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 // Round up
 110 #define WXROUND(x) ( (long) (x + 0.5) )
 111
 112 class wxShapeEvtHandler: public wxObject
 113 {
 114  DECLARE_DYNAMIC_CLASS(wxShapeEvtHandler)
 115
 116  public:
 117   wxShapeEvtHandler(wxShapeEvtHandler *prev = NULL, wxShape *shape = NULL);
 118   virtual ~wxShapeEvtHandler();
 119
 120   inline void SetShape(wxShape *sh) { m_handlerShape = sh; }
 121   inline wxShape *GetShape() const { return m_handlerShape; }
 122
 123   inline void SetPreviousHandler(wxShapeEvtHandler* handler) { m_previousHandler = handler; }
 124   inline wxShapeEvtHandler* GetPreviousHandler() const { return m_previousHandler; }
 125
 126   // This is called when the _shape_ is deleted.
 127   virtual void OnDelete();
 128   virtual void OnDraw(wxDC& dc);
 129   virtual void OnDrawContents(wxDC& dc);
 130   virtual void OnMoveLinks(wxDC& dc);
 131   virtual void OnErase(wxDC& dc);
 132   virtual void OnEraseContents(wxDC& dc);
 133   virtual void OnHighlight(wxDC& dc);
 134   virtual void OnLeftClick(double x, double y, int keys = 0, int attachment = 0);
 135   virtual void OnRightClick(double x, double y, int keys = 0, int attachment = 0);
 136   virtual void OnSize(double x, double y);
 137   virtual bool OnMovePre(wxDC& dc, double x, double y, double old_x, double old_y, bool display = TRUE);
 138   virtual void OnMovePost(wxDC& dc, double x, double y, double old_x, double old_y, bool display = TRUE);
 139
 140   virtual void OnDragLeft(bool draw, double x, double y, int keys=0, int attachment = 0); // Erase if draw false
 141   virtual void OnBeginDragLeft(double x, double y, int keys=0, int attachment = 0);
 142   virtual void OnEndDragLeft(double x, double y, int keys=0, int attachment = 0);
 143   virtual void OnDragRight(bool draw, double x, double y, int keys=0, int attachment = 0); // Erase if draw false
 144   virtual void OnBeginDragRight(double x, double y, int keys=0, int attachment = 0);
 145   virtual void OnEndDragRight(double x, double y, int keys=0, int attachment = 0);
 146   virtual void OnDrawOutline(wxDC& dc, double x, double y, double w, double h);
 147   virtual void OnDrawControlPoints(wxDC& dc);
 148   virtual void OnEraseControlPoints(wxDC& dc);
 149   virtual void OnMoveLink(wxDC& dc, bool moveControlPoints = TRUE);
 150
 151   // Control points ('handles') redirect control to the actual shape, to make it easier
 152   // to override sizing behaviour.
 153   virtual void OnSizingDragLeft(wxControlPoint* pt, bool draw, double x, double y, int keys=0, int attachment = 0); // Erase if draw false
 154   virtual void OnSizingBeginDragLeft(wxControlPoint* pt, double x, double y, int keys=0, int attachment = 0);
 155   virtual void OnSizingEndDragLeft(wxControlPoint* pt, double x, double y, int keys=0, int attachment = 0);
 156
 157   virtual void OnBeginSize(double WXUNUSED(w), double WXUNUSED(h)) { }
 158   virtual void OnEndSize(double WXUNUSED(w), double WXUNUSED(h)) { }
 159
 160   // Can override this to prevent or intercept line reordering.
 161   virtual void OnChangeAttachment(int attachment, wxLineShape* line, wxList& ordering);
 162
 163   // Creates a copy of this event handler.
 164   wxShapeEvtHandler *CreateNewCopy();
 165
 166   // Does the copy - override for new event handlers which might store
 167   // app-specific data.
 168   virtual void CopyData(wxShapeEvtHandler& copy) {};
 169
 170  private:
 171   wxShapeEvtHandler*    m_previousHandler;
 172   wxShape*              m_handlerShape;
 173 };
 174
 175 class wxShape: public wxShapeEvtHandler
 176 {
 177  DECLARE_ABSTRACT_CLASS(wxShape)
 178
 179  public:
 180
 181   wxShape(wxShapeCanvas *can = NULL);
 182   virtual ~wxShape();
 183   virtual void GetBoundingBoxMax(double *width, double *height);
 184   virtual void GetBoundingBoxMin(double *width, double *height) = 0;
 185   virtual bool GetPerimeterPoint(double x1, double y1,
 186                                  double x2, double y2,
 187                                  double *x3, double *y3);
 188   inline wxShapeCanvas *GetCanvas() { return m_canvas; }
 189   void SetCanvas(wxShapeCanvas *the_canvas);
 190   virtual void AddToCanvas(wxShapeCanvas *the_canvas, wxShape *addAfter = NULL);
 191   virtual void InsertInCanvas(wxShapeCanvas *the_canvas);
 192
 193   virtual void RemoveFromCanvas(wxShapeCanvas *the_canvas);
 194   inline double GetX() const { return m_xpos; }
 195   inline double GetY() const { return m_ypos; }
 196   inline void SetX(double x) { m_xpos = x; }
 197   inline void SetY(double y) { m_ypos = y; }
 198
 199   inline wxShape *GetParent() const { return m_parent; }
 200   inline void SetParent(wxShape *p) { m_parent = p; }
 201   wxShape *GetTopAncestor();
 202   inline wxList& GetChildren() { return m_children; }
 203
 204   virtual void OnDraw(wxDC& dc);
 205   virtual void OnDrawContents(wxDC& dc);
 206   virtual void OnMoveLinks(wxDC& dc);
 207   virtual void Unlink() { };
 208   void SetDrawHandles(bool drawH);
 209   inline bool GetDrawHandles() { return m_drawHandles; }
 210   virtual void OnErase(wxDC& dc);
 211   virtual void OnEraseContents(wxDC& dc);
 212   virtual void OnHighlight(wxDC& dc);
 213   virtual void OnLeftClick(double x, double y, int keys = 0, int attachment = 0);
 214   virtual void OnRightClick(double x, double y, int keys = 0, int attachment = 0);
 215   virtual void OnSize(double x, double y);
 216   virtual bool OnMovePre(wxDC& dc, double x, double y, double old_x, double old_y, bool display = TRUE);
 217   virtual void OnMovePost(wxDC& dc, double x, double y, double old_x, double old_y, bool display = TRUE);
 218
 219   virtual void OnDragLeft(bool draw, double x, double y, int keys=0, int attachment = 0); // Erase if draw false
 220   virtual void OnBeginDragLeft(double x, double y, int keys=0, int attachment = 0);
 221   virtual void OnEndDragLeft(double x, double y, int keys=0, int attachment = 0);
 222   virtual void OnDragRight(bool draw, double x, double y, int keys=0, int attachment = 0); // Erase if draw false
 223   virtual void OnBeginDragRight(double x, double y, int keys=0, int attachment = 0);
 224   virtual void OnEndDragRight(double x, double y, int keys=0, int attachment = 0);
 225   virtual void OnDrawOutline(wxDC& dc, double x, double y, double w, double h);
 226   virtual void OnDrawControlPoints(wxDC& dc);
 227   virtual void OnEraseControlPoints(wxDC& dc);
 228
 229   virtual void OnBeginSize(double WXUNUSED(w), double WXUNUSED(h)) { }
 230   virtual void OnEndSize(double WXUNUSED(w), double WXUNUSED(h)) { }
 231
 232   // Control points ('handles') redirect control to the actual shape, to make it easier
 233   // to override sizing behaviour.
 234   virtual void OnSizingDragLeft(wxControlPoint* pt, bool draw, double x, double y, int keys=0, int attachment = 0); // Erase if draw false
 235   virtual void OnSizingBeginDragLeft(wxControlPoint* pt, double x, double y, int keys=0, int attachment = 0);
 236   virtual void OnSizingEndDragLeft(wxControlPoint* pt, double x, double y, int keys=0, int attachment = 0);
 237
 238   virtual void MakeControlPoints();
 239   virtual void DeleteControlPoints(wxDC *dc = NULL);
 240   virtual void ResetControlPoints();
 241
 242   inline wxShapeEvtHandler *GetEventHandler() { return m_eventHandler; }
 243   inline void SetEventHandler(wxShapeEvtHandler *handler) { m_eventHandler = handler; }
 244
 245   // Mandatory control points, e.g. the divided line moving handles
 246   // should appear even if a child of the 'selected' image
 247   virtual void MakeMandatoryControlPoints();
 248   virtual void ResetMandatoryControlPoints();
 249
 250   inline virtual bool Recompute() { return TRUE; };
 251   // Calculate size recursively, if size changes. Size might depend on children.
 252   inline virtual void CalculateSize() { };
 253   virtual void Select(bool select = TRUE, wxDC* dc = NULL);
 254   virtual void SetHighlight(bool hi = TRUE, bool recurse = FALSE);
 255   inline virtual bool IsHighlighted() const { return m_highlighted; };
 256   virtual bool Selected() const;
 257   virtual bool AncestorSelected() const;
 258   void SetSensitivityFilter(int sens = OP_ALL, bool recursive = FALSE);
 259   int GetSensitivityFilter() const { return m_sensitivity; }
 260   void SetDraggable(bool drag, bool recursive = FALSE);
 261   inline  void SetFixedSize(bool x, bool y) { m_fixedWidth = x; m_fixedHeight = y; };
 262   inline  void GetFixedSize(bool *x, bool *y) const { *x = m_fixedWidth; *y = m_fixedHeight; };
 263   inline  bool GetFixedWidth() const { return m_fixedWidth; }
 264   inline  bool GetFixedHeight() const { return m_fixedHeight; }
 265   inline  void SetSpaceAttachments(bool sp) { m_spaceAttachments = sp; };
 266   inline  bool GetSpaceAttachments() const { return m_spaceAttachments; };
 267   void SetShadowMode(int mode, bool redraw = FALSE);
 268   inline int GetShadowMode() const { return m_shadowMode; }
 269   virtual bool HitTest(double x, double y, int *attachment, double *distance);
 270   inline void SetCentreResize(bool cr) { m_centreResize = cr; }
 271   inline bool GetCentreResize() const { return m_centreResize; }
 272   inline wxList& GetLines() { return m_lines; }
 273   inline void SetDisableLabel(bool flag) { m_disableLabel = flag; }
 274   inline bool GetDisableLabel() const { return m_disableLabel; }
 275   inline void SetAttachmentMode(bool flag) { m_attachmentMode = flag; }
 276   inline bool GetAttachmentMode() const { return m_attachmentMode; }
 277   inline void SetId(long i) { m_id = i; }
 278   inline long GetId() const { return m_id; }
 279
 280   void SetPen(wxPen *pen);
 281   void SetBrush(wxBrush *brush);
 282   inline void SetClientData(wxObject *client_data) { m_clientData = client_data; };
 283   inline wxObject *GetClientData() const { return m_clientData; };
 284
 285   virtual void Show(bool show);
 286   virtual bool IsShown() const { return m_visible; }
 287   virtual void Move(wxDC& dc, double x1, double y1, bool display = TRUE);
 288   virtual void Erase(wxDC& dc);
 289   virtual void EraseContents(wxDC& dc);
 290   virtual void Draw(wxDC& dc);
 291   virtual void Flash();
 292   virtual void MoveLinks(wxDC& dc);
 293   virtual void DrawContents(wxDC& dc);  // E.g. for drawing text label
 294   virtual void SetSize(double x, double y, bool recursive = TRUE);
 295   virtual void SetAttachmentSize(double x, double y);
 296   void Attach(wxShapeCanvas *can);
 297   void Detach();
 298
 299   inline virtual bool Constrain() { return FALSE; } ;
 300
 301   void AddLine(wxLineShape *line, wxShape *other,
 302                int attachFrom = 0, int attachTo = 0,
 303                // The line ordering
 304                int positionFrom = -1, int positionTo = -1);
 305
 306   // Return the zero-based position in m_lines of line.
 307   int GetLinePosition(wxLineShape* line);
 308
 309   void AddText(const wxString& string);
 310
 311   inline wxPen *GetPen() const { return m_pen; }
 312   inline wxBrush *GetBrush() const { return m_brush; }
 313
 314   /*
 315    * Region-specific functions (defaults to the default region
 316    * for simple objects
 317    */
 318
 319   // Set the default, single region size to be consistent
 320   // with the object size
 321   void SetDefaultRegionSize();
 322   virtual void FormatText(wxDC& dc, const wxString& s, int regionId = 0);
 323   virtual void SetFormatMode(int mode, int regionId = 0);
 324   virtual int GetFormatMode(int regionId = 0) const;
 325   virtual void SetFont(wxFont *font, int regionId = 0);
 326   virtual wxFont *GetFont(int regionId = 0) const;
 327   virtual void SetTextColour(const wxString& colour, int regionId = 0);
 328   virtual wxString GetTextColour(int regionId = 0) const;
 329   virtual inline int GetNumberOfTextRegions() const { return m_regions.Number(); }
 330   virtual void SetRegionName(const wxString& name, int regionId = 0);
 331
 332   // Get the name representing the region for this image alone.
 333   // I.e. this image's region ids go from 0 to N-1.
 334   // But the names might be "0.2.0", "0.2.1" etc. depending on position in composite.
 335   // So the last digit represents the region Id, the others represent positions
 336   // in composites.
 337   virtual wxString GetRegionName(int regionId);
 338
 339   // Gets the region corresponding to the name, or -1 if not found.
 340   virtual int GetRegionId(const wxString& name);
 341
 342   // Construct names for regions, unique even for children of a composite.
 343   virtual void NameRegions(const wxString& parentName = "");
 344
 345   // Get list of regions
 346   inline wxList& GetRegions() const { return (wxList&) m_regions; }
 347
 348   virtual void AddRegion(wxShapeRegion *region);
 349
 350   virtual void ClearRegions();
 351
 352   // Assign new ids to this image and children (if composite)
 353   void AssignNewIds();
 354
 355   // Returns actual image (same as 'this' if non-composite) and region id
 356   // for given region name.
 357   virtual wxShape *FindRegion(const wxString& regionName, int *regionId);
 358
 359   // Finds all region names for this image (composite or simple).
 360   // Supply empty string list.
 361   virtual void FindRegionNames(wxStringList& list);
 362
 363   virtual void ClearText(int regionId = 0);
 364   void RemoveLine(wxLineShape *line);
 365
 366 #ifdef PROLOGIO
 367   // Prolog database stuff
 368   virtual char *GetFunctor();
 369   virtual void WritePrologAttributes(wxExpr *clause);
 370   virtual void ReadPrologAttributes(wxExpr *clause);
 371
 372   // In case the object has constraints it needs to read in in a different pass
 373   inline virtual void ReadConstraints(wxExpr *WXUNUSED(clause), wxExprDatabase *WXUNUSED(database)) { };
 374   virtual void WriteRegions(wxExpr *clause);
 375   virtual void ReadRegions(wxExpr *clause);
 376 #endif
 377
 378   // Attachment code
 379   virtual bool GetAttachmentPosition(int attachment, double *x, double *y,
 380                                      int nth = 0, int no_arcs = 1, wxLineShape *line = NULL);
 381   virtual int GetNumberOfAttachments();
 382   virtual bool AttachmentIsValid(int attachment);
 383
 384   // Assuming the attachment lies along a vertical or horizontal line,
 385   // calculate the position on that point.
 386   wxRealPoint CalcSimpleAttachment(const wxRealPoint& pt1, const wxRealPoint& pt2,
 387     int nth, int noArcs, wxLineShape* line);
 388
 389   // Returns TRUE if pt1 <= pt2 in the sense that one point comes before another on an
 390   // edge of the shape.
 391   // attachmentPoint is the attachment point (= side) in question.
 392   bool AttachmentSortTest(int attachmentPoint, const wxRealPoint& pt1, const wxRealPoint& pt2);
 393
 394   virtual void EraseLinks(wxDC& dc, int attachment = -1, bool recurse = FALSE);
 395   virtual void DrawLinks(wxDC& dc, int attachment = -1, bool recurse = FALSE);
 396
 397   virtual void MoveLineToNewAttachment(wxDC& dc, wxLineShape *to_move,
 398                                        double x, double y);
 399
 400   // Reorders the lines coming into the node image at this attachment
 401   // position, in the order in which they appear in linesToSort.
 402   virtual void SortLines(int attachment, wxList& linesToSort);
 403
 404   // Apply an attachment ordering change
 405   void ApplyAttachmentOrdering(wxList& ordering);
 406
 407   // Can override this to prevent or intercept line reordering.
 408   virtual void OnChangeAttachment(int attachment, wxLineShape* line, wxList& ordering);
 409
 410   // This is really to distinguish between lines and other images.
 411   // For lines, want to pass drag to canvas, since lines tend to prevent
 412   // dragging on a canvas (they get in the way.)
 413   virtual bool Draggable() const { return TRUE; }
 414
 415   // Returns TRUE if image is a descendant of this image
 416   bool HasDescendant(wxShape *image);
 417
 418   // Creates a copy of this shape.
 419   wxShape *CreateNewCopy(bool resetMapping = TRUE, bool recompute = TRUE);
 420
 421   // Does the copying for this object
 422   virtual void Copy(wxShape& copy);
 423
 424   // Does the copying for this object, including copying event
 425   // handler data if any. Calls the virtual Copy function.
 426   void CopyWithHandler(wxShape& copy);
 427
 428   // Rotate about the given axis by the given amount in radians
 429   // (does nothing for most objects)
 430   // But even non-rotating objects should record their notional
 431   // rotation in case it's important (e.g. in dog-leg code).
 432   virtual inline void Rotate(double WXUNUSED(x), double WXUNUSED(y), double theta) { m_rotation = theta; }
 433   virtual inline double GetRotation() const { return m_rotation; }
 434
 435   void ClearAttachments();
 436
 437   // Recentres all the text regions for this object
 438   void Recentre(wxDC& dc);
 439
 440   // Clears points from a list of wxRealPoints
 441   void ClearPointList(wxList& list);
 442
 443  private:
 444   wxObject*             m_clientData;
 445
 446  protected:
 447   wxShapeEvtHandler*    m_eventHandler;
 448   bool                  m_formatted;
 449   double                 m_xpos, m_ypos;
 450   wxPen*                m_pen;
 451   wxBrush*              m_brush;
 452   wxFont*               m_font;
 453   wxColour*             m_textColour;
 454   wxString              m_textColourName;
 455   wxShapeCanvas*        m_canvas;
 456   wxList                m_lines;
 457   wxList                m_text;
 458   wxList                m_controlPoints;
 459   wxList                m_regions;
 460   wxList                m_attachmentPoints;
 461   bool                  m_visible;
 462   bool                  m_disableLabel;
 463   long                  m_id;
 464   bool                  m_selected;
 465   bool                  m_highlighted;      // Different from selected: user-defined highlighting,
 466                                             // e.g. thick border.
 467   double                 m_rotation;
 468   int                   m_sensitivity;
 469   bool                  m_draggable;
 470   bool                  m_attachmentMode;   // TRUE if using attachments, FALSE otherwise
 471   bool                  m_spaceAttachments; // TRUE if lines at one side should be spaced
 472   bool                  m_fixedWidth;
 473   bool                  m_fixedHeight;
 474   bool                  m_centreResize;    // Default is to resize keeping the centre constant (TRUE)
 475   bool                  m_drawHandles;     // Don't draw handles if FALSE, usually TRUE
 476   wxList                m_children;      // In case it's composite
 477   wxShape*              m_parent;      // In case it's a child
 478   int                   m_formatMode;
 479   int                   m_shadowMode;
 480   wxBrush*              m_shadowBrush;
 481   int                   m_shadowOffsetX;
 482   int                   m_shadowOffsetY;
 483   int                   m_textMarginX;    // Gap between text and border
 484   int                   m_textMarginY;
 485   wxString              m_regionName;
 486 };
 487
 488 class wxPolygonShape: public wxShape
 489 {
 490  DECLARE_DYNAMIC_CLASS(wxPolygonShape)
 491  public:
 492   wxPolygonShape();
 493   ~wxPolygonShape();
 494
 495   // Takes a list of wxRealPoints; each point is an OFFSET from the centre.
 496   // Deletes user's points in destructor.
 497   virtual void Create(wxList *points);
 498   virtual void ClearPoints();
 499
 500   void GetBoundingBoxMin(double *w, double *h);
 501   void CalculateBoundingBox();
 502   bool GetPerimeterPoint(double x1, double y1,
 503                                  double x2, double y2,
 504                                  double *x3, double *y3);
 505   bool HitTest(double x, double y, int *attachment, double *distance);
 506   void SetSize(double x, double y, bool recursive = TRUE);
 507   void OnDraw(wxDC& dc);
 508   void OnDrawOutline(wxDC& dc, double x, double y, double w, double h);
 509
 510   // Control points ('handles') redirect control to the actual shape, to make it easier
 511   // to override sizing behaviour.
 512   virtual void OnSizingDragLeft(wxControlPoint* pt, bool draw, double x, double y, int keys=0, int attachment = 0);
 513   virtual void OnSizingBeginDragLeft(wxControlPoint* pt, double x, double y, int keys=0, int attachment = 0);
 514   virtual void OnSizingEndDragLeft(wxControlPoint* pt, double x, double y, int keys=0, int attachment = 0);
 515
 516   // A polygon should have a control point at each vertex,
 517   // with the option of moving the control points individually
 518   // to change the shape.
 519   void MakeControlPoints();
 520   void ResetControlPoints();
 521
 522   // If we've changed the shape, must make the original
 523   // points match the working points
 524   void UpdateOriginalPoints();
 525
 526   // Add a control point after the given point
 527   virtual void AddPolygonPoint(int pos = 0);
 528
 529   // Delete a control point
 530   virtual void DeletePolygonPoint(int pos = 0);
 531
 532   // Recalculates the centre of the polygon
 533   virtual void CalculatePolygonCentre();
 534
 535 #ifdef PROLOGIO
 536   // Prolog database stuff
 537   void WritePrologAttributes(wxExpr *clause);
 538   void ReadPrologAttributes(wxExpr *clause);
 539 #endif
 540
 541   int GetNumberOfAttachments();
 542   bool GetAttachmentPosition(int attachment, double *x, double *y,
 543                                      int nth = 0, int no_arcs = 1, wxLineShape *line = NULL);
 544   bool AttachmentIsValid(int attachment);
 545   // Does the copying for this object
 546   void Copy(wxShape& copy);
 547
 548   inline wxList *GetPoints() { return m_points; }
 549
 550  private:
 551   wxList*       m_points;
 552   wxList*       m_originalPoints;
 553   double         m_boundWidth;
 554   double         m_boundHeight;
 555   double         m_originalWidth;
 556   double         m_originalHeight;
 557 };
 558
 559 class wxRectangleShape: public wxShape
 560 {
 561  DECLARE_DYNAMIC_CLASS(wxRectangleShape)
 562  public:
 563   wxRectangleShape(double w = 0.0, double h = 0.0);
 564   void GetBoundingBoxMin(double *w, double *h);
 565   bool GetPerimeterPoint(double x1, double y1,
 566                                  double x2, double y2,
 567                                  double *x3, double *y3);
 568   void OnDraw(wxDC& dc);
 569   void SetSize(double x, double y, bool recursive = TRUE);
 570   void SetCornerRadius(double rad); // If > 0, rounded corners
 571
 572 #ifdef PROLOGIO
 573   // Prolog database stuff
 574   void WritePrologAttributes(wxExpr *clause);
 575   void ReadPrologAttributes(wxExpr *clause);
 576 #endif
 577
 578   int GetNumberOfAttachments();
 579   bool GetAttachmentPosition(int attachment, double *x, double *y,
 580                                      int nth = 0, int no_arcs = 1, wxLineShape *line = NULL);
 581   // Does the copying for this object
 582   void Copy(wxShape& copy);
 583
 584   inline double GetWidth() const { return m_width; }
 585   inline double GetHeight() const { return m_height; }
 586   inline void SetWidth(double w) { m_width = w; }
 587   inline void SetHeight(double h) { m_height = h; }
 588
 589 protected:
 590   double m_width;
 591   double m_height;
 592   double m_cornerRadius;
 593 };
 594
 595 class wxTextShape: public wxRectangleShape
 596 {
 597  DECLARE_DYNAMIC_CLASS(wxTextShape)
 598  public:
 599   wxTextShape(double width = 0.0, double height = 0.0);
 600
 601   void OnDraw(wxDC& dc);
 602
 603 #ifdef PROLOGIO
 604   void WritePrologAttributes(wxExpr *clause);
 605 #endif
 606
 607   // Does the copying for this object
 608   void Copy(wxShape& copy);
 609 };
 610
 611 class wxEllipseShape: public wxShape
 612 {
 613  DECLARE_DYNAMIC_CLASS(wxEllipseShape)
 614  public:
 615   wxEllipseShape(double w = 0.0, double h = 0.0);
 616
 617   void GetBoundingBoxMin(double *w, double *h);
 618   bool GetPerimeterPoint(double x1, double y1,
 619                                  double x2, double y2,
 620                                  double *x3, double *y3);
 621
 622   void OnDraw(wxDC& dc);
 623   void SetSize(double x, double y, bool recursive = TRUE);
 624
 625 #ifdef PROLOGIO
 626   // Prolog database stuff
 627   void WritePrologAttributes(wxExpr *clause);
 628   void ReadPrologAttributes(wxExpr *clause);
 629 #endif
 630
 631   int GetNumberOfAttachments();
 632   bool GetAttachmentPosition(int attachment, double *x, double *y,
 633                                      int nth = 0, int no_arcs = 1, wxLineShape *line = NULL);
 634
 635   // Does the copying for this object
 636   void Copy(wxShape& copy);
 637
 638   inline double GetWidth() const { return m_width; }
 639   inline double GetHeight() const { return m_height; }
 640
 641 protected:
 642   double m_width;
 643   double m_height;
 644 };
 645
 646 class wxCircleShape: public wxEllipseShape
 647 {
 648  DECLARE_DYNAMIC_CLASS(wxCircleShape)
 649  public:
 650   wxCircleShape(double w = 0.0);
 651
 652   bool GetPerimeterPoint(double x1, double y1,
 653                                  double x2, double y2,
 654                                  double *x3, double *y3);
 655   // Does the copying for this object
 656   void Copy(wxShape& copy);
 657 };
 658
 659 #endif
 660  // _OGL_BASIC_H_