void Widget::SetParent( Widget::Ptr parent ) {
auto cont = std::dynamic_pointer_cast<Container>( parent );
auto oldparent = m_parent.lock();
if( cont == oldparent ) {
return;
}
if( oldparent ) {
oldparent->Remove( shared_from_this() );
}
m_parent = cont;
auto iter = std::find( root_widgets.begin(), root_widgets.end(), this );
if( parent ) {
// If this widget has a parent, it is no longer a root widget.
if( iter != root_widgets.end() ) {
root_widgets.erase( iter );
}
SetHierarchyLevel( parent->GetHierarchyLevel() + 1 );
}
else {
// If this widget does not have a parent, it becomes a root widget.
if( iter == root_widgets.end() ) {
root_widgets.push_back( this );
}
SetHierarchyLevel( 0 );
}
HandleAbsolutePositionChange();
}
void Widget::AllocateSize( const sf::FloatRect& rect ) const {
sf::FloatRect oldallocation( m_allocation );
// Make sure allocation is pixel-aligned.
m_allocation.Left = std::floor( rect.Left + .5f );
m_allocation.Top = std::floor( rect.Top + .5f );
m_allocation.Width = std::floor( rect.Width + .5f );
m_allocation.Height = std::floor( rect.Height + .5f );
if(
oldallocation.Top == m_allocation.Top &&
oldallocation.Left == m_allocation.Left &&
oldallocation.Width == m_allocation.Width &&
oldallocation.Height == m_allocation.Height
) {
// Nothing even changed. Save the hierarchy the trouble.
return;
}
HandleAbsolutePositionChange();
HandleSizeAllocate( oldallocation );
OnSizeAllocate();
Invalidate();
}
void Widget::SetAllocation( const sf::FloatRect& rect ) {
sf::FloatRect oldallocation( m_allocation );
// Make sure allocation is pixel-aligned.
m_allocation.left = std::floor( rect.left + .5f );
m_allocation.top = std::floor( rect.top + .5f );
m_allocation.width = std::floor( rect.width + .5f );
m_allocation.height = std::floor( rect.height + .5f );
if(
oldallocation.top == m_allocation.top &&
oldallocation.left == m_allocation.left &&
oldallocation.width == m_allocation.width &&
oldallocation.height == m_allocation.height
) {
// Nothing even changed. Save the hierarchy the trouble.
return;
}
if( ( oldallocation.top != m_allocation.top ) || ( oldallocation.left != m_allocation.left ) ) {
HandlePositionChange();
HandleAbsolutePositionChange();
}
if( ( oldallocation.width != m_allocation.width ) || ( oldallocation.height != m_allocation.height ) ) {
HandleSizeChange();
Invalidate();
GetSignals().Emit( OnSizeAllocate );
}
}
void Widget::SetPosition( const sf::Vector2f& position ) {
sf::FloatRect allocation( GetAllocation() );
// Make sure allocation is pixel-aligned.
m_allocation.left = std::floor( position.x + .5f );
m_allocation.top = std::floor( position.y + .5f );
if( ( allocation.top != m_allocation.top ) || ( allocation.left != m_allocation.left ) ) {
HandlePositionChange();
HandleAbsolutePositionChange();
}
}
void Widget::Refresh() const {
sf::FloatRect old_allocation( GetAllocation() );
RequestSize();
if(
old_allocation.Left == GetAllocation().Left &&
old_allocation.Top == GetAllocation().Top &&
old_allocation.Width == GetAllocation().Width &&
old_allocation.Height == GetAllocation().Height
) {
HandleAbsolutePositionChange();
HandleSizeAllocate( old_allocation );
}
Invalidate();
}
void Widget::SetParent( const Widget::Ptr& parent ) {
Container::Ptr cont( DynamicPointerCast<Container>( parent ) );
if( !cont ) {
return;
}
Container::Ptr oldparent = m_parent.lock();
if( oldparent ) {
oldparent->Remove( shared_from_this() );
}
m_parent = cont;
SetHierarchyLevel( parent->GetHierarchyLevel() + 1 );
HandleAbsolutePositionChange();
}
void Widget::SetPosition( const sf::Vector2f& position ) const {
sf::FloatRect oldallocation( GetAllocation() );
// Make sure allocation is pixel-aligned.
m_allocation.Left = std::floor( position.x + .5f );
m_allocation.Top = std::floor( position.y + .5f );
if( oldallocation.Top == m_allocation.Top &&
oldallocation.Left == m_allocation.Left ) {
// Nothing even changed. Save the hierarchy the trouble.
return;
}
HandleAbsolutePositionChange();
HandleSizeAllocate( oldallocation );
if( m_drawable ) {
m_drawable->SetPosition( GetAbsolutePosition() );
}
OnSizeAllocate();
}