Dennis: Initial version of a simple examiner widget.

git-svn-id: http://www.openflipper.org/svnrepo/OpenFlipper/branches/Free@6661 383ad7c9-94d9-4d36-a494-682f7c89f535

OpenFlipper/widgets/glWidget/simpleGLGraphicsScene.cc

+//=============================================================================
+//
+//                               OpenFlipper
+//        Copyright (C) 2008 by Computer Graphics Group, RWTH Aachen
+//                           www.openflipper.org
+//
+//-----------------------------------------------------------------------------
+//
+//                                License
+//
+//  OpenFlipper is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU Lesser General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+//
+//  OpenFlipper is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU Lesser General Public License for more details.
+//
+//  You should have received a copy of the GNU Lesser General Public License
+//  along with OpenFlipper.  If not, see <http://www.gnu.org/licenses/>.
+//
+//-----------------------------------------------------------------------------
+//
+//   $Revision: 5979 $
+//   $Author: moebius $
+//   $Date: 2009-05-07 10:57:06 +0200 (Do, 07. Mai 2009) $
+//
+//=============================================================================
+
+
+
+
+//=============================================================================
+//
+//  CLASS SimpleGLGraphicsScene - IMPLEMENTATION
+//
+//=============================================================================
+
+//== INCLUDES =================================================================
+
+#include <OpenFlipper/BasePlugin/PluginFunctions.hh>
+#include <OpenFlipper/widgets/glWidget/QtBaseViewer.hh>
+#include <QApplication>
+#include <QPainter>
+#include <QPaintEngine>
+#include <QGraphicsSceneMouseEvent>
+#include <QGraphicsSceneDragDropEvent>
+
+#include "simpleGLGraphicsScene.hh"
+
+//== NAMESPACES ===============================================================
+
+//== IMPLEMENTATION ===========================================================
+
+SimpleGLGraphicsScene::SimpleGLGraphicsScene () :
+  QGraphicsScene (),
+  view_(),
+  initialized_(false)
+{
+}
+
+
+void SimpleGLGraphicsScene::drawBackground(QPainter *_painter, const QRectF &_rect)
+{
+  if (_painter->paintEngine()->type() != QPaintEngine::OpenGL) {
+    std::cerr << "SimpleGLGraphicsScene: drawBackground needs a QGLWidget to be set as viewport on the graphics view\n";
+    return;
+  }
+
+  if (!view_)
+    return;
+
+  if (!initialized_)
+  {
+    // we use GLEW to manage extensions
+    // initialize it first
+    glewInit();
+    view_->initializeGL();
+    initialized_ = true;
+  }
+
+  _painter->setBackground(QApplication::palette().window());
+  _painter->eraseRect(_rect);
+
+  view_->paintGL();
+}
+
+
+void SimpleGLGraphicsScene::mouseMoveEvent(QGraphicsSceneMouseEvent* _e)
+{
+  QGraphicsScene::mouseMoveEvent(_e);
+  if (_e->isAccepted())
+    return;
+
+  if (view_)
+    view_->mouseMoveEvent(_e);
+}
+
+void SimpleGLGraphicsScene::setView(glViewer * _view)
+{
+  view_ = _view;
+}
+
+//=============================================================================
+//=============================================================================
+
+

OpenFlipper/widgets/glWidget/simpleGLGraphicsScene.hh

+//=============================================================================
+//
+//                               OpenFlipper
+//        Copyright (C) 2008 by Computer Graphics Group, RWTH Aachen
+//                           www.openflipper.org
+//
+//-----------------------------------------------------------------------------
+//
+//                                License
+//
+//  OpenFlipper is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU Lesser General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+//
+//  OpenFlipper is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU Lesser General Public License for more details.
+//
+//  You should have received a copy of the GNU Lesser General Public License
+//  along with OpenFlipper.  If not, see <http://www.gnu.org/licenses/>.
+//
+//-----------------------------------------------------------------------------
+//
+//   $Revision: 5979 $
+//   $Author: moebius $
+//   $Date: 2009-05-07 10:57:06 +0200 (Do, 07. Mai 2009) $
+//
+//=============================================================================
+
+
+
+#ifndef SIMPLEGLGRAPHICSSCENE_HH
+#define SIMPLEGLGRAPHICSSCENE_HH
+
+//=============================================================================
+//
+//  CLASS SimpleGLGraphicsScene - IMPLEMENTATION
+//
+//=============================================================================
+
+//== INCLUDES =================================================================
+
+#include <OpenFlipper/common/GlobalDefines.hh>
+#include <QGraphicsScene>
+#include <QGraphicsItem>
+
+//== FORWARDDECLARATIONS ======================================================
+class glViewer;
+
+//== NAMESPACES ===============================================================
+
+//== CLASS DEFINITION =========================================================
+
+
+
+/** OpenGL drawing area and widget scene -- for \a internal use only.
+    The scene basically redirects calls to a
+    ACG::QtWidgets::glViewer, the corresponding virtual methods there
+    are prefixed with \c gl.
+    \sa ACG::QtWidgets::glViewer
+*/
+
+class DLLEXPORT SimpleGLGraphicsScene : public QGraphicsScene
+{
+Q_OBJECT
+
+public:
+  SimpleGLGraphicsScene();
+
+  void setView (glViewer *_view);
+
+protected:
+
+  virtual void drawBackground(QPainter *_painter, const QRectF &_rect);
+
+  virtual void mouseMoveEvent(QGraphicsSceneMouseEvent* _e);
+
+private:
+
+  glViewer *view_;
+
+  bool initialized_;
+};
+
+#endif
+
+//=============================================================================
+//=============================================================================

OpenFlipper/widgets/glWidget/simpleViewer.cc

+//=============================================================================
+//
+//                               OpenFlipper
+//        Copyright (C) 2008 by Computer Graphics Group, RWTH Aachen
+//                           www.openflipper.org
+//
+//-----------------------------------------------------------------------------
+//
+//                                License
+//
+//  OpenFlipper is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU Lesser General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+//
+//  OpenFlipper is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU Lesser General Public License for more details.
+//
+//  You should have received a copy of the GNU Lesser General Public License
+//  along with OpenFlipper.  If not, see <http://www.gnu.org/licenses/>.
+//
+//-----------------------------------------------------------------------------
+//
+//   $Revision: 5162 $
+//   $Author: moebius $
+//   $Date: 2009-02-27 17:40:45 +0100 (Fr, 27. Feb 2009) $
+//
+//=============================================================================
+
+
+
+
+//=============================================================================
+//
+//  CLASS SimpleViewer - IMPLEMENTATION
+//
+//=============================================================================
+
+//== INCLUDES =================================================================
+
+#include <OpenFlipper/common/GlobalOptions.hh>
+#include <OpenFlipper/BasePlugin/PluginFunctions.hh>
+#include <OpenFlipper/widgets/glWidget/QtBaseViewer.hh>
+#include <ACG/Scenegraph/DrawModes.hh>
+#include "simpleGLGraphicsScene.hh"
+
+#include "simpleViewer.hh"
+
+//== NAMESPACES ===============================================================
+
+
+//== CLASS DEFINITION =========================================================
+
+
+SimpleViewer::SimpleViewer(QWidget* _parent) :
+  QGraphicsView (_parent),
+  actionMode_ (Viewer::ExamineMode)
+{
+  QGLWidget *share = PluginFunctions::shareGLWidget (); 
+  if (!share)
+    initialize (QGLFormat::defaultFormat (), 0);
+  else
+    initialize (share->format(), share);
+}
+
+SimpleViewer::~SimpleViewer()
+{
+}
+
+void SimpleViewer::resizeEvent(QResizeEvent *_event) {
+  QGraphicsView::resizeEvent(_event);
+  if (scene())
+  {
+    scene()->setSceneRect(QRect(QPoint(0, 0), _event->size()));
+    mainWidget_->setGeometry (QRect(QPoint(0, 0), _event->size()));
+  }
+  
+}
+
+
+//=============================================================================
+//=============================================================================
+
+void SimpleViewer::initialize (const QGLFormat & _format, QGLWidget *_shareWidget)
+{
+
+  connect (&props_, SIGNAL( getPickMode(std::string&) ),
+           this, SLOT( getPickMode(std::string&) ),Qt::DirectConnection );
+  connect (&props_, SIGNAL( getActionMode(Viewer::ActionMode&) ),
+           this, SLOT( getActionMode(Viewer::ActionMode&) ),Qt::DirectConnection );
+  connect (&props_, SIGNAL( setActionMode(const Viewer::ActionMode) ),
+           this, SLOT( setActionMode(const Viewer::ActionMode)), Qt::DirectConnection );
+
+  glWidget_ = new QGLWidget (_format, 0, _shareWidget);
+
+  setFocusPolicy (Qt::StrongFocus);
+  setAcceptDrops (true);
+  setViewport(glWidget_);
+  setViewportUpdateMode(QGraphicsView::FullViewportUpdate);
+
+  scene_ = new SimpleGLGraphicsScene ();
+
+  setScene (scene_);
+
+  mainWidget_ = new glViewer (scene_, glWidget_, props_);
+
+  scene_->addItem (mainWidget_);
+  scene_->setView (mainWidget_);
+  mainWidget_->setGeometry (QRect(QPoint(0, 0), size()));
+
+  mainWidget_->sceneGraph (PluginFunctions::getSceneGraphRootNode (), true);
+
+  props_.drawMode (OpenFlipper::Options::standardDrawMode());
+}
+
+void SimpleViewer::setActionMode(const Viewer::ActionMode _am)
+{
+  actionMode_ = _am;
+}
+
+void SimpleViewer::getActionMode(Viewer::ActionMode & _am)
+{
+  _am = actionMode_;
+}
+
+void SimpleViewer::getPickMode(std::string & _name)
+{
+  _name = "SimpleViewer";
+}
+
+Viewer::ViewerProperties & SimpleViewer::properties()
+{
+  return props_;
+}
+
+glViewer * SimpleViewer::viewer()
+{
+  return mainWidget_;
+}
+

OpenFlipper/widgets/glWidget/simpleViewer.hh

+//=============================================================================
+//
+//                               OpenFlipper
+//        Copyright (C) 2008 by Computer Graphics Group, RWTH Aachen
+//                           www.openflipper.org
+//
+//-----------------------------------------------------------------------------
+//
+//                                License
+//
+//  OpenFlipper is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU Lesser General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+//
+//  OpenFlipper is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU Lesser General Public License for more details.
+//
+//  You should have received a copy of the GNU Lesser General Public License
+//  along with OpenFlipper.  If not, see <http://www.gnu.org/licenses/>.
+//
+//-----------------------------------------------------------------------------
+//
+//   $Revision: 5162 $
+//   $Author: moebius $
+//   $Date: 2009-02-27 17:40:45 +0100 (Fr, 27. Feb 2009) $
+//
+//=============================================================================
+
+
+#ifndef SIMPLEVIEWER_HH
+#define SIMPLEVIEWER_HH
+
+//=============================================================================
+//
+//  CLASS simpleViewer - IMPLEMENTATION
+//
+//=============================================================================
+
+//== INCLUDES =================================================================
+
+#include <OpenFlipper/common/ViewerProperties.hh>
+#include <OpenFlipper/common/GlobalDefines.hh>
+#include <QGraphicsView>
+#include <QGLFormat>
+
+
+
+//== NAMESPACES ===============================================================
+
+//== FORWARDDECLARATIONS ======================================================
+class SimpleGLGraphicsScene;
+class glViewer;
+
+
+//== CLASS DEFINITION =========================================================
+
+
+/** simple scene graph viewer
+*/
+
+class DLLEXPORT SimpleViewer : public QGraphicsView
+{
+ Q_OBJECT
+
+  public:
+    /// Constructor
+    SimpleViewer(QWidget* _parent = NULL);
+
+    /// Destructor
+    ~SimpleViewer();
+
+    /// Viewer properties
+    Viewer::ViewerProperties& properties ();
+
+    /// Viewer
+    glViewer * viewer ();
+
+  protected:
+    // handle resizes
+    virtual void resizeEvent(QResizeEvent *_event);
+
+  private:
+    // initalisation
+    void initialize (const QGLFormat &_format, QGLWidget *_shareWidget = NULL);
+
+  private slots:
+
+    // action mode handling for ViewerProperties
+    void setActionMode(const Viewer::ActionMode  _am);
+    void getActionMode(Viewer::ActionMode& _am);
+
+    // pick mode name handling for ViewerProperties
+    void getPickMode(std::string& _name);
+
+  private:
+    QGLWidget *glWidget_;
+
+    Viewer::ViewerProperties props_;
+
+    SimpleGLGraphicsScene *scene_;
+    glViewer *mainWidget_;
+
+    Viewer::ActionMode actionMode_;
+};
+
+//=============================================================================
+
+//=============================================================================
+#endif