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.
5 #include "ui/gfx/platform_font_ios.h"
7 #import <UIKit/UIKit.h>
11 #include "base/basictypes.h"
12 #include "base/strings/sys_string_conversions.h"
13 #include "base/strings/utf_string_conversions.h"
14 #include "ui/gfx/font.h"
15 #include "ui/gfx/font_render_params.h"
16 #include "ui/gfx/ios/NSString+CrStringDrawing.h"
20 ////////////////////////////////////////////////////////////////////////////////
21 // PlatformFontIOS, public:
23 PlatformFontIOS::PlatformFontIOS() {
24 font_size_ = [UIFont systemFontSize];
25 style_ = gfx::Font::NORMAL;
26 UIFont* system_font = [UIFont systemFontOfSize:font_size_];
27 font_name_ = base::SysNSStringToUTF8([system_font fontName]);
31 PlatformFontIOS::PlatformFontIOS(NativeFont native_font) {
32 std::string font_name = base::SysNSStringToUTF8([native_font fontName]);
33 InitWithNameSizeAndStyle(font_name,
34 [native_font pointSize],
38 PlatformFontIOS::PlatformFontIOS(const std::string& font_name,
40 InitWithNameSizeAndStyle(font_name, font_size, gfx::Font::NORMAL);
43 ////////////////////////////////////////////////////////////////////////////////
44 // PlatformFontIOS, PlatformFont implementation:
46 Font PlatformFontIOS::DeriveFont(int size_delta, int style) const {
47 return Font(new PlatformFontIOS(font_name_, font_size_ + size_delta, style));
50 int PlatformFontIOS::GetHeight() const {
54 int PlatformFontIOS::GetBaseline() const {
58 int PlatformFontIOS::GetCapHeight() const {
62 int PlatformFontIOS::GetExpectedTextWidth(int length) const {
63 return length * average_width_;
66 int PlatformFontIOS::GetStyle() const {
70 std::string PlatformFontIOS::GetFontName() const {
74 std::string PlatformFontIOS::GetActualFontNameForTesting() const {
75 return base::SysNSStringToUTF8([GetNativeFont() familyName]);
78 int PlatformFontIOS::GetFontSize() const {
82 const FontRenderParams& PlatformFontIOS::GetFontRenderParams() {
84 static FontRenderParams params;
88 NativeFont PlatformFontIOS::GetNativeFont() const {
89 return [UIFont fontWithName:base::SysUTF8ToNSString(font_name_)
93 ////////////////////////////////////////////////////////////////////////////////
94 // PlatformFontIOS, private:
96 PlatformFontIOS::PlatformFontIOS(const std::string& font_name,
99 InitWithNameSizeAndStyle(font_name, font_size, style);
102 void PlatformFontIOS::InitWithNameSizeAndStyle(const std::string& font_name,
105 font_name_ = font_name;
106 font_size_ = font_size;
111 void PlatformFontIOS::CalculateMetrics() {
112 UIFont* font = GetNativeFont();
113 height_ = font.lineHeight;
114 ascent_ = font.ascender;
115 cap_height_ = font.capHeight;
116 average_width_ = [@"x" cr_sizeWithFont:font].width;
119 ////////////////////////////////////////////////////////////////////////////////
120 // PlatformFont, public:
123 PlatformFont* PlatformFont::CreateDefault() {
124 return new PlatformFontIOS;
128 PlatformFont* PlatformFont::CreateFromNativeFont(NativeFont native_font) {
129 return new PlatformFontIOS(native_font);
133 PlatformFont* PlatformFont::CreateFromNameAndSize(const std::string& font_name,
135 return new PlatformFontIOS(font_name, font_size);