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 #pragma once
18 
19 #include "DeferredLayerUpdater.h"
20 
21 #include <SkCanvas.h>
22 #include <SkDrawable.h>
23 
24 namespace android {
25 namespace uirenderer {
26 namespace skiapipeline {
27 
28 /*
29  * Draws a layer backed by an OpenGL texture into a SkCanvas.
30  */
31 class LayerDrawable : public SkDrawable {
32 public:
LayerDrawable(DeferredLayerUpdater * layerUpdater)33     explicit LayerDrawable(DeferredLayerUpdater* layerUpdater) : mLayerUpdater(layerUpdater) {}
34 
35     static bool DrawLayer(GrContext* context, SkCanvas* canvas, Layer* layer, const SkRect* srcRect,
36                           const SkRect* dstRect, bool useLayerTransform);
37 
38 protected:
onGetBounds()39     virtual SkRect onGetBounds() override {
40         return SkRect::MakeWH(mLayerUpdater->getWidth(), mLayerUpdater->getHeight());
41     }
42     virtual void onDraw(SkCanvas* canvas) override;
43 
44 private:
45     sp<DeferredLayerUpdater> mLayerUpdater;
46 };
47 
48 }  // namespace skiapipeline
49 }  // namespace uirenderer
50 }  // namespace android
51