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