contrib/src/ogl/divided.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        divided.cpp
   3 // Purpose:     wxDividedShape class
   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 "divided.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 #if wxUSE_PROLOGIO
  28 #include <wx/deprecated/wxexpr.h>
  29 #endif
  30
  31 #include "wx/ogl/ogl.h"
  32
  33
  34 class wxDividedShapeControlPoint: public wxControlPoint
  35 {
  36  DECLARE_DYNAMIC_CLASS(wxDividedShapeControlPoint)
  37  private:
  38   int regionId;
  39  public:
  40   wxDividedShapeControlPoint() { regionId = 0; }
  41   wxDividedShapeControlPoint(wxShapeCanvas *the_canvas, wxShape *object, int region,
  42                             double size, double the_xoffset, double the_yoffset, int the_type);
  43   ~wxDividedShapeControlPoint();
  44
  45   void OnDragLeft(bool draw, double x, double y, int keys=0, int attachment = 0);
  46   void OnBeginDragLeft(double x, double y, int keys=0, int attachment = 0);
  47   void OnEndDragLeft(double x, double y, int keys=0, int attachment = 0);
  48 };
  49
  50 IMPLEMENT_DYNAMIC_CLASS(wxDividedShapeControlPoint, wxControlPoint)
  51
  52 /*
  53  * Divided object
  54  *
  55  */
  56
  57 IMPLEMENT_DYNAMIC_CLASS(wxDividedShape, wxRectangleShape)
  58
  59 wxDividedShape::wxDividedShape(double w, double h): wxRectangleShape(w, h)
  60 {
  61   ClearRegions();
  62 }
  63
  64 wxDividedShape::~wxDividedShape()
  65 {
  66 }
  67
  68 void wxDividedShape::OnDraw(wxDC& dc)
  69 {
  70   wxRectangleShape::OnDraw(dc);
  71 }
  72
  73 void wxDividedShape::OnDrawContents(wxDC& dc)
  74 {
  75   double defaultProportion = (double)(GetRegions().GetCount() > 0 ? (1.0/((double)(GetRegions().GetCount()))) : 0.0);
  76   double currentY = (double)(m_ypos - (m_height / 2.0));
  77   double maxY = (double)(m_ypos + (m_height / 2.0));
  78
  79   double leftX = (double)(m_xpos - (m_width / 2.0));
  80   double rightX = (double)(m_xpos + (m_width / 2.0));
  81
  82   if (m_pen) dc.SetPen(* m_pen);
  83
  84   dc.SetTextForeground(m_textColour);
  85
  86 #ifdef __WXMSW__
  87   // For efficiency, don't do this under X - doesn't make
  88   // any visible difference for our purposes.
  89   if (m_brush)
  90     dc.SetTextBackground(m_brush->GetColour());
  91 #endif
  92 /*
  93   if (!formatted)
  94   {
  95     FormatRegionText();
  96     formatted = TRUE;
  97   }
  98 */
  99   if (GetDisableLabel()) return;
 100
 101   double xMargin = 2;
 102   double yMargin = 2;
 103   dc.SetBackgroundMode(wxTRANSPARENT);
 104
 105   wxNode *node = GetRegions().GetFirst();
 106   while (node)
 107   {
 108     wxShapeRegion *region = (wxShapeRegion *)node->GetData();
 109     dc.SetFont(* region->GetFont());
 110     dc.SetTextForeground(region->GetActualColourObject());
 111
 112     double proportion =
 113       region->m_regionProportionY < 0.0 ? defaultProportion : region->m_regionProportionY;
 114
 115     double y = currentY + m_height*proportion;
 116     double actualY = maxY < y ? maxY : y;
 117
 118     double centreX = m_xpos;
 119     double centreY = (double)(currentY + (actualY - currentY)/2.0);
 120
 121     oglDrawFormattedText(dc, &region->m_formattedText,
 122              (double)(centreX), (double)(centreY), (double)(m_width-2*xMargin), (double)(actualY - currentY - 2*yMargin),
 123              region->m_formatMode);
 124     if ((y <= maxY) && (node->GetNext()))
 125     {
 126       wxPen *regionPen = region->GetActualPen();
 127       if (regionPen)
 128       {
 129         dc.SetPen(* regionPen);
 130         dc.DrawLine(WXROUND(leftX), WXROUND(y), WXROUND(rightX), WXROUND(y));
 131       }
 132     }
 133
 134     currentY = actualY;
 135
 136     node = node->GetNext();
 137   }
 138 }
 139
 140 void wxDividedShape::SetSize(double w, double h, bool WXUNUSED(recursive))
 141 {
 142   SetAttachmentSize(w, h);
 143   m_width = w;
 144   m_height = h;
 145   SetRegionSizes();
 146 }
 147
 148 void wxDividedShape::SetRegionSizes()
 149 {
 150   if (GetRegions().GetCount() == 0)
 151     return;
 152
 153   double defaultProportion = (double)(GetRegions().GetCount() > 0 ? (1.0/((double)(GetRegions().GetCount()))) : 0.0);
 154   double currentY = (double)(m_ypos - (m_height / 2.0));
 155   double maxY = (double)(m_ypos + (m_height / 2.0));
 156
 157 //  double leftX = (double)(m_xpos - (m_width / 2.0));
 158 //  double rightX = (double)(m_xpos + (m_width / 2.0));
 159
 160   wxNode *node = GetRegions().GetFirst();
 161   while (node)
 162   {
 163     wxShapeRegion *region = (wxShapeRegion *)node->GetData();
 164     double proportion =
 165       region->m_regionProportionY <= 0.0 ? defaultProportion : region->m_regionProportionY;
 166
 167     double sizeY = (double)proportion*m_height;
 168     double y = currentY + sizeY;
 169     double actualY = maxY < y ? maxY : y;
 170
 171     double centreY = (double)(currentY + (actualY - currentY)/2.0);
 172
 173     region->SetSize(m_width, sizeY);
 174     region->SetPosition(0.0, (double)(centreY - m_ypos));
 175     currentY = actualY;
 176     node = node->GetNext();
 177   }
 178 }
 179
 180 // Attachment points correspond to regions in the divided box
 181 bool wxDividedShape::GetAttachmentPosition(int attachment, double *x, double *y, int nth, int no_arcs,
 182   wxLineShape *line)
 183 {
 184   int totalNumberAttachments = (GetRegions().GetCount() * 2) + 2;
 185   if ((GetAttachmentMode() == ATTACHMENT_MODE_NONE) || (attachment >= totalNumberAttachments))
 186   {
 187     return wxShape::GetAttachmentPosition(attachment, x, y, nth, no_arcs);
 188   }
 189
 190   int n = GetRegions().GetCount();
 191   bool isEnd = (line && line->IsEnd(this));
 192
 193   double left = (double)(m_xpos - m_width/2.0);
 194   double right = (double)(m_xpos + m_width/2.0);
 195   double top = (double)(m_ypos - m_height/2.0);
 196   double bottom = (double)(m_ypos + m_height/2.0);
 197
 198   // Zero is top, n+1 is bottom.
 199   if (attachment == 0)
 200   {
 201     *y = top;
 202     if (m_spaceAttachments)
 203     {
 204       if (line && (line->GetAlignmentType(isEnd) == LINE_ALIGNMENT_TO_NEXT_HANDLE))
 205       {
 206         // Align line according to the next handle along
 207         wxRealPoint *point = line->GetNextControlPoint(this);
 208         if (point->x < left)
 209           *x = left;
 210         else if (point->x > right)
 211           *x = right;
 212         else
 213           *x = point->x;
 214       }
 215       else
 216         *x = left + (nth + 1)*m_width/(no_arcs + 1);
 217     }
 218     else
 219       *x = m_xpos;
 220   }
 221   else if (attachment == (n+1))
 222   {
 223     *y = bottom;
 224     if (m_spaceAttachments)
 225     {
 226       if (line && (line->GetAlignmentType(isEnd) == LINE_ALIGNMENT_TO_NEXT_HANDLE))
 227       {
 228         // Align line according to the next handle along
 229         wxRealPoint *point = line->GetNextControlPoint(this);
 230         if (point->x < left)
 231           *x = left;
 232         else if (point->x > right)
 233           *x = right;
 234         else
 235           *x = point->x;
 236       }
 237       else
 238         *x = left + (nth + 1)*m_width/(no_arcs + 1);
 239     }
 240     else
 241       *x = m_xpos;
 242   }
 243   // Left or right.
 244   else
 245   {
 246     bool isLeft = !(attachment < (n+1));
 247     int i = (isLeft) ? (totalNumberAttachments - attachment - 1) : (attachment-1);
 248     wxNode *node = GetRegions().Item(i);
 249     if (node)
 250     {
 251       wxShapeRegion *region = (wxShapeRegion *)node->GetData();
 252
 253       if (isLeft)
 254         *x = left;
 255       else
 256         *x = right;
 257
 258       // Calculate top and bottom of region
 259       top = (double)((m_ypos + region->m_y) - (region->m_height/2.0));
 260       bottom = (double)((m_ypos + region->m_y) + (region->m_height/2.0));
 261
 262       // Assuming we can trust the absolute size and
 263       // position of these regions...
 264       if (m_spaceAttachments)
 265       {
 266         if (line && (line->GetAlignmentType(isEnd) == LINE_ALIGNMENT_TO_NEXT_HANDLE))
 267         {
 268           // Align line according to the next handle along
 269           wxRealPoint *point = line->GetNextControlPoint(this);
 270           if (point->y < bottom)
 271             *y = bottom;
 272           else if (point->y > top)
 273             *y = top;
 274           else
 275             *y = point->y;
 276         }
 277         else
 278 //          *y = (double)(((m_ypos + region->m_y) - (region->m_height/2.0)) + (nth + 1)*region->m_height/(no_arcs+1));
 279           *y = (double)(top + (nth + 1)*region->m_height/(no_arcs+1));
 280       }
 281       else
 282         *y = (double)(m_ypos + region->m_y);
 283     }
 284     else
 285     {
 286       *x = m_xpos;
 287       *y = m_ypos;
 288       return FALSE;
 289     }
 290   }
 291   return TRUE;
 292 }
 293
 294 int wxDividedShape::GetNumberOfAttachments() const
 295 {
 296   // There are two attachments for each region (left and right),
 297   // plus one on the top and one on the bottom.
 298   int n = (GetRegions().GetCount() * 2) + 2;
 299
 300   int maxN = n - 1;
 301   wxNode *node = m_attachmentPoints.GetFirst();
 302   while (node)
 303   {
 304     wxAttachmentPoint *point = (wxAttachmentPoint *)node->GetData();
 305     if (point->m_id > maxN)
 306       maxN = point->m_id;
 307     node = node->GetNext();
 308   }
 309   return maxN + 1;
 310 }
 311
 312 bool wxDividedShape::AttachmentIsValid(int attachment) const
 313 {
 314   int totalNumberAttachments = (GetRegions().GetCount() * 2) + 2;
 315   if (attachment >= totalNumberAttachments)
 316   {
 317     return wxShape::AttachmentIsValid(attachment);
 318   }
 319   else if (attachment >= 0)
 320     return TRUE;
 321   else
 322     return FALSE;
 323 }
 324
 325 void wxDividedShape::Copy(wxShape& copy)
 326 {
 327   wxRectangleShape::Copy(copy);
 328 }
 329
 330 // Region operations
 331
 332 void wxDividedShape::MakeControlPoints()
 333 {
 334   wxRectangleShape::MakeControlPoints();
 335
 336   MakeMandatoryControlPoints();
 337 }
 338
 339 void wxDividedShape::MakeMandatoryControlPoints()
 340 {
 341   double currentY = (double)(GetY() - (m_height / 2.0));
 342   double maxY = (double)(GetY() + (m_height / 2.0));
 343
 344   wxNode *node = GetRegions().GetFirst();
 345   int i = 0;
 346   while (node)
 347   {
 348     wxShapeRegion *region = (wxShapeRegion *)node->GetData();
 349
 350     double proportion = region->m_regionProportionY;
 351
 352     double y = currentY + m_height*proportion;
 353     double actualY = (double)(maxY < y ? maxY : y);
 354
 355     if (node->GetNext())
 356     {
 357       wxDividedShapeControlPoint *controlPoint =
 358         new wxDividedShapeControlPoint(m_canvas, this, i, CONTROL_POINT_SIZE, 0.0, (double)(actualY - GetY()), 0);
 359       m_canvas->AddShape(controlPoint);
 360       m_controlPoints.Append(controlPoint);
 361     }
 362     currentY = actualY;
 363     i ++;
 364     node = node->GetNext();
 365   }
 366 }
 367
 368 void wxDividedShape::ResetControlPoints()
 369 {
 370   // May only have the region handles, (n - 1) of them.
 371   if (m_controlPoints.GetCount() > (GetRegions().GetCount() - 1))
 372     wxRectangleShape::ResetControlPoints();
 373
 374   ResetMandatoryControlPoints();
 375 }
 376
 377 void wxDividedShape::ResetMandatoryControlPoints()
 378 {
 379   double currentY = (double)(GetY() - (m_height / 2.0));
 380   double maxY = (double)(GetY() + (m_height / 2.0));
 381
 382   wxNode *node = m_controlPoints.GetFirst();
 383   int i = 0;
 384   while (node)
 385   {
 386     wxControlPoint *controlPoint = (wxControlPoint *)node->GetData();
 387     if (controlPoint->IsKindOf(CLASSINFO(wxDividedShapeControlPoint)))
 388     {
 389       wxNode *node1 = GetRegions().Item(i);
 390       wxShapeRegion *region = (wxShapeRegion *)node1->GetData();
 391
 392       double proportion = region->m_regionProportionY;
 393
 394       double y = currentY + m_height*proportion;
 395       double actualY = (double)(maxY < y ? maxY : y);
 396
 397       controlPoint->m_xoffset = 0.0;
 398       controlPoint->m_yoffset = (double)(actualY - GetY());
 399       currentY = actualY;
 400       i ++;
 401     }
 402     node = node->GetNext();
 403   }
 404 }
 405
 406 #if wxUSE_PROLOGIO
 407 void wxDividedShape::WriteAttributes(wxExpr *clause)
 408 {
 409   wxRectangleShape::WriteAttributes(clause);
 410 }
 411
 412 void wxDividedShape::ReadAttributes(wxExpr *clause)
 413 {
 414   wxRectangleShape::ReadAttributes(clause);
 415 }
 416 #endif
 417
 418 /*
 419  * Edit the division colour/style
 420  *
 421  */
 422
 423 void wxDividedShape::EditRegions()
 424 {
 425   wxMessageBox(wxT("EditRegions() is unimplemented."), wxT("OGL"), wxOK);
 426
 427   // TODO
 428 #if 0
 429   if (GetRegions().GetCount() < 2)
 430     return;
 431
 432   wxBeginBusyCursor();
 433
 434   GraphicsForm *form = new GraphicsForm("Divided nodes");
 435   // Need an array to store all the style strings,
 436   // since they need to be converted to integers
 437   char **styleStrings = new char *[GetRegions().GetCount()];
 438   for (int j = 0; j < GetRegions().GetCount(); j++)
 439     styleStrings[j] = NULL;
 440
 441   int i = 0;
 442   wxNode *node = GetRegions().GetFirst();
 443   while (node && node->GetNext())
 444   {
 445     wxShapeRegion *region = (wxShapeRegion *)node->GetData();
 446     char buf[50];
 447     sprintf(buf, "Region %d", (i+1));
 448     form->Add(wxMakeFormMessage(buf));
 449     form->Add(wxMakeFormNewLine());
 450
 451     form->Add(wxMakeFormString("Colour", &region->penColour, wxFORM_CHOICE,
 452               new wxList(wxMakeConstraintStrings(
 453     "Invisible"        ,
 454     "BLACK"            ,
 455     "BLUE"             ,
 456     "BROWN"            ,
 457     "CORAL"            ,
 458     "CYAN"             ,
 459     "DARK GREY"        ,
 460     "DARK GREEN"       ,
 461     "DIM GREY"         ,
 462     "GREY"             ,
 463     "GREEN"            ,
 464     "LIGHT BLUE"       ,
 465     "LIGHT GREY"       ,
 466     "MAGENTA"          ,
 467     "MAROON"           ,
 468     "NAVY"             ,
 469     "ORANGE"           ,
 470     "PURPLE"           ,
 471     "RED"              ,
 472     "TURQUOISE"        ,
 473     "VIOLET"           ,
 474     "WHITE"            ,
 475     "YELLOW"           ,
 476     NULL),
 477     NULL), NULL, wxVERTICAL, 150));
 478
 479     char *styleString = NULL;
 480     switch (region->penStyle)
 481     {
 482       case wxSHORT_DASH:
 483         styleString = "Short Dash";
 484         break;
 485       case wxLONG_DASH:
 486         styleString = "Long Dash";
 487         break;
 488       case wxDOT:
 489         styleString = "Dot";
 490         break;
 491       case wxDOT_DASH:
 492         styleString = "Dot Dash";
 493         break;
 494       case wxSOLID:
 495       default:
 496         styleString = "Solid";
 497         break;
 498     }
 499     styleStrings[i] = copystring(styleString);
 500     form->Add(wxMakeFormString("Style", &(styleStrings[i]), wxFORM_CHOICE,
 501               new wxList(wxMakeConstraintStrings(
 502     "Solid"            ,
 503     "Short Dash"       ,
 504     "Long Dash"        ,
 505     "Dot"              ,
 506     "Dot Dash"         ,
 507     NULL),
 508     NULL), NULL, wxVERTICAL, 100));
 509     node = node->GetNext();
 510     i ++;
 511     if (node && node->GetNext())
 512       form->Add(wxMakeFormNewLine());
 513   }
 514   wxDialogBox *dialog = new wxDialogBox(m_canvas->GetParent(), "Divided object properties", 10, 10, 500, 500);
 515   if (GraphicsLabelFont)
 516     dialog->SetLabelFont(GraphicsLabelFont);
 517   if (GraphicsButtonFont)
 518     dialog->SetButtonFont(GraphicsButtonFont);
 519   form->AssociatePanel(dialog);
 520   form->dialog = dialog;
 521
 522   dialog->Fit();
 523   dialog->Centre(wxBOTH);
 524
 525   wxEndBusyCursor();
 526
 527   dialog->Show(TRUE);
 528
 529   node = GetRegions().GetFirst();
 530   i = 0;
 531   while (node)
 532   {
 533     wxShapeRegion *region = (wxShapeRegion *)node->GetData();
 534
 535     if (styleStrings[i])
 536     {
 537       if (strcmp(styleStrings[i], "Solid") == 0)
 538         region->penStyle = wxSOLID;
 539       else if (strcmp(styleStrings[i], "Dot") == 0)
 540         region->penStyle = wxDOT;
 541       else if (strcmp(styleStrings[i], "Short Dash") == 0)
 542         region->penStyle = wxSHORT_DASH;
 543       else if (strcmp(styleStrings[i], "Long Dash") == 0)
 544         region->penStyle = wxLONG_DASH;
 545       else if (strcmp(styleStrings[i], "Dot Dash") == 0)
 546         region->penStyle = wxDOT_DASH;
 547       delete[] styleStrings[i];
 548     }
 549     region->m_actualPenObject = NULL;
 550     node = node->GetNext();
 551     i ++;
 552   }
 553   delete[] styleStrings;
 554   Draw(dc);
 555 #endif
 556 }
 557
 558 void wxDividedShape::OnRightClick(double x, double y, int keys, int attachment)
 559 {
 560   if (keys & KEY_CTRL)
 561   {
 562     EditRegions();
 563   }
 564   else
 565   {
 566     wxRectangleShape::OnRightClick(x, y, keys, attachment);
 567   }
 568 }
 569
 570 wxDividedShapeControlPoint::wxDividedShapeControlPoint(wxShapeCanvas *the_canvas, wxShape *object,
 571   int region, double size, double the_m_xoffset, double the_m_yoffset, int the_type):
 572     wxControlPoint(the_canvas, object, size, the_m_xoffset, the_m_yoffset, the_type)
 573 {
 574   regionId = region;
 575 }
 576
 577 wxDividedShapeControlPoint::~wxDividedShapeControlPoint()
 578 {
 579 }
 580
 581 // Implement resizing of divided object division
 582 void wxDividedShapeControlPoint::OnDragLeft(bool WXUNUSED(draw), double WXUNUSED(x), double y, int WXUNUSED(keys), int WXUNUSED(attachment))
 583 {
 584     wxClientDC dc(GetCanvas());
 585     GetCanvas()->PrepareDC(dc);
 586
 587     dc.SetLogicalFunction(OGLRBLF);
 588     wxPen dottedPen(wxColour(0, 0, 0), 1, wxDOT);
 589     dc.SetPen(dottedPen);
 590     dc.SetBrush((* wxTRANSPARENT_BRUSH));
 591
 592     wxDividedShape *dividedObject = (wxDividedShape *)m_shape;
 593     double x1 = (double)(dividedObject->GetX() - (dividedObject->GetWidth()/2.0));
 594     double y1 = y;
 595     double x2 = (double)(dividedObject->GetX() + (dividedObject->GetWidth()/2.0));
 596     double y2 = y;
 597     dc.DrawLine(WXROUND(x1), WXROUND(y1), WXROUND(x2), WXROUND(y2));
 598 }
 599
 600 void wxDividedShapeControlPoint::OnBeginDragLeft(double WXUNUSED(x), double y, int WXUNUSED(keys), int WXUNUSED(attachment))
 601 {
 602     wxClientDC dc(GetCanvas());
 603     GetCanvas()->PrepareDC(dc);
 604
 605     wxDividedShape *dividedObject = (wxDividedShape *)m_shape;
 606     dc.SetLogicalFunction(OGLRBLF);
 607     wxPen dottedPen(wxColour(0, 0, 0), 1, wxDOT);
 608     dc.SetPen(dottedPen);
 609     dc.SetBrush((* wxTRANSPARENT_BRUSH));
 610
 611     double x1 = (double)(dividedObject->GetX() - (dividedObject->GetWidth()/2.0));
 612     double y1 = y;
 613     double x2 = (double)(dividedObject->GetX() + (dividedObject->GetWidth()/2.0));
 614     double y2 = y;
 615     dc.DrawLine(WXROUND(x1), WXROUND(y1), WXROUND(x2), WXROUND(y2));
 616     m_canvas->CaptureMouse();
 617 }
 618
 619 void wxDividedShapeControlPoint::OnEndDragLeft(double WXUNUSED(x), double y, int WXUNUSED(keys), int WXUNUSED(attachment))
 620 {
 621     wxClientDC dc(GetCanvas());
 622     GetCanvas()->PrepareDC(dc);
 623
 624     wxDividedShape *dividedObject = (wxDividedShape *)m_shape;
 625     wxNode *node = dividedObject->GetRegions().Item(regionId);
 626     if (!node)
 627     return;
 628
 629     wxShapeRegion *thisRegion = (wxShapeRegion *)node->GetData();
 630     wxShapeRegion *nextRegion = NULL; // Region below this one
 631
 632     dc.SetLogicalFunction(wxCOPY);
 633
 634     m_canvas->ReleaseMouse();
 635
 636     // Find the old top and bottom of this region,
 637     // and calculate the new proportion for this region
 638     // if legal.
 639
 640     double currentY = (double)(dividedObject->GetY() - (dividedObject->GetHeight() / 2.0));
 641     double maxY = (double)(dividedObject->GetY() + (dividedObject->GetHeight() / 2.0));
 642
 643     // Save values
 644     double thisRegionTop = 0.0;
 645     #if 0
 646     // this variable is not readed later
 647     double thisRegionBottom = 0.0;
 648     #endif
 649     double nextRegionBottom = 0.0;
 650
 651     node = dividedObject->GetRegions().GetFirst();
 652     while (node)
 653     {
 654       wxShapeRegion *region = (wxShapeRegion *)node->GetData();
 655
 656       double proportion = region->m_regionProportionY;
 657       double yy = currentY + (dividedObject->GetHeight()*proportion);
 658       double actualY = (double)(maxY < yy ? maxY : yy);
 659
 660       if (region == thisRegion)
 661       {
 662         thisRegionTop = currentY;
 663         #if 0
 664         // no need for assignment if value is not used later
 665         thisRegionBottom = actualY;
 666         #endif
 667         if (node->GetNext())
 668           nextRegion = (wxShapeRegion *)node->GetNext()->GetData();
 669       }
 670       if (region == nextRegion)
 671       {
 672         nextRegionBottom = actualY;
 673       }
 674
 675       currentY = actualY;
 676       node = node->GetNext();
 677     }
 678     if (!nextRegion)
 679       return;
 680
 681     // Check that we haven't gone above this region or below
 682     // next region.
 683     if ((y <= thisRegionTop) || (y >= nextRegionBottom))
 684     return;
 685
 686     dividedObject->EraseLinks(dc);
 687
 688     // Now calculate the new proportions of this region and the next region.
 689     double thisProportion = (double)((y - thisRegionTop)/dividedObject->GetHeight());
 690     double nextProportion = (double)((nextRegionBottom - y)/dividedObject->GetHeight());
 691     thisRegion->SetProportions(0.0, thisProportion);
 692     nextRegion->SetProportions(0.0, nextProportion);
 693     m_yoffset = (double)(y - dividedObject->GetY());
 694
 695     // Now reformat text
 696     int i = 0;
 697     node = dividedObject->GetRegions().GetFirst();
 698     while (node)
 699     {
 700         wxShapeRegion *region = (wxShapeRegion *)node->GetData();
 701         if (region->GetText())
 702         {
 703         wxChar *s = copystring(region->GetText());
 704         dividedObject->FormatText(dc, s, i);
 705         delete[] s;
 706         }
 707         node = node->GetNext();
 708         i++;
 709     }
 710     dividedObject->SetRegionSizes();
 711     dividedObject->Draw(dc);
 712     dividedObject->GetEventHandler()->OnMoveLinks(dc);
 713 }
 714