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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_GFX_SIZE_BASE_H_
#define UI_GFX_SIZE_BASE_H_
#include "ui/base/ui_export.h"
namespace gfx {
// A size has width and height values.
template<typename Class, typename Type>
class UI_EXPORT SizeBase {
public:
Type width() const { return width_; }
Type height() const { return height_; }
Type GetArea() const { return width_ * height_; }
void SetSize(Type width, Type height) {
set_width(width);
set_height(height);
}
void Enlarge(Type width, Type height) {
set_width(width_ + width);
set_height(height_ + height);
}
void set_width(Type width) {
width_ = width < 0 ? 0 : width;
}
void set_height(Type height) {
height_ = height < 0 ? 0 : height;
}
void ClampToMax(const Class& max) {
width_ = width_ <= max.width_ ? width_ : max.width_;
height_ = height_ <= max.height_ ? height_ : max.height_;
}
void ClampToMin(const Class& min) {
width_ = width_ >= min.width_ ? width_ : min.width_;
height_ = height_ >= min.height_ ? height_ : min.height_;
}
bool IsEmpty() const {
return (width_ == 0) || (height_ == 0);
}
protected:
SizeBase(Type width, Type height)
: width_(width < 0 ? 0 : width),
height_(height < 0 ? 0 : height) {
}
// Destructor is intentionally made non virtual and protected.
// Do not make this public.
~SizeBase() {}
private:
Type width_;
Type height_;
};
} // namespace gfx
#endif // UI_GFX_SIZE_BASE_H_
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