contrib/src/ogl/basic2.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        basic2.cpp
   3 // Purpose:     Basic OGL classes (2)
   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 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifdef __BORLANDC__
  16 #pragma hdrstop
  17 #endif
  18
  19 #ifndef WX_PRECOMP
  20 #include "wx/wx.h"
  21 #endif
  22
  23 #if wxUSE_PROLOGIO
  24 #include "wx/deprecated/wxexpr.h"
  25 #endif
  26
  27 #ifdef new
  28 #undef new
  29 #endif
  30
  31 #include <stdio.h>
  32 #include <ctype.h>
  33 #include <math.h>
  34
  35 #include "wx/ogl/ogl.h"
  36
  37
  38 // Control point types
  39 // Rectangle and most other shapes
  40 #define CONTROL_POINT_VERTICAL   1
  41 #define CONTROL_POINT_HORIZONTAL 2
  42 #define CONTROL_POINT_DIAGONAL   3
  43
  44 // Line
  45 #define CONTROL_POINT_ENDPOINT_TO 4
  46 #define CONTROL_POINT_ENDPOINT_FROM 5
  47 #define CONTROL_POINT_LINE       6
  48
  49 // Two stage construction: need to call Create
  50 IMPLEMENT_DYNAMIC_CLASS(wxPolygonShape, wxShape)
  51
  52 wxPolygonShape::wxPolygonShape()
  53 {
  54   m_points = NULL;
  55   m_originalPoints = NULL;
  56 }
  57
  58 void wxPolygonShape::Create(wxList *the_points)
  59 {
  60   ClearPoints();
  61
  62   if (!the_points)
  63   {
  64       m_originalPoints = new wxList;
  65       m_points = new wxList;
  66   }
  67   else
  68   {
  69       m_originalPoints = the_points;
  70
  71       // Duplicate the list of points
  72       m_points = new wxList;
  73
  74       wxObjectList::compatibility_iterator node = the_points->GetFirst();
  75       while (node)
  76       {
  77           wxRealPoint *point = (wxRealPoint *)node->GetData();
  78           wxRealPoint *new_point = new wxRealPoint(point->x, point->y);
  79           m_points->Append((wxObject*) new_point);
  80           node = node->GetNext();
  81       }
  82       CalculateBoundingBox();
  83       m_originalWidth = m_boundWidth;
  84       m_originalHeight = m_boundHeight;
  85       SetDefaultRegionSize();
  86   }
  87 }
  88
  89 wxPolygonShape::~wxPolygonShape()
  90 {
  91     ClearPoints();
  92 }
  93
  94 void wxPolygonShape::ClearPoints()
  95 {
  96   if (m_points)
  97   {
  98     wxObjectList::compatibility_iterator node = m_points->GetFirst();
  99     while (node)
 100     {
 101       wxRealPoint *point = (wxRealPoint *)node->GetData();
 102       delete point;
 103       m_points->Erase(node);
 104       node = m_points->GetFirst();
 105     }
 106     delete m_points;
 107     m_points = NULL;
 108   }
 109   if (m_originalPoints)
 110   {
 111     wxObjectList::compatibility_iterator node = m_originalPoints->GetFirst();
 112     while (node)
 113     {
 114       wxRealPoint *point = (wxRealPoint *)node->GetData();
 115       delete point;
 116       m_originalPoints->Erase(node);
 117       node = m_originalPoints->GetFirst();
 118     }
 119     delete m_originalPoints;
 120     m_originalPoints = NULL;
 121   }
 122 }
 123
 124
 125 // Width and height. Centre of object is centre of box.
 126 void wxPolygonShape::GetBoundingBoxMin(double *width, double *height)
 127 {
 128   *width = m_boundWidth;
 129   *height = m_boundHeight;
 130 }
 131
 132 void wxPolygonShape::CalculateBoundingBox()
 133 {
 134   // Calculate bounding box at construction (and presumably resize) time
 135   double left = 10000;
 136   double right = -10000;
 137   double top = 10000;
 138   double bottom = -10000;
 139
 140   wxObjectList::compatibility_iterator node = m_points->GetFirst();
 141   while (node)
 142   {
 143     wxRealPoint *point = (wxRealPoint *)node->GetData();
 144     if (point->x < left) left = point->x;
 145     if (point->x > right) right = point->x;
 146
 147     if (point->y < top) top = point->y;
 148     if (point->y > bottom) bottom = point->y;
 149
 150     node = node->GetNext();
 151   }
 152   m_boundWidth = right - left;
 153   m_boundHeight = bottom - top;
 154 }
 155
 156 // Recalculates the centre of the polygon, and
 157 // readjusts the point offsets accordingly.
 158 // Necessary since the centre of the polygon
 159 // is expected to be the real centre of the bounding
 160 // box.
 161 void wxPolygonShape::CalculatePolygonCentre()
 162 {
 163   double left = 10000;
 164   double right = -10000;
 165   double top = 10000;
 166   double bottom = -10000;
 167
 168   wxObjectList::compatibility_iterator node = m_points->GetFirst();
 169   while (node)
 170   {
 171     wxRealPoint *point = (wxRealPoint *)node->GetData();
 172     if (point->x < left) left = point->x;
 173     if (point->x > right) right = point->x;
 174
 175     if (point->y < top) top = point->y;
 176     if (point->y > bottom) bottom = point->y;
 177
 178     node = node->GetNext();
 179   }
 180   double bwidth = right - left;
 181   double bheight = bottom - top;
 182
 183   double newCentreX = (double)(left + (bwidth/2.0));
 184   double newCentreY = (double)(top + (bheight/2.0));
 185
 186   node = m_points->GetFirst();
 187   while (node)
 188   {
 189     wxRealPoint *point = (wxRealPoint *)node->GetData();
 190     point->x -= newCentreX;
 191     point->y -= newCentreY;
 192     node = node->GetNext();
 193   }
 194   m_xpos += newCentreX;
 195   m_ypos += newCentreY;
 196 }
 197
 198 bool PolylineHitTest(double n, double xvec[], double yvec[],
 199                            double x1, double y1, double x2, double y2)
 200 {
 201   bool isAHit = false;
 202   int i;
 203   double lastx = xvec[0];
 204   double lasty = yvec[0];
 205
 206   double min_ratio = 1.0;
 207   double line_ratio;
 208   double other_ratio;
 209
 210   for (i = 1; i < n; i++)
 211   {
 212     oglCheckLineIntersection(x1, y1, x2, y2, lastx, lasty, xvec[i], yvec[i],
 213                             &line_ratio, &other_ratio);
 214     if (line_ratio != 1.0)
 215       isAHit = true;
 216     lastx = xvec[i];
 217     lasty = yvec[i];
 218
 219     if (line_ratio < min_ratio)
 220       min_ratio = line_ratio;
 221   }
 222
 223   // Do last (implicit) line if last and first doubles are not identical
 224   if (!(xvec[0] == lastx && yvec[0] == lasty))
 225   {
 226     oglCheckLineIntersection(x1, y1, x2, y2, lastx, lasty, xvec[0], yvec[0],
 227                             &line_ratio, &other_ratio);
 228     if (line_ratio != 1.0)
 229       isAHit = true;
 230
 231   }
 232   return isAHit;
 233 }
 234
 235 bool wxPolygonShape::HitTest(double x, double y, int *attachment, double *distance)
 236 {
 237   // Imagine four lines radiating from this point. If all of these lines hit the polygon,
 238   // we're inside it, otherwise we're not. Obviously we'd need more radiating lines
 239   // to be sure of correct results for very strange (concave) shapes.
 240   double endPointsX[4];
 241   double endPointsY[4];
 242   // North
 243   endPointsX[0] = x;
 244   endPointsY[0] = (double)(y - 1000.0);
 245   // East
 246   endPointsX[1] = (double)(x + 1000.0);
 247   endPointsY[1] = y;
 248   // South
 249   endPointsX[2] = x;
 250   endPointsY[2] = (double)(y + 1000.0);
 251   // West
 252   endPointsX[3] = (double)(x - 1000.0);
 253   endPointsY[3] = y;
 254
 255   // Store polygon points in an array
 256   int np = m_points->GetCount();
 257   double *xpoints = new double[np];
 258   double *ypoints = new double[np];
 259   wxObjectList::compatibility_iterator node = m_points->GetFirst();
 260   int i = 0;
 261   while (node)
 262   {
 263     wxRealPoint *point = (wxRealPoint *)node->GetData();
 264     xpoints[i] = point->x + m_xpos;
 265     ypoints[i] = point->y + m_ypos;
 266     node = node->GetNext();
 267     i ++;
 268   }
 269
 270   // We assume it's inside the polygon UNLESS one or more
 271   // lines don't hit the outline.
 272   bool isContained = true;
 273
 274   int noPoints = 4;
 275   for (i = 0; i < noPoints; i++)
 276   {
 277     if (!PolylineHitTest(np, xpoints, ypoints, x, y, endPointsX[i], endPointsY[i]))
 278       isContained = false;
 279   }
 280 /*
 281   if (isContained)
 282     ClipsErrorFunction("It's a hit!\n");
 283   else
 284     ClipsErrorFunction("No hit.\n");
 285 */
 286   delete[] xpoints;
 287   delete[] ypoints;
 288
 289   if (!isContained)
 290     return false;
 291
 292   int nearest_attachment = 0;
 293
 294   // If a hit, check the attachment points within the object.
 295   int n = GetNumberOfAttachments();
 296   double nearest = 999999.0;
 297
 298   for (i = 0; i < n; i++)
 299   {
 300     double xp, yp;
 301     if (GetAttachmentPositionEdge(i, &xp, &yp))
 302     {
 303       double l = (double)sqrt(((xp - x) * (xp - x)) +
 304                  ((yp - y) * (yp - y)));
 305       if (l < nearest)
 306       {
 307         nearest = l;
 308         nearest_attachment = i;
 309       }
 310     }
 311   }
 312   *attachment = nearest_attachment;
 313   *distance = nearest;
 314   return true;
 315 }
 316
 317 // Really need to be able to reset the shape! Otherwise, if the
 318 // points ever go to zero, we've lost it, and can't resize.
 319 void wxPolygonShape::SetSize(double new_width, double new_height, bool WXUNUSED(recursive))
 320 {
 321   SetAttachmentSize(new_width, new_height);
 322
 323   // Multiply all points by proportion of new size to old size
 324   double x_proportion = (double)(fabs(new_width/m_originalWidth));
 325   double y_proportion = (double)(fabs(new_height/m_originalHeight));
 326
 327   wxObjectList::compatibility_iterator node = m_points->GetFirst();
 328   wxObjectList::compatibility_iterator original_node = m_originalPoints->GetFirst();
 329   while (node && original_node)
 330   {
 331     wxRealPoint *point = (wxRealPoint *)node->GetData();
 332     wxRealPoint *original_point = (wxRealPoint *)original_node->GetData();
 333
 334     point->x = (original_point->x * x_proportion);
 335     point->y = (original_point->y * y_proportion);
 336
 337     node = node->GetNext();
 338     original_node = original_node->GetNext();
 339   }
 340
 341 //  CalculateBoundingBox();
 342   m_boundWidth = (double)fabs(new_width);
 343   m_boundHeight = (double)fabs(new_height);
 344   SetDefaultRegionSize();
 345 }
 346
 347 // Make the original points the same as the working points
 348 void wxPolygonShape::UpdateOriginalPoints()
 349 {
 350   if (!m_originalPoints) m_originalPoints = new wxList;
 351   wxObjectList::compatibility_iterator original_node = m_originalPoints->GetFirst();
 352   while (original_node)
 353   {
 354     wxObjectList::compatibility_iterator next_node = original_node->GetNext();
 355     wxRealPoint *original_point = (wxRealPoint *)original_node->GetData();
 356     delete original_point;
 357     m_originalPoints->Erase(original_node);
 358
 359     original_node = next_node;
 360   }
 361
 362   wxObjectList::compatibility_iterator node = m_points->GetFirst();
 363   while (node)
 364   {
 365     wxRealPoint *point = (wxRealPoint *)node->GetData();
 366     wxRealPoint *original_point = new wxRealPoint(point->x, point->y);
 367     m_originalPoints->Append((wxObject*) original_point);
 368
 369     node = node->GetNext();
 370   }
 371   CalculateBoundingBox();
 372   m_originalWidth = m_boundWidth;
 373   m_originalHeight = m_boundHeight;
 374 }
 375
 376 void wxPolygonShape::AddPolygonPoint(int pos)
 377 {
 378   wxObjectList::compatibility_iterator node = m_points->Item(pos);
 379   if (!node) node = m_points->GetFirst();
 380   wxRealPoint *firstPoint = (wxRealPoint *)node->GetData();
 381
 382   wxObjectList::compatibility_iterator node2 = m_points->Item(pos + 1);
 383   if (!node2) node2 = m_points->GetFirst();
 384   wxRealPoint *secondPoint = (wxRealPoint *)node2->GetData();
 385
 386   double x = (double)((secondPoint->x - firstPoint->x)/2.0 + firstPoint->x);
 387   double y = (double)((secondPoint->y - firstPoint->y)/2.0 + firstPoint->y);
 388   wxRealPoint *point = new wxRealPoint(x, y);
 389
 390   if (pos >= (int) (m_points->GetCount() - 1))
 391     m_points->Append((wxObject*) point);
 392   else
 393     m_points->Insert(node2, (wxObject*) point);
 394
 395   UpdateOriginalPoints();
 396
 397   if (m_selected)
 398   {
 399     DeleteControlPoints();
 400     MakeControlPoints();
 401   }
 402 }
 403
 404 void wxPolygonShape::DeletePolygonPoint(int pos)
 405 {
 406   wxObjectList::compatibility_iterator node = m_points->Item(pos);
 407   if (node)
 408   {
 409     wxRealPoint *point = (wxRealPoint *)node->GetData();
 410     delete point;
 411     m_points->Erase(node);
 412     UpdateOriginalPoints();
 413     if (m_selected)
 414     {
 415       DeleteControlPoints();
 416       MakeControlPoints();
 417     }
 418   }
 419 }
 420
 421 // Assume (x1, y1) is centre of box (most generally, line end at box)
 422 bool wxPolygonShape::GetPerimeterPoint(double x1, double y1,
 423                                      double x2, double y2,
 424                                      double *x3, double *y3)
 425 {
 426   int n = m_points->GetCount();
 427
 428   // First check for situation where the line is vertical,
 429   // and we would want to connect to a point on that vertical --
 430   // oglFindEndForPolyline can't cope with this (the arrow
 431   // gets drawn to the wrong place).
 432   if ((m_attachmentMode == ATTACHMENT_MODE_NONE) && (x1 == x2))
 433   {
 434     // Look for the point we'd be connecting to. This is
 435     // a heuristic...
 436     wxObjectList::compatibility_iterator node = m_points->GetFirst();
 437     while (node)
 438     {
 439       wxRealPoint *point = (wxRealPoint *)node->GetData();
 440       if (point->x == 0.0)
 441       {
 442         if ((y2 > y1) && (point->y > 0.0))
 443         {
 444           *x3 = point->x + m_xpos;
 445           *y3 = point->y + m_ypos;
 446           return true;
 447         }
 448         else if ((y2 < y1) && (point->y < 0.0))
 449         {
 450           *x3 = point->x + m_xpos;
 451           *y3 = point->y + m_ypos;
 452           return true;
 453         }
 454       }
 455       node = node->GetNext();
 456     }
 457   }
 458
 459   double *xpoints = new double[n];
 460   double *ypoints = new double[n];
 461
 462   wxObjectList::compatibility_iterator node = m_points->GetFirst();
 463   int i = 0;
 464   while (node)
 465   {
 466     wxRealPoint *point = (wxRealPoint *)node->GetData();
 467     xpoints[i] = point->x + m_xpos;
 468     ypoints[i] = point->y + m_ypos;
 469     node = node->GetNext();
 470     i ++;
 471   }
 472
 473   oglFindEndForPolyline(n, xpoints, ypoints,
 474                         x1, y1, x2, y2, x3, y3);
 475
 476   delete[] xpoints;
 477   delete[] ypoints;
 478
 479   return true;
 480 }
 481
 482 void wxPolygonShape::OnDraw(wxDC& dc)
 483 {
 484     int n = m_points->GetCount();
 485     wxPoint *intPoints = new wxPoint[n];
 486     int i;
 487     for (i = 0; i < n; i++)
 488     {
 489       wxRealPoint* point = (wxRealPoint*) m_points->Item(i)->GetData();
 490       intPoints[i].x = WXROUND(point->x);
 491       intPoints[i].y = WXROUND(point->y);
 492     }
 493
 494     if (m_shadowMode != SHADOW_NONE)
 495     {
 496       if (m_shadowBrush)
 497         dc.SetBrush(* m_shadowBrush);
 498       dc.SetPen(* g_oglTransparentPen);
 499
 500       dc.DrawPolygon(n, intPoints, WXROUND(m_xpos + m_shadowOffsetX), WXROUND(m_ypos + m_shadowOffsetY));
 501     }
 502
 503     if (m_pen)
 504     {
 505       if (m_pen->GetWidth() == 0)
 506         dc.SetPen(* g_oglTransparentPen);
 507       else
 508         dc.SetPen(* m_pen);
 509     }
 510     if (m_brush)
 511       dc.SetBrush(* m_brush);
 512     dc.DrawPolygon(n, intPoints, WXROUND(m_xpos), WXROUND(m_ypos));
 513
 514     delete[] intPoints;
 515 }
 516
 517 void wxPolygonShape::OnDrawOutline(wxDC& dc, double x, double y, double w, double h)
 518 {
 519   dc.SetBrush(* wxTRANSPARENT_BRUSH);
 520   // Multiply all points by proportion of new size to old size
 521   double x_proportion = (double)(fabs(w/m_originalWidth));
 522   double y_proportion = (double)(fabs(h/m_originalHeight));
 523
 524   int n = m_originalPoints->GetCount();
 525   wxPoint *intPoints = new wxPoint[n];
 526   int i;
 527   for (i = 0; i < n; i++)
 528   {
 529     wxRealPoint* point = (wxRealPoint*) m_originalPoints->Item(i)->GetData();
 530     intPoints[i].x = WXROUND(x_proportion * point->x);
 531     intPoints[i].y = WXROUND(y_proportion * point->y);
 532   }
 533   dc.DrawPolygon(n, intPoints, WXROUND(x), WXROUND(y));
 534   delete[] intPoints;
 535 }
 536
 537 // Make as many control points as there are vertices.
 538 void wxPolygonShape::MakeControlPoints()
 539 {
 540   wxObjectList::compatibility_iterator node = m_points->GetFirst();
 541   while (node)
 542   {
 543     wxRealPoint *point = (wxRealPoint *)node->GetData();
 544     wxPolygonControlPoint *control = new wxPolygonControlPoint(m_canvas, this, CONTROL_POINT_SIZE,
 545       point, point->x, point->y);
 546     m_canvas->AddShape(control);
 547     m_controlPoints.Append(control);
 548     node = node->GetNext();
 549   }
 550 }
 551
 552 void wxPolygonShape::ResetControlPoints()
 553 {
 554   wxObjectList::compatibility_iterator node = m_points->GetFirst();
 555   wxObjectList::compatibility_iterator controlPointNode = m_controlPoints.GetFirst();
 556   while (node && controlPointNode)
 557   {
 558     wxRealPoint *point = (wxRealPoint *)node->GetData();
 559     wxPolygonControlPoint *controlPoint = (wxPolygonControlPoint *)controlPointNode->GetData();
 560
 561     controlPoint->m_xoffset = point->x;
 562     controlPoint->m_yoffset = point->y;
 563     controlPoint->m_polygonVertex = point;
 564
 565     node = node->GetNext();
 566     controlPointNode = controlPointNode->GetNext();
 567   }
 568 }
 569
 570
 571 #if wxUSE_PROLOGIO
 572 void wxPolygonShape::WriteAttributes(wxExpr *clause)
 573 {
 574   wxShape::WriteAttributes(clause);
 575
 576   clause->AddAttributeValue(wxT("x"), m_xpos);
 577   clause->AddAttributeValue(wxT("y"), m_ypos);
 578
 579   // Make a list of lists for the coordinates
 580   wxExpr *list = new wxExpr(wxExprList);
 581   wxObjectList::compatibility_iterator node = m_points->GetFirst();
 582   while (node)
 583   {
 584     wxRealPoint *point = (wxRealPoint *)node->GetData();
 585     wxExpr *point_list = new wxExpr(wxExprList);
 586     wxExpr *x_expr = new wxExpr((double)point->x);
 587     wxExpr *y_expr = new wxExpr((double)point->y);
 588
 589     point_list->Append(x_expr);
 590     point_list->Append(y_expr);
 591     list->Append(point_list);
 592
 593     node = node->GetNext();
 594   }
 595   clause->AddAttributeValue(wxT("points"), list);
 596
 597   // Save the original (unscaled) points
 598   list = new wxExpr(wxExprList);
 599   node = m_originalPoints->GetFirst();
 600   while (node)
 601   {
 602     wxRealPoint *point = (wxRealPoint *)node->GetData();
 603     wxExpr *point_list = new wxExpr(wxExprList);
 604     wxExpr *x_expr = new wxExpr((double) point->x);
 605     wxExpr *y_expr = new wxExpr((double) point->y);
 606     point_list->Append(x_expr);
 607     point_list->Append(y_expr);
 608     list->Append(point_list);
 609
 610     node = node->GetNext();
 611   }
 612   clause->AddAttributeValue(wxT("m_originalPoints"), list);
 613 }
 614
 615 void wxPolygonShape::ReadAttributes(wxExpr *clause)
 616 {
 617   wxShape::ReadAttributes(clause);
 618
 619   // Read a list of lists
 620   m_points = new wxList;
 621   m_originalPoints = new wxList;
 622
 623   wxExpr *points_list = NULL;
 624   clause->AssignAttributeValue(wxT("points"), &points_list);
 625
 626   // If no points_list, don't crash!! Assume a diamond instead.
 627   double the_height = 100.0;
 628   double the_width = 100.0;
 629   if (!points_list)
 630   {
 631     wxRealPoint *point = new wxRealPoint(0.0, (-the_height/2));
 632     m_points->Append((wxObject*) point);
 633
 634     point = new wxRealPoint((the_width/2), 0.0);
 635     m_points->Append((wxObject*) point);
 636
 637     point = new wxRealPoint(0.0, (the_height/2));
 638     m_points->Append((wxObject*) point);
 639
 640     point = new wxRealPoint((-the_width/2), 0.0);
 641     m_points->Append((wxObject*) point);
 642
 643     point = new wxRealPoint(0.0, (-the_height/2));
 644     m_points->Append((wxObject*) point);
 645   }
 646   else
 647   {
 648     wxExpr *node = points_list->value.first;
 649
 650     while (node)
 651     {
 652       wxExpr *xexpr = node->value.first;
 653       long x = xexpr->IntegerValue();
 654
 655       wxExpr *yexpr = xexpr->next;
 656       long y = yexpr->IntegerValue();
 657
 658       wxRealPoint *point = new wxRealPoint((double)x, (double)y);
 659       m_points->Append((wxObject*) point);
 660
 661       node = node->next;
 662     }
 663   }
 664
 665   points_list = NULL;
 666   clause->AssignAttributeValue(wxT("m_originalPoints"), &points_list);
 667
 668   // If no points_list, don't crash!! Assume a diamond instead.
 669   if (!points_list)
 670   {
 671     wxRealPoint *point = new wxRealPoint(0.0, (-the_height/2));
 672     m_originalPoints->Append((wxObject*) point);
 673
 674     point = new wxRealPoint((the_width/2), 0.0);
 675     m_originalPoints->Append((wxObject*) point);
 676
 677     point = new wxRealPoint(0.0, (the_height/2));
 678     m_originalPoints->Append((wxObject*) point);
 679
 680     point = new wxRealPoint((-the_width/2), 0.0);
 681     m_originalPoints->Append((wxObject*) point);
 682
 683     point = new wxRealPoint(0.0, (-the_height/2));
 684     m_originalPoints->Append((wxObject*) point);
 685
 686     m_originalWidth = the_width;
 687     m_originalHeight = the_height;
 688   }
 689   else
 690   {
 691     wxExpr *node = points_list->value.first;
 692     double min_x = 1000;
 693     double min_y = 1000;
 694     double max_x = -1000;
 695     double max_y = -1000;
 696     while (node)
 697     {
 698       wxExpr *xexpr = node->value.first;
 699       long x = xexpr->IntegerValue();
 700
 701       wxExpr *yexpr = xexpr->next;
 702       long y = yexpr->IntegerValue();
 703
 704       wxRealPoint *point = new wxRealPoint((double)x, (double)y);
 705       m_originalPoints->Append((wxObject*) point);
 706
 707       if (x < min_x)
 708         min_x = (double)x;
 709       if (y < min_y)
 710         min_y = (double)y;
 711       if (x > max_x)
 712         max_x = (double)x;
 713       if (y > max_y)
 714         max_y = (double)y;
 715
 716       node = node->next;
 717     }
 718     m_originalWidth = max_x - min_x;
 719     m_originalHeight = max_y - min_y;
 720   }
 721
 722   CalculateBoundingBox();
 723 }
 724 #endif
 725
 726 void wxPolygonShape::Copy(wxShape& copy)
 727 {
 728   wxShape::Copy(copy);
 729
 730   wxASSERT( copy.IsKindOf(CLASSINFO(wxPolygonShape)) );
 731
 732   wxPolygonShape& polyCopy = (wxPolygonShape&) copy;
 733
 734   polyCopy.ClearPoints();
 735
 736   polyCopy.m_points = new wxList;
 737   polyCopy.m_originalPoints = new wxList;
 738
 739   wxObjectList::compatibility_iterator node = m_points->GetFirst();
 740   while (node)
 741   {
 742     wxRealPoint *point = (wxRealPoint *)node->GetData();
 743     wxRealPoint *new_point = new wxRealPoint(point->x, point->y);
 744     polyCopy.m_points->Append((wxObject*) new_point);
 745     node = node->GetNext();
 746   }
 747   node = m_originalPoints->GetFirst();
 748   while (node)
 749   {
 750     wxRealPoint *point = (wxRealPoint *)node->GetData();
 751     wxRealPoint *new_point = new wxRealPoint(point->x, point->y);
 752     polyCopy.m_originalPoints->Append((wxObject*) new_point);
 753     node = node->GetNext();
 754   }
 755   polyCopy.m_boundWidth = m_boundWidth;
 756   polyCopy.m_boundHeight = m_boundHeight;
 757   polyCopy.m_originalWidth = m_originalWidth;
 758   polyCopy.m_originalHeight = m_originalHeight;
 759 }
 760
 761 int wxPolygonShape::GetNumberOfAttachments() const
 762 {
 763   int maxN = (m_points ? (m_points->GetCount() - 1) : 0);
 764   wxObjectList::compatibility_iterator node = m_attachmentPoints.GetFirst();
 765   while (node)
 766   {
 767     wxAttachmentPoint *point = (wxAttachmentPoint *)node->GetData();
 768     if (point->m_id > maxN)
 769       maxN = point->m_id;
 770     node = node->GetNext();
 771   }
 772   return maxN+1;;
 773 }
 774
 775 bool wxPolygonShape::GetAttachmentPosition(int attachment, double *x, double *y,
 776                                          int nth, int no_arcs, wxLineShape *line)
 777 {
 778   if ((m_attachmentMode == ATTACHMENT_MODE_EDGE) && m_points && attachment < (int) m_points->GetCount())
 779   {
 780     wxRealPoint *point = (wxRealPoint *)m_points->Item(attachment)->GetData();
 781     *x = point->x + m_xpos;
 782     *y = point->y + m_ypos;
 783     return true;
 784   }
 785   else
 786   { return wxShape::GetAttachmentPosition(attachment, x, y, nth, no_arcs, line); }
 787 }
 788
 789 bool wxPolygonShape::AttachmentIsValid(int attachment) const
 790 {
 791   if (!m_points)
 792     return false;
 793
 794   if ((attachment >= 0) && (attachment < (int) m_points->GetCount()))
 795     return true;
 796
 797   wxObjectList::compatibility_iterator node = m_attachmentPoints.GetFirst();
 798   while (node)
 799   {
 800     wxAttachmentPoint *point = (wxAttachmentPoint *)node->GetData();
 801     if (point->m_id == attachment)
 802       return true;
 803     node = node->GetNext();
 804   }
 805   return false;
 806 }
 807
 808 // Rotate about the given axis by the given amount in radians
 809 void wxPolygonShape::Rotate(double x, double y, double theta)
 810 {
 811     double actualTheta = theta-m_rotation;
 812
 813     // Rotate attachment points
 814     double sinTheta = (double)sin(actualTheta);
 815     double cosTheta = (double)cos(actualTheta);
 816     wxObjectList::compatibility_iterator node = m_attachmentPoints.GetFirst();
 817     while (node)
 818     {
 819         wxAttachmentPoint *point = (wxAttachmentPoint *)node->GetData();
 820         double x1 = point->m_x;
 821         double y1 = point->m_y;
 822         point->m_x = x1*cosTheta - y1*sinTheta + x*(1.0 - cosTheta) + y*sinTheta;
 823         point->m_y = x1*sinTheta + y1*cosTheta + y*(1.0 - cosTheta) + x*sinTheta;
 824         node = node->GetNext();
 825     }
 826
 827     node = m_points->GetFirst();
 828     while (node)
 829     {
 830         wxRealPoint *point = (wxRealPoint *)node->GetData();
 831         double x1 = point->x;
 832         double y1 = point->y;
 833         point->x = x1*cosTheta - y1*sinTheta + x*(1.0 - cosTheta) + y*sinTheta;
 834         point->y = x1*sinTheta + y1*cosTheta + y*(1.0 - cosTheta) + x*sinTheta;
 835         node = node->GetNext();
 836     }
 837     node = m_originalPoints->GetFirst();
 838     while (node)
 839     {
 840         wxRealPoint *point = (wxRealPoint *)node->GetData();
 841         double x1 = point->x;
 842         double y1 = point->y;
 843         point->x = x1*cosTheta - y1*sinTheta + x*(1.0 - cosTheta) + y*sinTheta;
 844         point->y = x1*sinTheta + y1*cosTheta + y*(1.0 - cosTheta) + x*sinTheta;
 845         node = node->GetNext();
 846     }
 847
 848     m_rotation = theta;
 849
 850     CalculatePolygonCentre();
 851     CalculateBoundingBox();
 852     ResetControlPoints();
 853 }
 854
 855 // Rectangle object
 856
 857 IMPLEMENT_DYNAMIC_CLASS(wxRectangleShape, wxShape)
 858
 859 wxRectangleShape::wxRectangleShape(double w, double h)
 860 {
 861   m_width = w; m_height = h; m_cornerRadius = 0.0;
 862   SetDefaultRegionSize();
 863 }
 864
 865 void wxRectangleShape::OnDraw(wxDC& dc)
 866 {
 867     double x1 = (double)(m_xpos - m_width/2.0);
 868     double y1 = (double)(m_ypos - m_height/2.0);
 869
 870     if (m_shadowMode != SHADOW_NONE)
 871     {
 872       if (m_shadowBrush)
 873         dc.SetBrush(* m_shadowBrush);
 874       dc.SetPen(* g_oglTransparentPen);
 875
 876       if (m_cornerRadius != 0.0)
 877         dc.DrawRoundedRectangle(WXROUND(x1 + m_shadowOffsetX), WXROUND(y1 + m_shadowOffsetY),
 878                                  WXROUND(m_width), WXROUND(m_height), m_cornerRadius);
 879       else
 880         dc.DrawRectangle(WXROUND(x1 + m_shadowOffsetX), WXROUND(y1 + m_shadowOffsetY), WXROUND(m_width), WXROUND(m_height));
 881     }
 882
 883     if (m_pen)
 884     {
 885       if (m_pen->GetWidth() == 0)
 886         dc.SetPen(* g_oglTransparentPen);
 887       else
 888         dc.SetPen(* m_pen);
 889     }
 890     if (m_brush)
 891       dc.SetBrush(* m_brush);
 892
 893     if (m_cornerRadius != 0.0)
 894       dc.DrawRoundedRectangle(WXROUND(x1), WXROUND(y1), WXROUND(m_width), WXROUND(m_height), m_cornerRadius);
 895     else
 896       dc.DrawRectangle(WXROUND(x1), WXROUND(y1), WXROUND(m_width), WXROUND(m_height));
 897 }
 898
 899 void wxRectangleShape::GetBoundingBoxMin(double *the_width, double *the_height)
 900 {
 901   *the_width = m_width;
 902   *the_height = m_height;
 903 }
 904
 905 void wxRectangleShape::SetSize(double x, double y, bool WXUNUSED(recursive))
 906 {
 907   SetAttachmentSize(x, y);
 908   m_width = (double)wxMax(x, 1.0);
 909   m_height = (double)wxMax(y, 1.0);
 910   SetDefaultRegionSize();
 911 }
 912
 913 void wxRectangleShape::SetCornerRadius(double rad)
 914 {
 915   m_cornerRadius = rad;
 916 }
 917
 918 // Assume (x1, y1) is centre of box (most generally, line end at box)
 919 bool wxRectangleShape::GetPerimeterPoint(double WXUNUSED(x1), double WXUNUSED(y1),
 920                                      double x2, double y2,
 921                                      double *x3, double *y3)
 922 {
 923   double bound_x, bound_y;
 924   GetBoundingBoxMax(&bound_x, &bound_y);
 925   oglFindEndForBox(bound_x, bound_y, m_xpos, m_ypos, x2, y2, x3, y3);
 926
 927   return true;
 928 }
 929
 930 #if wxUSE_PROLOGIO
 931 void wxRectangleShape::WriteAttributes(wxExpr *clause)
 932 {
 933   wxShape::WriteAttributes(clause);
 934   clause->AddAttributeValue(wxT("x"), m_xpos);
 935   clause->AddAttributeValue(wxT("y"), m_ypos);
 936
 937   clause->AddAttributeValue(wxT("width"), m_width);
 938   clause->AddAttributeValue(wxT("height"), m_height);
 939   if (m_cornerRadius != 0.0)
 940     clause->AddAttributeValue(wxT("corner"), m_cornerRadius);
 941 }
 942
 943 void wxRectangleShape::ReadAttributes(wxExpr *clause)
 944 {
 945   wxShape::ReadAttributes(clause);
 946   clause->AssignAttributeValue(wxT("width"), &m_width);
 947   clause->AssignAttributeValue(wxT("height"), &m_height);
 948   clause->AssignAttributeValue(wxT("corner"), &m_cornerRadius);
 949
 950   // In case we're reading an old file, set the region's size
 951   if (m_regions.GetCount() == 1)
 952   {
 953     wxShapeRegion *region = (wxShapeRegion *)m_regions.GetFirst()->GetData();
 954     region->SetSize(m_width, m_height);
 955   }
 956 }
 957 #endif
 958
 959 void wxRectangleShape::Copy(wxShape& copy)
 960 {
 961   wxShape::Copy(copy);
 962
 963   wxASSERT( copy.IsKindOf(CLASSINFO(wxRectangleShape)) );
 964
 965   wxRectangleShape& rectCopy = (wxRectangleShape&) copy;
 966   rectCopy.m_width = m_width;
 967   rectCopy.m_height = m_height;
 968   rectCopy.m_cornerRadius = m_cornerRadius;
 969 }
 970
 971 int wxRectangleShape::GetNumberOfAttachments() const
 972 {
 973   return wxShape::GetNumberOfAttachments();
 974 }
 975
 976
 977 // There are 4 attachment points on a rectangle - 0 = top, 1 = right, 2 = bottom,
 978 // 3 = left.
 979 bool wxRectangleShape::GetAttachmentPosition(int attachment, double *x, double *y,
 980                                          int nth, int no_arcs, wxLineShape *line)
 981 {
 982     return wxShape::GetAttachmentPosition(attachment, x, y, nth, no_arcs, line);
 983 }
 984
 985 // Text object (no box)
 986
 987 IMPLEMENT_DYNAMIC_CLASS(wxTextShape, wxRectangleShape)
 988
 989 wxTextShape::wxTextShape(double width, double height):
 990   wxRectangleShape(width, height)
 991 {
 992 }
 993
 994 void wxTextShape::OnDraw(wxDC& WXUNUSED(dc))
 995 {
 996 }
 997
 998 void wxTextShape::Copy(wxShape& copy)
 999 {
1000   wxRectangleShape::Copy(copy);
1001 }
1002
1003 #if wxUSE_PROLOGIO
1004 void wxTextShape::WriteAttributes(wxExpr *clause)
1005 {
1006   wxRectangleShape::WriteAttributes(clause);
1007 }
1008 #endif
1009
1010 // Ellipse object
1011
1012 IMPLEMENT_DYNAMIC_CLASS(wxEllipseShape, wxShape)
1013
1014 wxEllipseShape::wxEllipseShape(double w, double h)
1015 {
1016   m_width = w; m_height = h;
1017   SetDefaultRegionSize();
1018 }
1019
1020 void wxEllipseShape::GetBoundingBoxMin(double *w, double *h)
1021 {
1022   *w = m_width; *h = m_height;
1023 }
1024
1025 bool wxEllipseShape::GetPerimeterPoint(double x1, double y1,
1026                                       double x2, double y2,
1027                                       double *x3, double *y3)
1028 {
1029   double bound_x, bound_y;
1030   GetBoundingBoxMax(&bound_x, &bound_y);
1031
1032 //  oglFindEndForBox(bound_x, bound_y, m_xpos, m_ypos, x2, y2, x3, y3);
1033   oglDrawArcToEllipse(m_xpos, m_ypos, bound_x, bound_y, x2, y2, x1, y1, x3, y3);
1034
1035   return true;
1036 }
1037
1038 void wxEllipseShape::OnDraw(wxDC& dc)
1039 {
1040     if (m_shadowMode != SHADOW_NONE)
1041     {
1042       if (m_shadowBrush)
1043         dc.SetBrush(* m_shadowBrush);
1044       dc.SetPen(* g_oglTransparentPen);
1045       dc.DrawEllipse((long) ((m_xpos - GetWidth()/2) + m_shadowOffsetX),
1046                       (long) ((m_ypos - GetHeight()/2) + m_shadowOffsetY),
1047                       (long) GetWidth(), (long) GetHeight());
1048     }
1049
1050     if (m_pen)
1051     {
1052       if (m_pen->GetWidth() == 0)
1053         dc.SetPen(* g_oglTransparentPen);
1054       else
1055         dc.SetPen(* m_pen);
1056     }
1057     if (m_brush)
1058       dc.SetBrush(* m_brush);
1059     dc.DrawEllipse((long) (m_xpos - GetWidth()/2), (long) (m_ypos - GetHeight()/2), (long) GetWidth(), (long) GetHeight());
1060 }
1061
1062 void wxEllipseShape::SetSize(double x, double y, bool WXUNUSED(recursive))
1063 {
1064   SetAttachmentSize(x, y);
1065   m_width = x;
1066   m_height = y;
1067   SetDefaultRegionSize();
1068 }
1069
1070 #if wxUSE_PROLOGIO
1071 void wxEllipseShape::WriteAttributes(wxExpr *clause)
1072 {
1073   wxShape::WriteAttributes(clause);
1074   clause->AddAttributeValue(wxT("x"), m_xpos);
1075   clause->AddAttributeValue(wxT("y"), m_ypos);
1076
1077   clause->AddAttributeValue(wxT("width"), m_width);
1078   clause->AddAttributeValue(wxT("height"), m_height);
1079 }
1080
1081 void wxEllipseShape::ReadAttributes(wxExpr *clause)
1082 {
1083   wxShape::ReadAttributes(clause);
1084   clause->AssignAttributeValue(wxT("width"), &m_width);
1085   clause->AssignAttributeValue(wxT("height"), &m_height);
1086
1087   // In case we're reading an old file, set the region's size
1088   if (m_regions.GetCount() == 1)
1089   {
1090     wxShapeRegion *region = (wxShapeRegion *)m_regions.GetFirst()->GetData();
1091     region->SetSize(m_width, m_height);
1092   }
1093 }
1094 #endif
1095
1096 void wxEllipseShape::Copy(wxShape& copy)
1097 {
1098   wxShape::Copy(copy);
1099
1100   wxASSERT( copy.IsKindOf(CLASSINFO(wxEllipseShape)) );
1101
1102   wxEllipseShape& ellipseCopy = (wxEllipseShape&) copy;
1103
1104   ellipseCopy.m_width = m_width;
1105   ellipseCopy.m_height = m_height;
1106 }
1107
1108 int wxEllipseShape::GetNumberOfAttachments() const
1109 {
1110   return wxShape::GetNumberOfAttachments();
1111 }
1112
1113 // There are 4 attachment points on an ellipse - 0 = top, 1 = right, 2 = bottom,
1114 // 3 = left.
1115 bool wxEllipseShape::GetAttachmentPosition(int attachment, double *x, double *y,
1116                                          int nth, int no_arcs, wxLineShape *line)
1117 {
1118   if (m_attachmentMode == ATTACHMENT_MODE_BRANCHING)
1119     return wxShape::GetAttachmentPosition(attachment, x, y, nth, no_arcs, line);
1120
1121   if (m_attachmentMode != ATTACHMENT_MODE_NONE)
1122   {
1123     double top = (double)(m_ypos + m_height/2.0);
1124     double bottom = (double)(m_ypos - m_height/2.0);
1125     double left = (double)(m_xpos - m_width/2.0);
1126     double right = (double)(m_xpos + m_width/2.0);
1127
1128     int physicalAttachment = LogicalToPhysicalAttachment(attachment);
1129
1130     switch (physicalAttachment)
1131     {
1132       case 0:
1133       {
1134         if (m_spaceAttachments)
1135           *x = left + (nth + 1)*m_width/(no_arcs + 1);
1136         else *x = m_xpos;
1137         *y = top;
1138         // We now have the point on the bounding box: but get the point on the ellipse
1139         // by imagining a vertical line from (*x, m_ypos - m_height- 500) to (*x, m_ypos) intersecting
1140         // the ellipse.
1141         oglDrawArcToEllipse(m_xpos, m_ypos, m_width, m_height, *x, (double)(m_ypos-m_height-500), *x, m_ypos, x, y);
1142         break;
1143       }
1144       case 1:
1145       {
1146         *x = right;
1147         if (m_spaceAttachments)
1148           *y = bottom + (nth + 1)*m_height/(no_arcs + 1);
1149         else *y = m_ypos;
1150         oglDrawArcToEllipse(m_xpos, m_ypos, m_width, m_height, (double)(m_xpos+m_width+500), *y, m_xpos, *y, x, y);
1151         break;
1152       }
1153       case 2:
1154       {
1155         if (m_spaceAttachments)
1156           *x = left + (nth + 1)*m_width/(no_arcs + 1);
1157         else *x = m_xpos;
1158         *y = bottom;
1159         oglDrawArcToEllipse(m_xpos, m_ypos, m_width, m_height, *x, (double)(m_ypos+m_height+500), *x, m_ypos, x, y);
1160         break;
1161       }
1162       case 3:
1163       {
1164         *x = left;
1165         if (m_spaceAttachments)
1166           *y = bottom + (nth + 1)*m_height/(no_arcs + 1);
1167         else *y = m_ypos;
1168         oglDrawArcToEllipse(m_xpos, m_ypos, m_width, m_height, (double)(m_xpos-m_width-500), *y, m_xpos, *y, x, y);
1169         break;
1170       }
1171       default:
1172       {
1173         return wxShape::GetAttachmentPosition(attachment, x, y, nth, no_arcs, line);
1174       }
1175     }
1176     return true;
1177   }
1178   else
1179   { *x = m_xpos; *y = m_ypos; return true; }
1180 }
1181
1182
1183 // Circle object
1184 IMPLEMENT_DYNAMIC_CLASS(wxCircleShape, wxEllipseShape)
1185
1186 wxCircleShape::wxCircleShape(double diameter):wxEllipseShape(diameter, diameter)
1187 {
1188     SetMaintainAspectRatio(true);
1189 }
1190
1191 void wxCircleShape::Copy(wxShape& copy)
1192 {
1193   wxEllipseShape::Copy(copy);
1194 }
1195
1196 bool wxCircleShape::GetPerimeterPoint(double WXUNUSED(x1), double WXUNUSED(y1),
1197                                       double x2, double y2,
1198                                       double *x3, double *y3)
1199 {
1200   oglFindEndForCircle(m_width/2,
1201                       m_xpos, m_ypos,  // Centre of circle
1202                       x2, y2,  // Other end of line
1203                       x3, y3);
1204
1205   return true;
1206 }
1207
1208 // Control points
1209
1210 double wxControlPoint::sm_controlPointDragStartX = 0.0;
1211 double wxControlPoint::sm_controlPointDragStartY = 0.0;
1212 double wxControlPoint::sm_controlPointDragStartWidth = 0.0;
1213 double wxControlPoint::sm_controlPointDragStartHeight = 0.0;
1214 double wxControlPoint::sm_controlPointDragEndWidth = 0.0;
1215 double wxControlPoint::sm_controlPointDragEndHeight = 0.0;
1216 double wxControlPoint::sm_controlPointDragPosX = 0.0;
1217 double wxControlPoint::sm_controlPointDragPosY = 0.0;
1218
1219 IMPLEMENT_DYNAMIC_CLASS(wxControlPoint, wxRectangleShape)
1220
1221 wxControlPoint::wxControlPoint(wxShapeCanvas *theCanvas, wxShape *object, double size, double the_xoffset, double the_yoffset, int the_type):wxRectangleShape(size, size)
1222 {
1223   m_canvas = theCanvas;
1224   m_shape = object;
1225   m_xoffset = the_xoffset;
1226   m_yoffset = the_yoffset;
1227   m_type = the_type;
1228   SetPen(g_oglBlackForegroundPen);
1229   SetBrush(wxBLACK_BRUSH);
1230   m_oldCursor = NULL;
1231   m_visible = true;
1232   m_eraseObject = true;
1233 }
1234
1235 wxControlPoint::~wxControlPoint()
1236 {
1237 }
1238
1239 // Don't even attempt to draw any text - waste of time!
1240 void wxControlPoint::OnDrawContents(wxDC& WXUNUSED(dc))
1241 {
1242 }
1243
1244 void wxControlPoint::OnDraw(wxDC& dc)
1245 {
1246   m_xpos = m_shape->GetX() + m_xoffset;
1247   m_ypos = m_shape->GetY() + m_yoffset;
1248   wxRectangleShape::OnDraw(dc);
1249 }
1250
1251 void wxControlPoint::OnErase(wxDC& dc)
1252 {
1253   wxRectangleShape::OnErase(dc);
1254 }
1255
1256 // Implement resizing of canvas object
1257 void wxControlPoint::OnDragLeft(bool draw, double x, double y, int keys, int attachment)
1258 {
1259     m_shape->GetEventHandler()->OnSizingDragLeft(this, draw, x, y, keys, attachment);
1260 }
1261
1262 void wxControlPoint::OnBeginDragLeft(double x, double y, int keys, int attachment)
1263 {
1264     m_shape->GetEventHandler()->OnSizingBeginDragLeft(this, x, y, keys, attachment);
1265 }
1266
1267 void wxControlPoint::OnEndDragLeft(double x, double y, int keys, int attachment)
1268 {
1269     m_shape->GetEventHandler()->OnSizingEndDragLeft(this, x, y, keys, attachment);
1270 }
1271
1272 int wxControlPoint::GetNumberOfAttachments() const
1273 {
1274   return 1;
1275 }
1276
1277 bool wxControlPoint::GetAttachmentPosition(int WXUNUSED(attachment), double *x, double *y,
1278                                          int WXUNUSED(nth), int WXUNUSED(no_arcs), wxLineShape *WXUNUSED(line))
1279 {
1280   *x = m_xpos; *y = m_ypos;
1281   return true;
1282 }
1283
1284 // Control points ('handles') redirect control to the actual shape, to make it easier
1285 // to override sizing behaviour.
1286 void wxShape::OnSizingDragLeft(wxControlPoint* pt, bool WXUNUSED(draw), double x, double y, int keys, int WXUNUSED(attachment))
1287 {
1288   double bound_x;
1289   double bound_y;
1290   this->GetBoundingBoxMin(&bound_x, &bound_y);
1291
1292   wxClientDC dc(GetCanvas());
1293   GetCanvas()->PrepareDC(dc);
1294
1295   dc.SetLogicalFunction(OGLRBLF);
1296
1297   wxPen dottedPen(*wxBLACK, 1, wxDOT);
1298   dc.SetPen(dottedPen);
1299   dc.SetBrush((* wxTRANSPARENT_BRUSH));
1300
1301   if (this->GetCentreResize())
1302   {
1303     // Maintain the same centre point.
1304     double new_width = (double)(2.0*fabs(x - this->GetX()));
1305     double new_height = (double)(2.0*fabs(y - this->GetY()));
1306
1307     // Constrain sizing according to what control point you're dragging
1308     if (pt->m_type == CONTROL_POINT_HORIZONTAL)
1309     {
1310         if (GetMaintainAspectRatio())
1311         {
1312             new_height = bound_y*(new_width/bound_x);
1313         }
1314         else
1315             new_height = bound_y;
1316     }
1317     else if (pt->m_type == CONTROL_POINT_VERTICAL)
1318     {
1319         if (GetMaintainAspectRatio())
1320         {
1321             new_width = bound_x*(new_height/bound_y);
1322         }
1323         else
1324             new_width = bound_x;
1325     }
1326     else if (pt->m_type == CONTROL_POINT_DIAGONAL && (keys & KEY_SHIFT))
1327       new_height = bound_y*(new_width/bound_x);
1328
1329     if (this->GetFixedWidth())
1330       new_width = bound_x;
1331
1332     if (this->GetFixedHeight())
1333       new_height = bound_y;
1334
1335     pt->sm_controlPointDragEndWidth = new_width;
1336     pt->sm_controlPointDragEndHeight = new_height;
1337
1338     this->GetEventHandler()->OnDrawOutline(dc, this->GetX(), this->GetY(),
1339                                 new_width, new_height);
1340   }
1341   else
1342   {
1343     // Don't maintain the same centre point!
1344     double newX1 = wxMin(pt->sm_controlPointDragStartX, x);
1345     double newY1 = wxMin(pt->sm_controlPointDragStartY, y);
1346     double newX2 = wxMax(pt->sm_controlPointDragStartX, x);
1347     double newY2 = wxMax(pt->sm_controlPointDragStartY, y);
1348     if (pt->m_type == CONTROL_POINT_HORIZONTAL)
1349     {
1350       newY1 = pt->sm_controlPointDragStartY;
1351       newY2 = newY1 + pt->sm_controlPointDragStartHeight;
1352     }
1353     else if (pt->m_type == CONTROL_POINT_VERTICAL)
1354     {
1355       newX1 = pt->sm_controlPointDragStartX;
1356       newX2 = newX1 + pt->sm_controlPointDragStartWidth;
1357     }
1358     else if (pt->m_type == CONTROL_POINT_DIAGONAL && ((keys & KEY_SHIFT) || GetMaintainAspectRatio()))
1359     {
1360       double newH = (double)((newX2 - newX1)*(pt->sm_controlPointDragStartHeight/pt->sm_controlPointDragStartWidth));
1361       if (GetY() > pt->sm_controlPointDragStartY)
1362         newY2 = (double)(newY1 + newH);
1363       else
1364         newY1 = (double)(newY2 - newH);
1365     }
1366     double newWidth = (double)(newX2 - newX1);
1367     double newHeight = (double)(newY2 - newY1);
1368
1369     if (pt->m_type == CONTROL_POINT_VERTICAL && GetMaintainAspectRatio())
1370     {
1371         newWidth = bound_x * (newHeight/bound_y) ;
1372     }
1373
1374     if (pt->m_type == CONTROL_POINT_HORIZONTAL && GetMaintainAspectRatio())
1375     {
1376         newHeight = bound_y * (newWidth/bound_x) ;
1377     }
1378
1379     pt->sm_controlPointDragPosX = (double)(newX1 + (newWidth/2.0));
1380     pt->sm_controlPointDragPosY = (double)(newY1 + (newHeight/2.0));
1381     if (this->GetFixedWidth())
1382       newWidth = bound_x;
1383
1384     if (this->GetFixedHeight())
1385       newHeight = bound_y;
1386
1387     pt->sm_controlPointDragEndWidth = newWidth;
1388     pt->sm_controlPointDragEndHeight = newHeight;
1389     this->GetEventHandler()->OnDrawOutline(dc, pt->sm_controlPointDragPosX, pt->sm_controlPointDragPosY, newWidth, newHeight);
1390   }
1391 }
1392
1393 void wxShape::OnSizingBeginDragLeft(wxControlPoint* pt, double x, double y, int keys, int WXUNUSED(attachment))
1394 {
1395   m_canvas->CaptureMouse();
1396
1397   wxClientDC dc(GetCanvas());
1398   GetCanvas()->PrepareDC(dc);
1399 /*
1400   if (pt->m_eraseObject)
1401     this->Erase(dc);
1402 */
1403
1404   dc.SetLogicalFunction(OGLRBLF);
1405
1406   double bound_x;
1407   double bound_y;
1408   this->GetBoundingBoxMin(&bound_x, &bound_y);
1409   this->GetEventHandler()->OnBeginSize(bound_x, bound_y);
1410
1411   // Choose the 'opposite corner' of the object as the stationary
1412   // point in case this is non-centring resizing.
1413   if (pt->GetX() < this->GetX())
1414     pt->sm_controlPointDragStartX = (double)(this->GetX() + (bound_x/2.0));
1415   else
1416     pt->sm_controlPointDragStartX = (double)(this->GetX() - (bound_x/2.0));
1417
1418   if (pt->GetY() < this->GetY())
1419     pt->sm_controlPointDragStartY = (double)(this->GetY() + (bound_y/2.0));
1420   else
1421     pt->sm_controlPointDragStartY = (double)(this->GetY() - (bound_y/2.0));
1422
1423   if (pt->m_type == CONTROL_POINT_HORIZONTAL)
1424     pt->sm_controlPointDragStartY = (double)(this->GetY() - (bound_y/2.0));
1425   else if (pt->m_type == CONTROL_POINT_VERTICAL)
1426     pt->sm_controlPointDragStartX = (double)(this->GetX() - (bound_x/2.0));
1427
1428   // We may require the old width and height.
1429   pt->sm_controlPointDragStartWidth = bound_x;
1430   pt->sm_controlPointDragStartHeight = bound_y;
1431
1432   wxPen dottedPen(*wxBLACK, 1, wxDOT);
1433   dc.SetPen(dottedPen);
1434   dc.SetBrush((* wxTRANSPARENT_BRUSH));
1435
1436   if (this->GetCentreResize())
1437   {
1438     double new_width = (double)(2.0*fabs(x - this->GetX()));
1439     double new_height = (double)(2.0*fabs(y - this->GetY()));
1440
1441     // Constrain sizing according to what control point you're dragging
1442     if (pt->m_type == CONTROL_POINT_HORIZONTAL)
1443     {
1444         if (GetMaintainAspectRatio())
1445         {
1446             new_height = bound_y*(new_width/bound_x);
1447         }
1448         else
1449             new_height = bound_y;
1450     }
1451     else if (pt->m_type == CONTROL_POINT_VERTICAL)
1452     {
1453         if (GetMaintainAspectRatio())
1454         {
1455             new_width = bound_x*(new_height/bound_y);
1456         }
1457         else
1458             new_width = bound_x;
1459     }
1460     else if (pt->m_type == CONTROL_POINT_DIAGONAL && (keys & KEY_SHIFT))
1461       new_height = bound_y*(new_width/bound_x);
1462
1463     if (this->GetFixedWidth())
1464       new_width = bound_x;
1465
1466     if (this->GetFixedHeight())
1467       new_height = bound_y;
1468
1469     pt->sm_controlPointDragEndWidth = new_width;
1470     pt->sm_controlPointDragEndHeight = new_height;
1471     this->GetEventHandler()->OnDrawOutline(dc, this->GetX(), this->GetY(),
1472                                 new_width, new_height);
1473   }
1474   else
1475   {
1476     // Don't maintain the same centre point!
1477     double newX1 = wxMin(pt->sm_controlPointDragStartX, x);
1478     double newY1 = wxMin(pt->sm_controlPointDragStartY, y);
1479     double newX2 = wxMax(pt->sm_controlPointDragStartX, x);
1480     double newY2 = wxMax(pt->sm_controlPointDragStartY, y);
1481     if (pt->m_type == CONTROL_POINT_HORIZONTAL)
1482     {
1483       newY1 = pt->sm_controlPointDragStartY;
1484       newY2 = newY1 + pt->sm_controlPointDragStartHeight;
1485     }
1486     else if (pt->m_type == CONTROL_POINT_VERTICAL)
1487     {
1488       newX1 = pt->sm_controlPointDragStartX;
1489       newX2 = newX1 + pt->sm_controlPointDragStartWidth;
1490     }
1491     else if (pt->m_type == CONTROL_POINT_DIAGONAL && ((keys & KEY_SHIFT) || GetMaintainAspectRatio()))
1492     {
1493       double newH = (double)((newX2 - newX1)*(pt->sm_controlPointDragStartHeight/pt->sm_controlPointDragStartWidth));
1494       if (pt->GetY() > pt->sm_controlPointDragStartY)
1495         newY2 = (double)(newY1 + newH);
1496       else
1497         newY1 = (double)(newY2 - newH);
1498     }
1499     double newWidth = (double)(newX2 - newX1);
1500     double newHeight = (double)(newY2 - newY1);
1501
1502     if (pt->m_type == CONTROL_POINT_VERTICAL && GetMaintainAspectRatio())
1503     {
1504         newWidth = bound_x * (newHeight/bound_y) ;
1505     }
1506
1507     if (pt->m_type == CONTROL_POINT_HORIZONTAL && GetMaintainAspectRatio())
1508     {
1509         newHeight = bound_y * (newWidth/bound_x) ;
1510     }
1511
1512     pt->sm_controlPointDragPosX = (double)(newX1 + (newWidth/2.0));
1513     pt->sm_controlPointDragPosY = (double)(newY1 + (newHeight/2.0));
1514     if (this->GetFixedWidth())
1515       newWidth = bound_x;
1516
1517     if (this->GetFixedHeight())
1518       newHeight = bound_y;
1519
1520     pt->sm_controlPointDragEndWidth = newWidth;
1521     pt->sm_controlPointDragEndHeight = newHeight;
1522     this->GetEventHandler()->OnDrawOutline(dc, pt->sm_controlPointDragPosX, pt->sm_controlPointDragPosY, newWidth, newHeight);
1523   }
1524 }
1525
1526 void wxShape::OnSizingEndDragLeft(wxControlPoint* pt, double WXUNUSED(x), double WXUNUSED(y), int WXUNUSED(keys), int WXUNUSED(attachment))
1527 {
1528   wxClientDC dc(GetCanvas());
1529   GetCanvas()->PrepareDC(dc);
1530
1531   m_canvas->ReleaseMouse();
1532   dc.SetLogicalFunction(wxCOPY);
1533   this->Recompute();
1534   this->ResetControlPoints();
1535
1536   this->Erase(dc);
1537 /*
1538   if (!pt->m_eraseObject)
1539     this->Show(false);
1540 */
1541
1542   this->SetSize(pt->sm_controlPointDragEndWidth, pt->sm_controlPointDragEndHeight);
1543
1544   // The next operation could destroy this control point (it does for label objects,
1545   // via formatting the text), so save all values we're going to use, or
1546   // we'll be accessing garbage.
1547   wxShape *theObject = this;
1548   wxShapeCanvas *theCanvas = m_canvas;
1549   bool eraseIt = pt->m_eraseObject;
1550
1551   if (theObject->GetCentreResize())
1552     theObject->Move(dc, theObject->GetX(), theObject->GetY());
1553   else
1554     theObject->Move(dc, pt->sm_controlPointDragPosX, pt->sm_controlPointDragPosY);
1555
1556 /*
1557   if (!eraseIt)
1558     theObject->Show(true);
1559 */
1560
1561   // Recursively redraw links if we have a composite.
1562   if (theObject->GetChildren().GetCount() > 0)
1563     theObject->DrawLinks(dc, -1, true);
1564
1565   double width, height;
1566   theObject->GetBoundingBoxMax(&width, &height);
1567   theObject->GetEventHandler()->OnEndSize(width, height);
1568
1569   if (!theCanvas->GetQuickEditMode() && eraseIt) theCanvas->Redraw(dc);
1570 }
1571
1572
1573
1574 // Polygon control points
1575
1576 IMPLEMENT_DYNAMIC_CLASS(wxPolygonControlPoint, wxControlPoint)
1577
1578 wxPolygonControlPoint::wxPolygonControlPoint(wxShapeCanvas *theCanvas, wxShape *object, double size,
1579   wxRealPoint *vertex, double the_xoffset, double the_yoffset):
1580   wxControlPoint(theCanvas, object, size, the_xoffset, the_yoffset, 0)
1581 {
1582   m_polygonVertex = vertex;
1583   m_originalDistance = 0.0;
1584 }
1585
1586 wxPolygonControlPoint::~wxPolygonControlPoint()
1587 {
1588 }
1589
1590 // Calculate what new size would be, at end of resize
1591 void wxPolygonControlPoint::CalculateNewSize(double x, double y)
1592 {
1593   double bound_x;
1594   double bound_y;
1595   GetShape()->GetBoundingBoxMin(&bound_x, &bound_y);
1596
1597   double dist = (double)sqrt((x - m_shape->GetX())*(x - m_shape->GetX()) +
1598                     (y - m_shape->GetY())*(y - m_shape->GetY()));
1599
1600   m_newSize.x = (double)(dist/this->m_originalDistance)*this->m_originalSize.x;
1601   m_newSize.y = (double)(dist/this->m_originalDistance)*this->m_originalSize.y;
1602 }
1603
1604
1605 // Implement resizing polygon or moving the vertex.
1606 void wxPolygonControlPoint::OnDragLeft(bool draw, double x, double y, int keys, int attachment)
1607 {
1608     m_shape->GetEventHandler()->OnSizingDragLeft(this, draw, x, y, keys, attachment);
1609 }
1610
1611 void wxPolygonControlPoint::OnBeginDragLeft(double x, double y, int keys, int attachment)
1612 {
1613     m_shape->GetEventHandler()->OnSizingBeginDragLeft(this, x, y, keys, attachment);
1614 }
1615
1616 void wxPolygonControlPoint::OnEndDragLeft(double x, double y, int keys, int attachment)
1617 {
1618     m_shape->GetEventHandler()->OnSizingEndDragLeft(this, x, y, keys, attachment);
1619 }
1620
1621 // Control points ('handles') redirect control to the actual shape, to make it easier
1622 // to override sizing behaviour.
1623 void wxPolygonShape::OnSizingDragLeft(wxControlPoint* pt, bool WXUNUSED(draw), double x, double y, int WXUNUSED(keys), int WXUNUSED(attachment))
1624 {
1625   wxPolygonControlPoint* ppt = (wxPolygonControlPoint*) pt;
1626
1627   wxClientDC dc(GetCanvas());
1628   GetCanvas()->PrepareDC(dc);
1629
1630   dc.SetLogicalFunction(OGLRBLF);
1631
1632   wxPen dottedPen(*wxBLACK, 1, wxDOT);
1633   dc.SetPen(dottedPen);
1634   dc.SetBrush((* wxTRANSPARENT_BRUSH));
1635
1636   #if 0 // keys & KEY_CTRL)
1637   {
1638     // TODO: mend this code. Currently we rely on altering the
1639     // actual points, but we should assume we're not, as per
1640     // the normal sizing case.
1641     m_canvas->Snap(&x, &y);
1642
1643     // Move point
1644     ppt->m_polygonVertex->x = x - this->GetX();
1645     ppt->m_polygonVertex->y = y - this->GetY();
1646     ppt->SetX(x);
1647     ppt->SetY(y);
1648     ((wxPolygonShape *)this)->CalculateBoundingBox();
1649     ((wxPolygonShape *)this)->CalculatePolygonCentre();
1650   }
1651   #else
1652   {
1653     ppt->CalculateNewSize(x, y);
1654   }
1655   #endif
1656
1657   this->GetEventHandler()->OnDrawOutline(dc, this->GetX(), this->GetY(),
1658        ppt->GetNewSize().x, ppt->GetNewSize().y);
1659 }
1660
1661 void wxPolygonShape::OnSizingBeginDragLeft(wxControlPoint* pt, double x, double y, int WXUNUSED(keys), int WXUNUSED(attachment))
1662 {
1663   wxPolygonControlPoint* ppt = (wxPolygonControlPoint*) pt;
1664
1665   wxClientDC dc(GetCanvas());
1666   GetCanvas()->PrepareDC(dc);
1667
1668   this->Erase(dc);
1669
1670   dc.SetLogicalFunction(OGLRBLF);
1671
1672   double bound_x;
1673   double bound_y;
1674   this->GetBoundingBoxMin(&bound_x, &bound_y);
1675
1676   double dist = (double)sqrt((x - this->GetX())*(x - this->GetX()) +
1677                     (y - this->GetY())*(y - this->GetY()));
1678   ppt->m_originalDistance = dist;
1679   ppt->m_originalSize.x = bound_x;
1680   ppt->m_originalSize.y = bound_y;
1681
1682   if (ppt->m_originalDistance == 0.0) ppt->m_originalDistance = (double) 0.0001;
1683
1684   wxPen dottedPen(*wxBLACK, 1, wxDOT);
1685   dc.SetPen(dottedPen);
1686   dc.SetBrush((* wxTRANSPARENT_BRUSH));
1687
1688   #if 0 // keys & KEY_CTRL)
1689   {
1690     // TODO: mend this code. Currently we rely on altering the
1691     // actual points, but we should assume we're not, as per
1692     // the normal sizing case.
1693     m_canvas->Snap(&x, &y);
1694
1695     // Move point
1696     ppt->m_polygonVertex->x = x - this->GetX();
1697     ppt->m_polygonVertex->y = y - this->GetY();
1698     ppt->SetX(x);
1699     ppt->SetY(y);
1700     ((wxPolygonShape *)this)->CalculateBoundingBox();
1701     ((wxPolygonShape *)this)->CalculatePolygonCentre();
1702   }
1703   #else
1704   {
1705     ppt->CalculateNewSize(x, y);
1706   }
1707   #endif
1708
1709   this->GetEventHandler()->OnDrawOutline(dc, this->GetX(), this->GetY(),
1710        ppt->GetNewSize().x, ppt->GetNewSize().y);
1711
1712   m_canvas->CaptureMouse();
1713 }
1714
1715 void wxPolygonShape::OnSizingEndDragLeft(wxControlPoint* pt, double WXUNUSED(x), double WXUNUSED(y), int keys, int WXUNUSED(attachment))
1716 {
1717   wxPolygonControlPoint* ppt = (wxPolygonControlPoint*) pt;
1718
1719   wxClientDC dc(GetCanvas());
1720   GetCanvas()->PrepareDC(dc);
1721
1722   m_canvas->ReleaseMouse();
1723   dc.SetLogicalFunction(wxCOPY);
1724
1725   // If we're changing shape, must reset the original points
1726   if (keys & KEY_CTRL)
1727   {
1728     ((wxPolygonShape *)this)->CalculateBoundingBox();
1729     ((wxPolygonShape *)this)->UpdateOriginalPoints();
1730   }
1731   else
1732   {
1733     SetSize(ppt->GetNewSize().x, ppt->GetNewSize().y);
1734   }
1735
1736   ((wxPolygonShape *)this)->CalculateBoundingBox();
1737   ((wxPolygonShape *)this)->CalculatePolygonCentre();
1738
1739   this->Recompute();
1740   this->ResetControlPoints();
1741   this->Move(dc, this->GetX(), this->GetY());
1742   if (!m_canvas->GetQuickEditMode()) m_canvas->Redraw(dc);
1743 }
1744
1745 /*
1746  * Object region
1747  *
1748  */
1749 IMPLEMENT_DYNAMIC_CLASS(wxShapeRegion, wxObject)
1750
1751 wxShapeRegion::wxShapeRegion()
1752 {
1753   m_regionText = wxEmptyString;
1754   m_font = g_oglNormalFont;
1755   m_minHeight = 5.0;
1756   m_minWidth = 5.0;
1757   m_width = 0.0;
1758   m_height = 0.0;
1759   m_x = 0.0;
1760   m_y = 0.0;
1761
1762   m_regionProportionX = -1.0;
1763   m_regionProportionY = -1.0;
1764   m_formatMode = FORMAT_CENTRE_HORIZ | FORMAT_CENTRE_VERT;
1765   m_regionName = wxEmptyString;
1766   m_textColour = wxT("BLACK");
1767   m_penColour = wxT("BLACK");
1768   m_penStyle = wxSOLID;
1769   m_actualColourObject = wxTheColourDatabase->Find(wxT("BLACK"));
1770   m_actualPenObject = NULL;
1771 }
1772
1773 wxShapeRegion::wxShapeRegion(wxShapeRegion& region):wxObject()
1774 {
1775   m_regionText = region.m_regionText;
1776   m_regionName = region.m_regionName;
1777   m_textColour = region.m_textColour;
1778
1779   m_font = region.m_font;
1780   m_minHeight = region.m_minHeight;
1781   m_minWidth = region.m_minWidth;
1782   m_width = region.m_width;
1783   m_height = region.m_height;
1784   m_x = region.m_x;
1785   m_y = region.m_y;
1786
1787   m_regionProportionX = region.m_regionProportionX;
1788   m_regionProportionY = region.m_regionProportionY;
1789   m_formatMode = region.m_formatMode;
1790   m_actualColourObject = region.m_actualColourObject;
1791   m_actualPenObject = NULL;
1792   m_penStyle = region.m_penStyle;
1793   m_penColour = region.m_penColour;
1794
1795   ClearText();
1796   wxObjectList::compatibility_iterator node = region.m_formattedText.GetFirst();
1797   while (node)
1798   {
1799     wxShapeTextLine *line = (wxShapeTextLine *)node->GetData();
1800     wxShapeTextLine *new_line =
1801       new wxShapeTextLine(line->GetX(), line->GetY(), line->GetText());
1802     m_formattedText.Append(new_line);
1803     node = node->GetNext();
1804   }
1805 }
1806
1807 wxShapeRegion::~wxShapeRegion()
1808 {
1809   ClearText();
1810 }
1811
1812 void wxShapeRegion::ClearText()
1813 {
1814   wxObjectList::compatibility_iterator node = m_formattedText.GetFirst();
1815   while (node)
1816   {
1817     wxShapeTextLine *line = (wxShapeTextLine *)node->GetData();
1818     wxObjectList::compatibility_iterator next = node->GetNext();
1819     delete line;
1820     m_formattedText.Erase(node);
1821     node = next;
1822   }
1823 }
1824
1825 void wxShapeRegion::SetFont(wxFont *f)
1826 {
1827   m_font = f;
1828 }
1829
1830 void wxShapeRegion::SetMinSize(double w, double h)
1831 {
1832   m_minWidth = w;
1833   m_minHeight = h;
1834 }
1835
1836 void wxShapeRegion::SetSize(double w, double h)
1837 {
1838   m_width = w;
1839   m_height = h;
1840 }
1841
1842 void wxShapeRegion::SetPosition(double xp, double yp)
1843 {
1844   m_x = xp;
1845   m_y = yp;
1846 }
1847
1848 void wxShapeRegion::SetProportions(double xp, double yp)
1849 {
1850   m_regionProportionX = xp;
1851   m_regionProportionY = yp;
1852 }
1853
1854 void wxShapeRegion::SetFormatMode(int mode)
1855 {
1856   m_formatMode = mode;
1857 }
1858
1859 void wxShapeRegion::SetColour(const wxString& col)
1860 {
1861   m_textColour = col;
1862   m_actualColourObject = col;
1863 }
1864
1865 wxColour wxShapeRegion::GetActualColourObject()
1866 {
1867   m_actualColourObject = wxTheColourDatabase->Find(GetColour());
1868   return m_actualColourObject;
1869 }
1870
1871 void wxShapeRegion::SetPenColour(const wxString& col)
1872 {
1873   m_penColour = col;
1874   m_actualPenObject = NULL;
1875 }
1876
1877 // Returns NULL if the pen is invisible
1878 // (different to pen being transparent; indicates that
1879 // region boundary should not be drawn.)
1880 wxPen *wxShapeRegion::GetActualPen()
1881 {
1882   if (m_actualPenObject)
1883     return m_actualPenObject;
1884
1885   if (!m_penColour) return NULL;
1886   if (m_penColour == wxT("Invisible"))
1887     return NULL;
1888   m_actualPenObject = wxThePenList->FindOrCreatePen(m_penColour, 1, m_penStyle);
1889   return m_actualPenObject;
1890 }
1891
1892