michael@0: /*
michael@0:  * Copyright (C) 2006 The Android Open Source Project
michael@0:  *
michael@0:  * Licensed under the Apache License, Version 2.0 (the "License");
michael@0:  * you may not use this file except in compliance with the License.
michael@0:  * You may obtain a copy of the License at
michael@0:  *
michael@0:  *      http://www.apache.org/licenses/LICENSE-2.0
michael@0:  *
michael@0:  * Unless required by applicable law or agreed to in writing, software
michael@0:  * distributed under the License is distributed on an "AS IS" BASIS,
michael@0:  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
michael@0:  * See the License for the specific language governing permissions and
michael@0:  * limitations under the License.
michael@0:  */
michael@0: 
michael@0: #ifndef ANDROID_UI_POINT
michael@0: #define ANDROID_UI_POINT
michael@0: 
michael@0: #include <utils/TypeHelpers.h>
michael@0: 
michael@0: namespace android {
michael@0: 
michael@0: class Point
michael@0: {
michael@0: public:
michael@0:     int x;
michael@0:     int y;
michael@0: 
michael@0:     // we don't provide copy-ctor and operator= on purpose
michael@0:     // because we want the compiler generated versions
michael@0: 
michael@0:     // Default constructor doesn't initialize the Point
michael@0:     inline Point() {
michael@0:     }
michael@0:     inline Point(int x, int y) : x(x), y(y) {
michael@0:     }
michael@0: 
michael@0:     inline bool operator == (const Point& rhs) const {
michael@0:         return (x == rhs.x) && (y == rhs.y);
michael@0:     }
michael@0:     inline bool operator != (const Point& rhs) const {
michael@0:         return !operator == (rhs);
michael@0:     }
michael@0: 
michael@0:     inline bool isOrigin() const {
michael@0:         return !(x|y);
michael@0:     }
michael@0: 
michael@0:     // operator < defines an order which allows to use points in sorted
michael@0:     // vectors.
michael@0:     bool operator < (const Point& rhs) const {
michael@0:         return y<rhs.y || (y==rhs.y && x<rhs.x);
michael@0:     }
michael@0: 
michael@0:     inline Point& operator - () {
michael@0:         x = -x;
michael@0:         y = -y;
michael@0:         return *this;
michael@0:     }
michael@0:     
michael@0:     inline Point& operator += (const Point& rhs) {
michael@0:         x += rhs.x;
michael@0:         y += rhs.y;
michael@0:         return *this;
michael@0:     }
michael@0:     inline Point& operator -= (const Point& rhs) {
michael@0:         x -= rhs.x;
michael@0:         y -= rhs.y;
michael@0:         return *this;
michael@0:     }
michael@0:     
michael@0:     const Point operator + (const Point& rhs) const {
michael@0:         const Point result(x+rhs.x, y+rhs.y);
michael@0:         return result;
michael@0:     }
michael@0:     const Point operator - (const Point& rhs) const {
michael@0:         const Point result(x-rhs.x, y-rhs.y);
michael@0:         return result;
michael@0:     }    
michael@0: };
michael@0: 
michael@0: ANDROID_BASIC_TYPES_TRAITS(Point)
michael@0: 
michael@0: }; // namespace android
michael@0: 
michael@0: #endif // ANDROID_UI_POINT