2 * Copyright (C) 2014 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 #include "CanvasProperty.h"
19 #include "RenderNode.h"
20 #include "hwui/Canvas.h"
23 #include <SkClipStack.h>
24 #include <SkDrawable.h>
27 #include <SkDrawFilter.h>
28 #include <SkGraphics.h>
33 #include <SkTemplates.h>
35 #include "VectorDrawable.h"
41 // Holds an SkCanvas reference plus additional native data.
42 class SkiaCanvas : public Canvas {
44 explicit SkiaCanvas(const SkBitmap& bitmap);
47 * Create a new SkiaCanvas.
49 * @param canvas SkCanvas to handle calls made to this SkiaCanvas. Must
50 * not be NULL. This constructor will ref() the SkCanvas, and unref()
51 * it in its destructor.
53 explicit SkiaCanvas(SkCanvas* canvas) : mCanvas(canvas) {
58 virtual SkCanvas* asSkCanvas() override {
62 virtual void resetRecording(int width, int height) override {
63 LOG_ALWAYS_FATAL("SkiaCanvas cannot be reset as a recording canvas");
66 virtual uirenderer::DisplayList* finishRecording() override {
67 LOG_ALWAYS_FATAL("SkiaCanvas does not produce a DisplayList");
70 virtual void insertReorderBarrier(bool enableReorder) override {
71 LOG_ALWAYS_FATAL("SkiaCanvas does not support reordering barriers");
74 virtual void setBitmap(const SkBitmap& bitmap) override;
76 virtual bool isOpaque() override;
77 virtual int width() override;
78 virtual int height() override;
80 virtual void setHighContrastText(bool highContrastText) override {
81 mHighContrastText = highContrastText;
83 virtual bool isHighContrastText() override { return mHighContrastText; }
85 virtual int getSaveCount() const override;
86 virtual int save(SaveFlags::Flags flags) override;
87 virtual void restore() override;
88 virtual void restoreToCount(int saveCount) override;
90 virtual int saveLayer(float left, float top, float right, float bottom,
91 const SkPaint* paint, SaveFlags::Flags flags) override;
92 virtual int saveLayerAlpha(float left, float top, float right, float bottom,
93 int alpha, SaveFlags::Flags flags) override;
95 virtual void getMatrix(SkMatrix* outMatrix) const override;
96 virtual void setMatrix(const SkMatrix& matrix) override;
97 virtual void concat(const SkMatrix& matrix) override;
98 virtual void rotate(float degrees) override;
99 virtual void scale(float sx, float sy) override;
100 virtual void skew(float sx, float sy) override;
101 virtual void translate(float dx, float dy) override;
103 virtual bool getClipBounds(SkRect* outRect) const override;
104 virtual bool quickRejectRect(float left, float top, float right, float bottom) const override;
105 virtual bool quickRejectPath(const SkPath& path) const override;
106 virtual bool clipRect(float left, float top, float right, float bottom,
107 SkRegion::Op op) override;
108 virtual bool clipPath(const SkPath* path, SkRegion::Op op) override;
109 virtual bool clipRegion(const SkRegion* region, SkRegion::Op op) override;
111 virtual SkDrawFilter* getDrawFilter() override;
112 virtual void setDrawFilter(SkDrawFilter* drawFilter) override;
114 virtual void drawColor(int color, SkXfermode::Mode mode) override;
115 virtual void drawPaint(const SkPaint& paint) override;
117 virtual void drawPoint(float x, float y, const SkPaint& paint) override;
118 virtual void drawPoints(const float* points, int count, const SkPaint& paint) override;
119 virtual void drawLine(float startX, float startY, float stopX, float stopY,
120 const SkPaint& paint) override;
121 virtual void drawLines(const float* points, int count, const SkPaint& paint) override;
122 virtual void drawRect(float left, float top, float right, float bottom,
123 const SkPaint& paint) override;
124 virtual void drawRegion(const SkRegion& region, const SkPaint& paint) override;
125 virtual void drawRoundRect(float left, float top, float right, float bottom,
126 float rx, float ry, const SkPaint& paint) override;
127 virtual void drawCircle(float x, float y, float radius, const SkPaint& paint) override;
128 virtual void drawOval(float left, float top, float right, float bottom,
129 const SkPaint& paint) override;
130 virtual void drawArc(float left, float top, float right, float bottom,
131 float startAngle, float sweepAngle, bool useCenter, const SkPaint& paint) override;
132 virtual void drawPath(const SkPath& path, const SkPaint& paint) override;
133 virtual void drawVertices(SkCanvas::VertexMode vertexMode, int vertexCount,
134 const float* verts, const float* tex, const int* colors,
135 const uint16_t* indices, int indexCount, const SkPaint& paint) override;
137 virtual void drawBitmap(const SkBitmap& bitmap, float left, float top,
138 const SkPaint* paint) override;
139 virtual void drawBitmap(const SkBitmap& bitmap, const SkMatrix& matrix,
140 const SkPaint* paint) override;
141 virtual void drawBitmap(const SkBitmap& bitmap, float srcLeft, float srcTop,
142 float srcRight, float srcBottom, float dstLeft, float dstTop,
143 float dstRight, float dstBottom, const SkPaint* paint) override;
144 virtual void drawBitmapMesh(const SkBitmap& bitmap, int meshWidth, int meshHeight,
145 const float* vertices, const int* colors, const SkPaint* paint) override;
146 virtual void drawNinePatch(const SkBitmap& bitmap, const android::Res_png_9patch& chunk,
147 float dstLeft, float dstTop, float dstRight, float dstBottom,
148 const SkPaint* paint) override;
150 virtual bool drawTextAbsolutePos() const override { return true; }
151 virtual void drawVectorDrawable(VectorDrawableRoot* vectorDrawable) override;
153 virtual void drawRoundRect(uirenderer::CanvasPropertyPrimitive* left,
154 uirenderer::CanvasPropertyPrimitive* top, uirenderer::CanvasPropertyPrimitive* right,
155 uirenderer::CanvasPropertyPrimitive* bottom, uirenderer::CanvasPropertyPrimitive* rx,
156 uirenderer::CanvasPropertyPrimitive* ry, uirenderer::CanvasPropertyPaint* paint) override;
157 virtual void drawCircle(uirenderer::CanvasPropertyPrimitive* x,
158 uirenderer::CanvasPropertyPrimitive* y, uirenderer::CanvasPropertyPrimitive* radius,
159 uirenderer::CanvasPropertyPaint* paint) override;
161 virtual void drawLayer(uirenderer::DeferredLayerUpdater* layerHandle) override;
162 virtual void drawRenderNode(uirenderer::RenderNode* renderNode) override;
163 virtual void callDrawGLFunction(Functor* functor,
164 uirenderer::GlFunctorLifecycleListener* listener) override;
167 virtual void drawGlyphs(const uint16_t* text, const float* positions, int count,
168 const SkPaint& paint, float x, float y,
169 float boundsLeft, float boundsTop, float boundsRight, float boundsBottom,
170 float totalAdvance) override;
171 virtual void drawGlyphsOnPath(const uint16_t* glyphs, int count, const SkPath& path,
172 float hOffset, float vOffset, const SkPaint& paint) override;
177 SaveFlags::Flags saveFlags;
180 bool mHighContrastText = false;
182 void recordPartialSave(SaveFlags::Flags flags);
183 void saveClipsForFrame(SkTArray<SkClipStack::Element>& clips, int frameSaveCount);
184 void applyClips(const SkTArray<SkClipStack::Element>& clips);
186 void drawPoints(const float* points, int count, const SkPaint& paint,
187 SkCanvas::PointMode mode);
189 SkAutoTUnref<SkCanvas> mCanvas;
190 std::unique_ptr<SkDeque> mSaveStack; // lazily allocated, tracks partial saves.
193 Canvas* Canvas::create_canvas(const SkBitmap& bitmap) {
194 return new SkiaCanvas(bitmap);
197 Canvas* Canvas::create_canvas(SkCanvas* skiaCanvas) {
198 return new SkiaCanvas(skiaCanvas);
201 SkiaCanvas::SkiaCanvas(const SkBitmap& bitmap) {
202 mCanvas.reset(new SkCanvas(bitmap));
205 // ----------------------------------------------------------------------------
206 // Canvas state operations: Replace Bitmap
207 // ----------------------------------------------------------------------------
209 class ClipCopier : public SkCanvas::ClipVisitor {
211 ClipCopier(SkCanvas* dstCanvas) : m_dstCanvas(dstCanvas) {}
213 virtual void clipRect(const SkRect& rect, SkRegion::Op op, bool antialias) {
214 m_dstCanvas->clipRect(rect, op, antialias);
216 virtual void clipRRect(const SkRRect& rrect, SkRegion::Op op, bool antialias) {
217 m_dstCanvas->clipRRect(rrect, op, antialias);
219 virtual void clipPath(const SkPath& path, SkRegion::Op op, bool antialias) {
220 m_dstCanvas->clipPath(path, op, antialias);
224 SkCanvas* m_dstCanvas;
227 void SkiaCanvas::setBitmap(const SkBitmap& bitmap) {
228 SkCanvas* newCanvas = new SkCanvas(bitmap);
230 if (!bitmap.isNull()) {
231 // Copy the canvas matrix & clip state.
232 newCanvas->setMatrix(mCanvas->getTotalMatrix());
234 ClipCopier copier(newCanvas);
235 mCanvas->replayClips(&copier);
238 // unrefs the existing canvas
239 mCanvas.reset(newCanvas);
241 // clean up the old save stack
242 mSaveStack.reset(NULL);
245 // ----------------------------------------------------------------------------
246 // Canvas state operations
247 // ----------------------------------------------------------------------------
249 bool SkiaCanvas::isOpaque() {
250 return mCanvas->imageInfo().isOpaque();
253 int SkiaCanvas::width() {
254 return mCanvas->imageInfo().width();
257 int SkiaCanvas::height() {
258 return mCanvas->imageInfo().height();
261 // ----------------------------------------------------------------------------
262 // Canvas state operations: Save (layer)
263 // ----------------------------------------------------------------------------
265 int SkiaCanvas::getSaveCount() const {
266 return mCanvas->getSaveCount();
269 int SkiaCanvas::save(SaveFlags::Flags flags) {
270 int count = mCanvas->save();
271 recordPartialSave(flags);
275 // The SkiaCanvas::restore operation layers on the capability to preserve
276 // either (or both) the matrix and/or clip state after a SkCanvas::restore
277 // operation. It does this by explicitly saving off the clip & matrix state
278 // when requested and playing it back after the SkCanvas::restore.
279 void SkiaCanvas::restore() {
280 const SaveRec* rec = (NULL == mSaveStack.get())
282 : static_cast<SaveRec*>(mSaveStack->back());
283 int currentSaveCount = mCanvas->getSaveCount();
284 SkASSERT(NULL == rec || currentSaveCount >= rec->saveCount);
286 if (NULL == rec || rec->saveCount != currentSaveCount) {
287 // Fast path - no record for this frame.
292 bool preserveMatrix = !(rec->saveFlags & SaveFlags::Matrix);
293 bool preserveClip = !(rec->saveFlags & SaveFlags::Clip);
295 SkMatrix savedMatrix;
296 if (preserveMatrix) {
297 savedMatrix = mCanvas->getTotalMatrix();
300 SkTArray<SkClipStack::Element> savedClips;
301 int topClipStackFrame = mCanvas->getClipStack()->getSaveCount();
303 saveClipsForFrame(savedClips, topClipStackFrame);
308 if (preserveMatrix) {
309 mCanvas->setMatrix(savedMatrix);
312 if (preserveClip && !savedClips.empty() &&
313 topClipStackFrame != mCanvas->getClipStack()->getSaveCount()) {
314 // Only reapply the saved clips if the top clip stack frame was actually
315 // popped by restore(). If it wasn't, it means it doesn't belong to the
316 // restored canvas frame (SkCanvas lazy save/restore kicked in).
317 applyClips(savedClips);
320 mSaveStack->pop_back();
323 void SkiaCanvas::restoreToCount(int restoreCount) {
324 while (mCanvas->getSaveCount() > restoreCount) {
329 static inline SkCanvas::SaveLayerFlags layerFlags(SaveFlags::Flags flags) {
330 SkCanvas::SaveLayerFlags layerFlags = 0;
332 if (!(flags & SaveFlags::HasAlphaLayer)) {
333 layerFlags |= SkCanvas::kIsOpaque_SaveLayerFlag;
336 if (!(flags & SaveFlags::ClipToLayer)) {
337 layerFlags |= SkCanvas::kDontClipToLayer_Legacy_SaveLayerFlag;
343 int SkiaCanvas::saveLayer(float left, float top, float right, float bottom,
344 const SkPaint* paint, SaveFlags::Flags flags) {
345 const SkRect bounds = SkRect::MakeLTRB(left, top, right, bottom);
346 const SkCanvas::SaveLayerRec rec(&bounds, paint, layerFlags(flags));
348 int count = mCanvas->saveLayer(rec);
349 recordPartialSave(flags);
353 int SkiaCanvas::saveLayerAlpha(float left, float top, float right, float bottom,
354 int alpha, SaveFlags::Flags flags) {
355 SkTLazy<SkPaint> alphaPaint;
356 if (static_cast<unsigned>(alpha) < 0xFF) {
357 alphaPaint.init()->setAlpha(alpha);
360 return this->saveLayer(left, top, right, bottom, alphaPaint.getMaybeNull(),
364 // ----------------------------------------------------------------------------
365 // functions to emulate legacy SaveFlags (i.e. independent matrix/clip flags)
366 // ----------------------------------------------------------------------------
368 void SkiaCanvas::recordPartialSave(SaveFlags::Flags flags) {
369 // A partial save is a save operation which doesn't capture the full canvas state.
370 // (either SaveFlags::Matrix or SaveFlags::Clip is missing).
372 // Mask-out non canvas state bits.
373 flags &= SaveFlags::MatrixClip;
375 if (flags == SaveFlags::MatrixClip) {
376 // not a partial save.
380 if (NULL == mSaveStack.get()) {
381 mSaveStack.reset(new SkDeque(sizeof(struct SaveRec), 8));
384 SaveRec* rec = static_cast<SaveRec*>(mSaveStack->push_back());
385 rec->saveCount = mCanvas->getSaveCount();
386 rec->saveFlags = flags;
389 void SkiaCanvas::saveClipsForFrame(SkTArray<SkClipStack::Element>& clips,
390 int saveCountToBackup) {
391 // Each SkClipStack::Element stores the index of the canvas save
392 // with which it is associated. Backup only those Elements that
393 // are associated with 'saveCountToBackup'
394 SkClipStack::Iter clipIterator(*mCanvas->getClipStack(),
395 SkClipStack::Iter::kTop_IterStart);
396 while (const SkClipStack::Element* elem = clipIterator.prev()) {
397 if (elem->getSaveCount() < saveCountToBackup) {
398 // done with the target save count.
401 SkASSERT(elem->getSaveCount() == saveCountToBackup);
402 clips.push_back(*elem);
406 void SkiaCanvas::applyClips(const SkTArray<SkClipStack::Element>& clips) {
407 ClipCopier clipCopier(mCanvas);
409 // The clip stack stores clips in device space.
410 SkMatrix origMatrix = mCanvas->getTotalMatrix();
411 mCanvas->resetMatrix();
413 // We pushed the clips in reverse order.
414 for (int i = clips.count() - 1; i >= 0; --i) {
415 clips[i].replay(&clipCopier);
418 mCanvas->setMatrix(origMatrix);
421 // ----------------------------------------------------------------------------
422 // Canvas state operations: Matrix
423 // ----------------------------------------------------------------------------
425 void SkiaCanvas::getMatrix(SkMatrix* outMatrix) const {
426 *outMatrix = mCanvas->getTotalMatrix();
429 void SkiaCanvas::setMatrix(const SkMatrix& matrix) {
430 mCanvas->setMatrix(matrix);
433 void SkiaCanvas::concat(const SkMatrix& matrix) {
434 mCanvas->concat(matrix);
437 void SkiaCanvas::rotate(float degrees) {
438 mCanvas->rotate(degrees);
441 void SkiaCanvas::scale(float sx, float sy) {
442 mCanvas->scale(sx, sy);
445 void SkiaCanvas::skew(float sx, float sy) {
446 mCanvas->skew(sx, sy);
449 void SkiaCanvas::translate(float dx, float dy) {
450 mCanvas->translate(dx, dy);
453 // ----------------------------------------------------------------------------
454 // Canvas state operations: Clips
455 // ----------------------------------------------------------------------------
457 // This function is a mirror of SkCanvas::getClipBounds except that it does
458 // not outset the edge of the clip to account for anti-aliasing. There is
459 // a skia bug to investigate pushing this logic into back into skia.
460 // (see https://code.google.com/p/skia/issues/detail?id=1303)
461 bool SkiaCanvas::getClipBounds(SkRect* outRect) const {
463 if (!mCanvas->getClipDeviceBounds(&ibounds)) {
468 // if we can't invert the CTM, we can't return local clip bounds
469 if (!mCanvas->getTotalMatrix().invert(&inverse)) {
476 if (NULL != outRect) {
477 SkRect r = SkRect::Make(ibounds);
478 inverse.mapRect(outRect, r);
483 bool SkiaCanvas::quickRejectRect(float left, float top, float right, float bottom) const {
484 SkRect bounds = SkRect::MakeLTRB(left, top, right, bottom);
485 return mCanvas->quickReject(bounds);
488 bool SkiaCanvas::quickRejectPath(const SkPath& path) const {
489 return mCanvas->quickReject(path);
492 bool SkiaCanvas::clipRect(float left, float top, float right, float bottom, SkRegion::Op op) {
493 SkRect rect = SkRect::MakeLTRB(left, top, right, bottom);
494 mCanvas->clipRect(rect, op);
495 return !mCanvas->isClipEmpty();
498 bool SkiaCanvas::clipPath(const SkPath* path, SkRegion::Op op) {
499 mCanvas->clipPath(*path, op);
500 return !mCanvas->isClipEmpty();
503 bool SkiaCanvas::clipRegion(const SkRegion* region, SkRegion::Op op) {
505 if (region->getBoundaryPath(&rgnPath)) {
506 // The region is specified in device space.
507 SkMatrix savedMatrix = mCanvas->getTotalMatrix();
508 mCanvas->resetMatrix();
509 mCanvas->clipPath(rgnPath, op);
510 mCanvas->setMatrix(savedMatrix);
512 mCanvas->clipRect(SkRect::MakeEmpty(), op);
514 return !mCanvas->isClipEmpty();
517 // ----------------------------------------------------------------------------
518 // Canvas state operations: Filters
519 // ----------------------------------------------------------------------------
521 SkDrawFilter* SkiaCanvas::getDrawFilter() {
522 return mCanvas->getDrawFilter();
525 void SkiaCanvas::setDrawFilter(SkDrawFilter* drawFilter) {
526 mCanvas->setDrawFilter(drawFilter);
529 // ----------------------------------------------------------------------------
530 // Canvas draw operations
531 // ----------------------------------------------------------------------------
533 void SkiaCanvas::drawColor(int color, SkXfermode::Mode mode) {
534 mCanvas->drawColor(color, mode);
537 void SkiaCanvas::drawPaint(const SkPaint& paint) {
538 mCanvas->drawPaint(paint);
541 // ----------------------------------------------------------------------------
542 // Canvas draw operations: Geometry
543 // ----------------------------------------------------------------------------
545 void SkiaCanvas::drawPoints(const float* points, int count, const SkPaint& paint,
546 SkCanvas::PointMode mode) {
547 // convert the floats into SkPoints
548 count >>= 1; // now it is the number of points
549 std::unique_ptr<SkPoint[]> pts(new SkPoint[count]);
550 for (int i = 0; i < count; i++) {
551 pts[i].set(points[0], points[1]);
554 mCanvas->drawPoints(mode, count, pts.get(), paint);
558 void SkiaCanvas::drawPoint(float x, float y, const SkPaint& paint) {
559 mCanvas->drawPoint(x, y, paint);
562 void SkiaCanvas::drawPoints(const float* points, int count, const SkPaint& paint) {
563 this->drawPoints(points, count, paint, SkCanvas::kPoints_PointMode);
566 void SkiaCanvas::drawLine(float startX, float startY, float stopX, float stopY,
567 const SkPaint& paint) {
568 mCanvas->drawLine(startX, startY, stopX, stopY, paint);
571 void SkiaCanvas::drawLines(const float* points, int count, const SkPaint& paint) {
572 this->drawPoints(points, count, paint, SkCanvas::kLines_PointMode);
575 void SkiaCanvas::drawRect(float left, float top, float right, float bottom,
576 const SkPaint& paint) {
577 mCanvas->drawRectCoords(left, top, right, bottom, paint);
581 void SkiaCanvas::drawRegion(const SkRegion& region, const SkPaint& paint) {
582 SkRegion::Iterator it(region);
584 mCanvas->drawRect(SkRect::Make(it.rect()), paint);
589 void SkiaCanvas::drawRoundRect(float left, float top, float right, float bottom,
590 float rx, float ry, const SkPaint& paint) {
591 SkRect rect = SkRect::MakeLTRB(left, top, right, bottom);
592 mCanvas->drawRoundRect(rect, rx, ry, paint);
595 void SkiaCanvas::drawCircle(float x, float y, float radius, const SkPaint& paint) {
596 mCanvas->drawCircle(x, y, radius, paint);
599 void SkiaCanvas::drawOval(float left, float top, float right, float bottom, const SkPaint& paint) {
600 SkRect oval = SkRect::MakeLTRB(left, top, right, bottom);
601 mCanvas->drawOval(oval, paint);
604 void SkiaCanvas::drawArc(float left, float top, float right, float bottom,
605 float startAngle, float sweepAngle, bool useCenter, const SkPaint& paint) {
606 SkRect arc = SkRect::MakeLTRB(left, top, right, bottom);
607 mCanvas->drawArc(arc, startAngle, sweepAngle, useCenter, paint);
610 void SkiaCanvas::drawPath(const SkPath& path, const SkPaint& paint) {
611 mCanvas->drawPath(path, paint);
614 void SkiaCanvas::drawVertices(SkCanvas::VertexMode vertexMode, int vertexCount,
615 const float* verts, const float* texs, const int* colors,
616 const uint16_t* indices, int indexCount, const SkPaint& paint) {
617 #ifndef SK_SCALAR_IS_FLOAT
618 SkDEBUGFAIL("SkScalar must be a float for these conversions to be valid");
620 const int ptCount = vertexCount >> 1;
621 mCanvas->drawVertices(vertexMode, ptCount, (SkPoint*)verts, (SkPoint*)texs,
622 (SkColor*)colors, NULL, indices, indexCount, paint);
625 // ----------------------------------------------------------------------------
626 // Canvas draw operations: Bitmaps
627 // ----------------------------------------------------------------------------
629 void SkiaCanvas::drawBitmap(const SkBitmap& bitmap, float left, float top, const SkPaint* paint) {
630 mCanvas->drawBitmap(bitmap, left, top, paint);
633 void SkiaCanvas::drawBitmap(const SkBitmap& bitmap, const SkMatrix& matrix, const SkPaint* paint) {
634 SkAutoCanvasRestore acr(mCanvas, true);
635 mCanvas->concat(matrix);
636 mCanvas->drawBitmap(bitmap, 0, 0, paint);
639 void SkiaCanvas::drawBitmap(const SkBitmap& bitmap, float srcLeft, float srcTop,
640 float srcRight, float srcBottom, float dstLeft, float dstTop,
641 float dstRight, float dstBottom, const SkPaint* paint) {
642 SkRect srcRect = SkRect::MakeLTRB(srcLeft, srcTop, srcRight, srcBottom);
643 SkRect dstRect = SkRect::MakeLTRB(dstLeft, dstTop, dstRight, dstBottom);
644 mCanvas->drawBitmapRect(bitmap, srcRect, dstRect, paint);
647 void SkiaCanvas::drawBitmapMesh(const SkBitmap& bitmap, int meshWidth, int meshHeight,
648 const float* vertices, const int* colors, const SkPaint* paint) {
650 const int ptCount = (meshWidth + 1) * (meshHeight + 1);
651 const int indexCount = meshWidth * meshHeight * 6;
653 /* Our temp storage holds 2 or 3 arrays.
654 texture points [ptCount * sizeof(SkPoint)]
655 optionally vertex points [ptCount * sizeof(SkPoint)] if we need a
656 copy to convert from float to fixed
657 indices [ptCount * sizeof(uint16_t)]
659 ssize_t storageSize = ptCount * sizeof(SkPoint); // texs[]
660 storageSize += indexCount * sizeof(uint16_t); // indices[]
663 #ifndef SK_SCALAR_IS_FLOAT
664 SkDEBUGFAIL("SkScalar must be a float for these conversions to be valid");
666 std::unique_ptr<char[]> storage(new char[storageSize]);
667 SkPoint* texs = (SkPoint*)storage.get();
668 uint16_t* indices = (uint16_t*)(texs + ptCount);
670 // cons up texture coordinates and indices
672 const SkScalar w = SkIntToScalar(bitmap.width());
673 const SkScalar h = SkIntToScalar(bitmap.height());
674 const SkScalar dx = w / meshWidth;
675 const SkScalar dy = h / meshHeight;
677 SkPoint* texsPtr = texs;
679 for (int i = 0; i <= meshHeight; i++) {
680 if (i == meshHeight) {
681 y = h; // to ensure numerically we hit h exactly
684 for (int j = 0; j < meshWidth; j++) {
693 SkASSERT(texsPtr - texs == ptCount);
698 uint16_t* indexPtr = indices;
700 for (int i = 0; i < meshHeight; i++) {
701 for (int j = 0; j < meshWidth; j++) {
702 // lower-left triangle
704 *indexPtr++ = index + meshWidth + 1;
705 *indexPtr++ = index + meshWidth + 2;
706 // upper-right triangle
708 *indexPtr++ = index + meshWidth + 2;
709 *indexPtr++ = index + 1;
710 // bump to the next cell
713 // bump to the next row
716 SkASSERT(indexPtr - indices == indexCount);
717 SkASSERT((char*)indexPtr - (char*)storage.get() == storageSize);
720 // double-check that we have legal indices
723 for (int i = 0; i < indexCount; i++) {
724 SkASSERT((unsigned)indices[i] < (unsigned)ptCount);
729 // cons-up a shader for the bitmap
734 SkShader* shader = SkShader::CreateBitmapShader(bitmap,
735 SkShader::kClamp_TileMode,
736 SkShader::kClamp_TileMode);
737 SkSafeUnref(tmpPaint.setShader(shader));
739 mCanvas->drawVertices(SkCanvas::kTriangles_VertexMode, ptCount, (SkPoint*)vertices,
740 texs, (const SkColor*)colors, NULL, indices,
741 indexCount, tmpPaint);
744 void SkiaCanvas::drawNinePatch(const SkBitmap& bitmap, const Res_png_9patch& chunk,
745 float dstLeft, float dstTop, float dstRight, float dstBottom, const SkPaint* paint) {
746 SkRect bounds = SkRect::MakeLTRB(dstLeft, dstTop, dstRight, dstBottom);
747 NinePatch::Draw(mCanvas, bounds, bitmap, chunk, paint, nullptr);
750 void SkiaCanvas::drawVectorDrawable(VectorDrawableRoot* vectorDrawable) {
751 vectorDrawable->drawStaging(this);
754 // ----------------------------------------------------------------------------
755 // Canvas draw operations: Text
756 // ----------------------------------------------------------------------------
758 void SkiaCanvas::drawGlyphs(const uint16_t* text, const float* positions, int count,
759 const SkPaint& paint, float x, float y,
760 float boundsLeft, float boundsTop, float boundsRight, float boundsBottom,
761 float totalAdvance) {
762 static_assert(sizeof(SkPoint) == sizeof(float)*2, "SkPoint is no longer two floats");
763 mCanvas->drawPosText(text, count << 1, reinterpret_cast<const SkPoint*>(positions), paint);
764 drawTextDecorations(x, y, totalAdvance, paint);
767 void SkiaCanvas::drawGlyphsOnPath(const uint16_t* glyphs, int count, const SkPath& path,
768 float hOffset, float vOffset, const SkPaint& paint) {
769 mCanvas->drawTextOnPathHV(glyphs, count << 1, path, hOffset, vOffset, paint);
772 // ----------------------------------------------------------------------------
773 // Canvas draw operations: Animations
774 // ----------------------------------------------------------------------------
776 class AnimatedRoundRect : public SkDrawable {
778 AnimatedRoundRect(uirenderer::CanvasPropertyPrimitive* left,
779 uirenderer::CanvasPropertyPrimitive* top, uirenderer::CanvasPropertyPrimitive* right,
780 uirenderer::CanvasPropertyPrimitive* bottom, uirenderer::CanvasPropertyPrimitive* rx,
781 uirenderer::CanvasPropertyPrimitive* ry, uirenderer::CanvasPropertyPaint* p) :
782 mLeft(left), mTop(top), mRight(right), mBottom(bottom), mRx(rx), mRy(ry), mPaint(p) {}
785 virtual SkRect onGetBounds() override {
786 return SkRect::MakeLTRB(mLeft->value, mTop->value, mRight->value, mBottom->value);
788 virtual void onDraw(SkCanvas* canvas) override {
789 SkRect rect = SkRect::MakeLTRB(mLeft->value, mTop->value, mRight->value, mBottom->value);
790 canvas->drawRoundRect(rect, mRx->value, mRy->value, mPaint->value);
794 sp<uirenderer::CanvasPropertyPrimitive> mLeft;
795 sp<uirenderer::CanvasPropertyPrimitive> mTop;
796 sp<uirenderer::CanvasPropertyPrimitive> mRight;
797 sp<uirenderer::CanvasPropertyPrimitive> mBottom;
798 sp<uirenderer::CanvasPropertyPrimitive> mRx;
799 sp<uirenderer::CanvasPropertyPrimitive> mRy;
800 sp<uirenderer::CanvasPropertyPaint> mPaint;
803 class AnimatedCircle : public SkDrawable {
805 AnimatedCircle(uirenderer::CanvasPropertyPrimitive* x, uirenderer::CanvasPropertyPrimitive* y,
806 uirenderer::CanvasPropertyPrimitive* radius, uirenderer::CanvasPropertyPaint* paint) :
807 mX(x), mY(y), mRadius(radius), mPaint(paint) {}
810 virtual SkRect onGetBounds() override {
811 const float x = mX->value;
812 const float y = mY->value;
813 const float radius = mRadius->value;
814 return SkRect::MakeLTRB(x - radius, y - radius, x + radius, y + radius);
816 virtual void onDraw(SkCanvas* canvas) override {
817 canvas->drawCircle(mX->value, mY->value, mRadius->value, mPaint->value);
821 sp<uirenderer::CanvasPropertyPrimitive> mX;
822 sp<uirenderer::CanvasPropertyPrimitive> mY;
823 sp<uirenderer::CanvasPropertyPrimitive> mRadius;
824 sp<uirenderer::CanvasPropertyPaint> mPaint;
827 void SkiaCanvas::drawRoundRect(uirenderer::CanvasPropertyPrimitive* left,
828 uirenderer::CanvasPropertyPrimitive* top, uirenderer::CanvasPropertyPrimitive* right,
829 uirenderer::CanvasPropertyPrimitive* bottom, uirenderer::CanvasPropertyPrimitive* rx,
830 uirenderer::CanvasPropertyPrimitive* ry, uirenderer::CanvasPropertyPaint* paint) {
831 SkAutoTUnref<AnimatedRoundRect> drawable(
832 new AnimatedRoundRect(left, top, right, bottom, rx, ry, paint));
833 mCanvas->drawDrawable(drawable.get());
836 void SkiaCanvas::drawCircle(uirenderer::CanvasPropertyPrimitive* x, uirenderer::CanvasPropertyPrimitive* y,
837 uirenderer::CanvasPropertyPrimitive* radius, uirenderer::CanvasPropertyPaint* paint) {
838 SkAutoTUnref<AnimatedCircle> drawable(new AnimatedCircle(x, y, radius, paint));
839 mCanvas->drawDrawable(drawable.get());
842 // ----------------------------------------------------------------------------
843 // Canvas draw operations: View System
844 // ----------------------------------------------------------------------------
846 void SkiaCanvas::drawLayer(uirenderer::DeferredLayerUpdater* layer) { }
848 void SkiaCanvas::drawRenderNode(uirenderer::RenderNode* renderNode) { }
850 void SkiaCanvas::callDrawGLFunction(Functor* functor,
851 uirenderer::GlFunctorLifecycleListener* listener) { }
853 } // namespace android