src/GLViewer/GLViewer_ViewPort.h

   1 //  Copyright (C) 2005 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.
   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 //  Author : OPEN CASCADE
  20 //
  21
  22 // File:      GLViewer_ViewPort.h
  23 // Created:   November, 2004
  24
  25 #ifndef GLVIEWER_VIEWPORT_H
  26 #define GLVIEWER_VIEWPORT_H
  27
  28 #include "GLViewer.h"
  29
  30 #include <qlist.h>
  31 #include <qcolor.h>
  32 #include <qaction.h>
  33 #include <qwidget.h>
  34
  35 #include <Aspect_Window.hxx>
  36
  37 class QRect;
  38 class QCursor;
  39 class QPainter;
  40 class GLViewer_ViewSketcher;
  41 class GLViewer_ViewTransformer;
  42
  43 #ifdef WNT
  44 #pragma warning( disable:4251 )
  45 #endif
  46
  47 enum BlockStatus
  48 {
  49     BS_NoBlock          = 0x0000,
  50     BS_Highlighting     = 0x0001,
  51     BS_Selection        = 0x0002,
  52     BS_Dragging         = 0x0004
  53 };
  54
  55 /*!
  56   \class GLViewer_ViewPort
  57   Visualisation canvas of GLViewer
  58 */
  59 class GLVIEWER_API GLViewer_ViewPort: public QWidget
  60 {
  61     Q_OBJECT
  62     friend class GLViewer_ViewSketcher;
  63     friend class GLViewer_ViewTransformer;
  64
  65 public:
  66     GLViewer_ViewPort( QWidget* parent );
  67     ~GLViewer_ViewPort();
  68
  69 public:
  70     //! Activates/deactivates sketching
  71     void                             setSketchingEnabled( bool );
  72     //! Checks active status of sketcher
  73     bool                             isSketchingEnabled() const;
  74     //! Activates/deactivates transformer
  75     void                             setTransformEnabled( bool );
  76     //! Checks active status of transformer
  77     bool                             isTransformEnabled() const;
  78
  79     //! Returns background color
  80     virtual QColor                   backgroundColor() const;
  81     //! Sets background color
  82     virtual void                     setBackgroundColor( const QColor& );
  83
  84     //! Redraw external pa inters
  85     void                             redrawPainters();
  86
  87     //! Updates view
  88     virtual void                     onUpdate();
  89
  90     //! Returns blocking status for current started operations
  91     virtual BlockStatus              currentBlock(){ return BS_NoBlock; }
  92
  93 protected:
  94     enum ViewType { Type2D, Type3D };
  95     void                             selectVisualId( ViewType );
  96
  97     virtual QPaintDevice*            getPaintDevice() { return this; }
  98     virtual void                     contextMenuEvent( QContextMenuEvent * e );
  99
 100 //! STATICS
 101     static void                      createCursors();
 102     static void                      destroyCursors();
 103     static QCursor*                  getHandCursor() { return handCursor; }
 104     static void                      setHandCursor( const QCursor& newCursor );
 105     static QCursor*                  getPanCursor() { return panCursor; }
 106     static void                      setPanCursor( const QCursor& newCursor );
 107     static QCursor*                  getPanglCursor() { return panglCursor; }
 108     static void                      setPanglCursor( const QCursor& newCursor );
 109     static QCursor*                  getZoomCursor() { return zoomCursor; }
 110     static void                      setZoomCursor( const QCursor& newCursor );
 111
 112 public://ouv
 113     static QCursor*                  getDefaultCursor() { return defCursor; }
 114     static void                      setDefaultCursor( const QCursor& newCursor );
 115     static QCursor*                  getRotCursor() { return rotCursor; }
 116     static void                      setRotCursor( const QCursor& newCursor );
 117     static QCursor*                  getSketchCursor() { return sketchCursor; }
 118     static void                      setSketchCursor( const QCursor& newCursor );
 119
 120 protected:
 121 //! EVENTS
 122     virtual void                     paintEvent( QPaintEvent *);
 123     virtual void                     mouseMoveEvent( QMouseEvent *);
 124     virtual void                     mouseReleaseEvent( QMouseEvent *);
 125     virtual void                     mousePressEvent( QMouseEvent *);
 126     virtual void                     mouseDoubleClickEvent( QMouseEvent *);
 127     virtual void                     keyPressEvent( QKeyEvent *);
 128     virtual void                     keyReleaseEvent( QKeyEvent *);
 129     virtual void                     wheelEvent( QWheelEvent *);
 130
 131 //! TO BE REDEFINED
 132     virtual void                     reset() = 0;
 133     virtual void                     pan( int, int ) = 0;
 134     virtual void                     setCenter( int, int ) = 0;
 135     virtual void                     zoom( int, int, int, int ) = 0;
 136     virtual void                     fitRect( const QRect& ) = 0;
 137     virtual void                     fitSelect() = 0;
 138     virtual void                     fitAll( bool keepScale = false, bool withZ = true ) = 0;
 139
 140 protected slots:
 141     virtual void                     onChangeBgColor();
 142
 143 signals:
 144     void                             vpKeyEvent( QKeyEvent* );
 145     void                             vpMouseEvent( QMouseEvent* );
 146     void                             vpWheelEvent( QWheelEvent* );
 147     void                             vpDrawExternal( QPainter* );
 148
 149     void                             contextMenuRequested( QContextMenuEvent* );
 150
 151 private:
 152     void                             initialize();
 153     void                             cleanup();
 154
 155 protected:
 156     //Handle(Aspect_Window)            myWindow;
 157     bool                             myEnableSketching;
 158     bool                             myEnableTransform;
 159     bool                             myPaintersRedrawing;   /* set to draw externally */
 160     //QList<QAction>                   myPopupActions;
 161
 162 private:
 163     static int                       nCounter;              /* objects counter */
 164     static QCursor*                  defCursor;
 165     static QCursor*                  panglCursor;
 166     static QCursor*                  handCursor;
 167     static QCursor*                  panCursor;
 168     static QCursor*                  zoomCursor;
 169     static QCursor*                  rotCursor;
 170     static QCursor*                  sketchCursor;
 171 };
 172
 173 #ifdef WNT
 174 #pragma warning ( default:4251 )
 175 #endif
 176
 177 #endif