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.opencascade.org/SALOME/ or email : webmaster.salome@opencascade.org
  18 //
  19 //  Author : OPEN CASCADE
  20 //
  21
  22 // File:      GLViewer_ViewPort.h
  23 // Created:   November, 2004
  24
  25 /***************************************************************************
  26 **  Class:   GLViewer_ViewPort
  27 **  Descr:   Visualisation canvas of GLViewer
  28 **  Created: UI team, 05.09.04
  29 ****************************************************************************/
  30 #ifndef GLVIEWER_VIEWPORT_H
  31 #define GLVIEWER_VIEWPORT_H
  32
  33 #include "GLViewer.h"
  34
  35 #include <qlist.h>
  36 #include <qcolor.h>
  37 #include <qaction.h>
  38 #include <qwidget.h>
  39
  40 #include <Aspect_Window.hxx>
  41
  42 class QRect;
  43 class QCursor;
  44 class QPainter;
  45 class GLViewer_ViewSketcher;
  46 class GLViewer_ViewTransformer;
  47
  48 #ifdef WNT
  49 #pragma warning( disable:4251 )
  50 #endif
  51
  52 enum BlockStatus
  53 {
  54     BS_NoBlock          = 0x0000,
  55     BS_Highlighting     = 0x0001,
  56     BS_Selection        = 0x0002,
  57     BS_Dragging         = 0x0004
  58 };
  59
  60 /*!
  61  * Class GLViewer_ViewPort
  62  * Visualisation canvas of GLViewer
  63  */
  64 class GLVIEWER_API GLViewer_ViewPort: public QWidget
  65 {
  66     Q_OBJECT
  67     friend class GLViewer_ViewSketcher;
  68     friend class GLViewer_ViewTransformer;
  69
  70 public:
  71     GLViewer_ViewPort( QWidget* parent );
  72     ~GLViewer_ViewPort();
  73
  74 public:
  75     //! Activates/deactivates sketching
  76     void                             setSketchingEnabled( bool );
  77     //! Checks active status of sketcher
  78     bool                             isSketchingEnabled() const;
  79     //! Activates/deactivates transformer
  80     void                             setTransformEnabled( bool );
  81     //! Checks active status of transformer
  82     bool                             isTransformEnabled() const;
  83
  84     //! Returns background color
  85     virtual QColor                   backgroundColor() const;
  86     //! Sets background color
  87     virtual void                     setBackgroundColor( const QColor& );
  88
  89     //! Redraw external pa inters
  90     void                             redrawPainters();
  91
  92     //! Updates view
  93     virtual void                     onUpdate();
  94
  95     //! Returns blocking status for current started operations
  96     virtual BlockStatus              currentBlock(){ return BS_NoBlock; }
  97
  98 protected:
  99     enum ViewType { Type2D, Type3D };
 100     void                             selectVisualId( ViewType );
 101
 102     virtual QPaintDevice*            getPaintDevice() { return this; }
 103     virtual void                     contextMenuEvent( QContextMenuEvent * e );
 104
 105 //! STATICS
 106     static void                      createCursors();
 107     static void                      destroyCursors();
 108     static QCursor*                  getHandCursor() { return handCursor; }
 109     static void                      setHandCursor( const QCursor& newCursor );
 110     static QCursor*                  getPanCursor() { return panCursor; }
 111     static void                      setPanCursor( const QCursor& newCursor );
 112     static QCursor*                  getPanglCursor() { return panglCursor; }
 113     static void                      setPanglCursor( const QCursor& newCursor );
 114     static QCursor*                  getZoomCursor() { return zoomCursor; }
 115     static void                      setZoomCursor( const QCursor& newCursor );
 116
 117 public://ouv
 118     static QCursor*                  getDefaultCursor() { return defCursor; }
 119     static void                      setDefaultCursor( const QCursor& newCursor );
 120     static QCursor*                  getRotCursor() { return rotCursor; }
 121     static void                      setRotCursor( const QCursor& newCursor );
 122     static QCursor*                  getSketchCursor() { return sketchCursor; }
 123     static void                      setSketchCursor( const QCursor& newCursor );
 124
 125 protected:
 126 //! EVENTS
 127     virtual void                     paintEvent( QPaintEvent *);
 128     virtual void                     mouseMoveEvent( QMouseEvent *);
 129     virtual void                     mouseReleaseEvent( QMouseEvent *);
 130     virtual void                     mousePressEvent( QMouseEvent *);
 131     virtual void                     mouseDoubleClickEvent( QMouseEvent *);
 132     virtual void                     keyPressEvent( QKeyEvent *);
 133     virtual void                     keyReleaseEvent( QKeyEvent *);
 134     virtual void                     wheelEvent( QWheelEvent *);
 135
 136 //! TO BE REDEFINED
 137     virtual void                     reset() = 0;
 138     virtual void                     pan( int, int ) = 0;
 139     virtual void                     setCenter( int, int ) = 0;
 140     virtual void                     zoom( int, int, int, int ) = 0;
 141     virtual void                     fitRect( const QRect& ) = 0;
 142     virtual void                     fitSelect() = 0;
 143     virtual void                     fitAll( bool keepScale = false, bool withZ = true ) = 0;
 144
 145 protected slots:
 146     virtual void                     onChangeBgColor();
 147
 148 signals:
 149     void                             vpKeyEvent( QKeyEvent* );
 150     void                             vpMouseEvent( QMouseEvent* );
 151     void                             vpWheelEvent( QWheelEvent* );
 152     void                             vpDrawExternal( QPainter* );
 153
 154     void                             contextMenuRequested( QContextMenuEvent* );
 155
 156 private:
 157     void                             initialize();
 158     void                             cleanup();
 159
 160 protected:
 161     //Handle(Aspect_Window)            myWindow;
 162     bool                             myEnableSketching;
 163     bool                             myEnableTransform;
 164     bool                             myPaintersRedrawing;   /* set to draw externally */
 165     //QList<QAction>                   myPopupActions;
 166
 167 private:
 168     static int                       nCounter;              /* objects counter */
 169     static QCursor*                  defCursor;
 170     static QCursor*                  panglCursor;
 171     static QCursor*                  handCursor;
 172     static QCursor*                  panCursor;
 173     static QCursor*                  zoomCursor;
 174     static QCursor*                  rotCursor;
 175     static QCursor*                  sketchCursor;
 176 };
 177
 178 #ifdef WNT
 179 #pragma warning ( default:4251 )
 180 #endif
 181
 182 #endif