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 #ifdef __ANDROID__ // Layoutlib does not support hardware acceleration 20 #include "DeferredLayerUpdater.h" 21 #endif 22 #include "RenderNode.h" 23 #include "VectorDrawable.h" 24 #include "hwui/Canvas.h" 25 #include "hwui/Paint.h" 26 27 #include <SkCanvas.h> 28 #include "pipeline/skia/AnimatedDrawables.h" 29 #include "src/core/SkArenaAlloc.h" 30 31 #include <cassert> 32 #include <optional> 33 34 namespace android { 35 36 // Holds an SkCanvas reference plus additional native data. 37 class SkiaCanvas : public Canvas { 38 public: 39 explicit SkiaCanvas(const SkBitmap& bitmap); 40 41 /** 42 * Create a new SkiaCanvas. 43 * 44 * @param canvas SkCanvas to handle calls made to this SkiaCanvas. Must 45 * not be NULL. This constructor does not take ownership, so the caller 46 * must guarantee that it remains valid while the SkiaCanvas is valid. 47 */ 48 explicit SkiaCanvas(SkCanvas* canvas); 49 50 virtual ~SkiaCanvas(); 51 resetRecording(int width,int height,uirenderer::RenderNode * renderNode)52 virtual void resetRecording(int width, int height, 53 uirenderer::RenderNode* renderNode) override { 54 LOG_ALWAYS_FATAL("SkiaCanvas cannot be reset as a recording canvas"); 55 } 56 finishRecording(uirenderer::RenderNode *)57 virtual void finishRecording(uirenderer::RenderNode*) override { 58 LOG_ALWAYS_FATAL("SkiaCanvas does not produce a DisplayList"); 59 } enableZ(bool enableZ)60 virtual void enableZ(bool enableZ) override { 61 LOG_ALWAYS_FATAL("SkiaCanvas does not support enableZ"); 62 } 63 64 virtual void punchHole(const SkRRect& rect) override; 65 66 virtual void setBitmap(const SkBitmap& bitmap) override; 67 68 virtual bool isOpaque() override; 69 virtual int width() override; 70 virtual int height() override; 71 72 virtual int getSaveCount() const override; 73 virtual int save(SaveFlags::Flags flags) override; 74 virtual void restore() override; 75 virtual void restoreToCount(int saveCount) override; 76 virtual void restoreUnclippedLayer(int saveCount, const SkPaint& paint) override; 77 78 virtual int saveLayer(float left, float top, float right, float bottom, const SkPaint* paint) override; 79 virtual int saveLayerAlpha(float left, float top, float right, float bottom, int alpha) override; 80 virtual int saveUnclippedLayer(int left, int top, int right, int bottom) override; 81 82 virtual void getMatrix(SkMatrix* outMatrix) const override; 83 virtual void setMatrix(const SkMatrix& matrix) override; 84 virtual void concat(const SkMatrix& matrix) override; 85 virtual void rotate(float degrees) override; 86 virtual void scale(float sx, float sy) override; 87 virtual void skew(float sx, float sy) override; 88 virtual void translate(float dx, float dy) override; 89 90 virtual bool getClipBounds(SkRect* outRect) const override; 91 virtual bool quickRejectRect(float left, float top, float right, float bottom) const override; 92 virtual bool quickRejectPath(const SkPath& path) const override; 93 virtual bool clipRect(float left, float top, float right, float bottom, SkClipOp op) override; 94 virtual bool clipPath(const SkPath* path, SkClipOp op) override; 95 96 virtual PaintFilter* getPaintFilter() override; 97 virtual void setPaintFilter(sk_sp<PaintFilter> paintFilter) override; 98 99 virtual SkCanvasState* captureCanvasState() const override; 100 101 virtual void drawColor(int color, SkBlendMode mode) override; 102 virtual void drawPaint(const SkPaint& paint) override; 103 104 virtual void drawPoint(float x, float y, const Paint& paint) override; 105 virtual void drawPoints(const float* points, int count, const Paint& paint) override; 106 virtual void drawLine(float startX, float startY, float stopX, float stopY, 107 const Paint& paint) override; 108 virtual void drawLines(const float* points, int count, const Paint& paint) override; 109 virtual void drawRect(float left, float top, float right, float bottom, 110 const Paint& paint) override; 111 virtual void drawRegion(const SkRegion& region, const Paint& paint) override; 112 virtual void drawRoundRect(float left, float top, float right, float bottom, float rx, float ry, 113 const Paint& paint) override; 114 115 virtual void drawDoubleRoundRect(const SkRRect& outer, const SkRRect& inner, 116 const Paint& paint) override; 117 118 virtual void drawCircle(float x, float y, float radius, const Paint& paint) override; 119 virtual void drawOval(float left, float top, float right, float bottom, 120 const Paint& paint) override; 121 virtual void drawArc(float left, float top, float right, float bottom, float startAngle, 122 float sweepAngle, bool useCenter, const Paint& paint) override; 123 virtual void drawPath(const SkPath& path, const Paint& paint) override; 124 virtual void drawVertices(const SkVertices*, SkBlendMode, const Paint& paint) override; 125 126 virtual void drawBitmap(Bitmap& bitmap, float left, float top, const Paint* paint) override; 127 virtual void drawBitmap(Bitmap& bitmap, const SkMatrix& matrix, const Paint* paint) override; 128 virtual void drawBitmap(Bitmap& bitmap, float srcLeft, float srcTop, float srcRight, 129 float srcBottom, float dstLeft, float dstTop, float dstRight, 130 float dstBottom, const Paint* paint) override; 131 virtual void drawBitmapMesh(Bitmap& bitmap, int meshWidth, int meshHeight, 132 const float* vertices, const int* colors, 133 const Paint* paint) override; 134 virtual void drawNinePatch(Bitmap& bitmap, const android::Res_png_9patch& chunk, float dstLeft, 135 float dstTop, float dstRight, float dstBottom, 136 const Paint* paint) override; 137 virtual double drawAnimatedImage(AnimatedImageDrawable* imgDrawable) override; 138 139 virtual void drawVectorDrawable(VectorDrawableRoot* vectorDrawable) override; 140 141 virtual void drawRoundRect(uirenderer::CanvasPropertyPrimitive* left, 142 uirenderer::CanvasPropertyPrimitive* top, 143 uirenderer::CanvasPropertyPrimitive* right, 144 uirenderer::CanvasPropertyPrimitive* bottom, 145 uirenderer::CanvasPropertyPrimitive* rx, 146 uirenderer::CanvasPropertyPrimitive* ry, 147 uirenderer::CanvasPropertyPaint* paint) override; 148 virtual void drawCircle(uirenderer::CanvasPropertyPrimitive* x, 149 uirenderer::CanvasPropertyPrimitive* y, 150 uirenderer::CanvasPropertyPrimitive* radius, 151 uirenderer::CanvasPropertyPaint* paint) override; 152 virtual void drawRipple(const uirenderer::skiapipeline::RippleDrawableParams& params) override; 153 154 virtual void drawLayer(uirenderer::DeferredLayerUpdater* layerHandle) override; 155 virtual void drawRenderNode(uirenderer::RenderNode* renderNode) override; 156 virtual void drawPicture(const SkPicture& picture) override; 157 158 protected: 159 SkiaCanvas(); asSkCanvas()160 SkCanvas* asSkCanvas() { return mCanvas; } 161 void reset(SkCanvas* skiaCanvas); drawDrawable(SkDrawable * drawable)162 void drawDrawable(SkDrawable* drawable) { mCanvas->drawDrawable(drawable); } 163 164 virtual void drawGlyphs(ReadGlyphFunc glyphFunc, int count, const Paint& paint, float x, 165 float y, float totalAdvance) override; 166 virtual void drawLayoutOnPath(const minikin::Layout& layout, float hOffset, float vOffset, 167 const Paint& paint, const SkPath& path, size_t start, 168 size_t end) override; 169 170 void onFilterPaint(SkPaint& paint); 171 filterPaint(const SkPaint & src)172 SkPaint filterPaint(const SkPaint& src) { 173 SkPaint dst(src); 174 this->onFilterPaint(dst); 175 return dst; 176 } 177 178 // proc(const SkPaint& modifiedPaint) 179 template <typename Proc> 180 void applyLooper(const Paint* paint, Proc proc, void (*preFilter)(SkPaint&) = nullptr) { 181 BlurDrawLooper* looper = paint ? paint->getLooper() : nullptr; 182 const SkPaint* skpPtr = paint; 183 SkPaint skp = skpPtr ? *skpPtr : SkPaint(); 184 if (preFilter) { 185 preFilter(skp); 186 } 187 this->onFilterPaint(skp); 188 if (looper) { 189 looper->apply(skp, [&](SkPoint offset, const SkPaint& modifiedPaint) { 190 mCanvas->save(); 191 mCanvas->translate(offset.fX, offset.fY); 192 proc(modifiedPaint); 193 mCanvas->restore(); 194 }); 195 } else { 196 proc(skp); 197 } 198 } 199 200 private: 201 struct SaveRec { 202 int saveCount; 203 SaveFlags::Flags saveFlags; 204 size_t clipIndex; 205 }; 206 207 const SaveRec* currentSaveRec() const; 208 void recordPartialSave(SaveFlags::Flags flags); 209 210 template <typename T> 211 void recordClip(const T&, SkClipOp); 212 void applyPersistentClips(size_t clipStartIndex); 213 214 void drawPoints(const float* points, int count, const Paint& paint, SkCanvas::PointMode mode); 215 216 class Clip; 217 218 std::unique_ptr<SkCanvas> mCanvasOwned; // might own a canvas we allocated 219 SkCanvas* mCanvas; // we do NOT own this canvas, it must survive us 220 // unless it is the same as mCanvasOwned.get() 221 std::unique_ptr<SkDeque> mSaveStack; // lazily allocated, tracks partial saves. 222 std::vector<Clip> mClipStack; // tracks persistent clips. 223 sk_sp<PaintFilter> mPaintFilter; 224 }; 225 226 } // namespace android 227