From 9ad10aa183ff887661ac5c89fa27d9f8d209a48a Mon Sep 17 00:00:00 2001
From: Otmane Lahlou <otmane.lahlou@c-s.fr>
Date: Wed, 27 Feb 2013 19:04:19 +0100
Subject: [PATCH] ENH: add Qlabel to print the image indicies when moving mouse

---
 Code/Application/mvdMainWindow.cxx | 42 +++++++++++++++++++++++-------
 Code/Application/mvdMainWindow.h   | 14 ++++++++++
 2 files changed, 47 insertions(+), 9 deletions(-)

diff --git a/Code/Application/mvdMainWindow.cxx b/Code/Application/mvdMainWindow.cxx
index 51642bb54c..566192b390 100644
--- a/Code/Application/mvdMainWindow.cxx
+++ b/Code/Application/mvdMainWindow.cxx
@@ -84,38 +84,40 @@ MainWindow
   setWindowTitle( PROJECT_NAME );
 
   // instanciate the manipulator and the renderer relative to this widget
-  ImageViewManipulator* imageViewManipulator = new ImageViewManipulator();
-  ImageModelRenderer* imageModelRenderer = new ImageModelRenderer();
+  m_ImageViewManipulator = new ImageViewManipulator();
+  m_ImageModelRenderer   = new ImageModelRenderer();
 
   // set the GLImageWidget as the centralWidget in MainWindow.
   setCentralWidget(
     new GLImageWidget(
-      imageViewManipulator,
-      imageModelRenderer,
+      m_ImageViewManipulator,
+      m_ImageModelRenderer,
       this
     )
   );
-
-  // instanciate the Ql manipulator/renderer here to be able to connect
-  // its signals to the centralWidget manipulator slots
+  
+  // instanciate the Ql manipulator/renderer 
   m_QLModelRenderer   = new ImageModelRenderer();
   m_QLViewManipulator = new QuicklookViewManipulator();
 
   // Connect centralWidget manipulator to Ql renderer when viewportRegionChanged
   QObject::connect(
-    imageViewManipulator, SIGNAL( ViewportRegionRepresentationChanged(const PointType&, const PointType&) ), 
+    m_ImageViewManipulator, SIGNAL( ViewportRegionRepresentationChanged(const PointType&, const PointType&) ), 
     m_QLModelRenderer, SLOT( OnViewportRegionRepresentationChanged(const PointType&, const PointType&) )
     );
 
   // Connect ql mousePressEventpressed to centralWidget manipulator
   QObject::connect(
     m_QLViewManipulator, SIGNAL( ViewportRegionChanged(double, double) ), 
-    imageViewManipulator, SLOT( OnViewportRegionChanged(double, double) )
+    m_ImageViewManipulator, SLOT( OnViewportRegionChanged(double, double) )
   );
 
   // add the needed docks 
   InitializeDockWidgets();
 
+  // add needed widget to the status bar
+  InitializeStatusBarWidgets();
+
   // Connect Quit action of main menu to QApplication's quit() slot.
   QObject::connect(
     m_UI->action_Quit, SIGNAL( activated() ),
@@ -142,6 +144,27 @@ MainWindow
   Application::Instance()->SetModel( NULL );
 }
 
+/*****************************************************************************/
+void
+MainWindow
+::InitializeStatusBarWidgets()
+{
+  // Add a QLabel to the status bar to show pixel coordinates
+  QLabel * currentPixelLabel = new QLabel(statusBar());
+  currentPixelLabel->setAlignment(Qt::AlignCenter);
+  
+  // connect this widget to receive notification from 
+  // ImageViewManipulator
+  QObject::connect(
+    m_ImageViewManipulator, 
+    SIGNAL( CurrentCoordinatesUpdated(const QString& ) ),
+    currentPixelLabel,
+    SLOT( setText(const QString &) )
+  );
+  
+  statusBar()->addWidget(currentPixelLabel);
+}
+
 /*****************************************************************************/
 void
 MainWindow
@@ -150,6 +173,7 @@ MainWindow
   //
   // EXPERIMENTAL QUICKLOOK Widget.
   assert( qobject_cast< GLImageWidget* >( centralWidget() )!=NULL );
+
   GLImageWidget* qlWidget = new GLImageWidget(
     m_QLViewManipulator,
     m_QLModelRenderer,
diff --git a/Code/Application/mvdMainWindow.h b/Code/Application/mvdMainWindow.h
index fe867e22f9..da65110184 100644
--- a/Code/Application/mvdMainWindow.h
+++ b/Code/Application/mvdMainWindow.h
@@ -63,6 +63,7 @@ namespace mvd
 // Internal class pre-declaration.
 class AbstractModel;
 class AbstractModelController;
+class ImageViewManipulator;
 class QuicklookViewManipulator;
 class ImageModelRenderer;
 
@@ -130,6 +131,9 @@ private:
   /** */
   void InitializeDockWidgets();
 
+  /** */
+  void InitializeStatusBarWidgets();
+
   /** */
   QDockWidget*
     AddWidgetToDock( QWidget* widget,
@@ -175,6 +179,16 @@ private:
    */
   Ui::MainWindow* m_UI;
 
+  /**
+   * \brief centralView manipulator.
+   */
+  ImageViewManipulator*   m_ImageViewManipulator;
+  
+  /**
+   * \brief centralView manipulator.
+   */
+  ImageModelRenderer*     m_ImageModelRenderer;
+
   /**
    * \brief ql manipulator.
    */
-- 
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