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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_GFX_GEOMETRY_SIZE_H_
#define UI_GFX_GEOMETRY_SIZE_H_
#include <algorithm>
#include <iosfwd>
#include <string>
#include "base/component_export.h"
#include "base/numerics/safe_math.h"
#include "build/build_config.h"
#if BUILDFLAG(IS_WIN)
typedef struct tagSIZE SIZE;
#elif BUILDFLAG(IS_APPLE)
typedef struct CGSize CGSize;
#endif
namespace gfx {
// A size has width and height values.
class COMPONENT_EXPORT(GEOMETRY) Size {
public:
constexpr Size() : width_(0), height_(0) {}
constexpr Size(int width, int height)
: width_(std::max(0, width)), height_(std::max(0, height)) {}
#if BUILDFLAG(IS_APPLE)
explicit Size(const CGSize& s);
#endif
void operator+=(const Size& size);
void operator-=(const Size& size);
#if BUILDFLAG(IS_WIN)
SIZE ToSIZE() const;
#elif BUILDFLAG(IS_APPLE)
CGSize ToCGSize() const;
#endif
constexpr int width() const { return width_; }
constexpr int height() const { return height_; }
void set_width(int width) { width_ = std::max(0, width); }
void set_height(int height) { height_ = std::max(0, height); }
// This call will CHECK if the area of this size would overflow int.
int GetArea() const;
// Returns a checked numeric representation of the area.
base::CheckedNumeric<int> GetCheckedArea() const;
uint64_t Area64() const {
return static_cast<uint64_t>(width_) * static_cast<uint64_t>(height_);
}
void SetSize(int width, int height) {
set_width(width);
set_height(height);
}
void Enlarge(int grow_width, int grow_height);
void SetToMin(const Size& other);
void SetToMax(const Size& other);
bool IsEmpty() const { return !width() || !height(); }
bool IsZero() const { return !width() && !height(); }
void Transpose() {
using std::swap;
swap(width_, height_);
}
std::string ToString() const;
friend bool operator==(const Size&, const Size&) = default;
private:
int width_;
int height_;
};
inline Size operator+(Size lhs, const Size& rhs) {
lhs += rhs;
return lhs;
}
inline Size operator-(Size lhs, const Size& rhs) {
lhs -= rhs;
return lhs;
}
// This is declared here for use in gtest-based unit tests but is defined in
// the //ui/gfx:test_support target. Depend on that to use this in your unit
// test. This should not be used in production code - call ToString() instead.
void PrintTo(const Size& size, ::std::ostream* os);
// Helper methods to scale a gfx::Size to a new gfx::Size.
COMPONENT_EXPORT(GEOMETRY)
Size ScaleToCeiledSize(const Size& size, float x_scale, float y_scale);
COMPONENT_EXPORT(GEOMETRY)
Size ScaleToCeiledSize(const Size& size, float scale);
COMPONENT_EXPORT(GEOMETRY)
Size ScaleToFlooredSize(const Size& size, float x_scale, float y_scale);
COMPONENT_EXPORT(GEOMETRY)
Size ScaleToFlooredSize(const Size& size, float scale);
COMPONENT_EXPORT(GEOMETRY)
Size ScaleToRoundedSize(const Size& size, float x_scale, float y_scale);
COMPONENT_EXPORT(GEOMETRY)
Size ScaleToRoundedSize(const Size& size, float scale);
inline Size TransposeSize(const Size& s) {
return Size(s.height(), s.width());
}
} // namespace gfx
#endif // UI_GFX_GEOMETRY_SIZE_H_
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