contrib/include/wx/ogl/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 // Attachment modes
  98 #define ATTACHMENT_MODE_NONE        0
  99 #define ATTACHMENT_MODE_EDGE        1
 100 #define ATTACHMENT_MODE_BRANCHING   2
 101
 102 // Sub-modes for branching attachment mode
 103 #define BRANCHING_ATTACHMENT_NORMAL 1
 104 #define BRANCHING_ATTACHMENT_BLOB   2
 105
 106 class wxShapeTextLine;
 107 class wxShapeCanvas;
 108 class wxLineShape;
 109 class wxControlPoint;
 110 class wxShapeRegion;
 111 class wxShape;
 112
 113 #ifdef PROLOGIO
 114 class WXDLLEXPORT wxExpr;
 115 class WXDLLEXPORT wxExprDatabase;
 116 #endif
 117
 118 // Round up
 119 #define WXROUND(x) ( (long) (x + 0.5) )
 120
 121
 122 // logical function to use when drawing rubberband boxes, etc.
 123 #define OGLRBLF         wxINVERT
 124
 125
 126
 127 class wxShapeEvtHandler: public wxObject, public wxClientDataContainer
 128 {
 129  DECLARE_DYNAMIC_CLASS(wxShapeEvtHandler)
 130
 131  public:
 132   wxShapeEvtHandler(wxShapeEvtHandler *prev = NULL, wxShape *shape = NULL);
 133   virtual ~wxShapeEvtHandler();
 134
 135   inline void SetShape(wxShape *sh) { m_handlerShape = sh; }
 136   inline wxShape *GetShape() const { return m_handlerShape; }
 137
 138   inline void SetPreviousHandler(wxShapeEvtHandler* handler) { m_previousHandler = handler; }
 139   inline wxShapeEvtHandler* GetPreviousHandler() const { return m_previousHandler; }
 140
 141   // This is called when the _shape_ is deleted.
 142   virtual void OnDelete();
 143   virtual void OnDraw(wxDC& dc);
 144   virtual void OnDrawContents(wxDC& dc);
 145   virtual void OnDrawBranches(wxDC& dc, bool erase = FALSE);
 146   virtual void OnMoveLinks(wxDC& dc);
 147   virtual void OnErase(wxDC& dc);
 148   virtual void OnEraseContents(wxDC& dc);
 149   virtual void OnHighlight(wxDC& dc);
 150   virtual void OnLeftClick(double x, double y, int keys = 0, int attachment = 0);
 151   virtual void OnLeftDoubleClick(double x, double y, int keys = 0, int attachment = 0);
 152   virtual void OnRightClick(double x, double y, int keys = 0, int attachment = 0);
 153   virtual void OnSize(double x, double y);
 154   virtual bool OnMovePre(wxDC& dc, double x, double y, double old_x, double old_y, bool display = TRUE);
 155   virtual void OnMovePost(wxDC& dc, double x, double y, double old_x, double old_y, bool display = TRUE);
 156
 157   virtual void OnDragLeft(bool draw, double x, double y, int keys=0, int attachment = 0); // Erase if draw false
 158   virtual void OnBeginDragLeft(double x, double y, int keys=0, int attachment = 0);
 159   virtual void OnEndDragLeft(double x, double y, int keys=0, int attachment = 0);
 160   virtual void OnDragRight(bool draw, double x, double y, int keys=0, int attachment = 0); // Erase if draw false
 161   virtual void OnBeginDragRight(double x, double y, int keys=0, int attachment = 0);
 162   virtual void OnEndDragRight(double x, double y, int keys=0, int attachment = 0);
 163   virtual void OnDrawOutline(wxDC& dc, double x, double y, double w, double h);
 164   virtual void OnDrawControlPoints(wxDC& dc);
 165   virtual void OnEraseControlPoints(wxDC& dc);
 166   virtual void OnMoveLink(wxDC& dc, bool moveControlPoints = TRUE);
 167
 168   // Control points ('handles') redirect control to the actual shape, to make it easier
 169   // to override sizing behaviour.
 170   virtual void OnSizingDragLeft(wxControlPoint* pt, bool draw, double x, double y, int keys=0, int attachment = 0); // Erase if draw false
 171   virtual void OnSizingBeginDragLeft(wxControlPoint* pt, double x, double y, int keys=0, int attachment = 0);
 172   virtual void OnSizingEndDragLeft(wxControlPoint* pt, double x, double y, int keys=0, int attachment = 0);
 173
 174   virtual void OnBeginSize(double WXUNUSED(w), double WXUNUSED(h)) { }
 175   virtual void OnEndSize(double WXUNUSED(w), double WXUNUSED(h)) { }
 176
 177   // Can override this to prevent or intercept line reordering.
 178   virtual void OnChangeAttachment(int attachment, wxLineShape* line, wxList& ordering);
 179
 180   // Creates a copy of this event handler.
 181   wxShapeEvtHandler *CreateNewCopy();
 182
 183   // Does the copy - override for new event handlers which might store
 184   // app-specific data.
 185   virtual void CopyData(wxShapeEvtHandler& copy) {};
 186
 187  private:
 188   wxShapeEvtHandler*    m_previousHandler;
 189   wxShape*              m_handlerShape;
 190 };
 191
 192 class wxShape: public wxShapeEvtHandler
 193 {
 194  DECLARE_ABSTRACT_CLASS(wxShape)
 195
 196  public:
 197
 198   wxShape(wxShapeCanvas *can = NULL);
 199   virtual ~wxShape();
 200   virtual void GetBoundingBoxMax(double *width, double *height);
 201   virtual void GetBoundingBoxMin(double *width, double *height) = 0;
 202   virtual bool GetPerimeterPoint(double x1, double y1,
 203                                  double x2, double y2,
 204                                  double *x3, double *y3);
 205   inline wxShapeCanvas *GetCanvas() { return m_canvas; }
 206   void SetCanvas(wxShapeCanvas *the_canvas);
 207   virtual void AddToCanvas(wxShapeCanvas *the_canvas, wxShape *addAfter = NULL);
 208   virtual void InsertInCanvas(wxShapeCanvas *the_canvas);
 209
 210   virtual void RemoveFromCanvas(wxShapeCanvas *the_canvas);
 211   inline double GetX() const { return m_xpos; }
 212   inline double GetY() const { return m_ypos; }
 213   inline void SetX(double x) { m_xpos = x; }
 214   inline void SetY(double y) { m_ypos = y; }
 215
 216   inline wxShape *GetParent() const { return m_parent; }
 217   inline void SetParent(wxShape *p) { m_parent = p; }
 218   wxShape *GetTopAncestor();
 219   inline wxList& GetChildren() { return m_children; }
 220
 221   virtual void OnDraw(wxDC& dc);
 222   virtual void OnDrawContents(wxDC& dc);
 223   virtual void OnMoveLinks(wxDC& dc);
 224   virtual void Unlink() { };
 225   void SetDrawHandles(bool drawH);
 226   inline bool GetDrawHandles() { return m_drawHandles; }
 227   virtual void OnErase(wxDC& dc);
 228   virtual void OnEraseContents(wxDC& dc);
 229   virtual void OnHighlight(wxDC& dc);
 230   virtual void OnLeftClick(double x, double y, int keys = 0, int attachment = 0);
 231   virtual void OnLeftDoubleClick(double x, double y, int keys = 0, int attachment = 0) {}
 232   virtual void OnRightClick(double x, double y, int keys = 0, int attachment = 0);
 233   virtual void OnSize(double x, double y);
 234   virtual bool OnMovePre(wxDC& dc, double x, double y, double old_x, double old_y, bool display = TRUE);
 235   virtual void OnMovePost(wxDC& dc, double x, double y, double old_x, double old_y, bool display = TRUE);
 236
 237   virtual void OnDragLeft(bool draw, double x, double y, int keys=0, int attachment = 0); // Erase if draw false
 238   virtual void OnBeginDragLeft(double x, double y, int keys=0, int attachment = 0);
 239   virtual void OnEndDragLeft(double x, double y, int keys=0, int attachment = 0);
 240   virtual void OnDragRight(bool draw, double x, double y, int keys=0, int attachment = 0); // Erase if draw false
 241   virtual void OnBeginDragRight(double x, double y, int keys=0, int attachment = 0);
 242   virtual void OnEndDragRight(double x, double y, int keys=0, int attachment = 0);
 243   virtual void OnDrawOutline(wxDC& dc, double x, double y, double w, double h);
 244   virtual void OnDrawControlPoints(wxDC& dc);
 245   virtual void OnEraseControlPoints(wxDC& dc);
 246
 247   virtual void OnBeginSize(double WXUNUSED(w), double WXUNUSED(h)) { }
 248   virtual void OnEndSize(double WXUNUSED(w), double WXUNUSED(h)) { }
 249
 250   // Control points ('handles') redirect control to the actual shape, to make it easier
 251   // to override sizing behaviour.
 252   virtual void OnSizingDragLeft(wxControlPoint* pt, bool draw, double x, double y, int keys=0, int attachment = 0); // Erase if draw false
 253   virtual void OnSizingBeginDragLeft(wxControlPoint* pt, double x, double y, int keys=0, int attachment = 0);
 254   virtual void OnSizingEndDragLeft(wxControlPoint* pt, double x, double y, int keys=0, int attachment = 0);
 255
 256   virtual void MakeControlPoints();
 257   virtual void DeleteControlPoints(wxDC *dc = NULL);
 258   virtual void ResetControlPoints();
 259
 260   inline wxShapeEvtHandler *GetEventHandler() { return m_eventHandler; }
 261   inline void SetEventHandler(wxShapeEvtHandler *handler) { m_eventHandler = handler; }
 262
 263   // Mandatory control points, e.g. the divided line moving handles
 264   // should appear even if a child of the 'selected' image
 265   virtual void MakeMandatoryControlPoints();
 266   virtual void ResetMandatoryControlPoints();
 267
 268   inline virtual bool Recompute() { return TRUE; };
 269   // Calculate size recursively, if size changes. Size might depend on children.
 270   inline virtual void CalculateSize() { };
 271   virtual void Select(bool select = TRUE, wxDC* dc = NULL);
 272   virtual void SetHighlight(bool hi = TRUE, bool recurse = FALSE);
 273   inline virtual bool IsHighlighted() const { return m_highlighted; };
 274   virtual bool Selected() const;
 275   virtual bool AncestorSelected() const;
 276   void SetSensitivityFilter(int sens = OP_ALL, bool recursive = FALSE);
 277   int GetSensitivityFilter() const { return m_sensitivity; }
 278   void SetDraggable(bool drag, bool recursive = FALSE);
 279   inline  void SetFixedSize(bool x, bool y) { m_fixedWidth = x; m_fixedHeight = y; };
 280   inline  void GetFixedSize(bool *x, bool *y) const { *x = m_fixedWidth; *y = m_fixedHeight; };
 281   inline  bool GetFixedWidth() const { return m_fixedWidth; }
 282   inline  bool GetFixedHeight() const { return m_fixedHeight; }
 283   inline  void SetSpaceAttachments(bool sp) { m_spaceAttachments = sp; };
 284   inline  bool GetSpaceAttachments() const { return m_spaceAttachments; };
 285   void SetShadowMode(int mode, bool redraw = FALSE);
 286   inline int GetShadowMode() const { return m_shadowMode; }
 287   virtual bool HitTest(double x, double y, int *attachment, double *distance);
 288   inline void SetCentreResize(bool cr) { m_centreResize = cr; }
 289   inline bool GetCentreResize() const { return m_centreResize; }
 290   inline void SetMaintainAspectRatio(bool ar) { m_maintainAspectRatio = ar; }
 291   inline bool GetMaintainAspectRatio() const { return m_maintainAspectRatio; }
 292   inline wxList& GetLines() const { return (wxList&) m_lines; }
 293   inline void SetDisableLabel(bool flag) { m_disableLabel = flag; }
 294   inline bool GetDisableLabel() const { return m_disableLabel; }
 295   inline void SetAttachmentMode(int mode) { m_attachmentMode = mode; }
 296   inline int GetAttachmentMode() const { return m_attachmentMode; }
 297   inline void SetId(long i) { m_id = i; }
 298   inline long GetId() const { return m_id; }
 299
 300   void SetPen(wxPen *pen);
 301   void SetBrush(wxBrush *brush);
 302
 303   virtual void Show(bool show);
 304   virtual bool IsShown() const { return m_visible; }
 305   virtual void Move(wxDC& dc, double x1, double y1, bool display = TRUE);
 306   virtual void Erase(wxDC& dc);
 307   virtual void EraseContents(wxDC& dc);
 308   virtual void Draw(wxDC& dc);
 309   virtual void Flash();
 310   virtual void MoveLinks(wxDC& dc);
 311   virtual void DrawContents(wxDC& dc);  // E.g. for drawing text label
 312   virtual void SetSize(double x, double y, bool recursive = TRUE);
 313   virtual void SetAttachmentSize(double x, double y);
 314   void Attach(wxShapeCanvas *can);
 315   void Detach();
 316
 317   inline virtual bool Constrain() { return FALSE; } ;
 318
 319   void AddLine(wxLineShape *line, wxShape *other,
 320                int attachFrom = 0, int attachTo = 0,
 321                // The line ordering
 322                int positionFrom = -1, int positionTo = -1);
 323
 324   // Return the zero-based position in m_lines of line.
 325   int GetLinePosition(wxLineShape* line);
 326
 327   void AddText(const wxString& string);
 328
 329   inline wxPen *GetPen() const { return m_pen; }
 330   inline wxBrush *GetBrush() const { return m_brush; }
 331
 332   /*
 333    * Region-specific functions (defaults to the default region
 334    * for simple objects
 335    */
 336
 337   // Set the default, single region size to be consistent
 338   // with the object size
 339   void SetDefaultRegionSize();
 340   virtual void FormatText(wxDC& dc, const wxString& s, int regionId = 0);
 341   virtual void SetFormatMode(int mode, int regionId = 0);
 342   virtual int GetFormatMode(int regionId = 0) const;
 343   virtual void SetFont(wxFont *font, int regionId = 0);
 344   virtual wxFont *GetFont(int regionId = 0) const;
 345   virtual void SetTextColour(const wxString& colour, int regionId = 0);
 346   virtual wxString GetTextColour(int regionId = 0) const;
 347   virtual inline int GetNumberOfTextRegions() const { return m_regions.Number(); }
 348   virtual void SetRegionName(const wxString& name, int regionId = 0);
 349
 350   // Get the name representing the region for this image alone.
 351   // I.e. this image's region ids go from 0 to N-1.
 352   // But the names might be "0.2.0", "0.2.1" etc. depending on position in composite.
 353   // So the last digit represents the region Id, the others represent positions
 354   // in composites.
 355   virtual wxString GetRegionName(int regionId);
 356
 357   // Gets the region corresponding to the name, or -1 if not found.
 358   virtual int GetRegionId(const wxString& name);
 359
 360   // Construct names for regions, unique even for children of a composite.
 361   virtual void NameRegions(const wxString& parentName = "");
 362
 363   // Get list of regions
 364   inline wxList& GetRegions() const { return (wxList&) m_regions; }
 365
 366   virtual void AddRegion(wxShapeRegion *region);
 367
 368   virtual void ClearRegions();
 369
 370   // Assign new ids to this image and children (if composite)
 371   void AssignNewIds();
 372
 373   // Returns actual image (same as 'this' if non-composite) and region id
 374   // for given region name.
 375   virtual wxShape *FindRegion(const wxString& regionName, int *regionId);
 376
 377   // Finds all region names for this image (composite or simple).
 378   // Supply empty string list.
 379   virtual void FindRegionNames(wxStringList& list);
 380
 381   virtual void ClearText(int regionId = 0);
 382   void RemoveLine(wxLineShape *line);
 383
 384 #ifdef PROLOGIO
 385   // I/O
 386   virtual void WriteAttributes(wxExpr *clause);
 387   virtual void ReadAttributes(wxExpr *clause);
 388
 389   // In case the object has constraints it needs to read in in a different pass
 390   inline virtual void ReadConstraints(wxExpr *WXUNUSED(clause), wxExprDatabase *WXUNUSED(database)) { };
 391   virtual void WriteRegions(wxExpr *clause);
 392   virtual void ReadRegions(wxExpr *clause);
 393 #endif
 394
 395   // Attachment code
 396   virtual bool GetAttachmentPosition(int attachment, double *x, double *y,
 397                                      int nth = 0, int no_arcs = 1, wxLineShape *line = NULL);
 398   virtual int GetNumberOfAttachments() const;
 399   virtual bool AttachmentIsValid(int attachment) const;
 400
 401   // Only get the attachment position at the _edge_ of the shape, ignoring
 402   // branching mode. This is used e.g. to indicate the edge of interest, not the point
 403   // on the attachment branch.
 404   virtual bool GetAttachmentPositionEdge(int attachment, double *x, double *y,
 405                                      int nth = 0, int no_arcs = 1, wxLineShape *line = NULL);
 406
 407   // Assuming the attachment lies along a vertical or horizontal line,
 408   // calculate the position on that point.
 409   virtual wxRealPoint CalcSimpleAttachment(const wxRealPoint& pt1, const wxRealPoint& pt2,
 410     int nth, int noArcs, wxLineShape* line);
 411
 412   // Returns TRUE if pt1 <= pt2 in the sense that one point comes before another on an
 413   // edge of the shape.
 414   // attachmentPoint is the attachment point (= side) in question.
 415   virtual bool AttachmentSortTest(int attachmentPoint, const wxRealPoint& pt1, const wxRealPoint& pt2);
 416
 417   virtual void EraseLinks(wxDC& dc, int attachment = -1, bool recurse = FALSE);
 418   virtual void DrawLinks(wxDC& dc, int attachment = -1, bool recurse = FALSE);
 419
 420   virtual bool MoveLineToNewAttachment(wxDC& dc, wxLineShape *to_move,
 421                                        double x, double y);
 422
 423   // Reorders the lines coming into the node image at this attachment
 424   // position, in the order in which they appear in linesToSort.
 425   virtual void SortLines(int attachment, wxList& linesToSort);
 426
 427   // Apply an attachment ordering change
 428   void ApplyAttachmentOrdering(wxList& ordering);
 429
 430   // Can override this to prevent or intercept line reordering.
 431   virtual void OnChangeAttachment(int attachment, wxLineShape* line, wxList& ordering);
 432
 433   //// New banching attachment code, 24/9/98
 434
 435   //
 436   //             |________|
 437   //                 | <- root
 438   //                 | <- neck
 439   // shoulder1 ->---------<- shoulder2
 440   //             | | | | |<- stem
 441   //                      <- branching attachment point N-1
 442
 443   // This function gets the root point at the given attachment.
 444   virtual wxRealPoint GetBranchingAttachmentRoot(int attachment);
 445
 446   // This function gets information about where branching connections go (calls GetBranchingAttachmentRoot)
 447   virtual bool GetBranchingAttachmentInfo(int attachment, wxRealPoint& root, wxRealPoint& neck,
 448     wxRealPoint& shoulder1, wxRealPoint& shoulder2);
 449
 450   // n is the number of the adjoining line, from 0 to N-1 where N is the number of lines
 451   // at this attachment point.
 452   // attachmentPoint is where the arc meets the stem, and stemPoint is where the stem meets the
 453   // shoulder.
 454   virtual bool GetBranchingAttachmentPoint(int attachment, int n, wxRealPoint& attachmentPoint,
 455     wxRealPoint& stemPoint);
 456
 457   // Get the number of lines at this attachment position.
 458   virtual int GetAttachmentLineCount(int attachment) const;
 459
 460   // Draw the branches (not the actual arcs though)
 461   virtual void OnDrawBranches(wxDC& dc, int attachment, bool erase = FALSE);
 462   virtual void OnDrawBranches(wxDC& dc, bool erase = FALSE);
 463
 464   // Branching attachment settings
 465   inline void SetBranchNeckLength(int len) { m_branchNeckLength = len; }
 466   inline int GetBranchNeckLength() const { return m_branchNeckLength; }
 467
 468   inline void SetBranchStemLength(int len) { m_branchStemLength = len; }
 469   inline int GetBranchStemLength() const { return m_branchStemLength; }
 470
 471   inline void SetBranchSpacing(int len) { m_branchSpacing = len; }
 472   inline int GetBranchSpacing() const { return m_branchSpacing; }
 473
 474   // Further detail on branching style, e.g. blobs on interconnections
 475   inline void SetBranchStyle(long style) { m_branchStyle = style; }
 476   inline long GetBranchStyle() const { return m_branchStyle; }
 477
 478   // Rotate the standard attachment point from physical (0 is always North)
 479   // to logical (0 -> 1 if rotated by 90 degrees)
 480   virtual int PhysicalToLogicalAttachment(int physicalAttachment) const;
 481
 482   // Rotate the standard attachment point from logical
 483   // to physical (0 is always North)
 484   virtual int LogicalToPhysicalAttachment(int logicalAttachment) const;
 485
 486   // This is really to distinguish between lines and other images.
 487   // For lines, want to pass drag to canvas, since lines tend to prevent
 488   // dragging on a canvas (they get in the way.)
 489   virtual bool Draggable() const { return TRUE; }
 490
 491   // Returns TRUE if image is a descendant of this image
 492   bool HasDescendant(wxShape *image);
 493
 494   // Creates a copy of this shape.
 495   wxShape *CreateNewCopy(bool resetMapping = TRUE, bool recompute = TRUE);
 496
 497   // Does the copying for this object
 498   virtual void Copy(wxShape& copy);
 499
 500   // Does the copying for this object, including copying event
 501   // handler data if any. Calls the virtual Copy function.
 502   void CopyWithHandler(wxShape& copy);
 503
 504   // Rotate about the given axis by the given amount in radians.
 505   virtual void Rotate(double x, double y, double theta);
 506   virtual inline double GetRotation() const { return m_rotation; }
 507
 508   void ClearAttachments();
 509
 510   // Recentres all the text regions for this object
 511   void Recentre(wxDC& dc);
 512
 513   // Clears points from a list of wxRealPoints
 514   void ClearPointList(wxList& list);
 515
 516   // Return pen or brush of the right colour for the background
 517   wxPen GetBackgroundPen();
 518   wxBrush GetBackgroundBrush();
 519
 520
 521  protected:
 522   wxShapeEvtHandler*    m_eventHandler;
 523   bool                  m_formatted;
 524   double                m_xpos, m_ypos;
 525   wxPen*                m_pen;
 526   wxBrush*              m_brush;
 527   wxFont*               m_font;
 528   wxColour*             m_textColour;
 529   wxString              m_textColourName;
 530   wxShapeCanvas*        m_canvas;
 531   wxList                m_lines;
 532   wxList                m_text;
 533   wxList                m_controlPoints;
 534   wxList                m_regions;
 535   wxList                m_attachmentPoints;
 536   bool                  m_visible;
 537   bool                  m_disableLabel;
 538   long                  m_id;
 539   bool                  m_selected;
 540   bool                  m_highlighted;      // Different from selected: user-defined highlighting,
 541                                             // e.g. thick border.
 542   double                m_rotation;
 543   int                   m_sensitivity;
 544   bool                  m_draggable;
 545   int                   m_attachmentMode;   // 0 for no attachments, 1 if using normal attachments,
 546                                             // 2 for branching attachments
 547   bool                  m_spaceAttachments; // TRUE if lines at one side should be spaced
 548   bool                  m_fixedWidth;
 549   bool                  m_fixedHeight;
 550   bool                  m_centreResize;    // Default is to resize keeping the centre constant (TRUE)
 551   bool                  m_drawHandles;     // Don't draw handles if FALSE, usually TRUE
 552   wxList                m_children;      // In case it's composite
 553   wxShape*              m_parent;      // In case it's a child
 554   int                   m_formatMode;
 555   int                   m_shadowMode;
 556   wxBrush*              m_shadowBrush;
 557   int                   m_shadowOffsetX;
 558   int                   m_shadowOffsetY;
 559   int                   m_textMarginX;    // Gap between text and border
 560   int                   m_textMarginY;
 561   wxString              m_regionName;
 562   bool                  m_maintainAspectRatio;
 563   int                   m_branchNeckLength;
 564   int                   m_branchStemLength;
 565   int                   m_branchSpacing;
 566   long                  m_branchStyle;
 567 };
 568
 569 class wxPolygonShape: public wxShape
 570 {
 571  DECLARE_DYNAMIC_CLASS(wxPolygonShape)
 572  public:
 573   wxPolygonShape();
 574   ~wxPolygonShape();
 575
 576   // Takes a list of wxRealPoints; each point is an OFFSET from the centre.
 577   // Deletes user's points in destructor.
 578   virtual void Create(wxList *points);
 579   virtual void ClearPoints();
 580
 581   void GetBoundingBoxMin(double *w, double *h);
 582   void CalculateBoundingBox();
 583   bool GetPerimeterPoint(double x1, double y1,
 584                                  double x2, double y2,
 585                                  double *x3, double *y3);
 586   bool HitTest(double x, double y, int *attachment, double *distance);
 587   void SetSize(double x, double y, bool recursive = TRUE);
 588   void OnDraw(wxDC& dc);
 589   void OnDrawOutline(wxDC& dc, double x, double y, double w, double h);
 590
 591   // Control points ('handles') redirect control to the actual shape, to make it easier
 592   // to override sizing behaviour.
 593   virtual void OnSizingDragLeft(wxControlPoint* pt, bool draw, double x, double y, int keys=0, int attachment = 0);
 594   virtual void OnSizingBeginDragLeft(wxControlPoint* pt, double x, double y, int keys=0, int attachment = 0);
 595   virtual void OnSizingEndDragLeft(wxControlPoint* pt, double x, double y, int keys=0, int attachment = 0);
 596
 597   // A polygon should have a control point at each vertex,
 598   // with the option of moving the control points individually
 599   // to change the shape.
 600   void MakeControlPoints();
 601   void ResetControlPoints();
 602
 603   // If we've changed the shape, must make the original
 604   // points match the working points
 605   void UpdateOriginalPoints();
 606
 607   // Add a control point after the given point
 608   virtual void AddPolygonPoint(int pos = 0);
 609
 610   // Delete a control point
 611   virtual void DeletePolygonPoint(int pos = 0);
 612
 613   // Recalculates the centre of the polygon
 614   virtual void CalculatePolygonCentre();
 615
 616 #ifdef PROLOGIO
 617   void WriteAttributes(wxExpr *clause);
 618   void ReadAttributes(wxExpr *clause);
 619 #endif
 620
 621   int GetNumberOfAttachments() const;
 622   bool GetAttachmentPosition(int attachment, double *x, double *y,
 623                                      int nth = 0, int no_arcs = 1, wxLineShape *line = NULL);
 624   bool AttachmentIsValid(int attachment);
 625   // Does the copying for this object
 626   void Copy(wxShape& copy);
 627
 628   inline wxList *GetPoints() { return m_points; }
 629
 630   // Rotate about the given axis by the given amount in radians
 631   virtual void Rotate(double x, double y, double theta);
 632
 633  private:
 634   wxList*       m_points;
 635   wxList*       m_originalPoints;
 636   double        m_boundWidth;
 637   double        m_boundHeight;
 638   double        m_originalWidth;
 639   double        m_originalHeight;
 640 };
 641
 642 class wxRectangleShape: public wxShape
 643 {
 644  DECLARE_DYNAMIC_CLASS(wxRectangleShape)
 645  public:
 646   wxRectangleShape(double w = 0.0, double h = 0.0);
 647   void GetBoundingBoxMin(double *w, double *h);
 648   bool GetPerimeterPoint(double x1, double y1,
 649                                  double x2, double y2,
 650                                  double *x3, double *y3);
 651   void OnDraw(wxDC& dc);
 652   void SetSize(double x, double y, bool recursive = TRUE);
 653   void SetCornerRadius(double rad); // If > 0, rounded corners
 654
 655 #ifdef PROLOGIO
 656   void WriteAttributes(wxExpr *clause);
 657   void ReadAttributes(wxExpr *clause);
 658 #endif
 659
 660   int GetNumberOfAttachments() const;
 661   bool GetAttachmentPosition(int attachment, double *x, double *y,
 662                                      int nth = 0, int no_arcs = 1, wxLineShape *line = NULL);
 663   // Does the copying for this object
 664   void Copy(wxShape& copy);
 665
 666   inline double GetWidth() const { return m_width; }
 667   inline double GetHeight() const { return m_height; }
 668   inline void SetWidth(double w) { m_width = w; }
 669   inline void SetHeight(double h) { m_height = h; }
 670
 671 protected:
 672   double m_width;
 673   double m_height;
 674   double m_cornerRadius;
 675 };
 676
 677 class wxTextShape: public wxRectangleShape
 678 {
 679  DECLARE_DYNAMIC_CLASS(wxTextShape)
 680  public:
 681   wxTextShape(double width = 0.0, double height = 0.0);
 682
 683   void OnDraw(wxDC& dc);
 684
 685 #ifdef PROLOGIO
 686   void WriteAttributes(wxExpr *clause);
 687 #endif
 688
 689   // Does the copying for this object
 690   void Copy(wxShape& copy);
 691 };
 692
 693 class wxEllipseShape: public wxShape
 694 {
 695  DECLARE_DYNAMIC_CLASS(wxEllipseShape)
 696  public:
 697   wxEllipseShape(double w = 0.0, double h = 0.0);
 698
 699   void GetBoundingBoxMin(double *w, double *h);
 700   bool GetPerimeterPoint(double x1, double y1,
 701                                  double x2, double y2,
 702                                  double *x3, double *y3);
 703
 704   void OnDraw(wxDC& dc);
 705   void SetSize(double x, double y, bool recursive = TRUE);
 706
 707 #ifdef PROLOGIO
 708   void WriteAttributes(wxExpr *clause);
 709   void ReadAttributes(wxExpr *clause);
 710 #endif
 711
 712   int GetNumberOfAttachments() const;
 713   bool GetAttachmentPosition(int attachment, double *x, double *y,
 714                                      int nth = 0, int no_arcs = 1, wxLineShape *line = NULL);
 715
 716   // Does the copying for this object
 717   void Copy(wxShape& copy);
 718
 719   inline double GetWidth() const { return m_width; }
 720   inline double GetHeight() const { return m_height; }
 721
 722   inline void SetWidth(double w) { m_width = w; }
 723   inline void SetHeight(double h) { m_height = h; }
 724
 725 protected:
 726   double m_width;
 727   double m_height;
 728 };
 729
 730 class wxCircleShape: public wxEllipseShape
 731 {
 732  DECLARE_DYNAMIC_CLASS(wxCircleShape)
 733  public:
 734   wxCircleShape(double w = 0.0);
 735
 736   bool GetPerimeterPoint(double x1, double y1,
 737                                  double x2, double y2,
 738                                  double *x3, double *y3);
 739   // Does the copying for this object
 740   void Copy(wxShape& copy);
 741 };
 742
 743 #endif
 744  // _OGL_BASIC_H_