8683fca395
this change introduces a new class LightFlattenable<> which is a protocol to flatten simple objects that don't require binders or file descriptors; the benefit of this protocol is that it doesn't require the objects to have a virtual table and give us a consitant way of doing this. we also introduce an implementation of this protocol for POD structures, LightFlattenablePod<>. Parcel has been update to handle this protocol automatically. Sensor, Rect, Point and Region now use this new protocol. Change-Id: Icb3ce7fa1d785249eb666f39c2129f2fc143ea4a
89 lines
2.2 KiB
C++
89 lines
2.2 KiB
C++
/*
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* Copyright (C) 2006 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_UI_POINT
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#define ANDROID_UI_POINT
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#include <utils/Flattenable.h>
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#include <utils/TypeHelpers.h>
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namespace android {
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class Point : public LightFlattenablePod<Point>
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{
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public:
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int x;
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int y;
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// we don't provide copy-ctor and operator= on purpose
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// because we want the compiler generated versions
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// Default constructor doesn't initialize the Point
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inline Point() {
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}
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inline Point(int x, int y) : x(x), y(y) {
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}
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inline bool operator == (const Point& rhs) const {
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return (x == rhs.x) && (y == rhs.y);
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}
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inline bool operator != (const Point& rhs) const {
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return !operator == (rhs);
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}
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inline bool isOrigin() const {
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return !(x|y);
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}
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// operator < defines an order which allows to use points in sorted
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// vectors.
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bool operator < (const Point& rhs) const {
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return y<rhs.y || (y==rhs.y && x<rhs.x);
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}
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inline Point& operator - () {
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x = -x;
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y = -y;
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return *this;
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}
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inline Point& operator += (const Point& rhs) {
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x += rhs.x;
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y += rhs.y;
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return *this;
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}
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inline Point& operator -= (const Point& rhs) {
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x -= rhs.x;
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y -= rhs.y;
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return *this;
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}
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const Point operator + (const Point& rhs) const {
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const Point result(x+rhs.x, y+rhs.y);
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return result;
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}
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const Point operator - (const Point& rhs) const {
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const Point result(x-rhs.x, y-rhs.y);
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return result;
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}
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};
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ANDROID_BASIC_TYPES_TRAITS(Point)
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}; // namespace android
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#endif // ANDROID_UI_POINT
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