mirror of
https://github.com/niklasvh/html2canvas.git
synced 2023-08-10 21:13:10 +03:00
refactoring
This commit is contained in:
Niklas von Hertzen
parent
c3e9636e4f
commit
c72a02bf64
358
src/Core.js
358
src/Core.js
@ -7,216 +7,196 @@ html2canvas;
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function h2clog(a) {
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if (_html2canvas.logging && window.console && window.console.log) {
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window.console.log(a);
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}
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if (_html2canvas.logging && window.console && window.console.log) {
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window.console.log(a);
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}
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}
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_html2canvas.Util = {};
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_html2canvas.Util.backgroundImage = function (src) {
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if (/data:image\/.*;base64,/i.test( src ) || /^(-webkit|-moz|linear-gradient|-o-)/.test( src )) {
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return src;
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}
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if (src.toLowerCase().substr( 0, 5 ) === 'url("') {
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src = src.substr( 5 );
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src = src.substr( 0, src.length - 2 );
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} else {
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src = src.substr( 4 );
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src = src.substr( 0, src.length - 1 );
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}
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if (/data:image\/.*;base64,/i.test( src ) || /^(-webkit|-moz|linear-gradient|-o-)/.test( src )) {
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return src;
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}
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if (src.toLowerCase().substr( 0, 5 ) === 'url("') {
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src = src.substr( 5 );
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src = src.substr( 0, src.length - 2 );
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} else {
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src = src.substr( 4 );
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src = src.substr( 0, src.length - 1 );
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}
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return src;
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};
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_html2canvas.Util.Bounds = function getBounds (el) {
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var clientRect,
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bounds = {};
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var clientRect,
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bounds = {};
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if (el.getBoundingClientRect){
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clientRect = el.getBoundingClientRect();
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if (el.getBoundingClientRect){
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clientRect = el.getBoundingClientRect();
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// TODO add scroll position to bounds, so no scrolling of window necessary
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bounds.top = clientRect.top;
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bounds.bottom = clientRect.bottom || (clientRect.top + clientRect.height);
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bounds.left = clientRect.left;
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// TODO add scroll position to bounds, so no scrolling of window necessary
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bounds.top = clientRect.top;
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bounds.bottom = clientRect.bottom || (clientRect.top + clientRect.height);
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bounds.left = clientRect.left;
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// older IE doesn't have width/height, but top/bottom instead
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bounds.width = clientRect.width || (clientRect.right - clientRect.left);
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bounds.height = clientRect.height || (clientRect.bottom - clientRect.top);
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// older IE doesn't have width/height, but top/bottom instead
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bounds.width = clientRect.width || (clientRect.right - clientRect.left);
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bounds.height = clientRect.height || (clientRect.bottom - clientRect.top);
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return bounds;
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return bounds;
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}
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}
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};
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_html2canvas.Util.getCSS = function (el, attribute) {
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// return $(el).css(attribute);
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// return $(el).css(attribute);
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var val;
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var val;
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function toPX( attribute, val ) {
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var rsLeft = el.runtimeStyle && el.runtimeStyle[ attribute ],
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left,
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style = el.style;
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function toPX( attribute, val ) {
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var rsLeft = el.runtimeStyle && el.runtimeStyle[ attribute ],
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left,
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style = el.style;
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// Check if we are not dealing with pixels, (Opera has issues with this)
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// Ported from jQuery css.js
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// From the awesome hack by Dean Edwards
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// http://erik.eae.net/archives/2007/07/27/18.54.15/#comment-102291
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// Check if we are not dealing with pixels, (Opera has issues with this)
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// Ported from jQuery css.js
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// From the awesome hack by Dean Edwards
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// http://erik.eae.net/archives/2007/07/27/18.54.15/#comment-102291
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// If we're not dealing with a regular pixel number
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// but a number that has a weird ending, we need to convert it to pixels
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// If we're not dealing with a regular pixel number
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// but a number that has a weird ending, we need to convert it to pixels
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if ( !/^-?[0-9]+\.?[0-9]*(?:px)?$/i.test( val ) && /^-?\d/.test( val ) ) {
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if ( !/^-?[0-9]+\.?[0-9]*(?:px)?$/i.test( val ) && /^-?\d/.test( val ) ) {
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// Remember the original values
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left = style.left;
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// Remember the original values
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left = style.left;
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// Put in the new values to get a computed value out
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if ( rsLeft ) {
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el.runtimeStyle.left = el.currentStyle.left;
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}
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style.left = attribute === "fontSize" ? "1em" : (val || 0);
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val = style.pixelLeft + "px";
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// Put in the new values to get a computed value out
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if ( rsLeft ) {
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el.runtimeStyle.left = el.currentStyle.left;
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}
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style.left = attribute === "fontSize" ? "1em" : (val || 0);
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val = style.pixelLeft + "px";
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// Revert the changed values
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style.left = left;
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if ( rsLeft ) {
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el.runtimeStyle.left = rsLeft;
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}
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}
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if (!/^(thin|medium|thick)$/i.test( val )) {
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return Math.round(parseFloat( val )) + "px";
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}
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return val;
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// Revert the changed values
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style.left = left;
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if ( rsLeft ) {
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el.runtimeStyle.left = rsLeft;
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}
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}
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if ( window.getComputedStyle ) {
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if ( previousElement !== el ) {
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computedCSS = document.defaultView.getComputedStyle(el, null);
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}
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val = computedCSS[ attribute ];
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if ( attribute === "backgroundPosition" ) {
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val = (val.split(",")[0] || "0 0").split(" ");
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val[ 0 ] = ( val[0].indexOf( "%" ) === -1 ) ? toPX( attribute + "X", val[ 0 ] ) : val[ 0 ];
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val[ 1 ] = ( val[1] === undefined ) ? val[0] : val[1]; // IE 9 doesn't return double digit always
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val[ 1 ] = ( val[1].indexOf( "%" ) === -1 ) ? toPX( attribute + "Y", val[ 1 ] ) : val[ 1 ];
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} else if ( /border(Top|Bottom)(Left|Right)Radius/.test( attribute) ) {
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var arr = val.split(" ");
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if ( arr.length <= 1 ) {
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arr[ 1 ] = arr[ 0 ];
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}
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arr[ 0 ] = parseInt( arr[ 0 ], 10 );
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arr[ 1 ] = parseInt( arr[ 1 ], 10 );
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val = arr;
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}
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} else if ( el.currentStyle ) {
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// IE 9>
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if (attribute === "backgroundPosition") {
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// Older IE uses -x and -y
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val = [ toPX( attribute + "X", el.currentStyle[ attribute + "X" ] ), toPX( attribute + "Y", el.currentStyle[ attribute + "Y" ] ) ];
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} else {
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val = toPX( attribute, el.currentStyle[ attribute ] );
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if (/^(border)/i.test( attribute ) && /^(medium|thin|thick)$/i.test( val )) {
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switch (val) {
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case "thin":
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val = "1px";
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break;
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case "medium":
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val = "0px"; // this is wrong, it should be 3px but IE uses medium for no border as well.. TODO find a work around
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break;
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case "thick":
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val = "5px";
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break;
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}
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}
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}
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if (!/^(thin|medium|thick)$/i.test( val )) {
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return Math.round(parseFloat( val )) + "px";
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}
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return val;
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}
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//return $(el).css(attribute);
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if ( window.getComputedStyle ) {
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if ( previousElement !== el ) {
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computedCSS = document.defaultView.getComputedStyle(el, null);
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}
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val = computedCSS[ attribute ];
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if ( attribute === "backgroundPosition" ) {
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val = (val.split(",")[0] || "0 0").split(" ");
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val[ 0 ] = ( val[0].indexOf( "%" ) === -1 ) ? toPX( attribute + "X", val[ 0 ] ) : val[ 0 ];
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val[ 1 ] = ( val[1] === undefined ) ? val[0] : val[1]; // IE 9 doesn't return double digit always
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val[ 1 ] = ( val[1].indexOf( "%" ) === -1 ) ? toPX( attribute + "Y", val[ 1 ] ) : val[ 1 ];
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} else if ( /border(Top|Bottom)(Left|Right)Radius/.test( attribute) ) {
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var arr = val.split(" ");
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if ( arr.length <= 1 ) {
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arr[ 1 ] = arr[ 0 ];
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}
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arr[ 0 ] = parseInt( arr[ 0 ], 10 );
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arr[ 1 ] = parseInt( arr[ 1 ], 10 );
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val = arr;
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}
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} else if ( el.currentStyle ) {
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// IE 9>
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if (attribute === "backgroundPosition") {
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// Older IE uses -x and -y
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val = [ toPX( attribute + "X", el.currentStyle[ attribute + "X" ] ), toPX( attribute + "Y", el.currentStyle[ attribute + "Y" ] ) ];
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} else {
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val = toPX( attribute, el.currentStyle[ attribute ] );
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if (/^(border)/i.test( attribute ) && /^(medium|thin|thick)$/i.test( val )) {
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switch (val) {
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case "thin":
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val = "1px";
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break;
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case "medium":
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val = "0px"; // this is wrong, it should be 3px but IE uses medium for no border as well.. TODO find a work around
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break;
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case "thick":
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val = "5px";
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break;
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}
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}
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}
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}
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return val;
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};
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_html2canvas.Util.BackgroundPosition = function ( el, bounds, image ) {
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// TODO add support for multi image backgrounds
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// TODO add support for multi image backgrounds
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var bgposition = _html2canvas.Util.getCSS( el, "backgroundPosition" ) ,
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topPos,
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left,
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percentage,
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val;
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var bgposition = _html2canvas.Util.getCSS( el, "backgroundPosition" ) ,
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topPos,
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left,
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percentage,
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val;
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if (bgposition.length === 1){
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val = bgposition;
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if (bgposition.length === 1){
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val = bgposition;
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bgposition = [];
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bgposition = [];
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bgposition[0] = val;
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bgposition[1] = val;
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}
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bgposition[0] = val;
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bgposition[1] = val;
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}
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if (bgposition[0].toString().indexOf("%") !== -1){
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percentage = (parseFloat(bgposition[0])/100);
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left = ((bounds.width * percentage)-(image.width*percentage));
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} else {
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left = parseInt(bgposition[0],10);
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}
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if (bgposition[1].toString().indexOf("%") !== -1){
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percentage = (parseFloat(bgposition[1])/100);
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topPos = ((bounds.height * percentage)-(image.height*percentage));
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} else {
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topPos = parseInt(bgposition[1],10);
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}
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if (bgposition[0].toString().indexOf("%") !== -1){
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percentage = (parseFloat(bgposition[0])/100);
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left = ((bounds.width * percentage)-(image.width*percentage));
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}else{
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left = parseInt(bgposition[0],10);
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}
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if (bgposition[1].toString().indexOf("%") !== -1){
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percentage = (parseFloat(bgposition[1])/100);
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topPos = ((bounds.height * percentage)-(image.height*percentage));
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}else{
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topPos = parseInt(bgposition[1],10);
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}
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return {
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top: topPos,
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left: left
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};
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return {
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top: topPos,
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left: left
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};
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};
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_html2canvas.Util.Extend = function (options, defaults) {
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for (var key in options) {
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if (options.hasOwnProperty(key)) {
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defaults[key] = options[key];
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}
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for (var key in options) {
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if (options.hasOwnProperty(key)) {
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defaults[key] = options[key];
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}
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return defaults;
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}
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return defaults;
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};
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@ -229,43 +209,43 @@ _html2canvas.Util.Extend = function (options, defaults) {
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_html2canvas.Util.Children = function( elem ) {
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var children;
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try {
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var children;
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try {
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children = (elem.nodeName && elem.nodeName.toUpperCase() === "IFRAME") ?
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elem.contentDocument || elem.contentWindow.document : (function( array ){
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var ret = [];
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children = (elem.nodeName && elem.nodeName.toUpperCase() === "IFRAME") ?
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elem.contentDocument || elem.contentWindow.document : (function( array ){
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var ret = [];
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if ( array !== null ) {
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if ( array !== null ) {
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(function( first, second ) {
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var i = first.length,
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j = 0;
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if ( typeof second.length === "number" ) {
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for ( var l = second.length; j < l; j++ ) {
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first[ i++ ] = second[ j ];
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}
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} else {
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while ( second[j] !== undefined ) {
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first[ i++ ] = second[ j++ ];
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}
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}
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first.length = i;
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return first;
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})( ret, array );
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(function( first, second ) {
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var i = first.length,
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j = 0;
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if ( typeof second.length === "number" ) {
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for ( var l = second.length; j < l; j++ ) {
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first[ i++ ] = second[ j ];
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}
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return ret;
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})( elem.childNodes );
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} else {
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while ( second[j] !== undefined ) {
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first[ i++ ] = second[ j++ ];
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}
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}
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} catch (ex) {
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h2clog("html2canvas.Util.Children failed with exception: " + ex.message);
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children = [];
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}
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return children;
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first.length = i;
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return first;
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})( ret, array );
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}
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return ret;
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})( elem.childNodes );
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} catch (ex) {
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h2clog("html2canvas.Util.Children failed with exception: " + ex.message);
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children = [];
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}
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return children;
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};
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104
src/Renderer.js
104
src/Renderer.js
@ -1,66 +1,58 @@
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_html2canvas.Renderer = function(parseQueue, options){
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var queue = [], renderer;
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function sortZ(zStack){
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var subStacks = [],
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stackValues = [],
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zStackChildren = zStack.children,
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s,
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i,
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stackLen,
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zValue,
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zLen,
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stackChild,
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b,
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subStackLen;
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function createRenderQueue(parseQueue) {
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var queue = [];
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var sortZ = function(zStack){
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var subStacks = [],
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stackValues = [];
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for (s = 0, zLen = zStackChildren.length; s < zLen; s+=1){
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stackChild = zStackChildren[s];
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if (stackChild.children && stackChild.children.length > 0){
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subStacks.push(stackChild);
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stackValues.push(stackChild.zindex);
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}else{
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queue.push(stackChild);
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}
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}
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stackValues.sort(function(a, b) {
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return a - b;
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});
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for (i = 0, stackLen = stackValues.length; i < stackLen; i+=1){
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zValue = stackValues[i];
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for (b = 0, subStackLen = subStacks.length; b <= subStackLen; b+=1){
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if (subStacks[b].zindex === zValue){
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stackChild = subStacks.splice(b, 1);
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sortZ(stackChild[0]);
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break;
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zStack.children.forEach(function(stackChild) {
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if (stackChild.children && stackChild.children.length > 0){
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subStacks.push(stackChild);
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stackValues.push(stackChild.zindex);
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} else {
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queue.push(stackChild);
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}
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}
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});
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stackValues.sort(function(a, b) {
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return a - b;
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});
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stackValues.forEach(function(zValue) {
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var index;
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subStacks.some(function(stack, i){
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index = i;
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return (stack.zindex === zValue);
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});
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sortZ(subStacks.splice(index, 1)[0]);
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});
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};
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sortZ(parseQueue.zIndex);
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return queue;
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}
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function getRenderer(rendererName) {
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var renderer;
|
||||
|
||||
if (typeof options.renderer === "string" && _html2canvas.Renderer[rendererName] !== undefined) {
|
||||
renderer = _html2canvas.Renderer[rendererName](options);
|
||||
} else if (typeof rendererName === "function") {
|
||||
renderer = rendererName(options);
|
||||
} else {
|
||||
throw new Error("Unknown renderer");
|
||||
}
|
||||
|
||||
if ( typeof renderer._create !== "function" ) {
|
||||
throw new Error("Invalid renderer defined");
|
||||
}
|
||||
return renderer;
|
||||
}
|
||||
|
||||
sortZ(parseQueue.zIndex);
|
||||
|
||||
if (typeof options.renderer === "string" && _html2canvas.Renderer[options.renderer] !== undefined) {
|
||||
renderer = _html2canvas.Renderer[options.renderer](options);
|
||||
} else if (typeof options.renderer === "function") {
|
||||
renderer = options.renderer(options);
|
||||
} else {
|
||||
throw new Error("Unknown renderer");
|
||||
}
|
||||
|
||||
if ( typeof renderer._create !== "function" ) {
|
||||
throw new Error("Invalid renderer defined");
|
||||
}
|
||||
|
||||
return renderer._create( parseQueue, options, document, queue, _html2canvas );
|
||||
|
||||
return getRenderer(options.renderer)._create(parseQueue, options, document, createRenderQueue(parseQueue), _html2canvas);
|
||||
};
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user