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 NativeFont GetNativeFont() const OVERRIDE;
  30
  31  private:
  32   PlatformFontIOS(const std::string& font_name, int font_size, int style);
  33   virtual ~PlatformFontIOS() {}
  34
  35   // Initialize the object with the specified parameters.
  36   void InitWithNameSizeAndStyle(const std::string& font_name,
  37                                 int font_size,
  38                                 int style);
  39
  40   // Calculate and cache the font metrics.
  41   void CalculateMetrics();
  42
  43   std::string font_name_;
  44   int font_size_;
  45   int style_;
  46
  47   // Cached metrics, generated at construction.
  48   int height_;
  49   int ascent_;
  50   int cap_height_;
  51   int average_width_;
  52
  53   DISALLOW_COPY_AND_ASSIGN(PlatformFontIOS);
  54 };
  55
  56 }  // namespace gfx
  57
  58 #endif  // UI_GFX_PLATFORM_FONT_IOS_H_