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Changeset View
Standalone View
Standalone View
webroot/rsrc/externals/javelin/lib/Vector.js
| Show First 20 Lines • Show All 291 Lines • ▼ Show 20 Lines | getScroll : function() { | ||||
| var b = document.body; | var b = document.body; | ||||
| var e = document.documentElement; | var e = document.documentElement; | ||||
| return new JX.Vector( | return new JX.Vector( | ||||
| window.pageXOffset || b.scrollLeft || e.scrollLeft, | window.pageXOffset || b.scrollLeft || e.scrollLeft, | ||||
| window.pageYOffset || b.scrollTop || e.scrollTop | window.pageYOffset || b.scrollTop || e.scrollTop | ||||
| ); | ); | ||||
| }, | }, | ||||
| /** | |||||
| * Get the aggregate scroll offsets for a node and all of its parents. | |||||
| * | |||||
| * Note that this excludes scroll at the document level, because it does | |||||
| * not normally impact operations in document coordinates, which everything | |||||
| * on this class returns. Use @{method:getScroll} to get the document scroll | |||||
| * position. | |||||
| * | |||||
| * @param Node Node to determine offsets for. | |||||
| * @return JX.Vector New vector with aggregate scroll offsets. | |||||
| */ | |||||
| getAggregateScrollForNode: function(node) { | |||||
btrahan: Nice. This scroll stuff is a pain in the butt and this will help a ton. | |||||
| var x = 0; | |||||
| var y = 0; | |||||
| do { | |||||
| if (node == document.body || node == document.documentElement) { | |||||
| break; | |||||
| } | |||||
| x += node.scrollLeft || 0; | |||||
| y += node.scrollTop || 0; | |||||
| node = node.parentNode; | |||||
| } while (node); | |||||
| return new JX.$V(x, y); | |||||
| }, | |||||
| /** | /** | ||||
| * Determine the size of the viewport (basically, the browser window) by | * Determine the size of the viewport (basically, the browser window) by | ||||
| * building a new vector where the 'x' component corresponds to the width | * building a new vector where the 'x' component corresponds to the width | ||||
| * of the viewport in pixels and the 'y' component corresponds to the height | * of the viewport in pixels and the 'y' component corresponds to the height | ||||
| * of the viewport in pixels. | * of the viewport in pixels. | ||||
| * | * | ||||
| * See also @{method:getScroll}, used to determine the position of the | * See also @{method:getScroll}, used to determine the position of the | ||||
| * viewport, and @{method:getDocument}, used to determine the size of the | * viewport, and @{method:getDocument}, used to determine the size of the | ||||
| ▲ Show 20 Lines • Show All 54 Lines • Show Last 20 Lines | |||||
Nice. This scroll stuff is a pain in the butt and this will help a ton.