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/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_UI_PATCH_H
#define ANDROID_UI_PATCH_H
#include <sys/types.h>
#include <SkBitmap.h>
#include "Vertex.h"
namespace android {
namespace uirenderer {
/**
* Description of a patch.
*/
struct PatchDescription {
PatchDescription(): xCount(0), yCount(0) { }
PatchDescription(const uint32_t xCount, const uint32_t yCount):
xCount(xCount), yCount(yCount) { }
PatchDescription(const PatchDescription& description):
xCount(description.xCount), yCount(description.yCount) { }
uint32_t xCount;
uint32_t yCount;
bool operator<(const PatchDescription& rhs) const {
if (xCount == rhs.xCount) {
return yCount < rhs.yCount;
}
return xCount < rhs.xCount;
}
bool operator==(const PatchDescription& rhs) const {
return xCount == rhs.xCount && yCount == rhs.yCount;
}
}; // struct PatchDescription
/**
* An OpenGL patch. This contains an array of vertices and an array of
* indices to render the vertices.
*/
struct Patch {
Patch(const uint32_t xCount, const uint32_t yCount);
~Patch();
void updateVertices(const SkBitmap* bitmap, float left, float top, float right, float bottom,
const int32_t* xDivs, const int32_t* yDivs,
const uint32_t width, const uint32_t height);
void dump();
uint32_t xCount;
uint32_t yCount;
uint16_t* indices;
uint32_t indicesCount;
TextureVertex* vertices;
uint32_t verticesCount;
private:
static inline void generateVertices(TextureVertex* vertex, float y, float v,
const int32_t xDivs[], uint32_t xCount, float xStretch, float xStretchTex,
float width, float widthTex);
}; // struct Patch
}; // namespace uirenderer
}; // namespace android
#endif // ANDROID_UI_PATCH_H
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