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792 lines
23 KiB
Plaintext
792 lines
23 KiB
Plaintext
/*
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* CPColor.j
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* AppKit
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*
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* Created by Francisco Tolmasky.
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* Copyright 2008, 280 North, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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@import <Foundation/CPObject.j>
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@import "CGColor.j"
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@import "CPCompatibility.j"
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@import "CPImage.j"
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var _redComponent = 0,
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_greenComponent = 1,
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_blueComponent = 2,
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_alphaCompnent = 3;
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var _hueComponent = 0,
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_saturationComponent = 1,
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_brightnessComponent = 2;
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var cachedBlackColor,
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cachedRedColor,
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cachedGreenColor,
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cachedBlueColor,
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cachedYellowColor,
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cachedGrayColor,
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cachedLightGrayColor,
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cachedDarkGrayColor,
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cachedWhiteColor,
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cachedBrownColor,
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cachedCyanColor,
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cachedMagentaColor,
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cachedOrangeColor,
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cachedPurpleColor,
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cachedShadowColor,
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cachedClearColor;
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/*!
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@ingroup appkit
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@code CPColor
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\c CPColor can be used to represent color
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in an RGB or HSB model with an optional transparency value.</p>
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<p>It also provides some class helper methods that
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returns instances of commonly used colors.</p>
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<p>The class does not have a \c -set: method
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like NextStep based frameworks to change the color of
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the current context. To change the color of the current
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context, use CGContextSetFillColor().
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*/
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@implementation CPColor : CPObject
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{
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CPArray _components;
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CPImage _patternImage;
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CPString _cssString;
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}
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/*!
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Creates a color in the RGB color space, with an alpha value.
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Each component should be between the range of 0.0 to 1.0. For
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the alpha component, a value of 1.0 is opaque, and 0.0 means
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completely transparent.
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@param red the red component of the color
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@param green the green component of the color
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@param blue the blue component of the color
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@param alpha the alpha component
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@return a color initialized to the values specified
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*/
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+ (CPColor)colorWithRed:(float)red green:(float)green blue:(float)blue alpha:(float)alpha
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{
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return [[CPColor alloc] _initWithRGBA:[red, green, blue, alpha]];
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}
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/*!
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@deprecated in favor of colorWithRed:green:blue:alpha:
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Creates a color in the RGB color space, with an alpha value.
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Each component should be between the range of 0.0 to 1.0. For
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the alpha component, a value of 1.0 is opaque, and 0.0 means
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completely transparent.
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@param red the red component of the color
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@param green the green component of the color
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@param blue the blue component of the color
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@param alpha the alpha component
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@return a color initialized to the values specified
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*/
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+ (CPColor)colorWithCalibratedRed:(float)red green:(float)green blue:(float)blue alpha:(float)alpha
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{
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return [self colorWithRed:red green:green blue:blue alpha:alpha];
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}
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/*!
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Creates a new color object with \c white for the RGB components.
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For the alpha component, a value of 1.0 is opaque, and 0.0 means completely transparent.
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@param white a float between 0.0 and 1.0
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@param alpha the alpha component between 0.0 and 1.0
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@return a color initialized to the values specified
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*/
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+ (CPColor)colorWithWhite:(float)white alpha:(float)alpha
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{
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return [[CPColor alloc] _initWithRGBA:[white, white, white, alpha]];
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}
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/*!
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@deprecated in favor of colorWithWhite:apha:
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Creates a new color object with \c white for the RGB components.
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For the alpha component, a value of 1.0 is opaque, and 0.0 means completely transparent.
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@param white a float between 0.0 and 1.0
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@param alpha the alpha component between 0.0 and 1.0
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@return a color initialized to the values specified
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*/
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+ (CPColor)colorWithCalibratedWhite:(float)white alpha:(float)alpha
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{
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return [self colorWithWhite:white alpha:alpha];
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}
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/*!
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Creates a new color in HSB space.
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@param hue the hue value
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@param saturation the saturation value
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@param brightness the brightness value
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@return the initialized color
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*/
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+ (CPColor)colorWithHue:(float)hue saturation:(float)saturation brightness:(float)brightness
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{
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return [self colorWithHue:hue saturation:saturation brightness:brightness alpha:1.0];
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}
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+ (CPColor)colorWithHue:(float)hue saturation:(float)saturation brightness:(float)brightness alpha:(float)alpha
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{
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if(saturation === 0.0)
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return [CPColor colorWithCalibratedWhite:brightness / 100.0 alpha:alpha];
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var f = hue % 60,
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p = (brightness * (100 - saturation)) / 10000,
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q = (brightness * (6000 - saturation * f)) / 600000,
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t = (brightness * (6000 - saturation * (60 -f))) / 600000,
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b = brightness / 100.0;
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switch(FLOOR(hue / 60))
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{
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case 0: return [CPColor colorWithCalibratedRed: b green: t blue: p alpha: alpha];
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case 1: return [CPColor colorWithCalibratedRed: q green: b blue: p alpha: alpha];
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case 2: return [CPColor colorWithCalibratedRed: p green: b blue: t alpha: alpha];
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case 3: return [CPColor colorWithCalibratedRed: p green: q blue: b alpha: alpha];
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case 4: return [CPColor colorWithCalibratedRed: t green: p blue: b alpha: alpha];
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case 5: return [CPColor colorWithCalibratedRed: b green: p blue: q alpha: alpha];
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}
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}
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/*!
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Creates an RGB color from a hexadecimal string. For example,
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the a string of "FFFFFF" would return a white CPColor.
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"FF0000" would return a pure red, "00FF00" would return a
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pure blue, and "0000FF" would return a pure green.
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@param hex a 6 character long string of hex
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@return an initialized RGB color
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*/
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+ (CPColor)colorWithHexString:(string)hex
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{
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return [[CPColor alloc] _initWithRGBA: hexToRGB(hex)];
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}
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/*!
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Returns a black color object. (RGBA=[0.0, 0.0, 0.0, 1.0])
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*/
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+ (CPColor)blackColor
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{
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if (!cachedBlackColor)
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cachedBlackColor = [[CPColor alloc] _initWithRGBA:[0.0, 0.0, 0.0, 1.0]];
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return cachedBlackColor;
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}
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/*!
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Returns a blue color object. (RGBA=[0.0, 0.0, 1.0, 1.0])
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*/
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+ (CPColor)blueColor
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{
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if (!cachedBlueColor)
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cachedBlueColor = [[CPColor alloc] _initWithRGBA:[0.0, 0.0, 1.0, 1.0]];
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return cachedBlueColor;
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}
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/*!
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Returns a dark gray color object. (RGBA=[0.33 ,0.33, 0.33, 1.0])
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*/
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+ (CPColor)darkGrayColor
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{
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if (!cachedDarkGrayColor)
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cachedDarkGrayColor = [CPColor colorWithCalibratedWhite:1.0 / 3.0 alpha:1.0];
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return cachedDarkGrayColor;
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}
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/*!
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Returns a gray color object. (RGBA=[0.5, 0.5, 0.5, 1.0])
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*/
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+ (CPColor)grayColor
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{
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if (!cachedGrayColor)
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cachedGrayColor = [CPColor colorWithCalibratedWhite:0.5 alpha: 1.0];
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return cachedGrayColor;
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}
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/*!
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Returns a green color object. (RGBA=[0.0, 1.0, 0.0, 1.0])
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*/
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+ (CPColor)greenColor
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{
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if (!cachedGreenColor)
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cachedGreenColor = [[CPColor alloc] _initWithRGBA:[0.0, 1.0, 0.0, 1.0]];
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return cachedGreenColor;
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}
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/*!
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Returns a light gray color object (RGBA=[0.66, 0.66, 0.66, 1.0])
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*/
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+ (CPColor)lightGrayColor
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{
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if (!cachedLightGrayColor)
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cachedLightGrayColor = [CPColor colorWithCalibratedWhite:2.0 / 3.0 alpha:1.0];
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return cachedLightGrayColor;
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}
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/*!
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Returns a red color object (RGBA=[1.0, 0.0, 0.0, 1.0])
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*/
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+ (CPColor)redColor
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{
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if (!cachedRedColor)
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cachedRedColor = [[CPColor alloc] _initWithRGBA:[1.0, 0.0, 0.0, 1.0]];
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return cachedRedColor;
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}
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/*!
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Returns a white color object (RGBA=[1.0, 1.0, 1.0, 1.0])
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*/
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+ (CPColor)whiteColor
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{
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if (!cachedWhiteColor)
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cachedWhiteColor = [[CPColor alloc] _initWithRGBA:[1.0, 1.0, 1.0, 1.0]];
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return cachedWhiteColor;
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}
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/*!
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Returns a yellow color object (RGBA=[1.0, 1.0, 0.0, 1.0])
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*/
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+ (CPColor)yellowColor
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{
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if (!cachedYellowColor)
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cachedYellowColor = [[CPColor alloc] _initWithRGBA:[1.0, 1.0, 0.0, 1.0]];
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return cachedYellowColor;
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}
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/*!
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Returns a brown color object (RGBA=[0.6, 0.4, 0.2, 1.0])
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*/
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+ (CPColor)brownColor
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{
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if (!cachedBrownColor)
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cachedBrownColor = [[CPColor alloc] _initWithRGBA:[0.6, 0.4, 0.2, 1.0]];
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return cachedBrownColor;
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}
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/*!
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Returns a cyan color object (RGBA=[0.0, 1.0, 1.0, 1.0])
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*/
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+ (CPColor)cyanColor
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{
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if (!cachedCyanColor)
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cachedCyanColor = [[CPColor alloc] _initWithRGBA:[0.0, 1.0, 1.0, 1.0]];
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return cachedCyanColor;
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}
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/*!
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Returns a magenta color object (RGBA=[1.0, 0.0, 1.0, 1.0])
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*/
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+ (CPColor)magentaColor
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{
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if (!cachedMagentaColor)
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cachedMagentaColor = [[CPColor alloc] _initWithRGBA:[1.0, 0.0, 1.0, 1.0]];
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return cachedMagentaColor;
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}
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/*!
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Returns a orange color object (RGBA=[1.0, 0.5, 0.0, 1.0])
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*/
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+ (CPColor)orangeColor
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{
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if (!cachedOrangeColor)
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cachedOrangeColor = [[CPColor alloc] _initWithRGBA:[1.0, 0.5, 0.0, 1.0]];
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return cachedOrangeColor;
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}
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/*!
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Returns a purple color object (RGBA=[0.5, 0.0, 0.5, 1.0])
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*/
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+ (CPColor)purpleColor
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{
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if (!cachedPurpleColor)
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cachedPurpleColor = [[CPColor alloc] _initWithRGBA:[0.5, 0.0, 0.5, 1.0]];
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return cachedPurpleColor;
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}
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/*!
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Returns a shadow looking color (RGBA=[0.0, 0.0, 0.0, 0.33])
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*/
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+ (CPColor)shadowColor
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{
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if (!cachedShadowColor)
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cachedShadowColor = [[CPColor alloc] _initWithRGBA:[0.0, 0.0, 0.0, 1.0 / 3.0]];
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return cachedShadowColor;
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}
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/*!
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Returns a clear color (RGBA=[0.0, 0.0, 0.0, 0.0])
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*/
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+ (CPColor)clearColor
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{
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if (!cachedClearColor)
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cachedClearColor = [self colorWithCalibratedWhite:0.0 alpha:0.0];
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return cachedClearColor;
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}
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+ (CPColor)alternateSelectedControlColor
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{
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return [[CPColor alloc] _initWithRGBA:[0.22, 0.46, 0.84, 1.0]];
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}
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+ (CPColor)secondarySelectedControlColor
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{
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return [[CPColor alloc] _initWithRGBA:[0.83, 0.83, 0.83, 1.0]];
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}
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/*!
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Creates a color using a tile pattern with \c anImage
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@param the image to tile
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@return a tiled image color object
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*/
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+ (CPColor)colorWithPatternImage:(CPImage)anImage
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{
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return [[CPColor alloc] _initWithPatternImage:anImage];
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}
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/*!
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Creates a CPColor from a valid CSS RGB string. Example, "rgb(32,64,129)".
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@param aString a CSS color string
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@return a color initialized to the value in the css string
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*/
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+ (CPColor)colorWithCSSString:(CPString)aString
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{
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return [[CPColor alloc] _initWithCSSString: aString];
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}
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/* @ignore */
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- (id)_initWithCSSString:(CPString)aString
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{
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if(aString.indexOf("rgb") == CPNotFound)
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return nil;
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self = [super init];
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var startingIndex = aString.indexOf("(");
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var parts = aString.substring(startingIndex+1).split(',');
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_components = [
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parseInt(parts[0], 10) / 255.0,
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parseInt(parts[1], 10) / 255.0,
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parseInt(parts[2], 10) / 255.0,
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parts[3] ? parseInt(parts[3], 10) / 255.0 : 1.0
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]
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_cssString = aString;
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return self;
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}
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/* @ignore */
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- (id)_initWithRGBA:(CPArray)components
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{
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self = [super init];
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if (self)
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{
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_components = components;
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if (!CPFeatureIsCompatible(CPCSSRGBAFeature) && _components[3] != 1.0 && window.Base64 && window.CRC32)
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{
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var bytes = [0x89,0x50,0x4e,0x47,0xd,0xa,0x1a,0xa,0x0,0x0,0x0,0xd,0x49,0x48,0x44,0x52,0x0,0x0,0x0,0x1,0x0,0x0,0x0,0x1,0x8,0x3,0x0,0x0,0x0,0x28,0xcb,0x34,0xbb,0x0,0x0,0x3,0x0,0x50,0x4c,0x54,0x45,0xff,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x17,0x89,0x99,0x55,0x0,0x0,0x0,0x1,0x74,0x52,0x4e,0x53,0x0,0x40,0xe6,0xd8,0x66,0x0,0x0,0x0,0x10,0x49,0x44,0x41,0x54,0x78,0xda,0x62,0x60,0x0,0x0,0x0,0x0,0xff,0xff,0x3,0x0,0x0,0x2,0x0,0x1,0x24,0x7f,0x24,0xf1,0x0,0x0,0x0,0x0,0x49,0x45,0x4e,0x44,0xae,0x42,0x60,0x82,0xff];
|
|
var r_off = 41;
|
|
var g_off = 42;
|
|
var b_off = 43;
|
|
var a_off = 821;
|
|
var plte_crc_off = 809;
|
|
var trns_crc_off = 822;
|
|
var plte_type_off = 37;
|
|
var trns_type_off = 817;
|
|
|
|
bytes[r_off] = Math.round(_components[0]*255);
|
|
bytes[g_off] = Math.round(_components[1]*255);
|
|
bytes[b_off] = Math.round(_components[2]*255);
|
|
bytes[a_off] = Math.round(_components[3]*255);
|
|
|
|
// calculate new CRCs
|
|
var new_plte_crc = integerToBytes(CRC32.getCRC(bytes, plte_type_off, 4+768), 4);
|
|
var new_trns_crc = integerToBytes(CRC32.getCRC(bytes, trns_type_off, 4+1), 4);
|
|
|
|
// overwrite old CRCs with new ones
|
|
for (var i = 0; i < 4; i++)
|
|
{
|
|
bytes[plte_crc_off+i] = new_plte_crc[i];
|
|
bytes[trns_crc_off+i] = new_trns_crc[i];
|
|
}
|
|
|
|
// Base64 encode, strip whitespace and build data URL
|
|
var base64image = Base64.encode(bytes); //.replace(/[\s]/g, "");
|
|
|
|
_cssString = "url(\"data:image/png;base64," + base64image + "\")";
|
|
}
|
|
else
|
|
{
|
|
var hasAlpha = CPFeatureIsCompatible(CPCSSRGBAFeature) && _components[3] != 1.0;
|
|
|
|
_cssString = (hasAlpha ? "rgba(" : "rgb(") +
|
|
parseInt(_components[0] * 255.0) + ", " +
|
|
parseInt(_components[1] * 255.0) + ", " +
|
|
parseInt(_components[2] * 255.0) +
|
|
(hasAlpha ? (", " + _components[3]) : "") + ")";
|
|
}
|
|
}
|
|
return self;
|
|
}
|
|
|
|
/* @ignore */
|
|
- (id)_initWithPatternImage:(CPImage)anImage
|
|
{
|
|
self = [super init];
|
|
|
|
if (self)
|
|
{
|
|
_patternImage = anImage;
|
|
_cssString = "url(\"" + [_patternImage filename] + "\")";
|
|
}
|
|
|
|
return self;
|
|
}
|
|
|
|
/*!
|
|
Returns the image being used as the pattern for the tile in this color.
|
|
*/
|
|
- (CPImage)patternImage
|
|
{
|
|
return _patternImage;
|
|
}
|
|
|
|
/*!
|
|
Returns the alpha component of this color.
|
|
*/
|
|
- (float)alphaComponent
|
|
{
|
|
return _components[3];
|
|
}
|
|
|
|
/*!
|
|
Returns the blue component of this color.
|
|
*/
|
|
- (float)blueComponent
|
|
{
|
|
return _components[2];
|
|
}
|
|
|
|
/*!
|
|
Returns the green component of this color.
|
|
*/
|
|
- (float)greenComponent
|
|
{
|
|
return _components[1];
|
|
}
|
|
|
|
/*!
|
|
Return the red component of this color.
|
|
*/
|
|
- (float)redComponent
|
|
{
|
|
return _components[0];
|
|
}
|
|
|
|
/*!
|
|
Returns the RGBA components of this color in an array.
|
|
The index values are ordered as:
|
|
<pre>
|
|
<b>Index</b> <b>Component</b>
|
|
0 Red
|
|
1 Green
|
|
2 Blue
|
|
3 Alpha
|
|
</pre>
|
|
*/
|
|
- (CPArray)components
|
|
{
|
|
return _components;
|
|
}
|
|
|
|
/*!
|
|
Returns a new color with the same RGB as the receiver but a new alpha component.
|
|
|
|
@param anAlphaComponent the alpha component for the new color
|
|
|
|
@return a new color object
|
|
*/
|
|
- (CPColor)colorWithAlphaComponent:(float)anAlphaComponent
|
|
{
|
|
var components = _components.slice();
|
|
|
|
components[components.length - 1] = anAlphaComponent;
|
|
|
|
return [[[self class] alloc] _initWithRGBA:components];
|
|
}
|
|
|
|
/*!
|
|
Returns an array with the HSB values for this color.
|
|
The index values are ordered as:
|
|
<pre>
|
|
<b>Index</b> <b>Component</b>
|
|
0 Hue
|
|
1 Saturation
|
|
2 Brightness
|
|
</pre>
|
|
*/
|
|
- (CPArray)hsbComponents
|
|
{
|
|
var red = ROUND(_components[_redComponent] * 255.0),
|
|
green = ROUND(_components[_greenComponent] * 255.0),
|
|
blue = ROUND(_components[_blueComponent] * 255.0);
|
|
|
|
var max = MAX(red, green, blue),
|
|
min = MIN(red, green, blue),
|
|
delta = max - min;
|
|
|
|
var brightness = max / 255.0,
|
|
saturation = (max != 0) ? delta / max : 0;
|
|
|
|
var hue;
|
|
if(saturation == 0)
|
|
hue = 0;
|
|
else
|
|
{
|
|
var rr = (max - red) / delta;
|
|
var gr = (max - green) / delta;
|
|
var br = (max - blue) / delta;
|
|
|
|
if (red == max)
|
|
hue = br - gr;
|
|
else if (green == max)
|
|
hue = 2 + rr - br;
|
|
else
|
|
hue = 4 + gr - rr;
|
|
|
|
hue /= 6;
|
|
if (hue < 0)
|
|
hue++;
|
|
}
|
|
|
|
return [
|
|
ROUND(hue * 360.0),
|
|
ROUND(saturation * 100.0),
|
|
ROUND(brightness * 100.0)
|
|
];
|
|
}
|
|
|
|
/*!
|
|
Returns the CSS representation of this color. The color will
|
|
be in one of the following forms:
|
|
<pre>
|
|
rgb(22,44,88)
|
|
rgba(22,44,88,0.5) // if there is an alpha
|
|
url("data:image/png;base64,BASE64ENCODEDDATA") // if there is a pattern image
|
|
</pre>
|
|
*/
|
|
- (CPString)cssString
|
|
{
|
|
return _cssString;
|
|
}
|
|
|
|
/*!
|
|
Returns a 6 character long hex string of this color.
|
|
*/
|
|
- (CPString)hexString
|
|
{
|
|
return rgbToHex([self redComponent], [self greenComponent], [self blueComponent])
|
|
}
|
|
|
|
- (BOOL)isEqual:(CPColor)aColor
|
|
{
|
|
if (!aColor)
|
|
return NO;
|
|
|
|
if (aColor === self)
|
|
return YES;
|
|
|
|
return [aColor isKindOfClass:CPColor] && [aColor cssString] === [self cssString];
|
|
}
|
|
|
|
- (CPString)description
|
|
{
|
|
return [super description]+" "+[self cssString];
|
|
}
|
|
|
|
@end
|
|
|
|
@implementation CPColor (CoreGraphicsExtensions)
|
|
|
|
/*!
|
|
Set's the receiver to be the fill and stroke color in the current graphics context
|
|
*/
|
|
- (void)set
|
|
{
|
|
[self setFill];
|
|
[self setStroke];
|
|
}
|
|
|
|
/*!
|
|
Set's the receiver to be the fill color in the current graphics context
|
|
*/
|
|
- (void)setFill
|
|
{
|
|
var ctx = [[CPGraphicsContext currentContext] graphicsPort];
|
|
CGContextSetFillColor(ctx, self);
|
|
}
|
|
|
|
/*!
|
|
Set's the receiver to be the stroke color in the current graphics context
|
|
*/
|
|
- (void)setStroke
|
|
{
|
|
var ctx = [[CPGraphicsContext currentContext] graphicsPort];
|
|
CGContextSetStrokeColor(ctx, self);
|
|
}
|
|
|
|
@end
|
|
|
|
@implementation CPColor (Debugging)
|
|
|
|
+ (CPColor)randomColor
|
|
{
|
|
return [CPColor colorWithRed:RAND() green:RAND() blue:RAND() alpha:1.0];
|
|
}
|
|
|
|
@end
|
|
|
|
var CPColorComponentsKey = @"CPColorComponentsKey",
|
|
CPColorPatternImageKey = @"CPColorPatternImageKey";
|
|
|
|
@implementation CPColor (CPCoding)
|
|
|
|
/*!
|
|
Initializes this color from the data archived in a coder.
|
|
@param aCoder the coder from which the color will be loaded
|
|
*/
|
|
- (id)initWithCoder:(CPCoder)aCoder
|
|
{
|
|
if ([aCoder containsValueForKey:CPColorPatternImageKey])
|
|
return [self _initWithPatternImage:[aCoder decodeObjectForKey:CPColorPatternImageKey]];
|
|
|
|
return [self _initWithRGBA:[aCoder decodeObjectForKey:CPColorComponentsKey]];
|
|
}
|
|
|
|
/*!
|
|
Archives this color into a coder.
|
|
@param aCoder the coder into which the color will be archived.
|
|
*/
|
|
- (void)encodeWithCoder:(CPCoder)aCoder
|
|
{
|
|
if (_patternImage)
|
|
[aCoder encodeObject:_patternImage forKey:CPColorPatternImageKey];
|
|
else
|
|
[aCoder encodeObject:_components forKey:CPColorComponentsKey];
|
|
}
|
|
|
|
@end
|
|
|
|
var hexCharacters = "0123456789ABCDEF";
|
|
|
|
/*!
|
|
Used for the CPColor \c +colorWithHexString: implementation
|
|
@ignore
|
|
@class CPColor
|
|
@return an array of rgb components
|
|
*/
|
|
function hexToRGB(hex)
|
|
{
|
|
if ( hex.length == 3 )
|
|
hex = hex.charAt(0) + hex.charAt(0) + hex.charAt(1) + hex.charAt(1) + hex.charAt(2) + hex.charAt(2);
|
|
if(hex.length != 6)
|
|
return null;
|
|
|
|
hex = hex.toUpperCase();
|
|
|
|
for(var i=0; i<hex.length; i++)
|
|
if(hexCharacters.indexOf(hex.charAt(i)) == -1)
|
|
return null;
|
|
|
|
var red = (hexCharacters.indexOf(hex.charAt(0)) * 16 + hexCharacters.indexOf(hex.charAt(1))) / 255.0;
|
|
var green = (hexCharacters.indexOf(hex.charAt(2)) * 16 + hexCharacters.indexOf(hex.charAt(3))) / 255.0;
|
|
var blue = (hexCharacters.indexOf(hex.charAt(4)) * 16 + hexCharacters.indexOf(hex.charAt(5))) / 255.0;
|
|
|
|
return [red, green, blue, 1.0];
|
|
}
|
|
|
|
function integerToBytes(integer, length) {
|
|
if (!length)
|
|
length = (integer == 0) ? 1 : Math.round((Math.log(integer)/Math.log(2))/8+0.5);
|
|
|
|
var bytes = new Array(length);
|
|
for (var i = length-1; i >= 0; i--) {
|
|
bytes[i] = integer & 255;
|
|
integer = integer >> 8
|
|
}
|
|
return bytes;
|
|
}
|
|
|
|
function rgbToHex(r,g,b) {
|
|
return byteToHex(r) + byteToHex(g) + byteToHex(b);
|
|
}
|
|
|
|
function byteToHex(n) {
|
|
if (!n || isNaN(n)) return "00";
|
|
n = ROUND(MIN(255,MAX(0,256*n)));
|
|
return hexCharacters.charAt((n - n % 16) / 16) +
|
|
hexCharacters.charAt(n % 16);
|
|
}
|
|
|
|
// Toll-Free bridge CPColor to CGColor.
|
|
//CGColor.prototype.isa = CPColor;
|
|
//[CPColor initialize];
|
|
|
|
//http://dev.mootools.net/browser/trunk/Source/Utilities/Color.js?rev=1184
|