J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2004 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | package sun.swing.plaf.synth; |
| 26 | |
| 27 | import java.awt.*; |
| 28 | import java.awt.image.BufferedImage; |
| 29 | import sun.swing.CachedPainter; |
| 30 | |
| 31 | /** |
| 32 | * Paint9Painter is used for painting images for both Synth and GTK's |
| 33 | * pixmap/blueprint engines. |
| 34 | * |
| 35 | */ |
| 36 | public class Paint9Painter extends CachedPainter { |
| 37 | /** |
| 38 | * Enumeration for the types of painting this class can handle. |
| 39 | */ |
| 40 | public enum PaintType { |
| 41 | /** |
| 42 | * Painting type indicating the image should be centered in |
| 43 | * the space provided. When used the <code>mask</code> is ignored. |
| 44 | */ |
| 45 | CENTER, |
| 46 | |
| 47 | /** |
| 48 | * Painting type indicating the image should be tiled across the |
| 49 | * specified width and height. When used the <code>mask</code> is |
| 50 | * ignored. |
| 51 | */ |
| 52 | TILE, |
| 53 | |
| 54 | /** |
| 55 | * Painting type indicating the image should be split into nine |
| 56 | * regions with the top, left, bottom and right areas stretched. |
| 57 | */ |
| 58 | PAINT9_STRETCH, |
| 59 | |
| 60 | /** |
| 61 | * Painting type indicating the image should be split into nine |
| 62 | * regions with the top, left, bottom and right areas tiled. |
| 63 | */ |
| 64 | PAINT9_TILE |
| 65 | }; |
| 66 | |
| 67 | private static final Insets EMPTY_INSETS = new Insets(0, 0, 0, 0); |
| 68 | |
| 69 | public static final int PAINT_TOP_LEFT = 1; |
| 70 | public static final int PAINT_TOP = 2; |
| 71 | public static final int PAINT_TOP_RIGHT = 4; |
| 72 | public static final int PAINT_LEFT = 8; |
| 73 | public static final int PAINT_CENTER = 16; |
| 74 | public static final int PAINT_RIGHT = 32; |
| 75 | public static final int PAINT_BOTTOM_RIGHT = 64; |
| 76 | public static final int PAINT_BOTTOM = 128; |
| 77 | public static final int PAINT_BOTTOM_LEFT = 256; |
| 78 | /** |
| 79 | * Specifies that all regions should be painted. If this is set any |
| 80 | * other regions specified will not be painted. For example |
| 81 | * PAINT_ALL | PAINT_CENTER will paint all but the center. |
| 82 | */ |
| 83 | public static final int PAINT_ALL = 512; |
| 84 | |
| 85 | /** |
| 86 | * Conveniance method for testing the validity of an image. |
| 87 | * |
| 88 | * @param image Image to check. |
| 89 | * @return true if <code>image</code> is non-null and has a positive |
| 90 | * size. |
| 91 | */ |
| 92 | public static boolean validImage(Image image) { |
| 93 | return (image != null && image.getWidth(null) > 0 && |
| 94 | image.getHeight(null) > 0); |
| 95 | } |
| 96 | |
| 97 | |
| 98 | public Paint9Painter(int cacheCount) { |
| 99 | super(cacheCount); |
| 100 | } |
| 101 | |
| 102 | /** |
| 103 | * Paints using the algorightm specified by <code>paintType</code>. |
| 104 | * NOTE that this just invokes super.paint(...) with the same |
| 105 | * argument ordering as this method. |
| 106 | * |
| 107 | * @param c Component rendering to |
| 108 | * @param g Graphics to render to |
| 109 | * @param x X-coordinate |
| 110 | * @param y Y-coordinate |
| 111 | * @param w Width to render to |
| 112 | * @param h Height to render to |
| 113 | * @param source Image to render from, if <code>null</code> this method |
| 114 | * will do nothing |
| 115 | * @param sInsets Insets specifying the portion of the image that |
| 116 | * will be stretched or tiled, if <code>null</code> empty |
| 117 | * <code>Insets</code> will be used. |
| 118 | * @param dInsets Destination insets specifying the portion of the image |
| 119 | * will be stretched or tiled, if <code>null</code> empty |
| 120 | * <code>Insets</code> will be used. |
| 121 | * @param paintType Specifies what type of algorithm to use in painting |
| 122 | * @param mask Specifies portion of image to render, if |
| 123 | * <code>PAINT_ALL</code> is specified, any other regions |
| 124 | * specified will not be painted, for example |
| 125 | * PAINT_ALL | PAINT_CENTER paints everything but the center. |
| 126 | */ |
| 127 | public void paint(Component c, Graphics g, int x, |
| 128 | int y, int w, int h, Image source, Insets sInsets, |
| 129 | Insets dInsets, |
| 130 | PaintType type, int mask) { |
| 131 | if (source == null) { |
| 132 | return; |
| 133 | } |
| 134 | super.paint(c, g, x, y, w, h, source, sInsets, dInsets, type, mask); |
| 135 | } |
| 136 | |
| 137 | protected void paintToImage(Component c, Image destImage, Graphics g, |
| 138 | int w, int h, Object[] args) { |
| 139 | int argIndex = 0; |
| 140 | while (argIndex < args.length) { |
| 141 | Image image = (Image)args[argIndex++]; |
| 142 | Insets sInsets = (Insets)args[argIndex++]; |
| 143 | Insets dInsets = (Insets)args[argIndex++]; |
| 144 | PaintType type = (PaintType)args[argIndex++]; |
| 145 | int mask = (Integer)args[argIndex++]; |
| 146 | paint9(g, 0, 0, w, h, image, sInsets, dInsets, type, mask); |
| 147 | } |
| 148 | } |
| 149 | |
| 150 | protected void paint9(Graphics g, int x, int y, int w, int h, |
| 151 | Image image, Insets sInsets, |
| 152 | Insets dInsets, PaintType type, int componentMask) { |
| 153 | if (!validImage(image)) { |
| 154 | return; |
| 155 | } |
| 156 | if (sInsets == null) { |
| 157 | sInsets = EMPTY_INSETS; |
| 158 | } |
| 159 | if (dInsets == null) { |
| 160 | dInsets = EMPTY_INSETS; |
| 161 | } |
| 162 | int iw = image.getWidth(null); |
| 163 | int ih = image.getHeight(null); |
| 164 | |
| 165 | if (type == PaintType.CENTER) { |
| 166 | // Center the image |
| 167 | g.drawImage(image, x + (w - iw) / 2, |
| 168 | y + (h - ih) / 2, null); |
| 169 | } |
| 170 | else if (type == PaintType.TILE) { |
| 171 | // Tile the image |
| 172 | int lastIY = 0; |
| 173 | for (int yCounter = y, maxY = y + h; yCounter < maxY; |
| 174 | yCounter += (ih - lastIY), lastIY = 0) { |
| 175 | int lastIX = 0; |
| 176 | for (int xCounter = x, maxX = x + w; xCounter < maxX; |
| 177 | xCounter += (iw - lastIX), lastIX = 0) { |
| 178 | int dx2 = Math.min(maxX, xCounter + iw - lastIX); |
| 179 | int dy2 = Math.min(maxY, yCounter + ih - lastIY); |
| 180 | g.drawImage(image, xCounter, yCounter, dx2, dy2, |
| 181 | lastIX, lastIY, lastIX + dx2 - xCounter, |
| 182 | lastIY + dy2 - yCounter, null); |
| 183 | } |
| 184 | } |
| 185 | } |
| 186 | else { |
| 187 | int st = sInsets.top; |
| 188 | int sl = sInsets.left; |
| 189 | int sb = sInsets.bottom; |
| 190 | int sr = sInsets.right; |
| 191 | |
| 192 | int dt = dInsets.top; |
| 193 | int dl = dInsets.left; |
| 194 | int db = dInsets.bottom; |
| 195 | int dr = dInsets.right; |
| 196 | |
| 197 | // Constrain the insets to the size of the image |
| 198 | if (st + sb > ih) { |
| 199 | db = dt = sb = st = Math.max(0, ih / 2); |
| 200 | } |
| 201 | if (sl + sr > iw) { |
| 202 | dl = dr = sl = sr = Math.max(0, iw / 2); |
| 203 | } |
| 204 | |
| 205 | // Constrain the insets to the size of the region we're painting |
| 206 | // in. |
| 207 | if (dt + db > h) { |
| 208 | dt = db = Math.max(0, h / 2 - 1); |
| 209 | } |
| 210 | if (dl + dr > w) { |
| 211 | dl = dr = Math.max(0, w / 2 - 1); |
| 212 | } |
| 213 | |
| 214 | boolean stretch = (type == PaintType.PAINT9_STRETCH); |
| 215 | if ((componentMask & PAINT_ALL) != 0) { |
| 216 | componentMask = (PAINT_ALL - 1) & ~componentMask; |
| 217 | } |
| 218 | |
| 219 | if ((componentMask & PAINT_LEFT) != 0) { |
| 220 | drawChunk(image, g, stretch, x, y + dt, x + dl, y + h - db, |
| 221 | 0, st, sl, ih - sb, false); |
| 222 | } |
| 223 | if ((componentMask & PAINT_TOP_LEFT) != 0) { |
| 224 | drawImage(image, g, x, y, x + dl, y + dt, |
| 225 | 0, 0, sl, st); |
| 226 | } |
| 227 | if ((componentMask & PAINT_TOP) != 0) { |
| 228 | drawChunk(image, g, stretch, x + dl, y, x + w - dr, y + dt, |
| 229 | sl, 0, iw - sr, st, true); |
| 230 | } |
| 231 | if ((componentMask & PAINT_TOP_RIGHT) != 0) { |
| 232 | drawImage(image, g, x + w - dr, y, x + w, y + dt, |
| 233 | iw - sr, 0, iw, st); |
| 234 | } |
| 235 | if ((componentMask & PAINT_RIGHT) != 0) { |
| 236 | drawChunk(image, g, stretch, |
| 237 | x + w - dr, y + dt, x + w, y + h - db, |
| 238 | iw - sr, st, iw, ih - sb, false); |
| 239 | } |
| 240 | if ((componentMask & PAINT_BOTTOM_RIGHT) != 0) { |
| 241 | drawImage(image, g, x + w - dr, y + h - db, x + w, y + h, |
| 242 | iw - sr, ih - sb, iw, ih); |
| 243 | } |
| 244 | if ((componentMask & PAINT_BOTTOM) != 0) { |
| 245 | drawChunk(image, g, stretch, |
| 246 | x + dl, y + h - db, x + w - dr, y + h, |
| 247 | sl, ih - sb, iw - sr, ih, true); |
| 248 | } |
| 249 | if ((componentMask & PAINT_BOTTOM_LEFT) != 0) { |
| 250 | drawImage(image, g, x, y + h - db, x + dl, y + h, |
| 251 | 0, ih - sb, sl, ih); |
| 252 | } |
| 253 | if ((componentMask & PAINT_CENTER) != 0) { |
| 254 | drawImage(image, g, x + dl, y + dt, x + w - dr, y + h - db, |
| 255 | sl, st, iw - sr, ih - sb); |
| 256 | } |
| 257 | } |
| 258 | } |
| 259 | |
| 260 | private void drawImage(Image image, Graphics g, |
| 261 | int dx1, int dy1, int dx2, int dy2, int sx1, |
| 262 | int sy1, int sx2, int sy2) { |
| 263 | // PENDING: is this necessary, will G2D do it for me? |
| 264 | if (dx2 - dx1 <= 0 || dy2 - dy1 <= 0 || sx2 - sx1 <= 0 || |
| 265 | sy2 - sy1 <= 0) { |
| 266 | // Bogus location, nothing to paint |
| 267 | return; |
| 268 | } |
| 269 | g.drawImage(image, dx1, dy1, dx2, dy2, sx1, sy1, sx2, sy2, null); |
| 270 | } |
| 271 | |
| 272 | /** |
| 273 | * Draws a portion of an image, stretched or tiled. |
| 274 | * |
| 275 | * @param image Image to render. |
| 276 | * @param g Graphics to render to |
| 277 | * @param stretch Whether the image should be stretched or timed in the |
| 278 | * provided space. |
| 279 | * @param dx1 X origin to draw to |
| 280 | * @param dy1 Y origin to draw to |
| 281 | * @param dx2 End x location to draw to |
| 282 | * @param dy2 End y location to draw to |
| 283 | * @param sx1 X origin to draw from |
| 284 | * @param sy1 Y origin to draw from |
| 285 | * @param sx2 Max x location to draw from |
| 286 | * @param sy2 Max y location to draw from |
| 287 | * @param xDirection Used if the image is not stretched. If true it |
| 288 | * indicates the image should be tiled along the x axis. |
| 289 | */ |
| 290 | private void drawChunk(Image image, Graphics g, boolean stretch, |
| 291 | int dx1, int dy1, int dx2, int dy2, int sx1, |
| 292 | int sy1, int sx2, int sy2, |
| 293 | boolean xDirection) { |
| 294 | if (dx2 - dx1 <= 0 || dy2 - dy1 <= 0 || sx2 - sx1 <= 0 || |
| 295 | sy2 - sy1 <= 0) { |
| 296 | // Bogus location, nothing to paint |
| 297 | return; |
| 298 | } |
| 299 | if (stretch) { |
| 300 | g.drawImage(image, dx1, dy1, dx2, dy2, sx1, sy1, sx2, sy2, null); |
| 301 | } |
| 302 | else { |
| 303 | int xSize = sx2 - sx1; |
| 304 | int ySize = sy2 - sy1; |
| 305 | int deltaX; |
| 306 | int deltaY; |
| 307 | |
| 308 | if (xDirection) { |
| 309 | deltaX = xSize; |
| 310 | deltaY = 0; |
| 311 | } |
| 312 | else { |
| 313 | deltaX = 0; |
| 314 | deltaY = ySize; |
| 315 | } |
| 316 | while (dx1 < dx2 && dy1 < dy2) { |
| 317 | int newDX2 = Math.min(dx2, dx1 + xSize); |
| 318 | int newDY2 = Math.min(dy2, dy1 + ySize); |
| 319 | |
| 320 | g.drawImage(image, dx1, dy1, newDX2, newDY2, |
| 321 | sx1, sy1, sx1 + newDX2 - dx1, |
| 322 | sy1 + newDY2 - dy1, null); |
| 323 | dx1 += deltaX; |
| 324 | dy1 += deltaY; |
| 325 | } |
| 326 | } |
| 327 | } |
| 328 | |
| 329 | /** |
| 330 | * Subclassed to always create a translucent image. |
| 331 | */ |
| 332 | protected Image createImage(Component c, int w, int h, |
| 333 | GraphicsConfiguration config, |
| 334 | Object[] args) { |
| 335 | if (config == null) { |
| 336 | return new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB); |
| 337 | } |
| 338 | return config.createCompatibleImage(w, h, Transparency.TRANSLUCENT); |
| 339 | } |
| 340 | } |