2 * Copyright (C) 2015 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 #ifndef ANDROID_HWUI_RECORDING_CANVAS_H
18 #define ANDROID_HWUI_RECORDING_CANVAS_H
20 #include "CanvasState.h"
21 #include "DisplayList.h"
22 #include "ResourceCache.h"
23 #include "SkiaCanvasProxy.h"
25 #include "hwui/Canvas.h"
26 #include "utils/LinearAllocator.h"
27 #include "utils/Macros.h"
28 #include "utils/NinePatch.h"
30 #include <SkDrawFilter.h>
37 namespace uirenderer {
40 class DeferredLayerUpdater;
43 class ANDROID_API RecordingCanvas: public Canvas, public CanvasStateClient {
44 enum class DeferredBarrierType {
50 RecordingCanvas(size_t width, size_t height);
51 virtual ~RecordingCanvas();
53 virtual void resetRecording(int width, int height) override;
54 virtual WARN_UNUSED_RESULT DisplayList* finishRecording() override;
55 // ----------------------------------------------------------------------------
56 // MISC HWUI OPERATIONS - TODO: CATEGORIZE
57 // ----------------------------------------------------------------------------
58 virtual void insertReorderBarrier(bool enableReorder) override;
60 virtual void drawLayer(DeferredLayerUpdater* layerHandle) override;
61 virtual void drawRenderNode(RenderNode* renderNode) override;
62 virtual void callDrawGLFunction(Functor* functor,
63 GlFunctorLifecycleListener* listener) override;
65 // ----------------------------------------------------------------------------
66 // CanvasStateClient interface
67 // ----------------------------------------------------------------------------
68 virtual void onViewportInitialized() override;
69 virtual void onSnapshotRestored(const Snapshot& removed, const Snapshot& restored) override;
70 virtual GLuint getTargetFbo() const override { return -1; }
72 // ----------------------------------------------------------------------------
73 // HWUI Canvas draw operations
74 // ----------------------------------------------------------------------------
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;
83 // ----------------------------------------------------------------------------
84 // android/graphics/Canvas interface
85 // ----------------------------------------------------------------------------
86 virtual SkCanvas* asSkCanvas() override;
88 virtual void setBitmap(const SkBitmap& bitmap) override {
89 LOG_ALWAYS_FATAL("RecordingCanvas is not backed by a bitmap.");
92 virtual bool isOpaque() override { return false; }
93 virtual int width() override { return mState.getWidth(); }
94 virtual int height() override { return mState.getHeight(); }
96 virtual void setHighContrastText(bool highContrastText) override {
97 mHighContrastText = highContrastText;
99 virtual bool isHighContrastText() override { return mHighContrastText; }
101 // ----------------------------------------------------------------------------
102 // android/graphics/Canvas state operations
103 // ----------------------------------------------------------------------------
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;
110 virtual int saveLayer(float left, float top, float right, float bottom, const SkPaint* paint,
111 SaveFlags::Flags flags) override;
112 virtual int saveLayerAlpha(float left, float top, float right, float bottom,
113 int alpha, SaveFlags::Flags flags) override {
115 paint.setAlpha(alpha);
116 return saveLayer(left, top, right, bottom, &paint, flags);
120 virtual void getMatrix(SkMatrix* outMatrix) const override { mState.getMatrix(outMatrix); }
121 virtual void setMatrix(const SkMatrix& matrix) override { mState.setMatrix(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;
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;
134 virtual bool clipRect(float left, float top, float right, float bottom, SkRegion::Op op) override;
135 virtual bool clipPath(const SkPath* path, SkRegion::Op op) override;
136 virtual bool clipRegion(const SkRegion* region, SkRegion::Op op) override;
139 virtual SkDrawFilter* getDrawFilter() override { return mDrawFilter.get(); }
140 virtual void setDrawFilter(SkDrawFilter* filter) override {
141 mDrawFilter.reset(SkSafeRef(filter));
144 // ----------------------------------------------------------------------------
145 // android/graphics/Canvas draw operations
146 // ----------------------------------------------------------------------------
147 virtual void drawColor(int color, SkXfermode::Mode mode) override;
148 virtual void drawPaint(const SkPaint& paint) override;
151 virtual void drawPoint(float x, float y, const SkPaint& paint) override {
152 float points[2] = { x, y };
153 drawPoints(points, 2, paint);
155 virtual void drawPoints(const float* points, int floatCount, const SkPaint& paint) override;
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);
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;
171 virtual void drawVertices(SkCanvas::VertexMode vertexMode, int vertexCount,
172 const float* verts, const float* tex, const int* colors,
173 const uint16_t* indices, int indexCount, const SkPaint& paint) override
174 { /* RecordingCanvas does not support drawVertices(); ignore */ }
176 virtual void drawVectorDrawable(VectorDrawableRoot* tree) override;
179 virtual void drawBitmap(const SkBitmap& bitmap, float left, float top, const SkPaint* paint) override;
180 virtual void drawBitmap(const SkBitmap& bitmap, const SkMatrix& matrix,
181 const SkPaint* paint) override;
182 virtual void drawBitmap(const SkBitmap& bitmap, float srcLeft, float srcTop,
183 float srcRight, float srcBottom, float dstLeft, float dstTop,
184 float dstRight, float dstBottom, const SkPaint* paint) override;
185 virtual void drawBitmapMesh(const SkBitmap& bitmap, int meshWidth, int meshHeight,
186 const float* vertices, const int* colors, const SkPaint* paint) override;
187 virtual void drawNinePatch(const SkBitmap& bitmap, const android::Res_png_9patch& chunk,
188 float dstLeft, float dstTop, float dstRight, float dstBottom,
189 const SkPaint* paint) override;
192 virtual bool drawTextAbsolutePos() const override { return false; }
195 virtual void drawGlyphs(const uint16_t* text, const float* positions, int count,
196 const SkPaint& paint, float x, float y,
197 float boundsLeft, float boundsTop, float boundsRight, float boundsBottom,
198 float totalAdvance) override;
199 virtual void drawGlyphsOnPath(const uint16_t* glyphs, int count, const SkPath& path,
200 float hOffset, float vOffset, const SkPaint& paint) override;
203 const ClipBase* getRecordedClip() {
204 return mState.writableSnapshot()->mutateClipArea().serializeClip(alloc());
207 void drawBitmap(const SkBitmap* bitmap, const SkPaint* paint);
208 void drawSimpleRects(const float* rects, int vertexCount, const SkPaint* paint);
211 int addOp(RecordedOp* op);
212 // ----------------------------------------------------------------------------
214 // ----------------------------------------------------------------------------
215 LinearAllocator& alloc() { return mDisplayList->allocator; }
217 void refBitmapsInShader(const SkShader* shader);
220 inline const T* refBuffer(const T* srcBuffer, int32_t count) {
221 if (!srcBuffer) return nullptr;
223 T* dstBuffer = (T*) mDisplayList->allocator.alloc<T>(count * sizeof(T));
224 memcpy(dstBuffer, srcBuffer, count * sizeof(T));
228 inline const SkPath* refPath(const SkPath* path) {
229 if (!path) return nullptr;
231 // The points/verbs within the path are refcounted so this copy operation
232 // is inexpensive and maintains the generationID of the original path.
233 const SkPath* cachedPath = new SkPath(*path);
234 mDisplayList->pathResources.push_back(cachedPath);
239 * Returns a RenderThread-safe, const copy of the SkPaint parameter passed in
240 * (with deduping based on paint hash / equality check)
242 inline const SkPaint* refPaint(const SkPaint* paint) {
243 if (!paint) return nullptr;
245 // If there is a draw filter apply it here and store the modified paint
246 // so that we don't need to modify the paint every time we access it.
247 SkTLazy<SkPaint> filteredPaint;
248 if (mDrawFilter.get()) {
249 filteredPaint.set(*paint);
250 mDrawFilter->filter(filteredPaint.get(), SkDrawFilter::kPaint_Type);
251 paint = filteredPaint.get();
254 // compute the hash key for the paint and check the cache.
255 const uint32_t key = paint->getHash();
256 const SkPaint* cachedPaint = mPaintMap.valueFor(key);
257 // In the unlikely event that 2 unique paints have the same hash we do a
258 // object equality check to ensure we don't erroneously dedup them.
259 if (cachedPaint == nullptr || *cachedPaint != *paint) {
260 cachedPaint = new SkPaint(*paint);
261 mDisplayList->paints.emplace_back(cachedPaint);
262 // replaceValueFor() performs an add if the entry doesn't exist
263 mPaintMap.replaceValueFor(key, cachedPaint);
264 refBitmapsInShader(cachedPaint->getShader());
270 inline const SkRegion* refRegion(const SkRegion* region) {
275 const SkRegion* cachedRegion = mRegionMap.valueFor(region);
276 // TODO: Add generation ID to SkRegion
277 if (cachedRegion == nullptr) {
278 std::unique_ptr<const SkRegion> copy(new SkRegion(*region));
279 cachedRegion = copy.get();
280 mDisplayList->regions.push_back(std::move(copy));
282 // replaceValueFor() performs an add if the entry doesn't exist
283 mRegionMap.replaceValueFor(region, cachedRegion);
289 inline const SkBitmap* refBitmap(const SkBitmap& bitmap) {
290 // Note that this assumes the bitmap is immutable. There are cases this won't handle
291 // correctly, such as creating the bitmap from scratch, drawing with it, changing its
292 // contents, and drawing again. The only fix would be to always copy it the first time,
293 // which doesn't seem worth the extra cycles for this unlikely case.
294 SkBitmap* localBitmap = alloc().create<SkBitmap>(bitmap);
295 mDisplayList->bitmapResources.push_back(localBitmap);
299 inline const Res_png_9patch* refPatch(const Res_png_9patch* patch) {
300 mDisplayList->patchResources.push_back(patch);
301 mResourceCache.incrementRefcount(patch);
305 DefaultKeyedVector<uint32_t, const SkPaint*> mPaintMap;
306 DefaultKeyedVector<const SkPath*, const SkPath*> mPathMap;
307 DefaultKeyedVector<const SkRegion*, const SkRegion*> mRegionMap;
310 std::unique_ptr<SkiaCanvasProxy> mSkiaCanvasProxy;
311 ResourceCache& mResourceCache;
312 DeferredBarrierType mDeferredBarrierType = DeferredBarrierType::None;
313 const ClipBase* mDeferredBarrierClip = nullptr;
314 DisplayList* mDisplayList = nullptr;
315 bool mHighContrastText = false;
316 SkAutoTUnref<SkDrawFilter> mDrawFilter;
317 }; // class RecordingCanvas
319 }; // namespace uirenderer
320 }; // namespace android
322 #endif // ANDROID_HWUI_RECORDING_CANVAS_H