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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 KL |
55 | */ |
56 | public int offsetX; | |
57 | ||
58 | /** | |
7b5261bc | 59 | * Drawing offset for y. |
df8de03f KL |
60 | */ |
61 | public int offsetY; | |
62 | ||
63 | /** | |
7b5261bc | 64 | * Ignore anything drawn right of clipRight. |
df8de03f KL |
65 | */ |
66 | public int clipRight; | |
67 | ||
68 | /** | |
7b5261bc | 69 | * Ignore anything drawn below clipBottom. |
df8de03f KL |
70 | */ |
71 | public int clipBottom; | |
72 | ||
73 | /** | |
7b5261bc | 74 | * Ignore anything drawn left of clipLeft. |
df8de03f KL |
75 | */ |
76 | public int clipLeft; | |
77 | ||
78 | /** | |
7b5261bc | 79 | * Ignore anything drawn above clipTop. |
df8de03f KL |
80 | */ |
81 | public int clipTop; | |
82 | ||
83 | /** | |
7b5261bc | 84 | * The physical screen last sent out on flush(). |
df8de03f KL |
85 | */ |
86 | protected Cell [][] physical; | |
87 | ||
88 | /** | |
7b5261bc | 89 | * The logical screen being rendered to. |
df8de03f KL |
90 | */ |
91 | protected Cell [][] logical; | |
92 | ||
93 | /** | |
7b5261bc | 94 | * When true, logical != physical. |
df8de03f KL |
95 | */ |
96 | public boolean dirty; | |
97 | ||
98 | /** | |
99 | * Set if the user explicitly wants to redraw everything starting with a | |
7b5261bc | 100 | * ECMATerminal.clearAll(). |
df8de03f KL |
101 | */ |
102 | protected boolean reallyCleared; | |
103 | ||
104 | /** | |
105 | * If true, the cursor is visible and should be placed onscreen at | |
7b5261bc | 106 | * (cursorX, cursorY) during a call to flushPhysical(). |
df8de03f KL |
107 | */ |
108 | protected boolean cursorVisible; | |
109 | ||
110 | /** | |
7b5261bc | 111 | * Cursor X position if visible. |
df8de03f KL |
112 | */ |
113 | protected int cursorX; | |
114 | ||
115 | /** | |
7b5261bc | 116 | * Cursor Y position if visible. |
df8de03f KL |
117 | */ |
118 | protected int cursorY; | |
119 | ||
120 | /** | |
121 | * Get the attributes at one location. | |
122 | * | |
123 | * @param x column coordinate. 0 is the left-most column. | |
124 | * @param y row coordinate. 0 is the top-most row. | |
125 | * @return attributes at (x, y) | |
126 | */ | |
7b5261bc KL |
127 | public CellAttributes getAttrXY(final int x, final int y) { |
128 | CellAttributes attr = new CellAttributes(); | |
129 | attr.setTo(logical[x][y]); | |
130 | return attr; | |
df8de03f KL |
131 | } |
132 | ||
133 | /** | |
134 | * Set the attributes at one location. | |
135 | * | |
136 | * @param x column coordinate. 0 is the left-most column. | |
137 | * @param y row coordinate. 0 is the top-most row. | |
138 | * @param attr attributes to use (bold, foreColor, backColor) | |
df8de03f | 139 | */ |
7b5261bc KL |
140 | public void putAttrXY(final int x, final int y, final CellAttributes attr) { |
141 | putAttrXY(x, y, attr, true); | |
df8de03f | 142 | } |
7b5261bc | 143 | |
df8de03f KL |
144 | /** |
145 | * Set the attributes at one location. | |
146 | * | |
147 | * @param x column coordinate. 0 is the left-most column. | |
148 | * @param y row coordinate. 0 is the top-most row. | |
149 | * @param attr attributes to use (bold, foreColor, backColor) | |
150 | * @param clip if true, honor clipping/offset | |
151 | */ | |
7b5261bc KL |
152 | public void putAttrXY(final int x, final int y, final CellAttributes attr, |
153 | final boolean clip) { | |
154 | ||
155 | int X = x; | |
156 | int Y = y; | |
157 | ||
158 | if (clip) { | |
159 | if ((x < clipLeft) | |
160 | || (x >= clipRight) | |
161 | || (y < clipTop) | |
162 | || (y >= clipBottom) | |
163 | ) { | |
164 | return; | |
165 | } | |
166 | X += offsetX; | |
167 | Y += offsetY; | |
168 | } | |
169 | ||
170 | if ((X >= 0) && (X < width) && (Y >= 0) && (Y < height)) { | |
171 | dirty = true; | |
172 | logical[X][Y].setForeColor(attr.getForeColor()); | |
173 | logical[X][Y].setBackColor(attr.getBackColor()); | |
174 | logical[X][Y].setBold(attr.getBold()); | |
175 | logical[X][Y].setBlink(attr.getBlink()); | |
176 | logical[X][Y].setReverse(attr.getReverse()); | |
177 | logical[X][Y].setUnderline(attr.getUnderline()); | |
178 | logical[X][Y].setProtect(attr.getProtect()); | |
179 | } | |
df8de03f KL |
180 | } |
181 | ||
182 | /** | |
183 | * Fill the entire screen with one character with attributes. | |
184 | * | |
185 | * @param ch character to draw | |
186 | * @param attr attributes to use (bold, foreColor, backColor) | |
187 | */ | |
7b5261bc KL |
188 | public void putAll(final char ch, final CellAttributes attr) { |
189 | for (int x = 0; x < width; x++) { | |
190 | for (int y = 0; y < height; y++) { | |
191 | putCharXY(x, y, ch, attr); | |
192 | } | |
193 | } | |
df8de03f KL |
194 | } |
195 | ||
196 | /** | |
197 | * Render one character with attributes. | |
198 | * | |
199 | * @param x column coordinate. 0 is the left-most column. | |
200 | * @param y row coordinate. 0 is the top-most row. | |
201 | * @param ch character + attributes to draw | |
202 | */ | |
7b5261bc KL |
203 | public void putCharXY(final int x, final int y, final Cell ch) { |
204 | putCharXY(x, y, ch.getChar(), ch); | |
df8de03f KL |
205 | } |
206 | ||
207 | /** | |
208 | * Render one character with attributes. | |
209 | * | |
210 | * @param x column coordinate. 0 is the left-most column. | |
211 | * @param y row coordinate. 0 is the top-most row. | |
212 | * @param ch character to draw | |
213 | * @param attr attributes to use (bold, foreColor, backColor) | |
214 | */ | |
7b5261bc KL |
215 | public void putCharXY(final int x, final int y, final char ch, |
216 | final CellAttributes attr) { | |
217 | ||
218 | if ((x < clipLeft) | |
219 | || (x >= clipRight) | |
220 | || (y < clipTop) | |
221 | || (y >= clipBottom) | |
222 | ) { | |
223 | return; | |
224 | } | |
225 | ||
226 | int X = x + offsetX; | |
227 | int Y = y + offsetY; | |
228 | ||
229 | // System.err.printf("putCharXY: %d, %d, %c\n", X, Y, ch); | |
230 | ||
231 | if ((X >= 0) && (X < width) && (Y >= 0) && (Y < height)) { | |
232 | dirty = true; | |
233 | ||
234 | // Do not put control characters on the display | |
235 | assert (ch >= 0x20); | |
236 | assert (ch != 0x7F); | |
237 | ||
238 | logical[X][Y].setChar(ch); | |
239 | logical[X][Y].setForeColor(attr.getForeColor()); | |
240 | logical[X][Y].setBackColor(attr.getBackColor()); | |
241 | logical[X][Y].setBold(attr.getBold()); | |
242 | logical[X][Y].setBlink(attr.getBlink()); | |
243 | logical[X][Y].setReverse(attr.getReverse()); | |
244 | logical[X][Y].setUnderline(attr.getUnderline()); | |
245 | logical[X][Y].setProtect(attr.getProtect()); | |
246 | } | |
df8de03f KL |
247 | } |
248 | ||
249 | /** | |
250 | * Render one character without changing the underlying attributes. | |
251 | * | |
252 | * @param x column coordinate. 0 is the left-most column. | |
253 | * @param y row coordinate. 0 is the top-most row. | |
254 | * @param ch character to draw | |
255 | */ | |
7b5261bc KL |
256 | public void putCharXY(final int x, final int y, final char ch) { |
257 | if ((x < clipLeft) | |
258 | || (x >= clipRight) | |
259 | || (y < clipTop) | |
260 | || (y >= clipBottom) | |
261 | ) { | |
262 | return; | |
263 | } | |
df8de03f | 264 | |
7b5261bc KL |
265 | int X = x + offsetX; |
266 | int Y = y + offsetY; | |
df8de03f | 267 | |
7b5261bc | 268 | // System.err.printf("putCharXY: %d, %d, %c\n", X, Y, ch); |
df8de03f | 269 | |
7b5261bc KL |
270 | if ((X >= 0) && (X < width) && (Y >= 0) && (Y < height)) { |
271 | dirty = true; | |
272 | logical[X][Y].setChar(ch); | |
273 | } | |
df8de03f KL |
274 | } |
275 | ||
276 | /** | |
277 | * Render a string. Does not wrap if the string exceeds the line. | |
278 | * | |
279 | * @param x column coordinate. 0 is the left-most column. | |
280 | * @param y row coordinate. 0 is the top-most row. | |
281 | * @param str string to draw | |
282 | * @param attr attributes to use (bold, foreColor, backColor) | |
283 | */ | |
7b5261bc KL |
284 | public void putStrXY(final int x, final int y, final String str, |
285 | final CellAttributes attr) { | |
286 | ||
287 | int i = x; | |
288 | for (int j = 0; j < str.length(); j++) { | |
289 | char ch = str.charAt(j); | |
290 | putCharXY(i, y, ch, attr); | |
291 | i++; | |
292 | if (i == width) { | |
293 | break; | |
294 | } | |
295 | } | |
df8de03f KL |
296 | } |
297 | ||
298 | /** | |
299 | * Render a string without changing the underlying attribute. Does not | |
300 | * wrap if the string exceeds the line. | |
301 | * | |
302 | * @param x column coordinate. 0 is the left-most column. | |
303 | * @param y row coordinate. 0 is the top-most row. | |
304 | * @param str string to draw | |
305 | */ | |
7b5261bc KL |
306 | public void putStrXY(final int x, final int y, final String str) { |
307 | int i = x; | |
308 | for (int j = 0; j < str.length(); j++) { | |
309 | char ch = str.charAt(j); | |
310 | putCharXY(i, y, ch); | |
311 | i++; | |
312 | if (i == width) { | |
313 | break; | |
314 | } | |
315 | } | |
df8de03f KL |
316 | } |
317 | ||
318 | /** | |
7b5261bc | 319 | * Draw a vertical line from (x, y) to (x, y + n). |
df8de03f KL |
320 | * |
321 | * @param x column coordinate. 0 is the left-most column. | |
322 | * @param y row coordinate. 0 is the top-most row. | |
323 | * @param n number of characters to draw | |
324 | * @param ch character to draw | |
325 | * @param attr attributes to use (bold, foreColor, backColor) | |
326 | */ | |
7b5261bc KL |
327 | public void vLineXY(final int x, final int y, final int n, final char ch, |
328 | final CellAttributes attr) { | |
329 | ||
330 | for (int i = y; i < y + n; i++) { | |
331 | putCharXY(x, i, ch, attr); | |
332 | } | |
df8de03f KL |
333 | } |
334 | ||
335 | /** | |
7b5261bc | 336 | * Draw a horizontal line from (x, y) to (x + n, y). |
df8de03f KL |
337 | * |
338 | * @param x column coordinate. 0 is the left-most column. | |
339 | * @param y row coordinate. 0 is the top-most row. | |
340 | * @param n number of characters to draw | |
341 | * @param ch character to draw | |
342 | * @param attr attributes to use (bold, foreColor, backColor) | |
343 | */ | |
7b5261bc KL |
344 | public void hLineXY(final int x, final int y, final int n, final char ch, |
345 | final CellAttributes attr) { | |
346 | ||
347 | for (int i = x; i < x + n; i++) { | |
348 | putCharXY(i, y, ch, attr); | |
349 | } | |
df8de03f KL |
350 | } |
351 | ||
352 | /** | |
353 | * Reallocate screen buffers. | |
354 | * | |
355 | * @param width new width | |
356 | * @param height new height | |
357 | */ | |
7b5261bc KL |
358 | private void reallocate(final int width, final int height) { |
359 | if (logical != null) { | |
360 | for (int row = 0; row < this.height; row++) { | |
361 | for (int col = 0; col < this.width; col++) { | |
362 | logical[col][row] = null; | |
363 | } | |
364 | } | |
365 | logical = null; | |
366 | } | |
367 | logical = new Cell[width][height]; | |
368 | if (physical != null) { | |
369 | for (int row = 0; row < this.height; row++) { | |
370 | for (int col = 0; col < this.width; col++) { | |
371 | physical[col][row] = null; | |
372 | } | |
373 | } | |
374 | physical = null; | |
375 | } | |
376 | physical = new Cell[width][height]; | |
377 | ||
378 | for (int row = 0; row < height; row++) { | |
379 | for (int col = 0; col < width; col++) { | |
380 | physical[col][row] = new Cell(); | |
381 | logical[col][row] = new Cell(); | |
382 | } | |
383 | } | |
384 | ||
385 | this.width = width; | |
386 | this.height = height; | |
387 | ||
388 | clipLeft = 0; | |
389 | clipTop = 0; | |
390 | clipRight = width; | |
391 | clipBottom = height; | |
392 | ||
393 | reallyCleared = true; | |
394 | dirty = true; | |
df8de03f KL |
395 | } |
396 | ||
397 | /** | |
398 | * Change the width. Everything on-screen will be destroyed and must be | |
399 | * redrawn. | |
7b5261bc | 400 | * |
df8de03f KL |
401 | * @param width new screen width |
402 | */ | |
7b5261bc KL |
403 | public void setWidth(final int width) { |
404 | reallocate(width, this.height); | |
df8de03f KL |
405 | } |
406 | ||
407 | /** | |
408 | * Change the height. Everything on-screen will be destroyed and must be | |
409 | * redrawn. | |
410 | * | |
411 | * @param height new screen height | |
412 | */ | |
7b5261bc KL |
413 | public void setHeight(final int height) { |
414 | reallocate(this.width, height); | |
df8de03f KL |
415 | } |
416 | ||
417 | /** | |
418 | * Change the width and height. Everything on-screen will be destroyed | |
419 | * and must be redrawn. | |
420 | * | |
421 | * @param width new screen width | |
422 | * @param height new screen height | |
423 | */ | |
7b5261bc KL |
424 | public void setDimensions(final int width, final int height) { |
425 | reallocate(width, height); | |
df8de03f KL |
426 | } |
427 | ||
428 | /** | |
429 | * Get the height. | |
430 | * | |
431 | * @return current screen height | |
432 | */ | |
433 | public int getHeight() { | |
7b5261bc | 434 | return this.height; |
df8de03f KL |
435 | } |
436 | ||
437 | /** | |
438 | * Get the width. | |
439 | * | |
440 | * @return current screen width | |
441 | */ | |
442 | public int getWidth() { | |
7b5261bc | 443 | return this.width; |
df8de03f KL |
444 | } |
445 | ||
446 | /** | |
447 | * Public constructor. Sets everything to not-bold, white-on-black. | |
448 | */ | |
449 | public Screen() { | |
7b5261bc KL |
450 | offsetX = 0; |
451 | offsetY = 0; | |
452 | width = 80; | |
453 | height = 24; | |
454 | logical = null; | |
455 | physical = null; | |
456 | reallocate(width, height); | |
df8de03f KL |
457 | } |
458 | ||
459 | /** | |
460 | * Reset screen to not-bold, white-on-black. Also flushes the offset and | |
461 | * clip variables. | |
462 | */ | |
463 | public void reset() { | |
7b5261bc KL |
464 | dirty = true; |
465 | for (int row = 0; row < height; row++) { | |
466 | for (int col = 0; col < width; col++) { | |
467 | logical[col][row].reset(); | |
468 | } | |
469 | } | |
470 | resetClipping(); | |
df8de03f KL |
471 | } |
472 | ||
473 | /** | |
474 | * Flush the offset and clip variables. | |
475 | */ | |
476 | public void resetClipping() { | |
7b5261bc KL |
477 | offsetX = 0; |
478 | offsetY = 0; | |
479 | clipLeft = 0; | |
480 | clipTop = 0; | |
481 | clipRight = width; | |
482 | clipBottom = height; | |
df8de03f KL |
483 | } |
484 | ||
485 | /** | |
486 | * Force the screen to be fully cleared and redrawn on the next flush(). | |
487 | */ | |
488 | public void clear() { | |
7b5261bc | 489 | reset(); |
df8de03f KL |
490 | } |
491 | ||
492 | /** | |
493 | * Draw a box with a border and empty background. | |
494 | * | |
495 | * @param left left column of box. 0 is the left-most row. | |
496 | * @param top top row of the box. 0 is the top-most row. | |
497 | * @param right right column of box | |
498 | * @param bottom bottom row of the box | |
7b5261bc | 499 | * @param border attributes to use for the border |
df8de03f KL |
500 | * @param background attributes to use for the background |
501 | */ | |
7b5261bc KL |
502 | public void drawBox(final int left, final int top, |
503 | final int right, final int bottom, | |
504 | final CellAttributes border, final CellAttributes background) { | |
505 | ||
506 | drawBox(left, top, right, bottom, border, background, 1, false); | |
df8de03f KL |
507 | } |
508 | ||
509 | /** | |
510 | * Draw a box with a border and empty background. | |
511 | * | |
512 | * @param left left column of box. 0 is the left-most row. | |
513 | * @param top top row of the box. 0 is the top-most row. | |
514 | * @param right right column of box | |
515 | * @param bottom bottom row of the box | |
7b5261bc | 516 | * @param border attributes to use for the border |
df8de03f | 517 | * @param background attributes to use for the background |
7b5261bc KL |
518 | * @param borderType if 1, draw a single-line border; if 2, draw a |
519 | * double-line border; if 3, draw double-line top/bottom edges and | |
520 | * single-line left/right edges (like Qmodem) | |
df8de03f KL |
521 | * @param shadow if true, draw a "shadow" on the box |
522 | */ | |
7b5261bc KL |
523 | public void drawBox(final int left, final int top, |
524 | final int right, final int bottom, | |
525 | final CellAttributes border, final CellAttributes background, | |
526 | final int borderType, final boolean shadow) { | |
527 | ||
528 | int boxTop = top; | |
529 | int boxLeft = left; | |
530 | int boxWidth = right - left; | |
531 | int boxHeight = bottom - top; | |
532 | ||
533 | char cTopLeft; | |
534 | char cTopRight; | |
535 | char cBottomLeft; | |
536 | char cBottomRight; | |
537 | char cHSide; | |
538 | char cVSide; | |
539 | ||
540 | switch (borderType) { | |
541 | case 1: | |
542 | cTopLeft = GraphicsChars.ULCORNER; | |
543 | cTopRight = GraphicsChars.URCORNER; | |
544 | cBottomLeft = GraphicsChars.LLCORNER; | |
545 | cBottomRight = GraphicsChars.LRCORNER; | |
546 | cHSide = GraphicsChars.SINGLE_BAR; | |
547 | cVSide = GraphicsChars.WINDOW_SIDE; | |
548 | break; | |
549 | ||
550 | case 2: | |
551 | cTopLeft = GraphicsChars.WINDOW_LEFT_TOP_DOUBLE; | |
552 | cTopRight = GraphicsChars.WINDOW_RIGHT_TOP_DOUBLE; | |
553 | cBottomLeft = GraphicsChars.WINDOW_LEFT_BOTTOM_DOUBLE; | |
554 | cBottomRight = GraphicsChars.WINDOW_RIGHT_BOTTOM_DOUBLE; | |
555 | cHSide = GraphicsChars.DOUBLE_BAR; | |
556 | cVSide = GraphicsChars.WINDOW_SIDE_DOUBLE; | |
557 | break; | |
558 | ||
559 | case 3: | |
560 | cTopLeft = GraphicsChars.WINDOW_LEFT_TOP; | |
561 | cTopRight = GraphicsChars.WINDOW_RIGHT_TOP; | |
562 | cBottomLeft = GraphicsChars.WINDOW_LEFT_BOTTOM; | |
563 | cBottomRight = GraphicsChars.WINDOW_RIGHT_BOTTOM; | |
564 | cHSide = GraphicsChars.WINDOW_TOP; | |
565 | cVSide = GraphicsChars.WINDOW_SIDE; | |
566 | break; | |
567 | default: | |
568 | throw new IllegalArgumentException("Invalid border type: " | |
569 | + borderType); | |
570 | } | |
571 | ||
572 | // Place the corner characters | |
573 | putCharXY(left, top, cTopLeft, border); | |
574 | putCharXY(left + boxWidth - 1, top, cTopRight, border); | |
575 | putCharXY(left, top + boxHeight - 1, cBottomLeft, border); | |
576 | putCharXY(left + boxWidth - 1, top + boxHeight - 1, cBottomRight, | |
577 | border); | |
578 | ||
579 | // Draw the box lines | |
580 | hLineXY(left + 1, top, boxWidth - 2, cHSide, border); | |
581 | vLineXY(left, top + 1, boxHeight - 2, cVSide, border); | |
582 | hLineXY(left + 1, top + boxHeight - 1, boxWidth - 2, cHSide, border); | |
583 | vLineXY(left + boxWidth - 1, top + 1, boxHeight - 2, cVSide, border); | |
584 | ||
585 | // Fill in the interior background | |
586 | for (int i = 1; i < boxHeight - 1; i++) { | |
587 | hLineXY(1 + left, i + top, boxWidth - 2, ' ', background); | |
588 | } | |
589 | ||
590 | if (shadow) { | |
591 | // Draw a shadow | |
592 | drawBoxShadow(left, top, right, bottom); | |
593 | } | |
df8de03f KL |
594 | } |
595 | ||
596 | /** | |
597 | * Draw a box shadow | |
598 | * | |
599 | * @param left left column of box. 0 is the left-most row. | |
600 | * @param top top row of the box. 0 is the top-most row. | |
601 | * @param right right column of box | |
602 | * @param bottom bottom row of the box | |
603 | */ | |
7b5261bc KL |
604 | public void drawBoxShadow(final int left, final int top, |
605 | final int right, final int bottom) { | |
606 | ||
607 | int boxTop = top; | |
608 | int boxLeft = left; | |
609 | int boxWidth = right - left; | |
610 | int boxHeight = bottom - top; | |
611 | CellAttributes shadowAttr = new CellAttributes(); | |
612 | ||
613 | // Shadows do not honor clipping but they DO honor offset. | |
614 | int oldClipRight = clipRight; | |
615 | int oldClipBottom = clipBottom; | |
616 | /* | |
617 | clipRight = boxWidth + 2; | |
618 | clipBottom = boxHeight + 1; | |
619 | */ | |
620 | clipRight = width; | |
621 | clipBottom = height; | |
622 | ||
623 | for (int i = 0; i < boxHeight; i++) { | |
624 | putAttrXY(boxLeft + boxWidth, boxTop + 1 + i, shadowAttr); | |
625 | putAttrXY(boxLeft + boxWidth + 1, boxTop + 1 + i, shadowAttr); | |
626 | } | |
627 | for (int i = 0; i < boxWidth; i++) { | |
628 | putAttrXY(boxLeft + 2 + i, boxTop + boxHeight, shadowAttr); | |
629 | } | |
630 | clipRight = oldClipRight; | |
631 | clipBottom = oldClipBottom; | |
df8de03f KL |
632 | } |
633 | ||
634 | /** | |
635 | * Subclasses must provide an implementation to push the logical screen | |
636 | * to the physical device. | |
637 | */ | |
638 | abstract public void flushPhysical(); | |
639 | ||
640 | /** | |
641 | * Put the cursor at (x,y). | |
642 | * | |
643 | * @param visible if true, the cursor should be visible | |
644 | * @param x column coordinate to put the cursor on | |
645 | * @param y row coordinate to put the cursor on | |
646 | */ | |
7b5261bc KL |
647 | public void putCursor(final boolean visible, final int x, final int y) { |
648 | cursorVisible = visible; | |
649 | cursorX = x; | |
650 | cursorY = y; | |
df8de03f KL |
651 | } |
652 | ||
653 | /** | |
654 | * Hide the cursor | |
655 | */ | |
656 | public void hideCursor() { | |
7b5261bc | 657 | cursorVisible = false; |
df8de03f KL |
658 | } |
659 | } |