Terminal strip Xref is clickable

When user hover the Xref string of a terminal, the string color change
to blue to advise user the xref is clickable. Double click on the blue
Xref go the folio of the terminal and zoom the view to the terminal.

sources/TerminalStrip/GraphicsItem/terminalstripdrawer.cpp

@@ -45,6 +45,7 @@ void TerminalStripDrawer::paint(QPainter *painter)
 {
     if (m_strip && m_pattern)
     {
+		m_united_xref_text_rect = QRectF();
             //To draw text, QPainter need a Qrect. Instead of create an instance
             //for each text, we re-use the same instance of QRect.
         QRect text_rect;
@@ -95,7 +96,6 @@ void TerminalStripDrawer::paint(QPainter *painter)
 
             //Move painter pos to next drawing
         painter->translate(m_pattern->m_header_rect.width(),0);
-
         qreal x_offset{m_pattern->m_header_rect.width()};
 
             //Draw spacer
@@ -120,6 +120,8 @@ void TerminalStripDrawer::paint(QPainter *painter)
 
         QHash<QUuid, QVector<QPointF>> bridges_anchor_points;
 
+		m_hovered_xref = hoverTerminal{};
+		int physical_index = 0;
             //Loop over physical terminals
         for (const auto &physical_t : m_strip->physicalTerminal())
         {
@@ -190,15 +192,40 @@ void TerminalStripDrawer::paint(QPainter *painter)
                 painter->restore();
 
 					//Draw xref
-				auto xref_string = shared_real_terminal->xref();
-				painter->save();
 				xref_rect.setRect(0, xref_text_y, terminal_rect.width(), xref_text_height);
+				painter->save();
 				if (xref_text_orientation == Qt::Vertical)
 				{
 					painter->translate(xref_rect.bottomLeft());
 					painter->rotate(270);
 					xref_rect.setRect(0, 0, xref_rect.height(), xref_rect.width());
 				}
+
+				QTransform transform;
+				transform.translate(x_offset, 0);
+
+				if (xref_text_orientation == Qt::Vertical)
+				{
+					transform.translate(0, xref_text_y + xref_text_height);
+					transform.rotate(270);
+				}
+
+				auto xref_string = shared_real_terminal->xref();
+
+				const auto mapped_xref_text_rect = transform.mapRect(painter->boundingRect(xref_rect, xref_string, xref_text_option));
+				if (m_united_xref_text_rect.isNull()) {
+					m_united_xref_text_rect = mapped_xref_text_rect;
+				} else {
+					m_united_xref_text_rect = m_united_xref_text_rect.united(mapped_xref_text_rect);
+				}
+
+					//if mouse hover the xref text, draw it in blue to advise user the xref is clickable.
+				if (!m_mouse_hover_pos.isNull() && mapped_xref_text_rect.contains(m_mouse_hover_pos)) {
+					painter->setPen(Qt::blue);
+					m_hovered_xref.physical = physical_index;
+					m_hovered_xref.real = i;
+				}
+
 				painter->drawText(xref_rect, xref_string, xref_text_option);
 
 				if (m_preview_draw)
@@ -234,6 +261,7 @@ void TerminalStripDrawer::paint(QPainter *painter)
                 painter->translate(terminal_rect.width(),0);
                 x_offset += terminal_rect.width();
             }
+			physical_index++;
         }
         painter->restore();
 
@@ -269,6 +297,41 @@ void TerminalStripDrawer::setPreviewDraw(bool draw) {
     m_preview_draw = draw;
 }
 
+void TerminalStripDrawer::setMouseHoverPos(const QPointF &pos)
+{
+	m_last_mouse_pos_in_xrefs_rect = m_united_xref_text_rect.contains(m_mouse_hover_pos);
+	m_mouse_hover_pos = pos;
+}
+
+/**
+ * @brief TerminalStripDrawer::mouseHoverXref
+ * @return True if the mouse position (given through the function setMouseHoverPos)
+ * hover the rect of a xref.
+ */
+bool TerminalStripDrawer::mouseHoverXref() const {
+	return m_united_xref_text_rect.contains(m_mouse_hover_pos);
+}
+
+bool TerminalStripDrawer::needUpdate()
+{
+	if (mouseHoverXref()) {
+		return true;
+	} else if (m_last_mouse_pos_in_xrefs_rect) {
+		return true;
+	}
+	return false;
+}
+
+/**
+ * @brief TerminalStripDrawer::hoveredXref
+ * @return the current terminal hovered by the mouse
+ * in the xref bounding rectangle
+ */
+hoverTerminal TerminalStripDrawer::hoveredXref() const
+{
+	return m_hovered_xref;
+}
+
 qreal TerminalStripDrawer::height() const
 {
     if (m_pattern)

sources/TerminalStrip/GraphicsItem/terminalstripdrawer.h

@@ -27,6 +27,17 @@ class TerminalStrip;
 
 namespace TerminalStripDrawer
 {
+	/**
+	 * @brief The hoverTerminal struct
+	 * Just a little struct use to know what is the physical and real terminal
+	 * when the mouse hover the Xref string of a terminal.
+	 * If mouse don't hover a Xref the value is set to -1;
+	 */
+	struct hoverTerminal{
+		int physical{-1};
+		int real{-1};
+	};
+
     class AbstractBridgeInterface
     {
         public:
@@ -80,6 +91,11 @@ namespace TerminalStripDrawer
 
             void setPreviewDraw(bool draw = true);
 
+			void setMouseHoverPos(const QPointF &pos);
+			bool mouseHoverXref() const;
+			bool needUpdate();
+			hoverTerminal hoveredXref() const;
+
         private:
             qreal height() const;
             qreal width() const;
@@ -88,6 +104,10 @@ namespace TerminalStripDrawer
             QSharedPointer <AbstractTerminalStripInterface> m_strip;
             QSharedPointer<TerminalStripLayoutPattern> m_pattern;
             bool m_preview_draw { false };
+			QPointF m_mouse_hover_pos;
+			QRectF m_united_xref_text_rect;
+			bool m_last_mouse_pos_in_xrefs_rect{false};
+			hoverTerminal m_hovered_xref;
     };
 }
 

sources/TerminalStrip/GraphicsItem/terminalstripitem.cpp

@@ -22,6 +22,8 @@
 #include "../../project/projectpropertieshandler.h"
 #include "../../qetgraphicsitem/qgraphicsitemutility.h"
 #include "../terminalstrip.h"
+#include "../physicalterminal.h"
+#include "../realterminal.h"
 #include "../ui/terminalstripeditorwindow.h"
 #include "trueterminalstrip.h"
 
@@ -94,13 +96,53 @@ QString TerminalStripItem::name() const {
     return tr("plan de bornes");
 }
 
+void TerminalStripItem::hoverMoveEvent(QGraphicsSceneHoverEvent *event)
+{
+	QetGraphicsItem::hoverMoveEvent(event);
+	m_drawer.setMouseHoverPos(hoverMousePos());
+	if (m_drawer.needUpdate()) {
+		update();
+	}
+}
+
+void TerminalStripItem::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
+{
+	QetGraphicsItem::hoverLeaveEvent(event);
+	m_drawer.setMouseHoverPos(QPointF{});
+}
+
 void TerminalStripItem::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event)
 {
     Q_UNUSED (event);
 
+	const auto hovered = m_drawer.hoveredXref();
+
 	if (m_strip) {
+		if (hovered.physical >= 0 &&
+			hovered.real >= 0)
+		{
+			if (const auto physical_terminal = m_strip->physicalTerminal(hovered.physical);
+				!physical_terminal.isNull())
+			{
+				if (const auto real_terminal = physical_terminal->realTerminal(hovered.real);
+					!real_terminal.isNull() &&
+					real_terminal->isElement())
+				{
+					if (QPointer<Element> element = real_terminal->element();
+						!element.isNull())
+					{
+						//Unselect and ungrab mouse to prevent unwanted
+						//move when element is in the same scene of this.
+						setSelected(false);
+						ungrabMouse();
+						QetGraphicsItem::showItem(element);
+					}
+				}
+			}
+		} else {
 			TerminalStripEditorWindow::edit(m_strip);
 		}
+	}
 }
 
 void TerminalStripItem::refreshPending()

sources/TerminalStrip/GraphicsItem/terminalstripitem.h

@@ -46,6 +46,8 @@ class TerminalStripItem : public QetGraphicsItem
 		QRectF boundingRect() const override;
 		QString name() const override;
 
+		void hoverMoveEvent(QGraphicsSceneHoverEvent *event) override;
+		void hoverLeaveEvent(QGraphicsSceneHoverEvent *event) override;
         void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event) override;
         void refreshPending();
         void setLayout(QSharedPointer<TerminalStripLayoutPattern> layout);
@@ -57,7 +59,6 @@ class TerminalStripItem : public QetGraphicsItem
 		QPointer<TerminalStrip> m_strip;
         TerminalStripDrawer::TerminalStripDrawer m_drawer;
         QUuid m_pending_strip_uuid;
-
 };
 
 #endif // TERMINALSTRIPITEM_H

sources/TerminalStrip/physicalterminal.cpp

@@ -189,6 +189,20 @@ QVector<QSharedPointer<RealTerminal>> PhysicalTerminal::realTerminals() const {
 	return m_real_terminal;
 }
 
+/**
+ * @brief PhysicalTerminal::realTerminal
+ * @param pos
+ * @return the real terminal at position pos.
+ * Note that the returned QSharedPointer can be null
+ */
+QSharedPointer<RealTerminal> PhysicalTerminal::realTerminal(int pos) const
+{
+	if (pos < m_real_terminal.size()) {
+		return m_real_terminal.at(pos);
+	}
+	else return QSharedPointer<RealTerminal>{};
+}
+
 /**
  * @brief uuid
  * @return the uuid of this physical terminal

sources/TerminalStrip/physicalterminal.h

@@ -86,6 +86,7 @@ class PhysicalTerminal
 		int levelCount() const;
 		int levelOf(const QSharedPointer<RealTerminal> &terminal) const;
 		QVector<QSharedPointer<RealTerminal>> realTerminals() const;
+		QSharedPointer<RealTerminal> realTerminal(int pos) const;
 		QUuid uuid() const;
 		int pos() const;
 		int realTerminalCount() const;

sources/qetgraphicsitem/qetgraphicsitem.cpp

@@ -24,12 +24,31 @@
 	Default constructor
 	@param parent : Parent Item
 */
+void QetGraphicsItem::showItem(QetGraphicsItem *item)
+{
+	if (item && item->diagram())
+	{
+		item->diagram()->showMe();
+		item->setSelected(true);
+
+			//Zoom to the item
+		for(QGraphicsView *view : item->scene()->views())
+		{
+			QRectF fit = item->sceneBoundingRect();
+			fit.adjust(-200, -200, 200, 200);
+			view->fitInView(fit, Qt::KeepAspectRatioByExpanding);
+		}
+	}
+}
+
 QetGraphicsItem::QetGraphicsItem(QGraphicsItem *parent):
 	QGraphicsObject(parent),
 	is_movable_(true),
 	m_first_move(true),
 	snap_to_grid_(true)
-{}
+{
+	setAcceptHoverEvents(true);
+}
 
 QetGraphicsItem::~QetGraphicsItem()
 {}
@@ -68,6 +87,11 @@ bool QetGraphicsItem::isHovered() const {
 	return m_hovered;
 }
 
+QPointF QetGraphicsItem::hoverMousePos() const
+{
+	return m_mouse_hover_pos;
+}
+
 /**
 	@brief QetGraphicsItem::state
 	@return the current state of this item 
@@ -166,6 +190,12 @@ void QetGraphicsItem::hoverEnterEvent(QGraphicsSceneHoverEvent *event)
 	QGraphicsObject::hoverEnterEvent(event);
 }
 
+void QetGraphicsItem::hoverMoveEvent(QGraphicsSceneHoverEvent *event)
+{
+	QGraphicsObject::hoverMoveEvent(event);
+	m_mouse_hover_pos = event->pos();
+}
+
 void QetGraphicsItem::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
 {
 	m_hovered = false;

sources/qetgraphicsitem/qetgraphicsitem.h

@@ -28,6 +28,9 @@ class QetGraphicsItem : public QGraphicsObject
 {
 	Q_OBJECT
 
+	public :
+		static void showItem (QetGraphicsItem *item);
+
 	public:
 		//constructor destructor
 		QetGraphicsItem(QGraphicsItem *parent = nullptr);
@@ -43,6 +46,7 @@ class QetGraphicsItem : public QGraphicsObject
 		virtual void setMovable (bool movable) { is_movable_ = movable;}
 
 		bool isHovered() const;
+		QPointF hoverMousePos() const;
 
 		virtual void editProperty () {}
 		virtual QString name ()const
@@ -57,6 +61,7 @@ class QetGraphicsItem : public QGraphicsObject
 		void mouseMoveEvent(QGraphicsSceneMouseEvent *event) override;
 		void mouseReleaseEvent(QGraphicsSceneMouseEvent *event) override;
 		void hoverEnterEvent(QGraphicsSceneHoverEvent *event) override;
+		void hoverMoveEvent(QGraphicsSceneHoverEvent *event) override;
 		void hoverLeaveEvent(QGraphicsSceneHoverEvent *event) override;
 
 	protected:
@@ -68,6 +73,7 @@ class QetGraphicsItem : public QGraphicsObject
 
 	private:
 		bool m_hovered{false};
+		QPointF m_mouse_hover_pos;
 
 };