SkiaCanvas.cpp revision 6bbf68d05a9deb335fc693b4a64651aea1b4e9e0
18872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger/* 28872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger * Copyright (C) 2014 The Android Open Source Project 38872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger * 48872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger * Licensed under the Apache License, Version 2.0 (the "License"); 58872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger * you may not use this file except in compliance with the License. 68872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger * You may obtain a copy of the License at 78872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger * 88872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger * http://www.apache.org/licenses/LICENSE-2.0 98872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger * 108872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger * Unless required by applicable law or agreed to in writing, software 118872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger * distributed under the License is distributed on an "AS IS" BASIS, 128872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 138872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger * See the License for the specific language governing permissions and 148872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger * limitations under the License. 158872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger */ 168872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 178872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger#include "Canvas.h" 188872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 19849911a9c4315fc552faa38516c842b2541b1909John Reck#include <SkCanvas.h> 20849911a9c4315fc552faa38516c842b2541b1909John Reck#include <SkClipStack.h> 21849911a9c4315fc552faa38516c842b2541b1909John Reck#include <SkDevice.h> 22849911a9c4315fc552faa38516c842b2541b1909John Reck#include <SkDeque.h> 23849911a9c4315fc552faa38516c842b2541b1909John Reck#include <SkDrawFilter.h> 24849911a9c4315fc552faa38516c842b2541b1909John Reck#include <SkGraphics.h> 25849911a9c4315fc552faa38516c842b2541b1909John Reck#include <SkShader.h> 26849911a9c4315fc552faa38516c842b2541b1909John Reck#include <SkTArray.h> 27849911a9c4315fc552faa38516c842b2541b1909John Reck#include <SkTemplates.h> 288872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 2960126efd7d905ca24822765c6dafac17fef278abBen Wagner#include <memory> 3060126efd7d905ca24822765c6dafac17fef278abBen Wagner 318872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergernamespace android { 328872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 338872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// Holds an SkCanvas reference plus additional native data. 348872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergerclass SkiaCanvas : public Canvas { 358872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergerpublic: 36c1b33d665c8caf5760f68c45c6ca0baa649b832aJohn Reck explicit SkiaCanvas(const SkBitmap& bitmap); 378872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 3818981294a58c411a4a33ebb22caf9c75ba639691Leon Scroggins III /** 3918981294a58c411a4a33ebb22caf9c75ba639691Leon Scroggins III * Create a new SkiaCanvas. 4018981294a58c411a4a33ebb22caf9c75ba639691Leon Scroggins III * 4118981294a58c411a4a33ebb22caf9c75ba639691Leon Scroggins III * @param canvas SkCanvas to handle calls made to this SkiaCanvas. Must 4218981294a58c411a4a33ebb22caf9c75ba639691Leon Scroggins III * not be NULL. This constructor will ref() the SkCanvas, and unref() 4318981294a58c411a4a33ebb22caf9c75ba639691Leon Scroggins III * it in its destructor. 4418981294a58c411a4a33ebb22caf9c75ba639691Leon Scroggins III */ 4518981294a58c411a4a33ebb22caf9c75ba639691Leon Scroggins III explicit SkiaCanvas(SkCanvas* canvas) : mCanvas(canvas) { 468872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkASSERT(canvas); 4718981294a58c411a4a33ebb22caf9c75ba639691Leon Scroggins III canvas->ref(); 488872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 498872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 50b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual SkCanvas* asSkCanvas() override { 518872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger return mCanvas.get(); 528872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 538872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 54c1b33d665c8caf5760f68c45c6ca0baa649b832aJohn Reck virtual void setBitmap(const SkBitmap& bitmap) override; 558872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 56b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual bool isOpaque() override; 57b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual int width() override; 58b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual int height() override; 598872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 606578a989566e585eee053095dc80e2552e125db2Derek Sollenberger virtual void setHighContrastText(bool highContrastText) override { 616578a989566e585eee053095dc80e2552e125db2Derek Sollenberger mHighContrastText = highContrastText; 626578a989566e585eee053095dc80e2552e125db2Derek Sollenberger } 636578a989566e585eee053095dc80e2552e125db2Derek Sollenberger virtual bool isHighContrastText() override { return mHighContrastText; } 646578a989566e585eee053095dc80e2552e125db2Derek Sollenberger 65b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual int getSaveCount() const override; 66b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual int save(SkCanvas::SaveFlags flags) override; 67b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual void restore() override; 68b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual void restoreToCount(int saveCount) override; 698872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 708872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger virtual int saveLayer(float left, float top, float right, float bottom, 71b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger const SkPaint* paint, SkCanvas::SaveFlags flags) override; 728872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger virtual int saveLayerAlpha(float left, float top, float right, float bottom, 73b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger int alpha, SkCanvas::SaveFlags flags) override; 74b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger 75b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual void getMatrix(SkMatrix* outMatrix) const override; 76b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual void setMatrix(const SkMatrix& matrix) override; 77ac7b6d33d23cb0baaf61c723346198d41f012035Tom Hudson virtual void setLocalMatrix(const SkMatrix& matrix) override { this->setMatrix(matrix); } 78b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual void concat(const SkMatrix& matrix) override; 79b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual void rotate(float degrees) override; 80b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual void scale(float sx, float sy) override; 81b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual void skew(float sx, float sy) override; 82b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual void translate(float dx, float dy) override; 83b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger 84b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual bool getClipBounds(SkRect* outRect) const override; 85b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual bool quickRejectRect(float left, float top, float right, float bottom) const override; 86b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual bool quickRejectPath(const SkPath& path) const override; 87b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual bool clipRect(float left, float top, float right, float bottom, 88b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger SkRegion::Op op) override; 89b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual bool clipPath(const SkPath* path, SkRegion::Op op) override; 90b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual bool clipRegion(const SkRegion* region, SkRegion::Op op) override; 91b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger 92b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual SkDrawFilter* getDrawFilter() override; 93b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual void setDrawFilter(SkDrawFilter* drawFilter) override; 94b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger 95b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual void drawColor(int color, SkXfermode::Mode mode) override; 96b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual void drawPaint(const SkPaint& paint) override; 97b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger 98b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual void drawPoint(float x, float y, const SkPaint& paint) override; 99b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual void drawPoints(const float* points, int count, const SkPaint& paint) override; 1008872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger virtual void drawLine(float startX, float startY, float stopX, float stopY, 101b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger const SkPaint& paint) override; 102b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual void drawLines(const float* points, int count, const SkPaint& paint) override; 103b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual void drawRect(float left, float top, float right, float bottom, 104b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger const SkPaint& paint) override; 10594394b3fb048d5349a77b57950ab7f6b6e92ce34Derek Sollenberger virtual void drawRegion(const SkRegion& region, const SkPaint& paint) override; 1068872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger virtual void drawRoundRect(float left, float top, float right, float bottom, 107b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger float rx, float ry, const SkPaint& paint) override; 108b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual void drawCircle(float x, float y, float radius, const SkPaint& paint) override; 109b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual void drawOval(float left, float top, float right, float bottom, 110b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger const SkPaint& paint) override; 1118872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger virtual void drawArc(float left, float top, float right, float bottom, 112b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger float startAngle, float sweepAngle, bool useCenter, const SkPaint& paint) override; 113b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual void drawPath(const SkPath& path, const SkPaint& paint) override; 1148872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger virtual void drawVertices(SkCanvas::VertexMode vertexMode, int vertexCount, 1158872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger const float* verts, const float* tex, const int* colors, 116b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger const uint16_t* indices, int indexCount, const SkPaint& paint) override; 1178872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 118b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual void drawBitmap(const SkBitmap& bitmap, float left, float top, 119b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger const SkPaint* paint) override; 120b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual void drawBitmap(const SkBitmap& bitmap, const SkMatrix& matrix, 121b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger const SkPaint* paint) override; 1228872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger virtual void drawBitmap(const SkBitmap& bitmap, float srcLeft, float srcTop, 1238872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger float srcRight, float srcBottom, float dstLeft, float dstTop, 124b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger float dstRight, float dstBottom, const SkPaint* paint) override; 1258872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger virtual void drawBitmapMesh(const SkBitmap& bitmap, int meshWidth, int meshHeight, 126b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger const float* vertices, const int* colors, const SkPaint* paint) override; 127edca320a2b42011f98c308fdf25fc0494c6a5454Derek Sollenberger virtual void drawNinePatch(const SkBitmap& bitmap, const android::Res_png_9patch& chunk, 128edca320a2b42011f98c308fdf25fc0494c6a5454Derek Sollenberger float dstLeft, float dstTop, float dstRight, float dstBottom, 129edca320a2b42011f98c308fdf25fc0494c6a5454Derek Sollenberger const SkPaint* paint) override; 1308872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 131acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenberger virtual void drawText(const uint16_t* text, const float* positions, int count, 132acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenberger const SkPaint& paint, float x, float y, 1338dfaa4904205772cdceee63ef3989bcdedf1a914Tom Hudson float boundsLeft, float boundsTop, float boundsRight, float boundsBottom, 134b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger float totalAdvance) override; 1358872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger virtual void drawPosText(const uint16_t* text, const float* positions, int count, 136b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger int posCount, const SkPaint& paint) override; 1378872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger virtual void drawTextOnPath(const uint16_t* glyphs, int count, const SkPath& path, 138b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger float hOffset, float vOffset, const SkPaint& paint) override; 139acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenberger 140b3d50e007523d1ada0866d384c391c72ac1a3577Derek Sollenberger virtual bool drawTextAbsolutePos() const override { return true; } 1418872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 1428872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergerprivate: 1438872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger struct SaveRec { 1448872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger int saveCount; 1458872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkCanvas::SaveFlags saveFlags; 1468872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger }; 1478872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 1486578a989566e585eee053095dc80e2552e125db2Derek Sollenberger bool mHighContrastText = false; 1496578a989566e585eee053095dc80e2552e125db2Derek Sollenberger 1508872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger void recordPartialSave(SkCanvas::SaveFlags flags); 1518872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger void saveClipsForFrame(SkTArray<SkClipStack::Element>& clips, int frameSaveCount); 1528872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger void applyClips(const SkTArray<SkClipStack::Element>& clips); 1538872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 154acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenberger void drawPoints(const float* points, int count, const SkPaint& paint, 1558872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkCanvas::PointMode mode); 156acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenberger void drawTextDecorations(float x, float y, float length, const SkPaint& paint); 1578872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 1588872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkAutoTUnref<SkCanvas> mCanvas; 15960126efd7d905ca24822765c6dafac17fef278abBen Wagner std::unique_ptr<SkDeque> mSaveStack; // lazily allocated, tracks partial saves. 1608872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger}; 1618872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 162c1b33d665c8caf5760f68c45c6ca0baa649b832aJohn ReckCanvas* Canvas::create_canvas(const SkBitmap& bitmap) { 1638872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger return new SkiaCanvas(bitmap); 1648872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 1658872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 1668872b38ef403cc2c44aca07d392f5e9426fd7f54Derek SollenbergerCanvas* Canvas::create_canvas(SkCanvas* skiaCanvas) { 1678872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger return new SkiaCanvas(skiaCanvas); 1688872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 1698872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 170c1b33d665c8caf5760f68c45c6ca0baa649b832aJohn ReckSkiaCanvas::SkiaCanvas(const SkBitmap& bitmap) { 171c1b33d665c8caf5760f68c45c6ca0baa649b832aJohn Reck mCanvas.reset(new SkCanvas(bitmap)); 1728872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 1738872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 1748872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// ---------------------------------------------------------------------------- 1758872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// Canvas state operations: Replace Bitmap 1768872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// ---------------------------------------------------------------------------- 1778872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 1788872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergerclass ClipCopier : public SkCanvas::ClipVisitor { 1798872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergerpublic: 1808872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger ClipCopier(SkCanvas* dstCanvas) : m_dstCanvas(dstCanvas) {} 1818872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 1828872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger virtual void clipRect(const SkRect& rect, SkRegion::Op op, bool antialias) { 1838872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger m_dstCanvas->clipRect(rect, op, antialias); 1848872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 1858872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger virtual void clipRRect(const SkRRect& rrect, SkRegion::Op op, bool antialias) { 1868872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger m_dstCanvas->clipRRect(rrect, op, antialias); 1878872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 1888872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger virtual void clipPath(const SkPath& path, SkRegion::Op op, bool antialias) { 1898872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger m_dstCanvas->clipPath(path, op, antialias); 1908872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 1918872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 1928872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergerprivate: 1938872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkCanvas* m_dstCanvas; 1948872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger}; 1958872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 196c1b33d665c8caf5760f68c45c6ca0baa649b832aJohn Reckvoid SkiaCanvas::setBitmap(const SkBitmap& bitmap) { 197c1b33d665c8caf5760f68c45c6ca0baa649b832aJohn Reck SkCanvas* newCanvas = new SkCanvas(bitmap); 1988872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkASSERT(newCanvas); 1998872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 200c1b33d665c8caf5760f68c45c6ca0baa649b832aJohn Reck if (!bitmap.isNull()) { 2018872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger // Copy the canvas matrix & clip state. 2028872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger newCanvas->setMatrix(mCanvas->getTotalMatrix()); 2038872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger if (NULL != mCanvas->getDevice() && NULL != newCanvas->getDevice()) { 2048872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger ClipCopier copier(newCanvas); 2058872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->replayClips(&copier); 2068872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 2078872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 2088872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 2098872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger // unrefs the existing canvas 2108872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas.reset(newCanvas); 2118872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 2128872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger // clean up the old save stack 2138872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mSaveStack.reset(NULL); 2148872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 2158872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 2168872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// ---------------------------------------------------------------------------- 2178872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// Canvas state operations 2188872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// ---------------------------------------------------------------------------- 2198872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 2208872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergerbool SkiaCanvas::isOpaque() { 2218872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger return mCanvas->getDevice()->accessBitmap(false).isOpaque(); 2228872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 2238872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 2248872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergerint SkiaCanvas::width() { 2258872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger return mCanvas->getBaseLayerSize().width(); 2268872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 2278872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 2288872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergerint SkiaCanvas::height() { 2298872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger return mCanvas->getBaseLayerSize().height(); 2308872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 2318872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 2328872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// ---------------------------------------------------------------------------- 2338872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// Canvas state operations: Save (layer) 2348872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// ---------------------------------------------------------------------------- 2358872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 2368872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergerint SkiaCanvas::getSaveCount() const { 2378872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger return mCanvas->getSaveCount(); 2388872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 2398872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 2408872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergerint SkiaCanvas::save(SkCanvas::SaveFlags flags) { 2418872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger int count = mCanvas->save(); 2428872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger recordPartialSave(flags); 2438872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger return count; 2448872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 2458872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 2468872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergervoid SkiaCanvas::restore() { 2478872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger const SaveRec* rec = (NULL == mSaveStack.get()) 2488872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger ? NULL 2498872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger : static_cast<SaveRec*>(mSaveStack->back()); 2508872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger int currentSaveCount = mCanvas->getSaveCount() - 1; 2518872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkASSERT(NULL == rec || currentSaveCount >= rec->saveCount); 2528872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 2538872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger if (NULL == rec || rec->saveCount != currentSaveCount) { 2548872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger // Fast path - no record for this frame. 2558872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->restore(); 2568872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger return; 2578872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 2588872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 2598872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger bool preserveMatrix = !(rec->saveFlags & SkCanvas::kMatrix_SaveFlag); 2608872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger bool preserveClip = !(rec->saveFlags & SkCanvas::kClip_SaveFlag); 2618872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 2628872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkMatrix savedMatrix; 2638872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger if (preserveMatrix) { 2648872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger savedMatrix = mCanvas->getTotalMatrix(); 2658872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 2668872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 2678872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkTArray<SkClipStack::Element> savedClips; 2688872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger if (preserveClip) { 2698872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger saveClipsForFrame(savedClips, currentSaveCount); 2708872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 2718872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 2728872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->restore(); 2738872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 2748872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger if (preserveMatrix) { 2758872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->setMatrix(savedMatrix); 2768872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 2778872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 2788872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger if (preserveClip && !savedClips.empty()) { 2798872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger applyClips(savedClips); 2808872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 2818872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 2828872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mSaveStack->pop_back(); 2838872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 2848872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 2858872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergervoid SkiaCanvas::restoreToCount(int restoreCount) { 2868872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger while (mCanvas->getSaveCount() > restoreCount) { 2878872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger this->restore(); 2888872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 2898872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 2908872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 2918872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergerint SkiaCanvas::saveLayer(float left, float top, float right, float bottom, 292acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenberger const SkPaint* paint, SkCanvas::SaveFlags flags) { 2938872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkRect bounds = SkRect::MakeLTRB(left, top, right, bottom); 2948872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger int count = mCanvas->saveLayer(&bounds, paint, flags | SkCanvas::kMatrixClip_SaveFlag); 2958872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger recordPartialSave(flags); 2968872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger return count; 2978872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 2988872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 2998872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergerint SkiaCanvas::saveLayerAlpha(float left, float top, float right, float bottom, 3008872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger int alpha, SkCanvas::SaveFlags flags) { 3018872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkRect bounds = SkRect::MakeLTRB(left, top, right, bottom); 3028872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger int count = mCanvas->saveLayerAlpha(&bounds, alpha, flags | SkCanvas::kMatrixClip_SaveFlag); 3038872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger recordPartialSave(flags); 3048872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger return count; 3058872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 3068872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 3078872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// ---------------------------------------------------------------------------- 3088872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// functions to emulate legacy SaveFlags (i.e. independent matrix/clip flags) 3098872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// ---------------------------------------------------------------------------- 3108872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 3118872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergervoid SkiaCanvas::recordPartialSave(SkCanvas::SaveFlags flags) { 3128872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger // A partial save is a save operation which doesn't capture the full canvas state. 3138872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger // (either kMatrix_SaveFlags or kClip_SaveFlag is missing). 3148872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 3158872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger // Mask-out non canvas state bits. 3168872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger flags = static_cast<SkCanvas::SaveFlags>(flags & SkCanvas::kMatrixClip_SaveFlag); 3178872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 3188872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger if (SkCanvas::kMatrixClip_SaveFlag == flags) { 3198872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger // not a partial save. 3208872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger return; 3218872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 3228872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 3238872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger if (NULL == mSaveStack.get()) { 3248872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mSaveStack.reset(SkNEW_ARGS(SkDeque, (sizeof(struct SaveRec), 8))); 3258872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 3268872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 3278872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SaveRec* rec = static_cast<SaveRec*>(mSaveStack->push_back()); 3288872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger // Store the save counter in the SkClipStack domain. 3298872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger // (0-based, equal to the number of save ops on the stack). 3308872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger rec->saveCount = mCanvas->getSaveCount() - 1; 3318872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger rec->saveFlags = flags; 3328872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 3338872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 3348872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergervoid SkiaCanvas::saveClipsForFrame(SkTArray<SkClipStack::Element>& clips, int frameSaveCount) { 3358872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkClipStack::Iter clipIterator(*mCanvas->getClipStack(), 3368872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkClipStack::Iter::kTop_IterStart); 3378872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger while (const SkClipStack::Element* elem = clipIterator.next()) { 3388872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger if (elem->getSaveCount() < frameSaveCount) { 3398872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger // done with the current frame. 3408872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger break; 3418872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 3428872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkASSERT(elem->getSaveCount() == frameSaveCount); 3438872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger clips.push_back(*elem); 3448872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 3458872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 3468872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 3478872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergervoid SkiaCanvas::applyClips(const SkTArray<SkClipStack::Element>& clips) { 3488872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger ClipCopier clipCopier(mCanvas); 3498872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 3508872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger // The clip stack stores clips in device space. 3518872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkMatrix origMatrix = mCanvas->getTotalMatrix(); 3528872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->resetMatrix(); 3538872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 3548872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger // We pushed the clips in reverse order. 3558872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger for (int i = clips.count() - 1; i >= 0; --i) { 3568872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger clips[i].replay(&clipCopier); 3578872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 3588872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 3598872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->setMatrix(origMatrix); 3608872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 3618872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 3628872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// ---------------------------------------------------------------------------- 3638872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// Canvas state operations: Matrix 3648872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// ---------------------------------------------------------------------------- 3658872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 3668872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergervoid SkiaCanvas::getMatrix(SkMatrix* outMatrix) const { 3678872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger *outMatrix = mCanvas->getTotalMatrix(); 3688872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 3698872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 3708872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergervoid SkiaCanvas::setMatrix(const SkMatrix& matrix) { 3718872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->setMatrix(matrix); 3728872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 3738872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 3748872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergervoid SkiaCanvas::concat(const SkMatrix& matrix) { 3758872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->concat(matrix); 3768872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 3778872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 3788872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergervoid SkiaCanvas::rotate(float degrees) { 3798872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->rotate(degrees); 3808872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 3818872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 3828872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergervoid SkiaCanvas::scale(float sx, float sy) { 3838872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->scale(sx, sy); 3848872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 3858872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 3868872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergervoid SkiaCanvas::skew(float sx, float sy) { 3878872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->skew(sx, sy); 3888872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 3898872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 3908872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergervoid SkiaCanvas::translate(float dx, float dy) { 3918872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->translate(dx, dy); 3928872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 3938872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 3948872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// ---------------------------------------------------------------------------- 3958872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// Canvas state operations: Clips 3968872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// ---------------------------------------------------------------------------- 3978872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 3988872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// This function is a mirror of SkCanvas::getClipBounds except that it does 3998872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// not outset the edge of the clip to account for anti-aliasing. There is 4008872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// a skia bug to investigate pushing this logic into back into skia. 4018872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// (see https://code.google.com/p/skia/issues/detail?id=1303) 4028872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergerbool SkiaCanvas::getClipBounds(SkRect* outRect) const { 4038872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkIRect ibounds; 4048872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger if (!mCanvas->getClipDeviceBounds(&ibounds)) { 4058872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger return false; 4068872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 4078872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 4088872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkMatrix inverse; 4098872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger // if we can't invert the CTM, we can't return local clip bounds 4108872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger if (!mCanvas->getTotalMatrix().invert(&inverse)) { 4118872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger if (outRect) { 4128872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger outRect->setEmpty(); 4138872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 4148872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger return false; 4158872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 4168872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 4178872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger if (NULL != outRect) { 4188872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkRect r = SkRect::Make(ibounds); 4198872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger inverse.mapRect(outRect, r); 4208872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 4218872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger return true; 4228872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 4238872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 4248872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergerbool SkiaCanvas::quickRejectRect(float left, float top, float right, float bottom) const { 4258872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkRect bounds = SkRect::MakeLTRB(left, top, right, bottom); 4268872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger return mCanvas->quickReject(bounds); 4278872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 4288872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 4298872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergerbool SkiaCanvas::quickRejectPath(const SkPath& path) const { 4308872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger return mCanvas->quickReject(path); 4318872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 4328872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 4338872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergerbool SkiaCanvas::clipRect(float left, float top, float right, float bottom, SkRegion::Op op) { 4348872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkRect rect = SkRect::MakeLTRB(left, top, right, bottom); 4358872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->clipRect(rect, op); 4365ec6a2878b2ad933c5da6fe2341c854155acc24cChris Craik return !mCanvas->isClipEmpty(); 4378872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 4388872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 4398872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergerbool SkiaCanvas::clipPath(const SkPath* path, SkRegion::Op op) { 4408872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->clipPath(*path, op); 4415ec6a2878b2ad933c5da6fe2341c854155acc24cChris Craik return !mCanvas->isClipEmpty(); 4428872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 4438872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 4448872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergerbool SkiaCanvas::clipRegion(const SkRegion* region, SkRegion::Op op) { 4458872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkPath rgnPath; 4468872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger if (region->getBoundaryPath(&rgnPath)) { 4478872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger // The region is specified in device space. 4488872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkMatrix savedMatrix = mCanvas->getTotalMatrix(); 4498872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->resetMatrix(); 4508872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->clipPath(rgnPath, op); 4518872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->setMatrix(savedMatrix); 4528872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } else { 4538872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->clipRect(SkRect::MakeEmpty(), op); 4548872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 4555ec6a2878b2ad933c5da6fe2341c854155acc24cChris Craik return !mCanvas->isClipEmpty(); 4568872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 4578872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 4588872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// ---------------------------------------------------------------------------- 4598872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// Canvas state operations: Filters 4608872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// ---------------------------------------------------------------------------- 4618872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 462acb4099deff72c2c631f7110a405a3331d3e8b27Derek SollenbergerSkDrawFilter* SkiaCanvas::getDrawFilter() { 463acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenberger return mCanvas->getDrawFilter(); 464acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenberger} 465acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenberger 4668872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergervoid SkiaCanvas::setDrawFilter(SkDrawFilter* drawFilter) { 4678872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->setDrawFilter(drawFilter); 4688872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 4698872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 4708872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// ---------------------------------------------------------------------------- 4718872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// Canvas draw operations 4728872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// ---------------------------------------------------------------------------- 4738872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 4748872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergervoid SkiaCanvas::drawColor(int color, SkXfermode::Mode mode) { 4758872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->drawColor(color, mode); 4768872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 4778872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 478acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenbergervoid SkiaCanvas::drawPaint(const SkPaint& paint) { 4798872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->drawPaint(paint); 4808872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 4818872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 4828872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// ---------------------------------------------------------------------------- 4838872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// Canvas draw operations: Geometry 4848872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// ---------------------------------------------------------------------------- 4858872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 486acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenbergervoid SkiaCanvas::drawPoints(const float* points, int count, const SkPaint& paint, 4878872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkCanvas::PointMode mode) { 4888872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger // convert the floats into SkPoints 4898872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger count >>= 1; // now it is the number of points 4906bbf68d05a9deb335fc693b4a64651aea1b4e9e0Ben Wagner std::unique_ptr<SkPoint[]> pts(new SkPoint[count]); 4918872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger for (int i = 0; i < count; i++) { 4928872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger pts[i].set(points[0], points[1]); 4938872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger points += 2; 4948872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 4956bbf68d05a9deb335fc693b4a64651aea1b4e9e0Ben Wagner mCanvas->drawPoints(mode, count, pts.get(), paint); 4968872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 4978872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 4988872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 499acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenbergervoid SkiaCanvas::drawPoint(float x, float y, const SkPaint& paint) { 5008872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->drawPoint(x, y, paint); 5018872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 5028872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 503acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenbergervoid SkiaCanvas::drawPoints(const float* points, int count, const SkPaint& paint) { 5048872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger this->drawPoints(points, count, paint, SkCanvas::kPoints_PointMode); 5058872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 5068872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 5078872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergervoid SkiaCanvas::drawLine(float startX, float startY, float stopX, float stopY, 508acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenberger const SkPaint& paint) { 5098872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->drawLine(startX, startY, stopX, stopY, paint); 5108872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 5118872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 512acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenbergervoid SkiaCanvas::drawLines(const float* points, int count, const SkPaint& paint) { 5138872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger this->drawPoints(points, count, paint, SkCanvas::kLines_PointMode); 5148872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 5158872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 5168872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergervoid SkiaCanvas::drawRect(float left, float top, float right, float bottom, 517acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenberger const SkPaint& paint) { 5188872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->drawRectCoords(left, top, right, bottom, paint); 5198872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 5208872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 5218872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 52294394b3fb048d5349a77b57950ab7f6b6e92ce34Derek Sollenbergervoid SkiaCanvas::drawRegion(const SkRegion& region, const SkPaint& paint) { 52394394b3fb048d5349a77b57950ab7f6b6e92ce34Derek Sollenberger SkRegion::Iterator it(region); 52494394b3fb048d5349a77b57950ab7f6b6e92ce34Derek Sollenberger while (!it.done()) { 52594394b3fb048d5349a77b57950ab7f6b6e92ce34Derek Sollenberger mCanvas->drawRect(SkRect::Make(it.rect()), paint); 52694394b3fb048d5349a77b57950ab7f6b6e92ce34Derek Sollenberger it.next(); 52794394b3fb048d5349a77b57950ab7f6b6e92ce34Derek Sollenberger } 52894394b3fb048d5349a77b57950ab7f6b6e92ce34Derek Sollenberger} 52994394b3fb048d5349a77b57950ab7f6b6e92ce34Derek Sollenberger 5308872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergervoid SkiaCanvas::drawRoundRect(float left, float top, float right, float bottom, 531acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenberger float rx, float ry, const SkPaint& paint) { 5328872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkRect rect = SkRect::MakeLTRB(left, top, right, bottom); 5338872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->drawRoundRect(rect, rx, ry, paint); 5348872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 5358872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 536acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenbergervoid SkiaCanvas::drawCircle(float x, float y, float radius, const SkPaint& paint) { 5378872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->drawCircle(x, y, radius, paint); 5388872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 5398872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 540acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenbergervoid SkiaCanvas::drawOval(float left, float top, float right, float bottom, const SkPaint& paint) { 5418872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkRect oval = SkRect::MakeLTRB(left, top, right, bottom); 5428872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->drawOval(oval, paint); 5438872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 5448872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 5458872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergervoid SkiaCanvas::drawArc(float left, float top, float right, float bottom, 546acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenberger float startAngle, float sweepAngle, bool useCenter, const SkPaint& paint) { 5478872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkRect arc = SkRect::MakeLTRB(left, top, right, bottom); 5488872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->drawArc(arc, startAngle, sweepAngle, useCenter, paint); 5498872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 5508872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 551acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenbergervoid SkiaCanvas::drawPath(const SkPath& path, const SkPaint& paint) { 5528872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->drawPath(path, paint); 5538872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 5548872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 5558872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergervoid SkiaCanvas::drawVertices(SkCanvas::VertexMode vertexMode, int vertexCount, 5568872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger const float* verts, const float* texs, const int* colors, 557acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenberger const uint16_t* indices, int indexCount, const SkPaint& paint) { 5588872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger#ifndef SK_SCALAR_IS_FLOAT 5598872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkDEBUGFAIL("SkScalar must be a float for these conversions to be valid"); 5608872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger#endif 5618872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger const int ptCount = vertexCount >> 1; 5628872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->drawVertices(vertexMode, ptCount, (SkPoint*)verts, (SkPoint*)texs, 5638872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger (SkColor*)colors, NULL, indices, indexCount, paint); 5648872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 5658872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 5668872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// ---------------------------------------------------------------------------- 5678872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// Canvas draw operations: Bitmaps 5688872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// ---------------------------------------------------------------------------- 5698872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 570acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenbergervoid SkiaCanvas::drawBitmap(const SkBitmap& bitmap, float left, float top, const SkPaint* paint) { 5718872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->drawBitmap(bitmap, left, top, paint); 5728872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 5738872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 574acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenbergervoid SkiaCanvas::drawBitmap(const SkBitmap& bitmap, const SkMatrix& matrix, const SkPaint* paint) { 57570ffbf9e8288296ef7009c8297bcb6da6a7f73b2Mike Reed SkAutoCanvasRestore acr(mCanvas, true); 57670ffbf9e8288296ef7009c8297bcb6da6a7f73b2Mike Reed mCanvas->concat(matrix); 57770ffbf9e8288296ef7009c8297bcb6da6a7f73b2Mike Reed mCanvas->drawBitmap(bitmap, 0, 0, paint); 5788872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 5798872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 5808872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergervoid SkiaCanvas::drawBitmap(const SkBitmap& bitmap, float srcLeft, float srcTop, 5818872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger float srcRight, float srcBottom, float dstLeft, float dstTop, 582acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenberger float dstRight, float dstBottom, const SkPaint* paint) { 5838872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkRect srcRect = SkRect::MakeLTRB(srcLeft, srcTop, srcRight, srcBottom); 5848872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkRect dstRect = SkRect::MakeLTRB(dstLeft, dstTop, dstRight, dstBottom); 5858872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->drawBitmapRectToRect(bitmap, &srcRect, dstRect, paint); 5868872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 5878872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 5888872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergervoid SkiaCanvas::drawBitmapMesh(const SkBitmap& bitmap, int meshWidth, int meshHeight, 589acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenberger const float* vertices, const int* colors, const SkPaint* paint) { 5908872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 5918872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger const int ptCount = (meshWidth + 1) * (meshHeight + 1); 5928872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger const int indexCount = meshWidth * meshHeight * 6; 5938872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 5948872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger /* Our temp storage holds 2 or 3 arrays. 5958872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger texture points [ptCount * sizeof(SkPoint)] 5968872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger optionally vertex points [ptCount * sizeof(SkPoint)] if we need a 5978872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger copy to convert from float to fixed 5988872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger indices [ptCount * sizeof(uint16_t)] 5998872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger */ 6008872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger ssize_t storageSize = ptCount * sizeof(SkPoint); // texs[] 6018872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger storageSize += indexCount * sizeof(uint16_t); // indices[] 6028872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 6038872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 6048872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger#ifndef SK_SCALAR_IS_FLOAT 6058872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkDEBUGFAIL("SkScalar must be a float for these conversions to be valid"); 6068872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger#endif 6076bbf68d05a9deb335fc693b4a64651aea1b4e9e0Ben Wagner std::unique_ptr<char[]> storage(new char[storageSize]); 6088872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkPoint* texs = (SkPoint*)storage.get(); 6098872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger uint16_t* indices = (uint16_t*)(texs + ptCount); 6108872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 6118872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger // cons up texture coordinates and indices 6128872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger { 6138872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger const SkScalar w = SkIntToScalar(bitmap.width()); 6148872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger const SkScalar h = SkIntToScalar(bitmap.height()); 6158872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger const SkScalar dx = w / meshWidth; 6168872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger const SkScalar dy = h / meshHeight; 6178872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 6188872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkPoint* texsPtr = texs; 6198872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkScalar y = 0; 6208872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger for (int i = 0; i <= meshHeight; i++) { 6218872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger if (i == meshHeight) { 6228872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger y = h; // to ensure numerically we hit h exactly 6238872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 6248872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkScalar x = 0; 6258872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger for (int j = 0; j < meshWidth; j++) { 6268872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger texsPtr->set(x, y); 6278872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger texsPtr += 1; 6288872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger x += dx; 6298872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 6308872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger texsPtr->set(w, y); 6318872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger texsPtr += 1; 6328872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger y += dy; 6338872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 6348872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkASSERT(texsPtr - texs == ptCount); 6358872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 6368872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 6378872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger // cons up indices 6388872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger { 6398872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger uint16_t* indexPtr = indices; 6408872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger int index = 0; 6418872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger for (int i = 0; i < meshHeight; i++) { 6428872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger for (int j = 0; j < meshWidth; j++) { 6438872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger // lower-left triangle 6448872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger *indexPtr++ = index; 6458872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger *indexPtr++ = index + meshWidth + 1; 6468872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger *indexPtr++ = index + meshWidth + 2; 6478872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger // upper-right triangle 6488872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger *indexPtr++ = index; 6498872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger *indexPtr++ = index + meshWidth + 2; 6508872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger *indexPtr++ = index + 1; 6518872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger // bump to the next cell 6528872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger index += 1; 6538872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 6548872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger // bump to the next row 6558872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger index += 1; 6568872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 6578872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkASSERT(indexPtr - indices == indexCount); 6588872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkASSERT((char*)indexPtr - (char*)storage.get() == storageSize); 6598872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 6608872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 6618872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger // double-check that we have legal indices 6628872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger#ifdef SK_DEBUG 6638872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger { 6648872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger for (int i = 0; i < indexCount; i++) { 6658872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkASSERT((unsigned)indices[i] < (unsigned)ptCount); 6668872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 6678872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 6688872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger#endif 6698872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 6708872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger // cons-up a shader for the bitmap 671acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenberger SkPaint tmpPaint; 6728872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger if (paint) { 6738872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger tmpPaint = *paint; 6748872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 6758872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkShader* shader = SkShader::CreateBitmapShader(bitmap, 6768872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkShader::kClamp_TileMode, 6778872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkShader::kClamp_TileMode); 6788872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkSafeUnref(tmpPaint.setShader(shader)); 6798872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 6808872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->drawVertices(SkCanvas::kTriangles_VertexMode, ptCount, (SkPoint*)vertices, 6818872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger texs, (const SkColor*)colors, NULL, indices, 6828872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger indexCount, tmpPaint); 6838872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 6848872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 685edca320a2b42011f98c308fdf25fc0494c6a5454Derek Sollenbergervoid SkiaCanvas::drawNinePatch(const SkBitmap& bitmap, const Res_png_9patch& chunk, 686edca320a2b42011f98c308fdf25fc0494c6a5454Derek Sollenberger float dstLeft, float dstTop, float dstRight, float dstBottom, const SkPaint* paint) { 687edca320a2b42011f98c308fdf25fc0494c6a5454Derek Sollenberger SkRect bounds = SkRect::MakeLTRB(dstLeft, dstTop, dstRight, dstBottom); 688edca320a2b42011f98c308fdf25fc0494c6a5454Derek Sollenberger NinePatch::Draw(mCanvas, bounds, bitmap, chunk, paint, nullptr); 689edca320a2b42011f98c308fdf25fc0494c6a5454Derek Sollenberger} 690edca320a2b42011f98c308fdf25fc0494c6a5454Derek Sollenberger 6918872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// ---------------------------------------------------------------------------- 6928872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// Canvas draw operations: Text 6938872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger// ---------------------------------------------------------------------------- 6948872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 695acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenbergervoid SkiaCanvas::drawText(const uint16_t* text, const float* positions, int count, 696acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenberger const SkPaint& paint, float x, float y, 6978dfaa4904205772cdceee63ef3989bcdedf1a914Tom Hudson float boundsLeft, float boundsTop, float boundsRight, float boundsBottom, 6988dfaa4904205772cdceee63ef3989bcdedf1a914Tom Hudson float totalAdvance) { 699acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenberger // Set align to left for drawing, as we don't want individual 700acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenberger // glyphs centered or right-aligned; the offset above takes 701acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenberger // care of all alignment. 702acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenberger SkPaint paintCopy(paint); 703acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenberger paintCopy.setTextAlign(SkPaint::kLeft_Align); 7048872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 705acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenberger SK_COMPILE_ASSERT(sizeof(SkPoint) == sizeof(float)*2, SkPoint_is_no_longer_2_floats); 706acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenberger mCanvas->drawPosText(text, count << 1, reinterpret_cast<const SkPoint*>(positions), paintCopy); 7078872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 7088872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 7098872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergervoid SkiaCanvas::drawPosText(const uint16_t* text, const float* positions, int count, int posCount, 710acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenberger const SkPaint& paint) { 7118872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger SkPoint* posPtr = posCount > 0 ? new SkPoint[posCount] : NULL; 7128872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger int indx; 7138872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger for (indx = 0; indx < posCount; indx++) { 7148872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger posPtr[indx].fX = positions[indx << 1]; 7158872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger posPtr[indx].fY = positions[(indx << 1) + 1]; 7168872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger } 7178872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 718acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenberger SkPaint paintCopy(paint); 719acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenberger paintCopy.setTextEncoding(SkPaint::kUTF16_TextEncoding); 7208872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger mCanvas->drawPosText(text, count, posPtr, paintCopy); 7218872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 7228872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger delete[] posPtr; 7238872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 7248872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 7258872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenbergervoid SkiaCanvas::drawTextOnPath(const uint16_t* glyphs, int count, const SkPath& path, 726acb4099deff72c2c631f7110a405a3331d3e8b27Derek Sollenberger float hOffset, float vOffset, const SkPaint& paint) { 72734e79c1e570673148e3e0bbd91df3180a00eeff1Tom Hudson mCanvas->drawTextOnPathHV(glyphs, count << 1, path, hOffset, vOffset, paint); 7288872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} 7298872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger 7308872b38ef403cc2c44aca07d392f5e9426fd7f54Derek Sollenberger} // namespace android 731