 | && lCell.isImage() |
| 1826 | && (lCell.getWidth() == Cell.Width.SINGLE)) |
| 1827 | ) { |
| 1828 | hasImage = true; |
| 1829 | |
| 1830 | // Save the last rendered cell |
| 1831 | lastX = x; |
| 1832 | |
| 1833 | // Physical is always updated |
| 1834 | physical[x][y].setTo(lCell); |
| 1835 | continue; |
| 1836 | } |
| 1837 | |
| 1838 | assert ((wideCharImages && !lCell.isImage()) |
| 1839 | || (!wideCharImages |
| 1840 | && (!lCell.isImage() |
| 1841 | || (lCell.isImage() |
| 1842 | && (lCell.getWidth() != Cell.Width.SINGLE))))); |
| 1843 | |
| 1844 | if (!wideCharImages && (lCell.getWidth() == Cell.Width.RIGHT)) { |
| 1845 | continue; |
| 1846 | } |
| 1847 | |
| 1848 | if (hasImage) { |
| 1849 | hasImage = false; |
| 1850 | sb.append(gotoXY(x, y)); |
| 1851 | } |
| 1852 | |
| 1853 | // Now emit only the modified attributes |
| 1854 | if ((lCell.getForeColor() != lastAttr.getForeColor()) |
| 1855 | && (lCell.getBackColor() != lastAttr.getBackColor()) |
| 1856 | && (!lCell.isRGB()) |
| 1857 | && (lCell.isBold() == lastAttr.isBold()) |
| 1858 | && (lCell.isReverse() == lastAttr.isReverse()) |
| 1859 | && (lCell.isUnderline() == lastAttr.isUnderline()) |
| 1860 | && (lCell.isBlink() == lastAttr.isBlink()) |
| 1861 | ) { |
| 1862 | // Both colors changed, attributes the same |
| 1863 | sb.append(color(lCell.isBold(), |
| 1864 | lCell.getForeColor(), lCell.getBackColor())); |
| 1865 | |
| 1866 | if (debugToStderr) { |
| 1867 | System.err.printf("1 Change only fore/back colors\n"); |
| 1868 | } |
| 1869 | |
| 1870 | } else if (lCell.isRGB() |
| 1871 | && (lCell.getForeColorRGB() != lastAttr.getForeColorRGB()) |
| 1872 | && (lCell.getBackColorRGB() != lastAttr.getBackColorRGB()) |
| 1873 | && (lCell.isBold() == lastAttr.isBold()) |
| 1874 | && (lCell.isReverse() == lastAttr.isReverse()) |
| 1875 | && (lCell.isUnderline() == lastAttr.isUnderline()) |
| 1876 | && (lCell.isBlink() == lastAttr.isBlink()) |
| 1877 | ) { |
| 1878 | // Both colors changed, attributes the same |
| 1879 | sb.append(colorRGB(lCell.getForeColorRGB(), |
| 1880 | lCell.getBackColorRGB())); |
| 1881 | |
| 1882 | if (debugToStderr) { |
| 1883 | System.err.printf("1 Change only fore/back colors (RGB)\n"); |
| 1884 | } |
| 1885 | } else if ((lCell.getForeColor() != lastAttr.getForeColor()) |
| 1886 | && (lCell.getBackColor() != lastAttr.getBackColor()) |
| 1887 | && (!lCell.isRGB()) |
| 1888 | && (lCell.isBold() != lastAttr.isBold()) |
| 1889 | && (lCell.isReverse() != lastAttr.isReverse()) |
| 1890 | && (lCell.isUnderline() != lastAttr.isUnderline()) |
| 1891 | && (lCell.isBlink() != lastAttr.isBlink()) |
| 1892 | ) { |
| 1893 | // Everything is different |
| 1894 | sb.append(color(lCell.getForeColor(), |
| 1895 | lCell.getBackColor(), |
| 1896 | lCell.isBold(), lCell.isReverse(), |
| 1897 | lCell.isBlink(), |
| 1898 | lCell.isUnderline())); |
| 1899 | |
| 1900 | if (debugToStderr) { |
| 1901 | System.err.printf("2 Set all attributes\n"); |
| 1902 | } |
| 1903 | } else if ((lCell.getForeColor() != lastAttr.getForeColor()) |
| 1904 | && (lCell.getBackColor() == lastAttr.getBackColor()) |
| 1905 | && (!lCell.isRGB()) |
| 1906 | && (lCell.isBold() == lastAttr.isBold()) |
| 1907 | && (lCell.isReverse() == lastAttr.isReverse()) |
| 1908 | && (lCell.isUnderline() == lastAttr.isUnderline()) |
| 1909 | && (lCell.isBlink() == lastAttr.isBlink()) |
| 1910 | ) { |
| 1911 | |
| 1912 | // Attributes same, foreColor different |
| 1913 | sb.append(color(lCell.isBold(), |
| 1914 | lCell.getForeColor(), true)); |
| 1915 | |
| 1916 | if (debugToStderr) { |
| 1917 | System.err.printf("3 Change foreColor\n"); |
| 1918 | } |
| 1919 | } else if (lCell.isRGB() |
| 1920 | && (lCell.getForeColorRGB() != lastAttr.getForeColorRGB()) |
| 1921 | && (lCell.getBackColorRGB() == lastAttr.getBackColorRGB()) |
| 1922 | && (lCell.getForeColorRGB() >= 0) |
| 1923 | && (lCell.getBackColorRGB() >= 0) |
| 1924 | && (lCell.isBold() == lastAttr.isBold()) |
| 1925 | && (lCell.isReverse() == lastAttr.isReverse()) |
| 1926 | && (lCell.isUnderline() == lastAttr.isUnderline()) |
| 1927 | && (lCell.isBlink() == lastAttr.isBlink()) |
| 1928 | ) { |
| 1929 | // Attributes same, foreColor different |
| 1930 | sb.append(colorRGB(lCell.getForeColorRGB(), true)); |
| 1931 | |
| 1932 | if (debugToStderr) { |
| 1933 | System.err.printf("3 Change foreColor (RGB)\n"); |
| 1934 | } |
| 1935 | } else if ((lCell.getForeColor() == lastAttr.getForeColor()) |
| 1936 | && (lCell.getBackColor() != lastAttr.getBackColor()) |
| 1937 | && (!lCell.isRGB()) |
| 1938 | && (lCell.isBold() == lastAttr.isBold()) |
| 1939 | && (lCell.isReverse() == lastAttr.isReverse()) |
| 1940 | && (lCell.isUnderline() == lastAttr.isUnderline()) |
| 1941 | && (lCell.isBlink() == lastAttr.isBlink()) |
| 1942 | ) { |
| 1943 | // Attributes same, backColor different |
| 1944 | sb.append(color(lCell.isBold(), |
| 1945 | lCell.getBackColor(), false)); |
| 1946 | |
| 1947 | if (debugToStderr) { |
| 1948 | System.err.printf("4 Change backColor\n"); |
| 1949 | } |
| 1950 | } else if (lCell.isRGB() |
| 1951 | && (lCell.getForeColorRGB() == lastAttr.getForeColorRGB()) |
| 1952 | && (lCell.getBackColorRGB() != lastAttr.getBackColorRGB()) |
| 1953 | && (lCell.isBold() == lastAttr.isBold()) |
| 1954 | && (lCell.isReverse() == lastAttr.isReverse()) |
| 1955 | && (lCell.isUnderline() == lastAttr.isUnderline()) |
| 1956 | && (lCell.isBlink() == lastAttr.isBlink()) |
| 1957 | ) { |
| 1958 | // Attributes same, foreColor different |
| 1959 | sb.append(colorRGB(lCell.getBackColorRGB(), false)); |
| 1960 | |
| 1961 | if (debugToStderr) { |
| 1962 | System.err.printf("4 Change backColor (RGB)\n"); |
| 1963 | } |
| 1964 | } else if ((lCell.getForeColor() == lastAttr.getForeColor()) |
| 1965 | && (lCell.getBackColor() == lastAttr.getBackColor()) |
| 1966 | && (lCell.getForeColorRGB() == lastAttr.getForeColorRGB()) |
| 1967 | && (lCell.getBackColorRGB() == lastAttr.getBackColorRGB()) |
| 1968 | && (lCell.isBold() == lastAttr.isBold()) |
| 1969 | && (lCell.isReverse() == lastAttr.isReverse()) |
| 1970 | && (lCell.isUnderline() == lastAttr.isUnderline()) |
| 1971 | && (lCell.isBlink() == lastAttr.isBlink()) |
| 1972 | ) { |
| 1973 | |
| 1974 | // All attributes the same, just print the char |
| 1975 | // NOP |
| 1976 | |
| 1977 | if (debugToStderr) { |
| 1978 | System.err.printf("5 Only emit character\n"); |
| 1979 | } |
| 1980 | } else { |
| 1981 | // Just reset everything again |
| 1982 | if (!lCell.isRGB()) { |
| 1983 | sb.append(color(lCell.getForeColor(), |
| 1984 | lCell.getBackColor(), |
| 1985 | lCell.isBold(), |
| 1986 | lCell.isReverse(), |
| 1987 | lCell.isBlink(), |
| 1988 | lCell.isUnderline())); |
| 1989 | |
| 1990 | if (debugToStderr) { |
| 1991 | System.err.printf("6 Change all attributes\n"); |
| 1992 | } |
| 1993 | } else { |
| 1994 | sb.append(colorRGB(lCell.getForeColorRGB(), |
| 1995 | lCell.getBackColorRGB(), |
| 1996 | lCell.isBold(), |
| 1997 | lCell.isReverse(), |
| 1998 | lCell.isBlink(), |
| 1999 | lCell.isUnderline())); |
| 2000 | if (debugToStderr) { |
| 2001 | System.err.printf("6 Change all attributes (RGB)\n"); |
| 2002 | } |
| 2003 | } |
| 2004 | |
| 2005 | } |
| 2006 | // Emit the character |
| 2007 | if (wideCharImages |
| 2008 | // Don't emit the right-half of full-width chars. |
| 2009 | || (!wideCharImages |
| 2010 | && (lCell.getWidth() != Cell.Width.RIGHT)) |
| 2011 | ) { |
| 2012 | sb.append(Character.toChars(lCell.getChar())); |
| 2013 | } |
| 2014 | |
| 2015 | // Save the last rendered cell |
| 2016 | lastX = x; |
| 2017 | lastAttr.setTo(lCell); |
| 2018 | |
| 2019 | // Physical is always updated |
| 2020 | physical[x][y].setTo(lCell); |
| 2021 | |
| 2022 | } // if (!lCell.equals(pCell) || (reallyCleared == true)) |
| 2023 | |
| 2024 | } // for (int x = 0; x < width; x++) |
| 2025 | } |
| 2026 | |
| 2027 | /** |
| 2028 | * Render the screen to a string that can be emitted to something that |
| 2029 | * knows how to process ECMA-48/ANSI X3.64 escape sequences. |
| 2030 | * |
| 2031 | * @param sb StringBuilder to write escape sequences to |
| 2032 | * @return escape sequences string that provides the updates to the |
| 2033 | * physical screen |
| 2034 | */ |
| 2035 | private String flushString(final StringBuilder sb) { |
| 2036 | CellAttributes attr = null; |
| 2037 | |
| 2038 | if (reallyCleared) { |
| 2039 | attr = new CellAttributes(); |
| 2040 | sb.append(clearAll()); |
| 2041 | } |
| 2042 | |
| 2043 | /* |
| 2044 | * For images support, draw all of the image output first, and then |
| 2045 | * draw everything else afterwards. This works OK, but performance |
| 2046 | * is still a drag on larger pictures. |
| 2047 | */ |
| 2048 | for (int y = 0; y < height; y++) { |
| 2049 | for (int x = 0; x < width; x++) { |
| 2050 | // If physical had non-image data that is now image data, the |
| 2051 | // entire row must be redrawn. |
| 2052 | Cell lCell = logical[x][y]; |
| 2053 | Cell pCell = physical[x][y]; |
| 2054 | if (lCell.isImage() && !pCell.isImage()) { |
| 2055 | unsetImageRow(y); |
| 2056 | break; |
| 2057 | } |
| 2058 | } |
| 2059 | } |
| 2060 | for (int y = 0; y < height; y++) { |
| 2061 | for (int x = 0; x < width; x++) { |
| 2062 | Cell lCell = logical[x][y]; |
| 2063 | Cell pCell = physical[x][y]; |
| 2064 | |
| 2065 | if (!lCell.isImage() |
| 2066 | || (!wideCharImages |
| 2067 | && (lCell.getWidth() != Cell.Width.SINGLE)) |
| 2068 | ) { |
| 2069 | continue; |
| 2070 | } |
| 2071 | |
| 2072 | int left = x; |
| 2073 | int right = x; |
| 2074 | while ((right < width) |
| 2075 | && (logical[right][y].isImage()) |
| 2076 | && (!logical[right][y].equals(physical[right][y]) |
| 2077 | || reallyCleared) |
| 2078 | ) { |
| 2079 | right++; |
| 2080 | } |
| 2081 | ArrayList<Cell> cellsToDraw = new ArrayList<Cell>(); |
| 2082 | for (int i = 0; i < (right - x); i++) { |
| 2083 | assert (logical[x + i][y].isImage()); |
| 2084 | cellsToDraw.add(logical[x + i][y]); |
| 2085 | |
| 2086 | // Physical is always updated. |
| 2087 | physical[x + i][y].setTo(lCell); |
| 2088 | } |
| 2089 | if (cellsToDraw.size() > 0) { |
| 2090 | if (iterm2Images) { |
| 2091 | sb.append(toIterm2Image(x, y, cellsToDraw)); |
| 2092 | } else if (jexerImageOption != JexerImageOption.DISABLED) { |
| 2093 | sb.append(toJexerImage(x, y, cellsToDraw)); |
| 2094 | } else { |
| 2095 | sb.append(toSixel(x, y, cellsToDraw)); |
| 2096 | } |
| 2097 | } |
| 2098 | |
| 2099 | x = right; |
| 2100 | } |
| 2101 | } |
| 2102 | |
| 2103 | // Draw the text part now. |
| 2104 | for (int y = 0; y < height; y++) { |
| 2105 | flushLine(y, sb, attr); |
| 2106 | } |
| 2107 | |
| 2108 | reallyCleared = false; |
| 2109 | |
| 2110 | String result = sb.toString(); |
| 2111 | if (debugToStderr) { |
| 2112 | System.err.printf("flushString(): %s\n", result); |
| 2113 | } |
| 2114 | return result; |
| 2115 | } |
| 2116 | |
| 2117 | /** |
| 2118 | * Reset keyboard/mouse input parser. |
| 2119 | */ |
| 2120 | private void resetParser() { |
| 2121 | state = ParseState.GROUND; |
| 2122 | params = new ArrayList<String>(); |
| 2123 | params.clear(); |
| 2124 | params.add(""); |
| 2125 | decPrivateModeFlag = false; |
| 2126 | } |
| 2127 | |
| 2128 | /** |
| 2129 | * Produce a control character or one of the special ones (ENTER, TAB, |
| 2130 | * etc.). |
| 2131 | * |
| 2132 | * @param ch Unicode code point |
| 2133 | * @param alt if true, set alt on the TKeypress |
| 2134 | * @return one TKeypress event, either a control character (e.g. isKey == |
| 2135 | * false, ch == 'A', ctrl == true), or a special key (e.g. isKey == true, |
| 2136 | * fnKey == ESC) |
| 2137 | */ |
| 2138 | private TKeypressEvent controlChar(final char ch, final boolean alt) { |
| 2139 | // System.err.printf("controlChar: %02x\n", ch); |
| 2140 | |
| 2141 | switch (ch) { |
| 2142 | case 0x0D: |
| 2143 | // Carriage return --> ENTER |
| 2144 | return new TKeypressEvent(kbEnter, alt, false, false); |
| 2145 | case 0x0A: |
| 2146 | // Linefeed --> ENTER |
| 2147 | return new TKeypressEvent(kbEnter, alt, false, false); |
| 2148 | case 0x1B: |
| 2149 | // ESC |
| 2150 | return new TKeypressEvent(kbEsc, alt, false, false); |
| 2151 | case '\t': |
| 2152 | // TAB |
| 2153 | return new TKeypressEvent(kbTab, alt, false, false); |
| 2154 | default: |
| 2155 | // Make all other control characters come back as the alphabetic |
| 2156 | // character with the ctrl field set. So SOH would be 'A' + |
| 2157 | // ctrl. |
| 2158 | return new TKeypressEvent(false, 0, (char)(ch + 0x40), |
| 2159 | alt, true, false); |
| 2160 | } |
| 2161 | } |
| 2162 | |
| 2163 | /** |
| 2164 | * Produce special key from CSI Pn ; Pm ; ... ~ |
| 2165 | * |
| 2166 | * @return one KEYPRESS event representing a special key |
| 2167 | */ |
| 2168 | private TInputEvent csiFnKey() { |
| 2169 | int key = 0; |
| 2170 | if (params.size() > 0) { |
| 2171 | key = Integer.parseInt(params.get(0)); |
| 2172 | } |
| 2173 | boolean alt = false; |
| 2174 | boolean ctrl = false; |
| 2175 | boolean shift = false; |
| 2176 | if (params.size() > 1) { |
| 2177 | shift = csiIsShift(params.get(1)); |
| 2178 | alt = csiIsAlt(params.get(1)); |
| 2179 | ctrl = csiIsCtrl(params.get(1)); |
| 2180 | } |
| 2181 | |
| 2182 | switch (key) { |
| 2183 | case 1: |
| 2184 | return new TKeypressEvent(kbHome, alt, ctrl, shift); |
| 2185 | case 2: |
| 2186 | return new TKeypressEvent(kbIns, alt, ctrl, shift); |
| 2187 | case 3: |
| 2188 | return new TKeypressEvent(kbDel, alt, ctrl, shift); |
| 2189 | case 4: |
| 2190 | return new TKeypressEvent(kbEnd, alt, ctrl, shift); |
| 2191 | case 5: |
| 2192 | return new TKeypressEvent(kbPgUp, alt, ctrl, shift); |
| 2193 | case 6: |
| 2194 | return new TKeypressEvent(kbPgDn, alt, ctrl, shift); |
| 2195 | case 15: |
| 2196 | return new TKeypressEvent(kbF5, alt, ctrl, shift); |
| 2197 | case 17: |
| 2198 | return new TKeypressEvent(kbF6, alt, ctrl, shift); |
| 2199 | case 18: |
| 2200 | return new TKeypressEvent(kbF7, alt, ctrl, shift); |
| 2201 | case 19: |
| 2202 | return new TKeypressEvent(kbF8, alt, ctrl, shift); |
| 2203 | case 20: |
| 2204 | return new TKeypressEvent(kbF9, alt, ctrl, shift); |
| 2205 | case 21: |
| 2206 | return new TKeypressEvent(kbF10, alt, ctrl, shift); |
| 2207 | case 23: |
| 2208 | return new TKeypressEvent(kbF11, alt, ctrl, shift); |
| 2209 | case 24: |
| 2210 | return new TKeypressEvent(kbF12, alt, ctrl, shift); |
| 2211 | default: |
| 2212 | // Unknown |
| 2213 | return null; |
| 2214 | } |
| 2215 | } |
| 2216 | |
| 2217 | /** |
| 2218 | * Produce mouse events based on "Any event tracking" and UTF-8 |
| 2219 | * coordinates. See |
| 2220 | * http://invisible-island.net/xterm/ctlseqs/ctlseqs.html#Mouse%20Tracking |
| 2221 | * |
| 2222 | * @return a MOUSE_MOTION, MOUSE_UP, or MOUSE_DOWN event |
| 2223 | */ |
| 2224 | private TInputEvent parseMouse() { |
| 2225 | int buttons = params.get(0).charAt(0) - 32; |
| 2226 | int x = params.get(0).charAt(1) - 32 - 1; |
| 2227 | int y = params.get(0).charAt(2) - 32 - 1; |
| 2228 | |
| 2229 | // Clamp X and Y to the physical screen coordinates. |
| 2230 | if (x >= windowResize.getWidth()) { |
| 2231 | x = windowResize.getWidth() - 1; |
| 2232 | } |
| 2233 | if (y >= windowResize.getHeight()) { |
| 2234 | y = windowResize.getHeight() - 1; |
| 2235 | } |
| 2236 | |
| 2237 | TMouseEvent.Type eventType = TMouseEvent.Type.MOUSE_DOWN; |
| 2238 | boolean eventMouse1 = false; |
| 2239 | boolean eventMouse2 = false; |
| 2240 | boolean eventMouse3 = false; |
| 2241 | boolean eventMouseWheelUp = false; |
| 2242 | boolean eventMouseWheelDown = false; |
| 2243 | |
| 2244 | // System.err.printf("buttons: %04x\r\n", buttons); |
| 2245 | |
| 2246 | switch (buttons) { |
| 2247 | case 0: |
| 2248 | eventMouse1 = true; |
| 2249 | mouse1 = true; |
| 2250 | break; |
| 2251 | case 1: |
| 2252 | eventMouse2 = true; |
| 2253 | mouse2 = true; |
| 2254 | break; |
| 2255 | case 2: |
| 2256 | eventMouse3 = true; |
| 2257 | mouse3 = true; |
| 2258 | break; |
| 2259 | case 3: |
| 2260 | // Release or Move |
| 2261 | if (!mouse1 && !mouse2 && !mouse3) { |
| 2262 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
| 2263 | } else { |
| 2264 | eventType = TMouseEvent.Type.MOUSE_UP; |
| 2265 | } |
| 2266 | if (mouse1) { |
| 2267 | mouse1 = false; |
| 2268 | eventMouse1 = true; |
| 2269 | } |
| 2270 | if (mouse2) { |
| 2271 | mouse2 = false; |
| 2272 | eventMouse2 = true; |
| 2273 | } |
| 2274 | if (mouse3) { |
| 2275 | mouse3 = false; |
| 2276 | eventMouse3 = true; |
| 2277 | } |
| 2278 | break; |
| 2279 | |
| 2280 | case 32: |
| 2281 | // Dragging with mouse1 down |
| 2282 | eventMouse1 = true; |
| 2283 | mouse1 = true; |
| 2284 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
| 2285 | break; |
| 2286 | |
| 2287 | case 33: |
| 2288 | // Dragging with mouse2 down |
| 2289 | eventMouse2 = true; |
| 2290 | mouse2 = true; |
| 2291 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
| 2292 | break; |
| 2293 | |
| 2294 | case 34: |
| 2295 | // Dragging with mouse3 down |
| 2296 | eventMouse3 = true; |
| 2297 | mouse3 = true; |
| 2298 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
| 2299 | break; |
| 2300 | |
| 2301 | case 96: |
| 2302 | // Dragging with mouse2 down after wheelUp |
| 2303 | eventMouse2 = true; |
| 2304 | mouse2 = true; |
| 2305 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
| 2306 | break; |
| 2307 | |
| 2308 | case 97: |
| 2309 | // Dragging with mouse2 down after wheelDown |
| 2310 | eventMouse2 = true; |
| 2311 | mouse2 = true; |
| 2312 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
| 2313 | break; |
| 2314 | |
| 2315 | case 64: |
| 2316 | eventMouseWheelUp = true; |
| 2317 | break; |
| 2318 | |
| 2319 | case 65: |
| 2320 | eventMouseWheelDown = true; |
| 2321 | break; |
| 2322 | |
| 2323 | default: |
| 2324 | // Unknown, just make it motion |
| 2325 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
| 2326 | break; |
| 2327 | } |
| 2328 | return new TMouseEvent(eventType, x, y, x, y, |
| 2329 | eventMouse1, eventMouse2, eventMouse3, |
| 2330 | eventMouseWheelUp, eventMouseWheelDown); |
| 2331 | } |
| 2332 | |
| 2333 | /** |
| 2334 | * Produce mouse events based on "Any event tracking" and SGR |
| 2335 | * coordinates. See |
| 2336 | * http://invisible-island.net/xterm/ctlseqs/ctlseqs.html#Mouse%20Tracking |
| 2337 | * |
| 2338 | * @param release if true, this was a release ('m') |
| 2339 | * @return a MOUSE_MOTION, MOUSE_UP, or MOUSE_DOWN event |
| 2340 | */ |
| 2341 | private TInputEvent parseMouseSGR(final boolean release) { |
| 2342 | // SGR extended coordinates - mode 1006 |
| 2343 | if (params.size() < 3) { |
| 2344 | // Invalid position, bail out. |
| 2345 | return null; |
| 2346 | } |
| 2347 | int buttons = Integer.parseInt(params.get(0)); |
| 2348 | int x = Integer.parseInt(params.get(1)) - 1; |
| 2349 | int y = Integer.parseInt(params.get(2)) - 1; |
| 2350 | |
| 2351 | // Clamp X and Y to the physical screen coordinates. |
| 2352 | if (x >= windowResize.getWidth()) { |
| 2353 | x = windowResize.getWidth() - 1; |
| 2354 | } |
| 2355 | if (y >= windowResize.getHeight()) { |
| 2356 | y = windowResize.getHeight() - 1; |
| 2357 | } |
| 2358 | |
| 2359 | TMouseEvent.Type eventType = TMouseEvent.Type.MOUSE_DOWN; |
| 2360 | boolean eventMouse1 = false; |
| 2361 | boolean eventMouse2 = false; |
| 2362 | boolean eventMouse3 = false; |
| 2363 | boolean eventMouseWheelUp = false; |
| 2364 | boolean eventMouseWheelDown = false; |
| 2365 | |
| 2366 | if (release) { |
| 2367 | eventType = TMouseEvent.Type.MOUSE_UP; |
| 2368 | } |
| 2369 | |
| 2370 | switch (buttons) { |
| 2371 | case 0: |
| 2372 | eventMouse1 = true; |
| 2373 | break; |
| 2374 | case 1: |
| 2375 | eventMouse2 = true; |
| 2376 | break; |
| 2377 | case 2: |
| 2378 | eventMouse3 = true; |
| 2379 | break; |
| 2380 | case 35: |
| 2381 | // Motion only, no buttons down |
| 2382 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
| 2383 | break; |
| 2384 | |
| 2385 | case 32: |
| 2386 | // Dragging with mouse1 down |
| 2387 | eventMouse1 = true; |
| 2388 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
| 2389 | break; |
| 2390 | |
| 2391 | case 33: |
| 2392 | // Dragging with mouse2 down |
| 2393 | eventMouse2 = true; |
| 2394 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
| 2395 | break; |
| 2396 | |
| 2397 | case 34: |
| 2398 | // Dragging with mouse3 down |
| 2399 | eventMouse3 = true; |
| 2400 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
| 2401 | break; |
| 2402 | |
| 2403 | case 96: |
| 2404 | // Dragging with mouse2 down after wheelUp |
| 2405 | eventMouse2 = true; |
| 2406 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
| 2407 | break; |
| 2408 | |
| 2409 | case 97: |
| 2410 | // Dragging with mouse2 down after wheelDown |
| 2411 | eventMouse2 = true; |
| 2412 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
| 2413 | break; |
| 2414 | |
| 2415 | case 64: |
| 2416 | eventMouseWheelUp = true; |
| 2417 | break; |
| 2418 | |
| 2419 | case 65: |
| 2420 | eventMouseWheelDown = true; |
| 2421 | break; |
| 2422 | |
| 2423 | default: |
| 2424 | // Unknown, bail out |
| 2425 | return null; |
| 2426 | } |
| 2427 | return new TMouseEvent(eventType, x, y, x, y, |
| 2428 | eventMouse1, eventMouse2, eventMouse3, |
| 2429 | eventMouseWheelUp, eventMouseWheelDown); |
| 2430 | } |
| 2431 | |
| 2432 | /** |
| 2433 | * Return any events in the IO queue due to timeout. |
| 2434 | * |
| 2435 | * @param queue list to append new events to |
| 2436 | */ |
| 2437 | private void getIdleEvents(final List<TInputEvent> queue) { |
| 2438 | long nowTime = System.currentTimeMillis(); |
| 2439 | |
| 2440 | // Check for new window size |
| 2441 | long windowSizeDelay = nowTime - windowSizeTime; |
| 2442 | if (windowSizeDelay > 1000) { |
| 2443 | int oldTextWidth = getTextWidth(); |
| 2444 | int oldTextHeight = getTextHeight(); |
| 2445 | |
| 2446 | sessionInfo.queryWindowSize(); |
| 2447 | int newWidth = sessionInfo.getWindowWidth(); |
| 2448 | int newHeight = sessionInfo.getWindowHeight(); |
| 2449 | |
| 2450 | if ((newWidth != windowResize.getWidth()) |
| 2451 | || (newHeight != windowResize.getHeight()) |
| 2452 | ) { |
| 2453 | |
| 2454 | // Request xterm report window dimensions in pixels again. |
| 2455 | // Between now and then, ensure that the reported text cell |
| 2456 | // size is the same by setting widthPixels and heightPixels |
| 2457 | // to match the new dimensions. |
| 2458 | widthPixels = oldTextWidth * newWidth; |
| 2459 | heightPixels = oldTextHeight * newHeight; |
| 2460 | |
| 2461 | if (debugToStderr) { |
| 2462 | System.err.println("Screen size changed, old size " + |
| 2463 | windowResize); |
| 2464 | System.err.println(" new size " + |
| 2465 | newWidth + " x " + newHeight); |
| 2466 | System.err.println(" old pixels " + |
| 2467 | oldTextWidth + " x " + oldTextHeight); |
| 2468 | System.err.println(" new pixels " + |
| 2469 | getTextWidth() + " x " + getTextHeight()); |
| 2470 | } |
| 2471 | |
| 2472 | this.output.printf("%s", xtermReportPixelDimensions()); |
| 2473 | this.output.flush(); |
| 2474 | |
| 2475 | TResizeEvent event = new TResizeEvent(TResizeEvent.Type.SCREEN, |
| 2476 | newWidth, newHeight); |
| 2477 | windowResize = new TResizeEvent(TResizeEvent.Type.SCREEN, |
| 2478 | newWidth, newHeight); |
| 2479 | queue.add(event); |
| 2480 | } |
| 2481 | windowSizeTime = nowTime; |
| 2482 | } |
| 2483 | |
| 2484 | // ESCDELAY type timeout |
| 2485 | if (state == ParseState.ESCAPE) { |
| 2486 | long escDelay = nowTime - escapeTime; |
| 2487 | if (escDelay > 100) { |
| 2488 | // After 0.1 seconds, assume a true escape character |
| 2489 | queue.add(controlChar((char)0x1B, false)); |
| 2490 | resetParser(); |
| 2491 | } |
| 2492 | } |
| 2493 | } |
| 2494 | |
| 2495 | /** |
| 2496 | * Returns true if the CSI parameter for a keyboard command means that |
| 2497 | * shift was down. |
| 2498 | */ |
| 2499 | private boolean csiIsShift(final String x) { |
| 2500 | if ((x.equals("2")) |
| 2501 | || (x.equals("4")) |
| 2502 | || (x.equals("6")) |
| 2503 | || (x.equals("8")) |
| 2504 | ) { |
| 2505 | return true; |
| 2506 | } |
| 2507 | return false; |
| 2508 | } |
| 2509 | |
| 2510 | /** |
| 2511 | * Returns true if the CSI parameter for a keyboard command means that |
| 2512 | * alt was down. |
| 2513 | */ |
| 2514 | private boolean csiIsAlt(final String x) { |
| 2515 | if ((x.equals("3")) |
| 2516 | || (x.equals("4")) |
| 2517 | || (x.equals("7")) |
| 2518 | || (x.equals("8")) |
| 2519 | ) { |
| 2520 | return true; |
| 2521 | } |
| 2522 | return false; |
| 2523 | } |
| 2524 | |
| 2525 | /** |
| 2526 | * Returns true if the CSI parameter for a keyboard command means that |
| 2527 | * ctrl was down. |
| 2528 | */ |
| 2529 | private boolean csiIsCtrl(final String x) { |
| 2530 | if ((x.equals("5")) |
| 2531 | || (x.equals("6")) |
| 2532 | || (x.equals("7")) |
| 2533 | || (x.equals("8")) |
| 2534 | ) { |
| 2535 | return true; |
| 2536 | } |
| 2537 | return false; |
| 2538 | } |
| 2539 | |
| 2540 | /** |
| 2541 | * Parses the next character of input to see if an InputEvent is |
| 2542 | * fully here. |
| 2543 | * |
| 2544 | * @param events list to append new events to |
| 2545 | * @param ch Unicode code point |
| 2546 | */ |
| 2547 | private void processChar(final List<TInputEvent> events, final char ch) { |
| 2548 | |
| 2549 | // ESCDELAY type timeout |
| 2550 | long nowTime = System.currentTimeMillis(); |
| 2551 | if (state == ParseState.ESCAPE) { |
| 2552 | long escDelay = nowTime - escapeTime; |
| 2553 | if (escDelay > 250) { |
| 2554 | // After 0.25 seconds, assume a true escape character |
| 2555 | events.add(controlChar((char)0x1B, false)); |
| 2556 | resetParser(); |
| 2557 | } |
| 2558 | } |
| 2559 | |
| 2560 | // TKeypress fields |
| 2561 | boolean ctrl = false; |
| 2562 | boolean alt = false; |
| 2563 | boolean shift = false; |
| 2564 | |
| 2565 | // System.err.printf("state: %s ch %c\r\n", state, ch); |
| 2566 | |
| 2567 | switch (state) { |
| 2568 | case GROUND: |
| 2569 | |
| 2570 | if (ch == 0x1B) { |
| 2571 | state = ParseState.ESCAPE; |
| 2572 | escapeTime = nowTime; |
| 2573 | return; |
| 2574 | } |
| 2575 | |
| 2576 | if (ch <= 0x1F) { |
| 2577 | // Control character |
| 2578 | events.add(controlChar(ch, false)); |
| 2579 | resetParser(); |
| 2580 | return; |
| 2581 | } |
| 2582 | |
| 2583 | if (ch >= 0x20) { |
| 2584 | // Normal character |
| 2585 | events.add(new TKeypressEvent(false, 0, ch, |
| 2586 | false, false, false)); |
| 2587 | resetParser(); |
| 2588 | return; |
| 2589 | } |
| 2590 | |
| 2591 | break; |
| 2592 | |
| 2593 | case ESCAPE: |
| 2594 | if (ch <= 0x1F) { |
| 2595 | // ALT-Control character |
| 2596 | events.add(controlChar(ch, true)); |
| 2597 | resetParser(); |
| 2598 | return; |
| 2599 | } |
| 2600 | |
| 2601 | if (ch == 'O') { |
| 2602 | // This will be one of the function keys |
| 2603 | state = ParseState.ESCAPE_INTERMEDIATE; |
| 2604 | return; |
| 2605 | } |
| 2606 | |
| 2607 | // '[' goes to CSI_ENTRY |
| 2608 | if (ch == '[') { |
| 2609 | state = ParseState.CSI_ENTRY; |
| 2610 | return; |
| 2611 | } |
| 2612 | |
| 2613 | // Everything else is assumed to be Alt-keystroke |
| 2614 | if ((ch >= 'A') && (ch <= 'Z')) { |
| 2615 | shift = true; |
| 2616 | } |
| 2617 | alt = true; |
| 2618 | events.add(new TKeypressEvent(false, 0, ch, alt, ctrl, shift)); |
| 2619 | resetParser(); |
| 2620 | return; |
| 2621 | |
| 2622 | case ESCAPE_INTERMEDIATE: |
| 2623 | if ((ch >= 'P') && (ch <= 'S')) { |
| 2624 | // Function key |
| 2625 | switch (ch) { |
| 2626 | case 'P': |
| 2627 | events.add(new TKeypressEvent(kbF1)); |
| 2628 | break; |
| 2629 | case 'Q': |
| 2630 | events.add(new TKeypressEvent(kbF2)); |
| 2631 | break; |
| 2632 | case 'R': |
| 2633 | events.add(new TKeypressEvent(kbF3)); |
| 2634 | break; |
| 2635 | case 'S': |
| 2636 | events.add(new TKeypressEvent(kbF4)); |
| 2637 | break; |
| 2638 | default: |
| 2639 | break; |
| 2640 | } |
| 2641 | resetParser(); |
| 2642 | return; |
| 2643 | } |
| 2644 | |
| 2645 | // Unknown keystroke, ignore |
| 2646 | resetParser(); |
| 2647 | return; |
| 2648 | |
| 2649 | case CSI_ENTRY: |
| 2650 | // Numbers - parameter values |
| 2651 | if ((ch >= '0') && (ch <= '9')) { |
| 2652 | params.set(params.size() - 1, |
| 2653 | params.get(params.size() - 1) + ch); |
| 2654 | state = ParseState.CSI_PARAM; |
| 2655 | return; |
| 2656 | } |
| 2657 | // Parameter separator |
| 2658 | if (ch == ';') { |
| 2659 | params.add(""); |
| 2660 | return; |
| 2661 | } |
| 2662 | |
| 2663 | if ((ch >= 0x30) && (ch <= 0x7E)) { |
| 2664 | switch (ch) { |
| 2665 | case 'A': |
| 2666 | // Up |
| 2667 | events.add(new TKeypressEvent(kbUp, alt, ctrl, shift)); |
| 2668 | resetParser(); |
| 2669 | return; |
| 2670 | case 'B': |
| 2671 | // Down |
| 2672 | events.add(new TKeypressEvent(kbDown, alt, ctrl, shift)); |
| 2673 | resetParser(); |
| 2674 | return; |
| 2675 | case 'C': |
| 2676 | // Right |
| 2677 | events.add(new TKeypressEvent(kbRight, alt, ctrl, shift)); |
| 2678 | resetParser(); |
| 2679 | return; |
| 2680 | case 'D': |
| 2681 | // Left |
| 2682 | events.add(new TKeypressEvent(kbLeft, alt, ctrl, shift)); |
| 2683 | resetParser(); |
| 2684 | return; |
| 2685 | case 'H': |
| 2686 | // Home |
| 2687 | events.add(new TKeypressEvent(kbHome)); |
| 2688 | resetParser(); |
| 2689 | return; |
| 2690 | case 'F': |
| 2691 | // End |
| 2692 | events.add(new TKeypressEvent(kbEnd)); |
| 2693 | resetParser(); |
| 2694 | return; |
| 2695 | case 'Z': |
| 2696 | // CBT - Cursor backward X tab stops (default 1) |
| 2697 | events.add(new TKeypressEvent(kbBackTab)); |
| 2698 | resetParser(); |
| 2699 | return; |
| 2700 | case 'M': |
| 2701 | // Mouse position |
| 2702 | state = ParseState.MOUSE; |
| 2703 | return; |
| 2704 | case '<': |
| 2705 | // Mouse position, SGR (1006) coordinates |
| 2706 | state = ParseState.MOUSE_SGR; |
| 2707 | return; |
| 2708 | case '?': |
| 2709 | // DEC private mode flag |
| 2710 | decPrivateModeFlag = true; |
| 2711 | return; |
| 2712 | default: |
| 2713 | break; |
| 2714 | } |
| 2715 | } |
| 2716 | |
| 2717 | // Unknown keystroke, ignore |
| 2718 | resetParser(); |
| 2719 | return; |
| 2720 | |
| 2721 | case MOUSE_SGR: |
| 2722 | // Numbers - parameter values |
| 2723 | if ((ch >= '0') && (ch <= '9')) { |
| 2724 | params.set(params.size() - 1, |
| 2725 | params.get(params.size() - 1) + ch); |
| 2726 | return; |
| 2727 | } |
| 2728 | // Parameter separator |
| 2729 | if (ch == ';') { |
| 2730 | params.add(""); |
| 2731 | return; |
| 2732 | } |
| 2733 | |
| 2734 | switch (ch) { |
| 2735 | case 'M': |
| 2736 | // Generate a mouse press event |
| 2737 | TInputEvent event = parseMouseSGR(false); |
| 2738 | if (event != null) { |
| 2739 | events.add(event); |
| 2740 | } |
| 2741 | resetParser(); |
| 2742 | return; |
| 2743 | case 'm': |
| 2744 | // Generate a mouse release event |
| 2745 | event = parseMouseSGR(true); |
| 2746 | if (event != null) { |
| 2747 | events.add(event); |
| 2748 | } |
| 2749 | resetParser(); |
| 2750 | return; |
| 2751 | default: |
| 2752 | break; |
| 2753 | } |
| 2754 | |
| 2755 | // Unknown keystroke, ignore |
| 2756 | resetParser(); |
| 2757 | return; |
| 2758 | |
| 2759 | case CSI_PARAM: |
| 2760 | // Numbers - parameter values |
| 2761 | if ((ch >= '0') && (ch <= '9')) { |
| 2762 | params.set(params.size() - 1, |
| 2763 | params.get(params.size() - 1) + ch); |
| 2764 | state = ParseState.CSI_PARAM; |
| 2765 | return; |
| 2766 | } |
| 2767 | // Parameter separator |
| 2768 | if (ch == ';') { |
| 2769 | params.add(""); |
| 2770 | return; |
| 2771 | } |
| 2772 | |
| 2773 | if (ch == '~') { |
| 2774 | events.add(csiFnKey()); |
| 2775 | resetParser(); |
| 2776 | return; |
| 2777 | } |
| 2778 | |
| 2779 | if ((ch >= 0x30) && (ch <= 0x7E)) { |
| 2780 | switch (ch) { |
| 2781 | case 'A': |
| 2782 | // Up |
| 2783 | if (params.size() > 1) { |
| 2784 | shift = csiIsShift(params.get(1)); |
| 2785 | alt = csiIsAlt(params.get(1)); |
| 2786 | ctrl = csiIsCtrl(params.get(1)); |
| 2787 | } |
| 2788 | events.add(new TKeypressEvent(kbUp, alt, ctrl, shift)); |
| 2789 | resetParser(); |
| 2790 | return; |
| 2791 | case 'B': |
| 2792 | // Down |
| 2793 | if (params.size() > 1) { |
| 2794 | shift = csiIsShift(params.get(1)); |
| 2795 | alt = csiIsAlt(params.get(1)); |
| 2796 | ctrl = csiIsCtrl(params.get(1)); |
| 2797 | } |
| 2798 | events.add(new TKeypressEvent(kbDown, alt, ctrl, shift)); |
| 2799 | resetParser(); |
| 2800 | return; |
| 2801 | case 'C': |
| 2802 | // Right |
| 2803 | if (params.size() > 1) { |
| 2804 | shift = csiIsShift(params.get(1)); |
| 2805 | alt = csiIsAlt(params.get(1)); |
| 2806 | ctrl = csiIsCtrl(params.get(1)); |
| 2807 | } |
| 2808 | events.add(new TKeypressEvent(kbRight, alt, ctrl, shift)); |
| 2809 | resetParser(); |
| 2810 | return; |
| 2811 | case 'D': |
| 2812 | // Left |
| 2813 | if (params.size() > 1) { |
| 2814 | shift = csiIsShift(params.get(1)); |
| 2815 | alt = csiIsAlt(params.get(1)); |
| 2816 | ctrl = csiIsCtrl(params.get(1)); |
| 2817 | } |
| 2818 | events.add(new TKeypressEvent(kbLeft, alt, ctrl, shift)); |
| 2819 | resetParser(); |
| 2820 | return; |
| 2821 | case 'H': |
| 2822 | // Home |
| 2823 | if (params.size() > 1) { |
| 2824 | shift = csiIsShift(params.get(1)); |
| 2825 | alt = csiIsAlt(params.get(1)); |
| 2826 | ctrl = csiIsCtrl(params.get(1)); |
| 2827 | } |
| 2828 | events.add(new TKeypressEvent(kbHome, alt, ctrl, shift)); |
| 2829 | resetParser(); |
| 2830 | return; |
| 2831 | case 'F': |
| 2832 | // End |
| 2833 | if (params.size() > 1) { |
| 2834 | shift = csiIsShift(params.get(1)); |
| 2835 | alt = csiIsAlt(params.get(1)); |
| 2836 | ctrl = csiIsCtrl(params.get(1)); |
| 2837 | } |
| 2838 | events.add(new TKeypressEvent(kbEnd, alt, ctrl, shift)); |
| 2839 | resetParser(); |
| 2840 | return; |
| 2841 | case 'c': |
| 2842 | // Device Attributes |
| 2843 | if (decPrivateModeFlag == false) { |
| 2844 | break; |
| 2845 | } |
| 2846 | boolean jexerImages = false; |
| 2847 | for (String x: params) { |
| 2848 | if (x.equals("4")) { |
| 2849 | // Terminal reports sixel support |
| 2850 | if (debugToStderr) { |
| 2851 | System.err.println("Device Attributes: sixel"); |
| 2852 | } |
| 2853 | } |
| 2854 | if (x.equals("444")) { |
| 2855 | // Terminal reports Jexer images support |
| 2856 | if (debugToStderr) { |
| 2857 | System.err.println("Device Attributes: Jexer images"); |
| 2858 | } |
| 2859 | jexerImages = true; |
| 2860 | } |
| 2861 | } |
| 2862 | if (jexerImages == false) { |
| 2863 | // Terminal does not support Jexer images, disable |
| 2864 | // them. |
| 2865 | jexerImageOption = JexerImageOption.DISABLED; |
| 2866 | } |
| 2867 | return; |
| 2868 | case 't': |
| 2869 | // windowOps |
| 2870 | if ((params.size() > 2) && (params.get(0).equals("4"))) { |
| 2871 | if (debugToStderr) { |
| 2872 | System.err.printf("windowOp pixels: " + |
| 2873 | "height %s width %s\n", |
| 2874 | params.get(1), params.get(2)); |
| 2875 | } |
| 2876 | try { |
| 2877 | widthPixels = Integer.parseInt(params.get(2)); |
| 2878 | heightPixels = Integer.parseInt(params.get(1)); |
| 2879 | } catch (NumberFormatException e) { |
| 2880 | if (debugToStderr) { |
| 2881 | e.printStackTrace(); |
| 2882 | } |
| 2883 | } |
| 2884 | if (widthPixels <= 0) { |
| 2885 | widthPixels = 640; |
| 2886 | } |
| 2887 | if (heightPixels <= 0) { |
| 2888 | heightPixels = 400; |
| 2889 | } |
| 2890 | } |
| 2891 | if ((params.size() > 2) && (params.get(0).equals("6"))) { |
| 2892 | if (debugToStderr) { |
| 2893 | System.err.printf("windowOp text cell pixels: " + |
| 2894 | "height %s width %s\n", |
| 2895 | params.get(1), params.get(2)); |
| 2896 | } |
| 2897 | try { |
| 2898 | widthPixels = width * Integer.parseInt(params.get(2)); |
| 2899 | heightPixels = height * Integer.parseInt(params.get(1)); |
| 2900 | } catch (NumberFormatException e) { |
| 2901 | if (debugToStderr) { |
| 2902 | e.printStackTrace(); |
| 2903 | } |
| 2904 | } |
| 2905 | if (widthPixels <= 0) { |
| 2906 | widthPixels = 640; |
| 2907 | } |
| 2908 | if (heightPixels <= 0) { |
| 2909 | heightPixels = 400; |
| 2910 | } |
| 2911 | } |
| 2912 | resetParser(); |
| 2913 | return; |
| 2914 | default: |
| 2915 | break; |
| 2916 | } |
| 2917 | } |
| 2918 | |
| 2919 | // Unknown keystroke, ignore |
| 2920 | resetParser(); |
| 2921 | return; |
| 2922 | |
| 2923 | case MOUSE: |
| 2924 | params.set(0, params.get(params.size() - 1) + ch); |
| 2925 | if (params.get(0).length() == 3) { |
| 2926 | // We have enough to generate a mouse event |
| 2927 | events.add(parseMouse()); |
| 2928 | resetParser(); |
| 2929 | } |
| 2930 | return; |
| 2931 | |
| 2932 | default: |
| 2933 | break; |
| 2934 | } |
| 2935 | |
| 2936 | // This "should" be impossible to reach |
| 2937 | return; |
| 2938 | } |
| 2939 | |
| 2940 | /** |
| 2941 | * Request (u)xterm to use the sixel settings we need: |
| 2942 | * |
| 2943 | * - enable sixel scrolling |
| 2944 | * |
| 2945 | * - disable private color registers (so that we can use one common |
| 2946 | * palette) if sixelSharedPalette is set |
| 2947 | * |
| 2948 | * @return the string to emit to xterm |
| 2949 | */ |
| 2950 | private String xtermSetSixelSettings() { |
| 2951 | if (sixelSharedPalette == true) { |
| 2952 | return "\033[?80h\033[?1070l"; |
| 2953 | } else { |
| 2954 | return "\033[?80h\033[?1070h"; |
| 2955 | } |
| 2956 | } |
| 2957 | |
| 2958 | /** |
| 2959 | * Restore (u)xterm its default sixel settings: |
| 2960 | * |
| 2961 | * - enable sixel scrolling |
| 2962 | * |
| 2963 | * - enable private color registers |
| 2964 | * |
| 2965 | * @return the string to emit to xterm |
| 2966 | */ |
| 2967 | private String xtermResetSixelSettings() { |
| 2968 | return "\033[?80h\033[?1070h"; |
| 2969 | } |
| 2970 | |
| 2971 | /** |
| 2972 | * Request (u)xterm to report the current window and cell size dimensions |
| 2973 | * in pixels. |
| 2974 | * |
| 2975 | * @return the string to emit to xterm |
| 2976 | */ |
| 2977 | private String xtermReportPixelDimensions() { |
| 2978 | // We will ask for both window and text cell dimensions, and |
| 2979 | // hopefully one of them will work. |
| 2980 | return "\033[14t\033[16t"; |
| 2981 | } |
| 2982 | |
| 2983 | /** |
| 2984 | * Tell (u)xterm that we want alt- keystrokes to send escape + character |
| 2985 | * rather than set the 8th bit. Anyone who wants UTF8 should want this |
| 2986 | * enabled. |
| 2987 | * |
| 2988 | * @param on if true, enable metaSendsEscape |
| 2989 | * @return the string to emit to xterm |
| 2990 | */ |
| 2991 | private String xtermMetaSendsEscape(final boolean on) { |
| 2992 | if (on) { |
| 2993 | return "\033[?1036h\033[?1034l"; |
| 2994 | } |
| 2995 | return "\033[?1036l"; |
| 2996 | } |
| 2997 | |
| 2998 | /** |
| 2999 | * Create an xterm OSC sequence to change the window title. |
| 3000 | * |
| 3001 | * @param title the new title |
| 3002 | * @return the string to emit to xterm |
| 3003 | */ |
| 3004 | private String getSetTitleString(final String title) { |
| 3005 | return "\033]2;" + title + "\007"; |
| 3006 | } |
| 3007 | |
| 3008 | // ------------------------------------------------------------------------ |
| 3009 | // Sixel output support --------------------------------------------------- |
| 3010 | // ------------------------------------------------------------------------ |
| 3011 | |
| 3012 | /** |
| 3013 | * Get the number of colors in the sixel palette. |
| 3014 | * |
| 3015 | * @return the palette size |
| 3016 | */ |
| 3017 | public int getSixelPaletteSize() { |
| 3018 | return sixelPaletteSize; |
| 3019 | } |
| 3020 | |
| 3021 | /** |
| 3022 | * Set the number of colors in the sixel palette. |
| 3023 | * |
| 3024 | * @param paletteSize the new palette size |
| 3025 | */ |
| 3026 | public void setSixelPaletteSize(final int paletteSize) { |
| 3027 | if (paletteSize == sixelPaletteSize) { |
| 3028 | return; |
| 3029 | } |
| 3030 | |
| 3031 | switch (paletteSize) { |
| 3032 | case 2: |
| 3033 | case 256: |
| 3034 | case 512: |
| 3035 | case 1024: |
| 3036 | case 2048: |
| 3037 | break; |
| 3038 | default: |
| 3039 | throw new IllegalArgumentException("Unsupported sixel palette " + |
| 3040 | " size: " + paletteSize); |
| 3041 | } |
| 3042 | |
| 3043 | // Don't step on the screen refresh thread. |
| 3044 | synchronized (this) { |
| 3045 | sixelPaletteSize = paletteSize; |
| 3046 | palette = null; |
| 3047 | sixelCache = null; |
| 3048 | clearPhysical(); |
| 3049 | } |
| 3050 | } |
| 3051 | |
| 3052 | /** |
| 3053 | * Start a sixel string for display one row's worth of bitmap data. |
| 3054 | * |
| 3055 | * @param x column coordinate. 0 is the left-most column. |
| 3056 | * @param y row coordinate. 0 is the top-most row. |
| 3057 | * @return the string to emit to an ANSI / ECMA-style terminal |
| 3058 | */ |
| 3059 | private String startSixel(final int x, final int y) { |
| 3060 | StringBuilder sb = new StringBuilder(); |
| 3061 | |
| 3062 | assert (sixel == true); |
| 3063 | |
| 3064 | // Place the cursor |
| 3065 | sb.append(gotoXY(x, y)); |
| 3066 | |
| 3067 | // DCS |
| 3068 | sb.append("\033Pq"); |
| 3069 | |
| 3070 | if (palette == null) { |
| 3071 | palette = new SixelPalette(); |
| 3072 | if (sixelSharedPalette == true) { |
| 3073 | palette.emitPalette(sb, null); |
| 3074 | } |
| 3075 | } |
| 3076 | |
| 3077 | return sb.toString(); |
| 3078 | } |
| 3079 | |
| 3080 | /** |
| 3081 | * End a sixel string for display one row's worth of bitmap data. |
| 3082 | * |
| 3083 | * @return the string to emit to an ANSI / ECMA-style terminal |
| 3084 | */ |
| 3085 | private String endSixel() { |
| 3086 | assert (sixel == true); |
| 3087 | |
| 3088 | // ST |
| 3089 | return ("\033\\"); |
| 3090 | } |
| 3091 | |
| 3092 | /** |
| 3093 | * Create a sixel string representing a row of several cells containing |
| 3094 | * bitmap data. |
| 3095 | * |
| 3096 | * @param x column coordinate. 0 is the left-most column. |
| 3097 | * @param y row coordinate. 0 is the top-most row. |
| 3098 | * @param cells the cells containing the bitmap data |
| 3099 | * @return the string to emit to an ANSI / ECMA-style terminal |
| 3100 | */ |
| 3101 | private String toSixel(final int x, final int y, |
| 3102 | final ArrayList<Cell> cells) { |
| 3103 | |
| 3104 | StringBuilder sb = new StringBuilder(); |
| 3105 | |
| 3106 | assert (cells != null); |
| 3107 | assert (cells.size() > 0); |
| 3108 | assert (cells.get(0).getImage() != null); |
| 3109 | |
| 3110 | if (sixel == false) { |
| 3111 | sb.append(normal()); |
| 3112 | sb.append(gotoXY(x, y)); |
| 3113 | for (int i = 0; i < cells.size(); i++) { |
| 3114 | sb.append(' '); |
| 3115 | } |
| 3116 | return sb.toString(); |
| 3117 | } |
| 3118 | |
| 3119 | if (y == height - 1) { |
| 3120 | // We are on the bottom row. If scrolling mode is enabled |
| 3121 | // (default), then VT320/xterm will scroll the entire screen if |
| 3122 | // we draw any pixels here. Do not draw the image, bail out |
| 3123 | // instead. |
| 3124 | sb.append(normal()); |
| 3125 | sb.append(gotoXY(x, y)); |
| 3126 | for (int j = 0; j < cells.size(); j++) { |
| 3127 | sb.append(' '); |
| 3128 | } |
| 3129 | return sb.toString(); |
| 3130 | } |
| 3131 | |
| 3132 | if (sixelCache == null) { |
| 3133 | sixelCache = new ImageCache(height * 10); |
| 3134 | } |
| 3135 | |
| 3136 | // Save and get rows to/from the cache that do NOT have inverted |
| 3137 | // cells. |
| 3138 | boolean saveInCache = true; |
| 3139 | for (Cell cell: cells) { |
| 3140 | if (cell.isInvertedImage()) { |
| 3141 | saveInCache = false; |
| 3142 | } |
| 3143 | } |
| 3144 | if (saveInCache) { |
| 3145 | String cachedResult = sixelCache.get(cells); |
| 3146 | if (cachedResult != null) { |
| 3147 | // System.err.println("CACHE HIT"); |
| 3148 | sb.append(startSixel(x, y)); |
| 3149 | sb.append(cachedResult); |
| 3150 | sb.append(endSixel()); |
| 3151 | return sb.toString(); |
| 3152 | } |
| 3153 | // System.err.println("CACHE MISS"); |
| 3154 | } |
| 3155 | |
| 3156 | int imageWidth = cells.get(0).getImage().getWidth(); |
| 3157 | int imageHeight = cells.get(0).getImage().getHeight(); |
| 3158 | |
| 3159 | // cells.get(x).getImage() has a dithered bitmap containing indexes |
| 3160 | // into the color palette. Piece these together into one larger |
| 3161 | // image for final rendering. |
| 3162 | int totalWidth = 0; |
| 3163 | int fullWidth = cells.size() * getTextWidth(); |
| 3164 | int fullHeight = getTextHeight(); |
| 3165 | for (int i = 0; i < cells.size(); i++) { |
| 3166 | totalWidth += cells.get(i).getImage().getWidth(); |
| 3167 | } |
| 3168 | |
| 3169 | BufferedImage image = new BufferedImage(fullWidth, |
| 3170 | fullHeight, BufferedImage.TYPE_INT_ARGB); |
| 3171 | |
| 3172 | int [] rgbArray; |
| 3173 | for (int i = 0; i < cells.size() - 1; i++) { |
| 3174 | int tileWidth = Math.min(cells.get(i).getImage().getWidth(), |
| 3175 | imageWidth); |
| 3176 | int tileHeight = Math.min(cells.get(i).getImage().getHeight(), |
| 3177 | imageHeight); |
| 3178 | |
| 3179 | if (false && cells.get(i).isInvertedImage()) { |
| 3180 | // I used to put an all-white cell over the cursor, don't do |
| 3181 | // that anymore. |
| 3182 | rgbArray = new int[imageWidth * imageHeight]; |
| 3183 | for (int j = 0; j < rgbArray.length; j++) { |
| 3184 | rgbArray[j] = 0xFFFFFF; |
| 3185 | } |
| 3186 | } else { |
| 3187 | try { |
| 3188 | rgbArray = cells.get(i).getImage().getRGB(0, 0, |
| 3189 | tileWidth, tileHeight, null, 0, tileWidth); |
| 3190 | } catch (Exception e) { |
| 3191 | throw new RuntimeException("image " + imageWidth + "x" + |
| 3192 | imageHeight + |
| 3193 | "tile " + tileWidth + "x" + |
| 3194 | tileHeight + |
| 3195 | " cells.get(i).getImage() " + |
| 3196 | cells.get(i).getImage() + |
| 3197 | " i " + i + |
| 3198 | " fullWidth " + fullWidth + |
| 3199 | " fullHeight " + fullHeight, e); |
| 3200 | } |
| 3201 | } |
| 3202 | |
| 3203 | /* |
| 3204 | System.err.printf("calling image.setRGB(): %d %d %d %d %d\n", |
| 3205 | i * imageWidth, 0, imageWidth, imageHeight, |
| 3206 | 0, imageWidth); |
| 3207 | System.err.printf(" fullWidth %d fullHeight %d cells.size() %d textWidth %d\n", |
| 3208 | fullWidth, fullHeight, cells.size(), getTextWidth()); |
| 3209 | */ |
| 3210 | |
| 3211 | image.setRGB(i * imageWidth, 0, tileWidth, tileHeight, |
| 3212 | rgbArray, 0, tileWidth); |
| 3213 | if (tileHeight < fullHeight) { |
| 3214 | int backgroundColor = cells.get(i).getBackground().getRGB(); |
| 3215 | for (int imageX = 0; imageX < image.getWidth(); imageX++) { |
| 3216 | for (int imageY = imageHeight; imageY < fullHeight; |
| 3217 | imageY++) { |
| 3218 | |
| 3219 | image.setRGB(imageX, imageY, backgroundColor); |
| 3220 | } |
| 3221 | } |
| 3222 | } |
| 3223 | } |
| 3224 | totalWidth -= ((cells.size() - 1) * imageWidth); |
| 3225 | if (false && cells.get(cells.size() - 1).isInvertedImage()) { |
| 3226 | // I used to put an all-white cell over the cursor, don't do that |
| 3227 | // anymore. |
| 3228 | rgbArray = new int[totalWidth * imageHeight]; |
| 3229 | for (int j = 0; j < rgbArray.length; j++) { |
| 3230 | rgbArray[j] = 0xFFFFFF; |
| 3231 | } |
| 3232 | } else { |
| 3233 | try { |
| 3234 | rgbArray = cells.get(cells.size() - 1).getImage().getRGB(0, 0, |
| 3235 | totalWidth, imageHeight, null, 0, totalWidth); |
| 3236 | } catch (Exception e) { |
| 3237 | throw new RuntimeException("image " + imageWidth + "x" + |
| 3238 | imageHeight + " cells.get(cells.size() - 1).getImage() " + |
| 3239 | cells.get(cells.size() - 1).getImage(), e); |
| 3240 | } |
| 3241 | } |
| 3242 | image.setRGB((cells.size() - 1) * imageWidth, 0, totalWidth, |
| 3243 | imageHeight, rgbArray, 0, totalWidth); |
| 3244 | |
| 3245 | if (totalWidth < getTextWidth()) { |
| 3246 | int backgroundColor = cells.get(cells.size() - 1).getBackground().getRGB(); |
| 3247 | |
| 3248 | for (int imageX = image.getWidth() - totalWidth; |
| 3249 | imageX < image.getWidth(); imageX++) { |
| 3250 | |
| 3251 | for (int imageY = 0; imageY < fullHeight; imageY++) { |
| 3252 | image.setRGB(imageX, imageY, backgroundColor); |
| 3253 | } |
| 3254 | } |
| 3255 | } |
| 3256 | |
| 3257 | // Dither the image. It is ok to lose the original here. |
| 3258 | if (palette == null) { |
| 3259 | palette = new SixelPalette(); |
| 3260 | if (sixelSharedPalette == true) { |
| 3261 | palette.emitPalette(sb, null); |
| 3262 | } |
| 3263 | } |
| 3264 | image = palette.ditherImage(image); |
| 3265 | |
| 3266 | // Collect the raster information |
| 3267 | int rasterHeight = 0; |
| 3268 | int rasterWidth = image.getWidth(); |
| 3269 | |
| 3270 | if (sixelSharedPalette == false) { |
| 3271 | // Emit the palette, but only for the colors actually used by |
| 3272 | // these cells. |
| 3273 | boolean [] usedColors = new boolean[sixelPaletteSize]; |
| 3274 | for (int imageX = 0; imageX < image.getWidth(); imageX++) { |
| 3275 | for (int imageY = 0; imageY < image.getHeight(); imageY++) { |
| 3276 | usedColors[image.getRGB(imageX, imageY)] = true; |
| 3277 | } |
| 3278 | } |
| 3279 | palette.emitPalette(sb, usedColors); |
| 3280 | } |
| 3281 | |
| 3282 | // Render the entire row of cells. |
| 3283 | for (int currentRow = 0; currentRow < fullHeight; currentRow += 6) { |
| 3284 | int [][] sixels = new int[image.getWidth()][6]; |
| 3285 | |
| 3286 | // See which colors are actually used in this band of sixels. |
| 3287 | for (int imageX = 0; imageX < image.getWidth(); imageX++) { |
| 3288 | for (int imageY = 0; |
| 3289 | (imageY < 6) && (imageY + currentRow < fullHeight); |
| 3290 | imageY++) { |
| 3291 | |
| 3292 | int colorIdx = image.getRGB(imageX, imageY + currentRow); |
| 3293 | assert (colorIdx >= 0); |
| 3294 | assert (colorIdx < sixelPaletteSize); |
| 3295 | |
| 3296 | sixels[imageX][imageY] = colorIdx; |
| 3297 | } |
| 3298 | } |
| 3299 | |
| 3300 | for (int i = 0; i < sixelPaletteSize; i++) { |
| 3301 | boolean isUsed = false; |
| 3302 | for (int imageX = 0; imageX < image.getWidth(); imageX++) { |
| 3303 | for (int j = 0; j < 6; j++) { |
| 3304 | if (sixels[imageX][j] == i) { |
| 3305 | isUsed = true; |
| 3306 | } |
| 3307 | } |
| 3308 | } |
| 3309 | if (isUsed == false) { |
| 3310 | continue; |
| 3311 | } |
| 3312 | |
| 3313 | // Set to the beginning of scan line for the next set of |
| 3314 | // colored pixels, and select the color. |
| 3315 | sb.append(String.format("$#%d", i)); |
| 3316 | |
| 3317 | int oldData = -1; |
| 3318 | int oldDataCount = 0; |
| 3319 | for (int imageX = 0; imageX < image.getWidth(); imageX++) { |
| 3320 | |
| 3321 | // Add up all the pixels that match this color. |
| 3322 | int data = 0; |
| 3323 | for (int j = 0; |
| 3324 | (j < 6) && (currentRow + j < fullHeight); |
| 3325 | j++) { |
| 3326 | |
| 3327 | if (sixels[imageX][j] == i) { |
| 3328 | switch (j) { |
| 3329 | case 0: |
| 3330 | data += 1; |
| 3331 | break; |
| 3332 | case 1: |
| 3333 | data += 2; |
| 3334 | break; |
| 3335 | case 2: |
| 3336 | data += 4; |
| 3337 | break; |
| 3338 | case 3: |
| 3339 | data += 8; |
| 3340 | break; |
| 3341 | case 4: |
| 3342 | data += 16; |
| 3343 | break; |
| 3344 | case 5: |
| 3345 | data += 32; |
| 3346 | break; |
| 3347 | } |
| 3348 | if ((currentRow + j + 1) > rasterHeight) { |
| 3349 | rasterHeight = currentRow + j + 1; |
| 3350 | } |
| 3351 | } |
| 3352 | } |
| 3353 | assert (data >= 0); |
| 3354 | assert (data < 64); |
| 3355 | data += 63; |
| 3356 | |
| 3357 | if (data == oldData) { |
| 3358 | oldDataCount++; |
| 3359 | } else { |
| 3360 | if (oldDataCount == 1) { |
| 3361 | sb.append((char) oldData); |
| 3362 | } else if (oldDataCount > 1) { |
| 3363 | sb.append(String.format("!%d", oldDataCount)); |
| 3364 | sb.append((char) oldData); |
| 3365 | } |
| 3366 | oldDataCount = 1; |
| 3367 | oldData = data; |
| 3368 | } |
| 3369 | |
| 3370 | } // for (int imageX = 0; imageX < image.getWidth(); imageX++) |
| 3371 | |
| 3372 | // Emit the last sequence. |
| 3373 | if (oldDataCount == 1) { |
| 3374 | sb.append((char) oldData); |
| 3375 | } else if (oldDataCount > 1) { |
| 3376 | sb.append(String.format("!%d", oldDataCount)); |
| 3377 | sb.append((char) oldData); |
| 3378 | } |
| 3379 | |
| 3380 | } // for (int i = 0; i < sixelPaletteSize; i++) |
| 3381 | |
| 3382 | // Advance to the next scan line. |
| 3383 | sb.append("-"); |
| 3384 | |
| 3385 | } // for (int currentRow = 0; currentRow < imageHeight; currentRow += 6) |
| 3386 | |
| 3387 | // Kill the very last "-", because it is unnecessary. |
| 3388 | sb.deleteCharAt(sb.length() - 1); |
| 3389 | |
| 3390 | // Add the raster information |
| 3391 | sb.insert(0, String.format("\"1;1;%d;%d", rasterWidth, rasterHeight)); |
| 3392 | |
| 3393 | if (saveInCache) { |
| 3394 | // This row is OK to save into the cache. |
| 3395 | sixelCache.put(cells, sb.toString()); |
| 3396 | } |
| 3397 | |
| 3398 | return (startSixel(x, y) + sb.toString() + endSixel()); |
| 3399 | } |
| 3400 | |
| 3401 | /** |
| 3402 | * Get the sixel support flag. |
| 3403 | * |
| 3404 | * @return true if this terminal is emitting sixel |
| 3405 | */ |
| 3406 | public boolean hasSixel() { |
| 3407 | return sixel; |
| 3408 | } |
| 3409 | |
| 3410 | // ------------------------------------------------------------------------ |
| 3411 | // End sixel output support ----------------------------------------------- |
| 3412 | // ------------------------------------------------------------------------ |
| 3413 | |
| 3414 | // ------------------------------------------------------------------------ |
| 3415 | // iTerm2 image output support -------------------------------------------- |
| 3416 | // ------------------------------------------------------------------------ |
| 3417 | |
| 3418 | /** |
| 3419 | * Create an iTerm2 images string representing a row of several cells |
| 3420 | * containing bitmap data. |
| 3421 | * |
| 3422 | * @param x column coordinate. 0 is the left-most column. |
| 3423 | * @param y row coordinate. 0 is the top-most row. |
| 3424 | * @param cells the cells containing the bitmap data |
| 3425 | * @return the string to emit to an ANSI / ECMA-style terminal |
| 3426 | */ |
| 3427 | private String toIterm2Image(final int x, final int y, |
| 3428 | final ArrayList<Cell> cells) { |
| 3429 | |
| 3430 | StringBuilder sb = new StringBuilder(); |
| 3431 | |
| 3432 | assert (cells != null); |
| 3433 | assert (cells.size() > 0); |
| 3434 | assert (cells.get(0).getImage() != null); |
| 3435 | |
| 3436 | if (iterm2Images == false) { |
| 3437 | sb.append(normal()); |
| 3438 | sb.append(gotoXY(x, y)); |
| 3439 | for (int i = 0; i < cells.size(); i++) { |
| 3440 | sb.append(' '); |
| 3441 | } |
| 3442 | return sb.toString(); |
| 3443 | } |
| 3444 | |
| 3445 | if (iterm2Cache == null) { |
| 3446 | iterm2Cache = new ImageCache(height * 10); |
| 3447 | base64 = java.util.Base64.getEncoder(); |
| 3448 | } |
| 3449 | |
| 3450 | // Save and get rows to/from the cache that do NOT have inverted |
| 3451 | // cells. |
| 3452 | boolean saveInCache = true; |
| 3453 | for (Cell cell: cells) { |
| 3454 | if (cell.isInvertedImage()) { |
| 3455 | saveInCache = false; |
| 3456 | } |
| 3457 | } |
| 3458 | if (saveInCache) { |
| 3459 | String cachedResult = iterm2Cache.get(cells); |
| 3460 | if (cachedResult != null) { |
| 3461 | // System.err.println("CACHE HIT"); |
| 3462 | sb.append(gotoXY(x, y)); |
| 3463 | sb.append(cachedResult); |
| 3464 | return sb.toString(); |
| 3465 | } |
| 3466 | // System.err.println("CACHE MISS"); |
| 3467 | } |
| 3468 | |
| 3469 | int imageWidth = cells.get(0).getImage().getWidth(); |
| 3470 | int imageHeight = cells.get(0).getImage().getHeight(); |
| 3471 | |
| 3472 | // Piece cells.get(x).getImage() pieces together into one larger |
| 3473 | // image for final rendering. |
| 3474 | int totalWidth = 0; |
| 3475 | int fullWidth = cells.size() * getTextWidth(); |
| 3476 | int fullHeight = getTextHeight(); |
| 3477 | for (int i = 0; i < cells.size(); i++) { |
| 3478 | totalWidth += cells.get(i).getImage().getWidth(); |
| 3479 | } |
| 3480 | |
| 3481 | BufferedImage image = new BufferedImage(fullWidth, |
| 3482 | fullHeight, BufferedImage.TYPE_INT_ARGB); |
| 3483 | |
| 3484 | int [] rgbArray; |
| 3485 | for (int i = 0; i < cells.size() - 1; i++) { |
| 3486 | int tileWidth = Math.min(cells.get(i).getImage().getWidth(), |
| 3487 | imageWidth); |
| 3488 | int tileHeight = Math.min(cells.get(i).getImage().getHeight(), |
| 3489 | imageHeight); |
| 3490 | if (false && cells.get(i).isInvertedImage()) { |
| 3491 | // I used to put an all-white cell over the cursor, don't do |
| 3492 | // that anymore. |
| 3493 | rgbArray = new int[imageWidth * imageHeight]; |
| 3494 | for (int j = 0; j < rgbArray.length; j++) { |
| 3495 | rgbArray[j] = 0xFFFFFF; |
| 3496 | } |
| 3497 | } else { |
| 3498 | try { |
| 3499 | rgbArray = cells.get(i).getImage().getRGB(0, 0, |
| 3500 | tileWidth, tileHeight, null, 0, tileWidth); |
| 3501 | } catch (Exception e) { |
| 3502 | throw new RuntimeException("image " + imageWidth + "x" + |
| 3503 | imageHeight + |
| 3504 | "tile " + tileWidth + "x" + |
| 3505 | tileHeight + |
| 3506 | " cells.get(i).getImage() " + |
| 3507 | cells.get(i).getImage() + |
| 3508 | " i " + i + |
| 3509 | " fullWidth " + fullWidth + |
| 3510 | " fullHeight " + fullHeight, e); |
| 3511 | } |
| 3512 | } |
| 3513 | |
| 3514 | /* |
| 3515 | System.err.printf("calling image.setRGB(): %d %d %d %d %d\n", |
| 3516 | i * imageWidth, 0, imageWidth, imageHeight, |
| 3517 | 0, imageWidth); |
| 3518 | System.err.printf(" fullWidth %d fullHeight %d cells.size() %d textWidth %d\n", |
| 3519 | fullWidth, fullHeight, cells.size(), getTextWidth()); |
| 3520 | */ |
| 3521 | |
| 3522 | image.setRGB(i * imageWidth, 0, tileWidth, tileHeight, |
| 3523 | rgbArray, 0, tileWidth); |
| 3524 | if (tileHeight < fullHeight) { |
| 3525 | int backgroundColor = cells.get(i).getBackground().getRGB(); |
| 3526 | for (int imageX = 0; imageX < image.getWidth(); imageX++) { |
| 3527 | for (int imageY = imageHeight; imageY < fullHeight; |
| 3528 | imageY++) { |
| 3529 | |
| 3530 | image.setRGB(imageX, imageY, backgroundColor); |
| 3531 | } |
| 3532 | } |
| 3533 | } |
| 3534 | } |
| 3535 | totalWidth -= ((cells.size() - 1) * imageWidth); |
| 3536 | if (false && cells.get(cells.size() - 1).isInvertedImage()) { |
| 3537 | // I used to put an all-white cell over the cursor, don't do that |
| 3538 | // anymore. |
| 3539 | rgbArray = new int[totalWidth * imageHeight]; |
| 3540 | for (int j = 0; j < rgbArray.length; j++) { |
| 3541 | rgbArray[j] = 0xFFFFFF; |
| 3542 | } |
| 3543 | } else { |
| 3544 | try { |
| 3545 | rgbArray = cells.get(cells.size() - 1).getImage().getRGB(0, 0, |
| 3546 | totalWidth, imageHeight, null, 0, totalWidth); |
| 3547 | } catch (Exception e) { |
| 3548 | throw new RuntimeException("image " + imageWidth + "x" + |
| 3549 | imageHeight + " cells.get(cells.size() - 1).getImage() " + |
| 3550 | cells.get(cells.size() - 1).getImage(), e); |
| 3551 | } |
| 3552 | } |
| 3553 | image.setRGB((cells.size() - 1) * imageWidth, 0, totalWidth, |
| 3554 | imageHeight, rgbArray, 0, totalWidth); |
| 3555 | |
| 3556 | if (totalWidth < getTextWidth()) { |
| 3557 | int backgroundColor = cells.get(cells.size() - 1).getBackground().getRGB(); |
| 3558 | |
| 3559 | for (int imageX = image.getWidth() - totalWidth; |
| 3560 | imageX < image.getWidth(); imageX++) { |
| 3561 | |
| 3562 | for (int imageY = 0; imageY < fullHeight; imageY++) { |
| 3563 | image.setRGB(imageX, imageY, backgroundColor); |
| 3564 | } |
| 3565 | } |
| 3566 | } |
| 3567 | |
| 3568 | /* |
| 3569 | * From https://iterm2.com/documentation-images.html: |
| 3570 | * |
| 3571 | * Protocol |
| 3572 | * |
| 3573 | * iTerm2 extends the xterm protocol with a set of proprietary escape |
| 3574 | * sequences. In general, the pattern is: |
| 3575 | * |
| 3576 | * ESC ] 1337 ; key = value ^G |
| 3577 | * |
| 3578 | * Whitespace is shown here for ease of reading: in practice, no |
| 3579 | * spaces should be used. |
| 3580 | * |
| 3581 | * For file transfer and inline images, the code is: |
| 3582 | * |
| 3583 | * ESC ] 1337 ; File = [optional arguments] : base-64 encoded file contents ^G |
| 3584 | * |
| 3585 | * The optional arguments are formatted as key=value with a semicolon |
| 3586 | * between each key-value pair. They are described below: |
| 3587 | * |
| 3588 | * Key Description of value |
| 3589 | * name base-64 encoded filename. Defaults to "Unnamed file". |
| 3590 | * size File size in bytes. Optional; this is only used by the |
| 3591 | * progress indicator. |
| 3592 | * width Width to render. See notes below. |
| 3593 | * height Height to render. See notes below. |
| 3594 | * preserveAspectRatio If set to 0, then the image's inherent aspect |
| 3595 | * ratio will not be respected; otherwise, it |
| 3596 | * will fill the specified width and height as |
| 3597 | * much as possible without stretching. Defaults |
| 3598 | * to 1. |
| 3599 | * inline If set to 1, the file will be displayed inline. Otherwise, |
| 3600 | * it will be downloaded with no visual representation in the |
| 3601 | * terminal session. Defaults to 0. |
| 3602 | * |
| 3603 | * The width and height are given as a number followed by a unit, or |
| 3604 | * the word "auto". |
| 3605 | * |
| 3606 | * N: N character cells. |
| 3607 | * Npx: N pixels. |
| 3608 | * N%: N percent of the session's width or height. |
| 3609 | * auto: The image's inherent size will be used to determine an |
| 3610 | * appropriate dimension. |
| 3611 | * |
| 3612 | */ |
| 3613 | |
| 3614 | // File contents can be several image formats. We will use PNG. |
| 3615 | ByteArrayOutputStream pngOutputStream = new ByteArrayOutputStream(1024); |
| 3616 | try { |
| 3617 | if (!ImageIO.write(image.getSubimage(0, 0, image.getWidth(), |
| 3618 | Math.min(image.getHeight(), fullHeight)), |
| 3619 | "PNG", pngOutputStream) |
| 3620 | ) { |
| 3621 | // We failed to render image, bail out. |
| 3622 | return ""; |
| 3623 | } |
| 3624 | } catch (IOException e) { |
| 3625 | // We failed to render image, bail out. |
| 3626 | return ""; |
| 3627 | } |
| 3628 | |
| 3629 | sb.append("\033]1337;File="); |
| 3630 | /* |
| 3631 | sb.append(String.format("width=$d;height=1;preserveAspectRatio=1;", |
| 3632 | cells.size())); |
| 3633 | */ |
| 3634 | /* |
| 3635 | sb.append(String.format("width=$dpx;height=%dpx;preserveAspectRatio=1;", |
| 3636 | image.getWidth(), Math.min(image.getHeight(), |
| 3637 | getTextHeight()))); |
| 3638 | */ |
| 3639 | sb.append("inline=1:"); |
| 3640 | sb.append(base64.encodeToString(pngOutputStream.toByteArray())); |
| 3641 | sb.append("\007"); |
| 3642 | |
| 3643 | if (saveInCache) { |
| 3644 | // This row is OK to save into the cache. |
| 3645 | iterm2Cache.put(cells, sb.toString()); |
| 3646 | } |
| 3647 | |
| 3648 | return (gotoXY(x, y) + sb.toString()); |
| 3649 | } |
| 3650 | |
| 3651 | /** |
| 3652 | * Get the iTerm2 images support flag. |
| 3653 | * |
| 3654 | * @return true if this terminal is emitting iTerm2 images |
| 3655 | */ |
| 3656 | public boolean hasIterm2Images() { |
| 3657 | return iterm2Images; |
| 3658 | } |
| 3659 | |
| 3660 | // ------------------------------------------------------------------------ |
| 3661 | // End iTerm2 image output support ---------------------------------------- |
| 3662 | // ------------------------------------------------------------------------ |
| 3663 | |
| 3664 | // ------------------------------------------------------------------------ |
| 3665 | // Jexer image output support --------------------------------------------- |
| 3666 | // ------------------------------------------------------------------------ |
| 3667 | |
| 3668 | /** |
| 3669 | * Create a Jexer images string representing a row of several cells |
| 3670 | * containing bitmap data. |
| 3671 | * |
| 3672 | * @param x column coordinate. 0 is the left-most column. |
| 3673 | * @param y row coordinate. 0 is the top-most row. |
| 3674 | * @param cells the cells containing the bitmap data |
| 3675 | * @return the string to emit to an ANSI / ECMA-style terminal |
| 3676 | */ |
| 3677 | private String toJexerImage(final int x, final int y, |
| 3678 | final ArrayList<Cell> cells) { |
| 3679 | |
| 3680 | StringBuilder sb = new StringBuilder(); |
| 3681 | |
| 3682 | assert (cells != null); |
| 3683 | assert (cells.size() > 0); |
| 3684 | assert (cells.get(0).getImage() != null); |
| 3685 | |
| 3686 | if (jexerImageOption == JexerImageOption.DISABLED) { |
| 3687 | sb.append(normal()); |
| 3688 | sb.append(gotoXY(x, y)); |
| 3689 | for (int i = 0; i < cells.size(); i++) { |
| 3690 | sb.append(' '); |
| 3691 | } |
| 3692 | return sb.toString(); |
| 3693 | } |
| 3694 | |
| 3695 | if (jexerCache == null) { |
| 3696 | jexerCache = new ImageCache(height * 10); |
| 3697 | base64 = java.util.Base64.getEncoder(); |
| 3698 | } |
| 3699 | |
| 3700 | // Save and get rows to/from the cache that do NOT have inverted |
| 3701 | // cells. |
| 3702 | boolean saveInCache = true; |
| 3703 | for (Cell cell: cells) { |
| 3704 | if (cell.isInvertedImage()) { |
| 3705 | saveInCache = false; |
| 3706 | } |
| 3707 | } |
| 3708 | if (saveInCache) { |
| 3709 | String cachedResult = jexerCache.get(cells); |
| 3710 | if (cachedResult != null) { |
| 3711 | // System.err.println("CACHE HIT"); |
| 3712 | sb.append(gotoXY(x, y)); |
| 3713 | sb.append(cachedResult); |
| 3714 | return sb.toString(); |
| 3715 | } |
| 3716 | // System.err.println("CACHE MISS"); |
| 3717 | } |
| 3718 | |
| 3719 | int imageWidth = cells.get(0).getImage().getWidth(); |
| 3720 | int imageHeight = cells.get(0).getImage().getHeight(); |
| 3721 | |
| 3722 | // Piece cells.get(x).getImage() pieces together into one larger |
| 3723 | // image for final rendering. |
| 3724 | int totalWidth = 0; |
| 3725 | int fullWidth = cells.size() * getTextWidth(); |
| 3726 | int fullHeight = getTextHeight(); |
| 3727 | for (int i = 0; i < cells.size(); i++) { |
| 3728 | totalWidth += cells.get(i).getImage().getWidth(); |
| 3729 | } |
| 3730 | |
| 3731 | BufferedImage image = new BufferedImage(fullWidth, |
| 3732 | fullHeight, BufferedImage.TYPE_INT_ARGB); |
| 3733 | |
| 3734 | int [] rgbArray; |
| 3735 | for (int i = 0; i < cells.size() - 1; i++) { |
| 3736 | int tileWidth = Math.min(cells.get(i).getImage().getWidth(), |
| 3737 | imageWidth); |
| 3738 | int tileHeight = Math.min(cells.get(i).getImage().getHeight(), |
| 3739 | imageHeight); |
| 3740 | if (false && cells.get(i).isInvertedImage()) { |
| 3741 | // I used to put an all-white cell over the cursor, don't do |
| 3742 | // that anymore. |
| 3743 | rgbArray = new int[imageWidth * imageHeight]; |
| 3744 | for (int j = 0; j < rgbArray.length; j++) { |
| 3745 | rgbArray[j] = 0xFFFFFF; |
| 3746 | } |
| 3747 | } else { |
| 3748 | try { |
| 3749 | rgbArray = cells.get(i).getImage().getRGB(0, 0, |
| 3750 | tileWidth, tileHeight, null, 0, tileWidth); |
| 3751 | } catch (Exception e) { |
| 3752 | throw new RuntimeException("image " + imageWidth + "x" + |
| 3753 | imageHeight + |
| 3754 | "tile " + tileWidth + "x" + |
| 3755 | tileHeight + |
| 3756 | " cells.get(i).getImage() " + |
| 3757 | cells.get(i).getImage() + |
| 3758 | " i " + i + |
| 3759 | " fullWidth " + fullWidth + |
| 3760 | " fullHeight " + fullHeight, e); |
| 3761 | } |
| 3762 | } |
| 3763 | |
| 3764 | /* |
| 3765 | System.err.printf("calling image.setRGB(): %d %d %d %d %d\n", |
| 3766 | i * imageWidth, 0, imageWidth, imageHeight, |
| 3767 | 0, imageWidth); |
| 3768 | System.err.printf(" fullWidth %d fullHeight %d cells.size() %d textWidth %d\n", |
| 3769 | fullWidth, fullHeight, cells.size(), getTextWidth()); |
| 3770 | */ |
| 3771 | |
| 3772 | image.setRGB(i * imageWidth, 0, tileWidth, tileHeight, |
| 3773 | rgbArray, 0, tileWidth); |
| 3774 | if (tileHeight < fullHeight) { |
| 3775 | int backgroundColor = cells.get(i).getBackground().getRGB(); |
| 3776 | for (int imageX = 0; imageX < image.getWidth(); imageX++) { |
| 3777 | for (int imageY = imageHeight; imageY < fullHeight; |
| 3778 | imageY++) { |
| 3779 | |
| 3780 | image.setRGB(imageX, imageY, backgroundColor); |
| 3781 | } |
| 3782 | } |
| 3783 | } |
| 3784 | } |
| 3785 | totalWidth -= ((cells.size() - 1) * imageWidth); |
| 3786 | if (false && cells.get(cells.size() - 1).isInvertedImage()) { |
| 3787 | // I used to put an all-white cell over the cursor, don't do that |
| 3788 | // anymore. |
| 3789 | rgbArray = new int[totalWidth * imageHeight]; |
| 3790 | for (int j = 0; j < rgbArray.length; j++) { |
| 3791 | rgbArray[j] = 0xFFFFFF; |
| 3792 | } |
| 3793 | } else { |
| 3794 | try { |
| 3795 | rgbArray = cells.get(cells.size() - 1).getImage().getRGB(0, 0, |
| 3796 | totalWidth, imageHeight, null, 0, totalWidth); |
| 3797 | } catch (Exception e) { |
| 3798 | throw new RuntimeException("image " + imageWidth + "x" + |
| 3799 | imageHeight + " cells.get(cells.size() - 1).getImage() " + |
| 3800 | cells.get(cells.size() - 1).getImage(), e); |
| 3801 | } |
| 3802 | } |
| 3803 | image.setRGB((cells.size() - 1) * imageWidth, 0, totalWidth, |
| 3804 | imageHeight, rgbArray, 0, totalWidth); |
| 3805 | |
| 3806 | if (totalWidth < getTextWidth()) { |
| 3807 | int backgroundColor = cells.get(cells.size() - 1).getBackground().getRGB(); |
| 3808 | |
| 3809 | for (int imageX = image.getWidth() - totalWidth; |
| 3810 | imageX < image.getWidth(); imageX++) { |
| 3811 | |
| 3812 | for (int imageY = 0; imageY < fullHeight; imageY++) { |
| 3813 | image.setRGB(imageX, imageY, backgroundColor); |
| 3814 | } |
| 3815 | } |
| 3816 | } |
| 3817 | |
| 3818 | if (jexerImageOption == JexerImageOption.PNG) { |
| 3819 | // Encode as PNG |
| 3820 | ByteArrayOutputStream pngOutputStream = new ByteArrayOutputStream(1024); |
| 3821 | try { |
| 3822 | if (!ImageIO.write(image.getSubimage(0, 0, image.getWidth(), |
| 3823 | Math.min(image.getHeight(), fullHeight)), |
| 3824 | "PNG", pngOutputStream) |
| 3825 | ) { |
| 3826 | // We failed to render image, bail out. |
| 3827 | return ""; |
| 3828 | } |
| 3829 | } catch (IOException e) { |
| 3830 | // We failed to render image, bail out. |
| 3831 | return ""; |
| 3832 | } |
| 3833 | |
| 3834 | sb.append("\033]444;1;0;"); |
| 3835 | sb.append(base64.encodeToString(pngOutputStream.toByteArray())); |
| 3836 | sb.append("\007"); |
| 3837 | |
| 3838 | } else if (jexerImageOption == JexerImageOption.JPG) { |
| 3839 | |
| 3840 | // Encode as JPG |
| 3841 | ByteArrayOutputStream jpgOutputStream = new ByteArrayOutputStream(1024); |
| 3842 | |
| 3843 | // Convert from ARGB to RGB, otherwise the JPG encode will fail. |
| 3844 | BufferedImage jpgImage = new BufferedImage(image.getWidth(), |
| 3845 | image.getHeight(), BufferedImage.TYPE_INT_RGB); |
| 3846 | int [] pixels = new int[image.getWidth() * image.getHeight()]; |
| 3847 | image.getRGB(0, 0, image.getWidth(), image.getHeight(), pixels, |
| 3848 | 0, image.getWidth()); |
| 3849 | jpgImage.setRGB(0, 0, image.getWidth(), image.getHeight(), pixels, |
| 3850 | 0, image.getWidth()); |
| 3851 | |
| 3852 | try { |
| 3853 | if (!ImageIO.write(jpgImage.getSubimage(0, 0, |
| 3854 | jpgImage.getWidth(), |
| 3855 | Math.min(jpgImage.getHeight(), fullHeight)), |
| 3856 | "JPG", jpgOutputStream) |
| 3857 | ) { |
| 3858 | // We failed to render image, bail out. |
| 3859 | return ""; |
| 3860 | } |
| 3861 | } catch (IOException e) { |
| 3862 | // We failed to render image, bail out. |
| 3863 | return ""; |
| 3864 | } |
| 3865 | |
| 3866 | sb.append("\033]444;2;0;"); |
| 3867 | sb.append(base64.encodeToString(jpgOutputStream.toByteArray())); |
| 3868 | sb.append("\007"); |
| 3869 | |
| 3870 | } else if (jexerImageOption == JexerImageOption.RGB) { |
| 3871 | |
| 3872 | // RGB |
| 3873 | sb.append(String.format("\033]444;0;%d;%d;0;", image.getWidth(), |
| 3874 | Math.min(image.getHeight(), fullHeight))); |
| 3875 | |
| 3876 | byte [] bytes = new byte[image.getWidth() * image.getHeight() * 3]; |
| 3877 | int stride = image.getWidth(); |
| 3878 | for (int px = 0; px < stride; px++) { |
| 3879 | for (int py = 0; py < image.getHeight(); py++) { |
| 3880 | int rgb = image.getRGB(px, py); |
| 3881 | bytes[(py * stride * 3) + (px * 3)] = (byte) ((rgb >>> 16) & 0xFF); |
| 3882 | bytes[(py * stride * 3) + (px * 3) + 1] = (byte) ((rgb >>> 8) & 0xFF); |
| 3883 | bytes[(py * stride * 3) + (px * 3) + 2] = (byte) ( rgb & 0xFF); |
| 3884 | } |
| 3885 | } |
| 3886 | sb.append(base64.encodeToString(bytes)); |
| 3887 | sb.append("\007"); |
| 3888 | } |
| 3889 | |
| 3890 | if (saveInCache) { |
| 3891 | // This row is OK to save into the cache. |
| 3892 | jexerCache.put(cells, sb.toString()); |
| 3893 | } |
| 3894 | |
| 3895 | return (gotoXY(x, y) + sb.toString()); |
| 3896 | } |
| 3897 | |
| 3898 | /** |
| 3899 | * Get the Jexer images support flag. |
| 3900 | * |
| 3901 | * @return true if this terminal is emitting Jexer images |
| 3902 | */ |
| 3903 | public boolean hasJexerImages() { |
| 3904 | return (jexerImageOption != JexerImageOption.DISABLED); |
| 3905 | } |
| 3906 | |
| 3907 | // ------------------------------------------------------------------------ |
| 3908 | // End Jexer image output support ----------------------------------------- |
| 3909 | // ------------------------------------------------------------------------ |
| 3910 | |
| 3911 | /** |
| 3912 | * Setup system colors to match DOS color palette. |
| 3913 | */ |
| 3914 | private void setDOSColors() { |
| 3915 | MYBLACK = new java.awt.Color(0x00, 0x00, 0x00); |
| 3916 | MYRED = new java.awt.Color(0xa8, 0x00, 0x00); |
| 3917 | MYGREEN = new java.awt.Color(0x00, 0xa8, 0x00); |
| 3918 | MYYELLOW = new java.awt.Color(0xa8, 0x54, 0x00); |
| 3919 | MYBLUE = new java.awt.Color(0x00, 0x00, 0xa8); |
| 3920 | MYMAGENTA = new java.awt.Color(0xa8, 0x00, 0xa8); |
| 3921 | MYCYAN = new java.awt.Color(0x00, 0xa8, 0xa8); |
| 3922 | MYWHITE = new java.awt.Color(0xa8, 0xa8, 0xa8); |
| 3923 | MYBOLD_BLACK = new java.awt.Color(0x54, 0x54, 0x54); |
| 3924 | MYBOLD_RED = new java.awt.Color(0xfc, 0x54, 0x54); |
| 3925 | MYBOLD_GREEN = new java.awt.Color(0x54, 0xfc, 0x54); |
| 3926 | MYBOLD_YELLOW = new java.awt.Color(0xfc, 0xfc, 0x54); |
| 3927 | MYBOLD_BLUE = new java.awt.Color(0x54, 0x54, 0xfc); |
| 3928 | MYBOLD_MAGENTA = new java.awt.Color(0xfc, 0x54, 0xfc); |
| 3929 | MYBOLD_CYAN = new java.awt.Color(0x54, 0xfc, 0xfc); |
| 3930 | MYBOLD_WHITE = new java.awt.Color(0xfc, 0xfc, 0xfc); |
| 3931 | } |
| 3932 | |
| 3933 | /** |
| 3934 | * Setup ECMA48 colors to match those provided in system properties. |
| 3935 | */ |
| 3936 | private void setCustomSystemColors() { |
| 3937 | setDOSColors(); |
| 3938 | |
| 3939 | MYBLACK = getCustomColor("jexer.ECMA48.color0", MYBLACK); |
| 3940 | MYRED = getCustomColor("jexer.ECMA48.color1", MYRED); |
| 3941 | MYGREEN = getCustomColor("jexer.ECMA48.color2", MYGREEN); |
| 3942 | MYYELLOW = getCustomColor("jexer.ECMA48.color3", MYYELLOW); |
| 3943 | MYBLUE = getCustomColor("jexer.ECMA48.color4", MYBLUE); |
| 3944 | MYMAGENTA = getCustomColor("jexer.ECMA48.color5", MYMAGENTA); |
| 3945 | MYCYAN = getCustomColor("jexer.ECMA48.color6", MYCYAN); |
| 3946 | MYWHITE = getCustomColor("jexer.ECMA48.color7", MYWHITE); |
| 3947 | MYBOLD_BLACK = getCustomColor("jexer.ECMA48.color8", MYBOLD_BLACK); |
| 3948 | MYBOLD_RED = getCustomColor("jexer.ECMA48.color9", MYBOLD_RED); |
| 3949 | MYBOLD_GREEN = getCustomColor("jexer.ECMA48.color10", MYBOLD_GREEN); |
| 3950 | MYBOLD_YELLOW = getCustomColor("jexer.ECMA48.color11", MYBOLD_YELLOW); |
| 3951 | MYBOLD_BLUE = getCustomColor("jexer.ECMA48.color12", MYBOLD_BLUE); |
| 3952 | MYBOLD_MAGENTA = getCustomColor("jexer.ECMA48.color13", MYBOLD_MAGENTA); |
| 3953 | MYBOLD_CYAN = getCustomColor("jexer.ECMA48.color14", MYBOLD_CYAN); |
| 3954 | MYBOLD_WHITE = getCustomColor("jexer.ECMA48.color15", MYBOLD_WHITE); |
| 3955 | } |
| 3956 | |
| 3957 | /** |
| 3958 | * Setup one system color to match the RGB value provided in system |
| 3959 | * properties. |
| 3960 | * |
| 3961 | * @param key the system property key |
| 3962 | * @param defaultColor the default color to return if key is not set, or |
| 3963 | * incorrect |
| 3964 | * @return a color from the RGB string, or defaultColor |
| 3965 | */ |
| 3966 | private java.awt.Color getCustomColor(final String key, |
| 3967 | final java.awt.Color defaultColor) { |
| 3968 | |
| 3969 | String rgb = System.getProperty(key); |
| 3970 | if (rgb == null) { |
| 3971 | return defaultColor; |
| 3972 | } |
| 3973 | if (rgb.startsWith("#")) { |
| 3974 | rgb = rgb.substring(1); |
| 3975 | } |
| 3976 | int rgbInt = 0; |
| 3977 | try { |
| 3978 | rgbInt = Integer.parseInt(rgb, 16); |
| 3979 | } catch (NumberFormatException e) { |
| 3980 | return defaultColor; |
| 3981 | } |
| 3982 | java.awt.Color color = new java.awt.Color((rgbInt & 0xFF0000) >>> 16, |
| 3983 | (rgbInt & 0x00FF00) >>> 8, |
| 3984 | (rgbInt & 0x0000FF)); |
| 3985 | |
| 3986 | return color; |
| 3987 | } |
| 3988 | |
| 3989 | /** |
| 3990 | * Create a T.416 RGB parameter sequence for a custom system color. |
| 3991 | * |
| 3992 | * @param color one of the MYBLACK, MYBOLD_BLUE, etc. colors |
| 3993 | * @return the color portion of the string to emit to an ANSI / |
| 3994 | * ECMA-style terminal |
| 3995 | */ |
| 3996 | private String systemColorRGB(final java.awt.Color color) { |
| 3997 | return String.format("%d;%d;%d", color.getRed(), color.getGreen(), |
| 3998 | color.getBlue()); |
| 3999 | } |
| 4000 | |
| 4001 | /** |
| 4002 | * Create a SGR parameter sequence for a single color change. |
| 4003 | * |
| 4004 | * @param bold if true, set bold |
| 4005 | * @param color one of the Color.WHITE, Color.BLUE, etc. constants |
| 4006 | * @param foreground if true, this is a foreground color |
| 4007 | * @return the string to emit to an ANSI / ECMA-style terminal, |
| 4008 | * e.g. "\033[42m" |
| 4009 | */ |
| 4010 | private String color(final boolean bold, final Color color, |
| 4011 | final boolean foreground) { |
| 4012 | return color(color, foreground, true) + |
| 4013 | rgbColor(bold, color, foreground); |
| 4014 | } |
| 4015 | |
| 4016 | /** |
| 4017 | * Create a T.416 RGB parameter sequence for a single color change. |
| 4018 | * |
| 4019 | * @param colorRGB a 24-bit RGB value for foreground color |
| 4020 | * @param foreground if true, this is a foreground color |
| 4021 | * @return the string to emit to an ANSI / ECMA-style terminal, |
| 4022 | * e.g. "\033[42m" |
| 4023 | */ |
| 4024 | private String colorRGB(final int colorRGB, final boolean foreground) { |
| 4025 | |
| 4026 | int colorRed = (colorRGB >>> 16) & 0xFF; |
| 4027 | int colorGreen = (colorRGB >>> 8) & 0xFF; |
| 4028 | int colorBlue = colorRGB & 0xFF; |
| 4029 | |
| 4030 | StringBuilder sb = new StringBuilder(); |
| 4031 | if (foreground) { |
| 4032 | sb.append("\033[38;2;"); |
| 4033 | } else { |
| 4034 | sb.append("\033[48;2;"); |
| 4035 | } |
| 4036 | sb.append(String.format("%d;%d;%dm", colorRed, colorGreen, colorBlue)); |
| 4037 | return sb.toString(); |
| 4038 | } |
| 4039 | |
| 4040 | /** |
| 4041 | * Create a T.416 RGB parameter sequence for both foreground and |
| 4042 | * background color change. |
| 4043 | * |
| 4044 | * @param foreColorRGB a 24-bit RGB value for foreground color |
| 4045 | * @param backColorRGB a 24-bit RGB value for foreground color |
| 4046 | * @return the string to emit to an ANSI / ECMA-style terminal, |
| 4047 | * e.g. "\033[42m" |
| 4048 | */ |
| 4049 | private String colorRGB(final int foreColorRGB, final int backColorRGB) { |
| 4050 | int foreColorRed = (foreColorRGB >>> 16) & 0xFF; |
| 4051 | int foreColorGreen = (foreColorRGB >>> 8) & 0xFF; |
| 4052 | int foreColorBlue = foreColorRGB & 0xFF; |
| 4053 | int backColorRed = (backColorRGB >>> 16) & 0xFF; |
| 4054 | int backColorGreen = (backColorRGB >>> 8) & 0xFF; |
| 4055 | int backColorBlue = backColorRGB & 0xFF; |
| 4056 | |
| 4057 | StringBuilder sb = new StringBuilder(); |
| 4058 | sb.append(String.format("\033[38;2;%d;%d;%dm", |
| 4059 | foreColorRed, foreColorGreen, foreColorBlue)); |
| 4060 | sb.append(String.format("\033[48;2;%d;%d;%dm", |
| 4061 | backColorRed, backColorGreen, backColorBlue)); |
| 4062 | return sb.toString(); |
| 4063 | } |
| 4064 | |
| 4065 | /** |
| 4066 | * Create a T.416 RGB parameter sequence for a single color change. |
| 4067 | * |
| 4068 | * @param bold if true, set bold |
| 4069 | * @param color one of the Color.WHITE, Color.BLUE, etc. constants |
| 4070 | * @param foreground if true, this is a foreground color |
| 4071 | * @return the string to emit to an xterm terminal with RGB support, |
| 4072 | * e.g. "\033[38;2;RR;GG;BBm" |
| 4073 | */ |
| 4074 | private String rgbColor(final boolean bold, final Color color, |
| 4075 | final boolean foreground) { |
| 4076 | if (doRgbColor == false) { |
| 4077 | return ""; |
| 4078 | } |
| 4079 | StringBuilder sb = new StringBuilder("\033["); |
| 4080 | if (bold) { |
| 4081 | // Bold implies foreground only |
| 4082 | sb.append("38;2;"); |
| 4083 | if (color.equals(Color.BLACK)) { |
| 4084 | sb.append(systemColorRGB(MYBOLD_BLACK)); |
| 4085 | } else if (color.equals(Color.RED)) { |
| 4086 | sb.append(systemColorRGB(MYBOLD_RED)); |
| 4087 | } else if (color.equals(Color.GREEN)) { |
| 4088 | sb.append(systemColorRGB(MYBOLD_GREEN)); |
| 4089 | } else if (color.equals(Color.YELLOW)) { |
| 4090 | sb.append(systemColorRGB(MYBOLD_YELLOW)); |
| 4091 | } else if (color.equals(Color.BLUE)) { |
| 4092 | sb.append(systemColorRGB(MYBOLD_BLUE)); |
| 4093 | } else if (color.equals(Color.MAGENTA)) { |
| 4094 | sb.append(systemColorRGB(MYBOLD_MAGENTA)); |
| 4095 | } else if (color.equals(Color.CYAN)) { |
| 4096 | sb.append(systemColorRGB(MYBOLD_CYAN)); |
| 4097 | } else if (color.equals(Color.WHITE)) { |
| 4098 | sb.append(systemColorRGB(MYBOLD_WHITE)); |
| 4099 | } |
| 4100 | } else { |
| 4101 | if (foreground) { |
| 4102 | sb.append("38;2;"); |
| 4103 | } else { |
| 4104 | sb.append("48;2;"); |
| 4105 | } |
| 4106 | if (color.equals(Color.BLACK)) { |
| 4107 | sb.append(systemColorRGB(MYBLACK)); |
| 4108 | } else if (color.equals(Color.RED)) { |
| 4109 | sb.append(systemColorRGB(MYRED)); |
| 4110 | } else if (color.equals(Color.GREEN)) { |
| 4111 | sb.append(systemColorRGB(MYGREEN)); |
| 4112 | } else if (color.equals(Color.YELLOW)) { |
| 4113 | sb.append(systemColorRGB(MYYELLOW)); |
| 4114 | } else if (color.equals(Color.BLUE)) { |
| 4115 | sb.append(systemColorRGB(MYBLUE)); |
| 4116 | } else if (color.equals(Color.MAGENTA)) { |
| 4117 | sb.append(systemColorRGB(MYMAGENTA)); |
| 4118 | } else if (color.equals(Color.CYAN)) { |
| 4119 | sb.append(systemColorRGB(MYCYAN)); |
| 4120 | } else if (color.equals(Color.WHITE)) { |
| 4121 | sb.append(systemColorRGB(MYWHITE)); |
| 4122 | } |
| 4123 | } |
| 4124 | sb.append("m"); |
| 4125 | return sb.toString(); |
| 4126 | } |
| 4127 | |
| 4128 | /** |
| 4129 | * Create a T.416 RGB parameter sequence for both foreground and |
| 4130 | * background color change. |
| 4131 | * |
| 4132 | * @param bold if true, set bold |
| 4133 | * @param foreColor one of the Color.WHITE, Color.BLUE, etc. constants |
| 4134 | * @param backColor one of the Color.WHITE, Color.BLUE, etc. constants |
| 4135 | * @return the string to emit to an xterm terminal with RGB support, |
| 4136 | * e.g. "\033[38;2;RR;GG;BB;48;2;RR;GG;BBm" |
| 4137 | */ |
| 4138 | private String rgbColor(final boolean bold, final Color foreColor, |
| 4139 | final Color backColor) { |
| 4140 | if (doRgbColor == false) { |
| 4141 | return ""; |
| 4142 | } |
| 4143 | |
| 4144 | return rgbColor(bold, foreColor, true) + |
| 4145 | rgbColor(false, backColor, false); |
| 4146 | } |
| 4147 | |
| 4148 | /** |
| 4149 | * Create a SGR parameter sequence for a single color change. |
| 4150 | * |
| 4151 | * @param color one of the Color.WHITE, Color.BLUE, etc. constants |
| 4152 | * @param foreground if true, this is a foreground color |
| 4153 | * @param header if true, make the full header, otherwise just emit the |
| 4154 | * color parameter e.g. "42;" |
| 4155 | * @return the string to emit to an ANSI / ECMA-style terminal, |
| 4156 | * e.g. "\033[42m" |
| 4157 | */ |
| 4158 | private String color(final Color color, final boolean foreground, |
| 4159 | final boolean header) { |
| 4160 | |
| 4161 | int ecmaColor = color.getValue(); |
| 4162 | |
| 4163 | // Convert Color.* values to SGR numerics |
| 4164 | if (foreground) { |
| 4165 | ecmaColor += 30; |
| 4166 | } else { |
| 4167 | ecmaColor += 40; |
| 4168 | } |
| 4169 | |
| 4170 | if (header) { |
| 4171 | return String.format("\033[%dm", ecmaColor); |
| 4172 | } else { |
| 4173 | return String.format("%d;", ecmaColor); |
| 4174 | } |
| 4175 | } |
| 4176 | |
| 4177 | /** |
| 4178 | * Create a SGR parameter sequence for both foreground and background |
| 4179 | * color change. |
| 4180 | * |
| 4181 | * @param bold if true, set bold |
| 4182 | * @param foreColor one of the Color.WHITE, Color.BLUE, etc. constants |
| 4183 | * @param backColor one of the Color.WHITE, Color.BLUE, etc. constants |
| 4184 | * @return the string to emit to an ANSI / ECMA-style terminal, |
| 4185 | * e.g. "\033[31;42m" |
| 4186 | */ |
| 4187 | private String color(final boolean bold, final Color foreColor, |
| 4188 | final Color backColor) { |
| 4189 | return color(foreColor, backColor, true) + |
| 4190 | rgbColor(bold, foreColor, backColor); |
| 4191 | } |
| 4192 | |
| 4193 | /** |
| 4194 | * Create a SGR parameter sequence for both foreground and |
| 4195 | * background color change. |
| 4196 | * |
| 4197 | * @param foreColor one of the Color.WHITE, Color.BLUE, etc. constants |
| 4198 | * @param backColor one of the Color.WHITE, Color.BLUE, etc. constants |
| 4199 | * @param header if true, make the full header, otherwise just emit the |
| 4200 | * color parameter e.g. "31;42;" |
| 4201 | * @return the string to emit to an ANSI / ECMA-style terminal, |
| 4202 | * e.g. "\033[31;42m" |
| 4203 | */ |
| 4204 | private String color(final Color foreColor, final Color backColor, |
| 4205 | final boolean header) { |
| 4206 | |
| 4207 | int ecmaForeColor = foreColor.getValue(); |
| 4208 | int ecmaBackColor = backColor.getValue(); |
| 4209 | |
| 4210 | // Convert Color.* values to SGR numerics |
| 4211 | ecmaBackColor += 40; |
| 4212 | ecmaForeColor += 30; |
| 4213 | |
| 4214 | if (header) { |
| 4215 | return String.format("\033[%d;%dm", ecmaForeColor, ecmaBackColor); |
| 4216 | } else { |
| 4217 | return String.format("%d;%d;", ecmaForeColor, ecmaBackColor); |
| 4218 | } |
| 4219 | } |
| 4220 | |
| 4221 | /** |
| 4222 | * Create a SGR parameter sequence for foreground, background, and |
| 4223 | * several attributes. This sequence first resets all attributes to |
| 4224 | * default, then sets attributes as per the parameters. |
| 4225 | * |
| 4226 | * @param foreColor one of the Color.WHITE, Color.BLUE, etc. constants |
| 4227 | * @param backColor one of the Color.WHITE, Color.BLUE, etc. constants |
| 4228 | * @param bold if true, set bold |
| 4229 | * @param reverse if true, set reverse |
| 4230 | * @param blink if true, set blink |
| 4231 | * @param underline if true, set underline |
| 4232 | * @return the string to emit to an ANSI / ECMA-style terminal, |
| 4233 | * e.g. "\033[0;1;31;42m" |
| 4234 | */ |
| 4235 | private String color(final Color foreColor, final Color backColor, |
| 4236 | final boolean bold, final boolean reverse, final boolean blink, |
| 4237 | final boolean underline) { |
| 4238 | |
| 4239 | int ecmaForeColor = foreColor.getValue(); |
| 4240 | int ecmaBackColor = backColor.getValue(); |
| 4241 | |
| 4242 | // Convert Color.* values to SGR numerics |
| 4243 | ecmaBackColor += 40; |
| 4244 | ecmaForeColor += 30; |
| 4245 | |
| 4246 | StringBuilder sb = new StringBuilder(); |
| 4247 | if ( bold && reverse && blink && !underline ) { |
| 4248 | sb.append("\033[0;1;7;5;"); |
| 4249 | } else if ( bold && reverse && !blink && !underline ) { |
| 4250 | sb.append("\033[0;1;7;"); |
| 4251 | } else if ( !bold && reverse && blink && !underline ) { |
| 4252 | sb.append("\033[0;7;5;"); |
| 4253 | } else if ( bold && !reverse && blink && !underline ) { |
| 4254 | sb.append("\033[0;1;5;"); |
| 4255 | } else if ( bold && !reverse && !blink && !underline ) { |
| 4256 | sb.append("\033[0;1;"); |
| 4257 | } else if ( !bold && reverse && !blink && !underline ) { |
| 4258 | sb.append("\033[0;7;"); |
| 4259 | } else if ( !bold && !reverse && blink && !underline) { |
| 4260 | sb.append("\033[0;5;"); |
| 4261 | } else if ( bold && reverse && blink && underline ) { |
| 4262 | sb.append("\033[0;1;7;5;4;"); |
| 4263 | } else if ( bold && reverse && !blink && underline ) { |
| 4264 | sb.append("\033[0;1;7;4;"); |
| 4265 | } else if ( !bold && reverse && blink && underline ) { |
| 4266 | sb.append("\033[0;7;5;4;"); |
| 4267 | } else if ( bold && !reverse && blink && underline ) { |
| 4268 | sb.append("\033[0;1;5;4;"); |
| 4269 | } else if ( bold && !reverse && !blink && underline ) { |
| 4270 | sb.append("\033[0;1;4;"); |
| 4271 | } else if ( !bold && reverse && !blink && underline ) { |
| 4272 | sb.append("\033[0;7;4;"); |
| 4273 | } else if ( !bold && !reverse && blink && underline) { |
| 4274 | sb.append("\033[0;5;4;"); |
| 4275 | } else if ( !bold && !reverse && !blink && underline) { |
| 4276 | sb.append("\033[0;4;"); |
| 4277 | } else { |
| 4278 | assert (!bold && !reverse && !blink && !underline); |
| 4279 | sb.append("\033[0;"); |
| 4280 | } |
| 4281 | sb.append(String.format("%d;%dm", ecmaForeColor, ecmaBackColor)); |
| 4282 | sb.append(rgbColor(bold, foreColor, backColor)); |
| 4283 | return sb.toString(); |
| 4284 | } |
| 4285 | |
| 4286 | /** |
| 4287 | * Create a SGR parameter sequence for foreground, background, and |
| 4288 | * several attributes. This sequence first resets all attributes to |
| 4289 | * default, then sets attributes as per the parameters. |
| 4290 | * |
| 4291 | * @param foreColorRGB a 24-bit RGB value for foreground color |
| 4292 | * @param backColorRGB a 24-bit RGB value for foreground color |
| 4293 | * @param bold if true, set bold |
| 4294 | * @param reverse if true, set reverse |
| 4295 | * @param blink if true, set blink |
| 4296 | * @param underline if true, set underline |
| 4297 | * @return the string to emit to an ANSI / ECMA-style terminal, |
| 4298 | * e.g. "\033[0;1;31;42m" |
| 4299 | */ |
| 4300 | private String colorRGB(final int foreColorRGB, final int backColorRGB, |
| 4301 | final boolean bold, final boolean reverse, final boolean blink, |
| 4302 | final boolean underline) { |
| 4303 | |
| 4304 | int foreColorRed = (foreColorRGB >>> 16) & 0xFF; |
| 4305 | int foreColorGreen = (foreColorRGB >>> 8) & 0xFF; |
| 4306 | int foreColorBlue = foreColorRGB & 0xFF; |
| 4307 | int backColorRed = (backColorRGB >>> 16) & 0xFF; |
| 4308 | int backColorGreen = (backColorRGB >>> 8) & 0xFF; |
| 4309 | int backColorBlue = backColorRGB & 0xFF; |
| 4310 | |
| 4311 | StringBuilder sb = new StringBuilder(); |
| 4312 | if ( bold && reverse && blink && !underline ) { |
| 4313 | sb.append("\033[0;1;7;5;"); |
| 4314 | } else if ( bold && reverse && !blink && !underline ) { |
| 4315 | sb.append("\033[0;1;7;"); |
| 4316 | } else if ( !bold && reverse && blink && !underline ) { |
| 4317 | sb.append("\033[0;7;5;"); |
| 4318 | } else if ( bold && !reverse && blink && !underline ) { |
| 4319 | sb.append("\033[0;1;5;"); |
| 4320 | } else if ( bold && !reverse && !blink && !underline ) { |
| 4321 | sb.append("\033[0;1;"); |
| 4322 | } else if ( !bold && reverse && !blink && !underline ) { |
| 4323 | sb.append("\033[0;7;"); |
| 4324 | } else if ( !bold && !reverse && blink && !underline) { |
| 4325 | sb.append("\033[0;5;"); |
| 4326 | } else if ( bold && reverse && blink && underline ) { |
| 4327 | sb.append("\033[0;1;7;5;4;"); |
| 4328 | } else if ( bold && reverse && !blink && underline ) { |
| 4329 | sb.append("\033[0;1;7;4;"); |
| 4330 | } else if ( !bold && reverse && blink && underline ) { |
| 4331 | sb.append("\033[0;7;5;4;"); |
| 4332 | } else if ( bold && !reverse && blink && underline ) { |
| 4333 | sb.append("\033[0;1;5;4;"); |
| 4334 | } else if ( bold && !reverse && !blink && underline ) { |
| 4335 | sb.append("\033[0;1;4;"); |
| 4336 | } else if ( !bold && reverse && !blink && underline ) { |
| 4337 | sb.append("\033[0;7;4;"); |
| 4338 | } else if ( !bold && !reverse && blink && underline) { |
| 4339 | sb.append("\033[0;5;4;"); |
| 4340 | } else if ( !bold && !reverse && !blink && underline) { |
| 4341 | sb.append("\033[0;4;"); |
| 4342 | } else { |
| 4343 | assert (!bold && !reverse && !blink && !underline); |
| 4344 | sb.append("\033[0;"); |
| 4345 | } |
| 4346 | |
| 4347 | sb.append("m\033[38;2;"); |
| 4348 | sb.append(String.format("%d;%d;%d", foreColorRed, foreColorGreen, |
| 4349 | foreColorBlue)); |
| 4350 | sb.append("m\033[48;2;"); |
| 4351 | sb.append(String.format("%d;%d;%d", backColorRed, backColorGreen, |
| 4352 | backColorBlue)); |
| 4353 | sb.append("m"); |
| 4354 | return sb.toString(); |
| 4355 | } |
| 4356 | |
| 4357 | /** |
| 4358 | * Create a SGR parameter sequence to reset to VT100 defaults. |
| 4359 | * |
| 4360 | * @return the string to emit to an ANSI / ECMA-style terminal, |
| 4361 | * e.g. "\033[0m" |
| 4362 | */ |
| 4363 | private String normal() { |
| 4364 | return normal(true) + rgbColor(false, Color.WHITE, Color.BLACK); |
| 4365 | } |
| 4366 | |
| 4367 | /** |
| 4368 | * Create a SGR parameter sequence to reset to ECMA-48 default |
| 4369 | * foreground/background. |
| 4370 | * |
| 4371 | * @return the string to emit to an ANSI / ECMA-style terminal, |
| 4372 | * e.g. "\033[0m" |
| 4373 | */ |
| 4374 | private String defaultColor() { |
| 4375 | /* |
| 4376 | * VT100 normal. |
| 4377 | * Normal (neither bold nor faint). |
| 4378 | * Not italicized. |
| 4379 | * Not underlined. |
| 4380 | * Steady (not blinking). |
| 4381 | * Positive (not inverse). |
| 4382 | * Visible (not hidden). |
| 4383 | * Not crossed-out. |
| 4384 | * Default foreground color. |
| 4385 | * Default background color. |
| 4386 | */ |
| 4387 | return "\033[0;22;23;24;25;27;28;29;39;49m"; |
| 4388 | } |
| 4389 | |
| 4390 | /** |
| 4391 | * Create a SGR parameter sequence to reset to defaults. |
| 4392 | * |
| 4393 | * @param header if true, make the full header, otherwise just emit the |
| 4394 | * bare parameter e.g. "0;" |
| 4395 | * @return the string to emit to an ANSI / ECMA-style terminal, |
| 4396 | * e.g. "\033[0m" |
| 4397 | */ |
| 4398 | private String normal(final boolean header) { |
| 4399 | if (header) { |
| 4400 | return "\033[0;37;40m"; |
| 4401 | } |
| 4402 | return "0;37;40"; |
| 4403 | } |
| 4404 | |
| 4405 | /** |
| 4406 | * Create a SGR parameter sequence for enabling the visible cursor. |
| 4407 | * |
| 4408 | * @param on if true, turn on cursor |
| 4409 | * @return the string to emit to an ANSI / ECMA-style terminal |
| 4410 | */ |
| 4411 | private String cursor(final boolean on) { |
| 4412 | if (on && !cursorOn) { |
| 4413 | cursorOn = true; |
| 4414 | return "\033[?25h"; |
| 4415 | } |
| 4416 | if (!on && cursorOn) { |
| 4417 | cursorOn = false; |
| 4418 | return "\033[?25l"; |
| 4419 | } |
| 4420 | return ""; |
| 4421 | } |
| 4422 | |
| 4423 | /** |
| 4424 | * Clear the entire screen. Because some terminals use back-color-erase, |
| 4425 | * set the color to white-on-black beforehand. |
| 4426 | * |
| 4427 | * @return the string to emit to an ANSI / ECMA-style terminal |
| 4428 | */ |
| 4429 | private String clearAll() { |
| 4430 | return "\033[0;37;40m\033[2J"; |
| 4431 | } |
| 4432 | |
| 4433 | /** |
| 4434 | * Clear the line from the cursor (inclusive) to the end of the screen. |
| 4435 | * Because some terminals use back-color-erase, set the color to |
| 4436 | * white-on-black beforehand. |
| 4437 | * |
| 4438 | * @return the string to emit to an ANSI / ECMA-style terminal |
| 4439 | */ |
| 4440 | private String clearRemainingLine() { |
| 4441 | return "\033[0;37;40m\033[K"; |
| 4442 | } |
| 4443 | |
| 4444 | /** |
| 4445 | * Move the cursor to (x, y). |
| 4446 | * |
| 4447 | * @param x column coordinate. 0 is the left-most column. |
| 4448 | * @param y row coordinate. 0 is the top-most row. |
| 4449 | * @return the string to emit to an ANSI / ECMA-style terminal |
| 4450 | */ |
| 4451 | private String gotoXY(final int x, final int y) { |
| 4452 | return String.format("\033[%d;%dH", y + 1, x + 1); |
| 4453 | } |
| 4454 | |
| 4455 | /** |
| 4456 | * Tell (u)xterm that we want to receive mouse events based on "Any event |
| 4457 | * tracking", UTF-8 coordinates, and then SGR coordinates. Ideally we |
| 4458 | * will end up with SGR coordinates with UTF-8 coordinates as a fallback. |
| 4459 | * See |
| 4460 | * http://invisible-island.net/xterm/ctlseqs/ctlseqs.html#Mouse%20Tracking |
| 4461 | * |
| 4462 | * Note that this also sets the alternate/primary screen buffer. |
| 4463 | * |
| 4464 | * Finally, also emit a Privacy Message sequence that Jexer recognizes to |
| 4465 | * mean "hide the mouse pointer." We have to use our own sequence to do |
| 4466 | * this because there is no standard in xterm for unilaterally hiding the |
| 4467 | * pointer all the time (regardless of typing). |
| 4468 | * |
| 4469 | * @param on If true, enable mouse report and use the alternate screen |
| 4470 | * buffer. If false disable mouse reporting and use the primary screen |
| 4471 | * buffer. |
| 4472 | * @return the string to emit to xterm |
| 4473 | */ |
| 4474 | private String mouse(final boolean on) { |
| 4475 | if (on) { |
| 4476 | return "\033[?1002;1003;1005;1006h\033[?1049h\033^hideMousePointer\033\\"; |
| 4477 | } |
| 4478 | return "\033[?1002;1003;1006;1005l\033[?1049l\033^showMousePointer\033\\"; |
| 4479 | } |
| 4480 | |
| 4481 | } |