SkiaRecordingCanvas.h revision 021693b967a2c5556dddd183eb0247df4079e1ad 
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 "SkiaCanvas.h"
19#include "SkiaDisplayList.h"
20#include "ReorderBarrierDrawables.h"
21#include <SkLiteRecorder.h>
22
23namespace android {
24namespace uirenderer {
25namespace skiapipeline {
26
27/**
28 * A SkiaCanvas implementation that records drawing operations for deferred rendering backed by a
29 * SkLiteRecorder and a SkiaDisplayList.
30 */
31class 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,
49            const SkPaint* paint) override;
50    virtual void drawBitmap(Bitmap& bitmap, const SkMatrix& matrix,
51            const SkPaint* paint) override;
52    virtual void drawBitmap(Bitmap& bitmap, float srcLeft, float srcTop,
53            float srcRight, float srcBottom, float dstLeft, float dstTop,
54            float dstRight, float dstBottom, const SkPaint* paint) override;
55    virtual void drawNinePatch(Bitmap& hwuiBitmap, const android::Res_png_9patch& chunk,
56            float dstLeft, float dstTop, float dstRight, float dstBottom,
57            const SkPaint* paint) override;
58
59    virtual void drawRoundRect(uirenderer::CanvasPropertyPrimitive* left,
60            uirenderer::CanvasPropertyPrimitive* top, uirenderer::CanvasPropertyPrimitive* right,
61            uirenderer::CanvasPropertyPrimitive* bottom, uirenderer::CanvasPropertyPrimitive* rx,
62            uirenderer::CanvasPropertyPrimitive* ry,
63            uirenderer::CanvasPropertyPaint* paint) override;
64    virtual void drawCircle(uirenderer::CanvasPropertyPrimitive* x,
65            uirenderer::CanvasPropertyPrimitive* y, uirenderer::CanvasPropertyPrimitive* radius,
66            uirenderer::CanvasPropertyPaint* paint) override;
67
68    virtual void drawVectorDrawable(VectorDrawableRoot* vectorDrawable) override;
69
70    virtual void insertReorderBarrier(bool enableReorder) override;
71    virtual void drawLayer(uirenderer::DeferredLayerUpdater* layerHandle) override;
72    virtual void drawRenderNode(uirenderer::RenderNode* renderNode) override;
73    virtual void callDrawGLFunction(Functor* functor,
74                                    uirenderer::GlFunctorLifecycleListener* listener) override;
75
76private:
77    SkLiteRecorder mRecorder;
78    std::unique_ptr<SkiaDisplayList> mDisplayList;
79    bool mBarrierPending;
80    StartReorderBarrierDrawable* mCurrentBarrier;
81
82    /**
83     *  A new SkiaDisplayList is created or recycled if available.
84     *
85     *  @param renderNode is optional and used to recycle an old display list.
86     *  @param width used to calculate recording bounds.
87     *  @param height used to calculate recording bounds.
88     */
89    void initDisplayList(uirenderer::RenderNode* renderNode, int width, int height);
90};
91
92}; // namespace skiapipeline
93}; // namespace uirenderer
94}; // namespace android
95