| 1 | // Jomic - a viewer for comic book archives. |
| 2 | // Copyright (C) 2004-2008 Thomas Aglassinger |
| 3 | // |
| 4 | // This program is free software: you can redistribute it and/or modify |
| 5 | // it under the terms of the GNU General Public License as published by |
| 6 | // the Free Software Foundation, either version 3 of the License, or |
| 7 | // (at your option) any later version. |
| 8 | // |
| 9 | // This program is distributed in the hope that it will be useful, |
| 10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | // GNU General Public License for more details. |
| 13 | // |
| 14 | // You should have received a copy of the GNU General Public License |
| 15 | // along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 16 | package net.sf.jomic.comic; |
| 17 | |
| 18 | import java.awt.Adjustable; |
| 19 | import java.awt.BorderLayout; |
| 20 | import java.awt.Color; |
| 21 | import java.awt.Dimension; |
| 22 | import java.awt.Graphics; |
| 23 | import java.awt.Graphics2D; |
| 24 | import java.awt.event.ComponentEvent; |
| 25 | import java.awt.event.ComponentListener; |
| 26 | import java.awt.event.MouseEvent; |
| 27 | import java.awt.event.MouseListener; |
| 28 | import java.awt.event.MouseWheelEvent; |
| 29 | import java.awt.event.MouseWheelListener; |
| 30 | import java.awt.geom.AffineTransform; |
| 31 | import java.awt.geom.Rectangle2D; |
| 32 | import java.awt.image.RenderedImage; |
| 33 | import java.io.File; |
| 34 | import java.util.Arrays; |
| 35 | |
| 36 | import javax.swing.DefaultListSelectionModel; |
| 37 | import javax.swing.JComponent; |
| 38 | import javax.swing.JPanel; |
| 39 | import javax.swing.JScrollBar; |
| 40 | import javax.swing.ListSelectionModel; |
| 41 | import javax.swing.UIManager; |
| 42 | import javax.swing.event.ChangeEvent; |
| 43 | import javax.swing.event.ChangeListener; |
| 44 | import javax.swing.event.ListSelectionListener; |
| 45 | |
| 46 | import net.sf.jomic.tools.ImageInCacheListener; |
| 47 | import net.sf.jomic.tools.ImageTools; |
| 48 | import net.sf.wraplog.Logger; |
| 49 | |
| 50 | /** |
| 51 | * JPanel to show all pages of a comic as thumbnails. |
| 52 | * |
| 53 | * @author Thomas Aglassinger |
| 54 | */ |
| 55 | public class ComicThumbView |
| 56 | extends JPanel |
| 57 | implements ChangeListener, ComponentListener, ListSelectionModel, MouseListener, MouseWheelListener |
| 58 | { |
| 59 | private static final int INSET_X = 5; |
| 60 | private static final int INSET_Y = 2; |
| 61 | private static final int PREFERRED_THUMBS_IN_VIEW = 5; |
| 62 | private ComicModel comic; |
| 63 | private ComicCache comicCache; |
| 64 | private Object comicLock; |
| 65 | private ImageTools imageTools; |
| 66 | private Logger logger; |
| 67 | private int maxThumbHeight; |
| 68 | private int maxThumbWidth; |
| 69 | private JScrollBar scrollBar; |
| 70 | private Color selectionColor; |
| 71 | private ListSelectionModel selectionModel; |
| 72 | private ThumbPanel thumbPanel; |
| 73 | private Dimension[] thumbSizes; |
| 74 | private int[] thumbYs; |
| 75 | private int totalHeight; |
| 76 | private int totalWidth; |
| 77 | |
| 78 | public ComicThumbView() { |
| 79 | super(); |
| 80 | logger = Logger.getLogger(ComicThumbView.class); |
| 81 | imageTools = ImageTools.instance(); |
| 82 | comicCache = ComicCache.instance(); |
| 83 | |
| 84 | comicLock = "comicLock"; |
| 85 | maxThumbWidth = comicCache.getThumbWidth(); |
| 86 | maxThumbHeight = comicCache.getThumbHeight(); |
| 87 | selectionColor = UIManager.getColor("TextArea.selectionBackground"); |
| 88 | selectionModel = new DefaultListSelectionModel(); |
| 89 | selectionModel.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); |
| 90 | setLayout(new BorderLayout()); |
| 91 | thumbPanel = new ThumbPanel(); |
| 92 | scrollBar = new JScrollBar(Adjustable.VERTICAL); |
| 93 | scrollBar.getModel().addChangeListener(this); |
| 94 | |
| 95 | add(thumbPanel, BorderLayout.CENTER); |
| 96 | add(scrollBar, BorderLayout.EAST); |
| 97 | setComic(null); |
| 98 | addMouseListener(this); |
| 99 | addMouseWheelListener(this); |
| 100 | } |
| 101 | |
| 102 | public void setAnchorSelectionIndex(int arg0) { |
| 103 | selectionModel.setAnchorSelectionIndex(arg0); |
| 104 | } |
| 105 | |
| 106 | public void setComic(ComicModel newComic) { |
| 107 | synchronized (comicLock) { |
| 108 | comic = newComic; |
| 109 | totalHeight = 0; |
| 110 | totalWidth = 0; |
| 111 | if (comic == null) { |
| 112 | thumbSizes = null; |
| 113 | thumbYs = null; |
| 114 | } else { |
| 115 | // Compute thumb sizes |
| 116 | int imageCount = comic.getImageCount(); |
| 117 | |
| 118 | thumbSizes = new Dimension[imageCount]; |
| 119 | thumbYs = new int[imageCount]; |
| 120 | for (int i = 0; i < imageCount; i += 1) { |
| 121 | ComicImage comicImage = comic.getComicImage(i); |
| 122 | Dimension imageSize = new Dimension(comicImage.getWidth(), comicImage.getHeight()); |
| 123 | Dimension thumbSize = ImageTools.instance().getSqueezedDimension( |
| 124 | maxThumbWidth, maxThumbHeight, imageSize.width, imageSize.height, ImageTools.SCALE_FIT); |
| 125 | int thumbWidth = thumbSize.width; |
| 126 | |
| 127 | if (thumbWidth > totalWidth) { |
| 128 | totalWidth = thumbWidth; |
| 129 | } |
| 130 | thumbSizes[i] = thumbSize; |
| 131 | thumbYs[i] = totalHeight; |
| 132 | totalHeight += thumbSize.height + INSET_Y; |
| 133 | } |
| 134 | totalHeight += INSET_Y; |
| 135 | if (logger.isDebugEnabled()) { |
| 136 | int lastThumbIndex = thumbYs.length - 1; |
| 137 | |
| 138 | logger.debug("thumbYs[" + lastThumbIndex + "=" + thumbYs[lastThumbIndex]); |
| 139 | } |
| 140 | } |
| 141 | } |
| 142 | if (logger.isInfoEnabled()) { |
| 143 | logger.info("total size=" + totalWidth + "x" + totalHeight); |
| 144 | } |
| 145 | scrollBar.setEnabled(comic != null); |
| 146 | updateScrollbarModel(); |
| 147 | selectionModel.clearSelection(); |
| 148 | |
| 149 | // Compute preferred size of thumbPanel depending on thumbnails |
| 150 | int preferredWidth = totalWidth + 2 * INSET_X; |
| 151 | int preferredHeight = Math.max(totalHeight, |
| 152 | PREFERRED_THUMBS_IN_VIEW * maxThumbHeight |
| 153 | + (PREFERRED_THUMBS_IN_VIEW + 1) * INSET_Y); |
| 154 | |
| 155 | if (logger.isInfoEnabled()) { |
| 156 | logger.info("preferredSize=[" + preferredWidth + ", " + preferredHeight + "]"); |
| 157 | } |
| 158 | Dimension newPreferredSize = new Dimension(preferredWidth, preferredHeight); |
| 159 | |
| 160 | thumbPanel.setPreferredSize(newPreferredSize); |
| 161 | scrollBar.setValue(0); |
| 162 | repaint(); |
| 163 | } |
| 164 | |
| 165 | public void setLeadSelectionIndex(int newLeadSelectionIndex) { |
| 166 | selectionModel.setLeadSelectionIndex(newLeadSelectionIndex); |
| 167 | } |
| 168 | |
| 169 | public void setSelectionColor(Color newSelectionColor) { |
| 170 | selectionColor = newSelectionColor; |
| 171 | } |
| 172 | |
| 173 | public void setSelectionInterval(int arg0, int arg1) { |
| 174 | selectionModel.setSelectionInterval(arg0, arg1); |
| 175 | } |
| 176 | |
| 177 | public void setSelectionMode(int newMode) { |
| 178 | selectionModel.setSelectionMode(newMode); |
| 179 | } |
| 180 | |
| 181 | public void setValueIsAdjusting(boolean adjusting) { |
| 182 | selectionModel.setValueIsAdjusting(adjusting); |
| 183 | } |
| 184 | |
| 185 | public int getAnchorSelectionIndex() { |
| 186 | return selectionModel.getAnchorSelectionIndex(); |
| 187 | } |
| 188 | |
| 189 | public int getLeadSelectionIndex() { |
| 190 | return selectionModel.getLeadSelectionIndex(); |
| 191 | } |
| 192 | |
| 193 | public int getMaxSelectionIndex() { |
| 194 | return selectionModel.getMaxSelectionIndex(); |
| 195 | } |
| 196 | |
| 197 | public int getMinSelectionIndex() { |
| 198 | return selectionModel.getMaxSelectionIndex(); |
| 199 | } |
| 200 | |
| 201 | public Color getSelectionColor() { |
| 202 | return selectionColor; |
| 203 | } |
| 204 | |
| 205 | public int getSelectionMode() { |
| 206 | return selectionModel.getSelectionMode(); |
| 207 | } |
| 208 | |
| 209 | public boolean getValueIsAdjusting() { |
| 210 | return selectionModel.getValueIsAdjusting(); |
| 211 | } |
| 212 | |
| 213 | public boolean isSelectedIndex(int arg0) { |
| 214 | return selectionModel.isSelectedIndex(arg0); |
| 215 | } |
| 216 | |
| 217 | public boolean isSelectionEmpty() { |
| 218 | return selectionModel.isSelectionEmpty(); |
| 219 | } |
| 220 | |
| 221 | /** |
| 222 | * Get image index of thumbnail starting at or after y. |
| 223 | */ |
| 224 | int getThumbIndexAtOrAfterY(int y) { |
| 225 | assert comic != null; |
| 226 | assert y >= 0; |
| 227 | int result = Arrays.binarySearch(thumbYs, y); |
| 228 | |
| 229 | if (result < 0) { |
| 230 | result = -2 - result; |
| 231 | } |
| 232 | int lastThumbIndex = comic.getImageCount(); |
| 233 | |
| 234 | if (result < 0) { |
| 235 | result = 0; |
| 236 | } else if (result == lastThumbIndex) { |
| 237 | result = lastThumbIndex - 1; |
| 238 | } |
| 239 | assert result >= 0; |
| 240 | assert result <= lastThumbIndex; |
| 241 | int resultTopY = thumbYs[result]; |
| 242 | |
| 243 | // TODO: fix and enable assertion |
| 244 | //assert resultTopY >= y : "thumbYs[" + result + "]=" + resultTopY + " must be at least " + y; |
| 245 | return result; |
| 246 | } |
| 247 | |
| 248 | public void addListSelectionListener(ListSelectionListener listener) { |
| 249 | assert listener != null; |
| 250 | selectionModel.addListSelectionListener(listener); |
| 251 | } |
| 252 | |
| 253 | public void addSelectionInterval(int arg0, int arg1) { |
| 254 | selectionModel.addSelectionInterval(arg0, arg1); |
| 255 | } |
| 256 | |
| 257 | public void clearSelection() { |
| 258 | selectionModel.clearSelection(); |
| 259 | } |
| 260 | |
| 261 | public void componentHidden(ComponentEvent event) { |
| 262 | // Do nothing. |
| 263 | } |
| 264 | |
| 265 | public void componentMoved(ComponentEvent event) { |
| 266 | // Do nothing. |
| 267 | } |
| 268 | |
| 269 | public void componentResized(ComponentEvent event) { |
| 270 | updateScrollbarModel(); |
| 271 | } |
| 272 | |
| 273 | public void componentShown(ComponentEvent event) { |
| 274 | // Do nothing. |
| 275 | } |
| 276 | |
| 277 | public void dispose() { |
| 278 | removeMouseWheelListener(this); |
| 279 | removeMouseListener(this); |
| 280 | if (scrollBar != null) { |
| 281 | scrollBar.getModel().removeChangeListener(this); |
| 282 | } |
| 283 | } |
| 284 | |
| 285 | public void insertIndexInterval(int arg0, int arg1, boolean arg2) { |
| 286 | selectionModel.insertIndexInterval(arg0, arg1, arg2); |
| 287 | } |
| 288 | |
| 289 | public void mouseClicked(MouseEvent event) { |
| 290 | // Do nothing. |
| 291 | } |
| 292 | |
| 293 | public void mouseEntered(MouseEvent event) { |
| 294 | // Do nothing. |
| 295 | } |
| 296 | |
| 297 | public void mouseExited(MouseEvent event) { |
| 298 | // Do nothing. |
| 299 | } |
| 300 | |
| 301 | public void mousePressed(MouseEvent event) { |
| 302 | // Do nothing. |
| 303 | } |
| 304 | |
| 305 | public void mouseReleased(MouseEvent event) { |
| 306 | if (comic != null) { |
| 307 | int mouseY = event.getY(); |
| 308 | |
| 309 | synchronized (comicLock) { |
| 310 | int selectionY = mouseY + scrollBar.getValue(); |
| 311 | int selectedThumbIndex = getThumbIndexAtOrAfterY(selectionY); |
| 312 | |
| 313 | if (logger.isInfoEnabled()) { |
| 314 | logger.info("thumbnail selected: imageIndex=" + selectedThumbIndex); |
| 315 | } |
| 316 | // TODO: support more than 1 selected item and add: selectionModel.clearSelection(); |
| 317 | selectionModel.setSelectionInterval(selectedThumbIndex, selectedThumbIndex); |
| 318 | } |
| 319 | repaint(); |
| 320 | } |
| 321 | } |
| 322 | |
| 323 | public void mouseWheelMoved(MouseWheelEvent event) { |
| 324 | if (event.getScrollType() == MouseWheelEvent.WHEEL_UNIT_SCROLL) { |
| 325 | int scrollSpeed = Math.max(1, comicCache.getThumbHeight() / 20); |
| 326 | int totalScrollAmount = scrollSpeed * event.getUnitsToScroll() * scrollBar.getUnitIncrement(); |
| 327 | |
| 328 | scrollBar.setValue(scrollBar.getValue() + totalScrollAmount); |
| 329 | } |
| 330 | } |
| 331 | |
| 332 | public void removeIndexInterval(int arg0, int arg1) { |
| 333 | selectionModel.removeIndexInterval(arg0, arg1); |
| 334 | } |
| 335 | |
| 336 | public void removeListSelectionListener(ListSelectionListener listener) { |
| 337 | assert listener != null; |
| 338 | selectionModel.removeListSelectionListener(listener); |
| 339 | } |
| 340 | |
| 341 | public void removeSelectionInterval(int arg0, int arg1) { |
| 342 | selectionModel.removeSelectionInterval(arg0, arg1); |
| 343 | } |
| 344 | |
| 345 | public void stateChanged(ChangeEvent event) { |
| 346 | assert event != null; |
| 347 | Object eventSource = event.getSource(); |
| 348 | |
| 349 | assert eventSource == scrollBar.getModel() : "event.source=" + eventSource; |
| 350 | repaint(); |
| 351 | } |
| 352 | |
| 353 | private void updateScrollbarModel() { |
| 354 | int extent = thumbPanel.getSize().height; |
| 355 | |
| 356 | scrollBar.setMinimum(0); |
| 357 | scrollBar.setMaximum(totalHeight); |
| 358 | scrollBar.setVisibleAmount(extent); |
| 359 | scrollBar.setBlockIncrement(extent); |
| 360 | } |
| 361 | |
| 362 | /** |
| 363 | * JComponent to draw thumbnails for comic images. |
| 364 | * |
| 365 | * @author Thomas Aglassinger |
| 366 | */ |
| 367 | private class ThumbPanel extends JComponent implements ImageInCacheListener |
| 368 | { |
| 369 | public ThumbPanel() { |
| 370 | super(); |
| 371 | } |
| 372 | |
| 373 | public void imageCached(File imageFile) { |
| 374 | // TODO: repaint only if new image is visible |
| 375 | repaint(); |
| 376 | } |
| 377 | |
| 378 | protected void paintComponent(Graphics g) { |
| 379 | if (isOpaque()) { |
| 380 | g.setColor(getBackground()); |
| 381 | g.fillRect(0, 0, getWidth(), getHeight()); |
| 382 | } |
| 383 | |
| 384 | if (comic != null) { |
| 385 | Graphics2D g2d = (Graphics2D) g.create(); |
| 386 | |
| 387 | try { |
| 388 | |
| 389 | g2d.setRenderingHints(imageTools.getRenderingHints()); |
| 390 | synchronized (comicLock) { |
| 391 | int topVisualY = scrollBar.getValue(); |
| 392 | int bottomVisualY = topVisualY + getSize().height; |
| 393 | int topThumbIndex = Arrays.binarySearch(thumbYs, topVisualY); |
| 394 | |
| 395 | if (topThumbIndex < 0) { |
| 396 | // Note: "-2" to ensure to also draw the partially visible previous image. |
| 397 | topThumbIndex = Math.max(0, -topThumbIndex - 2); |
| 398 | } else { |
| 399 | // Ensure that we do not attempt to draw the last+1 image when at bottom |
| 400 | topThumbIndex = Math.min(topThumbIndex, comic.getImageCount() - 1); |
| 401 | } |
| 402 | assert topThumbIndex >= 0 : "topThumbIndex=" + topThumbIndex; |
| 403 | int topThumbY = thumbYs[topThumbIndex]; |
| 404 | |
| 405 | if (topThumbIndex > 0) { |
| 406 | assert topVisualY >= topThumbY |
| 407 | : "topVisualY=" + topVisualY + " must be at least topThumbY=" + topThumbY; |
| 408 | } |
| 409 | if (logger.isInfoEnabled()) { |
| 410 | logger.info("paint: visualY=[" + topVisualY |
| 411 | + ".." + bottomVisualY |
| 412 | + "], topThumbY=" + topThumbY |
| 413 | + "@" + topThumbIndex |
| 414 | + "/" + comic.getImageCount()); |
| 415 | } |
| 416 | AffineTransform oldTransform = g2d.getTransform(); |
| 417 | |
| 418 | try { |
| 419 | int thumbIndex = topThumbIndex; |
| 420 | int y = topThumbY; |
| 421 | |
| 422 | g2d.translate(0, -topVisualY); |
| 423 | while ((y <= bottomVisualY) && (thumbIndex < comic.getImageCount())) { |
| 424 | int thumbWidth = thumbSizes[thumbIndex].width; |
| 425 | int thumbHeight = thumbSizes[thumbIndex].height; |
| 426 | int centerX = (totalWidth - thumbWidth) / 2; |
| 427 | |
| 428 | if (selectionModel.isSelectedIndex(thumbIndex)) { |
| 429 | g2d.setColor(getSelectionColor()); |
| 430 | |
| 431 | Rectangle2D.Double selectionRectangle = new Rectangle2D.Double( |
| 432 | 0, y, 2 * INSET_X + totalWidth, 2 * INSET_Y + thumbHeight); |
| 433 | |
| 434 | g2d.fill(selectionRectangle); |
| 435 | } |
| 436 | |
| 437 | File originalImageFile = comic.getComicImage(thumbIndex).getFile(); |
| 438 | RenderedImage image = comicCache.getThumbnail(originalImageFile, this); |
| 439 | AffineTransform imageTransform = AffineTransform.getTranslateInstance( |
| 440 | INSET_X + centerX, INSET_Y + y); |
| 441 | |
| 442 | g2d.drawRenderedImage(image, imageTransform); |
| 443 | thumbIndex += 1; |
| 444 | if (thumbIndex < comic.getImageCount()) { |
| 445 | y = thumbYs[thumbIndex]; |
| 446 | } |
| 447 | } |
| 448 | } finally { |
| 449 | g2d.setTransform(oldTransform); |
| 450 | } |
| 451 | } |
| 452 | } finally { |
| 453 | g2d.dispose(); |
| 454 | } |
| 455 | } |
| 456 | } |
| 457 | } |
| 458 | } |