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Add support for mouse dragging.

This commit is contained in:
Jon B 2011-09-22 11:40:56 -04:00
parent 54e7cbdf8f
commit e51dba02ac
1 changed files with 15 additions and 1 deletions
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16
include/input.js
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@ -500,11 +500,14 @@ function onMouseButton(e, down) {
return false;
}
var mouse_state = 0;
function onMouseDown(e) {
mouse_state = 1;
onMouseButton(e, 1);
}
function onMouseUp(e) {
mouse_state = 0;
onMouseButton(e, 0);
}
@ -538,7 +541,18 @@ function onMouseMove(e) {
evt = (e ? e : window.event);
pos = Util.getEventPosition(e, conf.target, conf.scale);
//Util.Debug('mouse ' + evt.which + '/' + evt.button + ' up:' + pos.x + "," + pos.y);
if (conf.onMouseMove) {
// If we are currently dragging the mouse (ie. mouse button pressed while moving),
// automatically "release" the mouse button when we are about to exit the viewport.
if (mouse_state == 1 && conf.onMouseButton) {
if (pos.y < 2 || pos.y >= conf.target.clientHeight - 2
|| pos.x < 2 || pos.x >= conf.target.clientWidth - 2)
{
conf.onMouseButton(pos.x, pos.y, 0, 0);
mouse_state = 0;
} else {
conf.onMouseButton(pos.x, pos.y, 1, 1);
}
} else if (conf.onMouseMove) {
conf.onMouseMove(pos.x, pos.y);
}
Util.stopEvent(e);