void scroller::draw_widget(image *screen, int erase) {
int x1, y1, x2, y2;
wig_area(x1, y1, x2, y2);
if (erase)
screen->bar(x1, y1, x2, y2, wm->medium_color());
else
screen->widget_bar(x1, y1, x2, y2, wm->bright_color(),
wm->medium_color(), wm->dark_color());
}
void scroller::handle_event(Event &ev, image *screen, InputManager *inm)
{
int mx=ev.mouse_move.x,my=ev.mouse_move.y;
switch (ev.type)
{
case EV_MOUSE_BUTTON :
{
if (ev.mouse_button && drag==-1)
{
if (mx>=b1x() && mx<b1x()+bw() && my>=b1y()-2 && my<b1y()+bh())
{
if (sx>0)
{
draw_widget(screen,1);
sx--;
draw_widget(screen,0);
scroll_event(sx,screen);
}
} else if (mx>=b2x() && mx<b2x()+bw() && my>=b2y() && my<=b2y()+bh())
{
if (sx<t-1)
{
draw_widget(screen,1);
sx++;
draw_widget(screen,0);
scroll_event(sx,screen);
}
}
else
{
int dx1,dy1,dx2,dy2;
dragger_area(dx1,dy1,dx2,dy2);
if (mx>=dx1 && mx<=dx2 && my>=dy1 && my<=dy2)
{
int x1,y1,x2,y2;
wig_area(x1,y1,x2,y2);
if (mx>=x1 && mx<=x2 && my>=y1 && my<=y2)
{
drag=sx;
inm->grab_focus(this);
}
else if (t>1)
{
int nx=mouse_to_drag(mx,my);
if (nx!=sx && nx>=0 && nx<t)
{
draw_widget(screen,1);
sx=nx;
draw_widget(screen,0);
scroll_event(sx,screen);
}
}
} else handle_inside_event(ev,screen,inm);
}
} else if (!ev.mouse_button && drag!=-1)
{
inm->release_focus();
drag=-1;
}
} break;
case EV_MOUSE_MOVE :
{
if (drag!=-1)
{
int nx=mouse_to_drag(mx,my);
if (nx<0) nx=0; else if (nx>=t) nx=t-1;
if (nx!=sx)
{
draw_widget(screen,1);
sx=nx;
draw_widget(screen,0);
scroll_event(sx,screen);
}
} else if ( activate_on_mouse_move())
{
int x1,y1,x2,y2;
wig_area(x1,y1,x2,y2);
if (mx>=m_pos.x && mx<=m_pos.x+l-1 && my>=m_pos.y && my<=m_pos.y+h-1)
handle_inside_event(ev,screen,inm);
}
} break;
case EV_KEY :
{
switch (ev.key)
{
case JK_LEFT :
{ handle_left(screen,inm); } break;
case JK_RIGHT :
{ handle_right(screen,inm); } break;
case JK_UP :
{ handle_up(screen,inm); } break;
case JK_DOWN :
{ handle_down(screen,inm); } break;
default :
handle_inside_event(ev,screen,inm);
}
} break;
}
}