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