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