1 /* 2 * Copyright (C) 2007 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_TRANSFORM_H 18 #define ANDROID_TRANSFORM_H 19 20 #include <stdint.h> 21 #include <sys/types.h> 22 23 #include <ui/Point.h> 24 #include <ui/Rect.h> 25 26 #include <GLES/gl.h> 27 28 #include <core/SkMatrix.h> 29 30 namespace android { 31 32 class Region; 33 34 // --------------------------------------------------------------------------- 35 36 class Transform 37 { 38 public: 39 Transform(); 40 Transform(const Transform& other); 41 ~Transform(); 42 43 enum orientation_flags { 44 ROT_0 = 0x00000000, 45 FLIP_H = 0x00000001, 46 FLIP_V = 0x00000002, 47 ROT_90 = 0x00000004, 48 ROT_180 = FLIP_H|FLIP_V, 49 ROT_270 = ROT_180|ROT_90, 50 ROT_INVALID = 0x80000000 51 }; 52 53 enum type_mask { 54 IDENTITY = 0, 55 TRANSLATE = 0x1, 56 SCALE = 0x2, 57 AFFINE = 0x4, 58 PERSPECTIVE = 0x8 59 }; 60 61 bool transformed() const; 62 int32_t getOrientation() const; 63 bool preserveRects() const; 64 65 int tx() const; 66 int ty() const; 67 68 void reset(); 69 void set(float xx, float xy, float yx, float yy); 70 void set(int tx, int ty); 71 void set(float radian, float x, float y); 72 void scale(float s, float x, float y); 73 74 Rect makeBounds(int w, int h) const; 75 void transform(GLfixed* point, int x, int y) const; 76 Region transform(const Region& reg) const; 77 Rect transform(const Rect& bounds) const; 78 79 Transform operator * (const Transform& rhs) const; 80 float operator [] (int i) const; 81 getType()82 inline uint32_t getType() const { return type(); } 83 Transform(bool)84 inline Transform(bool) : mType(0xFF) { }; 85 86 private: 87 uint8_t type() const; 88 89 private: 90 SkMatrix mTransform; 91 mutable uint32_t mType; 92 }; 93 94 // --------------------------------------------------------------------------- 95 }; // namespace android 96 97 #endif /* ANDROID_TRANSFORM_H */ 98