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// $Id: colors.js,v 1.5 2010/02/21 08:27:49 bbannon Exp $ // Predefined Colors var pcoc = getCookie( 'webcalendar_custom_colors' ), precol = [16], // Color choices colorList = ['0', 'ff0000', '400000', '800000', 'c00000', 'ff4040', 'ff8080', 'ffc0c0', '000000', 'ffff00', '404000', '808000', 'c0c000', 'ffff40', 'ffff80', 'ffffc0', '202020', '00ff00', '004000', '008000', '00c000', '40ff40', '80ff80', 'c0ffc0', '404040', '00ffff', '004040', '008080', '00c0c0', '40ffff', '80ffff', 'c0ffff', '808080', '0000ff', '000040', '000080', '0000c0', '4040ff', '8080ff', 'c0c0ff', 'c0c0c0', 'ff00ff', '400040', '800080', 'c000c0', 'ff40ff', 'ff80ff', 'ffc0ff', 'ffffff'], // Predefined Colors Cursor blankImg = cursorImg = new Image(), cursorPos = 1, // Other Stuff hexchars = '0123456789ABCDEF', curcol, curhsl, currgb, oldcol, thisInput; blankImg.src = 'images/blank.gif'; cursorImg.src = 'images/cursor.gif'; if ( !pcoc ) { pcoc = 'FFFFFF, FFFFFF, FFFFFF, FFFFFF, FFFFFF, FFFFFF, FFFFFF, FFFFFF,' + 'FFFFFF, FFFFFF, FFFFFF, FFFFFF, FFFFFF, FFFFFF, FFFFFF, FFFFFF'; } precol = pcoc.split( ',', 16 ); function setInit() { thiscolorcell = document.getElementById( 'colorcell' ).value; thisInput = window.opener.document.getElementById( thiscolorcell ); oldcol = thisInput.value; if ( oldcol.substr( 0, 1 ) == '#' ) { oldcol = oldcol.substr( 1, 6 ); } curcol = oldcol; setPreColors(); setCursor( '1' ); setCol( oldcol ); document.getElementById( 'theoldcell' ).bgColor = '#' + oldcol; currgb = [fromhex( curcol.substr( 0, 2 ) ), fromhex( curcol.substr( 2, 2 ) ), fromhex( curcol.substr( 4, 2 ) )]; curhsl = RGBtoHSL( currgb[0], currgb[1], currgb[2] ); update(); } function fillhtml() { var ctr = 0, nl = "\n", choice = document.getElementById( 'colorchoices' ), custom = document.getElementById( 'colorcustom' ), slide = document.getElementById( 'slider' ), choicehtml = customhtml = '<table border="1">' + nl, slidehtml = '<table width="14">' + nl; customhtml += '<tr>'; for ( var i = 1; i < 193; i++ ) { slidehtml += '<tr><td id="sc' + i + '" height="1" width="14"></td></tr>' + nl; } slide.innerHTML = slidehtml + '</table>' + nl; for ( var i = 1; i < 7; i++ ) { choicehtml += '<tr height="14">' + nl; for ( var j = 1; j < 9; j++ ) { ctr++; choicehtml += '<td height="14" width="14" bgcolor="#' + colorList[ctr] + '" onclick="setCol( \'' + colorList[ctr] + '\' )">' + '<img src="images/blank.gif" width="14" height="14" ' + 'alt="" /></a></td>' + nl; } choicehtml += '</tr>' + nl; } choice.innerHTML = choicehtml + '</table>' + nl; for ( var i = 1; i < 17; i++ ) { customhtml += '<td id="precell' + i + '" bgcolor="#ffffff" onclick="preset( ' + i + ' )"><img src="images/blank.gif" width="14" id="preimg' + i + '" height="14" alt="" /></td>' + nl; if ( i == 8 ) { customhtml += '</tr>' + nl + '<tr>'; } } custom.innerHTML = customhtml + '</tr></table>' + nl; } function setCookie( name, value, expire ) { document.cookie = name + '=' + escape( value ) + ( expire == null ? '' : '; expires=' + expire.toGMTString() ); } function transferColor() { var expires = today = new Date(); expires.setTime( today.getTime() + 864000 ); setCookie( 'webcalendar_custom_colors', precol.join( ',' ), expires ); thisInput.value = '#' + document.getElementById( 'htmlcolor' ).value.toUpperCase(); if ( thisInput.onchange ) { // This updates the color swatch for this color input. It relies on the // <input>s of the prefform having onkeyup = 'updateColor( this );' // as an attribute. thisInput.onchange(); } window.close(); } function getCookie( Name ) { var search = Name + '='; if ( document.cookie.length > 0 ) { // If there are any cookies. offset = document.cookie.indexOf( search ) if ( offset != -1 ) { // if cookie exists offset += search.length // set index of beginning of value end = document.cookie.indexOf( ';', offset ) // set index of end of cookie value if ( end == -1 ) { end = document.cookie.length; } return unescape( document.cookie.substring( offset, end ) ); } } } function fromhex( inval ) { var out = 0; for ( var a = inval.length - 1; a >= 0; a-- ) { out += Math.pow( 16, inval.length - a - 1 ) * hexchars.indexOf( inval.charAt( a ) ); } return out; } function tohex( inval ) { return hexchars.charAt( inval / 16 ) + hexchars.charAt( inval % 16 ); } function setPreColors() { for ( var a = 1; a < 17; a++ ) { document.getElementById( 'precell' + a ).bgColor = '#' + precol[a - 1]; } } function definePreColor() { precol[parseInt( cursorPos ) - 1] = curcol; setPreColors(); setCursor( parseInt( cursorPos ) + 1 > 16 ? 1 : parseInt( cursorPos ) + 1 ); } function preset( what ) { setCol( precol[what - 1] ); setCursor( what ); } function setCursor( what ) { document.getElementById( 'preimg' + cursorPos ).src = blankImg.src; cursorPos = what; document.getElementById( 'preimg' + cursorPos ).src = cursorImg.src; } function update() { document.getElementById( 'thecell' ).bgColor = '#' + curcol; document.getElementById( 'rgb_r' ).value = currgb[0]; document.getElementById( 'rgb_g' ).value = currgb[1]; document.getElementById( 'rgb_b' ).value = currgb[2]; document.getElementById( 'htmlcolor' ).value = curcol; setCursor( cursorPos ); // set the cross on the colorpic var cp = document.getElementById( 'colorpic' ), cross = document.getElementById( 'cross' ).style; xd = yd = 0; lr = cp; while ( lr != null ) { xd += lr.offsetLeft; yd += lr.offsetTop; lr = lr.offsetParent; } cross.top = ( yd - 9 + 191 - 191 * curhsl[1] / 255 ) + 'px'; cross.left = ( xd - 9 + 191 * curhsl[0] / 255 ) + 'px'; // update slider pointer var sa = document.getElementById( 'sliderarrow' ).style; var sp = document.getElementById( 'slider' ); xd = yd = 0; lr = sp; while ( lr != null ) { xd += lr.offsetLeft; yd += lr.offsetTop; lr = lr.offsetParent; } sa.top = ( yd + 187 - 191 * curhsl[2] / 255 ) + 'px'; sa.left = ( xd + 14 ) + 'px' // update slider colors for ( var i = 0; i < 192; i++ ) { rgb = HSLtoRGB( curhsl[0], curhsl[1], 255 - 255 * i / 191 ); document.getElementById( 'sc' + ( i + 1 ) ).bgColor = '#' + tohex( rgb[0] ) + tohex( rgb[1] ) + tohex( rgb[2] ); } } function HSLtoRGB( h, s, l ) { if ( s == 0 ) { return [l, l, l] // achromatic } h = h * 360 / 255; s /= 255; l /= 255; if ( l <= 0.5 ) { rm2 = l + l * s; } else { rm2 = l + s - l * s; } rm1 = 2.0 * l - rm2; return [ToRGB1( rm1, rm2, h + 120.0 ), ToRGB1( rm1, rm2, h ), ToRGB1( rm1, rm2, h - 120.0 )]; } function ToRGB1( rm1, rm2, rh ) { if ( rh > 360.0 ) { rh -= 360.0; } else if ( rh < 0.0 ) { rh += 360.0; } if ( rh < 60.0 ) { rm1 = rm1 + ( rm2 - rm1 ) * rh / 60.0; } else if ( rh < 180.0 ) { rm1 = rm2; } else if ( rh < 240.0 ) { rm1 = rm1 + ( rm2 - rm1 ) * ( 240.0 - rh ) / 60.0; } return Math.round( rm1 * 255 ); } function RGBtoHSL( r, g, b ) { min = Math.min( r, Math.min( g, b ) ); max = Math.max( r, Math.max( g, b ) ); // l l = Math.round( ( max + min ) / 2 ); // achromatic ? if ( max == min ) { h = 160; s = 0; } else { // s if ( l < 128 ) { s = Math.round( 255 * ( max - min ) / ( max + min ) ); } else { s = Math.round( 255 * ( max - min ) / ( 510 - max - min ) ); } // h if ( r == max ) { h = ( g - b ); } else if ( g == max ) { h = 2 + ( b - r ); } else { h = 4 + ( r - g ); } h /= ( max - min ); h *= 60; if ( h < 0 ) { h += 360; } h = Math.round( h * 255 / 360 ); } return [h, s, l]; } function setCol( value ) { value = value.toUpperCase(); if ( value.length != 6 ) { value = curcol; } for ( var a = 0; a < 6; a++ ) if ( hexchars.indexOf( value.charAt( a ) ) == -1 ) { value = curcol; break; } curcol = value; currgb = [fromhex( curcol.substr( 0, 2 ) ), fromhex( curcol.substr( 2, 2 ) ), fromhex( curcol.substr( 4, 2 ) )]; curhsl = RGBtoHSL( currgb[0], currgb[1], currgb[2] ); update(); } function setRGB( r, g, b ) { if ( r > 255 || r < 0 || g > 255 || g < 0 || b > 255 || b < 0 ) { r = currbg[0]; g = currgb[1]; b = currgb[2]; } currgb = [r, g, b]; curcol = tohex( r ) + tohex( g ) + tohex( b ); curhsl = RGBtoHSL( r, g, b ); update(); } function setHSL( h, s, l ) { if ( h > 255 || h < 0 || s > 255 || s < 0 || l > 255 || l < 0 ) { h = curhsl[0]; s = curhsl[1]; l = curhsl[2]; } curhsl = [h, s, l]; currgb = HSLtoRGB( h, s, l ); curcol = tohex( currgb[0] ) + tohex( currgb[1] ) + tohex( currgb[2] ); update(); } function setFromRGB() { r = document.getElementById( 'rgb_r' ).value; g = document.getElementById( 'rgb_g' ).value; b = document.getElementById( 'rgb_b' ).value; setRGB( r, g, b ); } function setFromHTML() { inval = document.getElementById( 'htmlcolor' ).value.toUpperCase(); if ( inval.length != 6 ) { setCol( curcol ); return; } for ( var a = 0; a < 6; a++ ) { if ( hexchars.indexOf( inval.charAt( a ) ) == -1 ) { setCol( curcol ); return; } } setCol( inval ); } function setFromImage( event ) { var x = event.offsetX, y = event.offsetY; if ( x == undefined ) { xd = yd = 0; lr = document.getElementById( 'colorpic' ); while ( lr != null ) { xd += lr.offsetLeft; yd += lr.offsetTop; lr = lr.offsetParent; } x = event.pageX - xd; y = event.pageY - yd; } //prevent lockup if RGB = 000000 or FFFFFF if ( curhsl[2] == 0 || curhsl[2] == 255 ) { curhsl[2] = Math.round( 255 - y * 255 / 191 ); } setHSL( Math.round( x * 255 / 191 ), Math.round( 255 - y * 255 / 191 ), curhsl[2] ); } function setFromSlider( event ) { yd = 0; lr = document.getElementById( 'slider' ); while ( lr != null ) { yd += lr.offsetTop; lr = lr.offsetParent; } y = event.clientY - yd; setHSL( curhsl[0], curhsl[1], Math.round( 255 - y * 255 / 191 ) ); }
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