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a69ed767 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.image.BufferedImage; | |
32 | ||
33 | import jexer.backend.ECMA48Terminal; | |
34 | import jexer.backend.MultiScreen; | |
35 | import jexer.backend.SwingTerminal; | |
36 | import jexer.bits.Cell; | |
f8b30e4b | 37 | import jexer.event.TCommandEvent; |
a69ed767 KL |
38 | import jexer.event.TKeypressEvent; |
39 | import jexer.event.TMouseEvent; | |
b2441422 | 40 | import jexer.event.TResizeEvent; |
f8b30e4b | 41 | import static jexer.TCommand.*; |
a69ed767 KL |
42 | import static jexer.TKeypress.*; |
43 | ||
44 | /** | |
45 | * TImage renders a piece of a bitmap image on screen. | |
46 | */ | |
f8b30e4b | 47 | public class TImage extends TWidget implements EditMenuUser { |
a69ed767 | 48 | |
b2441422 KL |
49 | // ------------------------------------------------------------------------ |
50 | // Constants -------------------------------------------------------------- | |
51 | // ------------------------------------------------------------------------ | |
52 | ||
53 | /** | |
54 | * Selections for fitting the image to the text cells. | |
55 | */ | |
56 | public enum Scale { | |
57 | /** | |
58 | * No scaling. | |
59 | */ | |
60 | NONE, | |
61 | ||
62 | /** | |
63 | * Stretch/shrink the image in both directions to fully fill the text | |
64 | * area width/height. | |
65 | */ | |
66 | STRETCH, | |
67 | ||
68 | /** | |
69 | * Scale the image, preserving aspect ratio, to fill the text area | |
70 | * width/height (like letterbox). The background color for the | |
71 | * letterboxed area is specified in scaleBackColor. | |
72 | */ | |
73 | SCALE, | |
74 | } | |
75 | ||
a69ed767 KL |
76 | // ------------------------------------------------------------------------ |
77 | // Variables -------------------------------------------------------------- | |
78 | // ------------------------------------------------------------------------ | |
79 | ||
b2441422 KL |
80 | /** |
81 | * Scaling strategy to use. | |
82 | */ | |
83 | private Scale scale = Scale.NONE; | |
84 | ||
85 | /** | |
86 | * Scaling strategy to use. | |
87 | */ | |
88 | private java.awt.Color scaleBackColor = java.awt.Color.BLACK; | |
89 | ||
a69ed767 KL |
90 | /** |
91 | * The action to perform when the user clicks on the image. | |
92 | */ | |
93 | private TAction clickAction; | |
94 | ||
95 | /** | |
96 | * The image to display. | |
97 | */ | |
98 | private BufferedImage image; | |
99 | ||
100 | /** | |
101 | * The original image from construction time. | |
102 | */ | |
103 | private BufferedImage originalImage; | |
104 | ||
105 | /** | |
106 | * The current scaling factor for the image. | |
107 | */ | |
108 | private double scaleFactor = 1.0; | |
109 | ||
110 | /** | |
111 | * The current clockwise rotation for the image. | |
112 | */ | |
113 | private int clockwise = 0; | |
114 | ||
b2441422 KL |
115 | /** |
116 | * If true, this widget was resized and a new scaled image must be | |
117 | * produced. | |
118 | */ | |
119 | private boolean resized = false; | |
120 | ||
a69ed767 KL |
121 | /** |
122 | * Left column of the image. 0 is the left-most column. | |
123 | */ | |
124 | private int left; | |
125 | ||
126 | /** | |
127 | * Top row of the image. 0 is the top-most row. | |
128 | */ | |
129 | private int top; | |
130 | ||
131 | /** | |
132 | * The cells containing the broken up image pieces. | |
133 | */ | |
134 | private Cell cells[][]; | |
135 | ||
136 | /** | |
137 | * The number of rows in cells[]. | |
138 | */ | |
139 | private int cellRows; | |
140 | ||
141 | /** | |
142 | * The number of columns in cells[]. | |
143 | */ | |
144 | private int cellColumns; | |
145 | ||
146 | /** | |
147 | * Last text width value. | |
148 | */ | |
149 | private int lastTextWidth = -1; | |
150 | ||
151 | /** | |
152 | * Last text height value. | |
153 | */ | |
154 | private int lastTextHeight = -1; | |
155 | ||
156 | // ------------------------------------------------------------------------ | |
157 | // Constructors ----------------------------------------------------------- | |
158 | // ------------------------------------------------------------------------ | |
159 | ||
160 | /** | |
161 | * Public constructor. | |
162 | * | |
163 | * @param parent parent widget | |
164 | * @param x column relative to parent | |
165 | * @param y row relative to parent | |
166 | * @param width number of text cells for width of the image | |
167 | * @param height number of text cells for height of the image | |
168 | * @param image the image to display | |
169 | * @param left left column of the image. 0 is the left-most column. | |
382bc294 KL |
170 | * @param top top row of the image. 0 is the top-most row. |
171 | */ | |
172 | public TImage(final TWidget parent, final int x, final int y, | |
173 | final int width, final int height, | |
174 | final BufferedImage image, final int left, final int top) { | |
175 | ||
176 | this(parent, x, y, width, height, image, left, top, null); | |
177 | } | |
178 | ||
179 | /** | |
180 | * Public constructor. | |
181 | * | |
182 | * @param parent parent widget | |
183 | * @param x column relative to parent | |
184 | * @param y row relative to parent | |
185 | * @param width number of text cells for width of the image | |
186 | * @param height number of text cells for height of the image | |
187 | * @param image the image to display | |
188 | * @param left left column of the image. 0 is the left-most column. | |
a69ed767 KL |
189 | * @param top top row of the image. 0 is the top-most row. |
190 | * @param clickAction function to call when mouse is pressed | |
191 | */ | |
192 | public TImage(final TWidget parent, final int x, final int y, | |
193 | final int width, final int height, | |
194 | final BufferedImage image, final int left, final int top, | |
195 | final TAction clickAction) { | |
196 | ||
197 | // Set parent and window | |
198 | super(parent, x, y, width, height); | |
199 | ||
200 | setCursorVisible(false); | |
201 | this.originalImage = image; | |
202 | this.left = left; | |
203 | this.top = top; | |
204 | this.clickAction = clickAction; | |
205 | ||
206 | sizeToImage(true); | |
a69ed767 KL |
207 | } |
208 | ||
209 | // ------------------------------------------------------------------------ | |
210 | // Event handlers --------------------------------------------------------- | |
211 | // ------------------------------------------------------------------------ | |
212 | ||
a69ed767 KL |
213 | /** |
214 | * Handle mouse press events. | |
215 | * | |
216 | * @param mouse mouse button press event | |
217 | */ | |
218 | @Override | |
219 | public void onMouseDown(final TMouseEvent mouse) { | |
220 | if (clickAction != null) { | |
a524aa2e | 221 | clickAction.DO(this); |
a69ed767 KL |
222 | return; |
223 | } | |
224 | } | |
225 | ||
226 | /** | |
227 | * Handle keystrokes. | |
228 | * | |
229 | * @param keypress keystroke event | |
230 | */ | |
231 | @Override | |
232 | public void onKeypress(final TKeypressEvent keypress) { | |
233 | if (!keypress.getKey().isFnKey()) { | |
234 | if (keypress.getKey().getChar() == '+') { | |
235 | // Make the image bigger. | |
236 | scaleFactor *= 1.25; | |
237 | image = null; | |
238 | sizeToImage(true); | |
239 | return; | |
240 | } | |
241 | if (keypress.getKey().getChar() == '-') { | |
242 | // Make the image smaller. | |
243 | scaleFactor *= 0.80; | |
244 | image = null; | |
245 | sizeToImage(true); | |
246 | return; | |
247 | } | |
248 | } | |
249 | if (keypress.equals(kbAltUp)) { | |
250 | // Make the image bigger. | |
251 | scaleFactor *= 1.25; | |
252 | image = null; | |
253 | sizeToImage(true); | |
254 | return; | |
255 | } | |
256 | if (keypress.equals(kbAltDown)) { | |
257 | // Make the image smaller. | |
258 | scaleFactor *= 0.80; | |
259 | image = null; | |
260 | sizeToImage(true); | |
261 | return; | |
262 | } | |
263 | if (keypress.equals(kbAltRight)) { | |
264 | // Rotate clockwise. | |
265 | clockwise++; | |
266 | clockwise %= 4; | |
267 | image = null; | |
268 | sizeToImage(true); | |
269 | return; | |
270 | } | |
271 | if (keypress.equals(kbAltLeft)) { | |
272 | // Rotate counter-clockwise. | |
273 | clockwise--; | |
274 | if (clockwise < 0) { | |
275 | clockwise = 3; | |
276 | } | |
277 | image = null; | |
278 | sizeToImage(true); | |
279 | return; | |
280 | } | |
281 | ||
b2441422 KL |
282 | if (keypress.equals(kbShiftLeft)) { |
283 | switch (scale) { | |
284 | case NONE: | |
285 | setScaleType(Scale.SCALE); | |
286 | return; | |
287 | case STRETCH: | |
288 | setScaleType(Scale.NONE); | |
289 | return; | |
290 | case SCALE: | |
291 | setScaleType(Scale.STRETCH); | |
292 | return; | |
293 | } | |
294 | } | |
295 | if (keypress.equals(kbShiftRight)) { | |
296 | switch (scale) { | |
297 | case NONE: | |
298 | setScaleType(Scale.STRETCH); | |
299 | return; | |
300 | case STRETCH: | |
301 | setScaleType(Scale.SCALE); | |
302 | return; | |
303 | case SCALE: | |
304 | setScaleType(Scale.NONE); | |
305 | return; | |
306 | } | |
307 | } | |
308 | ||
a69ed767 KL |
309 | // Pass to parent for the things we don't care about. |
310 | super.onKeypress(keypress); | |
311 | } | |
312 | ||
b2441422 KL |
313 | /** |
314 | * Handle resize events. | |
315 | * | |
316 | * @param event resize event | |
317 | */ | |
318 | @Override | |
319 | public void onResize(final TResizeEvent event) { | |
320 | // Get my width/height set correctly. | |
321 | super.onResize(event); | |
322 | ||
323 | if (scale == Scale.NONE) { | |
324 | return; | |
325 | } | |
326 | image = null; | |
327 | resized = true; | |
328 | } | |
329 | ||
f8b30e4b KL |
330 | /** |
331 | * Handle posted command events. | |
332 | * | |
333 | * @param command command event | |
334 | */ | |
335 | @Override | |
336 | public void onCommand(final TCommandEvent command) { | |
337 | if (command.equals(cmCopy)) { | |
338 | // Copy image to clipboard. | |
339 | getClipboard().copyImage(image); | |
340 | return; | |
341 | } | |
342 | } | |
343 | ||
a69ed767 KL |
344 | // ------------------------------------------------------------------------ |
345 | // TWidget ---------------------------------------------------------------- | |
346 | // ------------------------------------------------------------------------ | |
347 | ||
348 | /** | |
349 | * Draw the image. | |
350 | */ | |
351 | @Override | |
352 | public void draw() { | |
353 | sizeToImage(false); | |
354 | ||
355 | // We have already broken the image up, just draw the last set of | |
356 | // cells. | |
357 | for (int x = 0; (x < getWidth()) && (x + left < cellColumns); x++) { | |
358 | if ((left + x) * lastTextWidth > image.getWidth()) { | |
359 | continue; | |
360 | } | |
361 | ||
362 | for (int y = 0; (y < getHeight()) && (y + top < cellRows); y++) { | |
363 | if ((top + y) * lastTextHeight > image.getHeight()) { | |
364 | continue; | |
365 | } | |
366 | assert (x + left < cellColumns); | |
367 | assert (y + top < cellRows); | |
368 | ||
369 | getWindow().putCharXY(x, y, cells[x + left][y + top]); | |
370 | } | |
371 | } | |
372 | ||
373 | } | |
374 | ||
375 | // ------------------------------------------------------------------------ | |
376 | // TImage ----------------------------------------------------------------- | |
377 | // ------------------------------------------------------------------------ | |
378 | ||
379 | /** | |
380 | * Size cells[][] according to the screen font size. | |
381 | * | |
382 | * @param always if true, always resize the cells | |
383 | */ | |
384 | private void sizeToImage(final boolean always) { | |
03ae544a KL |
385 | int textWidth = getScreen().getTextWidth(); |
386 | int textHeight = getScreen().getTextHeight(); | |
a69ed767 KL |
387 | |
388 | if (image == null) { | |
b2441422 KL |
389 | image = rotateImage(originalImage, clockwise); |
390 | image = scaleImage(image, scaleFactor, getWidth(), getHeight(), | |
391 | textWidth, textHeight); | |
a69ed767 KL |
392 | } |
393 | ||
394 | if ((always == true) || | |
b2441422 | 395 | (resized == true) || |
a69ed767 KL |
396 | ((textWidth > 0) |
397 | && (textWidth != lastTextWidth) | |
398 | && (textHeight > 0) | |
399 | && (textHeight != lastTextHeight)) | |
400 | ) { | |
b2441422 KL |
401 | resized = false; |
402 | ||
a69ed767 KL |
403 | cellColumns = image.getWidth() / textWidth; |
404 | if (cellColumns * textWidth < image.getWidth()) { | |
405 | cellColumns++; | |
406 | } | |
407 | cellRows = image.getHeight() / textHeight; | |
408 | if (cellRows * textHeight < image.getHeight()) { | |
409 | cellRows++; | |
410 | } | |
411 | ||
412 | // Break the image up into an array of cells. | |
413 | cells = new Cell[cellColumns][cellRows]; | |
414 | ||
415 | for (int x = 0; x < cellColumns; x++) { | |
416 | for (int y = 0; y < cellRows; y++) { | |
417 | ||
418 | int width = textWidth; | |
419 | if ((x + 1) * textWidth > image.getWidth()) { | |
420 | width = image.getWidth() - (x * textWidth); | |
421 | } | |
422 | int height = textHeight; | |
423 | if ((y + 1) * textHeight > image.getHeight()) { | |
424 | height = image.getHeight() - (y * textHeight); | |
425 | } | |
426 | ||
427 | Cell cell = new Cell(); | |
3405b554 KL |
428 | if ((width != textWidth) || (height != textHeight)) { |
429 | BufferedImage newImage; | |
430 | newImage = new BufferedImage(textWidth, textHeight, | |
431 | BufferedImage.TYPE_INT_ARGB); | |
432 | ||
433 | java.awt.Graphics gr = newImage.getGraphics(); | |
434 | gr.drawImage(image.getSubimage(x * textWidth, | |
435 | y * textHeight, width, height), | |
436 | 0, 0, null, null); | |
437 | gr.dispose(); | |
438 | cell.setImage(newImage); | |
439 | } else { | |
440 | cell.setImage(image.getSubimage(x * textWidth, | |
441 | y * textHeight, width, height)); | |
442 | } | |
a69ed767 KL |
443 | |
444 | cells[x][y] = cell; | |
445 | } | |
446 | } | |
447 | ||
448 | lastTextWidth = textWidth; | |
449 | lastTextHeight = textHeight; | |
450 | } | |
451 | ||
452 | if ((left + getWidth()) > cellColumns) { | |
453 | left = cellColumns - getWidth(); | |
454 | } | |
455 | if (left < 0) { | |
456 | left = 0; | |
457 | } | |
458 | if ((top + getHeight()) > cellRows) { | |
459 | top = cellRows - getHeight(); | |
460 | } | |
461 | if (top < 0) { | |
462 | top = 0; | |
463 | } | |
464 | } | |
465 | ||
466 | /** | |
467 | * Get the top corner to render. | |
468 | * | |
469 | * @return the top row | |
470 | */ | |
471 | public int getTop() { | |
472 | return top; | |
473 | } | |
474 | ||
475 | /** | |
476 | * Set the top corner to render. | |
477 | * | |
478 | * @param top the new top row | |
479 | */ | |
480 | public void setTop(final int top) { | |
481 | this.top = top; | |
482 | if (this.top > cellRows - getHeight()) { | |
483 | this.top = cellRows - getHeight(); | |
484 | } | |
485 | if (this.top < 0) { | |
486 | this.top = 0; | |
487 | } | |
488 | } | |
489 | ||
490 | /** | |
491 | * Get the left corner to render. | |
492 | * | |
493 | * @return the left column | |
494 | */ | |
495 | public int getLeft() { | |
496 | return left; | |
497 | } | |
498 | ||
499 | /** | |
500 | * Set the left corner to render. | |
501 | * | |
502 | * @param left the new left column | |
503 | */ | |
504 | public void setLeft(final int left) { | |
505 | this.left = left; | |
506 | if (this.left > cellColumns - getWidth()) { | |
507 | this.left = cellColumns - getWidth(); | |
508 | } | |
509 | if (this.left < 0) { | |
510 | this.left = 0; | |
511 | } | |
512 | } | |
513 | ||
514 | /** | |
515 | * Get the number of text cell rows for this image. | |
516 | * | |
517 | * @return the number of rows | |
518 | */ | |
519 | public int getRows() { | |
520 | return cellRows; | |
521 | } | |
522 | ||
523 | /** | |
524 | * Get the number of text cell columns for this image. | |
525 | * | |
526 | * @return the number of columns | |
527 | */ | |
528 | public int getColumns() { | |
529 | return cellColumns; | |
530 | } | |
531 | ||
b2441422 KL |
532 | /** |
533 | * Get the raw (unprocessed) image. | |
534 | * | |
535 | * @return the image | |
536 | */ | |
537 | public BufferedImage getImage() { | |
538 | return originalImage; | |
539 | } | |
540 | ||
541 | /** | |
542 | * Set the raw image, and reprocess to make the visible image. | |
543 | * | |
544 | * @param image the new image | |
545 | */ | |
546 | public void setImage(final BufferedImage image) { | |
547 | this.originalImage = image; | |
548 | this.image = null; | |
549 | sizeToImage(true); | |
550 | } | |
551 | ||
552 | /** | |
553 | * Get the visible (processed) image. | |
554 | * | |
555 | * @return the image that is currently on screen | |
556 | */ | |
557 | public BufferedImage getVisibleImage() { | |
558 | return image; | |
559 | } | |
560 | ||
561 | /** | |
562 | * Get the scaling strategy. | |
563 | * | |
564 | * @return Scale.NONE, Scale.STRETCH, etc. | |
565 | */ | |
566 | public Scale getScaleType() { | |
567 | return scale; | |
568 | } | |
569 | ||
570 | /** | |
571 | * Set the scaling strategy. | |
572 | * | |
573 | * @param scale Scale.NONE, Scale.STRETCH, etc. | |
574 | */ | |
575 | public void setScaleType(final Scale scale) { | |
576 | this.scale = scale; | |
577 | this.image = null; | |
578 | sizeToImage(true); | |
579 | } | |
580 | ||
581 | /** | |
582 | * Get the scale factor. | |
583 | * | |
584 | * @return the scale factor | |
585 | */ | |
586 | public double getScaleFactor() { | |
587 | return scaleFactor; | |
588 | } | |
589 | ||
590 | /** | |
591 | * Set the scale factor. 1.0 means no scaling. | |
592 | * | |
593 | * @param scaleFactor the new scale factor | |
594 | */ | |
595 | public void setScaleFactor(final double scaleFactor) { | |
596 | this.scaleFactor = scaleFactor; | |
597 | image = null; | |
598 | sizeToImage(true); | |
599 | } | |
600 | ||
601 | /** | |
602 | * Get the rotation, as degrees. | |
603 | * | |
604 | * @return the rotation in degrees | |
605 | */ | |
606 | public int getRotation() { | |
607 | switch (clockwise) { | |
608 | case 0: | |
609 | return 0; | |
610 | case 1: | |
611 | return 90; | |
612 | case 2: | |
613 | return 180; | |
614 | case 3: | |
615 | return 270; | |
616 | default: | |
617 | // Don't know how this happened, but fix it. | |
618 | clockwise = 0; | |
619 | image = null; | |
620 | sizeToImage(true); | |
621 | return 0; | |
622 | } | |
623 | } | |
624 | ||
625 | /** | |
626 | * Set the rotation, as degrees clockwise. | |
627 | * | |
628 | * @param rotation 0, 90, 180, or 270 | |
629 | */ | |
630 | public void setRotation(final int rotation) { | |
631 | switch (rotation) { | |
632 | case 0: | |
633 | clockwise = 0; | |
634 | break; | |
635 | case 90: | |
636 | clockwise = 1; | |
637 | break; | |
638 | case 180: | |
639 | clockwise = 2; | |
640 | break; | |
641 | case 270: | |
642 | clockwise = 3; | |
643 | break; | |
644 | default: | |
645 | // Don't know how this happened, but fix it. | |
646 | clockwise = 0; | |
647 | break; | |
648 | } | |
649 | ||
650 | image = null; | |
651 | sizeToImage(true); | |
652 | } | |
653 | ||
a69ed767 KL |
654 | /** |
655 | * Scale an image by to be scaleFactor size. | |
656 | * | |
657 | * @param image the image to scale | |
658 | * @param factor the scale to make the new image | |
b2441422 KL |
659 | * @param width the number of text cell columns for the destination image |
660 | * @param height the number of text cell rows for the destination image | |
661 | * @param textWidth the width in pixels for one text cell | |
662 | * @param textHeight the height in pixels for one text cell | |
a69ed767 KL |
663 | */ |
664 | private BufferedImage scaleImage(final BufferedImage image, | |
b2441422 KL |
665 | final double factor, final int width, final int height, |
666 | final int textWidth, final int textHeight) { | |
a69ed767 | 667 | |
b2441422 | 668 | if ((scale == Scale.NONE) && (Math.abs(factor - 1.0) < 0.03)) { |
a69ed767 KL |
669 | // If we are within 3% of 1.0, just return the original image. |
670 | return image; | |
671 | } | |
672 | ||
b2441422 KL |
673 | int destWidth = 0; |
674 | int destHeight = 0; | |
675 | int x = 0; | |
676 | int y = 0; | |
a69ed767 | 677 | |
b2441422 KL |
678 | BufferedImage newImage = null; |
679 | ||
680 | switch (scale) { | |
681 | case NONE: | |
682 | destWidth = (int) (image.getWidth() * factor); | |
683 | destHeight = (int) (image.getHeight() * factor); | |
684 | newImage = new BufferedImage(destWidth, destHeight, | |
685 | BufferedImage.TYPE_INT_ARGB); | |
686 | break; | |
687 | case STRETCH: | |
688 | destWidth = width * textWidth; | |
689 | destHeight = height * textHeight; | |
690 | newImage = new BufferedImage(destWidth, destHeight, | |
691 | BufferedImage.TYPE_INT_ARGB); | |
692 | break; | |
693 | case SCALE: | |
694 | double a = (double) image.getWidth() / image.getHeight(); | |
695 | double b = (double) (width * textWidth) / (height * textHeight); | |
696 | assert (a > 0); | |
697 | assert (b > 0); | |
698 | ||
699 | /* | |
700 | System.err.println("Scale: original " + image.getWidth() + | |
701 | "x" + image.getHeight()); | |
702 | System.err.println(" screen " + (width * textWidth) + | |
703 | "x" + (height * textHeight)); | |
704 | System.err.println("A " + a + " B " + b); | |
705 | */ | |
706 | ||
707 | if (a > b) { | |
708 | // Horizontal letterbox | |
709 | destWidth = width * textWidth; | |
710 | destHeight = (int) (destWidth / a); | |
711 | y = ((height * textHeight) - destHeight) / 2; | |
712 | assert (y >= 0); | |
713 | /* | |
714 | System.err.println("Horizontal letterbox: " + destWidth + | |
715 | "x" + destHeight + ", Y offset " + y); | |
716 | */ | |
717 | } else { | |
718 | // Vertical letterbox | |
719 | destHeight = height * textHeight; | |
720 | destWidth = (int) (destHeight * a); | |
721 | x = ((width * textWidth) - destWidth) / 2; | |
722 | assert (x >= 0); | |
723 | /* | |
724 | System.err.println("Vertical letterbox: " + destWidth + | |
725 | "x" + destHeight + ", X offset " + x); | |
726 | */ | |
727 | } | |
728 | newImage = new BufferedImage(width * textWidth, height * textHeight, | |
729 | BufferedImage.TYPE_INT_ARGB); | |
730 | break; | |
731 | } | |
a69ed767 KL |
732 | |
733 | java.awt.Graphics gr = newImage.createGraphics(); | |
b2441422 KL |
734 | if (scale == Scale.SCALE) { |
735 | gr.setColor(scaleBackColor); | |
736 | gr.fillRect(0, 0, width * textWidth, height * textHeight); | |
737 | } | |
738 | gr.drawImage(image, x, y, destWidth, destHeight, null); | |
a69ed767 | 739 | gr.dispose(); |
a69ed767 KL |
740 | return newImage; |
741 | } | |
742 | ||
743 | /** | |
744 | * Rotate an image either clockwise or counterclockwise. | |
745 | * | |
746 | * @param image the image to scale | |
747 | * @param clockwise number of turns clockwise | |
748 | */ | |
749 | private BufferedImage rotateImage(final BufferedImage image, | |
750 | final int clockwise) { | |
751 | ||
752 | if (clockwise % 4 == 0) { | |
753 | return image; | |
754 | } | |
755 | ||
756 | BufferedImage newImage = null; | |
757 | ||
758 | if (clockwise % 4 == 1) { | |
759 | // 90 degrees clockwise | |
760 | newImage = new BufferedImage(image.getHeight(), image.getWidth(), | |
761 | BufferedImage.TYPE_INT_ARGB); | |
762 | for (int x = 0; x < image.getWidth(); x++) { | |
763 | for (int y = 0; y < image.getHeight(); y++) { | |
764 | newImage.setRGB(y, x, | |
765 | image.getRGB(x, image.getHeight() - 1 - y)); | |
766 | } | |
767 | } | |
768 | } else if (clockwise % 4 == 2) { | |
769 | // 180 degrees clockwise | |
770 | newImage = new BufferedImage(image.getWidth(), image.getHeight(), | |
771 | BufferedImage.TYPE_INT_ARGB); | |
772 | for (int x = 0; x < image.getWidth(); x++) { | |
773 | for (int y = 0; y < image.getHeight(); y++) { | |
774 | newImage.setRGB(x, y, | |
775 | image.getRGB(image.getWidth() - 1 - x, | |
776 | image.getHeight() - 1 - y)); | |
777 | } | |
778 | } | |
779 | } else if (clockwise % 4 == 3) { | |
780 | // 270 degrees clockwise | |
781 | newImage = new BufferedImage(image.getHeight(), image.getWidth(), | |
782 | BufferedImage.TYPE_INT_ARGB); | |
783 | for (int x = 0; x < image.getWidth(); x++) { | |
784 | for (int y = 0; y < image.getHeight(); y++) { | |
785 | newImage.setRGB(y, x, | |
786 | image.getRGB(image.getWidth() - 1 - x, y)); | |
787 | } | |
788 | } | |
789 | } | |
790 | ||
791 | return newImage; | |
792 | } | |
793 | ||
f8b30e4b KL |
794 | // ------------------------------------------------------------------------ |
795 | // EditMenuUser ----------------------------------------------------------- | |
796 | // ------------------------------------------------------------------------ | |
797 | ||
798 | /** | |
799 | * Check if the cut menu item should be enabled. | |
800 | * | |
801 | * @return true if the cut menu item should be enabled | |
802 | */ | |
803 | public boolean isEditMenuCut() { | |
804 | return false; | |
805 | } | |
806 | ||
807 | /** | |
808 | * Check if the copy menu item should be enabled. | |
809 | * | |
810 | * @return true if the copy menu item should be enabled | |
811 | */ | |
812 | public boolean isEditMenuCopy() { | |
813 | return true; | |
814 | } | |
815 | ||
816 | /** | |
817 | * Check if the paste menu item should be enabled. | |
818 | * | |
819 | * @return true if the paste menu item should be enabled | |
820 | */ | |
821 | public boolean isEditMenuPaste() { | |
822 | return false; | |
823 | } | |
824 | ||
825 | /** | |
826 | * Check if the clear menu item should be enabled. | |
827 | * | |
828 | * @return true if the clear menu item should be enabled | |
829 | */ | |
830 | public boolean isEditMenuClear() { | |
831 | return false; | |
832 | } | |
833 | ||
a69ed767 | 834 | } |