From 4efcd0222b32d924486d0a171ed9d69492ea8e98 Mon Sep 17 00:00:00 2001
From: Chris Song <chris__song@hotmail.com>
Date: Fri, 28 Jun 2013 16:18:24 +0800
Subject: [PATCH] add UIFont::italicSystemFontOfSize

---
 UIKit/Classes/UIFont.h |  1 +
 UIKit/Classes/UIFont.m | 19 +++++++++++++++++++
 2 files changed, 20 insertions(+)

diff --git a/UIKit/Classes/UIFont.h b/UIKit/Classes/UIFont.h
index 80d6ee9a..90991035 100644
--- a/UIKit/Classes/UIFont.h
+++ b/UIKit/Classes/UIFont.h
@@ -40,6 +40,7 @@
 
 + (UIFont *)systemFontOfSize:(CGFloat)fontSize;
 + (UIFont *)boldSystemFontOfSize:(CGFloat)fontSize;
++ (UIFont *)italicSystemFontOfSize:(CGFloat)fontSize;
 
 - (UIFont *)fontWithSize:(CGFloat)fontSize;
 
diff --git a/UIKit/Classes/UIFont.m b/UIKit/Classes/UIFont.m
index dcbab16e..62ad0718 100644
--- a/UIKit/Classes/UIFont.m
+++ b/UIKit/Classes/UIFont.m
@@ -32,6 +32,7 @@
 
 static NSString *UIFontSystemFontName = nil;
 static NSString *UIFontBoldSystemFontName = nil;
+static NSString *UIFontItalicSystemFontName = nil;
 
 @implementation UIFont
 
@@ -47,6 +48,12 @@ + (void)setBoldSystemFontName:(NSString *)aName
     UIFontBoldSystemFontName = [aName copy];
 }
 
++ (void)setItalicSystemFontName:(NSString *)aName
+{
+    [UIFontItalicSystemFontName release];
+    UIFontItalicSystemFontName = [aName copy];
+}
+
 + (UIFont *)_fontWithCTFont:(CTFontRef)aFont
 {
     UIFont *theFont = [[UIFont alloc] init];
@@ -137,6 +144,18 @@ + (UIFont *)boldSystemFontOfSize:(CGFloat)fontSize
     return [self fontWithNSFont:systemFont];
 }
 
++ (UIFont *)italicSystemFontOfSize:(CGFloat)fontSize
+{
+    NSFont *systemFont;
+    if (UIFontBoldSystemFontName) {
+        systemFont = [NSFont fontWithName:UIFontItalicSystemFontName size:fontSize];
+    } else {
+        NSFont * font = [NSFont boldSystemFontOfSize:fontSize];
+        systemFont = [[NSFontManager sharedFontManager] convertFont:font toHaveTrait:NSUnboldFontMask | NSItalicFontMask];
+    }
+    return [self fontWithNSFont:systemFont];
+}
+
 - (void)dealloc
 {
     if (_font) CFRelease(_font);