加入实时鼠标位置和连线功能，更加便利了。

taskbusplatform/CMakeLists.txt

@@ -56,6 +56,7 @@ set(PRJ_HEADERS_GUI
     gui/taskmodule.h
     gui/tgraphicstaskitem.h
     gui/dlgabout.h
+    gui/tbscene.h
 )
 set(PRJ_SOURCES_CORE
     core/tasknode.cpp
@@ -74,6 +75,7 @@ set(PRJ_SOURCES_GUI
     gui/taskmodule.cpp
     gui/tgraphicstaskitem.cpp
     gui/custom_item_editor.cpp
+    gui/tbscene.cpp
 )
 set(PRJ_FORMS
     gui/taskbusplatformfrm.ui

taskbusplatform/gui/pdesignerview.cpp

-#include "pdesignerview.h"
+#include "pdesignerview.h"
 #include "ui_pdesignerview.h"
 #include <QDragEnterEvent>
 #include <QMimeData>
@@ -8,7 +8,6 @@
 #include <QMdiSubWindow>
 #include <QDataStream>
 #include <QClipboard>
-#include <QGraphicsScene>
 #include <QGraphicsLineItem>
 #include <QMessageBox>
 #include <QJsonObject>
@@ -21,13 +20,13 @@
 #include "tb_interface.h"
 #include "core/process_prctl.h"
 #include "watchdog/profile_log.h"
-
+#include "tbscene.h"
 int PDesignerView::m_nextCV = 1;
 
 PDesignerView::PDesignerView(taskBusPlatformFrm * pMainfrm,QWidget *parent) :
 	QWidget(parent),
 	ui(new Ui::PDesignerView),
-	m_scene(new QGraphicsScene(0,0,4096,3072,this)),
+	m_scene(new TBScene(0,0,4096,3072,this)),
 	m_project(new taskProject(0)),
 	m_pRunThread(new QThread(this)),
 	m_pMainFrm(pMainfrm)
@@ -75,7 +74,6 @@ PDesignerView::PDesignerView(taskBusPlatformFrm * pMainfrm,QWidget *parent) :
 	}
 	{
 		QToolBar * bar = new QToolBar(tr("Designer"),this) ;
-		bar->addAction(ui->actionConnectLine);	addAction(ui->actionConnectLine);
 		bar->addAction(ui->actionDeleteLine);	addAction(ui->actionDeleteLine);
 		bar->addAction(ui->actionPinUp);		addAction(ui->actionPinUp);
 		bar->addAction(ui->actionPinDown);		addAction(ui->actionPinDown);
@@ -576,7 +574,8 @@ void PDesignerView::on_actionCut_triggered()
 	}
 }
 
-void PDesignerView::on_actionConnectLine_triggered()
+
+void PDesignerView::connectPins()
 {
 	int gIns = 0;
 	foreach (TGraphicsTaskItem::pin_info p, TGraphicsTaskItem::m_pinList)
@@ -614,8 +613,6 @@ void PDesignerView::on_actionConnectLine_triggered()
 
 	TGraphicsTaskItem::m_pinList.clear();
 	m_project->refresh_idxes();
-	ui->graphicsView_main->scale(0.5,1);
-	ui->graphicsView_main->scale(2,1);
 	appendUndoList();
 }
 

taskbusplatform/gui/pdesignerview.h

-/*!
+/*!
  * PDesignerView provides  a modular drag-and-drop interface like Simulink or
  * gnu-radio that can be used to implement (quasi-)real-time processing logic
  * on a general-purpose computer.
@@ -18,7 +18,7 @@
 #include "core/taskproject.h"
 class TGraphicsTaskItem;
 class taskNode;
-class QGraphicsScene;
+class TBScene;
 class QGraphicsLineItem;
 class taskBusPlatformFrm;
 namespace Ui {
@@ -68,7 +68,7 @@ private:
 	//进程对应的图形
 	//Graphics for process corresponding
 	QVector< TGraphicsTaskItem *> m_vec_gitems;
-	QGraphicsScene * m_scene;
+	TBScene * m_scene;
 	//连线，在update_paths更新
 	//lines, uodated in void update_paths();
 	QVector<QGraphicsLineItem *> m_lines;
@@ -104,7 +104,7 @@ public:
 	void savedUndoState();
 public slots:
 	void appendUndoList();
-
+	void connectPins();
 protected:
 	void set_modified(bool bmod = true);
 protected:
@@ -124,7 +124,6 @@ private slots:
 	void on_actionCopy_triggered();
 	void on_actionPaste_triggered();
 	void on_actionCut_triggered();
-	void on_actionConnectLine_triggered();
 	void on_actionDeleteLine_triggered();
 	void on_actionPinUp_triggered();
 	void on_actionPinDown_triggered();

taskbusplatform/gui/pdesignerview.ui

@@ -52,9 +52,6 @@
      <property name="alignment">
       <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignTop</set>
      </property>
-     <property name="renderHints">
-      <set>QPainter::HighQualityAntialiasing|QPainter::SmoothPixmapTransform|QPainter::TextAntialiasing</set>
-     </property>
      <property name="dragMode">
       <enum>QGraphicsView::ScrollHandDrag</enum>
      </property>
@@ -184,21 +181,6 @@
     <string>Ctrl+X</string>
    </property>
   </action>
-  <action name="actionConnectLine">
-   <property name="icon">
-    <iconset resource="../taskbusplatform.qrc">
-     <normaloff>:/taskBus/images/H. line.png</normaloff>:/taskBus/images/H. line.png</iconset>
-   </property>
-   <property name="text">
-    <string>ConnectLine</string>
-   </property>
-   <property name="toolTip">
-    <string>ConnectLine, Ctrl+L</string>
-   </property>
-   <property name="shortcut">
-    <string>Ctrl+L</string>
-   </property>
-  </action>
   <action name="actionDeleteLine">
    <property name="icon">
     <iconset resource="../taskbusplatform.qrc">

taskbusplatform/gui/tbscene.cpp

+#include "tbscene.h"
+#include "tgraphicstaskitem.h"
+#include <QGraphicsSceneMouseEvent>
+TBScene::TBScene(QObject *parent)
+	: QGraphicsScene{parent}
+	, m_pinLine(new QGraphicsLineItem())
+{
+	addItem(m_pinLine);
+	m_nTimerID = startTimer(500);
+}
+TBScene::TBScene(const QRectF &sceneRect, QObject *parent )
+	:QGraphicsScene(sceneRect,parent)
+	, m_pinLine(new QGraphicsLineItem())
+{
+	addItem(m_pinLine);
+	m_nTimerID = startTimer(500);
+}
+TBScene::TBScene(qreal x, qreal y, qreal width, qreal height, QObject *parent)
+	:QGraphicsScene(x,y,width,height,parent)
+	, m_pinLine(new QGraphicsLineItem())
+{
+	addItem(m_pinLine);
+	m_nTimerID = startTimer(500);
+}
+
+void TBScene::mouseMoveEvent(QGraphicsSceneMouseEvent * e)
+{
+	QGraphicsScene::mouseMoveEvent(e);
+	if (TGraphicsTaskItem::m_pinList.size()==1)
+	{
+		m_pinLine->setLine(TGraphicsTaskItem::m_pinPoint.x(),TGraphicsTaskItem::m_pinPoint.y(),
+						   e->lastScenePos().x(),e->lastScenePos().y());
+	}
+}
+void TBScene::timerEvent(QTimerEvent * e)
+{
+	static unsigned long long colori = 0;
+	if (e->timerId()==m_nTimerID)
+	{
+		if (TGraphicsTaskItem::m_pinList.size()==1)
+		{
+			QPen pen(Qt::DotLine);
+			pen.setWidth(2);
+			pen.setColor(QColor(++colori * 49999473677 % 0xffffff));
+			m_pinLine->setPen(QPen(pen));
+		}
+		else if (m_pinLine->line().x1()||m_pinLine->line().x2())
+		{
+			m_pinLine->setLine(0,0,0,0);
+		}
+	}
+}

taskbusplatform/gui/tbscene.h

+#ifndef TBSCENE_H
+#define TBSCENE_H
+
+#include <QGraphicsScene>
+#include <QGraphicsLineItem>
+class TBScene : public QGraphicsScene
+{
+	Q_OBJECT
+public:
+	TBScene(QObject *parent = nullptr);
+	TBScene(const QRectF &sceneRect, QObject *parent = nullptr);
+	TBScene(qreal x, qreal y, qreal width, qreal height, QObject *parent = nullptr);
+protected:
+	void timerEvent(QTimerEvent * e) override;
+	void mouseMoveEvent(QGraphicsSceneMouseEvent * e) override;
+private:
+	QGraphicsLineItem * m_pinLine = nullptr;
+	int m_nTimerID = -1;
+};
+
+#endif // TBSCENE_H

taskbusplatform/gui/tgraphicstaskitem.cpp

-#include "tgraphicstaskitem.h"
+#include "tgraphicstaskitem.h"
 #include <QPainter>
 #include <QDebug>
 #include <QFileInfo>
@@ -9,6 +9,8 @@
 #include "taskmodule.h"
 
 QSet<TGraphicsTaskItem::pin_info> TGraphicsTaskItem::m_pinList;
+QPointF TGraphicsTaskItem::m_pinPoint(0,0) ;
+
 TGraphicsTaskItem::TGraphicsTaskItem(PDesignerView * pv,taskModule * pm,QGraphicsItem * para )
 	:QGraphicsItem(para),
 	 m_pPrjView(pv),
@@ -105,6 +107,8 @@ void TGraphicsTaskItem::paint(QPainter *painter, const QStyleOptionGraphicsItem
 			painter->setBrush(brold);
 			m_insbpos[src] = this->mapToScene(QPointF(-100,cell_height/2  - szz * 32+16+4));
 			m_icol[src] = linec;
+			if (m_pinList.contains(info))
+				m_pinPoint = m_insbpos[src];
 			QColor ash = QColor(0 ,	  0,	  0);
 			painter->setPen(ash);
 			painter->drawLine(-100+8,cell_height/2  - szz * 32+16+4
@@ -120,6 +124,8 @@ void TGraphicsTaskItem::paint(QPainter *painter, const QStyleOptionGraphicsItem
 			painter->setBrush(brold);
 			m_insbpos[src] = this->mapToScene(QPointF(100,cell_height/2  - szz * 32+16+4));
 			m_icol[src] = linec;
+			if (m_pinList.contains(info))
+				m_pinPoint = m_insbpos[src];
 			QColor ash = QColor(0 ,	  0,	  0);
 			painter->setPen(ash);
 			painter->drawLine(100-8,cell_height/2  - szz * 32+16+4
@@ -160,6 +166,8 @@ void TGraphicsTaskItem::paint(QPainter *painter, const QStyleOptionGraphicsItem
 							  50,8);
 			painter->setBrush(brold);
 			m_outsbpos[dst] = this->mapToScene(QPointF(100,cell_height/2  - szz * 32+16+4));
+			if (m_pinList.contains(info))
+				m_pinPoint = m_outsbpos[dst];
 			QColor ash = QColor(0 ,	  0,	  0);
 			painter->setPen(ash);
 			painter->drawLine(100-8,cell_height/2  - szz * 32+16
@@ -174,6 +182,8 @@ void TGraphicsTaskItem::paint(QPainter *painter, const QStyleOptionGraphicsItem
 							  50,8);
 			painter->setBrush(brold);
 			m_outsbpos[dst] = this->mapToScene(QPointF(-100,cell_height/2  - szz * 32+16+4));
+			if (m_pinList.contains(info))
+				m_pinPoint = m_outsbpos[dst];
 			QColor ash = QColor(0 ,	  0,	  0);
 			painter->setPen(ash);
 			painter->drawLine(-100+8,cell_height/2  - szz * 32+16
@@ -297,6 +307,10 @@ void TGraphicsTaskItem::mousePressEvent(QGraphicsSceneMouseEvent *event)
 		{
 			m_pinList.clear();
 		}
+		else if (m_pinList.size()>1)
+		{
+			m_pPrjView->connectPins();
+		}
 	}
 
 	QGraphicsItem::mousePressEvent(event);

taskbusplatform/gui/tgraphicstaskitem.h

@@ -52,6 +52,7 @@ protected:
 	QMap<QString,QColor> m_icol;
 	int cellSize(QMap<QString,int> *mp_SrcPos, QMap<QString,int> *mp_DstPos) const;
 public:
+	static QPointF m_pinPoint;
 	static QSet<pin_info> m_pinList;
 };
 

taskbusplatform/taskbusplatform.pro

@@ -59,7 +59,8 @@ SOURCES += \
     core/process_prctl.cpp \
     watchdog/tbwatchdog.cpp \
     watchdog/watchmemmodule.cpp \
-    gui/custom_item_editor.cpp
+    gui/custom_item_editor.cpp \
+    gui/tbscene.cpp
 
 HEADERS += \
     core/tasknode.h \
@@ -78,8 +79,8 @@ HEADERS += \
     ../tb_interface/tb_interface.h \
     watchdog/profile_log.h \
     watchdog/tbwatchdog.h \
-    watchdog/watchmemmodule.h
-
+    watchdog/watchmemmodule.h \
+    gui/tbscene.h
 
 FORMS += \
     gui/taskbusplatformfrm.ui \