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df8de03f KL |
1 | /** |
2 | * Jexer - Java Text User Interface | |
3 | * | |
df8de03f KL |
4 | * License: LGPLv3 or later |
5 | * | |
7b5261bc KL |
6 | * This module is licensed under the GNU Lesser General Public License |
7 | * Version 3. Please see the file "COPYING" in this directory for more | |
8 | * information about the GNU Lesser General Public License Version 3. | |
df8de03f KL |
9 | * |
10 | * Copyright (C) 2015 Kevin Lamonte | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or | |
13 | * modify it under the terms of the GNU Lesser General Public License | |
14 | * as published by the Free Software Foundation; either version 3 of | |
15 | * the License, or (at your option) any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, but | |
18 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
20 | * General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU Lesser General Public | |
23 | * License along with this program; if not, see | |
24 | * http://www.gnu.org/licenses/, or write to the Free Software | |
25 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | |
26 | * 02110-1301 USA | |
7b5261bc KL |
27 | * |
28 | * @author Kevin Lamonte [kevin.lamonte@gmail.com] | |
29 | * @version 1 | |
df8de03f KL |
30 | */ |
31 | package jexer.io; | |
32 | ||
33 | import jexer.bits.Cell; | |
34 | import jexer.bits.CellAttributes; | |
35 | import jexer.bits.GraphicsChars; | |
36 | ||
37 | /** | |
38 | * This class represents a text-based screen. Drawing operations write to a | |
39 | * logical screen. | |
40 | */ | |
41 | public abstract class Screen { | |
42 | ||
43 | /** | |
7b5261bc | 44 | * Width of the visible window. |
df8de03f KL |
45 | */ |
46 | protected int width; | |
47 | ||
48 | /** | |
7b5261bc | 49 | * Height of the visible window. |
df8de03f KL |
50 | */ |
51 | protected int height; | |
52 | ||
53 | /** | |
7b5261bc | 54 | * Drawing offset for x. |
df8de03f | 55 | */ |
48e27807 KL |
56 | protected int offsetX; |
57 | ||
58 | /** | |
59 | * Set drawing offset for x. | |
60 | * | |
61 | * @param offsetX new drawing offset | |
62 | */ | |
63 | public final void setOffsetX(final int offsetX) { | |
64 | this.offsetX = offsetX; | |
65 | } | |
df8de03f KL |
66 | |
67 | /** | |
7b5261bc | 68 | * Drawing offset for y. |
df8de03f | 69 | */ |
48e27807 | 70 | protected int offsetY; |
df8de03f | 71 | |
48e27807 KL |
72 | /** |
73 | * Set drawing offset for y. | |
74 | * | |
75 | * @param offsetY new drawing offset | |
76 | */ | |
77 | public final void setOffsetY(final int offsetY) { | |
78 | this.offsetY = offsetY; | |
79 | } | |
80 | ||
df8de03f | 81 | /** |
7b5261bc | 82 | * Ignore anything drawn right of clipRight. |
df8de03f | 83 | */ |
48e27807 KL |
84 | protected int clipRight; |
85 | ||
86 | /** | |
87 | * Get right drawing clipping boundary. | |
88 | * | |
89 | * @return drawing boundary | |
90 | */ | |
91 | public final int getClipRight() { | |
92 | return clipRight; | |
93 | } | |
94 | ||
95 | /** | |
96 | * Set right drawing clipping boundary. | |
97 | * | |
98 | * @param clipRight new boundary | |
99 | */ | |
100 | public final void setClipRight(final int clipRight) { | |
101 | this.clipRight = clipRight; | |
102 | } | |
df8de03f KL |
103 | |
104 | /** | |
7b5261bc | 105 | * Ignore anything drawn below clipBottom. |
df8de03f | 106 | */ |
48e27807 KL |
107 | protected int clipBottom; |
108 | ||
109 | /** | |
110 | * Get bottom drawing clipping boundary. | |
111 | * | |
112 | * @return drawing boundary | |
113 | */ | |
114 | public final int getClipBottom() { | |
115 | return clipBottom; | |
116 | } | |
117 | ||
118 | /** | |
119 | * Set bottom drawing clipping boundary. | |
120 | * | |
121 | * @param clipBottom new boundary | |
122 | */ | |
123 | public final void setClipBottom(final int clipBottom) { | |
124 | this.clipBottom = clipBottom; | |
125 | } | |
df8de03f KL |
126 | |
127 | /** | |
7b5261bc | 128 | * Ignore anything drawn left of clipLeft. |
df8de03f | 129 | */ |
48e27807 KL |
130 | protected int clipLeft; |
131 | ||
132 | /** | |
133 | * Get left drawing clipping boundary. | |
134 | * | |
135 | * @return drawing boundary | |
136 | */ | |
137 | public final int getClipLeft() { | |
138 | return clipLeft; | |
139 | } | |
140 | ||
141 | /** | |
142 | * Set left drawing clipping boundary. | |
143 | * | |
144 | * @param clipLeft new boundary | |
145 | */ | |
146 | public final void setClipLeft(final int clipLeft) { | |
147 | this.clipLeft = clipLeft; | |
148 | } | |
df8de03f KL |
149 | |
150 | /** | |
7b5261bc | 151 | * Ignore anything drawn above clipTop. |
df8de03f | 152 | */ |
48e27807 KL |
153 | protected int clipTop; |
154 | ||
155 | /** | |
156 | * Get top drawing clipping boundary. | |
157 | * | |
158 | * @return drawing boundary | |
159 | */ | |
160 | public final int getClipTop() { | |
161 | return clipTop; | |
162 | } | |
163 | ||
164 | /** | |
165 | * Set top drawing clipping boundary. | |
166 | * | |
167 | * @param clipTop new boundary | |
168 | */ | |
169 | public final void setClipTop(final int clipTop) { | |
170 | this.clipTop = clipTop; | |
171 | } | |
df8de03f KL |
172 | |
173 | /** | |
7b5261bc | 174 | * The physical screen last sent out on flush(). |
df8de03f KL |
175 | */ |
176 | protected Cell [][] physical; | |
177 | ||
178 | /** | |
7b5261bc | 179 | * The logical screen being rendered to. |
df8de03f KL |
180 | */ |
181 | protected Cell [][] logical; | |
182 | ||
183 | /** | |
7b5261bc | 184 | * When true, logical != physical. |
df8de03f | 185 | */ |
48e27807 | 186 | protected boolean dirty; |
df8de03f KL |
187 | |
188 | /** | |
189 | * Set if the user explicitly wants to redraw everything starting with a | |
7b5261bc | 190 | * ECMATerminal.clearAll(). |
df8de03f KL |
191 | */ |
192 | protected boolean reallyCleared; | |
193 | ||
194 | /** | |
195 | * If true, the cursor is visible and should be placed onscreen at | |
7b5261bc | 196 | * (cursorX, cursorY) during a call to flushPhysical(). |
df8de03f KL |
197 | */ |
198 | protected boolean cursorVisible; | |
199 | ||
200 | /** | |
7b5261bc | 201 | * Cursor X position if visible. |
df8de03f KL |
202 | */ |
203 | protected int cursorX; | |
204 | ||
205 | /** | |
7b5261bc | 206 | * Cursor Y position if visible. |
df8de03f KL |
207 | */ |
208 | protected int cursorY; | |
209 | ||
210 | /** | |
211 | * Get the attributes at one location. | |
212 | * | |
213 | * @param x column coordinate. 0 is the left-most column. | |
214 | * @param y row coordinate. 0 is the top-most row. | |
215 | * @return attributes at (x, y) | |
216 | */ | |
7b5261bc KL |
217 | public CellAttributes getAttrXY(final int x, final int y) { |
218 | CellAttributes attr = new CellAttributes(); | |
219 | attr.setTo(logical[x][y]); | |
220 | return attr; | |
df8de03f KL |
221 | } |
222 | ||
223 | /** | |
224 | * Set the attributes at one location. | |
225 | * | |
226 | * @param x column coordinate. 0 is the left-most column. | |
227 | * @param y row coordinate. 0 is the top-most row. | |
228 | * @param attr attributes to use (bold, foreColor, backColor) | |
df8de03f | 229 | */ |
7b5261bc KL |
230 | public void putAttrXY(final int x, final int y, final CellAttributes attr) { |
231 | putAttrXY(x, y, attr, true); | |
df8de03f | 232 | } |
7b5261bc | 233 | |
df8de03f KL |
234 | /** |
235 | * Set the attributes at one location. | |
236 | * | |
237 | * @param x column coordinate. 0 is the left-most column. | |
238 | * @param y row coordinate. 0 is the top-most row. | |
239 | * @param attr attributes to use (bold, foreColor, backColor) | |
240 | * @param clip if true, honor clipping/offset | |
241 | */ | |
7b5261bc KL |
242 | public void putAttrXY(final int x, final int y, final CellAttributes attr, |
243 | final boolean clip) { | |
244 | ||
245 | int X = x; | |
246 | int Y = y; | |
247 | ||
248 | if (clip) { | |
249 | if ((x < clipLeft) | |
250 | || (x >= clipRight) | |
251 | || (y < clipTop) | |
252 | || (y >= clipBottom) | |
253 | ) { | |
254 | return; | |
255 | } | |
256 | X += offsetX; | |
257 | Y += offsetY; | |
258 | } | |
259 | ||
260 | if ((X >= 0) && (X < width) && (Y >= 0) && (Y < height)) { | |
261 | dirty = true; | |
262 | logical[X][Y].setForeColor(attr.getForeColor()); | |
263 | logical[X][Y].setBackColor(attr.getBackColor()); | |
264 | logical[X][Y].setBold(attr.getBold()); | |
265 | logical[X][Y].setBlink(attr.getBlink()); | |
266 | logical[X][Y].setReverse(attr.getReverse()); | |
267 | logical[X][Y].setUnderline(attr.getUnderline()); | |
268 | logical[X][Y].setProtect(attr.getProtect()); | |
269 | } | |
df8de03f KL |
270 | } |
271 | ||
272 | /** | |
273 | * Fill the entire screen with one character with attributes. | |
274 | * | |
275 | * @param ch character to draw | |
276 | * @param attr attributes to use (bold, foreColor, backColor) | |
277 | */ | |
7b5261bc KL |
278 | public void putAll(final char ch, final CellAttributes attr) { |
279 | for (int x = 0; x < width; x++) { | |
280 | for (int y = 0; y < height; y++) { | |
281 | putCharXY(x, y, ch, attr); | |
282 | } | |
283 | } | |
df8de03f KL |
284 | } |
285 | ||
286 | /** | |
287 | * Render one character with attributes. | |
288 | * | |
289 | * @param x column coordinate. 0 is the left-most column. | |
290 | * @param y row coordinate. 0 is the top-most row. | |
291 | * @param ch character + attributes to draw | |
292 | */ | |
7b5261bc KL |
293 | public void putCharXY(final int x, final int y, final Cell ch) { |
294 | putCharXY(x, y, ch.getChar(), ch); | |
df8de03f KL |
295 | } |
296 | ||
297 | /** | |
298 | * Render one character with attributes. | |
299 | * | |
300 | * @param x column coordinate. 0 is the left-most column. | |
301 | * @param y row coordinate. 0 is the top-most row. | |
302 | * @param ch character to draw | |
303 | * @param attr attributes to use (bold, foreColor, backColor) | |
304 | */ | |
7b5261bc KL |
305 | public void putCharXY(final int x, final int y, final char ch, |
306 | final CellAttributes attr) { | |
307 | ||
308 | if ((x < clipLeft) | |
309 | || (x >= clipRight) | |
310 | || (y < clipTop) | |
311 | || (y >= clipBottom) | |
312 | ) { | |
313 | return; | |
314 | } | |
315 | ||
316 | int X = x + offsetX; | |
317 | int Y = y + offsetY; | |
318 | ||
319 | // System.err.printf("putCharXY: %d, %d, %c\n", X, Y, ch); | |
320 | ||
321 | if ((X >= 0) && (X < width) && (Y >= 0) && (Y < height)) { | |
322 | dirty = true; | |
323 | ||
324 | // Do not put control characters on the display | |
325 | assert (ch >= 0x20); | |
326 | assert (ch != 0x7F); | |
327 | ||
328 | logical[X][Y].setChar(ch); | |
329 | logical[X][Y].setForeColor(attr.getForeColor()); | |
330 | logical[X][Y].setBackColor(attr.getBackColor()); | |
331 | logical[X][Y].setBold(attr.getBold()); | |
332 | logical[X][Y].setBlink(attr.getBlink()); | |
333 | logical[X][Y].setReverse(attr.getReverse()); | |
334 | logical[X][Y].setUnderline(attr.getUnderline()); | |
335 | logical[X][Y].setProtect(attr.getProtect()); | |
336 | } | |
df8de03f KL |
337 | } |
338 | ||
339 | /** | |
340 | * Render one character without changing the underlying attributes. | |
341 | * | |
342 | * @param x column coordinate. 0 is the left-most column. | |
343 | * @param y row coordinate. 0 is the top-most row. | |
344 | * @param ch character to draw | |
345 | */ | |
7b5261bc KL |
346 | public void putCharXY(final int x, final int y, final char ch) { |
347 | if ((x < clipLeft) | |
348 | || (x >= clipRight) | |
349 | || (y < clipTop) | |
350 | || (y >= clipBottom) | |
351 | ) { | |
352 | return; | |
353 | } | |
df8de03f | 354 | |
7b5261bc KL |
355 | int X = x + offsetX; |
356 | int Y = y + offsetY; | |
df8de03f | 357 | |
7b5261bc | 358 | // System.err.printf("putCharXY: %d, %d, %c\n", X, Y, ch); |
df8de03f | 359 | |
7b5261bc KL |
360 | if ((X >= 0) && (X < width) && (Y >= 0) && (Y < height)) { |
361 | dirty = true; | |
362 | logical[X][Y].setChar(ch); | |
363 | } | |
df8de03f KL |
364 | } |
365 | ||
366 | /** | |
367 | * Render a string. Does not wrap if the string exceeds the line. | |
368 | * | |
369 | * @param x column coordinate. 0 is the left-most column. | |
370 | * @param y row coordinate. 0 is the top-most row. | |
371 | * @param str string to draw | |
372 | * @param attr attributes to use (bold, foreColor, backColor) | |
373 | */ | |
7b5261bc KL |
374 | public void putStrXY(final int x, final int y, final String str, |
375 | final CellAttributes attr) { | |
376 | ||
377 | int i = x; | |
378 | for (int j = 0; j < str.length(); j++) { | |
379 | char ch = str.charAt(j); | |
380 | putCharXY(i, y, ch, attr); | |
381 | i++; | |
382 | if (i == width) { | |
383 | break; | |
384 | } | |
385 | } | |
df8de03f KL |
386 | } |
387 | ||
388 | /** | |
389 | * Render a string without changing the underlying attribute. Does not | |
390 | * wrap if the string exceeds the line. | |
391 | * | |
392 | * @param x column coordinate. 0 is the left-most column. | |
393 | * @param y row coordinate. 0 is the top-most row. | |
394 | * @param str string to draw | |
395 | */ | |
7b5261bc KL |
396 | public void putStrXY(final int x, final int y, final String str) { |
397 | int i = x; | |
398 | for (int j = 0; j < str.length(); j++) { | |
399 | char ch = str.charAt(j); | |
400 | putCharXY(i, y, ch); | |
401 | i++; | |
402 | if (i == width) { | |
403 | break; | |
404 | } | |
405 | } | |
df8de03f KL |
406 | } |
407 | ||
408 | /** | |
7b5261bc | 409 | * Draw a vertical line from (x, y) to (x, y + n). |
df8de03f KL |
410 | * |
411 | * @param x column coordinate. 0 is the left-most column. | |
412 | * @param y row coordinate. 0 is the top-most row. | |
413 | * @param n number of characters to draw | |
414 | * @param ch character to draw | |
415 | * @param attr attributes to use (bold, foreColor, backColor) | |
416 | */ | |
7b5261bc KL |
417 | public void vLineXY(final int x, final int y, final int n, final char ch, |
418 | final CellAttributes attr) { | |
419 | ||
420 | for (int i = y; i < y + n; i++) { | |
421 | putCharXY(x, i, ch, attr); | |
422 | } | |
df8de03f KL |
423 | } |
424 | ||
425 | /** | |
7b5261bc | 426 | * Draw a horizontal line from (x, y) to (x + n, y). |
df8de03f KL |
427 | * |
428 | * @param x column coordinate. 0 is the left-most column. | |
429 | * @param y row coordinate. 0 is the top-most row. | |
430 | * @param n number of characters to draw | |
431 | * @param ch character to draw | |
432 | * @param attr attributes to use (bold, foreColor, backColor) | |
433 | */ | |
7b5261bc KL |
434 | public void hLineXY(final int x, final int y, final int n, final char ch, |
435 | final CellAttributes attr) { | |
436 | ||
437 | for (int i = x; i < x + n; i++) { | |
438 | putCharXY(i, y, ch, attr); | |
439 | } | |
df8de03f KL |
440 | } |
441 | ||
442 | /** | |
443 | * Reallocate screen buffers. | |
444 | * | |
445 | * @param width new width | |
446 | * @param height new height | |
447 | */ | |
7b5261bc KL |
448 | private void reallocate(final int width, final int height) { |
449 | if (logical != null) { | |
450 | for (int row = 0; row < this.height; row++) { | |
451 | for (int col = 0; col < this.width; col++) { | |
452 | logical[col][row] = null; | |
453 | } | |
454 | } | |
455 | logical = null; | |
456 | } | |
457 | logical = new Cell[width][height]; | |
458 | if (physical != null) { | |
459 | for (int row = 0; row < this.height; row++) { | |
460 | for (int col = 0; col < this.width; col++) { | |
461 | physical[col][row] = null; | |
462 | } | |
463 | } | |
464 | physical = null; | |
465 | } | |
466 | physical = new Cell[width][height]; | |
467 | ||
468 | for (int row = 0; row < height; row++) { | |
469 | for (int col = 0; col < width; col++) { | |
470 | physical[col][row] = new Cell(); | |
471 | logical[col][row] = new Cell(); | |
472 | } | |
473 | } | |
474 | ||
475 | this.width = width; | |
476 | this.height = height; | |
477 | ||
478 | clipLeft = 0; | |
479 | clipTop = 0; | |
480 | clipRight = width; | |
481 | clipBottom = height; | |
482 | ||
483 | reallyCleared = true; | |
484 | dirty = true; | |
df8de03f KL |
485 | } |
486 | ||
487 | /** | |
488 | * Change the width. Everything on-screen will be destroyed and must be | |
489 | * redrawn. | |
7b5261bc | 490 | * |
df8de03f KL |
491 | * @param width new screen width |
492 | */ | |
7b5261bc KL |
493 | public void setWidth(final int width) { |
494 | reallocate(width, this.height); | |
df8de03f KL |
495 | } |
496 | ||
497 | /** | |
498 | * Change the height. Everything on-screen will be destroyed and must be | |
499 | * redrawn. | |
500 | * | |
501 | * @param height new screen height | |
502 | */ | |
7b5261bc KL |
503 | public void setHeight(final int height) { |
504 | reallocate(this.width, height); | |
df8de03f KL |
505 | } |
506 | ||
507 | /** | |
508 | * Change the width and height. Everything on-screen will be destroyed | |
509 | * and must be redrawn. | |
510 | * | |
511 | * @param width new screen width | |
512 | * @param height new screen height | |
513 | */ | |
7b5261bc KL |
514 | public void setDimensions(final int width, final int height) { |
515 | reallocate(width, height); | |
df8de03f KL |
516 | } |
517 | ||
518 | /** | |
519 | * Get the height. | |
520 | * | |
521 | * @return current screen height | |
522 | */ | |
523 | public int getHeight() { | |
7b5261bc | 524 | return this.height; |
df8de03f KL |
525 | } |
526 | ||
527 | /** | |
528 | * Get the width. | |
529 | * | |
530 | * @return current screen width | |
531 | */ | |
532 | public int getWidth() { | |
7b5261bc | 533 | return this.width; |
df8de03f KL |
534 | } |
535 | ||
536 | /** | |
537 | * Public constructor. Sets everything to not-bold, white-on-black. | |
538 | */ | |
539 | public Screen() { | |
7b5261bc KL |
540 | offsetX = 0; |
541 | offsetY = 0; | |
542 | width = 80; | |
543 | height = 24; | |
544 | logical = null; | |
545 | physical = null; | |
546 | reallocate(width, height); | |
df8de03f KL |
547 | } |
548 | ||
549 | /** | |
550 | * Reset screen to not-bold, white-on-black. Also flushes the offset and | |
551 | * clip variables. | |
552 | */ | |
553 | public void reset() { | |
7b5261bc KL |
554 | dirty = true; |
555 | for (int row = 0; row < height; row++) { | |
556 | for (int col = 0; col < width; col++) { | |
557 | logical[col][row].reset(); | |
558 | } | |
559 | } | |
560 | resetClipping(); | |
df8de03f KL |
561 | } |
562 | ||
563 | /** | |
564 | * Flush the offset and clip variables. | |
565 | */ | |
566 | public void resetClipping() { | |
7b5261bc KL |
567 | offsetX = 0; |
568 | offsetY = 0; | |
569 | clipLeft = 0; | |
570 | clipTop = 0; | |
571 | clipRight = width; | |
572 | clipBottom = height; | |
df8de03f KL |
573 | } |
574 | ||
575 | /** | |
576 | * Force the screen to be fully cleared and redrawn on the next flush(). | |
577 | */ | |
578 | public void clear() { | |
7b5261bc | 579 | reset(); |
df8de03f KL |
580 | } |
581 | ||
582 | /** | |
583 | * Draw a box with a border and empty background. | |
584 | * | |
585 | * @param left left column of box. 0 is the left-most row. | |
586 | * @param top top row of the box. 0 is the top-most row. | |
587 | * @param right right column of box | |
588 | * @param bottom bottom row of the box | |
7b5261bc | 589 | * @param border attributes to use for the border |
df8de03f KL |
590 | * @param background attributes to use for the background |
591 | */ | |
7b5261bc KL |
592 | public void drawBox(final int left, final int top, |
593 | final int right, final int bottom, | |
594 | final CellAttributes border, final CellAttributes background) { | |
595 | ||
596 | drawBox(left, top, right, bottom, border, background, 1, false); | |
df8de03f KL |
597 | } |
598 | ||
599 | /** | |
600 | * Draw a box with a border and empty background. | |
601 | * | |
602 | * @param left left column of box. 0 is the left-most row. | |
603 | * @param top top row of the box. 0 is the top-most row. | |
604 | * @param right right column of box | |
605 | * @param bottom bottom row of the box | |
7b5261bc | 606 | * @param border attributes to use for the border |
df8de03f | 607 | * @param background attributes to use for the background |
7b5261bc KL |
608 | * @param borderType if 1, draw a single-line border; if 2, draw a |
609 | * double-line border; if 3, draw double-line top/bottom edges and | |
610 | * single-line left/right edges (like Qmodem) | |
df8de03f KL |
611 | * @param shadow if true, draw a "shadow" on the box |
612 | */ | |
7b5261bc KL |
613 | public void drawBox(final int left, final int top, |
614 | final int right, final int bottom, | |
615 | final CellAttributes border, final CellAttributes background, | |
616 | final int borderType, final boolean shadow) { | |
617 | ||
618 | int boxTop = top; | |
619 | int boxLeft = left; | |
620 | int boxWidth = right - left; | |
621 | int boxHeight = bottom - top; | |
622 | ||
623 | char cTopLeft; | |
624 | char cTopRight; | |
625 | char cBottomLeft; | |
626 | char cBottomRight; | |
627 | char cHSide; | |
628 | char cVSide; | |
629 | ||
630 | switch (borderType) { | |
631 | case 1: | |
632 | cTopLeft = GraphicsChars.ULCORNER; | |
633 | cTopRight = GraphicsChars.URCORNER; | |
634 | cBottomLeft = GraphicsChars.LLCORNER; | |
635 | cBottomRight = GraphicsChars.LRCORNER; | |
636 | cHSide = GraphicsChars.SINGLE_BAR; | |
637 | cVSide = GraphicsChars.WINDOW_SIDE; | |
638 | break; | |
639 | ||
640 | case 2: | |
641 | cTopLeft = GraphicsChars.WINDOW_LEFT_TOP_DOUBLE; | |
642 | cTopRight = GraphicsChars.WINDOW_RIGHT_TOP_DOUBLE; | |
643 | cBottomLeft = GraphicsChars.WINDOW_LEFT_BOTTOM_DOUBLE; | |
644 | cBottomRight = GraphicsChars.WINDOW_RIGHT_BOTTOM_DOUBLE; | |
645 | cHSide = GraphicsChars.DOUBLE_BAR; | |
646 | cVSide = GraphicsChars.WINDOW_SIDE_DOUBLE; | |
647 | break; | |
648 | ||
649 | case 3: | |
650 | cTopLeft = GraphicsChars.WINDOW_LEFT_TOP; | |
651 | cTopRight = GraphicsChars.WINDOW_RIGHT_TOP; | |
652 | cBottomLeft = GraphicsChars.WINDOW_LEFT_BOTTOM; | |
653 | cBottomRight = GraphicsChars.WINDOW_RIGHT_BOTTOM; | |
654 | cHSide = GraphicsChars.WINDOW_TOP; | |
655 | cVSide = GraphicsChars.WINDOW_SIDE; | |
656 | break; | |
657 | default: | |
658 | throw new IllegalArgumentException("Invalid border type: " | |
659 | + borderType); | |
660 | } | |
661 | ||
662 | // Place the corner characters | |
663 | putCharXY(left, top, cTopLeft, border); | |
664 | putCharXY(left + boxWidth - 1, top, cTopRight, border); | |
665 | putCharXY(left, top + boxHeight - 1, cBottomLeft, border); | |
666 | putCharXY(left + boxWidth - 1, top + boxHeight - 1, cBottomRight, | |
667 | border); | |
668 | ||
669 | // Draw the box lines | |
670 | hLineXY(left + 1, top, boxWidth - 2, cHSide, border); | |
671 | vLineXY(left, top + 1, boxHeight - 2, cVSide, border); | |
672 | hLineXY(left + 1, top + boxHeight - 1, boxWidth - 2, cHSide, border); | |
673 | vLineXY(left + boxWidth - 1, top + 1, boxHeight - 2, cVSide, border); | |
674 | ||
675 | // Fill in the interior background | |
676 | for (int i = 1; i < boxHeight - 1; i++) { | |
677 | hLineXY(1 + left, i + top, boxWidth - 2, ' ', background); | |
678 | } | |
679 | ||
680 | if (shadow) { | |
681 | // Draw a shadow | |
682 | drawBoxShadow(left, top, right, bottom); | |
683 | } | |
df8de03f KL |
684 | } |
685 | ||
686 | /** | |
687 | * Draw a box shadow | |
688 | * | |
689 | * @param left left column of box. 0 is the left-most row. | |
690 | * @param top top row of the box. 0 is the top-most row. | |
691 | * @param right right column of box | |
692 | * @param bottom bottom row of the box | |
693 | */ | |
7b5261bc KL |
694 | public void drawBoxShadow(final int left, final int top, |
695 | final int right, final int bottom) { | |
696 | ||
697 | int boxTop = top; | |
698 | int boxLeft = left; | |
699 | int boxWidth = right - left; | |
700 | int boxHeight = bottom - top; | |
701 | CellAttributes shadowAttr = new CellAttributes(); | |
702 | ||
703 | // Shadows do not honor clipping but they DO honor offset. | |
704 | int oldClipRight = clipRight; | |
705 | int oldClipBottom = clipBottom; | |
706 | /* | |
707 | clipRight = boxWidth + 2; | |
708 | clipBottom = boxHeight + 1; | |
709 | */ | |
710 | clipRight = width; | |
711 | clipBottom = height; | |
712 | ||
713 | for (int i = 0; i < boxHeight; i++) { | |
714 | putAttrXY(boxLeft + boxWidth, boxTop + 1 + i, shadowAttr); | |
715 | putAttrXY(boxLeft + boxWidth + 1, boxTop + 1 + i, shadowAttr); | |
716 | } | |
717 | for (int i = 0; i < boxWidth; i++) { | |
718 | putAttrXY(boxLeft + 2 + i, boxTop + boxHeight, shadowAttr); | |
719 | } | |
720 | clipRight = oldClipRight; | |
721 | clipBottom = oldClipBottom; | |
df8de03f KL |
722 | } |
723 | ||
724 | /** | |
725 | * Subclasses must provide an implementation to push the logical screen | |
726 | * to the physical device. | |
727 | */ | |
728 | abstract public void flushPhysical(); | |
729 | ||
730 | /** | |
731 | * Put the cursor at (x,y). | |
732 | * | |
733 | * @param visible if true, the cursor should be visible | |
734 | * @param x column coordinate to put the cursor on | |
735 | * @param y row coordinate to put the cursor on | |
736 | */ | |
7b5261bc KL |
737 | public void putCursor(final boolean visible, final int x, final int y) { |
738 | cursorVisible = visible; | |
739 | cursorX = x; | |
740 | cursorY = y; | |
df8de03f KL |
741 | } |
742 | ||
743 | /** | |
744 | * Hide the cursor | |
745 | */ | |
746 | public void hideCursor() { | |
7b5261bc | 747 | cursorVisible = false; |
df8de03f KL |
748 | } |
749 | } |