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