src: refactored UI elements and graphics file structure

* split QtIconButton into multiple files
* moved graph elements from view to graphics
* structured elements into sub directories

src/lib_gui/qt/graphics/component/QtGraphNodeComponentClickable.cpp

@@ -0,0 +1,82 @@
+#include "QtGraphNodeComponentClickable.h"
+
+#include <QGraphicsSceneEvent>
+
+#include "QtGraphNode.h"
+
+QtGraphNodeComponentClickable::QtGraphNodeComponentClickable(QtGraphNode* graphNode)
+	: QtGraphNodeComponent(graphNode)
+	, m_mousePos(0.0f, 0.0f)
+	, m_mouseMoved(false)
+{
+}
+
+QtGraphNodeComponentClickable::~QtGraphNodeComponentClickable()
+{
+}
+
+void QtGraphNodeComponentClickable::nodeMousePressEvent(QGraphicsSceneMouseEvent* event)
+{
+	if (event->button() != Qt::LeftButton && event->button() != Qt::MiddleButton)
+	{
+		return;
+	}
+
+	m_mousePos = Vec2i(event->scenePos().x(), event->scenePos().y());
+	m_mouseMoved = false;
+
+	if (event->button() == Qt::MiddleButton)
+	{
+		event->accept();
+	}
+}
+
+void QtGraphNodeComponentClickable::nodeMouseMoveEvent(QGraphicsSceneMouseEvent* event)
+{
+	Vec2i mousePos = Vec2i(event->scenePos().x(), event->scenePos().y());
+
+	if ((mousePos - m_mousePos).getLength() > 1.0f)
+	{
+		m_mouseMoved = true;
+	}
+}
+
+void QtGraphNodeComponentClickable::nodeMouseReleaseEvent(QGraphicsSceneMouseEvent* event)
+{
+	if (event->button() != Qt::LeftButton && event->button() != Qt::MiddleButton)
+	{
+		return;
+	}
+
+	if (!m_mouseMoved)
+	{
+		if (event->modifiers() & Qt::ShiftModifier && event->button() == Qt::LeftButton)
+		{
+			m_graphNode->onCollapseExpand();
+		}
+		else if (event->modifiers() & Qt::ControlModifier && event->modifiers() & Qt::AltModifier && event->button() == Qt::LeftButton)
+		{
+			m_graphNode->onShowDefinition(false);
+		}
+		else if (event->modifiers() & Qt::ControlModifier && event->button() == Qt::LeftButton)
+		{
+			m_graphNode->onShowDefinition(true);
+		}
+		else if (event->modifiers() & Qt::AltModifier && event->button() == Qt::LeftButton)
+		{
+			m_graphNode->onHide();
+		}
+		else
+		{
+			if (event->button() == Qt::MiddleButton)
+			{
+				m_graphNode->onMiddleClick();
+			}
+			else
+			{
+				m_graphNode->onClick();
+			}
+		}
+		event->accept();
+	}
+}