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 GetAverageCharacterWidth() const OVERRIDE; 24 virtual int GetStringWidth(const base::string16& text) const OVERRIDE; 25 virtual int GetExpectedTextWidth(int length) const OVERRIDE; 26 virtual int GetStyle() const OVERRIDE; 27 virtual std::string GetFontName() 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 average_width_; 51 52 DISALLOW_COPY_AND_ASSIGN(PlatformFontIOS); 53 }; 54 55 } // namespace gfx 56 57 #endif // UI_GFX_PLATFORM_FONT_IOS_H_ 58