J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1996-2007 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 | |
| 26 | package sun.java2d; |
| 27 | |
| 28 | import java.awt.Graphics; |
| 29 | import java.awt.Graphics2D; |
| 30 | import java.awt.RenderingHints; |
| 31 | import java.awt.RenderingHints.Key; |
| 32 | import java.awt.geom.Area; |
| 33 | import java.awt.geom.AffineTransform; |
| 34 | import java.awt.geom.NoninvertibleTransformException; |
| 35 | import java.awt.AlphaComposite; |
| 36 | import java.awt.BasicStroke; |
| 37 | import java.awt.image.BufferedImage; |
| 38 | import java.awt.image.BufferedImageOp; |
| 39 | import java.awt.image.RenderedImage; |
| 40 | import java.awt.image.renderable.RenderableImage; |
| 41 | import java.awt.image.renderable.RenderContext; |
| 42 | import java.awt.image.AffineTransformOp; |
| 43 | import java.awt.image.Raster; |
| 44 | import java.awt.image.SampleModel; |
| 45 | import java.awt.image.VolatileImage; |
| 46 | import java.awt.image.WritableRaster; |
| 47 | import java.awt.Image; |
| 48 | import java.awt.Composite; |
| 49 | import java.awt.Color; |
| 50 | import java.awt.color.ColorSpace; |
| 51 | import java.awt.image.DataBuffer; |
| 52 | import java.awt.image.ColorModel; |
| 53 | import java.awt.image.IndexColorModel; |
| 54 | import java.awt.image.DirectColorModel; |
| 55 | import java.awt.GraphicsConfiguration; |
| 56 | import java.awt.Paint; |
| 57 | import java.awt.GradientPaint; |
| 58 | import java.awt.LinearGradientPaint; |
| 59 | import java.awt.RadialGradientPaint; |
| 60 | import java.awt.TexturePaint; |
| 61 | import java.awt.geom.Point2D; |
| 62 | import java.awt.geom.Rectangle2D; |
| 63 | import java.awt.geom.PathIterator; |
| 64 | import java.awt.geom.GeneralPath; |
| 65 | import java.awt.Shape; |
| 66 | import java.awt.Stroke; |
| 67 | import java.awt.FontMetrics; |
| 68 | import java.awt.Rectangle; |
| 69 | import java.text.AttributedCharacterIterator; |
| 70 | import java.awt.Font; |
| 71 | import java.awt.image.ImageObserver; |
| 72 | import java.awt.image.ColorConvertOp; |
| 73 | import java.awt.Transparency; |
| 74 | import java.awt.font.GlyphVector; |
| 75 | import java.awt.font.TextLayout; |
| 76 | import sun.font.FontDesignMetrics; |
| 77 | import sun.font.StandardGlyphVector; |
| 78 | import sun.java2d.pipe.PixelDrawPipe; |
| 79 | import sun.java2d.pipe.PixelFillPipe; |
| 80 | import sun.java2d.pipe.ShapeDrawPipe; |
| 81 | import sun.java2d.pipe.ValidatePipe; |
| 82 | import sun.java2d.pipe.ShapeSpanIterator; |
| 83 | import sun.java2d.pipe.Region; |
| 84 | import sun.java2d.pipe.RegionIterator; |
| 85 | import sun.java2d.pipe.TextPipe; |
| 86 | import sun.java2d.pipe.DrawImagePipe; |
| 87 | import sun.java2d.pipe.LoopPipe; |
| 88 | import sun.java2d.loops.FontInfo; |
| 89 | import sun.java2d.loops.RenderLoops; |
| 90 | import sun.java2d.loops.CompositeType; |
| 91 | import sun.java2d.loops.SurfaceType; |
| 92 | import sun.java2d.loops.Blit; |
| 93 | import sun.java2d.loops.BlitBg; |
| 94 | import sun.java2d.loops.MaskFill; |
| 95 | import sun.font.FontManager; |
| 96 | import java.awt.font.FontRenderContext; |
| 97 | import sun.java2d.loops.XORComposite; |
| 98 | import sun.awt.ConstrainableGraphics; |
| 99 | import sun.awt.SunHints; |
| 100 | import java.util.Map; |
| 101 | import java.util.Iterator; |
| 102 | import sun.awt.image.OffScreenImage; |
| 103 | import sun.misc.PerformanceLogger; |
| 104 | |
| 105 | /** |
| 106 | * This is a the master Graphics2D superclass for all of the Sun |
| 107 | * Graphics implementations. This class relies on subclasses to |
| 108 | * manage the various device information, but provides an overall |
| 109 | * general framework for performing all of the requests in the |
| 110 | * Graphics and Graphics2D APIs. |
| 111 | * |
| 112 | * @author Jim Graham |
| 113 | */ |
| 114 | public final class SunGraphics2D |
| 115 | extends Graphics2D |
| 116 | implements ConstrainableGraphics, Cloneable |
| 117 | { |
| 118 | /* |
| 119 | * Attribute States |
| 120 | */ |
| 121 | /* Paint */ |
| 122 | public static final int PAINT_CUSTOM = 6; /* Any other Paint object */ |
| 123 | public static final int PAINT_TEXTURE = 5; /* Tiled Image */ |
| 124 | public static final int PAINT_RAD_GRADIENT = 4; /* Color RadialGradient */ |
| 125 | public static final int PAINT_LIN_GRADIENT = 3; /* Color LinearGradient */ |
| 126 | public static final int PAINT_GRADIENT = 2; /* Color Gradient */ |
| 127 | public static final int PAINT_ALPHACOLOR = 1; /* Non-opaque Color */ |
| 128 | public static final int PAINT_OPAQUECOLOR = 0; /* Opaque Color */ |
| 129 | |
| 130 | /* Composite*/ |
| 131 | public static final int COMP_CUSTOM = 3;/* Custom Composite */ |
| 132 | public static final int COMP_XOR = 2;/* XOR Mode Composite */ |
| 133 | public static final int COMP_ALPHA = 1;/* AlphaComposite */ |
| 134 | public static final int COMP_ISCOPY = 0;/* simple stores into destination, |
| 135 | * i.e. Src, SrcOverNoEa, and other |
| 136 | * alpha modes which replace |
| 137 | * the destination. |
| 138 | */ |
| 139 | |
| 140 | /* Stroke */ |
| 141 | public static final int STROKE_CUSTOM = 3; /* custom Stroke */ |
| 142 | public static final int STROKE_WIDE = 2; /* BasicStroke */ |
| 143 | public static final int STROKE_THINDASHED = 1; /* BasicStroke */ |
| 144 | public static final int STROKE_THIN = 0; /* BasicStroke */ |
| 145 | |
| 146 | /* Transform */ |
| 147 | public static final int TRANSFORM_GENERIC = 4; /* any 3x2 */ |
| 148 | public static final int TRANSFORM_TRANSLATESCALE = 3; /* scale XY */ |
| 149 | public static final int TRANSFORM_ANY_TRANSLATE = 2; /* non-int translate */ |
| 150 | public static final int TRANSFORM_INT_TRANSLATE = 1; /* int translate */ |
| 151 | public static final int TRANSFORM_ISIDENT = 0; /* Identity */ |
| 152 | |
| 153 | /* Clipping */ |
| 154 | public static final int CLIP_SHAPE = 2; /* arbitrary clip */ |
| 155 | public static final int CLIP_RECTANGULAR = 1; /* rectangular clip */ |
| 156 | public static final int CLIP_DEVICE = 0; /* no clipping set */ |
| 157 | |
| 158 | /* The following fields are used when the current Paint is a Color. */ |
| 159 | public int eargb; // ARGB value with ExtraAlpha baked in |
| 160 | public int pixel; // pixel value for eargb |
| 161 | |
| 162 | public SurfaceData surfaceData; |
| 163 | |
| 164 | public PixelDrawPipe drawpipe; |
| 165 | public PixelFillPipe fillpipe; |
| 166 | public DrawImagePipe imagepipe; |
| 167 | public ShapeDrawPipe shapepipe; |
| 168 | public TextPipe textpipe; |
| 169 | public MaskFill alphafill; |
| 170 | |
| 171 | public RenderLoops loops; |
| 172 | |
| 173 | public CompositeType imageComp; /* Image Transparency checked on fly */ |
| 174 | |
| 175 | public int paintState; |
| 176 | public int compositeState; |
| 177 | public int strokeState; |
| 178 | public int transformState; |
| 179 | public int clipState; |
| 180 | |
| 181 | public Color foregroundColor; |
| 182 | public Color backgroundColor; |
| 183 | |
| 184 | public AffineTransform transform; |
| 185 | public int transX; |
| 186 | public int transY; |
| 187 | |
| 188 | protected static final Stroke defaultStroke = new BasicStroke(); |
| 189 | protected static final Composite defaultComposite = AlphaComposite.SrcOver; |
| 190 | private static final Font defaultFont = |
| 191 | new Font(Font.DIALOG, Font.PLAIN, 12); |
| 192 | |
| 193 | public Paint paint; |
| 194 | public Stroke stroke; |
| 195 | public Composite composite; |
| 196 | protected Font font; |
| 197 | protected FontMetrics fontMetrics; |
| 198 | |
| 199 | public int renderHint; |
| 200 | public int antialiasHint; |
| 201 | public int textAntialiasHint; |
| 202 | private int fractionalMetricsHint; |
| 203 | |
| 204 | /* A gamma adjustment to the colour used in lcd text blitting */ |
| 205 | public int lcdTextContrast; |
| 206 | private static int lcdTextContrastDefaultValue = 140; |
| 207 | |
| 208 | private int interpolationHint; // raw value of rendering Hint |
| 209 | public int strokeHint; |
| 210 | |
| 211 | public int interpolationType; // algorithm choice based on |
| 212 | // interpolation and render Hints |
| 213 | |
| 214 | public RenderingHints hints; |
| 215 | |
| 216 | public Region constrainClip; // lightweight bounds |
| 217 | public int constrainX; |
| 218 | public int constrainY; |
| 219 | |
| 220 | public Region clipRegion; |
| 221 | public Shape usrClip; |
| 222 | protected Region devClip; // Actual physical drawable |
| 223 | |
| 224 | // cached state for text rendering |
| 225 | private boolean validFontInfo; |
| 226 | private FontInfo fontInfo; |
| 227 | private FontInfo glyphVectorFontInfo; |
| 228 | private FontRenderContext glyphVectorFRC; |
| 229 | |
| 230 | private final static int slowTextTransformMask = |
| 231 | AffineTransform.TYPE_GENERAL_TRANSFORM |
| 232 | | AffineTransform.TYPE_MASK_ROTATION |
| 233 | | AffineTransform.TYPE_FLIP; |
| 234 | |
| 235 | static { |
| 236 | if (PerformanceLogger.loggingEnabled()) { |
| 237 | PerformanceLogger.setTime("SunGraphics2D static initialization"); |
| 238 | } |
| 239 | } |
| 240 | |
| 241 | public SunGraphics2D(SurfaceData sd, Color fg, Color bg, Font f) { |
| 242 | surfaceData = sd; |
| 243 | foregroundColor = fg; |
| 244 | backgroundColor = bg; |
| 245 | |
| 246 | transform = new AffineTransform(); |
| 247 | stroke = defaultStroke; |
| 248 | composite = defaultComposite; |
| 249 | paint = foregroundColor; |
| 250 | |
| 251 | imageComp = CompositeType.SrcOverNoEa; |
| 252 | |
| 253 | renderHint = SunHints.INTVAL_RENDER_DEFAULT; |
| 254 | antialiasHint = SunHints.INTVAL_ANTIALIAS_OFF; |
| 255 | textAntialiasHint = SunHints.INTVAL_TEXT_ANTIALIAS_DEFAULT; |
| 256 | fractionalMetricsHint = SunHints.INTVAL_FRACTIONALMETRICS_OFF; |
| 257 | lcdTextContrast = lcdTextContrastDefaultValue; |
| 258 | interpolationHint = -1; |
| 259 | strokeHint = SunHints.INTVAL_STROKE_DEFAULT; |
| 260 | |
| 261 | interpolationType = AffineTransformOp.TYPE_NEAREST_NEIGHBOR; |
| 262 | |
| 263 | validateColor(); |
| 264 | |
| 265 | font = f; |
| 266 | if (font == null) { |
| 267 | font = defaultFont; |
| 268 | } |
| 269 | |
| 270 | loops = sd.getRenderLoops(this); |
| 271 | setDevClip(sd.getBounds()); |
| 272 | invalidatePipe(); |
| 273 | } |
| 274 | |
| 275 | protected Object clone() { |
| 276 | try { |
| 277 | SunGraphics2D g = (SunGraphics2D) super.clone(); |
| 278 | g.transform = new AffineTransform(this.transform); |
| 279 | if (hints != null) { |
| 280 | g.hints = (RenderingHints) this.hints.clone(); |
| 281 | } |
| 282 | /* FontInfos are re-used, so must be cloned too, if they |
| 283 | * are valid, and be nulled out if invalid. |
| 284 | * The implied trade-off is that there is more to be gained |
| 285 | * from re-using these objects than is lost by having to |
| 286 | * clone them when the SG2D is cloned. |
| 287 | */ |
| 288 | if (this.fontInfo != null) { |
| 289 | if (this.validFontInfo) { |
| 290 | g.fontInfo = (FontInfo)this.fontInfo.clone(); |
| 291 | } else { |
| 292 | g.fontInfo = null; |
| 293 | } |
| 294 | } |
| 295 | if (this.glyphVectorFontInfo != null) { |
| 296 | g.glyphVectorFontInfo = |
| 297 | (FontInfo)this.glyphVectorFontInfo.clone(); |
| 298 | g.glyphVectorFRC = this.glyphVectorFRC; |
| 299 | } |
| 300 | //g.invalidatePipe(); |
| 301 | return g; |
| 302 | } catch (CloneNotSupportedException e) { |
| 303 | } |
| 304 | return null; |
| 305 | } |
| 306 | |
| 307 | /** |
| 308 | * Create a new SunGraphics2D based on this one. |
| 309 | */ |
| 310 | public Graphics create() { |
| 311 | return (Graphics) clone(); |
| 312 | } |
| 313 | |
| 314 | public void setDevClip(int x, int y, int w, int h) { |
| 315 | Region c = constrainClip; |
| 316 | if (c == null) { |
| 317 | devClip = Region.getInstanceXYWH(x, y, w, h); |
| 318 | } else { |
| 319 | devClip = c.getIntersectionXYWH(x, y, w, h); |
| 320 | } |
| 321 | validateCompClip(); |
| 322 | } |
| 323 | |
| 324 | public void setDevClip(Rectangle r) { |
| 325 | setDevClip(r.x, r.y, r.width, r.height); |
| 326 | } |
| 327 | |
| 328 | /** |
| 329 | * Constrain rendering for lightweight objects. |
| 330 | * |
| 331 | * REMIND: This method will back off to the "workaround" |
| 332 | * of using translate and clipRect if the Graphics |
| 333 | * to be constrained has a complex transform. The |
| 334 | * drawback of the workaround is that the resulting |
| 335 | * clip and device origin cannot be "enforced". |
| 336 | * |
| 337 | * @exception IllegalStateException If the Graphics |
| 338 | * to be constrained has a complex transform. |
| 339 | */ |
| 340 | public void constrain(int x, int y, int w, int h) { |
| 341 | if ((x|y) != 0) { |
| 342 | translate(x, y); |
| 343 | } |
| 344 | if (transformState >= TRANSFORM_TRANSLATESCALE) { |
| 345 | clipRect(0, 0, w, h); |
| 346 | return; |
| 347 | } |
| 348 | x = constrainX = transX; |
| 349 | y = constrainY = transY; |
| 350 | w = Region.dimAdd(x, w); |
| 351 | h = Region.dimAdd(y, h); |
| 352 | Region c = constrainClip; |
| 353 | if (c == null) { |
| 354 | c = Region.getInstanceXYXY(x, y, w, h); |
| 355 | } else { |
| 356 | c = c.getIntersectionXYXY(x, y, w, h); |
| 357 | if (c == constrainClip) { |
| 358 | // Common case to ignore |
| 359 | return; |
| 360 | } |
| 361 | } |
| 362 | constrainClip = c; |
| 363 | if (!devClip.isInsideQuickCheck(c)) { |
| 364 | devClip = devClip.getIntersection(c); |
| 365 | validateCompClip(); |
| 366 | } |
| 367 | } |
| 368 | |
| 369 | protected static ValidatePipe invalidpipe = new ValidatePipe(); |
| 370 | |
| 371 | /* |
| 372 | * Invalidate the pipeline |
| 373 | */ |
| 374 | protected void invalidatePipe() { |
| 375 | drawpipe = invalidpipe; |
| 376 | fillpipe = invalidpipe; |
| 377 | shapepipe = invalidpipe; |
| 378 | textpipe = invalidpipe; |
| 379 | imagepipe = invalidpipe; |
| 380 | } |
| 381 | |
| 382 | public void validatePipe() { |
| 383 | surfaceData.validatePipe(this); |
| 384 | } |
| 385 | |
| 386 | /* |
| 387 | * Intersect two Shapes by the simplest method, attempting to produce |
| 388 | * a simplified result. |
| 389 | * The boolean arguments keep1 and keep2 specify whether or not |
| 390 | * the first or second shapes can be modified during the operation |
| 391 | * or whether that shape must be "kept" unmodified. |
| 392 | */ |
| 393 | Shape intersectShapes(Shape s1, Shape s2, boolean keep1, boolean keep2) { |
| 394 | if (s1 instanceof Rectangle && s2 instanceof Rectangle) { |
| 395 | return ((Rectangle) s1).intersection((Rectangle) s2); |
| 396 | } |
| 397 | if (s1 instanceof Rectangle2D) { |
| 398 | return intersectRectShape((Rectangle2D) s1, s2, keep1, keep2); |
| 399 | } else if (s2 instanceof Rectangle2D) { |
| 400 | return intersectRectShape((Rectangle2D) s2, s1, keep2, keep1); |
| 401 | } |
| 402 | return intersectByArea(s1, s2, keep1, keep2); |
| 403 | } |
| 404 | |
| 405 | /* |
| 406 | * Intersect a Rectangle with a Shape by the simplest method, |
| 407 | * attempting to produce a simplified result. |
| 408 | * The boolean arguments keep1 and keep2 specify whether or not |
| 409 | * the first or second shapes can be modified during the operation |
| 410 | * or whether that shape must be "kept" unmodified. |
| 411 | */ |
| 412 | Shape intersectRectShape(Rectangle2D r, Shape s, |
| 413 | boolean keep1, boolean keep2) { |
| 414 | if (s instanceof Rectangle2D) { |
| 415 | Rectangle2D r2 = (Rectangle2D) s; |
| 416 | Rectangle2D outrect; |
| 417 | if (!keep1) { |
| 418 | outrect = r; |
| 419 | } else if (!keep2) { |
| 420 | outrect = r2; |
| 421 | } else { |
| 422 | outrect = new Rectangle2D.Float(); |
| 423 | } |
| 424 | double x1 = Math.max(r.getX(), r2.getX()); |
| 425 | double x2 = Math.min(r.getX() + r.getWidth(), |
| 426 | r2.getX() + r2.getWidth()); |
| 427 | double y1 = Math.max(r.getY(), r2.getY()); |
| 428 | double y2 = Math.min(r.getY() + r.getHeight(), |
| 429 | r2.getY() + r2.getHeight()); |
| 430 | |
| 431 | if (((x2 - x1) < 0) || ((y2 - y1) < 0)) |
| 432 | // Width or height is negative. No intersection. |
| 433 | outrect.setFrameFromDiagonal(0, 0, 0, 0); |
| 434 | else |
| 435 | outrect.setFrameFromDiagonal(x1, y1, x2, y2); |
| 436 | return outrect; |
| 437 | } |
| 438 | if (r.contains(s.getBounds2D())) { |
| 439 | if (keep2) { |
| 440 | s = cloneShape(s); |
| 441 | } |
| 442 | return s; |
| 443 | } |
| 444 | return intersectByArea(r, s, keep1, keep2); |
| 445 | } |
| 446 | |
| 447 | protected static Shape cloneShape(Shape s) { |
| 448 | return new GeneralPath(s); |
| 449 | } |
| 450 | |
| 451 | /* |
| 452 | * Intersect two Shapes using the Area class. Presumably other |
| 453 | * attempts at simpler intersection methods proved fruitless. |
| 454 | * The boolean arguments keep1 and keep2 specify whether or not |
| 455 | * the first or second shapes can be modified during the operation |
| 456 | * or whether that shape must be "kept" unmodified. |
| 457 | * @see #intersectShapes |
| 458 | * @see #intersectRectShape |
| 459 | */ |
| 460 | Shape intersectByArea(Shape s1, Shape s2, boolean keep1, boolean keep2) { |
| 461 | Area a1, a2; |
| 462 | |
| 463 | // First see if we can find an overwriteable source shape |
| 464 | // to use as our destination area to avoid duplication. |
| 465 | if (!keep1 && (s1 instanceof Area)) { |
| 466 | a1 = (Area) s1; |
| 467 | } else if (!keep2 && (s2 instanceof Area)) { |
| 468 | a1 = (Area) s2; |
| 469 | s2 = s1; |
| 470 | } else { |
| 471 | a1 = new Area(s1); |
| 472 | } |
| 473 | |
| 474 | if (s2 instanceof Area) { |
| 475 | a2 = (Area) s2; |
| 476 | } else { |
| 477 | a2 = new Area(s2); |
| 478 | } |
| 479 | |
| 480 | a1.intersect(a2); |
| 481 | if (a1.isRectangular()) { |
| 482 | return a1.getBounds(); |
| 483 | } |
| 484 | |
| 485 | return a1; |
| 486 | } |
| 487 | |
| 488 | /* |
| 489 | * Intersect usrClip bounds and device bounds to determine the composite |
| 490 | * rendering boundaries. |
| 491 | */ |
| 492 | public Region getCompClip() { |
| 493 | if (!surfaceData.isValid()) { |
| 494 | // revalidateAll() implicitly recalculcates the composite clip |
| 495 | revalidateAll(); |
| 496 | } |
| 497 | |
| 498 | return clipRegion; |
| 499 | } |
| 500 | |
| 501 | public Font getFont() { |
| 502 | if (font == null) { |
| 503 | font = defaultFont; |
| 504 | } |
| 505 | return font; |
| 506 | } |
| 507 | |
| 508 | private static final double[] IDENT_MATRIX = {1, 0, 0, 1}; |
| 509 | private static final AffineTransform IDENT_ATX = |
| 510 | new AffineTransform(); |
| 511 | |
| 512 | private static final int MINALLOCATED = 8; |
| 513 | private static final int TEXTARRSIZE = 17; |
| 514 | private static double[][] textTxArr = new double[TEXTARRSIZE][]; |
| 515 | private static AffineTransform[] textAtArr = |
| 516 | new AffineTransform[TEXTARRSIZE]; |
| 517 | |
| 518 | static { |
| 519 | for (int i=MINALLOCATED;i<TEXTARRSIZE;i++) { |
| 520 | textTxArr[i] = new double [] {i, 0, 0, i}; |
| 521 | textAtArr[i] = new AffineTransform( textTxArr[i]); |
| 522 | } |
| 523 | } |
| 524 | |
| 525 | // cached state for various draw[String,Char,Byte] optimizations |
| 526 | public FontInfo checkFontInfo(FontInfo info, Font font, |
| 527 | FontRenderContext frc) { |
| 528 | /* Do not create a FontInfo object as part of construction of an |
| 529 | * SG2D as its possible it may never be needed - ie if no text |
| 530 | * is drawn using this SG2D. |
| 531 | */ |
| 532 | if (info == null) { |
| 533 | info = new FontInfo(); |
| 534 | } |
| 535 | |
| 536 | float ptSize = font.getSize2D(); |
| 537 | int txFontType; |
| 538 | AffineTransform devAt, textAt=null; |
| 539 | if (font.isTransformed()) { |
| 540 | textAt = font.getTransform(); |
| 541 | textAt.scale(ptSize, ptSize); |
| 542 | txFontType = textAt.getType(); |
| 543 | info.originX = (float)textAt.getTranslateX(); |
| 544 | info.originY = (float)textAt.getTranslateY(); |
| 545 | textAt.translate(-info.originX, -info.originY); |
| 546 | if (transformState >= TRANSFORM_TRANSLATESCALE) { |
| 547 | transform.getMatrix(info.devTx = new double[4]); |
| 548 | devAt = new AffineTransform(info.devTx); |
| 549 | textAt.preConcatenate(devAt); |
| 550 | } else { |
| 551 | info.devTx = IDENT_MATRIX; |
| 552 | devAt = IDENT_ATX; |
| 553 | } |
| 554 | textAt.getMatrix(info.glyphTx = new double[4]); |
| 555 | double shearx = textAt.getShearX(); |
| 556 | double scaley = textAt.getScaleY(); |
| 557 | if (shearx != 0) { |
| 558 | scaley = Math.sqrt(shearx * shearx + scaley * scaley); |
| 559 | } |
| 560 | info.pixelHeight = (int)(Math.abs(scaley)+0.5); |
| 561 | } else { |
| 562 | txFontType = AffineTransform.TYPE_IDENTITY; |
| 563 | info.originX = info.originY = 0; |
| 564 | if (transformState >= TRANSFORM_TRANSLATESCALE) { |
| 565 | transform.getMatrix(info.devTx = new double[4]); |
| 566 | devAt = new AffineTransform(info.devTx); |
| 567 | info.glyphTx = new double[4]; |
| 568 | for (int i = 0; i < 4; i++) { |
| 569 | info.glyphTx[i] = info.devTx[i] * ptSize; |
| 570 | } |
| 571 | textAt = new AffineTransform(info.glyphTx); |
| 572 | double shearx = transform.getShearX(); |
| 573 | double scaley = transform.getScaleY(); |
| 574 | if (shearx != 0) { |
| 575 | scaley = Math.sqrt(shearx * shearx + scaley * scaley); |
| 576 | } |
| 577 | info.pixelHeight = (int)(Math.abs(scaley * ptSize)+0.5); |
| 578 | } else { |
| 579 | /* If the double represents a common integral, we |
| 580 | * may have pre-allocated objects. |
| 581 | * A "sparse" array be seems to be as fast as a switch |
| 582 | * even for 3 or 4 pt sizes, and is more flexible. |
| 583 | * This should perform comparably in single-threaded |
| 584 | * rendering to the old code which synchronized on the |
| 585 | * class and scale better on MP systems. |
| 586 | */ |
| 587 | int pszInt = (int)ptSize; |
| 588 | if (ptSize == pszInt && |
| 589 | pszInt >= MINALLOCATED && pszInt < TEXTARRSIZE) { |
| 590 | info.glyphTx = textTxArr[pszInt]; |
| 591 | textAt = textAtArr[pszInt]; |
| 592 | info.pixelHeight = pszInt; |
| 593 | } else { |
| 594 | info.pixelHeight = (int)(ptSize+0.5); |
| 595 | } |
| 596 | if (textAt == null) { |
| 597 | info.glyphTx = new double[] {ptSize, 0, 0, ptSize}; |
| 598 | textAt = new AffineTransform(info.glyphTx); |
| 599 | } |
| 600 | |
| 601 | info.devTx = IDENT_MATRIX; |
| 602 | devAt = IDENT_ATX; |
| 603 | } |
| 604 | } |
| 605 | |
| 606 | info.font2D = FontManager.getFont2D(font); |
| 607 | |
| 608 | int fmhint = fractionalMetricsHint; |
| 609 | if (fmhint == SunHints.INTVAL_FRACTIONALMETRICS_DEFAULT) { |
| 610 | fmhint = SunHints.INTVAL_FRACTIONALMETRICS_OFF; |
| 611 | } |
| 612 | info.lcdSubPixPos = false; // conditionally set true in LCD mode. |
| 613 | |
| 614 | /* The text anti-aliasing hints that are set by the client need |
| 615 | * to be interpreted for the current state and stored in the |
| 616 | * FontInfo.aahint which is what will actually be used and |
| 617 | * will be one of OFF, ON, LCD_HRGB or LCD_VRGB. |
| 618 | * This is what pipe selection code should typically refer to, not |
| 619 | * textAntialiasHint. This means we are now evaluating the meaning |
| 620 | * of "default" here. Any pipe that really cares about that will |
| 621 | * also need to consult that variable. |
| 622 | * Otherwise these are being used only as args to getStrike, |
| 623 | * and are encapsulated in that object which is part of the |
| 624 | * FontInfo, so we do not need to store them directly as fields |
| 625 | * in the FontInfo object. |
| 626 | * That could change if FontInfo's were more selectively |
| 627 | * revalidated when graphics state changed. Presently this |
| 628 | * method re-evaluates all fields in the fontInfo. |
| 629 | * The strike doesn't need to know the RGB subpixel order. Just |
| 630 | * if its H or V orientation, so if an LCD option is specified we |
| 631 | * always pass in the RGB hint to the strike. |
| 632 | * frc is non-null only if this is a GlyphVector. For reasons |
| 633 | * which are probably a historical mistake the AA hint in a GV |
| 634 | * is honoured when we render, overriding the Graphics setting. |
| 635 | */ |
| 636 | int aahint; |
| 637 | if (frc == null) { |
| 638 | aahint = textAntialiasHint; |
| 639 | } else { |
| 640 | aahint = ((SunHints.Value)frc.getAntiAliasingHint()).getIndex(); |
| 641 | } |
| 642 | if (aahint == SunHints.INTVAL_TEXT_ANTIALIAS_DEFAULT) { |
| 643 | if (antialiasHint == SunHints.INTVAL_ANTIALIAS_ON) { |
| 644 | aahint = SunHints.INTVAL_TEXT_ANTIALIAS_ON; |
| 645 | } else { |
| 646 | aahint = SunHints.INTVAL_TEXT_ANTIALIAS_OFF; |
| 647 | } |
| 648 | } else { |
| 649 | /* If we are in checkFontInfo because a rendering hint has been |
| 650 | * set then all pipes are revalidated. But we can also |
| 651 | * be here because setFont() has been called when the 'gasp' |
| 652 | * hint is set, as then the font size determines the text pipe. |
| 653 | * See comments in SunGraphics2d.setFont(Font). |
| 654 | */ |
| 655 | if (aahint == SunHints.INTVAL_TEXT_ANTIALIAS_GASP) { |
| 656 | if (info.font2D.useAAForPtSize(info.pixelHeight)) { |
| 657 | aahint = SunHints.INTVAL_TEXT_ANTIALIAS_ON; |
| 658 | } else { |
| 659 | aahint = SunHints.INTVAL_TEXT_ANTIALIAS_OFF; |
| 660 | } |
| 661 | } else if (aahint >= SunHints.INTVAL_TEXT_ANTIALIAS_LCD_HRGB) { |
| 662 | /* loops for default rendering modes are installed in the SG2D |
| 663 | * constructor. If there are none this will be null. |
| 664 | * Not all compositing modes update the render loops, so |
| 665 | * we also test that this is a mode we know should support |
| 666 | * this. One minor issue is that the loops aren't necessarily |
| 667 | * installed for a new rendering mode until after this |
| 668 | * method is called during pipeline validation. So it is |
| 669 | * theoretically possible that it was set to null for a |
| 670 | * compositing mode, the composite is then set back to Src, |
| 671 | * but the loop is still null when this is called and AA=ON |
| 672 | * is installed instead of an LCD mode. |
| 673 | * However this is done in the right order in SurfaceData.java |
| 674 | * so this is not likely to be a problem - but not |
| 675 | * guaranteed. |
| 676 | */ |
| 677 | if ( |
| 678 | !surfaceData.canRenderLCDText(this) |
| 679 | // loops.drawGlyphListLCDLoop == null || |
| 680 | // compositeState > COMP_ISCOPY || |
| 681 | // paintState > PAINT_ALPHACOLOR |
| 682 | ) { |
| 683 | aahint = SunHints.INTVAL_TEXT_ANTIALIAS_ON; |
| 684 | } else { |
| 685 | info.lcdRGBOrder = true; |
| 686 | /* Collapse these into just HRGB or VRGB. |
| 687 | * Pipe selection code needs only to test for these two. |
| 688 | * Since these both select the same pipe anyway its |
| 689 | * tempting to collapse into one value. But they are |
| 690 | * different strikes (glyph caches) so the distinction |
| 691 | * needs to be made for that purpose. |
| 692 | */ |
| 693 | if (aahint == SunHints.INTVAL_TEXT_ANTIALIAS_LCD_HBGR) { |
| 694 | aahint = SunHints.INTVAL_TEXT_ANTIALIAS_LCD_HRGB; |
| 695 | info.lcdRGBOrder = false; |
| 696 | } else if |
| 697 | (aahint == SunHints.INTVAL_TEXT_ANTIALIAS_LCD_VBGR) { |
| 698 | aahint = SunHints.INTVAL_TEXT_ANTIALIAS_LCD_VRGB; |
| 699 | info.lcdRGBOrder = false; |
| 700 | } |
| 701 | /* Support subpixel positioning only for the case in |
| 702 | * which the horizontal resolution is increased |
| 703 | */ |
| 704 | info.lcdSubPixPos = |
| 705 | fmhint == SunHints.INTVAL_FRACTIONALMETRICS_ON && |
| 706 | aahint == SunHints.INTVAL_TEXT_ANTIALIAS_LCD_HRGB; |
| 707 | } |
| 708 | } |
| 709 | } |
| 710 | info.aaHint = aahint; |
| 711 | info.fontStrike = info.font2D.getStrike(font, devAt, textAt, |
| 712 | aahint, fmhint); |
| 713 | return info; |
| 714 | } |
| 715 | |
| 716 | public static boolean isRotated(double [] mtx) { |
| 717 | if ((mtx[0] == mtx[3]) && |
| 718 | (mtx[1] == 0.0) && |
| 719 | (mtx[2] == 0.0) && |
| 720 | (mtx[0] > 0.0)) |
| 721 | { |
| 722 | return false; |
| 723 | } |
| 724 | |
| 725 | return true; |
| 726 | } |
| 727 | |
| 728 | public void setFont(Font font) { |
| 729 | /* replacing the reference equality test font != this.font with |
| 730 | * !font.equals(this.font) did not yield any measurable difference |
| 731 | * in testing, but there may be yet to be identified cases where it |
| 732 | * is beneficial. |
| 733 | */ |
| 734 | if (font != null && font!=this.font/*!font.equals(this.font)*/) { |
| 735 | /* In the GASP AA case the textpipe depends on the glyph size |
| 736 | * as determined by graphics and font transforms as well as the |
| 737 | * font size, and information in the font. But we may invalidate |
| 738 | * the pipe only to find that it made no difference. |
| 739 | * Deferring pipe invalidation to checkFontInfo won't work because |
| 740 | * when called we may already be rendering to the wrong pipe. |
| 741 | * So, if the font is transformed, or the graphics has more than |
| 742 | * a simple scale, we'll take that as enough of a hint to |
| 743 | * revalidate everything. But if they aren't we will |
| 744 | * use the font's point size to query the gasp table and see if |
| 745 | * what it says matches what's currently being used, in which |
| 746 | * case there's no need to invalidate the textpipe. |
| 747 | * This should be sufficient for all typical uses cases. |
| 748 | */ |
| 749 | if (textAntialiasHint == SunHints.INTVAL_TEXT_ANTIALIAS_GASP && |
| 750 | textpipe != invalidpipe && |
| 751 | (transformState > TRANSFORM_ANY_TRANSLATE || |
| 752 | font.isTransformed() || |
| 753 | fontInfo == null || // Precaution, if true shouldn't get here |
| 754 | (fontInfo.aaHint == SunHints.INTVAL_TEXT_ANTIALIAS_ON) != |
| 755 | FontManager.getFont2D(font).useAAForPtSize(font.getSize()))) { |
| 756 | textpipe = invalidpipe; |
| 757 | } |
| 758 | this.font = font; |
| 759 | this.fontMetrics = null; |
| 760 | this.validFontInfo = false; |
| 761 | } |
| 762 | } |
| 763 | |
| 764 | public FontInfo getFontInfo() { |
| 765 | if (!validFontInfo) { |
| 766 | this.fontInfo = checkFontInfo(this.fontInfo, font, null); |
| 767 | validFontInfo = true; |
| 768 | } |
| 769 | return this.fontInfo; |
| 770 | } |
| 771 | |
| 772 | /* Used by drawGlyphVector which specifies its own font. */ |
| 773 | public FontInfo getGVFontInfo(Font font, FontRenderContext frc) { |
| 774 | if (glyphVectorFontInfo != null && |
| 775 | glyphVectorFontInfo.font == font && |
| 776 | glyphVectorFRC == frc) { |
| 777 | return glyphVectorFontInfo; |
| 778 | } else { |
| 779 | glyphVectorFRC = frc; |
| 780 | return glyphVectorFontInfo = |
| 781 | checkFontInfo(glyphVectorFontInfo, font, frc); |
| 782 | } |
| 783 | } |
| 784 | |
| 785 | public FontMetrics getFontMetrics() { |
| 786 | if (this.fontMetrics != null) { |
| 787 | return this.fontMetrics; |
| 788 | } |
| 789 | /* NB the constructor and the setter disallow "font" being null */ |
| 790 | return this.fontMetrics = |
| 791 | FontDesignMetrics.getMetrics(font, getFontRenderContext()); |
| 792 | } |
| 793 | |
| 794 | public FontMetrics getFontMetrics(Font font) { |
| 795 | if ((this.fontMetrics != null) && (font == this.font)) { |
| 796 | return this.fontMetrics; |
| 797 | } |
| 798 | FontMetrics fm = |
| 799 | FontDesignMetrics.getMetrics(font, getFontRenderContext()); |
| 800 | |
| 801 | if (this.font == font) { |
| 802 | this.fontMetrics = fm; |
| 803 | } |
| 804 | return fm; |
| 805 | } |
| 806 | |
| 807 | /** |
| 808 | * Checks to see if a Path intersects the specified Rectangle in device |
| 809 | * space. The rendering attributes taken into account include the |
| 810 | * clip, transform, and stroke attributes. |
| 811 | * @param rect The area in device space to check for a hit. |
| 812 | * @param p The path to check for a hit. |
| 813 | * @param onStroke Flag to choose between testing the stroked or |
| 814 | * the filled path. |
| 815 | * @return True if there is a hit, false otherwise. |
| 816 | * @see #setStroke |
| 817 | * @see #fillPath |
| 818 | * @see #drawPath |
| 819 | * @see #transform |
| 820 | * @see #setTransform |
| 821 | * @see #clip |
| 822 | * @see #setClip |
| 823 | */ |
| 824 | public boolean hit(Rectangle rect, Shape s, boolean onStroke) { |
| 825 | if (onStroke) { |
| 826 | s = stroke.createStrokedShape(s); |
| 827 | } |
| 828 | |
| 829 | s = transformShape(s); |
| 830 | if ((constrainX|constrainY) != 0) { |
| 831 | rect = new Rectangle(rect); |
| 832 | rect.translate(constrainX, constrainY); |
| 833 | } |
| 834 | |
| 835 | return s.intersects(rect); |
| 836 | } |
| 837 | |
| 838 | /** |
| 839 | * Return the ColorModel associated with this Graphics2D. |
| 840 | */ |
| 841 | public ColorModel getDeviceColorModel() { |
| 842 | return surfaceData.getColorModel(); |
| 843 | } |
| 844 | |
| 845 | /** |
| 846 | * Return the device configuration associated with this Graphics2D. |
| 847 | */ |
| 848 | public GraphicsConfiguration getDeviceConfiguration() { |
| 849 | return surfaceData.getDeviceConfiguration(); |
| 850 | } |
| 851 | |
| 852 | /** |
| 853 | * Return the SurfaceData object assigned to manage the destination |
| 854 | * drawable surface of this Graphics2D. |
| 855 | */ |
| 856 | public final SurfaceData getSurfaceData() { |
| 857 | return surfaceData; |
| 858 | } |
| 859 | |
| 860 | /** |
| 861 | * Sets the Composite in the current graphics state. Composite is used |
| 862 | * in all drawing methods such as drawImage, drawString, drawPath, |
| 863 | * and fillPath. It specifies how new pixels are to be combined with |
| 864 | * the existing pixels on the graphics device in the rendering process. |
| 865 | * @param comp The Composite object to be used for drawing. |
| 866 | * @see java.awt.Graphics#setXORMode |
| 867 | * @see java.awt.Graphics#setPaintMode |
| 868 | * @see AlphaComposite |
| 869 | */ |
| 870 | public void setComposite(Composite comp) { |
| 871 | if (composite == comp) { |
| 872 | return; |
| 873 | } |
| 874 | int newCompState; |
| 875 | CompositeType newCompType; |
| 876 | if (comp instanceof AlphaComposite) { |
| 877 | AlphaComposite alphacomp = (AlphaComposite) comp; |
| 878 | newCompType = CompositeType.forAlphaComposite(alphacomp); |
| 879 | if (newCompType == CompositeType.SrcOverNoEa) { |
| 880 | if (paintState == PAINT_OPAQUECOLOR || |
| 881 | (paintState > PAINT_ALPHACOLOR && |
| 882 | paint.getTransparency() == Transparency.OPAQUE)) |
| 883 | { |
| 884 | newCompState = COMP_ISCOPY; |
| 885 | } else { |
| 886 | newCompState = COMP_ALPHA; |
| 887 | } |
| 888 | } else if (newCompType == CompositeType.SrcNoEa || |
| 889 | newCompType == CompositeType.Src || |
| 890 | newCompType == CompositeType.Clear) |
| 891 | { |
| 892 | newCompState = COMP_ISCOPY; |
| 893 | } else if (surfaceData.getTransparency() == Transparency.OPAQUE && |
| 894 | newCompType == CompositeType.SrcIn) |
| 895 | { |
| 896 | newCompState = COMP_ISCOPY; |
| 897 | } else { |
| 898 | newCompState = COMP_ALPHA; |
| 899 | } |
| 900 | } else if (comp instanceof XORComposite) { |
| 901 | newCompState = COMP_XOR; |
| 902 | newCompType = CompositeType.Xor; |
| 903 | } else if (comp == null) { |
| 904 | throw new IllegalArgumentException("null Composite"); |
| 905 | } else { |
| 906 | surfaceData.checkCustomComposite(); |
| 907 | newCompState = COMP_CUSTOM; |
| 908 | newCompType = CompositeType.General; |
| 909 | } |
| 910 | if (compositeState != newCompState || |
| 911 | imageComp != newCompType) |
| 912 | { |
| 913 | compositeState = newCompState; |
| 914 | imageComp = newCompType; |
| 915 | invalidatePipe(); |
| 916 | validFontInfo = false; |
| 917 | } |
| 918 | composite = comp; |
| 919 | if (paintState <= PAINT_ALPHACOLOR) { |
| 920 | validateColor(); |
| 921 | } |
| 922 | } |
| 923 | |
| 924 | /** |
| 925 | * Sets the Paint in the current graphics state. |
| 926 | * @param paint The Paint object to be used to generate color in |
| 927 | * the rendering process. |
| 928 | * @see java.awt.Graphics#setColor |
| 929 | * @see GradientPaint |
| 930 | * @see TexturePaint |
| 931 | */ |
| 932 | public void setPaint(Paint paint) { |
| 933 | if (paint instanceof Color) { |
| 934 | setColor((Color) paint); |
| 935 | return; |
| 936 | } |
| 937 | if (paint == null || this.paint == paint) { |
| 938 | return; |
| 939 | } |
| 940 | this.paint = paint; |
| 941 | if (imageComp == CompositeType.SrcOverNoEa) { |
| 942 | // special case where compState depends on opacity of paint |
| 943 | if (paint.getTransparency() == Transparency.OPAQUE) { |
| 944 | if (compositeState != COMP_ISCOPY) { |
| 945 | compositeState = COMP_ISCOPY; |
| 946 | } |
| 947 | } else { |
| 948 | if (compositeState == COMP_ISCOPY) { |
| 949 | compositeState = COMP_ALPHA; |
| 950 | } |
| 951 | } |
| 952 | } |
| 953 | Class paintClass = paint.getClass(); |
| 954 | if (paintClass == GradientPaint.class) { |
| 955 | paintState = PAINT_GRADIENT; |
| 956 | } else if (paintClass == LinearGradientPaint.class) { |
| 957 | paintState = PAINT_LIN_GRADIENT; |
| 958 | } else if (paintClass == RadialGradientPaint.class) { |
| 959 | paintState = PAINT_RAD_GRADIENT; |
| 960 | } else if (paintClass == TexturePaint.class) { |
| 961 | paintState = PAINT_TEXTURE; |
| 962 | } else { |
| 963 | paintState = PAINT_CUSTOM; |
| 964 | } |
| 965 | validFontInfo = false; |
| 966 | invalidatePipe(); |
| 967 | } |
| 968 | |
| 969 | static final int NON_UNIFORM_SCALE_MASK = |
| 970 | (AffineTransform.TYPE_GENERAL_TRANSFORM | |
| 971 | AffineTransform.TYPE_GENERAL_SCALE); |
| 972 | public static final double MinPenSizeAA = |
| 973 | sun.java2d.pipe.RenderingEngine.getInstance().getMinimumAAPenSize(); |
| 974 | public static final double MinPenSizeAASquared = |
| 975 | (MinPenSizeAA * MinPenSizeAA); |
| 976 | // Since inaccuracies in the trig package can cause us to |
| 977 | // calculated a rotated pen width of just slightly greater |
| 978 | // than 1.0, we add a fudge factor to our comparison value |
| 979 | // here so that we do not misclassify single width lines as |
| 980 | // wide lines under certain rotations. |
| 981 | public static final double MinPenSizeSquared = 1.000000001; |
| 982 | |
| 983 | private void validateBasicStroke(BasicStroke bs) { |
| 984 | boolean aa = (antialiasHint == SunHints.INTVAL_ANTIALIAS_ON); |
| 985 | if (transformState < TRANSFORM_TRANSLATESCALE) { |
| 986 | if (aa) { |
| 987 | if (bs.getLineWidth() <= MinPenSizeAA) { |
| 988 | if (bs.getDashArray() == null) { |
| 989 | strokeState = STROKE_THIN; |
| 990 | } else { |
| 991 | strokeState = STROKE_THINDASHED; |
| 992 | } |
| 993 | } else { |
| 994 | strokeState = STROKE_WIDE; |
| 995 | } |
| 996 | } else { |
| 997 | if (bs == defaultStroke) { |
| 998 | strokeState = STROKE_THIN; |
| 999 | } else if (bs.getLineWidth() <= 1.0f) { |
| 1000 | if (bs.getDashArray() == null) { |
| 1001 | strokeState = STROKE_THIN; |
| 1002 | } else { |
| 1003 | strokeState = STROKE_THINDASHED; |
| 1004 | } |
| 1005 | } else { |
| 1006 | strokeState = STROKE_WIDE; |
| 1007 | } |
| 1008 | } |
| 1009 | } else { |
| 1010 | double widthsquared; |
| 1011 | if ((transform.getType() & NON_UNIFORM_SCALE_MASK) == 0) { |
| 1012 | /* sqrt omitted, compare to squared limits below. */ |
| 1013 | widthsquared = Math.abs(transform.getDeterminant()); |
| 1014 | } else { |
| 1015 | /* First calculate the "maximum scale" of this transform. */ |
| 1016 | double A = transform.getScaleX(); // m00 |
| 1017 | double C = transform.getShearX(); // m01 |
| 1018 | double B = transform.getShearY(); // m10 |
| 1019 | double D = transform.getScaleY(); // m11 |
| 1020 | |
| 1021 | /* |
| 1022 | * Given a 2 x 2 affine matrix [ A B ] such that |
| 1023 | * [ C D ] |
| 1024 | * v' = [x' y'] = [Ax + Cy, Bx + Dy], we want to |
| 1025 | * find the maximum magnitude (norm) of the vector v' |
| 1026 | * with the constraint (x^2 + y^2 = 1). |
| 1027 | * The equation to maximize is |
| 1028 | * |v'| = sqrt((Ax+Cy)^2+(Bx+Dy)^2) |
| 1029 | * or |v'| = sqrt((AA+BB)x^2 + 2(AC+BD)xy + (CC+DD)y^2). |
| 1030 | * Since sqrt is monotonic we can maximize |v'|^2 |
| 1031 | * instead and plug in the substitution y = sqrt(1 - x^2). |
| 1032 | * Trigonometric equalities can then be used to get |
| 1033 | * rid of most of the sqrt terms. |
| 1034 | */ |
| 1035 | double EA = A*A + B*B; // x^2 coefficient |
| 1036 | double EB = 2*(A*C + B*D); // xy coefficient |
| 1037 | double EC = C*C + D*D; // y^2 coefficient |
| 1038 | |
| 1039 | /* |
| 1040 | * There is a lot of calculus omitted here. |
| 1041 | * |
| 1042 | * Conceptually, in the interests of understanding the |
| 1043 | * terms that the calculus produced we can consider |
| 1044 | * that EA and EC end up providing the lengths along |
| 1045 | * the major axes and the hypot term ends up being an |
| 1046 | * adjustment for the additional length along the off-axis |
| 1047 | * angle of rotated or sheared ellipses as well as an |
| 1048 | * adjustment for the fact that the equation below |
| 1049 | * averages the two major axis lengths. (Notice that |
| 1050 | * the hypot term contains a part which resolves to the |
| 1051 | * difference of these two axis lengths in the absence |
| 1052 | * of rotation.) |
| 1053 | * |
| 1054 | * In the calculus, the ratio of the EB and (EA-EC) terms |
| 1055 | * ends up being the tangent of 2*theta where theta is |
| 1056 | * the angle that the long axis of the ellipse makes |
| 1057 | * with the horizontal axis. Thus, this equation is |
| 1058 | * calculating the length of the hypotenuse of a triangle |
| 1059 | * along that axis. |
| 1060 | */ |
| 1061 | double hypot = Math.sqrt(EB*EB + (EA-EC)*(EA-EC)); |
| 1062 | |
| 1063 | /* sqrt omitted, compare to squared limits below. */ |
| 1064 | widthsquared = ((EA + EC + hypot)/2.0); |
| 1065 | } |
| 1066 | if (bs != defaultStroke) { |
| 1067 | widthsquared *= bs.getLineWidth() * bs.getLineWidth(); |
| 1068 | } |
| 1069 | if (widthsquared <= |
| 1070 | (aa ? MinPenSizeAASquared : MinPenSizeSquared)) |
| 1071 | { |
| 1072 | if (bs.getDashArray() == null) { |
| 1073 | strokeState = STROKE_THIN; |
| 1074 | } else { |
| 1075 | strokeState = STROKE_THINDASHED; |
| 1076 | } |
| 1077 | } else { |
| 1078 | strokeState = STROKE_WIDE; |
| 1079 | } |
| 1080 | } |
| 1081 | } |
| 1082 | |
| 1083 | /* |
| 1084 | * Sets the Stroke in the current graphics state. |
| 1085 | * @param s The Stroke object to be used to stroke a Path in |
| 1086 | * the rendering process. |
| 1087 | * @see BasicStroke |
| 1088 | */ |
| 1089 | public void setStroke(Stroke s) { |
| 1090 | if (s == null) { |
| 1091 | throw new IllegalArgumentException("null Stroke"); |
| 1092 | } |
| 1093 | int saveStrokeState = strokeState; |
| 1094 | stroke = s; |
| 1095 | if (s instanceof BasicStroke) { |
| 1096 | validateBasicStroke((BasicStroke) s); |
| 1097 | } else { |
| 1098 | strokeState = STROKE_CUSTOM; |
| 1099 | } |
| 1100 | if (strokeState != saveStrokeState) { |
| 1101 | invalidatePipe(); |
| 1102 | } |
| 1103 | } |
| 1104 | |
| 1105 | /** |
| 1106 | * Sets the preferences for the rendering algorithms. |
| 1107 | * Hint categories include controls for rendering quality and |
| 1108 | * overall time/quality trade-off in the rendering process. |
| 1109 | * @param hintKey The key of hint to be set. The strings are |
| 1110 | * defined in the RenderingHints class. |
| 1111 | * @param hintValue The value indicating preferences for the specified |
| 1112 | * hint category. These strings are defined in the RenderingHints |
| 1113 | * class. |
| 1114 | * @see RenderingHints |
| 1115 | */ |
| 1116 | public void setRenderingHint(Key hintKey, Object hintValue) { |
| 1117 | // If we recognize the key, we must recognize the value |
| 1118 | // otherwise throw an IllegalArgumentException |
| 1119 | // and do not change the Hints object |
| 1120 | // If we do not recognize the key, just pass it through |
| 1121 | // to the Hints object untouched |
| 1122 | if (!hintKey.isCompatibleValue(hintValue)) { |
| 1123 | throw new IllegalArgumentException |
| 1124 | (hintValue+" is not compatible with "+hintKey); |
| 1125 | } |
| 1126 | if (hintKey instanceof SunHints.Key) { |
| 1127 | boolean stateChanged; |
| 1128 | boolean textStateChanged = false; |
| 1129 | boolean recognized = true; |
| 1130 | SunHints.Key sunKey = (SunHints.Key) hintKey; |
| 1131 | int newHint; |
| 1132 | if (sunKey == SunHints.KEY_TEXT_ANTIALIAS_LCD_CONTRAST) { |
| 1133 | newHint = ((Integer)hintValue).intValue(); |
| 1134 | } else { |
| 1135 | newHint = ((SunHints.Value) hintValue).getIndex(); |
| 1136 | } |
| 1137 | switch (sunKey.getIndex()) { |
| 1138 | case SunHints.INTKEY_RENDERING: |
| 1139 | stateChanged = (renderHint != newHint); |
| 1140 | if (stateChanged) { |
| 1141 | renderHint = newHint; |
| 1142 | if (interpolationHint == -1) { |
| 1143 | interpolationType = |
| 1144 | (newHint == SunHints.INTVAL_RENDER_QUALITY |
| 1145 | ? AffineTransformOp.TYPE_BILINEAR |
| 1146 | : AffineTransformOp.TYPE_NEAREST_NEIGHBOR); |
| 1147 | } |
| 1148 | } |
| 1149 | break; |
| 1150 | case SunHints.INTKEY_ANTIALIASING: |
| 1151 | stateChanged = (antialiasHint != newHint); |
| 1152 | antialiasHint = newHint; |
| 1153 | if (stateChanged) { |
| 1154 | textStateChanged = |
| 1155 | (textAntialiasHint == |
| 1156 | SunHints.INTVAL_TEXT_ANTIALIAS_DEFAULT); |
| 1157 | if (strokeState != STROKE_CUSTOM) { |
| 1158 | validateBasicStroke((BasicStroke) stroke); |
| 1159 | } |
| 1160 | } |
| 1161 | break; |
| 1162 | case SunHints.INTKEY_TEXT_ANTIALIASING: |
| 1163 | stateChanged = (textAntialiasHint != newHint); |
| 1164 | textStateChanged = stateChanged; |
| 1165 | textAntialiasHint = newHint; |
| 1166 | break; |
| 1167 | case SunHints.INTKEY_FRACTIONALMETRICS: |
| 1168 | stateChanged = (fractionalMetricsHint != newHint); |
| 1169 | textStateChanged = stateChanged; |
| 1170 | fractionalMetricsHint = newHint; |
| 1171 | break; |
| 1172 | case SunHints.INTKEY_AATEXT_LCD_CONTRAST: |
| 1173 | stateChanged = false; |
| 1174 | /* Already have validated it is an int 100 <= newHint <= 250 */ |
| 1175 | lcdTextContrast = newHint; |
| 1176 | break; |
| 1177 | case SunHints.INTKEY_INTERPOLATION: |
| 1178 | interpolationHint = newHint; |
| 1179 | switch (newHint) { |
| 1180 | case SunHints.INTVAL_INTERPOLATION_BICUBIC: |
| 1181 | newHint = AffineTransformOp.TYPE_BICUBIC; |
| 1182 | break; |
| 1183 | case SunHints.INTVAL_INTERPOLATION_BILINEAR: |
| 1184 | newHint = AffineTransformOp.TYPE_BILINEAR; |
| 1185 | break; |
| 1186 | default: |
| 1187 | case SunHints.INTVAL_INTERPOLATION_NEAREST_NEIGHBOR: |
| 1188 | newHint = AffineTransformOp.TYPE_NEAREST_NEIGHBOR; |
| 1189 | break; |
| 1190 | } |
| 1191 | stateChanged = (interpolationType != newHint); |
| 1192 | interpolationType = newHint; |
| 1193 | break; |
| 1194 | case SunHints.INTKEY_STROKE_CONTROL: |
| 1195 | stateChanged = (strokeHint != newHint); |
| 1196 | strokeHint = newHint; |
| 1197 | break; |
| 1198 | default: |
| 1199 | recognized = false; |
| 1200 | stateChanged = false; |
| 1201 | break; |
| 1202 | } |
| 1203 | if (recognized) { |
| 1204 | if (stateChanged) { |
| 1205 | invalidatePipe(); |
| 1206 | if (textStateChanged) { |
| 1207 | fontMetrics = null; |
| 1208 | this.cachedFRC = null; |
| 1209 | validFontInfo = false; |
| 1210 | this.glyphVectorFontInfo = null; |
| 1211 | } |
| 1212 | } |
| 1213 | if (hints != null) { |
| 1214 | hints.put(hintKey, hintValue); |
| 1215 | } |
| 1216 | return; |
| 1217 | } |
| 1218 | } |
| 1219 | // Nothing we recognize so none of "our state" has changed |
| 1220 | if (hints == null) { |
| 1221 | hints = makeHints(null); |
| 1222 | } |
| 1223 | hints.put(hintKey, hintValue); |
| 1224 | } |
| 1225 | |
| 1226 | |
| 1227 | /** |
| 1228 | * Returns the preferences for the rendering algorithms. |
| 1229 | * @param hintCategory The category of hint to be set. The strings |
| 1230 | * are defined in the RenderingHints class. |
| 1231 | * @return The preferences for rendering algorithms. The strings |
| 1232 | * are defined in the RenderingHints class. |
| 1233 | * @see RenderingHints |
| 1234 | */ |
| 1235 | public Object getRenderingHint(Key hintKey) { |
| 1236 | if (hints != null) { |
| 1237 | return hints.get(hintKey); |
| 1238 | } |
| 1239 | if (!(hintKey instanceof SunHints.Key)) { |
| 1240 | return null; |
| 1241 | } |
| 1242 | int keyindex = ((SunHints.Key)hintKey).getIndex(); |
| 1243 | switch (keyindex) { |
| 1244 | case SunHints.INTKEY_RENDERING: |
| 1245 | return SunHints.Value.get(SunHints.INTKEY_RENDERING, |
| 1246 | renderHint); |
| 1247 | case SunHints.INTKEY_ANTIALIASING: |
| 1248 | return SunHints.Value.get(SunHints.INTKEY_ANTIALIASING, |
| 1249 | antialiasHint); |
| 1250 | case SunHints.INTKEY_TEXT_ANTIALIASING: |
| 1251 | return SunHints.Value.get(SunHints.INTKEY_TEXT_ANTIALIASING, |
| 1252 | textAntialiasHint); |
| 1253 | case SunHints.INTKEY_FRACTIONALMETRICS: |
| 1254 | return SunHints.Value.get(SunHints.INTKEY_FRACTIONALMETRICS, |
| 1255 | fractionalMetricsHint); |
| 1256 | case SunHints.INTKEY_AATEXT_LCD_CONTRAST: |
| 1257 | return new Integer(lcdTextContrast); |
| 1258 | case SunHints.INTKEY_INTERPOLATION: |
| 1259 | switch (interpolationHint) { |
| 1260 | case SunHints.INTVAL_INTERPOLATION_NEAREST_NEIGHBOR: |
| 1261 | return SunHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR; |
| 1262 | case SunHints.INTVAL_INTERPOLATION_BILINEAR: |
| 1263 | return SunHints.VALUE_INTERPOLATION_BILINEAR; |
| 1264 | case SunHints.INTVAL_INTERPOLATION_BICUBIC: |
| 1265 | return SunHints.VALUE_INTERPOLATION_BICUBIC; |
| 1266 | } |
| 1267 | return null; |
| 1268 | case SunHints.INTKEY_STROKE_CONTROL: |
| 1269 | return SunHints.Value.get(SunHints.INTKEY_STROKE_CONTROL, |
| 1270 | strokeHint); |
| 1271 | } |
| 1272 | return null; |
| 1273 | } |
| 1274 | |
| 1275 | /** |
| 1276 | * Sets the preferences for the rendering algorithms. |
| 1277 | * Hint categories include controls for rendering quality and |
| 1278 | * overall time/quality trade-off in the rendering process. |
| 1279 | * @param hints The rendering hints to be set |
| 1280 | * @see RenderingHints |
| 1281 | */ |
| 1282 | public void setRenderingHints(Map<?,?> hints) { |
| 1283 | this.hints = null; |
| 1284 | renderHint = SunHints.INTVAL_RENDER_DEFAULT; |
| 1285 | antialiasHint = SunHints.INTVAL_ANTIALIAS_OFF; |
| 1286 | textAntialiasHint = SunHints.INTVAL_TEXT_ANTIALIAS_DEFAULT; |
| 1287 | fractionalMetricsHint = SunHints.INTVAL_FRACTIONALMETRICS_OFF; |
| 1288 | lcdTextContrast = lcdTextContrastDefaultValue; |
| 1289 | interpolationHint = -1; |
| 1290 | interpolationType = AffineTransformOp.TYPE_NEAREST_NEIGHBOR; |
| 1291 | boolean customHintPresent = false; |
| 1292 | Iterator iter = hints.keySet().iterator(); |
| 1293 | while (iter.hasNext()) { |
| 1294 | Object key = iter.next(); |
| 1295 | if (key == SunHints.KEY_RENDERING || |
| 1296 | key == SunHints.KEY_ANTIALIASING || |
| 1297 | key == SunHints.KEY_TEXT_ANTIALIASING || |
| 1298 | key == SunHints.KEY_FRACTIONALMETRICS || |
| 1299 | key == SunHints.KEY_TEXT_ANTIALIAS_LCD_CONTRAST || |
| 1300 | key == SunHints.KEY_STROKE_CONTROL || |
| 1301 | key == SunHints.KEY_INTERPOLATION) |
| 1302 | { |
| 1303 | setRenderingHint((Key) key, hints.get(key)); |
| 1304 | } else { |
| 1305 | customHintPresent = true; |
| 1306 | } |
| 1307 | } |
| 1308 | if (customHintPresent) { |
| 1309 | this.hints = makeHints(hints); |
| 1310 | } |
| 1311 | invalidatePipe(); |
| 1312 | } |
| 1313 | |
| 1314 | /** |
| 1315 | * Adds a number of preferences for the rendering algorithms. |
| 1316 | * Hint categories include controls for rendering quality and |
| 1317 | * overall time/quality trade-off in the rendering process. |
| 1318 | * @param hints The rendering hints to be set |
| 1319 | * @see RenderingHints |
| 1320 | */ |
| 1321 | public void addRenderingHints(Map<?,?> hints) { |
| 1322 | boolean customHintPresent = false; |
| 1323 | Iterator iter = hints.keySet().iterator(); |
| 1324 | while (iter.hasNext()) { |
| 1325 | Object key = iter.next(); |
| 1326 | if (key == SunHints.KEY_RENDERING || |
| 1327 | key == SunHints.KEY_ANTIALIASING || |
| 1328 | key == SunHints.KEY_TEXT_ANTIALIASING || |
| 1329 | key == SunHints.KEY_FRACTIONALMETRICS || |
| 1330 | key == SunHints.KEY_TEXT_ANTIALIAS_LCD_CONTRAST || |
| 1331 | key == SunHints.KEY_STROKE_CONTROL || |
| 1332 | key == SunHints.KEY_INTERPOLATION) |
| 1333 | { |
| 1334 | setRenderingHint((Key) key, hints.get(key)); |
| 1335 | } else { |
| 1336 | customHintPresent = true; |
| 1337 | } |
| 1338 | } |
| 1339 | if (customHintPresent) { |
| 1340 | if (this.hints == null) { |
| 1341 | this.hints = makeHints(hints); |
| 1342 | } else { |
| 1343 | this.hints.putAll(hints); |
| 1344 | } |
| 1345 | } |
| 1346 | } |
| 1347 | |
| 1348 | /** |
| 1349 | * Gets the preferences for the rendering algorithms. |
| 1350 | * Hint categories include controls for rendering quality and |
| 1351 | * overall time/quality trade-off in the rendering process. |
| 1352 | * @see RenderingHints |
| 1353 | */ |
| 1354 | public RenderingHints getRenderingHints() { |
| 1355 | if (hints == null) { |
| 1356 | return makeHints(null); |
| 1357 | } else { |
| 1358 | return (RenderingHints) hints.clone(); |
| 1359 | } |
| 1360 | } |
| 1361 | |
| 1362 | RenderingHints makeHints(Map hints) { |
| 1363 | RenderingHints model = new RenderingHints(hints); |
| 1364 | model.put(SunHints.KEY_RENDERING, |
| 1365 | SunHints.Value.get(SunHints.INTKEY_RENDERING, |
| 1366 | renderHint)); |
| 1367 | model.put(SunHints.KEY_ANTIALIASING, |
| 1368 | SunHints.Value.get(SunHints.INTKEY_ANTIALIASING, |
| 1369 | antialiasHint)); |
| 1370 | model.put(SunHints.KEY_TEXT_ANTIALIASING, |
| 1371 | SunHints.Value.get(SunHints.INTKEY_TEXT_ANTIALIASING, |
| 1372 | textAntialiasHint)); |
| 1373 | model.put(SunHints.KEY_FRACTIONALMETRICS, |
| 1374 | SunHints.Value.get(SunHints.INTKEY_FRACTIONALMETRICS, |
| 1375 | fractionalMetricsHint)); |
| 1376 | model.put(SunHints.KEY_TEXT_ANTIALIAS_LCD_CONTRAST, |
| 1377 | new Integer(lcdTextContrast)); |
| 1378 | Object value; |
| 1379 | switch (interpolationHint) { |
| 1380 | case SunHints.INTVAL_INTERPOLATION_NEAREST_NEIGHBOR: |
| 1381 | value = SunHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR; |
| 1382 | break; |
| 1383 | case SunHints.INTVAL_INTERPOLATION_BILINEAR: |
| 1384 | value = SunHints.VALUE_INTERPOLATION_BILINEAR; |
| 1385 | break; |
| 1386 | case SunHints.INTVAL_INTERPOLATION_BICUBIC: |
| 1387 | value = SunHints.VALUE_INTERPOLATION_BICUBIC; |
| 1388 | break; |
| 1389 | default: |
| 1390 | value = null; |
| 1391 | break; |
| 1392 | } |
| 1393 | if (value != null) { |
| 1394 | model.put(SunHints.KEY_INTERPOLATION, value); |
| 1395 | } |
| 1396 | model.put(SunHints.KEY_STROKE_CONTROL, |
| 1397 | SunHints.Value.get(SunHints.INTKEY_STROKE_CONTROL, |
| 1398 | strokeHint)); |
| 1399 | return model; |
| 1400 | } |
| 1401 | |
| 1402 | /** |
| 1403 | * Concatenates the current transform of this Graphics2D with a |
| 1404 | * translation transformation. |
| 1405 | * This is equivalent to calling transform(T), where T is an |
| 1406 | * AffineTransform represented by the following matrix: |
| 1407 | * <pre> |
| 1408 | * [ 1 0 tx ] |
| 1409 | * [ 0 1 ty ] |
| 1410 | * [ 0 0 1 ] |
| 1411 | * </pre> |
| 1412 | */ |
| 1413 | public void translate(double tx, double ty) { |
| 1414 | transform.translate(tx, ty); |
| 1415 | invalidateTransform(); |
| 1416 | } |
| 1417 | |
| 1418 | /** |
| 1419 | * Concatenates the current transform of this Graphics2D with a |
| 1420 | * rotation transformation. |
| 1421 | * This is equivalent to calling transform(R), where R is an |
| 1422 | * AffineTransform represented by the following matrix: |
| 1423 | * <pre> |
| 1424 | * [ cos(theta) -sin(theta) 0 ] |
| 1425 | * [ sin(theta) cos(theta) 0 ] |
| 1426 | * [ 0 0 1 ] |
| 1427 | * </pre> |
| 1428 | * Rotating with a positive angle theta rotates points on the positive |
| 1429 | * x axis toward the positive y axis. |
| 1430 | * @param theta The angle of rotation in radians. |
| 1431 | */ |
| 1432 | public void rotate(double theta) { |
| 1433 | transform.rotate(theta); |
| 1434 | invalidateTransform(); |
| 1435 | } |
| 1436 | |
| 1437 | /** |
| 1438 | * Concatenates the current transform of this Graphics2D with a |
| 1439 | * translated rotation transformation. |
| 1440 | * This is equivalent to the following sequence of calls: |
| 1441 | * <pre> |
| 1442 | * translate(x, y); |
| 1443 | * rotate(theta); |
| 1444 | * translate(-x, -y); |
| 1445 | * </pre> |
| 1446 | * Rotating with a positive angle theta rotates points on the positive |
| 1447 | * x axis toward the positive y axis. |
| 1448 | * @param theta The angle of rotation in radians. |
| 1449 | * @param x The x coordinate of the origin of the rotation |
| 1450 | * @param y The x coordinate of the origin of the rotation |
| 1451 | */ |
| 1452 | public void rotate(double theta, double x, double y) { |
| 1453 | transform.rotate(theta, x, y); |
| 1454 | invalidateTransform(); |
| 1455 | } |
| 1456 | |
| 1457 | /** |
| 1458 | * Concatenates the current transform of this Graphics2D with a |
| 1459 | * scaling transformation. |
| 1460 | * This is equivalent to calling transform(S), where S is an |
| 1461 | * AffineTransform represented by the following matrix: |
| 1462 | * <pre> |
| 1463 | * [ sx 0 0 ] |
| 1464 | * [ 0 sy 0 ] |
| 1465 | * [ 0 0 1 ] |
| 1466 | * </pre> |
| 1467 | */ |
| 1468 | public void scale(double sx, double sy) { |
| 1469 | transform.scale(sx, sy); |
| 1470 | invalidateTransform(); |
| 1471 | } |
| 1472 | |
| 1473 | /** |
| 1474 | * Concatenates the current transform of this Graphics2D with a |
| 1475 | * shearing transformation. |
| 1476 | * This is equivalent to calling transform(SH), where SH is an |
| 1477 | * AffineTransform represented by the following matrix: |
| 1478 | * <pre> |
| 1479 | * [ 1 shx 0 ] |
| 1480 | * [ shy 1 0 ] |
| 1481 | * [ 0 0 1 ] |
| 1482 | * </pre> |
| 1483 | * @param shx The factor by which coordinates are shifted towards the |
| 1484 | * positive X axis direction according to their Y coordinate |
| 1485 | * @param shy The factor by which coordinates are shifted towards the |
| 1486 | * positive Y axis direction according to their X coordinate |
| 1487 | */ |
| 1488 | public void shear(double shx, double shy) { |
| 1489 | transform.shear(shx, shy); |
| 1490 | invalidateTransform(); |
| 1491 | } |
| 1492 | |
| 1493 | /** |
| 1494 | * Composes a Transform object with the transform in this |
| 1495 | * Graphics2D according to the rule last-specified-first-applied. |
| 1496 | * If the currrent transform is Cx, the result of composition |
| 1497 | * with Tx is a new transform Cx'. Cx' becomes the current |
| 1498 | * transform for this Graphics2D. |
| 1499 | * Transforming a point p by the updated transform Cx' is |
| 1500 | * equivalent to first transforming p by Tx and then transforming |
| 1501 | * the result by the original transform Cx. In other words, |
| 1502 | * Cx'(p) = Cx(Tx(p)). |
| 1503 | * A copy of the Tx is made, if necessary, so further |
| 1504 | * modifications to Tx do not affect rendering. |
| 1505 | * @param Tx The Transform object to be composed with the current |
| 1506 | * transform. |
| 1507 | * @see #setTransform |
| 1508 | * @see AffineTransform |
| 1509 | */ |
| 1510 | public void transform(AffineTransform xform) { |
| 1511 | this.transform.concatenate(xform); |
| 1512 | invalidateTransform(); |
| 1513 | } |
| 1514 | |
| 1515 | /** |
| 1516 | * Translate |
| 1517 | */ |
| 1518 | public void translate(int x, int y) { |
| 1519 | transform.translate(x, y); |
| 1520 | if (transformState <= TRANSFORM_INT_TRANSLATE) { |
| 1521 | transX += x; |
| 1522 | transY += y; |
| 1523 | transformState = (((transX | transY) == 0) ? |
| 1524 | TRANSFORM_ISIDENT : TRANSFORM_INT_TRANSLATE); |
| 1525 | } else { |
| 1526 | invalidateTransform(); |
| 1527 | } |
| 1528 | } |
| 1529 | |
| 1530 | /** |
| 1531 | * Sets the Transform in the current graphics state. |
| 1532 | * @param Tx The Transform object to be used in the rendering process. |
| 1533 | * @see #transform |
| 1534 | * @see TransformChain |
| 1535 | * @see AffineTransform |
| 1536 | */ |
| 1537 | public void setTransform(AffineTransform Tx) { |
| 1538 | if ((constrainX|constrainY) == 0) { |
| 1539 | transform.setTransform(Tx); |
| 1540 | } else { |
| 1541 | transform.setToTranslation(constrainX, constrainY); |
| 1542 | transform.concatenate(Tx); |
| 1543 | } |
| 1544 | invalidateTransform(); |
| 1545 | } |
| 1546 | |
| 1547 | protected void invalidateTransform() { |
| 1548 | int type = transform.getType(); |
| 1549 | int origTransformState = transformState; |
| 1550 | if (type == AffineTransform.TYPE_IDENTITY) { |
| 1551 | transformState = TRANSFORM_ISIDENT; |
| 1552 | transX = transY = 0; |
| 1553 | } else if (type == AffineTransform.TYPE_TRANSLATION) { |
| 1554 | double dtx = transform.getTranslateX(); |
| 1555 | double dty = transform.getTranslateY(); |
| 1556 | transX = (int) Math.floor(dtx + 0.5); |
| 1557 | transY = (int) Math.floor(dty + 0.5); |
| 1558 | if (dtx == transX && dty == transY) { |
| 1559 | transformState = TRANSFORM_INT_TRANSLATE; |
| 1560 | } else { |
| 1561 | transformState = TRANSFORM_ANY_TRANSLATE; |
| 1562 | } |
| 1563 | } else if ((type & (AffineTransform.TYPE_FLIP | |
| 1564 | AffineTransform.TYPE_MASK_ROTATION | |
| 1565 | AffineTransform.TYPE_GENERAL_TRANSFORM)) == 0) |
| 1566 | { |
| 1567 | transformState = TRANSFORM_TRANSLATESCALE; |
| 1568 | transX = transY = 0; |
| 1569 | } else { |
| 1570 | transformState = TRANSFORM_GENERIC; |
| 1571 | transX = transY = 0; |
| 1572 | } |
| 1573 | |
| 1574 | if (transformState >= TRANSFORM_TRANSLATESCALE || |
| 1575 | origTransformState >= TRANSFORM_TRANSLATESCALE) |
| 1576 | { |
| 1577 | /* Its only in this case that the previous or current transform |
| 1578 | * was more than a translate that font info is invalidated |
| 1579 | */ |
| 1580 | cachedFRC = null; |
| 1581 | this.validFontInfo = false; |
| 1582 | this.fontMetrics = null; |
| 1583 | this.glyphVectorFontInfo = null; |
| 1584 | |
| 1585 | if (transformState != origTransformState) { |
| 1586 | invalidatePipe(); |
| 1587 | } |
| 1588 | } |
| 1589 | if (strokeState != STROKE_CUSTOM) { |
| 1590 | validateBasicStroke((BasicStroke) stroke); |
| 1591 | } |
| 1592 | } |
| 1593 | |
| 1594 | /** |
| 1595 | * Returns the current Transform in the Graphics2D state. |
| 1596 | * @see #transform |
| 1597 | * @see #setTransform |
| 1598 | */ |
| 1599 | public AffineTransform getTransform() { |
| 1600 | if ((constrainX|constrainY) == 0) { |
| 1601 | return new AffineTransform(transform); |
| 1602 | } |
| 1603 | AffineTransform tx = |
| 1604 | AffineTransform.getTranslateInstance(-constrainX, -constrainY); |
| 1605 | tx.concatenate(transform); |
| 1606 | return tx; |
| 1607 | } |
| 1608 | |
| 1609 | /** |
| 1610 | * Returns the current Transform ignoring the "constrain" |
| 1611 | * rectangle. |
| 1612 | */ |
| 1613 | public AffineTransform cloneTransform() { |
| 1614 | return new AffineTransform(transform); |
| 1615 | } |
| 1616 | |
| 1617 | /** |
| 1618 | * Returns the current Paint in the Graphics2D state. |
| 1619 | * @see #setPaint |
| 1620 | * @see java.awt.Graphics#setColor |
| 1621 | */ |
| 1622 | public Paint getPaint() { |
| 1623 | return paint; |
| 1624 | } |
| 1625 | |
| 1626 | /** |
| 1627 | * Returns the current Composite in the Graphics2D state. |
| 1628 | * @see #setComposite |
| 1629 | */ |
| 1630 | public Composite getComposite() { |
| 1631 | return composite; |
| 1632 | } |
| 1633 | |
| 1634 | public Color getColor() { |
| 1635 | return foregroundColor; |
| 1636 | } |
| 1637 | |
| 1638 | /* |
| 1639 | * Validate the eargb and pixel fields against the current color. |
| 1640 | * |
| 1641 | * The eargb field must take into account the extraAlpha |
| 1642 | * value of an AlphaComposite. It may also take into account |
| 1643 | * the Fsrc Porter-Duff blending function if such a function is |
| 1644 | * a constant (see handling of Clear mode below). For instance, |
| 1645 | * by factoring in the (Fsrc == 0) state of the Clear mode we can |
| 1646 | * use a SrcNoEa loop just as easily as a general Alpha loop |
| 1647 | * since the math will be the same in both cases. |
| 1648 | * |
| 1649 | * The pixel field will always be the best pixel data choice for |
| 1650 | * the final result of all calculations applied to the eargb field. |
| 1651 | * |
| 1652 | * Note that this method is only necessary under the following |
| 1653 | * conditions: |
| 1654 | * (paintState <= PAINT_ALPHA_COLOR && |
| 1655 | * compositeState <= COMP_CUSTOM) |
| 1656 | * though nothing bad will happen if it is run in other states. |
| 1657 | */ |
| 1658 | final void validateColor() { |
| 1659 | int eargb; |
| 1660 | if (imageComp == CompositeType.Clear) { |
| 1661 | eargb = 0; |
| 1662 | } else { |
| 1663 | eargb = foregroundColor.getRGB(); |
| 1664 | if (compositeState <= COMP_ALPHA && |
| 1665 | imageComp != CompositeType.SrcNoEa && |
| 1666 | imageComp != CompositeType.SrcOverNoEa) |
| 1667 | { |
| 1668 | AlphaComposite alphacomp = (AlphaComposite) composite; |
| 1669 | int a = Math.round(alphacomp.getAlpha() * (eargb >>> 24)); |
| 1670 | eargb = (eargb & 0x00ffffff) | (a << 24); |
| 1671 | } |
| 1672 | } |
| 1673 | this.eargb = eargb; |
| 1674 | this.pixel = surfaceData.pixelFor(eargb); |
| 1675 | } |
| 1676 | |
| 1677 | public void setColor(Color color) { |
| 1678 | if (color == null || color == paint) { |
| 1679 | return; |
| 1680 | } |
| 1681 | this.paint = foregroundColor = color; |
| 1682 | validateColor(); |
| 1683 | if ((eargb >> 24) == -1) { |
| 1684 | if (paintState == PAINT_OPAQUECOLOR) { |
| 1685 | return; |
| 1686 | } |
| 1687 | paintState = PAINT_OPAQUECOLOR; |
| 1688 | if (imageComp == CompositeType.SrcOverNoEa) { |
| 1689 | // special case where compState depends on opacity of paint |
| 1690 | compositeState = COMP_ISCOPY; |
| 1691 | } |
| 1692 | } else { |
| 1693 | if (paintState == PAINT_ALPHACOLOR) { |
| 1694 | return; |
| 1695 | } |
| 1696 | paintState = PAINT_ALPHACOLOR; |
| 1697 | if (imageComp == CompositeType.SrcOverNoEa) { |
| 1698 | // special case where compState depends on opacity of paint |
| 1699 | compositeState = COMP_ALPHA; |
| 1700 | } |
| 1701 | } |
| 1702 | validFontInfo = false; |
| 1703 | invalidatePipe(); |
| 1704 | } |
| 1705 | |
| 1706 | /** |
| 1707 | * Sets the background color in this context used for clearing a region. |
| 1708 | * When Graphics2D is constructed for a component, the backgroung color is |
| 1709 | * inherited from the component. Setting the background color in the |
| 1710 | * Graphics2D context only affects the subsequent clearRect() calls and |
| 1711 | * not the background color of the component. To change the background |
| 1712 | * of the component, use appropriate methods of the component. |
| 1713 | * @param color The background color that should be used in |
| 1714 | * subsequent calls to clearRect(). |
| 1715 | * @see getBackground |
| 1716 | * @see Graphics.clearRect() |
| 1717 | */ |
| 1718 | public void setBackground(Color color) { |
| 1719 | backgroundColor = color; |
| 1720 | } |
| 1721 | |
| 1722 | /** |
| 1723 | * Returns the background color used for clearing a region. |
| 1724 | * @see setBackground |
| 1725 | */ |
| 1726 | public Color getBackground() { |
| 1727 | return backgroundColor; |
| 1728 | } |
| 1729 | |
| 1730 | /** |
| 1731 | * Returns the current Stroke in the Graphics2D state. |
| 1732 | * @see setStroke |
| 1733 | */ |
| 1734 | public Stroke getStroke() { |
| 1735 | return stroke; |
| 1736 | } |
| 1737 | |
| 1738 | public Rectangle getClipBounds() { |
| 1739 | Rectangle r; |
| 1740 | if (clipState == CLIP_DEVICE) { |
| 1741 | r = null; |
| 1742 | } else if (transformState <= TRANSFORM_INT_TRANSLATE) { |
| 1743 | if (usrClip instanceof Rectangle) { |
| 1744 | r = new Rectangle((Rectangle) usrClip); |
| 1745 | } else { |
| 1746 | r = usrClip.getBounds(); |
| 1747 | } |
| 1748 | r.translate(-transX, -transY); |
| 1749 | } else { |
| 1750 | r = getClip().getBounds(); |
| 1751 | } |
| 1752 | return r; |
| 1753 | } |
| 1754 | |
| 1755 | public Rectangle getClipBounds(Rectangle r) { |
| 1756 | if (clipState != CLIP_DEVICE) { |
| 1757 | if (transformState <= TRANSFORM_INT_TRANSLATE) { |
| 1758 | if (usrClip instanceof Rectangle) { |
| 1759 | r.setBounds((Rectangle) usrClip); |
| 1760 | } else { |
| 1761 | r.setBounds(usrClip.getBounds()); |
| 1762 | } |
| 1763 | r.translate(-transX, -transY); |
| 1764 | } else { |
| 1765 | r.setBounds(getClip().getBounds()); |
| 1766 | } |
| 1767 | } else if (r == null) { |
| 1768 | throw new NullPointerException("null rectangle parameter"); |
| 1769 | } |
| 1770 | return r; |
| 1771 | } |
| 1772 | |
| 1773 | public boolean hitClip(int x, int y, int width, int height) { |
| 1774 | if (width <= 0 || height <= 0) { |
| 1775 | return false; |
| 1776 | } |
| 1777 | if (transformState > TRANSFORM_INT_TRANSLATE) { |
| 1778 | // Note: Technically the most accurate test would be to |
| 1779 | // raster scan the parallelogram of the transformed rectangle |
| 1780 | // and do a span for span hit test against the clip, but for |
| 1781 | // speed we approximate the test with a bounding box of the |
| 1782 | // transformed rectangle. The cost of rasterizing the |
| 1783 | // transformed rectangle is probably high enough that it is |
| 1784 | // not worth doing so to save the caller from having to call |
| 1785 | // a rendering method where we will end up discovering the |
| 1786 | // same answer in about the same amount of time anyway. |
| 1787 | // This logic breaks down if this hit test is being performed |
| 1788 | // on the bounds of a group of shapes in which case it might |
| 1789 | // be beneficial to be a little more accurate to avoid lots |
| 1790 | // of subsequent rendering calls. In either case, this relaxed |
| 1791 | // test should not be significantly less accurate than the |
| 1792 | // optimal test for most transforms and so the conservative |
| 1793 | // answer should not cause too much extra work. |
| 1794 | |
| 1795 | double d[] = { |
| 1796 | x, y, |
| 1797 | x+width, y, |
| 1798 | x, y+height, |
| 1799 | x+width, y+height |
| 1800 | }; |
| 1801 | transform.transform(d, 0, d, 0, 4); |
| 1802 | x = (int) Math.floor(Math.min(Math.min(d[0], d[2]), |
| 1803 | Math.min(d[4], d[6]))); |
| 1804 | y = (int) Math.floor(Math.min(Math.min(d[1], d[3]), |
| 1805 | Math.min(d[5], d[7]))); |
| 1806 | width = (int) Math.ceil(Math.max(Math.max(d[0], d[2]), |
| 1807 | Math.max(d[4], d[6]))); |
| 1808 | height = (int) Math.ceil(Math.max(Math.max(d[1], d[3]), |
| 1809 | Math.max(d[5], d[7]))); |
| 1810 | } else { |
| 1811 | x += transX; |
| 1812 | y += transY; |
| 1813 | width += x; |
| 1814 | height += y; |
| 1815 | } |
| 1816 | if (!getCompClip().intersectsQuickCheckXYXY(x, y, width, height)) { |
| 1817 | return false; |
| 1818 | } |
| 1819 | // REMIND: We could go one step further here and examine the |
| 1820 | // non-rectangular clip shape more closely if there is one. |
| 1821 | // Since the clip has already been rasterized, the performance |
| 1822 | // penalty of doing the scan is probably still within the bounds |
| 1823 | // of a good tradeoff between speed and quality of the answer. |
| 1824 | return true; |
| 1825 | } |
| 1826 | |
| 1827 | protected void validateCompClip() { |
| 1828 | int origClipState = clipState; |
| 1829 | if (usrClip == null) { |
| 1830 | clipState = CLIP_DEVICE; |
| 1831 | clipRegion = devClip; |
| 1832 | } else if (usrClip instanceof Rectangle2D) { |
| 1833 | clipState = CLIP_RECTANGULAR; |
| 1834 | if (usrClip instanceof Rectangle) { |
| 1835 | clipRegion = devClip.getIntersection((Rectangle)usrClip); |
| 1836 | } else { |
| 1837 | clipRegion = devClip.getIntersection(usrClip.getBounds()); |
| 1838 | } |
| 1839 | } else { |
| 1840 | PathIterator cpi = usrClip.getPathIterator(null); |
| 1841 | int box[] = new int[4]; |
| 1842 | ShapeSpanIterator sr = LoopPipe.getFillSSI(this); |
| 1843 | try { |
| 1844 | sr.setOutputArea(devClip); |
| 1845 | sr.appendPath(cpi); |
| 1846 | sr.getPathBox(box); |
| 1847 | Region r = Region.getInstance(box); |
| 1848 | r.appendSpans(sr); |
| 1849 | clipRegion = r; |
| 1850 | clipState = |
| 1851 | r.isRectangular() ? CLIP_RECTANGULAR : CLIP_SHAPE; |
| 1852 | } finally { |
| 1853 | sr.dispose(); |
| 1854 | } |
| 1855 | } |
| 1856 | if (origClipState != clipState && |
| 1857 | (clipState == CLIP_SHAPE || origClipState == CLIP_SHAPE)) |
| 1858 | { |
| 1859 | validFontInfo = false; |
| 1860 | invalidatePipe(); |
| 1861 | } |
| 1862 | } |
| 1863 | |
| 1864 | static final int NON_RECTILINEAR_TRANSFORM_MASK = |
| 1865 | (AffineTransform.TYPE_GENERAL_TRANSFORM | |
| 1866 | AffineTransform.TYPE_GENERAL_ROTATION); |
| 1867 | |
| 1868 | protected Shape transformShape(Shape s) { |
| 1869 | if (s == null) { |
| 1870 | return null; |
| 1871 | } |
| 1872 | if (transformState > TRANSFORM_INT_TRANSLATE) { |
| 1873 | return transformShape(transform, s); |
| 1874 | } else { |
| 1875 | return transformShape(transX, transY, s); |
| 1876 | } |
| 1877 | } |
| 1878 | |
| 1879 | public Shape untransformShape(Shape s) { |
| 1880 | if (s == null) { |
| 1881 | return null; |
| 1882 | } |
| 1883 | if (transformState > TRANSFORM_INT_TRANSLATE) { |
| 1884 | try { |
| 1885 | return transformShape(transform.createInverse(), s); |
| 1886 | } catch (NoninvertibleTransformException e) { |
| 1887 | return null; |
| 1888 | } |
| 1889 | } else { |
| 1890 | return transformShape(-transX, -transY, s); |
| 1891 | } |
| 1892 | } |
| 1893 | |
| 1894 | protected static Shape transformShape(int tx, int ty, Shape s) { |
| 1895 | if (s == null) { |
| 1896 | return null; |
| 1897 | } |
| 1898 | |
| 1899 | if (s instanceof Rectangle) { |
| 1900 | Rectangle r = s.getBounds(); |
| 1901 | r.translate(tx, ty); |
| 1902 | return r; |
| 1903 | } |
| 1904 | if (s instanceof Rectangle2D) { |
| 1905 | Rectangle2D rect = (Rectangle2D) s; |
| 1906 | return new Rectangle2D.Double(rect.getX() + tx, |
| 1907 | rect.getY() + ty, |
| 1908 | rect.getWidth(), |
| 1909 | rect.getHeight()); |
| 1910 | } |
| 1911 | |
| 1912 | if (tx == 0 && ty == 0) { |
| 1913 | return cloneShape(s); |
| 1914 | } |
| 1915 | |
| 1916 | AffineTransform mat = AffineTransform.getTranslateInstance(tx, ty); |
| 1917 | return mat.createTransformedShape(s); |
| 1918 | } |
| 1919 | |
| 1920 | protected static Shape transformShape(AffineTransform tx, Shape clip) { |
| 1921 | if (clip == null) { |
| 1922 | return null; |
| 1923 | } |
| 1924 | |
| 1925 | if (clip instanceof Rectangle2D && |
| 1926 | (tx.getType() & NON_RECTILINEAR_TRANSFORM_MASK) == 0) |
| 1927 | { |
| 1928 | Rectangle2D rect = (Rectangle2D) clip; |
| 1929 | double matrix[] = new double[4]; |
| 1930 | matrix[0] = rect.getX(); |
| 1931 | matrix[1] = rect.getY(); |
| 1932 | matrix[2] = matrix[0] + rect.getWidth(); |
| 1933 | matrix[3] = matrix[1] + rect.getHeight(); |
| 1934 | tx.transform(matrix, 0, matrix, 0, 2); |
| 1935 | rect = new Rectangle2D.Float(); |
| 1936 | rect.setFrameFromDiagonal(matrix[0], matrix[1], |
| 1937 | matrix[2], matrix[3]); |
| 1938 | return rect; |
| 1939 | } |
| 1940 | |
| 1941 | if (tx.isIdentity()) { |
| 1942 | return cloneShape(clip); |
| 1943 | } |
| 1944 | |
| 1945 | return tx.createTransformedShape(clip); |
| 1946 | } |
| 1947 | |
| 1948 | public void clipRect(int x, int y, int w, int h) { |
| 1949 | clip(new Rectangle(x, y, w, h)); |
| 1950 | } |
| 1951 | |
| 1952 | public void setClip(int x, int y, int w, int h) { |
| 1953 | setClip(new Rectangle(x, y, w, h)); |
| 1954 | } |
| 1955 | |
| 1956 | public Shape getClip() { |
| 1957 | return untransformShape(usrClip); |
| 1958 | } |
| 1959 | |
| 1960 | public void setClip(Shape sh) { |
| 1961 | usrClip = transformShape(sh); |
| 1962 | validateCompClip(); |
| 1963 | } |
| 1964 | |
| 1965 | /** |
| 1966 | * Intersects the current clip with the specified Path and sets the |
| 1967 | * current clip to the resulting intersection. The clip is transformed |
| 1968 | * with the current transform in the Graphics2D state before being |
| 1969 | * intersected with the current clip. This method is used to make the |
| 1970 | * current clip smaller. To make the clip larger, use any setClip method. |
| 1971 | * @param p The Path to be intersected with the current clip. |
| 1972 | */ |
| 1973 | public void clip(Shape s) { |
| 1974 | s = transformShape(s); |
| 1975 | if (usrClip != null) { |
| 1976 | s = intersectShapes(usrClip, s, true, true); |
| 1977 | } |
| 1978 | usrClip = s; |
| 1979 | validateCompClip(); |
| 1980 | } |
| 1981 | |
| 1982 | public void setPaintMode() { |
| 1983 | setComposite(AlphaComposite.SrcOver); |
| 1984 | } |
| 1985 | |
| 1986 | public void setXORMode(Color c) { |
| 1987 | if (c == null) { |
| 1988 | throw new IllegalArgumentException("null XORColor"); |
| 1989 | } |
| 1990 | setComposite(new XORComposite(c, surfaceData)); |
| 1991 | } |
| 1992 | |
| 1993 | Blit lastCAblit; |
| 1994 | Composite lastCAcomp; |
| 1995 | |
| 1996 | public void copyArea(int x, int y, int w, int h, int dx, int dy) { |
| 1997 | try { |
| 1998 | doCopyArea(x, y, w, h, dx, dy); |
| 1999 | } catch (InvalidPipeException e) { |
| 2000 | revalidateAll(); |
| 2001 | try { |
| 2002 | doCopyArea(x, y, w, h, dx, dy); |
| 2003 | } catch (InvalidPipeException e2) { |
| 2004 | // Still catching the exception; we are not yet ready to |
| 2005 | // validate the surfaceData correctly. Fail for now and |
| 2006 | // try again next time around. |
| 2007 | } |
| 2008 | } finally { |
| 2009 | surfaceData.markDirty(); |
| 2010 | } |
| 2011 | } |
| 2012 | |
| 2013 | private void doCopyArea(int x, int y, int w, int h, int dx, int dy) { |
| 2014 | if (w <= 0 || h <= 0) { |
| 2015 | return; |
| 2016 | } |
| 2017 | SurfaceData theData = surfaceData; |
| 2018 | if (theData.copyArea(this, x, y, w, h, dx, dy)) { |
| 2019 | return; |
| 2020 | } |
| 2021 | if (transformState >= TRANSFORM_TRANSLATESCALE) { |
| 2022 | throw new InternalError("transformed copyArea not implemented yet"); |
| 2023 | } |
| 2024 | // REMIND: This method does not deal with missing data from the |
| 2025 | // source object (i.e. it does not send exposure events...) |
| 2026 | |
| 2027 | Region clip = getCompClip(); |
| 2028 | |
| 2029 | Composite comp = composite; |
| 2030 | if (lastCAcomp != comp) { |
| 2031 | SurfaceType dsttype = theData.getSurfaceType(); |
| 2032 | CompositeType comptype = imageComp; |
| 2033 | if (CompositeType.SrcOverNoEa.equals(comptype) && |
| 2034 | theData.getTransparency() == Transparency.OPAQUE) |
| 2035 | { |
| 2036 | comptype = CompositeType.SrcNoEa; |
| 2037 | } |
| 2038 | lastCAblit = Blit.locate(dsttype, comptype, dsttype); |
| 2039 | lastCAcomp = comp; |
| 2040 | } |
| 2041 | |
| 2042 | x += transX; |
| 2043 | y += transY; |
| 2044 | |
| 2045 | Blit ob = lastCAblit; |
| 2046 | if (dy == 0 && dx > 0 && dx < w) { |
| 2047 | while (w > 0) { |
| 2048 | int partW = Math.min(w, dx); |
| 2049 | w -= partW; |
| 2050 | int sx = x + w; |
| 2051 | ob.Blit(theData, theData, comp, clip, |
| 2052 | sx, y, sx+dx, y+dy, partW, h); |
| 2053 | } |
| 2054 | return; |
| 2055 | } |
| 2056 | if (dy > 0 && dy < h && dx > -w && dx < w) { |
| 2057 | while (h > 0) { |
| 2058 | int partH = Math.min(h, dy); |
| 2059 | h -= partH; |
| 2060 | int sy = y + h; |
| 2061 | ob.Blit(theData, theData, comp, clip, |
| 2062 | x, sy, x+dx, sy+dy, w, partH); |
| 2063 | } |
| 2064 | return; |
| 2065 | } |
| 2066 | ob.Blit(theData, theData, comp, clip, x, y, x+dx, y+dy, w, h); |
| 2067 | } |
| 2068 | |
| 2069 | /* |
| 2070 | public void XcopyArea(int x, int y, int w, int h, int dx, int dy) { |
| 2071 | Rectangle rect = new Rectangle(x, y, w, h); |
| 2072 | rect = transformBounds(rect, transform); |
| 2073 | Point2D point = new Point2D.Float(dx, dy); |
| 2074 | Point2D root = new Point2D.Float(0, 0); |
| 2075 | point = transform.transform(point, point); |
| 2076 | root = transform.transform(root, root); |
| 2077 | int fdx = (int)(point.getX()-root.getX()); |
| 2078 | int fdy = (int)(point.getY()-root.getY()); |
| 2079 | |
| 2080 | Rectangle r = getCompBounds().intersection(rect.getBounds()); |
| 2081 | |
| 2082 | if (r.isEmpty()) { |
| 2083 | return; |
| 2084 | } |
| 2085 | |
| 2086 | // Begin Rasterizer for Clip Shape |
| 2087 | boolean skipClip = true; |
| 2088 | byte[] clipAlpha = null; |
| 2089 | |
| 2090 | if (clipState == CLIP_SHAPE) { |
| 2091 | |
| 2092 | int box[] = new int[4]; |
| 2093 | |
| 2094 | clipRegion.getBounds(box); |
| 2095 | Rectangle devR = new Rectangle(box[0], box[1], |
| 2096 | box[2] - box[0], |
| 2097 | box[3] - box[1]); |
| 2098 | if (!devR.isEmpty()) { |
| 2099 | OutputManager mgr = getOutputManager(); |
| 2100 | RegionIterator ri = clipRegion.getIterator(); |
| 2101 | while (ri.nextYRange(box)) { |
| 2102 | int spany = box[1]; |
| 2103 | int spanh = box[3] - spany; |
| 2104 | while (ri.nextXBand(box)) { |
| 2105 | int spanx = box[0]; |
| 2106 | int spanw = box[2] - spanx; |
| 2107 | mgr.copyArea(this, null, |
| 2108 | spanw, 0, |
| 2109 | spanx, spany, |
| 2110 | spanw, spanh, |
| 2111 | fdx, fdy, |
| 2112 | null); |
| 2113 | } |
| 2114 | } |
| 2115 | } |
| 2116 | return; |
| 2117 | } |
| 2118 | // End Rasterizer for Clip Shape |
| 2119 | |
| 2120 | getOutputManager().copyArea(this, null, |
| 2121 | r.width, 0, |
| 2122 | r.x, r.y, r.width, |
| 2123 | r.height, fdx, fdy, |
| 2124 | null); |
| 2125 | } |
| 2126 | */ |
| 2127 | |
| 2128 | public void drawLine(int x1, int y1, int x2, int y2) { |
| 2129 | try { |
| 2130 | drawpipe.drawLine(this, x1, y1, x2, y2); |
| 2131 | } catch (InvalidPipeException e) { |
| 2132 | revalidateAll(); |
| 2133 | try { |
| 2134 | drawpipe.drawLine(this, x1, y1, x2, y2); |
| 2135 | } catch (InvalidPipeException e2) { |
| 2136 | // Still catching the exception; we are not yet ready to |
| 2137 | // validate the surfaceData correctly. Fail for now and |
| 2138 | // try again next time around. |
| 2139 | } |
| 2140 | } finally { |
| 2141 | surfaceData.markDirty(); |
| 2142 | } |
| 2143 | } |
| 2144 | |
| 2145 | public void drawRoundRect(int x, int y, int w, int h, int arcW, int arcH) { |
| 2146 | try { |
| 2147 | drawpipe.drawRoundRect(this, x, y, w, h, arcW, arcH); |
| 2148 | } catch (InvalidPipeException e) { |
| 2149 | revalidateAll(); |
| 2150 | try { |
| 2151 | drawpipe.drawRoundRect(this, x, y, w, h, arcW, arcH); |
| 2152 | } catch (InvalidPipeException e2) { |
| 2153 | // Still catching the exception; we are not yet ready to |
| 2154 | // validate the surfaceData correctly. Fail for now and |
| 2155 | // try again next time around. |
| 2156 | } |
| 2157 | } finally { |
| 2158 | surfaceData.markDirty(); |
| 2159 | } |
| 2160 | } |
| 2161 | |
| 2162 | public void fillRoundRect(int x, int y, int w, int h, int arcW, int arcH) { |
| 2163 | try { |
| 2164 | fillpipe.fillRoundRect(this, x, y, w, h, arcW, arcH); |
| 2165 | } catch (InvalidPipeException e) { |
| 2166 | revalidateAll(); |
| 2167 | try { |
| 2168 | fillpipe.fillRoundRect(this, x, y, w, h, arcW, arcH); |
| 2169 | } catch (InvalidPipeException e2) { |
| 2170 | // Still catching the exception; we are not yet ready to |
| 2171 | // validate the surfaceData correctly. Fail for now and |
| 2172 | // try again next time around. |
| 2173 | } |
| 2174 | } finally { |
| 2175 | surfaceData.markDirty(); |
| 2176 | } |
| 2177 | } |
| 2178 | |
| 2179 | public void drawOval(int x, int y, int w, int h) { |
| 2180 | try { |
| 2181 | drawpipe.drawOval(this, x, y, w, h); |
| 2182 | } catch (InvalidPipeException e) { |
| 2183 | revalidateAll(); |
| 2184 | try { |
| 2185 | drawpipe.drawOval(this, x, y, w, h); |
| 2186 | } catch (InvalidPipeException e2) { |
| 2187 | // Still catching the exception; we are not yet ready to |
| 2188 | // validate the surfaceData correctly. Fail for now and |
| 2189 | // try again next time around. |
| 2190 | } |
| 2191 | } finally { |
| 2192 | surfaceData.markDirty(); |
| 2193 | } |
| 2194 | } |
| 2195 | |
| 2196 | public void fillOval(int x, int y, int w, int h) { |
| 2197 | try { |
| 2198 | fillpipe.fillOval(this, x, y, w, h); |
| 2199 | } catch (InvalidPipeException e) { |
| 2200 | revalidateAll(); |
| 2201 | try { |
| 2202 | fillpipe.fillOval(this, x, y, w, h); |
| 2203 | } catch (InvalidPipeException e2) { |
| 2204 | // Still catching the exception; we are not yet ready to |
| 2205 | // validate the surfaceData correctly. Fail for now and |
| 2206 | // try again next time around. |
| 2207 | } |
| 2208 | } finally { |
| 2209 | surfaceData.markDirty(); |
| 2210 | } |
| 2211 | } |
| 2212 | |
| 2213 | public void drawArc(int x, int y, int w, int h, |
| 2214 | int startAngl, int arcAngl) { |
| 2215 | try { |
| 2216 | drawpipe.drawArc(this, x, y, w, h, startAngl, arcAngl); |
| 2217 | } catch (InvalidPipeException e) { |
| 2218 | revalidateAll(); |
| 2219 | try { |
| 2220 | drawpipe.drawArc(this, x, y, w, h, startAngl, arcAngl); |
| 2221 | } catch (InvalidPipeException e2) { |
| 2222 | // Still catching the exception; we are not yet ready to |
| 2223 | // validate the surfaceData correctly. Fail for now and |
| 2224 | // try again next time around. |
| 2225 | } |
| 2226 | } finally { |
| 2227 | surfaceData.markDirty(); |
| 2228 | } |
| 2229 | } |
| 2230 | |
| 2231 | public void fillArc(int x, int y, int w, int h, |
| 2232 | int startAngl, int arcAngl) { |
| 2233 | try { |
| 2234 | fillpipe.fillArc(this, x, y, w, h, startAngl, arcAngl); |
| 2235 | } catch (InvalidPipeException e) { |
| 2236 | revalidateAll(); |
| 2237 | try { |
| 2238 | fillpipe.fillArc(this, x, y, w, h, startAngl, arcAngl); |
| 2239 | } catch (InvalidPipeException e2) { |
| 2240 | // Still catching the exception; we are not yet ready to |
| 2241 | // validate the surfaceData correctly. Fail for now and |
| 2242 | // try again next time around. |
| 2243 | } |
| 2244 | } finally { |
| 2245 | surfaceData.markDirty(); |
| 2246 | } |
| 2247 | } |
| 2248 | |
| 2249 | public void drawPolyline(int xPoints[], int yPoints[], int nPoints) { |
| 2250 | try { |
| 2251 | drawpipe.drawPolyline(this, xPoints, yPoints, nPoints); |
| 2252 | } catch (InvalidPipeException e) { |
| 2253 | revalidateAll(); |
| 2254 | try { |
| 2255 | drawpipe.drawPolyline(this, xPoints, yPoints, nPoints); |
| 2256 | } catch (InvalidPipeException e2) { |
| 2257 | // Still catching the exception; we are not yet ready to |
| 2258 | // validate the surfaceData correctly. Fail for now and |
| 2259 | // try again next time around. |
| 2260 | } |
| 2261 | } finally { |
| 2262 | surfaceData.markDirty(); |
| 2263 | } |
| 2264 | } |
| 2265 | |
| 2266 | public void drawPolygon(int xPoints[], int yPoints[], int nPoints) { |
| 2267 | try { |
| 2268 | drawpipe.drawPolygon(this, xPoints, yPoints, nPoints); |
| 2269 | } catch (InvalidPipeException e) { |
| 2270 | revalidateAll(); |
| 2271 | try { |
| 2272 | drawpipe.drawPolygon(this, xPoints, yPoints, nPoints); |
| 2273 | } catch (InvalidPipeException e2) { |
| 2274 | // Still catching the exception; we are not yet ready to |
| 2275 | // validate the surfaceData correctly. Fail for now and |
| 2276 | // try again next time around. |
| 2277 | } |
| 2278 | } finally { |
| 2279 | surfaceData.markDirty(); |
| 2280 | } |
| 2281 | } |
| 2282 | |
| 2283 | public void fillPolygon(int xPoints[], int yPoints[], int nPoints) { |
| 2284 | try { |
| 2285 | fillpipe.fillPolygon(this, xPoints, yPoints, nPoints); |
| 2286 | } catch (InvalidPipeException e) { |
| 2287 | revalidateAll(); |
| 2288 | try { |
| 2289 | fillpipe.fillPolygon(this, xPoints, yPoints, nPoints); |
| 2290 | } catch (InvalidPipeException e2) { |
| 2291 | // Still catching the exception; we are not yet ready to |
| 2292 | // validate the surfaceData correctly. Fail for now and |
| 2293 | // try again next time around. |
| 2294 | } |
| 2295 | } finally { |
| 2296 | surfaceData.markDirty(); |
| 2297 | } |
| 2298 | } |
| 2299 | |
| 2300 | public void drawRect (int x, int y, int w, int h) { |
| 2301 | try { |
| 2302 | drawpipe.drawRect(this, x, y, w, h); |
| 2303 | } catch (InvalidPipeException e) { |
| 2304 | revalidateAll(); |
| 2305 | try { |
| 2306 | drawpipe.drawRect(this, x, y, w, h); |
| 2307 | } catch (InvalidPipeException e2) { |
| 2308 | // Still catching the exception; we are not yet ready to |
| 2309 | // validate the surfaceData correctly. Fail for now and |
| 2310 | // try again next time around. |
| 2311 | } |
| 2312 | } finally { |
| 2313 | surfaceData.markDirty(); |
| 2314 | } |
| 2315 | } |
| 2316 | |
| 2317 | public void fillRect (int x, int y, int w, int h) { |
| 2318 | try { |
| 2319 | fillpipe.fillRect(this, x, y, w, h); |
| 2320 | } catch (InvalidPipeException e) { |
| 2321 | revalidateAll(); |
| 2322 | try { |
| 2323 | fillpipe.fillRect(this, x, y, w, h); |
| 2324 | } catch (InvalidPipeException e2) { |
| 2325 | // Still catching the exception; we are not yet ready to |
| 2326 | // validate the surfaceData correctly. Fail for now and |
| 2327 | // try again next time around. |
| 2328 | } |
| 2329 | } finally { |
| 2330 | surfaceData.markDirty(); |
| 2331 | } |
| 2332 | } |
| 2333 | |
| 2334 | private void revalidateAll() { |
| 2335 | try { |
| 2336 | // REMIND: This locking needs to be done around the |
| 2337 | // caller of this method so that the pipe stays valid |
| 2338 | // long enough to call the new primitive. |
| 2339 | // REMIND: No locking yet in screen SurfaceData objects! |
| 2340 | // surfaceData.lock(); |
| 2341 | surfaceData = surfaceData.getReplacement(); |
| 2342 | if (surfaceData == null) { |
| 2343 | surfaceData = NullSurfaceData.theInstance; |
| 2344 | } |
| 2345 | |
| 2346 | // this will recalculate the composite clip |
| 2347 | setDevClip(surfaceData.getBounds()); |
| 2348 | |
| 2349 | if (paintState <= PAINT_ALPHACOLOR) { |
| 2350 | validateColor(); |
| 2351 | } |
| 2352 | if (composite instanceof XORComposite) { |
| 2353 | Color c = ((XORComposite) composite).getXorColor(); |
| 2354 | setComposite(new XORComposite(c, surfaceData)); |
| 2355 | } |
| 2356 | validatePipe(); |
| 2357 | } finally { |
| 2358 | // REMIND: No locking yet in screen SurfaceData objects! |
| 2359 | // surfaceData.unlock(); |
| 2360 | } |
| 2361 | } |
| 2362 | |
| 2363 | public void clearRect(int x, int y, int w, int h) { |
| 2364 | // REMIND: has some "interesting" consequences if threads are |
| 2365 | // not synchronized |
| 2366 | Composite c = composite; |
| 2367 | Paint p = paint; |
| 2368 | setComposite(AlphaComposite.Src); |
| 2369 | setColor(getBackground()); |
| 2370 | validatePipe(); |
| 2371 | fillRect(x, y, w, h); |
| 2372 | setPaint(p); |
| 2373 | setComposite(c); |
| 2374 | } |
| 2375 | |
| 2376 | /** |
| 2377 | * Strokes the outline of a Path using the settings of the current |
| 2378 | * graphics state. The rendering attributes applied include the |
| 2379 | * clip, transform, paint or color, composite and stroke attributes. |
| 2380 | * @param p The path to be drawn. |
| 2381 | * @see #setStroke |
| 2382 | * @see #setPaint |
| 2383 | * @see java.awt.Graphics#setColor |
| 2384 | * @see #transform |
| 2385 | * @see #setTransform |
| 2386 | * @see #clip |
| 2387 | * @see #setClip |
| 2388 | * @see #setComposite |
| 2389 | */ |
| 2390 | public void draw(Shape s) { |
| 2391 | try { |
| 2392 | shapepipe.draw(this, s); |
| 2393 | } catch (InvalidPipeException e) { |
| 2394 | revalidateAll(); |
| 2395 | try { |
| 2396 | shapepipe.draw(this, s); |
| 2397 | } catch (InvalidPipeException e2) { |
| 2398 | // Still catching the exception; we are not yet ready to |
| 2399 | // validate the surfaceData correctly. Fail for now and |
| 2400 | // try again next time around. |
| 2401 | } |
| 2402 | } finally { |
| 2403 | surfaceData.markDirty(); |
| 2404 | } |
| 2405 | } |
| 2406 | |
| 2407 | |
| 2408 | /** |
| 2409 | * Fills the interior of a Path using the settings of the current |
| 2410 | * graphics state. The rendering attributes applied include the |
| 2411 | * clip, transform, paint or color, and composite. |
| 2412 | * @see #setPaint |
| 2413 | * @see java.awt.Graphics#setColor |
| 2414 | * @see #transform |
| 2415 | * @see #setTransform |
| 2416 | * @see #setComposite |
| 2417 | * @see #clip |
| 2418 | * @see #setClip |
| 2419 | */ |
| 2420 | public void fill(Shape s) { |
| 2421 | try { |
| 2422 | shapepipe.fill(this, s); |
| 2423 | } catch (InvalidPipeException e) { |
| 2424 | revalidateAll(); |
| 2425 | try { |
| 2426 | shapepipe.fill(this, s); |
| 2427 | } catch (InvalidPipeException e2) { |
| 2428 | // Still catching the exception; we are not yet ready to |
| 2429 | // validate the surfaceData correctly. Fail for now and |
| 2430 | // try again next time around. |
| 2431 | } |
| 2432 | } finally { |
| 2433 | surfaceData.markDirty(); |
| 2434 | } |
| 2435 | } |
| 2436 | |
| 2437 | /** |
| 2438 | * Returns true if the given AffineTransform is an integer |
| 2439 | * translation. |
| 2440 | */ |
| 2441 | private static boolean isIntegerTranslation(AffineTransform xform) { |
| 2442 | if (xform.isIdentity()) { |
| 2443 | return true; |
| 2444 | } |
| 2445 | if (xform.getType() == AffineTransform.TYPE_TRANSLATION) { |
| 2446 | double tx = xform.getTranslateX(); |
| 2447 | double ty = xform.getTranslateY(); |
| 2448 | return (tx == (int)tx && ty == (int)ty); |
| 2449 | } |
| 2450 | return false; |
| 2451 | } |
| 2452 | |
| 2453 | /** |
| 2454 | * Returns the index of the tile corresponding to the supplied position |
| 2455 | * given the tile grid offset and size along the same axis. |
| 2456 | */ |
| 2457 | private static int getTileIndex(int p, int tileGridOffset, int tileSize) { |
| 2458 | p -= tileGridOffset; |
| 2459 | if (p < 0) { |
| 2460 | p += 1 - tileSize; // force round to -infinity (ceiling) |
| 2461 | } |
| 2462 | return p/tileSize; |
| 2463 | } |
| 2464 | |
| 2465 | /** |
| 2466 | * Returns a rectangle in image coordinates that may be required |
| 2467 | * in order to draw the given image into the given clipping region |
| 2468 | * through a pair of AffineTransforms. In addition, horizontal and |
| 2469 | * vertical padding factors for antialising and interpolation may |
| 2470 | * be used. |
| 2471 | */ |
| 2472 | private static Rectangle getImageRegion(RenderedImage img, |
| 2473 | Region compClip, |
| 2474 | AffineTransform transform, |
| 2475 | AffineTransform xform, |
| 2476 | int padX, int padY) { |
| 2477 | Rectangle imageRect = |
| 2478 | new Rectangle(img.getMinX(), img.getMinY(), |
| 2479 | img.getWidth(), img.getHeight()); |
| 2480 | |
| 2481 | Rectangle result = null; |
| 2482 | try { |
| 2483 | double p[] = new double[8]; |
| 2484 | p[0] = p[2] = compClip.getLoX(); |
| 2485 | p[4] = p[6] = compClip.getHiX(); |
| 2486 | p[1] = p[5] = compClip.getLoY(); |
| 2487 | p[3] = p[7] = compClip.getHiY(); |
| 2488 | |
| 2489 | // Inverse transform the output bounding rect |
| 2490 | transform.inverseTransform(p, 0, p, 0, 4); |
| 2491 | xform.inverseTransform(p, 0, p, 0, 4); |
| 2492 | |
| 2493 | // Determine a bounding box for the inverse transformed region |
| 2494 | double x0,x1,y0,y1; |
| 2495 | x0 = x1 = p[0]; |
| 2496 | y0 = y1 = p[1]; |
| 2497 | |
| 2498 | for (int i = 2; i < 8; ) { |
| 2499 | double pt = p[i++]; |
| 2500 | if (pt < x0) { |
| 2501 | x0 = pt; |
| 2502 | } else if (pt > x1) { |
| 2503 | x1 = pt; |
| 2504 | } |
| 2505 | pt = p[i++]; |
| 2506 | if (pt < y0) { |
| 2507 | y0 = pt; |
| 2508 | } else if (pt > y1) { |
| 2509 | y1 = pt; |
| 2510 | } |
| 2511 | } |
| 2512 | |
| 2513 | // This is padding for anti-aliasing and such. It may |
| 2514 | // be more than is needed. |
| 2515 | int x = (int)x0 - padX; |
| 2516 | int w = (int)(x1 - x0 + 2*padX); |
| 2517 | int y = (int)y0 - padY; |
| 2518 | int h = (int)(y1 - y0 + 2*padY); |
| 2519 | |
| 2520 | Rectangle clipRect = new Rectangle(x,y,w,h); |
| 2521 | result = clipRect.intersection(imageRect); |
| 2522 | } catch (NoninvertibleTransformException nte) { |
| 2523 | // Worst case bounds are the bounds of the image. |
| 2524 | result = imageRect; |
| 2525 | } |
| 2526 | |
| 2527 | return result; |
| 2528 | } |
| 2529 | |
| 2530 | /** |
| 2531 | * Draws an image, applying a transform from image space into user space |
| 2532 | * before drawing. |
| 2533 | * The transformation from user space into device space is done with |
| 2534 | * the current transform in the Graphics2D. |
| 2535 | * The given transformation is applied to the image before the |
| 2536 | * transform attribute in the Graphics2D state is applied. |
| 2537 | * The rendering attributes applied include the clip, transform, |
| 2538 | * and composite attributes. Note that the result is |
| 2539 | * undefined, if the given transform is noninvertible. |
| 2540 | * @param img The image to be drawn. Does nothing if img is null. |
| 2541 | * @param xform The transformation from image space into user space. |
| 2542 | * @see #transform |
| 2543 | * @see #setTransform |
| 2544 | * @see #setComposite |
| 2545 | * @see #clip |
| 2546 | * @see #setClip |
| 2547 | */ |
| 2548 | public void drawRenderedImage(RenderedImage img, |
| 2549 | AffineTransform xform) { |
| 2550 | |
| 2551 | if (img == null) { |
| 2552 | return; |
| 2553 | } |
| 2554 | |
| 2555 | // BufferedImage case: use a simple drawImage call |
| 2556 | if (img instanceof BufferedImage) { |
| 2557 | BufferedImage bufImg = (BufferedImage)img; |
| 2558 | drawImage(bufImg,xform,null); |
| 2559 | return; |
| 2560 | } |
| 2561 | |
| 2562 | // transformState tracks the state of transform and |
| 2563 | // transX, transY contain the integer casts of the |
| 2564 | // translation factors |
| 2565 | boolean isIntegerTranslate = |
| 2566 | (transformState <= TRANSFORM_INT_TRANSLATE) && |
| 2567 | isIntegerTranslation(xform); |
| 2568 | |
| 2569 | // Include padding for interpolation/antialiasing if necessary |
| 2570 | int pad = isIntegerTranslate ? 0 : 3; |
| 2571 | |
| 2572 | // Determine the region of the image that may contribute to |
| 2573 | // the clipped drawing area |
| 2574 | Rectangle region = getImageRegion(img, |
| 2575 | getCompClip(), |
| 2576 | transform, |
| 2577 | xform, |
| 2578 | pad, pad); |
| 2579 | if (region.width <= 0 || region.height <= 0) { |
| 2580 | return; |
| 2581 | } |
| 2582 | |
| 2583 | // Attempt to optimize integer translation of tiled images. |
| 2584 | // Although theoretically we are O.K. if the concatenation of |
| 2585 | // the user transform and the device transform is an integer |
| 2586 | // translation, we'll play it safe and only optimize the case |
| 2587 | // where both are integer translations. |
| 2588 | if (isIntegerTranslate) { |
| 2589 | // Use optimized code |
| 2590 | // Note that drawTranslatedRenderedImage calls copyImage |
| 2591 | // which takes the user space to device space transform into |
| 2592 | // account, but we need to provide the image space to user space |
| 2593 | // translations. |
| 2594 | |
| 2595 | drawTranslatedRenderedImage(img, region, |
| 2596 | (int) xform.getTranslateX(), |
| 2597 | (int) xform.getTranslateY()); |
| 2598 | return; |
| 2599 | } |
| 2600 | |
| 2601 | // General case: cobble the necessary region into a single Raster |
| 2602 | Raster raster = img.getData(region); |
| 2603 | |
| 2604 | // Make a new Raster with the same contents as raster |
| 2605 | // but starting at (0, 0). This raster is thus in the same |
| 2606 | // coordinate system as the SampleModel of the original raster. |
| 2607 | WritableRaster wRaster = |
| 2608 | Raster.createWritableRaster(raster.getSampleModel(), |
| 2609 | raster.getDataBuffer(), |
| 2610 | null); |
| 2611 | |
| 2612 | // If the original raster was in a different coordinate |
| 2613 | // system than its SampleModel, we need to perform an |
| 2614 | // additional translation in order to get the (minX, minY) |
| 2615 | // pixel of raster to be pixel (0, 0) of wRaster. We also |
| 2616 | // have to have the correct width and height. |
| 2617 | int minX = raster.getMinX(); |
| 2618 | int minY = raster.getMinY(); |
| 2619 | int width = raster.getWidth(); |
| 2620 | int height = raster.getHeight(); |
| 2621 | int px = minX - raster.getSampleModelTranslateX(); |
| 2622 | int py = minY - raster.getSampleModelTranslateY(); |
| 2623 | if (px != 0 || py != 0 || width != wRaster.getWidth() || |
| 2624 | height != wRaster.getHeight()) { |
| 2625 | wRaster = |
| 2626 | wRaster.createWritableChild(px, |
| 2627 | py, |
| 2628 | width, |
| 2629 | height, |
| 2630 | 0, 0, |
| 2631 | null); |
| 2632 | } |
| 2633 | |
| 2634 | // Now we have a BufferedImage starting at (0, 0) |
| 2635 | // with the same contents that started at (minX, minY) |
| 2636 | // in raster. So we must draw the BufferedImage with a |
| 2637 | // translation of (minX, minY). |
| 2638 | AffineTransform transXform = (AffineTransform)xform.clone(); |
| 2639 | transXform.translate(minX, minY); |
| 2640 | |
| 2641 | ColorModel cm = img.getColorModel(); |
| 2642 | BufferedImage bufImg = new BufferedImage(cm, |
| 2643 | wRaster, |
| 2644 | cm.isAlphaPremultiplied(), |
| 2645 | null); |
| 2646 | drawImage(bufImg, transXform, null); |
| 2647 | } |
| 2648 | |
| 2649 | /** |
| 2650 | * Intersects <code>destRect</code> with <code>clip</code> and |
| 2651 | * overwrites <code>destRect</code> with the result. |
| 2652 | * Returns false if the intersection was empty, true otherwise. |
| 2653 | */ |
| 2654 | private boolean clipTo(Rectangle destRect, Rectangle clip) { |
| 2655 | int x1 = Math.max(destRect.x, clip.x); |
| 2656 | int x2 = Math.min(destRect.x + destRect.width, clip.x + clip.width); |
| 2657 | int y1 = Math.max(destRect.y, clip.y); |
| 2658 | int y2 = Math.min(destRect.y + destRect.height, clip.y + clip.height); |
| 2659 | if (((x2 - x1) < 0) || ((y2 - y1) < 0)) { |
| 2660 | destRect.width = -1; // Set both just to be safe |
| 2661 | destRect.height = -1; |
| 2662 | return false; |
| 2663 | } else { |
| 2664 | destRect.x = x1; |
| 2665 | destRect.y = y1; |
| 2666 | destRect.width = x2 - x1; |
| 2667 | destRect.height = y2 - y1; |
| 2668 | return true; |
| 2669 | } |
| 2670 | } |
| 2671 | |
| 2672 | /** |
| 2673 | * Draw a portion of a RenderedImage tile-by-tile with a given |
| 2674 | * integer image to user space translation. The user to |
| 2675 | * device transform must also be an integer translation. |
| 2676 | */ |
| 2677 | private void drawTranslatedRenderedImage(RenderedImage img, |
| 2678 | Rectangle region, |
| 2679 | int i2uTransX, |
| 2680 | int i2uTransY) { |
| 2681 | // Cache tile grid info |
| 2682 | int tileGridXOffset = img.getTileGridXOffset(); |
| 2683 | int tileGridYOffset = img.getTileGridYOffset(); |
| 2684 | int tileWidth = img.getTileWidth(); |
| 2685 | int tileHeight = img.getTileHeight(); |
| 2686 | |
| 2687 | // Determine the tile index extrema in each direction |
| 2688 | int minTileX = |
| 2689 | getTileIndex(region.x, tileGridXOffset, tileWidth); |
| 2690 | int minTileY = |
| 2691 | getTileIndex(region.y, tileGridYOffset, tileHeight); |
| 2692 | int maxTileX = |
| 2693 | getTileIndex(region.x + region.width - 1, |
| 2694 | tileGridXOffset, tileWidth); |
| 2695 | int maxTileY = |
| 2696 | getTileIndex(region.y + region.height - 1, |
| 2697 | tileGridYOffset, tileHeight); |
| 2698 | |
| 2699 | // Create a single ColorModel to use for all BufferedImages |
| 2700 | ColorModel colorModel = img.getColorModel(); |
| 2701 | |
| 2702 | // Reuse the same Rectangle for each iteration |
| 2703 | Rectangle tileRect = new Rectangle(); |
| 2704 | |
| 2705 | for (int ty = minTileY; ty <= maxTileY; ty++) { |
| 2706 | for (int tx = minTileX; tx <= maxTileX; tx++) { |
| 2707 | // Get the current tile. |
| 2708 | Raster raster = img.getTile(tx, ty); |
| 2709 | |
| 2710 | // Fill in tileRect with the tile bounds |
| 2711 | tileRect.x = tx*tileWidth + tileGridXOffset; |
| 2712 | tileRect.y = ty*tileHeight + tileGridYOffset; |
| 2713 | tileRect.width = tileWidth; |
| 2714 | tileRect.height = tileHeight; |
| 2715 | |
| 2716 | // Clip the tile against the image bounds and |
| 2717 | // backwards mapped clip region |
| 2718 | // The result can't be empty |
| 2719 | clipTo(tileRect, region); |
| 2720 | |
| 2721 | // Create a WritableRaster containing the tile |
| 2722 | WritableRaster wRaster = null; |
| 2723 | if (raster instanceof WritableRaster) { |
| 2724 | wRaster = (WritableRaster)raster; |
| 2725 | } else { |
| 2726 | // Create a WritableRaster in the same coordinate system |
| 2727 | // as the original raster. |
| 2728 | wRaster = |
| 2729 | Raster.createWritableRaster(raster.getSampleModel(), |
| 2730 | raster.getDataBuffer(), |
| 2731 | null); |
| 2732 | } |
| 2733 | |
| 2734 | // Translate wRaster to start at (0, 0) and to contain |
| 2735 | // only the relevent portion of the tile |
| 2736 | wRaster = wRaster.createWritableChild(tileRect.x, tileRect.y, |
| 2737 | tileRect.width, |
| 2738 | tileRect.height, |
| 2739 | 0, 0, |
| 2740 | null); |
| 2741 | |
| 2742 | // Wrap wRaster in a BufferedImage |
| 2743 | BufferedImage bufImg = |
| 2744 | new BufferedImage(colorModel, |
| 2745 | wRaster, |
| 2746 | colorModel.isAlphaPremultiplied(), |
| 2747 | null); |
| 2748 | // Now we have a BufferedImage starting at (0, 0) that |
| 2749 | // represents data from a Raster starting at |
| 2750 | // (tileRect.x, tileRect.y). Additionally, it needs |
| 2751 | // to be translated by (i2uTransX, i2uTransY). We call |
| 2752 | // copyImage to draw just the region of interest |
| 2753 | // without needing to create a child image. |
| 2754 | copyImage(bufImg, tileRect.x + i2uTransX, |
| 2755 | tileRect.y + i2uTransY, 0, 0, tileRect.width, |
| 2756 | tileRect.height, null, null); |
| 2757 | } |
| 2758 | } |
| 2759 | } |
| 2760 | |
| 2761 | public void drawRenderableImage(RenderableImage img, |
| 2762 | AffineTransform xform) { |
| 2763 | |
| 2764 | if (img == null) { |
| 2765 | return; |
| 2766 | } |
| 2767 | |
| 2768 | AffineTransform pipeTransform = transform; |
| 2769 | AffineTransform concatTransform = new AffineTransform(xform); |
| 2770 | concatTransform.concatenate(pipeTransform); |
| 2771 | AffineTransform reverseTransform; |
| 2772 | |
| 2773 | RenderContext rc = new RenderContext(concatTransform); |
| 2774 | |
| 2775 | try { |
| 2776 | reverseTransform = pipeTransform.createInverse(); |
| 2777 | } catch (NoninvertibleTransformException nte) { |
| 2778 | rc = new RenderContext(pipeTransform); |
| 2779 | reverseTransform = new AffineTransform(); |
| 2780 | } |
| 2781 | |
| 2782 | RenderedImage rendering = img.createRendering(rc); |
| 2783 | drawRenderedImage(rendering,reverseTransform); |
| 2784 | } |
| 2785 | |
| 2786 | |
| 2787 | |
| 2788 | /* |
| 2789 | * Transform the bounding box of the BufferedImage |
| 2790 | */ |
| 2791 | protected Rectangle transformBounds(Rectangle rect, |
| 2792 | AffineTransform tx) { |
| 2793 | if (tx.isIdentity()) { |
| 2794 | return rect; |
| 2795 | } |
| 2796 | |
| 2797 | Shape s = transformShape(tx, rect); |
| 2798 | return s.getBounds(); |
| 2799 | } |
| 2800 | |
| 2801 | // text rendering methods |
| 2802 | public void drawString(String str, int x, int y) { |
| 2803 | if (str == null) { |
| 2804 | throw new NullPointerException("String is null"); |
| 2805 | } |
| 2806 | |
| 2807 | if (font.hasLayoutAttributes()) { |
| 2808 | new TextLayout(str, font, getFontRenderContext()).draw(this, x, y); |
| 2809 | return; |
| 2810 | } |
| 2811 | |
| 2812 | try { |
| 2813 | textpipe.drawString(this, str, x, y); |
| 2814 | } catch (InvalidPipeException e) { |
| 2815 | revalidateAll(); |
| 2816 | try { |
| 2817 | textpipe.drawString(this, str, x, y); |
| 2818 | } catch (InvalidPipeException e2) { |
| 2819 | // Still catching the exception; we are not yet ready to |
| 2820 | // validate the surfaceData correctly. Fail for now and |
| 2821 | // try again next time around. |
| 2822 | } |
| 2823 | } finally { |
| 2824 | surfaceData.markDirty(); |
| 2825 | } |
| 2826 | } |
| 2827 | |
| 2828 | public void drawString(String str, float x, float y) { |
| 2829 | if (str == null) { |
| 2830 | throw new NullPointerException("String is null"); |
| 2831 | } |
| 2832 | |
| 2833 | if (font.hasLayoutAttributes()) { |
| 2834 | new TextLayout(str, font, getFontRenderContext()).draw(this, x, y); |
| 2835 | return; |
| 2836 | } |
| 2837 | |
| 2838 | try { |
| 2839 | textpipe.drawString(this, str, x, y); |
| 2840 | } catch (InvalidPipeException e) { |
| 2841 | revalidateAll(); |
| 2842 | try { |
| 2843 | textpipe.drawString(this, str, x, y); |
| 2844 | } catch (InvalidPipeException e2) { |
| 2845 | // Still catching the exception; we are not yet ready to |
| 2846 | // validate the surfaceData correctly. Fail for now and |
| 2847 | // try again next time around. |
| 2848 | } |
| 2849 | } finally { |
| 2850 | surfaceData.markDirty(); |
| 2851 | } |
| 2852 | } |
| 2853 | |
| 2854 | public void drawString(AttributedCharacterIterator iterator, |
| 2855 | int x, int y) { |
| 2856 | if (iterator == null) { |
| 2857 | throw new NullPointerException("AttributedCharacterIterator is null"); |
| 2858 | } |
| 2859 | TextLayout tl = new TextLayout(iterator, getFontRenderContext()); |
| 2860 | tl.draw(this, (float) x, (float) y); |
| 2861 | } |
| 2862 | |
| 2863 | public void drawString(AttributedCharacterIterator iterator, |
| 2864 | float x, float y) { |
| 2865 | if (iterator == null) { |
| 2866 | throw new NullPointerException("AttributedCharacterIterator is null"); |
| 2867 | } |
| 2868 | TextLayout tl = new TextLayout(iterator, getFontRenderContext()); |
| 2869 | tl.draw(this, x, y); |
| 2870 | } |
| 2871 | |
| 2872 | public void drawGlyphVector(GlyphVector gv, float x, float y) |
| 2873 | { |
| 2874 | if (gv == null) { |
| 2875 | throw new NullPointerException("GlyphVector is null"); |
| 2876 | } |
| 2877 | |
| 2878 | try { |
| 2879 | textpipe.drawGlyphVector(this, gv, x, y); |
| 2880 | } catch (InvalidPipeException e) { |
| 2881 | revalidateAll(); |
| 2882 | try { |
| 2883 | textpipe.drawGlyphVector(this, gv, x, y); |
| 2884 | } catch (InvalidPipeException e2) { |
| 2885 | // Still catching the exception; we are not yet ready to |
| 2886 | // validate the surfaceData correctly. Fail for now and |
| 2887 | // try again next time around. |
| 2888 | } |
| 2889 | } finally { |
| 2890 | surfaceData.markDirty(); |
| 2891 | } |
| 2892 | } |
| 2893 | |
| 2894 | public void drawChars(char data[], int offset, int length, int x, int y) { |
| 2895 | |
| 2896 | if (data == null) { |
| 2897 | throw new NullPointerException("char data is null"); |
| 2898 | } |
| 2899 | if (offset < 0 || length < 0 || offset + length > data.length) { |
| 2900 | throw new ArrayIndexOutOfBoundsException("bad offset/length"); |
| 2901 | } |
| 2902 | if (font.hasLayoutAttributes()) { |
| 2903 | new TextLayout(new String(data, offset, length), |
| 2904 | font, getFontRenderContext()).draw(this, x, y); |
| 2905 | return; |
| 2906 | } |
| 2907 | |
| 2908 | try { |
| 2909 | textpipe.drawChars(this, data, offset, length, x, y); |
| 2910 | } catch (InvalidPipeException e) { |
| 2911 | revalidateAll(); |
| 2912 | try { |
| 2913 | textpipe.drawChars(this, data, offset, length, x, y); |
| 2914 | } catch (InvalidPipeException e2) { |
| 2915 | // Still catching the exception; we are not yet ready to |
| 2916 | // validate the surfaceData correctly. Fail for now and |
| 2917 | // try again next time around. |
| 2918 | } |
| 2919 | } finally { |
| 2920 | surfaceData.markDirty(); |
| 2921 | } |
| 2922 | } |
| 2923 | |
| 2924 | public void drawBytes(byte data[], int offset, int length, int x, int y) { |
| 2925 | if (data == null) { |
| 2926 | throw new NullPointerException("byte data is null"); |
| 2927 | } |
| 2928 | if (offset < 0 || length < 0 || offset + length > data.length) { |
| 2929 | throw new ArrayIndexOutOfBoundsException("bad offset/length"); |
| 2930 | } |
| 2931 | /* Byte data is interpreted as 8-bit ASCII. Re-use drawChars loops */ |
| 2932 | char chData[] = new char[length]; |
| 2933 | for (int i = length; i-- > 0; ) { |
| 2934 | chData[i] = (char)(data[i+offset] & 0xff); |
| 2935 | } |
| 2936 | if (font.hasLayoutAttributes()) { |
| 2937 | new TextLayout(new String(chData), |
| 2938 | font, getFontRenderContext()).draw(this, x, y); |
| 2939 | return; |
| 2940 | } |
| 2941 | |
| 2942 | try { |
| 2943 | textpipe.drawChars(this, chData, 0, length, x, y); |
| 2944 | } catch (InvalidPipeException e) { |
| 2945 | revalidateAll(); |
| 2946 | try { |
| 2947 | textpipe.drawChars(this, chData, 0, length, x, y); |
| 2948 | } catch (InvalidPipeException e2) { |
| 2949 | // Still catching the exception; we are not yet ready to |
| 2950 | // validate the surfaceData correctly. Fail for now and |
| 2951 | // try again next time around. |
| 2952 | } |
| 2953 | } finally { |
| 2954 | surfaceData.markDirty(); |
| 2955 | } |
| 2956 | } |
| 2957 | // end of text rendering methods |
| 2958 | |
| 2959 | /** |
| 2960 | * Draws an image scaled to x,y,w,h in nonblocking mode with a |
| 2961 | * callback object. |
| 2962 | */ |
| 2963 | public boolean drawImage(Image img, int x, int y, int width, int height, |
| 2964 | ImageObserver observer) { |
| 2965 | return drawImage(img, x, y, width, height, null, observer); |
| 2966 | } |
| 2967 | |
| 2968 | /** |
| 2969 | * Not part of the advertised API but a useful utility method |
| 2970 | * to call internally. This is for the case where we are |
| 2971 | * drawing to/from given coordinates using a given width/height, |
| 2972 | * but we guarantee that the weidth/height of the src and dest |
| 2973 | * areas are equal (no scale needed). |
| 2974 | */ |
| 2975 | public boolean copyImage(Image img, int dx, int dy, int sx, int sy, |
| 2976 | int width, int height, Color bgcolor, |
| 2977 | ImageObserver observer) { |
| 2978 | try { |
| 2979 | return imagepipe.copyImage(this, img, dx, dy, sx, sy, |
| 2980 | width, height, bgcolor, observer); |
| 2981 | } catch (InvalidPipeException e) { |
| 2982 | revalidateAll(); |
| 2983 | try { |
| 2984 | return imagepipe.copyImage(this, img, dx, dy, sx, sy, |
| 2985 | width, height, bgcolor, observer); |
| 2986 | } catch (InvalidPipeException e2) { |
| 2987 | // Still catching the exception; we are not yet ready to |
| 2988 | // validate the surfaceData correctly. Fail for now and |
| 2989 | // try again next time around. |
| 2990 | return false; |
| 2991 | } |
| 2992 | } finally { |
| 2993 | surfaceData.markDirty(); |
| 2994 | } |
| 2995 | } |
| 2996 | |
| 2997 | /** |
| 2998 | * Draws an image scaled to x,y,w,h in nonblocking mode with a |
| 2999 | * solid background color and a callback object. |
| 3000 | */ |
| 3001 | public boolean drawImage(Image img, int x, int y, int width, int height, |
| 3002 | Color bg, ImageObserver observer) { |
| 3003 | |
| 3004 | if (img == null) { |
| 3005 | return true; |
| 3006 | } |
| 3007 | |
| 3008 | if ((width == 0) || (height == 0)) { |
| 3009 | return true; |
| 3010 | } |
| 3011 | if (width == img.getWidth(null) && height == img.getHeight(null)) { |
| 3012 | return copyImage(img, x, y, 0, 0, width, height, bg, observer); |
| 3013 | } |
| 3014 | |
| 3015 | try { |
| 3016 | return imagepipe.scaleImage(this, img, x, y, width, height, |
| 3017 | bg, observer); |
| 3018 | } catch (InvalidPipeException e) { |
| 3019 | revalidateAll(); |
| 3020 | try { |
| 3021 | return imagepipe.scaleImage(this, img, x, y, width, height, |
| 3022 | bg, observer); |
| 3023 | } catch (InvalidPipeException e2) { |
| 3024 | // Still catching the exception; we are not yet ready to |
| 3025 | // validate the surfaceData correctly. Fail for now and |
| 3026 | // try again next time around. |
| 3027 | return false; |
| 3028 | } |
| 3029 | } finally { |
| 3030 | surfaceData.markDirty(); |
| 3031 | } |
| 3032 | } |
| 3033 | |
| 3034 | /** |
| 3035 | * Draws an image at x,y in nonblocking mode. |
| 3036 | */ |
| 3037 | public boolean drawImage(Image img, int x, int y, ImageObserver observer) { |
| 3038 | return drawImage(img, x, y, null, observer); |
| 3039 | } |
| 3040 | |
| 3041 | /** |
| 3042 | * Draws an image at x,y in nonblocking mode with a solid background |
| 3043 | * color and a callback object. |
| 3044 | */ |
| 3045 | public boolean drawImage(Image img, int x, int y, Color bg, |
| 3046 | ImageObserver observer) { |
| 3047 | |
| 3048 | if (img == null) { |
| 3049 | return true; |
| 3050 | } |
| 3051 | |
| 3052 | try { |
| 3053 | return imagepipe.copyImage(this, img, x, y, bg, observer); |
| 3054 | } catch (InvalidPipeException e) { |
| 3055 | revalidateAll(); |
| 3056 | try { |
| 3057 | return imagepipe.copyImage(this, img, x, y, bg, observer); |
| 3058 | } catch (InvalidPipeException e2) { |
| 3059 | // Still catching the exception; we are not yet ready to |
| 3060 | // validate the surfaceData correctly. Fail for now and |
| 3061 | // try again next time around. |
| 3062 | return false; |
| 3063 | } |
| 3064 | } finally { |
| 3065 | surfaceData.markDirty(); |
| 3066 | } |
| 3067 | } |
| 3068 | |
| 3069 | /** |
| 3070 | * Draws a subrectangle of an image scaled to a destination rectangle |
| 3071 | * in nonblocking mode with a callback object. |
| 3072 | */ |
| 3073 | public boolean drawImage(Image img, |
| 3074 | int dx1, int dy1, int dx2, int dy2, |
| 3075 | int sx1, int sy1, int sx2, int sy2, |
| 3076 | ImageObserver observer) { |
| 3077 | return drawImage(img, dx1, dy1, dx2, dy2, sx1, sy1, sx2, sy2, null, |
| 3078 | observer); |
| 3079 | } |
| 3080 | |
| 3081 | /** |
| 3082 | * Draws a subrectangle of an image scaled to a destination rectangle in |
| 3083 | * nonblocking mode with a solid background color and a callback object. |
| 3084 | */ |
| 3085 | public boolean drawImage(Image img, |
| 3086 | int dx1, int dy1, int dx2, int dy2, |
| 3087 | int sx1, int sy1, int sx2, int sy2, |
| 3088 | Color bgcolor, ImageObserver observer) { |
| 3089 | |
| 3090 | if (img == null) { |
| 3091 | return true; |
| 3092 | } |
| 3093 | |
| 3094 | if (dx1 == dx2 || dy1 == dy2 || |
| 3095 | sx1 == sx2 || sy1 == sy2) |
| 3096 | { |
| 3097 | return true; |
| 3098 | } |
| 3099 | |
| 3100 | if (((sx2 - sx1) == (dx2 - dx1)) && |
| 3101 | ((sy2 - sy1) == (dy2 - dy1))) |
| 3102 | { |
| 3103 | // Not a scale - forward it to a copy routine |
| 3104 | int srcX, srcY, dstX, dstY, width, height; |
| 3105 | if (sx2 > sx1) { |
| 3106 | width = sx2 - sx1; |
| 3107 | srcX = sx1; |
| 3108 | dstX = dx1; |
| 3109 | } else { |
| 3110 | width = sx1 - sx2; |
| 3111 | srcX = sx2; |
| 3112 | dstX = dx2; |
| 3113 | } |
| 3114 | if (sy2 > sy1) { |
| 3115 | height = sy2-sy1; |
| 3116 | srcY = sy1; |
| 3117 | dstY = dy1; |
| 3118 | } else { |
| 3119 | height = sy1-sy2; |
| 3120 | srcY = sy2; |
| 3121 | dstY = dy2; |
| 3122 | } |
| 3123 | return copyImage(img, dstX, dstY, srcX, srcY, |
| 3124 | width, height, bgcolor, observer); |
| 3125 | } |
| 3126 | |
| 3127 | try { |
| 3128 | return imagepipe.scaleImage(this, img, dx1, dy1, dx2, dy2, |
| 3129 | sx1, sy1, sx2, sy2, bgcolor, |
| 3130 | observer); |
| 3131 | } catch (InvalidPipeException e) { |
| 3132 | revalidateAll(); |
| 3133 | try { |
| 3134 | return imagepipe.scaleImage(this, img, dx1, dy1, dx2, dy2, |
| 3135 | sx1, sy1, sx2, sy2, bgcolor, |
| 3136 | observer); |
| 3137 | } catch (InvalidPipeException e2) { |
| 3138 | // Still catching the exception; we are not yet ready to |
| 3139 | // validate the surfaceData correctly. Fail for now and |
| 3140 | // try again next time around. |
| 3141 | return false; |
| 3142 | } |
| 3143 | } finally { |
| 3144 | surfaceData.markDirty(); |
| 3145 | } |
| 3146 | } |
| 3147 | |
| 3148 | /** |
| 3149 | * Draw an image, applying a transform from image space into user space |
| 3150 | * before drawing. |
| 3151 | * The transformation from user space into device space is done with |
| 3152 | * the current transform in the Graphics2D. |
| 3153 | * The given transformation is applied to the image before the |
| 3154 | * transform attribute in the Graphics2D state is applied. |
| 3155 | * The rendering attributes applied include the clip, transform, |
| 3156 | * paint or color and composite attributes. Note that the result is |
| 3157 | * undefined, if the given transform is non-invertible. |
| 3158 | * @param img The image to be drawn. |
| 3159 | * @param xform The transformation from image space into user space. |
| 3160 | * @param observer The image observer to be notified on the image producing |
| 3161 | * progress. |
| 3162 | * @see #transform |
| 3163 | * @see #setComposite |
| 3164 | * @see #setClip |
| 3165 | */ |
| 3166 | public boolean drawImage(Image img, |
| 3167 | AffineTransform xform, |
| 3168 | ImageObserver observer) { |
| 3169 | |
| 3170 | if (img == null) { |
| 3171 | return true; |
| 3172 | } |
| 3173 | |
| 3174 | if (xform == null || xform.isIdentity()) { |
| 3175 | return drawImage(img, 0, 0, null, observer); |
| 3176 | } |
| 3177 | |
| 3178 | try { |
| 3179 | return imagepipe.transformImage(this, img, xform, observer); |
| 3180 | } catch (InvalidPipeException e) { |
| 3181 | revalidateAll(); |
| 3182 | try { |
| 3183 | return imagepipe.transformImage(this, img, xform, observer); |
| 3184 | } catch (InvalidPipeException e2) { |
| 3185 | // Still catching the exception; we are not yet ready to |
| 3186 | // validate the surfaceData correctly. Fail for now and |
| 3187 | // try again next time around. |
| 3188 | return false; |
| 3189 | } |
| 3190 | } finally { |
| 3191 | surfaceData.markDirty(); |
| 3192 | } |
| 3193 | } |
| 3194 | |
| 3195 | public void drawImage(BufferedImage bImg, |
| 3196 | BufferedImageOp op, |
| 3197 | int x, |
| 3198 | int y) { |
| 3199 | |
| 3200 | if (bImg == null) { |
| 3201 | return; |
| 3202 | } |
| 3203 | |
| 3204 | try { |
| 3205 | imagepipe.transformImage(this, bImg, op, x, y); |
| 3206 | } catch (InvalidPipeException e) { |
| 3207 | revalidateAll(); |
| 3208 | try { |
| 3209 | imagepipe.transformImage(this, bImg, op, x, y); |
| 3210 | } catch (InvalidPipeException e2) { |
| 3211 | // Still catching the exception; we are not yet ready to |
| 3212 | // validate the surfaceData correctly. Fail for now and |
| 3213 | // try again next time around. |
| 3214 | } |
| 3215 | } finally { |
| 3216 | surfaceData.markDirty(); |
| 3217 | } |
| 3218 | } |
| 3219 | |
| 3220 | /** |
| 3221 | * Get the rendering context of the font |
| 3222 | * within this Graphics2D context. |
| 3223 | */ |
| 3224 | public FontRenderContext getFontRenderContext() { |
| 3225 | if (cachedFRC == null) { |
| 3226 | int aahint = textAntialiasHint; |
| 3227 | if (aahint == SunHints.INTVAL_TEXT_ANTIALIAS_DEFAULT && |
| 3228 | antialiasHint == SunHints.INTVAL_ANTIALIAS_ON) { |
| 3229 | aahint = SunHints.INTVAL_TEXT_ANTIALIAS_ON; |
| 3230 | } |
| 3231 | // Translation components should be excluded from the FRC transform |
| 3232 | AffineTransform tx = null; |
| 3233 | if (transformState >= TRANSFORM_TRANSLATESCALE) { |
| 3234 | if (transform.getTranslateX() == 0 && |
| 3235 | transform.getTranslateY() == 0) { |
| 3236 | tx = transform; |
| 3237 | } else { |
| 3238 | tx = new AffineTransform(transform.getScaleX(), |
| 3239 | transform.getShearY(), |
| 3240 | transform.getShearX(), |
| 3241 | transform.getScaleY(), |
| 3242 | 0, 0); |
| 3243 | } |
| 3244 | } |
| 3245 | cachedFRC = new FontRenderContext(tx, |
| 3246 | SunHints.Value.get(SunHints.INTKEY_TEXT_ANTIALIASING, aahint), |
| 3247 | SunHints.Value.get(SunHints.INTKEY_FRACTIONALMETRICS, |
| 3248 | fractionalMetricsHint)); |
| 3249 | } |
| 3250 | return cachedFRC; |
| 3251 | } |
| 3252 | private FontRenderContext cachedFRC; |
| 3253 | |
| 3254 | /** |
| 3255 | * This object has no resources to dispose of per se, but the |
| 3256 | * doc comments for the base method in java.awt.Graphics imply |
| 3257 | * that this object will not be useable after it is disposed. |
| 3258 | * So, we sabotage the object to prevent further use to prevent |
| 3259 | * developers from relying on behavior that may not work on |
| 3260 | * other, less forgiving, VMs that really need to dispose of |
| 3261 | * resources. |
| 3262 | */ |
| 3263 | public void dispose() { |
| 3264 | surfaceData = NullSurfaceData.theInstance; |
| 3265 | invalidatePipe(); |
| 3266 | } |
| 3267 | |
| 3268 | /** |
| 3269 | * Graphics has a finalize method that automatically calls dispose() |
| 3270 | * for subclasses. For SunGraphics2D we do not need to be finalized |
| 3271 | * so that method simply causes us to be enqueued on the Finalizer |
| 3272 | * queues for no good reason. Unfortunately, that method and |
| 3273 | * implementation are now considered part of the public contract |
| 3274 | * of that base class so we can not remove or gut the method. |
| 3275 | * We override it here with an empty method and the VM is smart |
| 3276 | * enough to know that if our override is empty then it should not |
| 3277 | * mark us as finalizeable. |
| 3278 | */ |
| 3279 | public void finalize() { |
| 3280 | // DO NOT REMOVE THIS METHOD |
| 3281 | } |
| 3282 | |
| 3283 | /** |
| 3284 | * Returns destination that this Graphics renders to. This could be |
| 3285 | * either an Image or a Component; subclasses of SurfaceData are |
| 3286 | * responsible for returning the appropriate object. |
| 3287 | */ |
| 3288 | public Object getDestination() { |
| 3289 | return surfaceData.getDestination(); |
| 3290 | } |
| 3291 | } |