1 /*
2 * Copyright (c) 2012, 2015, 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 com.sun.glass.ui.Screen;
29 import javafx.geometry.VPos;
30 import javafx.scene.text.Font;
31 import java.nio.IntBuffer;
32 import java.util.concurrent.ExecutionException;
33 import java.util.concurrent.FutureTask;
34 import java.util.LinkedList;
35 import com.sun.javafx.font.PGFont;
36 import com.sun.javafx.geom.Arc2D;
37 import com.sun.javafx.geom.BaseBounds;
38 import com.sun.javafx.geom.DirtyRegionContainer;
39 import com.sun.javafx.geom.DirtyRegionPool;
40 import com.sun.javafx.geom.Path2D;
41 import com.sun.javafx.geom.PathIterator;
42 import com.sun.javafx.geom.RectBounds;
43 import com.sun.javafx.geom.Rectangle;
44 import com.sun.javafx.geom.RoundRectangle2D;
45 import com.sun.javafx.geom.Shape;
46 import com.sun.javafx.geom.transform.Affine2D;
47 import com.sun.javafx.geom.transform.BaseTransform;
48 import com.sun.javafx.geom.transform.NoninvertibleTransformException;
49 import com.sun.javafx.text.PrismTextLayout;
50 import com.sun.javafx.tk.RenderJob;
51 import com.sun.javafx.tk.ScreenConfigurationAccessor;
52 import com.sun.javafx.tk.Toolkit;
53 import com.sun.prism.BasicStroke;
54 import com.sun.prism.CompositeMode;
55 import com.sun.prism.Graphics;
56 import com.sun.prism.GraphicsPipeline;
57 import com.sun.prism.Image;
58 import com.sun.prism.MaskTextureGraphics;
59 import com.sun.prism.PrinterGraphics;
60 import com.sun.prism.RTTexture;
61 import com.sun.prism.ResourceFactory;
62 import com.sun.prism.Texture;
63 import com.sun.prism.Texture.WrapMode;
64 import com.sun.prism.paint.Color;
65 import com.sun.prism.paint.Paint;
66 import com.sun.scenario.effect.Blend;
67 import com.sun.scenario.effect.Blend.Mode;
68 import com.sun.scenario.effect.Effect;
69 import com.sun.scenario.effect.FilterContext;
70 import com.sun.scenario.effect.Filterable;
71 import com.sun.scenario.effect.ImageData;
72 import com.sun.scenario.effect.impl.prism.PrDrawable;
73 import com.sun.scenario.effect.impl.prism.PrFilterContext;
74 import com.sun.scenario.effect.impl.prism.PrTexture;
75 import javafx.scene.text.FontSmoothingType;
76
77 /**
78 */
79 public class NGCanvas extends NGNode {
80 public static final byte ATTR_BASE = 0;
81 public static final byte GLOBAL_ALPHA = ATTR_BASE + 0;
82 public static final byte COMP_MODE = ATTR_BASE + 1;
83 public static final byte FILL_PAINT = ATTR_BASE + 2;
84 public static final byte STROKE_PAINT = ATTR_BASE + 3;
85 public static final byte LINE_WIDTH = ATTR_BASE + 4;
86 public static final byte LINE_CAP = ATTR_BASE + 5;
87 public static final byte LINE_JOIN = ATTR_BASE + 6;
88 public static final byte MITER_LIMIT = ATTR_BASE + 7;
89 public static final byte FONT = ATTR_BASE + 8;
90 public static final byte TEXT_ALIGN = ATTR_BASE + 9;
91 public static final byte TEXT_BASELINE = ATTR_BASE + 10;
92 public static final byte TRANSFORM = ATTR_BASE + 11;
93 public static final byte EFFECT = ATTR_BASE + 12;
94 public static final byte PUSH_CLIP = ATTR_BASE + 13;
95 public static final byte POP_CLIP = ATTR_BASE + 14;
96 public static final byte ARC_TYPE = ATTR_BASE + 15;
97 public static final byte FILL_RULE = ATTR_BASE + 16;
98 public static final byte DASH_ARRAY = ATTR_BASE + 17;
99 public static final byte DASH_OFFSET = ATTR_BASE + 18;
100 public static final byte FONT_SMOOTH = ATTR_BASE + 19;
101
102 public static final byte OP_BASE = 20;
103 public static final byte FILL_RECT = OP_BASE + 0;
104 public static final byte STROKE_RECT = OP_BASE + 1;
105 public static final byte CLEAR_RECT = OP_BASE + 2;
106 public static final byte STROKE_LINE = OP_BASE + 3;
107 public static final byte FILL_OVAL = OP_BASE + 4;
108 public static final byte STROKE_OVAL = OP_BASE + 5;
109 public static final byte FILL_ROUND_RECT = OP_BASE + 6;
110 public static final byte STROKE_ROUND_RECT = OP_BASE + 7;
111 public static final byte FILL_ARC = OP_BASE + 8;
112 public static final byte STROKE_ARC = OP_BASE + 9;
113 public static final byte FILL_TEXT = OP_BASE + 10;
114 public static final byte STROKE_TEXT = OP_BASE + 11;
115
116 public static final byte PATH_BASE = 40;
117 public static final byte PATHSTART = PATH_BASE + 0;
118 public static final byte MOVETO = PATH_BASE + 1;
119 public static final byte LINETO = PATH_BASE + 2;
120 public static final byte QUADTO = PATH_BASE + 3;
121 public static final byte CUBICTO = PATH_BASE + 4;
122 public static final byte CLOSEPATH = PATH_BASE + 5;
123 public static final byte PATHEND = PATH_BASE + 6;
124 public static final byte FILL_PATH = PATH_BASE + 7;
125 public static final byte STROKE_PATH = PATH_BASE + 8;
126
127 public static final byte IMG_BASE = 50;
128 public static final byte DRAW_IMAGE = IMG_BASE + 0;
129 public static final byte DRAW_SUBIMAGE = IMG_BASE + 1;
130 public static final byte PUT_ARGB = IMG_BASE + 2;
131 public static final byte PUT_ARGBPRE_BUF = IMG_BASE + 3;
132
133 public static final byte FX_BASE = 60;
134 public static final byte FX_APPLY_EFFECT = FX_BASE + 0;
135
136 public static final byte UTIL_BASE = 70;
137 public static final byte RESET = UTIL_BASE + 0;
138 public static final byte SET_DIMS = UTIL_BASE + 1;
139
140 public static final byte CAP_BUTT = 0;
141 public static final byte CAP_ROUND = 1;
142 public static final byte CAP_SQUARE = 2;
143
144 public static final byte JOIN_MITER = 0;
145 public static final byte JOIN_ROUND = 1;
146 public static final byte JOIN_BEVEL = 2;
147
148 public static final byte ARC_OPEN = 0;
149 public static final byte ARC_CHORD = 1;
150 public static final byte ARC_PIE = 2;
151
152 public static final byte SMOOTH_GRAY = (byte) FontSmoothingType.GRAY.ordinal();
153 public static final byte SMOOTH_LCD = (byte) FontSmoothingType.LCD.ordinal();
154
155 public static final byte ALIGN_LEFT = 0;
156 public static final byte ALIGN_CENTER = 1;
157 public static final byte ALIGN_RIGHT = 2;
158 public static final byte ALIGN_JUSTIFY = 3;
159
160 public static final byte BASE_TOP = 0;
161 public static final byte BASE_MIDDLE = 1;
162 public static final byte BASE_ALPHABETIC = 2;
163 public static final byte BASE_BOTTOM = 3;
164
165 public static final byte FILL_RULE_NON_ZERO = 0;
166 public static final byte FILL_RULE_EVEN_ODD = 1;
167
168 static enum InitType {
169 CLEAR,
170 FILL_WHITE,
171 PRESERVE_UPPER_LEFT
172 }
173
174 static class RenderBuf {
175 final InitType init_type;
176 RTTexture tex;
177 Graphics g;
178 EffectInput input;
179 private PixelData savedPixelData = null;
180
181 public RenderBuf(InitType init_type) {
182 this.init_type = init_type;
183 }
184
185 public void dispose() {
186 if (tex != null) tex.dispose();
187
188 tex = null;
189 g = null;
190 input = null;
191 }
192
193 public boolean validate(Graphics resg, int tw, int th) {
194 int cw, ch;
195 boolean create;
196 if (tex == null) {
197 cw = ch = 0;
198 create = true;
199 } else {
200 cw = tex.getContentWidth();
201 ch = tex.getContentHeight();
202 tex.lock();
203 create = tex.isSurfaceLost() || cw < tw || ch < th;
204 }
205 if (create) {
206 RTTexture oldtex = tex;
207 ResourceFactory factory = (resg == null)
208 ? GraphicsPipeline.getDefaultResourceFactory()
209 : resg.getResourceFactory();
210 RTTexture newtex =
211 factory.createRTTexture(tw, th, WrapMode.CLAMP_TO_ZERO);
212 this.tex = newtex;
213 this.g = newtex.createGraphics();
214 this.input = new EffectInput(newtex);
215 if (oldtex != null) {
216 if (init_type == InitType.PRESERVE_UPPER_LEFT) {
217 g.setCompositeMode(CompositeMode.SRC);
218 if (oldtex.isSurfaceLost()) {
219 if (savedPixelData != null) {
220 savedPixelData.restore(g, cw, ch);
221 }
222 } else {
223 g.drawTexture(oldtex, 0, 0, cw, ch);
224 }
225 g.setCompositeMode(CompositeMode.SRC_OVER);
226 }
227 oldtex.unlock();
228 oldtex.dispose();
229 }
230 if (init_type == InitType.FILL_WHITE) {
231 g.clear(Color.WHITE);
232 }
233 return true;
234 } else {
235 if (this.g == null) {
236 this.g = tex.createGraphics();
237 if (this.g == null) {
238 tex.dispose();
239 ResourceFactory factory = (resg == null)
240 ? GraphicsPipeline.getDefaultResourceFactory()
241 : resg.getResourceFactory();
242 tex = factory.createRTTexture(tw, th, WrapMode.CLAMP_TO_ZERO);
243 this.g = tex.createGraphics();
244 this.input = new EffectInput(tex);
245 if (savedPixelData != null) {
246 g.setCompositeMode(CompositeMode.SRC);
247 savedPixelData.restore(g, tw, th);
248 g.setCompositeMode(CompositeMode.SRC_OVER);
249 } else if (init_type == InitType.FILL_WHITE) {
250 g.clear(Color.WHITE);
251 }
252 return true;
253 }
254 }
255 }
256 if (init_type == InitType.CLEAR) {
257 g.clear();
258 }
259 return false;
260 }
261
262 private void save(int tw, int th) {
263 if (tex.isVolatile()) {
264 if (savedPixelData == null) {
265 savedPixelData = new PixelData(tw, th);
266 }
267 savedPixelData.save(tex);
268 }
269 }
270 }
271
272 // Saved pixel data used to preserve the image that backs the canvas if the
273 // RTT is volatile.
274 private static class PixelData {
275 private IntBuffer pixels = null;
276 private boolean validPixels = false;
277 private int cw, ch;
278
279 private PixelData(int cw, int ch) {
280 this.cw = cw;
281 this.ch = ch;
282 pixels = IntBuffer.allocate(cw*ch);
283 }
284
285 private void save(RTTexture tex) {
286 int tw = tex.getContentWidth();
287 int th = tex.getContentHeight();
288 if (cw < tw || ch < th) {
289 cw = tw;
290 ch = th;
291 pixels = IntBuffer.allocate(cw*ch);
292 }
293 pixels.rewind();
294 tex.readPixels(pixels);
295 validPixels = true;
296 }
297
298 private void restore(Graphics g, int tw, int th) {
299 if (validPixels) {
300 Image img = Image.fromIntArgbPreData(pixels, tw, th);
301 ResourceFactory factory = g.getResourceFactory();
302 Texture tempTex =
303 factory.createTexture(img,
304 Texture.Usage.DEFAULT,
305 Texture.WrapMode.CLAMP_TO_EDGE);
306 g.drawTexture(tempTex, 0, 0, tw, th);
307 tempTex.dispose();
308 }
309 }
310 }
311
312 private static Blend BLENDER = new MyBlend(Mode.SRC_OVER, null, null);
313
314 private GrowableDataBuffer thebuf;
315
316 private final float highestPixelScale;
317 private int tw, th;
318 private int cw, ch;
319 private RenderBuf cv;
320 private RenderBuf temp;
321 private RenderBuf clip;
322
323 private float globalAlpha;
324 private Blend.Mode blendmode;
325 private Paint fillPaint, strokePaint;
326 private float linewidth;
327 private int linecap, linejoin;
328 private float miterlimit;
329 private double[] dashes;
330 private float dashOffset;
331 private BasicStroke stroke;
332 private Path2D path;
333 private NGText ngtext;
334 private PrismTextLayout textLayout;
335 private PGFont pgfont;
336 private int smoothing;
337 private int align;
338 private int baseline;
339 private Affine2D transform;
340 private Affine2D inverseTransform;
341 private boolean inversedirty;
342 private LinkedList<Path2D> clipStack;
343 private int clipsRendered;
344 private boolean clipIsRect;
345 private Rectangle clipRect;
346 private Effect effect;
347 private int arctype;
348
349 static float TEMP_COORDS[] = new float[6];
350 private static Arc2D TEMP_ARC = new Arc2D();
351 private static RectBounds TEMP_RECTBOUNDS = new RectBounds();
352
353 public NGCanvas() {
354 Toolkit tk = Toolkit.getToolkit();
355 ScreenConfigurationAccessor screenAccessor = tk.getScreenConfigurationAccessor();
356 float hPS = 1.0f;
357 for (Object screen : tk.getScreens()) {
358 hPS = Math.max(screenAccessor.getScale(screen), hPS);
359 }
360 highestPixelScale = hPS;
361
362 cv = new RenderBuf(InitType.PRESERVE_UPPER_LEFT);
363 temp = new RenderBuf(InitType.CLEAR);
364 clip = new RenderBuf(InitType.FILL_WHITE);
365
366 path = new Path2D();
367 ngtext = new NGText();
368 textLayout = new PrismTextLayout();
369 transform = new Affine2D();
370 clipStack = new LinkedList<Path2D>();
371 initAttributes();
372 }
373
374 private void initAttributes() {
375 globalAlpha = 1.0f;
376 blendmode = Mode.SRC_OVER;
377 fillPaint = Color.BLACK;
378 strokePaint = Color.BLACK;
379 linewidth = 1.0f;
380 linecap = BasicStroke.CAP_SQUARE;
381 linejoin = BasicStroke.JOIN_MITER;
382 miterlimit = 10f;
383 dashes = null;
384 dashOffset = 0.0f;
385 stroke = null;
386 path.setWindingRule(Path2D.WIND_NON_ZERO);
387 // ngtext stores no state between render operations
388 // textLayout stores no state between render operations
389 pgfont = (PGFont) Font.getDefault().impl_getNativeFont();
390 smoothing = SMOOTH_GRAY;
391 align = ALIGN_LEFT;
392 baseline = VPos.BASELINE.ordinal();
393 transform.setToScale(highestPixelScale, highestPixelScale);
394 clipStack.clear();
395 resetClip(false);
396 }
397
398 static final Affine2D TEMP_PATH_TX = new Affine2D();
399 static final int numCoords[] = { 2, 2, 4, 6, 0 };
400 Shape untransformedPath = new Shape() {
401
402 @Override
403 public RectBounds getBounds() {
404 if (transform.isTranslateOrIdentity()) {
405 RectBounds rb = path.getBounds();
406 if (transform.isIdentity()) {
407 return rb;
408 } else {
409 float tx = (float) transform.getMxt();
410 float ty = (float) transform.getMyt();
411 return new RectBounds(rb.getMinX() - tx, rb.getMinY() - ty,
412 rb.getMaxX() - tx, rb.getMaxY() - ty);
413 }
414 }
415 // We could use Shape.accumulate, but that method optimizes the
416 // bounds for curves and the optimized code above will simply ask
417 // the path for its bounds - which in this case of a Path2D would
418 // simply accumulate all of the coordinates in the buffer. So,
419 // we write a simpler accumulator loop here to be consistent with
420 // the optimized case above.
421 float x0 = Float.POSITIVE_INFINITY;
422 float y0 = Float.POSITIVE_INFINITY;
423 float x1 = Float.NEGATIVE_INFINITY;
424 float y1 = Float.NEGATIVE_INFINITY;
425 PathIterator pi = path.getPathIterator(getInverseTransform());
426 while (!pi.isDone()) {
427 int ncoords = numCoords[pi.currentSegment(TEMP_COORDS)];
428 for (int i = 0; i < ncoords; i += 2) {
429 if (x0 > TEMP_COORDS[i+0]) x0 = TEMP_COORDS[i+0];
430 if (x1 < TEMP_COORDS[i+0]) x1 = TEMP_COORDS[i+0];
431 if (y0 > TEMP_COORDS[i+1]) y0 = TEMP_COORDS[i+1];
432 if (y1 < TEMP_COORDS[i+1]) y1 = TEMP_COORDS[i+1];
433 }
434 pi.next();
435 }
436 return new RectBounds(x0, y0, x1, y1);
437 }
438
439 @Override
440 public boolean contains(float x, float y) {
441 TEMP_COORDS[0] = x;
442 TEMP_COORDS[1] = y;
443 transform.transform(TEMP_COORDS, 0, TEMP_COORDS, 0, 1);
444 x = TEMP_COORDS[0];
445 y = TEMP_COORDS[1];
446 return path.contains(x, y);
447 }
448
449 @Override
450 public boolean intersects(float x, float y, float w, float h) {
451 if (transform.isTranslateOrIdentity()) {
452 x += transform.getMxt();
453 y += transform.getMyt();
454 return path.intersects(x, y, w, h);
455 }
456 PathIterator pi = path.getPathIterator(getInverseTransform());
457 int crossings = Shape.rectCrossingsForPath(pi, x, y, x+w, y+h);
458 // int mask = (windingRule == WIND_NON_ZERO ? -1 : 2);
459 // return (crossings == Shape.RECT_INTERSECTS ||
460 // (crossings & mask) != 0);
461 // with wind == NON_ZERO, then mask == -1 and
462 // since REC_INTERSECTS != 0, we simplify to:
463 return (crossings != 0);
464 }
465
466 @Override
467 public boolean contains(float x, float y, float w, float h) {
468 if (transform.isTranslateOrIdentity()) {
469 x += transform.getMxt();
470 y += transform.getMyt();
471 return path.contains(x, y, w, h);
472 }
473 PathIterator pi = path.getPathIterator(getInverseTransform());
474 int crossings = Shape.rectCrossingsForPath(pi, x, y, x+w, y+h);
475 // int mask = (windingRule == WIND_NON_ZERO ? -1 : 2);
476 // return (crossings != Shape.RECT_INTERSECTS &&
477 // (crossings & mask) != 0);
478 // with wind == NON_ZERO, then mask == -1 we simplify to:
479 return (crossings != Shape.RECT_INTERSECTS && crossings != 0);
480 }
481
482 public BaseTransform getCombinedTransform(BaseTransform tx) {
483 if (transform.isIdentity()) return tx;
484 if (transform.equals(tx)) return null;
485 Affine2D inv = getInverseTransform();
486 if (tx == null || tx.isIdentity()) return inv;
487 TEMP_PATH_TX.setTransform(tx);
488 TEMP_PATH_TX.concatenate(inv);
489 return TEMP_PATH_TX;
490 }
491
492 @Override
493 public PathIterator getPathIterator(BaseTransform tx) {
494 return path.getPathIterator(getCombinedTransform(tx));
495 }
496
497 @Override
498 public PathIterator getPathIterator(BaseTransform tx, float flatness) {
499 return path.getPathIterator(getCombinedTransform(tx), flatness);
500 }
501
502 @Override
503 public Shape copy() {
504 throw new UnsupportedOperationException("Not supported yet.");
505 }
506 };
507
508 private Affine2D getInverseTransform() {
509 if (inverseTransform == null) {
510 inverseTransform = new Affine2D();
511 inversedirty = true;
512 }
513 if (inversedirty) {
514 inverseTransform.setTransform(transform);
515 try {
516 inverseTransform.invert();
517 } catch (NoninvertibleTransformException e) {
518 inverseTransform.setToScale(0, 0);
519 }
520 inversedirty = false;
521 }
522 return inverseTransform;
523 }
524
525 @Override
526 protected boolean hasOverlappingContents() {
527 return true;
528 }
529
530 private static void shapebounds(Shape shape, RectBounds bounds,
531 BaseTransform transform)
532 {
533 TEMP_COORDS[0] = TEMP_COORDS[1] = Float.POSITIVE_INFINITY;
534 TEMP_COORDS[2] = TEMP_COORDS[3] = Float.NEGATIVE_INFINITY;
535 Shape.accumulate(TEMP_COORDS, shape, transform);
536 bounds.setBounds(TEMP_COORDS[0], TEMP_COORDS[1],
537 TEMP_COORDS[2], TEMP_COORDS[3]);
538 }
539
540 private static void strokebounds(BasicStroke stroke, Shape shape,
541 RectBounds bounds, BaseTransform transform)
542 {
543 TEMP_COORDS[0] = TEMP_COORDS[1] = Float.POSITIVE_INFINITY;
544 TEMP_COORDS[2] = TEMP_COORDS[3] = Float.NEGATIVE_INFINITY;
545 stroke.accumulateShapeBounds(TEMP_COORDS, shape, transform);
546 bounds.setBounds(TEMP_COORDS[0], TEMP_COORDS[1],
547 TEMP_COORDS[2], TEMP_COORDS[3]);
548 }
549
550 private static void runOnRenderThread(final Runnable r) {
551 // We really need a standard mechanism to detect the render thread !
552 if (Thread.currentThread().getName().startsWith("QuantumRenderer")) {
553 r.run();
554 } else {
555 FutureTask<Void> f = new FutureTask<Void>(r, null);
556 Toolkit.getToolkit().addRenderJob(new RenderJob(f));
557 try {
558 // block until job is complete
559 f.get();
560 } catch (ExecutionException ex) {
561 throw new AssertionError(ex);
562 } catch (InterruptedException ex) {
563 // ignore; recovery is impossible
564 }
565 }
566 }
567
568 private boolean printedCanvas(Graphics g) {
569 final RTTexture localTex = cv.tex;
570 if (!(g instanceof PrinterGraphics) || localTex == null) {
571 return false;
572 }
573 ResourceFactory factory = g.getResourceFactory();
574 boolean isCompatTex = factory.isCompatibleTexture(localTex);
575 if (isCompatTex) {
576 return false;
577 }
578
579 final int tw = localTex.getContentWidth();
580 final int th = localTex.getContentHeight();
581 final RTTexture tmpTex =
582 factory.createRTTexture(tw, th, WrapMode.CLAMP_TO_ZERO);
583 final Graphics texg = tmpTex.createGraphics();
584 texg.setCompositeMode(CompositeMode.SRC);
585 if (cv.savedPixelData == null) {
586 final PixelData pd = new PixelData(cw, ch);
587 runOnRenderThread(() -> {
588 pd.save(localTex);
589 pd.restore(texg, tw, th);
590 });
591 } else {
592 cv.savedPixelData.restore(texg, tw, th);
593 }
594 g.drawTexture(tmpTex, 0, 0, tw, th);
595 tmpTex.unlock();
596 tmpTex.dispose();
597 return true;
598 }
599
600 @Override
601 protected void renderContent(Graphics g) {
602 if (printedCanvas(g)) return;
603 initCanvas(g);
604 if (cv.tex != null) {
605 if (thebuf != null) {
606 renderStream(thebuf);
607 GrowableDataBuffer.returnBuffer(thebuf);
608 thebuf = null;
609 }
610 float dw = tw / highestPixelScale;
611 float dh = th / highestPixelScale;
612 g.drawTexture(cv.tex,
613 0, 0, dw, dh,
614 0, 0, tw, th);
615 // Must save the pixels every frame if RTT is volatile.
616 cv.save(tw, th);
617 }
618 this.temp.g = this.clip.g = this.cv.g = null;
619 }
620
621 @Override
622 public void renderForcedContent(Graphics gOptional) {
623 if (thebuf != null) {
624 initCanvas(gOptional);
625 if (cv.tex != null) {
626 renderStream(thebuf);
627 GrowableDataBuffer.returnBuffer(thebuf);
628 thebuf = null;
629 cv.save(tw, th);
630 }
631 this.temp.g = this.clip.g = this.cv.g = null;
632 }
633 }
634
635 private void initCanvas(Graphics g) {
636 if (tw <= 0 || th <= 0) {
637 cv.dispose();
638 return;
639 }
640 if (cv.validate(g, tw, th)) {
641 // If the texture was recreated then we add a permanent
642 // "useful" and extra "lock" status to it.
643 cv.tex.contentsUseful();
644 cv.tex.makePermanent();
645 cv.tex.lock();
646 }
647 }
648
649 private void clearCanvas(int x, int y, int w, int h) {
650 cv.g.setCompositeMode(CompositeMode.CLEAR);
651 cv.g.setTransform(BaseTransform.IDENTITY_TRANSFORM);
652 cv.g.fillQuad(x, y, x+w, y+h);
653 cv.g.setCompositeMode(CompositeMode.SRC_OVER);
654 }
655
656 private void resetClip(boolean andDispose) {
657 if (andDispose) clip.dispose();
658 clipsRendered = 0;
659 clipIsRect = true;
660 clipRect = null;
661 }
662
663 private static final float CLIPRECT_TOLERANCE = 1.0f / 256.0f;
664 private static final Rectangle TEMP_RECT = new Rectangle();
665 private boolean initClip() {
666 boolean clipValidated;
667 if (clipIsRect) {
668 clipValidated = false;
669 } else {
670 clipValidated = true;
671 if (clip.validate(cv.g, tw, th)) {
672 clip.tex.contentsUseful();
673 // Reset, but do not dispose - we just validated (and cleared) it...
674 resetClip(false);
675 }
676 }
677 int clipSize = clipStack.size();
678 while (clipsRendered < clipSize) {
679 Path2D clippath = clipStack.get(clipsRendered++);
680 if (clipIsRect) {
681 if (clippath.checkAndGetIntRect(TEMP_RECT, CLIPRECT_TOLERANCE)) {
682 if (clipRect == null) {
683 clipRect = new Rectangle(TEMP_RECT);
684 } else {
685 clipRect.intersectWith(TEMP_RECT);
686 }
687 continue;
688 }
689 clipIsRect = false;
690 if (!clipValidated) {
691 clipValidated = true;
692 if (clip.validate(cv.g, tw, th)) {
693 clip.tex.contentsUseful();
694 // No need to reset, this is our first fill.
695 }
696 }
697 if (clipRect != null) {
698 renderClip(new RoundRectangle2D(clipRect.x, clipRect.y,
699 clipRect.width, clipRect.height,
700 0, 0));
701 }
702 }
703 shapebounds(clippath, TEMP_RECTBOUNDS, BaseTransform.IDENTITY_TRANSFORM);
704 TEMP_RECT.setBounds(TEMP_RECTBOUNDS);
705 if (clipRect == null) {
706 clipRect = new Rectangle(TEMP_RECT);
707 } else {
708 clipRect.intersectWith(TEMP_RECT);
709 }
710 renderClip(clippath);
711 }
712 if (clipValidated && clipIsRect) {
713 clip.tex.unlock();
714 }
715 return !clipIsRect;
716 }
717
718 private void renderClip(Shape clippath) {
719 temp.validate(cv.g, tw, th);
720 temp.g.setPaint(Color.WHITE);
721 temp.g.setTransform(BaseTransform.IDENTITY_TRANSFORM);
722 temp.g.fill(clippath);
723 blendAthruBintoC(temp, Mode.SRC_IN, clip, null, CompositeMode.SRC, clip);
724 temp.tex.unlock();
725 }
726
727 private Rectangle applyEffectOnAintoC(Effect definput,
728 Effect effect,
729 BaseTransform transform,
730 Rectangle outputClip,
731 CompositeMode comp,
732 RenderBuf destbuf)
733 {
734 FilterContext fctx =
735 PrFilterContext.getInstance(destbuf.tex.getAssociatedScreen());
736 ImageData id =
737 effect.filter(fctx, transform, outputClip, null, definput);
738 Rectangle r = id.getUntransformedBounds();
739 Filterable f = id.getUntransformedImage();
740 Texture tex = ((PrTexture) f).getTextureObject();
741 destbuf.g.setTransform(id.getTransform());
742 destbuf.g.setCompositeMode(comp);
743 destbuf.g.drawTexture(tex, r.x, r.y, r.width, r.height);
744 destbuf.g.setTransform(BaseTransform.IDENTITY_TRANSFORM);
745 destbuf.g.setCompositeMode(CompositeMode.SRC_OVER);
746 Rectangle resultBounds = id.getTransformedBounds(outputClip);
747 id.unref();
748 return resultBounds;
749 }
750
751 private void blendAthruBintoC(RenderBuf drawbuf,
752 Mode mode,
753 RenderBuf clipbuf,
754 RectBounds bounds,
755 CompositeMode comp,
756 RenderBuf destbuf)
757 {
758 BLENDER.setTopInput(drawbuf.input);
759 BLENDER.setBottomInput(clipbuf.input);
760 BLENDER.setMode(mode);
761 Rectangle blendclip;
762 if (bounds != null) {
763 blendclip = new Rectangle(bounds);
764 } else {
765 blendclip = null;
766 }
767 applyEffectOnAintoC(null, BLENDER,
768 BaseTransform.IDENTITY_TRANSFORM, blendclip,
769 comp, destbuf);
770 }
771
772 private void setupFill(Graphics gr) {
773 gr.setPaint(fillPaint);
774 }
775
776 private BasicStroke getStroke() {
777 if (stroke == null) {
778 stroke = new BasicStroke(linewidth, linecap, linejoin,
779 miterlimit, dashes, dashOffset);
780 }
781 return stroke;
782 }
783
784 private void setupStroke(Graphics gr) {
785 gr.setStroke(getStroke());
786 gr.setPaint(strokePaint);
787 }
788
789 private static final int prcaps[] = {
790 BasicStroke.CAP_BUTT,
791 BasicStroke.CAP_ROUND,
792 BasicStroke.CAP_SQUARE,
793 };
794 private static final int prjoins[] = {
795 BasicStroke.JOIN_MITER,
796 BasicStroke.JOIN_ROUND,
797 BasicStroke.JOIN_BEVEL,
798 };
799 private static final int prbases[] = {
800 VPos.TOP.ordinal(),
801 VPos.CENTER.ordinal(),
802 VPos.BASELINE.ordinal(),
803 VPos.BOTTOM.ordinal(),
804 };
805 private static final Affine2D TEMP_TX = new Affine2D();
806 private void renderStream(GrowableDataBuffer buf) {
807 while (buf.hasValues()) {
808 int token = buf.getByte();
809 switch (token) {
810 case RESET:
811 initAttributes();
812 // RESET is always followed by SET_DIMS
813 // Setting cwh = twh avoids unnecessary double clears
814 this.cw = this.tw;
815 this.ch = this.th;
816 clearCanvas(0, 0, this.tw, this.th);
817 break;
818 case SET_DIMS:
819 int neww = (int) Math.ceil(buf.getFloat() * highestPixelScale);
820 int newh = (int) Math.ceil(buf.getFloat() * highestPixelScale);
821 int clearx = Math.min(neww, this.cw);
822 int cleary = Math.min(newh, this.ch);
823 if (clearx < this.tw) {
824 // tw is set to the final width, we simulate all of
825 // the intermediate changes in size by making sure
826 // that all pixels outside of any size change are
827 // cleared at the stream point where they happened
828 clearCanvas(clearx, 0, this.tw-clearx, this.th);
829 }
830 if (cleary < this.th) {
831 // th is set to the final width, we simulate all of
832 // the intermediate changes in size by making sure
833 // that all pixels outside of any size change are
834 // cleared at the stream point where they happened
835 clearCanvas(0, cleary, this.tw, this.th-cleary);
836 }
837 this.cw = neww;
838 this.ch = newh;
839 break;
840 case PATHSTART:
841 path.reset();
842 break;
843 case MOVETO:
844 path.moveTo(buf.getFloat(), buf.getFloat());
845 break;
846 case LINETO:
847 path.lineTo(buf.getFloat(), buf.getFloat());
848 break;
849 case QUADTO:
850 path.quadTo(buf.getFloat(), buf.getFloat(),
851 buf.getFloat(), buf.getFloat());
852 break;
853 case CUBICTO:
854 path.curveTo(buf.getFloat(), buf.getFloat(),
855 buf.getFloat(), buf.getFloat(),
856 buf.getFloat(), buf.getFloat());
857 break;
858 case CLOSEPATH:
859 path.closePath();
860 break;
861 case PATHEND:
862 if (highestPixelScale != 1.0f) {
863 TEMP_TX.setToScale(highestPixelScale, highestPixelScale);
864 path.transform(TEMP_TX);
865 }
866 break;
867 case PUSH_CLIP:
868 {
869 Path2D clippath = (Path2D) buf.getObject();
870 if (highestPixelScale != 1.0f) {
871 TEMP_TX.setToScale(highestPixelScale, highestPixelScale);
872 clippath.transform(TEMP_TX);
873 }
874 clipStack.addLast(clippath);
875 break;
876 }
877 case POP_CLIP:
878 // Let it be recreated when next needed
879 resetClip(true);
880 clipStack.removeLast();
881 break;
882 case ARC_TYPE:
883 {
884 byte type = buf.getByte();
885 switch (type) {
886 case ARC_OPEN: arctype = Arc2D.OPEN; break;
887 case ARC_CHORD: arctype = Arc2D.CHORD; break;
888 case ARC_PIE: arctype = Arc2D.PIE; break;
889 }
890 break;
891 }
892 case PUT_ARGB:
893 {
894 float dx1 = buf.getInt();
895 float dy1 = buf.getInt();
896 int argb = buf.getInt();
897 Graphics gr = cv.g;
898 gr.setExtraAlpha(1.0f);
899 gr.setCompositeMode(CompositeMode.SRC);
900 gr.setTransform(BaseTransform.IDENTITY_TRANSFORM);
901 dx1 *= highestPixelScale;
902 dy1 *= highestPixelScale;
903 float a = ((argb) >>> 24) / 255.0f;
904 float r = (((argb) >> 16) & 0xff) / 255.0f;
905 float g = (((argb) >> 8) & 0xff) / 255.0f;
906 float b = (((argb) ) & 0xff) / 255.0f;
907 gr.setPaint(new Color(r, g, b, a));
908 // Note that we cannot use fillRect here because SRC
909 // mode does not interact well with antialiasing.
910 // fillQuad does hard edges which matches the concept
911 // of setting adjacent abutting, non-overlapping "pixels"
912 gr.fillQuad(dx1, dy1, dx1+highestPixelScale, dy1+highestPixelScale);
913 gr.setCompositeMode(CompositeMode.SRC_OVER);
914 break;
915 }
916 case PUT_ARGBPRE_BUF:
917 {
918 float dx1 = buf.getInt();
919 float dy1 = buf.getInt();
920 int w = buf.getInt();
921 int h = buf.getInt();
922 byte[] data = (byte[]) buf.getObject();
923 Image img = Image.fromByteBgraPreData(data, w, h);
924 Graphics gr = cv.g;
925 ResourceFactory factory = gr.getResourceFactory();
926 Texture tex =
927 factory.getCachedTexture(img, Texture.WrapMode.CLAMP_TO_EDGE);
928 gr.setTransform(BaseTransform.IDENTITY_TRANSFORM);
929 gr.setCompositeMode(CompositeMode.SRC);
930 float dx2 = dx1 + w;
931 float dy2 = dy1 + h;
932 dx1 *= highestPixelScale;
933 dy1 *= highestPixelScale;
934 dx2 *= highestPixelScale;
935 dy2 *= highestPixelScale;
936 gr.drawTexture(tex,
937 dx1, dy1, dx2, dy2,
938 0, 0, w, h);
939 tex.contentsNotUseful();
940 tex.unlock();
941 gr.setCompositeMode(CompositeMode.SRC_OVER);
942 break;
943 }
944 case TRANSFORM:
945 {
946 double mxx = buf.getDouble() * highestPixelScale;
947 double mxy = buf.getDouble() * highestPixelScale;
948 double mxt = buf.getDouble() * highestPixelScale;
949 double myx = buf.getDouble() * highestPixelScale;
950 double myy = buf.getDouble() * highestPixelScale;
951 double myt = buf.getDouble() * highestPixelScale;
952 transform.setTransform(mxx, myx, mxy, myy, mxt, myt);
953 inversedirty = true;
954 break;
955 }
956 case GLOBAL_ALPHA:
957 globalAlpha = buf.getFloat();
958 break;
959 case FILL_RULE:
960 if (buf.getByte() == FILL_RULE_NON_ZERO) {
961 path.setWindingRule(Path2D.WIND_NON_ZERO);
962 } else {
963 path.setWindingRule(Path2D.WIND_EVEN_ODD);
964 }
965 break;
966 case COMP_MODE:
967 blendmode = (Blend.Mode)buf.getObject();
968 break;
969 case FILL_PAINT:
970 fillPaint = (Paint) buf.getObject();
971 break;
972 case STROKE_PAINT:
973 strokePaint = (Paint) buf.getObject();
974 break;
975 case LINE_WIDTH:
976 linewidth = buf.getFloat();
977 stroke = null;
978 break;
979 case LINE_CAP:
980 linecap = prcaps[buf.getUByte()];
981 stroke = null;
982 break;
983 case LINE_JOIN:
984 linejoin = prjoins[buf.getUByte()];
985 stroke = null;
986 break;
987 case MITER_LIMIT:
988 miterlimit = buf.getFloat();
989 stroke = null;
990 break;
991 case DASH_ARRAY:
992 dashes = (double[]) buf.getObject();
993 stroke = null;
994 break;
995 case DASH_OFFSET:
996 dashOffset = buf.getFloat();
997 stroke = null;
998 break;
999 case FONT:
1000 pgfont = (PGFont) buf.getObject();
1001 break;
1002 case FONT_SMOOTH:
1003 smoothing = buf.getUByte();
1004 break;
1005 case TEXT_ALIGN:
1006 align = buf.getUByte();
1007 break;
1008 case TEXT_BASELINE:
1009 baseline = prbases[buf.getUByte()];
1010 break;
1011 case FX_APPLY_EFFECT:
1012 {
1013 Effect e = (Effect) buf.getObject();
1014 RenderBuf dest = clipStack.isEmpty() ? cv : temp;
1015 BaseTransform tx;
1016 if (highestPixelScale != 1.0f) {
1017 TEMP_TX.setToScale(highestPixelScale, highestPixelScale);
1018 tx = TEMP_TX;
1019 cv.input.setPixelScale(highestPixelScale);
1020 } else {
1021 tx = BaseTransform.IDENTITY_TRANSFORM;
1022 }
1023 applyEffectOnAintoC(cv.input, e,
1024 tx, null,
1025 CompositeMode.SRC, dest);
1026 cv.input.setPixelScale(1.0f);
1027 if (dest != cv) {
1028 blendAthruBintoC(dest, Mode.SRC_IN, clip,
1029 null, CompositeMode.SRC, cv);
1030 }
1031 break;
1032 }
1033 case EFFECT:
1034 effect = (Effect) buf.getObject();
1035 break;
1036 case FILL_PATH:
1037 case STROKE_PATH:
1038 case STROKE_LINE:
1039 case FILL_RECT:
1040 case CLEAR_RECT:
1041 case STROKE_RECT:
1042 case FILL_OVAL:
1043 case STROKE_OVAL:
1044 case FILL_ROUND_RECT:
1045 case STROKE_ROUND_RECT:
1046 case FILL_ARC:
1047 case STROKE_ARC:
1048 case DRAW_IMAGE:
1049 case DRAW_SUBIMAGE:
1050 case FILL_TEXT:
1051 case STROKE_TEXT:
1052 {
1053 RenderBuf dest;
1054 boolean tempvalidated;
1055 boolean clipvalidated = initClip();
1056 if (clipvalidated) {
1057 temp.validate(cv.g, tw, th);
1058 tempvalidated = true;
1059 dest = temp;
1060 } else if (blendmode != Blend.Mode.SRC_OVER) {
1061 temp.validate(cv.g, tw, th);
1062 tempvalidated = true;
1063 dest = temp;
1064 } else {
1065 tempvalidated = false;
1066 dest = cv;
1067 }
1068 if (effect != null) {
1069 buf.save();
1070 handleRenderOp(token, buf, null, TEMP_RECTBOUNDS);
1071 RenderInput ri =
1072 new RenderInput(token, buf, transform, TEMP_RECTBOUNDS);
1073 // If we are rendering to cv then we need the results of
1074 // the effect to be applied "SRC_OVER" onto the canvas.
1075 // If we are rendering to temp then either SRC or SRC_OVER
1076 // would work since we know it would have been freshly
1077 // erased above, but using the more common SRC_OVER may save
1078 // having to update the hardware blend equations.
1079 Rectangle resultBounds =
1080 applyEffectOnAintoC(ri, effect,
1081 transform, clipRect,
1082 CompositeMode.SRC_OVER, dest);
1083 if (dest != cv) {
1084 TEMP_RECTBOUNDS.setBounds(resultBounds.x, resultBounds.y,
1085 resultBounds.x + resultBounds.width,
1086 resultBounds.y + resultBounds.height);
1087 }
1088 } else {
1089 Graphics g = dest.g;
1090 g.setExtraAlpha(globalAlpha);
1091 g.setTransform(transform);
1092 g.setClipRect(clipRect);
1093 // If we are not rendering directly to the canvas then
1094 // we need to save the bounds for the later stages.
1095 RectBounds optSaveBounds =
1096 (dest != cv) ? TEMP_RECTBOUNDS : null;
1097 handleRenderOp(token, buf, g, optSaveBounds);
1098 g.setClipRect(null);
1099 }
1100 if (clipvalidated) {
1101 CompositeMode compmode;
1102 if (blendmode == Blend.Mode.SRC_OVER) {
1103 // For the SRC_OVER case we can point the clip
1104 // operation directly to the screen with the Prism
1105 // SRC_OVER composite mode.
1106 dest = cv;
1107 compmode = CompositeMode.SRC_OVER;
1108 } else {
1109 // Here we are blending the rendered pixels that
1110 // were output to the temp buffer above against the
1111 // pixels of the canvas and we need to put them
1112 // back into the temp buffer. We must use SRC
1113 // mode here so that the erased (or reduced) pixels
1114 // actually get reduced to their new alpha.
1115 // assert: dest == temp;
1116 compmode = CompositeMode.SRC;
1117 }
1118 if (clipRect != null) {
1119 TEMP_RECTBOUNDS.intersectWith(clipRect);
1120 }
1121 if (!TEMP_RECTBOUNDS.isEmpty()) {
1122 if (dest == cv && cv.g instanceof MaskTextureGraphics) {
1123 MaskTextureGraphics mtg = (MaskTextureGraphics) cv.g;
1124 int dx = (int) Math.floor(TEMP_RECTBOUNDS.getMinX());
1125 int dy = (int) Math.floor(TEMP_RECTBOUNDS.getMinY());
1126 int dw = (int) Math.ceil(TEMP_RECTBOUNDS.getMaxX()) - dx;
1127 int dh = (int) Math.ceil(TEMP_RECTBOUNDS.getMaxY()) - dy;
1128 mtg.drawPixelsMasked(temp.tex, clip.tex,
1129 dx, dy, dw, dh,
1130 dx, dy, dx, dy);
1131 } else {
1132 blendAthruBintoC(temp, Mode.SRC_IN, clip,
1133 TEMP_RECTBOUNDS, compmode, dest);
1134 }
1135 }
1136 }
1137 if (blendmode != Blend.Mode.SRC_OVER) {
1138 // We always use SRC mode here because the results of
1139 // the blend operation are final and must replace
1140 // the associated pixel in the canvas with no further
1141 // blending math.
1142 if (clipRect != null) {
1143 TEMP_RECTBOUNDS.intersectWith(clipRect);
1144 }
1145 blendAthruBintoC(temp, blendmode, cv,
1146 TEMP_RECTBOUNDS, CompositeMode.SRC, cv);
1147 }
1148 if (clipvalidated) {
1149 clip.tex.unlock();
1150 }
1151 if (tempvalidated) {
1152 temp.tex.unlock();
1153 }
1154 break;
1155 }
1156 default:
1157 throw new InternalError("Unrecognized PGCanvas token: "+token);
1158 }
1159 }
1160 }
1161
1162 /**
1163 * Calculate bounds and/or render one single rendering operation.
1164 * All of the data for the rendering operation should be consumed
1165 * so that the buffer is left at the next token in the stream.
1166 *
1167 * @param token the stream token for the rendering op
1168 * @param buf the GrowableDataBuffer to get rendering info from
1169 * @param gr the Graphics to render to, if not null
1170 * @param bounds the RectBounds to accumulate bounds into, if not null
1171 */
1172 public void handleRenderOp(int token, GrowableDataBuffer buf,
1173 Graphics gr, RectBounds bounds)
1174 {
1175 boolean strokeBounds = false;
1176 boolean transformBounds = false;
1177 switch (token) {
1178 case FILL_PATH:
1179 {
1180 if (bounds != null) {
1181 shapebounds(path, bounds, BaseTransform.IDENTITY_TRANSFORM);
1182 }
1183 if (gr != null) {
1184 setupFill(gr);
1185 gr.fill(untransformedPath);
1186 }
1187 break;
1188 }
1189 case STROKE_PATH:
1190 {
1191 if (bounds != null) {
1192 strokebounds(getStroke(), untransformedPath, bounds, transform);
1193 }
1194 if (gr != null) {
1195 setupStroke(gr);
1196 gr.draw(untransformedPath);
1197 }
1198 break;
1199 }
1200 case STROKE_LINE:
1201 {
1202 float x1 = buf.getFloat();
1203 float y1 = buf.getFloat();
1204 float x2 = buf.getFloat();
1205 float y2 = buf.getFloat();
1206 if (bounds != null) {
1207 bounds.setBoundsAndSort(x1, y1, x2, y2);
1208 strokeBounds = true;
1209 transformBounds = true;
1210 }
1211 if (gr != null) {
1212 setupStroke(gr);
1213 gr.drawLine(x1, y1, x2, y2);
1214 }
1215 break;
1216 }
1217 case STROKE_RECT:
1218 case STROKE_OVAL:
1219 strokeBounds = true;
1220 case FILL_RECT:
1221 case CLEAR_RECT:
1222 case FILL_OVAL:
1223 {
1224 float x = buf.getFloat();
1225 float y = buf.getFloat();
1226 float w = buf.getFloat();
1227 float h = buf.getFloat();
1228 if (bounds != null) {
1229 bounds.setBounds(x, y, x+w, y+h);
1230 transformBounds = true;
1231 }
1232 if (gr != null) {
1233 switch (token) {
1234 case FILL_RECT:
1235 setupFill(gr);
1236 gr.fillRect(x, y, w, h);
1237 break;
1238 case FILL_OVAL:
1239 setupFill(gr);
1240 gr.fillEllipse(x, y, w, h);
1241 break;
1242 case STROKE_RECT:
1243 setupStroke(gr);
1244 gr.drawRect(x, y, w, h);
1245 break;
1246 case STROKE_OVAL:
1247 setupStroke(gr);
1248 gr.drawEllipse(x, y, w, h);
1249 break;
1250 case CLEAR_RECT:
1251 gr.setCompositeMode(CompositeMode.CLEAR);
1252 gr.fillRect(x, y, w, h);
1253 gr.setCompositeMode(CompositeMode.SRC_OVER);
1254 break;
1255 }
1256 }
1257 break;
1258 }
1259 case STROKE_ROUND_RECT:
1260 strokeBounds = true;
1261 case FILL_ROUND_RECT:
1262 {
1263 float x = buf.getFloat();
1264 float y = buf.getFloat();
1265 float w = buf.getFloat();
1266 float h = buf.getFloat();
1267 float aw = buf.getFloat();
1268 float ah = buf.getFloat();
1269 if (bounds != null) {
1270 bounds.setBounds(x, y, x+w, y+h);
1271 transformBounds = true;
1272 }
1273 if (gr != null) {
1274 if (token == FILL_ROUND_RECT) {
1275 setupFill(gr);
1276 gr.fillRoundRect(x, y, w, h, aw, ah);
1277 } else {
1278 setupStroke(gr);
1279 gr.drawRoundRect(x, y, w, h, aw, ah);
1280 }
1281 }
1282 break;
1283 }
1284 case FILL_ARC:
1285 case STROKE_ARC:
1286 {
1287 float x = buf.getFloat();
1288 float y = buf.getFloat();
1289 float w = buf.getFloat();
1290 float h = buf.getFloat();
1291 float as = buf.getFloat();
1292 float ae = buf.getFloat();
1293 TEMP_ARC.setArc(x, y, w, h, as, ae, arctype);
1294 if (token == FILL_ARC) {
1295 if (bounds != null) {
1296 shapebounds(TEMP_ARC, bounds, transform);
1297 }
1298 if (gr != null) {
1299 setupFill(gr);
1300 gr.fill(TEMP_ARC);
1301 }
1302 } else {
1303 if (bounds != null) {
1304 strokebounds(getStroke(), TEMP_ARC, bounds, transform);
1305 }
1306 if (gr != null) {
1307 setupStroke(gr);
1308 gr.draw(TEMP_ARC);
1309 }
1310 }
1311 break;
1312 }
1313 case DRAW_IMAGE:
1314 case DRAW_SUBIMAGE:
1315 {
1316 float dx = buf.getFloat();
1317 float dy = buf.getFloat();
1318 float dw = buf.getFloat();
1319 float dh = buf.getFloat();
1320 Image img = (Image) buf.getObject();
1321 float sx, sy, sw, sh;
1322 if (token == DRAW_IMAGE) {
1323 sx = sy = 0f;
1324 sw = img.getWidth();
1325 sh = img.getHeight();
1326 } else {
1327 sx = buf.getFloat();
1328 sy = buf.getFloat();
1329 sw = buf.getFloat();
1330 sh = buf.getFloat();
1331 float ps = img.getPixelScale();
1332 if (ps != 1.0f) {
1333 sx *= ps;
1334 sy *= ps;
1335 sw *= ps;
1336 sh *= ps;
1337 }
1338 }
1339 if (bounds != null) {
1340 bounds.setBounds(dx, dy, dx+dw, dy+dh);
1341 transformBounds = true;
1342 }
1343 if (gr != null) {
1344 ResourceFactory factory = gr.getResourceFactory();
1345 Texture tex =
1346 factory.getCachedTexture(img, Texture.WrapMode.CLAMP_TO_EDGE);
1347 gr.drawTexture(tex,
1348 dx, dy, dx+dw, dy+dh,
1349 sx, sy, sx+sw, sy+sh);
1350 tex.unlock();
1351 }
1352 break;
1353 }
1354 case FILL_TEXT:
1355 case STROKE_TEXT:
1356 {
1357 float x = buf.getFloat();
1358 float y = buf.getFloat();
1359 float maxWidth = buf.getFloat();
1360 boolean rtl = buf.getBoolean();
1361 String string = (String) buf.getObject();
1362 int dir = rtl ? PrismTextLayout.DIRECTION_RTL :
1363 PrismTextLayout.DIRECTION_LTR;
1364
1365 textLayout.setContent(string, pgfont);
1366 textLayout.setAlignment(align);
1367 textLayout.setDirection(dir);
1368 float xAlign = 0, yAlign = 0;
1369 BaseBounds layoutBounds = textLayout.getBounds();
1370 float layoutWidth = layoutBounds.getWidth();
1371 float layoutHeight = layoutBounds.getHeight();
1372 switch (align) {
1373 case ALIGN_RIGHT: xAlign = layoutWidth; break;
1374 case ALIGN_CENTER: xAlign = layoutWidth / 2; break;
1375 }
1376 switch (baseline) {
1377 case BASE_ALPHABETIC: yAlign = -layoutBounds.getMinY(); break;
1378 case BASE_MIDDLE: yAlign = layoutHeight / 2; break;
1379 case BASE_BOTTOM: yAlign = layoutHeight; break;
1380 }
1381 float scaleX = 1;
1382 float layoutX = 0;
1383 float layoutY = y - yAlign;
1384 if (maxWidth > 0.0 && layoutWidth > maxWidth) {
1385 float sx = maxWidth / layoutWidth;
1386 if (rtl) {
1387 layoutX = -((x + maxWidth) / sx - xAlign);
1388 scaleX = -sx;
1389 } else {
1390 layoutX = x / sx - xAlign;
1391 scaleX = sx;
1392 }
1393 } else {
1394 if (rtl) {
1395 layoutX = -(x - xAlign + layoutWidth);
1396 scaleX = -1;
1397 } else {
1398 layoutX = x - xAlign;
1399 }
1400 }
1401 if (bounds != null) {
1402 computeTextLayoutBounds(bounds, transform, scaleX, layoutX, layoutY, token);
1403 }
1404 if (gr != null) {
1405 if (scaleX != 1) {
1406 gr.scale(scaleX, 1);
1407 }
1408 ngtext.setLayoutLocation(-layoutX, -layoutY);
1409 if (token == FILL_TEXT) {
1410 ngtext.setMode(NGShape.Mode.FILL);
1411 ngtext.setFillPaint(fillPaint);
1412 if (fillPaint.isProportional() || smoothing == SMOOTH_LCD) {
1413 RectBounds textBounds = new RectBounds();
1414 computeTextLayoutBounds(textBounds, BaseTransform.IDENTITY_TRANSFORM,
1415 1, layoutX, layoutY, token);
1416 ngtext.setContentBounds(textBounds);
1417 }
1418 } else {
1419 // SMOOTH_LCD does not apply to stroked text
1420 if (strokePaint.isProportional() /* || smoothing == SMOOTH_LCD */) {
1421 RectBounds textBounds = new RectBounds();
1422 computeTextLayoutBounds(textBounds, BaseTransform.IDENTITY_TRANSFORM,
1423 1, layoutX, layoutY, token);
1424 ngtext.setContentBounds(textBounds);
1425 }
1426 ngtext.setMode(NGShape.Mode.STROKE);
1427 ngtext.setDrawStroke(getStroke());
1428 ngtext.setDrawPaint(strokePaint);
1429 }
1430 ngtext.setFont(pgfont);
1431 ngtext.setFontSmoothingType(smoothing);
1432 ngtext.setGlyphs(textLayout.getRuns());
1433 ngtext.renderContent(gr);
1434 }
1435 break;
1436 }
1437 default:
1438 throw new InternalError("Unrecognized PGCanvas rendering token: "+token);
1439 }
1440 if (bounds != null) {
1441 if (strokeBounds) {
1442 BasicStroke s = getStroke();
1443 if (s.getType() != BasicStroke.TYPE_INNER) {
1444 float lw = s.getLineWidth();
1445 if (s.getType() == BasicStroke.TYPE_CENTERED) {
1446 lw /= 2f;
1447 }
1448 bounds.grow(lw, lw);
1449 }
1450 }
1451 if (transformBounds) {
1452 txBounds(bounds, transform);
1453 }
1454 }
1455 }
1456
1457 void computeTextLayoutBounds(RectBounds bounds, BaseTransform transform,
1458 float scaleX, float layoutX, float layoutY,
1459 int token)
1460 {
1461 textLayout.getBounds(null, bounds);
1462 TEMP_TX.setTransform(transform);
1463 TEMP_TX.scale(scaleX, 1);
1464 TEMP_TX.translate(layoutX, layoutY);
1465 TEMP_TX.transform(bounds, bounds);
1466 if (token == STROKE_TEXT) {
1467 int flag = PrismTextLayout.TYPE_TEXT;
1468 Shape textShape = textLayout.getShape(flag, null);
1469 RectBounds shapeBounds = new RectBounds();
1470 strokebounds(getStroke(), textShape, shapeBounds, TEMP_TX);
1471 bounds.unionWith(shapeBounds);
1472 }
1473 }
1474
1475 static void txBounds(RectBounds bounds, BaseTransform transform) {
1476 switch (transform.getType()) {
1477 case BaseTransform.TYPE_IDENTITY:
1478 break;
1479 case BaseTransform.TYPE_TRANSLATION:
1480 float tx = (float) transform.getMxt();
1481 float ty = (float) transform.getMyt();
1482 bounds.setBounds(bounds.getMinX() + tx, bounds.getMinY() + ty,
1483 bounds.getMaxX() + tx, bounds.getMaxY() + ty);
1484 break;
1485 default:
1486 BaseBounds txbounds = transform.transform(bounds, bounds);
1487 if (txbounds != bounds) {
1488 bounds.setBounds(txbounds.getMinX(), txbounds.getMinY(),
1489 txbounds.getMaxX(), txbounds.getMaxY());
1490 }
1491 break;
1492 }
1493 }
1494
1495 static void inverseTxBounds(RectBounds bounds, BaseTransform transform) {
1496 switch (transform.getType()) {
1497 case BaseTransform.TYPE_IDENTITY:
1498 break;
1499 case BaseTransform.TYPE_TRANSLATION:
1500 float tx = (float) transform.getMxt();
1501 float ty = (float) transform.getMyt();
1502 bounds.setBounds(bounds.getMinX() - tx, bounds.getMinY() - ty,
1503 bounds.getMaxX() - tx, bounds.getMaxY() - ty);
1504 break;
1505 default:
1506 try {
1507 BaseBounds txbounds = transform.inverseTransform(bounds, bounds);
1508 if (txbounds != bounds) {
1509 bounds.setBounds(txbounds.getMinX(), txbounds.getMinY(),
1510 txbounds.getMaxX(), txbounds.getMaxY());
1511 }
1512 } catch (NoninvertibleTransformException e) {
1513 bounds.makeEmpty();
1514 }
1515 break;
1516 }
1517 }
1518
1519 public void updateBounds(float w, float h) {
1520 this.tw = (int) Math.ceil(w * highestPixelScale);
1521 this.th = (int) Math.ceil(h * highestPixelScale);
1522 geometryChanged();
1523 }
1524
1525 // Returns true if we are falling behind in rendering (i.e. we
1526 // have unrendered data at the time of the synch. This tells
1527 // the FX layer that it should consider emitting a RESET if it
1528 // detects a full-canvas clear command even if it looks like it
1529 // is superfluous.
1530 public boolean updateRendering(GrowableDataBuffer buf) {
1531 if (buf.isEmpty()) {
1532 GrowableDataBuffer.returnBuffer(buf);
1533 return (this.thebuf != null);
1534 }
1535 boolean reset = (buf.peekByte(0) == RESET);
1536 GrowableDataBuffer retbuf;
1537 if (reset || this.thebuf == null) {
1538 retbuf = this.thebuf;
1539 this.thebuf = buf;
1540 } else {
1541 this.thebuf.append(buf);
1542 retbuf = buf;
1543 }
1544 geometryChanged();
1545 if (retbuf != null) {
1546 GrowableDataBuffer.returnBuffer(retbuf);
1547 return true;
1548 }
1549 return false;
1550 }
1551
1552 class RenderInput extends Effect {
1553 float x, y, w, h;
1554 int token;
1555 GrowableDataBuffer buf;
1556 Affine2D savedBoundsTx = new Affine2D();
1557
1558 public RenderInput(int token, GrowableDataBuffer buf,
1559 BaseTransform boundsTx, RectBounds rb)
1560 {
1561 this.token = token;
1562 this.buf = buf;
1563 savedBoundsTx.setTransform(boundsTx);
1564 this.x = rb.getMinX();
1565 this.y = rb.getMinY();
1566 this.w = rb.getWidth();
1567 this.h = rb.getHeight();
1568 }
1569
1570 @Override
1571 public ImageData filter(FilterContext fctx, BaseTransform transform,
1572 Rectangle outputClip, Object renderHelper,
1573 Effect defaultInput)
1574 {
1575 BaseBounds bounds = getBounds(transform, defaultInput);
1576 if (outputClip != null) {
1577 bounds.intersectWith(outputClip);
1578 }
1579 Rectangle r = new Rectangle(bounds);
1580 if (r.width < 1) r.width = 1;
1581 if (r.height < 1) r.height = 1;
1582 PrDrawable ret = (PrDrawable) Effect.getCompatibleImage(fctx, r.width, r.height);
1583 if (ret != null) {
1584 Graphics g = ret.createGraphics();
1585 g.setExtraAlpha(globalAlpha);
1586 g.translate(-r.x, -r.y);
1587 if (transform != null) {
1588 g.transform(transform);
1589 }
1590 buf.restore();
1591 handleRenderOp(token, buf, g, null);
1592 }
1593 return new ImageData(fctx, ret, r);
1594 }
1595
1596 @Override
1597 public AccelType getAccelType(FilterContext fctx) {
1598 throw new UnsupportedOperationException("Not supported yet.");
1599 }
1600
1601 @Override
1602 public BaseBounds getBounds(BaseTransform transform, Effect defaultInput) {
1603 RectBounds ret = new RectBounds(x, y, x + w, y + h);
1604 if (!transform.equals(savedBoundsTx)) {
1605 inverseTxBounds(ret, savedBoundsTx);
1606 txBounds(ret, transform);
1607 }
1608 return ret;
1609 }
1610
1611 @Override
1612 public boolean reducesOpaquePixels() {
1613 return false;
1614 }
1615
1616 @Override
1617 public DirtyRegionContainer getDirtyRegions(Effect defaultInput, DirtyRegionPool regionPool) {
1618 return null; // Never called
1619 }
1620
1621 }
1622
1623 static class MyBlend extends Blend {
1624 public MyBlend(Mode mode, Effect bottomInput, Effect topInput) {
1625 super(mode, bottomInput, topInput);
1626 }
1627
1628 @Override
1629 public Rectangle getResultBounds(BaseTransform transform,
1630 Rectangle outputClip,
1631 ImageData... inputDatas)
1632 {
1633 // There is a bug in the ImageData class that means that the
1634 // outputClip will not be taken into account, so we override
1635 // here and apply it ourselves.
1636 Rectangle r = super.getResultBounds(transform, outputClip, inputDatas);
1637 r.intersectWith(outputClip);
1638 return r;
1639 }
1640 }
1641
1642 static class EffectInput extends Effect {
1643 RTTexture tex;
1644 float pixelscale;
1645
1646 EffectInput(RTTexture tex) {
1647 this.tex = tex;
1648 this.pixelscale = 1.0f;
1649 }
1650
1651 public void setPixelScale(float scale) {
1652 this.pixelscale = scale;
1653 }
1654
1655 @Override
1656 public ImageData filter(FilterContext fctx, BaseTransform transform,
1657 Rectangle outputClip, Object renderHelper,
1658 Effect defaultInput)
1659 {
1660 Filterable f = PrDrawable.create(fctx, tex);
1661 Rectangle r = new Rectangle(tex.getContentWidth(), tex.getContentHeight());
1662 f.lock();
1663 ImageData id = new ImageData(fctx, f, r);
1664 id.setReusable(true);
1665 if (pixelscale != 1.0f || !transform.isIdentity()) {
1666 Affine2D a2d = new Affine2D();
1667 a2d.scale(1.0f / pixelscale, 1.0f / pixelscale);
1668 a2d.concatenate(transform);
1669 id = id.transform(a2d);
1670 }
1671 return id;
1672 }
1673
1674 @Override
1675 public AccelType getAccelType(FilterContext fctx) {
1676 throw new UnsupportedOperationException("Not supported yet.");
1677 }
1678
1679 @Override
1680 public BaseBounds getBounds(BaseTransform transform, Effect defaultInput) {
1681 Rectangle r = new Rectangle(tex.getContentWidth(), tex.getContentHeight());
1682 return transformBounds(transform, new RectBounds(r));
1683 }
1684
1685 @Override
1686 public boolean reducesOpaquePixels() {
1687 return false;
1688 }
1689
1690 @Override
1691 public DirtyRegionContainer getDirtyRegions(Effect defaultInput, DirtyRegionPool regionPool) {
1692 return null; // Never called
1693 }
1694 }
1695 }