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_IOS)
  18 #include <CoreGraphics/CoreGraphics.h>
  19 #elif defined(OS_MACOSX)
  20 #include <ApplicationServices/ApplicationServices.h>
  21 #endif
  22
  23 namespace gfx {
  24
  25 // A size has width and height values.
  26 class GFX_EXPORT Size {
  27  public:
  28   Size() : width_(0), height_(0) {}
  29   Size(int width, int height)
  30       : width_(width < 0 ? 0 : width), height_(height < 0 ? 0 : height) {}
  31 #if defined(OS_MACOSX)
  32   explicit Size(const CGSize& s)
  33       : width_(s.width < 0 ? 0 : s.width),
  34         height_(s.height < 0 ? 0 : s.height) {}
  35 #endif
  36
  37   ~Size() {}
  38
  39 #if defined(OS_MACOSX)
  40   Size& operator=(const CGSize& s);
  41 #endif
  42
  43 #if defined(OS_WIN)
  44   SIZE ToSIZE() const;
  45 #elif defined(OS_MACOSX)
  46   CGSize ToCGSize() const { return CGSizeMake(width(), height()); }
  47 #endif
  48
  49   int width() const { return width_; }
  50   int height() const { return height_; }
  51
  52   void set_width(int width) { width_ = width < 0 ? 0 : width; }
  53   void set_height(int height) { height_ = height < 0 ? 0 : height; }
  54
  55   int GetArea() const;
  56
  57   void SetSize(int width, int height) {
  58     set_width(width);
  59     set_height(height);
  60   }
  61
  62   void Enlarge(int grow_width, int grow_height);
  63
  64   void SetToMin(const Size& other);
  65   void SetToMax(const Size& other);
  66
  67   bool IsEmpty() const { return !width() || !height(); }
  68
  69   operator SizeF() const {
  70     return SizeF(static_cast<float>(width()), static_cast<float>(height()));
  71   }
  72
  73   std::string ToString() const;
  74
  75  private:
  76   int width_;
  77   int height_;
  78 };
  79
  80 inline bool operator==(const Size& lhs, const Size& rhs) {
  81   return lhs.width() == rhs.width() && lhs.height() == rhs.height();
  82 }
  83
  84 inline bool operator!=(const Size& lhs, const Size& rhs) {
  85   return !(lhs == rhs);
  86 }
  87
  88 // This is declared here for use in gtest-based unit tests but is defined in
  89 // the gfx_test_support target. Depend on that to use this in your unit test.
  90 // This should not be used in production code - call ToString() instead.
  91 void PrintTo(const Size& size, ::std::ostream* os);
  92
  93 }  // namespace gfx
  94
  95 #endif  // UI_GFX_GEOMETRY_SIZE_H_