Size StackLayout::layout(Component::Ptr component, const std::list<Component::Ptr>& children, const Size& innerSize)
{
Size preferred = Size::ZERO;
for (std::list<Component::Ptr>::const_iterator child = children.begin(); child != children.end(); ++child) {
Component::Ptr childComp = *child;
childComp->setSize(innerSize);
childComp->setPosition(Point(0, 0));
preferred = Size::max(preferred, childComp->getPreferredSize());
}
return preferred.grow(component->getInsets());
}
Size BorderLayout::layout(Component::Ptr component, const std::list<Component::Ptr>& children, const Size& innerSize)
{
Component::Ptr top;
Component::Ptr bottom;
Component::Ptr left;
Component::Ptr right;
Component::Ptr center;
for (std::list<Component::Ptr>::const_iterator child = children.begin(); child != children.end(); ++child) {
Component::Alignment alignment = (*child)->getAlignment();
switch (alignment) {
case Component::ALIGN_LEFT:
if (left) {
throw Exception("BorderLayout supports only one component with ALIGN_LEFT");
}
left = (*child);
break;
case Component::ALIGN_TOP:
if (top) {
throw Exception("BorderLayout supports only one component with ALIGN_TOP");
}
top = (*child);
break;
case Component::ALIGN_RIGHT:
if (right) {
throw Exception("BorderLayout supports only one component with ALIGN_RIGHT");
}
right = (*child);
break;
case Component::ALIGN_BOTTOM:
if (bottom) {
throw Exception("BorderLayout supports only one component with ALIGN_BOTTOM");
}
bottom = (*child);
break;
default:
case Component::ALIGN_DEFAULT:
case Component::ALIGN_CENTER:
if (center) {
throw Exception("BorderLayout supports only one component with ALIGN_CENTER/ALIGN_DEFAULT");
}
center = (*child);
break;
}
}
Insets centerInsets;
if (top) {
top->setWidth(innerSize.width);
top->setHeight(top->getPreferredSize().height);
top->setPosition(Point(0, 0));
centerInsets.top += top->getHeight();
}
if (bottom) {
bottom->setWidth(innerSize.width);
bottom->setHeight(bottom->getPreferredSize().height);
bottom->setPosition(Point(0, innerSize.height - bottom->getHeight()));
centerInsets.bottom += bottom->getHeight();
}
if (left) {
left->setHeight(innerSize.shrink(centerInsets).height);
left->setWidth(left->getPreferredSize().width);
left->setPosition(Point(0, centerInsets.top));
centerInsets.left += left->getWidth();
}
if (right) {
right->setHeight(innerSize.shrink(centerInsets).height);
right->setWidth(right->getPreferredSize().width);
right->setPosition(Point(innerSize.width - right->getWidth(), centerInsets.top));
centerInsets.right += right->getWidth();
}
if (center) {
center->setSize(innerSize.shrink(centerInsets));
center->setPosition(centerInsets.getTopLeft());
}
Size preferred;
if (left) {
const Size& size = left->getPreferredSize();
preferred.width += size.width;
preferred.height = std::max(preferred.height, size.height);
}
if (center) {
const Size& size = center->getPreferredSize();
preferred.width += size.width;
preferred.height = std::max(preferred.height, size.height);
}
if (right) {
const Size& size = right->getPreferredSize();
preferred.width += size.width;
preferred.height = std::max(preferred.height, size.height);
}
if (top) {
const Size& size = top->getPreferredSize();
preferred.width = std::max(preferred.width, size.width);
preferred.height += size.height;
}
if (bottom) {
const Size& size = bottom->getPreferredSize();
preferred.width = std::max(preferred.width, size.width);
preferred.height += size.height;
}
return preferred.grow(component->getInsets());
}