WordPress/wp-admin/js/svg-painter.js

239 lines
5.4 KiB
JavaScript

/**
* Attempt to re-color SVG icons used in the admin menu or the toolbar
*
* @output wp-admin/js/svg-painter.js
*/
window.wp = window.wp || {};
wp.svgPainter = ( function( $, window, document, undefined ) {
'use strict';
var selector, base64, painter,
colorscheme = {},
elements = [];
$(document).ready( function() {
// Detection for browser SVG capability.
if ( document.implementation.hasFeature( 'http://www.w3.org/TR/SVG11/feature#Image', '1.1' ) ) {
$( document.body ).removeClass( 'no-svg' ).addClass( 'svg' );
wp.svgPainter.init();
}
});
/**
* Needed only for IE9
*
* Based on jquery.base64.js 0.0.3 - https://github.com/yckart/jquery.base64.js
*
* Based on: https://gist.github.com/Yaffle/1284012
*
* Copyright (c) 2012 Yannick Albert (http://yckart.com)
* Licensed under the MIT license
* http://www.opensource.org/licenses/mit-license.php
*/
base64 = ( function() {
var c,
b64 = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/',
a256 = '',
r64 = [256],
r256 = [256],
i = 0;
function init() {
while( i < 256 ) {
c = String.fromCharCode(i);
a256 += c;
r256[i] = i;
r64[i] = b64.indexOf(c);
++i;
}
}
function code( s, discard, alpha, beta, w1, w2 ) {
var tmp, length,
buffer = 0,
i = 0,
result = '',
bitsInBuffer = 0;
s = String(s);
length = s.length;
while( i < length ) {
c = s.charCodeAt(i);
c = c < 256 ? alpha[c] : -1;
buffer = ( buffer << w1 ) + c;
bitsInBuffer += w1;
while( bitsInBuffer >= w2 ) {
bitsInBuffer -= w2;
tmp = buffer >> bitsInBuffer;
result += beta.charAt(tmp);
buffer ^= tmp << bitsInBuffer;
}
++i;
}
if ( ! discard && bitsInBuffer > 0 ) {
result += beta.charAt( buffer << ( w2 - bitsInBuffer ) );
}
return result;
}
function btoa( plain ) {
if ( ! c ) {
init();
}
plain = code( plain, false, r256, b64, 8, 6 );
return plain + '===='.slice( ( plain.length % 4 ) || 4 );
}
function atob( coded ) {
var i;
if ( ! c ) {
init();
}
coded = coded.replace( /[^A-Za-z0-9\+\/\=]/g, '' );
coded = String(coded).split('=');
i = coded.length;
do {
--i;
coded[i] = code( coded[i], true, r64, a256, 6, 8 );
} while ( i > 0 );
coded = coded.join('');
return coded;
}
return {
atob: atob,
btoa: btoa
};
})();
return {
init: function() {
painter = this;
selector = $( '#adminmenu .wp-menu-image, #wpadminbar .ab-item' );
this.setColors();
this.findElements();
this.paint();
},
setColors: function( colors ) {
if ( typeof colors === 'undefined' && typeof window._wpColorScheme !== 'undefined' ) {
colors = window._wpColorScheme;
}
if ( colors && colors.icons && colors.icons.base && colors.icons.current && colors.icons.focus ) {
colorscheme = colors.icons;
}
},
findElements: function() {
selector.each( function() {
var $this = $(this), bgImage = $this.css( 'background-image' );
if ( bgImage && bgImage.indexOf( 'data:image/svg+xml;base64' ) != -1 ) {
elements.push( $this );
}
});
},
paint: function() {
// Loop through all elements.
$.each( elements, function( index, $element ) {
var $menuitem = $element.parent().parent();
if ( $menuitem.hasClass( 'current' ) || $menuitem.hasClass( 'wp-has-current-submenu' ) ) {
// Paint icon in 'current' color.
painter.paintElement( $element, 'current' );
} else {
// Paint icon in base color.
painter.paintElement( $element, 'base' );
// Set hover callbacks.
$menuitem.on( 'mouseenter', function() {
painter.paintElement( $element, 'focus' );
} ).on( 'mouseleave', function() {
// Match the delay from hoverIntent.
window.setTimeout( function() {
painter.paintElement( $element, 'base' );
}, 100 );
} );
}
});
},
paintElement: function( $element, colorType ) {
var xml, encoded, color;
if ( ! colorType || ! colorscheme.hasOwnProperty( colorType ) ) {
return;
}
color = colorscheme[ colorType ];
// Only accept hex colors: #101 or #101010.
if ( ! color.match( /^(#[0-9a-f]{3}|#[0-9a-f]{6})$/i ) ) {
return;
}
xml = $element.data( 'wp-ui-svg-' + color );
if ( xml === 'none' ) {
return;
}
if ( ! xml ) {
encoded = $element.css( 'background-image' ).match( /.+data:image\/svg\+xml;base64,([A-Za-z0-9\+\/\=]+)/ );
if ( ! encoded || ! encoded[1] ) {
$element.data( 'wp-ui-svg-' + color, 'none' );
return;
}
try {
if ( 'atob' in window ) {
xml = window.atob( encoded[1] );
} else {
xml = base64.atob( encoded[1] );
}
} catch ( error ) {}
if ( xml ) {
// Replace `fill` attributes.
xml = xml.replace( /fill="(.+?)"/g, 'fill="' + color + '"');
// Replace `style` attributes.
xml = xml.replace( /style="(.+?)"/g, 'style="fill:' + color + '"');
// Replace `fill` properties in `<style>` tags.
xml = xml.replace( /fill:.*?;/g, 'fill: ' + color + ';');
if ( 'btoa' in window ) {
xml = window.btoa( xml );
} else {
xml = base64.btoa( xml );
}
$element.data( 'wp-ui-svg-' + color, xml );
} else {
$element.data( 'wp-ui-svg-' + color, 'none' );
return;
}
}
$element.attr( 'style', 'background-image: url("data:image/svg+xml;base64,' + xml + '") !important;' );
}
};
})( jQuery, window, document );