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      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 <SkLiteRecorder.h>
     19 #include "ReorderBarrierDrawables.h"
     20 #include "SkiaCanvas.h"
     21 #include "SkiaDisplayList.h"
     22 
     23 namespace android {
     24 namespace uirenderer {
     25 namespace skiapipeline {
     26 
     27 /**
     28  * A SkiaCanvas implementation that records drawing operations for deferred rendering backed by a
     29  * SkLiteRecorder and a SkiaDisplayList.
     30  */
     31 class SkiaRecordingCanvas : public SkiaCanvas {
     32 public:
     33     explicit SkiaRecordingCanvas(uirenderer::RenderNode* renderNode, int width, int height) {
     34         initDisplayList(renderNode, width, height);
     35     }
     36 
     37     virtual void setBitmap(const SkBitmap& bitmap) override {
     38         LOG_ALWAYS_FATAL("DisplayListCanvas is not backed by a bitmap.");
     39     }
     40 
     41     virtual void resetRecording(int width, int height,
     42                                 uirenderer::RenderNode* renderNode) override {
     43         initDisplayList(renderNode, width, height);
     44     }
     45 
     46     virtual uirenderer::DisplayList* finishRecording() override;
     47 
     48     virtual void drawBitmap(Bitmap& bitmap, float left, float top, const SkPaint* paint) override;
     49     virtual void drawBitmap(Bitmap& bitmap, const SkMatrix& matrix, const SkPaint* paint) override;
     50     virtual void drawBitmap(Bitmap& bitmap, float srcLeft, float srcTop, float srcRight,
     51                             float srcBottom, float dstLeft, float dstTop, float dstRight,
     52                             float dstBottom, const SkPaint* paint) override;
     53     virtual void drawNinePatch(Bitmap& hwuiBitmap, const android::Res_png_9patch& chunk,
     54                                float dstLeft, float dstTop, float dstRight, float dstBottom,
     55                                const SkPaint* paint) override;
     56     virtual double drawAnimatedImage(AnimatedImageDrawable* animatedImage) override;
     57 
     58     virtual void drawRoundRect(uirenderer::CanvasPropertyPrimitive* left,
     59                                uirenderer::CanvasPropertyPrimitive* top,
     60                                uirenderer::CanvasPropertyPrimitive* right,
     61                                uirenderer::CanvasPropertyPrimitive* bottom,
     62                                uirenderer::CanvasPropertyPrimitive* rx,
     63                                uirenderer::CanvasPropertyPrimitive* ry,
     64                                uirenderer::CanvasPropertyPaint* paint) override;
     65     virtual void drawCircle(uirenderer::CanvasPropertyPrimitive* x,
     66                             uirenderer::CanvasPropertyPrimitive* y,
     67                             uirenderer::CanvasPropertyPrimitive* radius,
     68                             uirenderer::CanvasPropertyPaint* paint) override;
     69 
     70     virtual void drawVectorDrawable(VectorDrawableRoot* vectorDrawable) override;
     71 
     72     virtual void insertReorderBarrier(bool enableReorder) override;
     73     virtual void drawLayer(uirenderer::DeferredLayerUpdater* layerHandle) override;
     74     virtual void drawRenderNode(uirenderer::RenderNode* renderNode) override;
     75     virtual void callDrawGLFunction(Functor* functor,
     76                                     uirenderer::GlFunctorLifecycleListener* listener) override;
     77 
     78 private:
     79     SkLiteRecorder mRecorder;
     80     std::unique_ptr<SkiaDisplayList> mDisplayList;
     81     StartReorderBarrierDrawable* mCurrentBarrier;
     82 
     83     /**
     84      *  A new SkiaDisplayList is created or recycled if available.
     85      *
     86      *  @param renderNode is optional and used to recycle an old display list.
     87      *  @param width used to calculate recording bounds.
     88      *  @param height used to calculate recording bounds.
     89      */
     90     void initDisplayList(uirenderer::RenderNode* renderNode, int width, int height);
     91 
     92     inline static const SkPaint* bitmapPaint(const SkPaint* origPaint, SkPaint* tmpPaint,
     93                                              sk_sp<SkColorFilter> colorSpaceFilter) {
     94         bool fixBlending = false;
     95         bool fixAA = false;
     96         if (origPaint) {
     97             // kClear blend mode is drawn as kDstOut on HW for compatibility with Android O and
     98             // older.
     99             fixBlending = sApiLevel <= 27 && origPaint->getBlendMode() == SkBlendMode::kClear;
    100             fixAA = origPaint->isAntiAlias();
    101         }
    102 
    103         if (fixBlending || fixAA || colorSpaceFilter) {
    104             if (origPaint) {
    105                 *tmpPaint = *origPaint;
    106             }
    107 
    108             if (fixBlending) {
    109                 tmpPaint->setBlendMode(SkBlendMode::kDstOut);
    110             }
    111 
    112             if (colorSpaceFilter) {
    113                 if (tmpPaint->getColorFilter()) {
    114                     tmpPaint->setColorFilter(SkColorFilter::MakeComposeFilter(
    115                             tmpPaint->refColorFilter(), colorSpaceFilter));
    116                 } else {
    117                     tmpPaint->setColorFilter(colorSpaceFilter);
    118                 }
    119                 LOG_ALWAYS_FATAL_IF(!tmpPaint->getColorFilter());
    120             }
    121 
    122             // disabling AA on bitmap draws matches legacy HWUI behavior
    123             tmpPaint->setAntiAlias(false);
    124             return tmpPaint;
    125         } else {
    126             return origPaint;
    127         }
    128     }
    129 
    130 };
    131 
    132 };  // namespace skiapipeline
    133 };  // namespace uirenderer
    134 };  // namespace android
    135