1 /* 2 * Copyright (C) 2010 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 <utils/RefBase.h> 20 21 #include <SkBlendMode.h> 22 #include <SkColorFilter.h> 23 #include <SkColorSpace.h> 24 #include <SkPaint.h> 25 #include <SkImage.h> 26 #include <SkMatrix.h> 27 #include <system/graphics.h> 28 29 namespace android { 30 namespace uirenderer { 31 32 /////////////////////////////////////////////////////////////////////////////// 33 // Layers 34 /////////////////////////////////////////////////////////////////////////////// 35 36 class RenderState; 37 38 /** 39 * A layer has dimensions and is backed by a backend specific texture or framebuffer. 40 */ 41 class Layer : public VirtualLightRefBase { 42 public: 43 Layer(RenderState& renderState, sk_sp<SkColorFilter>, int alpha, SkBlendMode mode); 44 45 ~Layer(); 46 getWidth()47 uint32_t getWidth() const { return mWidth; } 48 getHeight()49 uint32_t getHeight() const { return mHeight; } 50 setSize(uint32_t width,uint32_t height)51 void setSize(uint32_t width, uint32_t height) { mWidth = width; mHeight = height; } 52 setBlend(bool blend)53 void setBlend(bool blend) { mBlend = blend; } 54 isBlend()55 bool isBlend() const { return mBlend; } 56 setForceFilter(bool forceFilter)57 inline void setForceFilter(bool forceFilter) { this->forceFilter = forceFilter; } 58 getForceFilter()59 inline bool getForceFilter() const { return forceFilter; } 60 setAlpha(int alpha)61 inline void setAlpha(int alpha) { this->alpha = alpha; } 62 setAlpha(int alpha,SkBlendMode mode)63 inline void setAlpha(int alpha, SkBlendMode mode) { 64 this->alpha = alpha; 65 this->mode = mode; 66 } 67 getAlpha()68 inline int getAlpha() const { return alpha; } 69 70 SkBlendMode getMode() const; 71 getColorFilter()72 inline sk_sp<SkColorFilter> getColorFilter() const { return mColorFilter; } 73 setColorFilter(sk_sp<SkColorFilter> filter)74 void setColorFilter(sk_sp<SkColorFilter> filter) { mColorFilter = filter; }; 75 getTexTransform()76 inline SkMatrix& getTexTransform() { return texTransform; } 77 getTransform()78 inline SkMatrix& getTransform() { return transform; } 79 80 /** 81 * Posts a decStrong call to the appropriate thread. 82 * Thread-safe. 83 */ 84 void postDecStrong(); 85 setImage(const sk_sp<SkImage> & image)86 inline void setImage(const sk_sp<SkImage>& image) { this->layerImage = image; } 87 getImage()88 inline sk_sp<SkImage> getImage() const { return this->layerImage; } 89 90 protected: 91 92 RenderState& mRenderState; 93 94 private: 95 /** 96 * Color filter used to draw this layer. Optional. 97 */ 98 sk_sp<SkColorFilter> mColorFilter; 99 100 /** 101 * Indicates raster data backing the layer is scaled, requiring filtration. 102 */ 103 bool forceFilter = false; 104 105 /** 106 * Opacity of the layer. 107 */ 108 int alpha; 109 110 /** 111 * Blending mode of the layer. 112 */ 113 SkBlendMode mode; 114 115 /** 116 * Optional texture coordinates transform. 117 */ 118 SkMatrix texTransform; 119 120 /** 121 * Optional transform. 122 */ 123 SkMatrix transform; 124 125 /** 126 * An image backing the layer. 127 */ 128 sk_sp<SkImage> layerImage; 129 130 /** 131 * layer width. 132 */ 133 uint32_t mWidth = 0; 134 135 /** 136 * layer height. 137 */ 138 uint32_t mHeight = 0; 139 140 /** 141 * enable blending 142 */ 143 bool mBlend = false; 144 145 }; // struct Layer 146 147 } // namespace uirenderer 148 } // namespace android 149