utils/ogl/src/basic.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        basic.h
   3 // Purpose:     Basic OGL classes and definitions
   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 _OGL_BASIC_H_
  13 #define _OGL_BASIC_H_
  14
  15 #ifdef __GNUG__
  16 #pragma interface "basic.h"
  17 #endif
  18
  19 #define OGL_VERSION     2.0
  20
  21 #ifndef DEFAULT_MOUSE_TOLERANCE
  22 #define DEFAULT_MOUSE_TOLERANCE 3
  23 #endif
  24
  25 // Edit these lines if you positively don't want PROLOGIO support
  26 #ifndef PROLOGIO
  27 #define PROLOGIO
  28 #endif
  29
  30 // Key identifiers
  31 #define KEY_SHIFT 1
  32 #define KEY_CTRL  2
  33
  34 // Arrow styles
  35
  36 #define ARROW_NONE         0
  37 #define ARROW_END          1
  38 #define ARROW_BOTH         2
  39 #define ARROW_MIDDLE       3
  40 #define ARROW_START        4
  41
  42 // Control point types
  43 // Rectangle and most other shapes
  44 #define CONTROL_POINT_VERTICAL   1
  45 #define CONTROL_POINT_HORIZONTAL 2
  46 #define CONTROL_POINT_DIAGONAL   3
  47
  48 // Line
  49 #define CONTROL_POINT_ENDPOINT_TO 4
  50 #define CONTROL_POINT_ENDPOINT_FROM 5
  51 #define CONTROL_POINT_LINE       6
  52
  53 // Types of formatting: can be combined in a bit list
  54 #define FORMAT_NONE           0
  55                                 // Left justification
  56 #define FORMAT_CENTRE_HORIZ   1
  57                                 // Centre horizontally
  58 #define FORMAT_CENTRE_VERT    2
  59                                 // Centre vertically
  60 #define FORMAT_SIZE_TO_CONTENTS 4
  61                                 // Resize shape to contents
  62
  63 // Shadow mode
  64 #define SHADOW_NONE           0
  65 #define SHADOW_LEFT           1
  66 #define SHADOW_RIGHT          2
  67
  68 /*
  69  * Declare types
  70  *
  71  */
  72
  73 #define SHAPE_BASIC           wxTYPE_USER + 1
  74 #define SHAPE_RECTANGLE       wxTYPE_USER + 2
  75 #define SHAPE_ELLIPSE         wxTYPE_USER + 3
  76 #define SHAPE_POLYGON         wxTYPE_USER + 4
  77 #define SHAPE_CIRCLE          wxTYPE_USER + 5
  78 #define SHAPE_LINE            wxTYPE_USER + 6
  79 #define SHAPE_DIVIDED_RECTANGLE wxTYPE_USER + 8
  80 #define SHAPE_COMPOSITE       wxTYPE_USER + 9
  81 #define SHAPE_CONTROL_POINT   wxTYPE_USER + 10
  82 #define SHAPE_DRAWN           wxTYPE_USER + 11
  83 #define SHAPE_DIVISION        wxTYPE_USER + 12
  84 #define SHAPE_LABEL_OBJECT    wxTYPE_USER + 13
  85 #define SHAPE_BITMAP          wxTYPE_USER + 14
  86 #define SHAPE_DIVIDED_OBJECT_CONTROL_POINT   wxTYPE_USER + 15
  87
  88 #define OBJECT_REGION         wxTYPE_USER + 20
  89
  90 #define OP_CLICK_LEFT  1
  91 #define OP_CLICK_RIGHT 2
  92 #define OP_DRAG_LEFT 4
  93 #define OP_DRAG_RIGHT 8
  94
  95 #define OP_ALL (OP_CLICK_LEFT | OP_CLICK_RIGHT | OP_DRAG_LEFT | OP_DRAG_RIGHT)
  96
  97 class wxShapeTextLine;
  98 class wxShapeCanvas;
  99 class wxLineShape;
 100 class wxControlPoint;
 101 class wxShapeRegion;
 102 class wxShape;
 103
 104 #ifdef PROLOGIO
 105 class WXDLLEXPORT wxExpr;
 106 class WXDLLEXPORT wxExprDatabase;
 107 #endif
 108
 109 class wxShapeEvtHandler: public wxObject
 110 {
 111  DECLARE_DYNAMIC_CLASS(wxShapeEvtHandler)
 112
 113  public:
 114   wxShapeEvtHandler(wxShapeEvtHandler *prev = NULL, wxShape *shape = NULL);
 115   virtual ~wxShapeEvtHandler();
 116
 117   inline void SetShape(wxShape *sh) { m_handlerShape = sh; }
 118   inline wxShape *GetShape() const { return m_handlerShape; }
 119
 120   inline void SetPreviousHandler(wxShapeEvtHandler* handler) { m_previousHandler = handler; }
 121   inline wxShapeEvtHandler* GetPreviousHandler() const { return m_previousHandler; }
 122
 123   // This is called when the _shape_ is deleted.
 124   virtual void OnDelete();
 125   virtual void OnDraw(wxDC& dc);
 126   virtual void OnDrawContents(wxDC& dc);
 127   virtual void OnMoveLinks(wxDC& dc);
 128   virtual void OnErase(wxDC& dc);
 129   virtual void OnEraseContents(wxDC& dc);
 130   virtual void OnHighlight(wxDC& dc);
 131   virtual void OnLeftClick(float x, float y, int keys = 0, int attachment = 0);
 132   virtual void OnRightClick(float x, float y, int keys = 0, int attachment = 0);
 133   virtual void OnSize(float x, float y);
 134   virtual bool OnMovePre(wxDC& dc, float x, float y, float old_x, float old_y, bool display = TRUE);
 135   virtual void OnMovePost(wxDC& dc, float x, float y, float old_x, float old_y, bool display = TRUE);
 136
 137   virtual void OnDragLeft(bool draw, float x, float y, int keys=0, int attachment = 0); // Erase if draw false
 138   virtual void OnBeginDragLeft(float x, float y, int keys=0, int attachment = 0);
 139   virtual void OnEndDragLeft(float x, float y, int keys=0, int attachment = 0);
 140   virtual void OnDragRight(bool draw, float x, float y, int keys=0, int attachment = 0); // Erase if draw false
 141   virtual void OnBeginDragRight(float x, float y, int keys=0, int attachment = 0);
 142   virtual void OnEndDragRight(float x, float y, int keys=0, int attachment = 0);
 143   virtual void OnDrawOutline(wxDC& dc, float x, float y, float w, float h);
 144   virtual void OnDrawControlPoints(wxDC& dc);
 145   virtual void OnEraseControlPoints(wxDC& dc);
 146   virtual void OnMoveLink(wxDC& dc, bool moveControlPoints = TRUE);
 147
 148   // Control points ('handles') redirect control to the actual shape, to make it easier
 149   // to override sizing behaviour.
 150   virtual void OnSizingDragLeft(wxControlPoint* pt, bool draw, float x, float y, int keys=0, int attachment = 0); // Erase if draw false
 151   virtual void OnSizingBeginDragLeft(wxControlPoint* pt, float x, float y, int keys=0, int attachment = 0);
 152   virtual void OnSizingEndDragLeft(wxControlPoint* pt, float x, float y, int keys=0, int attachment = 0);
 153
 154   virtual void OnBeginSize(float WXUNUSED(w), float WXUNUSED(h)) { }
 155   virtual void OnEndSize(float WXUNUSED(w), float WXUNUSED(h)) { }
 156
 157   // Creates a copy of this event handler.
 158   wxShapeEvtHandler *CreateNewCopy();
 159
 160   // Does the copy - override for new event handlers which might store
 161   // app-specific data.
 162   virtual void CopyData(wxShapeEvtHandler& copy) {};
 163
 164  private:
 165   wxShapeEvtHandler*    m_previousHandler;
 166   wxShape*              m_handlerShape;
 167 };
 168
 169 class wxShape: public wxShapeEvtHandler
 170 {
 171  DECLARE_ABSTRACT_CLASS(wxShape)
 172
 173  public:
 174
 175   wxShape(wxShapeCanvas *can = NULL);
 176   virtual ~wxShape();
 177   virtual void GetBoundingBoxMax(float *width, float *height);
 178   virtual void GetBoundingBoxMin(float *width, float *height) = 0;
 179   virtual bool GetPerimeterPoint(float x1, float y1,
 180                                  float x2, float y2,
 181                                  float *x3, float *y3);
 182   inline wxShapeCanvas *GetCanvas() { return m_canvas; }
 183   void SetCanvas(wxShapeCanvas *the_canvas);
 184   virtual void AddToCanvas(wxShapeCanvas *the_canvas, wxShape *addAfter = NULL);
 185   virtual void InsertInCanvas(wxShapeCanvas *the_canvas);
 186
 187   virtual void RemoveFromCanvas(wxShapeCanvas *the_canvas);
 188   inline float GetX() const { return m_xpos; }
 189   inline float GetY() const { return m_ypos; }
 190   inline void SetX(float x) { m_xpos = x; }
 191   inline void SetY(float y) { m_ypos = y; }
 192
 193   inline wxShape *GetParent() const { return m_parent; }
 194   inline void SetParent(wxShape *p) { m_parent = p; }
 195   wxShape *GetTopAncestor();
 196   inline wxList& GetChildren() { return m_children; }
 197
 198   virtual void OnDraw(wxDC& dc);
 199   virtual void OnDrawContents(wxDC& dc);
 200   virtual void OnMoveLinks(wxDC& dc);
 201   virtual void Unlink() { };
 202   void SetDrawHandles(bool drawH);
 203   inline bool GetDrawHandles() { return m_drawHandles; }
 204   virtual void OnErase(wxDC& dc);
 205   virtual void OnEraseContents(wxDC& dc);
 206   virtual void OnHighlight(wxDC& dc);
 207   virtual void OnLeftClick(float x, float y, int keys = 0, int attachment = 0);
 208   virtual void OnRightClick(float x, float y, int keys = 0, int attachment = 0);
 209   virtual void OnSize(float x, float y);
 210   virtual bool OnMovePre(wxDC& dc, float x, float y, float old_x, float old_y, bool display = TRUE);
 211   virtual void OnMovePost(wxDC& dc, float x, float y, float old_x, float old_y, bool display = TRUE);
 212
 213   virtual void OnDragLeft(bool draw, float x, float y, int keys=0, int attachment = 0); // Erase if draw false
 214   virtual void OnBeginDragLeft(float x, float y, int keys=0, int attachment = 0);
 215   virtual void OnEndDragLeft(float x, float y, int keys=0, int attachment = 0);
 216   virtual void OnDragRight(bool draw, float x, float y, int keys=0, int attachment = 0); // Erase if draw false
 217   virtual void OnBeginDragRight(float x, float y, int keys=0, int attachment = 0);
 218   virtual void OnEndDragRight(float x, float y, int keys=0, int attachment = 0);
 219   virtual void OnDrawOutline(wxDC& dc, float x, float y, float w, float h);
 220   virtual void OnDrawControlPoints(wxDC& dc);
 221   virtual void OnEraseControlPoints(wxDC& dc);
 222
 223   virtual void OnBeginSize(float WXUNUSED(w), float WXUNUSED(h)) { }
 224   virtual void OnEndSize(float WXUNUSED(w), float WXUNUSED(h)) { }
 225
 226   // Control points ('handles') redirect control to the actual shape, to make it easier
 227   // to override sizing behaviour.
 228   virtual void OnSizingDragLeft(wxControlPoint* pt, bool draw, float x, float y, int keys=0, int attachment = 0); // Erase if draw false
 229   virtual void OnSizingBeginDragLeft(wxControlPoint* pt, float x, float y, int keys=0, int attachment = 0);
 230   virtual void OnSizingEndDragLeft(wxControlPoint* pt, float x, float y, int keys=0, int attachment = 0);
 231
 232   virtual void MakeControlPoints();
 233   virtual void DeleteControlPoints(wxDC *dc = NULL);
 234   virtual void ResetControlPoints();
 235
 236   inline wxShapeEvtHandler *GetEventHandler() { return m_eventHandler; }
 237   inline void SetEventHandler(wxShapeEvtHandler *handler) { m_eventHandler = handler; }
 238
 239   // Mandatory control points, e.g. the divided line moving handles
 240   // should appear even if a child of the 'selected' image
 241   virtual void MakeMandatoryControlPoints();
 242   virtual void ResetMandatoryControlPoints();
 243
 244   inline virtual bool Recompute() { return TRUE; };
 245   // Calculate size recursively, if size changes. Size might depend on children.
 246   inline virtual void CalculateSize() { };
 247   virtual void Select(bool select = TRUE, wxDC* dc = NULL);
 248   virtual void SetHighlight(bool hi = TRUE, bool recurse = FALSE);
 249   inline virtual bool IsHighlighted() const { return m_highlighted; };
 250   virtual bool Selected() const;
 251   virtual bool AncestorSelected() const;
 252   void SetSensitivityFilter(int sens = OP_ALL, bool recursive = FALSE);
 253   int GetSensitivityFilter() const { return m_sensitivity; }
 254   void SetDraggable(bool drag, bool recursive = FALSE);
 255   inline  void SetFixedSize(bool x, bool y) { m_fixedWidth = x; m_fixedHeight = y; };
 256   inline  void GetFixedSize(bool *x, bool *y) const { *x = m_fixedWidth; *y = m_fixedHeight; };
 257   inline  bool GetFixedWidth() const { return m_fixedWidth; }
 258   inline  bool GetFixedHeight() const { return m_fixedHeight; }
 259   inline  void SetSpaceAttachments(bool sp) { m_spaceAttachments = sp; };
 260   inline  bool GetSpaceAttachments() const { return m_spaceAttachments; };
 261   void SetShadowMode(int mode, bool redraw = FALSE);
 262   inline int GetShadowMode() const { return m_shadowMode; }
 263   virtual bool HitTest(float x, float y, int *attachment, float *distance);
 264   inline void SetCentreResize(bool cr) { m_centreResize = cr; }
 265   inline bool GetCentreResize() const { return m_centreResize; }
 266   inline wxList& GetLines() { return m_lines; }
 267   inline void SetDisableLabel(bool flag) { m_disableLabel = flag; }
 268   inline bool GetDisableLabel() const { return m_disableLabel; }
 269   inline void SetAttachmentMode(bool flag) { m_attachmentMode = flag; }
 270   inline bool GetAttachmentMode() const { return m_attachmentMode; }
 271   inline void SetId(long i) { m_id = i; }
 272   inline long GetId() const { return m_id; }
 273
 274   void SetPen(wxPen *pen);
 275   void SetBrush(wxBrush *brush);
 276   inline void SetClientData(wxObject *client_data) { m_clientData = client_data; };
 277   inline wxObject *GetClientData() const { return m_clientData; };
 278
 279   virtual void Show(bool show);
 280   virtual bool IsShown() const { return m_visible; }
 281   virtual void Move(wxDC& dc, float x1, float y1, bool display = TRUE);
 282   virtual void Erase(wxDC& dc);
 283   virtual void EraseContents(wxDC& dc);
 284   virtual void Draw(wxDC& dc);
 285   virtual void Flash();
 286   virtual void MoveLinks(wxDC& dc);
 287   virtual void DrawContents(wxDC& dc);  // E.g. for drawing text label
 288   virtual void SetSize(float x, float y, bool recursive = TRUE);
 289   virtual void SetAttachmentSize(float x, float y);
 290   void Attach(wxShapeCanvas *can);
 291   void Detach();
 292
 293   inline virtual bool Constrain() { return FALSE; } ;
 294
 295   void AddLine(wxLineShape *line, wxShape *other,
 296                int attachFrom = 0, int attachTo = 0);
 297   void AddText(const wxString& string);
 298
 299   inline wxPen *GetPen() const { return m_pen; }
 300   inline wxBrush *GetBrush() const { return m_brush; }
 301
 302   /*
 303    * Region-specific functions (defaults to the default region
 304    * for simple objects
 305    */
 306
 307   // Set the default, single region size to be consistent
 308   // with the object size
 309   void SetDefaultRegionSize();
 310   virtual void FormatText(wxDC& dc, const wxString& s, int regionId = 0);
 311   virtual void SetFormatMode(int mode, int regionId = 0);
 312   virtual int GetFormatMode(int regionId = 0) const;
 313   virtual void SetFont(wxFont *font, int regionId = 0);
 314   virtual wxFont *GetFont(int regionId = 0) const;
 315   virtual void SetTextColour(const wxString& colour, int regionId = 0);
 316   virtual wxString GetTextColour(int regionId = 0) const;
 317   virtual inline int GetNumberOfTextRegions() const { return m_regions.Number(); }
 318   virtual void SetRegionName(const wxString& name, int regionId = 0);
 319
 320   // Get the name representing the region for this image alone.
 321   // I.e. this image's region ids go from 0 to N-1.
 322   // But the names might be "0.2.0", "0.2.1" etc. depending on position in composite.
 323   // So the last digit represents the region Id, the others represent positions
 324   // in composites.
 325   virtual wxString GetRegionName(int regionId);
 326
 327   // Gets the region corresponding to the name, or -1 if not found.
 328   virtual int GetRegionId(const wxString& name);
 329
 330   // Construct names for regions, unique even for children of a composite.
 331   virtual void NameRegions(const wxString& parentName = "");
 332
 333   // Get list of regions
 334   inline wxList& GetRegions() const { return (wxList&) m_regions; }
 335
 336   virtual void AddRegion(wxShapeRegion *region);
 337
 338   virtual void ClearRegions();
 339
 340   // Assign new ids to this image and children (if composite)
 341   void AssignNewIds();
 342
 343   // Returns actual image (same as 'this' if non-composite) and region id
 344   // for given region name.
 345   virtual wxShape *FindRegion(const wxString& regionName, int *regionId);
 346
 347   // Finds all region names for this image (composite or simple).
 348   // Supply empty string list.
 349   virtual void FindRegionNames(wxStringList& list);
 350
 351   virtual void ClearText(int regionId = 0);
 352   void RemoveLine(wxLineShape *line);
 353
 354 #ifdef PROLOGIO
 355   // Prolog database stuff
 356   virtual char *GetFunctor();
 357   virtual void WritePrologAttributes(wxExpr *clause);
 358   virtual void ReadPrologAttributes(wxExpr *clause);
 359
 360   // In case the object has constraints it needs to read in in a different pass
 361   inline virtual void ReadConstraints(wxExpr *WXUNUSED(clause), wxExprDatabase *WXUNUSED(database)) { };
 362   virtual void WriteRegions(wxExpr *clause);
 363   virtual void ReadRegions(wxExpr *clause);
 364 #endif
 365
 366   // Attachment code
 367   virtual bool GetAttachmentPosition(int attachment, float *x, float *y,
 368                                      int nth = 0, int no_arcs = 1, wxLineShape *line = NULL);
 369   virtual int GetNumberOfAttachments();
 370   virtual bool AttachmentIsValid(int attachment);
 371
 372   virtual void EraseLinks(wxDC& dc, int attachment = -1, bool recurse = FALSE);
 373   virtual void DrawLinks(wxDC& dc, int attachment = -1, bool recurse = FALSE);
 374
 375   virtual void MoveLineToNewAttachment(wxDC& dc, wxLineShape *to_move,
 376                                        float x, float y);
 377
 378   // Reorders the lines coming into the node image at this attachment
 379   // position, in the order in which they appear in linesToSort.
 380   virtual void SortLines(int attachment, wxList& linesToSort);
 381
 382   // This is really to distinguish between lines and other images.
 383   // For lines, want to pass drag to canvas, since lines tend to prevent
 384   // dragging on a canvas (they get in the way.)
 385   virtual bool Draggable() const { return TRUE; }
 386
 387   // Returns TRUE if image is a descendant of this image
 388   bool HasDescendant(wxShape *image);
 389
 390   // Creates a copy of this shape.
 391   wxShape *CreateNewCopy(bool resetMapping = TRUE, bool recompute = TRUE);
 392
 393   // Does the copying for this object
 394   virtual void Copy(wxShape& copy);
 395
 396   // Does the copying for this object, including copying event
 397   // handler data if any. Calls the virtual Copy function.
 398   void CopyWithHandler(wxShape& copy);
 399
 400   // Rotate about the given axis by the given amount in radians
 401   // (does nothing for most objects)
 402   // But even non-rotating objects should record their notional
 403   // rotation in case it's important (e.g. in dog-leg code).
 404   virtual inline void Rotate(float WXUNUSED(x), float WXUNUSED(y), float theta) { m_rotation = theta; }
 405   virtual inline float GetRotation() const { return m_rotation; }
 406
 407   void ClearAttachments();
 408
 409   // Recentres all the text regions for this object
 410   void Recentre(wxDC& dc);
 411
 412   // Clears points from a list of wxRealPoints
 413   void ClearPointList(wxList& list);
 414
 415  private:
 416   wxObject*             m_clientData;
 417
 418  protected:
 419   wxShapeEvtHandler*    m_eventHandler;
 420   bool                  m_formatted;
 421   float                 m_xpos, m_ypos;
 422   wxPen*                m_pen;
 423   wxBrush*              m_brush;
 424   wxFont*               m_font;
 425   wxColour*             m_textColour;
 426   wxString              m_textColourName;
 427   wxShapeCanvas*        m_canvas;
 428   wxList                m_lines;
 429   wxList                m_text;
 430   wxList                m_controlPoints;
 431   wxList                m_regions;
 432   wxList                m_attachmentPoints;
 433   bool                  m_visible;
 434   bool                  m_disableLabel;
 435   long                  m_id;
 436   bool                  m_selected;
 437   bool                  m_highlighted;      // Different from selected: user-defined highlighting,
 438                                             // e.g. thick border.
 439   float                 m_rotation;
 440   int                   m_sensitivity;
 441   bool                  m_draggable;
 442   bool                  m_attachmentMode;   // TRUE if using attachments, FALSE otherwise
 443   bool                  m_spaceAttachments; // TRUE if lines at one side should be spaced
 444   bool                  m_fixedWidth;
 445   bool                  m_fixedHeight;
 446   bool                  m_centreResize;    // Default is to resize keeping the centre constant (TRUE)
 447   bool                  m_drawHandles;     // Don't draw handles if FALSE, usually TRUE
 448   wxList                m_children;      // In case it's composite
 449   wxShape*              m_parent;      // In case it's a child
 450   int                   m_formatMode;
 451   int                   m_shadowMode;
 452   wxBrush*              m_shadowBrush;
 453   int                   m_shadowOffsetX;
 454   int                   m_shadowOffsetY;
 455   int                   m_textMarginX;    // Gap between text and border
 456   int                   m_textMarginY;
 457   wxString              m_regionName;
 458 };
 459
 460 class wxPolygonShape: public wxShape
 461 {
 462  DECLARE_DYNAMIC_CLASS(wxPolygonShape)
 463  public:
 464   wxPolygonShape();
 465   ~wxPolygonShape();
 466
 467   // Takes a list of wxRealPoints; each point is an OFFSET from the centre.
 468   // Deletes user's points in destructor.
 469   virtual void Create(wxList *points);
 470
 471   void GetBoundingBoxMin(float *w, float *h);
 472   void CalculateBoundingBox();
 473   bool GetPerimeterPoint(float x1, float y1,
 474                                  float x2, float y2,
 475                                  float *x3, float *y3);
 476   bool HitTest(float x, float y, int *attachment, float *distance);
 477   void SetSize(float x, float y, bool recursive = TRUE);
 478   void OnDraw(wxDC& dc);
 479   void OnDrawOutline(wxDC& dc, float x, float y, float w, float h);
 480
 481   // Control points ('handles') redirect control to the actual shape, to make it easier
 482   // to override sizing behaviour.
 483   virtual void OnSizingDragLeft(wxControlPoint* pt, bool draw, float x, float y, int keys=0, int attachment = 0);
 484   virtual void OnSizingBeginDragLeft(wxControlPoint* pt, float x, float y, int keys=0, int attachment = 0);
 485   virtual void OnSizingEndDragLeft(wxControlPoint* pt, float x, float y, int keys=0, int attachment = 0);
 486
 487   // A polygon should have a control point at each vertex,
 488   // with the option of moving the control points individually
 489   // to change the shape.
 490   void MakeControlPoints();
 491   void ResetControlPoints();
 492
 493   // If we've changed the shape, must make the original
 494   // points match the working points
 495   void UpdateOriginalPoints();
 496
 497   // Add a control point after the given point
 498   virtual void AddPolygonPoint(int pos = 0);
 499
 500   // Delete a control point
 501   virtual void DeletePolygonPoint(int pos = 0);
 502
 503   // Recalculates the centre of the polygon
 504   virtual void CalculatePolygonCentre();
 505
 506 #ifdef PROLOGIO
 507   // Prolog database stuff
 508   void WritePrologAttributes(wxExpr *clause);
 509   void ReadPrologAttributes(wxExpr *clause);
 510 #endif
 511
 512   int GetNumberOfAttachments();
 513   bool GetAttachmentPosition(int attachment, float *x, float *y,
 514                                      int nth = 0, int no_arcs = 1, wxLineShape *line = NULL);
 515   bool AttachmentIsValid(int attachment);
 516   // Does the copying for this object
 517   void Copy(wxShape& copy);
 518
 519   inline wxList *GetPoints() { return m_points; }
 520
 521  private:
 522   wxList*       m_points;
 523   wxList*       m_originalPoints;
 524   float         m_boundWidth;
 525   float         m_boundHeight;
 526   float         m_originalWidth;
 527   float         m_originalHeight;
 528 };
 529
 530 class wxRectangleShape: public wxShape
 531 {
 532  DECLARE_DYNAMIC_CLASS(wxRectangleShape)
 533  public:
 534   wxRectangleShape(float w = 0.0, float h = 0.0);
 535   void GetBoundingBoxMin(float *w, float *h);
 536   bool GetPerimeterPoint(float x1, float y1,
 537                                  float x2, float y2,
 538                                  float *x3, float *y3);
 539   void OnDraw(wxDC& dc);
 540   void SetSize(float x, float y, bool recursive = TRUE);
 541   void SetCornerRadius(float rad); // If > 0, rounded corners
 542
 543 #ifdef PROLOGIO
 544   // Prolog database stuff
 545   void WritePrologAttributes(wxExpr *clause);
 546   void ReadPrologAttributes(wxExpr *clause);
 547 #endif
 548
 549   int GetNumberOfAttachments();
 550   bool GetAttachmentPosition(int attachment, float *x, float *y,
 551                                      int nth = 0, int no_arcs = 1, wxLineShape *line = NULL);
 552   // Does the copying for this object
 553   void Copy(wxShape& copy);
 554
 555   inline float GetWidth() const { return m_width; }
 556   inline float GetHeight() const { return m_height; }
 557
 558 protected:
 559   float m_width;
 560   float m_height;
 561   float m_cornerRadius;
 562 };
 563
 564 class wxTextShape: public wxRectangleShape
 565 {
 566  DECLARE_DYNAMIC_CLASS(wxTextShape)
 567  public:
 568   wxTextShape(float width = 0.0, float height = 0.0);
 569
 570   void OnDraw(wxDC& dc);
 571
 572 #ifdef PROLOGIO
 573   void WritePrologAttributes(wxExpr *clause);
 574 #endif
 575
 576   // Does the copying for this object
 577   void Copy(wxShape& copy);
 578 };
 579
 580 class wxEllipseShape: public wxShape
 581 {
 582  DECLARE_DYNAMIC_CLASS(wxEllipseShape)
 583  public:
 584   wxEllipseShape(float w = 0.0, float h = 0.0);
 585
 586   void GetBoundingBoxMin(float *w, float *h);
 587   bool GetPerimeterPoint(float x1, float y1,
 588                                  float x2, float y2,
 589                                  float *x3, float *y3);
 590
 591   void OnDraw(wxDC& dc);
 592   void SetSize(float x, float y, bool recursive = TRUE);
 593
 594 #ifdef PROLOGIO
 595   // Prolog database stuff
 596   void WritePrologAttributes(wxExpr *clause);
 597   void ReadPrologAttributes(wxExpr *clause);
 598 #endif
 599
 600   int GetNumberOfAttachments();
 601   bool GetAttachmentPosition(int attachment, float *x, float *y,
 602                                      int nth = 0, int no_arcs = 1, wxLineShape *line = NULL);
 603
 604   // Does the copying for this object
 605   void Copy(wxShape& copy);
 606
 607   inline float GetWidth() const { return m_width; }
 608   inline float GetHeight() const { return m_height; }
 609
 610 protected:
 611   float m_width;
 612   float m_height;
 613 };
 614
 615 class wxCircleShape: public wxEllipseShape
 616 {
 617  DECLARE_DYNAMIC_CLASS(wxCircleShape)
 618  public:
 619   wxCircleShape(float w = 0.0);
 620
 621   bool GetPerimeterPoint(float x1, float y1,
 622                                  float x2, float y2,
 623                                  float *x3, float *y3);
 624   // Does the copying for this object
 625   void Copy(wxShape& copy);
 626 };
 627
 628 #endif
 629  // _OGL_BASIC_H_