From 5339e309a08ff2d1434d1d41dffd62594552dc84 Mon Sep 17 00:00:00 2001
From: =?utf8?q?CHEMIN=20S=C3=A9bastien=20236498?=
 <sc236498@is245491.intra.cea.fr>
Date: Fri, 17 May 2024 16:33:38 +0200
Subject: [PATCH] Adding Foreground drawing objects

---
 src/QtViewer/CMakeLists.txt             |  2 ++
 src/QtViewer/QtViewer_PainterObject.cxx | 24 ++++++++++++++++++++++++
 src/QtViewer/QtViewer_PainterObject.h   | 16 ++++++++++++++++
 src/QtViewer/QtViewer_ViewPort.cxx      | 13 ++++++++++++-
 src/QtViewer/QtViewer_ViewPort.h        |  6 ++++++
 5 files changed, 60 insertions(+), 1 deletion(-)
 create mode 100644 src/QtViewer/QtViewer_PainterObject.cxx
 create mode 100644 src/QtViewer/QtViewer_PainterObject.h

diff --git a/src/QtViewer/CMakeLists.txt b/src/QtViewer/CMakeLists.txt
index 413bc41ec..2d688c202 100644
--- a/src/QtViewer/CMakeLists.txt
+++ b/src/QtViewer/CMakeLists.txt
@@ -51,6 +51,7 @@ SET(_moc_HEADERS
 SET(_other_HEADERS
   QtViewer.h
   QtViewer_Object.h
+  QtViewer_PainterObject.h
 )
 
 # header files / to install
@@ -88,6 +89,7 @@ QT_WRAP_MOC(_moc_SOURCES ${_moc_HEADERS})
 # sources / static
 SET(_other_SOURCES
   QtViewer_Object.cxx
+  QtViewer_PainterObject.cxx
   QtViewer_Scene.cxx
   QtViewer_Selector.cxx
   QtViewer_ViewFrame.cxx
diff --git a/src/QtViewer/QtViewer_PainterObject.cxx b/src/QtViewer/QtViewer_PainterObject.cxx
new file mode 100644
index 000000000..bc4bbf0d9
--- /dev/null
+++ b/src/QtViewer/QtViewer_PainterObject.cxx
@@ -0,0 +1,24 @@
+#include "QtViewer_PainterObject.h"
+  
+
+QtViewer_PainterObject::QtViewer_PainterObject()
+{
+}
+
+QtViewer_PainterObject::~QtViewer_PainterObject()
+{
+}
+
+void QtViewer_PainterObject::draw(QPainter* painter)
+{
+/*
+  painter->save();
+  painter->resetTransform();
+  double w1 = h/10.;
+  painter->setPen(QPen(Qt::black));
+  QRectF aRect(w-w1,h/4.,w1, h/2.);
+  painter->fillRect(aRect,QGradient::StarWine);
+  painter->drawRect(aRect);
+  painter->restore();
+*/
+}
diff --git a/src/QtViewer/QtViewer_PainterObject.h b/src/QtViewer/QtViewer_PainterObject.h
new file mode 100644
index 000000000..6f4a692b2
--- /dev/null
+++ b/src/QtViewer/QtViewer_PainterObject.h
@@ -0,0 +1,16 @@
+#ifndef QTVIEWER_PAINTEROBJECT_H
+#define QTVIEWER_PAINTEROBJECT_H
+
+#include "QtViewer.h"
+#include <QPainter>
+
+class QTVIEWER_API QtViewer_PainterObject 
+{
+public:
+
+  QtViewer_PainterObject();
+  ~QtViewer_PainterObject();
+
+  virtual void draw(QPainter* painter); 
+};
+#endif
diff --git a/src/QtViewer/QtViewer_ViewPort.cxx b/src/QtViewer/QtViewer_ViewPort.cxx
index 691c5fe10..040f79516 100644
--- a/src/QtViewer/QtViewer_ViewPort.cxx
+++ b/src/QtViewer/QtViewer_ViewPort.cxx
@@ -30,6 +30,8 @@
 #include "SUIT_ResourceMgr.h"
 #include "SUIT_Session.h"
 
+#include "QtViewer_PainterObject.h"
+
 //=======================================================================
 // Name    : QtViewer_ViewPort
 // Purpose : Constructor
@@ -74,6 +76,14 @@ QtViewer_ViewPort::~QtViewer_ViewPort()
   zoomCursor = nullptr;
 }
 
+void QtViewer_ViewPort::drawForeground(QPainter *painter, const QRectF &rect)
+{
+  Q_UNUSED(rect);
+
+  for (QtViewer_PainterObject* obj : foregroundObjects)
+    obj->draw(painter);
+}
+
 void QtViewer_ViewPort::addItem( QGraphicsItem* theItem )
 {
   scene()->addItem(theItem);
@@ -208,7 +218,7 @@ void QtViewer_ViewPort::mouseMoveEvent(QMouseEvent *event)
 
     }
     previousPos = currentPos;  
-
+    viewport()->update();
     }
   else if (zooming && (event->buttons() & Qt::LeftButton))
   {
@@ -311,6 +321,7 @@ void QtViewer_ViewPort::activatePanAction()
   zooming = false;
   globalPanning = false;
   setCursor(Qt::SizeAllCursor);
+  viewport()->update();
 }
 
 void QtViewer_ViewPort::activateGlobalPanAction() 
diff --git a/src/QtViewer/QtViewer_ViewPort.h b/src/QtViewer/QtViewer_ViewPort.h
index b7ddd153d..e419c91e3 100644
--- a/src/QtViewer/QtViewer_ViewPort.h
+++ b/src/QtViewer/QtViewer_ViewPort.h
@@ -23,6 +23,7 @@
 #include "QtViewer.h"
 #include <QGraphicsView>
 
+class QtViewer_PainterObject;
 class QRubberBand;
 
 /*
@@ -58,6 +59,7 @@ public:
   QImage dumpView(bool theWholeScene = false, QSizeF theSize = QSizeF());
   bool dumpViewToFormat(const QString& fileName, const QString& format);
 
+  void addForegroundObject(QtViewer_PainterObject* obj) { foregroundObjects.append(obj); }
 
 signals:
   void vpMouseEvent(QMouseEvent*);
@@ -75,6 +77,8 @@ protected:
   virtual void wheelEvent(QWheelEvent *event);
   virtual void keyPressEvent(QKeyEvent *event);
 
+  virtual void drawForeground(QPainter *painter, const QRectF &rect);
+
   void clearActions();
  
 private:
@@ -90,6 +94,8 @@ private:
   bool globalPanning;
   QPoint previousPos;
   QCursor* zoomCursor;
+
+  QList<QtViewer_PainterObject*> foregroundObjects;
 };
 
 #endif
-- 
2.39.2