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