gfx/size.h

   1 // Copyright (c) 2010 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 GFX_SIZE_H_
   6 #define GFX_SIZE_H_
   7 #pragma once
   8
   9 #include "build/build_config.h"
  10
  11 #include <iosfwd>
  12
  13 #if defined(OS_WIN)
  14 typedef struct tagSIZE SIZE;
  15 #elif defined(OS_MACOSX)
  16 #include <ApplicationServices/ApplicationServices.h>
  17 #endif
  18
  19 namespace gfx {
  20
  21 // A size has width and height values.
  22 class Size {
  23  public:
  24   Size() : width_(0), height_(0) {}
  25   Size(int width, int height);
  26 #if defined(OS_MACOSX)
  27   explicit Size(const CGSize& s);
  28 #endif
  29
  30   ~Size() {}
  31
  32 #if defined(OS_MACOSX)
  33   Size& operator=(const CGSize& s);
  34 #endif
  35
  36   int width() const { return width_; }
  37   int height() const { return height_; }
  38
  39   int GetArea() const { return width_ * height_; }
  40
  41   void SetSize(int width, int height) {
  42     set_width(width);
  43     set_height(height);
  44   }
  45
  46   void Enlarge(int width, int height) {
  47     set_width(width_ + width);
  48     set_height(height_ + height);
  49   }
  50
  51   void set_width(int width);
  52   void set_height(int height);
  53
  54   bool operator==(const Size& s) const {
  55     return width_ == s.width_ && height_ == s.height_;
  56   }
  57
  58   bool operator!=(const Size& s) const {
  59     return !(*this == s);
  60   }
  61
  62   bool IsEmpty() const {
  63     // Size doesn't allow negative dimensions, so testing for 0 is enough.
  64     return (width_ == 0) || (height_ == 0);
  65   }
  66
  67 #if defined(OS_WIN)
  68   SIZE ToSIZE() const;
  69 #elif defined(OS_MACOSX)
  70   CGSize ToCGSize() const;
  71 #endif
  72
  73  private:
  74   int width_;
  75   int height_;
  76 };
  77
  78 std::ostream& operator<<(std::ostream& out, const gfx::Size& s);
  79
  80 }  // namespace gfx
  81
  82 #endif  // GFX_SIZE_H_