Kinectic scrolling

[fluddokt]

for SongNodes, Scores, Download Results, Download Info.

[itdelatrisu]

Why is the 't' character different here? ('ｔ')

[itdelatrisu]

This looks fantastic! Thanks for doing this!

Some comments:

• The class should be spelled "Kinetic", not "Kinectic". :P
• When I scroll using my touchscreen (Windows 10 PC), if a previous kinetic scroll is in progress, then tapping the screen will reset the scrolling. Here's a video: https://youtu.be/mbobm_gmGVw
• I think there's a bit too much empty space at the top/bottom of the list.
  
  

I also added a couple of comments in the diff.

[fluddokt]

To the 2 diff comments. Yeah.... accident. I'm just going revert those lines. Since I thought I didn't need it and deleted it, and then added that later on.
Wonder why I keep thinking there is an extra c in kinetic... well I will change it.
I'm not really sure why that happens with the touchscreen.
Could you maybe add some println to pressed, released and dragged and paste a log?
I'll make it so that at least 4 is shown from the top and bottom then.

[itdelatrisu]

Here's some output from the events.

These are the isolated tap and drag events (same for mouse and touchscreen), and they work as expected -- nothing happens on tap, normal scroll on drag.

[[ Tap/Click ]]
Pressed (x=565, y=363)
Clicked (x=565, y=363)
Released (x=565, y=363)

[[ Drag ]]
Pressed (x=620, y=306)
Dragged (oldx=565, oldy=363, newx=616, newy=324)
Dragged (oldx=616, oldy=324, newx=612, newy=341)
Dragged (oldx=612, oldy=341, newx=607, newy=363)
Dragged (oldx=607, oldy=363, newx=603, newy=380)
Dragged (oldx=603, oldy=380, newx=600, newy=401)
Dragged (oldx=600, oldy=401, newx=598, newy=416)
Dragged (oldx=598, oldy=416, newx=595, newy=435)
Dragged (oldx=595, oldy=435, newx=595, newy=446)
Dragged (oldx=595, oldy=446, newx=594, newy=468)
Dragged (oldx=594, oldy=468, newx=594, newy=482)
Dragged (oldx=594, oldy=482, newx=594, newy=497)
Dragged (oldx=594, oldy=497, newx=595, newy=511)
Dragged (oldx=595, oldy=511, newx=597, newy=526)
Dragged (oldx=597, oldy=526, newx=599, newy=536)
Dragged (oldx=599, oldy=536, newx=601, newy=541)
Released (x=601, y=541)

This is for two consecutive mouse drags, which works as expected:

[[ Mouse Drag x2 ]]
Pressed (x=596, y=302)
Dragged (oldx=596, oldy=302, newx=596, newy=303)
Dragged (oldx=596, oldy=303, newx=594, newy=316)
Dragged (oldx=594, oldy=316, newx=594, newy=338)
Dragged (oldx=594, oldy=338, newx=593, newy=364)
Dragged (oldx=593, oldy=364, newx=593, newy=393)
Dragged (oldx=593, oldy=393, newx=593, newy=419)
Dragged (oldx=593, oldy=419, newx=593, newy=449)
Dragged (oldx=593, oldy=449, newx=593, newy=487)
Dragged (oldx=593, oldy=487, newx=593, newy=509)
Dragged (oldx=593, oldy=509, newx=593, newy=530)
Dragged (oldx=593, oldy=530, newx=593, newy=547)
Dragged (oldx=593, oldy=547, newx=593, newy=559)
Dragged (oldx=593, oldy=559, newx=593, newy=568)
Dragged (oldx=593, oldy=568, newx=593, newy=571)
Dragged (oldx=593, oldy=571, newx=593, newy=573)
Released (x=593, y=573)
Pressed (x=611, y=299)
Dragged (oldx=611, oldy=299, newx=611, newy=301)
Dragged (oldx=611, oldy=301, newx=611, newy=313)
Dragged (oldx=611, oldy=313, newx=611, newy=327)
Dragged (oldx=611, oldy=327, newx=608, newy=349)
Dragged (oldx=608, oldy=349, newx=604, newy=381)
Dragged (oldx=604, oldy=381, newx=598, newy=413)
Dragged (oldx=598, oldy=413, newx=598, newy=439)
Dragged (oldx=598, oldy=439, newx=598, newy=467)
Dragged (oldx=598, oldy=467, newx=598, newy=497)
Dragged (oldx=598, oldy=497, newx=603, newy=526)
Dragged (oldx=603, oldy=526, newx=607, newy=555)
Dragged (oldx=607, oldy=555, newx=611, newy=585)
Dragged (oldx=611, oldy=585, newx=618, newy=627)
Dragged (oldx=618, oldy=627, newx=619, newy=641)
Dragged (oldx=619, oldy=641, newx=619, newy=645)
Dragged (oldx=619, oldy=645, newx=619, newy=646)
Released (x=619, y=646)

And this last section, for consecutive touch drags, produces the bug -- first drag is normal, second drag resets the first.

[[ Touch Drag x2 ]]
Pressed (x=673, y=401)
Dragged (oldx=320, oldy=863, newx=673, newy=422)
Dragged (oldx=673, oldy=422, newx=671, newy=435)
Dragged (oldx=671, oldy=435, newx=669, newy=444)
Dragged (oldx=669, oldy=444, newx=668, newy=456)
Dragged (oldx=668, oldy=456, newx=666, newy=468)
Dragged (oldx=666, oldy=468, newx=665, newy=478)
Dragged (oldx=665, oldy=478, newx=664, newy=494)
Dragged (oldx=664, oldy=494, newx=663, newy=508)
Dragged (oldx=663, oldy=508, newx=662, newy=529)
Dragged (oldx=662, oldy=529, newx=662, newy=544)
Dragged (oldx=662, oldy=544, newx=662, newy=563)
Dragged (oldx=662, oldy=563, newx=662, newy=576)
Dragged (oldx=662, oldy=576, newx=663, newy=599)
Dragged (oldx=663, oldy=599, newx=663, newy=604)
Dragged (oldx=663, oldy=604, newx=666, newy=618)
Dragged (oldx=666, oldy=618, newx=666, newy=621)
Released (x=666, y=621)
Pressed (x=661, y=388)
Dragged (oldx=666, oldy=621, newx=659, newy=408)
Dragged (oldx=659, oldy=408, newx=658, newy=416)
Dragged (oldx=658, oldy=416, newx=658, newy=428)
Dragged (oldx=658, oldy=428, newx=658, newy=440)
Dragged (oldx=658, oldy=440, newx=658, newy=448)
Dragged (oldx=658, oldy=448, newx=659, newy=460)
Dragged (oldx=659, oldy=460, newx=659, newy=468)
Dragged (oldx=659, oldy=468, newx=659, newy=475)
Dragged (oldx=659, oldy=475, newx=659, newy=481)
Dragged (oldx=659, oldy=481, newx=659, newy=488)
Dragged (oldx=659, oldy=488, newx=660, newy=497)
Dragged (oldx=660, oldy=497, newx=661, newy=503)
Dragged (oldx=661, oldy=503, newx=662, newy=509)
Dragged (oldx=662, oldy=509, newx=663, newy=513)
Dragged (oldx=663, oldy=513, newx=664, newy=518)
Dragged (oldx=664, oldy=518, newx=665, newy=524)
Dragged (oldx=665, oldy=524, newx=666, newy=532)
Dragged (oldx=666, oldy=532, newx=667, newy=536)
Dragged (oldx=667, oldy=536, newx=668, newy=539)
Dragged (oldx=668, oldy=539, newx=668, newy=542)
Dragged (oldx=668, oldy=542, newx=668, newy=546)
Dragged (oldx=668, oldy=546, newx=668, newy=549)
Dragged (oldx=668, oldy=549, newx=668, newy=554)
Dragged (oldx=668, oldy=554, newx=669, newy=560)
Dragged (oldx=669, oldy=560, newx=669, newy=565)
Dragged (oldx=669, oldy=565, newx=669, newy=570)
Dragged (oldx=669, oldy=570, newx=669, newy=574)
Dragged (oldx=669, oldy=574, newx=669, newy=578)
Dragged (oldx=669, oldy=578, newx=670, newy=584)
Dragged (oldx=670, oldy=584, newx=671, newy=591)
Dragged (oldx=671, oldy=591, newx=671, newy=598)
Dragged (oldx=671, oldy=598, newx=671, newy=602)
Dragged (oldx=671, oldy=602, newx=671, newy=606)
Dragged (oldx=671, oldy=606, newx=671, newy=609)
Released (x=671, y=609)

I think the difference is in the Released -> Pressed -> (first) Dragged events in between the two drags. For mouse input, Pressed (x,y) == Dragged (oldx, oldy), but for touchscreen, Released (x,y) == Dragged (oldx, oldy). That would explain the completely wrong newy - oldy diff value in the first call to mouseDragged().

[fluddokt]

Thanks, try this. I modified slicks input to set oldx, oldy when it gets mousePressed events.
I'm not sure how its actually being set for the mouse...

[itdelatrisu]

Awesome, it works fine now. I'll test a few more things and merge this. Thanks again!