1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 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 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 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. 15 */ 16 #pragma once 17 18 #include "CanvasProperty.h" 19 #include "DeferredLayerUpdater.h" 20 #include "RenderNode.h" 21 #include "VectorDrawable.h" 22 #include "hwui/Canvas.h" 23 24 #include <SkCanvas.h> 25 #include <SkTLazy.h> 26 27 namespace android { 28 29 // Holds an SkCanvas reference plus additional native data. 30 class SkiaCanvas : public Canvas { 31 public: 32 explicit SkiaCanvas(const SkBitmap& bitmap); 33 34 /** 35 * Create a new SkiaCanvas. 36 * 37 * @param canvas SkCanvas to handle calls made to this SkiaCanvas. Must 38 * not be NULL. This constructor does not take ownership, so the caller 39 * must guarantee that it remains valid while the SkiaCanvas is valid. 40 */ 41 explicit SkiaCanvas(SkCanvas* canvas); 42 43 virtual ~SkiaCanvas(); 44 asSkCanvas()45 virtual SkCanvas* asSkCanvas() override { return mCanvas; } 46 resetRecording(int width,int height,uirenderer::RenderNode * renderNode)47 virtual void resetRecording(int width, int height, 48 uirenderer::RenderNode* renderNode) override { 49 LOG_ALWAYS_FATAL("SkiaCanvas cannot be reset as a recording canvas"); 50 } 51 finishRecording()52 virtual uirenderer::DisplayList* finishRecording() override { 53 LOG_ALWAYS_FATAL("SkiaCanvas does not produce a DisplayList"); 54 return nullptr; 55 } insertReorderBarrier(bool enableReorder)56 virtual void insertReorderBarrier(bool enableReorder) override { 57 LOG_ALWAYS_FATAL("SkiaCanvas does not support reordering barriers"); 58 } 59 60 virtual void setBitmap(const SkBitmap& bitmap) override; 61 62 virtual bool isOpaque() override; 63 virtual int width() override; 64 virtual int height() override; 65 66 virtual int getSaveCount() const override; 67 virtual int save(SaveFlags::Flags flags) override; 68 virtual void restore() override; 69 virtual void restoreToCount(int saveCount) override; 70 71 virtual int saveLayer(float left, float top, float right, float bottom, const SkPaint* paint, 72 SaveFlags::Flags flags) override; 73 virtual int saveLayerAlpha(float left, float top, float right, float bottom, int alpha, 74 SaveFlags::Flags flags) override; 75 76 virtual void getMatrix(SkMatrix* outMatrix) const override; 77 virtual void setMatrix(const SkMatrix& matrix) override; 78 virtual void concat(const SkMatrix& matrix) override; 79 virtual void rotate(float degrees) override; 80 virtual void scale(float sx, float sy) override; 81 virtual void skew(float sx, float sy) override; 82 virtual void translate(float dx, float dy) override; 83 84 virtual bool getClipBounds(SkRect* outRect) const override; 85 virtual bool quickRejectRect(float left, float top, float right, float bottom) const override; 86 virtual bool quickRejectPath(const SkPath& path) const override; 87 virtual bool clipRect(float left, float top, float right, float bottom, SkClipOp op) override; 88 virtual bool clipPath(const SkPath* path, SkClipOp op) override; 89 90 virtual SkDrawFilter* getDrawFilter() override; 91 virtual void setDrawFilter(SkDrawFilter* drawFilter) override; 92 93 virtual SkCanvasState* captureCanvasState() const override; 94 95 virtual void drawColor(int color, SkBlendMode mode) override; 96 virtual void drawPaint(const SkPaint& paint) override; 97 98 virtual void drawPoint(float x, float y, const SkPaint& paint) override; 99 virtual void drawPoints(const float* points, int count, const SkPaint& paint) override; 100 virtual void drawLine(float startX, float startY, float stopX, float stopY, 101 const SkPaint& paint) override; 102 virtual void drawLines(const float* points, int count, const SkPaint& paint) override; 103 virtual void drawRect(float left, float top, float right, float bottom, 104 const SkPaint& paint) override; 105 virtual void drawRegion(const SkRegion& region, const SkPaint& paint) override; 106 virtual void drawRoundRect(float left, float top, float right, float bottom, float rx, float ry, 107 const SkPaint& paint) override; 108 virtual void drawCircle(float x, float y, float radius, const SkPaint& paint) override; 109 virtual void drawOval(float left, float top, float right, float bottom, 110 const SkPaint& paint) override; 111 virtual void drawArc(float left, float top, float right, float bottom, float startAngle, 112 float sweepAngle, bool useCenter, const SkPaint& paint) override; 113 virtual void drawPath(const SkPath& path, const SkPaint& paint) override; 114 virtual void drawVertices(const SkVertices*, SkBlendMode, const SkPaint& paint) override; 115 116 virtual void drawBitmap(Bitmap& bitmap, float left, float top, const SkPaint* paint) override; 117 virtual void drawBitmap(Bitmap& bitmap, const SkMatrix& matrix, const SkPaint* paint) override; 118 virtual void drawBitmap(Bitmap& bitmap, float srcLeft, float srcTop, float srcRight, 119 float srcBottom, float dstLeft, float dstTop, float dstRight, 120 float dstBottom, const SkPaint* paint) override; 121 virtual void drawBitmapMesh(Bitmap& bitmap, int meshWidth, int meshHeight, 122 const float* vertices, const int* colors, 123 const SkPaint* paint) override; 124 virtual void drawNinePatch(Bitmap& bitmap, const android::Res_png_9patch& chunk, float dstLeft, 125 float dstTop, float dstRight, float dstBottom, 126 const SkPaint* paint) override; 127 virtual double drawAnimatedImage(AnimatedImageDrawable* imgDrawable) override; 128 drawTextAbsolutePos()129 virtual bool drawTextAbsolutePos() const override { return true; } 130 virtual void drawVectorDrawable(VectorDrawableRoot* vectorDrawable) override; 131 132 virtual void drawRoundRect(uirenderer::CanvasPropertyPrimitive* left, 133 uirenderer::CanvasPropertyPrimitive* top, 134 uirenderer::CanvasPropertyPrimitive* right, 135 uirenderer::CanvasPropertyPrimitive* bottom, 136 uirenderer::CanvasPropertyPrimitive* rx, 137 uirenderer::CanvasPropertyPrimitive* ry, 138 uirenderer::CanvasPropertyPaint* paint) override; 139 virtual void drawCircle(uirenderer::CanvasPropertyPrimitive* x, 140 uirenderer::CanvasPropertyPrimitive* y, 141 uirenderer::CanvasPropertyPrimitive* radius, 142 uirenderer::CanvasPropertyPaint* paint) override; 143 144 virtual void drawLayer(uirenderer::DeferredLayerUpdater* layerHandle) override; 145 virtual void drawRenderNode(uirenderer::RenderNode* renderNode) override; 146 virtual void callDrawGLFunction(Functor* functor, 147 uirenderer::GlFunctorLifecycleListener* listener) override; 148 149 protected: 150 SkiaCanvas(); 151 void reset(SkCanvas* skiaCanvas); drawDrawable(SkDrawable * drawable)152 void drawDrawable(SkDrawable* drawable) { mCanvas->drawDrawable(drawable); } 153 154 virtual void drawGlyphs(ReadGlyphFunc glyphFunc, int count, const SkPaint& paint, float x, 155 float y, float boundsLeft, float boundsTop, float boundsRight, 156 float boundsBottom, float totalAdvance) override; 157 virtual void drawLayoutOnPath(const minikin::Layout& layout, float hOffset, float vOffset, 158 const SkPaint& paint, const SkPath& path, size_t start, 159 size_t end) override; 160 161 private: 162 struct SaveRec { 163 int saveCount; 164 SaveFlags::Flags saveFlags; 165 size_t clipIndex; 166 }; 167 168 const SaveRec* currentSaveRec() const; 169 void recordPartialSave(SaveFlags::Flags flags); 170 171 template <typename T> 172 void recordClip(const T&, SkClipOp); 173 void applyPersistentClips(size_t clipStartIndex); 174 175 void drawPoints(const float* points, int count, const SkPaint& paint, SkCanvas::PointMode mode); 176 177 const SkPaint* addFilter(const SkPaint* origPaint, SkPaint* tmpPaint, 178 sk_sp<SkColorFilter> colorSpaceFilter); 179 180 class Clip; 181 182 std::unique_ptr<SkCanvas> mCanvasWrapper; // might own a wrapper on the canvas 183 std::unique_ptr<SkCanvas> mCanvasOwned; // might own a canvas we allocated 184 SkCanvas* mCanvas; // we do NOT own this canvas, it must survive us 185 // unless it is the same as mCanvasOwned.get() 186 std::unique_ptr<SkDeque> mSaveStack; // lazily allocated, tracks partial saves. 187 std::vector<Clip> mClipStack; // tracks persistent clips. 188 }; 189 190 } // namespace android 191