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From: Jaehwan Kim <jae.hwan.kim@samsung.com> 

Subject: Re: [E-devel] [Patch] The bounce problem in the scroller.

The scroller has a problem when it is scrolled consistently in the end of the edge.
It has an acceleration. If the scrolling occur again before the animation end,?
the scroll-animation (momentum animation) be faster. When it is in the end of the edge,
it does, too. So the content of the scroller disappear because of the acceleration.
The scroller don't need to has the acceleration in the end of edge.

The below is the problem.
http://www.youtube.com/watch?v=Qg7BZrm9EnA

And the below is the scroller which be patched.
http://www.youtube.com/watch?v=lHT6G9WoNSs



SVN revision: 61800
This commit is contained in:
Jaehwan Kim 2011-07-27 09:24:42 +00:00 committed by Carsten Haitzler
parent 4ebfb567bd
commit 159888e059
1 changed files with 8 additions and 2 deletions
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10
legacy/elementary/src/lib/els_scroller.c
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@ -1859,14 +1859,20 @@ _smart_event_mouse_up(void *data, Evas *e, Evas_Object *obj __UNUSED__, void *ev
if ((_elm_config->thumbscroll_friction > 0.0) &&
(vel > _elm_config->thumbscroll_momentum_threshold))
{
int minx, miny, mx, my, px, py;
sd->pan_func.min_get(sd->pan_obj, &minx, &miny);
sd->pan_func.max_get(sd->pan_obj, &mx, &my);
sd->pan_func.get(sd->pan_obj, &px, &py);
sd->down.dx = ((double)dx / at);
sd->down.dy = ((double)dy / at);
if (((sd->down.dx > 0) && (sd->down.pdx > 0)) ||
((sd->down.dx < 0) && (sd->down.pdx < 0)))
sd->down.dx += (double)sd->down.pdx * 1.5; // FIXME: * 1.5 - probably should be config
if (px > minx && px < mx)
sd->down.dx += (double)sd->down.pdx * 1.5; // FIXME: * 1.5 - probably should be config
if (((sd->down.dy > 0) && (sd->down.pdy > 0)) ||
((sd->down.dy < 0) && (sd->down.pdy < 0)))
sd->down.dy += (double)sd->down.pdy * 1.5; // FIXME: * 1.5 - probably should be config
if (py > miny && py < my)
sd->down.dy += (double)sd->down.pdy * 1.5; // FIXME: * 1.5 - probably should be config
if (((sd->down.dx > 0) && (sd->down.pdx > 0)) ||
((sd->down.dx < 0) && (sd->down.pdx < 0)) ||
((sd->down.dy > 0) && (sd->down.pdy > 0)) ||