src/GraphicsView/GraphicsView_Viewer.h

   1 // Copyright (C) 2013-2023  CEA/DEN, EDF R&D, OPEN CASCADE
   2 //
   3 // This library is free software; you can redistribute it and/or
   4 // modify it under the terms of the GNU Lesser General Public
   5 // License as published by the Free Software Foundation; either
   6 // version 2.1 of the License, or (at your option) any later version.
   7 //
   8 // This library is distributed in the hope that it will be useful,
   9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11 // Lesser General Public License for more details.
  12 //
  13 // You should have received a copy of the GNU Lesser General Public
  14 // License along with this library; if not, write to the Free Software
  15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  16 //
  17 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
  18 //
  19
  20 #ifndef GRAPHICSVIEW_VIEWER_H
  21 #define GRAPHICSVIEW_VIEWER_H
  22
  23 #include "GraphicsView.h"
  24
  25 #include "GraphicsView_Defs.h"
  26
  27 #include <SUIT_ViewModel.h>
  28
  29 #include <QPainterPath>
  30
  31 class QGraphicsSceneMouseEvent;
  32 class QGraphicsSceneWheelEvent;
  33 class QKeyEvent;
  34
  35 class SUIT_ViewWindow;
  36
  37 class GraphicsView_Selector;
  38 class GraphicsView_Scene;
  39 class GraphicsView_ViewTransformer;
  40 class GraphicsView_ViewFrame;
  41 class GraphicsView_ViewPort;
  42
  43 /*
  44   Class       : GraphicsView_Viewer
  45   Description : View model of the graphics view
  46 */
  47 class GRAPHICSVIEW_API GraphicsView_Viewer: public SUIT_ViewModel
  48 {
  49   Q_OBJECT
  50
  51 public:
  52   enum TransformType { NoTransform, Reset, FitAll, FitRect, FitSelect,
  53                        Zoom, PanGlobal, Pan, FitWidth, UserTransform = 100 };
  54 public:
  55   GraphicsView_Viewer( const QString& title, QWidget* widget = NULL );
  56   ~GraphicsView_Viewer();
  57
  58 public:
  59   virtual SUIT_ViewWindow*      createView( SUIT_Desktop* );
  60
  61   virtual QString               getType() const { return Type(); }
  62   static QString                Type() { return "GraphicsView";  }
  63
  64   virtual void                  contextMenuPopup( QMenu* );
  65
  66 public:
  67   GraphicsView_Selector*        getSelector();
  68
  69   GraphicsView_ViewFrame*       getActiveView() const;
  70   GraphicsView_ViewPort*        getActiveViewPort() const;
  71   GraphicsView_Scene*           getActiveScene() const;
  72
  73   void                          activateTransform( int );
  74
  75   bool                          isInitialized() const { return myIsInitialized; }
  76   void                          setIsInitialized( bool );
  77
  78 signals:
  79   void                          selectionChanged( GV_SelectionChangeStatus );
  80   void                          wheelScaleChanged();
  81
  82 protected:
  83   virtual GraphicsView_ViewTransformer* createTransformer( int );
  84   virtual GraphicsView_ViewFrame* createViewFrame( SUIT_Desktop* theDesktop, QWidget* theWidget );
  85
  86   virtual void                  onTransformationStarted();
  87   virtual void                  onTransformationFinished();
  88
  89 protected slots:
  90   virtual void                  onKeyEvent( QKeyEvent* );
  91   virtual void                  onMouseEvent( QGraphicsSceneMouseEvent* );
  92   virtual void                  onWheelEvent( QGraphicsSceneWheelEvent* );
  93
  94   virtual void                  onSketchingFinished( QPainterPath );
  95
  96   virtual void                  onSelectionDone( GV_SelectionChangeStatus );
  97   virtual void                  onSelectionCancel();
  98
  99   virtual void                  onChangeBgColor();
 100
 101   // testing ImageViewer
 102   /*
 103   void                          onAddImage();
 104   void                          onRemoveImages();
 105   void                          onBringToFront();
 106   void                          onSendToBack();
 107   void                          onBringForward();
 108   void                          onSendBackward();
 109   void                          onPrsProperties();
 110   void                          onTestFuseOperator();
 111   void                          onTestCropOperatorPrepare();
 112   void                          onTestCropOperatorPerform( QPainterPath thePath );
 113   */
 114
 115 protected:
 116   virtual void                  handleKeyPress( QKeyEvent* );
 117   virtual void                  handleKeyRelease( QKeyEvent* );
 118   virtual void                  handleMouseMove( QGraphicsSceneMouseEvent* );
 119   virtual void                  handleMousePress( QGraphicsSceneMouseEvent* );
 120   virtual void                  handleMouseRelease( QGraphicsSceneMouseEvent* );
 121   virtual void                  handleWheel( QGraphicsSceneWheelEvent* );
 122
 123   // testing ImageViewer
 124   enum QueueOperation { BringToFront, SendToBack, BringForward, SendBackward };
 125   void                          processQueueOperation( const QueueOperation );
 126
 127 protected:
 128   GraphicsView_Selector*        mySelector;
 129   GraphicsView_ViewTransformer* myTransformer;
 130   QWidget*                      myWidget;
 131
 132   bool                          myIsInitialized;
 133 };
 134
 135 #endif