API 0.9.5
AppKit/CoreGraphics/CGGradient.j
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00001 /*
00002  * CGGradient.j
00003  * AppKit
00004  *
00005  * Created by Francisco Tolmasky.
00006  * Copyright 2008, 280 North, Inc.
00007  *
00008  * This library is free software; you can redistribute it and/or
00009  * modify it under the terms of the GNU Lesser General Public
00010  * License as published by the Free Software Foundation; either
00011  * version 2.1 of the License, or (at your option) any later version.
00012  *
00013  * This library is distributed in the hope that it will be useful,
00014  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00015  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
00016  * Lesser General Public License for more details.
00017  *
00018  * You should have received a copy of the GNU Lesser General Public
00019  * License along with this library; if not, write to the Free Software
00020  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00021  */
00022 
00023 
00024 
00025 kCGGradientDrawsBeforeStartLocation = 1 << 0;
00026 kCGGradientDrawsAfterEndLocation    = 1 << 1;
00027 
00028 function CGGradientCreateWithColorComponents(aColorSpace, components, locations, count)
00029 {
00030     if ( locations === undefined || locations === NULL ) 
00031     {
00032         var num_of_colors = components.length / 4,
00033             locations = [];
00034         for ( var idx = 0; idx < num_of_colors; idx++ ) 
00035             locations.push( idx / (num_of_colors - 1) );
00036     }
00037 
00038     if ( count === undefined || count === NULL)
00039         var count = locations.length;
00040 
00041     var colors = [];
00042 
00043     while (count--)
00044     {
00045         var offset = count * 4;
00046         colors[count] = CGColorCreate(aColorSpace, components.slice(offset, offset + 4));
00047     }
00048 
00049     return CGGradientCreateWithColors(aColorSpace, colors, locations);
00050 }
00051 
00052 function CGGradientCreateWithColors(aColorSpace, colors, locations)
00053 {
00054     return { colorspace:aColorSpace, colors:colors, locations:locations };
00055 }
00056 
00057 function CGGradientRelease()
00058 {
00059 }
00060 
00061 function CGGradientRetain(aGradient)
00062 {
00063     return aGradient;
00064 }
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