CalvinBackup/iD
1
0
Fork 0
mirror of https://github.com/FoggedLens/iD.git synced 2026-03-19 09:33:32 +00:00
Code Issues Packages Projects Releases Wiki Activity

Merge pull request #1079 from systemed/prevent-drag

Browse Source 
prevent accidental drags
This commit is contained in:
Tom MacWright
2013-03-29 11:16:34 -07:00
parent e6de98398b b7760e8747
commit 52dd7bf869
1 changed files with 24 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
js/id/behavior/drag.js
View File

@@ -111,12 +111,30 @@ iD.behavior.drag = function() {
}
}
var lastPos = [[0, 0], [0, 0]],
lastTimes = [0, 0];
function move() {
lastPos.push([d3.event.clientX, d3.event.clientY]);
lastTimes.push((new Date()).getTime());
lastTimes.shift();
lastPos.shift();
}
function drag(selection) {
var matchesSelector = iD.util.prefixDOMProperty('matchesSelector'),
delegate = mousedown;
if (selector) {
delegate = function() {
var velocity = Math.sqrt(
Math.pow(lastPos[0][0] - d3.event.clientX, 2),
Math.pow(lastPos[0][1] - d3.event.clientY, 2)) /
((new Date()).getTime() - lastTimes[0]);
if (velocity > 0.05) return;
var root = this,
target = d3.event.target;
for (; target && target !== root; target = target.parentNode) {
@@ -128,12 +146,16 @@ iD.behavior.drag = function() {
};
}
selection.on("mousedown.drag" + selector, delegate)
selection
.on("mousemove.drag" + selector, move)
.on("mousedown.drag" + selector, delegate)
.on("touchstart.drag" + selector, delegate);
}
drag.off = function(selection) {
selection.on("mousedown.drag" + selector, null)
selection
.on("mousemove.drag" + selector, null)
.on("mousedown.drag" + selector, null)
.on("touchstart.drag" + selector, null);
};