ui/gfx/geometry/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_GEOMETRY_SIZE_F_H_
   6 #define UI_GFX_GEOMETRY_SIZE_F_H_
   7
   8 #include <iosfwd>
   9 #include <string>
  10
  11 #include "base/compiler_specific.h"
  12 #include "ui/gfx/geometry/size_base.h"
  13 #include "ui/gfx/gfx_export.h"
  14
  15 namespace gfx {
  16
  17 // A floating version of gfx::Size.
  18 class GFX_EXPORT SizeF : public SizeBase<SizeF, float> {
  19  public:
  20   SizeF() : SizeBase<SizeF, float>(0, 0) {}
  21   SizeF(float width, float height) : SizeBase<SizeF, float>(width, height) {}
  22   ~SizeF() {}
  23
  24   void Scale(float scale) {
  25     Scale(scale, scale);
  26   }
  27
  28   void Scale(float x_scale, float y_scale) {
  29     SetSize(width() * x_scale, height() * y_scale);
  30   }
  31
  32   std::string ToString() const;
  33 };
  34
  35 inline bool operator==(const SizeF& lhs, const SizeF& rhs) {
  36   return lhs.width() == rhs.width() && lhs.height() == rhs.height();
  37 }
  38
  39 inline bool operator!=(const SizeF& lhs, const SizeF& rhs) {
  40   return !(lhs == rhs);
  41 }
  42
  43 GFX_EXPORT SizeF ScaleSize(const SizeF& p, float x_scale, float y_scale);
  44
  45 inline SizeF ScaleSize(const SizeF& p, float scale) {
  46   return ScaleSize(p, scale, scale);
  47 }
  48
  49 #if !defined(COMPILER_MSVC)
  50 extern template class SizeBase<SizeF, float>;
  51 #endif
  52
  53 // This is declared here for use in gtest-based unit tests but is defined in
  54 // the gfx_test_support target. Depend on that to use this in your unit test.
  55 // This should not be used in production code - call ToString() instead.
  56 void PrintTo(const SizeF& size, ::std::ostream* os);
  57
  58 }  // namespace gfx
  59
  60 #endif  // UI_GFX_GEOMETRY_SIZE_F_H_