Transform.h revision 41b6aabf356d8a505da37b1d046bc9010028fe8b
1edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project/* 2edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * Copyright (C) 2007 The Android Open Source Project 3edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * 4edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 5edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * you may not use this file except in compliance with the License. 6edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * You may obtain a copy of the License at 7edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * 8edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 9edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * 10edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 11edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 12edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * See the License for the specific language governing permissions and 14edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * limitations under the License. 15edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project */ 16edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 17edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#ifndef ANDROID_TRANSFORM_H 18edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#define ANDROID_TRANSFORM_H 19edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 20edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#include <stdint.h> 21edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#include <sys/types.h> 22edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 23edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#include <ui/Point.h> 24edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#include <ui/Rect.h> 25edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 260694d0f3b3d016b9eedda13c447e8e7735a4a177Mathias Agopian#include <hardware/hardware.h> 270694d0f3b3d016b9eedda13c447e8e7735a4a177Mathias Agopian 28edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectnamespace android { 29edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 30edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectclass Region; 31edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 32edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project// --------------------------------------------------------------------------- 33edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 34edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectclass Transform 35edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 36edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectpublic: 37edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project Transform(); 38edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project Transform(const Transform& other); 39eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian explicit Transform(uint32_t orientation); 40edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project ~Transform(); 41edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 42edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project enum orientation_flags { 43edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project ROT_0 = 0x00000000, 440694d0f3b3d016b9eedda13c447e8e7735a4a177Mathias Agopian FLIP_H = HAL_TRANSFORM_FLIP_H, 450694d0f3b3d016b9eedda13c447e8e7735a4a177Mathias Agopian FLIP_V = HAL_TRANSFORM_FLIP_V, 460694d0f3b3d016b9eedda13c447e8e7735a4a177Mathias Agopian ROT_90 = HAL_TRANSFORM_ROT_90, 47edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project ROT_180 = FLIP_H|FLIP_V, 48edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project ROT_270 = ROT_180|ROT_90, 49eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian ROT_INVALID = 0x80 50edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project }; 51edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 52a2fe0a234bd6823f868742a3c137acb8875e1b03Mathias Agopian enum type_mask { 53a2fe0a234bd6823f868742a3c137acb8875e1b03Mathias Agopian IDENTITY = 0, 54a2fe0a234bd6823f868742a3c137acb8875e1b03Mathias Agopian TRANSLATE = 0x1, 55eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian ROTATE = 0x2, 56eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian SCALE = 0x4, 57eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian UNKNOWN = 0x8 58a2fe0a234bd6823f868742a3c137acb8875e1b03Mathias Agopian }; 59a2fe0a234bd6823f868742a3c137acb8875e1b03Mathias Agopian 60eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian // query the transform 61eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian bool transformed() const; 62eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian bool preserveRects() const; 63eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian uint32_t getType() const; 64eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian uint32_t getOrientation() const; 65eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian 66eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian float const* operator [] (int i) const; // returns column i 6741b6aabf356d8a505da37b1d046bc9010028fe8bMathias Agopian float tx() const; 6841b6aabf356d8a505da37b1d046bc9010028fe8bMathias Agopian float ty() const; 69eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian 70eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian // modify the transform 71d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian void reset(); 72d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian void set(float tx, float ty); 73d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian void set(float a, float b, float c, float d); 74d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian status_t set(uint32_t flags, float w, float h); 75eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian 76eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian // transform data 77edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project Rect makeBounds(int w, int h) const; 7878fd5010a87425d2be401d10a306dd68638fc1ddMathias Agopian void transform(float* point, int x, int y) const; 79edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project Region transform(const Region& reg) const; 80edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project Transform operator * (const Transform& rhs) const; 81edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 82d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian // for debugging 83d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian void dump(const char* name) const; 84d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian 85edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectprivate: 86eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian struct vec3 { 87eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian float v[3]; 88eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian inline vec3() { } 89eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian inline vec3(float a, float b, float c) { 90eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian v[0] = a; v[1] = b; v[2] = c; 91eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian } 92eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian inline float operator [] (int i) const { return v[i]; } 93eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian inline float& operator [] (int i) { return v[i]; } 94eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian }; 95eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian struct vec2 { 96eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian float v[2]; 97eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian inline vec2() { } 98eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian inline vec2(float a, float b) { 99eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian v[0] = a; v[1] = b; 100eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian } 101eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian inline float operator [] (int i) const { return v[i]; } 102eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian inline float& operator [] (int i) { return v[i]; } 103eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian }; 104eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian struct mat33 { 105eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian vec3 v[3]; 106eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian inline const vec3& operator [] (int i) const { return v[i]; } 107eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian inline vec3& operator [] (int i) { return v[i]; } 108eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian }; 109eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian 110eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian enum { UNKNOWN_TYPE = 0x80000000 }; 111eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian 112eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian // assumes the last row is < 0 , 0 , 1 > 113eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian vec2 transform(const vec2& v) const; 114eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian vec3 transform(const vec3& v) const; 115eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian Rect transform(const Rect& bounds) const; 116eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian uint32_t type() const; 117eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian static bool absIsOne(float f); 118eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian static bool isZero(float f); 119eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian 120eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian mat33 mMatrix; 121eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian mutable uint32_t mType; 122edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project}; 123edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 124edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project// --------------------------------------------------------------------------- 125edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project}; // namespace android 126edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 127edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#endif /* ANDROID_TRANSFORM_H */ 128