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Bug 623485 - Use transforms to move scrollbars [r=vingtetun]

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This commit is contained in:
Benjamin Stover 2011-01-26 15:56:38 +01:00
parent d9216fe2d7
commit 62ac07e1cc
1 changed files with 6 additions and 7 deletions
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13
mobile/chrome/content/browser.js
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@ -1292,21 +1292,20 @@ Browser.MainDragger.prototype = {
let scaleX = this._scrollScales.x, scaleY = this._scrollScales.y;
let contentScroll = Browser.getScrollboxPosition(Browser.contentScrollboxScroller);
if (scaleX)
this._horizontalScrollbar.left = contentScroll.x * scaleX;
this._horizontalScrollbar.style.MozTransform = "translateX(" + Math.round(contentScroll.x * scaleX) + "px)";
if (scaleY) {
const SCROLLER_MARGIN = 2;
this._verticalScrollbar.top = contentScroll.y * scaleY;
let y = Math.round(contentScroll.y * scaleY);
// right scrollbar is out of view when showing the left sidebar,
// the 'solution' for now is to reposition it if needed
let x = 0;
if (Browser.floatedWhileDragging) {
let [leftVis,,leftW,] = Browser.computeSidebarVisibility();
this._verticalScrollbar.setAttribute("right", Math.max(SCROLLER_MARGIN, leftW * leftVis + SCROLLER_MARGIN));
}
else if (this._verticalScrollbar.getAttribute("right") != SCROLLER_MARGIN) {
this._verticalScrollbar.setAttribute("right", SCROLLER_MARGIN);
x = Math.round(Math.max(0, leftW * leftVis));
}
this._verticalScrollbar.style.MozTransform = "translate(" + x + "px," + y + "px)";
}
},