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