ui/gfx/geometry/size.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef UI_GFX_GEOMETRY_SIZE_H_
   6 #define UI_GFX_GEOMETRY_SIZE_H_
   7
   8 #include <iosfwd>
   9 #include <string>
  10
  11 #include "base/compiler_specific.h"
  12 #include "ui/gfx/geometry/size_f.h"
  13 #include "ui/gfx/gfx_export.h"
  14
  15 #if defined(OS_WIN)
  16 typedef struct tagSIZE SIZE;
  17 #elif defined(OS_MACOSX)
  18 typedef struct CGSize CGSize;
  19 #endif
  20
  21 namespace gfx {
  22
  23 // A size has width and height values.
  24 class GFX_EXPORT Size {
  25  public:
  26   Size() : width_(0), height_(0) {}
  27   Size(int width, int height)
  28       : width_(width < 0 ? 0 : width), height_(height < 0 ? 0 : height) {}
  29 #if defined(OS_MACOSX)
  30   explicit Size(const CGSize& s);
  31 #endif
  32
  33   ~Size() {}
  34
  35 #if defined(OS_MACOSX)
  36   Size& operator=(const CGSize& s);
  37 #endif
  38
  39 #if defined(OS_WIN)
  40   SIZE ToSIZE() const;
  41 #elif defined(OS_MACOSX)
  42   CGSize ToCGSize() const;
  43 #endif
  44
  45   int width() const { return width_; }
  46   int height() const { return height_; }
  47
  48   void set_width(int width) { width_ = width < 0 ? 0 : width; }
  49   void set_height(int height) { height_ = height < 0 ? 0 : height; }
  50
  51   int GetArea() const;
  52
  53   void SetSize(int width, int height) {
  54     set_width(width);
  55     set_height(height);
  56   }
  57
  58   void Enlarge(int grow_width, int grow_height);
  59
  60   void SetToMin(const Size& other);
  61   void SetToMax(const Size& other);
  62
  63   bool IsEmpty() const { return !width() || !height(); }
  64
  65   operator SizeF() const {
  66     return SizeF(static_cast<float>(width()), static_cast<float>(height()));
  67   }
  68
  69   std::string ToString() const;
  70
  71  private:
  72   int width_;
  73   int height_;
  74 };
  75
  76 inline bool operator==(const Size& lhs, const Size& rhs) {
  77   return lhs.width() == rhs.width() && lhs.height() == rhs.height();
  78 }
  79
  80 inline bool operator!=(const Size& lhs, const Size& rhs) {
  81   return !(lhs == rhs);
  82 }
  83
  84 // This is declared here for use in gtest-based unit tests but is defined in
  85 // the gfx_test_support target. Depend on that to use this in your unit test.
  86 // This should not be used in production code - call ToString() instead.
  87 void PrintTo(const Size& size, ::std::ostream* os);
  88
  89 }  // namespace gfx
  90
  91 #endif  // UI_GFX_GEOMETRY_SIZE_H_