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4d2c61b4 KL |
1 | /* |
2 | * Jexer - Java Text User Interface | |
3 | * | |
4 | * The MIT License (MIT) | |
5 | * | |
6 | * Copyright (C) 2019 Kevin Lamonte | |
7 | * | |
8 | * Permission is hereby granted, free of charge, to any person obtaining a | |
9 | * copy of this software and associated documentation files (the "Software"), | |
10 | * to deal in the Software without restriction, including without limitation | |
11 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
12 | * and/or sell copies of the Software, and to permit persons to whom the | |
13 | * Software is furnished to do so, subject to the following conditions: | |
14 | * | |
15 | * The above copyright notice and this permission notice shall be included in | |
16 | * all copies or substantial portions of the Software. | |
17 | * | |
18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
20 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
21 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
22 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
23 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER | |
24 | * DEALINGS IN THE SOFTWARE. | |
25 | * | |
26 | * @author Kevin Lamonte [kevin.lamonte@gmail.com] | |
27 | * @version 1 | |
28 | */ | |
29 | package jexer; | |
30 | ||
31 | import java.awt.Font; | |
32 | import java.awt.FontMetrics; | |
33 | import java.awt.Graphics2D; | |
34 | import java.awt.image.BufferedImage; | |
35 | ||
36 | import java.io.InputStream; | |
37 | import java.io.IOException; | |
38 | import java.lang.reflect.Field; | |
39 | import java.text.MessageFormat; | |
40 | import java.util.ArrayList; | |
41 | import java.util.HashMap; | |
42 | import java.util.List; | |
43 | import java.util.Map; | |
44 | import java.util.ResourceBundle; | |
45 | ||
46 | import jexer.backend.ECMA48Terminal; | |
47 | import jexer.backend.GlyphMaker; | |
48 | import jexer.backend.MultiScreen; | |
49 | import jexer.backend.SwingTerminal; | |
50 | import jexer.bits.Cell; | |
51 | import jexer.bits.CellAttributes; | |
52 | import jexer.event.TKeypressEvent; | |
53 | import jexer.event.TMenuEvent; | |
54 | import jexer.event.TMouseEvent; | |
55 | import jexer.event.TResizeEvent; | |
56 | import jexer.menu.TMenu; | |
57 | import jexer.tterminal.DisplayLine; | |
58 | import jexer.tterminal.DisplayListener; | |
59 | import jexer.tterminal.ECMA48; | |
60 | import static jexer.TKeypress.*; | |
61 | ||
62 | /** | |
63 | * TTerminalWindow exposes a ECMA-48 / ANSI X3.64 style terminal in a widget. | |
64 | */ | |
65 | public class TTerminalWidget extends TScrollableWidget | |
66 | implements DisplayListener { | |
67 | ||
68 | /** | |
69 | * Translated strings. | |
70 | */ | |
71 | private static final ResourceBundle i18n = ResourceBundle.getBundle(TTerminalWidget.class.getName()); | |
72 | ||
73 | // ------------------------------------------------------------------------ | |
74 | // Variables -------------------------------------------------------------- | |
75 | // ------------------------------------------------------------------------ | |
76 | ||
77 | /** | |
78 | * The emulator. | |
79 | */ | |
80 | private ECMA48 emulator; | |
81 | ||
82 | /** | |
83 | * The Process created by the shell spawning constructor. | |
84 | */ | |
85 | private Process shell; | |
86 | ||
87 | /** | |
88 | * If true, we are using the ptypipe utility to support dynamic window | |
89 | * resizing. ptypipe is available at | |
90 | * https://gitlab.com/klamonte/ptypipe . | |
91 | */ | |
92 | private boolean ptypipe = false; | |
93 | ||
94 | /** | |
95 | * Double-height font. | |
96 | */ | |
97 | private GlyphMaker doubleFont; | |
98 | ||
99 | /** | |
100 | * Last text width value. | |
101 | */ | |
102 | private int lastTextWidth = -1; | |
103 | ||
104 | /** | |
105 | * Last text height value. | |
106 | */ | |
107 | private int lastTextHeight = -1; | |
108 | ||
109 | /** | |
110 | * The blink state, used only by ECMA48 backend and when double-width | |
111 | * chars must be drawn. | |
112 | */ | |
113 | private boolean blinkState = true; | |
114 | ||
115 | /** | |
116 | * Timer flag, used only by ECMA48 backend and when double-width chars | |
117 | * must be drawn. | |
118 | */ | |
119 | private boolean haveTimer = false; | |
120 | ||
121 | /** | |
122 | * The last seen scrollback lines. | |
123 | */ | |
124 | private List<DisplayLine> scrollback; | |
125 | ||
126 | /** | |
127 | * The last seen display lines. | |
128 | */ | |
129 | private List<DisplayLine> display; | |
130 | ||
131 | /** | |
132 | * If true, the display has changed and needs updating. | |
133 | */ | |
134 | private volatile boolean dirty = true; | |
135 | ||
136 | /** | |
137 | * Time that the display was last updated. | |
138 | */ | |
139 | private long lastUpdateTime = 0; | |
140 | ||
141 | /** | |
142 | * If true, hide the mouse after typing a keystroke. | |
143 | */ | |
144 | private boolean hideMouseWhenTyping = true; | |
145 | ||
146 | /** | |
147 | * If true, the mouse should not be displayed because a keystroke was | |
148 | * typed. | |
149 | */ | |
150 | private boolean typingHidMouse = false; | |
151 | ||
152 | /** | |
153 | * The return value from the emulator. | |
154 | */ | |
155 | private int exitValue = -1; | |
156 | ||
157 | /** | |
158 | * Title to expose to a window. | |
159 | */ | |
160 | private String title = ""; | |
161 | ||
162 | // ------------------------------------------------------------------------ | |
163 | // Constructors ----------------------------------------------------------- | |
164 | // ------------------------------------------------------------------------ | |
165 | ||
166 | /** | |
167 | * Public constructor spawns a custom command line. | |
168 | * | |
169 | * @param parent parent widget | |
170 | * @param x column relative to parent | |
171 | * @param y row relative to parent | |
172 | * @param commandLine the command line to execute | |
173 | */ | |
174 | public TTerminalWidget(final TWidget parent, final int x, | |
175 | final int y, final String commandLine) { | |
176 | ||
177 | this(parent, x, y, commandLine.split("\\s+")); | |
178 | } | |
179 | ||
180 | /** | |
181 | * Public constructor spawns a custom command line. | |
182 | * | |
183 | * @param parent parent widget | |
184 | * @param x column relative to parent | |
185 | * @param y row relative to parent | |
186 | * @param command the command line to execute | |
187 | */ | |
188 | public TTerminalWidget(final TWidget parent, final int x, | |
189 | final int y, final String [] command) { | |
190 | ||
191 | super(parent, x, y, 80, 24); | |
192 | ||
193 | String [] fullCommand; | |
194 | ||
195 | // Spawn a shell and pass its I/O to the other constructor. | |
196 | if ((System.getProperty("jexer.TTerminal.ptypipe") != null) | |
197 | && (System.getProperty("jexer.TTerminal.ptypipe"). | |
198 | equals("true")) | |
199 | ) { | |
200 | ptypipe = true; | |
201 | fullCommand = new String[command.length + 1]; | |
202 | fullCommand[0] = "ptypipe"; | |
203 | System.arraycopy(command, 0, fullCommand, 1, command.length); | |
204 | } else if (System.getProperty("os.name").startsWith("Windows")) { | |
205 | fullCommand = new String[3]; | |
206 | fullCommand[0] = "cmd"; | |
207 | fullCommand[1] = "/c"; | |
208 | fullCommand[2] = stringArrayToString(command); | |
209 | } else if (System.getProperty("os.name").startsWith("Mac")) { | |
210 | fullCommand = new String[6]; | |
211 | fullCommand[0] = "script"; | |
212 | fullCommand[1] = "-q"; | |
213 | fullCommand[2] = "-F"; | |
214 | fullCommand[3] = "/dev/null"; | |
215 | fullCommand[4] = "-c"; | |
216 | fullCommand[5] = stringArrayToString(command); | |
217 | } else { | |
218 | // Default: behave like Linux | |
219 | fullCommand = new String[5]; | |
220 | fullCommand[0] = "script"; | |
221 | fullCommand[1] = "-fqe"; | |
222 | fullCommand[2] = "/dev/null"; | |
223 | fullCommand[3] = "-c"; | |
224 | fullCommand[4] = stringArrayToString(command); | |
225 | } | |
226 | spawnShell(fullCommand); | |
227 | } | |
228 | ||
229 | /** | |
230 | * Public constructor spawns a shell. | |
231 | * | |
232 | * @param parent parent widget | |
233 | * @param x column relative to parent | |
234 | * @param y row relative to parent | |
235 | */ | |
236 | public TTerminalWidget(final TWidget parent, final int x, final int y) { | |
237 | ||
238 | super(parent, x, y, 80, 24); | |
239 | ||
240 | if (System.getProperty("jexer.TTerminal.shell") != null) { | |
241 | String shell = System.getProperty("jexer.TTerminal.shell"); | |
242 | if (shell.trim().startsWith("ptypipe")) { | |
243 | ptypipe = true; | |
244 | } | |
245 | spawnShell(shell.split("\\s+")); | |
246 | return; | |
247 | } | |
248 | ||
249 | String cmdShellWindows = "cmd.exe"; | |
250 | ||
251 | // You cannot run a login shell in a bare Process interactively, due | |
252 | // to libc's behavior of buffering when stdin/stdout aren't a tty. | |
253 | // Use 'script' instead to run a shell in a pty. And because BSD and | |
254 | // GNU differ on the '-f' vs '-F' flags, we need two different | |
255 | // commands. Lovely. | |
256 | String cmdShellGNU = "script -fqe /dev/null"; | |
257 | String cmdShellBSD = "script -q -F /dev/null"; | |
258 | ||
259 | // ptypipe is another solution that permits dynamic window resizing. | |
260 | String cmdShellPtypipe = "ptypipe /bin/bash --login"; | |
261 | ||
262 | // Spawn a shell and pass its I/O to the other constructor. | |
263 | if ((System.getProperty("jexer.TTerminal.ptypipe") != null) | |
264 | && (System.getProperty("jexer.TTerminal.ptypipe"). | |
265 | equals("true")) | |
266 | ) { | |
267 | ptypipe = true; | |
268 | spawnShell(cmdShellPtypipe.split("\\s+")); | |
269 | } else if (System.getProperty("os.name").startsWith("Windows")) { | |
270 | spawnShell(cmdShellWindows.split("\\s+")); | |
271 | } else if (System.getProperty("os.name").startsWith("Mac")) { | |
272 | spawnShell(cmdShellBSD.split("\\s+")); | |
273 | } else if (System.getProperty("os.name").startsWith("Linux")) { | |
274 | spawnShell(cmdShellGNU.split("\\s+")); | |
275 | } else { | |
276 | // When all else fails, assume GNU. | |
277 | spawnShell(cmdShellGNU.split("\\s+")); | |
278 | } | |
279 | } | |
280 | ||
281 | // ------------------------------------------------------------------------ | |
282 | // TScrollableWidget ------------------------------------------------------ | |
283 | // ------------------------------------------------------------------------ | |
284 | ||
285 | /** | |
286 | * Draw the display buffer. | |
287 | */ | |
288 | @Override | |
289 | public void draw() { | |
290 | int width = getDisplayWidth(); | |
291 | boolean syncEmulator = false; | |
292 | if ((System.currentTimeMillis() - lastUpdateTime >= 25) | |
293 | && (dirty == true) | |
294 | ) { | |
295 | // Too much time has passed, draw it all. | |
296 | syncEmulator = true; | |
297 | } else if (emulator.isReading() && (dirty == false)) { | |
298 | // Wait until the emulator has brought more data in. | |
299 | syncEmulator = false; | |
300 | } else if (!emulator.isReading() && (dirty == true)) { | |
301 | // The emulator won't receive more data, update the display. | |
302 | syncEmulator = true; | |
303 | } | |
304 | ||
305 | if ((syncEmulator == true) | |
306 | || (scrollback == null) | |
307 | || (display == null) | |
308 | ) { | |
309 | // We want to minimize the amount of time we have the emulator | |
310 | // locked. Grab a copy of its display. | |
311 | synchronized (emulator) { | |
312 | // Update the scroll bars | |
313 | reflowData(); | |
314 | ||
315 | if ((scrollback == null) || emulator.isReading()) { | |
316 | scrollback = copyBuffer(emulator.getScrollbackBuffer()); | |
317 | display = copyBuffer(emulator.getDisplayBuffer()); | |
318 | } | |
319 | width = emulator.getWidth(); | |
320 | } | |
321 | dirty = false; | |
322 | } | |
323 | ||
324 | // Draw the box using my superclass | |
325 | super.draw(); | |
326 | ||
327 | // Put together the visible rows | |
328 | int visibleHeight = getHeight(); | |
329 | int visibleBottom = scrollback.size() + display.size() | |
330 | + getVerticalValue(); | |
331 | assert (visibleBottom >= 0); | |
332 | ||
333 | List<DisplayLine> preceedingBlankLines = new ArrayList<DisplayLine>(); | |
334 | int visibleTop = visibleBottom - visibleHeight; | |
335 | if (visibleTop < 0) { | |
336 | for (int i = visibleTop; i < 0; i++) { | |
337 | preceedingBlankLines.add(emulator.getBlankDisplayLine()); | |
338 | } | |
339 | visibleTop = 0; | |
340 | } | |
341 | assert (visibleTop >= 0); | |
342 | ||
343 | List<DisplayLine> displayLines = new ArrayList<DisplayLine>(); | |
344 | displayLines.addAll(scrollback); | |
345 | displayLines.addAll(display); | |
346 | ||
347 | List<DisplayLine> visibleLines = new ArrayList<DisplayLine>(); | |
348 | visibleLines.addAll(preceedingBlankLines); | |
349 | visibleLines.addAll(displayLines.subList(visibleTop, | |
350 | visibleBottom)); | |
351 | ||
352 | visibleHeight -= visibleLines.size(); | |
353 | assert (visibleHeight >= 0); | |
354 | ||
355 | // Now draw the emulator screen | |
356 | int row = 0; | |
357 | for (DisplayLine line: visibleLines) { | |
358 | int widthMax = width; | |
359 | if (line.isDoubleWidth()) { | |
360 | widthMax /= 2; | |
361 | } | |
362 | if (widthMax > getWidth()) { | |
363 | widthMax = getWidth(); | |
364 | } | |
365 | for (int i = 0; i < widthMax; i++) { | |
366 | Cell ch = line.charAt(i); | |
367 | ||
368 | if (ch.isImage()) { | |
369 | putCharXY(i, row, ch); | |
370 | continue; | |
371 | } | |
372 | ||
373 | Cell newCell = new Cell(ch); | |
374 | boolean reverse = line.isReverseColor() ^ ch.isReverse(); | |
375 | newCell.setReverse(false); | |
376 | if (reverse) { | |
377 | if (ch.getForeColorRGB() < 0) { | |
378 | newCell.setBackColor(ch.getForeColor()); | |
379 | newCell.setBackColorRGB(-1); | |
380 | } else { | |
381 | newCell.setBackColorRGB(ch.getForeColorRGB()); | |
382 | } | |
383 | if (ch.getBackColorRGB() < 0) { | |
384 | newCell.setForeColor(ch.getBackColor()); | |
385 | newCell.setForeColorRGB(-1); | |
386 | } else { | |
387 | newCell.setForeColorRGB(ch.getBackColorRGB()); | |
388 | } | |
389 | } | |
390 | if (line.isDoubleWidth()) { | |
391 | putDoubleWidthCharXY(line, (i * 2), row, newCell); | |
392 | } else { | |
393 | putCharXY(i, row, newCell); | |
394 | } | |
395 | } | |
396 | row++; | |
397 | if (row == getHeight()) { | |
398 | // Don't overwrite the box edge | |
399 | break; | |
400 | } | |
401 | } | |
402 | CellAttributes background = new CellAttributes(); | |
403 | // Fill in the blank lines on bottom | |
404 | for (int i = 0; i < visibleHeight; i++) { | |
405 | hLineXY(0, i + row, getWidth(), ' ', background); | |
406 | } | |
407 | ||
408 | } | |
409 | ||
410 | /** | |
411 | * Handle window close. | |
412 | */ | |
413 | @Override | |
414 | public void close() { | |
415 | emulator.close(); | |
416 | if (shell != null) { | |
417 | terminateShellChildProcess(); | |
418 | shell.destroy(); | |
419 | shell = null; | |
420 | } | |
421 | } | |
422 | ||
423 | /** | |
424 | * Handle window/screen resize events. | |
425 | * | |
426 | * @param resize resize event | |
427 | */ | |
428 | @Override | |
429 | public void onResize(final TResizeEvent resize) { | |
430 | ||
431 | // Synchronize against the emulator so we don't stomp on its reader | |
432 | // thread. | |
433 | synchronized (emulator) { | |
434 | ||
435 | if (resize.getType() == TResizeEvent.Type.WIDGET) { | |
436 | // Resize the scroll bars | |
437 | reflowData(); | |
438 | placeScrollbars(); | |
439 | ||
440 | // Get out of scrollback | |
441 | setVerticalValue(0); | |
442 | ||
443 | if (ptypipe) { | |
444 | emulator.setWidth(getWidth()); | |
445 | emulator.setHeight(getHeight()); | |
446 | ||
447 | emulator.writeRemote("\033[8;" + getHeight() + ";" + | |
448 | getWidth() + "t"); | |
449 | } | |
c7a75ad3 KL |
450 | |
451 | // Pass the correct text cell width/height to the emulator | |
452 | if (getScreen() != null) { | |
453 | emulator.setTextWidth(getScreen().getTextWidth()); | |
454 | emulator.setTextHeight(getScreen().getTextHeight()); | |
455 | } | |
4d2c61b4 KL |
456 | } |
457 | return; | |
458 | ||
459 | } // synchronized (emulator) | |
460 | } | |
461 | ||
462 | /** | |
463 | * Resize scrollbars for a new width/height. | |
464 | */ | |
465 | @Override | |
466 | public void reflowData() { | |
467 | ||
468 | // Synchronize against the emulator so we don't stomp on its reader | |
469 | // thread. | |
470 | synchronized (emulator) { | |
471 | ||
472 | // Pull cursor information | |
473 | readEmulatorState(); | |
474 | ||
475 | // Vertical scrollbar | |
476 | setTopValue(getHeight() | |
477 | - (emulator.getScrollbackBuffer().size() | |
478 | + emulator.getDisplayBuffer().size())); | |
479 | setVerticalBigChange(getHeight()); | |
480 | ||
481 | } // synchronized (emulator) | |
482 | } | |
483 | ||
484 | /** | |
485 | * Handle keystrokes. | |
486 | * | |
487 | * @param keypress keystroke event | |
488 | */ | |
489 | @Override | |
490 | public void onKeypress(final TKeypressEvent keypress) { | |
491 | if (hideMouseWhenTyping) { | |
492 | typingHidMouse = true; | |
493 | } | |
494 | ||
495 | // Scrollback up/down | |
496 | if (keypress.equals(kbShiftPgUp) | |
497 | || keypress.equals(kbCtrlPgUp) | |
498 | || keypress.equals(kbAltPgUp) | |
499 | ) { | |
500 | bigVerticalDecrement(); | |
501 | return; | |
502 | } | |
503 | if (keypress.equals(kbShiftPgDn) | |
504 | || keypress.equals(kbCtrlPgDn) | |
505 | || keypress.equals(kbAltPgDn) | |
506 | ) { | |
507 | bigVerticalIncrement(); | |
508 | return; | |
509 | } | |
510 | ||
511 | if (emulator.isReading()) { | |
512 | // Get out of scrollback | |
513 | setVerticalValue(0); | |
514 | emulator.addUserEvent(keypress); | |
515 | ||
516 | // UGLY HACK TIME! cmd.exe needs CRLF, not just CR, so if | |
517 | // this is kBEnter then also send kbCtrlJ. | |
518 | if (keypress.equals(kbEnter)) { | |
519 | if (System.getProperty("os.name").startsWith("Windows") | |
520 | && (System.getProperty("jexer.TTerminal.cmdHack", | |
521 | "true").equals("true")) | |
522 | ) { | |
523 | emulator.addUserEvent(new TKeypressEvent(kbCtrlJ)); | |
524 | } | |
525 | } | |
526 | ||
527 | readEmulatorState(); | |
528 | return; | |
529 | } | |
530 | ||
531 | // Process is closed, honor "normal" TUI keystrokes | |
532 | super.onKeypress(keypress); | |
533 | } | |
534 | ||
535 | /** | |
536 | * Handle mouse press events. | |
537 | * | |
538 | * @param mouse mouse button press event | |
539 | */ | |
540 | @Override | |
541 | public void onMouseDown(final TMouseEvent mouse) { | |
542 | if (hideMouseWhenTyping) { | |
543 | typingHidMouse = false; | |
544 | } | |
545 | ||
546 | // If the emulator is tracking mouse buttons, it needs to see wheel | |
547 | // events. | |
548 | if (emulator.getMouseProtocol() == ECMA48.MouseProtocol.OFF) { | |
549 | if (mouse.isMouseWheelUp()) { | |
550 | verticalDecrement(); | |
551 | return; | |
552 | } | |
553 | if (mouse.isMouseWheelDown()) { | |
554 | verticalIncrement(); | |
555 | return; | |
556 | } | |
557 | } | |
558 | if (mouseOnEmulator(mouse)) { | |
559 | emulator.addUserEvent(mouse); | |
560 | readEmulatorState(); | |
561 | return; | |
562 | } | |
563 | ||
564 | // Emulator didn't consume it, pass it on | |
565 | super.onMouseDown(mouse); | |
566 | } | |
567 | ||
568 | /** | |
569 | * Handle mouse release events. | |
570 | * | |
571 | * @param mouse mouse button release event | |
572 | */ | |
573 | @Override | |
574 | public void onMouseUp(final TMouseEvent mouse) { | |
575 | if (hideMouseWhenTyping) { | |
576 | typingHidMouse = false; | |
577 | } | |
578 | ||
579 | if (mouseOnEmulator(mouse)) { | |
580 | emulator.addUserEvent(mouse); | |
581 | readEmulatorState(); | |
582 | return; | |
583 | } | |
584 | ||
585 | // Emulator didn't consume it, pass it on | |
586 | super.onMouseUp(mouse); | |
587 | } | |
588 | ||
589 | /** | |
590 | * Handle mouse motion events. | |
591 | * | |
592 | * @param mouse mouse motion event | |
593 | */ | |
594 | @Override | |
595 | public void onMouseMotion(final TMouseEvent mouse) { | |
596 | if (hideMouseWhenTyping) { | |
597 | typingHidMouse = false; | |
598 | } | |
599 | ||
600 | if (mouseOnEmulator(mouse)) { | |
601 | emulator.addUserEvent(mouse); | |
602 | readEmulatorState(); | |
603 | return; | |
604 | } | |
605 | ||
606 | // Emulator didn't consume it, pass it on | |
607 | super.onMouseMotion(mouse); | |
608 | } | |
609 | ||
610 | // ------------------------------------------------------------------------ | |
611 | // TTerminalWidget -------------------------------------------------------- | |
612 | // ------------------------------------------------------------------------ | |
613 | ||
614 | /** | |
615 | * Get the desired window title. | |
616 | * | |
617 | * @return the title | |
618 | */ | |
619 | public String getTitle() { | |
620 | return title; | |
621 | } | |
622 | ||
623 | /** | |
624 | * Returns true if this window does not want the application-wide mouse | |
625 | * cursor drawn over it. | |
626 | * | |
627 | * @return true if this window does not want the application-wide mouse | |
628 | * cursor drawn over it | |
629 | */ | |
630 | public boolean hasHiddenMouse() { | |
631 | return (emulator.hasHiddenMousePointer() || typingHidMouse); | |
632 | } | |
633 | ||
634 | /** | |
635 | * See if the terminal is still running. | |
636 | * | |
637 | * @return if true, we are still connected to / reading from the remote | |
638 | * side | |
639 | */ | |
640 | public boolean isReading() { | |
641 | return emulator.isReading(); | |
642 | } | |
643 | ||
644 | /** | |
645 | * Convert a string array to a whitespace-separated string. | |
646 | * | |
647 | * @param array the string array | |
648 | * @return a single string | |
649 | */ | |
650 | private String stringArrayToString(final String [] array) { | |
651 | StringBuilder sb = new StringBuilder(array[0].length()); | |
652 | for (int i = 0; i < array.length; i++) { | |
653 | sb.append(array[i]); | |
654 | if (i < array.length - 1) { | |
655 | sb.append(' '); | |
656 | } | |
657 | } | |
658 | return sb.toString(); | |
659 | } | |
660 | ||
661 | /** | |
662 | * Spawn the shell. | |
663 | * | |
664 | * @param command the command line to execute | |
665 | */ | |
666 | private void spawnShell(final String [] command) { | |
667 | ||
668 | /* | |
669 | System.err.printf("spawnShell(): '%s'\n", | |
670 | stringArrayToString(command)); | |
671 | */ | |
672 | ||
673 | // We will have vScroller for its data fields and mouse event | |
674 | // handling, but do not want to draw it. | |
675 | vScroller = new TVScroller(null, getWidth(), 0, getHeight()); | |
676 | vScroller.setVisible(false); | |
677 | setBottomValue(0); | |
678 | ||
679 | title = i18n.getString("windowTitle"); | |
680 | ||
681 | // Assume XTERM | |
682 | ECMA48.DeviceType deviceType = ECMA48.DeviceType.XTERM; | |
683 | ||
684 | try { | |
685 | ProcessBuilder pb = new ProcessBuilder(command); | |
686 | Map<String, String> env = pb.environment(); | |
687 | env.put("TERM", ECMA48.deviceTypeTerm(deviceType)); | |
688 | env.put("LANG", ECMA48.deviceTypeLang(deviceType, "en")); | |
689 | env.put("COLUMNS", "80"); | |
690 | env.put("LINES", "24"); | |
691 | pb.redirectErrorStream(true); | |
692 | shell = pb.start(); | |
693 | emulator = new ECMA48(deviceType, shell.getInputStream(), | |
694 | shell.getOutputStream(), this); | |
695 | } catch (IOException e) { | |
696 | messageBox(i18n.getString("errorLaunchingShellTitle"), | |
697 | MessageFormat.format(i18n.getString("errorLaunchingShellText"), | |
698 | e.getMessage())); | |
699 | } | |
700 | ||
701 | // Setup the scroll bars | |
702 | onResize(new TResizeEvent(TResizeEvent.Type.WIDGET, getWidth(), | |
703 | getHeight())); | |
704 | ||
4d2c61b4 KL |
705 | // Hide mouse when typing option |
706 | if (System.getProperty("jexer.TTerminal.hideMouseWhenTyping", | |
707 | "true").equals("false")) { | |
708 | ||
709 | hideMouseWhenTyping = false; | |
710 | } | |
711 | } | |
712 | ||
713 | /** | |
714 | * Terminate the child of the 'script' process used on POSIX. This may | |
715 | * or may not work. | |
716 | */ | |
717 | private void terminateShellChildProcess() { | |
718 | int pid = -1; | |
719 | if (shell.getClass().getName().equals("java.lang.UNIXProcess")) { | |
720 | /* get the PID on unix/linux systems */ | |
721 | try { | |
722 | Field field = shell.getClass().getDeclaredField("pid"); | |
723 | field.setAccessible(true); | |
724 | pid = field.getInt(shell); | |
725 | } catch (Throwable e) { | |
726 | // SQUASH, this didn't work. Just bail out quietly. | |
727 | return; | |
728 | } | |
729 | } | |
730 | if (pid != -1) { | |
731 | // shell.destroy() works successfully at killing this side of | |
732 | // 'script'. But we need to make sure the other side (child | |
733 | // process) is also killed. | |
734 | String [] cmdKillIt = { | |
735 | "pkill", "-P", Integer.toString(pid) | |
736 | }; | |
737 | try { | |
738 | Runtime.getRuntime().exec(cmdKillIt); | |
739 | } catch (Throwable e) { | |
740 | // SQUASH, this didn't work. Just bail out quietly. | |
741 | return; | |
742 | } | |
743 | } | |
744 | } | |
745 | ||
746 | /** | |
747 | * Hook for subclasses to be notified of the shell termination. | |
748 | */ | |
749 | public void onShellExit() { | |
750 | if (getParent() instanceof TTerminalWindow) { | |
751 | ((TTerminalWindow) getParent()).onShellExit(); | |
752 | } | |
753 | getApplication().postEvent(new TMenuEvent(TMenu.MID_REPAINT)); | |
754 | } | |
755 | ||
756 | /** | |
757 | * Copy out variables from the emulator that TTerminal has to expose on | |
758 | * screen. | |
759 | */ | |
760 | private void readEmulatorState() { | |
761 | // Synchronize against the emulator so we don't stomp on its reader | |
762 | // thread. | |
763 | synchronized (emulator) { | |
764 | ||
765 | setCursorX(emulator.getCursorX()); | |
766 | setCursorY(emulator.getCursorY() | |
767 | + (getHeight() - emulator.getHeight()) | |
768 | - getVerticalValue()); | |
769 | setCursorVisible(emulator.isCursorVisible()); | |
770 | if (getCursorX() > getWidth()) { | |
771 | setCursorVisible(false); | |
772 | } | |
773 | if ((getCursorY() >= getHeight()) || (getCursorY() < 0)) { | |
774 | setCursorVisible(false); | |
775 | } | |
776 | if (emulator.getScreenTitle().length() > 0) { | |
777 | // Only update the title if the shell is still alive | |
778 | if (shell != null) { | |
779 | title = emulator.getScreenTitle(); | |
780 | } | |
781 | } | |
782 | ||
783 | // Check to see if the shell has died. | |
784 | if (!emulator.isReading() && (shell != null)) { | |
785 | try { | |
786 | int rc = shell.exitValue(); | |
787 | // The emulator exited on its own, all is fine | |
788 | title = MessageFormat.format(i18n. | |
789 | getString("windowTitleCompleted"), title, rc); | |
790 | exitValue = rc; | |
791 | shell = null; | |
792 | emulator.close(); | |
793 | onShellExit(); | |
794 | } catch (IllegalThreadStateException e) { | |
795 | // The emulator thread has exited, but the shell Process | |
796 | // hasn't figured that out yet. Do nothing, we will see | |
797 | // this in a future tick. | |
798 | } | |
799 | } else if (emulator.isReading() && (shell != null)) { | |
800 | // The shell might be dead, let's check | |
801 | try { | |
802 | int rc = shell.exitValue(); | |
803 | // If we got here, the shell died. | |
804 | title = MessageFormat.format(i18n. | |
805 | getString("windowTitleCompleted"), title, rc); | |
806 | exitValue = rc; | |
807 | shell = null; | |
808 | emulator.close(); | |
809 | onShellExit(); | |
810 | } catch (IllegalThreadStateException e) { | |
811 | // The shell is still running, do nothing. | |
812 | } | |
813 | } | |
814 | ||
815 | } // synchronized (emulator) | |
816 | } | |
817 | ||
818 | /** | |
819 | * Check if a mouse press/release/motion event coordinate is over the | |
820 | * emulator. | |
821 | * | |
822 | * @param mouse a mouse-based event | |
823 | * @return whether or not the mouse is on the emulator | |
824 | */ | |
825 | private boolean mouseOnEmulator(final TMouseEvent mouse) { | |
826 | ||
827 | if (!emulator.isReading()) { | |
828 | return false; | |
829 | } | |
830 | ||
831 | if ((mouse.getX() >= 0) | |
832 | && (mouse.getX() < getWidth() - 1) | |
833 | && (mouse.getY() >= 0) | |
834 | && (mouse.getY() < getHeight()) | |
835 | ) { | |
836 | return true; | |
837 | } | |
838 | return false; | |
839 | } | |
840 | ||
841 | /** | |
842 | * Copy a display buffer. | |
843 | * | |
844 | * @param buffer the buffer to copy | |
845 | * @return a deep copy of the buffer's data | |
846 | */ | |
847 | private List<DisplayLine> copyBuffer(final List<DisplayLine> buffer) { | |
848 | ArrayList<DisplayLine> result = new ArrayList<DisplayLine>(buffer.size()); | |
849 | for (DisplayLine line: buffer) { | |
850 | result.add(new DisplayLine(line)); | |
851 | } | |
852 | return result; | |
853 | } | |
854 | ||
855 | /** | |
856 | * Draw glyphs for a double-width or double-height VT100 cell to two | |
857 | * screen cells. | |
858 | * | |
859 | * @param line the line this VT100 cell is in | |
860 | * @param x the X position to draw the left half to | |
861 | * @param y the Y position to draw to | |
862 | * @param cell the cell to draw | |
863 | */ | |
864 | private void putDoubleWidthCharXY(final DisplayLine line, final int x, | |
865 | final int y, final Cell cell) { | |
866 | ||
867 | int textWidth = getScreen().getTextWidth(); | |
868 | int textHeight = getScreen().getTextHeight(); | |
869 | boolean cursorBlinkVisible = true; | |
870 | ||
871 | if (getScreen() instanceof SwingTerminal) { | |
872 | SwingTerminal terminal = (SwingTerminal) getScreen(); | |
873 | cursorBlinkVisible = terminal.getCursorBlinkVisible(); | |
874 | } else if (getScreen() instanceof ECMA48Terminal) { | |
875 | ECMA48Terminal terminal = (ECMA48Terminal) getScreen(); | |
876 | ||
877 | if (!terminal.hasSixel()) { | |
878 | // The backend does not have sixel support, draw this as text | |
879 | // and bail out. | |
880 | putCharXY(x, y, cell); | |
881 | putCharXY(x + 1, y, ' ', cell); | |
882 | return; | |
883 | } | |
884 | cursorBlinkVisible = blinkState; | |
885 | } else { | |
886 | // We don't know how to dray glyphs to this screen, draw them as | |
887 | // text and bail out. | |
888 | putCharXY(x, y, cell); | |
889 | putCharXY(x + 1, y, ' ', cell); | |
890 | return; | |
891 | } | |
892 | ||
893 | if ((textWidth != lastTextWidth) || (textHeight != lastTextHeight)) { | |
894 | // Screen size has changed, reset the font. | |
895 | setupFont(textHeight); | |
896 | lastTextWidth = textWidth; | |
897 | lastTextHeight = textHeight; | |
898 | } | |
899 | assert (doubleFont != null); | |
900 | ||
901 | BufferedImage image; | |
902 | if (line.getDoubleHeight() == 1) { | |
903 | // Double-height top half: don't draw the underline. | |
904 | Cell newCell = new Cell(cell); | |
905 | newCell.setUnderline(false); | |
906 | image = doubleFont.getImage(newCell, textWidth * 2, textHeight * 2, | |
907 | cursorBlinkVisible); | |
908 | } else { | |
909 | image = doubleFont.getImage(cell, textWidth * 2, textHeight * 2, | |
910 | cursorBlinkVisible); | |
911 | } | |
912 | ||
913 | // Now that we have the double-wide glyph drawn, copy the right | |
914 | // pieces of it to the cells. | |
915 | Cell left = new Cell(cell); | |
916 | Cell right = new Cell(cell); | |
917 | right.setChar(' '); | |
918 | BufferedImage leftImage = null; | |
919 | BufferedImage rightImage = null; | |
920 | /* | |
921 | System.err.println("image " + image + " textWidth " + textWidth + | |
922 | " textHeight " + textHeight); | |
923 | */ | |
924 | ||
925 | switch (line.getDoubleHeight()) { | |
926 | case 1: | |
927 | // Top half double height | |
928 | leftImage = image.getSubimage(0, 0, textWidth, textHeight); | |
929 | rightImage = image.getSubimage(textWidth, 0, textWidth, textHeight); | |
930 | break; | |
931 | case 2: | |
932 | // Bottom half double height | |
933 | leftImage = image.getSubimage(0, textHeight, textWidth, textHeight); | |
934 | rightImage = image.getSubimage(textWidth, textHeight, | |
935 | textWidth, textHeight); | |
936 | break; | |
937 | default: | |
938 | // Either single height double-width, or error fallback | |
939 | BufferedImage wideImage = new BufferedImage(textWidth * 2, | |
940 | textHeight, BufferedImage.TYPE_INT_ARGB); | |
941 | Graphics2D grWide = wideImage.createGraphics(); | |
942 | grWide.drawImage(image, 0, 0, wideImage.getWidth(), | |
943 | wideImage.getHeight(), null); | |
944 | grWide.dispose(); | |
945 | leftImage = wideImage.getSubimage(0, 0, textWidth, textHeight); | |
946 | rightImage = wideImage.getSubimage(textWidth, 0, textWidth, | |
947 | textHeight); | |
948 | break; | |
949 | } | |
950 | left.setImage(leftImage); | |
951 | right.setImage(rightImage); | |
952 | // Since we have image data, ditch the character here. Otherwise, a | |
953 | // drawBoxShadow() over the terminal window will show the characters | |
954 | // which looks wrong. | |
955 | left.setChar(' '); | |
956 | right.setChar(' '); | |
957 | putCharXY(x, y, left); | |
958 | putCharXY(x + 1, y, right); | |
959 | } | |
960 | ||
961 | /** | |
962 | * Set up the double-width font. | |
963 | * | |
964 | * @param fontSize the size of font to request for the single-width font. | |
965 | * The double-width font will be 2x this value. | |
966 | */ | |
967 | private void setupFont(final int fontSize) { | |
968 | doubleFont = GlyphMaker.getInstance(fontSize * 2); | |
969 | ||
970 | // Special case: the ECMA48 backend needs to have a timer to drive | |
971 | // its blink state. | |
972 | if (getScreen() instanceof jexer.backend.ECMA48Terminal) { | |
973 | if (!haveTimer) { | |
974 | // Blink every 500 millis. | |
975 | long millis = 500; | |
976 | getApplication().addTimer(millis, true, | |
977 | new TAction() { | |
978 | public void DO() { | |
979 | blinkState = !blinkState; | |
980 | getApplication().doRepaint(); | |
981 | } | |
982 | } | |
983 | ); | |
984 | haveTimer = true; | |
985 | } | |
986 | } | |
987 | } | |
988 | ||
989 | // ------------------------------------------------------------------------ | |
990 | // DisplayListener -------------------------------------------------------- | |
991 | // ------------------------------------------------------------------------ | |
992 | ||
993 | /** | |
994 | * Called by emulator when fresh data has come in. | |
995 | */ | |
996 | public void displayChanged() { | |
997 | dirty = true; | |
998 | getApplication().postEvent(new TMenuEvent(TMenu.MID_REPAINT)); | |
999 | } | |
1000 | ||
1001 | /** | |
1002 | * Function to call to obtain the display width. | |
1003 | * | |
1004 | * @return the number of columns in the display | |
1005 | */ | |
1006 | public int getDisplayWidth() { | |
1007 | if (ptypipe) { | |
1008 | return getWidth(); | |
1009 | } | |
1010 | return 80; | |
1011 | } | |
1012 | ||
1013 | /** | |
1014 | * Function to call to obtain the display height. | |
1015 | * | |
1016 | * @return the number of rows in the display | |
1017 | */ | |
1018 | public int getDisplayHeight() { | |
1019 | if (ptypipe) { | |
1020 | return getHeight(); | |
1021 | } | |
1022 | return 24; | |
1023 | } | |
1024 | ||
1025 | } |