static gboolean gtkCanvasHChangeValue(GtkRange *range, GtkScrollType scroll, double value, Ihandle *ih)
{
double posx, posy;
IFniff cb;
double xmin = iupAttribGetFloat(ih, "XMIN");
double xmax = iupAttribGetFloat(ih, "XMAX");
double dx = iupAttribGetFloat(ih, "DX");
if (value < xmin) value = xmin;
if (value > xmax-dx) value = xmax-dx;
posx = value;
ih->data->posx = (float)posx;
posy = ih->data->posy;
cb = (IFniff)IupGetCallback(ih,"SCROLL_CB");
if (cb)
{
int op = gtkCanvasScroll2Iup(scroll, 0);
if (op == -1)
return FALSE;
cb(ih, op, (float)posx, (float)posy);
}
else
{
IFnff cb = (IFnff)IupGetCallback(ih,"ACTION");
if (cb)
cb (ih, (float)posx, (float)posy);
}
(void)range;
return FALSE;
}
static gboolean gtkCanvasScrollHorizChangeValue(GtkRange *range, GtkScrollType scroll, double value, Ihandle *ih)
{
int op = gtkCanvasScroll2Iup(scroll, 0);
iupAttribSetInt(ih, "_IUPGTK_SBOP", op);
(void)range;
(void)value;
return FALSE;
}
