ui/gfx/size_f.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_SIZE_F_H_
   6 #define UI_GFX_SIZE_F_H_
   7
   8 #include <string>
   9
  10 #include "base/compiler_specific.h"
  11 #include "ui/base/ui_export.h"
  12 #include "ui/gfx/size_base.h"
  13
  14 namespace gfx {
  15
  16 // A floating version of gfx::Size.
  17 class UI_EXPORT SizeF : public SizeBase<SizeF, float> {
  18  public:
  19   SizeF() : SizeBase<SizeF, float>(0, 0) {}
  20   SizeF(float width, float height) : SizeBase<SizeF, float>(width, height) {}
  21   ~SizeF() {}
  22
  23   void Scale(float scale) {
  24     Scale(scale, scale);
  25   }
  26
  27   void Scale(float x_scale, float y_scale) {
  28     SetSize(width() * x_scale, height() * y_scale);
  29   }
  30
  31   std::string ToString() const;
  32 };
  33
  34 inline bool operator==(const SizeF& lhs, const SizeF& rhs) {
  35   return lhs.width() == rhs.width() && lhs.height() == rhs.height();
  36 }
  37
  38 inline bool operator!=(const SizeF& lhs, const SizeF& rhs) {
  39   return !(lhs == rhs);
  40 }
  41
  42 UI_EXPORT SizeF ScaleSize(const SizeF& p, float x_scale, float y_scale);
  43
  44 inline SizeF ScaleSize(const SizeF& p, float scale) {
  45   return ScaleSize(p, scale, scale);
  46 }
  47
  48 #if !defined(COMPILER_MSVC)
  49 extern template class SizeBase<SizeF, float>;
  50 #endif
  51
  52 }  // namespace gfx
  53
  54 #endif  // UI_GFX_SIZE_F_H_