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daa4106c | 1 | /* |
b1589621 KL |
2 | * Jexer - Java Text User Interface |
3 | * | |
e16dda65 | 4 | * The MIT License (MIT) |
b1589621 | 5 | * |
a69ed767 | 6 | * Copyright (C) 2019 Kevin Lamonte |
b1589621 | 7 | * |
e16dda65 KL |
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: | |
b1589621 | 14 | * |
e16dda65 KL |
15 | * The above copyright notice and this permission notice shall be included in |
16 | * all copies or substantial portions of the Software. | |
b1589621 | 17 | * |
e16dda65 KL |
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. | |
7b5261bc KL |
25 | * |
26 | * @author Kevin Lamonte [kevin.lamonte@gmail.com] | |
27 | * @version 1 | |
b1589621 | 28 | */ |
42873e30 | 29 | package jexer.backend; |
b1589621 | 30 | |
a69ed767 | 31 | import java.awt.image.BufferedImage; |
b1589621 | 32 | import java.io.BufferedReader; |
4328bb42 KL |
33 | import java.io.FileDescriptor; |
34 | import java.io.FileInputStream; | |
b1589621 KL |
35 | import java.io.InputStream; |
36 | import java.io.InputStreamReader; | |
37 | import java.io.IOException; | |
38 | import java.io.OutputStream; | |
39 | import java.io.OutputStreamWriter; | |
40 | import java.io.PrintWriter; | |
41 | import java.io.Reader; | |
42 | import java.io.UnsupportedEncodingException; | |
43 | import java.util.ArrayList; | |
a69ed767 KL |
44 | import java.util.Collections; |
45 | import java.util.HashMap; | |
b1589621 | 46 | import java.util.List; |
b1589621 | 47 | |
a69ed767 | 48 | import jexer.TImage; |
42873e30 KL |
49 | import jexer.bits.Cell; |
50 | import jexer.bits.CellAttributes; | |
b1589621 | 51 | import jexer.bits.Color; |
abb84744 | 52 | import jexer.event.TCommandEvent; |
b1589621 KL |
53 | import jexer.event.TInputEvent; |
54 | import jexer.event.TKeypressEvent; | |
55 | import jexer.event.TMouseEvent; | |
56 | import jexer.event.TResizeEvent; | |
abb84744 | 57 | import static jexer.TCommand.*; |
b1589621 KL |
58 | import static jexer.TKeypress.*; |
59 | ||
60 | /** | |
7b5261bc KL |
61 | * This class reads keystrokes and mouse events and emits output to ANSI |
62 | * X3.64 / ECMA-48 type terminals e.g. xterm, linux, vt100, ansi.sys, etc. | |
b1589621 | 63 | */ |
051e2913 KL |
64 | public class ECMA48Terminal extends LogicalScreen |
65 | implements TerminalReader, Runnable { | |
42873e30 | 66 | |
d36057df KL |
67 | // ------------------------------------------------------------------------ |
68 | // Constants -------------------------------------------------------------- | |
69 | // ------------------------------------------------------------------------ | |
70 | ||
71 | /** | |
72 | * States in the input parser. | |
73 | */ | |
74 | private enum ParseState { | |
75 | GROUND, | |
76 | ESCAPE, | |
77 | ESCAPE_INTERMEDIATE, | |
78 | CSI_ENTRY, | |
79 | CSI_PARAM, | |
80 | MOUSE, | |
81 | MOUSE_SGR, | |
82 | } | |
83 | ||
84 | // ------------------------------------------------------------------------ | |
85 | // Variables -------------------------------------------------------------- | |
86 | // ------------------------------------------------------------------------ | |
87 | ||
42873e30 KL |
88 | /** |
89 | * Emit debugging to stderr. | |
90 | */ | |
91 | private boolean debugToStderr = false; | |
b1589621 | 92 | |
15ea4d73 | 93 | /** |
051e2913 KL |
94 | * If true, emit T.416-style RGB colors for normal system colors. This |
95 | * is a) expensive in bandwidth, and b) potentially terrible looking for | |
96 | * non-xterms. | |
15ea4d73 KL |
97 | */ |
98 | private static boolean doRgbColor = false; | |
99 | ||
b1589621 | 100 | /** |
7b5261bc KL |
101 | * The session information. |
102 | */ | |
103 | private SessionInfo sessionInfo; | |
104 | ||
4328bb42 | 105 | /** |
7b5261bc | 106 | * The event queue, filled up by a thread reading on input. |
4328bb42 KL |
107 | */ |
108 | private List<TInputEvent> eventQueue; | |
109 | ||
110 | /** | |
111 | * If true, we want the reader thread to exit gracefully. | |
112 | */ | |
113 | private boolean stopReaderThread; | |
114 | ||
115 | /** | |
7b5261bc | 116 | * The reader thread. |
4328bb42 KL |
117 | */ |
118 | private Thread readerThread; | |
119 | ||
b1589621 KL |
120 | /** |
121 | * Parameters being collected. E.g. if the string is \033[1;3m, then | |
122 | * params[0] will be 1 and params[1] will be 3. | |
123 | */ | |
d36057df | 124 | private List<String> params; |
b1589621 KL |
125 | |
126 | /** | |
7b5261bc | 127 | * Current parsing state. |
b1589621 KL |
128 | */ |
129 | private ParseState state; | |
130 | ||
131 | /** | |
7b5261bc KL |
132 | * The time we entered ESCAPE. If we get a bare escape without a code |
133 | * following it, this is used to return that bare escape. | |
b1589621 KL |
134 | */ |
135 | private long escapeTime; | |
136 | ||
a83fea2b KL |
137 | /** |
138 | * The time we last checked the window size. We try not to spawn stty | |
139 | * more than once per second. | |
140 | */ | |
141 | private long windowSizeTime; | |
142 | ||
b1589621 KL |
143 | /** |
144 | * true if mouse1 was down. Used to report mouse1 on the release event. | |
145 | */ | |
146 | private boolean mouse1; | |
147 | ||
148 | /** | |
149 | * true if mouse2 was down. Used to report mouse2 on the release event. | |
150 | */ | |
151 | private boolean mouse2; | |
152 | ||
153 | /** | |
154 | * true if mouse3 was down. Used to report mouse3 on the release event. | |
155 | */ | |
156 | private boolean mouse3; | |
157 | ||
158 | /** | |
159 | * Cache the cursor visibility value so we only emit the sequence when we | |
160 | * need to. | |
161 | */ | |
162 | private boolean cursorOn = true; | |
163 | ||
164 | /** | |
165 | * Cache the last window size to figure out if a TResizeEvent needs to be | |
166 | * generated. | |
167 | */ | |
168 | private TResizeEvent windowResize = null; | |
169 | ||
a69ed767 KL |
170 | /** |
171 | * Window width in pixels. Used for sixel support. | |
172 | */ | |
173 | private int widthPixels = 640; | |
174 | ||
175 | /** | |
176 | * Window height in pixels. Used for sixel support. | |
177 | */ | |
178 | private int heightPixels = 400; | |
179 | ||
180 | /** | |
181 | * If true, emit image data via sixel. | |
182 | */ | |
183 | private boolean sixel = true; | |
184 | ||
185 | /** | |
186 | * The sixel palette handler. | |
187 | */ | |
188 | private SixelPalette palette = null; | |
189 | ||
190 | /** | |
191 | * The sixel post-rendered string cache. | |
192 | */ | |
193 | private SixelCache sixelCache = null; | |
194 | ||
a75902fa KL |
195 | /** |
196 | * Number of colors in the sixel palette. Xterm 335 defines the max as | |
197 | * 1024. Valid values are: 2 (black and white), 256, 512, 1024, and | |
198 | * 2048. | |
199 | */ | |
200 | private int sixelPaletteSize = 1024; | |
201 | ||
b1589621 KL |
202 | /** |
203 | * If true, then we changed System.in and need to change it back. | |
204 | */ | |
205 | private boolean setRawMode; | |
206 | ||
207 | /** | |
208 | * The terminal's input. If an InputStream is not specified in the | |
4328bb42 KL |
209 | * constructor, then this InputStreamReader will be bound to System.in |
210 | * with UTF-8 encoding. | |
b1589621 KL |
211 | */ |
212 | private Reader input; | |
213 | ||
4328bb42 KL |
214 | /** |
215 | * The terminal's raw InputStream. If an InputStream is not specified in | |
216 | * the constructor, then this InputReader will be bound to System.in. | |
217 | * This is used by run() to see if bytes are available() before calling | |
218 | * (Reader)input.read(). | |
219 | */ | |
220 | private InputStream inputStream; | |
221 | ||
b1589621 KL |
222 | /** |
223 | * The terminal's output. If an OutputStream is not specified in the | |
224 | * constructor, then this PrintWriter will be bound to System.out with | |
225 | * UTF-8 encoding. | |
226 | */ | |
227 | private PrintWriter output; | |
228 | ||
92554d64 KL |
229 | /** |
230 | * The listening object that run() wakes up on new input. | |
231 | */ | |
232 | private Object listener; | |
233 | ||
a69ed767 KL |
234 | /** |
235 | * SixelPalette is used to manage the conversion of images between 24-bit | |
a75902fa | 236 | * RGB color and a palette of sixelPaletteSize colors. |
a69ed767 KL |
237 | */ |
238 | private class SixelPalette { | |
239 | ||
240 | /** | |
241 | * Color palette for sixel output, sorted low to high. | |
242 | */ | |
243 | private List<Integer> rgbColors = new ArrayList<Integer>(); | |
244 | ||
245 | /** | |
246 | * Map of color palette index for sixel output, from the order it was | |
247 | * generated by makePalette() to rgbColors. | |
248 | */ | |
a75902fa | 249 | private int [] rgbSortedIndex = new int[sixelPaletteSize]; |
a69ed767 KL |
250 | |
251 | /** | |
252 | * The color palette, organized by hue, saturation, and luminance. | |
253 | * This is used for a fast color match. | |
254 | */ | |
255 | private ArrayList<ArrayList<ArrayList<ColorIdx>>> hslColors; | |
256 | ||
257 | /** | |
258 | * Number of bits for hue. | |
259 | */ | |
260 | private int hueBits = -1; | |
261 | ||
262 | /** | |
263 | * Number of bits for saturation. | |
264 | */ | |
265 | private int satBits = -1; | |
266 | ||
267 | /** | |
268 | * Number of bits for luminance. | |
269 | */ | |
270 | private int lumBits = -1; | |
271 | ||
272 | /** | |
273 | * Step size for hue bins. | |
274 | */ | |
275 | private int hueStep = -1; | |
276 | ||
277 | /** | |
278 | * Step size for saturation bins. | |
279 | */ | |
280 | private int satStep = -1; | |
281 | ||
282 | /** | |
283 | * Cached RGB to HSL result. | |
284 | */ | |
285 | private int hsl[] = new int[3]; | |
286 | ||
287 | /** | |
288 | * ColorIdx records a RGB color and its palette index. | |
289 | */ | |
290 | private class ColorIdx { | |
291 | /** | |
292 | * The 24-bit RGB color. | |
293 | */ | |
294 | public int color; | |
295 | ||
296 | /** | |
297 | * The palette index for this color. | |
298 | */ | |
299 | public int index; | |
300 | ||
301 | /** | |
302 | * Public constructor. | |
303 | * | |
304 | * @param color the 24-bit RGB color | |
305 | * @param index the palette index for this color | |
306 | */ | |
307 | public ColorIdx(final int color, final int index) { | |
308 | this.color = color; | |
309 | this.index = index; | |
310 | } | |
311 | } | |
312 | ||
313 | /** | |
314 | * Public constructor. | |
315 | */ | |
316 | public SixelPalette() { | |
317 | makePalette(); | |
318 | } | |
319 | ||
320 | /** | |
321 | * Find the nearest match for a color in the palette. | |
322 | * | |
323 | * @param color the RGB color | |
324 | * @return the index in rgbColors that is closest to color | |
325 | */ | |
326 | public int matchColor(final int color) { | |
327 | ||
328 | assert (color >= 0); | |
329 | ||
330 | /* | |
331 | * matchColor() is a critical performance bottleneck. To make it | |
332 | * decent, we do the following: | |
333 | * | |
334 | * 1. Find the nearest two hues that bracket this color. | |
335 | * | |
336 | * 2. Find the nearest two saturations that bracket this color. | |
337 | * | |
338 | * 3. Iterate within these four bands of luminance values, | |
339 | * returning the closest color by Euclidean distance. | |
340 | * | |
341 | * This strategy reduces the search space by about 97%. | |
342 | */ | |
343 | int red = (color >>> 16) & 0xFF; | |
344 | int green = (color >>> 8) & 0xFF; | |
345 | int blue = color & 0xFF; | |
346 | ||
a75902fa | 347 | if (sixelPaletteSize == 2) { |
f5b7a696 KL |
348 | if (((red * red) + (green * green) + (blue * blue)) < 35568) { |
349 | // Black | |
350 | return 0; | |
351 | } | |
352 | // White | |
353 | return 1; | |
354 | } | |
355 | ||
356 | ||
a69ed767 KL |
357 | rgbToHsl(red, green, blue, hsl); |
358 | int hue = hsl[0]; | |
359 | int sat = hsl[1]; | |
360 | int lum = hsl[2]; | |
361 | // System.err.printf("%d %d %d\n", hue, sat, lum); | |
362 | ||
363 | double diff = Double.MAX_VALUE; | |
364 | int idx = -1; | |
365 | ||
366 | int hue1 = hue / (360/hueStep); | |
367 | int hue2 = hue1 + 1; | |
368 | if (hue1 >= hslColors.size() - 1) { | |
369 | // Bracket pure red from above. | |
370 | hue1 = hslColors.size() - 1; | |
371 | hue2 = 0; | |
372 | } else if (hue1 == 0) { | |
373 | // Bracket pure red from below. | |
374 | hue2 = hslColors.size() - 1; | |
375 | } | |
376 | ||
377 | for (int hI = hue1; hI != -1;) { | |
378 | ArrayList<ArrayList<ColorIdx>> sats = hslColors.get(hI); | |
379 | if (hI == hue1) { | |
380 | hI = hue2; | |
381 | } else if (hI == hue2) { | |
382 | hI = -1; | |
383 | } | |
384 | ||
385 | int sMin = (sat / satStep) - 1; | |
386 | int sMax = sMin + 1; | |
387 | if (sMin < 0) { | |
388 | sMin = 0; | |
389 | sMax = 1; | |
390 | } else if (sMin == sats.size() - 1) { | |
391 | sMax = sMin; | |
392 | sMin--; | |
393 | } | |
394 | assert (sMin >= 0); | |
395 | assert (sMax - sMin == 1); | |
396 | ||
397 | // int sMin = 0; | |
398 | // int sMax = sats.size() - 1; | |
399 | ||
400 | for (int sI = sMin; sI <= sMax; sI++) { | |
401 | ArrayList<ColorIdx> lums = sats.get(sI); | |
402 | ||
403 | // True 3D colorspace match for the remaining values | |
404 | for (ColorIdx c: lums) { | |
405 | int rgbColor = c.color; | |
406 | double newDiff = 0; | |
407 | int red2 = (rgbColor >>> 16) & 0xFF; | |
408 | int green2 = (rgbColor >>> 8) & 0xFF; | |
409 | int blue2 = rgbColor & 0xFF; | |
410 | newDiff += Math.pow(red2 - red, 2); | |
411 | newDiff += Math.pow(green2 - green, 2); | |
412 | newDiff += Math.pow(blue2 - blue, 2); | |
413 | if (newDiff < diff) { | |
414 | idx = rgbSortedIndex[c.index]; | |
415 | diff = newDiff; | |
416 | } | |
417 | } | |
418 | } | |
419 | } | |
420 | ||
421 | if (((red * red) + (green * green) + (blue * blue)) < diff) { | |
422 | // Black is a closer match. | |
423 | idx = 0; | |
424 | } else if ((((255 - red) * (255 - red)) + | |
425 | ((255 - green) * (255 - green)) + | |
426 | ((255 - blue) * (255 - blue))) < diff) { | |
427 | ||
428 | // White is a closer match. | |
a75902fa | 429 | idx = sixelPaletteSize - 1; |
a69ed767 KL |
430 | } |
431 | assert (idx != -1); | |
432 | return idx; | |
433 | } | |
434 | ||
435 | /** | |
436 | * Clamp an int value to [0, 255]. | |
437 | * | |
438 | * @param x the int value | |
439 | * @return an int between 0 and 255. | |
440 | */ | |
441 | private int clamp(final int x) { | |
442 | if (x < 0) { | |
443 | return 0; | |
444 | } | |
445 | if (x > 255) { | |
446 | return 255; | |
447 | } | |
448 | return x; | |
449 | } | |
450 | ||
451 | /** | |
a75902fa | 452 | * Dither an image to a sixelPaletteSize palette. The dithered |
a69ed767 KL |
453 | * image cells will contain indexes into the palette. |
454 | * | |
455 | * @param image the image to dither | |
456 | * @return the dithered image. Every pixel is an index into the | |
457 | * palette. | |
458 | */ | |
459 | public BufferedImage ditherImage(final BufferedImage image) { | |
460 | ||
461 | BufferedImage ditheredImage = new BufferedImage(image.getWidth(), | |
462 | image.getHeight(), BufferedImage.TYPE_INT_ARGB); | |
463 | ||
464 | int [] rgbArray = image.getRGB(0, 0, image.getWidth(), | |
465 | image.getHeight(), null, 0, image.getWidth()); | |
466 | ditheredImage.setRGB(0, 0, image.getWidth(), image.getHeight(), | |
467 | rgbArray, 0, image.getWidth()); | |
468 | ||
469 | for (int imageY = 0; imageY < image.getHeight(); imageY++) { | |
470 | for (int imageX = 0; imageX < image.getWidth(); imageX++) { | |
471 | int oldPixel = ditheredImage.getRGB(imageX, | |
472 | imageY) & 0xFFFFFF; | |
473 | int colorIdx = matchColor(oldPixel); | |
474 | assert (colorIdx >= 0); | |
a75902fa | 475 | assert (colorIdx < sixelPaletteSize); |
a69ed767 KL |
476 | int newPixel = rgbColors.get(colorIdx); |
477 | ditheredImage.setRGB(imageX, imageY, colorIdx); | |
478 | ||
479 | int oldRed = (oldPixel >>> 16) & 0xFF; | |
480 | int oldGreen = (oldPixel >>> 8) & 0xFF; | |
481 | int oldBlue = oldPixel & 0xFF; | |
482 | ||
483 | int newRed = (newPixel >>> 16) & 0xFF; | |
484 | int newGreen = (newPixel >>> 8) & 0xFF; | |
485 | int newBlue = newPixel & 0xFF; | |
486 | ||
487 | int redError = (oldRed - newRed) / 16; | |
488 | int greenError = (oldGreen - newGreen) / 16; | |
489 | int blueError = (oldBlue - newBlue) / 16; | |
490 | ||
491 | int red, green, blue; | |
492 | if (imageX < image.getWidth() - 1) { | |
493 | int pXpY = ditheredImage.getRGB(imageX + 1, imageY); | |
9696a8f6 KL |
494 | red = ((pXpY >>> 16) & 0xFF) + (7 * redError); |
495 | green = ((pXpY >>> 8) & 0xFF) + (7 * greenError); | |
496 | blue = ( pXpY & 0xFF) + (7 * blueError); | |
a69ed767 KL |
497 | red = clamp(red); |
498 | green = clamp(green); | |
499 | blue = clamp(blue); | |
500 | pXpY = ((red & 0xFF) << 16); | |
501 | pXpY |= ((green & 0xFF) << 8) | (blue & 0xFF); | |
502 | ditheredImage.setRGB(imageX + 1, imageY, pXpY); | |
503 | ||
504 | if (imageY < image.getHeight() - 1) { | |
505 | int pXpYp = ditheredImage.getRGB(imageX + 1, | |
506 | imageY + 1); | |
9696a8f6 KL |
507 | red = ((pXpYp >>> 16) & 0xFF) + redError; |
508 | green = ((pXpYp >>> 8) & 0xFF) + greenError; | |
509 | blue = ( pXpYp & 0xFF) + blueError; | |
a69ed767 KL |
510 | red = clamp(red); |
511 | green = clamp(green); | |
512 | blue = clamp(blue); | |
513 | pXpYp = ((red & 0xFF) << 16); | |
514 | pXpYp |= ((green & 0xFF) << 8) | (blue & 0xFF); | |
515 | ditheredImage.setRGB(imageX + 1, imageY + 1, pXpYp); | |
516 | } | |
517 | } else if (imageY < image.getHeight() - 1) { | |
518 | int pXmYp = ditheredImage.getRGB(imageX - 1, | |
519 | imageY + 1); | |
520 | int pXYp = ditheredImage.getRGB(imageX, | |
521 | imageY + 1); | |
522 | ||
9696a8f6 KL |
523 | red = ((pXmYp >>> 16) & 0xFF) + (3 * redError); |
524 | green = ((pXmYp >>> 8) & 0xFF) + (3 * greenError); | |
525 | blue = ( pXmYp & 0xFF) + (3 * blueError); | |
a69ed767 KL |
526 | red = clamp(red); |
527 | green = clamp(green); | |
528 | blue = clamp(blue); | |
529 | pXmYp = ((red & 0xFF) << 16); | |
530 | pXmYp |= ((green & 0xFF) << 8) | (blue & 0xFF); | |
531 | ditheredImage.setRGB(imageX - 1, imageY + 1, pXmYp); | |
532 | ||
9696a8f6 KL |
533 | red = ((pXYp >>> 16) & 0xFF) + (5 * redError); |
534 | green = ((pXYp >>> 8) & 0xFF) + (5 * greenError); | |
535 | blue = ( pXYp & 0xFF) + (5 * blueError); | |
a69ed767 KL |
536 | red = clamp(red); |
537 | green = clamp(green); | |
538 | blue = clamp(blue); | |
539 | pXYp = ((red & 0xFF) << 16); | |
540 | pXYp |= ((green & 0xFF) << 8) | (blue & 0xFF); | |
541 | ditheredImage.setRGB(imageX, imageY + 1, pXYp); | |
542 | } | |
543 | } // for (int imageY = 0; imageY < image.getHeight(); imageY++) | |
544 | } // for (int imageX = 0; imageX < image.getWidth(); imageX++) | |
545 | ||
546 | return ditheredImage; | |
547 | } | |
548 | ||
549 | /** | |
550 | * Convert an RGB color to HSL. | |
551 | * | |
552 | * @param red red color, between 0 and 255 | |
553 | * @param green green color, between 0 and 255 | |
554 | * @param blue blue color, between 0 and 255 | |
555 | * @param hsl the hsl color as [hue, saturation, luminance] | |
556 | */ | |
557 | private void rgbToHsl(final int red, final int green, | |
558 | final int blue, final int [] hsl) { | |
559 | ||
560 | assert ((red >= 0) && (red <= 255)); | |
561 | assert ((green >= 0) && (green <= 255)); | |
562 | assert ((blue >= 0) && (blue <= 255)); | |
563 | ||
564 | double R = red / 255.0; | |
565 | double G = green / 255.0; | |
566 | double B = blue / 255.0; | |
567 | boolean Rmax = false; | |
568 | boolean Gmax = false; | |
569 | boolean Bmax = false; | |
570 | double min = (R < G ? R : G); | |
571 | min = (min < B ? min : B); | |
572 | double max = 0; | |
573 | if ((R >= G) && (R >= B)) { | |
574 | max = R; | |
575 | Rmax = true; | |
576 | } else if ((G >= R) && (G >= B)) { | |
577 | max = G; | |
578 | Gmax = true; | |
579 | } else if ((B >= G) && (B >= R)) { | |
580 | max = B; | |
581 | Bmax = true; | |
582 | } | |
583 | ||
584 | double L = (min + max) / 2.0; | |
585 | double H = 0.0; | |
586 | double S = 0.0; | |
587 | if (min != max) { | |
588 | if (L < 0.5) { | |
589 | S = (max - min) / (max + min); | |
590 | } else { | |
591 | S = (max - min) / (2.0 - max - min); | |
592 | } | |
593 | } | |
594 | if (Rmax) { | |
595 | assert (Gmax == false); | |
596 | assert (Bmax == false); | |
597 | H = (G - B) / (max - min); | |
598 | } else if (Gmax) { | |
599 | assert (Rmax == false); | |
600 | assert (Bmax == false); | |
601 | H = 2.0 + (B - R) / (max - min); | |
602 | } else if (Bmax) { | |
603 | assert (Rmax == false); | |
604 | assert (Gmax == false); | |
605 | H = 4.0 + (R - G) / (max - min); | |
606 | } | |
607 | if (H < 0.0) { | |
608 | H += 6.0; | |
609 | } | |
610 | hsl[0] = (int) (H * 60.0); | |
611 | hsl[1] = (int) (S * 100.0); | |
612 | hsl[2] = (int) (L * 100.0); | |
613 | ||
614 | assert ((hsl[0] >= 0) && (hsl[0] <= 360)); | |
615 | assert ((hsl[1] >= 0) && (hsl[1] <= 100)); | |
616 | assert ((hsl[2] >= 0) && (hsl[2] <= 100)); | |
617 | } | |
618 | ||
619 | /** | |
620 | * Convert a HSL color to RGB. | |
621 | * | |
622 | * @param hue hue, between 0 and 359 | |
623 | * @param sat saturation, between 0 and 100 | |
624 | * @param lum luminance, between 0 and 100 | |
625 | * @return the rgb color as 0x00RRGGBB | |
626 | */ | |
627 | private int hslToRgb(final int hue, final int sat, final int lum) { | |
628 | assert ((hue >= 0) && (hue <= 360)); | |
629 | assert ((sat >= 0) && (sat <= 100)); | |
630 | assert ((lum >= 0) && (lum <= 100)); | |
631 | ||
632 | double S = sat / 100.0; | |
633 | double L = lum / 100.0; | |
634 | double C = (1.0 - Math.abs((2.0 * L) - 1.0)) * S; | |
635 | double Hp = hue / 60.0; | |
636 | double X = C * (1.0 - Math.abs((Hp % 2) - 1.0)); | |
637 | double Rp = 0.0; | |
638 | double Gp = 0.0; | |
639 | double Bp = 0.0; | |
640 | if (Hp <= 1.0) { | |
641 | Rp = C; | |
642 | Gp = X; | |
643 | } else if (Hp <= 2.0) { | |
644 | Rp = X; | |
645 | Gp = C; | |
646 | } else if (Hp <= 3.0) { | |
647 | Gp = C; | |
648 | Bp = X; | |
649 | } else if (Hp <= 4.0) { | |
650 | Gp = X; | |
651 | Bp = C; | |
652 | } else if (Hp <= 5.0) { | |
653 | Rp = X; | |
654 | Bp = C; | |
655 | } else if (Hp <= 6.0) { | |
656 | Rp = C; | |
657 | Bp = X; | |
658 | } | |
659 | double m = L - (C / 2.0); | |
660 | int red = ((int) ((Rp + m) * 255.0)) << 16; | |
661 | int green = ((int) ((Gp + m) * 255.0)) << 8; | |
662 | int blue = (int) ((Bp + m) * 255.0); | |
663 | ||
664 | return (red | green | blue); | |
665 | } | |
666 | ||
667 | /** | |
668 | * Create the sixel palette. | |
669 | */ | |
670 | private void makePalette() { | |
671 | // Generate the sixel palette. Because we have no idea at this | |
672 | // layer which image(s) will be shown, we have to use a common | |
a75902fa | 673 | // palette with sixelPaletteSize colors for everything, and |
a69ed767 KL |
674 | // map the BufferedImage colors to their nearest neighbor in RGB |
675 | // space. | |
676 | ||
a75902fa | 677 | if (sixelPaletteSize == 2) { |
f5b7a696 KL |
678 | rgbColors.add(0); |
679 | rgbColors.add(0xFFFFFF); | |
680 | rgbSortedIndex[0] = 0; | |
681 | rgbSortedIndex[1] = 1; | |
682 | return; | |
683 | } | |
684 | ||
a69ed767 KL |
685 | // We build a palette using the Hue-Saturation-Luminence model, |
686 | // with 5+ bits for Hue, 2+ bits for Saturation, and 1+ bit for | |
687 | // Luminance. We convert these colors to 24-bit RGB, sort them | |
688 | // ascending, and steal the first index for pure black and the | |
689 | // last for pure white. The 8-bit final palette favors bright | |
690 | // colors, somewhere between pastel and classic television | |
691 | // technicolor. 9- and 10-bit palettes are more uniform. | |
692 | ||
693 | // Default at 256 colors. | |
694 | hueBits = 5; | |
695 | satBits = 2; | |
696 | lumBits = 1; | |
697 | ||
a75902fa KL |
698 | assert (sixelPaletteSize >= 256); |
699 | assert ((sixelPaletteSize == 256) | |
700 | || (sixelPaletteSize == 512) | |
701 | || (sixelPaletteSize == 1024) | |
702 | || (sixelPaletteSize == 2048)); | |
a69ed767 | 703 | |
a75902fa | 704 | switch (sixelPaletteSize) { |
a69ed767 KL |
705 | case 512: |
706 | hueBits = 5; | |
707 | satBits = 2; | |
708 | lumBits = 2; | |
709 | break; | |
710 | case 1024: | |
711 | hueBits = 5; | |
712 | satBits = 2; | |
713 | lumBits = 3; | |
714 | break; | |
715 | case 2048: | |
716 | hueBits = 5; | |
717 | satBits = 3; | |
718 | lumBits = 3; | |
719 | break; | |
720 | } | |
721 | hueStep = (int) (Math.pow(2, hueBits)); | |
722 | satStep = (int) (100 / Math.pow(2, satBits)); | |
723 | // 1 bit for luminance: 40 and 70. | |
724 | int lumBegin = 40; | |
725 | int lumStep = 30; | |
726 | switch (lumBits) { | |
727 | case 2: | |
728 | // 2 bits: 20, 40, 60, 80 | |
729 | lumBegin = 20; | |
730 | lumStep = 20; | |
731 | break; | |
732 | case 3: | |
733 | // 3 bits: 8, 20, 32, 44, 56, 68, 80, 92 | |
734 | lumBegin = 8; | |
735 | lumStep = 12; | |
736 | break; | |
737 | } | |
738 | ||
739 | // System.err.printf("<html><body>\n"); | |
740 | // Hue is evenly spaced around the wheel. | |
741 | hslColors = new ArrayList<ArrayList<ArrayList<ColorIdx>>>(); | |
742 | ||
743 | final boolean DEBUG = false; | |
744 | ArrayList<Integer> rawRgbList = new ArrayList<Integer>(); | |
745 | ||
746 | for (int hue = 0; hue < (360 - (360 % hueStep)); | |
747 | hue += (360/hueStep)) { | |
748 | ||
749 | ArrayList<ArrayList<ColorIdx>> satList = null; | |
750 | satList = new ArrayList<ArrayList<ColorIdx>>(); | |
751 | hslColors.add(satList); | |
752 | ||
753 | // Saturation is linearly spaced between pastel and pure. | |
754 | for (int sat = satStep; sat <= 100; sat += satStep) { | |
755 | ||
756 | ArrayList<ColorIdx> lumList = new ArrayList<ColorIdx>(); | |
757 | satList.add(lumList); | |
758 | ||
759 | // Luminance brackets the pure color, but leaning toward | |
760 | // lighter. | |
761 | for (int lum = lumBegin; lum < 100; lum += lumStep) { | |
762 | /* | |
763 | System.err.printf("<font style = \"color:"); | |
764 | System.err.printf("hsl(%d, %d%%, %d%%)", | |
765 | hue, sat, lum); | |
766 | System.err.printf(";\">=</font>\n"); | |
767 | */ | |
768 | int rgbColor = hslToRgb(hue, sat, lum); | |
769 | rgbColors.add(rgbColor); | |
770 | ColorIdx colorIdx = new ColorIdx(rgbColor, | |
771 | rgbColors.size() - 1); | |
772 | lumList.add(colorIdx); | |
773 | ||
774 | rawRgbList.add(rgbColor); | |
775 | if (DEBUG) { | |
776 | int red = (rgbColor >>> 16) & 0xFF; | |
777 | int green = (rgbColor >>> 8) & 0xFF; | |
778 | int blue = rgbColor & 0xFF; | |
779 | int [] backToHsl = new int[3]; | |
780 | rgbToHsl(red, green, blue, backToHsl); | |
781 | System.err.printf("%d [%d] %d [%d] %d [%d]\n", | |
782 | hue, backToHsl[0], sat, backToHsl[1], | |
783 | lum, backToHsl[2]); | |
784 | } | |
785 | } | |
786 | } | |
787 | } | |
788 | // System.err.printf("\n</body></html>\n"); | |
789 | ||
a75902fa | 790 | assert (rgbColors.size() == sixelPaletteSize); |
a69ed767 KL |
791 | |
792 | /* | |
793 | * We need to sort rgbColors, so that toSixel() can know where | |
794 | * BLACK and WHITE are in it. But we also need to be able to | |
795 | * find the sorted values using the old unsorted indexes. So we | |
796 | * will sort it, put all the indexes into a HashMap, and then | |
797 | * build rgbSortedIndex[]. | |
798 | */ | |
799 | Collections.sort(rgbColors); | |
800 | HashMap<Integer, Integer> rgbColorIndices = null; | |
801 | rgbColorIndices = new HashMap<Integer, Integer>(); | |
a75902fa | 802 | for (int i = 0; i < sixelPaletteSize; i++) { |
a69ed767 KL |
803 | rgbColorIndices.put(rgbColors.get(i), i); |
804 | } | |
a75902fa | 805 | for (int i = 0; i < sixelPaletteSize; i++) { |
a69ed767 KL |
806 | int rawColor = rawRgbList.get(i); |
807 | rgbSortedIndex[i] = rgbColorIndices.get(rawColor); | |
808 | } | |
809 | if (DEBUG) { | |
a75902fa | 810 | for (int i = 0; i < sixelPaletteSize; i++) { |
a69ed767 KL |
811 | assert (rawRgbList != null); |
812 | int idx = rgbSortedIndex[i]; | |
813 | int rgbColor = rgbColors.get(idx); | |
a75902fa | 814 | if ((idx != 0) && (idx != sixelPaletteSize - 1)) { |
a69ed767 KL |
815 | /* |
816 | System.err.printf("%d %06x --> %d %06x\n", | |
817 | i, rawRgbList.get(i), idx, rgbColors.get(idx)); | |
818 | */ | |
819 | assert (rgbColor == rawRgbList.get(i)); | |
820 | } | |
821 | } | |
822 | } | |
823 | ||
824 | // Set the dimmest color as true black, and the brightest as true | |
825 | // white. | |
826 | rgbColors.set(0, 0); | |
a75902fa | 827 | rgbColors.set(sixelPaletteSize - 1, 0xFFFFFF); |
a69ed767 KL |
828 | |
829 | /* | |
830 | System.err.printf("<html><body>\n"); | |
831 | for (Integer rgb: rgbColors) { | |
832 | System.err.printf("<font style = \"color:"); | |
833 | System.err.printf("#%06x", rgb); | |
834 | System.err.printf(";\">=</font>\n"); | |
835 | } | |
836 | System.err.printf("\n</body></html>\n"); | |
837 | */ | |
838 | ||
839 | } | |
840 | ||
841 | /** | |
842 | * Emit the sixel palette. | |
843 | * | |
844 | * @param sb the StringBuilder to append to | |
845 | * @param used array of booleans set to true for each color actually | |
846 | * used in this cell, or null to emit the entire palette | |
847 | * @return the string to emit to an ANSI / ECMA-style terminal | |
848 | */ | |
849 | public String emitPalette(final StringBuilder sb, | |
850 | final boolean [] used) { | |
851 | ||
a75902fa | 852 | for (int i = 0; i < sixelPaletteSize; i++) { |
a69ed767 KL |
853 | if (((used != null) && (used[i] == true)) || (used == null)) { |
854 | int rgbColor = rgbColors.get(i); | |
855 | sb.append(String.format("#%d;2;%d;%d;%d", i, | |
856 | ((rgbColor >>> 16) & 0xFF) * 100 / 255, | |
857 | ((rgbColor >>> 8) & 0xFF) * 100 / 255, | |
858 | ( rgbColor & 0xFF) * 100 / 255)); | |
859 | } | |
860 | } | |
861 | return sb.toString(); | |
862 | } | |
863 | } | |
864 | ||
865 | /** | |
866 | * SixelCache is a least-recently-used cache that hangs on to the | |
867 | * post-rendered sixel string for a particular set of cells. | |
868 | */ | |
869 | private class SixelCache { | |
870 | ||
871 | /** | |
872 | * Maximum size of the cache. | |
873 | */ | |
874 | private int maxSize = 100; | |
875 | ||
876 | /** | |
877 | * The entries stored in the cache. | |
878 | */ | |
879 | private HashMap<String, CacheEntry> cache = null; | |
880 | ||
881 | /** | |
882 | * CacheEntry is one entry in the cache. | |
883 | */ | |
884 | private class CacheEntry { | |
885 | /** | |
886 | * The cache key. | |
887 | */ | |
888 | public String key; | |
889 | ||
890 | /** | |
891 | * The cache data. | |
892 | */ | |
893 | public String data; | |
894 | ||
895 | /** | |
896 | * The last time this entry was used. | |
897 | */ | |
898 | public long millis = 0; | |
899 | ||
900 | /** | |
901 | * Public constructor. | |
902 | * | |
903 | * @param key the cache entry key | |
904 | * @param data the cache entry data | |
905 | */ | |
906 | public CacheEntry(final String key, final String data) { | |
907 | this.key = key; | |
908 | this.data = data; | |
909 | this.millis = System.currentTimeMillis(); | |
910 | } | |
911 | } | |
912 | ||
913 | /** | |
914 | * Public constructor. | |
915 | * | |
916 | * @param maxSize the maximum size of the cache | |
917 | */ | |
918 | public SixelCache(final int maxSize) { | |
919 | this.maxSize = maxSize; | |
920 | cache = new HashMap<String, CacheEntry>(); | |
921 | } | |
922 | ||
923 | /** | |
924 | * Make a unique key for a list of cells. | |
925 | * | |
926 | * @param cells the cells | |
927 | * @return the key | |
928 | */ | |
929 | private String makeKey(final ArrayList<Cell> cells) { | |
930 | StringBuilder sb = new StringBuilder(); | |
931 | for (Cell cell: cells) { | |
932 | sb.append(cell.hashCode()); | |
933 | } | |
934 | return sb.toString(); | |
935 | } | |
936 | ||
937 | /** | |
938 | * Get an entry from the cache. | |
939 | * | |
940 | * @param cells the list of cells that are the cache key | |
941 | * @return the sixel string representing these cells, or null if this | |
942 | * list of cells is not in the cache | |
943 | */ | |
944 | public String get(final ArrayList<Cell> cells) { | |
945 | CacheEntry entry = cache.get(makeKey(cells)); | |
946 | if (entry == null) { | |
947 | return null; | |
948 | } | |
949 | entry.millis = System.currentTimeMillis(); | |
950 | return entry.data; | |
951 | } | |
952 | ||
953 | /** | |
954 | * Put an entry into the cache. | |
955 | * | |
956 | * @param cells the list of cells that are the cache key | |
957 | * @param data the sixel string representing these cells | |
958 | */ | |
959 | public void put(final ArrayList<Cell> cells, final String data) { | |
960 | String key = makeKey(cells); | |
961 | ||
962 | // System.err.println("put() " + key + " size " + cache.size()); | |
963 | ||
964 | assert (!cache.containsKey(key)); | |
965 | ||
966 | assert (cache.size() <= maxSize); | |
967 | if (cache.size() == maxSize) { | |
968 | // Cache is at limit, evict oldest entry. | |
969 | long oldestTime = Long.MAX_VALUE; | |
970 | String keyToRemove = null; | |
971 | for (CacheEntry entry: cache.values()) { | |
972 | if ((entry.millis < oldestTime) || (keyToRemove == null)) { | |
973 | keyToRemove = entry.key; | |
974 | oldestTime = entry.millis; | |
975 | } | |
976 | } | |
977 | /* | |
978 | System.err.println("put() remove key = " + keyToRemove + | |
979 | " size " + cache.size()); | |
980 | */ | |
981 | assert (keyToRemove != null); | |
982 | cache.remove(keyToRemove); | |
983 | /* | |
984 | System.err.println("put() removed, size " + cache.size()); | |
985 | */ | |
986 | } | |
987 | assert (cache.size() <= maxSize); | |
988 | CacheEntry entry = new CacheEntry(key, data); | |
989 | assert (key.equals(entry.key)); | |
990 | cache.put(key, entry); | |
991 | /* | |
992 | System.err.println("put() added key " + key + " " + | |
993 | " size " + cache.size()); | |
994 | */ | |
995 | } | |
996 | ||
997 | } | |
998 | ||
d36057df KL |
999 | // ------------------------------------------------------------------------ |
1000 | // Constructors ----------------------------------------------------------- | |
1001 | // ------------------------------------------------------------------------ | |
b1589621 KL |
1002 | |
1003 | /** | |
9f613a0c KL |
1004 | * Constructor sets up state for getEvent(). If either windowWidth or |
1005 | * windowHeight are less than 1, the terminal is not resized. | |
eb29bbb5 KL |
1006 | * |
1007 | * @param listener the object this backend needs to wake up when new | |
1008 | * input comes in | |
1009 | * @param input an InputStream connected to the remote user, or null for | |
1010 | * System.in. If System.in is used, then on non-Windows systems it will | |
1011 | * be put in raw mode; shutdown() will (blindly!) put System.in in cooked | |
1012 | * mode. input is always converted to a Reader with UTF-8 encoding. | |
1013 | * @param output an OutputStream connected to the remote user, or null | |
1014 | * for System.out. output is always converted to a Writer with UTF-8 | |
1015 | * encoding. | |
1016 | * @param windowWidth the number of text columns to start with | |
1017 | * @param windowHeight the number of text rows to start with | |
1018 | * @throws UnsupportedEncodingException if an exception is thrown when | |
1019 | * creating the InputStreamReader | |
1020 | */ | |
1021 | public ECMA48Terminal(final Object listener, final InputStream input, | |
1022 | final OutputStream output, final int windowWidth, | |
1023 | final int windowHeight) throws UnsupportedEncodingException { | |
1024 | ||
1025 | this(listener, input, output); | |
1026 | ||
1027 | // Send dtterm/xterm sequences, which will probably not work because | |
1028 | // allowWindowOps is defaulted to false. | |
9f613a0c KL |
1029 | if ((windowWidth > 0) && (windowHeight > 0)) { |
1030 | String resizeString = String.format("\033[8;%d;%dt", windowHeight, | |
1031 | windowWidth); | |
1032 | this.output.write(resizeString); | |
1033 | this.output.flush(); | |
1034 | } | |
eb29bbb5 KL |
1035 | } |
1036 | ||
1037 | /** | |
1038 | * Constructor sets up state for getEvent(). | |
b1589621 | 1039 | * |
92554d64 KL |
1040 | * @param listener the object this backend needs to wake up when new |
1041 | * input comes in | |
b1589621 KL |
1042 | * @param input an InputStream connected to the remote user, or null for |
1043 | * System.in. If System.in is used, then on non-Windows systems it will | |
1044 | * be put in raw mode; shutdown() will (blindly!) put System.in in cooked | |
1045 | * mode. input is always converted to a Reader with UTF-8 encoding. | |
1046 | * @param output an OutputStream connected to the remote user, or null | |
1047 | * for System.out. output is always converted to a Writer with UTF-8 | |
1048 | * encoding. | |
7b5261bc KL |
1049 | * @throws UnsupportedEncodingException if an exception is thrown when |
1050 | * creating the InputStreamReader | |
b1589621 | 1051 | */ |
92554d64 | 1052 | public ECMA48Terminal(final Object listener, final InputStream input, |
7b5261bc KL |
1053 | final OutputStream output) throws UnsupportedEncodingException { |
1054 | ||
42873e30 | 1055 | resetParser(); |
7b5261bc KL |
1056 | mouse1 = false; |
1057 | mouse2 = false; | |
1058 | mouse3 = false; | |
1059 | stopReaderThread = false; | |
92554d64 | 1060 | this.listener = listener; |
7b5261bc KL |
1061 | |
1062 | if (input == null) { | |
1063 | // inputStream = System.in; | |
1064 | inputStream = new FileInputStream(FileDescriptor.in); | |
1065 | sttyRaw(); | |
1066 | setRawMode = true; | |
1067 | } else { | |
1068 | inputStream = input; | |
1069 | } | |
1070 | this.input = new InputStreamReader(inputStream, "UTF-8"); | |
1071 | ||
7b5261bc | 1072 | if (input instanceof SessionInfo) { |
ea91242c KL |
1073 | // This is a TelnetInputStream that exposes window size and |
1074 | // environment variables from the telnet layer. | |
7b5261bc KL |
1075 | sessionInfo = (SessionInfo) input; |
1076 | } | |
1077 | if (sessionInfo == null) { | |
1078 | if (input == null) { | |
1079 | // Reading right off the tty | |
1080 | sessionInfo = new TTYSessionInfo(); | |
1081 | } else { | |
1082 | sessionInfo = new TSessionInfo(); | |
1083 | } | |
1084 | } | |
1085 | ||
1086 | if (output == null) { | |
1087 | this.output = new PrintWriter(new OutputStreamWriter(System.out, | |
1088 | "UTF-8")); | |
1089 | } else { | |
1090 | this.output = new PrintWriter(new OutputStreamWriter(output, | |
1091 | "UTF-8")); | |
1092 | } | |
1093 | ||
a69ed767 KL |
1094 | // Request xterm report window dimensions in pixels |
1095 | this.output.printf("%s", xtermReportWindowPixelDimensions()); | |
1096 | ||
7b5261bc KL |
1097 | // Enable mouse reporting and metaSendsEscape |
1098 | this.output.printf("%s%s", mouse(true), xtermMetaSendsEscape(true)); | |
55b4f29b | 1099 | this.output.flush(); |
7b5261bc | 1100 | |
3e074355 KL |
1101 | // Query the screen size |
1102 | sessionInfo.queryWindowSize(); | |
1103 | setDimensions(sessionInfo.getWindowWidth(), | |
1104 | sessionInfo.getWindowHeight()); | |
1105 | ||
7b5261bc KL |
1106 | // Hang onto the window size |
1107 | windowResize = new TResizeEvent(TResizeEvent.Type.SCREEN, | |
1108 | sessionInfo.getWindowWidth(), sessionInfo.getWindowHeight()); | |
1109 | ||
e23ea538 | 1110 | reloadOptions(); |
a69ed767 | 1111 | |
7b5261bc | 1112 | // Spin up the input reader |
63bb9478 | 1113 | eventQueue = new ArrayList<TInputEvent>(); |
7b5261bc KL |
1114 | readerThread = new Thread(this); |
1115 | readerThread.start(); | |
42873e30 | 1116 | |
42873e30 KL |
1117 | // Clear the screen |
1118 | this.output.write(clearAll()); | |
1119 | this.output.flush(); | |
b1589621 KL |
1120 | } |
1121 | ||
6985c572 KL |
1122 | /** |
1123 | * Constructor sets up state for getEvent(). | |
1124 | * | |
1125 | * @param listener the object this backend needs to wake up when new | |
1126 | * input comes in | |
1127 | * @param input the InputStream underlying 'reader'. Its available() | |
1128 | * method is used to determine if reader.read() will block or not. | |
1129 | * @param reader a Reader connected to the remote user. | |
1130 | * @param writer a PrintWriter connected to the remote user. | |
1131 | * @param setRawMode if true, set System.in into raw mode with stty. | |
1132 | * This should in general not be used. It is here solely for Demo3, | |
1133 | * which uses System.in. | |
1134 | * @throws IllegalArgumentException if input, reader, or writer are null. | |
1135 | */ | |
1136 | public ECMA48Terminal(final Object listener, final InputStream input, | |
1137 | final Reader reader, final PrintWriter writer, | |
1138 | final boolean setRawMode) { | |
1139 | ||
1140 | if (input == null) { | |
1141 | throw new IllegalArgumentException("InputStream must be specified"); | |
1142 | } | |
1143 | if (reader == null) { | |
1144 | throw new IllegalArgumentException("Reader must be specified"); | |
1145 | } | |
1146 | if (writer == null) { | |
1147 | throw new IllegalArgumentException("Writer must be specified"); | |
1148 | } | |
42873e30 | 1149 | resetParser(); |
6985c572 KL |
1150 | mouse1 = false; |
1151 | mouse2 = false; | |
1152 | mouse3 = false; | |
1153 | stopReaderThread = false; | |
1154 | this.listener = listener; | |
1155 | ||
1156 | inputStream = input; | |
1157 | this.input = reader; | |
1158 | ||
1159 | if (setRawMode == true) { | |
1160 | sttyRaw(); | |
1161 | } | |
1162 | this.setRawMode = setRawMode; | |
1163 | ||
1164 | if (input instanceof SessionInfo) { | |
1165 | // This is a TelnetInputStream that exposes window size and | |
1166 | // environment variables from the telnet layer. | |
1167 | sessionInfo = (SessionInfo) input; | |
1168 | } | |
1169 | if (sessionInfo == null) { | |
31b7033c KL |
1170 | if (setRawMode == true) { |
1171 | // Reading right off the tty | |
1172 | sessionInfo = new TTYSessionInfo(); | |
1173 | } else { | |
1174 | sessionInfo = new TSessionInfo(); | |
1175 | } | |
6985c572 KL |
1176 | } |
1177 | ||
1178 | this.output = writer; | |
1179 | ||
a69ed767 KL |
1180 | // Request xterm report window dimensions in pixels |
1181 | this.output.printf("%s", xtermReportWindowPixelDimensions()); | |
1182 | ||
6985c572 KL |
1183 | // Enable mouse reporting and metaSendsEscape |
1184 | this.output.printf("%s%s", mouse(true), xtermMetaSendsEscape(true)); | |
1185 | this.output.flush(); | |
1186 | ||
3e074355 KL |
1187 | // Query the screen size |
1188 | sessionInfo.queryWindowSize(); | |
1189 | setDimensions(sessionInfo.getWindowWidth(), | |
1190 | sessionInfo.getWindowHeight()); | |
1191 | ||
6985c572 KL |
1192 | // Hang onto the window size |
1193 | windowResize = new TResizeEvent(TResizeEvent.Type.SCREEN, | |
1194 | sessionInfo.getWindowWidth(), sessionInfo.getWindowHeight()); | |
1195 | ||
e23ea538 | 1196 | reloadOptions(); |
a69ed767 | 1197 | |
6985c572 | 1198 | // Spin up the input reader |
63bb9478 | 1199 | eventQueue = new ArrayList<TInputEvent>(); |
6985c572 KL |
1200 | readerThread = new Thread(this); |
1201 | readerThread.start(); | |
42873e30 | 1202 | |
42873e30 KL |
1203 | // Clear the screen |
1204 | this.output.write(clearAll()); | |
1205 | this.output.flush(); | |
6985c572 KL |
1206 | } |
1207 | ||
1208 | /** | |
1209 | * Constructor sets up state for getEvent(). | |
1210 | * | |
1211 | * @param listener the object this backend needs to wake up when new | |
1212 | * input comes in | |
1213 | * @param input the InputStream underlying 'reader'. Its available() | |
1214 | * method is used to determine if reader.read() will block or not. | |
1215 | * @param reader a Reader connected to the remote user. | |
1216 | * @param writer a PrintWriter connected to the remote user. | |
1217 | * @throws IllegalArgumentException if input, reader, or writer are null. | |
1218 | */ | |
1219 | public ECMA48Terminal(final Object listener, final InputStream input, | |
1220 | final Reader reader, final PrintWriter writer) { | |
1221 | ||
1222 | this(listener, input, reader, writer, false); | |
1223 | } | |
1224 | ||
d36057df KL |
1225 | // ------------------------------------------------------------------------ |
1226 | // LogicalScreen ---------------------------------------------------------- | |
1227 | // ------------------------------------------------------------------------ | |
1228 | ||
1229 | /** | |
1230 | * Set the window title. | |
1231 | * | |
1232 | * @param title the new title | |
1233 | */ | |
1234 | @Override | |
1235 | public void setTitle(final String title) { | |
1236 | output.write(getSetTitleString(title)); | |
1237 | flush(); | |
1238 | } | |
1239 | ||
1240 | /** | |
1241 | * Push the logical screen to the physical device. | |
1242 | */ | |
1243 | @Override | |
1244 | public void flushPhysical() { | |
a69ed767 | 1245 | StringBuilder sb = new StringBuilder(); |
d36057df KL |
1246 | if ((cursorVisible) |
1247 | && (cursorY >= 0) | |
1248 | && (cursorX >= 0) | |
1249 | && (cursorY <= height - 1) | |
1250 | && (cursorX <= width - 1) | |
1251 | ) { | |
a69ed767 KL |
1252 | flushString(sb); |
1253 | sb.append(cursor(true)); | |
1254 | sb.append(gotoXY(cursorX, cursorY)); | |
d36057df | 1255 | } else { |
a69ed767 KL |
1256 | sb.append(cursor(false)); |
1257 | flushString(sb); | |
d36057df | 1258 | } |
a69ed767 | 1259 | output.write(sb.toString()); |
d36057df KL |
1260 | flush(); |
1261 | } | |
1262 | ||
9696a8f6 KL |
1263 | /** |
1264 | * Resize the physical screen to match the logical screen dimensions. | |
1265 | */ | |
1266 | @Override | |
1267 | public void resizeToScreen() { | |
1268 | // Send dtterm/xterm sequences, which will probably not work because | |
1269 | // allowWindowOps is defaulted to false. | |
1270 | String resizeString = String.format("\033[8;%d;%dt", getHeight(), | |
1271 | getWidth()); | |
1272 | this.output.write(resizeString); | |
1273 | this.output.flush(); | |
1274 | } | |
1275 | ||
d36057df KL |
1276 | // ------------------------------------------------------------------------ |
1277 | // TerminalReader --------------------------------------------------------- | |
1278 | // ------------------------------------------------------------------------ | |
1279 | ||
1280 | /** | |
1281 | * Check if there are events in the queue. | |
1282 | * | |
1283 | * @return if true, getEvents() has something to return to the backend | |
1284 | */ | |
1285 | public boolean hasEvents() { | |
1286 | synchronized (eventQueue) { | |
1287 | return (eventQueue.size() > 0); | |
1288 | } | |
1289 | } | |
1290 | ||
1291 | /** | |
1292 | * Return any events in the IO queue. | |
1293 | * | |
1294 | * @param queue list to append new events to | |
1295 | */ | |
1296 | public void getEvents(final List<TInputEvent> queue) { | |
1297 | synchronized (eventQueue) { | |
1298 | if (eventQueue.size() > 0) { | |
1299 | synchronized (queue) { | |
1300 | queue.addAll(eventQueue); | |
1301 | } | |
1302 | eventQueue.clear(); | |
1303 | } | |
1304 | } | |
1305 | } | |
1306 | ||
b1589621 | 1307 | /** |
7b5261bc | 1308 | * Restore terminal to normal state. |
b1589621 | 1309 | */ |
42873e30 | 1310 | public void closeTerminal() { |
4328bb42 | 1311 | |
7b5261bc KL |
1312 | // System.err.println("=== shutdown() ==="); System.err.flush(); |
1313 | ||
1314 | // Tell the reader thread to stop looking at input | |
1315 | stopReaderThread = true; | |
1316 | try { | |
1317 | readerThread.join(); | |
1318 | } catch (InterruptedException e) { | |
a69ed767 KL |
1319 | if (debugToStderr) { |
1320 | e.printStackTrace(); | |
1321 | } | |
7b5261bc KL |
1322 | } |
1323 | ||
0525b2ed KL |
1324 | // Disable mouse reporting and show cursor. Defensive null check |
1325 | // here in case closeTerminal() is called twice. | |
1326 | if (output != null) { | |
1327 | output.printf("%s%s%s", mouse(false), cursor(true), normal()); | |
1328 | output.flush(); | |
1329 | } | |
7b5261bc KL |
1330 | |
1331 | if (setRawMode) { | |
1332 | sttyCooked(); | |
1333 | setRawMode = false; | |
1334 | // We don't close System.in/out | |
1335 | } else { | |
1336 | // Shut down the streams, this should wake up the reader thread | |
1337 | // and make it exit. | |
a69ed767 KL |
1338 | if (input != null) { |
1339 | try { | |
7b5261bc | 1340 | input.close(); |
a69ed767 KL |
1341 | } catch (IOException e) { |
1342 | // SQUASH | |
7b5261bc | 1343 | } |
a69ed767 KL |
1344 | input = null; |
1345 | } | |
1346 | if (output != null) { | |
1347 | output.close(); | |
1348 | output = null; | |
7b5261bc KL |
1349 | } |
1350 | } | |
b1589621 KL |
1351 | } |
1352 | ||
d36057df KL |
1353 | /** |
1354 | * Set listener to a different Object. | |
1355 | * | |
1356 | * @param listener the new listening object that run() wakes up on new | |
1357 | * input | |
1358 | */ | |
1359 | public void setListener(final Object listener) { | |
1360 | this.listener = listener; | |
1361 | } | |
1362 | ||
e23ea538 KL |
1363 | /** |
1364 | * Reload options from System properties. | |
1365 | */ | |
1366 | public void reloadOptions() { | |
1367 | // Permit RGB colors only if externally requested. | |
1368 | if (System.getProperty("jexer.ECMA48.rgbColor", | |
1369 | "false").equals("true") | |
1370 | ) { | |
1371 | doRgbColor = true; | |
1372 | } else { | |
1373 | doRgbColor = false; | |
1374 | } | |
1375 | ||
1376 | // Pull the system properties for sixel output. | |
1377 | if (System.getProperty("jexer.ECMA48.sixel", "true").equals("true")) { | |
1378 | sixel = true; | |
1379 | } else { | |
1380 | sixel = false; | |
1381 | } | |
a75902fa KL |
1382 | |
1383 | // Palette size | |
1384 | int paletteSize = 1024; | |
1385 | try { | |
1386 | paletteSize = Integer.parseInt(System.getProperty( | |
1387 | "jexer.ECMA48.sixelPaletteSize", "1024")); | |
1388 | switch (paletteSize) { | |
1389 | case 2: | |
1390 | case 256: | |
1391 | case 512: | |
1392 | case 1024: | |
1393 | case 2048: | |
1394 | sixelPaletteSize = paletteSize; | |
1395 | break; | |
1396 | default: | |
1397 | // Ignore value | |
1398 | break; | |
1399 | } | |
1400 | } catch (NumberFormatException e) { | |
1401 | // SQUASH | |
1402 | } | |
e23ea538 KL |
1403 | } |
1404 | ||
d36057df KL |
1405 | // ------------------------------------------------------------------------ |
1406 | // Runnable --------------------------------------------------------------- | |
1407 | // ------------------------------------------------------------------------ | |
1408 | ||
1409 | /** | |
1410 | * Read function runs on a separate thread. | |
1411 | */ | |
1412 | public void run() { | |
1413 | boolean done = false; | |
1414 | // available() will often return > 1, so we need to read in chunks to | |
1415 | // stay caught up. | |
1416 | char [] readBuffer = new char[128]; | |
63bb9478 | 1417 | List<TInputEvent> events = new ArrayList<TInputEvent>(); |
d36057df KL |
1418 | |
1419 | while (!done && !stopReaderThread) { | |
1420 | try { | |
1421 | // We assume that if inputStream has bytes available, then | |
1422 | // input won't block on read(). | |
1423 | int n = inputStream.available(); | |
1424 | ||
1425 | /* | |
1426 | System.err.printf("inputStream.available(): %d\n", n); | |
1427 | System.err.flush(); | |
1428 | */ | |
1429 | ||
1430 | if (n > 0) { | |
1431 | if (readBuffer.length < n) { | |
1432 | // The buffer wasn't big enough, make it huger | |
1433 | readBuffer = new char[readBuffer.length * 2]; | |
1434 | } | |
1435 | ||
1436 | // System.err.printf("BEFORE read()\n"); System.err.flush(); | |
1437 | ||
1438 | int rc = input.read(readBuffer, 0, readBuffer.length); | |
1439 | ||
1440 | /* | |
1441 | System.err.printf("AFTER read() %d\n", rc); | |
1442 | System.err.flush(); | |
1443 | */ | |
1444 | ||
1445 | if (rc == -1) { | |
1446 | // This is EOF | |
1447 | done = true; | |
1448 | } else { | |
1449 | for (int i = 0; i < rc; i++) { | |
1450 | int ch = readBuffer[i]; | |
1451 | processChar(events, (char)ch); | |
1452 | } | |
1453 | getIdleEvents(events); | |
1454 | if (events.size() > 0) { | |
1455 | // Add to the queue for the backend thread to | |
1456 | // be able to obtain. | |
1457 | synchronized (eventQueue) { | |
1458 | eventQueue.addAll(events); | |
1459 | } | |
1460 | if (listener != null) { | |
1461 | synchronized (listener) { | |
1462 | listener.notifyAll(); | |
1463 | } | |
1464 | } | |
1465 | events.clear(); | |
1466 | } | |
1467 | } | |
1468 | } else { | |
1469 | getIdleEvents(events); | |
1470 | if (events.size() > 0) { | |
1471 | synchronized (eventQueue) { | |
1472 | eventQueue.addAll(events); | |
1473 | } | |
1474 | if (listener != null) { | |
1475 | synchronized (listener) { | |
1476 | listener.notifyAll(); | |
1477 | } | |
1478 | } | |
1479 | events.clear(); | |
1480 | } | |
1481 | ||
eb0d6c82 KL |
1482 | if (output.checkError()) { |
1483 | // This is EOF. | |
1484 | done = true; | |
1485 | } | |
1486 | ||
d36057df KL |
1487 | // Wait 20 millis for more data |
1488 | Thread.sleep(20); | |
1489 | } | |
1490 | // System.err.println("end while loop"); System.err.flush(); | |
1491 | } catch (InterruptedException e) { | |
1492 | // SQUASH | |
1493 | } catch (IOException e) { | |
1494 | e.printStackTrace(); | |
1495 | done = true; | |
1496 | } | |
1497 | } // while ((done == false) && (stopReaderThread == false)) | |
eb0d6c82 | 1498 | |
abb84744 KL |
1499 | // Pass an event up to TApplication to tell it this Backend is done. |
1500 | synchronized (eventQueue) { | |
1501 | eventQueue.add(new TCommandEvent(cmBackendDisconnect)); | |
1502 | } | |
1503 | if (listener != null) { | |
1504 | synchronized (listener) { | |
1505 | listener.notifyAll(); | |
1506 | } | |
1507 | } | |
eb0d6c82 | 1508 | |
d4bcb88c | 1509 | // System.err.println("*** run() exiting..."); System.err.flush(); |
d36057df KL |
1510 | } |
1511 | ||
1512 | // ------------------------------------------------------------------------ | |
1513 | // ECMA48Terminal --------------------------------------------------------- | |
1514 | // ------------------------------------------------------------------------ | |
1515 | ||
a69ed767 KL |
1516 | /** |
1517 | * Get the width of a character cell in pixels. | |
1518 | * | |
1519 | * @return the width in pixels of a character cell | |
1520 | */ | |
1521 | public int getTextWidth() { | |
1522 | return (widthPixels / sessionInfo.getWindowWidth()); | |
1523 | } | |
1524 | ||
1525 | /** | |
1526 | * Get the height of a character cell in pixels. | |
1527 | * | |
1528 | * @return the height in pixels of a character cell | |
1529 | */ | |
1530 | public int getTextHeight() { | |
1531 | return (heightPixels / sessionInfo.getWindowHeight()); | |
1532 | } | |
1533 | ||
d36057df KL |
1534 | /** |
1535 | * Getter for sessionInfo. | |
1536 | * | |
1537 | * @return the SessionInfo | |
1538 | */ | |
1539 | public SessionInfo getSessionInfo() { | |
1540 | return sessionInfo; | |
1541 | } | |
1542 | ||
1543 | /** | |
1544 | * Get the output writer. | |
1545 | * | |
1546 | * @return the Writer | |
1547 | */ | |
1548 | public PrintWriter getOutput() { | |
1549 | return output; | |
1550 | } | |
1551 | ||
1552 | /** | |
1553 | * Call 'stty' to set cooked mode. | |
1554 | * | |
1555 | * <p>Actually executes '/bin/sh -c stty sane cooked < /dev/tty' | |
1556 | */ | |
1557 | private void sttyCooked() { | |
1558 | doStty(false); | |
1559 | } | |
1560 | ||
1561 | /** | |
1562 | * Call 'stty' to set raw mode. | |
1563 | * | |
1564 | * <p>Actually executes '/bin/sh -c stty -ignbrk -brkint -parmrk -istrip | |
1565 | * -inlcr -igncr -icrnl -ixon -opost -echo -echonl -icanon -isig -iexten | |
1566 | * -parenb cs8 min 1 < /dev/tty' | |
1567 | */ | |
1568 | private void sttyRaw() { | |
1569 | doStty(true); | |
1570 | } | |
1571 | ||
1572 | /** | |
1573 | * Call 'stty' to set raw or cooked mode. | |
1574 | * | |
1575 | * @param mode if true, set raw mode, otherwise set cooked mode | |
1576 | */ | |
1577 | private void doStty(final boolean mode) { | |
1578 | String [] cmdRaw = { | |
1579 | "/bin/sh", "-c", "stty -ignbrk -brkint -parmrk -istrip -inlcr -igncr -icrnl -ixon -opost -echo -echonl -icanon -isig -iexten -parenb cs8 min 1 < /dev/tty" | |
1580 | }; | |
1581 | String [] cmdCooked = { | |
1582 | "/bin/sh", "-c", "stty sane cooked < /dev/tty" | |
1583 | }; | |
1584 | try { | |
1585 | Process process; | |
1586 | if (mode) { | |
1587 | process = Runtime.getRuntime().exec(cmdRaw); | |
1588 | } else { | |
1589 | process = Runtime.getRuntime().exec(cmdCooked); | |
1590 | } | |
1591 | BufferedReader in = new BufferedReader(new InputStreamReader(process.getInputStream(), "UTF-8")); | |
1592 | String line = in.readLine(); | |
1593 | if ((line != null) && (line.length() > 0)) { | |
1594 | System.err.println("WEIRD?! Normal output from stty: " + line); | |
1595 | } | |
1596 | while (true) { | |
1597 | BufferedReader err = new BufferedReader(new InputStreamReader(process.getErrorStream(), "UTF-8")); | |
1598 | line = err.readLine(); | |
1599 | if ((line != null) && (line.length() > 0)) { | |
1600 | System.err.println("Error output from stty: " + line); | |
1601 | } | |
1602 | try { | |
1603 | process.waitFor(); | |
1604 | break; | |
1605 | } catch (InterruptedException e) { | |
a69ed767 KL |
1606 | if (debugToStderr) { |
1607 | e.printStackTrace(); | |
1608 | } | |
d36057df KL |
1609 | } |
1610 | } | |
1611 | int rc = process.exitValue(); | |
1612 | if (rc != 0) { | |
1613 | System.err.println("stty returned error code: " + rc); | |
1614 | } | |
1615 | } catch (IOException e) { | |
1616 | e.printStackTrace(); | |
1617 | } | |
1618 | } | |
1619 | ||
b1589621 | 1620 | /** |
7b5261bc | 1621 | * Flush output. |
b1589621 KL |
1622 | */ |
1623 | public void flush() { | |
7b5261bc | 1624 | output.flush(); |
b1589621 KL |
1625 | } |
1626 | ||
42873e30 KL |
1627 | /** |
1628 | * Perform a somewhat-optimal rendering of a line. | |
1629 | * | |
1630 | * @param y row coordinate. 0 is the top-most row. | |
1631 | * @param sb StringBuilder to write escape sequences to | |
1632 | * @param lastAttr cell attributes from the last call to flushLine | |
1633 | */ | |
1634 | private void flushLine(final int y, final StringBuilder sb, | |
1635 | CellAttributes lastAttr) { | |
1636 | ||
1637 | int lastX = -1; | |
1638 | int textEnd = 0; | |
1639 | for (int x = 0; x < width; x++) { | |
1640 | Cell lCell = logical[x][y]; | |
1641 | if (!lCell.isBlank()) { | |
1642 | textEnd = x; | |
1643 | } | |
1644 | } | |
1645 | // Push textEnd to first column beyond the text area | |
1646 | textEnd++; | |
1647 | ||
1648 | // DEBUG | |
1649 | // reallyCleared = true; | |
1650 | ||
a69ed767 KL |
1651 | boolean hasImage = false; |
1652 | ||
42873e30 KL |
1653 | for (int x = 0; x < width; x++) { |
1654 | Cell lCell = logical[x][y]; | |
1655 | Cell pCell = physical[x][y]; | |
1656 | ||
1657 | if (!lCell.equals(pCell) || reallyCleared) { | |
1658 | ||
1659 | if (debugToStderr) { | |
1660 | System.err.printf("\n--\n"); | |
1661 | System.err.printf(" Y: %d X: %d\n", y, x); | |
1662 | System.err.printf(" lCell: %s\n", lCell); | |
1663 | System.err.printf(" pCell: %s\n", pCell); | |
1664 | System.err.printf(" ==== \n"); | |
1665 | } | |
1666 | ||
1667 | if (lastAttr == null) { | |
1668 | lastAttr = new CellAttributes(); | |
1669 | sb.append(normal()); | |
1670 | } | |
1671 | ||
1672 | // Place the cell | |
1673 | if ((lastX != (x - 1)) || (lastX == -1)) { | |
1674 | // Advancing at least one cell, or the first gotoXY | |
1675 | sb.append(gotoXY(x, y)); | |
1676 | } | |
1677 | ||
1678 | assert (lastAttr != null); | |
1679 | ||
1680 | if ((x == textEnd) && (textEnd < width - 1)) { | |
1681 | assert (lCell.isBlank()); | |
1682 | ||
1683 | for (int i = x; i < width; i++) { | |
1684 | assert (logical[i][y].isBlank()); | |
1685 | // Physical is always updated | |
1686 | physical[i][y].reset(); | |
1687 | } | |
1688 | ||
1689 | // Clear remaining line | |
1690 | sb.append(clearRemainingLine()); | |
1691 | lastAttr.reset(); | |
1692 | return; | |
1693 | } | |
1694 | ||
a69ed767 KL |
1695 | // Image cell: bypass the rest of the loop, it is not |
1696 | // rendered here. | |
1697 | if (lCell.isImage()) { | |
1698 | hasImage = true; | |
1699 | ||
1700 | // Save the last rendered cell | |
1701 | lastX = x; | |
1702 | ||
1703 | // Physical is always updated | |
1704 | physical[x][y].setTo(lCell); | |
1705 | continue; | |
1706 | } | |
1707 | ||
1708 | assert (!lCell.isImage()); | |
1709 | if (hasImage) { | |
1710 | hasImage = false; | |
1711 | sb.append(gotoXY(x, y)); | |
1712 | } | |
1713 | ||
42873e30 KL |
1714 | // Now emit only the modified attributes |
1715 | if ((lCell.getForeColor() != lastAttr.getForeColor()) | |
1716 | && (lCell.getBackColor() != lastAttr.getBackColor()) | |
051e2913 | 1717 | && (!lCell.isRGB()) |
42873e30 KL |
1718 | && (lCell.isBold() == lastAttr.isBold()) |
1719 | && (lCell.isReverse() == lastAttr.isReverse()) | |
1720 | && (lCell.isUnderline() == lastAttr.isUnderline()) | |
1721 | && (lCell.isBlink() == lastAttr.isBlink()) | |
1722 | ) { | |
1723 | // Both colors changed, attributes the same | |
1724 | sb.append(color(lCell.isBold(), | |
1725 | lCell.getForeColor(), lCell.getBackColor())); | |
1726 | ||
1727 | if (debugToStderr) { | |
1728 | System.err.printf("1 Change only fore/back colors\n"); | |
1729 | } | |
051e2913 KL |
1730 | |
1731 | } else if (lCell.isRGB() | |
1732 | && (lCell.getForeColorRGB() != lastAttr.getForeColorRGB()) | |
1733 | && (lCell.getBackColorRGB() != lastAttr.getBackColorRGB()) | |
1734 | && (lCell.isBold() == lastAttr.isBold()) | |
1735 | && (lCell.isReverse() == lastAttr.isReverse()) | |
1736 | && (lCell.isUnderline() == lastAttr.isUnderline()) | |
1737 | && (lCell.isBlink() == lastAttr.isBlink()) | |
1738 | ) { | |
1739 | // Both colors changed, attributes the same | |
1740 | sb.append(colorRGB(lCell.getForeColorRGB(), | |
1741 | lCell.getBackColorRGB())); | |
1742 | ||
1743 | if (debugToStderr) { | |
1744 | System.err.printf("1 Change only fore/back colors (RGB)\n"); | |
1745 | } | |
42873e30 KL |
1746 | } else if ((lCell.getForeColor() != lastAttr.getForeColor()) |
1747 | && (lCell.getBackColor() != lastAttr.getBackColor()) | |
051e2913 | 1748 | && (!lCell.isRGB()) |
42873e30 KL |
1749 | && (lCell.isBold() != lastAttr.isBold()) |
1750 | && (lCell.isReverse() != lastAttr.isReverse()) | |
1751 | && (lCell.isUnderline() != lastAttr.isUnderline()) | |
1752 | && (lCell.isBlink() != lastAttr.isBlink()) | |
1753 | ) { | |
1754 | // Everything is different | |
1755 | sb.append(color(lCell.getForeColor(), | |
1756 | lCell.getBackColor(), | |
1757 | lCell.isBold(), lCell.isReverse(), | |
1758 | lCell.isBlink(), | |
1759 | lCell.isUnderline())); | |
1760 | ||
1761 | if (debugToStderr) { | |
1762 | System.err.printf("2 Set all attributes\n"); | |
1763 | } | |
1764 | } else if ((lCell.getForeColor() != lastAttr.getForeColor()) | |
1765 | && (lCell.getBackColor() == lastAttr.getBackColor()) | |
051e2913 | 1766 | && (!lCell.isRGB()) |
42873e30 KL |
1767 | && (lCell.isBold() == lastAttr.isBold()) |
1768 | && (lCell.isReverse() == lastAttr.isReverse()) | |
1769 | && (lCell.isUnderline() == lastAttr.isUnderline()) | |
1770 | && (lCell.isBlink() == lastAttr.isBlink()) | |
1771 | ) { | |
1772 | ||
1773 | // Attributes same, foreColor different | |
1774 | sb.append(color(lCell.isBold(), | |
1775 | lCell.getForeColor(), true)); | |
1776 | ||
1777 | if (debugToStderr) { | |
1778 | System.err.printf("3 Change foreColor\n"); | |
1779 | } | |
051e2913 KL |
1780 | } else if (lCell.isRGB() |
1781 | && (lCell.getForeColorRGB() != lastAttr.getForeColorRGB()) | |
1782 | && (lCell.getBackColorRGB() == lastAttr.getBackColorRGB()) | |
1783 | && (lCell.getForeColorRGB() >= 0) | |
1784 | && (lCell.getBackColorRGB() >= 0) | |
1785 | && (lCell.isBold() == lastAttr.isBold()) | |
1786 | && (lCell.isReverse() == lastAttr.isReverse()) | |
1787 | && (lCell.isUnderline() == lastAttr.isUnderline()) | |
1788 | && (lCell.isBlink() == lastAttr.isBlink()) | |
1789 | ) { | |
1790 | // Attributes same, foreColor different | |
1791 | sb.append(colorRGB(lCell.getForeColorRGB(), true)); | |
1792 | ||
1793 | if (debugToStderr) { | |
1794 | System.err.printf("3 Change foreColor (RGB)\n"); | |
1795 | } | |
42873e30 KL |
1796 | } else if ((lCell.getForeColor() == lastAttr.getForeColor()) |
1797 | && (lCell.getBackColor() != lastAttr.getBackColor()) | |
051e2913 | 1798 | && (!lCell.isRGB()) |
42873e30 KL |
1799 | && (lCell.isBold() == lastAttr.isBold()) |
1800 | && (lCell.isReverse() == lastAttr.isReverse()) | |
1801 | && (lCell.isUnderline() == lastAttr.isUnderline()) | |
1802 | && (lCell.isBlink() == lastAttr.isBlink()) | |
1803 | ) { | |
1804 | // Attributes same, backColor different | |
1805 | sb.append(color(lCell.isBold(), | |
1806 | lCell.getBackColor(), false)); | |
1807 | ||
1808 | if (debugToStderr) { | |
1809 | System.err.printf("4 Change backColor\n"); | |
1810 | } | |
051e2913 KL |
1811 | } else if (lCell.isRGB() |
1812 | && (lCell.getForeColorRGB() == lastAttr.getForeColorRGB()) | |
1813 | && (lCell.getBackColorRGB() != lastAttr.getBackColorRGB()) | |
1814 | && (lCell.isBold() == lastAttr.isBold()) | |
1815 | && (lCell.isReverse() == lastAttr.isReverse()) | |
1816 | && (lCell.isUnderline() == lastAttr.isUnderline()) | |
1817 | && (lCell.isBlink() == lastAttr.isBlink()) | |
1818 | ) { | |
1819 | // Attributes same, foreColor different | |
1820 | sb.append(colorRGB(lCell.getBackColorRGB(), false)); | |
1821 | ||
1822 | if (debugToStderr) { | |
1823 | System.err.printf("4 Change backColor (RGB)\n"); | |
1824 | } | |
42873e30 KL |
1825 | } else if ((lCell.getForeColor() == lastAttr.getForeColor()) |
1826 | && (lCell.getBackColor() == lastAttr.getBackColor()) | |
051e2913 KL |
1827 | && (lCell.getForeColorRGB() == lastAttr.getForeColorRGB()) |
1828 | && (lCell.getBackColorRGB() == lastAttr.getBackColorRGB()) | |
42873e30 KL |
1829 | && (lCell.isBold() == lastAttr.isBold()) |
1830 | && (lCell.isReverse() == lastAttr.isReverse()) | |
1831 | && (lCell.isUnderline() == lastAttr.isUnderline()) | |
1832 | && (lCell.isBlink() == lastAttr.isBlink()) | |
1833 | ) { | |
1834 | ||
1835 | // All attributes the same, just print the char | |
1836 | // NOP | |
1837 | ||
1838 | if (debugToStderr) { | |
1839 | System.err.printf("5 Only emit character\n"); | |
1840 | } | |
1841 | } else { | |
1842 | // Just reset everything again | |
051e2913 KL |
1843 | if (!lCell.isRGB()) { |
1844 | sb.append(color(lCell.getForeColor(), | |
1845 | lCell.getBackColor(), | |
1846 | lCell.isBold(), | |
1847 | lCell.isReverse(), | |
1848 | lCell.isBlink(), | |
1849 | lCell.isUnderline())); | |
1850 | ||
1851 | if (debugToStderr) { | |
1852 | System.err.printf("6 Change all attributes\n"); | |
1853 | } | |
1854 | } else { | |
1855 | sb.append(colorRGB(lCell.getForeColorRGB(), | |
1856 | lCell.getBackColorRGB(), | |
1857 | lCell.isBold(), | |
1858 | lCell.isReverse(), | |
1859 | lCell.isBlink(), | |
1860 | lCell.isUnderline())); | |
1861 | if (debugToStderr) { | |
1862 | System.err.printf("6 Change all attributes (RGB)\n"); | |
1863 | } | |
42873e30 | 1864 | } |
051e2913 | 1865 | |
42873e30 KL |
1866 | } |
1867 | // Emit the character | |
1868 | sb.append(lCell.getChar()); | |
1869 | ||
1870 | // Save the last rendered cell | |
1871 | lastX = x; | |
1872 | lastAttr.setTo(lCell); | |
1873 | ||
1874 | // Physical is always updated | |
1875 | physical[x][y].setTo(lCell); | |
1876 | ||
1877 | } // if (!lCell.equals(pCell) || (reallyCleared == true)) | |
1878 | ||
1879 | } // for (int x = 0; x < width; x++) | |
1880 | } | |
1881 | ||
1882 | /** | |
1883 | * Render the screen to a string that can be emitted to something that | |
1884 | * knows how to process ECMA-48/ANSI X3.64 escape sequences. | |
1885 | * | |
a69ed767 | 1886 | * @param sb StringBuilder to write escape sequences to |
42873e30 KL |
1887 | * @return escape sequences string that provides the updates to the |
1888 | * physical screen | |
1889 | */ | |
a69ed767 | 1890 | private String flushString(final StringBuilder sb) { |
42873e30 KL |
1891 | CellAttributes attr = null; |
1892 | ||
42873e30 KL |
1893 | if (reallyCleared) { |
1894 | attr = new CellAttributes(); | |
1895 | sb.append(clearAll()); | |
1896 | } | |
1897 | ||
a69ed767 KL |
1898 | /* |
1899 | * For sixel support, draw all of the sixel output first, and then | |
1900 | * draw everything else afterwards. This works OK, but performance | |
1901 | * is still a drag on larger pictures. | |
1902 | */ | |
1903 | for (int y = 0; y < height; y++) { | |
1904 | for (int x = 0; x < width; x++) { | |
1905 | // If physical had non-image data that is now image data, the | |
1906 | // entire row must be redrawn. | |
1907 | Cell lCell = logical[x][y]; | |
1908 | Cell pCell = physical[x][y]; | |
1909 | if (lCell.isImage() && !pCell.isImage()) { | |
1910 | unsetImageRow(y); | |
1911 | break; | |
1912 | } | |
1913 | } | |
1914 | } | |
1915 | for (int y = 0; y < height; y++) { | |
1916 | for (int x = 0; x < width; x++) { | |
1917 | Cell lCell = logical[x][y]; | |
1918 | Cell pCell = physical[x][y]; | |
1919 | ||
1920 | if (!lCell.isImage()) { | |
1921 | continue; | |
1922 | } | |
1923 | ||
1924 | int left = x; | |
1925 | int right = x; | |
1926 | while ((right < width) | |
1927 | && (logical[right][y].isImage()) | |
1928 | && (!logical[right][y].equals(physical[right][y]) | |
1929 | || reallyCleared) | |
1930 | ) { | |
1931 | right++; | |
1932 | } | |
1933 | ArrayList<Cell> cellsToDraw = new ArrayList<Cell>(); | |
1934 | for (int i = 0; i < (right - x); i++) { | |
1935 | assert (logical[x + i][y].isImage()); | |
1936 | cellsToDraw.add(logical[x + i][y]); | |
1937 | ||
1938 | // Physical is always updated. | |
1939 | physical[x + i][y].setTo(lCell); | |
1940 | } | |
1941 | if (cellsToDraw.size() > 0) { | |
1942 | sb.append(toSixel(x, y, cellsToDraw)); | |
1943 | } | |
1944 | ||
1945 | x = right; | |
1946 | } | |
1947 | } | |
1948 | ||
1949 | // Draw the text part now. | |
42873e30 KL |
1950 | for (int y = 0; y < height; y++) { |
1951 | flushLine(y, sb, attr); | |
1952 | } | |
1953 | ||
42873e30 KL |
1954 | reallyCleared = false; |
1955 | ||
1956 | String result = sb.toString(); | |
1957 | if (debugToStderr) { | |
1958 | System.err.printf("flushString(): %s\n", result); | |
1959 | } | |
1960 | return result; | |
1961 | } | |
1962 | ||
b1589621 | 1963 | /** |
7b5261bc | 1964 | * Reset keyboard/mouse input parser. |
b1589621 | 1965 | */ |
42873e30 | 1966 | private void resetParser() { |
7b5261bc KL |
1967 | state = ParseState.GROUND; |
1968 | params = new ArrayList<String>(); | |
7b5261bc KL |
1969 | params.clear(); |
1970 | params.add(""); | |
b1589621 KL |
1971 | } |
1972 | ||
1973 | /** | |
1974 | * Produce a control character or one of the special ones (ENTER, TAB, | |
7b5261bc | 1975 | * etc.). |
b1589621 KL |
1976 | * |
1977 | * @param ch Unicode code point | |
b299e69c | 1978 | * @param alt if true, set alt on the TKeypress |
7b5261bc | 1979 | * @return one TKeypress event, either a control character (e.g. isKey == |
b1589621 KL |
1980 | * false, ch == 'A', ctrl == true), or a special key (e.g. isKey == true, |
1981 | * fnKey == ESC) | |
1982 | */ | |
b299e69c | 1983 | private TKeypressEvent controlChar(final char ch, final boolean alt) { |
7b5261bc KL |
1984 | // System.err.printf("controlChar: %02x\n", ch); |
1985 | ||
1986 | switch (ch) { | |
1987 | case 0x0D: | |
1988 | // Carriage return --> ENTER | |
b299e69c | 1989 | return new TKeypressEvent(kbEnter, alt, false, false); |
7b5261bc KL |
1990 | case 0x0A: |
1991 | // Linefeed --> ENTER | |
b299e69c | 1992 | return new TKeypressEvent(kbEnter, alt, false, false); |
7b5261bc KL |
1993 | case 0x1B: |
1994 | // ESC | |
b299e69c | 1995 | return new TKeypressEvent(kbEsc, alt, false, false); |
7b5261bc KL |
1996 | case '\t': |
1997 | // TAB | |
b299e69c | 1998 | return new TKeypressEvent(kbTab, alt, false, false); |
7b5261bc KL |
1999 | default: |
2000 | // Make all other control characters come back as the alphabetic | |
2001 | // character with the ctrl field set. So SOH would be 'A' + | |
2002 | // ctrl. | |
b299e69c KL |
2003 | return new TKeypressEvent(false, 0, (char)(ch + 0x40), |
2004 | alt, true, false); | |
7b5261bc | 2005 | } |
b1589621 KL |
2006 | } |
2007 | ||
2008 | /** | |
2009 | * Produce special key from CSI Pn ; Pm ; ... ~ | |
2010 | * | |
2011 | * @return one KEYPRESS event representing a special key | |
2012 | */ | |
2013 | private TInputEvent csiFnKey() { | |
7b5261bc | 2014 | int key = 0; |
7b5261bc KL |
2015 | if (params.size() > 0) { |
2016 | key = Integer.parseInt(params.get(0)); | |
2017 | } | |
b299e69c KL |
2018 | boolean alt = false; |
2019 | boolean ctrl = false; | |
2020 | boolean shift = false; | |
32437017 KL |
2021 | if (params.size() > 1) { |
2022 | shift = csiIsShift(params.get(1)); | |
2023 | alt = csiIsAlt(params.get(1)); | |
2024 | ctrl = csiIsCtrl(params.get(1)); | |
b299e69c | 2025 | } |
d4a29741 | 2026 | |
b299e69c KL |
2027 | switch (key) { |
2028 | case 1: | |
2029 | return new TKeypressEvent(kbHome, alt, ctrl, shift); | |
2030 | case 2: | |
2031 | return new TKeypressEvent(kbIns, alt, ctrl, shift); | |
2032 | case 3: | |
2033 | return new TKeypressEvent(kbDel, alt, ctrl, shift); | |
2034 | case 4: | |
2035 | return new TKeypressEvent(kbEnd, alt, ctrl, shift); | |
2036 | case 5: | |
2037 | return new TKeypressEvent(kbPgUp, alt, ctrl, shift); | |
2038 | case 6: | |
2039 | return new TKeypressEvent(kbPgDn, alt, ctrl, shift); | |
2040 | case 15: | |
2041 | return new TKeypressEvent(kbF5, alt, ctrl, shift); | |
2042 | case 17: | |
2043 | return new TKeypressEvent(kbF6, alt, ctrl, shift); | |
2044 | case 18: | |
2045 | return new TKeypressEvent(kbF7, alt, ctrl, shift); | |
2046 | case 19: | |
2047 | return new TKeypressEvent(kbF8, alt, ctrl, shift); | |
2048 | case 20: | |
2049 | return new TKeypressEvent(kbF9, alt, ctrl, shift); | |
2050 | case 21: | |
2051 | return new TKeypressEvent(kbF10, alt, ctrl, shift); | |
2052 | case 23: | |
2053 | return new TKeypressEvent(kbF11, alt, ctrl, shift); | |
2054 | case 24: | |
2055 | return new TKeypressEvent(kbF12, alt, ctrl, shift); | |
7b5261bc KL |
2056 | default: |
2057 | // Unknown | |
2058 | return null; | |
2059 | } | |
b1589621 KL |
2060 | } |
2061 | ||
2062 | /** | |
2063 | * Produce mouse events based on "Any event tracking" and UTF-8 | |
2064 | * coordinates. See | |
2065 | * http://invisible-island.net/xterm/ctlseqs/ctlseqs.html#Mouse%20Tracking | |
2066 | * | |
2067 | * @return a MOUSE_MOTION, MOUSE_UP, or MOUSE_DOWN event | |
2068 | */ | |
2069 | private TInputEvent parseMouse() { | |
7b5261bc KL |
2070 | int buttons = params.get(0).charAt(0) - 32; |
2071 | int x = params.get(0).charAt(1) - 32 - 1; | |
2072 | int y = params.get(0).charAt(2) - 32 - 1; | |
2073 | ||
2074 | // Clamp X and Y to the physical screen coordinates. | |
2075 | if (x >= windowResize.getWidth()) { | |
2076 | x = windowResize.getWidth() - 1; | |
2077 | } | |
2078 | if (y >= windowResize.getHeight()) { | |
2079 | y = windowResize.getHeight() - 1; | |
2080 | } | |
2081 | ||
d4a29741 KL |
2082 | TMouseEvent.Type eventType = TMouseEvent.Type.MOUSE_DOWN; |
2083 | boolean eventMouse1 = false; | |
2084 | boolean eventMouse2 = false; | |
2085 | boolean eventMouse3 = false; | |
2086 | boolean eventMouseWheelUp = false; | |
2087 | boolean eventMouseWheelDown = false; | |
7b5261bc KL |
2088 | |
2089 | // System.err.printf("buttons: %04x\r\n", buttons); | |
2090 | ||
2091 | switch (buttons) { | |
2092 | case 0: | |
d4a29741 | 2093 | eventMouse1 = true; |
7b5261bc KL |
2094 | mouse1 = true; |
2095 | break; | |
2096 | case 1: | |
d4a29741 | 2097 | eventMouse2 = true; |
7b5261bc KL |
2098 | mouse2 = true; |
2099 | break; | |
2100 | case 2: | |
d4a29741 | 2101 | eventMouse3 = true; |
7b5261bc KL |
2102 | mouse3 = true; |
2103 | break; | |
2104 | case 3: | |
2105 | // Release or Move | |
2106 | if (!mouse1 && !mouse2 && !mouse3) { | |
d4a29741 | 2107 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
7b5261bc | 2108 | } else { |
d4a29741 | 2109 | eventType = TMouseEvent.Type.MOUSE_UP; |
7b5261bc KL |
2110 | } |
2111 | if (mouse1) { | |
2112 | mouse1 = false; | |
d4a29741 | 2113 | eventMouse1 = true; |
7b5261bc KL |
2114 | } |
2115 | if (mouse2) { | |
2116 | mouse2 = false; | |
d4a29741 | 2117 | eventMouse2 = true; |
7b5261bc KL |
2118 | } |
2119 | if (mouse3) { | |
2120 | mouse3 = false; | |
d4a29741 | 2121 | eventMouse3 = true; |
7b5261bc KL |
2122 | } |
2123 | break; | |
2124 | ||
2125 | case 32: | |
2126 | // Dragging with mouse1 down | |
d4a29741 | 2127 | eventMouse1 = true; |
7b5261bc | 2128 | mouse1 = true; |
d4a29741 | 2129 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
7b5261bc KL |
2130 | break; |
2131 | ||
2132 | case 33: | |
2133 | // Dragging with mouse2 down | |
d4a29741 | 2134 | eventMouse2 = true; |
7b5261bc | 2135 | mouse2 = true; |
d4a29741 | 2136 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
7b5261bc KL |
2137 | break; |
2138 | ||
2139 | case 34: | |
2140 | // Dragging with mouse3 down | |
d4a29741 | 2141 | eventMouse3 = true; |
7b5261bc | 2142 | mouse3 = true; |
d4a29741 | 2143 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
7b5261bc KL |
2144 | break; |
2145 | ||
2146 | case 96: | |
2147 | // Dragging with mouse2 down after wheelUp | |
d4a29741 | 2148 | eventMouse2 = true; |
7b5261bc | 2149 | mouse2 = true; |
d4a29741 | 2150 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
7b5261bc KL |
2151 | break; |
2152 | ||
2153 | case 97: | |
2154 | // Dragging with mouse2 down after wheelDown | |
d4a29741 | 2155 | eventMouse2 = true; |
7b5261bc | 2156 | mouse2 = true; |
d4a29741 | 2157 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
7b5261bc KL |
2158 | break; |
2159 | ||
2160 | case 64: | |
d4a29741 | 2161 | eventMouseWheelUp = true; |
7b5261bc KL |
2162 | break; |
2163 | ||
2164 | case 65: | |
d4a29741 | 2165 | eventMouseWheelDown = true; |
7b5261bc KL |
2166 | break; |
2167 | ||
2168 | default: | |
2169 | // Unknown, just make it motion | |
d4a29741 | 2170 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
7b5261bc KL |
2171 | break; |
2172 | } | |
d4a29741 KL |
2173 | return new TMouseEvent(eventType, x, y, x, y, |
2174 | eventMouse1, eventMouse2, eventMouse3, | |
2175 | eventMouseWheelUp, eventMouseWheelDown); | |
b1589621 KL |
2176 | } |
2177 | ||
b5f2a6db KL |
2178 | /** |
2179 | * Produce mouse events based on "Any event tracking" and SGR | |
2180 | * coordinates. See | |
2181 | * http://invisible-island.net/xterm/ctlseqs/ctlseqs.html#Mouse%20Tracking | |
2182 | * | |
2183 | * @param release if true, this was a release ('m') | |
2184 | * @return a MOUSE_MOTION, MOUSE_UP, or MOUSE_DOWN event | |
2185 | */ | |
2186 | private TInputEvent parseMouseSGR(final boolean release) { | |
2187 | // SGR extended coordinates - mode 1006 | |
2188 | if (params.size() < 3) { | |
2189 | // Invalid position, bail out. | |
2190 | return null; | |
2191 | } | |
2192 | int buttons = Integer.parseInt(params.get(0)); | |
2193 | int x = Integer.parseInt(params.get(1)) - 1; | |
2194 | int y = Integer.parseInt(params.get(2)) - 1; | |
2195 | ||
2196 | // Clamp X and Y to the physical screen coordinates. | |
2197 | if (x >= windowResize.getWidth()) { | |
2198 | x = windowResize.getWidth() - 1; | |
2199 | } | |
2200 | if (y >= windowResize.getHeight()) { | |
2201 | y = windowResize.getHeight() - 1; | |
2202 | } | |
2203 | ||
2204 | TMouseEvent.Type eventType = TMouseEvent.Type.MOUSE_DOWN; | |
2205 | boolean eventMouse1 = false; | |
2206 | boolean eventMouse2 = false; | |
2207 | boolean eventMouse3 = false; | |
2208 | boolean eventMouseWheelUp = false; | |
2209 | boolean eventMouseWheelDown = false; | |
2210 | ||
2211 | if (release) { | |
2212 | eventType = TMouseEvent.Type.MOUSE_UP; | |
2213 | } | |
2214 | ||
2215 | switch (buttons) { | |
2216 | case 0: | |
2217 | eventMouse1 = true; | |
2218 | break; | |
2219 | case 1: | |
2220 | eventMouse2 = true; | |
2221 | break; | |
2222 | case 2: | |
2223 | eventMouse3 = true; | |
2224 | break; | |
2225 | case 35: | |
2226 | // Motion only, no buttons down | |
2227 | eventType = TMouseEvent.Type.MOUSE_MOTION; | |
2228 | break; | |
2229 | ||
2230 | case 32: | |
2231 | // Dragging with mouse1 down | |
2232 | eventMouse1 = true; | |
2233 | eventType = TMouseEvent.Type.MOUSE_MOTION; | |
2234 | break; | |
2235 | ||
2236 | case 33: | |
2237 | // Dragging with mouse2 down | |
2238 | eventMouse2 = true; | |
2239 | eventType = TMouseEvent.Type.MOUSE_MOTION; | |
2240 | break; | |
2241 | ||
2242 | case 34: | |
2243 | // Dragging with mouse3 down | |
2244 | eventMouse3 = true; | |
2245 | eventType = TMouseEvent.Type.MOUSE_MOTION; | |
2246 | break; | |
2247 | ||
2248 | case 96: | |
2249 | // Dragging with mouse2 down after wheelUp | |
2250 | eventMouse2 = true; | |
2251 | eventType = TMouseEvent.Type.MOUSE_MOTION; | |
2252 | break; | |
2253 | ||
2254 | case 97: | |
2255 | // Dragging with mouse2 down after wheelDown | |
2256 | eventMouse2 = true; | |
2257 | eventType = TMouseEvent.Type.MOUSE_MOTION; | |
2258 | break; | |
2259 | ||
2260 | case 64: | |
2261 | eventMouseWheelUp = true; | |
2262 | break; | |
2263 | ||
2264 | case 65: | |
2265 | eventMouseWheelDown = true; | |
2266 | break; | |
2267 | ||
2268 | default: | |
2269 | // Unknown, bail out | |
2270 | return null; | |
2271 | } | |
2272 | return new TMouseEvent(eventType, x, y, x, y, | |
2273 | eventMouse1, eventMouse2, eventMouse3, | |
2274 | eventMouseWheelUp, eventMouseWheelDown); | |
2275 | } | |
2276 | ||
05dbb28d | 2277 | /** |
623a1bd1 | 2278 | * Return any events in the IO queue due to timeout. |
b1589621 | 2279 | * |
623a1bd1 | 2280 | * @param queue list to append new events to |
b1589621 | 2281 | */ |
a83fea2b | 2282 | private void getIdleEvents(final List<TInputEvent> queue) { |
be72cb5c | 2283 | long nowTime = System.currentTimeMillis(); |
7b5261bc KL |
2284 | |
2285 | // Check for new window size | |
be72cb5c | 2286 | long windowSizeDelay = nowTime - windowSizeTime; |
a83fea2b | 2287 | if (windowSizeDelay > 1000) { |
9696a8f6 KL |
2288 | int oldTextWidth = getTextWidth(); |
2289 | int oldTextHeight = getTextHeight(); | |
2290 | ||
a83fea2b KL |
2291 | sessionInfo.queryWindowSize(); |
2292 | int newWidth = sessionInfo.getWindowWidth(); | |
2293 | int newHeight = sessionInfo.getWindowHeight(); | |
85c07c5e | 2294 | |
a83fea2b KL |
2295 | if ((newWidth != windowResize.getWidth()) |
2296 | || (newHeight != windowResize.getHeight()) | |
2297 | ) { | |
85c07c5e | 2298 | |
9696a8f6 KL |
2299 | // Request xterm report window dimensions in pixels again. |
2300 | // Between now and then, ensure that the reported text cell | |
2301 | // size is the same by setting widthPixels and heightPixels | |
2302 | // to match the new dimensions. | |
2303 | widthPixels = oldTextWidth * newWidth; | |
2304 | heightPixels = oldTextHeight * newHeight; | |
2305 | ||
85c07c5e KL |
2306 | if (debugToStderr) { |
2307 | System.err.println("Screen size changed, old size " + | |
2308 | windowResize); | |
2309 | System.err.println(" new size " + | |
2310 | newWidth + " x " + newHeight); | |
9696a8f6 KL |
2311 | System.err.println(" old pixels " + |
2312 | oldTextWidth + " x " + oldTextHeight); | |
2313 | System.err.println(" new pixels " + | |
2314 | getTextWidth() + " x " + getTextHeight()); | |
85c07c5e KL |
2315 | } |
2316 | ||
a69ed767 KL |
2317 | this.output.printf("%s", xtermReportWindowPixelDimensions()); |
2318 | this.output.flush(); | |
2319 | ||
a83fea2b KL |
2320 | TResizeEvent event = new TResizeEvent(TResizeEvent.Type.SCREEN, |
2321 | newWidth, newHeight); | |
2322 | windowResize = new TResizeEvent(TResizeEvent.Type.SCREEN, | |
2323 | newWidth, newHeight); | |
2324 | queue.add(event); | |
7b5261bc | 2325 | } |
be72cb5c | 2326 | windowSizeTime = nowTime; |
7b5261bc KL |
2327 | } |
2328 | ||
a83fea2b KL |
2329 | // ESCDELAY type timeout |
2330 | if (state == ParseState.ESCAPE) { | |
be72cb5c | 2331 | long escDelay = nowTime - escapeTime; |
a83fea2b KL |
2332 | if (escDelay > 100) { |
2333 | // After 0.1 seconds, assume a true escape character | |
2334 | queue.add(controlChar((char)0x1B, false)); | |
42873e30 | 2335 | resetParser(); |
7b5261bc KL |
2336 | } |
2337 | } | |
b1589621 KL |
2338 | } |
2339 | ||
32437017 KL |
2340 | /** |
2341 | * Returns true if the CSI parameter for a keyboard command means that | |
2342 | * shift was down. | |
2343 | */ | |
2344 | private boolean csiIsShift(final String x) { | |
2345 | if ((x.equals("2")) | |
2346 | || (x.equals("4")) | |
2347 | || (x.equals("6")) | |
2348 | || (x.equals("8")) | |
2349 | ) { | |
2350 | return true; | |
2351 | } | |
2352 | return false; | |
2353 | } | |
2354 | ||
2355 | /** | |
2356 | * Returns true if the CSI parameter for a keyboard command means that | |
2357 | * alt was down. | |
2358 | */ | |
2359 | private boolean csiIsAlt(final String x) { | |
2360 | if ((x.equals("3")) | |
2361 | || (x.equals("4")) | |
2362 | || (x.equals("7")) | |
2363 | || (x.equals("8")) | |
2364 | ) { | |
2365 | return true; | |
2366 | } | |
2367 | return false; | |
2368 | } | |
2369 | ||
2370 | /** | |
2371 | * Returns true if the CSI parameter for a keyboard command means that | |
2372 | * ctrl was down. | |
2373 | */ | |
2374 | private boolean csiIsCtrl(final String x) { | |
2375 | if ((x.equals("5")) | |
2376 | || (x.equals("6")) | |
2377 | || (x.equals("7")) | |
2378 | || (x.equals("8")) | |
2379 | ) { | |
2380 | return true; | |
2381 | } | |
2382 | return false; | |
2383 | } | |
2384 | ||
b1589621 KL |
2385 | /** |
2386 | * Parses the next character of input to see if an InputEvent is | |
2387 | * fully here. | |
2388 | * | |
623a1bd1 | 2389 | * @param events list to append new events to |
05dbb28d | 2390 | * @param ch Unicode code point |
b1589621 | 2391 | */ |
7b5261bc KL |
2392 | private void processChar(final List<TInputEvent> events, final char ch) { |
2393 | ||
7b5261bc | 2394 | // ESCDELAY type timeout |
be72cb5c | 2395 | long nowTime = System.currentTimeMillis(); |
7b5261bc | 2396 | if (state == ParseState.ESCAPE) { |
be72cb5c | 2397 | long escDelay = nowTime - escapeTime; |
7b5261bc KL |
2398 | if (escDelay > 250) { |
2399 | // After 0.25 seconds, assume a true escape character | |
b299e69c | 2400 | events.add(controlChar((char)0x1B, false)); |
42873e30 | 2401 | resetParser(); |
7b5261bc KL |
2402 | } |
2403 | } | |
2404 | ||
b299e69c KL |
2405 | // TKeypress fields |
2406 | boolean ctrl = false; | |
2407 | boolean alt = false; | |
2408 | boolean shift = false; | |
b299e69c | 2409 | |
7b5261bc KL |
2410 | // System.err.printf("state: %s ch %c\r\n", state, ch); |
2411 | ||
2412 | switch (state) { | |
2413 | case GROUND: | |
2414 | ||
2415 | if (ch == 0x1B) { | |
2416 | state = ParseState.ESCAPE; | |
be72cb5c | 2417 | escapeTime = nowTime; |
7b5261bc KL |
2418 | return; |
2419 | } | |
2420 | ||
2421 | if (ch <= 0x1F) { | |
2422 | // Control character | |
b299e69c | 2423 | events.add(controlChar(ch, false)); |
42873e30 | 2424 | resetParser(); |
7b5261bc KL |
2425 | return; |
2426 | } | |
2427 | ||
2428 | if (ch >= 0x20) { | |
2429 | // Normal character | |
b299e69c KL |
2430 | events.add(new TKeypressEvent(false, 0, ch, |
2431 | false, false, false)); | |
42873e30 | 2432 | resetParser(); |
7b5261bc KL |
2433 | return; |
2434 | } | |
2435 | ||
2436 | break; | |
2437 | ||
2438 | case ESCAPE: | |
2439 | if (ch <= 0x1F) { | |
2440 | // ALT-Control character | |
b299e69c | 2441 | events.add(controlChar(ch, true)); |
42873e30 | 2442 | resetParser(); |
7b5261bc KL |
2443 | return; |
2444 | } | |
2445 | ||
2446 | if (ch == 'O') { | |
2447 | // This will be one of the function keys | |
2448 | state = ParseState.ESCAPE_INTERMEDIATE; | |
2449 | return; | |
2450 | } | |
2451 | ||
2452 | // '[' goes to CSI_ENTRY | |
2453 | if (ch == '[') { | |
2454 | state = ParseState.CSI_ENTRY; | |
2455 | return; | |
2456 | } | |
2457 | ||
2458 | // Everything else is assumed to be Alt-keystroke | |
7b5261bc | 2459 | if ((ch >= 'A') && (ch <= 'Z')) { |
b299e69c | 2460 | shift = true; |
7b5261bc | 2461 | } |
b299e69c KL |
2462 | alt = true; |
2463 | events.add(new TKeypressEvent(false, 0, ch, alt, ctrl, shift)); | |
42873e30 | 2464 | resetParser(); |
7b5261bc KL |
2465 | return; |
2466 | ||
2467 | case ESCAPE_INTERMEDIATE: | |
2468 | if ((ch >= 'P') && (ch <= 'S')) { | |
2469 | // Function key | |
7b5261bc KL |
2470 | switch (ch) { |
2471 | case 'P': | |
b299e69c | 2472 | events.add(new TKeypressEvent(kbF1)); |
7b5261bc KL |
2473 | break; |
2474 | case 'Q': | |
b299e69c | 2475 | events.add(new TKeypressEvent(kbF2)); |
7b5261bc KL |
2476 | break; |
2477 | case 'R': | |
b299e69c | 2478 | events.add(new TKeypressEvent(kbF3)); |
7b5261bc KL |
2479 | break; |
2480 | case 'S': | |
b299e69c | 2481 | events.add(new TKeypressEvent(kbF4)); |
7b5261bc KL |
2482 | break; |
2483 | default: | |
2484 | break; | |
2485 | } | |
42873e30 | 2486 | resetParser(); |
7b5261bc KL |
2487 | return; |
2488 | } | |
2489 | ||
2490 | // Unknown keystroke, ignore | |
42873e30 | 2491 | resetParser(); |
7b5261bc KL |
2492 | return; |
2493 | ||
2494 | case CSI_ENTRY: | |
2495 | // Numbers - parameter values | |
2496 | if ((ch >= '0') && (ch <= '9')) { | |
92554d64 KL |
2497 | params.set(params.size() - 1, |
2498 | params.get(params.size() - 1) + ch); | |
7b5261bc KL |
2499 | state = ParseState.CSI_PARAM; |
2500 | return; | |
2501 | } | |
2502 | // Parameter separator | |
2503 | if (ch == ';') { | |
a83fea2b | 2504 | params.add(""); |
7b5261bc KL |
2505 | return; |
2506 | } | |
2507 | ||
2508 | if ((ch >= 0x30) && (ch <= 0x7E)) { | |
2509 | switch (ch) { | |
2510 | case 'A': | |
2511 | // Up | |
b299e69c | 2512 | events.add(new TKeypressEvent(kbUp, alt, ctrl, shift)); |
42873e30 | 2513 | resetParser(); |
7b5261bc KL |
2514 | return; |
2515 | case 'B': | |
2516 | // Down | |
b299e69c | 2517 | events.add(new TKeypressEvent(kbDown, alt, ctrl, shift)); |
42873e30 | 2518 | resetParser(); |
7b5261bc KL |
2519 | return; |
2520 | case 'C': | |
2521 | // Right | |
b299e69c | 2522 | events.add(new TKeypressEvent(kbRight, alt, ctrl, shift)); |
42873e30 | 2523 | resetParser(); |
7b5261bc KL |
2524 | return; |
2525 | case 'D': | |
2526 | // Left | |
b299e69c | 2527 | events.add(new TKeypressEvent(kbLeft, alt, ctrl, shift)); |
42873e30 | 2528 | resetParser(); |
7b5261bc KL |
2529 | return; |
2530 | case 'H': | |
2531 | // Home | |
b299e69c | 2532 | events.add(new TKeypressEvent(kbHome)); |
42873e30 | 2533 | resetParser(); |
7b5261bc KL |
2534 | return; |
2535 | case 'F': | |
2536 | // End | |
b299e69c | 2537 | events.add(new TKeypressEvent(kbEnd)); |
42873e30 | 2538 | resetParser(); |
7b5261bc KL |
2539 | return; |
2540 | case 'Z': | |
2541 | // CBT - Cursor backward X tab stops (default 1) | |
b299e69c | 2542 | events.add(new TKeypressEvent(kbBackTab)); |
42873e30 | 2543 | resetParser(); |
7b5261bc KL |
2544 | return; |
2545 | case 'M': | |
2546 | // Mouse position | |
2547 | state = ParseState.MOUSE; | |
2548 | return; | |
b5f2a6db KL |
2549 | case '<': |
2550 | // Mouse position, SGR (1006) coordinates | |
2551 | state = ParseState.MOUSE_SGR; | |
2552 | return; | |
7b5261bc KL |
2553 | default: |
2554 | break; | |
2555 | } | |
2556 | } | |
2557 | ||
2558 | // Unknown keystroke, ignore | |
42873e30 | 2559 | resetParser(); |
7b5261bc KL |
2560 | return; |
2561 | ||
b5f2a6db KL |
2562 | case MOUSE_SGR: |
2563 | // Numbers - parameter values | |
2564 | if ((ch >= '0') && (ch <= '9')) { | |
2565 | params.set(params.size() - 1, | |
2566 | params.get(params.size() - 1) + ch); | |
2567 | return; | |
2568 | } | |
2569 | // Parameter separator | |
2570 | if (ch == ';') { | |
2571 | params.add(""); | |
2572 | return; | |
2573 | } | |
2574 | ||
2575 | switch (ch) { | |
2576 | case 'M': | |
2577 | // Generate a mouse press event | |
2578 | TInputEvent event = parseMouseSGR(false); | |
2579 | if (event != null) { | |
2580 | events.add(event); | |
2581 | } | |
42873e30 | 2582 | resetParser(); |
b5f2a6db KL |
2583 | return; |
2584 | case 'm': | |
2585 | // Generate a mouse release event | |
2586 | event = parseMouseSGR(true); | |
2587 | if (event != null) { | |
2588 | events.add(event); | |
2589 | } | |
42873e30 | 2590 | resetParser(); |
b5f2a6db KL |
2591 | return; |
2592 | default: | |
2593 | break; | |
2594 | } | |
2595 | ||
2596 | // Unknown keystroke, ignore | |
42873e30 | 2597 | resetParser(); |
b5f2a6db KL |
2598 | return; |
2599 | ||
7b5261bc KL |
2600 | case CSI_PARAM: |
2601 | // Numbers - parameter values | |
2602 | if ((ch >= '0') && (ch <= '9')) { | |
92554d64 KL |
2603 | params.set(params.size() - 1, |
2604 | params.get(params.size() - 1) + ch); | |
7b5261bc KL |
2605 | state = ParseState.CSI_PARAM; |
2606 | return; | |
2607 | } | |
2608 | // Parameter separator | |
2609 | if (ch == ';') { | |
92554d64 | 2610 | params.add(""); |
7b5261bc KL |
2611 | return; |
2612 | } | |
2613 | ||
2614 | if (ch == '~') { | |
2615 | events.add(csiFnKey()); | |
42873e30 | 2616 | resetParser(); |
7b5261bc KL |
2617 | return; |
2618 | } | |
2619 | ||
2620 | if ((ch >= 0x30) && (ch <= 0x7E)) { | |
2621 | switch (ch) { | |
2622 | case 'A': | |
2623 | // Up | |
7b5261bc | 2624 | if (params.size() > 1) { |
32437017 KL |
2625 | shift = csiIsShift(params.get(1)); |
2626 | alt = csiIsAlt(params.get(1)); | |
2627 | ctrl = csiIsCtrl(params.get(1)); | |
7b5261bc | 2628 | } |
b299e69c | 2629 | events.add(new TKeypressEvent(kbUp, alt, ctrl, shift)); |
42873e30 | 2630 | resetParser(); |
7b5261bc KL |
2631 | return; |
2632 | case 'B': | |
2633 | // Down | |
7b5261bc | 2634 | if (params.size() > 1) { |
32437017 KL |
2635 | shift = csiIsShift(params.get(1)); |
2636 | alt = csiIsAlt(params.get(1)); | |
2637 | ctrl = csiIsCtrl(params.get(1)); | |
7b5261bc | 2638 | } |
b299e69c | 2639 | events.add(new TKeypressEvent(kbDown, alt, ctrl, shift)); |
42873e30 | 2640 | resetParser(); |
7b5261bc KL |
2641 | return; |
2642 | case 'C': | |
2643 | // Right | |
7b5261bc | 2644 | if (params.size() > 1) { |
32437017 KL |
2645 | shift = csiIsShift(params.get(1)); |
2646 | alt = csiIsAlt(params.get(1)); | |
2647 | ctrl = csiIsCtrl(params.get(1)); | |
7b5261bc | 2648 | } |
b299e69c | 2649 | events.add(new TKeypressEvent(kbRight, alt, ctrl, shift)); |
42873e30 | 2650 | resetParser(); |
7b5261bc KL |
2651 | return; |
2652 | case 'D': | |
2653 | // Left | |
7b5261bc | 2654 | if (params.size() > 1) { |
32437017 KL |
2655 | shift = csiIsShift(params.get(1)); |
2656 | alt = csiIsAlt(params.get(1)); | |
2657 | ctrl = csiIsCtrl(params.get(1)); | |
7b5261bc | 2658 | } |
b299e69c | 2659 | events.add(new TKeypressEvent(kbLeft, alt, ctrl, shift)); |
42873e30 | 2660 | resetParser(); |
7b5261bc | 2661 | return; |
32437017 KL |
2662 | case 'H': |
2663 | // Home | |
2664 | if (params.size() > 1) { | |
2665 | shift = csiIsShift(params.get(1)); | |
2666 | alt = csiIsAlt(params.get(1)); | |
2667 | ctrl = csiIsCtrl(params.get(1)); | |
2668 | } | |
2669 | events.add(new TKeypressEvent(kbHome, alt, ctrl, shift)); | |
42873e30 | 2670 | resetParser(); |
32437017 KL |
2671 | return; |
2672 | case 'F': | |
2673 | // End | |
2674 | if (params.size() > 1) { | |
2675 | shift = csiIsShift(params.get(1)); | |
2676 | alt = csiIsAlt(params.get(1)); | |
2677 | ctrl = csiIsCtrl(params.get(1)); | |
2678 | } | |
2679 | events.add(new TKeypressEvent(kbEnd, alt, ctrl, shift)); | |
42873e30 | 2680 | resetParser(); |
32437017 | 2681 | return; |
a69ed767 KL |
2682 | case 't': |
2683 | // windowOps | |
2684 | if ((params.size() > 2) && (params.get(0).equals("4"))) { | |
2685 | if (debugToStderr) { | |
2686 | System.err.printf("windowOp pixels: " + | |
2687 | "height %s width %s\n", | |
2688 | params.get(1), params.get(2)); | |
2689 | } | |
2690 | try { | |
2691 | widthPixels = Integer.parseInt(params.get(2)); | |
2692 | heightPixels = Integer.parseInt(params.get(1)); | |
2693 | } catch (NumberFormatException e) { | |
2694 | if (debugToStderr) { | |
2695 | e.printStackTrace(); | |
2696 | } | |
2697 | } | |
2698 | if (widthPixels <= 0) { | |
2699 | widthPixels = 640; | |
2700 | } | |
2701 | if (heightPixels <= 0) { | |
2702 | heightPixels = 400; | |
2703 | } | |
2704 | } | |
2705 | resetParser(); | |
2706 | return; | |
7b5261bc KL |
2707 | default: |
2708 | break; | |
2709 | } | |
2710 | } | |
2711 | ||
2712 | // Unknown keystroke, ignore | |
42873e30 | 2713 | resetParser(); |
7b5261bc KL |
2714 | return; |
2715 | ||
2716 | case MOUSE: | |
92554d64 | 2717 | params.set(0, params.get(params.size() - 1) + ch); |
7b5261bc KL |
2718 | if (params.get(0).length() == 3) { |
2719 | // We have enough to generate a mouse event | |
2720 | events.add(parseMouse()); | |
42873e30 | 2721 | resetParser(); |
7b5261bc KL |
2722 | } |
2723 | return; | |
2724 | ||
2725 | default: | |
2726 | break; | |
2727 | } | |
2728 | ||
2729 | // This "should" be impossible to reach | |
2730 | return; | |
b1589621 KL |
2731 | } |
2732 | ||
a69ed767 KL |
2733 | /** |
2734 | * Request (u)xterm to report the current window size dimensions. | |
2735 | * | |
2736 | * @return the string to emit to xterm | |
2737 | */ | |
2738 | private String xtermReportWindowPixelDimensions() { | |
2739 | return "\033[14t"; | |
2740 | } | |
2741 | ||
b1589621 | 2742 | /** |
05dbb28d KL |
2743 | * Tell (u)xterm that we want alt- keystrokes to send escape + character |
2744 | * rather than set the 8th bit. Anyone who wants UTF8 should want this | |
2745 | * enabled. | |
b1589621 | 2746 | * |
05dbb28d KL |
2747 | * @param on if true, enable metaSendsEscape |
2748 | * @return the string to emit to xterm | |
b1589621 | 2749 | */ |
b5f2a6db | 2750 | private String xtermMetaSendsEscape(final boolean on) { |
7b5261bc KL |
2751 | if (on) { |
2752 | return "\033[?1036h\033[?1034l"; | |
2753 | } | |
2754 | return "\033[?1036l"; | |
b1589621 KL |
2755 | } |
2756 | ||
55d2b2c2 | 2757 | /** |
42873e30 | 2758 | * Create an xterm OSC sequence to change the window title. |
55d2b2c2 KL |
2759 | * |
2760 | * @param title the new title | |
2761 | * @return the string to emit to xterm | |
2762 | */ | |
42873e30 | 2763 | private String getSetTitleString(final String title) { |
55d2b2c2 KL |
2764 | return "\033]2;" + title + "\007"; |
2765 | } | |
2766 | ||
a69ed767 KL |
2767 | // ------------------------------------------------------------------------ |
2768 | // Sixel output support --------------------------------------------------- | |
2769 | // ------------------------------------------------------------------------ | |
2770 | ||
a75902fa KL |
2771 | /** |
2772 | * Get the number of colors in the sixel palette. | |
2773 | * | |
2774 | * @return the palette size | |
2775 | */ | |
2776 | public int getSixelPaletteSize() { | |
2777 | return sixelPaletteSize; | |
2778 | } | |
2779 | ||
2780 | /** | |
2781 | * Set the number of colors in the sixel palette. | |
2782 | * | |
2783 | * @param paletteSize the new palette size | |
2784 | */ | |
2785 | public void setSixelPaletteSize(final int paletteSize) { | |
2786 | if (paletteSize == sixelPaletteSize) { | |
2787 | return; | |
2788 | } | |
2789 | ||
2790 | switch (paletteSize) { | |
2791 | case 2: | |
2792 | case 256: | |
2793 | case 512: | |
2794 | case 1024: | |
2795 | case 2048: | |
2796 | break; | |
2797 | default: | |
2798 | throw new IllegalArgumentException("Unsupported sixel palette " + | |
2799 | " size: " + paletteSize); | |
2800 | } | |
2801 | ||
2802 | // Don't step on the screen refresh thread. | |
2803 | synchronized (this) { | |
2804 | sixelPaletteSize = paletteSize; | |
2805 | palette = null; | |
2806 | sixelCache = null; | |
2807 | clearPhysical(); | |
2808 | } | |
2809 | } | |
2810 | ||
a69ed767 KL |
2811 | /** |
2812 | * Start a sixel string for display one row's worth of bitmap data. | |
2813 | * | |
2814 | * @param x column coordinate. 0 is the left-most column. | |
2815 | * @param y row coordinate. 0 is the top-most row. | |
2816 | * @return the string to emit to an ANSI / ECMA-style terminal | |
2817 | */ | |
2818 | private String startSixel(final int x, final int y) { | |
2819 | StringBuilder sb = new StringBuilder(); | |
2820 | ||
2821 | assert (sixel == true); | |
2822 | ||
2823 | // Place the cursor | |
2824 | sb.append(gotoXY(x, y)); | |
2825 | ||
2826 | // DCS | |
2827 | sb.append("\033Pq"); | |
2828 | ||
2829 | if (palette == null) { | |
2830 | palette = new SixelPalette(); | |
2831 | } | |
2832 | ||
2833 | return sb.toString(); | |
2834 | } | |
2835 | ||
2836 | /** | |
2837 | * End a sixel string for display one row's worth of bitmap data. | |
2838 | * | |
2839 | * @return the string to emit to an ANSI / ECMA-style terminal | |
2840 | */ | |
2841 | private String endSixel() { | |
2842 | assert (sixel == true); | |
2843 | ||
2844 | // ST | |
2845 | return ("\033\\"); | |
2846 | } | |
2847 | ||
2848 | /** | |
2849 | * Create a sixel string representing a row of several cells containing | |
2850 | * bitmap data. | |
2851 | * | |
2852 | * @param x column coordinate. 0 is the left-most column. | |
2853 | * @param y row coordinate. 0 is the top-most row. | |
2854 | * @param cells the cells containing the bitmap data | |
2855 | * @return the string to emit to an ANSI / ECMA-style terminal | |
2856 | */ | |
2857 | private String toSixel(final int x, final int y, | |
2858 | final ArrayList<Cell> cells) { | |
2859 | ||
2860 | StringBuilder sb = new StringBuilder(); | |
2861 | ||
a69ed767 KL |
2862 | assert (cells != null); |
2863 | assert (cells.size() > 0); | |
2864 | assert (cells.get(0).getImage() != null); | |
2865 | ||
e23ea538 KL |
2866 | if (sixel == false) { |
2867 | sb.append(normal()); | |
2868 | sb.append(gotoXY(x, y)); | |
2869 | for (int i = 0; i < cells.size(); i++) { | |
2870 | sb.append(' '); | |
2871 | } | |
2872 | return sb.toString(); | |
2873 | } | |
2874 | ||
a69ed767 KL |
2875 | if (sixelCache == null) { |
2876 | sixelCache = new SixelCache(height * 10); | |
2877 | } | |
2878 | ||
2879 | // Save and get rows to/from the cache that do NOT have inverted | |
2880 | // cells. | |
2881 | boolean saveInCache = true; | |
2882 | for (Cell cell: cells) { | |
2883 | if (cell.isInvertedImage()) { | |
2884 | saveInCache = false; | |
2885 | } | |
2886 | } | |
2887 | if (saveInCache) { | |
2888 | String cachedResult = sixelCache.get(cells); | |
2889 | if (cachedResult != null) { | |
2890 | // System.err.println("CACHE HIT"); | |
2891 | sb.append(startSixel(x, y)); | |
2892 | sb.append(cachedResult); | |
2893 | sb.append(endSixel()); | |
2894 | return sb.toString(); | |
2895 | } | |
2896 | // System.err.println("CACHE MISS"); | |
2897 | } | |
2898 | ||
2899 | int imageWidth = cells.get(0).getImage().getWidth(); | |
2900 | int imageHeight = cells.get(0).getImage().getHeight(); | |
2901 | ||
2902 | // cells.get(x).getImage() has a dithered bitmap containing indexes | |
2903 | // into the color palette. Piece these together into one larger | |
2904 | // image for final rendering. | |
2905 | int totalWidth = 0; | |
2906 | int fullWidth = cells.size() * getTextWidth(); | |
2907 | int fullHeight = getTextHeight(); | |
2908 | for (int i = 0; i < cells.size(); i++) { | |
2909 | totalWidth += cells.get(i).getImage().getWidth(); | |
2910 | } | |
2911 | ||
2912 | BufferedImage image = new BufferedImage(fullWidth, | |
2913 | fullHeight, BufferedImage.TYPE_INT_ARGB); | |
2914 | ||
2915 | int [] rgbArray; | |
2916 | for (int i = 0; i < cells.size() - 1; i++) { | |
ceee6bca KL |
2917 | int tileWidth = Math.min(cells.get(i).getImage().getWidth(), |
2918 | imageWidth); | |
2919 | int tileHeight = Math.min(cells.get(i).getImage().getHeight(), | |
2920 | imageHeight); | |
3af53a35 KL |
2921 | if (false && cells.get(i).isInvertedImage()) { |
2922 | // I used to put an all-white cell over the cursor, don't do | |
2923 | // that anymore. | |
a69ed767 KL |
2924 | rgbArray = new int[imageWidth * imageHeight]; |
2925 | for (int j = 0; j < rgbArray.length; j++) { | |
2926 | rgbArray[j] = 0xFFFFFF; | |
2927 | } | |
2928 | } else { | |
ceee6bca KL |
2929 | try { |
2930 | rgbArray = cells.get(i).getImage().getRGB(0, 0, | |
2931 | tileWidth, tileHeight, null, 0, tileWidth); | |
2932 | } catch (Exception e) { | |
2933 | throw new RuntimeException("image " + imageWidth + "x" + | |
2934 | imageHeight + | |
2935 | "tile " + tileWidth + "x" + | |
2936 | tileHeight + | |
2937 | " cells.get(i).getImage() " + | |
2938 | cells.get(i).getImage() + | |
2939 | " i " + i + | |
2940 | " fullWidth " + fullWidth + | |
2941 | " fullHeight " + fullHeight, e); | |
2942 | } | |
a69ed767 | 2943 | } |
9696a8f6 KL |
2944 | |
2945 | /* | |
2946 | System.err.printf("calling image.setRGB(): %d %d %d %d %d\n", | |
2947 | i * imageWidth, 0, imageWidth, imageHeight, | |
2948 | 0, imageWidth); | |
2949 | System.err.printf(" fullWidth %d fullHeight %d cells.size() %d textWidth %d\n", | |
2950 | fullWidth, fullHeight, cells.size(), getTextWidth()); | |
2951 | */ | |
2952 | ||
ceee6bca KL |
2953 | image.setRGB(i * imageWidth, 0, tileWidth, tileHeight, |
2954 | rgbArray, 0, tileWidth); | |
2955 | if (tileHeight < fullHeight) { | |
a69ed767 KL |
2956 | int backgroundColor = cells.get(i).getBackground().getRGB(); |
2957 | for (int imageX = 0; imageX < image.getWidth(); imageX++) { | |
2958 | for (int imageY = imageHeight; imageY < fullHeight; | |
2959 | imageY++) { | |
2960 | ||
2961 | image.setRGB(imageX, imageY, backgroundColor); | |
2962 | } | |
2963 | } | |
2964 | } | |
2965 | } | |
2966 | totalWidth -= ((cells.size() - 1) * imageWidth); | |
3af53a35 KL |
2967 | if (false && cells.get(cells.size() - 1).isInvertedImage()) { |
2968 | // I used to put an all-white cell over the cursor, don't do that | |
2969 | // anymore. | |
a69ed767 KL |
2970 | rgbArray = new int[totalWidth * imageHeight]; |
2971 | for (int j = 0; j < rgbArray.length; j++) { | |
2972 | rgbArray[j] = 0xFFFFFF; | |
2973 | } | |
2974 | } else { | |
ceee6bca KL |
2975 | try { |
2976 | rgbArray = cells.get(cells.size() - 1).getImage().getRGB(0, 0, | |
2977 | totalWidth, imageHeight, null, 0, totalWidth); | |
2978 | } catch (Exception e) { | |
2979 | throw new RuntimeException("image " + imageWidth + "x" + | |
2980 | imageHeight + " cells.get(cells.size() - 1).getImage() " + | |
2981 | cells.get(cells.size() - 1).getImage(), e); | |
2982 | } | |
a69ed767 KL |
2983 | } |
2984 | image.setRGB((cells.size() - 1) * imageWidth, 0, totalWidth, | |
2985 | imageHeight, rgbArray, 0, totalWidth); | |
2986 | ||
2987 | if (totalWidth < getTextWidth()) { | |
2988 | int backgroundColor = cells.get(cells.size() - 1).getBackground().getRGB(); | |
2989 | ||
2990 | for (int imageX = image.getWidth() - totalWidth; | |
2991 | imageX < image.getWidth(); imageX++) { | |
2992 | ||
2993 | for (int imageY = 0; imageY < fullHeight; imageY++) { | |
2994 | image.setRGB(imageX, imageY, backgroundColor); | |
2995 | } | |
2996 | } | |
2997 | } | |
2998 | ||
2999 | // Dither the image. It is ok to lose the original here. | |
3000 | if (palette == null) { | |
3001 | palette = new SixelPalette(); | |
3002 | } | |
3003 | image = palette.ditherImage(image); | |
3004 | ||
3005 | // Emit the palette, but only for the colors actually used by these | |
3006 | // cells. | |
a75902fa | 3007 | boolean [] usedColors = new boolean[sixelPaletteSize]; |
a69ed767 KL |
3008 | for (int imageX = 0; imageX < image.getWidth(); imageX++) { |
3009 | for (int imageY = 0; imageY < image.getHeight(); imageY++) { | |
3010 | usedColors[image.getRGB(imageX, imageY)] = true; | |
3011 | } | |
3012 | } | |
3013 | palette.emitPalette(sb, usedColors); | |
3014 | ||
3015 | // Render the entire row of cells. | |
3016 | for (int currentRow = 0; currentRow < fullHeight; currentRow += 6) { | |
3017 | int [][] sixels = new int[image.getWidth()][6]; | |
3018 | ||
3019 | // See which colors are actually used in this band of sixels. | |
3020 | for (int imageX = 0; imageX < image.getWidth(); imageX++) { | |
3021 | for (int imageY = 0; | |
3022 | (imageY < 6) && (imageY + currentRow < fullHeight); | |
3023 | imageY++) { | |
3024 | ||
3025 | int colorIdx = image.getRGB(imageX, imageY + currentRow); | |
3026 | assert (colorIdx >= 0); | |
a75902fa | 3027 | assert (colorIdx < sixelPaletteSize); |
a69ed767 KL |
3028 | |
3029 | sixels[imageX][imageY] = colorIdx; | |
3030 | } | |
3031 | } | |
3032 | ||
a75902fa | 3033 | for (int i = 0; i < sixelPaletteSize; i++) { |
a69ed767 KL |
3034 | boolean isUsed = false; |
3035 | for (int imageX = 0; imageX < image.getWidth(); imageX++) { | |
3036 | for (int j = 0; j < 6; j++) { | |
3037 | if (sixels[imageX][j] == i) { | |
3038 | isUsed = true; | |
3039 | } | |
3040 | } | |
3041 | } | |
3042 | if (isUsed == false) { | |
3043 | continue; | |
3044 | } | |
3045 | ||
3046 | // Set to the beginning of scan line for the next set of | |
3047 | // colored pixels, and select the color. | |
3048 | sb.append(String.format("$#%d", i)); | |
3049 | ||
fa535516 KL |
3050 | int oldData = -1; |
3051 | int oldDataCount = 0; | |
a69ed767 KL |
3052 | for (int imageX = 0; imageX < image.getWidth(); imageX++) { |
3053 | ||
3054 | // Add up all the pixels that match this color. | |
3055 | int data = 0; | |
3056 | for (int j = 0; | |
3057 | (j < 6) && (currentRow + j < fullHeight); | |
3058 | j++) { | |
3059 | ||
3060 | if (sixels[imageX][j] == i) { | |
3061 | switch (j) { | |
3062 | case 0: | |
3063 | data += 1; | |
3064 | break; | |
3065 | case 1: | |
3066 | data += 2; | |
3067 | break; | |
3068 | case 2: | |
3069 | data += 4; | |
3070 | break; | |
3071 | case 3: | |
3072 | data += 8; | |
3073 | break; | |
3074 | case 4: | |
3075 | data += 16; | |
3076 | break; | |
3077 | case 5: | |
3078 | data += 32; | |
3079 | break; | |
3080 | } | |
3081 | } | |
3082 | } | |
3083 | assert (data >= 0); | |
fa535516 | 3084 | assert (data < 64); |
a69ed767 | 3085 | data += 63; |
e6469faa | 3086 | |
fa535516 KL |
3087 | if (data == oldData) { |
3088 | oldDataCount++; | |
3089 | } else { | |
3090 | if (oldDataCount == 1) { | |
3091 | sb.append((char) oldData); | |
3092 | } else if (oldDataCount > 1) { | |
3093 | sb.append(String.format("!%d", oldDataCount)); | |
3094 | sb.append((char) oldData); | |
3095 | } | |
3096 | oldDataCount = 1; | |
3097 | oldData = data; | |
3098 | } | |
e6469faa | 3099 | |
a69ed767 | 3100 | } // for (int imageX = 0; imageX < image.getWidth(); imageX++) |
fa535516 KL |
3101 | |
3102 | // Emit the last sequence. | |
3103 | if (oldDataCount == 1) { | |
3104 | sb.append((char) oldData); | |
3105 | } else if (oldDataCount > 1) { | |
3106 | sb.append(String.format("!%d", oldDataCount)); | |
3107 | sb.append((char) oldData); | |
3108 | } | |
3109 | ||
a75902fa | 3110 | } // for (int i = 0; i < sixelPaletteSize; i++) |
a69ed767 KL |
3111 | |
3112 | // Advance to the next scan line. | |
3113 | sb.append("-"); | |
3114 | ||
3115 | } // for (int currentRow = 0; currentRow < imageHeight; currentRow += 6) | |
3116 | ||
3117 | // Kill the very last "-", because it is unnecessary. | |
3118 | sb.deleteCharAt(sb.length() - 1); | |
3119 | ||
3120 | if (saveInCache) { | |
3121 | // This row is OK to save into the cache. | |
3122 | sixelCache.put(cells, sb.toString()); | |
3123 | } | |
3124 | ||
3125 | return (startSixel(x, y) + sb.toString() + endSixel()); | |
3126 | } | |
3127 | ||
5fc7bf09 KL |
3128 | /** |
3129 | * Get the sixel support flag. | |
3130 | * | |
3131 | * @return true if this terminal is emitting sixel | |
3132 | */ | |
3133 | public boolean hasSixel() { | |
3134 | return sixel; | |
3135 | } | |
3136 | ||
a69ed767 KL |
3137 | // ------------------------------------------------------------------------ |
3138 | // End sixel output support ----------------------------------------------- | |
3139 | // ------------------------------------------------------------------------ | |
3140 | ||
b1589621 | 3141 | /** |
42873e30 | 3142 | * Create a SGR parameter sequence for a single color change. |
b1589621 | 3143 | * |
15ea4d73 | 3144 | * @param bold if true, set bold |
05dbb28d KL |
3145 | * @param color one of the Color.WHITE, Color.BLUE, etc. constants |
3146 | * @param foreground if true, this is a foreground color | |
3147 | * @return the string to emit to an ANSI / ECMA-style terminal, | |
3148 | * e.g. "\033[42m" | |
b1589621 | 3149 | */ |
42873e30 | 3150 | private String color(final boolean bold, final Color color, |
15ea4d73 KL |
3151 | final boolean foreground) { |
3152 | return color(color, foreground, true) + | |
3153 | rgbColor(bold, color, foreground); | |
3154 | } | |
3155 | ||
051e2913 KL |
3156 | /** |
3157 | * Create a T.416 RGB parameter sequence for a single color change. | |
3158 | * | |
3159 | * @param colorRGB a 24-bit RGB value for foreground color | |
3160 | * @param foreground if true, this is a foreground color | |
3161 | * @return the string to emit to an ANSI / ECMA-style terminal, | |
3162 | * e.g. "\033[42m" | |
3163 | */ | |
3164 | private String colorRGB(final int colorRGB, final boolean foreground) { | |
3165 | ||
a69ed767 KL |
3166 | int colorRed = (colorRGB >>> 16) & 0xFF; |
3167 | int colorGreen = (colorRGB >>> 8) & 0xFF; | |
3168 | int colorBlue = colorRGB & 0xFF; | |
051e2913 KL |
3169 | |
3170 | StringBuilder sb = new StringBuilder(); | |
3171 | if (foreground) { | |
3172 | sb.append("\033[38;2;"); | |
3173 | } else { | |
3174 | sb.append("\033[48;2;"); | |
3175 | } | |
3176 | sb.append(String.format("%d;%d;%dm", colorRed, colorGreen, colorBlue)); | |
3177 | return sb.toString(); | |
3178 | } | |
3179 | ||
3180 | /** | |
3181 | * Create a T.416 RGB parameter sequence for both foreground and | |
3182 | * background color change. | |
3183 | * | |
3184 | * @param foreColorRGB a 24-bit RGB value for foreground color | |
3185 | * @param backColorRGB a 24-bit RGB value for foreground color | |
3186 | * @return the string to emit to an ANSI / ECMA-style terminal, | |
3187 | * e.g. "\033[42m" | |
3188 | */ | |
3189 | private String colorRGB(final int foreColorRGB, final int backColorRGB) { | |
a69ed767 KL |
3190 | int foreColorRed = (foreColorRGB >>> 16) & 0xFF; |
3191 | int foreColorGreen = (foreColorRGB >>> 8) & 0xFF; | |
3192 | int foreColorBlue = foreColorRGB & 0xFF; | |
3193 | int backColorRed = (backColorRGB >>> 16) & 0xFF; | |
3194 | int backColorGreen = (backColorRGB >>> 8) & 0xFF; | |
3195 | int backColorBlue = backColorRGB & 0xFF; | |
051e2913 KL |
3196 | |
3197 | StringBuilder sb = new StringBuilder(); | |
3198 | sb.append(String.format("\033[38;2;%d;%d;%dm", | |
3199 | foreColorRed, foreColorGreen, foreColorBlue)); | |
3200 | sb.append(String.format("\033[48;2;%d;%d;%dm", | |
3201 | backColorRed, backColorGreen, backColorBlue)); | |
3202 | return sb.toString(); | |
3203 | } | |
3204 | ||
15ea4d73 KL |
3205 | /** |
3206 | * Create a T.416 RGB parameter sequence for a single color change. | |
3207 | * | |
3208 | * @param bold if true, set bold | |
3209 | * @param color one of the Color.WHITE, Color.BLUE, etc. constants | |
3210 | * @param foreground if true, this is a foreground color | |
3211 | * @return the string to emit to an xterm terminal with RGB support, | |
3212 | * e.g. "\033[38;2;RR;GG;BBm" | |
3213 | */ | |
3214 | private String rgbColor(final boolean bold, final Color color, | |
3215 | final boolean foreground) { | |
3216 | if (doRgbColor == false) { | |
3217 | return ""; | |
3218 | } | |
3219 | StringBuilder sb = new StringBuilder("\033["); | |
3220 | if (bold) { | |
3221 | // Bold implies foreground only | |
3222 | sb.append("38;2;"); | |
3223 | if (color.equals(Color.BLACK)) { | |
6ba187ac | 3224 | sb.append("84;84;84"); |
15ea4d73 | 3225 | } else if (color.equals(Color.RED)) { |
6ba187ac | 3226 | sb.append("252;84;84"); |
15ea4d73 | 3227 | } else if (color.equals(Color.GREEN)) { |
6ba187ac | 3228 | sb.append("84;252;84"); |
15ea4d73 | 3229 | } else if (color.equals(Color.YELLOW)) { |
6ba187ac | 3230 | sb.append("252;252;84"); |
15ea4d73 | 3231 | } else if (color.equals(Color.BLUE)) { |
6ba187ac | 3232 | sb.append("84;84;252"); |
15ea4d73 | 3233 | } else if (color.equals(Color.MAGENTA)) { |
6ba187ac | 3234 | sb.append("252;84;252"); |
15ea4d73 | 3235 | } else if (color.equals(Color.CYAN)) { |
6ba187ac | 3236 | sb.append("84;252;252"); |
15ea4d73 KL |
3237 | } else if (color.equals(Color.WHITE)) { |
3238 | sb.append("252;252;252"); | |
3239 | } | |
3240 | } else { | |
3241 | if (foreground) { | |
3242 | sb.append("38;2;"); | |
3243 | } else { | |
3244 | sb.append("48;2;"); | |
3245 | } | |
3246 | if (color.equals(Color.BLACK)) { | |
3247 | sb.append("0;0;0"); | |
3248 | } else if (color.equals(Color.RED)) { | |
3249 | sb.append("168;0;0"); | |
3250 | } else if (color.equals(Color.GREEN)) { | |
3251 | sb.append("0;168;0"); | |
3252 | } else if (color.equals(Color.YELLOW)) { | |
6ba187ac | 3253 | sb.append("168;84;0"); |
15ea4d73 KL |
3254 | } else if (color.equals(Color.BLUE)) { |
3255 | sb.append("0;0;168"); | |
3256 | } else if (color.equals(Color.MAGENTA)) { | |
3257 | sb.append("168;0;168"); | |
3258 | } else if (color.equals(Color.CYAN)) { | |
3259 | sb.append("0;168;168"); | |
3260 | } else if (color.equals(Color.WHITE)) { | |
3261 | sb.append("168;168;168"); | |
3262 | } | |
3263 | } | |
3264 | sb.append("m"); | |
3265 | return sb.toString(); | |
3266 | } | |
3267 | ||
3268 | /** | |
3269 | * Create a T.416 RGB parameter sequence for both foreground and | |
3270 | * background color change. | |
3271 | * | |
3272 | * @param bold if true, set bold | |
3273 | * @param foreColor one of the Color.WHITE, Color.BLUE, etc. constants | |
3274 | * @param backColor one of the Color.WHITE, Color.BLUE, etc. constants | |
3275 | * @return the string to emit to an xterm terminal with RGB support, | |
3276 | * e.g. "\033[38;2;RR;GG;BB;48;2;RR;GG;BBm" | |
3277 | */ | |
3278 | private String rgbColor(final boolean bold, final Color foreColor, | |
3279 | final Color backColor) { | |
3280 | if (doRgbColor == false) { | |
3281 | return ""; | |
3282 | } | |
3283 | ||
3284 | return rgbColor(bold, foreColor, true) + | |
3285 | rgbColor(false, backColor, false); | |
b1589621 KL |
3286 | } |
3287 | ||
3288 | /** | |
3289 | * Create a SGR parameter sequence for a single color change. | |
3290 | * | |
05dbb28d KL |
3291 | * @param color one of the Color.WHITE, Color.BLUE, etc. constants |
3292 | * @param foreground if true, this is a foreground color | |
3293 | * @param header if true, make the full header, otherwise just emit the | |
3294 | * color parameter e.g. "42;" | |
3295 | * @return the string to emit to an ANSI / ECMA-style terminal, | |
3296 | * e.g. "\033[42m" | |
b1589621 | 3297 | */ |
b5f2a6db | 3298 | private String color(final Color color, final boolean foreground, |
7b5261bc KL |
3299 | final boolean header) { |
3300 | ||
3301 | int ecmaColor = color.getValue(); | |
3302 | ||
3303 | // Convert Color.* values to SGR numerics | |
3304 | if (foreground) { | |
3305 | ecmaColor += 30; | |
3306 | } else { | |
3307 | ecmaColor += 40; | |
3308 | } | |
3309 | ||
3310 | if (header) { | |
3311 | return String.format("\033[%dm", ecmaColor); | |
3312 | } else { | |
3313 | return String.format("%d;", ecmaColor); | |
3314 | } | |
b1589621 KL |
3315 | } |
3316 | ||
3317 | /** | |
b5f2a6db | 3318 | * Create a SGR parameter sequence for both foreground and background |
42873e30 | 3319 | * color change. |
b1589621 | 3320 | * |
15ea4d73 | 3321 | * @param bold if true, set bold |
05dbb28d KL |
3322 | * @param foreColor one of the Color.WHITE, Color.BLUE, etc. constants |
3323 | * @param backColor one of the Color.WHITE, Color.BLUE, etc. constants | |
3324 | * @return the string to emit to an ANSI / ECMA-style terminal, | |
3325 | * e.g. "\033[31;42m" | |
b1589621 | 3326 | */ |
42873e30 | 3327 | private String color(final boolean bold, final Color foreColor, |
15ea4d73 KL |
3328 | final Color backColor) { |
3329 | return color(foreColor, backColor, true) + | |
3330 | rgbColor(bold, foreColor, backColor); | |
b1589621 KL |
3331 | } |
3332 | ||
3333 | /** | |
3334 | * Create a SGR parameter sequence for both foreground and | |
3335 | * background color change. | |
3336 | * | |
05dbb28d KL |
3337 | * @param foreColor one of the Color.WHITE, Color.BLUE, etc. constants |
3338 | * @param backColor one of the Color.WHITE, Color.BLUE, etc. constants | |
3339 | * @param header if true, make the full header, otherwise just emit the | |
3340 | * color parameter e.g. "31;42;" | |
3341 | * @return the string to emit to an ANSI / ECMA-style terminal, | |
3342 | * e.g. "\033[31;42m" | |
b1589621 | 3343 | */ |
b5f2a6db | 3344 | private String color(final Color foreColor, final Color backColor, |
7b5261bc | 3345 | final boolean header) { |
b1589621 | 3346 | |
7b5261bc KL |
3347 | int ecmaForeColor = foreColor.getValue(); |
3348 | int ecmaBackColor = backColor.getValue(); | |
b1589621 | 3349 | |
7b5261bc KL |
3350 | // Convert Color.* values to SGR numerics |
3351 | ecmaBackColor += 40; | |
3352 | ecmaForeColor += 30; | |
b1589621 | 3353 | |
7b5261bc KL |
3354 | if (header) { |
3355 | return String.format("\033[%d;%dm", ecmaForeColor, ecmaBackColor); | |
3356 | } else { | |
3357 | return String.format("%d;%d;", ecmaForeColor, ecmaBackColor); | |
3358 | } | |
b1589621 KL |
3359 | } |
3360 | ||
3361 | /** | |
3362 | * Create a SGR parameter sequence for foreground, background, and | |
05dbb28d | 3363 | * several attributes. This sequence first resets all attributes to |
42873e30 | 3364 | * default, then sets attributes as per the parameters. |
b1589621 | 3365 | * |
05dbb28d KL |
3366 | * @param foreColor one of the Color.WHITE, Color.BLUE, etc. constants |
3367 | * @param backColor one of the Color.WHITE, Color.BLUE, etc. constants | |
3368 | * @param bold if true, set bold | |
3369 | * @param reverse if true, set reverse | |
3370 | * @param blink if true, set blink | |
3371 | * @param underline if true, set underline | |
3372 | * @return the string to emit to an ANSI / ECMA-style terminal, | |
3373 | * e.g. "\033[0;1;31;42m" | |
b1589621 | 3374 | */ |
42873e30 | 3375 | private String color(final Color foreColor, final Color backColor, |
7b5261bc KL |
3376 | final boolean bold, final boolean reverse, final boolean blink, |
3377 | final boolean underline) { | |
3378 | ||
3379 | int ecmaForeColor = foreColor.getValue(); | |
3380 | int ecmaBackColor = backColor.getValue(); | |
3381 | ||
3382 | // Convert Color.* values to SGR numerics | |
3383 | ecmaBackColor += 40; | |
3384 | ecmaForeColor += 30; | |
3385 | ||
3386 | StringBuilder sb = new StringBuilder(); | |
3387 | if ( bold && reverse && blink && !underline ) { | |
3388 | sb.append("\033[0;1;7;5;"); | |
3389 | } else if ( bold && reverse && !blink && !underline ) { | |
3390 | sb.append("\033[0;1;7;"); | |
3391 | } else if ( !bold && reverse && blink && !underline ) { | |
3392 | sb.append("\033[0;7;5;"); | |
3393 | } else if ( bold && !reverse && blink && !underline ) { | |
3394 | sb.append("\033[0;1;5;"); | |
3395 | } else if ( bold && !reverse && !blink && !underline ) { | |
3396 | sb.append("\033[0;1;"); | |
3397 | } else if ( !bold && reverse && !blink && !underline ) { | |
3398 | sb.append("\033[0;7;"); | |
3399 | } else if ( !bold && !reverse && blink && !underline) { | |
3400 | sb.append("\033[0;5;"); | |
3401 | } else if ( bold && reverse && blink && underline ) { | |
3402 | sb.append("\033[0;1;7;5;4;"); | |
3403 | } else if ( bold && reverse && !blink && underline ) { | |
3404 | sb.append("\033[0;1;7;4;"); | |
3405 | } else if ( !bold && reverse && blink && underline ) { | |
3406 | sb.append("\033[0;7;5;4;"); | |
3407 | } else if ( bold && !reverse && blink && underline ) { | |
3408 | sb.append("\033[0;1;5;4;"); | |
3409 | } else if ( bold && !reverse && !blink && underline ) { | |
3410 | sb.append("\033[0;1;4;"); | |
3411 | } else if ( !bold && reverse && !blink && underline ) { | |
3412 | sb.append("\033[0;7;4;"); | |
3413 | } else if ( !bold && !reverse && blink && underline) { | |
3414 | sb.append("\033[0;5;4;"); | |
3415 | } else if ( !bold && !reverse && !blink && underline) { | |
3416 | sb.append("\033[0;4;"); | |
3417 | } else { | |
3418 | assert (!bold && !reverse && !blink && !underline); | |
3419 | sb.append("\033[0;"); | |
3420 | } | |
3421 | sb.append(String.format("%d;%dm", ecmaForeColor, ecmaBackColor)); | |
8a632d71 KL |
3422 | sb.append(rgbColor(bold, foreColor, backColor)); |
3423 | return sb.toString(); | |
051e2913 KL |
3424 | } |
3425 | ||
3426 | /** | |
3427 | * Create a SGR parameter sequence for foreground, background, and | |
3428 | * several attributes. This sequence first resets all attributes to | |
3429 | * default, then sets attributes as per the parameters. | |
3430 | * | |
3431 | * @param foreColorRGB a 24-bit RGB value for foreground color | |
3432 | * @param backColorRGB a 24-bit RGB value for foreground color | |
3433 | * @param bold if true, set bold | |
3434 | * @param reverse if true, set reverse | |
3435 | * @param blink if true, set blink | |
3436 | * @param underline if true, set underline | |
3437 | * @return the string to emit to an ANSI / ECMA-style terminal, | |
3438 | * e.g. "\033[0;1;31;42m" | |
3439 | */ | |
3440 | private String colorRGB(final int foreColorRGB, final int backColorRGB, | |
3441 | final boolean bold, final boolean reverse, final boolean blink, | |
3442 | final boolean underline) { | |
3443 | ||
a69ed767 KL |
3444 | int foreColorRed = (foreColorRGB >>> 16) & 0xFF; |
3445 | int foreColorGreen = (foreColorRGB >>> 8) & 0xFF; | |
3446 | int foreColorBlue = foreColorRGB & 0xFF; | |
3447 | int backColorRed = (backColorRGB >>> 16) & 0xFF; | |
3448 | int backColorGreen = (backColorRGB >>> 8) & 0xFF; | |
3449 | int backColorBlue = backColorRGB & 0xFF; | |
051e2913 KL |
3450 | |
3451 | StringBuilder sb = new StringBuilder(); | |
3452 | if ( bold && reverse && blink && !underline ) { | |
3453 | sb.append("\033[0;1;7;5;"); | |
3454 | } else if ( bold && reverse && !blink && !underline ) { | |
3455 | sb.append("\033[0;1;7;"); | |
3456 | } else if ( !bold && reverse && blink && !underline ) { | |
3457 | sb.append("\033[0;7;5;"); | |
3458 | } else if ( bold && !reverse && blink && !underline ) { | |
3459 | sb.append("\033[0;1;5;"); | |
3460 | } else if ( bold && !reverse && !blink && !underline ) { | |
3461 | sb.append("\033[0;1;"); | |
3462 | } else if ( !bold && reverse && !blink && !underline ) { | |
3463 | sb.append("\033[0;7;"); | |
3464 | } else if ( !bold && !reverse && blink && !underline) { | |
3465 | sb.append("\033[0;5;"); | |
3466 | } else if ( bold && reverse && blink && underline ) { | |
3467 | sb.append("\033[0;1;7;5;4;"); | |
3468 | } else if ( bold && reverse && !blink && underline ) { | |
3469 | sb.append("\033[0;1;7;4;"); | |
3470 | } else if ( !bold && reverse && blink && underline ) { | |
3471 | sb.append("\033[0;7;5;4;"); | |
3472 | } else if ( bold && !reverse && blink && underline ) { | |
3473 | sb.append("\033[0;1;5;4;"); | |
3474 | } else if ( bold && !reverse && !blink && underline ) { | |
3475 | sb.append("\033[0;1;4;"); | |
3476 | } else if ( !bold && reverse && !blink && underline ) { | |
3477 | sb.append("\033[0;7;4;"); | |
3478 | } else if ( !bold && !reverse && blink && underline) { | |
3479 | sb.append("\033[0;5;4;"); | |
3480 | } else if ( !bold && !reverse && !blink && underline) { | |
3481 | sb.append("\033[0;4;"); | |
3482 | } else { | |
3483 | assert (!bold && !reverse && !blink && !underline); | |
3484 | sb.append("\033[0;"); | |
3485 | } | |
3486 | ||
3487 | sb.append("m\033[38;2;"); | |
3488 | sb.append(String.format("%d;%d;%d", foreColorRed, foreColorGreen, | |
3489 | foreColorBlue)); | |
3490 | sb.append("m\033[48;2;"); | |
3491 | sb.append(String.format("%d;%d;%d", backColorRed, backColorGreen, | |
3492 | backColorBlue)); | |
3493 | sb.append("m"); | |
3494 | return sb.toString(); | |
b1589621 KL |
3495 | } |
3496 | ||
b1589621 | 3497 | /** |
42873e30 | 3498 | * Create a SGR parameter sequence to reset to defaults. |
b1589621 | 3499 | * |
05dbb28d KL |
3500 | * @return the string to emit to an ANSI / ECMA-style terminal, |
3501 | * e.g. "\033[0m" | |
b1589621 | 3502 | */ |
42873e30 | 3503 | private String normal() { |
8a632d71 | 3504 | return normal(true) + rgbColor(false, Color.WHITE, Color.BLACK); |
b1589621 KL |
3505 | } |
3506 | ||
3507 | /** | |
3508 | * Create a SGR parameter sequence to reset to defaults. | |
3509 | * | |
05dbb28d KL |
3510 | * @param header if true, make the full header, otherwise just emit the |
3511 | * bare parameter e.g. "0;" | |
3512 | * @return the string to emit to an ANSI / ECMA-style terminal, | |
3513 | * e.g. "\033[0m" | |
b1589621 | 3514 | */ |
b5f2a6db | 3515 | private String normal(final boolean header) { |
7b5261bc KL |
3516 | if (header) { |
3517 | return "\033[0;37;40m"; | |
3518 | } | |
3519 | return "0;37;40"; | |
b1589621 KL |
3520 | } |
3521 | ||
b1589621 | 3522 | /** |
42873e30 | 3523 | * Create a SGR parameter sequence for enabling the visible cursor. |
b1589621 | 3524 | * |
05dbb28d KL |
3525 | * @param on if true, turn on cursor |
3526 | * @return the string to emit to an ANSI / ECMA-style terminal | |
b1589621 | 3527 | */ |
42873e30 | 3528 | private String cursor(final boolean on) { |
7b5261bc KL |
3529 | if (on && !cursorOn) { |
3530 | cursorOn = true; | |
3531 | return "\033[?25h"; | |
3532 | } | |
3533 | if (!on && cursorOn) { | |
3534 | cursorOn = false; | |
3535 | return "\033[?25l"; | |
3536 | } | |
3537 | return ""; | |
b1589621 KL |
3538 | } |
3539 | ||
3540 | /** | |
3541 | * Clear the entire screen. Because some terminals use back-color-erase, | |
3542 | * set the color to white-on-black beforehand. | |
3543 | * | |
05dbb28d | 3544 | * @return the string to emit to an ANSI / ECMA-style terminal |
b1589621 | 3545 | */ |
42873e30 | 3546 | private String clearAll() { |
7b5261bc | 3547 | return "\033[0;37;40m\033[2J"; |
b1589621 KL |
3548 | } |
3549 | ||
3550 | /** | |
3551 | * Clear the line from the cursor (inclusive) to the end of the screen. | |
3552 | * Because some terminals use back-color-erase, set the color to | |
42873e30 | 3553 | * white-on-black beforehand. |
b1589621 | 3554 | * |
05dbb28d | 3555 | * @return the string to emit to an ANSI / ECMA-style terminal |
b1589621 | 3556 | */ |
42873e30 | 3557 | private String clearRemainingLine() { |
7b5261bc | 3558 | return "\033[0;37;40m\033[K"; |
b1589621 KL |
3559 | } |
3560 | ||
b1589621 | 3561 | /** |
42873e30 | 3562 | * Move the cursor to (x, y). |
b1589621 | 3563 | * |
05dbb28d KL |
3564 | * @param x column coordinate. 0 is the left-most column. |
3565 | * @param y row coordinate. 0 is the top-most row. | |
3566 | * @return the string to emit to an ANSI / ECMA-style terminal | |
b1589621 | 3567 | */ |
42873e30 | 3568 | private String gotoXY(final int x, final int y) { |
7b5261bc | 3569 | return String.format("\033[%d;%dH", y + 1, x + 1); |
b1589621 KL |
3570 | } |
3571 | ||
3572 | /** | |
05dbb28d | 3573 | * Tell (u)xterm that we want to receive mouse events based on "Any event |
b5f2a6db KL |
3574 | * tracking", UTF-8 coordinates, and then SGR coordinates. Ideally we |
3575 | * will end up with SGR coordinates with UTF-8 coordinates as a fallback. | |
3576 | * See | |
b1589621 KL |
3577 | * http://invisible-island.net/xterm/ctlseqs/ctlseqs.html#Mouse%20Tracking |
3578 | * | |
05dbb28d | 3579 | * Note that this also sets the alternate/primary screen buffer. |
b1589621 | 3580 | * |
978a5d8f KL |
3581 | * Finally, also emit a Privacy Message sequence that Jexer recognizes to |
3582 | * mean "hide the mouse pointer." We have to use our own sequence to do | |
3583 | * this because there is no standard in xterm for unilaterally hiding the | |
3584 | * pointer all the time (regardless of typing). | |
3585 | * | |
05dbb28d KL |
3586 | * @param on If true, enable mouse report and use the alternate screen |
3587 | * buffer. If false disable mouse reporting and use the primary screen | |
3588 | * buffer. | |
3589 | * @return the string to emit to xterm | |
b1589621 | 3590 | */ |
b5f2a6db | 3591 | private String mouse(final boolean on) { |
7b5261bc | 3592 | if (on) { |
978a5d8f | 3593 | return "\033[?1002;1003;1005;1006h\033[?1049h\033^hideMousePointer\033\\"; |
7b5261bc | 3594 | } |
978a5d8f | 3595 | return "\033[?1002;1003;1006;1005l\033[?1049l\033^showMousePointer\033\\"; |
b1589621 KL |
3596 | } |
3597 | ||
3598 | } |