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/*
* Copyright (C) 2007 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_TRANSFORM_H
#define ANDROID_TRANSFORM_H
#include <stdint.h>
#include <sys/types.h>
#include <ui/Point.h>
#include <ui/Rect.h>
#include <GLES/gl.h>
#include <core/SkMatrix.h>
namespace android {
class Region;
// ---------------------------------------------------------------------------
class Transform
{
public:
Transform();
Transform(const Transform& other);
Transform(int32_t flags);
~Transform();
enum orientation_flags {
ROT_0 = 0x00000000,
FLIP_H = 0x00000001,
FLIP_V = 0x00000002,
ROT_90 = 0x00000004,
ROT_180 = FLIP_H|FLIP_V,
ROT_270 = ROT_180|ROT_90,
ROT_INVALID = 0x80000000
};
enum type_mask {
IDENTITY = 0,
TRANSLATE = 0x1,
SCALE = 0x2,
AFFINE = 0x4,
PERSPECTIVE = 0x8
};
bool transformed() const;
int32_t getOrientation() const;
bool preserveRects() const;
int tx() const;
int ty() const;
void reset();
void set(float xx, float xy, float yx, float yy);
void set(int tx, int ty);
void set(float radian, float x, float y);
void scale(float s, float x, float y);
Rect makeBounds(int w, int h) const;
void transform(GLfixed* point, int x, int y) const;
Region transform(const Region& reg) const;
Rect transform(const Rect& bounds) const;
Transform operator * (const Transform& rhs) const;
float operator [] (int i) const;
inline uint32_t getType() const { return type(); }
inline Transform(bool) : mType(0xFF) { };
private:
uint8_t type() const;
private:
SkMatrix mTransform;
mutable uint32_t mType;
};
// ---------------------------------------------------------------------------
}; // namespace android
#endif /* ANDROID_TRANSFORM_H */
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