contrib/samples/ogl/ogledit/doc.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        doc.h
   3 // Purpose:     Document classes
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     12/07/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _OGLSAMPLE_DOC_H_
  13 #define _OGLSAMPLE_DOC_H_
  14
  15 #ifdef __GNUG__
  16 // #pragma interface
  17 #endif
  18
  19 #include <wx/docview.h>
  20 #include <wx/string.h>
  21 #include <wx/wxexpr.h>
  22
  23 #include <wx/ogl/ogl.h>
  24
  25 #if wxUSE_STD_IOSTREAM
  26  #include <iosfwd>
  27 #endif
  28
  29 /*
  30  * Override a few members for this application
  31  */
  32
  33 class MyDiagram: public wxDiagram
  34 {
  35  public:
  36   MyDiagram(void) {}
  37   bool OnShapeSave(wxExprDatabase& db, wxShape& shape, wxExpr& expr);
  38   bool OnShapeLoad(wxExprDatabase& db, wxShape& shape, wxExpr& expr);
  39 };
  40
  41 /*
  42  * A few new shape classes so we have a 1:1 mapping
  43  * between palette symbol and unique class
  44  */
  45
  46 class wxRoundedRectangleShape: public wxRectangleShape
  47 {
  48   DECLARE_DYNAMIC_CLASS(wxRoundedRectangleShape)
  49  private:
  50  public:
  51   wxRoundedRectangleShape(double w = 0.0, double h = 0.0);
  52 };
  53
  54 class wxDiamondShape: public wxPolygonShape
  55 {
  56   DECLARE_DYNAMIC_CLASS(wxDiamondShape)
  57  private:
  58  public:
  59   wxDiamondShape(double w = 0.0, double h = 0.0);
  60 };
  61
  62 /*
  63  * All shape event behaviour is routed through this handler, so we don't
  64  * have to derive from each shape class. We plug this in to each shape.
  65  */
  66
  67 class MyEvtHandler: public wxShapeEvtHandler
  68 {
  69  public:
  70   wxString label;
  71   MyEvtHandler(wxShapeEvtHandler *prev = NULL, wxShape *shape = NULL, const wxString& lab = ""):wxShapeEvtHandler(prev, shape)
  72   {
  73     label = lab;
  74   }
  75   ~MyEvtHandler(void)
  76   {
  77   }
  78   void OnLeftClick(double x, double y, int keys = 0, int attachment = 0);
  79   void OnBeginDragRight(double x, double y, int keys = 0, int attachment = 0);
  80   void OnDragRight(bool draw, double x, double y, int keys = 0, int attachment = 0);
  81   void OnEndDragRight(double x, double y, int keys = 0, int attachment = 0);
  82   void OnEndSize(double x, double y);
  83 };
  84
  85 /*
  86  * A diagram document, which contains a diagram.
  87  */
  88
  89 class DiagramDocument: public wxDocument
  90 {
  91   DECLARE_DYNAMIC_CLASS(DiagramDocument)
  92  private:
  93  public:
  94   MyDiagram diagram;
  95
  96   DiagramDocument(void);
  97   ~DiagramDocument(void);
  98
  99 #if wxUSE_STD_IOSTREAM
 100     virtual wxSTD ostream& SaveObject(wxSTD ostream& stream);
 101     virtual wxSTD istream& LoadObject(wxSTD istream& stream);
 102 #else
 103     virtual wxOutputStream& SaveObject(wxOutputStream& stream);
 104     virtual wxInputStream& LoadObject(wxInputStream& stream);
 105 #endif
 106
 107   inline wxDiagram *GetDiagram() { return &diagram; }
 108
 109   bool OnCloseDocument(void);
 110 };
 111
 112 /*
 113  * Most user interface commands are routed through this, to give us the
 114  * Undo/Redo mechanism. If you add more commands, such as changing the shape colour,
 115  * you will need to add members to 'remember' what the user applied (for 'Do') and what the
 116  * previous state was (for 'Undo').
 117  * You can have one member for each property to be changed. Assume we also have
 118  * a pointer member wxShape *shape, which is set to the shape being changed.
 119  * Let's assume we're changing the shape colour. Our member for this is shapeColour.
 120  *
 121  * - In 'Do':
 122  *   o Set a temporary variable 'temp' to the current colour for 'shape'.
 123  *   o Change the colour to the new colour.
 124  *   o Set shapeColour to the _old_ colour, 'temp'.
 125  * - In 'Undo':
 126  *   o Set a temporary variable 'temp' to the current colour for 'shape'.
 127  *   o Change the colour to shapeColour (the old colour).
 128  *   o Set shapeColour to 'temp'.
 129  *
 130  * So, as long as we have a pointer to the shape being changed,
 131  * we only need one member variable for each property.
 132  *
 133  * PROBLEM: when an Add shape command is redone, the 'shape' pointer changes.
 134  * Assume, as here, that we keep a pointer to the old shape so we reuse it
 135  * when we recreate.
 136  */
 137
 138 class DiagramCommand: public wxCommand
 139 {
 140  protected:
 141   DiagramDocument *doc;
 142   int cmd;
 143   wxShape *shape; // Pointer to the shape we're acting on
 144   wxShape *fromShape;
 145   wxShape *toShape;
 146   wxClassInfo *shapeInfo;
 147   double x;
 148   double y;
 149   bool selected;
 150   bool deleteShape;
 151
 152   // Storage for property commands
 153   wxBrush *shapeBrush;
 154   wxPen *shapePen;
 155   wxString shapeLabel;
 156  public:
 157   // Multi-purpose constructor for creating, deleting shapes
 158   DiagramCommand(char *name, int cmd, DiagramDocument *ddoc, wxClassInfo *shapeInfo = NULL,
 159      double x = 0.0, double y = 0.0, bool sel = FALSE, wxShape *theShape = NULL, wxShape *fs = NULL, wxShape *ts = NULL);
 160
 161   // Property-changing command constructors
 162   DiagramCommand(char *name, int cmd, DiagramDocument *ddoc, wxBrush *backgroundColour, wxShape *theShape);
 163   DiagramCommand(char *name, int cmd, DiagramDocument *ddoc, const wxString& lab, wxShape *theShape);
 164
 165   ~DiagramCommand(void);
 166
 167   bool Do(void);
 168   bool Undo(void);
 169
 170   inline void SetShape(wxShape *s) { shape = s; }
 171   inline wxShape *GetShape(void) { return shape; }
 172   inline wxShape *GetFromShape(void) { return fromShape; }
 173   inline wxShape *GetToShape(void) { return toShape; }
 174   inline wxClassInfo *GetShapeInfo(void) { return shapeInfo; }
 175   inline bool GetSelected(void) { return selected; }
 176
 177   void RemoveLines(wxShape *shape);
 178 };
 179
 180 #endif
 181   // _OGLSAMPLE_DOC_H_