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Code Issues Releases Wiki Activity

Optionally adjust scroll targets to allow for a top menu bar

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Fixes #3396
This commit is contained in:
Jermolene
2018-08-16 12:07:50 +01:00
parent f210b75a30
commit 8a38685de9
2 changed files with 17 additions and 1 deletions
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core/modules/utils/dom/scroller.js
+7 -1
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@@ -59,6 +59,12 @@ PageScroller.prototype.scrollIntoView = function(element) {
// Now get ready to scroll the body
this.cancelScroll();
this.startTime = Date.now();
// Get the height of any position:fixed toolbars
var toolbar = document.querySelector(".tc-adjust-top-of-scroll"),
offset = 0;
if(toolbar) {
offset = parseInt(window.getComputedStyle(toolbar).offsetHeight,10);
}
// Get the client bounds of the element and adjust by the scroll position
var getBounds = function() {
var clientBounds = element.getBoundingClientRect(),
@@ -98,7 +104,7 @@ PageScroller.prototype.scrollIntoView = function(element) {
bounds = getBounds(),
endX = getEndPos(bounds.left,bounds.width,scrollPosition.x,window.innerWidth),
endY = getEndPos(bounds.top,bounds.height,scrollPosition.y,window.innerHeight);
window.scrollTo(scrollPosition.x + (endX - scrollPosition.x) * t,scrollPosition.y + (endY - scrollPosition.y) * t);
window.scrollTo(scrollPosition.x + (endX - scrollPosition.x) * t,scrollPosition.y + (endY - scrollPosition.y) * t - offset);
if(t < 1) {
self.idRequestFrame = self.requestAnimationFrame.call(window,drawFrame);
}