1 /* 2 * Copyright (C) 2015 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 17 #ifndef ANDROID_HWUI_RECORDING_CANVAS_H 18 #define ANDROID_HWUI_RECORDING_CANVAS_H 19 20 #include "CanvasState.h" 21 #include "DisplayList.h" 22 #include "ResourceCache.h" 23 #include "SkiaCanvasProxy.h" 24 #include "Snapshot.h" 25 #include "hwui/Bitmap.h" 26 #include "hwui/Canvas.h" 27 #include "utils/LinearAllocator.h" 28 #include "utils/Macros.h" 29 30 #include <SkDrawFilter.h> 31 #include <SkPaint.h> 32 #include <SkTLazy.h> 33 34 #include <vector> 35 36 namespace android { 37 namespace uirenderer { 38 39 struct ClipBase; 40 class DeferredLayerUpdater; 41 struct RecordedOp; 42 43 class ANDROID_API RecordingCanvas: public Canvas, public CanvasStateClient { 44 enum class DeferredBarrierType { 45 None, 46 InOrder, 47 OutOfOrder, 48 }; 49 public: 50 RecordingCanvas(size_t width, size_t height); 51 virtual ~RecordingCanvas(); 52 53 virtual void resetRecording(int width, int height, RenderNode* node = nullptr) override; 54 virtual WARN_UNUSED_RESULT DisplayList* finishRecording() override; 55 // ---------------------------------------------------------------------------- 56 // MISC HWUI OPERATIONS - TODO: CATEGORIZE 57 // ---------------------------------------------------------------------------- 58 virtual void insertReorderBarrier(bool enableReorder) override; 59 60 virtual void drawLayer(DeferredLayerUpdater* layerHandle) override; 61 virtual void drawRenderNode(RenderNode* renderNode) override; 62 virtual void callDrawGLFunction(Functor* functor, 63 GlFunctorLifecycleListener* listener) override; 64 65 // ---------------------------------------------------------------------------- 66 // CanvasStateClient interface 67 // ---------------------------------------------------------------------------- 68 virtual void onViewportInitialized() override; 69 virtual void onSnapshotRestored(const Snapshot& removed, const Snapshot& restored) override; getTargetFbo()70 virtual GLuint getTargetFbo() const override { return -1; } 71 72 // ---------------------------------------------------------------------------- 73 // HWUI Canvas draw operations 74 // ---------------------------------------------------------------------------- 75 76 virtual void drawRoundRect(CanvasPropertyPrimitive* left, CanvasPropertyPrimitive* top, 77 CanvasPropertyPrimitive* right, CanvasPropertyPrimitive* bottom, 78 CanvasPropertyPrimitive* rx, CanvasPropertyPrimitive* ry, 79 CanvasPropertyPaint* paint) override; 80 virtual void drawCircle(CanvasPropertyPrimitive* x, CanvasPropertyPrimitive* y, 81 CanvasPropertyPrimitive* radius, CanvasPropertyPaint* paint) override; 82 83 // ---------------------------------------------------------------------------- 84 // android/graphics/Canvas interface 85 // ---------------------------------------------------------------------------- 86 virtual SkCanvas* asSkCanvas() override; 87 setBitmap(const SkBitmap & bitmap)88 virtual void setBitmap(const SkBitmap& bitmap) override { 89 LOG_ALWAYS_FATAL("RecordingCanvas is not backed by a bitmap."); 90 } 91 isOpaque()92 virtual bool isOpaque() override { return false; } width()93 virtual int width() override { return mState.getWidth(); } height()94 virtual int height() override { return mState.getHeight(); } 95 setHighContrastText(bool highContrastText)96 virtual void setHighContrastText(bool highContrastText) override { 97 mHighContrastText = highContrastText; 98 } isHighContrastText()99 virtual bool isHighContrastText() override { return mHighContrastText; } 100 101 // ---------------------------------------------------------------------------- 102 // android/graphics/Canvas state operations 103 // ---------------------------------------------------------------------------- 104 // Save (layer) getSaveCount()105 virtual int getSaveCount() const override { return mState.getSaveCount(); } 106 virtual int save(SaveFlags::Flags flags) override; 107 virtual void restore() override; 108 virtual void restoreToCount(int saveCount) override; 109 110 virtual int saveLayer(float left, float top, float right, float bottom, const SkPaint* paint, 111 SaveFlags::Flags flags) override; saveLayerAlpha(float left,float top,float right,float bottom,int alpha,SaveFlags::Flags flags)112 virtual int saveLayerAlpha(float left, float top, float right, float bottom, 113 int alpha, SaveFlags::Flags flags) override { 114 SkPaint paint; 115 paint.setAlpha(alpha); 116 return saveLayer(left, top, right, bottom, &paint, flags); 117 } 118 119 // Matrix getMatrix(SkMatrix * outMatrix)120 virtual void getMatrix(SkMatrix* outMatrix) const override { mState.getMatrix(outMatrix); } setMatrix(const SkMatrix & matrix)121 virtual void setMatrix(const SkMatrix& matrix) override { mState.setMatrix(matrix); } 122 concat(const SkMatrix & matrix)123 virtual void concat(const SkMatrix& matrix) override { mState.concatMatrix(matrix); } 124 virtual void rotate(float degrees) override; 125 virtual void scale(float sx, float sy) override; 126 virtual void skew(float sx, float sy) override; 127 virtual void translate(float dx, float dy) override; 128 129 // Clip 130 virtual bool getClipBounds(SkRect* outRect) const override; 131 virtual bool quickRejectRect(float left, float top, float right, float bottom) const override; 132 virtual bool quickRejectPath(const SkPath& path) const override; 133 134 virtual bool clipRect(float left, float top, float right, float bottom, 135 SkClipOp op) override; 136 virtual bool clipPath(const SkPath* path, SkClipOp op) override; 137 138 // Misc getDrawFilter()139 virtual SkDrawFilter* getDrawFilter() override { return mDrawFilter.get(); } setDrawFilter(SkDrawFilter * filter)140 virtual void setDrawFilter(SkDrawFilter* filter) override { 141 mDrawFilter.reset(SkSafeRef(filter)); 142 } 143 144 // ---------------------------------------------------------------------------- 145 // android/graphics/Canvas draw operations 146 // ---------------------------------------------------------------------------- 147 virtual void drawColor(int color, SkBlendMode mode) override; 148 virtual void drawPaint(const SkPaint& paint) override; 149 150 // Geometry drawPoint(float x,float y,const SkPaint & paint)151 virtual void drawPoint(float x, float y, const SkPaint& paint) override { 152 float points[2] = { x, y }; 153 drawPoints(points, 2, paint); 154 } 155 virtual void drawPoints(const float* points, int floatCount, const SkPaint& paint) override; drawLine(float startX,float startY,float stopX,float stopY,const SkPaint & paint)156 virtual void drawLine(float startX, float startY, float stopX, float stopY, 157 const SkPaint& paint) override { 158 float points[4] = { startX, startY, stopX, stopY }; 159 drawLines(points, 4, paint); 160 } 161 virtual void drawLines(const float* points, int floatCount, const SkPaint& paint) override; 162 virtual void drawRect(float left, float top, float right, float bottom, const SkPaint& paint) override; 163 virtual void drawRegion(const SkRegion& region, const SkPaint& paint) override; 164 virtual void drawRoundRect(float left, float top, float right, float bottom, 165 float rx, float ry, const SkPaint& paint) override; 166 virtual void drawCircle(float x, float y, float radius, const SkPaint& paint) override; 167 virtual void drawOval(float left, float top, float right, float bottom, const SkPaint& paint) override; 168 virtual void drawArc(float left, float top, float right, float bottom, 169 float startAngle, float sweepAngle, bool useCenter, const SkPaint& paint) override; 170 virtual void drawPath(const SkPath& path, const SkPaint& paint) override; drawVertices(const SkVertices *,SkBlendMode,const SkPaint & paint)171 virtual void drawVertices(const SkVertices*, SkBlendMode, const SkPaint& paint) override 172 { /* RecordingCanvas does not support drawVertices(); ignore */ } 173 174 virtual void drawVectorDrawable(VectorDrawableRoot* tree) override; 175 176 // Bitmap-based 177 virtual void drawBitmap(Bitmap& bitmap, float left, float top, const SkPaint* paint) override; 178 virtual void drawBitmap(Bitmap& bitmap, const SkMatrix& matrix, const SkPaint* paint) override; 179 virtual void drawBitmap(Bitmap& bitmap, float srcLeft, float srcTop, 180 float srcRight, float srcBottom, float dstLeft, float dstTop, 181 float dstRight, float dstBottom, const SkPaint* paint) override; 182 virtual void drawBitmapMesh(Bitmap& bitmap, int meshWidth, int meshHeight, 183 const float* vertices, const int* colors, const SkPaint* paint) override; 184 virtual void drawNinePatch(Bitmap& bitmap, const android::Res_png_9patch& chunk, 185 float dstLeft, float dstTop, float dstRight, float dstBottom, 186 const SkPaint* paint) override; 187 188 // Text drawTextAbsolutePos()189 virtual bool drawTextAbsolutePos() const override { return false; } 190 191 protected: 192 virtual void drawGlyphs(ReadGlyphFunc glyphFunc, int count, const SkPaint& paint, float x, 193 float y, float boundsLeft, float boundsTop, float boundsRight, float boundsBottom, 194 float totalAdvance) override; 195 virtual void drawLayoutOnPath(const minikin::Layout& layout, float hOffset, float vOffset, 196 const SkPaint& paint, const SkPath& path, size_t start, size_t end) override; 197 198 private: getRecordedClip()199 const ClipBase* getRecordedClip() { 200 return mState.writableSnapshot()->mutateClipArea().serializeClip(alloc()); 201 } 202 203 void drawBitmap(Bitmap& bitmap, const SkPaint* paint); 204 void drawSimpleRects(const float* rects, int vertexCount, const SkPaint* paint); 205 206 207 int addOp(RecordedOp* op); 208 // ---------------------------------------------------------------------------- 209 // lazy object copy 210 // ---------------------------------------------------------------------------- alloc()211 LinearAllocator& alloc() { return mDisplayList->allocator; } 212 213 void refBitmapsInShader(const SkShader* shader); 214 215 template<class T> refBuffer(const T * srcBuffer,int32_t count)216 inline const T* refBuffer(const T* srcBuffer, int32_t count) { 217 if (!srcBuffer) return nullptr; 218 219 T* dstBuffer = (T*) mDisplayList->allocator.alloc<T>(count * sizeof(T)); 220 memcpy(dstBuffer, srcBuffer, count * sizeof(T)); 221 return dstBuffer; 222 } 223 refPath(const SkPath * path)224 inline const SkPath* refPath(const SkPath* path) { 225 if (!path) return nullptr; 226 227 // The points/verbs within the path are refcounted so this copy operation 228 // is inexpensive and maintains the generationID of the original path. 229 const SkPath* cachedPath = new SkPath(*path); 230 mDisplayList->pathResources.push_back(cachedPath); 231 return cachedPath; 232 } 233 234 /** 235 * Returns a RenderThread-safe, const copy of the SkPaint parameter passed in 236 * (with deduping based on paint hash / equality check) 237 */ refPaint(const SkPaint * paint)238 inline const SkPaint* refPaint(const SkPaint* paint) { 239 if (!paint) return nullptr; 240 241 // If there is a draw filter apply it here and store the modified paint 242 // so that we don't need to modify the paint every time we access it. 243 SkTLazy<SkPaint> filteredPaint; 244 if (mDrawFilter.get()) { 245 filteredPaint.set(*paint); 246 mDrawFilter->filter(filteredPaint.get(), SkDrawFilter::kPaint_Type); 247 paint = filteredPaint.get(); 248 } 249 250 // compute the hash key for the paint and check the cache. 251 const uint32_t key = paint->getHash(); 252 const SkPaint* cachedPaint = mPaintMap.valueFor(key); 253 // In the unlikely event that 2 unique paints have the same hash we do a 254 // object equality check to ensure we don't erroneously dedup them. 255 if (cachedPaint == nullptr || *cachedPaint != *paint) { 256 cachedPaint = new SkPaint(*paint); 257 mDisplayList->paints.emplace_back(cachedPaint); 258 // replaceValueFor() performs an add if the entry doesn't exist 259 mPaintMap.replaceValueFor(key, cachedPaint); 260 refBitmapsInShader(cachedPaint->getShader()); 261 } 262 263 return cachedPaint; 264 } 265 refRegion(const SkRegion * region)266 inline const SkRegion* refRegion(const SkRegion* region) { 267 if (!region) { 268 return region; 269 } 270 271 const SkRegion* cachedRegion = mRegionMap.valueFor(region); 272 // TODO: Add generation ID to SkRegion 273 if (cachedRegion == nullptr) { 274 std::unique_ptr<const SkRegion> copy(new SkRegion(*region)); 275 cachedRegion = copy.get(); 276 mDisplayList->regions.push_back(std::move(copy)); 277 278 // replaceValueFor() performs an add if the entry doesn't exist 279 mRegionMap.replaceValueFor(region, cachedRegion); 280 } 281 282 return cachedRegion; 283 } 284 refBitmap(Bitmap & bitmap)285 inline Bitmap* refBitmap(Bitmap& bitmap) { 286 // Note that this assumes the bitmap is immutable. There are cases this won't handle 287 // correctly, such as creating the bitmap from scratch, drawing with it, changing its 288 // contents, and drawing again. The only fix would be to always copy it the first time, 289 // which doesn't seem worth the extra cycles for this unlikely case. 290 291 // this is required because sk_sp's ctor adopts the pointer, 292 // but does not increment the refcount, 293 bitmap.ref(); 294 mDisplayList->bitmapResources.emplace_back(&bitmap); 295 return &bitmap; 296 } 297 refPatch(const Res_png_9patch * patch)298 inline const Res_png_9patch* refPatch(const Res_png_9patch* patch) { 299 mDisplayList->patchResources.push_back(patch); 300 mResourceCache.incrementRefcount(patch); 301 return patch; 302 } 303 304 DefaultKeyedVector<uint32_t, const SkPaint*> mPaintMap; 305 DefaultKeyedVector<const SkPath*, const SkPath*> mPathMap; 306 DefaultKeyedVector<const SkRegion*, const SkRegion*> mRegionMap; 307 308 CanvasState mState; 309 std::unique_ptr<SkiaCanvasProxy> mSkiaCanvasProxy; 310 ResourceCache& mResourceCache; 311 DeferredBarrierType mDeferredBarrierType = DeferredBarrierType::None; 312 const ClipBase* mDeferredBarrierClip = nullptr; 313 DisplayList* mDisplayList = nullptr; 314 bool mHighContrastText = false; 315 sk_sp<SkDrawFilter> mDrawFilter; 316 }; // class RecordingCanvas 317 318 }; // namespace uirenderer 319 }; // namespace android 320 321 #endif // ANDROID_HWUI_RECORDING_CANVAS_H 322