kopia lustrzana https://github.com/backface/turtlestitch
cleanup
Michael Aschauer
rodzic
025779c757
commit
eca290ff1c
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@ -1,633 +0,0 @@
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/*
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StackBlur - a fast almost Gaussian Blur For Canvas
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Version: 0.5
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Author: Mario Klingemann
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Contact: mario@quasimondo.com
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Website: http://www.quasimondo.com/StackBlurForCanvas
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Twitter: @quasimondo
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In case you find this class useful - especially in commercial projects -
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I am not totally unhappy for a small donation to my PayPal account
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mario@quasimondo.de
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Or support me on flattr:
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https://flattr.com/thing/72791/StackBlur-a-fast-almost-Gaussian-Blur-Effect-for-CanvasJavascript
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Copyright (c) 2010 Mario Klingemann
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Permission is hereby granted, free of charge, to any person
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obtaining a copy of this software and associated documentation
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files (the "Software"), to deal in the Software without
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restriction, including without limitation the rights to use,
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copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following
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conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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OTHER DEALINGS IN THE SOFTWARE.
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*/
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var mul_table = [
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512,512,456,512,328,456,335,512,405,328,271,456,388,335,292,512,
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454,405,364,328,298,271,496,456,420,388,360,335,312,292,273,512,
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482,454,428,405,383,364,345,328,312,298,284,271,259,496,475,456,
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437,420,404,388,374,360,347,335,323,312,302,292,282,273,265,512,
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497,482,468,454,441,428,417,405,394,383,373,364,354,345,337,328,
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320,312,305,298,291,284,278,271,265,259,507,496,485,475,465,456,
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446,437,428,420,412,404,396,388,381,374,367,360,354,347,341,335,
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329,323,318,312,307,302,297,292,287,282,278,273,269,265,261,512,
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505,497,489,482,475,468,461,454,447,441,435,428,422,417,411,405,
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399,394,389,383,378,373,368,364,359,354,350,345,341,337,332,328,
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324,320,316,312,309,305,301,298,294,291,287,284,281,278,274,271,
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268,265,262,259,257,507,501,496,491,485,480,475,470,465,460,456,
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451,446,442,437,433,428,424,420,416,412,408,404,400,396,392,388,
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385,381,377,374,370,367,363,360,357,354,350,347,344,341,338,335,
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332,329,326,323,320,318,315,312,310,307,304,302,299,297,294,292,
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289,287,285,282,280,278,275,273,271,269,267,265,263,261,259];
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var shg_table = [
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9, 11, 12, 13, 13, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 17,
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17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 18, 18, 19,
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19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 20, 20, 20,
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20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 21,
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21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
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21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22,
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22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22,
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22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 23,
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23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23,
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23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23,
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23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23,
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23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
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24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
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24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
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24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
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24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24 ];
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function premultiplyAlpha(imageData)
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{
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var pixels = imageData.data;
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var size = imageData.width * imageData.height * 4;
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for (var i=0; i<size; i+=4)
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{
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var a = pixels[i+3] / 255;
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pixels[i ] *= a;
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pixels[i+1] *= a;
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pixels[i+2] *= a;
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}
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}
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function unpremultiplyAlpha(imageData)
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{
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var pixels = imageData.data;
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var size = imageData.width * imageData.height * 4;
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for (var i=0; i<size; i+=4)
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{
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var a = pixels[i+3];
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if (a != 0)
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{
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a = 255 / a;
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pixels[i ] *= a;
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pixels[i+1] *= a;
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pixels[i+2] *= a;
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}
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}
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}
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function stackBlurImage( imageID, canvasID, radius, blurAlphaChannel )
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{
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var img = document.getElementById( imageID );
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var w = img.naturalWidth;
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var h = img.naturalHeight;
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var canvas = document.getElementById( canvasID );
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canvas.style.width = w + "px";
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canvas.style.height = h + "px";
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canvas.width = w;
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canvas.height = h;
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var context = canvas.getContext("2d");
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context.clearRect( 0, 0, w, h );
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context.drawImage( img, 0, 0 );
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if ( isNaN(radius) || radius < 1 ) return;
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if ( blurAlphaChannel )
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stackBlurCanvasRGBA( canvasID, 0, 0, w, h, radius );
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else
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stackBlurCanvasRGB( canvasID, 0, 0, w, h, radius );
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}
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function stackBlurCanvasRGBA( id, top_x, top_y, width, height, radius )
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{
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if ( isNaN(radius) || radius < 1 ) return;
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radius |= 0;
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var canvas = document.getElementById( id );
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var context = canvas.getContext("2d");
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var imageData;
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try {
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try {
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imageData = context.getImageData( top_x, top_y, width, height );
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} catch(e) {
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// NOTE: this part is supposedly only needed if you want to work with local files
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// so it might be okay to remove the whole try/catch block and just use
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// imageData = context.getImageData( top_x, top_y, width, height );
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try {
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netscape.security.PrivilegeManager.enablePrivilege("UniversalBrowserRead");
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imageData = context.getImageData( top_x, top_y, width, height );
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} catch(e) {
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alert("Cannot access local image");
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throw new Error("unable to access local image data: " + e);
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return;
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}
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}
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} catch(e) {
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alert("Cannot access image");
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throw new Error("unable to access image data: " + e);
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}
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premultiplyAlpha(imageData);
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var pixels = imageData.data;
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var x, y, i, p, yp, yi, yw, r_sum, g_sum, b_sum, a_sum,
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r_out_sum, g_out_sum, b_out_sum, a_out_sum,
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r_in_sum, g_in_sum, b_in_sum, a_in_sum,
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pr, pg, pb, pa, rbs;
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var div = radius + radius + 1;
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var w4 = width << 2;
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var widthMinus1 = width - 1;
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var heightMinus1 = height - 1;
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var radiusPlus1 = radius + 1;
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var sumFactor = radiusPlus1 * ( radiusPlus1 + 1 ) / 2;
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var stackStart = new BlurStack();
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var stack = stackStart;
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for ( i = 1; i < div; i++ )
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{
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stack = stack.next = new BlurStack();
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if ( i == radiusPlus1 ) var stackEnd = stack;
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}
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stack.next = stackStart;
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var stackIn = null;
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var stackOut = null;
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yw = yi = 0;
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var mul_sum = mul_table[radius];
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var shg_sum = shg_table[radius];
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for ( y = 0; y < height; y++ )
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{
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r_in_sum = g_in_sum = b_in_sum = a_in_sum = r_sum = g_sum = b_sum = a_sum = 0;
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r_out_sum = radiusPlus1 * ( pr = pixels[yi] );
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g_out_sum = radiusPlus1 * ( pg = pixels[yi+1] );
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b_out_sum = radiusPlus1 * ( pb = pixels[yi+2] );
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a_out_sum = radiusPlus1 * ( pa = pixels[yi+3] );
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r_sum += sumFactor * pr;
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g_sum += sumFactor * pg;
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b_sum += sumFactor * pb;
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a_sum += sumFactor * pa;
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stack = stackStart;
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for( i = 0; i < radiusPlus1; i++ )
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{
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stack.r = pr;
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stack.g = pg;
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stack.b = pb;
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stack.a = pa;
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stack = stack.next;
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}
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for( i = 1; i < radiusPlus1; i++ )
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{
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p = yi + (( widthMinus1 < i ? widthMinus1 : i ) << 2 );
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r_sum += ( stack.r = ( pr = pixels[p])) * ( rbs = radiusPlus1 - i );
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g_sum += ( stack.g = ( pg = pixels[p+1])) * rbs;
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b_sum += ( stack.b = ( pb = pixels[p+2])) * rbs;
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a_sum += ( stack.a = ( pa = pixels[p+3])) * rbs;
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r_in_sum += pr;
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g_in_sum += pg;
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b_in_sum += pb;
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a_in_sum += pa;
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stack = stack.next;
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}
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stackIn = stackStart;
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stackOut = stackEnd;
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for ( x = 0; x < width; x++ )
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{
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pixels[yi] = (r_sum * mul_sum) >> shg_sum;
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pixels[yi+1] = (g_sum * mul_sum) >> shg_sum;
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pixels[yi+2] = (b_sum * mul_sum) >> shg_sum;
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pixels[yi+3] = (a_sum * mul_sum) >> shg_sum;
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r_sum -= r_out_sum;
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g_sum -= g_out_sum;
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b_sum -= b_out_sum;
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a_sum -= a_out_sum;
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r_out_sum -= stackIn.r;
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g_out_sum -= stackIn.g;
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b_out_sum -= stackIn.b;
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a_out_sum -= stackIn.a;
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p = ( yw + ( ( p = x + radius + 1 ) < widthMinus1 ? p : widthMinus1 ) ) << 2;
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r_in_sum += ( stackIn.r = pixels[p]);
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g_in_sum += ( stackIn.g = pixels[p+1]);
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b_in_sum += ( stackIn.b = pixels[p+2]);
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a_in_sum += ( stackIn.a = pixels[p+3]);
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r_sum += r_in_sum;
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g_sum += g_in_sum;
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b_sum += b_in_sum;
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a_sum += a_in_sum;
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stackIn = stackIn.next;
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r_out_sum += ( pr = stackOut.r );
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g_out_sum += ( pg = stackOut.g );
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b_out_sum += ( pb = stackOut.b );
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a_out_sum += ( pa = stackOut.a );
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r_in_sum -= pr;
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g_in_sum -= pg;
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b_in_sum -= pb;
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a_in_sum -= pa;
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stackOut = stackOut.next;
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yi += 4;
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}
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yw += width;
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}
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for ( x = 0; x < width; x++ )
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{
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g_in_sum = b_in_sum = a_in_sum = r_in_sum = g_sum = b_sum = a_sum = r_sum = 0;
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yi = x << 2;
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r_out_sum = radiusPlus1 * ( pr = pixels[yi]);
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g_out_sum = radiusPlus1 * ( pg = pixels[yi+1]);
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b_out_sum = radiusPlus1 * ( pb = pixels[yi+2]);
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a_out_sum = radiusPlus1 * ( pa = pixels[yi+3]);
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r_sum += sumFactor * pr;
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g_sum += sumFactor * pg;
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b_sum += sumFactor * pb;
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a_sum += sumFactor * pa;
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stack = stackStart;
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for( i = 0; i < radiusPlus1; i++ )
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{
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stack.r = pr;
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stack.g = pg;
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stack.b = pb;
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stack.a = pa;
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stack = stack.next;
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}
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yp = width;
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for( i = 1; i <= radius; i++ )
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{
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yi = ( yp + x ) << 2;
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r_sum += ( stack.r = ( pr = pixels[yi])) * ( rbs = radiusPlus1 - i );
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g_sum += ( stack.g = ( pg = pixels[yi+1])) * rbs;
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b_sum += ( stack.b = ( pb = pixels[yi+2])) * rbs;
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a_sum += ( stack.a = ( pa = pixels[yi+3])) * rbs;
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r_in_sum += pr;
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g_in_sum += pg;
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b_in_sum += pb;
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a_in_sum += pa;
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stack = stack.next;
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if( i < heightMinus1 )
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{
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yp += width;
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}
|
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}
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yi = x;
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stackIn = stackStart;
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stackOut = stackEnd;
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for ( y = 0; y < height; y++ )
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{
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p = yi << 2;
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pixels[p] = (r_sum * mul_sum) >> shg_sum;
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pixels[p+1] = (g_sum * mul_sum) >> shg_sum;
|
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pixels[p+2] = (b_sum * mul_sum) >> shg_sum;
|
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pixels[p+3] = (a_sum * mul_sum) >> shg_sum;
|
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r_sum -= r_out_sum;
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g_sum -= g_out_sum;
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b_sum -= b_out_sum;
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a_sum -= a_out_sum;
|
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|
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r_out_sum -= stackIn.r;
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g_out_sum -= stackIn.g;
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b_out_sum -= stackIn.b;
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a_out_sum -= stackIn.a;
|
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|
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p = ( x + (( ( p = y + radiusPlus1) < heightMinus1 ? p : heightMinus1 ) * width )) << 2;
|
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r_sum += ( r_in_sum += ( stackIn.r = pixels[p]));
|
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g_sum += ( g_in_sum += ( stackIn.g = pixels[p+1]));
|
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b_sum += ( b_in_sum += ( stackIn.b = pixels[p+2]));
|
||||
a_sum += ( a_in_sum += ( stackIn.a = pixels[p+3]));
|
||||
|
||||
stackIn = stackIn.next;
|
||||
|
||||
r_out_sum += ( pr = stackOut.r );
|
||||
g_out_sum += ( pg = stackOut.g );
|
||||
b_out_sum += ( pb = stackOut.b );
|
||||
a_out_sum += ( pa = stackOut.a );
|
||||
|
||||
r_in_sum -= pr;
|
||||
g_in_sum -= pg;
|
||||
b_in_sum -= pb;
|
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a_in_sum -= pa;
|
||||
|
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stackOut = stackOut.next;
|
||||
|
||||
yi += width;
|
||||
}
|
||||
}
|
||||
|
||||
unpremultiplyAlpha(imageData);
|
||||
|
||||
context.putImageData( imageData, top_x, top_y );
|
||||
}
|
||||
|
||||
|
||||
function stackBlurCanvasRGB( id, top_x, top_y, width, height, radius )
|
||||
{
|
||||
if ( isNaN(radius) || radius < 1 ) return;
|
||||
radius |= 0;
|
||||
|
||||
var canvas = document.getElementById( id );
|
||||
var context = canvas.getContext("2d");
|
||||
var imageData;
|
||||
|
||||
try {
|
||||
try {
|
||||
imageData = context.getImageData( top_x, top_y, width, height );
|
||||
} catch(e) {
|
||||
|
||||
// NOTE: this part is supposedly only needed if you want to work with local files
|
||||
// so it might be okay to remove the whole try/catch block and just use
|
||||
// imageData = context.getImageData( top_x, top_y, width, height );
|
||||
try {
|
||||
netscape.security.PrivilegeManager.enablePrivilege("UniversalBrowserRead");
|
||||
imageData = context.getImageData( top_x, top_y, width, height );
|
||||
} catch(e) {
|
||||
alert("Cannot access local image");
|
||||
throw new Error("unable to access local image data: " + e);
|
||||
return;
|
||||
}
|
||||
}
|
||||
} catch(e) {
|
||||
alert("Cannot access image");
|
||||
throw new Error("unable to access image data: " + e);
|
||||
}
|
||||
|
||||
var pixels = imageData.data;
|
||||
|
||||
var x, y, i, p, yp, yi, yw, r_sum, g_sum, b_sum,
|
||||
r_out_sum, g_out_sum, b_out_sum,
|
||||
r_in_sum, g_in_sum, b_in_sum,
|
||||
pr, pg, pb, rbs;
|
||||
|
||||
var div = radius + radius + 1;
|
||||
var w4 = width << 2;
|
||||
var widthMinus1 = width - 1;
|
||||
var heightMinus1 = height - 1;
|
||||
var radiusPlus1 = radius + 1;
|
||||
var sumFactor = radiusPlus1 * ( radiusPlus1 + 1 ) / 2;
|
||||
|
||||
var stackStart = new BlurStack();
|
||||
var stack = stackStart;
|
||||
for ( i = 1; i < div; i++ )
|
||||
{
|
||||
stack = stack.next = new BlurStack();
|
||||
if ( i == radiusPlus1 ) var stackEnd = stack;
|
||||
}
|
||||
stack.next = stackStart;
|
||||
var stackIn = null;
|
||||
var stackOut = null;
|
||||
|
||||
yw = yi = 0;
|
||||
|
||||
var mul_sum = mul_table[radius];
|
||||
var shg_sum = shg_table[radius];
|
||||
|
||||
for ( y = 0; y < height; y++ )
|
||||
{
|
||||
r_in_sum = g_in_sum = b_in_sum = r_sum = g_sum = b_sum = 0;
|
||||
|
||||
r_out_sum = radiusPlus1 * ( pr = pixels[yi] );
|
||||
g_out_sum = radiusPlus1 * ( pg = pixels[yi+1] );
|
||||
b_out_sum = radiusPlus1 * ( pb = pixels[yi+2] );
|
||||
|
||||
r_sum += sumFactor * pr;
|
||||
g_sum += sumFactor * pg;
|
||||
b_sum += sumFactor * pb;
|
||||
|
||||
stack = stackStart;
|
||||
|
||||
for( i = 0; i < radiusPlus1; i++ )
|
||||
{
|
||||
stack.r = pr;
|
||||
stack.g = pg;
|
||||
stack.b = pb;
|
||||
stack = stack.next;
|
||||
}
|
||||
|
||||
for( i = 1; i < radiusPlus1; i++ )
|
||||
{
|
||||
p = yi + (( widthMinus1 < i ? widthMinus1 : i ) << 2 );
|
||||
r_sum += ( stack.r = ( pr = pixels[p])) * ( rbs = radiusPlus1 - i );
|
||||
g_sum += ( stack.g = ( pg = pixels[p+1])) * rbs;
|
||||
b_sum += ( stack.b = ( pb = pixels[p+2])) * rbs;
|
||||
|
||||
r_in_sum += pr;
|
||||
g_in_sum += pg;
|
||||
b_in_sum += pb;
|
||||
|
||||
stack = stack.next;
|
||||
}
|
||||
|
||||
|
||||
stackIn = stackStart;
|
||||
stackOut = stackEnd;
|
||||
for ( x = 0; x < width; x++ )
|
||||
{
|
||||
pixels[yi] = (r_sum * mul_sum) >> shg_sum;
|
||||
pixels[yi+1] = (g_sum * mul_sum) >> shg_sum;
|
||||
pixels[yi+2] = (b_sum * mul_sum) >> shg_sum;
|
||||
|
||||
r_sum -= r_out_sum;
|
||||
g_sum -= g_out_sum;
|
||||
b_sum -= b_out_sum;
|
||||
|
||||
r_out_sum -= stackIn.r;
|
||||
g_out_sum -= stackIn.g;
|
||||
b_out_sum -= stackIn.b;
|
||||
|
||||
p = ( yw + ( ( p = x + radius + 1 ) < widthMinus1 ? p : widthMinus1 ) ) << 2;
|
||||
|
||||
r_in_sum += ( stackIn.r = pixels[p]);
|
||||
g_in_sum += ( stackIn.g = pixels[p+1]);
|
||||
b_in_sum += ( stackIn.b = pixels[p+2]);
|
||||
|
||||
r_sum += r_in_sum;
|
||||
g_sum += g_in_sum;
|
||||
b_sum += b_in_sum;
|
||||
|
||||
stackIn = stackIn.next;
|
||||
|
||||
r_out_sum += ( pr = stackOut.r );
|
||||
g_out_sum += ( pg = stackOut.g );
|
||||
b_out_sum += ( pb = stackOut.b );
|
||||
|
||||
r_in_sum -= pr;
|
||||
g_in_sum -= pg;
|
||||
b_in_sum -= pb;
|
||||
|
||||
stackOut = stackOut.next;
|
||||
|
||||
yi += 4;
|
||||
}
|
||||
yw += width;
|
||||
}
|
||||
|
||||
|
||||
for ( x = 0; x < width; x++ )
|
||||
{
|
||||
g_in_sum = b_in_sum = r_in_sum = g_sum = b_sum = r_sum = 0;
|
||||
|
||||
yi = x << 2;
|
||||
r_out_sum = radiusPlus1 * ( pr = pixels[yi]);
|
||||
g_out_sum = radiusPlus1 * ( pg = pixels[yi+1]);
|
||||
b_out_sum = radiusPlus1 * ( pb = pixels[yi+2]);
|
||||
|
||||
r_sum += sumFactor * pr;
|
||||
g_sum += sumFactor * pg;
|
||||
b_sum += sumFactor * pb;
|
||||
|
||||
stack = stackStart;
|
||||
|
||||
for( i = 0; i < radiusPlus1; i++ )
|
||||
{
|
||||
stack.r = pr;
|
||||
stack.g = pg;
|
||||
stack.b = pb;
|
||||
stack = stack.next;
|
||||
}
|
||||
|
||||
yp = width;
|
||||
|
||||
for( i = 1; i <= radius; i++ )
|
||||
{
|
||||
yi = ( yp + x ) << 2;
|
||||
|
||||
r_sum += ( stack.r = ( pr = pixels[yi])) * ( rbs = radiusPlus1 - i );
|
||||
g_sum += ( stack.g = ( pg = pixels[yi+1])) * rbs;
|
||||
b_sum += ( stack.b = ( pb = pixels[yi+2])) * rbs;
|
||||
|
||||
r_in_sum += pr;
|
||||
g_in_sum += pg;
|
||||
b_in_sum += pb;
|
||||
|
||||
stack = stack.next;
|
||||
|
||||
if( i < heightMinus1 )
|
||||
{
|
||||
yp += width;
|
||||
}
|
||||
}
|
||||
|
||||
yi = x;
|
||||
stackIn = stackStart;
|
||||
stackOut = stackEnd;
|
||||
for ( y = 0; y < height; y++ )
|
||||
{
|
||||
p = yi << 2;
|
||||
pixels[p] = (r_sum * mul_sum) >> shg_sum;
|
||||
pixels[p+1] = (g_sum * mul_sum) >> shg_sum;
|
||||
pixels[p+2] = (b_sum * mul_sum) >> shg_sum;
|
||||
|
||||
r_sum -= r_out_sum;
|
||||
g_sum -= g_out_sum;
|
||||
b_sum -= b_out_sum;
|
||||
|
||||
r_out_sum -= stackIn.r;
|
||||
g_out_sum -= stackIn.g;
|
||||
b_out_sum -= stackIn.b;
|
||||
|
||||
p = ( x + (( ( p = y + radiusPlus1) < heightMinus1 ? p : heightMinus1 ) * width )) << 2;
|
||||
|
||||
r_sum += ( r_in_sum += ( stackIn.r = pixels[p]));
|
||||
g_sum += ( g_in_sum += ( stackIn.g = pixels[p+1]));
|
||||
b_sum += ( b_in_sum += ( stackIn.b = pixels[p+2]));
|
||||
|
||||
stackIn = stackIn.next;
|
||||
|
||||
r_out_sum += ( pr = stackOut.r );
|
||||
g_out_sum += ( pg = stackOut.g );
|
||||
b_out_sum += ( pb = stackOut.b );
|
||||
|
||||
r_in_sum -= pr;
|
||||
g_in_sum -= pg;
|
||||
b_in_sum -= pb;
|
||||
|
||||
stackOut = stackOut.next;
|
||||
|
||||
yi += width;
|
||||
}
|
||||
}
|
||||
|
||||
context.putImageData( imageData, top_x, top_y );
|
||||
|
||||
}
|
||||
|
||||
function BlurStack()
|
||||
{
|
||||
this.r = 0;
|
||||
this.g = 0;
|
||||
this.b = 0;
|
||||
this.a = 0;
|
||||
this.next = null;
|
||||
}
|
||||
Plik diff jest za duży
Load Diff
|
|
@ -1,288 +0,0 @@
|
|||
/**
|
||||
* A class to parse color values
|
||||
* @author Stoyan Stefanov <sstoo@gmail.com>
|
||||
* @link http://www.phpied.com/rgb-color-parser-in-javascript/
|
||||
* @license Use it if you like it
|
||||
*/
|
||||
function RGBColor(color_string)
|
||||
{
|
||||
this.ok = false;
|
||||
|
||||
// strip any leading #
|
||||
if (color_string.charAt(0) == '#') { // remove # if any
|
||||
color_string = color_string.substr(1,6);
|
||||
}
|
||||
|
||||
color_string = color_string.replace(/ /g,'');
|
||||
color_string = color_string.toLowerCase();
|
||||
|
||||
// before getting into regexps, try simple matches
|
||||
// and overwrite the input
|
||||
var simple_colors = {
|
||||
aliceblue: 'f0f8ff',
|
||||
antiquewhite: 'faebd7',
|
||||
aqua: '00ffff',
|
||||
aquamarine: '7fffd4',
|
||||
azure: 'f0ffff',
|
||||
beige: 'f5f5dc',
|
||||
bisque: 'ffe4c4',
|
||||
black: '000000',
|
||||
blanchedalmond: 'ffebcd',
|
||||
blue: '0000ff',
|
||||
blueviolet: '8a2be2',
|
||||
brown: 'a52a2a',
|
||||
burlywood: 'deb887',
|
||||
cadetblue: '5f9ea0',
|
||||
chartreuse: '7fff00',
|
||||
chocolate: 'd2691e',
|
||||
coral: 'ff7f50',
|
||||
cornflowerblue: '6495ed',
|
||||
cornsilk: 'fff8dc',
|
||||
crimson: 'dc143c',
|
||||
cyan: '00ffff',
|
||||
darkblue: '00008b',
|
||||
darkcyan: '008b8b',
|
||||
darkgoldenrod: 'b8860b',
|
||||
darkgray: 'a9a9a9',
|
||||
darkgreen: '006400',
|
||||
darkkhaki: 'bdb76b',
|
||||
darkmagenta: '8b008b',
|
||||
darkolivegreen: '556b2f',
|
||||
darkorange: 'ff8c00',
|
||||
darkorchid: '9932cc',
|
||||
darkred: '8b0000',
|
||||
darksalmon: 'e9967a',
|
||||
darkseagreen: '8fbc8f',
|
||||
darkslateblue: '483d8b',
|
||||
darkslategray: '2f4f4f',
|
||||
darkturquoise: '00ced1',
|
||||
darkviolet: '9400d3',
|
||||
deeppink: 'ff1493',
|
||||
deepskyblue: '00bfff',
|
||||
dimgray: '696969',
|
||||
dodgerblue: '1e90ff',
|
||||
feldspar: 'd19275',
|
||||
firebrick: 'b22222',
|
||||
floralwhite: 'fffaf0',
|
||||
forestgreen: '228b22',
|
||||
fuchsia: 'ff00ff',
|
||||
gainsboro: 'dcdcdc',
|
||||
ghostwhite: 'f8f8ff',
|
||||
gold: 'ffd700',
|
||||
goldenrod: 'daa520',
|
||||
gray: '808080',
|
||||
green: '008000',
|
||||
greenyellow: 'adff2f',
|
||||
honeydew: 'f0fff0',
|
||||
hotpink: 'ff69b4',
|
||||
indianred : 'cd5c5c',
|
||||
indigo : '4b0082',
|
||||
ivory: 'fffff0',
|
||||
khaki: 'f0e68c',
|
||||
lavender: 'e6e6fa',
|
||||
lavenderblush: 'fff0f5',
|
||||
lawngreen: '7cfc00',
|
||||
lemonchiffon: 'fffacd',
|
||||
lightblue: 'add8e6',
|
||||
lightcoral: 'f08080',
|
||||
lightcyan: 'e0ffff',
|
||||
lightgoldenrodyellow: 'fafad2',
|
||||
lightgrey: 'd3d3d3',
|
||||
lightgreen: '90ee90',
|
||||
lightpink: 'ffb6c1',
|
||||
lightsalmon: 'ffa07a',
|
||||
lightseagreen: '20b2aa',
|
||||
lightskyblue: '87cefa',
|
||||
lightslateblue: '8470ff',
|
||||
lightslategray: '778899',
|
||||
lightsteelblue: 'b0c4de',
|
||||
lightyellow: 'ffffe0',
|
||||
lime: '00ff00',
|
||||
limegreen: '32cd32',
|
||||
linen: 'faf0e6',
|
||||
magenta: 'ff00ff',
|
||||
maroon: '800000',
|
||||
mediumaquamarine: '66cdaa',
|
||||
mediumblue: '0000cd',
|
||||
mediumorchid: 'ba55d3',
|
||||
mediumpurple: '9370d8',
|
||||
mediumseagreen: '3cb371',
|
||||
mediumslateblue: '7b68ee',
|
||||
mediumspringgreen: '00fa9a',
|
||||
mediumturquoise: '48d1cc',
|
||||
mediumvioletred: 'c71585',
|
||||
midnightblue: '191970',
|
||||
mintcream: 'f5fffa',
|
||||
mistyrose: 'ffe4e1',
|
||||
moccasin: 'ffe4b5',
|
||||
navajowhite: 'ffdead',
|
||||
navy: '000080',
|
||||
oldlace: 'fdf5e6',
|
||||
olive: '808000',
|
||||
olivedrab: '6b8e23',
|
||||
orange: 'ffa500',
|
||||
orangered: 'ff4500',
|
||||
orchid: 'da70d6',
|
||||
palegoldenrod: 'eee8aa',
|
||||
palegreen: '98fb98',
|
||||
paleturquoise: 'afeeee',
|
||||
palevioletred: 'd87093',
|
||||
papayawhip: 'ffefd5',
|
||||
peachpuff: 'ffdab9',
|
||||
peru: 'cd853f',
|
||||
pink: 'ffc0cb',
|
||||
plum: 'dda0dd',
|
||||
powderblue: 'b0e0e6',
|
||||
purple: '800080',
|
||||
red: 'ff0000',
|
||||
rosybrown: 'bc8f8f',
|
||||
royalblue: '4169e1',
|
||||
saddlebrown: '8b4513',
|
||||
salmon: 'fa8072',
|
||||
sandybrown: 'f4a460',
|
||||
seagreen: '2e8b57',
|
||||
seashell: 'fff5ee',
|
||||
sienna: 'a0522d',
|
||||
silver: 'c0c0c0',
|
||||
skyblue: '87ceeb',
|
||||
slateblue: '6a5acd',
|
||||
slategray: '708090',
|
||||
snow: 'fffafa',
|
||||
springgreen: '00ff7f',
|
||||
steelblue: '4682b4',
|
||||
tan: 'd2b48c',
|
||||
teal: '008080',
|
||||
thistle: 'd8bfd8',
|
||||
tomato: 'ff6347',
|
||||
turquoise: '40e0d0',
|
||||
violet: 'ee82ee',
|
||||
violetred: 'd02090',
|
||||
wheat: 'f5deb3',
|
||||
white: 'ffffff',
|
||||
whitesmoke: 'f5f5f5',
|
||||
yellow: 'ffff00',
|
||||
yellowgreen: '9acd32'
|
||||
};
|
||||
for (var key in simple_colors) {
|
||||
if (color_string == key) {
|
||||
color_string = simple_colors[key];
|
||||
}
|
||||
}
|
||||
// emd of simple type-in colors
|
||||
|
||||
// array of color definition objects
|
||||
var color_defs = [
|
||||
{
|
||||
re: /^rgb\((\d{1,3}),\s*(\d{1,3}),\s*(\d{1,3})\)$/,
|
||||
example: ['rgb(123, 234, 45)', 'rgb(255,234,245)'],
|
||||
process: function (bits){
|
||||
return [
|
||||
parseInt(bits[1]),
|
||||
parseInt(bits[2]),
|
||||
parseInt(bits[3])
|
||||
];
|
||||
}
|
||||
},
|
||||
{
|
||||
re: /^(\w{2})(\w{2})(\w{2})$/,
|
||||
example: ['#00ff00', '336699'],
|
||||
process: function (bits){
|
||||
return [
|
||||
parseInt(bits[1], 16),
|
||||
parseInt(bits[2], 16),
|
||||
parseInt(bits[3], 16)
|
||||
];
|
||||
}
|
||||
},
|
||||
{
|
||||
re: /^(\w{1})(\w{1})(\w{1})$/,
|
||||
example: ['#fb0', 'f0f'],
|
||||
process: function (bits){
|
||||
return [
|
||||
parseInt(bits[1] + bits[1], 16),
|
||||
parseInt(bits[2] + bits[2], 16),
|
||||
parseInt(bits[3] + bits[3], 16)
|
||||
];
|
||||
}
|
||||
}
|
||||
];
|
||||
|
||||
// search through the definitions to find a match
|
||||
for (var i = 0; i < color_defs.length; i++) {
|
||||
var re = color_defs[i].re;
|
||||
var processor = color_defs[i].process;
|
||||
var bits = re.exec(color_string);
|
||||
if (bits) {
|
||||
channels = processor(bits);
|
||||
this.r = channels[0];
|
||||
this.g = channels[1];
|
||||
this.b = channels[2];
|
||||
this.ok = true;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
// validate/cleanup values
|
||||
this.r = (this.r < 0 || isNaN(this.r)) ? 0 : ((this.r > 255) ? 255 : this.r);
|
||||
this.g = (this.g < 0 || isNaN(this.g)) ? 0 : ((this.g > 255) ? 255 : this.g);
|
||||
this.b = (this.b < 0 || isNaN(this.b)) ? 0 : ((this.b > 255) ? 255 : this.b);
|
||||
|
||||
// some getters
|
||||
this.toRGB = function () {
|
||||
return 'rgb(' + this.r + ', ' + this.g + ', ' + this.b + ')';
|
||||
}
|
||||
this.toHex = function () {
|
||||
var r = this.r.toString(16);
|
||||
var g = this.g.toString(16);
|
||||
var b = this.b.toString(16);
|
||||
if (r.length == 1) r = '0' + r;
|
||||
if (g.length == 1) g = '0' + g;
|
||||
if (b.length == 1) b = '0' + b;
|
||||
return '#' + r + g + b;
|
||||
}
|
||||
|
||||
// help
|
||||
this.getHelpXML = function () {
|
||||
|
||||
var examples = new Array();
|
||||
// add regexps
|
||||
for (var i = 0; i < color_defs.length; i++) {
|
||||
var example = color_defs[i].example;
|
||||
for (var j = 0; j < example.length; j++) {
|
||||
examples[examples.length] = example[j];
|
||||
}
|
||||
}
|
||||
// add type-in colors
|
||||
for (var sc in simple_colors) {
|
||||
examples[examples.length] = sc;
|
||||
}
|
||||
|
||||
var xml = document.createElement('ul');
|
||||
xml.setAttribute('id', 'rgbcolor-examples');
|
||||
for (var i = 0; i < examples.length; i++) {
|
||||
try {
|
||||
var list_item = document.createElement('li');
|
||||
var list_color = new RGBColor(examples[i]);
|
||||
var example_div = document.createElement('div');
|
||||
example_div.style.cssText =
|
||||
'margin: 3px; '
|
||||
+ 'border: 1px solid black; '
|
||||
+ 'background:' + list_color.toHex() + '; '
|
||||
+ 'color:' + list_color.toHex()
|
||||
;
|
||||
example_div.appendChild(document.createTextNode('test'));
|
||||
var list_item_value = document.createTextNode(
|
||||
' ' + examples[i] + ' -> ' + list_color.toRGB() + ' -> ' + list_color.toHex()
|
||||
);
|
||||
list_item.appendChild(example_div);
|
||||
list_item.appendChild(list_item_value);
|
||||
xml.appendChild(list_item);
|
||||
|
||||
} catch(e){}
|
||||
}
|
||||
return xml;
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
Plik binarny nie jest wyświetlany.
|
Przed Szerokość: | Wysokość: | Rozmiar: 1.2 KiB |
File diff suppressed because one or more lines are too long
|
|
@ -1 +0,0 @@
|
|||
|
||||
Ładowanie…
Reference in New Issue