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      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 "FontRenderer.h"
     21 #include "Program.h"
     22 
     23 #include <SkPaint.h>
     24 
     25 #include <utils/String8.h>
     26 
     27 namespace android {
     28 namespace uirenderer {
     29 
     30 class GammaFontRenderer {
     31 public:
     32     GammaFontRenderer();
     33 
     34     void clear() {
     35         mRenderer.reset(nullptr);
     36     }
     37 
     38     void flush() {
     39         if (mRenderer) {
     40             mRenderer->flushLargeCaches();
     41         }
     42     }
     43 
     44     FontRenderer& getFontRenderer() {
     45         if (!mRenderer) {
     46             mRenderer.reset(new FontRenderer(&mGammaTable[0]));
     47         }
     48         return *mRenderer;
     49     }
     50 
     51     void dumpMemoryUsage(String8& log) const {
     52         if (mRenderer) {
     53             mRenderer->dumpMemoryUsage(log);
     54         } else {
     55             log.appendFormat("FontRenderer doesn't exist.\n");
     56         }
     57     }
     58 
     59     uint32_t getSize() const {
     60         return mRenderer ? mRenderer->getSize() : 0;
     61     }
     62 
     63     void endPrecaching();
     64 
     65 private:
     66     std::unique_ptr<FontRenderer> mRenderer;
     67     uint8_t mGammaTable[256];
     68 };
     69 
     70 }; // namespace uirenderer
     71 }; // namespace android
     72 
     73 #endif // ANDROID_HWUI_GAMMA_FONT_RENDERER_H
     74