utils/ogl/src/basic.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        basic.cpp
   3 // Purpose:     Basic OGL 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 #ifdef __GNUG__
  13 #pragma implementation "basic.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include <wx/wxprec.h>
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24 #include <wx/wx.h>
  25 #endif
  26
  27 #ifdef PROLOGIO
  28 #include <wx/wxexpr.h>
  29 #endif
  30
  31 #if USE_IOSTREAMH
  32 #include <iostream.h>
  33 #else
  34 #include <iostream>
  35 #endif
  36
  37 #include <stdio.h>
  38 #include <ctype.h>
  39 #include <math.h>
  40
  41 #include "basic.h"
  42 #include "basicp.h"
  43 #include "composit.h"
  44 #include "lines.h"
  45 #include "canvas.h"
  46 #include "divided.h"
  47 #include "misc.h"
  48
  49 // Control point types
  50 // Rectangle and most other shapes
  51 #define CONTROL_POINT_VERTICAL   1
  52 #define CONTROL_POINT_HORIZONTAL 2
  53 #define CONTROL_POINT_DIAGONAL   3
  54
  55 // Line
  56 #define CONTROL_POINT_ENDPOINT_TO 4
  57 #define CONTROL_POINT_ENDPOINT_FROM 5
  58 #define CONTROL_POINT_LINE       6
  59
  60 IMPLEMENT_DYNAMIC_CLASS(wxShapeTextLine, wxObject)
  61 IMPLEMENT_DYNAMIC_CLASS(wxAttachmentPoint, wxObject)
  62
  63 wxShapeTextLine::wxShapeTextLine(double the_x, double the_y, const wxString& the_line)
  64 {
  65   m_x = the_x; m_y = the_y; m_line = the_line;
  66 }
  67
  68 wxShapeTextLine::~wxShapeTextLine()
  69 {
  70 }
  71
  72 IMPLEMENT_ABSTRACT_CLASS(wxShapeEvtHandler, wxObject)
  73
  74 wxShapeEvtHandler::wxShapeEvtHandler(wxShapeEvtHandler *prev, wxShape *shape)
  75 {
  76   m_previousHandler = prev;
  77   m_handlerShape = shape;
  78 }
  79
  80 wxShapeEvtHandler::~wxShapeEvtHandler()
  81 {
  82 }
  83
  84 // Creates a copy of this event handler.
  85 wxShapeEvtHandler* wxShapeEvtHandler::CreateNewCopy()
  86 {
  87   wxShapeEvtHandler* newObject = (wxShapeEvtHandler*) GetClassInfo()->CreateObject();
  88
  89   wxASSERT( (newObject != NULL) );
  90   wxASSERT( (newObject->IsKindOf(CLASSINFO(wxShapeEvtHandler))) );
  91
  92   newObject->m_previousHandler = newObject;
  93
  94   CopyData(*newObject);
  95
  96   return newObject;
  97 }
  98
  99
 100 void wxShapeEvtHandler::OnDelete()
 101 {
 102   if (this != GetShape())
 103     delete this;
 104 }
 105
 106 void wxShapeEvtHandler::OnDraw(wxDC& dc)
 107 {
 108   if (m_previousHandler)
 109     m_previousHandler->OnDraw(dc);
 110 }
 111
 112 void wxShapeEvtHandler::OnMoveLinks(wxDC& dc)
 113 {
 114   if (m_previousHandler)
 115     m_previousHandler->OnMoveLinks(dc);
 116 }
 117
 118 void wxShapeEvtHandler::OnMoveLink(wxDC& dc, bool moveControlPoints)
 119 {
 120   if (m_previousHandler)
 121     m_previousHandler->OnMoveLink(dc, moveControlPoints);
 122 }
 123
 124 void wxShapeEvtHandler::OnDrawContents(wxDC& dc)
 125 {
 126   if (m_previousHandler)
 127     m_previousHandler->OnDrawContents(dc);
 128 }
 129
 130 void wxShapeEvtHandler::OnSize(double x, double y)
 131 {
 132   if (m_previousHandler)
 133     m_previousHandler->OnSize(x, y);
 134 }
 135
 136 bool wxShapeEvtHandler::OnMovePre(wxDC& dc, double x, double y, double old_x, double old_y, bool display)
 137 {
 138   if (m_previousHandler)
 139     return m_previousHandler->OnMovePre(dc, x, y, old_x, old_y, display);
 140   else
 141     return TRUE;
 142 }
 143
 144 void wxShapeEvtHandler::OnMovePost(wxDC& dc, double x, double y, double old_x, double old_y, bool display)
 145 {
 146   if (m_previousHandler)
 147     m_previousHandler->OnMovePost(dc, x, y, old_x, old_y, display);
 148 }
 149
 150 void wxShapeEvtHandler::OnErase(wxDC& dc)
 151 {
 152   if (m_previousHandler)
 153     m_previousHandler->OnErase(dc);
 154 }
 155
 156 void wxShapeEvtHandler::OnEraseContents(wxDC& dc)
 157 {
 158   if (m_previousHandler)
 159     m_previousHandler->OnEraseContents(dc);
 160 }
 161
 162 void wxShapeEvtHandler::OnHighlight(wxDC& dc)
 163 {
 164   if (m_previousHandler)
 165     m_previousHandler->OnHighlight(dc);
 166 }
 167
 168 void wxShapeEvtHandler::OnLeftClick(double x, double y, int keys, int attachment)
 169 {
 170   if (m_previousHandler)
 171     m_previousHandler->OnLeftClick(x, y, keys, attachment);
 172 }
 173
 174 void wxShapeEvtHandler::OnRightClick(double x, double y, int keys, int attachment)
 175 {
 176   if (m_previousHandler)
 177     m_previousHandler->OnRightClick(x, y, keys, attachment);
 178 }
 179
 180 void wxShapeEvtHandler::OnDragLeft(bool draw, double x, double y, int keys, int attachment)
 181 {
 182   if (m_previousHandler)
 183     m_previousHandler->OnDragLeft(draw, x, y, keys, attachment);
 184 }
 185
 186 void wxShapeEvtHandler::OnBeginDragLeft(double x, double y, int keys, int attachment)
 187 {
 188   if (m_previousHandler)
 189     m_previousHandler->OnBeginDragLeft(x, y, keys, attachment);
 190 }
 191
 192 void wxShapeEvtHandler::OnEndDragLeft(double x, double y, int keys, int attachment)
 193 {
 194   if (m_previousHandler)
 195     m_previousHandler->OnEndDragLeft(x, y, keys, attachment);
 196 }
 197
 198 void wxShapeEvtHandler::OnDragRight(bool draw, double x, double y, int keys, int attachment)
 199 {
 200   if (m_previousHandler)
 201     m_previousHandler->OnDragRight(draw, x, y, keys, attachment);
 202 }
 203
 204 void wxShapeEvtHandler::OnBeginDragRight(double x, double y, int keys, int attachment)
 205 {
 206   if (m_previousHandler)
 207     m_previousHandler->OnBeginDragRight(x, y, keys, attachment);
 208 }
 209
 210 void wxShapeEvtHandler::OnEndDragRight(double x, double y, int keys, int attachment)
 211 {
 212   if (m_previousHandler)
 213     m_previousHandler->OnEndDragRight(x, y, keys, attachment);
 214 }
 215
 216 // Control points ('handles') redirect control to the actual shape, to make it easier
 217 // to override sizing behaviour.
 218 void wxShapeEvtHandler::OnSizingDragLeft(wxControlPoint* pt, bool draw, double x, double y, int keys, int attachment)
 219 {
 220   if (m_previousHandler)
 221     m_previousHandler->OnSizingDragLeft(pt, draw, x, y, keys, attachment);
 222 }
 223
 224 void wxShapeEvtHandler::OnSizingBeginDragLeft(wxControlPoint* pt, double x, double y, int keys, int attachment)
 225 {
 226   if (m_previousHandler)
 227     m_previousHandler->OnSizingBeginDragLeft(pt, x, y, keys, attachment);
 228 }
 229
 230 void wxShapeEvtHandler::OnSizingEndDragLeft(wxControlPoint* pt, double x, double y, int keys, int attachment)
 231 {
 232   if (m_previousHandler)
 233     m_previousHandler->OnSizingEndDragLeft(pt, x, y, keys, attachment);
 234 }
 235
 236 void wxShapeEvtHandler::OnDrawOutline(wxDC& dc, double x, double y, double w, double h)
 237 {
 238   if (m_previousHandler)
 239     m_previousHandler->OnDrawOutline(dc, x, y, w, h);
 240 }
 241
 242 void wxShapeEvtHandler::OnDrawControlPoints(wxDC& dc)
 243 {
 244   if (m_previousHandler)
 245     m_previousHandler->OnDrawControlPoints(dc);
 246 }
 247
 248 void wxShapeEvtHandler::OnEraseControlPoints(wxDC& dc)
 249 {
 250   if (m_previousHandler)
 251     m_previousHandler->OnEraseControlPoints(dc);
 252 }
 253
 254 // Can override this to prevent or intercept line reordering.
 255 void wxShapeEvtHandler::OnChangeAttachment(int attachment, wxLineShape* line, wxList& ordering)
 256 {
 257   if (m_previousHandler)
 258     m_previousHandler->OnChangeAttachment(attachment, line, ordering);
 259 }
 260
 261 IMPLEMENT_ABSTRACT_CLASS(wxShape, wxShapeEvtHandler)
 262
 263 wxShape::wxShape(wxShapeCanvas *can)
 264 {
 265   m_eventHandler = this;
 266   SetShape(this);
 267   m_id = 0;
 268   m_formatted = FALSE;
 269   m_canvas = can;
 270   m_xpos = 0.0; m_ypos = 0.0;
 271   m_pen = g_oglBlackPen;
 272   m_brush = wxWHITE_BRUSH;
 273   m_font = g_oglNormalFont;
 274   m_textColour = wxBLACK;
 275   m_textColourName = "BLACK";
 276   m_visible = FALSE;
 277   m_clientData = NULL;
 278   m_selected = FALSE;
 279   m_attachmentMode = FALSE;
 280   m_spaceAttachments = TRUE;
 281   m_disableLabel = FALSE;
 282   m_fixedWidth = FALSE;
 283   m_fixedHeight = FALSE;
 284   m_drawHandles = TRUE;
 285   m_sensitivity = OP_ALL;
 286   m_draggable = TRUE;
 287   m_parent = NULL;
 288   m_formatMode = FORMAT_CENTRE_HORIZ | FORMAT_CENTRE_VERT;
 289   m_shadowMode = SHADOW_NONE;
 290   m_shadowOffsetX = 6.0;
 291   m_shadowOffsetY = 6.0;
 292   m_shadowBrush = wxBLACK_BRUSH;
 293   m_textMarginX = 5.0;
 294   m_textMarginY = 5.0;
 295   m_regionName = "0";
 296   m_centreResize = TRUE;
 297   m_highlighted = FALSE;
 298   m_rotation = 0.0;
 299
 300   // Set up a default region. Much of the above will be put into
 301   // the region eventually (the duplication is for compatibility)
 302   wxShapeRegion *region = new wxShapeRegion;
 303   m_regions.Append(region);
 304   region->SetName("0");
 305   region->SetFont(g_oglNormalFont);
 306   region->SetFormatMode(FORMAT_CENTRE_HORIZ | FORMAT_CENTRE_VERT);
 307   region->SetColour("BLACK");
 308 }
 309
 310 wxShape::~wxShape()
 311 {
 312   if (m_parent)
 313     m_parent->GetChildren().DeleteObject(this);
 314
 315   ClearText();
 316   ClearRegions();
 317   ClearAttachments();
 318
 319   if (m_canvas)
 320     m_canvas->RemoveShape(this);
 321
 322   GetEventHandler()->OnDelete();
 323 }
 324
 325 void wxShape::SetHighlight(bool hi, bool recurse)
 326 {
 327   m_highlighted = hi;
 328   if (recurse)
 329   {
 330     wxNode *node = m_children.First();
 331     while (node)
 332     {
 333       wxShape *child = (wxShape *)node->Data();
 334       child->SetHighlight(hi, recurse);
 335       node = node->Next();
 336     }
 337   }
 338 }
 339
 340 void wxShape::SetSensitivityFilter(int sens, bool recursive)
 341 {
 342   if (sens & OP_DRAG_LEFT)
 343     m_draggable = TRUE;
 344   else
 345     m_draggable = FALSE;
 346
 347   m_sensitivity = sens;
 348   if (recursive)
 349   {
 350     wxNode *node = m_children.First();
 351     while (node)
 352     {
 353       wxShape *obj = (wxShape *)node->Data();
 354       obj->SetSensitivityFilter(sens, TRUE);
 355       node = node->Next();
 356     }
 357   }
 358 }
 359
 360 void wxShape::SetDraggable(bool drag, bool recursive)
 361 {
 362   m_draggable = drag;
 363   if (m_draggable)
 364     m_sensitivity |= OP_DRAG_LEFT;
 365   else
 366     if (m_sensitivity & OP_DRAG_LEFT)
 367       m_sensitivity = m_sensitivity - OP_DRAG_LEFT;
 368
 369   if (recursive)
 370   {
 371     wxNode *node = m_children.First();
 372     while (node)
 373     {
 374       wxShape *obj = (wxShape *)node->Data();
 375       obj->SetDraggable(drag, TRUE);
 376       node = node->Next();
 377     }
 378   }
 379 }
 380
 381 void wxShape::SetDrawHandles(bool drawH)
 382 {
 383   m_drawHandles = drawH;
 384   wxNode *node = m_children.First();
 385   while (node)
 386   {
 387     wxShape *obj = (wxShape *)node->Data();
 388     obj->SetDrawHandles(drawH);
 389     node = node->Next();
 390   }
 391 }
 392
 393 void wxShape::SetShadowMode(int mode, bool redraw)
 394 {
 395   if (redraw && GetCanvas())
 396   {
 397     wxClientDC dc(GetCanvas());
 398     GetCanvas()->PrepareDC(dc);
 399     Erase(dc);
 400
 401     m_shadowMode = mode;
 402
 403     Draw(dc);
 404   }
 405   else
 406   {
 407     m_shadowMode = mode;
 408   }
 409 }
 410
 411 void wxShape::SetCanvas(wxShapeCanvas *theCanvas)
 412 {
 413   m_canvas = theCanvas;
 414   wxNode *node = m_children.First();
 415   while (node)
 416   {
 417     wxShape *child = (wxShape *)node->Data();
 418     child->SetCanvas(theCanvas);
 419     node = node->Next();
 420   }
 421 }
 422
 423 void wxShape::AddToCanvas(wxShapeCanvas *theCanvas, wxShape *addAfter)
 424 {
 425   theCanvas->AddShape(this, addAfter);
 426   wxNode *node = m_children.First();
 427   wxShape *lastImage = this;
 428   while (node)
 429   {
 430     wxShape *object = (wxShape *)node->Data();
 431     object->AddToCanvas(theCanvas, lastImage);
 432     lastImage = object;
 433
 434     node = node->Next();
 435   }
 436 }
 437
 438 // Insert at front of canvas
 439 void wxShape::InsertInCanvas(wxShapeCanvas *theCanvas)
 440 {
 441   theCanvas->InsertShape(this);
 442   wxNode *node = m_children.First();
 443   wxShape *lastImage = this;
 444   while (node)
 445   {
 446     wxShape *object = (wxShape *)node->Data();
 447     object->AddToCanvas(theCanvas, lastImage);
 448     lastImage = object;
 449
 450     node = node->Next();
 451   }
 452 }
 453
 454 void wxShape::RemoveFromCanvas(wxShapeCanvas *theCanvas)
 455 {
 456   if (Selected())
 457     Select(FALSE);
 458   theCanvas->RemoveShape(this);
 459   wxNode *node = m_children.First();
 460   while (node)
 461   {
 462     wxShape *object = (wxShape *)node->Data();
 463     object->RemoveFromCanvas(theCanvas);
 464
 465     node = node->Next();
 466   }
 467 }
 468
 469 void wxShape::ClearAttachments()
 470 {
 471   wxNode *node = m_attachmentPoints.First();
 472   while (node)
 473   {
 474     wxAttachmentPoint *point = (wxAttachmentPoint *)node->Data();
 475     delete point;
 476     node = node->Next();
 477   }
 478   m_attachmentPoints.Clear();
 479 }
 480
 481 void wxShape::ClearText(int regionId)
 482 {
 483   if (regionId == 0)
 484   {
 485     m_text.DeleteContents(TRUE);
 486     m_text.Clear();
 487     m_text.DeleteContents(FALSE);
 488   }
 489   wxNode *node = m_regions.Nth(regionId);
 490   if (!node)
 491     return;
 492   wxShapeRegion *region = (wxShapeRegion *)node->Data();
 493   region->ClearText();
 494 }
 495
 496 void wxShape::ClearRegions()
 497 {
 498   wxNode *node = m_regions.First();
 499   while (node)
 500   {
 501     wxShapeRegion *region = (wxShapeRegion *)node->Data();
 502     wxNode *next = node->Next();
 503     delete region;
 504     delete node;
 505     node = next;
 506   }
 507 }
 508
 509 void wxShape::AddRegion(wxShapeRegion *region)
 510 {
 511   m_regions.Append(region);
 512 }
 513
 514 void wxShape::SetDefaultRegionSize()
 515 {
 516   wxNode *node = m_regions.First();
 517   if (!node) return;
 518   wxShapeRegion *region = (wxShapeRegion *)node->Data();
 519   double w, h;
 520   GetBoundingBoxMin(&w, &h);
 521   region->SetSize(w, h);
 522 }
 523
 524 bool wxShape::HitTest(double x, double y, int *attachment, double *distance)
 525 {
 526 //  if (!sensitive)
 527 //    return FALSE;
 528
 529   double width = 0.0, height = 0.0;
 530   GetBoundingBoxMin(&width, &height);
 531   if (fabs(width) < 4.0) width = 4.0;
 532   if (fabs(height) < 4.0) height = 4.0;
 533
 534   width += (double)4.0; height += (double)4.0; // Allowance for inaccurate mousing
 535
 536   double left = (double)(m_xpos - (width/2.0));
 537   double top = (double)(m_ypos - (height/2.0));
 538   double right = (double)(m_xpos + (width/2.0));
 539   double bottom = (double)(m_ypos + (height/2.0));
 540
 541   int nearest_attachment = 0;
 542
 543
 544   // If within the bounding box, check the attachment points
 545   // within the object.
 546
 547   if (x >= left && x <= right && y >= top && y <= bottom)
 548   {
 549     int n = GetNumberOfAttachments();
 550     double nearest = 999999.0;
 551
 552     for (int i = 0; i < n; i++)
 553     {
 554       double xp, yp;
 555       if (GetAttachmentPosition(i, &xp, &yp))
 556       {
 557         double l = (double)sqrt(((xp - x) * (xp - x)) +
 558                    ((yp - y) * (yp - y)));
 559
 560         if (l < nearest)
 561         {
 562           nearest = l;
 563           nearest_attachment = i;
 564         }
 565       }
 566     }
 567     *attachment = nearest_attachment;
 568     *distance = nearest;
 569     return TRUE;
 570   }
 571   else return FALSE;
 572 }
 573
 574 // Format a text string according to the region size, adding
 575 // strings with positions to region text list
 576
 577 static bool GraphicsInSizeToContents = FALSE; // Infinite recursion elimination
 578 void wxShape::FormatText(wxDC& dc, const wxString& s, int i)
 579 {
 580   double w, h;
 581   ClearText(i);
 582
 583   if (m_regions.Number() < 1)
 584     return;
 585   wxNode *node = m_regions.Nth(i);
 586   if (!node)
 587     return;
 588
 589   wxShapeRegion *region = (wxShapeRegion *)node->Data();
 590   region->SetText(s);
 591   dc.SetFont(region->GetFont());
 592
 593   region->GetSize(&w, &h);
 594
 595   wxStringList *stringList = oglFormatText(dc, s, (w-5), (h-5), region->GetFormatMode());
 596   node = stringList->First();
 597   while (node)
 598   {
 599     char *s = (char *)node->Data();
 600     wxShapeTextLine *line = new wxShapeTextLine(0.0, 0.0, s);
 601     region->GetFormattedText().Append((wxObject *)line);
 602     node = node->Next();
 603   }
 604   delete stringList;
 605   double actualW = w;
 606   double actualH = h;
 607   // Don't try to resize an object with more than one image (this case should be dealt
 608   // with by overriden handlers)
 609   if ((region->GetFormatMode() & FORMAT_SIZE_TO_CONTENTS) &&
 610       (region->GetFormattedText().Number() > 0) &&
 611       (m_regions.Number() == 1) && !GraphicsInSizeToContents)
 612   {
 613     oglGetCentredTextExtent(dc, &(region->GetFormattedText()), m_xpos, m_ypos, w, h, &actualW, &actualH);
 614     if ((actualW+m_textMarginX != w ) || (actualH+m_textMarginY != h))
 615     {
 616       // If we are a descendant of a composite, must make sure the composite gets
 617       // resized properly
 618       wxShape *topAncestor = GetTopAncestor();
 619
 620       if (topAncestor != this)
 621       {
 622         // Make sure we don't recurse infinitely
 623         GraphicsInSizeToContents = TRUE;
 624
 625         wxCompositeShape *composite = (wxCompositeShape *)topAncestor;
 626         composite->Erase(dc);
 627         SetSize(actualW+m_textMarginX, actualH+m_textMarginY);
 628         Move(dc, m_xpos, m_ypos);
 629         composite->CalculateSize();
 630         if (composite->Selected())
 631         {
 632           composite->DeleteControlPoints(& dc);
 633           composite->MakeControlPoints();
 634           composite->MakeMandatoryControlPoints();
 635         }
 636         // Where infinite recursion might happen if we didn't stop it
 637         composite->Draw(dc);
 638
 639         GraphicsInSizeToContents = FALSE;
 640       }
 641       else
 642       {
 643         Erase(dc);
 644         SetSize(actualW+m_textMarginX, actualH+m_textMarginY);
 645         Move(dc, m_xpos, m_ypos);
 646       }
 647       SetSize(actualW+m_textMarginX, actualH+m_textMarginY);
 648       Move(dc, m_xpos, m_ypos);
 649       EraseContents(dc);
 650     }
 651   }
 652   oglCentreText(dc, &(region->GetFormattedText()), m_xpos, m_ypos, actualW, actualH, region->GetFormatMode());
 653   m_formatted = TRUE;
 654 }
 655
 656 void wxShape::Recentre(wxDC& dc)
 657 {
 658   double w, h;
 659   GetBoundingBoxMin(&w, &h);
 660
 661   int noRegions = m_regions.Number();
 662   for (int i = 0; i < noRegions; i++)
 663   {
 664     wxNode *node = m_regions.Nth(i);
 665     if (node)
 666     {
 667       wxShapeRegion *region = (wxShapeRegion *)node->Data();
 668       oglCentreText(dc, &(region->GetFormattedText()), m_xpos, m_ypos, w, h, region->GetFormatMode());
 669     }
 670   }
 671 }
 672
 673 bool wxShape::GetPerimeterPoint(double x1, double y1,
 674                                      double x2, double y2,
 675                                      double *x3, double *y3)
 676 {
 677   return FALSE;
 678 }
 679
 680 void wxShape::SetPen(wxPen *the_pen)
 681 {
 682   m_pen = the_pen;
 683 }
 684
 685 void wxShape::SetBrush(wxBrush *the_brush)
 686 {
 687   m_brush = the_brush;
 688 }
 689
 690 // Get the top-most (non-division) ancestor, or self
 691 wxShape *wxShape::GetTopAncestor()
 692 {
 693   if (!GetParent())
 694     return this;
 695
 696   if (GetParent()->IsKindOf(CLASSINFO(wxDivisionShape)))
 697     return this;
 698   else return GetParent()->GetTopAncestor();
 699 }
 700
 701 /*
 702  * Region functions
 703  *
 704  */
 705 void wxShape::SetFont(wxFont *the_font, int regionId)
 706 {
 707   m_font = the_font;
 708   wxNode *node = m_regions.Nth(regionId);
 709   if (!node)
 710     return;
 711   wxShapeRegion *region = (wxShapeRegion *)node->Data();
 712   region->SetFont(the_font);
 713 }
 714
 715 wxFont *wxShape::GetFont(int n) const
 716 {
 717   wxNode *node = m_regions.Nth(n);
 718   if (!node)
 719     return NULL;
 720   wxShapeRegion *region = (wxShapeRegion *)node->Data();
 721   return region->GetFont();
 722 }
 723
 724 void wxShape::SetFormatMode(int mode, int regionId)
 725 {
 726   wxNode *node = m_regions.Nth(regionId);
 727   if (!node)
 728     return;
 729   wxShapeRegion *region = (wxShapeRegion *)node->Data();
 730   region->SetFormatMode(mode);
 731 }
 732
 733 int wxShape::GetFormatMode(int regionId) const
 734 {
 735   wxNode *node = m_regions.Nth(regionId);
 736   if (!node)
 737     return 0;
 738   wxShapeRegion *region = (wxShapeRegion *)node->Data();
 739   return region->GetFormatMode();
 740 }
 741
 742 void wxShape::SetTextColour(const wxString& the_colour, int regionId)
 743 {
 744   wxColour *wxcolour = wxTheColourDatabase->FindColour(the_colour);
 745   m_textColour = wxcolour;
 746   m_textColourName = the_colour;
 747
 748   wxNode *node = m_regions.Nth(regionId);
 749   if (!node)
 750     return;
 751   wxShapeRegion *region = (wxShapeRegion *)node->Data();
 752   region->SetColour(the_colour);
 753 }
 754
 755 wxString wxShape::GetTextColour(int regionId) const
 756 {
 757   wxNode *node = m_regions.Nth(regionId);
 758   if (!node)
 759     return wxString("");
 760   wxShapeRegion *region = (wxShapeRegion *)node->Data();
 761   return region->GetColour();
 762 }
 763
 764 void wxShape::SetRegionName(const wxString& name, int regionId)
 765 {
 766   wxNode *node = m_regions.Nth(regionId);
 767   if (!node)
 768     return;
 769   wxShapeRegion *region = (wxShapeRegion *)node->Data();
 770   region->SetName(name);
 771 }
 772
 773 wxString wxShape::GetRegionName(int regionId)
 774 {
 775   wxNode *node = m_regions.Nth(regionId);
 776   if (!node)
 777     return wxString("");
 778   wxShapeRegion *region = (wxShapeRegion *)node->Data();
 779   return region->GetName();
 780 }
 781
 782 int wxShape::GetRegionId(const wxString& name)
 783 {
 784   wxNode *node = m_regions.First();
 785   int i = 0;
 786   while (node)
 787   {
 788     wxShapeRegion *region = (wxShapeRegion *)node->Data();
 789     if (region->GetName() == name)
 790       return i;
 791     node = node->Next();
 792     i ++;
 793   }
 794   return -1;
 795 }
 796
 797 // Name all m_regions in all subimages recursively.
 798 void wxShape::NameRegions(const wxString& parentName)
 799 {
 800   int n = GetNumberOfTextRegions();
 801   char buf[100];
 802   for (int i = 0; i < n; i++)
 803   {
 804     if (parentName.Length() > 0)
 805       sprintf(buf, "%s.%d", (const char*) parentName, i);
 806     else
 807       sprintf(buf, "%d", i);
 808     SetRegionName(buf, i);
 809   }
 810   wxNode *node = m_children.First();
 811   int j = 0;
 812   while (node)
 813   {
 814     wxShape *child = (wxShape *)node->Data();
 815     if (parentName.Length() > 0)
 816       sprintf(buf, "%s.%d", (const char*) parentName, j);
 817     else
 818       sprintf(buf, "%d", j);
 819     child->NameRegions(buf);
 820     node = node->Next();
 821     j ++;
 822   }
 823 }
 824
 825 // Get a region by name, possibly looking recursively into composites.
 826 wxShape *wxShape::FindRegion(const wxString& name, int *regionId)
 827 {
 828   int id = GetRegionId(name);
 829   if (id > -1)
 830   {
 831     *regionId = id;
 832     return this;
 833   }
 834
 835   wxNode *node = m_children.First();
 836   while (node)
 837   {
 838     wxShape *child = (wxShape *)node->Data();
 839     wxShape *actualImage = child->FindRegion(name, regionId);
 840     if (actualImage)
 841       return actualImage;
 842     node = node->Next();
 843   }
 844   return NULL;
 845 }
 846
 847 // Finds all region names for this image (composite or simple).
 848 // Supply empty string list.
 849 void wxShape::FindRegionNames(wxStringList& list)
 850 {
 851   int n = GetNumberOfTextRegions();
 852   for (int i = 0; i < n; i++)
 853   {
 854     wxString name(GetRegionName(i));
 855     list.Add((const char*) name);
 856   }
 857
 858   wxNode *node = m_children.First();
 859   while (node)
 860   {
 861     wxShape *child = (wxShape *)node->Data();
 862     child->FindRegionNames(list);
 863     node = node->Next();
 864   }
 865 }
 866
 867 void wxShape::AssignNewIds()
 868 {
 869 //  if (m_id == 0)
 870   m_id = NewId();
 871   wxNode *node = m_children.First();
 872   while (node)
 873   {
 874     wxShape *child = (wxShape *)node->Data();
 875     child->AssignNewIds();
 876     node = node->Next();
 877   }
 878 }
 879
 880 void wxShape::OnDraw(wxDC& dc)
 881 {
 882 }
 883
 884 void wxShape::OnMoveLinks(wxDC& dc)
 885 {
 886   // Want to set the ends of all attached links
 887   // to point to/from this object
 888
 889   wxNode *current = m_lines.First();
 890   while (current)
 891   {
 892     wxLineShape *line = (wxLineShape *)current->Data();
 893     line->GetEventHandler()->OnMoveLink(dc);
 894     current = current->Next();
 895   }
 896 }
 897
 898
 899 void wxShape::OnDrawContents(wxDC& dc)
 900 {
 901   double bound_x, bound_y;
 902   GetBoundingBoxMin(&bound_x, &bound_y);
 903     if (m_regions.Number() < 1) return;
 904
 905     if (m_pen) dc.SetPen(m_pen);
 906
 907     wxShapeRegion *region = (wxShapeRegion *)m_regions.First()->Data();
 908     if (region->GetFont()) dc.SetFont(region->GetFont());
 909
 910     dc.SetTextForeground(* (region->GetActualColourObject()));
 911     dc.SetBackgroundMode(wxTRANSPARENT);
 912     if (!m_formatted)
 913     {
 914       oglCentreText(dc, &(region->GetFormattedText()), m_xpos, m_ypos, bound_x, bound_y, region->GetFormatMode());
 915       m_formatted = TRUE;
 916     }
 917     if (!GetDisableLabel())
 918     {
 919       oglDrawFormattedText(dc, &(region->GetFormattedText()), m_xpos, m_ypos, bound_x, bound_y, region->GetFormatMode());
 920     }
 921 }
 922
 923 void wxShape::DrawContents(wxDC& dc)
 924 {
 925   GetEventHandler()->OnDrawContents(dc);
 926 }
 927
 928 void wxShape::OnSize(double x, double y)
 929 {
 930 }
 931
 932 bool wxShape::OnMovePre(wxDC& dc, double x, double y, double old_x, double old_y, bool display)
 933 {
 934   return TRUE;
 935 }
 936
 937 void wxShape::OnMovePost(wxDC& dc, double x, double y, double old_x, double old_y, bool display)
 938 {
 939 }
 940
 941 void wxShape::OnErase(wxDC& dc)
 942 {
 943   if (!m_visible)
 944     return;
 945
 946   // Erase links
 947   wxNode *current = m_lines.First();
 948   while (current)
 949   {
 950     wxLineShape *line = (wxLineShape *)current->Data();
 951     line->GetEventHandler()->OnErase(dc);
 952     current = current->Next();
 953   }
 954   GetEventHandler()->OnEraseContents(dc);
 955 }
 956
 957 void wxShape::OnEraseContents(wxDC& dc)
 958 {
 959   if (!m_visible)
 960     return;
 961
 962   double maxX, maxY, minX, minY;
 963   double xp = GetX();
 964   double yp = GetY();
 965   GetBoundingBoxMin(&minX, &minY);
 966   GetBoundingBoxMax(&maxX, &maxY);
 967   double topLeftX = (double)(xp - (maxX / 2.0) - 2.0);
 968   double topLeftY = (double)(yp - (maxY / 2.0) - 2.0);
 969
 970     int penWidth = 0;
 971     if (m_pen)
 972       penWidth = m_pen->GetWidth();
 973
 974     dc.SetPen(g_oglWhiteBackgroundPen);
 975     dc.SetBrush(g_oglWhiteBackgroundBrush);
 976     dc.DrawRectangle(WXROUND(topLeftX - penWidth), WXROUND(topLeftY - penWidth),
 977                       WXROUND(maxX + penWidth*2.0 + 4.0), WXROUND(maxY + penWidth*2.0 + 4.0));
 978 }
 979
 980 void wxShape::EraseLinks(wxDC& dc, int attachment, bool recurse)
 981 {
 982   if (!m_visible)
 983     return;
 984
 985   wxNode *current = m_lines.First();
 986   while (current)
 987   {
 988     wxLineShape *line = (wxLineShape *)current->Data();
 989     if (attachment == -1 || ((line->GetTo() == this && line->GetAttachmentTo() == attachment) ||
 990                              (line->GetFrom() == this && line->GetAttachmentFrom() == attachment)))
 991       line->GetEventHandler()->OnErase(dc);
 992     current = current->Next();
 993   }
 994   if (recurse)
 995   {
 996     wxNode *node = m_children.First();
 997     while (node)
 998     {
 999       wxShape *child = (wxShape *)node->Data();
1000       child->EraseLinks(dc, attachment, recurse);
1001       node = node->Next();
1002     }
1003   }
1004 }
1005
1006 void wxShape::DrawLinks(wxDC& dc, int attachment, bool recurse)
1007 {
1008   if (!m_visible)
1009     return;
1010
1011   wxNode *current = m_lines.First();
1012   while (current)
1013   {
1014     wxLineShape *line = (wxLineShape *)current->Data();
1015     if (attachment == -1 ||
1016         (line->GetTo() == this && line->GetAttachmentTo() == attachment) ||
1017         (line->GetFrom() == this && line->GetAttachmentFrom() == attachment))
1018       line->Draw(dc);
1019     current = current->Next();
1020   }
1021   if (recurse)
1022   {
1023     wxNode *node = m_children.First();
1024     while (node)
1025     {
1026       wxShape *child = (wxShape *)node->Data();
1027       child->DrawLinks(dc, attachment, recurse);
1028       node = node->Next();
1029     }
1030   }
1031 }
1032
1033 // Returns TRUE if pt1 <= pt2 in the sense that one point comes before another on an
1034 // edge of the shape.
1035 // attachmentPoint is the attachment point (= side) in question.
1036
1037 // This is the default, rectangular implementation.
1038 bool wxShape::AttachmentSortTest(int attachmentPoint, const wxRealPoint& pt1, const wxRealPoint& pt2)
1039 {
1040     switch (attachmentPoint)
1041     {
1042         case 0:
1043         case 2:
1044         {
1045           return (pt1.x <= pt2.x) ;
1046           break;
1047         }
1048         case 1:
1049         case 3:
1050         {
1051           return (pt1.y <= pt2.y) ;
1052           break;
1053         }
1054     }
1055
1056     return FALSE;
1057 }
1058
1059 bool wxShape::MoveLineToNewAttachment(wxDC& dc, wxLineShape *to_move,
1060                                        double x, double y)
1061 {
1062   if (!GetAttachmentMode())
1063       return FALSE;
1064
1065   int newAttachment, oldAttachment;
1066   double distance;
1067
1068   // Is (x, y) on this object? If so, find the new attachment point
1069   // the user has moved the point to
1070   bool hit = HitTest(x, y, &newAttachment, &distance);
1071   if (!hit)
1072     return FALSE;
1073
1074   EraseLinks(dc);
1075
1076   if (to_move->GetTo() == this)
1077     oldAttachment = to_move->GetAttachmentTo();
1078   else
1079     oldAttachment = to_move->GetAttachmentFrom();
1080
1081   // The links in a new ordering.
1082   wxList newOrdering;
1083
1084   // First, add all links to the new list.
1085   wxNode *node = m_lines.First();
1086   while (node)
1087   {
1088     newOrdering.Append(node->Data());
1089     node = node->Next();
1090   }
1091
1092   // Delete the line object from the list of links; we're going to move
1093   // it to another position in the list
1094   newOrdering.DeleteObject(to_move);
1095
1096   double old_x = (double) -99999.9;
1097   double old_y = (double) -99999.9;
1098
1099   node = newOrdering.First();
1100   bool found = FALSE;
1101
1102   while (!found && node)
1103   {
1104     wxLineShape *line = (wxLineShape *)node->Data();
1105     if ((line->GetTo() == this && oldAttachment == line->GetAttachmentTo()) ||
1106         (line->GetFrom() == this && oldAttachment == line->GetAttachmentFrom()))
1107     {
1108       double startX, startY, endX, endY;
1109       double xp, yp;
1110       line->GetEnds(&startX, &startY, &endX, &endY);
1111       if (line->GetTo() == this)
1112       {
1113         xp = endX;
1114         yp = endY;
1115       } else
1116       {
1117         xp = startX;
1118         yp = startY;
1119       }
1120
1121       wxRealPoint thisPoint(xp, yp);
1122       wxRealPoint lastPoint(old_x, old_y);
1123       wxRealPoint newPoint(x, y);
1124
1125       if (AttachmentSortTest(newAttachment, newPoint, thisPoint) && AttachmentSortTest(newAttachment, lastPoint, newPoint))
1126       {
1127         found = TRUE;
1128         newOrdering.Insert(node, to_move);
1129       }
1130
1131       old_x = xp;
1132       old_y = yp;
1133     }
1134     node = node->Next();
1135   }
1136
1137   if (!found)
1138     newOrdering.Append(to_move);
1139
1140   GetEventHandler()->OnChangeAttachment(newAttachment, to_move, newOrdering);
1141
1142   return TRUE;
1143 }
1144
1145 void wxShape::OnChangeAttachment(int attachment, wxLineShape* line, wxList& ordering)
1146 {
1147     if (line->GetTo() == this)
1148         line->SetAttachmentTo(attachment);
1149     else
1150         line->SetAttachmentFrom(attachment);
1151
1152     ApplyAttachmentOrdering(ordering);
1153
1154     wxClientDC dc(GetCanvas());
1155     GetCanvas()->PrepareDC(dc);
1156
1157     MoveLinks(dc);
1158
1159     if (!GetCanvas()->GetQuickEditMode()) GetCanvas()->Redraw(dc);
1160 }
1161
1162 // Reorders the lines according to the given list.
1163 void wxShape::ApplyAttachmentOrdering(wxList& linesToSort)
1164 {
1165   // This is a temporary store of all the lines.
1166   wxList linesStore;
1167
1168   wxNode *node = m_lines.First();
1169   while (node)
1170   {
1171     wxLineShape *line = (wxLineShape *)node->Data();
1172     linesStore.Append(line);
1173     node = node->Next();;
1174   }
1175
1176   m_lines.Clear();
1177
1178   node = linesToSort.First();
1179   while (node)
1180   {
1181     wxLineShape *line = (wxLineShape *)node->Data();
1182     if (linesStore.Member(line))
1183     {
1184       // Done this one
1185       linesStore.DeleteObject(line);
1186       m_lines.Append(line);
1187     }
1188     node = node->Next();
1189   }
1190
1191   // Now add any lines that haven't been listed in linesToSort.
1192   node = linesStore.First();
1193   while (node)
1194   {
1195     wxLineShape *line = (wxLineShape *)node->Data();
1196     m_lines.Append(line);
1197     node = node->Next();
1198   }
1199 }
1200
1201 // Reorders the lines coming into the node image at this attachment
1202 // position, in the order in which they appear in linesToSort.
1203 // Any remaining lines not in the list will be added to the end.
1204 void wxShape::SortLines(int attachment, wxList& linesToSort)
1205 {
1206   // This is a temporary store of all the lines at this attachment
1207   // point. We'll tick them off as we've processed them.
1208   wxList linesAtThisAttachment;
1209
1210   wxNode *node = m_lines.First();
1211   while (node)
1212   {
1213     wxLineShape *line = (wxLineShape *)node->Data();
1214     wxNode *next = node->Next();
1215     if ((line->GetTo() == this && line->GetAttachmentTo() == attachment) ||
1216         (line->GetFrom() == this && line->GetAttachmentFrom() == attachment))
1217     {
1218       linesAtThisAttachment.Append(line);
1219       delete node;
1220       node = next;
1221     }
1222     else node = node->Next();
1223   }
1224
1225   node = linesToSort.First();
1226   while (node)
1227   {
1228     wxLineShape *line = (wxLineShape *)node->Data();
1229     if (linesAtThisAttachment.Member(line))
1230     {
1231       // Done this one
1232       linesAtThisAttachment.DeleteObject(line);
1233       m_lines.Append(line);
1234     }
1235     node = node->Next();
1236   }
1237
1238   // Now add any lines that haven't been listed in linesToSort.
1239   node = linesAtThisAttachment.First();
1240   while (node)
1241   {
1242     wxLineShape *line = (wxLineShape *)node->Data();
1243     m_lines.Append(line);
1244     node = node->Next();
1245   }
1246 }
1247
1248 void wxShape::OnHighlight(wxDC& dc)
1249 {
1250 }
1251
1252 void wxShape::OnLeftClick(double x, double y, int keys, int attachment)
1253 {
1254   if ((m_sensitivity & OP_CLICK_LEFT) != OP_CLICK_LEFT)
1255   {
1256     attachment = 0;
1257     double dist;
1258     if (m_parent)
1259     {
1260       m_parent->HitTest(x, y, &attachment, &dist);
1261       m_parent->GetEventHandler()->OnLeftClick(x, y, keys, attachment);
1262     }
1263     return;
1264   }
1265 }
1266
1267 void wxShape::OnRightClick(double x, double y, int keys, int attachment)
1268 {
1269   if ((m_sensitivity & OP_CLICK_RIGHT) != OP_CLICK_RIGHT)
1270   {
1271     attachment = 0;
1272     double dist;
1273     if (m_parent)
1274     {
1275       m_parent->HitTest(x, y, &attachment, &dist);
1276       m_parent->GetEventHandler()->OnRightClick(x, y, keys, attachment);
1277     }
1278     return;
1279   }
1280 }
1281
1282 double DragOffsetX = 0.0;
1283 double DragOffsetY = 0.0;
1284
1285 void wxShape::OnDragLeft(bool draw, double x, double y, int keys, int attachment)
1286 {
1287   if ((m_sensitivity & OP_DRAG_LEFT) != OP_DRAG_LEFT)
1288   {
1289     attachment = 0;
1290     double dist;
1291     if (m_parent)
1292     {
1293       m_parent->HitTest(x, y, &attachment, &dist);
1294       m_parent->GetEventHandler()->OnDragLeft(draw, x, y, keys, attachment);
1295     }
1296     return;
1297   }
1298
1299   wxClientDC dc(GetCanvas());
1300   GetCanvas()->PrepareDC(dc);
1301
1302   dc.SetLogicalFunction(wxXOR);
1303
1304   wxPen dottedPen(wxColour(0, 0, 0), 1, wxDOT);
1305   dc.SetPen(dottedPen);
1306   dc.SetBrush(* wxTRANSPARENT_BRUSH);
1307
1308   double xx, yy;
1309   xx = x + DragOffsetX;
1310   yy = y + DragOffsetY;
1311
1312   m_canvas->Snap(&xx, &yy);
1313 //  m_xpos = xx; m_ypos = yy;
1314   double w, h;
1315   GetBoundingBoxMax(&w, &h);
1316   GetEventHandler()->OnDrawOutline(dc, xx, yy, w, h);
1317 }
1318
1319 void wxShape::OnBeginDragLeft(double x, double y, int keys, int attachment)
1320 {
1321   if ((m_sensitivity & OP_DRAG_LEFT) != OP_DRAG_LEFT)
1322   {
1323     attachment = 0;
1324     double dist;
1325     if (m_parent)
1326     {
1327       m_parent->HitTest(x, y, &attachment, &dist);
1328       m_parent->GetEventHandler()->OnBeginDragLeft(x, y, keys, attachment);
1329     }
1330     return;
1331   }
1332
1333   DragOffsetX = m_xpos - x;
1334   DragOffsetY = m_ypos - y;
1335
1336   wxClientDC dc(GetCanvas());
1337   GetCanvas()->PrepareDC(dc);
1338
1339   // New policy: don't erase shape until end of drag.
1340 //  Erase(dc);
1341
1342   double xx, yy;
1343   xx = x + DragOffsetX;
1344   yy = y + DragOffsetY;
1345   m_canvas->Snap(&xx, &yy);
1346 //  m_xpos = xx; m_ypos = yy;
1347   dc.SetLogicalFunction(wxXOR);
1348
1349   wxPen dottedPen(wxColour(0, 0, 0), 1, wxDOT);
1350   dc.SetPen(dottedPen);
1351   dc.SetBrush((* wxTRANSPARENT_BRUSH));
1352
1353   double w, h;
1354   GetBoundingBoxMax(&w, &h);
1355   GetEventHandler()->OnDrawOutline(dc, xx, yy, w, h);
1356   m_canvas->CaptureMouse();
1357 }
1358
1359 void wxShape::OnEndDragLeft(double x, double y, int keys, int attachment)
1360 {
1361   m_canvas->ReleaseMouse();
1362   if ((m_sensitivity & OP_DRAG_LEFT) != OP_DRAG_LEFT)
1363   {
1364     attachment = 0;
1365     double dist;
1366     if (m_parent)
1367     {
1368       m_parent->HitTest(x, y, &attachment, &dist);
1369       m_parent->GetEventHandler()->OnEndDragLeft(x, y, keys, attachment);
1370     }
1371     return;
1372   }
1373
1374   wxClientDC dc(GetCanvas());
1375   GetCanvas()->PrepareDC(dc);
1376
1377   dc.SetLogicalFunction(wxCOPY);
1378
1379   double xx = x + DragOffsetX;
1380   double yy = y + DragOffsetY;
1381   m_canvas->Snap(&xx, &yy);
1382 //  canvas->Snap(&m_xpos, &m_ypos);
1383
1384   // New policy: erase shape at end of drag.
1385   Erase(dc);
1386
1387   Move(dc, xx, yy);
1388   if (m_canvas && !m_canvas->GetQuickEditMode()) m_canvas->Redraw(dc);
1389 }
1390
1391 void wxShape::OnDragRight(bool draw, double x, double y, int keys, int attachment)
1392 {
1393   if ((m_sensitivity & OP_DRAG_RIGHT) != OP_DRAG_RIGHT)
1394   {
1395     attachment = 0;
1396     double dist;
1397     if (m_parent)
1398     {
1399       m_parent->HitTest(x, y, &attachment, &dist);
1400       m_parent->GetEventHandler()->OnDragRight(draw, x, y, keys, attachment);
1401     }
1402     return;
1403   }
1404 }
1405
1406 void wxShape::OnBeginDragRight(double x, double y, int keys, int attachment)
1407 {
1408   if ((m_sensitivity & OP_DRAG_RIGHT) != OP_DRAG_RIGHT)
1409   {
1410     attachment = 0;
1411     double dist;
1412     if (m_parent)
1413     {
1414       m_parent->HitTest(x, y, &attachment, &dist);
1415       m_parent->GetEventHandler()->OnBeginDragRight(x, y, keys, attachment);
1416     }
1417     return;
1418   }
1419 }
1420
1421 void wxShape::OnEndDragRight(double x, double y, int keys, int attachment)
1422 {
1423   if ((m_sensitivity & OP_DRAG_RIGHT) != OP_DRAG_RIGHT)
1424   {
1425     attachment = 0;
1426     double dist;
1427     if (m_parent)
1428     {
1429       m_parent->HitTest(x, y, &attachment, &dist);
1430       m_parent->GetEventHandler()->OnEndDragRight(x, y, keys, attachment);
1431     }
1432     return;
1433   }
1434 }
1435
1436 void wxShape::OnDrawOutline(wxDC& dc, double x, double y, double w, double h)
1437 {
1438   double top_left_x = (double)(x - w/2.0);
1439   double top_left_y = (double)(y - h/2.0);
1440   double top_right_x = (double)(top_left_x + w);
1441   double top_right_y = (double)top_left_y;
1442   double bottom_left_x = (double)top_left_x;
1443   double bottom_left_y = (double)(top_left_y + h);
1444   double bottom_right_x = (double)top_right_x;
1445   double bottom_right_y = (double)bottom_left_y;
1446
1447   wxPoint points[5];
1448   points[0].x = WXROUND(top_left_x); points[0].y = WXROUND(top_left_y);
1449   points[1].x = WXROUND(top_right_x); points[1].y = WXROUND(top_right_y);
1450   points[2].x = WXROUND(bottom_right_x); points[2].y = WXROUND(bottom_right_y);
1451   points[3].x = WXROUND(bottom_left_x); points[3].y = WXROUND(bottom_left_y);
1452   points[4].x = WXROUND(top_left_x); points[4].y = WXROUND(top_left_y);
1453
1454   dc.DrawLines(5, points);
1455 }
1456
1457 void wxShape::Attach(wxShapeCanvas *can)
1458 {
1459   m_canvas = can;
1460 }
1461
1462 void wxShape::Detach()
1463 {
1464   m_canvas = NULL;
1465 }
1466
1467 void wxShape::Move(wxDC& dc, double x, double y, bool display)
1468 {
1469   double old_x = m_xpos;
1470   double old_y = m_ypos;
1471
1472   if (!GetEventHandler()->OnMovePre(dc, x, y, old_x, old_y, display))
1473   {
1474 //    m_xpos = old_x;
1475 //    m_ypos = old_y;
1476     return;
1477   }
1478
1479   m_xpos = x; m_ypos = y;
1480
1481   ResetControlPoints();
1482
1483   if (display)
1484     Draw(dc);
1485
1486   MoveLinks(dc);
1487
1488   GetEventHandler()->OnMovePost(dc, x, y, old_x, old_y, display);
1489 }
1490
1491 void wxShape::MoveLinks(wxDC& dc)
1492 {
1493   GetEventHandler()->OnMoveLinks(dc);
1494 }
1495
1496
1497 void wxShape::Draw(wxDC& dc)
1498 {
1499   if (m_visible)
1500   {
1501     GetEventHandler()->OnDraw(dc);
1502     GetEventHandler()->OnDrawContents(dc);
1503     GetEventHandler()->OnDrawControlPoints(dc);
1504   }
1505 }
1506
1507 void wxShape::Flash()
1508 {
1509     if (GetCanvas())
1510     {
1511         wxClientDC dc(GetCanvas());
1512         GetCanvas()->PrepareDC(dc);
1513
1514         dc.SetLogicalFunction(wxXOR);
1515         Draw(dc);
1516         dc.SetLogicalFunction(wxCOPY);
1517         Draw(dc);
1518     }
1519 }
1520
1521 void wxShape::Show(bool show)
1522 {
1523   m_visible = show;
1524   wxNode *node = m_children.First();
1525   while (node)
1526   {
1527     wxShape *image = (wxShape *)node->Data();
1528     image->Show(show);
1529     node = node->Next();
1530   }
1531 }
1532
1533 void wxShape::Erase(wxDC& dc)
1534 {
1535   GetEventHandler()->OnErase(dc);
1536   GetEventHandler()->OnEraseControlPoints(dc);
1537 }
1538
1539 void wxShape::EraseContents(wxDC& dc)
1540 {
1541   GetEventHandler()->OnEraseContents(dc);
1542 }
1543
1544 void wxShape::AddText(const wxString& string)
1545 {
1546   wxNode *node = m_regions.First();
1547   if (!node)
1548     return;
1549   wxShapeRegion *region = (wxShapeRegion *)node->Data();
1550   region->ClearText();
1551   wxShapeTextLine *new_line =
1552       new wxShapeTextLine(0.0, 0.0, string);
1553   region->GetFormattedText().Append(new_line);
1554
1555   m_formatted = FALSE;
1556 }
1557
1558 void wxShape::SetSize(double x, double y, bool recursive)
1559 {
1560   SetAttachmentSize(x, y);
1561   SetDefaultRegionSize();
1562 }
1563
1564 void wxShape::SetAttachmentSize(double w, double h)
1565 {
1566   double scaleX;
1567   double scaleY;
1568   double width, height;
1569   GetBoundingBoxMin(&width, &height);
1570   if (width == 0.0)
1571     scaleX = 1.0;
1572   else scaleX = w/width;
1573   if (height == 0.0)
1574     scaleY = 1.0;
1575   else scaleY = h/height;
1576
1577   wxNode *node = m_attachmentPoints.First();
1578   while (node)
1579   {
1580     wxAttachmentPoint *point = (wxAttachmentPoint *)node->Data();
1581     point->m_x = (double)(point->m_x * scaleX);
1582     point->m_y = (double)(point->m_y * scaleY);
1583     node = node->Next();
1584   }
1585 }
1586
1587 // Add line FROM this object
1588 void wxShape::AddLine(wxLineShape *line, wxShape *other,
1589                             int attachFrom, int attachTo,
1590                             // The line ordering
1591                             int positionFrom, int positionTo)
1592 {
1593     m_lines.DeleteObject(line);
1594     other->m_lines.DeleteObject(line);
1595
1596     if (positionFrom == -1)
1597         m_lines.Append(line);
1598     else
1599     {
1600         if (positionFrom < m_lines.Number())
1601         {
1602             wxNode* node = m_lines.Nth(positionFrom);
1603             m_lines.Insert(node, line);
1604         }
1605         else
1606             m_lines.Append(line);
1607     }
1608
1609     if (positionTo == -1)
1610         other->m_lines.Append(line);
1611     else
1612     {
1613         if (positionTo < other->m_lines.Number())
1614         {
1615             wxNode* node = other->m_lines.Nth(positionTo);
1616             other->m_lines.Insert(node, line);
1617         }
1618         else
1619             other->m_lines.Append(line);
1620     }
1621
1622     line->SetFrom(this);
1623     line->SetTo(other);
1624     line->SetAttachments(attachFrom, attachTo);
1625 }
1626
1627 void wxShape::RemoveLine(wxLineShape *line)
1628 {
1629   if (line->GetFrom() == this)
1630     line->GetTo()->m_lines.DeleteObject(line);
1631   else
1632    line->GetFrom()->m_lines.DeleteObject(line);
1633
1634   m_lines.DeleteObject(line);
1635 }
1636
1637 #ifdef PROLOGIO
1638 void wxShape::WriteAttributes(wxExpr *clause)
1639 {
1640   clause->AddAttributeValueString("type", GetClassInfo()->GetClassName());
1641   clause->AddAttributeValue("id", m_id);
1642
1643   if (m_pen)
1644   {
1645     int penWidth = m_pen->GetWidth();
1646     int penStyle = m_pen->GetStyle();
1647     if (penWidth != 1)
1648       clause->AddAttributeValue("pen_width", (long)penWidth);
1649     if (penStyle != wxSOLID)
1650       clause->AddAttributeValue("pen_style", (long)penStyle);
1651
1652     wxString penColour = wxTheColourDatabase->FindName(m_pen->GetColour());
1653     if (penColour == "")
1654     {
1655       wxString hex(oglColourToHex(m_pen->GetColour()));
1656       hex = wxString("#") + hex;
1657       clause->AddAttributeValueString("pen_colour", hex);
1658     }
1659     else if (penColour != "BLACK")
1660       clause->AddAttributeValueString("pen_colour", penColour);
1661   }
1662
1663   if (m_brush)
1664   {
1665     wxString brushColour = wxTheColourDatabase->FindName(m_brush->GetColour());
1666
1667     if (brushColour == "")
1668     {
1669       wxString hex(oglColourToHex(m_brush->GetColour()));
1670       hex = wxString("#") + hex;
1671       clause->AddAttributeValueString("brush_colour", hex);
1672     }
1673     else if (brushColour != "WHITE")
1674       clause->AddAttributeValueString("brush_colour", brushColour);
1675
1676     if (m_brush->GetStyle() != wxSOLID)
1677       clause->AddAttributeValue("brush_style", (long)m_brush->GetStyle());
1678   }
1679
1680   // Output line ids
1681
1682   int n_lines = m_lines.Number();
1683   if (n_lines > 0)
1684   {
1685     wxExpr *list = new wxExpr(PrologList);
1686     wxNode *node = m_lines.First();
1687     while (node)
1688     {
1689       wxShape *line = (wxShape *)node->Data();
1690       wxExpr *id_expr = new wxExpr(line->GetId());
1691       list->Append(id_expr);
1692       node = node->Next();
1693     }
1694     clause->AddAttributeValue("arcs", list);
1695   }
1696
1697   // Miscellaneous members
1698   if (m_attachmentMode != 0)
1699     clause->AddAttributeValue("use_attachments", (long)m_attachmentMode);
1700   if (m_sensitivity != OP_ALL)
1701     clause->AddAttributeValue("sensitivity", (long)m_sensitivity);
1702   if (!m_spaceAttachments)
1703     clause->AddAttributeValue("space_attachments", (long)m_spaceAttachments);
1704   if (m_fixedWidth)
1705     clause->AddAttributeValue("fixed_width", (long)m_fixedWidth);
1706   if (m_fixedHeight)
1707     clause->AddAttributeValue("fixed_height", (long)m_fixedHeight);
1708   if (m_shadowMode != SHADOW_NONE)
1709     clause->AddAttributeValue("shadow_mode", (long)m_shadowMode);
1710   if (m_centreResize != TRUE)
1711     clause->AddAttributeValue("centre_resize", (long)0);
1712   if (m_highlighted != FALSE)
1713     clause->AddAttributeValue("hilite", (long)m_highlighted);
1714
1715   if (m_parent) // For composite objects
1716     clause->AddAttributeValue("parent", (long)m_parent->GetId());
1717
1718   if (m_rotation != 0.0)
1719     clause->AddAttributeValue("rotation", m_rotation);
1720
1721   // Write user-defined attachment points, if any
1722   if (m_attachmentPoints.Number() > 0)
1723   {
1724     wxExpr *attachmentList = new wxExpr(PrologList);
1725     wxNode *node = m_attachmentPoints.First();
1726     while (node)
1727     {
1728       wxAttachmentPoint *point = (wxAttachmentPoint *)node->Data();
1729       wxExpr *pointExpr = new wxExpr(PrologList);
1730       pointExpr->Append(new wxExpr((long)point->m_id));
1731       pointExpr->Append(new wxExpr(point->m_x));
1732       pointExpr->Append(new wxExpr(point->m_y));
1733       attachmentList->Append(pointExpr);
1734       node = node->Next();
1735     }
1736     clause->AddAttributeValue("user_attachments", attachmentList);
1737   }
1738
1739   // Write text regions
1740   WriteRegions(clause);
1741 }
1742
1743 void wxShape::WriteRegions(wxExpr *clause)
1744 {
1745   // Output regions as region1 = (...), region2 = (...), etc
1746   // and formatted text as text1 = (...), text2 = (...) etc.
1747   int regionNo = 1;
1748   char regionNameBuf[20];
1749   char textNameBuf[20];
1750   wxNode *node = m_regions.First();
1751   while (node)
1752   {
1753     wxShapeRegion *region = (wxShapeRegion *)node->Data();
1754     sprintf(regionNameBuf, "region%d", regionNo);
1755     sprintf(textNameBuf, "text%d", regionNo);
1756
1757     // Original text and region attributes:
1758     // region1 = (regionName regionText x y width height minWidth minHeight proportionX proportionY
1759     //            formatMode fontSize fontFamily fontStyle fontWeight textColour)
1760     wxExpr *regionExpr = new wxExpr(PrologList);
1761     regionExpr->Append(new wxExpr(PrologString, (region->m_regionName ? region->m_regionName : "")));
1762     regionExpr->Append(new wxExpr(PrologString, (region->m_regionText ? region->m_regionText : "")));
1763
1764     regionExpr->Append(new wxExpr(region->m_x));
1765     regionExpr->Append(new wxExpr(region->m_y));
1766     regionExpr->Append(new wxExpr(region->GetWidth()));
1767     regionExpr->Append(new wxExpr(region->GetHeight()));
1768
1769     regionExpr->Append(new wxExpr(region->m_minWidth));
1770     regionExpr->Append(new wxExpr(region->m_minHeight));
1771     regionExpr->Append(new wxExpr(region->m_regionProportionX));
1772     regionExpr->Append(new wxExpr(region->m_regionProportionY));
1773
1774     regionExpr->Append(new wxExpr((long)region->m_formatMode));
1775
1776     regionExpr->Append(new wxExpr((long)(region->m_font ? region->m_font->GetPointSize() : 10)));
1777     regionExpr->Append(new wxExpr((long)(region->m_font ? region->m_font->GetFamily() : wxDEFAULT)));
1778     regionExpr->Append(new wxExpr((long)(region->m_font ? region->m_font->GetStyle() : wxDEFAULT)));
1779     regionExpr->Append(new wxExpr((long)(region->m_font ? region->m_font->GetWeight() : wxNORMAL)));
1780     regionExpr->Append(new wxExpr(PrologString, region->m_textColour ? region->m_textColour : "BLACK"));
1781
1782     // New members for pen colour/style
1783     regionExpr->Append(new wxExpr(PrologString, region->m_penColour ? region->m_penColour : "BLACK"));
1784     regionExpr->Append(new wxExpr((long)region->m_penStyle));
1785
1786     // Formatted text:
1787     // text1 = ((x y string) (x y string) ...)
1788     wxExpr *textExpr = new wxExpr(PrologList);
1789
1790     wxNode *textNode = region->m_formattedText.First();
1791     while (textNode)
1792     {
1793       wxShapeTextLine *line = (wxShapeTextLine *)textNode->Data();
1794       wxExpr *list2 = new wxExpr(PrologList);
1795       list2->Append(new wxExpr(line->GetX()));
1796       list2->Append(new wxExpr(line->GetY()));
1797       list2->Append(new wxExpr(PrologString, line->GetText()));
1798       textExpr->Append(list2);
1799       textNode = textNode->Next();
1800     }
1801
1802     // Now add both attributes to the clause
1803     clause->AddAttributeValue(regionNameBuf, regionExpr);
1804     clause->AddAttributeValue(textNameBuf, textExpr);
1805
1806     node = node->Next();
1807     regionNo ++;
1808   }
1809 }
1810
1811 void wxShape::ReadAttributes(wxExpr *clause)
1812 {
1813   clause->GetAttributeValue("id", m_id);
1814   RegisterId(m_id);
1815
1816   clause->GetAttributeValue("x", m_xpos);
1817   clause->GetAttributeValue("y", m_ypos);
1818
1819   // Input text strings (FOR COMPATIBILITY WITH OLD FILES ONLY. SEE REGION CODE BELOW.)
1820   ClearText();
1821   wxExpr *strings = clause->AttributeValue("text");
1822   if (strings && strings->Type() == PrologList)
1823   {
1824     m_formatted = TRUE;  // Assume text is formatted unless we prove otherwise
1825     wxExpr *node = strings->value.first;
1826     while (node)
1827     {
1828       wxExpr *string_expr = node;
1829       double the_x = 0.0;
1830       double the_y = 0.0;
1831       wxString the_string("");
1832
1833       // string_expr can either be a string, or a list of
1834       // 3 elements: x, y, and string.
1835       if (string_expr->Type() == PrologString)
1836       {
1837         the_string = string_expr->StringValue();
1838         m_formatted = FALSE;
1839       }
1840       else if (string_expr->Type() == PrologList)
1841       {
1842         wxExpr *first = string_expr->value.first;
1843         wxExpr *second = first ? first->next : NULL;
1844         wxExpr *third = second ? second->next : NULL;
1845
1846         if (first && second && third &&
1847             (first->Type() == PrologReal || first->Type() == PrologInteger) &&
1848             (second->Type() == PrologReal || second->Type() == PrologInteger) &&
1849             third->Type() == PrologString)
1850           {
1851             if (first->Type() == PrologReal)
1852               the_x = first->RealValue();
1853             else the_x = (double)first->IntegerValue();
1854
1855             if (second->Type() == PrologReal)
1856               the_y = second->RealValue();
1857             else the_y = (double)second->IntegerValue();
1858
1859             the_string = third->StringValue();
1860           }
1861       }
1862       wxShapeTextLine *line =
1863             new wxShapeTextLine(the_x, the_y, (char*) (const char*) the_string);
1864       m_text.Append(line);
1865
1866       node = node->next;
1867     }
1868   }
1869
1870   wxString pen_string = "";
1871   wxString brush_string = "";
1872   int pen_width = 1;
1873   int pen_style = wxSOLID;
1874   int brush_style = wxSOLID;
1875   m_attachmentMode = FALSE;
1876
1877   clause->GetAttributeValue("pen_colour", pen_string);
1878   clause->GetAttributeValue("text_colour", m_textColourName);
1879
1880   SetTextColour(m_textColourName);
1881
1882   clause->GetAttributeValue("region_name", m_regionName);
1883
1884   clause->GetAttributeValue("brush_colour", brush_string);
1885   clause->GetAttributeValue("pen_width", pen_width);
1886   clause->GetAttributeValue("pen_style", pen_style);
1887   clause->GetAttributeValue("brush_style", brush_style);
1888
1889   int iVal = (int) m_attachmentMode;
1890   clause->GetAttributeValue("use_attachments", iVal);
1891   m_attachmentMode = (iVal != 0);
1892
1893   clause->GetAttributeValue("sensitivity", m_sensitivity);
1894
1895   iVal = (int) m_spaceAttachments;
1896   clause->GetAttributeValue("space_attachments", iVal);
1897   m_spaceAttachments = (iVal != 0);
1898
1899   iVal = (int) m_fixedWidth;
1900   clause->GetAttributeValue("fixed_width", iVal);
1901   m_fixedWidth = (iVal != 0);
1902
1903   iVal = (int) m_fixedHeight;
1904   clause->GetAttributeValue("fixed_height", iVal);
1905   m_fixedHeight = (iVal != 0);
1906
1907   clause->GetAttributeValue("format_mode", m_formatMode);
1908   clause->GetAttributeValue("shadow_mode", m_shadowMode);
1909
1910   iVal = (int) m_centreResize;
1911   clause->GetAttributeValue("centre_resize", iVal);
1912   m_centreResize = (iVal != 0);
1913
1914   iVal = (int) m_highlighted;
1915   clause->GetAttributeValue("hilite", iVal);
1916   m_highlighted = (iVal != 0);
1917
1918   clause->GetAttributeValue("rotation", m_rotation);
1919
1920   if (pen_string == "")
1921     pen_string = "BLACK";
1922   if (brush_string == "")
1923     brush_string = "WHITE";
1924
1925   if (pen_string[0] == '#')
1926   {
1927     wxColour col(oglHexToColour(pen_string.After('#')));
1928     m_pen = wxThePenList->FindOrCreatePen(col, pen_width, pen_style);
1929   }
1930   else
1931     m_pen = wxThePenList->FindOrCreatePen(pen_string, pen_width, pen_style);
1932
1933   if (!m_pen)
1934     m_pen = wxBLACK_PEN;
1935
1936   if (brush_string[0] == '#')
1937   {
1938     wxColour col(oglHexToColour(brush_string.After('#')));
1939     m_brush = wxTheBrushList->FindOrCreateBrush(col, brush_style);
1940   }
1941   else
1942     m_brush = wxTheBrushList->FindOrCreateBrush(brush_string, brush_style);
1943
1944   if (!m_brush)
1945     m_brush = wxWHITE_BRUSH;
1946
1947   int point_size = 10;
1948   clause->GetAttributeValue("point_size", point_size);
1949   SetFont(oglMatchFont(point_size));
1950
1951   // Read user-defined attachment points, if any
1952   wxExpr *attachmentList = clause->AttributeValue("user_attachments");
1953   if (attachmentList)
1954   {
1955     wxExpr *pointExpr = attachmentList->GetFirst();
1956     while (pointExpr)
1957     {
1958       wxExpr *idExpr = pointExpr->Nth(0);
1959       wxExpr *xExpr = pointExpr->Nth(1);
1960       wxExpr *yExpr = pointExpr->Nth(2);
1961       if (idExpr && xExpr && yExpr)
1962       {
1963         wxAttachmentPoint *point = new wxAttachmentPoint;
1964         point->m_id = (int)idExpr->IntegerValue();
1965         point->m_x = xExpr->RealValue();
1966         point->m_y = yExpr->RealValue();
1967         m_attachmentPoints.Append((wxObject *)point);
1968       }
1969       pointExpr = pointExpr->GetNext();
1970     }
1971   }
1972
1973   // Read text regions
1974   ReadRegions(clause);
1975 }
1976
1977 void wxShape::ReadRegions(wxExpr *clause)
1978 {
1979   ClearRegions();
1980
1981   // region1 = (regionName regionText x y width height minWidth minHeight proportionX proportionY
1982   //            formatMode fontSize fontFamily fontStyle fontWeight textColour)
1983   int regionNo = 1;
1984   char regionNameBuf[20];
1985   char textNameBuf[20];
1986
1987   wxExpr *regionExpr = NULL;
1988   wxExpr *textExpr = NULL;
1989   sprintf(regionNameBuf, "region%d", regionNo);
1990   sprintf(textNameBuf, "text%d", regionNo);
1991
1992   m_formatted = TRUE;  // Assume text is formatted unless we prove otherwise
1993
1994   while (regionExpr = clause->AttributeValue(regionNameBuf))
1995   {
1996     /*
1997      * Get the region information
1998      *
1999      */
2000
2001     wxString regionName("");
2002     wxString regionText("");
2003     double x = 0.0;
2004     double y = 0.0;
2005     double width = 0.0;
2006     double height = 0.0;
2007     double minWidth = 5.0;
2008     double minHeight = 5.0;
2009     double m_regionProportionX = -1.0;
2010     double m_regionProportionY = -1.0;
2011     int formatMode = FORMAT_NONE;
2012     int fontSize = 10;
2013     int fontFamily = wxSWISS;
2014     int fontStyle = wxNORMAL;
2015     int fontWeight = wxNORMAL;
2016     wxString regionTextColour("");
2017     wxString penColour("");
2018     int penStyle = wxSOLID;
2019
2020     if (regionExpr->Type() == PrologList)
2021     {
2022       wxExpr *nameExpr = regionExpr->Nth(0);
2023       wxExpr *textExpr = regionExpr->Nth(1);
2024       wxExpr *xExpr = regionExpr->Nth(2);
2025       wxExpr *yExpr = regionExpr->Nth(3);
2026       wxExpr *widthExpr = regionExpr->Nth(4);
2027       wxExpr *heightExpr = regionExpr->Nth(5);
2028       wxExpr *minWidthExpr = regionExpr->Nth(6);
2029       wxExpr *minHeightExpr = regionExpr->Nth(7);
2030       wxExpr *propXExpr = regionExpr->Nth(8);
2031       wxExpr *propYExpr = regionExpr->Nth(9);
2032       wxExpr *formatExpr = regionExpr->Nth(10);
2033       wxExpr *sizeExpr = regionExpr->Nth(11);
2034       wxExpr *familyExpr = regionExpr->Nth(12);
2035       wxExpr *styleExpr = regionExpr->Nth(13);
2036       wxExpr *weightExpr = regionExpr->Nth(14);
2037       wxExpr *colourExpr = regionExpr->Nth(15);
2038       wxExpr *penColourExpr = regionExpr->Nth(16);
2039       wxExpr *penStyleExpr = regionExpr->Nth(17);
2040
2041       regionName = nameExpr->StringValue();
2042       regionText = textExpr->StringValue();
2043
2044       x = xExpr->RealValue();
2045       y = yExpr->RealValue();
2046
2047       width = widthExpr->RealValue();
2048       height = heightExpr->RealValue();
2049
2050       minWidth = minWidthExpr->RealValue();
2051       minHeight = minHeightExpr->RealValue();
2052
2053       m_regionProportionX = propXExpr->RealValue();
2054       m_regionProportionY = propYExpr->RealValue();
2055
2056       formatMode = (int) formatExpr->IntegerValue();
2057       fontSize = (int)sizeExpr->IntegerValue();
2058       fontFamily = (int)familyExpr->IntegerValue();
2059       fontStyle = (int)styleExpr->IntegerValue();
2060       fontWeight = (int)weightExpr->IntegerValue();
2061
2062       if (colourExpr)
2063       {
2064         regionTextColour = colourExpr->StringValue();
2065       }
2066       else
2067         regionTextColour = "BLACK";
2068
2069       if (penColourExpr)
2070         penColour = penColourExpr->StringValue();
2071       if (penStyleExpr)
2072         penStyle = (int)penStyleExpr->IntegerValue();
2073     }
2074     wxFont *font = wxTheFontList->FindOrCreateFont(fontSize, fontFamily, fontStyle, fontWeight);
2075
2076     wxShapeRegion *region = new wxShapeRegion;
2077     region->SetProportions(m_regionProportionX, m_regionProportionY);
2078     region->SetFont(font);
2079     region->SetSize(width, height);
2080     region->SetPosition(x, y);
2081     region->SetMinSize(minWidth, minHeight);
2082     region->SetFormatMode(formatMode);
2083     region->SetPenStyle(penStyle);
2084     if (penColour != "")
2085       region->SetPenColour(penColour);
2086
2087     region->m_textColour = regionTextColour;
2088     region->m_regionText = regionText;
2089     region->m_regionName = regionName;
2090
2091     m_regions.Append(region);
2092
2093     /*
2094      * Get the formatted text strings
2095      *
2096      */
2097     textExpr = clause->AttributeValue(textNameBuf);
2098     if (textExpr && (textExpr->Type() == PrologList))
2099     {
2100       wxExpr *node = textExpr->value.first;
2101       while (node)
2102       {
2103         wxExpr *string_expr = node;
2104         double the_x = 0.0;
2105         double the_y = 0.0;
2106         wxString the_string("");
2107
2108         // string_expr can either be a string, or a list of
2109         // 3 elements: x, y, and string.
2110         if (string_expr->Type() == PrologString)
2111         {
2112           the_string = string_expr->StringValue();
2113           m_formatted = FALSE;
2114         }
2115         else if (string_expr->Type() == PrologList)
2116         {
2117           wxExpr *first = string_expr->value.first;
2118           wxExpr *second = first ? first->next : NULL;
2119           wxExpr *third = second ? second->next : NULL;
2120
2121           if (first && second && third &&
2122               (first->Type() == PrologReal || first->Type() == PrologInteger) &&
2123               (second->Type() == PrologReal || second->Type() == PrologInteger) &&
2124               third->Type() == PrologString)
2125           {
2126             if (first->Type() == PrologReal)
2127               the_x = first->RealValue();
2128             else the_x = (double)first->IntegerValue();
2129
2130             if (second->Type() == PrologReal)
2131               the_y = second->RealValue();
2132             else the_y = (double)second->IntegerValue();
2133
2134             the_string = third->StringValue();
2135           }
2136         }
2137         if (the_string)
2138         {
2139           wxShapeTextLine *line =
2140               new wxShapeTextLine(the_x, the_y, (char*) (const char*) the_string);
2141           region->m_formattedText.Append(line);
2142         }
2143         node = node->next;
2144       }
2145     }
2146
2147     regionNo ++;
2148     sprintf(regionNameBuf, "region%d", regionNo);
2149     sprintf(textNameBuf, "text%d", regionNo);
2150   }
2151
2152   // Compatibility: check for no regions (old file).
2153   // Lines and divided rectangles must deal with this compatibility
2154   // theirselves. Composites _may_ not have any regions anyway.
2155   if ((m_regions.Number() == 0) &&
2156       !this->IsKindOf(CLASSINFO(wxLineShape)) && !this->IsKindOf(CLASSINFO(wxDividedShape)) &&
2157       !this->IsKindOf(CLASSINFO(wxCompositeShape)))
2158   {
2159     wxShapeRegion *newRegion = new wxShapeRegion;
2160     newRegion->SetName("0");
2161     m_regions.Append((wxObject *)newRegion);
2162     if (m_text.Number() > 0)
2163     {
2164       newRegion->ClearText();
2165       wxNode *node = m_text.First();
2166       while (node)
2167       {
2168         wxShapeTextLine *textLine = (wxShapeTextLine *)node->Data();
2169         wxNode *next = node->Next();
2170         newRegion->GetFormattedText().Append((wxObject *)textLine);
2171         delete node;
2172         node = next;
2173       }
2174     }
2175   }
2176 }
2177
2178 #endif
2179
2180 void wxShape::Copy(wxShape& copy)
2181 {
2182   copy.m_id = m_id;
2183   copy.m_xpos = m_xpos;
2184   copy.m_ypos = m_ypos;
2185   copy.m_pen = m_pen;
2186   copy.m_brush = m_brush;
2187   copy.m_textColour = m_textColour;
2188   copy.m_centreResize = m_centreResize;
2189   copy.m_attachmentMode = m_attachmentMode;
2190   copy.m_spaceAttachments = m_spaceAttachments;
2191   copy.m_highlighted = m_highlighted;
2192   copy.m_rotation = m_rotation;
2193   copy.m_textColourName = m_textColourName;
2194   copy.m_regionName = m_regionName;
2195
2196   copy.m_sensitivity = m_sensitivity;
2197   copy.m_draggable = m_draggable;
2198   copy.m_fixedWidth = m_fixedWidth;
2199   copy.m_fixedHeight = m_fixedHeight;
2200   copy.m_formatMode = m_formatMode;
2201   copy.m_drawHandles = m_drawHandles;
2202
2203   copy.m_visible = m_visible;
2204   copy.m_shadowMode = m_shadowMode;
2205   copy.m_shadowOffsetX = m_shadowOffsetX;
2206   copy.m_shadowOffsetY = m_shadowOffsetY;
2207   copy.m_shadowBrush = m_shadowBrush;
2208
2209   // Copy text regions
2210   copy.ClearRegions();
2211   wxNode *node = m_regions.First();
2212   while (node)
2213   {
2214     wxShapeRegion *region = (wxShapeRegion *)node->Data();
2215     wxShapeRegion *newRegion = new wxShapeRegion(*region);
2216     copy.m_regions.Append(newRegion);
2217     node = node->Next();
2218   }
2219
2220   // Copy attachments
2221   copy.ClearAttachments();
2222   node = m_attachmentPoints.First();
2223   while (node)
2224   {
2225     wxAttachmentPoint *point = (wxAttachmentPoint *)node->Data();
2226     wxAttachmentPoint *newPoint = new wxAttachmentPoint;
2227     newPoint->m_id = point->m_id;
2228     newPoint->m_x = point->m_x;
2229     newPoint->m_y = point->m_y;
2230     copy.m_attachmentPoints.Append((wxObject *)newPoint);
2231     node = node->Next();
2232   }
2233
2234   // Copy lines
2235   copy.m_lines.Clear();
2236   node = m_lines.First();
2237   while (node)
2238   {
2239     wxLineShape* line = (wxLineShape*) node->Data();
2240     copy.m_lines.Append(line);
2241     node = node->Next();
2242   }
2243 }
2244
2245 // Create and return a new, fully copied object.
2246 wxShape *wxShape::CreateNewCopy(bool resetMapping, bool recompute)
2247 {
2248   if (resetMapping)
2249     oglObjectCopyMapping.Clear();
2250
2251   wxShape* newObject = (wxShape*) GetClassInfo()->CreateObject();
2252
2253   wxASSERT( (newObject != NULL) );
2254   wxASSERT( (newObject->IsKindOf(CLASSINFO(wxShape))) );
2255
2256   Copy(*newObject);
2257
2258   if (GetEventHandler() != this)
2259   {
2260     wxShapeEvtHandler* newHandler = GetEventHandler()->CreateNewCopy();
2261     newObject->SetEventHandler(newHandler);
2262     newObject->SetPreviousHandler(NULL);
2263     newHandler->SetPreviousHandler(newObject);
2264     newHandler->SetShape(newObject);
2265   }
2266
2267   if (recompute)
2268     newObject->Recompute();
2269   return newObject;
2270 }
2271
2272 // Does the copying for this object, including copying event
2273 // handler data if any. Calls the virtual Copy function.
2274 void wxShape::CopyWithHandler(wxShape& copy)
2275 {
2276     Copy(copy);
2277
2278     if (GetEventHandler() != this)
2279     {
2280         wxASSERT( copy.GetEventHandler() != NULL );
2281         wxASSERT( copy.GetEventHandler() != (&copy) );
2282         wxASSERT( GetEventHandler()->GetClassInfo() == copy.GetEventHandler()->GetClassInfo() );
2283         GetEventHandler()->CopyData(* (copy.GetEventHandler()));
2284     }
2285 }
2286
2287
2288 // Default - make 6 control points
2289 void wxShape::MakeControlPoints()
2290 {
2291   double maxX, maxY, minX, minY;
2292
2293   GetBoundingBoxMax(&maxX, &maxY);
2294   GetBoundingBoxMin(&minX, &minY);
2295
2296   double widthMin = (double)(minX + CONTROL_POINT_SIZE + 2);
2297   double heightMin = (double)(minY + CONTROL_POINT_SIZE + 2);
2298
2299   // Offsets from main object
2300   double top = (double)(- (heightMin / 2.0));
2301   double bottom = (double)(heightMin / 2.0 + (maxY - minY));
2302   double left = (double)(- (widthMin / 2.0));
2303   double right = (double)(widthMin / 2.0 + (maxX - minX));
2304
2305   wxControlPoint *control = new wxControlPoint(m_canvas, this, CONTROL_POINT_SIZE, left, top,
2306                                            CONTROL_POINT_DIAGONAL);
2307   m_canvas->AddShape(control);
2308   m_controlPoints.Append(control);
2309
2310   control = new wxControlPoint(m_canvas, this, CONTROL_POINT_SIZE, 0, top,
2311                                            CONTROL_POINT_VERTICAL);
2312   m_canvas->AddShape(control);
2313   m_controlPoints.Append(control);
2314
2315   control = new wxControlPoint(m_canvas, this, CONTROL_POINT_SIZE, right, top,
2316                                            CONTROL_POINT_DIAGONAL);
2317   m_canvas->AddShape(control);
2318   m_controlPoints.Append(control);
2319
2320   control = new wxControlPoint(m_canvas, this, CONTROL_POINT_SIZE, right, 0,
2321                                            CONTROL_POINT_HORIZONTAL);
2322   m_canvas->AddShape(control);
2323   m_controlPoints.Append(control);
2324
2325   control = new wxControlPoint(m_canvas, this, CONTROL_POINT_SIZE, right, bottom,
2326                                            CONTROL_POINT_DIAGONAL);
2327   m_canvas->AddShape(control);
2328   m_controlPoints.Append(control);
2329
2330   control = new wxControlPoint(m_canvas, this, CONTROL_POINT_SIZE, 0, bottom,
2331                                            CONTROL_POINT_VERTICAL);
2332   m_canvas->AddShape(control);
2333   m_controlPoints.Append(control);
2334
2335   control = new wxControlPoint(m_canvas, this, CONTROL_POINT_SIZE, left, bottom,
2336                                            CONTROL_POINT_DIAGONAL);
2337   m_canvas->AddShape(control);
2338   m_controlPoints.Append(control);
2339
2340   control = new wxControlPoint(m_canvas, this, CONTROL_POINT_SIZE, left, 0,
2341                                            CONTROL_POINT_HORIZONTAL);
2342   m_canvas->AddShape(control);
2343   m_controlPoints.Append(control);
2344
2345 }
2346
2347 void wxShape::MakeMandatoryControlPoints()
2348 {
2349   wxNode *node = m_children.First();
2350   while (node)
2351   {
2352     wxShape *child = (wxShape *)node->Data();
2353     child->MakeMandatoryControlPoints();
2354     node = node->Next();
2355   }
2356 }
2357
2358 void wxShape::ResetMandatoryControlPoints()
2359 {
2360   wxNode *node = m_children.First();
2361   while (node)
2362   {
2363     wxShape *child = (wxShape *)node->Data();
2364     child->ResetMandatoryControlPoints();
2365     node = node->Next();
2366   }
2367 }
2368
2369 void wxShape::ResetControlPoints()
2370 {
2371   ResetMandatoryControlPoints();
2372
2373   if (m_controlPoints.Number() < 1)
2374     return;
2375
2376   double maxX, maxY, minX, minY;
2377
2378   GetBoundingBoxMax(&maxX, &maxY);
2379   GetBoundingBoxMin(&minX, &minY);
2380
2381   double widthMin = (double)(minX + CONTROL_POINT_SIZE + 2);
2382   double heightMin = (double)(minY + CONTROL_POINT_SIZE + 2);
2383
2384   // Offsets from main object
2385   double top = (double)(- (heightMin / 2.0));
2386   double bottom = (double)(heightMin / 2.0 + (maxY - minY));
2387   double left = (double)(- (widthMin / 2.0));
2388   double right = (double)(widthMin / 2.0 + (maxX - minX));
2389
2390   wxNode *node = m_controlPoints.First();
2391   wxControlPoint *control = (wxControlPoint *)node->Data();
2392   control->m_xoffset = left; control->m_yoffset = top;
2393
2394   node = node->Next(); control = (wxControlPoint *)node->Data();
2395   control->m_xoffset = 0; control->m_yoffset = top;
2396
2397   node = node->Next(); control = (wxControlPoint *)node->Data();
2398   control->m_xoffset = right; control->m_yoffset = top;
2399
2400   node = node->Next(); control = (wxControlPoint *)node->Data();
2401   control->m_xoffset = right; control->m_yoffset = 0;
2402
2403   node = node->Next(); control = (wxControlPoint *)node->Data();
2404   control->m_xoffset = right; control->m_yoffset = bottom;
2405
2406   node = node->Next(); control = (wxControlPoint *)node->Data();
2407   control->m_xoffset = 0; control->m_yoffset = bottom;
2408
2409   node = node->Next(); control = (wxControlPoint *)node->Data();
2410   control->m_xoffset = left; control->m_yoffset = bottom;
2411
2412   node = node->Next(); control = (wxControlPoint *)node->Data();
2413   control->m_xoffset = left; control->m_yoffset = 0;
2414 }
2415
2416 void wxShape::DeleteControlPoints(wxDC *dc)
2417 {
2418   wxNode *node = m_controlPoints.First();
2419   while (node)
2420   {
2421     wxControlPoint *control = (wxControlPoint *)node->Data();
2422     if (dc)
2423         control->GetEventHandler()->OnErase(*dc);
2424     m_canvas->RemoveShape(control);
2425     delete control;
2426     delete node;
2427     node = m_controlPoints.First();
2428   }
2429   // Children of divisions are contained objects,
2430   // so stop here
2431   if (!IsKindOf(CLASSINFO(wxDivisionShape)))
2432   {
2433     node = m_children.First();
2434     while (node)
2435     {
2436       wxShape *child = (wxShape *)node->Data();
2437       child->DeleteControlPoints(dc);
2438       node = node->Next();
2439     }
2440   }
2441 }
2442
2443 void wxShape::OnDrawControlPoints(wxDC& dc)
2444 {
2445   if (!m_drawHandles)
2446     return;
2447
2448   dc.SetBrush(wxBLACK_BRUSH);
2449   dc.SetPen(wxBLACK_PEN);
2450
2451   wxNode *node = m_controlPoints.First();
2452   while (node)
2453   {
2454     wxControlPoint *control = (wxControlPoint *)node->Data();
2455     control->Draw(dc);
2456     node = node->Next();
2457   }
2458   // Children of divisions are contained objects,
2459   // so stop here.
2460   // This test bypasses the type facility for speed
2461   // (critical when drawing)
2462   if (!IsKindOf(CLASSINFO(wxDivisionShape)))
2463   {
2464     node = m_children.First();
2465     while (node)
2466     {
2467       wxShape *child = (wxShape *)node->Data();
2468       child->GetEventHandler()->OnDrawControlPoints(dc);
2469       node = node->Next();
2470     }
2471   }
2472 }
2473
2474 void wxShape::OnEraseControlPoints(wxDC& dc)
2475 {
2476   wxNode *node = m_controlPoints.First();
2477   while (node)
2478   {
2479     wxControlPoint *control = (wxControlPoint *)node->Data();
2480     control->Erase(dc);
2481     node = node->Next();
2482   }
2483   if (!IsKindOf(CLASSINFO(wxDivisionShape)))
2484   {
2485     node = m_children.First();
2486     while (node)
2487     {
2488       wxShape *child = (wxShape *)node->Data();
2489       child->GetEventHandler()->OnEraseControlPoints(dc);
2490       node = node->Next();
2491     }
2492   }
2493 }
2494
2495 void wxShape::Select(bool select, wxDC* dc)
2496 {
2497   m_selected = select;
2498   if (select)
2499   {
2500     MakeControlPoints();
2501     // Children of divisions are contained objects,
2502     // so stop here
2503     if (!IsKindOf(CLASSINFO(wxDivisionShape)))
2504     {
2505       wxNode *node = m_children.First();
2506       while (node)
2507       {
2508         wxShape *child = (wxShape *)node->Data();
2509         child->MakeMandatoryControlPoints();
2510         node = node->Next();
2511       }
2512     }
2513     if (dc)
2514         GetEventHandler()->OnDrawControlPoints(*dc);
2515   }
2516   if (!select)
2517   {
2518     DeleteControlPoints(dc);
2519     if (!IsKindOf(CLASSINFO(wxDivisionShape)))
2520     {
2521       wxNode *node = m_children.First();
2522       while (node)
2523       {
2524         wxShape *child = (wxShape *)node->Data();
2525         child->DeleteControlPoints(dc);
2526         node = node->Next();
2527       }
2528     }
2529   }
2530 }
2531
2532 bool wxShape::Selected() const
2533 {
2534   return m_selected;
2535 }
2536
2537 bool wxShape::AncestorSelected() const
2538 {
2539   if (m_selected) return TRUE;
2540   if (!GetParent())
2541     return FALSE;
2542   else
2543     return GetParent()->AncestorSelected();
2544 }
2545
2546 int wxShape::GetNumberOfAttachments() const
2547 {
2548   // Should return the MAXIMUM attachment point id here,
2549   // so higher-level functions can iterate through all attachments,
2550   // even if they're not contiguous.
2551   if (m_attachmentPoints.Number() == 0)
2552     return 4;
2553   else
2554   {
2555     int maxN = 3;
2556     wxNode *node = m_attachmentPoints.First();
2557     while (node)
2558     {
2559       wxAttachmentPoint *point = (wxAttachmentPoint *)node->Data();
2560       if (point->m_id > maxN)
2561         maxN = point->m_id;
2562       node = node->Next();
2563     }
2564     return maxN+1;;
2565   }
2566 }
2567
2568 bool wxShape::AttachmentIsValid(int attachment) const
2569 {
2570   if ((attachment >= 0) && (attachment < 4))
2571     return TRUE;
2572
2573   wxNode *node = m_attachmentPoints.First();
2574   while (node)
2575   {
2576     wxAttachmentPoint *point = (wxAttachmentPoint *)node->Data();
2577     if (point->m_id == attachment)
2578       return TRUE;
2579     node = node->Next();
2580   }
2581   return FALSE;
2582 }
2583
2584 bool wxShape::GetAttachmentPosition(int attachment, double *x, double *y,
2585                                          int nth, int no_arcs, wxLineShape *line)
2586 {
2587   if (!m_attachmentMode)
2588   {
2589     *x = m_xpos; *y = m_ypos;
2590     return TRUE;
2591   }
2592   else
2593   {
2594     wxNode *node = m_attachmentPoints.First();
2595     while (node)
2596     {
2597       wxAttachmentPoint *point = (wxAttachmentPoint *)node->Data();
2598       if (point->m_id == attachment)
2599       {
2600         *x = (double)(m_xpos + point->m_x);
2601         *y = (double)(m_ypos + point->m_y);
2602         return TRUE;
2603       }
2604       node = node->Next();
2605     }
2606     *x = m_xpos; *y = m_ypos;
2607     return FALSE;
2608   }
2609 }
2610
2611 void wxShape::GetBoundingBoxMax(double *w, double *h)
2612 {
2613   double ww, hh;
2614   GetBoundingBoxMin(&ww, &hh);
2615   if (m_shadowMode != SHADOW_NONE)
2616   {
2617     ww += m_shadowOffsetX;
2618     hh += m_shadowOffsetY;
2619   }
2620   *w = ww;
2621   *h = hh;
2622 }
2623
2624 // Returns TRUE if image is a descendant of this composite
2625 bool wxShape::HasDescendant(wxShape *image)
2626 {
2627   if (image == this)
2628     return TRUE;
2629   wxNode *node = m_children.First();
2630   while (node)
2631   {
2632     wxShape *child = (wxShape *)node->Data();
2633     bool ans = child->HasDescendant(image);
2634     if (ans)
2635       return TRUE;
2636     node = node->Next();
2637   }
2638   return FALSE;
2639 }
2640
2641 // Clears points from a list of wxRealPoints, and clears list
2642 void wxShape::ClearPointList(wxList& list)
2643 {
2644     wxNode* node = list.First();
2645     while (node)
2646     {
2647         wxRealPoint* pt = (wxRealPoint*) node->Data();
2648         delete pt;
2649
2650         node = node->Next();
2651     }
2652     list.Clear();
2653 }
2654
2655 // Assuming the attachment lies along a vertical or horizontal line,
2656 // calculate the position on that point.
2657 wxRealPoint wxShape::CalcSimpleAttachment(const wxRealPoint& pt1, const wxRealPoint& pt2,
2658     int nth, int noArcs, wxLineShape* line)
2659 {
2660     bool isEnd = (line && line->IsEnd(this));
2661
2662     // Are we horizontal or vertical?
2663     bool isHorizontal = (oglRoughlyEqual(pt1.y, pt2.y) == TRUE);
2664
2665     double x, y;
2666
2667     if (isHorizontal)
2668     {
2669         wxRealPoint firstPoint, secondPoint;
2670         if (pt1.x > pt2.x)
2671         {
2672             firstPoint = pt2;
2673             secondPoint = pt1;
2674         }
2675         else
2676         {
2677             firstPoint = pt1;
2678             secondPoint = pt2;
2679         }
2680
2681         if (m_spaceAttachments)
2682         {
2683           if (line && (line->GetAlignmentType(isEnd) == LINE_ALIGNMENT_TO_NEXT_HANDLE))
2684           {
2685             // Align line according to the next handle along
2686             wxRealPoint *point = line->GetNextControlPoint(this);
2687             if (point->x < firstPoint.x)
2688               x = firstPoint.x;
2689             else if (point->x > secondPoint.x)
2690               x = secondPoint.x;
2691             else
2692               x = point->x;
2693           }
2694           else
2695             x = firstPoint.x + (nth + 1)*(secondPoint.x - firstPoint.x)/(noArcs + 1);
2696         }
2697         else x = (secondPoint.x - firstPoint.x)/2.0; // Midpoint
2698
2699         y = pt1.y;
2700     }
2701     else
2702     {
2703         wxASSERT( oglRoughlyEqual(pt1.x, pt2.x) == TRUE );
2704
2705         wxRealPoint firstPoint, secondPoint;
2706         if (pt1.y > pt2.y)
2707         {
2708             firstPoint = pt2;
2709             secondPoint = pt1;
2710         }
2711         else
2712         {
2713             firstPoint = pt1;
2714             secondPoint = pt2;
2715         }
2716
2717         if (m_spaceAttachments)
2718         {
2719           if (line && (line->GetAlignmentType(isEnd) == LINE_ALIGNMENT_TO_NEXT_HANDLE))
2720           {
2721             // Align line according to the next handle along
2722             wxRealPoint *point = line->GetNextControlPoint(this);
2723             if (point->y < firstPoint.y)
2724               y = firstPoint.y;
2725             else if (point->y > secondPoint.y)
2726               y = secondPoint.y;
2727             else
2728               y = point->y;
2729           }
2730           else
2731             y = firstPoint.y + (nth + 1)*(secondPoint.y - firstPoint.y)/(noArcs + 1);
2732         }
2733         else y = (secondPoint.y - firstPoint.y)/2.0; // Midpoint
2734
2735         x = pt1.x;
2736     }
2737
2738     return wxRealPoint(x, y);
2739 }
2740
2741 // Return the zero-based position in m_lines of line.
2742 int wxShape::GetLinePosition(wxLineShape* line)
2743 {
2744     int i = 0;
2745     for (i = 0; i < m_lines.Number(); i++)
2746         if ((wxLineShape*) (m_lines.Nth(i)->Data()) == line)
2747             return i;
2748
2749     return 0;
2750 }
2751