From 2f6a98730f6af18a71b31c72468042f3b5b81915 Mon Sep 17 00:00:00 2001
From: Alex Merry <alex.merry@cs.ox.ac.uk>
Date: Wed, 18 Apr 2012 13:45:43 +0100
Subject: Add edge colours

---
 tikzit/src/common/EdgeStyle.h |  8 ++++++++
 tikzit/src/common/EdgeStyle.m | 30 ++++++++++++++++++++++++++++++
 tikzit/src/common/NodeStyle.h |  4 ++--
 tikzit/src/common/Preambles.m | 11 +++++++++--
 4 files changed, 49 insertions(+), 4 deletions(-)

(limited to 'tikzit/src/common')

diff --git a/tikzit/src/common/EdgeStyle.h b/tikzit/src/common/EdgeStyle.h
index 248d8f4..83c3ecd 100644
--- a/tikzit/src/common/EdgeStyle.h
+++ b/tikzit/src/common/EdgeStyle.h
@@ -23,6 +23,7 @@
 
 #import <Foundation/Foundation.h>
 #import "PropertyHolder.h"
+#import "ColorRGB.h"
 
 typedef enum {
 	AH_None = 0,
@@ -40,10 +41,17 @@ typedef enum {
     ArrowHeadStyle headStyle, tailStyle;
     EdgeDectorationStyle decorationStyle;
     float thickness;
+	ColorRGB *colorRGB;
     NSString *name;
     NSString *category;
 }
 
+/*!
+ @property   colorRGB
+ @brief      The color to render the line in
+ */
+@property (copy) ColorRGB *colorRGB;
+
 @property (copy) NSString *name;
 @property (copy) NSString *category;
 @property (assign) ArrowHeadStyle headStyle;
diff --git a/tikzit/src/common/EdgeStyle.m b/tikzit/src/common/EdgeStyle.m
index da669e3..88b1f54 100644
--- a/tikzit/src/common/EdgeStyle.m
+++ b/tikzit/src/common/EdgeStyle.m
@@ -31,9 +31,16 @@
 				@"headStyle",
 				@"decorationStyle",
 				@"thickness",
+				@"colorRGB.red",
+				@"colorRGB.blue",
+				@"colorRGB.green",
 				@"name",
 				nil]
           triggerChangeNotificationsForDependentKey:@"tikz"];
+	[self setKeys:[NSArray arrayWithObjects:
+				@"colorRGB.name",
+				nil]
+          triggerChangeNotificationsForDependentKey:@"colorIsKnown"];
 }
 
 - (id)initWithName:(NSString*)nm {
@@ -43,6 +50,7 @@
 		headStyle = AH_None;
 		tailStyle = AH_None;
 		decorationStyle = ED_None;
+		colorRGB = [[ColorRGB alloc] initWithRed:0 green:0 blue:0];
 		name = nm;
 		category = nil;
 		thickness = 1.0f;
@@ -64,12 +72,14 @@
 	[style setTailStyle:[self tailStyle]];
 	[style setDecorationStyle:[self decorationStyle]];
 	[style setThickness:[self thickness]];
+	[style setColorRGB:[self colorRGB]];
 	return style;
 }
 
 - (void)dealloc {
     [name release];
     [category release];
+    [colorRGB release];
     [super dealloc];
 }
 
@@ -127,9 +137,26 @@
 	}
 }
 
+- (ColorRGB*)colorRGB {
+	return colorRGB;
+}
+
+- (void)setColorRGB:(ColorRGB*)c {
+	if (colorRGB != c) {
+		ColorRGB *oldValue = colorRGB;
+		colorRGB = [c copy];
+		[self postPropertyChanged:@"colorRGB" oldValue:oldValue];
+		[oldValue release];
+	}
+}
+
 - (NSString*)tikz {
 	NSMutableString *buf = [NSMutableString stringWithFormat:@"\\tikzstyle{%@}=[", name];
 
+	NSString *colorName = [colorRGB name];
+	if (colorName == nil)
+		colorName = [colorRGB hexName];
+
 	if (tailStyle == AH_Plain)
 		[buf appendString:@"<"];
 	else if (tailStyle == AH_Latex)
@@ -142,6 +169,9 @@
 	else if (headStyle == AH_Latex)
 		[buf appendString:@"latex"];
 
+	[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/NodeStyle.h b/tikzit/src/common/NodeStyle.h
index a78abaa..68aafad 100644
--- a/tikzit/src/common/NodeStyle.h
+++ b/tikzit/src/common/NodeStyle.h
@@ -59,13 +59,13 @@
 
 /*!
  @property   strokeColorRGB
- @brief      Stroke color.
+ @brief      The stroke color used to render the node
  */
 @property (copy) ColorRGB *strokeColorRGB;
 
 /*!
  @property   fillColorRGB
- @brief      Fill color.
+ @brief      The fill color used to render the node
  */
 @property (copy) ColorRGB *fillColorRGB;
 
diff --git a/tikzit/src/common/Preambles.m b/tikzit/src/common/Preambles.m
index d41f9b0..e107d5e 100644
--- a/tikzit/src/common/Preambles.m
+++ b/tikzit/src/common/Preambles.m
@@ -23,6 +23,7 @@
 
 #import "Preambles.h"
 #import "NodeStyle.h"
+#import "EdgeStyle.h"
 
 static NSString *PREAMBLE_HEAD =
 @"\\documentclass{article}\n"
@@ -112,15 +113,21 @@ static NSString *POSTAMBLE =
 			 [fill hexName], [fill redFloat], [fill greenFloat], [fill blueFloat]];
 		}
 		
-		if ([fill name] == nil && ![colors containsObject:fill]) {
+		if ([stroke name] == nil && ![colors containsObject:stroke]) {
 			[colors addObject:stroke];
 			[colbuf appendFormat:@"\\definecolor{%@}{rgb}{%.3f,%.3f,%.3f}\n",
-			 [fill hexName], [fill redFloat], [fill greenFloat], [fill blueFloat]];
+			 [stroke hexName], [stroke redFloat], [stroke greenFloat], [stroke blueFloat]];
 		}
 	}
 	[buf appendString:@"\n"];
 	for (EdgeStyle *st in [styleManager edgeStyles]) {
 		[buf appendFormat:@"%@\n", [st tikz]];
+		ColorRGB *color = [st colorRGB];
+		if ([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]];
+		}
 	}
 	
 	NSString *defs = [[NSString alloc] initWithFormat:@"%@\n%@", colbuf, buf];
-- 
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