Rect.cpp revision 6c7f25afb75ac155bad0b3bc17c0089d0337d060
1edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project/* 235801cea5f301c0e1d7a93b15a8f73f98e6b1033Mathias Agopian * Copyright (C) 2009 The Android Open Source Project 3edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * 435801cea5f301c0e1d7a93b15a8f73f98e6b1033Mathias Agopian * Licensed under the Apache License, Version 2.0 (the "License"); 535801cea5f301c0e1d7a93b15a8f73f98e6b1033Mathias Agopian * you may not use this file except in compliance with the License. 635801cea5f301c0e1d7a93b15a8f73f98e6b1033Mathias Agopian * You may obtain a copy of the License at 7edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * 835801cea5f301c0e1d7a93b15a8f73f98e6b1033Mathias Agopian * http://www.apache.org/licenses/LICENSE-2.0 935801cea5f301c0e1d7a93b15a8f73f98e6b1033Mathias Agopian * 1035801cea5f301c0e1d7a93b15a8f73f98e6b1033Mathias Agopian * Unless required by applicable law or agreed to in writing, software 1135801cea5f301c0e1d7a93b15a8f73f98e6b1033Mathias Agopian * distributed under the License is distributed on an "AS IS" BASIS, 1235801cea5f301c0e1d7a93b15a8f73f98e6b1033Mathias Agopian * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1335801cea5f301c0e1d7a93b15a8f73f98e6b1033Mathias Agopian * See the License for the specific language governing permissions and 1435801cea5f301c0e1d7a93b15a8f73f98e6b1033Mathias Agopian * limitations under the License. 15edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project */ 16edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 1759332804306c054082a39e9b004146bd03ae1d30Jamie Gennis#include <system/graphics.h> 18edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#include <ui/Rect.h> 19edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 20edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectnamespace android { 21edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 229147d11a5f1d50496908bb1f49996e3ad23e19ccDianne Hackbornstatic inline int32_t min(int32_t a, int32_t b) { 236c7f25afb75ac155bad0b3bc17c0089d0337d060Mathias Agopian return (a < b) ? a : b; 24edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 25edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 269147d11a5f1d50496908bb1f49996e3ad23e19ccDianne Hackbornstatic inline int32_t max(int32_t a, int32_t b) { 276c7f25afb75ac155bad0b3bc17c0089d0337d060Mathias Agopian return (a > b) ? a : b; 28edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 29edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 30edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectvoid Rect::makeInvalid() { 31edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project left = 0; 32edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project top = 0; 33edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project right = -1; 34edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project bottom = -1; 35edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 36edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 376c7f25afb75ac155bad0b3bc17c0089d0337d060Mathias Agopianbool Rect::operator <(const Rect& rhs) const { 386c7f25afb75ac155bad0b3bc17c0089d0337d060Mathias Agopian if (top < rhs.top) { 39edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return true; 40edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } else if (top == rhs.top) { 41edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (left < rhs.left) { 42edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return true; 43edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } else if (left == rhs.left) { 446c7f25afb75ac155bad0b3bc17c0089d0337d060Mathias Agopian if (bottom < rhs.bottom) { 45edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return true; 46edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } else if (bottom == rhs.bottom) { 476c7f25afb75ac155bad0b3bc17c0089d0337d060Mathias Agopian if (right < rhs.right) { 48edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return true; 49edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 50edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 51edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 52edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 53edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return false; 54edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 55edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 566c7f25afb75ac155bad0b3bc17c0089d0337d060Mathias AgopianRect& Rect::offsetTo(int32_t x, int32_t y) { 57edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project right -= left - x; 58edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project bottom -= top - y; 59edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project left = x; 60edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project top = y; 61edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return *this; 62edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 63edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 646c7f25afb75ac155bad0b3bc17c0089d0337d060Mathias AgopianRect& Rect::offsetBy(int32_t x, int32_t y) { 65edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project left += x; 666c7f25afb75ac155bad0b3bc17c0089d0337d060Mathias Agopian top += y; 676c7f25afb75ac155bad0b3bc17c0089d0337d060Mathias Agopian right += x; 686c7f25afb75ac155bad0b3bc17c0089d0337d060Mathias Agopian bottom += y; 69edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return *this; 70edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 71edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 726c7f25afb75ac155bad0b3bc17c0089d0337d060Mathias Agopianconst Rect Rect::operator +(const Point& rhs) const { 736c7f25afb75ac155bad0b3bc17c0089d0337d060Mathias Agopian const Rect result(left + rhs.x, top + rhs.y, right + rhs.x, bottom + rhs.y); 7435801cea5f301c0e1d7a93b15a8f73f98e6b1033Mathias Agopian return result; 75edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 76edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 776c7f25afb75ac155bad0b3bc17c0089d0337d060Mathias Agopianconst Rect Rect::operator -(const Point& rhs) const { 786c7f25afb75ac155bad0b3bc17c0089d0337d060Mathias Agopian const Rect result(left - rhs.x, top - rhs.y, right - rhs.x, bottom - rhs.y); 7935801cea5f301c0e1d7a93b15a8f73f98e6b1033Mathias Agopian return result; 80edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 81edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 826c7f25afb75ac155bad0b3bc17c0089d0337d060Mathias Agopianbool Rect::intersect(const Rect& with, Rect* result) const { 836c7f25afb75ac155bad0b3bc17c0089d0337d060Mathias Agopian result->left = max(left, with.left); 846c7f25afb75ac155bad0b3bc17c0089d0337d060Mathias Agopian result->top = max(top, with.top); 856c7f25afb75ac155bad0b3bc17c0089d0337d060Mathias Agopian result->right = min(right, with.right); 866c7f25afb75ac155bad0b3bc17c0089d0337d060Mathias Agopian result->bottom = min(bottom, with.bottom); 87edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return !(result->isEmpty()); 88edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 89edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 90f15a83f5814219c167f87cb8aaea622fc8493499Jamie GennisRect Rect::transform(uint32_t xform, int32_t width, int32_t height) const { 9159332804306c054082a39e9b004146bd03ae1d30Jamie Gennis Rect result(*this); 9259332804306c054082a39e9b004146bd03ae1d30Jamie Gennis if (xform & HAL_TRANSFORM_FLIP_H) { 936c7f25afb75ac155bad0b3bc17c0089d0337d060Mathias Agopian result = Rect(width - result.right, result.top, width - result.left, 946c7f25afb75ac155bad0b3bc17c0089d0337d060Mathias Agopian result.bottom); 9559332804306c054082a39e9b004146bd03ae1d30Jamie Gennis } 9659332804306c054082a39e9b004146bd03ae1d30Jamie Gennis if (xform & HAL_TRANSFORM_FLIP_V) { 976c7f25afb75ac155bad0b3bc17c0089d0337d060Mathias Agopian result = Rect(result.left, height - result.bottom, result.right, 986c7f25afb75ac155bad0b3bc17c0089d0337d060Mathias Agopian height - result.top); 9959332804306c054082a39e9b004146bd03ae1d30Jamie Gennis } 10059332804306c054082a39e9b004146bd03ae1d30Jamie Gennis if (xform & HAL_TRANSFORM_ROT_90) { 10159332804306c054082a39e9b004146bd03ae1d30Jamie Gennis int left = height - result.bottom; 10259332804306c054082a39e9b004146bd03ae1d30Jamie Gennis int top = result.left; 10359332804306c054082a39e9b004146bd03ae1d30Jamie Gennis int right = height - result.top; 10459332804306c054082a39e9b004146bd03ae1d30Jamie Gennis int bottom = result.right; 10559332804306c054082a39e9b004146bd03ae1d30Jamie Gennis result = Rect(left, top, right, bottom); 10659332804306c054082a39e9b004146bd03ae1d30Jamie Gennis } 10759332804306c054082a39e9b004146bd03ae1d30Jamie Gennis return result; 10859332804306c054082a39e9b004146bd03ae1d30Jamie Gennis} 10959332804306c054082a39e9b004146bd03ae1d30Jamie Gennis 110edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project}; // namespace android 111