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Reuse the Tool mousedrag handlign logic for mousemove

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This commit is contained in:
Graeme 2014-12-13 14:52:14 -05:00
parent f193acf31b
commit 5060a18263
1 changed files with 24 additions and 22 deletions
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46
src/tool/Tool.js
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@ -354,30 +354,12 @@ var Tool = PaperScopeItem.extend(/** @lends Tool# */{
// Update global reference to this scope.
paper = this._scope;
// Now handle event callbacks
var called = false;
var called = false, drag = false;
switch (type) {
case 'mousedown':
this._updateEvent(type, point, null, null, true, false, false);
called = this._fireEvent(type, event);
break;
case 'mousedrag':
// In order for idleInterval drag events to work, we need to not
// check the first call for a change of position. Subsequent calls
// required by min/maxDistance functionality will require it,
// otherwise this might loop endlessly.
var needsChange = false,
// If the mouse is moving faster than maxDistance, do not produce
// events for what is left after the first event is generated in
// case it is shorter than maxDistance, as this would produce weird
// results. matchMaxDistance controls this.
matchMaxDistance = false;
while (this._updateEvent(type, point, this.minDistance,
this.maxDistance, false, needsChange, matchMaxDistance)) {
called = this._fireEvent(type, event) || called;
needsChange = true;
matchMaxDistance = true;
}
break;
case 'mouseup':
// If the last mouse drag happened in a different place, call mouse
// drag first, then mouse up.
@ -393,11 +375,31 @@ var Tool = PaperScopeItem.extend(/** @lends Tool# */{
this._updateEvent(type, point, null, null, true, false, false);
this._firstMove = true;
break;
case 'mousedrag':
drag = true;
// Fall through to share event handling
case 'mousemove':
while (this._updateEvent(type, point, this.minDistance,
this.maxDistance, this._firstMove, true, false)) {
var source = !drag && this._firstMove;
// In order for idleInterval drag events to work, we need to not
// check the first call for a change of position. Subsequent calls
// required by min/maxDistance functionality will require it,
// otherwise this might loop endlessly.
var needsChange = !drag;
// If the mouse is moving faster than maxDistance, do not produce
// events for what is left after the first event is generated in
// case it is shorter than maxDistance, as this would produce weird
// results. matchMaxDistance controls this.
var matchMaxDistance = false;
while (this._updateEvent(type, point, this.minDistance, this.maxDistance,
source, needsChange, matchMaxDistance)) {
called = this._fireEvent(type, event) || called;
this._firstMove = false;
if (drag) {
needsChange = true;
matchMaxDistance = true;
} else {
this._firstMove = false;
}
}
break;
}