/**
* Scroll score horizontally
*
*/
static void
h_scroll (gdouble value, DenemoProject * gui)
{
gint dest;
if ((dest = (gint) (value + 0.5)) != gui->movement->leftmeasurenum)
{
set_viewport_transition (dest - gui->movement->leftmeasurenum);
gui->movement->leftmeasurenum = dest;
set_rightmeasurenum (gui->movement);
if (gui->movement->currentmeasurenum > gui->movement->rightmeasurenum)
{
gui->movement->currentmeasurenum = gui->movement->rightmeasurenum;
}
else if (gui->movement->currentmeasurenum < gui->movement->leftmeasurenum)
{
gui->movement->currentmeasurenum = gui->movement->leftmeasurenum;
}
find_leftmost_allcontexts (gui->movement);
setcurrents (gui->movement);
draw_score_area();
}
update_hscrollbar (gui);
}
/**
* Advance the leftmeasurenum until currentmeasurenum is before rightmeasurenum
* then adjust rightmeasurenum to match.
*/
void
isoffrightside (DenemoProject * gui)
{
if (gui->movement->currentmeasurenum <= gui->movement->rightmeasurenum)
return;
while (gui->movement->currentmeasurenum > gui->movement->rightmeasurenum)
{
gui->movement->leftmeasurenum += MAX ((gui->movement->rightmeasurenum - gui->movement->leftmeasurenum + 1) / 2, 1);
set_rightmeasurenum (gui->movement);
}
find_leftmost_allcontexts (gui->movement);
if(!Denemo.non_interactive)
update_hscrollbar (gui);
}
/**
* Sets the si->currentmeasurenum to the given value
* if exists, making it the leftmost measure visible, not extending selection
*
*/
static gboolean
goto_currentmeasurenum (gint dest, gint leftmeasurenum)
{
DenemoProject *gui = Denemo.project;
if ((dest > 0) && (dest <= (gint) (g_list_length (gui->movement->measurewidths))))
{
//gui->movement->leftmeasurenum = dest;
gui->movement->currentmeasurenum = dest;
if(leftmeasurenum)
gui->movement->leftmeasurenum = leftmeasurenum;
set_rightmeasurenum (gui->movement);
if ((dest < gui->movement->leftmeasurenum) || (dest > gui->movement->rightmeasurenum))
center_viewport ();
setcurrents (gui->movement);
set_rightmeasurenum (gui->movement);
find_leftmost_allcontexts (gui->movement);
if(!Denemo.non_interactive)
update_hscrollbar (gui);
draw_score_area();
return TRUE;
}
return FALSE;
}
