void Container::HandleChildInvalidate( const Widget::PtrConst& child ) const {
Container::PtrConst parent = GetParent();
if( parent ) {
parent->HandleChildInvalidate( child );
}
}
void Widget::Invalidate() const {
if( m_invalidated ) {
return;
}
m_invalidated = true;
Container::PtrConst parent = m_parent.lock();
if( parent ) {
parent->HandleChildInvalidate( static_cast<Widget::PtrConst>( shared_from_this() ) );
}
}
Widget::WidgetsList SearchContainerForClass( Container::PtrConst container, const std::string& class_name ) {
Widget::WidgetsList result;
if( !container ) {
return result;
}
for( const auto& child : container->GetChildren() ) {
if( child->GetClass() == class_name ) {
result.push_back( child );
}
auto child_container = std::dynamic_pointer_cast<Container>( child );
if( child_container ) {
auto child_result = SearchContainerForClass( child_container, class_name );
// Splice the 2 vectors.
if( !child_result.empty() ) {
result.reserve( child_result.size() );
result.insert( result.end(), child_result.begin(), child_result.end() );
}
}
}
return result;
}
Widget::Ptr SearchContainerForId( Container::PtrConst container, const std::string& id ) {
if( !container ) {
return Widget::Ptr();
}
for( const auto& child : container->GetChildren() ) {
if( child->GetId() == id ) {
return child;
}
auto child_container = std::dynamic_pointer_cast<Container>( child );
if( child_container ) {
auto widget = SearchContainerForId( child_container, id );
if( widget ) {
return widget;
}
}
}
return Widget::Ptr();
}
void GLCanvas::HandleAbsolutePositionChange() {
sf::Vector2f position = Widget::GetAbsolutePosition();
Container::PtrConst parent = GetParent();
sf::Vector2f parent_position( 0.f, 0.f );
while( parent ) {
if( parent->GetName() == "Viewport" ) {
// Try to get the first ancestor of the viewport that is not a viewport itself.
// Add up all allocations while searching.
Container::PtrConst viewport_parent = parent->GetParent();
while( viewport_parent && viewport_parent->GetName() == "Viewport" ) {
parent_position += sf::Vector2f( viewport_parent->GetAllocation().left, viewport_parent->GetAllocation().top );
viewport_parent = viewport_parent->GetParent();
}
if( !viewport_parent || ( viewport_parent->GetName() == "Viewport" ) ) {
parent_position = sf::Vector2f( 0.f, 0.f );
break;
}
parent_position += viewport_parent->GetAbsolutePosition();
parent_position += sf::Vector2f( parent->GetAllocation().left, parent->GetAllocation().top );
break;
}
parent = parent->GetParent();
}
m_custom_viewport->SetDestinationOrigin(
sf::Vector2f(
std::floor( parent_position.x + position.x + .5f ),
std::floor( parent_position.y + position.y + .5f )
)
);
Invalidate();
}