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