SkiaRecordingCanvas.cpp revision 88e0891f6657573a5ad918c2d76d6c02bb8ceba3 
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
17#include "SkiaRecordingCanvas.h"
18
19#include "Layer.h"
20#include "RenderNode.h"
21#include "LayerDrawable.h"
22#include "NinePatchUtils.h"
23#include "pipeline/skia/AnimatedDrawables.h"
24
25namespace android {
26namespace uirenderer {
27namespace skiapipeline {
28
29// ----------------------------------------------------------------------------
30// Recording Canvas Setup
31// ----------------------------------------------------------------------------
32
33void SkiaRecordingCanvas::initDisplayList(uirenderer::RenderNode* renderNode, int width,
34        int height) {
35    mCurrentBarrier = nullptr;
36    SkASSERT(mDisplayList.get() == nullptr);
37
38    if (renderNode) {
39        mDisplayList = renderNode->detachAvailableList();
40    }
41    SkRect bounds = SkRect::MakeWH(width, height);
42    if (mDisplayList) {
43        mDisplayList->reset(bounds);
44    } else {
45        mDisplayList.reset(new SkiaDisplayList(bounds));
46    }
47
48    mRecorder.reset(mDisplayList->mDrawable.get());
49    SkiaCanvas::reset(&mRecorder);
50}
51
52uirenderer::DisplayList* SkiaRecordingCanvas::finishRecording() {
53    // close any existing chunks if necessary
54    insertReorderBarrier(false);
55    mRecorder.restoreToCount(1);
56    return mDisplayList.release();
57}
58
59// ----------------------------------------------------------------------------
60// Recording Canvas draw operations: View System
61// ----------------------------------------------------------------------------
62
63void SkiaRecordingCanvas::drawRoundRect(uirenderer::CanvasPropertyPrimitive* left,
64        uirenderer::CanvasPropertyPrimitive* top, uirenderer::CanvasPropertyPrimitive* right,
65        uirenderer::CanvasPropertyPrimitive* bottom, uirenderer::CanvasPropertyPrimitive* rx,
66        uirenderer::CanvasPropertyPrimitive* ry, uirenderer::CanvasPropertyPaint* paint) {
67    drawDrawable(mDisplayList->allocateDrawable<AnimatedRoundRect>(left, top, right, bottom,
68            rx, ry, paint));
69}
70
71void SkiaRecordingCanvas::drawCircle(uirenderer::CanvasPropertyPrimitive* x,
72        uirenderer::CanvasPropertyPrimitive* y, uirenderer::CanvasPropertyPrimitive* radius,
73        uirenderer::CanvasPropertyPaint* paint) {
74    drawDrawable(mDisplayList->allocateDrawable<AnimatedCircle>(x, y, radius, paint));
75}
76
77void SkiaRecordingCanvas::insertReorderBarrier(bool enableReorder) {
78    if (nullptr != mCurrentBarrier) {
79        // finish off the existing chunk
80        SkDrawable* drawable =
81                mDisplayList->allocateDrawable<EndReorderBarrierDrawable>(
82                mCurrentBarrier);
83        mCurrentBarrier = nullptr;
84        drawDrawable(drawable);
85    }
86    if (enableReorder) {
87        mCurrentBarrier = (StartReorderBarrierDrawable*)
88                mDisplayList->allocateDrawable<StartReorderBarrierDrawable>(
89                mDisplayList.get());
90        drawDrawable(mCurrentBarrier);
91    }
92}
93
94void SkiaRecordingCanvas::drawLayer(uirenderer::DeferredLayerUpdater* layerUpdater) {
95    if (layerUpdater != nullptr && layerUpdater->backingLayer() != nullptr) {
96        uirenderer::Layer* layer = layerUpdater->backingLayer();
97        sk_sp<SkDrawable> drawable(new LayerDrawable(layer));
98        drawDrawable(drawable.get());
99    }
100}
101
102void SkiaRecordingCanvas::drawRenderNode(uirenderer::RenderNode* renderNode) {
103    // record the child node
104    mDisplayList->mChildNodes.emplace_back(renderNode, asSkCanvas(), true, mCurrentBarrier);
105    auto& renderNodeDrawable = mDisplayList->mChildNodes.back();
106    drawDrawable(&renderNodeDrawable);
107
108    // use staging property, since recording on UI thread
109    if (renderNode->stagingProperties().isProjectionReceiver()) {
110        mDisplayList->mProjectionReceiver = &renderNodeDrawable;
111        // set projectionReceiveIndex so that RenderNode.hasProjectionReceiver returns true
112        mDisplayList->projectionReceiveIndex = mDisplayList->mChildNodes.size() - 1;
113    }
114}
115
116void SkiaRecordingCanvas::callDrawGLFunction(Functor* functor,
117        uirenderer::GlFunctorLifecycleListener* listener) {
118    mDisplayList->mChildFunctors.emplace_back(functor, listener, asSkCanvas());
119    drawDrawable(&mDisplayList->mChildFunctors.back());
120}
121
122class VectorDrawable : public SkDrawable {
123 public:
124    VectorDrawable(VectorDrawableRoot* tree) : mRoot(tree) {}
125
126 protected:
127     virtual SkRect onGetBounds() override {
128         return SkRect::MakeLargest();
129     }
130     virtual void onDraw(SkCanvas* canvas) override {
131         Bitmap& hwuiBitmap = mRoot->getBitmapUpdateIfDirty();
132         SkBitmap bitmap;
133         hwuiBitmap.getSkBitmap(&bitmap);
134         SkPaint* paint = mRoot->getPaint();
135         canvas->drawBitmapRect(bitmap, mRoot->mutateProperties()->getBounds(), paint);
136         /*
137          * TODO we can draw this directly but need to address the following...
138          *
139          * 1) Add drawDirect(SkCanvas*) to VectorDrawableRoot
140          * 2) fix VectorDrawable.cpp's Path::draw to not make a temporary path
141          *    so that we don't break caching
142          * 3) figure out how to set path's as volatile during animation
143          * 4) if mRoot->getPaint() != null either promote to layer (during
144          *    animation) or cache in SkSurface (for static content)
145          *
146          */
147     }
148
149 private:
150    sp<VectorDrawableRoot> mRoot;
151};
152
153void SkiaRecordingCanvas::drawVectorDrawable(VectorDrawableRoot* tree) {
154    drawDrawable(mDisplayList->allocateDrawable<VectorDrawable>(tree));
155    mDisplayList->mVectorDrawables.push_back(tree);
156}
157
158// ----------------------------------------------------------------------------
159// Recording Canvas draw operations: Bitmaps
160// ----------------------------------------------------------------------------
161
162inline static const SkPaint* nonAAPaint(const SkPaint* origPaint, SkPaint* tmpPaint) {
163    if (origPaint && origPaint->isAntiAlias()) {
164        *tmpPaint = *origPaint;
165        tmpPaint->setAntiAlias(false);
166        return tmpPaint;
167    } else {
168        return origPaint;
169    }
170}
171
172void SkiaRecordingCanvas::drawBitmap(Bitmap& bitmap, float left, float top, const SkPaint* paint) {
173    SkBitmap skBitmap;
174    bitmap.getSkBitmap(&skBitmap);
175
176    sk_sp<SkImage> image = SkMakeImageFromRasterBitmap(skBitmap, kNever_SkCopyPixelsMode);
177    if (!skBitmap.isImmutable()) {
178        mDisplayList->mMutableImages.push_back(image.get());
179    }
180    SkPaint tmpPaint;
181    mRecorder.drawImage(image, left, top, nonAAPaint(paint, &tmpPaint));
182}
183
184void SkiaRecordingCanvas::drawBitmap(Bitmap& hwuiBitmap, const SkMatrix& matrix,
185        const SkPaint* paint) {
186    SkBitmap bitmap;
187    hwuiBitmap.getSkBitmap(&bitmap);
188    SkAutoCanvasRestore acr(&mRecorder, true);
189    concat(matrix);
190    sk_sp<SkImage> image = SkMakeImageFromRasterBitmap(bitmap, kNever_SkCopyPixelsMode);
191    if (!bitmap.isImmutable()) {
192        mDisplayList->mMutableImages.push_back(image.get());
193    }
194    SkPaint tmpPaint;
195    mRecorder.drawImage(image, 0, 0, nonAAPaint(paint, &tmpPaint));
196}
197
198void SkiaRecordingCanvas::drawBitmap(Bitmap& hwuiBitmap, float srcLeft, float srcTop,
199        float srcRight, float srcBottom, float dstLeft, float dstTop, float dstRight,
200        float dstBottom, const SkPaint* paint) {
201    SkBitmap bitmap;
202    hwuiBitmap.getSkBitmap(&bitmap);
203    SkRect srcRect = SkRect::MakeLTRB(srcLeft, srcTop, srcRight, srcBottom);
204    SkRect dstRect = SkRect::MakeLTRB(dstLeft, dstTop, dstRight, dstBottom);
205    sk_sp<SkImage> image = SkMakeImageFromRasterBitmap(bitmap, kNever_SkCopyPixelsMode);
206    if (!bitmap.isImmutable()) {
207        mDisplayList->mMutableImages.push_back(image.get());
208    }
209    SkPaint tmpPaint;
210    mRecorder.drawImageRect(image, srcRect, dstRect, nonAAPaint(paint, &tmpPaint));
211}
212
213void SkiaRecordingCanvas::drawNinePatch(Bitmap& hwuiBitmap, const Res_png_9patch& chunk,
214        float dstLeft, float dstTop, float dstRight, float dstBottom, const SkPaint* paint) {
215    SkBitmap bitmap;
216    hwuiBitmap.getSkBitmap(&bitmap);
217
218    SkCanvas::Lattice lattice;
219    NinePatchUtils::SetLatticeDivs(&lattice, chunk, bitmap.width(), bitmap.height());
220
221    lattice.fFlags = nullptr;
222    int numFlags = 0;
223    if (chunk.numColors > 0 && chunk.numColors == NinePatchUtils::NumDistinctRects(lattice)) {
224        // We can expect the framework to give us a color for every distinct rect.
225        // Skia requires placeholder flags for degenerate rects.
226        numFlags = (lattice.fXCount + 1) * (lattice.fYCount + 1);
227    }
228
229    SkAutoSTMalloc<25, SkCanvas::Lattice::Flags> flags(numFlags);
230    if (numFlags > 0) {
231        NinePatchUtils::SetLatticeFlags(&lattice, flags.get(), numFlags, chunk);
232    }
233
234    lattice.fBounds = nullptr;
235    SkRect dst = SkRect::MakeLTRB(dstLeft, dstTop, dstRight, dstBottom);
236    sk_sp<SkImage> image = SkMakeImageFromRasterBitmap(bitmap, kNever_SkCopyPixelsMode);
237    if (!bitmap.isImmutable()) {
238        mDisplayList->mMutableImages.push_back(image.get());
239    }
240
241    SkPaint tmpPaint;
242    mRecorder.drawImageLattice(image.get(), lattice, dst, nonAAPaint(paint, &tmpPaint));
243}
244
245}; // namespace skiapipeline
246}; // namespace uirenderer
247}; // namespace android
248