GammaFontRenderer.h revision c15008e72ec00ca20a271c3006dac649fd07533b
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#ifndef ANDROID_HWUI_GAMMA_FONT_RENDERER_H 18#define ANDROID_HWUI_GAMMA_FONT_RENDERER_H 19 20#include <SkPaint.h> 21 22#include "FontRenderer.h" 23 24namespace android { 25namespace uirenderer { 26 27struct GammaFontRenderer { 28 GammaFontRenderer(); 29 30 FontRenderer& getFontRenderer(const SkPaint* paint); 31 32 uint32_t getFontRendererCount() const { 33 return 3; 34 } 35 36 uint32_t getFontRendererSize(uint32_t fontRenderer) const { 37 switch (fontRenderer) { 38 case 0: 39 return mDefaultRenderer.getCacheHeight() * mDefaultRenderer.getCacheWidth(); 40 case 1: 41 return mBlackGammaRenderer.getCacheHeight() * mBlackGammaRenderer.getCacheWidth(); 42 case 2: 43 return mWhiteGammaRenderer.getCacheHeight() * mWhiteGammaRenderer.getCacheWidth(); 44 } 45 return 0; 46 } 47 48private: 49 FontRenderer mDefaultRenderer; 50 FontRenderer mBlackGammaRenderer; 51 FontRenderer mWhiteGammaRenderer; 52 53 int mBlackThreshold; 54 int mWhiteThreshold; 55 56 uint8_t mDefault[256]; 57 uint8_t mBlackGamma[256]; 58 uint8_t mWhiteGamma[256]; 59}; 60 61}; // namespace uirenderer 62}; // namespace android 63 64#endif // ANDROID_HWUI_GAMMA_FONT_RENDERER_H 65