Sakurai/pdf.js
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Replaces scrollIntoView

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This commit is contained in:
Yury Delendik 2012-08-24 10:12:03 -05:00
parent e0796cef28
commit 2531515f15
1 changed files with 14 additions and 12 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); 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 Cache = function cacheCache(size) {
var data = []; var data = [];
this.push = function cachePush(view) { this.push = function cachePush(view) {
@ -1309,7 +1320,7 @@ var PageView = function pageView(container, pdfPage, id, scale,
this.scrollIntoView = function pageViewScrollIntoView(dest) { this.scrollIntoView = function pageViewScrollIntoView(dest) {
if (!dest) { if (!dest) {
div.scrollIntoView(true); scrollIntoView(div);
return; return;
} }
@ -1368,16 +1379,7 @@ var PageView = function pageView(container, pdfPage, id, scale,
var width = Math.abs(boundingRect[0][0] - boundingRect[1][0]); var width = Math.abs(boundingRect[0][0] - boundingRect[1][0]);
var height = Math.abs(boundingRect[0][1] - boundingRect[1][1]); var height = Math.abs(boundingRect[0][1] - boundingRect[1][1]);
// using temporary div to scroll it into view scrollIntoView(div, {left: x, top: y, width: width, height: height});
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);
}, 0); }, 0);
}; };
@ -2078,7 +2080,7 @@ window.addEventListener('pagechange', function pagechange(evt) {
var last = numVisibleThumbs > 1 ? var last = numVisibleThumbs > 1 ?
visibleThumbs.last.id : first; visibleThumbs.last.id : first;
if (page <= first || page >= last) if (page <= first || page >= last)
thumbnail.scrollIntoView(); scrollIntoView(thumbnail);
} }
} }