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libs-gui/Source/NSColor.m
Fred Kiefer 08529677f0 Added some more keyed decoding. 
git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@20211 72102866-910b-0410-8b05-ffd578937521
2004-10-08 21:24:25 +00:00

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/** <title>NSColor</title>
<abstract>The colorful color class</abstract>
Copyright (C) 1996, 1998, 2001, 2002 Free Software Foundation, Inc.
Author: Scott Christley <scottc@net-community.com>
Date: 1996
Author: Fred Kiefer <fredkiefer@gmx.de>
Date: 2001, 2002
This file is part of the GNUstep GUI Library.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; see the file COPYING.LIB.
If not, write to the Free Software Foundation,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <Foundation/NSString.h>
#include <Foundation/NSArchiver.h>
#include <Foundation/NSDictionary.h>
#include <Foundation/NSException.h>
#include <Foundation/NSNotification.h>
#include <Foundation/NSUserDefaults.h>
#include <Foundation/NSBundle.h>
#include <Foundation/NSDebug.h>
#include <Foundation/NSScanner.h>
#include "AppKit/NSColor.h"
#include "AppKit/NSColorList.h"
#include "AppKit/NSPasteboard.h"
#include "AppKit/NSView.h"
#include "AppKit/NSImage.h"
#include "AppKit/NSGraphics.h"
#include "AppKit/PSOperators.h"
static Class NSColorClass;
@interface GSNamedColor : NSColor
{
NSString *_catalog_name;
NSString *_color_name;
NSString *_cached_name_space;
NSColor *_cached_color;
}
- (NSColor*) initWithCatalogName: (NSString *)listName
colorName: (NSString *)colorName;
- (void) recache;
@end
@interface GSWhiteColor : NSColor
{
float _white_component;
float _alpha_component;
}
@end
@interface GSDeviceWhiteColor : GSWhiteColor
- (NSColor*) initWithDeviceWhite: (float)white
alpha: (float)alpha;
@end
@interface GSCalibratedWhiteColor : GSWhiteColor
- (NSColor*) initWithCalibratedWhite: (float)white
alpha: (float)alpha;
@end
@interface GSDeviceCMYKColor : NSColor
{
float _cyan_component;
float _magenta_component;
float _yellow_component;
float _black_component;
float _alpha_component;
}
- (NSColor*) initWithDeviceCyan: (float)cyan
magenta: (float)magenta
yellow: (float)yellow
black: (float)black
alpha: (float)alpha;
@end
@interface GSRGBColor : NSColor
{
float _red_component;
float _green_component;
float _blue_component;
float _hue_component;
float _saturation_component;
float _brightness_component;
float _alpha_component;
}
@end
@interface GSDeviceRGBColor : GSRGBColor
- (NSColor*) initWithDeviceRed: (float)red
green: (float)green
blue: (float)blue
alpha: (float)alpha;
- (NSColor*) initWithDeviceHue: (float)hue
saturation: (float)saturation
brightness: (float)brightness
alpha: (float)alpha;
@end
@interface GSCalibratedRGBColor : GSRGBColor
- (NSColor*) initWithCalibratedRed: (float)red
green: (float)green
blue: (float)blue
alpha: (float)alpha;
- (NSColor*) initWithCalibratedHue: (float)hue
saturation: (float)saturation
brightness: (float)brightness
alpha: (float)alpha;
@end
// FIXME: This is not described in the specification
@interface GSPatternColor : NSColor
{
NSImage *_pattern;
}
- (NSColor*) initWithPatternImage: (NSImage*) pattern;
@end
@interface NSColor (GNUstepPrivate)
+ (NSColor*) colorFromString: (NSString*)string;
+ (void) defaultsDidChange: (NSNotification*)notification;
@end
// Class variables
static BOOL gnustep_gui_ignores_alpha = YES;
static NSColorList *systemColors = nil;
static NSMutableDictionary *colorStrings = nil;
static NSMutableDictionary *systemDict = nil;
static
void initSystemColors(void)
{
NSString *white;
NSString *lightGray;
NSString *gray;
NSString *darkGray;
NSString *black;
// Set up a dictionary containing the names of all the system colors
// as keys and with colors in string format as values.
white = [NSString stringWithFormat: @"%f %f %f",
NSWhite, NSWhite, NSWhite];
lightGray = [NSString stringWithFormat: @"%f %f %f",
NSLightGray, NSLightGray, NSLightGray];
gray = [NSString stringWithFormat: @"%f %f %f",
NSGray, NSGray, NSGray];
darkGray = [NSString stringWithFormat: @"%f %f %f",
NSDarkGray, NSDarkGray, NSDarkGray];
black = [NSString stringWithFormat: @"%f %f %f",
NSBlack, NSBlack, NSBlack];
colorStrings = [[NSMutableDictionary alloc]
initWithObjectsAndKeys:
lightGray, @"controlBackgroundColor",
lightGray, @"controlColor",
lightGray, @"controlHighlightColor",
white, @"controlLightHighlightColor",
darkGray, @"controlShadowColor",
black, @"controlDarkShadowColor",
black, @"controlTextColor",
darkGray, @"disabledControlTextColor",
gray, @"gridColor",
lightGray, @"headerColor",
black, @"headerTextColor",
white, @"highlightColor",
black, @"keyboardFocusIndicatorColor",
lightGray, @"knobColor",
gray, @"scrollBarColor",
white, @"selectedControlColor",
black, @"selectedControlTextColor",
lightGray, @"selectedKnobColor",
white, @"selectedMenuItemColor",
black, @"selectedMenuItemTextColor",
lightGray, @"selectedTextBackgroundColor",
black, @"selectedTextColor",
black, @"shadowColor",
white, @"textBackgroundColor",
black, @"textColor",
lightGray, @"windowBackgroundColor",
black, @"windowFrameColor",
white, @"windowFrameTextColor",
//gray, @"windowFrameColor",
//black, @"windowFrameTextColor",
nil];
systemColors = [NSColorList colorListNamed: @"System"];
if (systemColors == nil)
{
systemColors = [[NSColorList alloc] initWithName: @"System"];
}
{
NSEnumerator *e;
NSString *r;
BOOL changed = NO;
// Set up default system colors
e = [colorStrings keyEnumerator];
while ((r = (NSString *)[e nextObject]))
{
NSString *cs;
NSColor *c;
if ([systemColors colorWithKey: r])
continue;
cs = [colorStrings objectForKey: r];
c = [NSColorClass colorFromString: cs];
NSCAssert1(c, @"couldn't get default system color %@", r);
[systemColors setColor: c forKey: r];
changed = YES;
}
if (changed)
[systemColors writeToFile: nil];
}
systemDict = [NSMutableDictionary new];
}
static NSColor*
systemColorWithName(NSString *name)
{
NSColor* col = [systemDict objectForKey: name];
if (col == nil)
{
col = [NSColor colorWithCatalogName: @"System"
colorName: name];
[systemDict setObject: col forKey: name];
}
return col;
}
@implementation NSColor
//
// Class methods
//
+ (void) initialize
{
if (self == [NSColor class])
{
NSColorClass = self;
// Set the version number
[self setVersion: 3];
// ignore alpha by default
gnustep_gui_ignores_alpha = YES;
// Load or define the system colour list
initSystemColors();
// ensure user defaults are loaded, then use them and watch for changes.
[self defaultsDidChange: nil];
[[NSNotificationCenter defaultCenter]
addObserver: self
selector: @selector(defaultsDidChange:)
name: NSUserDefaultsDidChangeNotification
object: nil];
}
}
//
// Creating an NSColor from Component Values
//
+ (NSColor*) colorWithCalibratedHue: (float)hue
saturation: (float)saturation
brightness: (float)brightness
alpha: (float)alpha
{
id c;
c = [GSCalibratedRGBColor allocWithZone: NSDefaultMallocZone()];
c = [c initWithCalibratedHue: hue
saturation: saturation
brightness: brightness
alpha: alpha];
return AUTORELEASE(c);
}
+ (NSColor*) colorWithCalibratedRed: (float)red
green: (float)green
blue: (float)blue
alpha: (float)alpha
{
id c;
c = [GSCalibratedRGBColor allocWithZone: NSDefaultMallocZone()];
c = [c initWithCalibratedRed: red
green: green
blue: blue
alpha: alpha];
return AUTORELEASE(c);
}
+ (NSColor*) colorWithCalibratedWhite: (float)white
alpha: (float)alpha
{
id c;
c = [GSCalibratedWhiteColor allocWithZone: NSDefaultMallocZone()] ;
c = [c initWithCalibratedWhite: white
alpha: alpha];
return AUTORELEASE(c);
}
+ (NSColor*) colorWithCatalogName: (NSString *)listName
colorName: (NSString *)colorName
{
id c;
c = [GSNamedColor allocWithZone: NSDefaultMallocZone()] ;
c = [c initWithCatalogName: listName
colorName: colorName];
return AUTORELEASE(c);
}
+ (NSColor*) colorWithDeviceCyan: (float)cyan
magenta: (float)magenta
yellow: (float)yellow
black: (float)black
alpha: (float)alpha
{
id c;
c = [GSDeviceCMYKColor allocWithZone: NSDefaultMallocZone()];
c = [c initWithDeviceCyan: cyan
magenta: magenta
yellow: yellow
black: black
alpha: alpha];
return AUTORELEASE(c);
}
+ (NSColor*) colorWithDeviceHue: (float)hue
saturation: (float)saturation
brightness: (float)brightness
alpha: (float)alpha
{
id c;
c = [GSDeviceRGBColor allocWithZone: NSDefaultMallocZone()];
c = [c initWithDeviceHue: hue
saturation: saturation
brightness: brightness
alpha: alpha];
return AUTORELEASE(c);
}
+ (NSColor*) colorWithDeviceRed: (float)red
green: (float)green
blue: (float)blue
alpha: (float)alpha
{
id c;
c = [GSDeviceRGBColor allocWithZone: NSDefaultMallocZone()];
c = [c initWithDeviceRed: red
green: green
blue: blue
alpha: alpha];
return AUTORELEASE(c);
}
+ (NSColor*) colorWithDeviceWhite: (float)white
alpha: (float)alpha
{
id c;
c = [GSDeviceWhiteColor allocWithZone: NSDefaultMallocZone()];
c = [c initWithDeviceWhite: white
alpha: alpha];
return AUTORELEASE(c);
}
+ (NSColor*) colorForControlTint: (NSControlTint)controlTint
{
// TODO
return nil;
}
+ (NSColor*) colorWithPatternImage: (NSImage*)image
{
id c;
c = [GSPatternColor allocWithZone: NSDefaultMallocZone()];
c = [c initWithPatternImage: image];
return AUTORELEASE(c);
}
//
// Creating an NSColor With Preset Components
//
+ (NSColor*) blackColor
{
return [self colorWithCalibratedWhite: NSBlack alpha: 1.0];
}
+ (NSColor*) blueColor
{
return [self colorWithCalibratedRed: 0.0
green: 0.0
blue: 1.0
alpha: 1.0];
}
+ (NSColor*) brownColor
{
return [self colorWithCalibratedRed: 0.6
green: 0.4
blue: 0.2
alpha: 1.0];
}
+ (NSColor*) clearColor
{
return [self colorWithCalibratedWhite: 0.0 alpha: 0.0];
}
+ (NSColor*) cyanColor
{
return [self colorWithCalibratedRed: 0.0
green: 1.0
blue: 1.0
alpha: 1.0];
}
+ (NSColor*) darkGrayColor
{
return [self colorWithCalibratedWhite: NSDarkGray alpha: 1.0];
}
+ (NSColor*) grayColor
{
return [self colorWithCalibratedWhite: NSGray alpha: 1.0];
}
+ (NSColor*) greenColor
{
return [self colorWithCalibratedRed: 0.0
green: 1.0
blue: 0.0
alpha: 1.0];
}
+ (NSColor*) lightGrayColor
{
return [self colorWithCalibratedWhite: NSLightGray alpha: 1];
}
+ (NSColor*) magentaColor
{
return [self colorWithCalibratedRed: 1.0
green: 0.0
blue: 1.0
alpha: 1.0];
}
+ (NSColor*) orangeColor
{
return [self colorWithCalibratedRed: 1.0
green: 0.5
blue: 0.0
alpha: 1.0];
}
+ (NSColor*) purpleColor
{
return [self colorWithCalibratedRed: 0.5
green: 0.0
blue: 0.5
alpha: 1.0];
}
+ (NSColor*) redColor
{
return [self colorWithCalibratedRed: 1.0
green: 0.0
blue: 0.0
alpha: 1.0];
}
+ (NSColor*) whiteColor
{
return [self colorWithCalibratedWhite: NSWhite alpha: 1.0];
}
+ (NSColor*) yellowColor
{
return [self colorWithCalibratedRed: 1.0
green: 1.0
blue: 0.0
alpha: 1.0];
}
//
// Ignoring Alpha Components
//
+ (BOOL) ignoresAlpha
{
return gnustep_gui_ignores_alpha;
}
+ (void) setIgnoresAlpha: (BOOL)flag
{
gnustep_gui_ignores_alpha = flag;
}
//
// Copying and Pasting
//
+ (NSColor*) colorFromPasteboard: (NSPasteboard *)pasteBoard
{
NSData *d = [pasteBoard dataForType: NSColorPboardType];
// FIXME: This should better use the description format
if (d != nil)
return [NSUnarchiver unarchiveObjectWithData: d];
return nil;
}
//
// System colors stuff.
//
+ (NSColor*) controlBackgroundColor
{
return systemColorWithName(@"controlBackgroundColor");
}
+ (NSColor*) controlColor
{
return systemColorWithName(@"controlColor");
}
+ (NSColor*) controlHighlightColor
{
return systemColorWithName(@"controlHighlightColor");
}
+ (NSColor*) controlLightHighlightColor
{
return systemColorWithName(@"controlLightHighlightColor");
}
+ (NSColor*) controlShadowColor
{
return systemColorWithName(@"controlShadowColor");
}
+ (NSColor*) controlDarkShadowColor
{
return systemColorWithName(@"controlDarkShadowColor");
}
+ (NSColor*) controlTextColor
{
return systemColorWithName(@"controlTextColor");
}
+ (NSColor*) disabledControlTextColor
{
return systemColorWithName(@"disabledControlTextColor");
}
+ (NSColor*) gridColor
{
return systemColorWithName(@"gridColor");
}
+ (NSColor*) headerColor
{
return systemColorWithName(@"headerColor");
}
+ (NSColor*) headerTextColor
{
return systemColorWithName(@"headerTextColor");
}
+ (NSColor*) highlightColor
{
return systemColorWithName(@"highlightColor");
}
+ (NSColor*) keyboardFocusIndicatorColor
{
return systemColorWithName(@"keyboardFocusIndicatorColor");
}
+ (NSColor*) knobColor
{
return systemColorWithName(@"knobColor");
}
+ (NSColor*) scrollBarColor
{
return systemColorWithName(@"scrollBarColor");
}
+ (NSColor*) selectedControlColor
{
return systemColorWithName(@"selectedControlColor");
}
+ (NSColor*) selectedControlTextColor
{
return systemColorWithName(@"selectedControlTextColor");
}
+ (NSColor*) selectedKnobColor
{
return systemColorWithName(@"selectedKnobColor");
}
+ (NSColor*) selectedMenuItemColor
{
return systemColorWithName(@"selectedMenuItemColor");
}
+ (NSColor*) selectedMenuItemTextColor
{
return systemColorWithName(@"selectedMenuItemTextColor");
}
+ (NSColor*) selectedTextBackgroundColor
{
return systemColorWithName(@"selectedTextBackgroundColor");
}
+ (NSColor*) selectedTextColor
{
return systemColorWithName(@"selectedTextColor");
}
+ (NSColor*) shadowColor
{
return systemColorWithName(@"shadowColor");
}
+ (NSColor*) textBackgroundColor
{
return systemColorWithName(@"textBackgroundColor");
}
+ (NSColor*) textColor
{
return systemColorWithName(@"textColor");
}
+ (NSColor *)windowBackgroundColor
{
return systemColorWithName(@"windowBackgroundColor");
}
+ (NSColor*) windowFrameColor
{
return systemColorWithName(@"windowFrameColor");
}
+ (NSColor*) windowFrameTextColor
{
return systemColorWithName(@"windowFrameTextColor");
}
////////////////////////////////////////////////////////////
//
// Instance methods
//
- (id) copyWithZone: (NSZone*)aZone
{
if (NSShouldRetainWithZone(self, aZone))
{
return RETAIN(self);
}
else
{
return NSCopyObject(self, 0, aZone);
}
}
- (NSString*) description
{
[self subclassResponsibility: _cmd];
return nil;
}
//
// Retrieving a Set of Components
//
- (void) getCyan: (float*)cyan
magenta: (float*)magenta
yellow: (float*)yellow
black: (float*)black
alpha: (float*)alpha
{
[NSException raise: NSInternalInconsistencyException
format: @"Called getCyan:magenta:yellow:black:alpha: on non-CMYK colour"];
}
- (void) getHue: (float*)hue
saturation: (float*)saturation
brightness: (float*)brightness
alpha: (float*)alpha
{
[NSException raise: NSInternalInconsistencyException
format: @"Called getHue:saturation:brightness:alpha: on non-RGB colour"];
}
- (void) getRed: (float*)red
green: (float*)green
blue: (float*)blue
alpha: (float*)alpha
{
[NSException raise: NSInternalInconsistencyException
format: @"Called getRed:green:blue:alpha: on non-RGB colour"];
}
- (void) getWhite: (float*)white
alpha: (float*)alpha
{
[NSException raise: NSInternalInconsistencyException
format: @"Called getWhite:alpha: on non-grayscale colour"];
}
- (BOOL) isEqual: (id)other
{
if (other == self)
return YES;
if ([other isKindOfClass: NSColorClass] == NO)
return NO;
else
{
[self subclassResponsibility: _cmd];
return NO;
}
}
//
// Retrieving Individual Components
//
- (float) alphaComponent
{
return 1.0;
}
- (float) blackComponent
{
[NSException raise: NSInternalInconsistencyException
format: @"Called blackComponent on non-CMYK colour"];
return 0.0;
}
- (float) blueComponent
{
[NSException raise: NSInternalInconsistencyException
format: @"Called blueComponent on non-RGB colour"];
return 0.0;
}
- (float) brightnessComponent
{
[NSException raise: NSInternalInconsistencyException
format: @"Called brightnessComponent on non-RGB colour"];
return 0.0;
}
- (NSString *) catalogNameComponent
{
[NSException raise: NSInternalInconsistencyException
format: @"Called catalogNameComponent on colour with name"];
return nil;
}
- (NSString *) colorNameComponent
{
[NSException raise: NSInternalInconsistencyException
format: @"Called colorNameComponent on colour with name"];
return nil;
}
- (float) cyanComponent
{
[NSException raise: NSInternalInconsistencyException
format: @"Called cyanComponent on non-CMYK colour"];
return 0.0;
}
- (float) greenComponent
{
[NSException raise: NSInternalInconsistencyException
format: @"Called greenComponent on non-RGB colour"];
return 0.0;
}
- (float) hueComponent
{
[NSException raise: NSInternalInconsistencyException
format: @"Called hueComponent on non-RGB colour"];
return 0.0;
}
- (NSString *) localizedCatalogNameComponent
{
[NSException raise: NSInternalInconsistencyException
format: @"Called localizedCatalogNameComponent on colour with name"];
return nil;
}
- (NSString *) localizedColorNameComponent
{
[NSException raise: NSInternalInconsistencyException
format: @"Called localizedColorNameComponent on colour with name"];
return nil;
}
- (float) magentaComponent
{
[NSException raise: NSInternalInconsistencyException
format: @"Called magentaComponent on non-CMYK colour"];
return 0.0;
}
- (float) redComponent
{
[NSException raise: NSInternalInconsistencyException
format: @"Called redComponent on non-RGB colour"];
return 0.0;
}
- (float) saturationComponent
{
[NSException raise: NSInternalInconsistencyException
format: @"Called saturationComponent on non-RGB colour"];
return 0.0;
}
- (float) whiteComponent
{
[NSException raise: NSInternalInconsistencyException
format: @"Called whiteComponent on non-grayscale colour"];
return 0.0;
}
- (NSImage*) patternImage
{
[NSException raise: NSInternalInconsistencyException
format: @"Called patternImage on non-pattern colour"];
return nil;
}
- (float) yellowComponent
{
[NSException raise: NSInternalInconsistencyException
format: @"Called yellowComponent on non-CMYK colour"];
return 0.0;
}
//
// Converting to Another Color Space
//
- (NSString *) colorSpaceName
{
[self subclassResponsibility: _cmd];
return nil;
}
- (NSColor*) colorUsingColorSpaceName: (NSString *)colorSpace
{
return [self colorUsingColorSpaceName: colorSpace
device: nil];
}
- (NSColor*) colorUsingColorSpaceName: (NSString *)colorSpace
device: (NSDictionary *)deviceDescription
{
if (colorSpace == nil)
{
if (deviceDescription != nil)
colorSpace = [deviceDescription objectForKey: NSDeviceColorSpaceName];
if (colorSpace == nil)
colorSpace = NSDeviceRGBColorSpace;
}
if ([colorSpace isEqualToString: [self colorSpaceName]])
{
return self;
}
if ([colorSpace isEqualToString: NSNamedColorSpace])
{
// FIXME: We cannot convert to named color space.
return nil;
}
[self subclassResponsibility: _cmd];
return nil;
}
//
// Changing the Color
//
- (NSColor*) blendedColorWithFraction: (float)fraction
ofColor: (NSColor*)aColor
{
NSColor *myColor = [self colorUsingColorSpaceName: NSCalibratedRGBColorSpace];
NSColor *other = [aColor colorUsingColorSpaceName: NSCalibratedRGBColorSpace];
float mr, mg, mb, ma, or, og, ob, oa, red, green, blue, alpha;
if (fraction <= 0.0)
{
return self;
}
if (fraction >= 1.0)
{
return aColor;
}
if (myColor == nil || other == nil)
{
return nil;
}
[myColor getRed: &mr green: &mg blue: &mb alpha: &ma];
[other getRed: &or green: &og blue: &ob alpha: &oa];
red = fraction * or + (1 - fraction) * mr;
green = fraction * og + (1 - fraction) * mg;
blue = fraction * ob + (1 - fraction) * mb;
alpha = fraction * oa + (1 - fraction) * ma;
return [NSColorClass colorWithCalibratedRed: red
green: green
blue: blue
alpha: alpha];
}
- (NSColor*) colorWithAlphaComponent: (float)alpha
{
return self;
}
- (NSColor*) highlightWithLevel: (float)level
{
return [self blendedColorWithFraction: level
ofColor: [NSColorClass highlightColor]];
}
- (NSColor*) shadowWithLevel: (float)level
{
return [self blendedColorWithFraction: level
ofColor: [NSColorClass shadowColor]];
}
//
// Copying and Pasting
//
- (void) writeToPasteboard: (NSPasteboard *)pasteBoard
{
// FIXME: We should better use the description
NSData *d = [NSArchiver archivedDataWithRootObject: self];
if (d != nil)
[pasteBoard setData: d forType: NSColorPboardType];
}
//
// Drawing
//
- (void) drawSwatchInRect: (NSRect)rect
{
[self set];
NSRectFill(rect);
}
- (void) set
{
// This is here to keep old code working
[[self colorUsingColorSpaceName: NSDeviceRGBColorSpace] set];
}
//
// NSCoding protocol
//
- (Class) classForCoder
{
return NSColorClass;
}
- (void) encodeWithCoder: (NSCoder*)aCoder
{
[self subclassResponsibility: _cmd];
}
- (id) initWithCoder: (NSCoder*)aDecoder
{
if ([aDecoder allowsKeyedCoding])
{
int colorSpace = [aDecoder decodeIntForKey: @"NSColorSpace"];
DESTROY(self);
if (colorSpace == 1)
{
unsigned length;
const uint8_t *data;
float red = 0.0;
float green = 0.0;
float blue = 0.0;
float alpha = 1.0;
NSString *str;
NSScanner *scanner;
if ([aDecoder containsValueForKey: @"NSRGB"])
{
data = [aDecoder decodeBytesForKey: @"NSRGB"
returnedLength: &length];
str = [[NSString alloc] initWithCString: data length: length];
scanner = [[NSScanner alloc] initWithString: str];
[scanner scanFloat: &red];
[scanner scanFloat: &green];
[scanner scanFloat: &blue];
RELEASE(scanner);
RELEASE(str);
}
self = [NSColor colorWithCalibratedRed: red
green: green
blue: blue
alpha: alpha];
}
else if (colorSpace == 3)
{
unsigned length;
const uint8_t *data;
float white = 0.0;
float alpha = 1.0;
NSString *str;
NSScanner *scanner;
if ([aDecoder containsValueForKey: @"NSWhite"])
{
data = [aDecoder decodeBytesForKey: @"NSWhite"
returnedLength: &length];
str = [[NSString alloc] initWithCString: data length: length];
scanner = [[NSScanner alloc] initWithString: str];
[scanner scanFloat: &white];
RELEASE(scanner);
RELEASE(str);
}
self = [NSColor colorWithDeviceWhite: white
alpha: alpha];
}
else if (colorSpace == 6)
{
NSString *catalog = [aDecoder decodeObjectForKey: @"NSCatalogName"];
NSString *name = [aDecoder decodeObjectForKey: @"NSColorName"];
//NSColor *color = [aDecoder decodeObjectForKey: @"NSColor"];
self = [NSColor colorWithCatalogName: catalog
colorName: name];
}
return self;
}
else if ([aDecoder versionForClassName: @"NSColor"] < 3)
{
float red;
float green;
float blue;
float cyan;
float magenta;
float yellow;
float black;
float hue;
float saturation;
float brightness;
float alpha;
float white;
int active_component;
int valid_components;
NSString *colorspace_name;
NSString *catalog_name;
NSString *color_name;
BOOL is_clear;
DESTROY(self);
// Version 1
[aDecoder decodeValueOfObjCType: @encode(float) at: &red];
[aDecoder decodeValueOfObjCType: @encode(float) at: &green];
[aDecoder decodeValueOfObjCType: @encode(float) at: &blue];
[aDecoder decodeValueOfObjCType: @encode(float) at: &alpha];
[aDecoder decodeValueOfObjCType: @encode(BOOL) at: &is_clear];
// Version 2
[aDecoder decodeValueOfObjCType: @encode(id) at: &colorspace_name];
[aDecoder decodeValueOfObjCType: @encode(id) at: &catalog_name];
[aDecoder decodeValueOfObjCType: @encode(id) at: &color_name];
[aDecoder decodeValueOfObjCType: @encode(float) at: &cyan];
[aDecoder decodeValueOfObjCType: @encode(float) at: &magenta];
[aDecoder decodeValueOfObjCType: @encode(float) at: &yellow];
[aDecoder decodeValueOfObjCType: @encode(float) at: &black];
[aDecoder decodeValueOfObjCType: @encode(float) at: &hue];
[aDecoder decodeValueOfObjCType: @encode(float) at: &saturation];
[aDecoder decodeValueOfObjCType: @encode(float) at: &brightness];
[aDecoder decodeValueOfObjCType: @encode(float) at: &white];
[aDecoder decodeValueOfObjCType: @encode(int) at: &active_component];
[aDecoder decodeValueOfObjCType: @encode(int) at: &valid_components];
if ([colorspace_name isEqualToString: @"NSDeviceCMYKColorSpace"])
{
self = [NSColorClass colorWithDeviceCyan: cyan
magenta: magenta
yellow: yellow
black: black
alpha: alpha];
}
else if ([colorspace_name isEqualToString: @"NSDeviceWhiteColorSpace"])
{
self = [NSColorClass colorWithDeviceWhite: white alpha: alpha];
}
else if ([colorspace_name isEqualToString:
@"NSCalibratedWhiteColorSpace"])
{
self = [NSColorClass colorWithCalibratedWhite:white alpha: alpha];
}
else if ([colorspace_name isEqualToString: @"NSDeviceRGBColorSpace"])
{
self = [NSColorClass colorWithDeviceRed: red
green: green
blue: blue
alpha: alpha];
}
else if ([colorspace_name isEqualToString: @"NSCalibratedRGBColorSpace"])
{
self = [NSColorClass colorWithCalibratedRed: red
green: green
blue: blue
alpha: alpha];
}
else if ([colorspace_name isEqualToString: @"NSNamedColorSpace"])
{
self = [NSColorClass colorWithCatalogName: catalog_name
colorName: color_name];
}
return RETAIN(self);
}
else
{
NSString *csName = [aDecoder decodeObject];
RELEASE(self);
if ([csName isEqualToString: @"NSDeviceCMYKColorSpace"])
{
self = [GSDeviceCMYKColor alloc];
}
else if ([csName isEqualToString: @"NSDeviceRGBColorSpace"])
{
self = [GSDeviceRGBColor alloc];
}
else if ([csName isEqualToString: @"NSDeviceWhiteColorSpace"])
{
self = [GSDeviceWhiteColor alloc];
}
else if ([csName isEqualToString: @"NSCalibratedWhiteColorSpace"])
{
self = [GSCalibratedWhiteColor alloc];
}
else if ([csName isEqualToString: @"NSCalibratedRGBColorSpace"])
{
self = [GSCalibratedRGBColor alloc];
}
else if ([csName isEqualToString: @"NSNamedColorSpace"])
{
self = [GSNamedColor alloc];
}
else
{
NSLog(@"Unknown colorspace name in decoded color");
return nil;
}
return [self initWithCoder: aDecoder];
}
}
@end
//
// Private methods
//
@implementation NSColor (GNUstepPrivate)
+ (NSColor*) colorFromString: (NSString*)str
{
if ([str hasPrefix: @"{"])
{
NSDictionary *dict;
NSString *space;
float alpha;
dict = [str propertyList];
if (dict == nil)
return nil;
if ((space = [dict objectForKey: @"ColorSpace"]) == nil)
return nil;
str = [dict objectForKey: @"Alpha"];
if (str == nil || [str isEqualToString: @""])
{
alpha = 1.0;
}
else
{
alpha = [str floatValue];
}
if ([space isEqual: NSCalibratedWhiteColorSpace])
{
float white = [[dict objectForKey: @"W"] floatValue];
return [self colorWithCalibratedWhite: white alpha: alpha];
}
if ([space isEqual: NSCalibratedBlackColorSpace])
{
float white = [[dict objectForKey: @"W"] floatValue];
return [self colorWithCalibratedWhite: white
alpha: alpha];
}
if ([space isEqual: NSCalibratedRGBColorSpace])
{
if ([dict objectForKey: @"H"] != nil)
{
float hue = [[dict objectForKey: @"H"] floatValue];
float saturation = [[dict objectForKey: @"S"] floatValue];
float brightness = [[dict objectForKey: @"B"] floatValue];
return [self colorWithCalibratedHue: hue
saturation: saturation
brightness: brightness
alpha: alpha];
}
else
{
float red = [[dict objectForKey: @"R"] floatValue];
float green = [[dict objectForKey: @"G"] floatValue];
float blue = [[dict objectForKey: @"B"] floatValue];
return [self colorWithCalibratedRed: red
green: green
blue: blue
alpha: alpha];
}
}
if ([space isEqual: NSDeviceCMYKColorSpace])
{
float cyan = [[dict objectForKey: @"C"] floatValue];
float magenta = [[dict objectForKey: @"M"] floatValue];
float yellow = [[dict objectForKey: @"Y"] floatValue];
float black = [[dict objectForKey: @"B"] floatValue];
return [self colorWithDeviceCyan: cyan
magenta: magenta
yellow: yellow
black: black
alpha: alpha];
}
if ([space isEqual: NSNamedColorSpace])
{
NSString *cat = [dict objectForKey: @"Catalog"];
NSString *col = [dict objectForKey: @"Color"];
return [self colorWithCatalogName: cat
colorName: col];
}
}
else if (str != nil)
{
float r, g, b;
NSScanner *scanner = [[NSScanner alloc] initWithString: str];
if ([scanner scanFloat: &r] &&
[scanner scanFloat: &g] &&
[scanner scanFloat: &b] &&
[scanner isAtEnd])
{
return [self colorWithCalibratedRed: r
green: g
blue: b
alpha: 1.0];
}
DESTROY(scanner);
}
return nil;
}
/*
* Go through all the names of system colors - for each color where
* there is a value in the defaults database, see if the current
* value of the color differs from the old one.
* Where there is a difference, update the color strings dictionary
* and update the system colors list to contain the new color.
* Finally, issue a notification if appropriate.
*/
+ (void) defaultsDidChange: (NSNotification*)notification
{
NSUserDefaults *defs;
NSEnumerator *enumerator;
NSString *key;
BOOL didChange = NO;
defs = [NSUserDefaults standardUserDefaults];
enumerator = [colorStrings keyEnumerator];
while ((key = [enumerator nextObject]) != nil)
{
NSString *def = [[defs objectForKey: key] description];
if (def != nil)
{
NSColor *old = [systemColors colorWithKey: key];
NSColor *color = [NSColor colorFromString: def];
if (color == nil)
{
NSLog(@"System color '%@' has bad string rep - '%@'\n",
key, def);
}
else if ([color isEqual: old] == NO)
{
didChange = YES;
[colorStrings setObject: def forKey: key];
[systemColors setColor: color forKey: key];
// Refresh the cache for this named colour
[[systemDict objectForKey: key] recache];
}
}
}
if (didChange)
{
[[NSNotificationCenter defaultCenter]
postNotificationName: NSSystemColorsDidChangeNotification object: nil];
}
}
@end
// Named colours
@implementation GSNamedColor
- (NSColor*) initWithCatalogName: (NSString *)listName
colorName: (NSString *)colorName
{
ASSIGN(_catalog_name, listName);
ASSIGN(_color_name, colorName);
return self;
}
- (void) dealloc
{
RELEASE(_catalog_name);
RELEASE(_color_name);
RELEASE(_cached_name_space);
RELEASE(_cached_color);
[super dealloc];
}
- (NSString *)colorSpaceName
{
return NSNamedColorSpace;
}
- (id) copyWithZone: (NSZone*)aZone
{
if (NSShouldRetainWithZone(self, aZone))
{
return RETAIN(self);
}
else
{
GSNamedColor *aCopy = NSCopyObject(self, 0, aZone);
aCopy->_catalog_name = [_catalog_name copyWithZone: aZone];
aCopy->_color_name = [_color_name copyWithZone: aZone];
aCopy->_cached_name_space = nil;
aCopy->_cached_color = nil;
return aCopy;
}
}
- (NSString*) description
{
NSMutableString *desc;
/*
* We encode information in a dictionary
* format with meaningful keys.
*/
desc = [NSMutableString stringWithCapacity: 128];
[desc appendFormat: @"{ ColorSpace = \"%@\";", [self colorSpaceName]];
[desc appendFormat: @" Catalog = \"%@\";", _catalog_name];
[desc appendFormat: @" Color = \"%@\"; }", _color_name];
return desc;
}
- (NSString *) catalogNameComponent
{
return _catalog_name;
}
- (NSString *) colorNameComponent
{
return _color_name;
}
- (NSString *) localizedCatalogNameComponent
{
// FIXME: How do we localize?
return NSLocalizedString(_catalog_name, @"colour list name");
}
- (NSString *) localizedColorNameComponent
{
// FIXME: How do we localize?
return NSLocalizedString(_color_name, @"colour name");
}
- (BOOL) isEqual: (id)other
{
if (other == self)
return YES;
if ([other isKindOfClass: [self class]] == NO)
return NO;
else
{
GSNamedColor *col = (GSNamedColor*)other;
if (![[col catalogNameComponent] isEqualToString: _catalog_name])
return NO;
if (![[col colorNameComponent] isEqualToString: _color_name])
return NO;
return YES;
}
return NO;
}
- (NSColor *)colorUsingColorSpaceName: (NSString *)colorSpace
device: (NSDictionary *)deviceDescription
{
NSColorList *list;
NSColor *real;
if (colorSpace == nil)
{
if (deviceDescription != nil)
colorSpace = [deviceDescription objectForKey: NSDeviceColorSpaceName];
// FIXME: If the deviceDescription is nil, we should get it from the
// current view or printer
if (colorSpace == nil)
colorSpace = NSCalibratedRGBColorSpace;
}
if ([colorSpace isEqualToString: [self colorSpaceName]])
{
return self;
}
// Is there a cache hit?
// FIXME How would we detect that the cache has become invalid by a
// change to the colour list?
if ([colorSpace isEqualToString: _cached_name_space])
{
return _cached_color;
}
list = [NSColorList colorListNamed: _catalog_name];
real = [list colorWithKey: _color_name];
ASSIGN(_cached_color, [real colorUsingColorSpaceName: colorSpace
device: deviceDescription]);
ASSIGN(_cached_name_space, colorSpace);
return _cached_color;
}
- (void) recache
{
DESTROY(_cached_name_space);
DESTROY(_cached_color);
}
//
// NSCoding protocol
//
- (void) encodeWithCoder: (NSCoder*)aCoder
{
[aCoder encodeObject: [self colorSpaceName]];
[aCoder encodeObject: _catalog_name];
[aCoder encodeObject: _color_name];
}
- (id) initWithCoder: (NSCoder*)aDecoder
{
[aDecoder decodeValueOfObjCType: @encode(id) at: &_catalog_name];
[aDecoder decodeValueOfObjCType: @encode(id) at: &_color_name];
return self;
}
@end
// Grayscale colours
@implementation GSWhiteColor
- (float) alphaComponent
{
return _alpha_component;
}
- (float) whiteComponent
{
return _white_component;
}
- (NSString*) description
{
NSMutableString *desc;
/*
* We encode information in a dictionary
* format with meaningful keys.
*/
desc = [NSMutableString stringWithCapacity: 128];
[desc appendFormat: @"{ ColorSpace = \"%@\";", [self colorSpaceName]];
[desc appendFormat: @" W = \"%f\";", _white_component];
[desc appendFormat: @" Alpha = \"%f\"; }", _alpha_component];
return desc;
}
- (void) getWhite: (float*)white
alpha: (float*)alpha
{
// Only set what is wanted
if (white)
*white = _white_component;
if (alpha)
*alpha = _alpha_component;
}
- (BOOL) isEqual: (id)other
{
if (other == self)
return YES;
if ([other isKindOfClass: [self class]] == NO)
return NO;
else
{
GSWhiteColor *col = (GSWhiteColor*)other;
if (col->_white_component != _white_component ||
col->_alpha_component != _alpha_component)
return NO;
return YES;
}
return NO;
}
- (NSColor*) colorWithAlphaComponent: (float)alpha
{
GSWhiteColor *aCopy;
if (alpha < 0.0) alpha = 0.0;
else if (alpha > 1.0) alpha = 1.0;
if (alpha == _alpha_component)
return self;
aCopy = (GSWhiteColor*)NSCopyObject(self, 0, NSDefaultMallocZone());
if (aCopy)
{
aCopy->_alpha_component = alpha;
}
return aCopy;
}
- (NSColor*) colorUsingColorSpaceName: (NSString *)colorSpace
device: (NSDictionary *)deviceDescription
{
if (colorSpace == nil)
{
if (deviceDescription != nil)
colorSpace = [deviceDescription objectForKey: NSDeviceColorSpaceName];
if (colorSpace == nil)
colorSpace = NSCalibratedRGBColorSpace;
}
if ([colorSpace isEqualToString: [self colorSpaceName]])
{
return self;
}
if ([colorSpace isEqualToString: NSNamedColorSpace])
{
// FIXME: We cannot convert to named color space.
return nil;
}
if ([colorSpace isEqualToString: NSDeviceWhiteColorSpace] ||
[colorSpace isEqualToString: NSDeviceBlackColorSpace])
{
return [NSColor colorWithDeviceWhite: _white_component
alpha: _alpha_component];
}
if ([colorSpace isEqualToString: NSCalibratedWhiteColorSpace] ||
[colorSpace isEqualToString: NSCalibratedBlackColorSpace])
{
return [NSColor colorWithCalibratedWhite: _white_component
alpha: _alpha_component];
}
if ([colorSpace isEqualToString: NSCalibratedRGBColorSpace])
{
return [NSColor colorWithCalibratedRed: _white_component
green: _white_component
blue: _white_component
alpha: _alpha_component];
}
if ([colorSpace isEqualToString: NSDeviceRGBColorSpace])
{
return [NSColor colorWithDeviceRed: _white_component
green: _white_component
blue: _white_component
alpha: _alpha_component];
}
if ([colorSpace isEqualToString: NSDeviceCMYKColorSpace])
{
return [NSColor colorWithDeviceCyan: 0.0
magenta: 0.0
yellow: 0.0
black: 1.0 - _white_component
alpha: _alpha_component];
}
return nil;
}
- (void) set
{
// This should be in GSDeviceWhiteColor, but is here to keep old code working
NSDebugLLog(@"NSColor", @"Gray %f\n", _white_component);
PSsetgray(_white_component);
// Should we check the ignore flag here?
PSsetalpha(_alpha_component);
}
//
// NSCoding protocol
//
- (void) encodeWithCoder: (NSCoder*)aCoder
{
[aCoder encodeObject: [self colorSpaceName]];
[aCoder encodeValueOfObjCType: @encode(float) at: &_white_component];
[aCoder encodeValueOfObjCType: @encode(float) at: &_alpha_component];
}
- (id) initWithCoder: (NSCoder*)aDecoder
{
[aDecoder decodeValueOfObjCType: @encode(float) at: &_white_component];
[aDecoder decodeValueOfObjCType: @encode(float) at: &_alpha_component];
return self;
}
@end
@implementation GSDeviceWhiteColor
- (NSString *)colorSpaceName
{
return NSDeviceWhiteColorSpace;
}
- (NSColor*) initWithDeviceWhite: (float)white
alpha: (float)alpha
{
if (white < 0.0) white = 0.0;
else if (white > 1.0) white = 1.0;
_white_component = white;
if (alpha < 0.0) alpha = 0.0;
else if (alpha > 1.0) alpha = 1.0;
_alpha_component = alpha;
return self;
}
@end
@implementation GSCalibratedWhiteColor
- (NSString *)colorSpaceName
{
return NSCalibratedWhiteColorSpace;
}
- (NSColor*) initWithCalibratedWhite: (float)white
alpha: (float)alpha
{
if (white < 0.0) white = 0.0;
else if (white > 1.0) white = 1.0;
_white_component = white;
if (alpha < 0.0) alpha = 0.0;
else if (alpha > 1.0) alpha = 1.0;
_alpha_component = alpha;
return self;
}
@end
@implementation GSDeviceCMYKColor
- (NSColor*) initWithDeviceCyan: (float)cyan
magenta: (float)magenta
yellow: (float)yellow
black: (float)black
alpha: (float)alpha
{
if (cyan < 0.0) cyan = 0.0;
else if (cyan > 1.0) cyan = 1.0;
_cyan_component = cyan;
if (magenta < 0.0) magenta = 0.0;
else if (magenta > 1.0) magenta = 1.0;
_magenta_component = magenta;
if (yellow < 0.0) yellow = 0.0;
else if (yellow > 1.0) yellow = 1.0;
_yellow_component = yellow;
if (black < 0.0) black = 0.0;
else if (black > 1.0) black = 1.0;
_black_component = black;
if (alpha < 0.0) alpha = 0.0;
else if (alpha > 1.0) alpha = 1.0;
_alpha_component = alpha;
return self;
}
- (NSString *)colorSpaceName
{
return NSDeviceCMYKColorSpace;
}
- (float) alphaComponent
{
return _alpha_component;
}
- (float) blackComponent
{
return _black_component;
}
- (float) cyanComponent
{
return _cyan_component;
}
- (float) magentaComponent
{
return _magenta_component;
}
- (float) yellowComponent
{
return _yellow_component;
}
- (NSString*) description
{
NSMutableString *desc;
/*
* We encode information in a dictionary
* format with meaningful keys.
*/
desc = [NSMutableString stringWithCapacity: 128];
[desc appendFormat: @"{ ColorSpace = \"%@\";", [self colorSpaceName]];
[desc appendFormat: @" C = \"%f\";", _cyan_component];
[desc appendFormat: @" M = \"%f\";", _magenta_component];
[desc appendFormat: @" Y = \"%f\";", _yellow_component];
[desc appendFormat: @" K = \"%f\";", _black_component];
[desc appendFormat: @" Alpha = \"%f\"; }", _alpha_component];
return desc;
}
- (void) getCyan: (float*)cyan
magenta: (float*)magenta
yellow: (float*)yellow
black: (float*)black
alpha: (float*)alpha
{
// Only set what is wanted
if (cyan)
*cyan = _cyan_component;
if (magenta)
*magenta = _magenta_component;
if (yellow)
*yellow = _yellow_component;
if (black)
*black = _black_component;
if (alpha)
*alpha = _alpha_component;
}
- (BOOL) isEqual: (id)other
{
if (other == self)
return YES;
if ([other isKindOfClass: [self class]] == NO)
return NO;
else
{
GSDeviceCMYKColor *col = (GSDeviceCMYKColor*)other;
if (col->_cyan_component != _cyan_component ||
col->_magenta_component != _magenta_component ||
col->_yellow_component != _yellow_component ||
col->_black_component != _black_component ||
col->_alpha_component != _alpha_component)
return NO;
return YES;
}
return NO;
}
- (NSColor*) colorWithAlphaComponent: (float)alpha
{
GSDeviceCMYKColor *aCopy;
if (alpha < 0.0) alpha = 0.0;
else if (alpha > 1.0) alpha = 1.0;
if (alpha == _alpha_component)
return self;
aCopy = (GSDeviceCMYKColor*)NSCopyObject(self, 0, NSDefaultMallocZone());
if (aCopy)
{
aCopy->_alpha_component = alpha;
}
return aCopy;
}
- (NSColor*) colorUsingColorSpaceName: (NSString *)colorSpace
device: (NSDictionary *)deviceDescription
{
if (colorSpace == nil)
{
if (deviceDescription != nil)
colorSpace = [deviceDescription objectForKey: NSDeviceColorSpaceName];
if (colorSpace == nil)
colorSpace = NSCalibratedRGBColorSpace;
}
if ([colorSpace isEqualToString: [self colorSpaceName]])
{
return self;
}
if ([colorSpace isEqualToString: NSNamedColorSpace])
{
// FIXME: We cannot convert to named color space.
return nil;
}
if ([colorSpace isEqualToString: NSCalibratedRGBColorSpace])
{
double c = _cyan_component;
double m = _magenta_component;
double y = _yellow_component;
double white = 1 - _black_component;
return [NSColor colorWithCalibratedRed: (c > white ? 0 : white - c)
green: (m > white ? 0 : white - m)
blue: (y > white ? 0 : white - y)
alpha: _alpha_component];
}
if ([colorSpace isEqualToString: NSDeviceRGBColorSpace])
{
double c = _cyan_component;
double m = _magenta_component;
double y = _yellow_component;
double white = 1 - _black_component;
return [NSColor colorWithDeviceRed: (c > white ? 0 : white - c)
green: (m > white ? 0 : white - m)
blue: (y > white ? 0 : white - y)
alpha: _alpha_component];
}
if ([colorSpace isEqualToString: NSCalibratedWhiteColorSpace] ||
[colorSpace isEqualToString: NSCalibratedBlackColorSpace])
{
return [NSColor colorWithCalibratedWhite: 1 - _black_component -
(_cyan_component + _magenta_component + _yellow_component)/3
alpha: _alpha_component];
}
if ([colorSpace isEqualToString: NSDeviceWhiteColorSpace] ||
[colorSpace isEqualToString: NSDeviceBlackColorSpace])
{
return [NSColor colorWithDeviceWhite: 1 - _black_component -
(_cyan_component + _magenta_component + _yellow_component)/3
alpha: _alpha_component];
}
return nil;
}
- (void) set
{
NSDebugLLog(@"NSColor", @"CMYK %f %f %f %f\n",
_cyan_component, _magenta_component,
_yellow_component, _black_component);
PSsetcmykcolor(_cyan_component, _magenta_component,
_yellow_component, _black_component);
// Should we check the ignore flag here?
PSsetalpha(_alpha_component);
}
//
// NSCoding protocol
//
- (void) encodeWithCoder: (NSCoder*)aCoder
{
[aCoder encodeObject: [self colorSpaceName]];
[aCoder encodeValueOfObjCType: @encode(float) at: &_cyan_component];
[aCoder encodeValueOfObjCType: @encode(float) at: &_magenta_component];
[aCoder encodeValueOfObjCType: @encode(float) at: &_yellow_component];
[aCoder encodeValueOfObjCType: @encode(float) at: &_black_component];
[aCoder encodeValueOfObjCType: @encode(float) at: &_alpha_component];
}
- (id) initWithCoder: (NSCoder*)aDecoder
{
[aDecoder decodeValueOfObjCType: @encode(float) at: &_cyan_component];
[aDecoder decodeValueOfObjCType: @encode(float) at: &_magenta_component];
[aDecoder decodeValueOfObjCType: @encode(float) at: &_yellow_component];
[aDecoder decodeValueOfObjCType: @encode(float) at: &_black_component];
[aDecoder decodeValueOfObjCType: @encode(float) at: &_alpha_component];
return self;
}
@end
// RGB/HSB colours
@implementation GSRGBColor
- (float) alphaComponent
{
return _alpha_component;
}
- (float) redComponent
{
return _red_component;
}
- (float) greenComponent
{
return _green_component;
}
- (float) blueComponent
{
return _blue_component;
}
- (float) hueComponent
{
return _hue_component;
}
- (float) saturationComponent
{
return _saturation_component;
}
- (float) brightnessComponent
{
return _brightness_component;
}
- (void) getHue: (float*)hue
saturation: (float*)saturation
brightness: (float*)brightness
alpha: (float*)alpha
{
// Only set what is wanted
if (hue)
*hue = _hue_component;
if (saturation)
*saturation = _saturation_component;
if (brightness)
*brightness = _brightness_component;
if (alpha)
*alpha = _alpha_component;
}
- (void) getRed: (float*)red
green: (float*)green
blue: (float*)blue
alpha: (float*)alpha
{
// Only set what is wanted
if (red)
*red = _red_component;
if (green)
*green = _green_component;
if (blue)
*blue = _blue_component;
if (alpha)
*alpha = _alpha_component;
}
- (BOOL) isEqual: (id)other
{
if (other == self)
return YES;
if ([other isKindOfClass: [self class]] == NO)
return NO;
else
{
GSRGBColor *col = (GSRGBColor*)other;
if (col->_red_component != _red_component
|| col->_green_component != _green_component
|| col->_blue_component != _blue_component)
return NO;
return YES;
}
return NO;
}
- (NSColor*) colorWithAlphaComponent: (float)alpha
{
GSRGBColor *aCopy;
if (alpha < 0.0) alpha = 0.0;
else if (alpha > 1.0) alpha = 1.0;
if (alpha == _alpha_component)
return self;
aCopy = (GSRGBColor*)NSCopyObject(self, 0, NSDefaultMallocZone());
if (aCopy)
{
aCopy->_alpha_component = alpha;
}
return aCopy;
}
- (NSColor*) colorUsingColorSpaceName: (NSString *)colorSpace
device: (NSDictionary *)deviceDescription
{
if (colorSpace == nil)
{
if (deviceDescription != nil)
colorSpace = [deviceDescription objectForKey: NSDeviceColorSpaceName];
if (colorSpace == nil)
colorSpace = NSCalibratedRGBColorSpace;
}
if ([colorSpace isEqualToString: [self colorSpaceName]])
{
return self;
}
if ([colorSpace isEqualToString: NSNamedColorSpace])
{
// FIXME: We cannot convert to named color space.
return nil;
}
if ([colorSpace isEqualToString: NSCalibratedRGBColorSpace])
{
return [NSColor colorWithCalibratedRed: _red_component
green: _green_component
blue: _blue_component
alpha: _alpha_component];
}
if ([colorSpace isEqualToString: NSDeviceRGBColorSpace])
{
return [NSColor colorWithDeviceRed: _red_component
green: _green_component
blue: _blue_component
alpha: _alpha_component];
}
if ([colorSpace isEqualToString: NSCalibratedWhiteColorSpace] ||
[colorSpace isEqualToString: NSCalibratedBlackColorSpace])
{
return [NSColor colorWithCalibratedWhite:
(_red_component + _green_component + _blue_component)/3
alpha: _alpha_component];
}
if ([colorSpace isEqualToString: NSDeviceWhiteColorSpace] ||
[colorSpace isEqualToString: NSDeviceBlackColorSpace])
{
return [NSColor colorWithDeviceWhite:
(_red_component + _green_component + _blue_component)/3
alpha: _alpha_component];
}
if ([colorSpace isEqualToString: NSDeviceCMYKColorSpace])
{
return [NSColor colorWithDeviceCyan: 1 - _red_component
magenta: 1 - _green_component
yellow: 1 - _blue_component
black: 0.0
alpha: _alpha_component];
}
return nil;
}
- (NSString*) description
{
NSMutableString *desc;
/*
* For a simple RGB color without alpha, we use a shorthand description
* consisting of the three component values in a quoted string.
*/
if (_alpha_component == 1.0)
return [NSString stringWithFormat: @"%f %f %f",
_red_component, _green_component, _blue_component];
/*
* For more complex color values - we encode information in a dictionary
* format with meaningful keys.
*/
desc = [NSMutableString stringWithCapacity: 128];
[desc appendFormat: @"{ ColorSpace = \"%@\";", [self colorSpaceName]];
[desc appendFormat: @" R = \"%f\";", _red_component];
[desc appendFormat: @" G = \"%f\";", _green_component];
[desc appendFormat: @" B = \"%f\";", _blue_component];
[desc appendFormat: @" Alpha = \"%f\"; }", _alpha_component];
return desc;
}
- (void) set
{
// This should only be in GSDeviceRGBColor, but is here to keep old code working.
NSDebugLLog(@"NSColor", @"RGB %f %f %f\n", _red_component,
_green_component, _blue_component);
PSsetrgbcolor(_red_component, _green_component,
_blue_component);
// Should we check the ignore flag here?
PSsetalpha(_alpha_component);
}
//
// NSCoding protocol
//
- (void) encodeWithCoder: (NSCoder*)aCoder
{
[aCoder encodeObject: [self colorSpaceName]];
[aCoder encodeValueOfObjCType: @encode(float) at: &_red_component];
[aCoder encodeValueOfObjCType: @encode(float) at: &_green_component];
[aCoder encodeValueOfObjCType: @encode(float) at: &_blue_component];
[aCoder encodeValueOfObjCType: @encode(float) at: &_hue_component];
[aCoder encodeValueOfObjCType: @encode(float) at: &_saturation_component];
[aCoder encodeValueOfObjCType: @encode(float) at: &_brightness_component];
[aCoder encodeValueOfObjCType: @encode(float) at: &_alpha_component];
}
- (id) initWithCoder: (NSCoder*)aDecoder
{
[aDecoder decodeValueOfObjCType: @encode(float) at: &_red_component];
[aDecoder decodeValueOfObjCType: @encode(float) at: &_green_component];
[aDecoder decodeValueOfObjCType: @encode(float) at: &_blue_component];
[aDecoder decodeValueOfObjCType: @encode(float) at: &_hue_component];
[aDecoder decodeValueOfObjCType: @encode(float) at: &_saturation_component];
[aDecoder decodeValueOfObjCType: @encode(float) at: &_brightness_component];
[aDecoder decodeValueOfObjCType: @encode(float) at: &_alpha_component];
return self;
}
@end
@implementation GSDeviceRGBColor
- (NSString *)colorSpaceName
{
return NSDeviceRGBColorSpace;
}
- (NSColor*) initWithDeviceRed: (float)red
green: (float)green
blue: (float)blue
alpha: (float)alpha
{
if (red < 0.0) red = 0.0;
else if (red > 1.0) red = 1.0;
_red_component = red;
if (green < 0.0) green = 0.0;
else if (green > 1.0) green = 1.0;
_green_component = green;
if (blue < 0.0) blue = 0.0;
else if (blue > 1.0) blue = 1.0;
_blue_component = blue;
{
float r = _red_component;
float g = _green_component;
float b = _blue_component;
if (r == g && r == b)
{
_hue_component = 0;
_saturation_component = 0;
_brightness_component = r;
}
else
{
double H;
double V;
double Temp;
double diff;
V = (r > g ? r : g);
V = (b > V ? b : V);
Temp = (r < g ? r : g);
Temp = (b < Temp ? b : Temp);
diff = V - Temp;
if (V == r)
{
H = (g - b)/diff;
}
else if (V == g)
{
H = (b - r)/diff + 2;
}
else
{
H = (r - g)/diff + 4;
}
if (H < 0)
{
H += 6;
}
_hue_component = H/6;
_saturation_component = diff/V;
_brightness_component = V;
}
}
if (alpha < 0.0) alpha = 0.0;
else if (alpha > 1.0) alpha = 1.0;
_alpha_component = alpha;
return self;
}
- (NSColor*) initWithDeviceHue: (float)hue
saturation: (float)saturation
brightness: (float)brightness
alpha: (float)alpha;
{
if (hue < 0.0) hue = 0.0;
else if (hue > 1.0) hue = 1.0;
_hue_component = hue;
if (saturation < 0.0) saturation = 0.0;
else if (saturation > 1.0) saturation = 1.0;
_saturation_component = saturation;
if (brightness < 0.0) brightness = 0.0;
else if (brightness > 1.0) brightness = 1.0;
_brightness_component = brightness;
{
int I = (int)(hue * 6);
double V = brightness;
double S = saturation;
double F = (hue * 6) - I;
double M = V * (1 - S);
double N = V * (1 - S * F);
double K = M - N + V;
double R, G, B;
switch (I)
{
default: R = V; G = K; B = M; break;
case 1: R = N; G = V; B = M; break;
case 2: R = M; G = V; B = K; break;
case 3: R = M; G = N; B = V; break;
case 4: R = K; G = M; B = V; break;
case 5: R = V; G = M; B = N; break;
}
_red_component = (float)R;
_green_component = (float)G;
_blue_component = (float)B;
}
if (alpha < 0.0) alpha = 0.0;
else if (alpha > 1.0) alpha = 1.0;
_alpha_component = alpha;
return self;
}
@end
@implementation GSCalibratedRGBColor
- (NSString *)colorSpaceName
{
return NSCalibratedRGBColorSpace;
}
- (NSColor*) initWithCalibratedRed: (float)red
green: (float)green
blue: (float)blue
alpha: (float)alpha
{
if (red < 0.0) red = 0.0;
else if (red > 1.0) red = 1.0;
_red_component = red;
if (green < 0.0) green = 0.0;
else if (green > 1.0) green = 1.0;
_green_component = green;
if (blue < 0.0) blue = 0.0;
else if (blue > 1.0) blue = 1.0;
_blue_component = blue;
{
float r = _red_component;
float g = _green_component;
float b = _blue_component;
if (r == g && r == b)
{
_hue_component = 0;
_saturation_component = 0;
_brightness_component = r;
}
else
{
double H;
double V;
double Temp;
double diff;
V = (r > g ? r : g);
V = (b > V ? b : V);
Temp = (r < g ? r : g);
Temp = (b < Temp ? b : Temp);
diff = V - Temp;
if (V == r)
{
H = (g - b)/diff;
}
else if (V == g)
{
H = (b - r)/diff + 2;
}
else
{
H = (r - g)/diff + 4;
}
if (H < 0)
{
H += 6;
}
_hue_component = H/6;
_saturation_component = diff/V;
_brightness_component = V;
}
}
if (alpha < 0.0) alpha = 0.0;
else if (alpha > 1.0) alpha = 1.0;
_alpha_component = alpha;
return self;
}
- (NSColor*) initWithCalibratedHue: (float)hue
saturation: (float)saturation
brightness: (float)brightness
alpha: (float)alpha;
{
if (hue < 0.0) hue = 0.0;
else if (hue > 1.0) hue = 1.0;
_hue_component = hue;
if (saturation < 0.0) saturation = 0.0;
else if (saturation > 1.0) saturation = 1.0;
_saturation_component = saturation;
if (brightness < 0.0) brightness = 0.0;
else if (brightness > 1.0) brightness = 1.0;
_brightness_component = brightness;
{
int I = (int)(hue * 6);
double V = brightness;
double S = saturation;
double F = (hue * 6) - I;
double M = V * (1 - S);
double N = V * (1 - S * F);
double K = M - N + V;
double R, G, B;
switch (I)
{
default: R = V; G = K; B = M; break;
case 1: R = N; G = V; B = M; break;
case 2: R = M; G = V; B = K; break;
case 3: R = M; G = N; B = V; break;
case 4: R = K; G = M; B = V; break;
case 5: R = V; G = M; B = N; break;
}
_red_component = (float)R;
_green_component = (float)G;
_blue_component = (float)B;
}
if (alpha < 0.0) alpha = 0.0;
else if (alpha > 1.0) alpha = 1.0;
_alpha_component = alpha;
return self;
}
@end
@implementation GSPatternColor
- (NSColor*) initWithPatternImage: (NSImage*) pattern;
{
ASSIGN(_pattern, pattern);
return self;
}
- (void) dealloc
{
RELEASE(_pattern);
[super dealloc];
}
- (NSString *)colorSpaceName
{
return NSPatternColorSpace;
}
- (NSImage*) patternImage
{
return _pattern;
}
- (NSString*) description
{
NSMutableString *desc;
/*
* We encode information in a dictionary
* format with meaningful keys.
*/
desc = [NSMutableString stringWithCapacity: 128];
[desc appendFormat: @"{ ColorSpace = \"%@\";", [self colorSpaceName]];
[desc appendFormat: @" Pattern = \"%@\"; }", [_pattern description]];
return desc;
}
- (BOOL) isEqual: (id)other
{
if (other == self)
return YES;
if ([other isKindOfClass: [self class]] == NO)
return NO;
else
{
GSPatternColor *col = (GSPatternColor*)other;
if ([col->_pattern isEqual: _pattern] == NO)
return NO;
return YES;
}
return NO;
}
- (id) copyWithZone: (NSZone*)aZone
{
if (NSShouldRetainWithZone(self, aZone))
{
return RETAIN(self);
}
else
{
GSPatternColor *aCopy = NSCopyObject(self, 0, aZone);
aCopy->_pattern = [_pattern copyWithZone: aZone];
return aCopy;
}
}
- (void) set
{
// FIXME: We need another PS command for this
}
//
// NSCoding protocol
//
- (void) encodeWithCoder: (NSCoder*)aCoder
{
[aCoder encodeObject: [self colorSpaceName]];
[aCoder encodeObject: _pattern];
}
- (id) initWithCoder: (NSCoder*)aDecoder
{
[aDecoder decodeValueOfObjCType: @encode(id) at: &_pattern];
return self;
}
@end
//
// Implementation of the NSCoder additions
//
@implementation NSCoder (NSCoderAdditions)
//
// Converting an archived NXColor to an NSColor
//
- (NSColor*) decodeNXColor
{
// FIXME
return nil;
}
@end
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