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//
// CHSymbolButtonImage.m
// Chocolat
//
// Created by Alex Gordon on 11/09/2009.
// Copyright 2009 Fileability. Written in 2010 by Fileability..
//

#import "CHSymbolButtonImage.h"


@implementation CHSymbolButtonImage

static NSMutableDictionary *sharedSymbolButtonImageCache = nil;

+ (NSArray *)symbolImageWithTypeString:(NSString *)typeString drawBorder:(BOOL)drawBorder
{
CHSymbolButtonImageMask m = 0;

if (!drawBorder)
m |= CHSymbolButtonDontDrawBorder;

if ([typeString isEqual:@"f"])
m |= CHSymbolButtonFunction;

else if ([typeString isEqual:@"@"])
m |= CHSymbolButtonObjcClass | CHSymbolButtonObjcInterface;

else if ([typeString isEqual:@"FF"])
m |= CHSymbolButtonFunctionContainer;

else if ([typeString isEqual:@"@p"])
m |= CHSymbolButtonObjcProtocol | CHSymbolButtonObjcInterface;

else if ([typeString isEqual:@"@+"])
m |= CHSymbolButtonObjcCategory | CHSymbolButtonObjcInterface;

else if ([typeString isEqual:@"@ip"])
m |= CHSymbolButtonObjcClass | CHSymbolButtonObjcImplementation;

else if ([typeString isEqual:@"@pr"])
m |= CHSymbolButtonObjcProperty;

else if ([typeString isEqual:@"@m"])
m |= CHSymbolButtonObjcMethod;

else if ([typeString isEqual:@"@@m"])
m |= CHSymbolButtonObjcMethod | CHSymbolButtonStaticScope;

else if ([typeString isEqual:@"iv"])
m |= CHSymbolButtonVariable | CHSymbolButtonInstanceScope;

else if ([typeString isEqual:@"v"])
m |= CHSymbolButtonVariable;

else if ([typeString isEqual:@"ev"])
m |= CHSymbolButtonVariable;

if (m)
return [self symbolImageWithMask:m];

return nil;
}
+ (NSArray *)symbolImageWithMask:(CHSymbolButtonImageMask)mask
{
@synchronized(sharedSymbolButtonImageCache)
{
if (sharedSymbolButtonImageCache == nil)
sharedSymbolButtonImageCache = [[NSMutableDictionary alloc] initWithCapacity:20];

NSArray *cachedImage = [sharedSymbolButtonImageCache objectForKey:[NSNumber numberWithUnsignedLongLong:mask]];
if (cachedImage)
return cachedImage;


NSString *str = @"";
CGFloat offset = 0.0;
BOOL bold = NO;

if (mask & CHSymbolButtonMacro)
{
str = @"#";
offset = 0.0;
}

if (mask & CHSymbolButtonTypedef)
{
offset = 30;
if (mask & CHSymbolButtonStruct)
str = @"S";
else if (mask & CHSymbolButtonUnion)
str = @"U";
else if (mask & CHSymbolButtonEnum)
str = @"E";
else if (mask & CHSymbolButtonCppClass)
str = @"C";
else
str = @"T";
}

else if (mask & CHSymbolButtonFunction)
{
offset = 209.0;
str = [NSString stringWithFormat:@"%C", 0x0192];
}
else if (mask & CHSymbolButtonFunctionContainer)
{
offset = 209.0;
str = @"F";
}
else if (mask & CHSymbolButtonObjcMethod)
{
if (mask & CHSymbolButtonStaticScope)
offset = 231.0;
else
offset = 209.0;
str = @"M";
}
else if (mask & CHSymbolButtonObjcProperty)
{
offset = 170.0 + (209.0 - 170.0) * 2.0 / 4.0;
str = @"P";
}

else if (mask & CHSymbolButtonStruct)
{
offset = 330;
str = @"S";
}
else if ((mask & CHSymbolButtonUnion) || (mask & CHSymbolButtonEnum))
{
offset = 60;
if (mask & CHSymbolButtonUnion)
str = @"U";
else //if (mask & CHSymbolButtonEnum)
str = @"E";
}
else if (mask & CHSymbolButtonUnion)
{
offset = 330;
str = @"C";
}

else if ((mask & CHSymbolButtonObjcClass) || (mask & CHSymbolButtonCppClass))
{
offset = 252.0;
str = @"C";
}
else if (mask & CHSymbolButtonObjcBindingsListing)
{
offset = 252.0;
str = @"B";
}
else if (mask & CHSymbolButtonObjcProtocol)
{
offset = 252.0;
str = @"P";
}
else if (mask & CHSymbolButtonObjcCategory)
{
offset = 252.0;
str = @"+";
bold = YES;
}

else if (mask & CHSymbolButtonVariable)
{
str = @"v";
if (mask & CHSymbolButtonInstanceScope)
offset = 170.0;//180.0;
else
offset = 120.0;
}
else if (mask & CHSymbolButtonNotification)
{
str = @"N";
offset = 120.0;
}

if (![str length])
return nil;

NSArray *imageTuple = [NSArray arrayWithObjects:
[self symbolImageWithString:str offset:offset bold:bold isWhite:NO drawBorder:(mask & CHSymbolButtonDontDrawBorder) == 0],
[self symbolImageWithString:str offset:offset bold:bold isWhite:YES drawBorder:(mask & CHSymbolButtonDontDrawBorder) == 0],
nil];
[sharedSymbolButtonImageCache setObject:imageTuple forKey:[NSNumber numberWithUnsignedLongLong:mask]];
return imageTuple;
}
}

+ (NSImage *)symbolImageWithString:(NSString *)str offset:(CGFloat)offset bold:(BOOL)isBold isWhite:(BOOL)isWhite drawBorder:(BOOL)drawBorder
{
if (isWhite)
isBold = YES;

NSImage *image = [[NSImage alloc] initWithSize:NSMakeSize(16, 17)];
[image lockFocus];


float radius = 3;
NSRect rect = NSMakeRect(0, 1, 16, 16);
offset -= 209.0;
offset /= 360.0;

NSBezierPath *bp = [NSBezierPath bezierPathWithRoundedRect:rect xRadius:radius yRadius:radius];
NSGradient *g;

float backgroundFactor = 0.9;


if (isWhite == NO)
{
g = [[NSGradient alloc] initWithStartingColor:[self rotateColor:[NSColor colorWithCalibratedRed:0.644 green:0.716 blue:0.834 alpha:1.000] byOffset:offset]
endingColor:[self rotateColor:[NSColor colorWithCalibratedRed:0.779 green:0.846 blue:0.909 alpha:1.000] byOffset:offset]];

[g drawInBezierPath:bp angle:90];
}
else
{
[[NSColor colorWithCalibratedWhite:0.0 alpha:0.23] set];

[[NSColor colorWithCalibratedRed:1.0 green:1.0 blue:1.0 alpha:0.6 * backgroundFactor] set];
[[NSBezierPath bezierPathWithRoundedRect:NSInsetRect(rect, 0.5, 0.5) xRadius:radius - 1 yRadius:radius - 1] stroke];


}



//Inner
bp = [NSBezierPath bezierPathWithRoundedRect:NSInsetRect(rect, 1, 1) xRadius:radius - 1 yRadius:radius - 1];
if (isWhite == NO)
{
g = [[NSGradient alloc] initWithStartingColor:[self rotateColor:[NSColor colorWithCalibratedRed:1.0 green:1.0 blue:1.0 alpha:0.4] byOffset:offset]
endingColor:[self rotateColor:[NSColor colorWithCalibratedRed:1.0 green:1.0 blue:1.0 alpha:0.4] byOffset:offset]];
if (drawBorder)
[g drawInBezierPath:bp angle:90];
}
else
{
[[NSColor colorWithCalibratedWhite:0.75 alpha:0.625 * backgroundFactor] set];
[[NSBezierPath bezierPathWithRoundedRect:NSInsetRect(NSInsetRect(rect, 1.0, 1.0), 0.5, 0.5) xRadius:radius - 1 yRadius:radius - 1] stroke];
}

//Fill
bp = [NSBezierPath bezierPathWithRoundedRect:NSInsetRect(rect, 2, 2) xRadius:radius - 2 yRadius:radius - 2];
if (isWhite == NO)
{
g = [[NSGradient alloc] initWithStartingColor:[self rotateColor:[NSColor colorWithCalibratedRed:0.712 green:0.799 blue:0.905 alpha:1.000] byOffset:offset]
endingColor:[self rotateColor:[NSColor colorWithCalibratedRed:0.817 green:0.889 blue:0.953 alpha:1.000] byOffset:offset]];

if (drawBorder)
[g drawInBezierPath:bp angle:90];
}
else
{
g = [[NSGradient alloc] initWithStartingColor:[NSColor colorWithCalibratedRed:1.0 green:1.0 blue:1.0 alpha:0.25 * backgroundFactor]
endingColor:[NSColor colorWithCalibratedRed:1.0 green:1.0 blue:1.0 alpha:0.5 * backgroundFactor]];

[g drawInBezierPath:bp angle:90];
}



//Text
NSMutableDictionary *attrs = [[NSMutableDictionary alloc] initWithCapacity:2];
[attrs setValue:(isBold ? [NSFont boldSystemFontOfSize:11] : [NSFont systemFontOfSize:11]) forKey:NSFontAttributeName];

NSShadow *shadow = [[NSShadow alloc] init];
[shadow setShadowOffset:NSMakeSize(0, -1)];
[shadow setShadowBlurRadius:0.0];

if (isWhite)
{
[attrs setValue:[NSColor colorWithCalibratedWhite:1.0 alpha:1.0] forKey:NSForegroundColorAttributeName];
[shadow setShadowOffset:NSMakeSize(0, -1)];
[shadow setShadowColor:[NSColor colorWithCalibratedWhite:0.0 alpha:0.5]];
[shadow setShadowBlurRadius:1.0];
}
else
{
[attrs setValue:[self rotateColor:[NSColor colorWithCalibratedRed:0.045 green:0.209 blue:0.384 alpha:1.000] byOffset:offset] forKey:NSForegroundColorAttributeName];
[shadow setShadowColor:[NSColor colorWithCalibratedWhite:1.0 alpha:0.55]];
}

[attrs setValue:shadow forKey:NSShadowAttributeName];

BOOL isUppercase = [str length] > 0 && [str characterAtIndex:0] >= 'A' && [str characterAtIndex:0] <= 'Z';

NSSize size = [str sizeWithAttributes:attrs];
NSPoint p = NSMakePoint(rect.origin.x + rect.size.width/2.0 - size.width/2.0 + 0.5, rect.origin.y + rect.size.height/2.0 - size.height/2.0 + 1 + (isUppercase ? -1 : 0));

[str drawAtPoint:p withAttributes:attrs];



[image unlockFocus];
return image;
}

+ (NSColor *)rotateColor:(NSColor *)c byOffset:(CGFloat)offset
{
return [NSColor colorWithCalibratedHue:fmod([c hueComponent] + offset, 1.0) saturation:[c saturationComponent] brightness:[c brightnessComponent] alpha:[c alphaComponent]];
}
+ (NSColor *)rotateColor:(NSColor *)c toOffset:(CGFloat)offset
{
return [NSColor colorWithCalibratedHue:offset saturation:[c saturationComponent] brightness:[c brightnessComponent] alpha:[c alphaComponent]];
}

@end
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