Rect.cpp revision edbf3b6af777b721cd2a1ef461947e51e88241e1
1edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project/* 2edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * Rect.cpp 3edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * Android 4edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * 5edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * Created on 10/14/05. 6edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * Copyright 2005 The Android Open Source Project 7edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * 8edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project */ 9edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 10edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#include <ui/Rect.h> 11edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 12edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectnamespace android { 13edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 14edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectinline int min(int a, int b) { 15edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return (a<b) ? a : b; 16edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 17edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 18edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectinline int max(int a, int b) { 19edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return (a>b) ? a : b; 20edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 21edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 22edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectvoid Rect::makeInvalid() { 23edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project left = 0; 24edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project top = 0; 25edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project right = -1; 26edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project bottom = -1; 27edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 28edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 29edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectbool Rect::operator < (const Rect& rhs) const 30edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 31edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (top<rhs.top) { 32edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return true; 33edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } else if (top == rhs.top) { 34edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (left < rhs.left) { 35edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return true; 36edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } else if (left == rhs.left) { 37edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (bottom<rhs.bottom) { 38edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return true; 39edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } else if (bottom == rhs.bottom) { 40edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (right<rhs.right) { 41edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return true; 42edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 43edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 44edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 45edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 46edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return false; 47edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 48edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 49edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source ProjectRect& Rect::offsetTo(int x, int y) 50edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 51edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project right -= left - x; 52edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project bottom -= top - y; 53edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project left = x; 54edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project top = y; 55edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return *this; 56edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 57edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 58edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source ProjectRect& Rect::offsetBy(int x, int y) 59edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 60edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project left += x; 61edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project top += y; 62edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project right+= x; 63edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project bottom+=y; 64edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return *this; 65edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 66edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 67edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source ProjectRect Rect::operator + (const Point& rhs) const 68edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 69edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return Rect(left+rhs.x, top+rhs.y, right+rhs.x, bottom+rhs.y); 70edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 71edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 72edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source ProjectRect Rect::operator - (const Point& rhs) const 73edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 74edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return Rect(left-rhs.x, top-rhs.y, right-rhs.x, bottom-rhs.y); 75edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 76edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 77edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectbool Rect::intersect(const Rect& with, Rect* result) const 78edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 79edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project result->left = max(left, with.left); 80edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project result->top = max(top, with.top); 81edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project result->right = min(right, with.right); 82edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project result->bottom = min(bottom, with.bottom); 83edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return !(result->isEmpty()); 84edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 85edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 86edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project}; // namespace android 87