Patch.h revision e84a208317e0ed388fcdad1e6743c7849acb51b0 
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_PATCH_H
18#define ANDROID_HWUI_PATCH_H
19
20#include <sys/types.h>
21
22#include <GLES2/gl2.h>
23
24#include <utils/Vector.h>
25
26#include <androidfw/ResourceTypes.h>
27
28#include "Rect.h"
29#include "UvMapper.h"
30
31namespace android {
32namespace uirenderer {
33
34struct TextureVertex;
35
36///////////////////////////////////////////////////////////////////////////////
37// 9-patch structures
38///////////////////////////////////////////////////////////////////////////////
39
40class Patch {
41public:
42    Patch();
43    ~Patch();
44
45    /**
46     * Returns the size of this patch's mesh in bytes.
47     */
48    uint32_t getSize() const;
49
50    TextureVertex* vertices;
51    uint32_t verticesCount;
52    uint32_t indexCount;
53    bool hasEmptyQuads;
54    Vector<Rect> quads;
55
56    GLintptr offset;
57    GLintptr textureOffset;
58
59    TextureVertex* createMesh(const float bitmapWidth, const float bitmapHeight,
60            float width, float height, const Res_png_9patch* patch);
61    TextureVertex* createMesh(const float bitmapWidth, const float bitmapHeight,
62            float width, float height, const UvMapper& mapper, const Res_png_9patch* patch);
63
64private:
65    void generateRow(const int32_t* xDivs, uint32_t xCount, TextureVertex*& vertex,
66            float y1, float y2, float v1, float v2, float stretchX, float rescaleX,
67            float width, float bitmapWidth, uint32_t& quadCount);
68    void generateQuad(TextureVertex*& vertex, float x1, float y1, float x2, float y2,
69            float u1, float v1, float u2, float v2, uint32_t& quadCount);
70
71    const uint32_t* mColors;
72    UvMapper mUvMapper;
73}; // struct Patch
74
75}; // namespace uirenderer
76}; // namespace android
77
78#endif // ANDROID_HWUI_PATCH_H
79