startDrag or customStartDrag???

[Gekke_Hollander]

Just pondering...

I've been working on a project for a while. My first big one in Flash for over a year... and I ran into something funny... well to me it was

When I use startDrag() to make a mc follow the mouse it works ok. The mc follows the mouse as long as the mouse is over the stage. Moving the mouse outside of the stage pauzes the dragging action untill the mouse is within the stage boundries again...

But when I do something like:

// in case of lock to center
_root.draggable_mc.onMouseMove = function()
{
_root.draggable_mc._x = _root._xmouse-(_root.draggable_mc._width/2);
_root.draggable_mc._y = _root._ymouse-(_root.draggable_mc._height/2);
}

// in case of not locking to center but to the point clicked
_root.draggable_mc.onPress = function()
{
_root.dragMc_x_mouseOffset = _root._xmouse-_root.draggable_mc._x;
_root.dragMc_y_mouseOffset = _root._ymouse-_root.draggable_mc._y;
}

_root.draggable_mc.onMouseMove = function()
{
_root.draggable_mc._x = _root._xmouse_root.dragMc_x_mouseOffset;
_root.draggable_mc._y = _root._ymouse_root.dragMc_y_mouseOffset;
}

Imagine the code you'll need with a constrained set... believe me, it's quiet long. So why doing this? The mc keeps on following the mouse even when the mouse is out of the stage boundries... which can be very usefull in some cases.

But because this will need quiet some coding I was wondering if this same effect is possible with startDrag. Ofcourse not in the standard way but maybe with some different settings...

Like I said, just pondering

cheers

[gorlummeeguvnor]

your code doesn't work for me.
neither of the two code ideas (as far as i can see) work outside the stage area - dragging stops .
use updateAfterEvent() for mouseMove - makes for a much smoother drad

[Gekke_Hollander]

Sorry, was a bit sloppy!

Here's the code + an example:

// regular drag with constrain & no lock center
_root.drag_square.onPress = function() {
	ds_t = _root.constrain_field._y;
	ds_l = _root.constrain_field._x;
	ds_r = (_root.constrain_field._x+_root.constrain_field._width)-_root.drag_square._width;
	ds_b = (_root.constrain_field._y+_root.constrain_field._height)-_root.drag_square._height;
	this.startDrag(false, ds_l, ds_t, ds_r, ds_b);
	this.onMouseMove = function() {
		updateAfterEvent();
	}
};
_root.drag_square.onRelease = _root.drag_square.onReleaseOutside=function () {
	this.stopDrag();
	updateAfterEvent();
};

And here's my work around:

// custom drag with constrain & no lock center
_root.drag_square.onPress = function() {
	_root.ds_x_mouseOffset = _root._xmouse-_root.drag_square._x;
	_root.ds_y_mouseOffset = _root._ymouse-_root.drag_square._y;
	ds_t = _root.constrain_field._y;
	ds_l = _root.constrain_field._x;
	ds_r = (_root.constrain_field._x+_root.constrain_field._width)-_root.drag_square._width;
	ds_b = (_root.constrain_field._y+_root.constrain_field._height)-_root.drag_square._height;
	this.onMouseMove = function() {
		new_drag_square_x = _root._xmouse-_root.ds_x_mouseOffset;
		if (new_drag_square_x<ds_l) {
			new_drag_square_x = ds_l;
		} else if (new_drag_square_x>ds_r) {
			new_drag_square_x = ds_r;
		}
		_root.drag_square._x = new_drag_square_x;
		new_drag_square_y = _root._ymouse-_root.ds_y_mouseOffset;
		if (new_drag_square_y<ds_t) {
			new_drag_square_y = ds_t;
		} else if (new_drag_square_y>ds_b) {
			new_drag_square_y = ds_b;
		}
		_root.drag_square._y = new_drag_square_y;
		updateAfterEvent();
	};
};
_root.drag_square.onRelease = _root.drag_square.onReleaseOutside=function () {
	delete this.onMouseMove;
	updateAfterEvent();
};

What do you think? the second code works even if the mouse is outside the swf/stage....

Cheers

[Gekke_Hollander]

I serached on other forums for any posts on this topic but to no avail... guess the same result isn't possible with startDrag...

Cheers

[stalyun38]

I have a map that i'm working on that basically sets up like this:
map inside mask, when zoomed you see a portion of the map through
the mask window, map is draggable (with inertia) and the problem is I cannot
keep the map from crossing a preset "ZoomMargin" mc on the root timeline.

visual:
http://dev.emeraldcoast.com/seatown...t/flashMap.html

Any help would be appreciated

Thanks