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 void wxShape::MoveLineToNewAttachment(wxDC& dc, wxLineShape *to_move,
1060                                        double x, double y)
1061 {
1062   if (!GetAttachmentMode())
1063       return;
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;
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
1143 void wxShape::OnChangeAttachment(int attachment, wxLineShape* line, wxList& ordering)
1144 {
1145     if (line->GetTo() == this)
1146         line->SetAttachmentTo(attachment);
1147     else
1148         line->SetAttachmentFrom(attachment);
1149
1150     ApplyAttachmentOrdering(ordering);
1151
1152     wxClientDC dc(GetCanvas());
1153     GetCanvas()->PrepareDC(dc);
1154
1155     MoveLinks(dc);
1156
1157     if (!GetCanvas()->GetQuickEditMode()) GetCanvas()->Redraw(dc);
1158 }
1159
1160 // Reorders the lines according to the given list.
1161 void wxShape::ApplyAttachmentOrdering(wxList& linesToSort)
1162 {
1163   // This is a temporary store of all the lines.
1164   wxList linesStore;
1165
1166   wxNode *node = m_lines.First();
1167   while (node)
1168   {
1169     wxLineShape *line = (wxLineShape *)node->Data();
1170     linesStore.Append(line);
1171     node = node->Next();;
1172   }
1173
1174   m_lines.Clear();
1175
1176   node = linesToSort.First();
1177   while (node)
1178   {
1179     wxLineShape *line = (wxLineShape *)node->Data();
1180     if (linesStore.Member(line))
1181     {
1182       // Done this one
1183       linesStore.DeleteObject(line);
1184       m_lines.Append(line);
1185     }
1186     node = node->Next();
1187   }
1188
1189   // Now add any lines that haven't been listed in linesToSort.
1190   node = linesStore.First();
1191   while (node)
1192   {
1193     wxLineShape *line = (wxLineShape *)node->Data();
1194     m_lines.Append(line);
1195     node = node->Next();
1196   }
1197 }
1198
1199 // Reorders the lines coming into the node image at this attachment
1200 // position, in the order in which they appear in linesToSort.
1201 // Any remaining lines not in the list will be added to the end.
1202 void wxShape::SortLines(int attachment, wxList& linesToSort)
1203 {
1204   // This is a temporary store of all the lines at this attachment
1205   // point. We'll tick them off as we've processed them.
1206   wxList linesAtThisAttachment;
1207
1208   wxNode *node = m_lines.First();
1209   while (node)
1210   {
1211     wxLineShape *line = (wxLineShape *)node->Data();
1212     wxNode *next = node->Next();
1213     if ((line->GetTo() == this && line->GetAttachmentTo() == attachment) ||
1214         (line->GetFrom() == this && line->GetAttachmentFrom() == attachment))
1215     {
1216       linesAtThisAttachment.Append(line);
1217       delete node;
1218       node = next;
1219     }
1220     else node = node->Next();
1221   }
1222
1223   node = linesToSort.First();
1224   while (node)
1225   {
1226     wxLineShape *line = (wxLineShape *)node->Data();
1227     if (linesAtThisAttachment.Member(line))
1228     {
1229       // Done this one
1230       linesAtThisAttachment.DeleteObject(line);
1231       m_lines.Append(line);
1232     }
1233     node = node->Next();
1234   }
1235
1236   // Now add any lines that haven't been listed in linesToSort.
1237   node = linesAtThisAttachment.First();
1238   while (node)
1239   {
1240     wxLineShape *line = (wxLineShape *)node->Data();
1241     m_lines.Append(line);
1242     node = node->Next();
1243   }
1244 }
1245
1246 void wxShape::OnHighlight(wxDC& dc)
1247 {
1248 }
1249
1250 void wxShape::OnLeftClick(double x, double y, int keys, int attachment)
1251 {
1252   if ((m_sensitivity & OP_CLICK_LEFT) != OP_CLICK_LEFT)
1253   {
1254     attachment = 0;
1255     double dist;
1256     if (m_parent)
1257     {
1258       m_parent->HitTest(x, y, &attachment, &dist);
1259       m_parent->GetEventHandler()->OnLeftClick(x, y, keys, attachment);
1260     }
1261     return;
1262   }
1263 }
1264
1265 void wxShape::OnRightClick(double x, double y, int keys, int attachment)
1266 {
1267   if ((m_sensitivity & OP_CLICK_RIGHT) != OP_CLICK_RIGHT)
1268   {
1269     attachment = 0;
1270     double dist;
1271     if (m_parent)
1272     {
1273       m_parent->HitTest(x, y, &attachment, &dist);
1274       m_parent->GetEventHandler()->OnRightClick(x, y, keys, attachment);
1275     }
1276     return;
1277   }
1278 }
1279
1280 double DragOffsetX = 0.0;
1281 double DragOffsetY = 0.0;
1282
1283 void wxShape::OnDragLeft(bool draw, double x, double y, int keys, int attachment)
1284 {
1285   if ((m_sensitivity & OP_DRAG_LEFT) != OP_DRAG_LEFT)
1286   {
1287     attachment = 0;
1288     double dist;
1289     if (m_parent)
1290     {
1291       m_parent->HitTest(x, y, &attachment, &dist);
1292       m_parent->GetEventHandler()->OnDragLeft(draw, x, y, keys, attachment);
1293     }
1294     return;
1295   }
1296
1297   wxClientDC dc(GetCanvas());
1298   GetCanvas()->PrepareDC(dc);
1299
1300   dc.SetLogicalFunction(wxXOR);
1301
1302   wxPen dottedPen(wxColour(0, 0, 0), 1, wxDOT);
1303   dc.SetPen(dottedPen);
1304   dc.SetBrush(* wxTRANSPARENT_BRUSH);
1305
1306   double xx, yy;
1307   xx = x + DragOffsetX;
1308   yy = y + DragOffsetY;
1309
1310   m_canvas->Snap(&xx, &yy);
1311 //  m_xpos = xx; m_ypos = yy;
1312   double w, h;
1313   GetBoundingBoxMax(&w, &h);
1314   GetEventHandler()->OnDrawOutline(dc, xx, yy, w, h);
1315 }
1316
1317 void wxShape::OnBeginDragLeft(double x, double y, int keys, int attachment)
1318 {
1319   if ((m_sensitivity & OP_DRAG_LEFT) != OP_DRAG_LEFT)
1320   {
1321     attachment = 0;
1322     double dist;
1323     if (m_parent)
1324     {
1325       m_parent->HitTest(x, y, &attachment, &dist);
1326       m_parent->GetEventHandler()->OnBeginDragLeft(x, y, keys, attachment);
1327     }
1328     return;
1329   }
1330
1331   DragOffsetX = m_xpos - x;
1332   DragOffsetY = m_ypos - y;
1333
1334   wxClientDC dc(GetCanvas());
1335   GetCanvas()->PrepareDC(dc);
1336
1337   // New policy: don't erase shape until end of drag.
1338 //  Erase(dc);
1339
1340   double xx, yy;
1341   xx = x + DragOffsetX;
1342   yy = y + DragOffsetY;
1343   m_canvas->Snap(&xx, &yy);
1344 //  m_xpos = xx; m_ypos = yy;
1345   dc.SetLogicalFunction(wxXOR);
1346
1347   wxPen dottedPen(wxColour(0, 0, 0), 1, wxDOT);
1348   dc.SetPen(dottedPen);
1349   dc.SetBrush((* wxTRANSPARENT_BRUSH));
1350
1351   double w, h;
1352   GetBoundingBoxMax(&w, &h);
1353   GetEventHandler()->OnDrawOutline(dc, xx, yy, w, h);
1354   m_canvas->CaptureMouse();
1355 }
1356
1357 void wxShape::OnEndDragLeft(double x, double y, int keys, int attachment)
1358 {
1359   m_canvas->ReleaseMouse();
1360   if ((m_sensitivity & OP_DRAG_LEFT) != OP_DRAG_LEFT)
1361   {
1362     attachment = 0;
1363     double dist;
1364     if (m_parent)
1365     {
1366       m_parent->HitTest(x, y, &attachment, &dist);
1367       m_parent->GetEventHandler()->OnEndDragLeft(x, y, keys, attachment);
1368     }
1369     return;
1370   }
1371
1372   wxClientDC dc(GetCanvas());
1373   GetCanvas()->PrepareDC(dc);
1374
1375   dc.SetLogicalFunction(wxCOPY);
1376
1377   double xx = x + DragOffsetX;
1378   double yy = y + DragOffsetY;
1379   m_canvas->Snap(&xx, &yy);
1380 //  canvas->Snap(&m_xpos, &m_ypos);
1381
1382   // New policy: erase shape at end of drag.
1383   Erase(dc);
1384
1385   Move(dc, xx, yy);
1386   if (m_canvas && !m_canvas->GetQuickEditMode()) m_canvas->Redraw(dc);
1387 }
1388
1389 void wxShape::OnDragRight(bool draw, double x, double y, int keys, int attachment)
1390 {
1391   if ((m_sensitivity & OP_DRAG_RIGHT) != OP_DRAG_RIGHT)
1392   {
1393     attachment = 0;
1394     double dist;
1395     if (m_parent)
1396     {
1397       m_parent->HitTest(x, y, &attachment, &dist);
1398       m_parent->GetEventHandler()->OnDragRight(draw, x, y, keys, attachment);
1399     }
1400     return;
1401   }
1402 }
1403
1404 void wxShape::OnBeginDragRight(double x, double y, int keys, int attachment)
1405 {
1406   if ((m_sensitivity & OP_DRAG_RIGHT) != OP_DRAG_RIGHT)
1407   {
1408     attachment = 0;
1409     double dist;
1410     if (m_parent)
1411     {
1412       m_parent->HitTest(x, y, &attachment, &dist);
1413       m_parent->GetEventHandler()->OnBeginDragRight(x, y, keys, attachment);
1414     }
1415     return;
1416   }
1417 }
1418
1419 void wxShape::OnEndDragRight(double x, double y, int keys, int attachment)
1420 {
1421   if ((m_sensitivity & OP_DRAG_RIGHT) != OP_DRAG_RIGHT)
1422   {
1423     attachment = 0;
1424     double dist;
1425     if (m_parent)
1426     {
1427       m_parent->HitTest(x, y, &attachment, &dist);
1428       m_parent->GetEventHandler()->OnEndDragRight(x, y, keys, attachment);
1429     }
1430     return;
1431   }
1432 }
1433
1434 void wxShape::OnDrawOutline(wxDC& dc, double x, double y, double w, double h)
1435 {
1436   double top_left_x = (double)(x - w/2.0);
1437   double top_left_y = (double)(y - h/2.0);
1438   double top_right_x = (double)(top_left_x + w);
1439   double top_right_y = (double)top_left_y;
1440   double bottom_left_x = (double)top_left_x;
1441   double bottom_left_y = (double)(top_left_y + h);
1442   double bottom_right_x = (double)top_right_x;
1443   double bottom_right_y = (double)bottom_left_y;
1444
1445   wxPoint points[5];
1446   points[0].x = WXROUND(top_left_x); points[0].y = WXROUND(top_left_y);
1447   points[1].x = WXROUND(top_right_x); points[1].y = WXROUND(top_right_y);
1448   points[2].x = WXROUND(bottom_right_x); points[2].y = WXROUND(bottom_right_y);
1449   points[3].x = WXROUND(bottom_left_x); points[3].y = WXROUND(bottom_left_y);
1450   points[4].x = WXROUND(top_left_x); points[4].y = WXROUND(top_left_y);
1451
1452   dc.DrawLines(5, points);
1453 }
1454
1455 void wxShape::Attach(wxShapeCanvas *can)
1456 {
1457   m_canvas = can;
1458 }
1459
1460 void wxShape::Detach()
1461 {
1462   m_canvas = NULL;
1463 }
1464
1465 void wxShape::Move(wxDC& dc, double x, double y, bool display)
1466 {
1467   double old_x = m_xpos;
1468   double old_y = m_ypos;
1469
1470   m_xpos = x; m_ypos = y;
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   ResetControlPoints();
1480
1481   if (display)
1482     Draw(dc);
1483
1484   MoveLinks(dc);
1485
1486   GetEventHandler()->OnMovePost(dc, x, y, old_x, old_y, display);
1487 }
1488
1489 void wxShape::MoveLinks(wxDC& dc)
1490 {
1491   GetEventHandler()->OnMoveLinks(dc);
1492 }
1493
1494
1495 void wxShape::Draw(wxDC& dc)
1496 {
1497   if (m_visible)
1498   {
1499     GetEventHandler()->OnDraw(dc);
1500     GetEventHandler()->OnDrawContents(dc);
1501     GetEventHandler()->OnDrawControlPoints(dc);
1502   }
1503 }
1504
1505 void wxShape::Flash()
1506 {
1507     if (GetCanvas())
1508     {
1509         wxClientDC dc(GetCanvas());
1510         GetCanvas()->PrepareDC(dc);
1511
1512         dc.SetLogicalFunction(wxXOR);
1513         Draw(dc);
1514         dc.SetLogicalFunction(wxCOPY);
1515         Draw(dc);
1516     }
1517 }
1518
1519 void wxShape::Show(bool show)
1520 {
1521   m_visible = show;
1522   wxNode *node = m_children.First();
1523   while (node)
1524   {
1525     wxShape *image = (wxShape *)node->Data();
1526     image->Show(show);
1527     node = node->Next();
1528   }
1529 }
1530
1531 void wxShape::Erase(wxDC& dc)
1532 {
1533   GetEventHandler()->OnErase(dc);
1534   GetEventHandler()->OnEraseControlPoints(dc);
1535 }
1536
1537 void wxShape::EraseContents(wxDC& dc)
1538 {
1539   GetEventHandler()->OnEraseContents(dc);
1540 }
1541
1542 void wxShape::AddText(const wxString& string)
1543 {
1544   wxNode *node = m_regions.First();
1545   if (!node)
1546     return;
1547   wxShapeRegion *region = (wxShapeRegion *)node->Data();
1548   region->ClearText();
1549   wxShapeTextLine *new_line =
1550       new wxShapeTextLine(0.0, 0.0, string);
1551   region->GetFormattedText().Append(new_line);
1552
1553   m_formatted = FALSE;
1554 }
1555
1556 void wxShape::SetSize(double x, double y, bool recursive)
1557 {
1558   SetAttachmentSize(x, y);
1559   SetDefaultRegionSize();
1560 }
1561
1562 void wxShape::SetAttachmentSize(double w, double h)
1563 {
1564   double scaleX;
1565   double scaleY;
1566   double width, height;
1567   GetBoundingBoxMin(&width, &height);
1568   if (width == 0.0)
1569     scaleX = 1.0;
1570   else scaleX = w/width;
1571   if (height == 0.0)
1572     scaleY = 1.0;
1573   else scaleY = h/height;
1574
1575   wxNode *node = m_attachmentPoints.First();
1576   while (node)
1577   {
1578     wxAttachmentPoint *point = (wxAttachmentPoint *)node->Data();
1579     point->m_x = (double)(point->m_x * scaleX);
1580     point->m_y = (double)(point->m_y * scaleY);
1581     node = node->Next();
1582   }
1583 }
1584
1585 // Add line FROM this object
1586 void wxShape::AddLine(wxLineShape *line, wxShape *other,
1587                             int attachFrom, int attachTo,
1588                             // The line ordering
1589                             int positionFrom, int positionTo)
1590 {
1591     m_lines.DeleteObject(line);
1592     other->m_lines.DeleteObject(line);
1593
1594     if (positionFrom == -1)
1595         m_lines.Append(line);
1596     else
1597     {
1598         if (positionFrom < m_lines.Number())
1599         {
1600             wxNode* node = m_lines.Nth(positionFrom);
1601             m_lines.Insert(node, line);
1602         }
1603         else
1604             m_lines.Append(line);
1605     }
1606
1607     if (positionTo == -1)
1608         other->m_lines.Append(line);
1609     else
1610     {
1611         if (positionTo < other->m_lines.Number())
1612         {
1613             wxNode* node = other->m_lines.Nth(positionTo);
1614             other->m_lines.Insert(node, line);
1615         }
1616         else
1617             other->m_lines.Append(line);
1618     }
1619
1620     line->SetFrom(this);
1621     line->SetTo(other);
1622     line->SetAttachments(attachFrom, attachTo);
1623 }
1624
1625 void wxShape::RemoveLine(wxLineShape *line)
1626 {
1627   if (line->GetFrom() == this)
1628     line->GetTo()->m_lines.DeleteObject(line);
1629   else
1630    line->GetFrom()->m_lines.DeleteObject(line);
1631
1632   m_lines.DeleteObject(line);
1633 }
1634
1635 #ifdef PROLOGIO
1636 char *wxShape::GetFunctor()
1637 {
1638   return "node_image";
1639 }
1640
1641 void wxShape::WritePrologAttributes(wxExpr *clause)
1642 {
1643   clause->AddAttributeValueString("type", GetClassInfo()->GetClassName());
1644   clause->AddAttributeValue("id", m_id);
1645
1646   if (m_pen)
1647   {
1648     int penWidth = m_pen->GetWidth();
1649     int penStyle = m_pen->GetStyle();
1650     if (penWidth != 1)
1651       clause->AddAttributeValue("pen_width", (long)penWidth);
1652     if (penStyle != wxSOLID)
1653       clause->AddAttributeValue("pen_style", (long)penStyle);
1654
1655     wxString penColour = wxTheColourDatabase->FindName(m_pen->GetColour());
1656     if (penColour == "")
1657     {
1658       wxString hex(oglColourToHex(m_pen->GetColour()));
1659       hex = wxString("#") + hex;
1660       clause->AddAttributeValueString("pen_colour", hex);
1661     }
1662     else if (penColour != "BLACK")
1663       clause->AddAttributeValueString("pen_colour", penColour);
1664   }
1665
1666   if (m_brush)
1667   {
1668     wxString brushColour = wxTheColourDatabase->FindName(m_brush->GetColour());
1669
1670     if (brushColour == "")
1671     {
1672       wxString hex(oglColourToHex(m_brush->GetColour()));
1673       hex = wxString("#") + hex;
1674       clause->AddAttributeValueString("brush_colour", hex);
1675     }
1676     else if (brushColour != "WHITE")
1677       clause->AddAttributeValueString("brush_colour", brushColour);
1678
1679     if (m_brush->GetStyle() != wxSOLID)
1680       clause->AddAttributeValue("brush_style", (long)m_brush->GetStyle());
1681   }
1682
1683   // Output line ids
1684
1685   int n_lines = m_lines.Number();
1686   if (n_lines > 0)
1687   {
1688     wxExpr *list = new wxExpr(PrologList);
1689     wxNode *node = m_lines.First();
1690     while (node)
1691     {
1692       wxShape *line = (wxShape *)node->Data();
1693       wxExpr *id_expr = new wxExpr(line->GetId());
1694       list->Append(id_expr);
1695       node = node->Next();
1696     }
1697     clause->AddAttributeValue("arcs", list);
1698   }
1699
1700   // Miscellaneous members
1701   if (m_attachmentMode != 0)
1702     clause->AddAttributeValue("use_attachments", (long)m_attachmentMode);
1703   if (m_sensitivity != OP_ALL)
1704     clause->AddAttributeValue("sensitivity", (long)m_sensitivity);
1705   if (!m_spaceAttachments)
1706     clause->AddAttributeValue("space_attachments", (long)m_spaceAttachments);
1707   if (m_fixedWidth)
1708     clause->AddAttributeValue("fixed_width", (long)m_fixedWidth);
1709   if (m_fixedHeight)
1710     clause->AddAttributeValue("fixed_height", (long)m_fixedHeight);
1711   if (m_shadowMode != SHADOW_NONE)
1712     clause->AddAttributeValue("shadow_mode", (long)m_shadowMode);
1713   if (m_centreResize != TRUE)
1714     clause->AddAttributeValue("centre_resize", (long)0);
1715   if (m_highlighted != FALSE)
1716     clause->AddAttributeValue("hilite", (long)m_highlighted);
1717
1718   if (m_parent) // For composite objects
1719     clause->AddAttributeValue("parent", (long)m_parent->GetId());
1720
1721   if (m_rotation != 0.0)
1722     clause->AddAttributeValue("rotation", m_rotation);
1723
1724   // Write user-defined attachment points, if any
1725   if (m_attachmentPoints.Number() > 0)
1726   {
1727     wxExpr *attachmentList = new wxExpr(PrologList);
1728     wxNode *node = m_attachmentPoints.First();
1729     while (node)
1730     {
1731       wxAttachmentPoint *point = (wxAttachmentPoint *)node->Data();
1732       wxExpr *pointExpr = new wxExpr(PrologList);
1733       pointExpr->Append(new wxExpr((long)point->m_id));
1734       pointExpr->Append(new wxExpr(point->m_x));
1735       pointExpr->Append(new wxExpr(point->m_y));
1736       attachmentList->Append(pointExpr);
1737       node = node->Next();
1738     }
1739     clause->AddAttributeValue("user_attachments", attachmentList);
1740   }
1741
1742   // Write text regions
1743   WriteRegions(clause);
1744 }
1745
1746 void wxShape::WriteRegions(wxExpr *clause)
1747 {
1748   // Output regions as region1 = (...), region2 = (...), etc
1749   // and formatted text as text1 = (...), text2 = (...) etc.
1750   int regionNo = 1;
1751   char regionNameBuf[20];
1752   char textNameBuf[20];
1753   wxNode *node = m_regions.First();
1754   while (node)
1755   {
1756     wxShapeRegion *region = (wxShapeRegion *)node->Data();
1757     sprintf(regionNameBuf, "region%d", regionNo);
1758     sprintf(textNameBuf, "text%d", regionNo);
1759
1760     // Original text and region attributes:
1761     // region1 = (regionName regionText x y width height minWidth minHeight proportionX proportionY
1762     //            formatMode fontSize fontFamily fontStyle fontWeight textColour)
1763     wxExpr *regionExpr = new wxExpr(PrologList);
1764     regionExpr->Append(new wxExpr(PrologString, (region->m_regionName ? region->m_regionName : "")));
1765     regionExpr->Append(new wxExpr(PrologString, (region->m_regionText ? region->m_regionText : "")));
1766
1767     regionExpr->Append(new wxExpr(region->m_x));
1768     regionExpr->Append(new wxExpr(region->m_y));
1769     regionExpr->Append(new wxExpr(region->GetWidth()));
1770     regionExpr->Append(new wxExpr(region->GetHeight()));
1771
1772     regionExpr->Append(new wxExpr(region->m_minWidth));
1773     regionExpr->Append(new wxExpr(region->m_minHeight));
1774     regionExpr->Append(new wxExpr(region->m_regionProportionX));
1775     regionExpr->Append(new wxExpr(region->m_regionProportionY));
1776
1777     regionExpr->Append(new wxExpr((long)region->m_formatMode));
1778
1779     regionExpr->Append(new wxExpr((long)(region->m_font ? region->m_font->GetPointSize() : 10)));
1780     regionExpr->Append(new wxExpr((long)(region->m_font ? region->m_font->GetFamily() : wxDEFAULT)));
1781     regionExpr->Append(new wxExpr((long)(region->m_font ? region->m_font->GetStyle() : wxDEFAULT)));
1782     regionExpr->Append(new wxExpr((long)(region->m_font ? region->m_font->GetWeight() : wxNORMAL)));
1783     regionExpr->Append(new wxExpr(PrologString, region->m_textColour ? region->m_textColour : "BLACK"));
1784
1785     // New members for pen colour/style
1786     regionExpr->Append(new wxExpr(PrologString, region->m_penColour ? region->m_penColour : "BLACK"));
1787     regionExpr->Append(new wxExpr((long)region->m_penStyle));
1788
1789     // Formatted text:
1790     // text1 = ((x y string) (x y string) ...)
1791     wxExpr *textExpr = new wxExpr(PrologList);
1792
1793     wxNode *textNode = region->m_formattedText.First();
1794     while (textNode)
1795     {
1796       wxShapeTextLine *line = (wxShapeTextLine *)textNode->Data();
1797       wxExpr *list2 = new wxExpr(PrologList);
1798       list2->Append(new wxExpr(line->GetX()));
1799       list2->Append(new wxExpr(line->GetY()));
1800       list2->Append(new wxExpr(PrologString, line->GetText()));
1801       textExpr->Append(list2);
1802       textNode = textNode->Next();
1803     }
1804
1805     // Now add both attributes to the clause
1806     clause->AddAttributeValue(regionNameBuf, regionExpr);
1807     clause->AddAttributeValue(textNameBuf, textExpr);
1808
1809     node = node->Next();
1810     regionNo ++;
1811   }
1812 }
1813
1814 void wxShape::ReadPrologAttributes(wxExpr *clause)
1815 {
1816   clause->GetAttributeValue("id", m_id);
1817   RegisterId(m_id);
1818
1819   clause->GetAttributeValue("x", m_xpos);
1820   clause->GetAttributeValue("y", m_ypos);
1821
1822   // Input text strings (FOR COMPATIBILITY WITH OLD FILES ONLY. SEE REGION CODE BELOW.)
1823   ClearText();
1824   wxExpr *strings = clause->AttributeValue("text");
1825   if (strings && strings->Type() == PrologList)
1826   {
1827     m_formatted = TRUE;  // Assume text is formatted unless we prove otherwise
1828     wxExpr *node = strings->value.first;
1829     while (node)
1830     {
1831       wxExpr *string_expr = node;
1832       double the_x = 0.0;
1833       double the_y = 0.0;
1834       wxString the_string("");
1835
1836       // string_expr can either be a string, or a list of
1837       // 3 elements: x, y, and string.
1838       if (string_expr->Type() == PrologString)
1839       {
1840         the_string = string_expr->StringValue();
1841         m_formatted = FALSE;
1842       }
1843       else if (string_expr->Type() == PrologList)
1844       {
1845         wxExpr *first = string_expr->value.first;
1846         wxExpr *second = first ? first->next : NULL;
1847         wxExpr *third = second ? second->next : NULL;
1848
1849         if (first && second && third &&
1850             (first->Type() == PrologReal || first->Type() == PrologInteger) &&
1851             (second->Type() == PrologReal || second->Type() == PrologInteger) &&
1852             third->Type() == PrologString)
1853           {
1854             if (first->Type() == PrologReal)
1855               the_x = first->RealValue();
1856             else the_x = (double)first->IntegerValue();
1857
1858             if (second->Type() == PrologReal)
1859               the_y = second->RealValue();
1860             else the_y = (double)second->IntegerValue();
1861
1862             the_string = third->StringValue();
1863           }
1864       }
1865       wxShapeTextLine *line =
1866             new wxShapeTextLine(the_x, the_y, (char*) (const char*) the_string);
1867       m_text.Append(line);
1868
1869       node = node->next;
1870     }
1871   }
1872
1873   wxString pen_string = "";
1874   wxString brush_string = "";
1875   int pen_width = 1;
1876   int pen_style = wxSOLID;
1877   int brush_style = wxSOLID;
1878   m_attachmentMode = FALSE;
1879
1880   clause->GetAttributeValue("pen_colour", pen_string);
1881   clause->GetAttributeValue("text_colour", m_textColourName);
1882
1883   SetTextColour(m_textColourName);
1884
1885   clause->GetAttributeValue("region_name", m_regionName);
1886
1887   clause->GetAttributeValue("brush_colour", brush_string);
1888   clause->GetAttributeValue("pen_width", pen_width);
1889   clause->GetAttributeValue("pen_style", pen_style);
1890   clause->GetAttributeValue("brush_style", brush_style);
1891
1892   int iVal = (int) m_attachmentMode;
1893   clause->GetAttributeValue("use_attachments", iVal);
1894   m_attachmentMode = (iVal != 0);
1895
1896   clause->GetAttributeValue("sensitivity", m_sensitivity);
1897
1898   iVal = (int) m_spaceAttachments;
1899   clause->GetAttributeValue("space_attachments", iVal);
1900   m_spaceAttachments = (iVal != 0);
1901
1902   iVal = (int) m_fixedWidth;
1903   clause->GetAttributeValue("fixed_width", iVal);
1904   m_fixedWidth = (iVal != 0);
1905
1906   iVal = (int) m_fixedHeight;
1907   clause->GetAttributeValue("fixed_height", iVal);
1908   m_fixedHeight = (iVal != 0);
1909
1910   clause->GetAttributeValue("format_mode", m_formatMode);
1911   clause->GetAttributeValue("shadow_mode", m_shadowMode);
1912
1913   iVal = (int) m_centreResize;
1914   clause->GetAttributeValue("centre_resize", iVal);
1915   m_centreResize = (iVal != 0);
1916
1917   iVal = (int) m_highlighted;
1918   clause->GetAttributeValue("hilite", iVal);
1919   m_highlighted = (iVal != 0);
1920
1921   clause->GetAttributeValue("rotation", m_rotation);
1922
1923   if (pen_string == "")
1924     pen_string = "BLACK";
1925   if (brush_string == "")
1926     brush_string = "WHITE";
1927
1928   if (pen_string[0] == '#')
1929   {
1930     wxColour col(oglHexToColour(pen_string.After('#')));
1931     m_pen = wxThePenList->FindOrCreatePen(col, pen_width, pen_style);
1932   }
1933   else
1934     m_pen = wxThePenList->FindOrCreatePen(pen_string, pen_width, pen_style);
1935
1936   if (!m_pen)
1937     m_pen = wxBLACK_PEN;
1938
1939   if (brush_string[0] == '#')
1940   {
1941     wxColour col(oglHexToColour(brush_string.After('#')));
1942     m_brush = wxTheBrushList->FindOrCreateBrush(col, brush_style);
1943   }
1944   else
1945     m_brush = wxTheBrushList->FindOrCreateBrush(brush_string, brush_style);
1946
1947   if (!m_brush)
1948     m_brush = wxWHITE_BRUSH;
1949
1950   int point_size = 10;
1951   clause->GetAttributeValue("point_size", point_size);
1952   SetFont(oglMatchFont(point_size));
1953
1954   // Read user-defined attachment points, if any
1955   wxExpr *attachmentList = clause->AttributeValue("user_attachments");
1956   if (attachmentList)
1957   {
1958     wxExpr *pointExpr = attachmentList->GetFirst();
1959     while (pointExpr)
1960     {
1961       wxExpr *idExpr = pointExpr->Nth(0);
1962       wxExpr *xExpr = pointExpr->Nth(1);
1963       wxExpr *yExpr = pointExpr->Nth(2);
1964       if (idExpr && xExpr && yExpr)
1965       {
1966         wxAttachmentPoint *point = new wxAttachmentPoint;
1967         point->m_id = (int)idExpr->IntegerValue();
1968         point->m_x = xExpr->RealValue();
1969         point->m_y = yExpr->RealValue();
1970         m_attachmentPoints.Append((wxObject *)point);
1971       }
1972       pointExpr = pointExpr->GetNext();
1973     }
1974   }
1975
1976   // Read text regions
1977   ReadRegions(clause);
1978 }
1979
1980 void wxShape::ReadRegions(wxExpr *clause)
1981 {
1982   ClearRegions();
1983
1984   // region1 = (regionName regionText x y width height minWidth minHeight proportionX proportionY
1985   //            formatMode fontSize fontFamily fontStyle fontWeight textColour)
1986   int regionNo = 1;
1987   char regionNameBuf[20];
1988   char textNameBuf[20];
1989
1990   wxExpr *regionExpr = NULL;
1991   wxExpr *textExpr = NULL;
1992   sprintf(regionNameBuf, "region%d", regionNo);
1993   sprintf(textNameBuf, "text%d", regionNo);
1994
1995   m_formatted = TRUE;  // Assume text is formatted unless we prove otherwise
1996
1997   while (regionExpr = clause->AttributeValue(regionNameBuf))
1998   {
1999     /*
2000      * Get the region information
2001      *
2002      */
2003
2004     wxString regionName("");
2005     wxString regionText("");
2006     double x = 0.0;
2007     double y = 0.0;
2008     double width = 0.0;
2009     double height = 0.0;
2010     double minWidth = 5.0;
2011     double minHeight = 5.0;
2012     double m_regionProportionX = -1.0;
2013     double m_regionProportionY = -1.0;
2014     int formatMode = FORMAT_NONE;
2015     int fontSize = 10;
2016     int fontFamily = wxSWISS;
2017     int fontStyle = wxNORMAL;
2018     int fontWeight = wxNORMAL;
2019     wxString regionTextColour("");
2020     wxString penColour("");
2021     int penStyle = wxSOLID;
2022
2023     if (regionExpr->Type() == PrologList)
2024     {
2025       wxExpr *nameExpr = regionExpr->Nth(0);
2026       wxExpr *textExpr = regionExpr->Nth(1);
2027       wxExpr *xExpr = regionExpr->Nth(2);
2028       wxExpr *yExpr = regionExpr->Nth(3);
2029       wxExpr *widthExpr = regionExpr->Nth(4);
2030       wxExpr *heightExpr = regionExpr->Nth(5);
2031       wxExpr *minWidthExpr = regionExpr->Nth(6);
2032       wxExpr *minHeightExpr = regionExpr->Nth(7);
2033       wxExpr *propXExpr = regionExpr->Nth(8);
2034       wxExpr *propYExpr = regionExpr->Nth(9);
2035       wxExpr *formatExpr = regionExpr->Nth(10);
2036       wxExpr *sizeExpr = regionExpr->Nth(11);
2037       wxExpr *familyExpr = regionExpr->Nth(12);
2038       wxExpr *styleExpr = regionExpr->Nth(13);
2039       wxExpr *weightExpr = regionExpr->Nth(14);
2040       wxExpr *colourExpr = regionExpr->Nth(15);
2041       wxExpr *penColourExpr = regionExpr->Nth(16);
2042       wxExpr *penStyleExpr = regionExpr->Nth(17);
2043
2044       regionName = nameExpr->StringValue();
2045       regionText = textExpr->StringValue();
2046
2047       x = xExpr->RealValue();
2048       y = yExpr->RealValue();
2049
2050       width = widthExpr->RealValue();
2051       height = heightExpr->RealValue();
2052
2053       minWidth = minWidthExpr->RealValue();
2054       minHeight = minHeightExpr->RealValue();
2055
2056       m_regionProportionX = propXExpr->RealValue();
2057       m_regionProportionY = propYExpr->RealValue();
2058
2059       formatMode = (int) formatExpr->IntegerValue();
2060       fontSize = (int)sizeExpr->IntegerValue();
2061       fontFamily = (int)familyExpr->IntegerValue();
2062       fontStyle = (int)styleExpr->IntegerValue();
2063       fontWeight = (int)weightExpr->IntegerValue();
2064
2065       if (colourExpr)
2066       {
2067         regionTextColour = colourExpr->StringValue();
2068       }
2069       else
2070         regionTextColour = "BLACK";
2071
2072       if (penColourExpr)
2073         penColour = penColourExpr->StringValue();
2074       if (penStyleExpr)
2075         penStyle = (int)penStyleExpr->IntegerValue();
2076     }
2077     wxFont *font = wxTheFontList->FindOrCreateFont(fontSize, fontFamily, fontStyle, fontWeight);
2078
2079     wxShapeRegion *region = new wxShapeRegion;
2080     region->SetProportions(m_regionProportionX, m_regionProportionY);
2081     region->SetFont(font);
2082     region->SetSize(width, height);
2083     region->SetPosition(x, y);
2084     region->SetMinSize(minWidth, minHeight);
2085     region->SetFormatMode(formatMode);
2086     region->SetPenStyle(penStyle);
2087     if (penColour != "")
2088       region->SetPenColour(penColour);
2089
2090     region->m_textColour = regionTextColour;
2091     region->m_regionText = regionText;
2092     region->m_regionName = regionName;
2093
2094     m_regions.Append(region);
2095
2096     /*
2097      * Get the formatted text strings
2098      *
2099      */
2100     textExpr = clause->AttributeValue(textNameBuf);
2101     if (textExpr && (textExpr->Type() == PrologList))
2102     {
2103       wxExpr *node = textExpr->value.first;
2104       while (node)
2105       {
2106         wxExpr *string_expr = node;
2107         double the_x = 0.0;
2108         double the_y = 0.0;
2109         wxString the_string("");
2110
2111         // string_expr can either be a string, or a list of
2112         // 3 elements: x, y, and string.
2113         if (string_expr->Type() == PrologString)
2114         {
2115           the_string = string_expr->StringValue();
2116           m_formatted = FALSE;
2117         }
2118         else if (string_expr->Type() == PrologList)
2119         {
2120           wxExpr *first = string_expr->value.first;
2121           wxExpr *second = first ? first->next : NULL;
2122           wxExpr *third = second ? second->next : NULL;
2123
2124           if (first && second && third &&
2125               (first->Type() == PrologReal || first->Type() == PrologInteger) &&
2126               (second->Type() == PrologReal || second->Type() == PrologInteger) &&
2127               third->Type() == PrologString)
2128           {
2129             if (first->Type() == PrologReal)
2130               the_x = first->RealValue();
2131             else the_x = (double)first->IntegerValue();
2132
2133             if (second->Type() == PrologReal)
2134               the_y = second->RealValue();
2135             else the_y = (double)second->IntegerValue();
2136
2137             the_string = third->StringValue();
2138           }
2139         }
2140         if (the_string)
2141         {
2142           wxShapeTextLine *line =
2143               new wxShapeTextLine(the_x, the_y, (char*) (const char*) the_string);
2144           region->m_formattedText.Append(line);
2145         }
2146         node = node->next;
2147       }
2148     }
2149
2150     regionNo ++;
2151     sprintf(regionNameBuf, "region%d", regionNo);
2152     sprintf(textNameBuf, "text%d", regionNo);
2153   }
2154
2155   // Compatibility: check for no regions (old file).
2156   // Lines and divided rectangles must deal with this compatibility
2157   // theirselves. Composites _may_ not have any regions anyway.
2158   if ((m_regions.Number() == 0) &&
2159       !this->IsKindOf(CLASSINFO(wxLineShape)) && !this->IsKindOf(CLASSINFO(wxDividedShape)) &&
2160       !this->IsKindOf(CLASSINFO(wxCompositeShape)))
2161   {
2162     wxShapeRegion *newRegion = new wxShapeRegion;
2163     newRegion->SetName("0");
2164     m_regions.Append((wxObject *)newRegion);
2165     if (m_text.Number() > 0)
2166     {
2167       newRegion->ClearText();
2168       wxNode *node = m_text.First();
2169       while (node)
2170       {
2171         wxShapeTextLine *textLine = (wxShapeTextLine *)node->Data();
2172         wxNode *next = node->Next();
2173         newRegion->GetFormattedText().Append((wxObject *)textLine);
2174         delete node;
2175         node = next;
2176       }
2177     }
2178   }
2179 }
2180
2181 #endif
2182
2183 void wxShape::Copy(wxShape& copy)
2184 {
2185   copy.m_id = m_id;
2186   copy.m_xpos = m_xpos;
2187   copy.m_ypos = m_ypos;
2188   copy.m_pen = m_pen;
2189   copy.m_brush = m_brush;
2190   copy.m_textColour = m_textColour;
2191   copy.m_centreResize = m_centreResize;
2192   copy.m_attachmentMode = m_attachmentMode;
2193   copy.m_spaceAttachments = m_spaceAttachments;
2194   copy.m_highlighted = m_highlighted;
2195   copy.m_rotation = m_rotation;
2196   copy.m_textColourName = m_textColourName;
2197   copy.m_regionName = m_regionName;
2198
2199   copy.m_sensitivity = m_sensitivity;
2200   copy.m_draggable = m_draggable;
2201   copy.m_fixedWidth = m_fixedWidth;
2202   copy.m_fixedHeight = m_fixedHeight;
2203   copy.m_formatMode = m_formatMode;
2204   copy.m_drawHandles = m_drawHandles;
2205
2206   copy.m_visible = m_visible;
2207   copy.m_shadowMode = m_shadowMode;
2208   copy.m_shadowOffsetX = m_shadowOffsetX;
2209   copy.m_shadowOffsetY = m_shadowOffsetY;
2210   copy.m_shadowBrush = m_shadowBrush;
2211
2212   // Copy text regions
2213   copy.ClearRegions();
2214   wxNode *node = m_regions.First();
2215   while (node)
2216   {
2217     wxShapeRegion *region = (wxShapeRegion *)node->Data();
2218     wxShapeRegion *newRegion = new wxShapeRegion(*region);
2219     copy.m_regions.Append(newRegion);
2220     node = node->Next();
2221   }
2222
2223   // Copy attachments
2224   copy.ClearAttachments();
2225   node = m_attachmentPoints.First();
2226   while (node)
2227   {
2228     wxAttachmentPoint *point = (wxAttachmentPoint *)node->Data();
2229     wxAttachmentPoint *newPoint = new wxAttachmentPoint;
2230     newPoint->m_id = point->m_id;
2231     newPoint->m_x = point->m_x;
2232     newPoint->m_y = point->m_y;
2233     copy.m_attachmentPoints.Append((wxObject *)newPoint);
2234     node = node->Next();
2235   }
2236
2237   // Copy lines
2238   copy.m_lines.Clear();
2239   node = m_lines.First();
2240   while (node)
2241   {
2242     wxLineShape* line = (wxLineShape*) node->Data();
2243     copy.m_lines.Append(line);
2244     node = node->Next();
2245   }
2246 }
2247
2248 // Create and return a new, fully copied object.
2249 wxShape *wxShape::CreateNewCopy(bool resetMapping, bool recompute)
2250 {
2251   if (resetMapping)
2252     oglObjectCopyMapping.Clear();
2253
2254   wxShape* newObject = (wxShape*) GetClassInfo()->CreateObject();
2255
2256   wxASSERT( (newObject != NULL) );
2257   wxASSERT( (newObject->IsKindOf(CLASSINFO(wxShape))) );
2258
2259   Copy(*newObject);
2260
2261   if (GetEventHandler() != this)
2262   {
2263     wxShapeEvtHandler* newHandler = GetEventHandler()->CreateNewCopy();
2264     newObject->SetEventHandler(newHandler);
2265     newObject->SetPreviousHandler(NULL);
2266     newHandler->SetPreviousHandler(newObject);
2267     newHandler->SetShape(newObject);
2268   }
2269
2270   if (recompute)
2271     newObject->Recompute();
2272   return newObject;
2273 }
2274
2275 // Does the copying for this object, including copying event
2276 // handler data if any. Calls the virtual Copy function.
2277 void wxShape::CopyWithHandler(wxShape& copy)
2278 {
2279     Copy(copy);
2280
2281     if (GetEventHandler() != this)
2282     {
2283         wxASSERT( copy.GetEventHandler() != NULL );
2284         wxASSERT( copy.GetEventHandler() != (&copy) );
2285         wxASSERT( GetEventHandler()->GetClassInfo() == copy.GetEventHandler()->GetClassInfo() );
2286         GetEventHandler()->CopyData(* (copy.GetEventHandler()));
2287     }
2288 }
2289
2290
2291 // Default - make 6 control points
2292 void wxShape::MakeControlPoints()
2293 {
2294   double maxX, maxY, minX, minY;
2295
2296   GetBoundingBoxMax(&maxX, &maxY);
2297   GetBoundingBoxMin(&minX, &minY);
2298
2299   double widthMin = (double)(minX + CONTROL_POINT_SIZE + 2);
2300   double heightMin = (double)(minY + CONTROL_POINT_SIZE + 2);
2301
2302   // Offsets from main object
2303   double top = (double)(- (heightMin / 2.0));
2304   double bottom = (double)(heightMin / 2.0 + (maxY - minY));
2305   double left = (double)(- (widthMin / 2.0));
2306   double right = (double)(widthMin / 2.0 + (maxX - minX));
2307
2308   wxControlPoint *control = new wxControlPoint(m_canvas, this, CONTROL_POINT_SIZE, left, top,
2309                                            CONTROL_POINT_DIAGONAL);
2310   m_canvas->AddShape(control);
2311   m_controlPoints.Append(control);
2312
2313   control = new wxControlPoint(m_canvas, this, CONTROL_POINT_SIZE, 0, top,
2314                                            CONTROL_POINT_VERTICAL);
2315   m_canvas->AddShape(control);
2316   m_controlPoints.Append(control);
2317
2318   control = new wxControlPoint(m_canvas, this, CONTROL_POINT_SIZE, right, top,
2319                                            CONTROL_POINT_DIAGONAL);
2320   m_canvas->AddShape(control);
2321   m_controlPoints.Append(control);
2322
2323   control = new wxControlPoint(m_canvas, this, CONTROL_POINT_SIZE, right, 0,
2324                                            CONTROL_POINT_HORIZONTAL);
2325   m_canvas->AddShape(control);
2326   m_controlPoints.Append(control);
2327
2328   control = new wxControlPoint(m_canvas, this, CONTROL_POINT_SIZE, right, bottom,
2329                                            CONTROL_POINT_DIAGONAL);
2330   m_canvas->AddShape(control);
2331   m_controlPoints.Append(control);
2332
2333   control = new wxControlPoint(m_canvas, this, CONTROL_POINT_SIZE, 0, bottom,
2334                                            CONTROL_POINT_VERTICAL);
2335   m_canvas->AddShape(control);
2336   m_controlPoints.Append(control);
2337
2338   control = new wxControlPoint(m_canvas, this, CONTROL_POINT_SIZE, left, bottom,
2339                                            CONTROL_POINT_DIAGONAL);
2340   m_canvas->AddShape(control);
2341   m_controlPoints.Append(control);
2342
2343   control = new wxControlPoint(m_canvas, this, CONTROL_POINT_SIZE, left, 0,
2344                                            CONTROL_POINT_HORIZONTAL);
2345   m_canvas->AddShape(control);
2346   m_controlPoints.Append(control);
2347
2348 }
2349
2350 void wxShape::MakeMandatoryControlPoints()
2351 {
2352   wxNode *node = m_children.First();
2353   while (node)
2354   {
2355     wxShape *child = (wxShape *)node->Data();
2356     child->MakeMandatoryControlPoints();
2357     node = node->Next();
2358   }
2359 }
2360
2361 void wxShape::ResetMandatoryControlPoints()
2362 {
2363   wxNode *node = m_children.First();
2364   while (node)
2365   {
2366     wxShape *child = (wxShape *)node->Data();
2367     child->ResetMandatoryControlPoints();
2368     node = node->Next();
2369   }
2370 }
2371
2372 void wxShape::ResetControlPoints()
2373 {
2374   ResetMandatoryControlPoints();
2375
2376   if (m_controlPoints.Number() < 1)
2377     return;
2378
2379   double maxX, maxY, minX, minY;
2380
2381   GetBoundingBoxMax(&maxX, &maxY);
2382   GetBoundingBoxMin(&minX, &minY);
2383
2384   double widthMin = (double)(minX + CONTROL_POINT_SIZE + 2);
2385   double heightMin = (double)(minY + CONTROL_POINT_SIZE + 2);
2386
2387   // Offsets from main object
2388   double top = (double)(- (heightMin / 2.0));
2389   double bottom = (double)(heightMin / 2.0 + (maxY - minY));
2390   double left = (double)(- (widthMin / 2.0));
2391   double right = (double)(widthMin / 2.0 + (maxX - minX));
2392
2393   wxNode *node = m_controlPoints.First();
2394   wxControlPoint *control = (wxControlPoint *)node->Data();
2395   control->m_xoffset = left; control->m_yoffset = top;
2396
2397   node = node->Next(); control = (wxControlPoint *)node->Data();
2398   control->m_xoffset = 0; control->m_yoffset = top;
2399
2400   node = node->Next(); control = (wxControlPoint *)node->Data();
2401   control->m_xoffset = right; control->m_yoffset = top;
2402
2403   node = node->Next(); control = (wxControlPoint *)node->Data();
2404   control->m_xoffset = right; control->m_yoffset = 0;
2405
2406   node = node->Next(); control = (wxControlPoint *)node->Data();
2407   control->m_xoffset = right; control->m_yoffset = bottom;
2408
2409   node = node->Next(); control = (wxControlPoint *)node->Data();
2410   control->m_xoffset = 0; control->m_yoffset = bottom;
2411
2412   node = node->Next(); control = (wxControlPoint *)node->Data();
2413   control->m_xoffset = left; control->m_yoffset = bottom;
2414
2415   node = node->Next(); control = (wxControlPoint *)node->Data();
2416   control->m_xoffset = left; control->m_yoffset = 0;
2417 }
2418
2419 void wxShape::DeleteControlPoints(wxDC *dc)
2420 {
2421   wxNode *node = m_controlPoints.First();
2422   while (node)
2423   {
2424     wxControlPoint *control = (wxControlPoint *)node->Data();
2425     if (dc)
2426         control->GetEventHandler()->OnErase(*dc);
2427     m_canvas->RemoveShape(control);
2428     delete control;
2429     delete node;
2430     node = m_controlPoints.First();
2431   }
2432   // Children of divisions are contained objects,
2433   // so stop here
2434   if (!IsKindOf(CLASSINFO(wxDivisionShape)))
2435   {
2436     node = m_children.First();
2437     while (node)
2438     {
2439       wxShape *child = (wxShape *)node->Data();
2440       child->DeleteControlPoints(dc);
2441       node = node->Next();
2442     }
2443   }
2444 }
2445
2446 void wxShape::OnDrawControlPoints(wxDC& dc)
2447 {
2448   if (!m_drawHandles)
2449     return;
2450
2451   dc.SetBrush(wxBLACK_BRUSH);
2452   dc.SetPen(wxBLACK_PEN);
2453
2454   wxNode *node = m_controlPoints.First();
2455   while (node)
2456   {
2457     wxControlPoint *control = (wxControlPoint *)node->Data();
2458     control->Draw(dc);
2459     node = node->Next();
2460   }
2461   // Children of divisions are contained objects,
2462   // so stop here.
2463   // This test bypasses the type facility for speed
2464   // (critical when drawing)
2465   if (!IsKindOf(CLASSINFO(wxDivisionShape)))
2466   {
2467     node = m_children.First();
2468     while (node)
2469     {
2470       wxShape *child = (wxShape *)node->Data();
2471       child->GetEventHandler()->OnDrawControlPoints(dc);
2472       node = node->Next();
2473     }
2474   }
2475 }
2476
2477 void wxShape::OnEraseControlPoints(wxDC& dc)
2478 {
2479   wxNode *node = m_controlPoints.First();
2480   while (node)
2481   {
2482     wxControlPoint *control = (wxControlPoint *)node->Data();
2483     control->Erase(dc);
2484     node = node->Next();
2485   }
2486   if (!IsKindOf(CLASSINFO(wxDivisionShape)))
2487   {
2488     node = m_children.First();
2489     while (node)
2490     {
2491       wxShape *child = (wxShape *)node->Data();
2492       child->GetEventHandler()->OnEraseControlPoints(dc);
2493       node = node->Next();
2494     }
2495   }
2496 }
2497
2498 void wxShape::Select(bool select, wxDC* dc)
2499 {
2500   m_selected = select;
2501   if (select)
2502   {
2503     MakeControlPoints();
2504     // Children of divisions are contained objects,
2505     // so stop here
2506     if (!IsKindOf(CLASSINFO(wxDivisionShape)))
2507     {
2508       wxNode *node = m_children.First();
2509       while (node)
2510       {
2511         wxShape *child = (wxShape *)node->Data();
2512         child->MakeMandatoryControlPoints();
2513         node = node->Next();
2514       }
2515     }
2516     if (dc)
2517         GetEventHandler()->OnDrawControlPoints(*dc);
2518   }
2519   if (!select)
2520   {
2521     DeleteControlPoints(dc);
2522     if (!IsKindOf(CLASSINFO(wxDivisionShape)))
2523     {
2524       wxNode *node = m_children.First();
2525       while (node)
2526       {
2527         wxShape *child = (wxShape *)node->Data();
2528         child->DeleteControlPoints(dc);
2529         node = node->Next();
2530       }
2531     }
2532   }
2533 }
2534
2535 bool wxShape::Selected() const
2536 {
2537   return m_selected;
2538 }
2539
2540 bool wxShape::AncestorSelected() const
2541 {
2542   if (m_selected) return TRUE;
2543   if (!GetParent())
2544     return FALSE;
2545   else
2546     return GetParent()->AncestorSelected();
2547 }
2548
2549 int wxShape::GetNumberOfAttachments()
2550 {
2551   // Should return the MAXIMUM attachment point id here,
2552   // so higher-level functions can iterate through all attachments,
2553   // even if they're not contiguous.
2554   if (m_attachmentPoints.Number() == 0)
2555     return 4;
2556   else
2557   {
2558     int maxN = 3;
2559     wxNode *node = m_attachmentPoints.First();
2560     while (node)
2561     {
2562       wxAttachmentPoint *point = (wxAttachmentPoint *)node->Data();
2563       if (point->m_id > maxN)
2564         maxN = point->m_id;
2565       node = node->Next();
2566     }
2567     return maxN+1;;
2568   }
2569 }
2570
2571 bool wxShape::AttachmentIsValid(int attachment)
2572 {
2573   if ((attachment >= 0) && (attachment < 4))
2574     return TRUE;
2575
2576   wxNode *node = m_attachmentPoints.First();
2577   while (node)
2578   {
2579     wxAttachmentPoint *point = (wxAttachmentPoint *)node->Data();
2580     if (point->m_id == attachment)
2581       return TRUE;
2582     node = node->Next();
2583   }
2584   return FALSE;
2585 }
2586
2587 bool wxShape::GetAttachmentPosition(int attachment, double *x, double *y,
2588                                          int nth, int no_arcs, wxLineShape *line)
2589 {
2590   if (!m_attachmentMode)
2591   {
2592     *x = m_xpos; *y = m_ypos;
2593     return TRUE;
2594   }
2595   else
2596   {
2597     wxNode *node = m_attachmentPoints.First();
2598     while (node)
2599     {
2600       wxAttachmentPoint *point = (wxAttachmentPoint *)node->Data();
2601       if (point->m_id == attachment)
2602       {
2603         *x = (double)(m_xpos + point->m_x);
2604         *y = (double)(m_ypos + point->m_y);
2605         return TRUE;
2606       }
2607       node = node->Next();
2608     }
2609     *x = m_xpos; *y = m_ypos;
2610     return FALSE;
2611   }
2612 }
2613
2614 void wxShape::GetBoundingBoxMax(double *w, double *h)
2615 {
2616   double ww, hh;
2617   GetBoundingBoxMin(&ww, &hh);
2618   if (m_shadowMode != SHADOW_NONE)
2619   {
2620     ww += m_shadowOffsetX;
2621     hh += m_shadowOffsetY;
2622   }
2623   *w = ww;
2624   *h = hh;
2625 }
2626
2627 // Returns TRUE if image is a descendant of this composite
2628 bool wxShape::HasDescendant(wxShape *image)
2629 {
2630   if (image == this)
2631     return TRUE;
2632   wxNode *node = m_children.First();
2633   while (node)
2634   {
2635     wxShape *child = (wxShape *)node->Data();
2636     bool ans = child->HasDescendant(image);
2637     if (ans)
2638       return TRUE;
2639     node = node->Next();
2640   }
2641   return FALSE;
2642 }
2643
2644 // Clears points from a list of wxRealPoints, and clears list
2645 void wxShape::ClearPointList(wxList& list)
2646 {
2647     wxNode* node = list.First();
2648     while (node)
2649     {
2650         wxRealPoint* pt = (wxRealPoint*) node->Data();
2651         delete pt;
2652
2653         node = node->Next();
2654     }
2655     list.Clear();
2656 }
2657
2658 // Assuming the attachment lies along a vertical or horizontal line,
2659 // calculate the position on that point.
2660 wxRealPoint wxShape::CalcSimpleAttachment(const wxRealPoint& pt1, const wxRealPoint& pt2,
2661     int nth, int noArcs, wxLineShape* line)
2662 {
2663     bool isEnd = (line && line->IsEnd(this));
2664
2665     // Are we horizontal or vertical?
2666     bool isHorizontal = (oglRoughlyEqual(pt1.y, pt2.y) == TRUE);
2667
2668     double x, y;
2669
2670     if (isHorizontal)
2671     {
2672         wxRealPoint firstPoint, secondPoint;
2673         if (pt1.x > pt2.x)
2674         {
2675             firstPoint = pt2;
2676             secondPoint = pt1;
2677         }
2678         else
2679         {
2680             firstPoint = pt1;
2681             secondPoint = pt2;
2682         }
2683
2684         if (m_spaceAttachments)
2685         {
2686           if (line && (line->GetAlignmentType(isEnd) == LINE_ALIGNMENT_TO_NEXT_HANDLE))
2687           {
2688             // Align line according to the next handle along
2689             wxRealPoint *point = line->GetNextControlPoint(this);
2690             if (point->x < firstPoint.x)
2691               x = firstPoint.x;
2692             else if (point->x > secondPoint.x)
2693               x = secondPoint.x;
2694             else
2695               x = point->x;
2696           }
2697           else
2698             x = firstPoint.x + (nth + 1)*(secondPoint.x - firstPoint.x)/(noArcs + 1);
2699         }
2700         else x = (secondPoint.x - firstPoint.x)/2.0; // Midpoint
2701
2702         y = pt1.y;
2703     }
2704     else
2705     {
2706         wxASSERT( oglRoughlyEqual(pt1.x, pt2.x) == TRUE );
2707
2708         wxRealPoint firstPoint, secondPoint;
2709         if (pt1.y > pt2.y)
2710         {
2711             firstPoint = pt2;
2712             secondPoint = pt1;
2713         }
2714         else
2715         {
2716             firstPoint = pt1;
2717             secondPoint = pt2;
2718         }
2719
2720         if (m_spaceAttachments)
2721         {
2722           if (line && (line->GetAlignmentType(isEnd) == LINE_ALIGNMENT_TO_NEXT_HANDLE))
2723           {
2724             // Align line according to the next handle along
2725             wxRealPoint *point = line->GetNextControlPoint(this);
2726             if (point->y < firstPoint.y)
2727               y = firstPoint.y;
2728             else if (point->y > secondPoint.y)
2729               y = secondPoint.y;
2730             else
2731               y = point->y;
2732           }
2733           else
2734             y = firstPoint.y + (nth + 1)*(secondPoint.y - firstPoint.y)/(noArcs + 1);
2735         }
2736         else y = (secondPoint.y - firstPoint.y)/2.0; // Midpoint
2737
2738         x = pt1.x;
2739     }
2740
2741     return wxRealPoint(x, y);
2742 }
2743
2744 // Return the zero-based position in m_lines of line.
2745 int wxShape::GetLinePosition(wxLineShape* line)
2746 {
2747     int i = 0;
2748     for (i = 0; i < m_lines.Number(); i++)
2749         if ((wxLineShape*) (m_lines.Nth(i)->Data()) == line)
2750             return i;
2751
2752     return 0;
2753 }
2754