Add lidar camera toolbar

This "Lidar Camera Toolbar" is almost the same as the paraview's camera toolbar.
In paraview the "set view Direction" buttons reset the center of rotation to the center of the data.
For Lidar data the center of data is less important than the position of the lidar.
So in this "Lidar camera toolbar", the "set view direction" reset the center of rotation to the lidar position (0,0,0).

The MR VeloView-Velodyne!37 (merged) replace the paraview camera toolbar by the LidarCameraToolBar

ApplicationComponents/lqSpreadSheetManager.cxx

@@ -17,13 +17,23 @@
 #include <pqObjectBuilder.h>
 #include <pqApplicationCore.h>
 #include <pqActiveObjects.h>
-#include <pqSettings.h>
+
+#include <vtkEventQtSlotConnect.h>
+#include "vtkSMProperty.h"
+#include <vtkSMPropertyHelper.h>
+#include <vtkSMViewProxy.h>
 
 #include <assert.h>
 
 //-----------------------------------------------------------------------------
 lqSpreadSheetManager::lqSpreadSheetManager(QObject* parent) : QObject(parent)
 {
+  this->Settings = pqApplicationCore::instance()->settings();
+
+  // we disable the "show only selection" because otherwise if you quit LidarView with this option ON
+  // when you will open Lidarview again the Spreadsheet will be empty because no points are selected.
+  // This can be misleading for the user so we set this property to false on opening of lidarview
+  this->Settings->setValue("ShowOnlySelectedElement", false);
 }
 
 //-----------------------------------------------------------------------------
@@ -66,6 +76,12 @@ void lqSpreadSheetManager::constructSpreadSheet()
   QObject::connect(this->SpreadSheetView, SIGNAL(endRender()), this, SLOT(onSpreadSheetEndRender()));
   QObject::connect(this, SIGNAL(saveColumnSelection()), this, SLOT(onSaveColumnSelection()));
 
+  // Connect the "Selection only" property to a slot to save this property information
+  vtkEventQtSlotConnect* connector = vtkEventQtSlotConnect::New();
+  vtkSMViewProxy* viewModule = this->SpreadSheetView->getViewProxy();
+  connector->Connect(viewModule->GetProperty("SelectionOnly"), vtkCommand::ModifiedEvent,
+    this, SLOT(onSpreadSheetSelectionOnly()));
+
   this->SpreadSheetViewDec = new pqSpreadSheetViewDecorator(this->SpreadSheetView);
   this->SpreadSheetViewDec->setPrecision(3);
   this->SpreadSheetViewDec->setFixedRepresentation(true);
@@ -164,19 +180,18 @@ void lqSpreadSheetManager::conditionnallyHideColumn(const std::string& condition
 //-----------------------------------------------------------------------------
 void lqSpreadSheetManager::onSpreadSheetEndRender()
 {
-  // endRender may not be the best signal to use because it will be called at
-  // each frame whereas we would prefer to update only when the source is
-  // changed. However I tried pqSpreadSheetView::showing and
-  // pqSpreadSheetView::viewportUpdated but none worked because column names
-  // are not yet updated
-  if (this->getCurrentShownObjectName() != this->lastShownObjectName)
-  {
-    conditionnallyHideColumn("Data", "Points_m_XYZ"); // hide dupe of pt coords
-    conditionnallyHideColumn("TrailingFrame", "Points_m_XYZ");
+  // Every time the spreadsheet has to be rendered:
+  // - we hide the column "Points_m_XYZ" because it's too wide.
+  // - we check which columns have to be displayed (some of them could have been hidden by the user
+  // We do this every time (not only for each new frame)
+  // Because if the user opens and closes the spreadsheet on the same frame, it should display the same things.
 
-    this->restoreColumnSelection();
-  }
-  this->lastShownObjectName = this->getCurrentShownObjectName();
+
+  conditionnallyHideColumn("Data", "Points_m_XYZ"); // hide dupe of pt coords
+  conditionnallyHideColumn("TrailingFrame", "Points_m_XYZ");
+
+  this->restoreShowOnlySelectedElement();
+  this->restoreColumnSelection();
 }
 
 //-----------------------------------------------------------------------------
@@ -215,8 +230,6 @@ void lqSpreadSheetManager::onSaveColumnSelection()
     return;
   }
 
-  pqSettings* settings = pqApplicationCore::instance()->settings();
-
   const int cols = this->SpreadSheetView->getViewModel()->columnCount();
   QStringList hiddenArrays;
   for (int i = 0; i < cols; i++)
@@ -229,22 +242,37 @@ void lqSpreadSheetManager::onSaveColumnSelection()
   }
 
   std::string key = getHiddenArraysKey(this->getCurrentShownObjectName());
-  settings->setValue(key.c_str(), hiddenArrays);
+  this->Settings->setValue(key.c_str(), hiddenArrays);
 }
 
 //-----------------------------------------------------------------------------
 void lqSpreadSheetManager::restoreColumnSelection()
 {
-  pqSettings* settings = pqApplicationCore::instance()->settings();
   std::string objectName = this->getCurrentShownObjectName();
   std::string key = getHiddenArraysKey(objectName);
-  QStringList hiddenArrays = settings->value(key.c_str()).toStringList();
+  QStringList hiddenArrays = this->Settings->value(key.c_str()).toStringList();
   foreach (QString array, hiddenArrays)
   {
     this->conditionnallyHideColumn(objectName, array.toStdString());
   }
 }
 
+//-----------------------------------------------------------------------------
+void lqSpreadSheetManager::onSpreadSheetSelectionOnly()
+{
+  // Save if "Show only selected elements" is enabled
+  int showOnlySelectedElement = vtkSMPropertyHelper(this->SpreadSheetView->getProxy(), "SelectionOnly").GetAsInt();
+  this->Settings->setValue("ShowOnlySelectedElement", showOnlySelectedElement);
+}
+
+//-----------------------------------------------------------------------------
+void lqSpreadSheetManager::restoreShowOnlySelectedElement()
+{
+  int showOnlySelectedElement = this->Settings->value("ShowOnlySelectedElement").toInt();
+  vtkSMPropertyHelper(this->SpreadSheetView->getProxy(), "SelectionOnly").Set(showOnlySelectedElement);
+  this->SpreadSheetView->getProxy()->UpdateProperty("SelectionOnly", true);
+}
+
 //-----------------------------------------------------------------------------
 std::string lqSpreadSheetManager::getCurrentShownObjectName()
 {