method to create CTFont from descriptor

Cocoanetics · Mar 17, 2011 · feb1899 · feb1899
1 parent 26dc318
commit feb1899
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Showing 2 changed files with 41 additions and 1 deletion.
diff --git a/Classes/DTCoreTextFontDescriptor.h b/Classes/DTCoreTextFontDescriptor.h
@@ -30,15 +30,20 @@
 }
 
 + (DTCoreTextFontDescriptor *)fontDescriptorWithFontAttributes:(NSDictionary *)attributes;
++ (DTCoreTextFontDescriptor *)fontDescriptorForCTFont:(CTFontRef)ctFont;
 
 - (id)initWithFontAttributes:(NSDictionary *)attributes;
+- (id)initWithCTFont:(CTFontRef)ctFont;
+
 - (void)setFontAttributes:(NSDictionary *)newAttributes;
 
 - (void)normalize;
 
 - (CTFontSymbolicTraits)symbolicTraits;
 - (NSDictionary *)fontAttributes;
 
+- (CTFontRef)newMatchingFont;
+
 @property (nonatomic, copy) NSString *fontFamily;
 @property (nonatomic, copy) NSString *fontName;
 

diff --git a/Classes/DTCoreTextFontDescriptor.m b/Classes/DTCoreTextFontDescriptor.m
@@ -17,16 +17,40 @@ + (DTCoreTextFontDescriptor *)fontDescriptorWithFontAttributes:(NSDictionary *)a
 	return [[[DTCoreTextFontDescriptor alloc] initWithFontAttributes:attributes] autorelease];
 }
 
++ (DTCoreTextFontDescriptor *)fontDescriptorForCTFont:(CTFontRef)ctFont
+{
+	return [[[DTCoreTextFontDescriptor alloc] initWithCTFont:ctFont] autorelease];
+}
+
 - (id)initWithFontAttributes:(NSDictionary *)attributes
 {
-	if (self = [super init])
+    self = [super init];
+	if (self)
 	{
 		[self setFontAttributes:attributes];
 	}
 
 	return self;
 }
 
+- (id)initWithCTFont:(CTFontRef)ctFont
+{
+    self = [super init];
+    if (self)
+    {
+        CTFontDescriptorRef fd = CTFontCopyFontDescriptor(ctFont);
+        CFDictionaryRef dict = CTFontDescriptorCopyAttributes(fd);
+
+        [self setFontAttributes:(id)dict];
+
+        CFRelease(dict);
+        CFRelease(fd);
+    }
+
+    return self;
+}
+
+
 - (void)dealloc
 {
 	[fontFamily release];
@@ -181,6 +205,17 @@ - (void)normalize
 
 }
 
+
+- (CTFontRef)newMatchingFont
+{
+    NSDictionary *fontAttributes = [self fontAttributes];
+    CTFontDescriptorRef fontDesc = CTFontDescriptorCreateWithAttributes((CFDictionaryRef)fontAttributes);
+    CTFontRef font = CTFontCreateWithFontDescriptor(fontDesc, self.pointSize, NULL);
+    CFRelease(fontDesc);
+
+    return font;
+}
+
 #pragma mark Copying
 
 - (id)copyWithZone:(NSZone *)zone