static void
GetDefaultPosition(
Widget child,
Widget parent,
Position *xRtn,
Position *yRtn )
{
Display *disp;
int max_w, max_h;
Position x, y;
x = HALFDIFF(XtWidth(parent), XtWidth(child));
y = HALFDIFF(XtHeight(parent), XtHeight(child));
/*
* find root co-ords of the parent's center
*/
if (XtIsRealized (parent))
XtTranslateCoords(parent, x, y, &x, &y);
/*
* try to keep the popup from dribbling off the display
*/
disp = XtDisplay (child);
max_w = DisplayWidth (disp, DefaultScreen (disp));
max_h = DisplayHeight (disp, DefaultScreen (disp));
if ((x + (int)TotalWidth (child)) > max_w)
x = max_w - TotalWidth (child);
if ((y + (int)TotalHeight (child)) > max_h)
y = max_h - TotalHeight (child);
if (x < 0) x = 0;
if (y < 0) y = 0;
*xRtn = x;
*yRtn = y;
}
void PopupMenu::updateLayout(void)
{
//Determine the Max Preferred Width of my MenuItems
Real32 MaxWidth(0);
Real32 TotalHeight(0);
for(UInt32 i(0) ; i<getMFChildren()->size() ; ++i)
{
if(MaxWidth < getChildren(i)->getRequestedSize().x())
{
MaxWidth = getChildren(i)->getRequestedSize().x();
}
TotalHeight += getChildren(i)->getRequestedSize().y();
if(i!=0)
{
TotalHeight += 1.0f;
}
}
//Set My preferred Size
Pnt2f TopLeft, BottomRight;
Pnt2f InsetsTopLeft, InsetsBottomRight;
getBounds(TopLeft, BottomRight);
getInsideInsetsBounds(InsetsTopLeft, InsetsBottomRight);
Vec2f InsetSize( (BottomRight-TopLeft) - (InsetsBottomRight-InsetsTopLeft) );
setPreferredSize(Vec2f(MaxWidth+InsetSize.x(), TotalHeight+InsetSize.y()));
//Sneakily set my size
_sfSize.setValue(getPreferredSize());
getInsideInsetsBounds(InsetsTopLeft, InsetsBottomRight);
//Now position and size the Items
Real32 TopOffset(InsetsTopLeft.y());
for(UInt32 i(0) ; i<getMFChildren()->size() ; ++i)
{
getChildren(i)->setSize(Vec2f(MaxWidth, getChildren(i)->getRequestedSize().y()));
getChildren(i)->setPosition(Pnt2f(InsetsTopLeft.x(), TopOffset));
TopOffset += getChildren(i)->getRequestedSize().y() +1;
}
}
