1 /*
2 * Copyright (c) 2012, 2013, Oracle and/or its affiliates. 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package com.sun.javafx.sg.prism;
27
28 import javafx.geometry.VPos;
29 import javafx.scene.text.Font;
30 import java.nio.IntBuffer;
31 import java.util.concurrent.ExecutionException;
32 import java.util.concurrent.FutureTask;
33 import java.util.LinkedList;
34 import com.sun.javafx.font.PGFont;
35 import com.sun.javafx.geom.Arc2D;
36 import com.sun.javafx.geom.BaseBounds;
37 import com.sun.javafx.geom.DirtyRegionContainer;
38 import com.sun.javafx.geom.DirtyRegionPool;
39 import com.sun.javafx.geom.Path2D;
40 import com.sun.javafx.geom.PathIterator;
41 import com.sun.javafx.geom.RectBounds;
42 import com.sun.javafx.geom.Rectangle;
43 import com.sun.javafx.geom.Shape;
44 import com.sun.javafx.geom.transform.Affine2D;
45 import com.sun.javafx.geom.transform.BaseTransform;
46 import com.sun.javafx.geom.transform.NoninvertibleTransformException;
47 import com.sun.javafx.text.PrismTextLayout;
48 import com.sun.javafx.tk.RenderJob;
49 import com.sun.javafx.tk.Toolkit;
50 import com.sun.prism.BasicStroke;
51 import com.sun.prism.CompositeMode;
52 import com.sun.prism.Graphics;
53 import com.sun.prism.GraphicsPipeline;
54 import com.sun.prism.Image;
55 import com.sun.prism.PrinterGraphics;
56 import com.sun.prism.RTTexture;
57 import com.sun.prism.ResourceFactory;
58 import com.sun.prism.Texture;
59 import com.sun.prism.Texture.WrapMode;
60 import com.sun.prism.paint.Color;
61 import com.sun.prism.paint.Paint;
62 import com.sun.scenario.effect.Blend;
63 import com.sun.scenario.effect.Blend.Mode;
64 import com.sun.scenario.effect.Effect;
65 import com.sun.scenario.effect.FilterContext;
66 import com.sun.scenario.effect.Filterable;
67 import com.sun.scenario.effect.ImageData;
68 import com.sun.scenario.effect.impl.prism.PrDrawable;
69 import com.sun.scenario.effect.impl.prism.PrFilterContext;
70 import com.sun.scenario.effect.impl.prism.PrTexture;
71
72 /**
73 */
74 public class NGCanvas extends NGNode {
75 public static final byte ATTR_BASE = 0;
76 public static final byte GLOBAL_ALPHA = ATTR_BASE + 0;
77 public static final byte COMP_MODE = ATTR_BASE + 1;
78 public static final byte FILL_PAINT = ATTR_BASE + 2;
79 public static final byte STROKE_PAINT = ATTR_BASE + 3;
80 public static final byte LINE_WIDTH = ATTR_BASE + 4;
81 public static final byte LINE_CAP = ATTR_BASE + 5;
82 public static final byte LINE_JOIN = ATTR_BASE + 6;
83 public static final byte MITER_LIMIT = ATTR_BASE + 7;
84 public static final byte FONT = ATTR_BASE + 8;
85 public static final byte TEXT_ALIGN = ATTR_BASE + 9;
86 public static final byte TEXT_BASELINE = ATTR_BASE + 10;
87 public static final byte TRANSFORM = ATTR_BASE + 11;
88 public static final byte EFFECT = ATTR_BASE + 12;
89 public static final byte PUSH_CLIP = ATTR_BASE + 13;
90 public static final byte POP_CLIP = ATTR_BASE + 14;
91 public static final byte ARC_TYPE = ATTR_BASE + 15;
92 public static final byte FILL_RULE = ATTR_BASE + 16;
93
94 public static final byte OP_BASE = 20;
95 public static final byte FILL_RECT = OP_BASE + 0;
96 public static final byte STROKE_RECT = OP_BASE + 1;
97 public static final byte CLEAR_RECT = OP_BASE + 2;
98 public static final byte STROKE_LINE = OP_BASE + 3;
99 public static final byte FILL_OVAL = OP_BASE + 4;
100 public static final byte STROKE_OVAL = OP_BASE + 5;
101 public static final byte FILL_ROUND_RECT = OP_BASE + 6;
102 public static final byte STROKE_ROUND_RECT = OP_BASE + 7;
103 public static final byte FILL_ARC = OP_BASE + 8;
104 public static final byte STROKE_ARC = OP_BASE + 9;
105 public static final byte FILL_TEXT = OP_BASE + 10;
106 public static final byte STROKE_TEXT = OP_BASE + 11;
107
108 public static final byte PATH_BASE = 40;
109 public static final byte PATHSTART = PATH_BASE + 0;
110 public static final byte MOVETO = PATH_BASE + 1;
111 public static final byte LINETO = PATH_BASE + 2;
112 public static final byte QUADTO = PATH_BASE + 3;
113 public static final byte CUBICTO = PATH_BASE + 4;
114 public static final byte CLOSEPATH = PATH_BASE + 5;
115 public static final byte PATHEND = PATH_BASE + 6;
116 public static final byte FILL_PATH = PATH_BASE + 7;
117 public static final byte STROKE_PATH = PATH_BASE + 8;
118
119 public static final byte IMG_BASE = 50;
120 public static final byte DRAW_IMAGE = IMG_BASE + 0;
121 public static final byte DRAW_SUBIMAGE = IMG_BASE + 1;
122 public static final byte PUT_ARGB = IMG_BASE + 2;
123 public static final byte PUT_ARGBPRE_BUF = IMG_BASE + 3;
124
125 public static final byte FX_BASE = 60;
126 public static final byte FX_APPLY_EFFECT = FX_BASE + 0;
127
128 public static final byte UTIL_BASE = 70;
129 public static final byte RESET = UTIL_BASE + 0;
130 public static final byte SET_DIMS = UTIL_BASE + 1;
131
132 public static final byte CAP_BUTT = 0;
133 public static final byte CAP_ROUND = 1;
134 public static final byte CAP_SQUARE = 2;
135
136 public static final byte JOIN_MITER = 0;
137 public static final byte JOIN_ROUND = 1;
138 public static final byte JOIN_BEVEL = 2;
139
140 public static final byte ARC_OPEN = 0;
141 public static final byte ARC_CHORD = 1;
142 public static final byte ARC_PIE = 2;
143
144 public static final byte ALIGN_LEFT = 0;
145 public static final byte ALIGN_CENTER = 1;
146 public static final byte ALIGN_RIGHT = 2;
147 public static final byte ALIGN_JUSTIFY = 3;
148
149 public static final byte BASE_TOP = 0;
150 public static final byte BASE_MIDDLE = 1;
151 public static final byte BASE_ALPHABETIC = 2;
152 public static final byte BASE_BOTTOM = 3;
153
154 public static final byte FILL_RULE_NON_ZERO = 0;
155 public static final byte FILL_RULE_EVEN_ODD = 1;
156
157 static enum InitType {
158 CLEAR,
159 FILL_WHITE,
160 PRESERVE_UPPER_LEFT
161 }
162
163 static class RenderBuf {
164 final InitType init_type;
165 RTTexture tex;
166 Graphics g;
167 EffectInput input;
168 private PixelData savedPixelData = null;
169
170 public RenderBuf(InitType init_type) {
171 this.init_type = init_type;
172 }
173
174 public void dispose() {
175 if (tex != null) tex.dispose();
176
177 tex = null;
178 g = null;
179 input = null;
180 }
181
182 public boolean validate(Graphics resg, int tw, int th) {
183 int cw, ch;
184 boolean create;
185 if (tex == null) {
186 cw = ch = 0;
187 create = true;
188 } else {
189 cw = tex.getContentWidth();
190 ch = tex.getContentHeight();
191 tex.lock();
192 create = tex.isSurfaceLost() || cw < tw || ch < th;
193 }
194 if (create) {
195 RTTexture oldtex = tex;
196 ResourceFactory factory = (resg == null)
197 ? GraphicsPipeline.getDefaultResourceFactory()
198 : resg.getResourceFactory();
199 RTTexture newtex =
200 factory.createRTTexture(tw, th, WrapMode.CLAMP_TO_ZERO);
201 this.tex = newtex;
202 this.g = newtex.createGraphics();
203 this.input = new EffectInput(newtex);
204 if (oldtex != null) {
205 if (init_type == InitType.PRESERVE_UPPER_LEFT) {
206 g.setCompositeMode(CompositeMode.SRC);
207 if (oldtex.isSurfaceLost()) {
208 if (savedPixelData != null) {
209 savedPixelData.restore(g, cw, ch);
210 }
211 } else {
212 g.drawTexture(oldtex, 0, 0, cw, ch);
213 }
214 g.setCompositeMode(CompositeMode.SRC_OVER);
215 }
216 oldtex.unlock();
217 oldtex.dispose();
218 }
219 if (init_type == InitType.FILL_WHITE) {
220 g.setPaint(Color.WHITE);
221 g.fillRect(0, 0, tw, th);
222 }
223 return true;
224 } else {
225 if (this.g == null) {
226 this.g = tex.createGraphics();
227 if (this.g == null) {
228 tex.dispose();
229 ResourceFactory factory = (resg == null)
230 ? GraphicsPipeline.getDefaultResourceFactory()
231 : resg.getResourceFactory();
232 tex = factory.createRTTexture(tw, th, WrapMode.CLAMP_TO_ZERO);
233 this.g = tex.createGraphics();
234 this.input = new EffectInput(tex);
235 if (savedPixelData != null) {
236 g.setCompositeMode(CompositeMode.SRC);
237 savedPixelData.restore(g, tw, th);
238 g.setCompositeMode(CompositeMode.SRC_OVER);
239 } else if (init_type == InitType.FILL_WHITE) {
240 g.setPaint(Color.WHITE);
241 g.fillRect(0, 0, tw, th);
242 }
243 return true;
244 }
245 }
246 }
247 if (init_type == InitType.CLEAR) {
248 g.setCompositeMode(CompositeMode.CLEAR);
249 g.fillRect(0, 0, tw, th);
250 g.setCompositeMode(CompositeMode.SRC_OVER);
251 }
252 return false;
253 }
254
255 private void save(int tw, int th) {
256 if (tex.isVolatile()) {
257 if (savedPixelData == null) {
258 savedPixelData = new PixelData(tw, th);
259 }
260 savedPixelData.save(tex);
261 }
262 }
263 }
264
265 // Saved pixel data used to preserve the image that backs the canvas if the
266 // RTT is volatile.
267 private static class PixelData {
268 private IntBuffer pixels = null;
269 private boolean validPixels = false;
270 private int cw, ch;
271
272 private PixelData(int cw, int ch) {
273 this.cw = cw;
274 this.ch = ch;
275 pixels = IntBuffer.allocate(cw*ch);
276 }
277
278 private void save(RTTexture tex) {
279 int tw = tex.getContentWidth();
280 int th = tex.getContentHeight();
281 if (cw < tw || ch < th) {
282 cw = tw;
283 ch = th;
284 pixels = IntBuffer.allocate(cw*ch);
285 }
286 pixels.rewind();
287 tex.readPixels(pixels);
288 validPixels = true;
289 }
290
291 private void restore(Graphics g, int tw, int th) {
292 if (validPixels) {
293 Image img = Image.fromIntArgbPreData(pixels, tw, th);
294 ResourceFactory factory = g.getResourceFactory();
295 Texture tempTex =
296 factory.createTexture(img,
297 Texture.Usage.DEFAULT,
298 Texture.WrapMode.CLAMP_TO_EDGE);
299 g.drawTexture(tempTex, 0, 0, tw, th);
300 tempTex.dispose();
301 }
302 }
303 }
304
305 private static Blend BLENDER = new MyBlend(Mode.SRC_OVER, null, null);
306
307 private GrowableDataBuffer thebuf;
308
309 private int tw, th;
310 private int cw, ch;
311 private RenderBuf cv;
312 private RenderBuf temp;
313 private RenderBuf clip;
314
315 private float globalAlpha;
316 private Blend.Mode blendmode;
317 private Paint fillPaint, strokePaint;
318 private float linewidth;
319 private int linecap, linejoin;
320 private float miterlimit;
321 private BasicStroke stroke;
322 private Path2D path;
323 private NGText ngtext;
324 private PrismTextLayout textLayout;
325 private PGFont pgfont;
326 private int align;
327 private int baseline;
328 private Affine2D transform;
329 private Affine2D inverseTransform;
330 private boolean inversedirty;
331 private LinkedList<Path2D> clipStack;
332 private Effect effect;
333 private int arctype;
334
335 static float TEMP_COORDS[] = new float[6];
336 private static Arc2D TEMP_ARC = new Arc2D();
337 private static RectBounds TEMP_RECTBOUNDS = new RectBounds();
338
339 public NGCanvas() {
340 cv = new RenderBuf(InitType.PRESERVE_UPPER_LEFT);
341 temp = new RenderBuf(InitType.CLEAR);
342 clip = new RenderBuf(InitType.FILL_WHITE);
343
344 path = new Path2D();
345 ngtext = new NGText();
346 textLayout = new PrismTextLayout();
347 transform = new Affine2D();
348 clipStack = new LinkedList<Path2D>();
349 initAttributes();
350 }
351
352 private void initAttributes() {
353 globalAlpha = 1.0f;
354 blendmode = Mode.SRC_OVER;
355 fillPaint = Color.BLACK;
356 strokePaint = Color.BLACK;
357 linewidth = 1.0f;
358 linecap = BasicStroke.CAP_SQUARE;
359 linejoin = BasicStroke.JOIN_MITER;
360 miterlimit = 10f;
361 stroke = null;
362 path.setWindingRule(Path2D.WIND_NON_ZERO);
363 // ngtext stores no state between render operations
364 // textLayout stores no state between render operations
365 pgfont = (PGFont) Font.getDefault().impl_getNativeFont();
366 align = ALIGN_LEFT;
367 baseline = VPos.BASELINE.ordinal();
368 transform.setToScale(highestPixelScale, highestPixelScale);
369 clipStack.clear();
370 }
371
372 static final Affine2D TEMP_PATH_TX = new Affine2D();
373 static final int numCoords[] = { 2, 2, 4, 6, 0 };
374 Shape untransformedPath = new Shape() {
375
376 @Override
377 public RectBounds getBounds() {
378 if (transform.isTranslateOrIdentity()) {
379 RectBounds rb = path.getBounds();
380 if (transform.isIdentity()) {
381 return rb;
382 } else {
383 float tx = (float) transform.getMxt();
384 float ty = (float) transform.getMyt();
385 return new RectBounds(rb.getMinX() - tx, rb.getMinY() - ty,
386 rb.getMaxX() - tx, rb.getMaxY() - ty);
387 }
388 }
389 // We could use Shape.accumulate, but that method optimizes the
390 // bounds for curves and the optimized code above will simply ask
391 // the path for its bounds - which in this case of a Path2D would
392 // simply accumulate all of the coordinates in the buffer. So,
393 // we write a simpler accumulator loop here to be consistent with
394 // the optimized case above.
395 float x0 = Float.POSITIVE_INFINITY;
396 float y0 = Float.POSITIVE_INFINITY;
397 float x1 = Float.NEGATIVE_INFINITY;
398 float y1 = Float.NEGATIVE_INFINITY;
399 PathIterator pi = path.getPathIterator(getInverseTransform());
400 while (!pi.isDone()) {
401 int ncoords = numCoords[pi.currentSegment(TEMP_COORDS)];
402 for (int i = 0; i < ncoords; i += 2) {
403 if (x0 > TEMP_COORDS[i+0]) x0 = TEMP_COORDS[i+0];
404 if (x1 < TEMP_COORDS[i+0]) x1 = TEMP_COORDS[i+0];
405 if (y0 > TEMP_COORDS[i+1]) y0 = TEMP_COORDS[i+1];
406 if (y1 < TEMP_COORDS[i+1]) y1 = TEMP_COORDS[i+1];
407 }
408 pi.next();
409 }
410 return new RectBounds(x0, y0, x1, y1);
411 }
412
413 @Override
414 public boolean contains(float x, float y) {
415 TEMP_COORDS[0] = x;
416 TEMP_COORDS[1] = y;
417 transform.transform(TEMP_COORDS, 0, TEMP_COORDS, 0, 1);
418 x = TEMP_COORDS[0];
419 y = TEMP_COORDS[1];
420 return path.contains(x, y);
421 }
422
423 @Override
424 public boolean intersects(float x, float y, float w, float h) {
425 if (transform.isTranslateOrIdentity()) {
426 x += transform.getMxt();
427 y += transform.getMyt();
428 return path.intersects(x, y, w, h);
429 }
430 PathIterator pi = path.getPathIterator(getInverseTransform());
431 int crossings = Shape.rectCrossingsForPath(pi, x, y, x+w, y+h);
432 // int mask = (windingRule == WIND_NON_ZERO ? -1 : 2);
433 // return (crossings == Shape.RECT_INTERSECTS ||
434 // (crossings & mask) != 0);
435 // with wind == NON_ZERO, then mask == -1 and
436 // since REC_INTERSECTS != 0, we simplify to:
437 return (crossings != 0);
438 }
439
440 @Override
441 public boolean contains(float x, float y, float w, float h) {
442 if (transform.isTranslateOrIdentity()) {
443 x += transform.getMxt();
444 y += transform.getMyt();
445 return path.contains(x, y, w, h);
446 }
447 PathIterator pi = path.getPathIterator(getInverseTransform());
448 int crossings = Shape.rectCrossingsForPath(pi, x, y, x+w, y+h);
449 // int mask = (windingRule == WIND_NON_ZERO ? -1 : 2);
450 // return (crossings != Shape.RECT_INTERSECTS &&
451 // (crossings & mask) != 0);
452 // with wind == NON_ZERO, then mask == -1 we simplify to:
453 return (crossings != Shape.RECT_INTERSECTS && crossings != 0);
454 }
455
456 public BaseTransform getCombinedTransform(BaseTransform tx) {
457 if (transform.isIdentity()) return tx;
458 if (transform.equals(tx)) return null;
459 Affine2D inv = getInverseTransform();
460 if (tx == null || tx.isIdentity()) return inv;
461 TEMP_PATH_TX.setTransform(tx);
462 TEMP_PATH_TX.concatenate(inv);
463 return TEMP_PATH_TX;
464 }
465
466 @Override
467 public PathIterator getPathIterator(BaseTransform tx) {
468 return path.getPathIterator(getCombinedTransform(tx));
469 }
470
471 @Override
472 public PathIterator getPathIterator(BaseTransform tx, float flatness) {
473 return path.getPathIterator(getCombinedTransform(tx), flatness);
474 }
475
476 @Override
477 public Shape copy() {
478 throw new UnsupportedOperationException("Not supported yet.");
479 }
480 };
481
482 private Affine2D getInverseTransform() {
483 if (inverseTransform == null) {
484 inverseTransform = new Affine2D();
485 inversedirty = true;
486 }
487 if (inversedirty) {
488 inverseTransform.setTransform(transform);
489 try {
490 inverseTransform.invert();
491 } catch (NoninvertibleTransformException e) {
492 inverseTransform.setToScale(0, 0);
493 }
494 inversedirty = false;
495 }
496 return inverseTransform;
497 }
498
499 @Override
500 protected boolean hasOverlappingContents() {
501 return true;
502 }
503
504 private static void shapebounds(Shape shape, RectBounds bounds,
505 BaseTransform transform)
506 {
507 TEMP_COORDS[0] = TEMP_COORDS[1] = Float.POSITIVE_INFINITY;
508 TEMP_COORDS[2] = TEMP_COORDS[3] = Float.NEGATIVE_INFINITY;
509 Shape.accumulate(TEMP_COORDS, shape, transform);
510 bounds.setBounds(TEMP_COORDS[0], TEMP_COORDS[1],
511 TEMP_COORDS[2], TEMP_COORDS[3]);
512 }
513
514 private static void strokebounds(BasicStroke stroke, Shape shape,
515 RectBounds bounds, BaseTransform transform)
516 {
517 TEMP_COORDS[0] = TEMP_COORDS[1] = Float.POSITIVE_INFINITY;
518 TEMP_COORDS[2] = TEMP_COORDS[3] = Float.NEGATIVE_INFINITY;
519 stroke.accumulateShapeBounds(TEMP_COORDS, shape, transform);
520 bounds.setBounds(TEMP_COORDS[0], TEMP_COORDS[1],
521 TEMP_COORDS[2], TEMP_COORDS[3]);
522 }
523
524 private static void runOnRenderThread(final Runnable r) {
525 // We really need a standard mechanism to detect the render thread !
526 if (Thread.currentThread().getName().startsWith("QuantumRenderer")) {
527 r.run();
528 } else {
529 FutureTask<Void> f = new FutureTask<Void>(r, null);
530 Toolkit.getToolkit().addRenderJob(new RenderJob(f));
531 try {
532 // block until job is complete
533 f.get();
534 } catch (ExecutionException ex) {
535 throw new AssertionError(ex);
536 } catch (InterruptedException ex) {
537 // ignore; recovery is impossible
538 }
539 }
540 }
541
542 private boolean printedCanvas(Graphics g) {
543 final RTTexture localTex = cv.tex;
544 if (!(g instanceof PrinterGraphics) || localTex == null) {
545 return false;
546 }
547 ResourceFactory factory = g.getResourceFactory();
548 boolean isCompatTex = factory.isCompatibleTexture(localTex);
549 if (isCompatTex) {
550 return false;
551 }
552
553 final int tw = localTex.getContentWidth();
554 final int th = localTex.getContentHeight();
555 final RTTexture tmpTex =
556 factory.createRTTexture(tw, th, WrapMode.CLAMP_TO_ZERO);
557 final Graphics texg = tmpTex.createGraphics();
558 texg.setCompositeMode(CompositeMode.SRC);
559 if (cv.savedPixelData == null) {
560 final PixelData pd = new PixelData(cw, ch);
561 runOnRenderThread(() -> {
562 pd.save(localTex);
563 pd.restore(texg, tw, th);
564 });
565 } else {
566 cv.savedPixelData.restore(texg, tw, th);
567 }
568 g.drawTexture(tmpTex, 0, 0, tw, th);
569 tmpTex.unlock();
570 tmpTex.dispose();
571 return true;
572 }
573
574 @Override
575 protected void renderContent(Graphics g) {
576 if (printedCanvas(g)) return;
577 initCanvas(g);
578 if (cv.tex != null) {
579 if (thebuf != null) {
580 renderStream(thebuf);
581 GrowableDataBuffer.returnBuffer(thebuf);
582 thebuf = null;
583 }
584 float dw = tw / highestPixelScale;
585 float dh = th / highestPixelScale;
586 g.drawTexture(cv.tex,
587 0, 0, dw, dh,
588 0, 0, tw, th);
589 // Must save the pixels every frame if RTT is volatile.
590 cv.save(tw, th);
591 }
592 this.temp.g = this.clip.g = this.cv.g = null;
593 }
594
595 @Override
596 public void renderForcedContent(Graphics gOptional) {
597 if (thebuf != null) {
598 initCanvas(gOptional);
599 if (cv.tex != null) {
600 renderStream(thebuf);
601 GrowableDataBuffer.returnBuffer(thebuf);
602 thebuf = null;
603 cv.save(tw, th);
604 }
605 this.temp.g = this.clip.g = this.cv.g = null;
606 }
607 }
608
609 private void initCanvas(Graphics g) {
610 if (tw <= 0 || th <= 0) {
611 cv.dispose();
612 return;
613 }
614 if (cv.validate(g, tw, th)) {
615 // If the texture was recreated then we add a permanent
616 // "useful" and extra "lock" status to it.
617 cv.tex.contentsUseful();
618 cv.tex.makePermanent();
619 cv.tex.lock();
620 }
621 }
622
623 private void clearCanvas(int x, int y, int w, int h) {
624 cv.g.setCompositeMode(CompositeMode.SRC);
625 cv.g.setTransform(BaseTransform.IDENTITY_TRANSFORM);
626 cv.g.setPaint(Color.TRANSPARENT);
627 cv.g.fillRect(x, y, w, h);
628 cv.g.setCompositeMode(CompositeMode.SRC_OVER);
629 }
630
631 private void initClip() {
632 if (clip.validate(cv.g, tw, th)) {
633 clip.tex.contentsUseful();
634 for (Path2D clippath : clipStack) {
635 renderClip(clippath);
636 }
637 }
638 }
639
640 private void renderClip(Path2D clippath) {
641 temp.validate(cv.g, tw, th);
642 temp.g.setPaint(Color.WHITE);
643 temp.g.setTransform(BaseTransform.IDENTITY_TRANSFORM);
644 temp.g.fill(clippath);
645 blendAthruBintoC(temp, Mode.SRC_IN, clip, null, CompositeMode.SRC, clip);
646 temp.tex.unlock();
647 }
648
649 private Rectangle applyEffectOnAintoC(Effect definput,
650 Effect effect,
651 BaseTransform transform,
652 Rectangle outputClip,
653 CompositeMode comp,
654 RenderBuf destbuf)
655 {
656 FilterContext fctx =
657 PrFilterContext.getInstance(destbuf.tex.getAssociatedScreen());
658 ImageData id =
659 effect.filter(fctx, transform, outputClip, null, definput);
660 Rectangle r = id.getUntransformedBounds();
661 Filterable f = id.getUntransformedImage();
662 Texture tex = ((PrTexture) f).getTextureObject();
663 destbuf.g.setTransform(id.getTransform());
664 destbuf.g.setCompositeMode(comp);
665 destbuf.g.drawTexture(tex, r.x, r.y, r.width, r.height);
666 destbuf.g.setTransform(BaseTransform.IDENTITY_TRANSFORM);
667 destbuf.g.setCompositeMode(CompositeMode.SRC_OVER);
668 Rectangle resultBounds = id.getTransformedBounds(outputClip);
669 id.unref();
670 return resultBounds;
671 }
672
673 private void blendAthruBintoC(RenderBuf drawbuf,
674 Mode mode,
675 RenderBuf clipbuf,
676 RectBounds bounds,
677 CompositeMode comp,
678 RenderBuf destbuf)
679 {
680 BLENDER.setTopInput(drawbuf.input);
681 BLENDER.setBottomInput(clipbuf.input);
682 BLENDER.setMode(mode);
683 Rectangle blendclip;
684 if (bounds != null) {
685 blendclip = new Rectangle(bounds);
686 } else {
687 blendclip = null;
688 }
689 applyEffectOnAintoC(null, BLENDER,
690 BaseTransform.IDENTITY_TRANSFORM, blendclip,
691 comp, destbuf);
692 }
693
694 private void setupFill(Graphics gr) {
695 gr.setPaint(fillPaint);
696 }
697
698 private BasicStroke getStroke() {
699 if (stroke == null) {
700 stroke = new BasicStroke(linewidth, linecap, linejoin,
701 miterlimit);
702 }
703 return stroke;
704 }
705
706 private void setupStroke(Graphics gr) {
707 gr.setStroke(getStroke());
708 gr.setPaint(strokePaint);
709 }
710
711 private static final int prcaps[] = {
712 BasicStroke.CAP_BUTT,
713 BasicStroke.CAP_ROUND,
714 BasicStroke.CAP_SQUARE,
715 };
716 private static final int prjoins[] = {
717 BasicStroke.JOIN_MITER,
718 BasicStroke.JOIN_ROUND,
719 BasicStroke.JOIN_BEVEL,
720 };
721 private static final int prbases[] = {
722 VPos.TOP.ordinal(),
723 VPos.CENTER.ordinal(),
724 VPos.BASELINE.ordinal(),
725 VPos.BOTTOM.ordinal(),
726 };
727 private static final Affine2D TEMP_TX = new Affine2D();
728 private void renderStream(GrowableDataBuffer buf) {
729 while (buf.hasValues()) {
730 int token = buf.getByte();
731 switch (token) {
732 case RESET:
733 initAttributes();
734 // RESET is always followed by SET_DIMS
735 // Setting cwh = twh avoids unnecessary double clears
736 this.cw = this.tw;
737 this.ch = this.th;
738 clearCanvas(0, 0, this.tw, this.th);
739 break;
740 case SET_DIMS:
741 int neww = (int) Math.ceil(buf.getFloat() * highestPixelScale);
742 int newh = (int) Math.ceil(buf.getFloat() * highestPixelScale);
743 int clearx = Math.min(neww, this.cw);
744 int cleary = Math.min(newh, this.ch);
745 if (clearx < this.tw) {
746 // tw is set to the final width, we simulate all of
747 // the intermediate changes in size by making sure
748 // that all pixels outside of any size change are
749 // cleared at the stream point where they happened
750 clearCanvas(clearx, 0, this.tw-clearx, this.th);
751 }
752 if (cleary < this.th) {
753 // th is set to the final width, we simulate all of
754 // the intermediate changes in size by making sure
755 // that all pixels outside of any size change are
756 // cleared at the stream point where they happened
757 clearCanvas(0, cleary, this.tw, this.th-cleary);
758 }
759 this.cw = neww;
760 this.ch = newh;
761 break;
762 case PATHSTART:
763 path.reset();
764 break;
765 case MOVETO:
766 path.moveTo(buf.getFloat(), buf.getFloat());
767 break;
768 case LINETO:
769 path.lineTo(buf.getFloat(), buf.getFloat());
770 break;
771 case QUADTO:
772 path.quadTo(buf.getFloat(), buf.getFloat(),
773 buf.getFloat(), buf.getFloat());
774 break;
775 case CUBICTO:
776 path.curveTo(buf.getFloat(), buf.getFloat(),
777 buf.getFloat(), buf.getFloat(),
778 buf.getFloat(), buf.getFloat());
779 break;
780 case CLOSEPATH:
781 path.closePath();
782 break;
783 case PATHEND:
784 if (highestPixelScale != 1.0f) {
785 TEMP_TX.setToScale(highestPixelScale, highestPixelScale);
786 path.transform(TEMP_TX);
787 }
788 break;
789 case PUSH_CLIP:
790 {
791 Path2D clippath = (Path2D) buf.getObject();
792 if (highestPixelScale != 1.0f) {
793 TEMP_TX.setToScale(highestPixelScale, highestPixelScale);
794 clippath.transform(TEMP_TX);
795 }
796 initClip();
797 renderClip(clippath);
798 clip.tex.unlock();
799 clipStack.addLast(clippath);
800 break;
801 }
802 case POP_CLIP:
803 // Let it be recreated when next needed
804 clip.dispose();
805 clipStack.removeLast();
806 break;
807 case ARC_TYPE:
808 {
809 byte type = buf.getByte();
810 switch (type) {
811 case ARC_OPEN: arctype = Arc2D.OPEN; break;
812 case ARC_CHORD: arctype = Arc2D.CHORD; break;
813 case ARC_PIE: arctype = Arc2D.PIE; break;
814 }
815 break;
816 }
817 case PUT_ARGB:
818 {
819 float dx1 = buf.getInt();
820 float dy1 = buf.getInt();
821 int argb = buf.getInt();
822 Graphics gr = cv.g;
823 gr.setExtraAlpha(1.0f);
824 gr.setCompositeMode(CompositeMode.SRC);
825 gr.setTransform(BaseTransform.IDENTITY_TRANSFORM);
826 dx1 *= highestPixelScale;
827 dy1 *= highestPixelScale;
828 float a = ((argb) >>> 24) / 255.0f;
829 float r = (((argb) >> 16) & 0xff) / 255.0f;
830 float g = (((argb) >> 8) & 0xff) / 255.0f;
831 float b = (((argb) ) & 0xff) / 255.0f;
832 gr.setPaint(new Color(r, g, b, a));
833 // Note that we cannot use fillRect here because SRC
834 // mode does not interact well with antialiasing.
835 // fillQuad does hard edges which matches the concept
836 // of setting adjacent abutting, non-overlapping "pixels"
837 gr.fillQuad(dx1, dy1, dx1+highestPixelScale, dy1+highestPixelScale);
838 break;
839 }
840 case PUT_ARGBPRE_BUF:
841 {
842 float dx1 = buf.getInt();
843 float dy1 = buf.getInt();
844 int w = buf.getInt();
845 int h = buf.getInt();
846 byte[] data = (byte[]) buf.getObject();
847 Image img = Image.fromByteBgraPreData(data, w, h);
848 Graphics gr = cv.g;
849 ResourceFactory factory = gr.getResourceFactory();
850 Texture tex =
851 factory.getCachedTexture(img, Texture.WrapMode.CLAMP_TO_EDGE);
852 gr.setTransform(BaseTransform.IDENTITY_TRANSFORM);
853 gr.setCompositeMode(CompositeMode.SRC);
854 float dx2 = dx1 + w;
855 float dy2 = dy1 + h;
856 dx1 *= highestPixelScale;
857 dy1 *= highestPixelScale;
858 dx2 *= highestPixelScale;
859 dy2 *= highestPixelScale;
860 gr.drawTexture(tex,
861 dx1, dy1, dx2, dy2,
862 0, 0, w, h);
863 tex.contentsNotUseful();
864 tex.unlock();
865 gr.setCompositeMode(CompositeMode.SRC_OVER);
866 break;
867 }
868 case TRANSFORM:
869 {
870 double mxx = buf.getDouble() * highestPixelScale;
871 double mxy = buf.getDouble() * highestPixelScale;
872 double mxt = buf.getDouble() * highestPixelScale;
873 double myx = buf.getDouble() * highestPixelScale;
874 double myy = buf.getDouble() * highestPixelScale;
875 double myt = buf.getDouble() * highestPixelScale;
876 transform.setTransform(mxx, myx, mxy, myy, mxt, myt);
877 inversedirty = true;
878 break;
879 }
880 case GLOBAL_ALPHA:
881 globalAlpha = buf.getFloat();
882 break;
883 case FILL_RULE:
884 if (buf.getByte() == FILL_RULE_NON_ZERO) {
885 path.setWindingRule(Path2D.WIND_NON_ZERO);
886 } else {
887 path.setWindingRule(Path2D.WIND_EVEN_ODD);
888 }
889 break;
890 case COMP_MODE:
891 blendmode = (Blend.Mode)buf.getObject();
892 break;
893 case FILL_PAINT:
894 fillPaint = (Paint) buf.getObject();
895 break;
896 case STROKE_PAINT:
897 strokePaint = (Paint) buf.getObject();
898 break;
899 case LINE_WIDTH:
900 linewidth = buf.getFloat();
901 stroke = null;
902 break;
903 case LINE_CAP:
904 linecap = prcaps[buf.getUByte()];
905 stroke = null;
906 break;
907 case LINE_JOIN:
908 linejoin = prjoins[buf.getUByte()];
909 stroke = null;
910 break;
911 case MITER_LIMIT:
912 miterlimit = buf.getFloat();
913 stroke = null;
914 break;
915 case FONT:
916 {
917 pgfont = (PGFont) buf.getObject();
918 break;
919 }
920 case TEXT_ALIGN:
921 align = buf.getUByte();
922 break;
923 case TEXT_BASELINE:
924 baseline = prbases[buf.getUByte()];
925 break;
926 case FX_APPLY_EFFECT:
927 {
928 Effect e = (Effect) buf.getObject();
929 RenderBuf dest = clipStack.isEmpty() ? cv : temp;
930 BaseTransform tx;
931 if (highestPixelScale != 1.0f) {
932 TEMP_TX.setToScale(highestPixelScale, highestPixelScale);
933 tx = TEMP_TX;
934 cv.input.setPixelScale(highestPixelScale);
935 } else {
936 tx = BaseTransform.IDENTITY_TRANSFORM;
937 }
938 applyEffectOnAintoC(cv.input, e,
939 tx, null,
940 CompositeMode.SRC, dest);
941 cv.input.setPixelScale(1.0f);
942 if (dest != cv) {
943 blendAthruBintoC(dest, Mode.SRC_IN, clip,
944 null, CompositeMode.SRC, cv);
945 }
946 break;
947 }
948 case EFFECT:
949 effect = (Effect) buf.getObject();
950 break;
951 case FILL_PATH:
952 case STROKE_PATH:
953 case STROKE_LINE:
954 case FILL_RECT:
955 case CLEAR_RECT:
956 case STROKE_RECT:
957 case FILL_OVAL:
958 case STROKE_OVAL:
959 case FILL_ROUND_RECT:
960 case STROKE_ROUND_RECT:
961 case FILL_ARC:
962 case STROKE_ARC:
963 case DRAW_IMAGE:
964 case DRAW_SUBIMAGE:
965 case FILL_TEXT:
966 case STROKE_TEXT:
967 {
968 RenderBuf dest;
969 boolean tempvalidated;
970 boolean clipvalidated;
971 if (!clipStack.isEmpty()) {
972 initClip();
973 clipvalidated = true;
974 temp.validate(cv.g, tw, th);
975 tempvalidated = true;
976 dest = temp;
977 } else if (blendmode != Blend.Mode.SRC_OVER) {
978 clipvalidated = false;
979 temp.validate(cv.g, tw, th);
980 tempvalidated = true;
981 dest = temp;
982 } else {
983 clipvalidated = tempvalidated = false;
984 dest = cv;
985 }
986 if (effect != null) {
987 buf.save();
988 handleRenderOp(token, buf, null, TEMP_RECTBOUNDS);
989 RenderInput ri =
990 new RenderInput(token, buf, transform, TEMP_RECTBOUNDS);
991 // If we are rendering to cv then we need the results of
992 // the effect to be applied "SRC_OVER" onto the canvas.
993 // If we are rendering to temp then either SRC or SRC_OVER
994 // would work since we know it would have been freshly
995 // erased above, but using the more common SRC_OVER may save
996 // having to update the hardware blend equations.
997 Rectangle resultBounds =
998 applyEffectOnAintoC(ri, effect,
999 transform, null,
1000 CompositeMode.SRC_OVER, dest);
1001 if (dest != cv) {
1002 TEMP_RECTBOUNDS.setBounds(resultBounds.x, resultBounds.y,
1003 resultBounds.x + resultBounds.width,
1004 resultBounds.y + resultBounds.height);
1005 }
1006 } else {
1007 Graphics g = dest.g;
1008 g.setExtraAlpha(globalAlpha);
1009 g.setTransform(transform);
1010 // If we are not rendering directly to the canvas then
1011 // we need to save the bounds for the later stages.
1012 RectBounds optSaveBounds =
1013 (dest != cv) ? TEMP_RECTBOUNDS : null;
1014 handleRenderOp(token, buf, g, optSaveBounds);
1015 }
1016 if (!clipStack.isEmpty()) {
1017 CompositeMode compmode;
1018 if (blendmode == Blend.Mode.SRC_OVER) {
1019 // For the SRC_OVER case we can point the clip
1020 // operation directly to the screen with the Prism
1021 // SRC_OVER composite mode.
1022 dest = cv;
1023 compmode = CompositeMode.SRC_OVER;
1024 } else {
1025 // Here we are blending the rendered pixels that
1026 // were output to the temp buffer above against the
1027 // pixels of the canvas and we need to put them
1028 // back into the temp buffer. We must use SRC
1029 // mode here so that the erased (or reduced) pixels
1030 // actually get reduced to their new alpha.
1031 // assert: dest == temp;
1032 compmode = CompositeMode.SRC;
1033 }
1034 blendAthruBintoC(temp, Mode.SRC_IN, clip,
1035 TEMP_RECTBOUNDS, compmode, dest);
1036 }
1037 if (blendmode != Blend.Mode.SRC_OVER) {
1038 // We always use SRC mode here because the results of
1039 // the blend operation are final and must replace
1040 // the associated pixel in the canvas with no further
1041 // blending math.
1042 blendAthruBintoC(temp, blendmode, cv,
1043 TEMP_RECTBOUNDS, CompositeMode.SRC, cv);
1044 }
1045 if (clipvalidated) {
1046 clip.tex.unlock();
1047 }
1048 if (tempvalidated) {
1049 temp.tex.unlock();
1050 }
1051 break;
1052 }
1053 default:
1054 throw new InternalError("Unrecognized PGCanvas token: "+token);
1055 }
1056 }
1057 }
1058
1059 /**
1060 * Calculate bounds and/or render one single rendering operation.
1061 * All of the data for the rendering operation should be consumed
1062 * so that the buffer is left at the next token in the stream.
1063 *
1064 * @param token the stream token for the rendering op
1065 * @param buf the GrowableDataBuffer to get rendering info from
1066 * @param gr the Graphics to render to, if not null
1067 * @param bounds the RectBounds to accumulate bounds into, if not null
1068 */
1069 public void handleRenderOp(int token, GrowableDataBuffer buf,
1070 Graphics gr, RectBounds bounds)
1071 {
1072 boolean strokeBounds = false;
1073 boolean transformBounds = false;
1074 switch (token) {
1075 case FILL_PATH:
1076 {
1077 if (bounds != null) {
1078 shapebounds(path, bounds, BaseTransform.IDENTITY_TRANSFORM);
1079 }
1080 if (gr != null) {
1081 setupFill(gr);
1082 gr.fill(untransformedPath);
1083 }
1084 break;
1085 }
1086 case STROKE_PATH:
1087 {
1088 if (bounds != null) {
1089 strokebounds(getStroke(), untransformedPath, bounds, transform);
1090 }
1091 if (gr != null) {
1092 setupStroke(gr);
1093 gr.draw(untransformedPath);
1094 }
1095 break;
1096 }
1097 case STROKE_LINE:
1098 {
1099 float x1 = buf.getFloat();
1100 float y1 = buf.getFloat();
1101 float x2 = buf.getFloat();
1102 float y2 = buf.getFloat();
1103 if (bounds != null) {
1104 bounds.setBoundsAndSort(x1, y1, x2, y2);
1105 strokeBounds = true;
1106 transformBounds = true;
1107 }
1108 if (gr != null) {
1109 setupStroke(gr);
1110 gr.drawLine(x1, y1, x2, y2);
1111 }
1112 break;
1113 }
1114 case STROKE_RECT:
1115 case STROKE_OVAL:
1116 strokeBounds = true;
1117 case FILL_RECT:
1118 case CLEAR_RECT:
1119 case FILL_OVAL:
1120 {
1121 float x = buf.getFloat();
1122 float y = buf.getFloat();
1123 float w = buf.getFloat();
1124 float h = buf.getFloat();
1125 if (bounds != null) {
1126 bounds.setBounds(x, y, x+w, y+h);
1127 transformBounds = true;
1128 }
1129 if (gr != null) {
1130 switch (token) {
1131 case FILL_RECT:
1132 setupFill(gr);
1133 gr.fillRect(x, y, w, h);
1134 break;
1135 case FILL_OVAL:
1136 setupFill(gr);
1137 gr.fillEllipse(x, y, w, h);
1138 break;
1139 case STROKE_RECT:
1140 setupStroke(gr);
1141 gr.drawRect(x, y, w, h);
1142 break;
1143 case STROKE_OVAL:
1144 setupStroke(gr);
1145 gr.drawEllipse(x, y, w, h);
1146 break;
1147 case CLEAR_RECT:
1148 gr.setPaint(Color.TRANSPARENT);
1149 gr.setCompositeMode(CompositeMode.SRC);
1150 gr.fillRect(x, y, w, h);
1151 gr.setCompositeMode(CompositeMode.SRC_OVER);
1152 break;
1153 }
1154 }
1155 break;
1156 }
1157 case STROKE_ROUND_RECT:
1158 strokeBounds = true;
1159 case FILL_ROUND_RECT:
1160 {
1161 float x = buf.getFloat();
1162 float y = buf.getFloat();
1163 float w = buf.getFloat();
1164 float h = buf.getFloat();
1165 float aw = buf.getFloat();
1166 float ah = buf.getFloat();
1167 if (bounds != null) {
1168 bounds.setBounds(x, y, x+w, y+h);
1169 transformBounds = true;
1170 }
1171 if (gr != null) {
1172 if (token == FILL_ROUND_RECT) {
1173 setupFill(gr);
1174 gr.fillRoundRect(x, y, w, h, aw, ah);
1175 } else {
1176 setupStroke(gr);
1177 gr.drawRoundRect(x, y, w, h, aw, ah);
1178 }
1179 }
1180 break;
1181 }
1182 case FILL_ARC:
1183 case STROKE_ARC:
1184 {
1185 float x = buf.getFloat();
1186 float y = buf.getFloat();
1187 float w = buf.getFloat();
1188 float h = buf.getFloat();
1189 float as = buf.getFloat();
1190 float ae = buf.getFloat();
1191 TEMP_ARC.setArc(x, y, w, h, as, ae, arctype);
1192 if (token == FILL_ARC) {
1193 if (bounds != null) {
1194 shapebounds(TEMP_ARC, bounds, transform);
1195 }
1196 if (gr != null) {
1197 setupFill(gr);
1198 gr.fill(TEMP_ARC);
1199 }
1200 } else {
1201 if (bounds != null) {
1202 strokebounds(getStroke(), TEMP_ARC, bounds, transform);
1203 }
1204 if (gr != null) {
1205 setupStroke(gr);
1206 gr.draw(TEMP_ARC);
1207 }
1208 }
1209 break;
1210 }
1211 case DRAW_IMAGE:
1212 case DRAW_SUBIMAGE:
1213 {
1214 float dx = buf.getFloat();
1215 float dy = buf.getFloat();
1216 float dw = buf.getFloat();
1217 float dh = buf.getFloat();
1218 Image img = (Image) buf.getObject();
1219 float sx, sy, sw, sh;
1220 if (token == DRAW_IMAGE) {
1221 sx = sy = 0f;
1222 sw = img.getWidth();
1223 sh = img.getHeight();
1224 } else {
1225 sx = buf.getFloat();
1226 sy = buf.getFloat();
1227 sw = buf.getFloat();
1228 sh = buf.getFloat();
1229 float ps = img.getPixelScale();
1230 if (ps != 1.0f) {
1231 sx *= ps;
1232 sy *= ps;
1233 sw *= ps;
1234 sh *= ps;
1235 }
1236 }
1237 if (bounds != null) {
1238 bounds.setBounds(dx, dy, dx+dw, dy+dh);
1239 transformBounds = true;
1240 }
1241 if (gr != null) {
1242 ResourceFactory factory = gr.getResourceFactory();
1243 Texture tex =
1244 factory.getCachedTexture(img, Texture.WrapMode.CLAMP_TO_EDGE);
1245 gr.drawTexture(tex,
1246 dx, dy, dx+dw, dy+dh,
1247 sx, sy, sx+sw, sy+sh);
1248 tex.unlock();
1249 }
1250 break;
1251 }
1252 case FILL_TEXT:
1253 case STROKE_TEXT:
1254 {
1255 float x = buf.getFloat();
1256 float y = buf.getFloat();
1257 float maxWidth = buf.getFloat();
1258 boolean rtl = buf.getBoolean();
1259 String string = (String) buf.getObject();
1260 int dir = rtl ? PrismTextLayout.DIRECTION_RTL :
1261 PrismTextLayout.DIRECTION_LTR;
1262
1263 textLayout.setContent(string, pgfont);
1264 textLayout.setAlignment(align);
1265 textLayout.setDirection(dir);
1266 float xAlign = 0, yAlign = 0;
1267 BaseBounds layoutBounds = textLayout.getBounds();
1268 float layoutWidth = layoutBounds.getWidth();
1269 float layoutHeight = layoutBounds.getHeight();
1270 switch (align) {
1271 case ALIGN_RIGHT: xAlign = layoutWidth; break;
1272 case ALIGN_CENTER: xAlign = layoutWidth / 2; break;
1273 }
1274 switch (baseline) {
1275 case BASE_ALPHABETIC: yAlign = -layoutBounds.getMinY(); break;
1276 case BASE_MIDDLE: yAlign = layoutHeight / 2; break;
1277 case BASE_BOTTOM: yAlign = layoutHeight; break;
1278 }
1279 if (bounds != null) {
1280 TEMP_TX.setTransform(transform);
1281 if (maxWidth > 0.0 && layoutWidth > maxWidth) {
1282 float sx = maxWidth / layoutWidth;
1283 TEMP_TX.translate(x - xAlign * sx, y - yAlign);
1284 TEMP_TX.scale(sx, 1);
1285 } else {
1286 TEMP_TX.translate(x - xAlign, y - yAlign);
1287 }
1288 textLayout.getBounds(null, bounds);
1289 TEMP_TX.transform(bounds, bounds);
1290 if (token == STROKE_TEXT) {
1291 int flag = PrismTextLayout.TYPE_TEXT;
1292 Shape textShape = textLayout.getShape(flag, null);
1293 RectBounds shapeBounds = new RectBounds();
1294 strokebounds(getStroke(), textShape, shapeBounds, TEMP_TX);
1295 bounds.unionWith(shapeBounds);
1296 }
1297 }
1298 if (gr != null) {
1299 if (maxWidth > 0.0 && layoutWidth > maxWidth) {
1300 float sx = maxWidth / layoutWidth;
1301 if (rtl) {
1302 gr.translate(x + maxWidth - xAlign * sx, y - yAlign);
1303 gr.scale(-sx, 1);
1304 } else {
1305 gr.translate(x - xAlign * sx, y - yAlign);
1306 gr.scale(sx, 1);
1307 }
1308 } else {
1309 if (rtl) {
1310 gr.translate(x + layoutWidth - xAlign, y - yAlign);
1311 gr.scale(-1, 1);
1312 } else {
1313 gr.translate(x - xAlign, y - yAlign);
1314 }
1315 }
1316 if (token == FILL_TEXT) {
1317 ngtext.setMode(NGShape.Mode.FILL);
1318 ngtext.setFillPaint(fillPaint);
1319 if (fillPaint.getType() == Paint.Type.LINEAR_GRADIENT && fillPaint.isProportional()) {
1320 ngtext.setContentBounds(new RectBounds(0, 0, layoutWidth, layoutHeight));
1321 }
1322 } else {
1323 if (strokePaint.getType() == Paint.Type.LINEAR_GRADIENT && strokePaint.isProportional()) {
1324 int flag = PrismTextLayout.TYPE_TEXT;
1325 Shape textShape = textLayout.getShape(flag, null);
1326 RectBounds shapeBounds = new RectBounds();
1327 strokebounds(getStroke(), textShape, shapeBounds, BaseTransform.IDENTITY_TRANSFORM);
1328 RectBounds textBounds = new RectBounds();
1329 textLayout.getBounds(null, textBounds);
1330 textBounds.unionWith(shapeBounds);
1331 ngtext.setContentBounds(textBounds);
1332 }
1333 ngtext.setMode(NGShape.Mode.STROKE);
1334 ngtext.setDrawStroke(getStroke());
1335 ngtext.setDrawPaint(strokePaint);
1336 }
1337 ngtext.setFont(pgfont);
1338 ngtext.setGlyphs(textLayout.getRuns());
1339 ngtext.renderContent(gr);
1340 }
1341 break;
1342 }
1343 default:
1344 throw new InternalError("Unrecognized PGCanvas rendering token: "+token);
1345 }
1346 if (bounds != null) {
1347 if (strokeBounds) {
1348 BasicStroke s = getStroke();
1349 if (s.getType() != BasicStroke.TYPE_INNER) {
1350 float lw = s.getLineWidth();
1351 if (s.getType() == BasicStroke.TYPE_CENTERED) {
1352 lw /= 2f;
1353 }
1354 bounds.grow(lw, lw);
1355 }
1356 }
1357 if (transformBounds) {
1358 txBounds(bounds, transform);
1359 }
1360 }
1361 }
1362
1363 static void txBounds(RectBounds bounds, BaseTransform transform) {
1364 switch (transform.getType()) {
1365 case BaseTransform.TYPE_IDENTITY:
1366 break;
1367 case BaseTransform.TYPE_TRANSLATION:
1368 float tx = (float) transform.getMxt();
1369 float ty = (float) transform.getMyt();
1370 bounds.setBounds(bounds.getMinX() + tx, bounds.getMinY() + ty,
1371 bounds.getMaxX() + tx, bounds.getMaxY() + ty);
1372 break;
1373 default:
1374 BaseBounds txbounds = transform.transform(bounds, bounds);
1375 if (txbounds != bounds) {
1376 bounds.setBounds(txbounds.getMinX(), txbounds.getMinY(),
1377 txbounds.getMaxX(), txbounds.getMaxY());
1378 }
1379 break;
1380 }
1381 }
1382
1383 static void inverseTxBounds(RectBounds bounds, BaseTransform transform) {
1384 switch (transform.getType()) {
1385 case BaseTransform.TYPE_IDENTITY:
1386 break;
1387 case BaseTransform.TYPE_TRANSLATION:
1388 float tx = (float) transform.getMxt();
1389 float ty = (float) transform.getMyt();
1390 bounds.setBounds(bounds.getMinX() - tx, bounds.getMinY() - ty,
1391 bounds.getMaxX() - tx, bounds.getMaxY() - ty);
1392 break;
1393 default:
1394 try {
1395 BaseBounds txbounds = transform.inverseTransform(bounds, bounds);
1396 if (txbounds != bounds) {
1397 bounds.setBounds(txbounds.getMinX(), txbounds.getMinY(),
1398 txbounds.getMaxX(), txbounds.getMaxY());
1399 }
1400 } catch (NoninvertibleTransformException e) {
1401 bounds.makeEmpty();
1402 }
1403 break;
1404 }
1405 }
1406
1407 public void updateBounds(float w, float h) {
1408 this.tw = (int) Math.ceil(w * highestPixelScale);
1409 this.th = (int) Math.ceil(h * highestPixelScale);
1410 geometryChanged();
1411 }
1412
1413 // Returns true if we are falling behind in rendering (i.e. we
1414 // have unrendered data at the time of the synch. This tells
1415 // the FX layer that it should consider emitting a RESET if it
1416 // detects a full-canvas clear command even if it looks like it
1417 // is superfluous.
1418 public boolean updateRendering(GrowableDataBuffer buf) {
1419 if (buf.isEmpty()) {
1420 GrowableDataBuffer.returnBuffer(buf);
1421 return (this.thebuf != null);
1422 }
1423 boolean reset = (buf.peekByte(0) == RESET);
1424 GrowableDataBuffer retbuf;
1425 if (reset || this.thebuf == null) {
1426 retbuf = this.thebuf;
1427 this.thebuf = buf;
1428 } else {
1429 this.thebuf.append(buf);
1430 retbuf = buf;
1431 }
1432 geometryChanged();
1433 if (retbuf != null) {
1434 GrowableDataBuffer.returnBuffer(retbuf);
1435 return true;
1436 }
1437 return false;
1438 }
1439
1440 class RenderInput extends Effect {
1441 float x, y, w, h;
1442 int token;
1443 GrowableDataBuffer buf;
1444 Affine2D savedBoundsTx = new Affine2D();
1445
1446 public RenderInput(int token, GrowableDataBuffer buf,
1447 BaseTransform boundsTx, RectBounds rb)
1448 {
1449 this.token = token;
1450 this.buf = buf;
1451 savedBoundsTx.setTransform(boundsTx);
1452 this.x = rb.getMinX();
1453 this.y = rb.getMinY();
1454 this.w = rb.getWidth();
1455 this.h = rb.getHeight();
1456 }
1457
1458 @Override
1459 public ImageData filter(FilterContext fctx, BaseTransform transform,
1460 Rectangle outputClip, Object renderHelper,
1461 Effect defaultInput)
1462 {
1463 BaseBounds bounds = getBounds(transform, defaultInput);
1464 if (outputClip != null) {
1465 bounds.intersectWith(outputClip);
1466 }
1467 Rectangle r = new Rectangle(bounds);
1468 if (r.width < 1) r.width = 1;
1469 if (r.height < 1) r.height = 1;
1470 PrDrawable ret = (PrDrawable) Effect.getCompatibleImage(fctx, r.width, r.height);
1471 if (ret != null) {
1472 Graphics g = ret.createGraphics();
1473 g.setExtraAlpha(globalAlpha);
1474 g.translate(-r.x, -r.y);
1475 if (transform != null) {
1476 g.transform(transform);
1477 }
1478 buf.restore();
1479 handleRenderOp(token, buf, g, null);
1480 }
1481 return new ImageData(fctx, ret, r);
1482 }
1483
1484 @Override
1485 public AccelType getAccelType(FilterContext fctx) {
1486 throw new UnsupportedOperationException("Not supported yet.");
1487 }
1488
1489 @Override
1490 public BaseBounds getBounds(BaseTransform transform, Effect defaultInput) {
1491 RectBounds ret = new RectBounds(x, y, x + w, y + h);
1492 if (!transform.equals(savedBoundsTx)) {
1493 inverseTxBounds(ret, savedBoundsTx);
1494 txBounds(ret, transform);
1495 }
1496 return ret;
1497 }
1498
1499 @Override
1500 public boolean reducesOpaquePixels() {
1501 return false;
1502 }
1503
1504 @Override
1505 public DirtyRegionContainer getDirtyRegions(Effect defaultInput, DirtyRegionPool regionPool) {
1506 return null; // Never called
1507 }
1508
1509 }
1510
1511 static class MyBlend extends Blend {
1512 public MyBlend(Mode mode, Effect bottomInput, Effect topInput) {
1513 super(mode, bottomInput, topInput);
1514 }
1515
1516 @Override
1517 public Rectangle getResultBounds(BaseTransform transform,
1518 Rectangle outputClip,
1519 ImageData... inputDatas)
1520 {
1521 // There is a bug in the ImageData class that means that the
1522 // outputClip will not be taken into account, so we override
1523 // here and apply it ourselves.
1524 Rectangle r = super.getResultBounds(transform, outputClip, inputDatas);
1525 r.intersectWith(outputClip);
1526 return r;
1527 }
1528 }
1529
1530 static class EffectInput extends Effect {
1531 RTTexture tex;
1532 float pixelscale;
1533
1534 EffectInput(RTTexture tex) {
1535 this.tex = tex;
1536 this.pixelscale = 1.0f;
1537 }
1538
1539 public void setPixelScale(float scale) {
1540 this.pixelscale = scale;
1541 }
1542
1543 @Override
1544 public ImageData filter(FilterContext fctx, BaseTransform transform,
1545 Rectangle outputClip, Object renderHelper,
1546 Effect defaultInput)
1547 {
1548 Filterable f = PrDrawable.create(fctx, tex);
1549 Rectangle r = new Rectangle(tex.getContentWidth(), tex.getContentHeight());
1550 ImageData id = new ImageData(fctx, f, r);
1551 if (pixelscale != 1.0f || !transform.isIdentity()) {
1552 Affine2D a2d = new Affine2D();
1553 a2d.scale(1.0f / pixelscale, 1.0f / pixelscale);
1554 a2d.concatenate(transform);
1555 id = id.transform(a2d);
1556 }
1557 return id;
1558 }
1559
1560 @Override
1561 public AccelType getAccelType(FilterContext fctx) {
1562 throw new UnsupportedOperationException("Not supported yet.");
1563 }
1564
1565 @Override
1566 public BaseBounds getBounds(BaseTransform transform, Effect defaultInput) {
1567 Rectangle r = new Rectangle(tex.getContentWidth(), tex.getContentHeight());
1568 return transformBounds(transform, new RectBounds(r));
1569 }
1570
1571 @Override
1572 public boolean reducesOpaquePixels() {
1573 return false;
1574 }
1575
1576 @Override
1577 public DirtyRegionContainer getDirtyRegions(Effect defaultInput, DirtyRegionPool regionPool) {
1578 return null; // Never called
1579 }
1580 }
1581 }