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 namespace android {
26 namespace uirenderer {
27 
28 class GammaFontRenderer {
29 public:
30     GammaFontRenderer();
31 
clear()32     void clear() {
33         mRenderer.reset(nullptr);
34     }
35 
flush()36     void flush() {
37         if (mRenderer) {
38             mRenderer->flushLargeCaches();
39         }
40     }
41 
getFontRenderer()42     FontRenderer& getFontRenderer() {
43         if (!mRenderer) {
44             mRenderer.reset(new FontRenderer(&mGammaTable[0]));
45         }
46         return *mRenderer;
47     }
48 
getFontRendererSize(GLenum format)49     uint32_t getFontRendererSize(GLenum format) const {
50         return mRenderer ? mRenderer->getCacheSize(format) : 0;
51     }
52 
53     void endPrecaching();
54 
55 private:
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