blob: 54c208ef52d77201d981e10c1d733ac5716c4f65 [file] [log] [blame]
/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_HWUI_GAMMA_FONT_RENDERER_H
#define ANDROID_HWUI_GAMMA_FONT_RENDERER_H
#include <SkPaint.h>
#include "FontRenderer.h"
namespace android {
namespace uirenderer {
struct GammaFontRenderer {
GammaFontRenderer();
~GammaFontRenderer();
enum Gamma {
kGammaDefault = 0,
kGammaBlack = 1,
kGammaWhite = 2,
kGammaCount = 3
};
void clear();
void flush();
FontRenderer& getFontRenderer(const SkPaint* paint);
uint32_t getFontRendererCount() const {
return kGammaCount;
}
uint32_t getFontRendererSize(uint32_t fontRenderer) const {
if (fontRenderer >= kGammaCount) return 0;
FontRenderer* renderer = mRenderers[fontRenderer];
if (!renderer) return 0;
return renderer->getCacheHeight() * renderer->getCacheWidth();
}
private:
FontRenderer* getRenderer(Gamma gamma);
uint32_t mRenderersUsageCount[kGammaCount];
FontRenderer* mRenderers[kGammaCount];
int mBlackThreshold;
int mWhiteThreshold;
uint8_t mGammaTable[256 * kGammaCount];
};
}; // namespace uirenderer
}; // namespace android
#endif // ANDROID_HWUI_GAMMA_FONT_RENDERER_H