logic: Group nodes in inheritance graph who have the same base and derived nodes (issue #459)

* added graph node for grouping nodes with separate sub-layout
* group nodes show name in top left corner
* clicking on single edge activates source locations of all edges
* removed separate setters for token components
* fixed text nodes missing or too many in list layout
* moved simple row and column layouts to ListLayouter
* added skewed layout type to ListLayouter

fortune cookie message = Sometimes you should have the courage and risk something.

src/lib_gui/qt/view/graphElements/QtGraphEdge.cpp

@@ -6,6 +6,7 @@
 #include "component/view/GraphViewStyle.h"
 #include "data/graph/Edge.h"
 #include "data/graph/token_component/TokenComponentAggregation.h"
+#include "data/graph/token_component/TokenComponentEdgeIds.h"
 #include "data/graph/token_component/TokenComponentInheritanceChain.h"
 #include "qt/graphics/QtLineItemAngled.h"
 #include "qt/graphics/QtLineItemBezier.h"
@@ -251,8 +252,11 @@ void QtGraphEdge::onClick()
 {
 	if (isTrailEdge())
 	{
+		TokenComponentEdgeIds* componentEdgeIds = getData()->getComponent<TokenComponentEdgeIds>();
+		std::vector<Id> ids = { getData()->getId() };
+
 		MessageActivateTrailEdge(
-			getData()->getId(),
+			componentEdgeIds ? componentEdgeIds->edgeIds : ids,
 			getData()->getType(),
 			getData()->getFrom()->getNameHierarchy(),
 			getData()->getTo()->getNameHierarchy()

src/lib_gui/qt/view/graphElements/QtGraphNode.cpp

@@ -330,6 +330,11 @@ bool QtGraphNode::isTextNode() const
 	return false;
 }
 
+bool QtGraphNode::isGroupNode() const
+{
+	return false;
+}
+
 Id QtGraphNode::getTokenId() const
 {
 	return 0;

src/lib_gui/qt/view/graphElements/QtGraphNode.h

@@ -87,6 +87,7 @@ public:
 	virtual bool isBundleNode() const;
 	virtual bool isQualifierNode() const;
 	virtual bool isTextNode() const;
+	virtual bool isGroupNode() const;
 
 	virtual Id getTokenId() const;
 

src/lib_gui/qt/view/graphElements/QtGraphNodeGroup.cpp

@@ -0,0 +1,80 @@
+#include "qt/view/graphElements/QtGraphNodeGroup.h"
+
+#include <QBrush>
+#include <QGraphicsRectItem>
+#include <QPen>
+
+#include "qt/graphics/QtRoundedRectItem.h"
+
+QtGraphNodeGroup::QtGraphNodeGroup(Id tokenId, const std::wstring& name, NodeType::GroupType type)
+	: m_tokenId(tokenId)
+	, m_type(type)
+{
+	setName(name);
+	setZValue(-10.0f);
+	m_rect->setZValue(-10.0f);
+
+	if (type == NodeType::GROUP_FRAMELESS)
+	{
+		m_rect->hide();
+		return;
+	}
+
+	if (!name.size())
+	{
+		return;
+	}
+
+	m_background = new QtRoundedRectItem(this);
+	m_backgroundTopRight = new QGraphicsRectItem(this);
+	m_backgroundBottomLeft = new QGraphicsRectItem(this);
+
+	m_background->setZValue(-10.0f);
+	m_backgroundTopRight->setZValue(-10.0f);
+	m_backgroundBottomLeft->setZValue(-10.0f);
+
+	GraphViewStyle::NodeStyle style = GraphViewStyle::getStyleOfGroupNode(type, false);
+	GraphViewStyle::NodeMargins margins = GraphViewStyle::getMarginsOfGroupNode(type, true);
+
+	int width = style.textOffset.x * 2 + style.borderWidth + margins.charWidth * name.size();
+	int height = margins.top * 2 + margins.charHeight;
+
+	m_background->setRadius(style.cornerRadius);
+	m_background->setRect(0, 0, width, height);
+
+	m_backgroundTopRight->setRect(width - style.cornerRadius, 0, style.cornerRadius, style.cornerRadius);
+	m_backgroundBottomLeft->setRect(0, height - style.cornerRadius, style.cornerRadius, style.cornerRadius);
+}
+
+QtGraphNodeGroup::~QtGraphNodeGroup()
+{
+}
+
+bool QtGraphNodeGroup::isGroupNode() const
+{
+	return true;
+}
+
+Id QtGraphNodeGroup::getTokenId() const
+{
+	return m_tokenId;
+}
+
+void QtGraphNodeGroup::updateStyle()
+{
+	GraphViewStyle::NodeStyle style = GraphViewStyle::getStyleOfGroupNode(m_type, false);
+
+	if (m_background)
+	{
+		m_background->setBrush(QColor(style.color.border.c_str()));
+		m_background->setPen(QPen(Qt::transparent));
+
+		m_backgroundTopRight->setBrush(QColor(style.color.border.c_str()));
+		m_backgroundTopRight->setPen(QPen(Qt::transparent));
+
+		m_backgroundBottomLeft->setBrush(QColor(style.color.border.c_str()));
+		m_backgroundBottomLeft->setPen(QPen(Qt::transparent));
+	}
+
+	setStyle(style);
+}

src/lib_gui/qt/view/graphElements/QtGraphNodeGroup.h

@@ -0,0 +1,33 @@
+#ifndef QT_GRAPH_NODE_GROUP_H
+#define QT_GRAPH_NODE_GROUP_H
+
+#include "data/NodeType.h"
+#include "qt/view/graphElements/QtGraphNode.h"
+
+class QGraphicsRectItem;
+class QtRoundedRectItem;
+
+class QtGraphNodeGroup
+	: public QtGraphNode
+{
+	Q_OBJECT
+public:
+	QtGraphNodeGroup(Id tokenId, const std::wstring& name, NodeType::GroupType type);
+	virtual ~QtGraphNodeGroup();
+
+	// QtGraphNode implementation
+	virtual bool isGroupNode() const;
+	virtual Id getTokenId() const;
+
+	virtual void updateStyle();
+
+private:
+	Id m_tokenId;
+	NodeType::GroupType m_type;
+
+	QtRoundedRectItem* m_background = nullptr;
+	QGraphicsRectItem* m_backgroundTopRight = nullptr;
+	QGraphicsRectItem* m_backgroundBottomLeft = nullptr;
+};
+
+#endif // QT_GRAPH_NODE_GROUP_H