yetangitu/pdf.js
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Merge pull request #2023 from yurydelendik/scrollIntoView

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Replaces scrollIntoView
This commit is contained in:
Brendan Dahl 2012-08-27 12:14:02 -07:00
commit 57866c514b
2 changed files with 21 additions and 27 deletions
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26
web/viewer.js
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@ -33,6 +33,17 @@ function getFileName(url) {
return url.substring(url.lastIndexOf('/', end) + 1, end);
}
function scrollIntoView(element, spot) {
var parent = element.offsetParent, offsetY = element.offsetTop;
while (parent.clientHeight == parent.scrollHeight) {
offsetY += parent.offsetTop;
parent = parent.offsetParent;
}
if (spot)
offsetY += spot.top;
parent.scrollTop = offsetY;
}
var Cache = function cacheCache(size) {
var data = [];
this.push = function cachePush(view) {
@ -1315,7 +1326,7 @@ var PageView = function pageView(container, pdfPage, id, scale,
this.scrollIntoView = function pageViewScrollIntoView(dest) {
if (!dest) {
div.scrollIntoView(true);
scrollIntoView(div);
return;
}
@ -1374,16 +1385,7 @@ var PageView = function pageView(container, pdfPage, id, scale,
var width = Math.abs(boundingRect[0][0] - boundingRect[1][0]);
var height = Math.abs(boundingRect[0][1] - boundingRect[1][1]);
// using temporary div to scroll it into view
var tempDiv = document.createElement('div');
tempDiv.style.position = 'absolute';
tempDiv.style.left = Math.floor(x) + 'px';
tempDiv.style.top = Math.floor(y) + 'px';
tempDiv.style.width = Math.ceil(width) + 'px';
tempDiv.style.height = Math.ceil(height) + 'px';
div.appendChild(tempDiv);
tempDiv.scrollIntoView(true);
div.removeChild(tempDiv);
scrollIntoView(div, {left: x, top: y, width: width, height: height});
}, 0);
};
@ -2084,7 +2086,7 @@ window.addEventListener('pagechange', function pagechange(evt) {
var last = numVisibleThumbs > 1 ?
visibleThumbs.last.id : first;
if (page <= first || page >= last)
thumbnail.scrollIntoView();
scrollIntoView(thumbnail);
}
}