Rect.cpp revision 9147d11a5f1d50496908bb1f49996e3ad23e19cc
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 17edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#include <ui/Rect.h> 18edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 19edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectnamespace android { 20edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 219147d11a5f1d50496908bb1f49996e3ad23e19ccDianne Hackbornstatic inline int32_t min(int32_t a, int32_t b) { 22edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return (a<b) ? a : b; 23edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 24edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 259147d11a5f1d50496908bb1f49996e3ad23e19ccDianne Hackbornstatic inline int32_t max(int32_t a, int32_t b) { 26edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return (a>b) ? a : b; 27edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 28edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 29edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectvoid Rect::makeInvalid() { 30edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project left = 0; 31edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project top = 0; 32edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project right = -1; 33edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project bottom = -1; 34edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 35edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 36edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectbool Rect::operator < (const Rect& rhs) const 37edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 38edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 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) { 44edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (bottom<rhs.bottom) { 45edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return true; 46edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } else if (bottom == rhs.bottom) { 47edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 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 569147d11a5f1d50496908bb1f49996e3ad23e19ccDianne HackbornRect& Rect::offsetTo(int32_t x, int32_t y) 57edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 58edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project right -= left - x; 59edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project bottom -= top - y; 60edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project left = x; 61edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project top = y; 62edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return *this; 63edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 64edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 659147d11a5f1d50496908bb1f49996e3ad23e19ccDianne HackbornRect& Rect::offsetBy(int32_t x, int32_t y) 66edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 67edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project left += x; 68edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project top += y; 69edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project right+= x; 70edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project bottom+=y; 71edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return *this; 72edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 73edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 7435801cea5f301c0e1d7a93b15a8f73f98e6b1033Mathias Agopianconst Rect Rect::operator + (const Point& rhs) const 75edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 7635801cea5f301c0e1d7a93b15a8f73f98e6b1033Mathias Agopian const Rect result(left+rhs.x, top+rhs.y, right+rhs.x, bottom+rhs.y); 7735801cea5f301c0e1d7a93b15a8f73f98e6b1033Mathias Agopian return result; 78edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 79edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 8035801cea5f301c0e1d7a93b15a8f73f98e6b1033Mathias Agopianconst Rect Rect::operator - (const Point& rhs) const 81edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 8235801cea5f301c0e1d7a93b15a8f73f98e6b1033Mathias Agopian const Rect result(left-rhs.x, top-rhs.y, right-rhs.x, bottom-rhs.y); 8335801cea5f301c0e1d7a93b15a8f73f98e6b1033Mathias Agopian return result; 84edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 85edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 86edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectbool Rect::intersect(const Rect& with, Rect* result) const 87edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 88edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project result->left = max(left, with.left); 89edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project result->top = max(top, with.top); 90edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project result->right = min(right, with.right); 91edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project result->bottom = min(bottom, with.bottom); 92edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return !(result->isEmpty()); 93edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 94edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 95edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project}; // namespace android 96