qtgui: adding menu option to qtgui sinks to set transparency (alpha) value on lines/markers.

author: Tom Rondeau <trondeau@vt.edu> 2012-10-03 22:27:23 -0400
committer: Tom Rondeau <trondeau@vt.edu> 2012-10-03 22:27:23 -0400
commit: 62ab0377d5ba26ac63f97c8e3802c7cd1a92f18c (patch)
tree: 8c147520279cc788d8c1c1317727024ef788c51a /gr-qtgui
parent: 48feecf3eaf2b16d0e211dcb5690aeb0f22d9c0d (diff)
5 files changed, 103 insertions, 0 deletions
diff --git a/gr-qtgui/lib/DisplayPlot.cc b/gr-qtgui/lib/DisplayPlot.cc
index 1199b6456e..ca3f7899be 100644
--- a/gr-qtgui/lib/DisplayPlot.cc
+++ b/gr-qtgui/lib/DisplayPlot.cc
@@ -186,6 +186,33 @@ DisplayPlot::setLineMarker(int which, QwtSymbol::Style marker)
 }
 
 void
+DisplayPlot::setMarkerAlpha(int which, int alpha)
+{
+  // Get the pen color
+  QPen pen(_plot_curve[which]->pen());
+  QColor color = pen.color();
+
+  // Set new alpha and update pen
+  color.setAlpha(alpha);
+  pen.setColor(color);
+  _plot_curve[which]->setPen(pen);
+
+  // And set the new color for the markers
+#if QWT_VERSION < 0x060000
+  //_plot_curve[which]->setBrush(QBrush(QColor(color)));
+  _plot_curve[which]->setPen(pen);
+
+  QwtSymbol sym = (QwtSymbol)_plot_curve[which]->symbol();
+  setLineMarker(which, sym.style());
+#else
+  QwtSymbol *sym = (QwtSymbol*)_plot_curve[which]->symbol();
+  sym->setColor(color);
+  sym->setPen(pen);
+  _plot_curve[which]->setSymbol(sym);
+#endif
+}
+
+void
 DisplayPlot::setStop(bool on)
 {
   _stop = on;  
diff --git a/gr-qtgui/lib/DisplayPlot.h b/gr-qtgui/lib/DisplayPlot.h
index 975a92a18d..fc7c061123 100644
--- a/gr-qtgui/lib/DisplayPlot.h
+++ b/gr-qtgui/lib/DisplayPlot.h
@@ -64,6 +64,7 @@ public slots:
   void setLineWidth(int which, int width);
   void setLineStyle(int which, Qt::PenStyle style);
   void setLineMarker(int which, QwtSymbol::Style marker);
+  void setMarkerAlpha(int which, int alpha);
 
   void setStop(bool on);
 
diff --git a/gr-qtgui/lib/displayform.cc b/gr-qtgui/lib/displayform.cc
index 68e1a5c4fd..c011511b6f 100644
--- a/gr-qtgui/lib/displayform.cc
+++ b/gr-qtgui/lib/displayform.cc
@@ -55,6 +55,7 @@ DisplayForm::DisplayForm(int nplots, QWidget* parent)
     _line_width_menu.push_back(new LineWidthMenu(i, this));
     _line_style_menu.push_back(new LineStyleMenu(i, this));
     _line_marker_menu.push_back(new LineMarkerMenu(i, this));
+    _marker_alpha_menu.push_back(new MarkerAlphaMenu(i, this));
 
     connect(_line_title_act[i], SIGNAL(whichTrigger(int, const QString&)),
 	    this, SLOT(setTitle(int, const QString&)));
@@ -78,6 +79,11 @@ DisplayForm::DisplayForm(int nplots, QWidget* parent)
       connect(_line_marker_menu[i], SIGNAL(whichTrigger(int, QwtSymbol::Style)),
 	      this, SLOT(setLineMarker(int, QwtSymbol::Style)));
     }
+
+    for(int j = 0; j < _marker_alpha_menu[i]->getNumActions(); j++) {
+      connect(_marker_alpha_menu[i], SIGNAL(whichTrigger(int, int)),
+	      this, SLOT(setMarkerAlpha(int, int)));
+    }
     
     _lines_menu.push_back(new QMenu(tr(""), this));
     _lines_menu[i]->addAction(_line_title_act[i]);
@@ -85,6 +91,7 @@ DisplayForm::DisplayForm(int nplots, QWidget* parent)
     _lines_menu[i]->addMenu(_line_width_menu[i]);
     _lines_menu[i]->addMenu(_line_style_menu[i]);
     _lines_menu[i]->addMenu(_line_marker_menu[i]);
+    _lines_menu[i]->addMenu(_marker_alpha_menu[i]);
     _menu->addMenu(_lines_menu[i]);
   }
 
@@ -212,6 +219,13 @@ DisplayForm::setLineMarker(int which, QwtSymbol::Style marker)
 }
 
 void
+DisplayForm::setMarkerAlpha(int which, int alpha)
+{
+  _displayPlot->setMarkerAlpha(which, alpha);
+  _displayPlot->replot();
+}
+
+void
 DisplayForm::setStop(bool on)
 {
   if(!on) {
diff --git a/gr-qtgui/lib/displayform.h b/gr-qtgui/lib/displayform.h
index 82b28c745d..c14b734d44 100644
--- a/gr-qtgui/lib/displayform.h
+++ b/gr-qtgui/lib/displayform.h
@@ -58,6 +58,7 @@ public slots:
   void setLineWidth(int which, int width);
   void setLineStyle(int which, Qt::PenStyle style);
   void setLineMarker(int which, QwtSymbol::Style style);
+  void setMarkerAlpha(int which, int alpha);
 
   void setStop(bool on);
   void setStop();
@@ -96,6 +97,7 @@ protected:
   QList<LineWidthMenu*> _line_width_menu;
   QList<LineStyleMenu*> _line_style_menu;
   QList<LineMarkerMenu*> _line_marker_menu;
+  QList<MarkerAlphaMenu*> _marker_alpha_menu;
 
   QTimer *d_displayTimer;
   double d_update_time;
diff --git a/gr-qtgui/lib/form_menus.h b/gr-qtgui/lib/form_menus.h
index 01695f2c46..c84ecbfb44 100644
--- a/gr-qtgui/lib/form_menus.h
+++ b/gr-qtgui/lib/form_menus.h
@@ -347,6 +347,65 @@ private:
 /********************************************************************/
 
 
+class MarkerAlphaMenu: public QMenu
+{
+  Q_OBJECT
+
+public:
+  MarkerAlphaMenu(int which, QWidget *parent)
+    : QMenu("Line Transparency", parent), d_which(which)
+  {
+    d_act.push_back(new QAction("None", this));
+    d_act.push_back(new QAction("Low", this));
+    d_act.push_back(new QAction("Medium", this));
+    d_act.push_back(new QAction("High", this));
+
+    connect(d_act[0], SIGNAL(triggered()), this, SLOT(getNone()));
+    connect(d_act[1], SIGNAL(triggered()), this, SLOT(getLow()));
+    connect(d_act[2], SIGNAL(triggered()), this, SLOT(getMedium()));
+    connect(d_act[3], SIGNAL(triggered()), this, SLOT(getHigh()));
+
+    QListIterator<QAction*> i(d_act);
+    while(i.hasNext()) {
+      QAction *a = i.next();
+      addAction(a);
+    }
+  }
+
+  ~MarkerAlphaMenu()
+  {}
+
+  int getNumActions() const
+  {
+    return d_act.size();
+  }
+  
+  QAction * getAction(int which)
+  {
+    if(which < d_act.size())
+      return d_act[which];
+    else
+      throw std::runtime_error("MarkerAlphaMenu::getAction: which out of range.\n");
+  }
+
+signals:
+  void whichTrigger(int which, int);
+
+public slots:
+  void getNone()   { emit whichTrigger(d_which, 255); }
+  void getLow()    { emit whichTrigger(d_which, 200); }
+  void getMedium() { emit whichTrigger(d_which, 125); }
+  void getHigh()   { emit whichTrigger(d_which, 50); }
+
+private:
+  QList<QAction *> d_act;
+  int d_which;
+};
+
+
+/********************************************************************/
+
+
 class LineTitleAction: public QAction
 {
   Q_OBJECT
author	Tom Rondeau <trondeau@vt.edu>	2012-10-03 22:27:23 -0400
committer	Tom Rondeau <trondeau@vt.edu>	2012-10-03 22:27:23 -0400
commit	62ab0377d5ba26ac63f97c8e3802c7cd1a92f18c (patch)
tree	8c147520279cc788d8c1c1317727024ef788c51a /gr-qtgui
parent	48feecf3eaf2b16d0e211dcb5690aeb0f22d9c0d (diff)