Default preamble will include edges in osx. Added checks for null colour as coloured edges is not an option in osx.

3 files changed, 21 insertions, 5 deletions

diff --git a/tikzit/src/common/EdgeStyle.m b/tikzit/src/common/EdgeStyle.m
index 88b1f54..7a638c9 100644
--- a/tikzit/src/common/EdgeStyle.m
+++ b/tikzit/src/common/EdgeStyle.m
@@ -169,9 +169,11 @@
 	else if (headStyle == AH_Latex)
 		[buf appendString:@"latex"];
 
-	[buf appendString:@",draw="];
-	[buf appendString:colorName];
-
+    if(colorName != nil){
+        [buf appendString:@",draw="];
+        [buf appendString:colorName];
+    }
+        
 	if (decorationStyle != ED_None) {
 		[buf appendString:@",postaction={decorate},decoration={markings,mark="];
 		if (decorationStyle == ED_Arrow)
diff --git a/tikzit/src/common/Preambles.h b/tikzit/src/common/Preambles.h
index d507ad9..95081c4 100644
--- a/tikzit/src/common/Preambles.h
+++ b/tikzit/src/common/Preambles.h
@@ -29,6 +29,7 @@
 	NSMutableDictionary *preambleDict;
 	NSString *selectedPreambleName;
 	NSArray *styles;
+	NSArray *edges;
 	StyleManager *styleManager;
 }
 
@@ -40,6 +41,7 @@
 + (Preambles*)preambles;
 - (id)init;
 - (void)setStyles:(NSArray*)sty;
+- (void)setEdges:(NSArray*)edg;
 
 - (NSString*)preambleForName:(NSString*)name;
 - (BOOL)setPreamble:(NSString*)content forName:(NSString*)name;
diff --git a/tikzit/src/common/Preambles.m b/tikzit/src/common/Preambles.m
index af3bbc4..5343127 100644
--- a/tikzit/src/common/Preambles.m
+++ b/tikzit/src/common/Preambles.m
@@ -64,6 +64,7 @@ static NSString *POSTAMBLE =
 	preambleDict = [[NSMutableDictionary alloc] initWithCapacity:1];
 	[preambleDict setObject:[self defaultPreamble] forKey:@"custom"];
 	styles = nil;
+	edges = nil;
 	styleManager = nil;
 	return self;
 }
@@ -96,6 +97,12 @@ static NSString *POSTAMBLE =
 	styles = sty;
 }
 
+- (void)setEdges:(NSArray*)edg {
+	[edg retain];
+	[edges release];
+	edges = edg;
+}
+
 - (NSString*)styleDefinitions {
 	if (styleManager != nil) {
 		[self setStyles:[styleManager nodeStyles]];
@@ -120,11 +127,16 @@ static NSString *POSTAMBLE =
 			 [stroke hexName], [stroke redFloat], [stroke greenFloat], [stroke blueFloat]];
 		}
 	}
+    
+	if (styleManager != nil) {
+		[self setEdges:[styleManager edgeStyles]];
+	}
+    
 	[buf appendString:@"\n"];
-	for (EdgeStyle *st in [styleManager edgeStyles]) {
+	for (EdgeStyle *st in edges) {
 		[buf appendFormat:@"%@\n", [st tikz]];
 		ColorRGB *color = [st colorRGB];
-		if ([color name] == nil && ![colors containsObject:color]) {
+		if (color != nil && [color name] == nil && ![colors containsObject:color]) {
 			[colors addObject:color];
 			[colbuf appendFormat:@"\\definecolor{%@}{rgb}{%.3f,%.3f,%.3f}\n",
 				[color hexName], [color redFloat], [color greenFloat], [color blueFloat]];