GammaFontRenderer.h revision f636e63c44fb9d9a299908f1d88da8e0a02d019c 
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
25namespace android {
26namespace uirenderer {
27
28class GammaFontRenderer {
29public:
30    GammaFontRenderer();
31
32    void clear() {
33        mRenderer.reset(nullptr);
34    }
35
36    void flush() {
37        if (mRenderer) {
38            mRenderer->flushLargeCaches();
39        }
40    }
41
42    FontRenderer& getFontRenderer() {
43        if (!mRenderer) {
44            mRenderer.reset(new FontRenderer(&mGammaTable[0]));
45        }
46        return *mRenderer;
47    }
48
49    uint32_t getFontRendererSize(GLenum format) const {
50        return mRenderer ? mRenderer->getCacheSize(format) : 0;
51    }
52
53    void endPrecaching();
54
55private:
56    std::unique_ptr<FontRenderer> mRenderer;
57    uint8_t mGammaTable[256];
58};
59
60}; // namespace uirenderer
61}; // namespace android
62
63#endif // ANDROID_HWUI_GAMMA_FONT_RENDERER_H
64