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Take some more jabs at the new scrolling code. Begin crafting a gecko-shaped voodoo doll.

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This commit is contained in:
Kris Maglione
2009-10-11 03:36:42 -04:00
parent b261b4ba56
commit 1c6e31a73b
1 changed files with 9 additions and 6 deletions
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15
common/content/buffer.js
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@@ -76,21 +76,24 @@ function Buffer() //{{{
function findScrollable(dir, horizontal)
{
let pos = "scrollTop", size = "clientHeight", max = "scrollHeight", overflow = "overflowX",
border1 = "borderTopWidth", border2 = "borderBottomWidth";
let pos = "scrollTop", size = "clientHeight", max = "scrollHeight", layoutSize = "offsetHeight",
overflow = "overflowX", border1 = "borderTopWidth", border2 = "borderBottomWidth";
if (horizontal)
pos = "scrollLeft", size = "clientWidth", max = "scrollWidth", overflow = "overflowX",
border1 = "borderLeftWidth", border2 = "borderRightWidth";
pos = "scrollLeft", size = "clientWidth", max = "scrollWidth", layoutSize = "offsetWidth",
overflow = "overflowX", border1 = "borderLeftWidth", border2 = "borderRightWidth";
function find(elem)
{
for (; elem && elem.parentNode instanceof Element; elem = elem.parentNode)
{
let realSize = elem[size];
let style = util.computedStyle(elem);
let borderSize = parseInt(style[border1]) + parseInt(style[border2]);
let realSize = elem[size];
// Stupid Gecko eccentricities. May fail for quirks mode documents.
if (elem[size] + borderSize == elem[layoutSize] || elem[size] == 0) // Stupid, fallible heuristic.
continue;
if (style[overflow] == "hidden")
realSize += parseInt(style[border1]) + style[border2];
realSize += borderSize;
if (dir < 0 && elem[pos] > 0 || dir > 0 && elem[pos] + realSize < elem[max])
break;
}