void HKWidgetLayoutFrame::ArrangeChildren()
{
bool bFitWidth = bAutoWidth && GetHAlign() != Align_Fill; // fitFlags & FitContentHorizontal
bool bFitHeight = bAutoHeight && GetVAlign() != VAlign_Fill; // fitFlags & FitContentVertical
// early out?
int numChildren = GetNumChildren();
if(numChildren == 0)
{
if(bFitWidth || bFitHeight)
{
// resize the layout
MFVector newSize = GetSize();
if(bFitWidth)
newSize.x = padding.x + padding.z;
if(bFitHeight)
newSize.y = padding.y + padding.w;
Resize(newSize);
}
return;
}
if(bFitWidth || bFitHeight)
{
// fit to largest child in each dimension
MFVector fit = MFVector::zero;
for(int a=0; a<numChildren; ++a)
{
HKWidget *pWidget = GetChild(a);
const MFVector &cSize = pWidget->GetSizeWithMargin();
fit.x = MFMax(fit.x, cSize.x + padding.x + padding.z);
fit.y = MFMax(fit.y, cSize.y + padding.y + padding.w);
}
// resize the layout
MFVector newSize = GetSize();
if(bFitWidth)
newSize.x = fit.x;
if(bFitHeight)
newSize.y = fit.y;
Resize(newSize);
}
MFVector cPos = MakeVector(padding.x, padding.y);
MFVector cSize = MakeVector(size.x - (padding.x + padding.z), size.y - (padding.y + padding.w));
for(int a=0; a<numChildren; ++a)
{
HKWidget *pWidget = GetChild(a);
const MFVector &cMargin = pWidget->GetLayoutMargin();
const MFVector &size = pWidget->GetSize();
MFVector tPos = cPos + MakeVector(cMargin.x, cMargin.y);
MFVector tSize = cSize - MakeVector(cMargin.x + cMargin.z, cMargin.y + cMargin.w);
switch(pWidget->GetLayoutJustification())
{
case TopLeft:
pWidget->SetPosition(tPos);
break;
case TopCenter:
pWidget->SetPosition(tPos + MakeVector((tSize.x - size.x) * 0.5f, 0));
break;
case TopRight:
pWidget->SetPosition(tPos + MakeVector(tSize.x - size.x, 0));
break;
case TopFill:
pWidget->SetPosition(tPos);
ResizeChild(pWidget, MakeVector(tSize.x, size.y));
break;
case CenterLeft:
pWidget->SetPosition(tPos + MakeVector(0, (tSize.y - size.y) * 0.5f));
break;
case Center:
pWidget->SetPosition(tPos + MakeVector((tSize.x - size.x) * 0.5f, (tSize.y - size.y) * 0.5f));
break;
case CenterRight:
pWidget->SetPosition(tPos + MakeVector(tSize.x - size.x, (tSize.y - size.y) * 0.5f));
break;
case CenterFill:
pWidget->SetPosition(tPos + MakeVector(0, (tSize.y - size.y) * 0.5f));
ResizeChild(pWidget, MakeVector(tSize.x, size.y));
break;
case BottomLeft:
pWidget->SetPosition(tPos + MakeVector(0, tSize.y - size.y));
break;
case BottomCenter:
pWidget->SetPosition(tPos + MakeVector((tSize.x - size.x) * 0.5f, tSize.y - size.y));
break;
case BottomRight:
pWidget->SetPosition(tPos + MakeVector(tSize.x - size.x, tSize.y - size.y));
break;
case BottomFill:
pWidget->SetPosition(tPos + MakeVector(0, tSize.y - size.y));
ResizeChild(pWidget, MakeVector(tSize.x, size.y));
break;
case FillLeft:
pWidget->SetPosition(tPos);
ResizeChild(pWidget, MakeVector(size.x, tSize.y));
break;
case FillCenter:
pWidget->SetPosition(tPos + MakeVector((tSize.x - size.x) * 0.5f, 0));
ResizeChild(pWidget, MakeVector(size.x, tSize.y));
break;
case FillRight:
pWidget->SetPosition(tPos + MakeVector(tSize.x - size.x, 0));
ResizeChild(pWidget, MakeVector(size.x, tSize.y));
break;
case Fill:
pWidget->SetPosition(tPos);
ResizeChild(pWidget, tSize);
break;
case None:
// this widget has absolute coordinates..
default:
break;
}
}
}
