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Improve background-repeat accuracy for non int positions

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This commit is contained in:
Niklas von Hertzen 2012-12-29 23:05:49 +02:00
parent c72a02bf64
commit 516edbceea
2 changed files with 15 additions and 21 deletions
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34
src/Parse.js
View File

@ -655,32 +655,26 @@ _html2canvas.Parse = function (images, options) {
}
function renderImage (ctx) {
ctx.drawImage.apply(ctx, Array.prototype.slice.call(arguments,1));
var args = Array.prototype.slice.call(arguments,1);
ctx.drawImage.apply(ctx, args);
numDraws+=1;
}
function renderBackgroundRepeat (ctx, image, x, y, width, height, elx, ely){
var sourceX = 0,
sourceY=0;
if (elx-x>0){
sourceX = elx-x;
}
if (ely-y>0){
sourceY = ely-y;
}
var sourceX = (elx - x > 0) ? elx-x :0,
sourceY= (ely - y > 0) ? ely-y : 0;
renderImage(
ctx,
image,
sourceX, // source X
sourceY, // source Y
width-sourceX, // source Width
height-sourceY, // source Height
x+sourceX, // destination X
y+sourceY, // destination Y
width-sourceX, // destination width
height-sourceY // destination height
Math.floor(sourceX), // source X
Math.floor(sourceY), // source Y
Math.ceil(width-sourceX), // source Width
Math.ceil(height-sourceY), // source Height
Math.ceil(x+sourceX), // destination X
Math.ceil(y+sourceY), // destination Y
Math.ceil(width-sourceX), // destination width
Math.ceil(height-sourceY) // destination height
);
}
@ -695,7 +689,7 @@ _html2canvas.Parse = function (images, options) {
for(bgy=(y + bgp.top);bgy < h + y;){
height = (Math.floor(bgy + image.height) > h + y) ? (h+y) - bgy : image.height;
renderBackgroundRepeat(ctx, image, x+bgp.left, bgy,width, height, x, y);
bgy = Math.floor(bgy + image.height);
bgy = Math.round(bgy + image.height);
}
}
@ -709,7 +703,7 @@ _html2canvas.Parse = function (images, options) {
for (bgx=(x + bgp.left); bgx < w + x;) {
width = (Math.floor(bgx + image.width) > w + x) ? (w + x) - bgx : image.width;
renderBackgroundRepeat(ctx, image, bgx,(y + bgp.top), width, height, x, y);
bgx = Math.floor(bgx + image.width);
bgx = Math.round(bgx + image.width);
}
}

2
tests/assets/jquery.plugin.html2canvas.js
View File

@ -3,7 +3,7 @@
*/
(function( $ ){
$.fn.html2canvas = function(options) {
if (options && options.profile && window.console && window.console.profile) {
if (options && options.profile && window.console && window.console.profile && window.location.search !== "?selenium2") {
console.profile();
}
var date = new Date(),