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Changed getIntersectionList for minor performance improvement 

git-svn-id: http://svg-edit.googlecode.com/svn/trunk@478 eee81c28-f429-11dd-99c0-75d572ba1ddd
master
Alexis Deveria 2009-08-26 19:59:52 +00:00
parent 5a62f3b209
commit ecdcbf7d9b
1 changed files with 26 additions and 14 deletions
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40
editor/svgcanvas.js
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@ -569,6 +569,8 @@ function SvgCanvas(c)
var undoStackPointer = 0;
var undoStack = [];
var curBBoxes = [];
// This method sends back an array or a NodeList full of elements that
// intersect the multi-select rubber-band-box.
//
@ -581,29 +583,38 @@ function SvgCanvas(c)
var getIntersectionList = function(rect) {
if (rubberBox == null) { return null; }
if(!curBBoxes.length) {
// Cache all bboxes
var nodes = svgroot.childNodes;
var i = svgroot.childNodes.length;
while (i--) {
// need to do this since the defs has no bbox and causes an exception
// to be thrown in Mozilla
try {
if (nodes[i].id != "selectorParentGroup" && canvas.getBBox(nodes[i])) {
curBBoxes.push({'elem':nodes[i], 'bbox':canvas.getBBox(nodes[i])});
}
} catch(e) {
// do nothing, this element did not have a bbox
}
}
}
var resultList = null;
try {
resultList = svgroot.getIntersectionList(rect, null);
} catch(e) { }
if (resultList == null || typeof(resultList.item) != "function")
{
if (resultList == null || typeof(resultList.item) != "function") {
resultList = [];
var rubberBBox = rubberBox.getBBox();
var nodes = svgroot.childNodes;
var i = svgroot.childNodes.length;
var i = curBBoxes.length;
while (i--) {
// need to do this since the defs has no bbox and causes an exception
// to be thrown in Mozilla
try {
if (nodes[i].id != "selectorParentGroup" &&
Utils.rectsIntersect(rubberBBox, canvas.getBBox(nodes[i])))
{
resultList.push(nodes[i]);
}
} catch(e) {
// do nothing, this element did not have a bbox
if (Utils.rectsIntersect(rubberBBox, curBBoxes[i].bbox)) {
resultList.push(curBBoxes[i].elem);
}
}
}
@ -1765,6 +1776,7 @@ function SvgCanvas(c)
case "multiselect":
if (rubberBox != null) {
rubberBox.setAttribute("display", "none");
curBBoxes = [];
}
current_mode = "select";
case "select":