Method AdjustLayout

Engine/source/EtEditor/Layout/EditorSplitNode.cpp:87–147

--------------------------------- EditorSplitNode::AdjustLayout Set the pane position once the widget is realized

// Set the pane position once the widget is realized
//
void EditorSplitNode::AdjustLayout()
{
	if (m_LayoutAdjusted)
	{
		return;
	}

	// set the position of the handle
	int32 size = 0;

	if (m_IsHorizontal)
	{
		size = m_Attachment->get_allocated_width();
	}
	else
	{
		size = m_Attachment->get_allocated_height();
	}

	m_Paned->set_position(static_cast<int32>(m_SplitRatio * static_cast<float>(size)));

	// propagate this to children
	if (!(m_Child1->IsLeaf()))
	{
		static_cast<EditorSplitNode*>(m_Child1)->AdjustLayout();
	}

	if (!(m_Child2->IsLeaf()))
	{
		static_cast<EditorSplitNode*>(m_Child2)->AdjustLayout();
	}

	m_LayoutAdjusted = true;

	// ensure the split ratio is updated if the user drags the handle
	auto positionChangedCallback = [this]()
	{
		if (!m_LayoutAdjusted)
		{
			return;
		}

		float size = 0.f;
		if (m_IsHorizontal)
		{
			size = static_cast<float>(m_Attachment->get_allocated_width());
		}
		else
		{
			size = static_cast<float>(m_Attachment->get_allocated_height());
		}

		if (size == 0.f)
		{
			return;
		}

		m_SplitRatio = static_cast<float>(m_Paned->get_position()) / size;