Multi-drag doesn't work / sensitivity is off

[baconpaul]

Basically set first duration short and RMB drag that knob across the others - some reset but not enough. Console message that we are deleting something. Probably the modified DnD API got mis0-ported.

[haenkel]

Is this still happening for you?
works alright here.

just one mystery left:
in standalone the "drag-icon" disappears when dragging from left to right
but not when dragging from right to left.
resetting still works both ways.
(the delete message is just a debug out when you let go of the mouse)

[baconpaul]

Sporadically yes. Here's a debug mac build at 8286441

[baconpaul]

oh and of course I'm not mouse upping there.And sometimes it doesn't stop as you can see

[haenkel]

• The delete message still looks to be in sync with you loosing connection (mac mouse messages different? (broken cable? :) )
• Is it the same when dragging from right to left?

Also no alpha render on linux, where you have transparency i get an opaque square.

And how does it behave on windows? ( @mthierman could you try the above described? )

[baconpaul]

Dragging the other direction it dismisses immediately many but not every time.

[baconpaul]

The stack looks like this

[baconpaul]

Stopping in the debugger

 auto q = getTimerInterval();
    if (getTimerInterval() == GLOBAL_VALUE_HOLDER::getInstance()->LONG_MOUSE_DOWN_INTERVAL ||
        getTimerInterval() == 1)
    {
        is_a_long_mouse_down_event = true;
        _owner->on_long_mouse_down();
    }
    else
        _owner->on_mouse_up(*mouse_up_fake);

I see that the timer interval is 1000 and the LONG_HOLD interval is 750. Who knows why?

[baconpaul]

Oh had and I know why and I have a fix. Hold on.

[mthierman]

And how does it behave on windows? ( @mthierman could you try the above described? )

Seems to work fine on windows

[baconpaul]

This is a mac only thing yeah. Here's the comment from my fixing PR #62

The "RMB Drag" gesture on a mac trackpad is two fingers down,
click, drag. Cool. But 2 fingers down can also begin a wheel event.
The mac trackpad is smart enough to not send any motion but it does
generate a zero distance wheel event which B-Step picks up and uses
to interfere with the drag event. So don't start the wheel timer on
a zero distance wheel event.