ui/gfx/platform_font_ios.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_PLATFORM_FONT_IOS_H_
   6 #define UI_GFX_PLATFORM_FONT_IOS_H_
   7
   8 #include "ui/gfx/platform_font.h"
   9
  10 namespace gfx {
  11
  12 class PlatformFontIOS : public PlatformFont {
  13  public:
  14   PlatformFontIOS();
  15   explicit PlatformFontIOS(NativeFont native_font);
  16   PlatformFontIOS(const std::string& font_name,
  17                   int font_size);
  18
  19   // Overridden from PlatformFont:
  20   virtual Font DeriveFont(int size_delta, int style) const OVERRIDE;
  21   virtual int GetHeight() const OVERRIDE;
  22   virtual int GetBaseline() const OVERRIDE;
  23   virtual int GetCapHeight() const OVERRIDE;
  24   virtual int GetExpectedTextWidth(int length) const OVERRIDE;
  25   virtual int GetStyle() const OVERRIDE;
  26   virtual std::string GetFontName() const OVERRIDE;
  27   virtual std::string GetActualFontNameForTesting() const OVERRIDE;
  28   virtual int GetFontSize() const OVERRIDE;
  29   virtual const FontRenderParams& GetFontRenderParams() const OVERRIDE;
  30   virtual NativeFont GetNativeFont() const OVERRIDE;
  31
  32  private:
  33   PlatformFontIOS(const std::string& font_name, int font_size, int style);
  34   virtual ~PlatformFontIOS() {}
  35
  36   // Initialize the object with the specified parameters.
  37   void InitWithNameSizeAndStyle(const std::string& font_name,
  38                                 int font_size,
  39                                 int style);
  40
  41   // Calculate and cache the font metrics.
  42   void CalculateMetrics();
  43
  44   std::string font_name_;
  45   int font_size_;
  46   int style_;
  47
  48   // Cached metrics, generated at construction.
  49   int height_;
  50   int ascent_;
  51   int cap_height_;
  52   int average_width_;
  53
  54   DISALLOW_COPY_AND_ASSIGN(PlatformFontIOS);
  55 };
  56
  57 }  // namespace gfx
  58
  59 #endif  // UI_GFX_PLATFORM_FONT_IOS_H_