contrib/src/canvas/canvas.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        canvas.cpp
   3 // Author:      Robert Roebling
   4 // Created:     XX/XX/XX
   5 // Copyright:   2000 (c) Robert Roebling
   6 // Licence:     wxWindows Licence
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9 #ifdef __GNUG__
  10     #pragma implementation "canvas.cpp"
  11 #endif
  12
  13 // For compilers that support precompilation, includes "wx/wx.h".
  14 #include "wx/wxprec.h"
  15
  16 #ifdef __BORLANDC__
  17     #pragma hdrstop
  18 #endif
  19
  20 #include "wx/canvas/canvas.h"
  21 #include "wx/canvas/polygon.h"
  22 #include "wx/canvas/liner.h"
  23
  24 #ifdef __WXGTK__
  25     #include <gtk/gtk.h>
  26     #include <gdk/gdkrgb.h>
  27     #include "wx/gtk/win_gtk.h"
  28 #endif
  29
  30 #ifndef wxUSE_FREETYPE
  31     #define wxUSE_FREETYPE 0
  32 #endif
  33
  34 #if wxUSE_FREETYPE
  35     #include <freetype/freetype.h>
  36 #endif
  37
  38 //#define CANVASDEBUG
  39
  40 //----------------------------------------------------------------------------
  41 // globals
  42 //----------------------------------------------------------------------------
  43
  44 const double pi = 3.1415926535;
  45
  46 #if wxUSE_FREETYPE
  47 FT_Library g_freetypeLibrary;
  48 #endif
  49
  50 //----------------------------------------------------------------------------
  51 // wxCanvasObject
  52 //----------------------------------------------------------------------------
  53
  54 IMPLEMENT_CLASS(wxCanvasObject, wxEvtHandler)
  55
  56 wxCanvasObject::wxCanvasObject()
  57 {
  58     // the default event handler is just this object
  59     m_eventHandler=this;
  60     m_admin = NULL;
  61     m_isControl = FALSE;
  62     m_isVector = FALSE;
  63     m_isImage = FALSE;
  64     m_visible  = TRUE;
  65     m_dragmode = wxDRAG_ONTOP;
  66 //  handy when debugging
  67 //  m_dragmode = wxDRAG_RECTANGLE;
  68     m_dragable = TRUE;
  69 }
  70
  71 bool wxCanvasObject::ProcessCanvasObjectEvent(wxEvent& event)
  72 {
  73     return m_eventHandler->ProcessEvent(event);
  74 }
  75
  76 void wxCanvasObject::PushEventHandler(wxEvtHandler *handler)
  77 {
  78     handler->SetNextHandler(GetEventHandler());
  79     m_eventHandler=handler;
  80 }
  81
  82 wxEvtHandler *wxCanvasObject::PopEventHandler(bool deleteHandler)
  83 {
  84     wxEvtHandler *handlerA = m_eventHandler;
  85     if ( handlerA )
  86     {
  87         wxEvtHandler *handlerB = handlerA->GetNextHandler();
  88         handlerA->SetNextHandler((wxEvtHandler *)NULL);
  89         m_eventHandler=handlerB;
  90         if ( deleteHandler )
  91         {
  92             delete handlerA;
  93             handlerA = (wxEvtHandler *)NULL;
  94         }
  95     }
  96
  97     return handlerA;
  98 }
  99
 100 void wxCanvasObject::AppendEventHandler(wxEvtHandler *handler)
 101 {
 102     GetEventHandler()->SetNextHandler(handler);
 103 }
 104
 105 wxEvtHandler *wxCanvasObject::RemoveLastEventHandler(bool deleteHandler)
 106 {
 107     //always the first in the row
 108     wxEvtHandler *handlerA = m_eventHandler;
 109     wxEvtHandler *handlerB=handlerA;
 110     //goto the end
 111     while ( handlerA->GetNextHandler() )
 112     {
 113         handlerB = handlerA;
 114         handlerA = handlerA->GetNextHandler();
 115     }
 116
 117     handlerB->SetNextHandler((wxEvtHandler *)NULL);
 118     if ( deleteHandler )
 119     {
 120         delete handlerA;
 121     }
 122
 123     return GetEventHandler();
 124 }
 125
 126 wxRect wxCanvasObject::GetAbsoluteArea(const wxTransformMatrix& cworld)
 127 {
 128     wxBoundingBox tmp=m_bbox;
 129     tmp.MapBbox(cworld);
 130
 131     int x1 = m_admin->LogicalToDeviceX( tmp.GetMinX() );
 132     int y1 = m_admin->LogicalToDeviceY( tmp.GetMinY() );
 133     int x2 = m_admin->LogicalToDeviceX( tmp.GetMaxX() );
 134     int y2 = m_admin->LogicalToDeviceY( tmp.GetMaxY() );
 135
 136     if (x1 > x2)
 137     {
 138         int tmp = x1;
 139         x1 = x2;
 140         x2 = tmp;
 141     }
 142     if (y1 > y2)
 143     {
 144         int tmp = y1;
 145         y1 = y2;
 146         y2 = tmp;
 147     }
 148
 149     wxRect tmparea;
 150     tmparea.x = x1;
 151     tmparea.y = y1;
 152     tmparea.width = x2-x1;    // FIXME +1 ?
 153     tmparea.height = y2-y1;   // FIXME +1 ?
 154
 155     return tmparea;
 156 }
 157
 158 void wxCanvasObject::MoveAbsolute( double x, double y )
 159 {
 160     //save old position of boundingbox
 161     double oldx = GetXMin();
 162     double oldy = GetYMin();
 163     double w = m_bbox.GetWidth();
 164     double h = m_bbox.GetHeight();
 165
 166     SetPosXY(x,y);
 167
 168     double newx=GetXMin();
 169     double newy=GetYMin();
 170
 171     double leftu,rightu,bottomu,topu ;
 172     leftu   = wxMin (oldx, newx ) ;
 173     rightu  = wxMax (oldx + w, newx + w) ;
 174     topu    = wxMin (oldy, newy) ;
 175     bottomu = wxMax (oldy + h, newy + h) ;
 176
 177     if ( rightu - leftu < 2*w && bottomu - topu < 2*h )
 178     {
 179         m_admin->Update( this,leftu, topu, rightu - leftu, bottomu - topu);
 180     }
 181     else
 182     {
 183         m_admin->Update( this, oldx, oldy, w, h );
 184         m_admin->Update( this, newx, newy, w, h );
 185     }
 186 }
 187
 188 void wxCanvasObject::MoveRelative( double x, double y )
 189 {
 190     //save old position of boundingbox
 191     double oldx = GetXMin();
 192     double oldy = GetYMin();
 193     double w = m_bbox.GetWidth();
 194     double h = m_bbox.GetHeight();
 195
 196     TransLate(x,y);
 197
 198     double newx=GetXMin();
 199     double newy=GetYMin();
 200
 201     double leftu,rightu,bottomu,topu ;
 202     leftu   = wxMin (oldx, newx ) ;
 203     rightu  = wxMax (oldx + w, newx + w) ;
 204     topu    = wxMin (oldy, newy) ;
 205     bottomu = wxMax (oldy + h, newy + h) ;
 206
 207     if ( rightu - leftu < 2*w && bottomu - topu < 2*h )
 208     {
 209         m_admin->Update( this,leftu, topu, rightu - leftu, bottomu - topu);
 210     }
 211     else
 212     {
 213         m_admin->Update( this, oldx, oldy, w, h );
 214         m_admin->Update( this, newx, newy, w, h );
 215     }
 216 }
 217
 218
 219 void wxCanvasObject::DragStart()
 220 {
 221     if (m_dragmode == wxDRAG_RECTANGLE)
 222     {
 223         this->SetVisible(FALSE);
 224         wxTransformMatrix help;
 225         double x = GetXMin();
 226         double y = GetYMin();
 227         double w = m_bbox.GetWidth();
 228         double h = m_bbox.GetHeight();
 229         m_admin->Update( this, x, y, w, h );
 230         m_admin->UpdateNow();
 231
 232         wxRect recold=GetAbsoluteArea(help);
 233         wxClientDC dc(m_admin->GetActive());
 234         dc.SetPen(*wxBLACK_PEN);
 235         dc.SetBrush(*wxTRANSPARENT_BRUSH);
 236         dc.SetLogicalFunction(wxINVERT);
 237         dc.DrawRectangle(recold);
 238         dc.SetBrush(wxNullBrush);
 239         dc.SetPen(wxNullPen);
 240     }
 241     else if (m_dragmode != wxDRAG_REDRAW)
 242     {
 243         this->SetVisible(FALSE);
 244         wxTransformMatrix help;
 245         double x = GetXMin();
 246         double y = GetYMin();
 247         double w = m_bbox.GetWidth();
 248         double h = m_bbox.GetHeight();
 249
 250         wxRect recnew=GetAbsoluteArea(help);
 251
 252          //redraw in buffer what should be there without this object
 253         m_admin->Update( this, x, y, w, h );
 254         m_admin->GetActive()->Freeze();
 255
 256         //save the drawing (without the object itself to a bitmap)
 257         m_atnewpos = wxBitmap(recnew.width,recnew.height);
 258         wxMemoryDC dcm;
 259         dcm.SelectObject(*m_admin->GetActive()->GetBuffer());
 260         wxMemoryDC tmp;
 261         tmp.SelectObject(m_atnewpos);
 262         tmp.Blit(0,0,recnew.width,recnew.height,&dcm,recnew.x,recnew.y,wxCOPY,FALSE);
 263         tmp.SelectObject(wxNullBitmap);
 264         dcm.SelectObject(wxNullBitmap);
 265     }
 266 }
 267
 268
 269 void wxCanvasObject::DragRelative( double x, double y)
 270 {
 271     if (m_dragmode == wxDRAG_RECTANGLE)
 272     {
 273         wxTransformMatrix help;
 274
 275         wxRect recold=GetAbsoluteArea(help);
 276
 277         TransLate(x,y);
 278
 279         wxRect recnew=GetAbsoluteArea(help);
 280
 281         wxClientDC dc(m_admin->GetActive());
 282         dc.SetPen(*wxBLACK_PEN);
 283         dc.SetBrush(*wxTRANSPARENT_BRUSH);
 284         dc.SetLogicalFunction(wxINVERT);
 285         dc.DrawRectangle(recold);
 286         dc.DrawRectangle(recnew);
 287         dc.SetBrush(wxNullBrush);
 288         dc.SetPen(wxNullPen);
 289     }
 290     else if (m_dragmode != wxDRAG_REDRAW)
 291     {
 292         wxClientDC dc(m_admin->GetActive());
 293         wxMemoryDC tmp;
 294
 295         wxTransformMatrix help;
 296         wxRect recold=GetAbsoluteArea(help);
 297
 298         //restore what was there (without the object itself)
 299         wxMemoryDC dcm;
 300         dcm.SelectObject(*m_admin->GetActive()->GetBuffer());
 301         tmp.SelectObject(m_atnewpos);
 302         dcm.Blit(recold.x,recold.y,recold.width,recold.height,&tmp,0,0,wxCOPY,FALSE);
 303
 304         TransLate(x,y);
 305
 306         wxRect recnew=GetAbsoluteArea(help);
 307
 308         //save the contents of the buffer at the new position
 309         tmp.Blit(0,0,recnew.width,recnew.height,&dcm,recnew.x,recnew.y,wxCOPY,FALSE);
 310         tmp.SelectObject(wxNullBitmap);
 311
 312         //m_atnewpos = m_admin->GetActive()->GetBuffer()->GetSubBitmap( recnew );
 313
 314         this->SetVisible(TRUE);
 315         //redraw object into the buffer
 316         m_admin->GetActive()->SetDC(&dcm);
 317         Render(&help,recnew.x,recnew.y,recnew.width,recnew.height);
 318
 319         //draw the union or seperate to the canvas
 320         double leftu,rightu,bottomu,topu ;
 321         leftu   = wxMin (recold.x, recnew.x ) ;
 322         rightu  = wxMax (recold.x + recold.width, recnew.x + recnew.width ) ;
 323         topu    = wxMin (recold.y, recnew.y) ;
 324         bottomu = wxMax (recold.y + recold.height, recnew.y + recnew.height) ;
 325
 326         if ( rightu - leftu < 2*recold.width && bottomu - topu < 2*recold.height)
 327         {
 328             dc.Blit(leftu,topu,rightu - leftu,bottomu - topu,&dcm,leftu,topu,wxCOPY,FALSE);
 329         }
 330         else
 331         {
 332             //do them seperate
 333             //first redraw what should be at the old position in the canvas
 334             dc.Blit(recold.x,recold.y,recold.width,recold.height,&dcm,recold.x,recold.y,wxCOPY,FALSE);
 335             //blit the new position of the object to the canvas
 336             dc.Blit(recnew.x,recnew.y,recnew.width,recnew.height,&dcm,recnew.x,recnew.y,wxCOPY,FALSE);
 337         }
 338         dcm.SelectObject(wxNullBitmap);
 339         this->SetVisible(FALSE);
 340     }
 341     else
 342         MoveRelative(x,y);
 343 }
 344
 345
 346 void wxCanvasObject::DragEnd()
 347 {
 348     m_atnewpos = wxBitmap(0,0);
 349     m_admin->GetActive()->Thaw();
 350     this->SetVisible(TRUE);
 351     double x = GetXMin();
 352     double y = GetYMin();
 353     double w = m_bbox.GetWidth();
 354     double h = m_bbox.GetHeight();
 355     m_admin->Update( this, x, y, w, h );
 356     m_admin->UpdateNow();
 357 }
 358
 359 wxCanvasObject* wxCanvasObject::IsHitWorld( double x, double y, double margin )
 360 {
 361     if ((x >= m_bbox.GetMinX()-margin) &&
 362         (x <= m_bbox.GetMaxX()+margin) &&
 363         (y >= m_bbox.GetMinY()-margin) &&
 364         (y <= m_bbox.GetMaxY()+margin))
 365     {
 366         return this;
 367     }
 368
 369     return (wxCanvasObject*) NULL;
 370 }
 371
 372 wxCanvasObject* wxCanvasObject::Contains( wxCanvasObject* obj )
 373 {
 374     if (obj == this)
 375         return this;
 376
 377     return (wxCanvasObject*) NULL;
 378 }
 379
 380 void wxCanvasObject::CaptureMouse()
 381 {
 382     m_admin->GetActive()->SetCaptureMouse( this );
 383 }
 384
 385 void wxCanvasObject::ReleaseMouse()
 386 {
 387     m_admin->GetActive()->SetCaptureMouse( NULL );
 388 }
 389
 390 bool wxCanvasObject::IsCapturedMouse()
 391 {
 392     return (m_admin->GetActive()->GetCaptured() == this);
 393 }
 394
 395
 396 void wxCanvasObject::Render(wxTransformMatrix* cworld, int clip_x, int clip_y, int clip_width, int clip_height )
 397 {
 398 }
 399
 400 void wxCanvasObject::CalcBoundingBox()
 401 {
 402 }
 403
 404 void wxCanvasObject::WriteSVG( wxTextOutputStream &stream )
 405 {
 406 }
 407
 408 //----------------------------------------------------------------------------
 409 // wxCanvasObjectGroup
 410 //----------------------------------------------------------------------------
 411
 412 IMPLEMENT_CLASS(wxCanvasObjectGroup, wxCanvasObject)
 413
 414 wxCanvasObjectGroup::wxCanvasObjectGroup(double x, double y)
 415 {
 416     lworld.Translate(x,y);
 417     //no objects make the bounding box the x,y and take care of it later
 418     m_bbox.Expand(x,y);
 419 }
 420
 421 wxCanvasObjectGroup::~wxCanvasObjectGroup()
 422 {
 423 }
 424
 425 void wxCanvasObjectGroup::PushEventHandler(wxEvtHandler *handler)
 426 {
 427     wxCanvasObject::PushEventHandler(handler);
 428     wxNode *node = m_objects.First();
 429     while (node)
 430     {
 431         wxCanvasObject *obj = (wxCanvasObject*) node->Data();
 432
 433         obj->PushEventHandler(handler);
 434
 435         node = node->Next();
 436     }
 437 }
 438
 439 wxEvtHandler *wxCanvasObjectGroup::PopEventHandler(bool deleteHandler)
 440 {
 441     wxNode *node = m_objects.First();
 442     while (node)
 443     {
 444         wxCanvasObject *obj = (wxCanvasObject*) node->Data();
 445
 446         obj->PopEventHandler(deleteHandler);
 447
 448         node = node->Next();
 449     }
 450     return wxCanvasObject::PopEventHandler(deleteHandler);
 451 }
 452
 453 void wxCanvasObjectGroup::AppendEventHandler(wxEvtHandler *handler)
 454 {
 455     wxCanvasObject::AppendEventHandler(handler);
 456     wxNode *node = m_objects.First();
 457     while (node)
 458     {
 459         wxCanvasObject *obj = (wxCanvasObject*) node->Data();
 460
 461         obj->AppendEventHandler(handler);
 462
 463         node = node->Next();
 464     }
 465 }
 466
 467 wxEvtHandler *wxCanvasObjectGroup::RemoveLastEventHandler(bool deleteHandler)
 468 {
 469     wxNode *node = m_objects.First();
 470     while (node)
 471     {
 472         wxCanvasObject *obj = (wxCanvasObject*) node->Data();
 473
 474         obj->RemoveLastEventHandler(deleteHandler);
 475
 476         node = node->Next();
 477     }
 478     return wxCanvasObject::RemoveLastEventHandler(deleteHandler);
 479 }
 480
 481 void wxCanvasObjectGroup::TransLate( double x, double y )
 482 {
 483     lworld.Translate(x,y);
 484     CalcBoundingBox();
 485 }
 486
 487 void wxCanvasObjectGroup::SetAdmin(wxCanvasAdmin* admin)
 488 {
 489     m_admin=admin;
 490     wxNode *node = m_objects.First();
 491     while (node)
 492     {
 493         wxCanvasObject *obj = (wxCanvasObject*) node->Data();
 494
 495         obj->SetAdmin(admin);
 496
 497         node = node->Next();
 498     }
 499 }
 500
 501 void wxCanvasObjectGroup::DeleteContents( bool flag)
 502 {
 503     m_objects.DeleteContents( flag );
 504     m_bbox.SetValid(FALSE);
 505     CalcBoundingBox();
 506 }
 507
 508 void wxCanvasObjectGroup::Prepend( wxCanvasObject* obj )
 509 {
 510     m_objects.Insert( obj );
 511     if (m_objects.First())
 512     {
 513         m_bbox.Expand(obj->GetBbox());
 514     }
 515     else
 516     {
 517         m_bbox.SetValid(FALSE);
 518         CalcBoundingBox();
 519     }
 520 }
 521
 522 void wxCanvasObjectGroup::Append( wxCanvasObject* obj )
 523 {
 524     m_objects.Append( obj );
 525     if (m_objects.First())
 526     {
 527         m_bbox.Expand(obj->GetBbox());
 528     }
 529     else
 530     {
 531         m_bbox.SetValid(FALSE);
 532         CalcBoundingBox();
 533     }
 534 }
 535
 536 void wxCanvasObjectGroup::Insert( size_t before, wxCanvasObject* obj )
 537 {
 538     m_objects.Insert( before, obj );
 539     m_bbox.SetValid(FALSE);
 540     if (m_objects.First())
 541     {
 542         m_bbox.Expand(obj->GetBbox());
 543     }
 544     else
 545     {
 546         m_bbox.SetValid(FALSE);
 547         CalcBoundingBox();
 548     }
 549 }
 550
 551 void wxCanvasObjectGroup::Remove( wxCanvasObject* obj )
 552 {
 553     m_objects.DeleteObject( obj );
 554     m_bbox.SetValid(FALSE);
 555     CalcBoundingBox();
 556 }
 557
 558 void wxCanvasObjectGroup::CalcBoundingBox()
 559 {
 560     m_bbox.SetValid(FALSE);
 561     wxNode *node = m_objects.First();
 562     while (node)
 563     {
 564         wxCanvasObject *obj = (wxCanvasObject*) node->Data();
 565
 566
 567         obj->CalcBoundingBox();
 568         wxBoundingBox tmp;
 569         tmp=obj->GetBbox();
 570         tmp.MapBbox(lworld);
 571
 572         m_bbox.Expand( tmp );
 573         node = node->Next();
 574     }
 575 }
 576
 577 void wxCanvasObjectGroup::Render(wxTransformMatrix* cworld, int x, int y, int width, int height )
 578 {
 579     if (!m_visible) return;
 580
 581     wxTransformMatrix backup = *cworld;
 582     *cworld *= lworld;
 583
 584     wxNode *node = m_objects.First();
 585
 586     if (!node) return;
 587
 588
 589 #ifdef CANVASDEBUG
 590     wxRect absarea=GetAbsoluteArea(*cworld);
 591     wxDC *dc = m_admin->GetActive()->GetDC();
 592     dc->SetPen(*wxBLACK_PEN);
 593     dc->SetBrush(*wxTRANSPARENT_BRUSH);
 594     dc->DrawRectangle( absarea.x , absarea.y , absarea.width , absarea.height );
 595     dc->SetBrush(wxNullBrush);
 596     dc->SetPen(wxNullPen);
 597 #endif
 598     //TODO the next will only work if all boundingboxes stay up to date (problem when mowing currently
 599     /*
 600     if (! ( wxMax(absarea.x, x) < wxMin(absarea.x + absarea.width , x + width ) &&
 601             wxMax(absarea.y, y) < wxMin(absarea.y + absarea.height , y + height )
 602           )
 603        )
 604         return;
 605     */
 606
 607     // cycle through all objects
 608     while (node)
 609     {
 610         wxCanvasObject *obj = (wxCanvasObject*) node->Data();
 611
 612         if (!obj->IsControl() && obj->GetVisible())
 613         {
 614
 615             //get area at the absolute position
 616             wxRect absareaobject = obj->GetAbsoluteArea(*cworld);
 617
 618             // If we have 10.000 objects, we will go through
 619             // this 10.000 times for each update, so we have
 620             // to optimise carefully.
 621             int clip_x = absareaobject.x;
 622             int clip_width = absareaobject.width;
 623             if (clip_x < x)
 624             {
 625                 clip_width -= x-clip_x;
 626                 clip_x = x;
 627             }
 628             if (clip_width > 0)
 629             {
 630                 if (clip_x + clip_width > x + width)
 631                     clip_width = x+width-clip_x;
 632
 633                 if (clip_width > 0)
 634                 {
 635                     int clip_y = absareaobject.y;
 636                     int clip_height = absareaobject.height;
 637                     if (clip_y < y)
 638                     {
 639                         clip_height -= y-clip_y;
 640                         clip_y = y;
 641                     }
 642                     if (clip_height > 0)
 643                     {
 644                         if (clip_y + clip_height > y + height)
 645                             clip_height = y+height-clip_y;
 646
 647                         if (clip_height > 0)
 648                         {
 649                             obj->Render(cworld, clip_x, clip_y, clip_width, clip_height );
 650                         }
 651                     }
 652                 }
 653             }
 654         }
 655
 656         node = node->Next();
 657     }
 658     *cworld = backup;
 659 }
 660
 661 void wxCanvasObjectGroup::WriteSVG( wxTextOutputStream &stream )
 662 {
 663 }
 664
 665 wxCanvasObject* wxCanvasObjectGroup::IsHitWorld( double x, double y, double margin )
 666 {
 667     //KKKfirst check if within bbox
 668     //will only work if they are always uptodate
 669     //if (!m_bbox.PointInBox(x,y,margin))
 670     //    return (wxCanvasObject*) NULL;
 671
 672     wxTransformMatrix inverse =  lworld;
 673     double xh,yh;
 674     inverse.Invert();
 675     inverse.TransformPoint(x,y,xh,yh);
 676
 677     wxCanvasObject *obj=0;
 678     wxNode *node = m_objects.Last();
 679     while (node)
 680     {
 681         obj=(wxCanvasObject*) node->Data();
 682
 683         if (!obj->IsControl() )
 684         {
 685             if (obj->IsHitWorld(xh,yh,margin))
 686             {
 687                 return obj;
 688             }
 689         }
 690         node = node->Previous();
 691     }
 692
 693     return (wxCanvasObject*) NULL;
 694 }
 695
 696 wxCanvasObject* wxCanvasObjectGroup::Contains( wxCanvasObject* obj )
 697 {
 698     wxCanvasObject* cobj;
 699     wxNode *node = m_objects.First();
 700     while (node)
 701     {
 702         cobj=(wxCanvasObject*) node->Data();
 703
 704         if (cobj->Contains(obj))
 705         {
 706             return obj;
 707         }
 708         node = node->Next();
 709     }
 710
 711     return (wxCanvasObject*) NULL;
 712 }
 713
 714 int wxCanvasObjectGroup::IndexOf( wxCanvasObject* obj )
 715 {
 716     return m_objects.IndexOf( obj );
 717 }
 718
 719 //----------------------------------------------------------------------------
 720 // wxCanvasObjectRef
 721 //----------------------------------------------------------------------------
 722
 723 IMPLEMENT_CLASS(wxCanvasObjectRef, wxCanvasObject)
 724
 725 wxCanvasObjectRef::wxCanvasObjectRef(double x, double y, wxCanvasObject* obj)
 726    : wxCanvasObject()
 727 {
 728     lworld.Translate(x,y);
 729     m_obj = obj;
 730
 731     m_bbox.SetValid(FALSE);
 732     wxBoundingBox tmp;
 733     tmp=obj->GetBbox();
 734     tmp.MapBbox(lworld);
 735     m_bbox.Expand( tmp );
 736 }
 737
 738 void wxCanvasObjectRef::PushEventHandler(wxEvtHandler *handler)
 739 {
 740     wxCanvasObject::PushEventHandler(handler);
 741     m_obj->PushEventHandler(handler);
 742 }
 743
 744 wxEvtHandler *wxCanvasObjectRef::PopEventHandler(bool deleteHandler)
 745 {
 746     m_obj->PopEventHandler(deleteHandler);
 747     return wxCanvasObject::PopEventHandler(deleteHandler);
 748 }
 749
 750 void wxCanvasObjectRef::AppendEventHandler(wxEvtHandler *handler)
 751 {
 752     wxCanvasObject::AppendEventHandler(handler);
 753     m_obj->AppendEventHandler(handler);
 754 }
 755
 756 wxEvtHandler *wxCanvasObjectRef::RemoveLastEventHandler(bool deleteHandler)
 757 {
 758     m_obj->RemoveLastEventHandler(deleteHandler);
 759     return wxCanvasObject::RemoveLastEventHandler(deleteHandler);
 760 }
 761
 762 void wxCanvasObjectRef::TransLate( double x, double y )
 763 {
 764     lworld.Translate(x,y);
 765     CalcBoundingBox();
 766 }
 767
 768 wxCanvasObject* wxCanvasObjectRef::Contains( wxCanvasObject* obj )
 769 {
 770     if (obj == this || m_obj->Contains(obj))
 771         return this;
 772
 773     return (wxCanvasObject*) NULL;
 774 }
 775
 776
 777 void wxCanvasObjectRef::SetRotation(double rotation)
 778 {
 779     lworld.SetRotation(rotation);
 780     CalcBoundingBox();
 781 }
 782
 783 void wxCanvasObjectRef::SetScale(double scalex,double scaley)
 784 {
 785     lworld.Scale(scalex,scaley,lworld.GetValue(2,0),lworld.GetValue(2,1));
 786     CalcBoundingBox();
 787 }
 788
 789 void wxCanvasObjectRef::SetAdmin(wxCanvasAdmin* admin)
 790 {
 791     m_admin = admin;
 792     m_obj->SetAdmin(admin);
 793 }
 794
 795 void wxCanvasObjectRef::CalcBoundingBox()
 796 {
 797     m_bbox.SetValid(FALSE);
 798     m_obj->CalcBoundingBox();
 799
 800     wxBoundingBox tmp;
 801     tmp=m_obj->GetBbox();
 802     tmp.MapBbox(lworld);
 803     m_bbox.Expand( tmp );
 804 }
 805
 806 void wxCanvasObjectRef::Render(wxTransformMatrix* cworld, int x, int y, int width, int height )
 807 {
 808     if (!m_visible) return;
 809
 810     //get the absolute area (without the local matrix included)
 811     //the boundingbox is relative to the parent.
 812     wxRect absarea=GetAbsoluteArea(*cworld);
 813
 814     wxTransformMatrix backup = *cworld;
 815     *cworld *= lworld;
 816
 817 #ifdef CANVASDEBUG
 818     wxDC *dc = m_admin->GetActive()->GetDC();
 819     dc->SetPen(*wxBLACK_PEN);
 820     dc->SetBrush(*wxTRANSPARENT_BRUSH);
 821     dc->DrawRectangle( absarea.x , absarea.y , absarea.width , absarea.height );
 822     dc->SetBrush(wxNullBrush);
 823     dc->SetPen(wxNullPen);
 824 #endif
 825
 826     int clip_x = absarea.x;
 827     int clip_width = absarea.width;
 828     if (clip_x < x)
 829     {
 830         clip_width -= x-clip_x;
 831         clip_x = x;
 832     }
 833     if (clip_width > 0)
 834     {
 835         if (clip_x + clip_width > x + width)
 836             clip_width = x+width-clip_x;
 837
 838         if (clip_width > 0)
 839         {
 840             int clip_y = absarea.y;
 841             int clip_height = absarea.height;
 842             if (clip_y < y)
 843             {
 844                 clip_height -= y-clip_y;
 845                 clip_y = y;
 846             }
 847             if (clip_height > 0)
 848             {
 849                 if (clip_y + clip_height > y + height)
 850                     clip_height = y+height-clip_y;
 851
 852                 if (clip_height > 0)
 853                     m_obj->Render(cworld, clip_x, clip_y, clip_width, clip_height );
 854             }
 855         }
 856     }
 857
 858     *cworld = backup;
 859 }
 860
 861 void wxCanvasObjectRef::WriteSVG( wxTextOutputStream &stream )
 862 {
 863 }
 864
 865 wxCanvasObject* wxCanvasObjectRef::IsHitWorld( double x, double y, double margin )
 866 {
 867     //KKKfirst check if within bbox
 868     //will only work if they are always uptodate
 869     //if (!m_bbox.PointInBox(x,y,margin))
 870     //    return (wxCanvasObject*) NULL;
 871
 872     wxTransformMatrix inverse =  lworld;
 873     double xh,yh;
 874     inverse.Invert();
 875     inverse.TransformPoint(x,y,xh,yh);
 876
 877     if (m_obj->IsHitWorld(xh,yh,margin))
 878         return this;
 879
 880     return (wxCanvasObject*) NULL;
 881 }
 882
 883
 884
 885 //----------------------------------------------------------------------------
 886 // wxCanvasRect
 887 //----------------------------------------------------------------------------
 888
 889 IMPLEMENT_CLASS(wxCanvasRect, wxCanvasObject)
 890
 891 wxCanvasRect::wxCanvasRect( double x, double y, double w, double h , double radius )
 892    : wxCanvasObject()
 893 {
 894     m_x = x;
 895     m_y = y;
 896     m_width = w;
 897     m_height = h;
 898     m_radius = radius;
 899
 900     m_brush = *wxBLACK_BRUSH;
 901     m_pen = *wxTRANSPARENT_PEN;
 902     CalcBoundingBox();
 903 }
 904
 905 void wxCanvasRect::TransLate( double x, double y )
 906 {
 907     m_x += x;
 908     m_y += y;
 909     CalcBoundingBox();
 910 }
 911
 912 void wxCanvasRect::CalcBoundingBox()
 913 {
 914     m_bbox.SetMin( m_x , m_y);
 915     m_bbox.SetMax( m_x + m_width ,m_y + m_height );
 916
 917     //include the pen width also
 918 //KKK    m_bbox.EnLarge(m_pen.GetWidth()+m_radius);
 919     m_bbox.EnLarge(m_pen.GetWidth()/2);
 920 }
 921
 922 void wxCanvasRect::Render(wxTransformMatrix* cworld, int clip_x, int clip_y, int clip_width, int clip_height )
 923 {
 924     if (!m_visible) return;
 925
 926     if (cworld->GetRotation())
 927     {
 928         wxPoint *cpoints = new wxPoint[4];
 929         double x;
 930         double y;
 931         cworld->TransformPoint( m_x, m_y, x, y );
 932         cpoints[0].x = m_admin->LogicalToDeviceX(x);
 933         cpoints[0].y = m_admin->LogicalToDeviceY(y);
 934         cworld->TransformPoint( m_x , m_y + m_height, x, y );
 935         cpoints[1].x = m_admin->LogicalToDeviceX(x);
 936         cpoints[1].y = m_admin->LogicalToDeviceY(y);
 937         cworld->TransformPoint( m_x + m_width, m_y + m_height, x, y );
 938         cpoints[2].x = m_admin->LogicalToDeviceX(x);
 939         cpoints[2].y = m_admin->LogicalToDeviceY(y);
 940         cworld->TransformPoint( m_x + m_width, m_y , x, y );
 941         cpoints[3].x = m_admin->LogicalToDeviceX(x);
 942         cpoints[3].y = m_admin->LogicalToDeviceY(y);
 943
 944         wxDC *dc = m_admin->GetActive()->GetDC();
 945         dc->SetClippingRegion(clip_x, clip_y, clip_width, clip_height);
 946         dc->SetBrush(m_brush);
 947         int pw=m_pen.GetWidth();
 948         m_pen.SetWidth(m_admin->LogicalToDeviceXRel(pw));
 949         dc->SetPen(m_pen);
 950         dc->DrawPolygon(4, cpoints, 0,0,wxWINDING_RULE);
 951         delete [] cpoints;
 952         dc->SetBrush(wxNullBrush);
 953         dc->SetPen(wxNullPen);
 954         dc->DestroyClippingRegion();
 955         m_pen.SetWidth(pw);
 956     }
 957     else
 958     {
 959         wxDC *dc = m_admin->GetActive()->GetDC();
 960         dc->SetClippingRegion(clip_x, clip_y, clip_width, clip_height);
 961         dc->SetBrush(m_brush);
 962         int pw=m_pen.GetWidth();
 963         m_pen.SetWidth(m_admin->LogicalToDeviceXRel(pw));
 964         dc->SetPen(m_pen);
 965         //yes the whole not only the clipping region, because we have a pen also
 966         int x = m_admin->LogicalToDeviceX(cworld->GetValue(2,0) + m_x );
 967         int y = m_admin->LogicalToDeviceY(cworld->GetValue(2,1) + m_y );
 968         int w = m_admin->LogicalToDeviceXRel( m_width );
 969         int h = m_admin->LogicalToDeviceYRel( m_height );
 970         int r = m_admin->LogicalToDeviceYRel( m_radius );
 971         if (w > 0 && w < 1) w=1;
 972         if (w < 0 && w > -1) w=-1;
 973         if (h > 0 && h < 1) h=1;
 974         if (h < 0 && h > -1) h=-1;
 975         if (m_radius)
 976             dc->DrawRoundedRectangle( x,y,w,h,r);
 977         else
 978             dc->DrawRectangle( x,y,w,h);
 979         dc->SetBrush(wxNullBrush);
 980         dc->SetPen(wxNullPen);
 981         dc->DestroyClippingRegion();
 982         m_pen.SetWidth(pw);
 983     }
 984 }
 985
 986 void wxCanvasRect::WriteSVG( wxTextOutputStream &stream )
 987 {
 988 }
 989
 990 //----------------------------------------------------------------------------
 991 // wxCanvasCircle
 992 //----------------------------------------------------------------------------
 993
 994 wxCanvasCircle::wxCanvasCircle( double x, double y, double radius )
 995    : wxCanvasObject()
 996 {
 997     m_x = x;
 998     m_y = y;
 999     m_radius = radius;
1000
1001     m_brush = *wxBLACK_BRUSH;
1002     m_pen = *wxTRANSPARENT_PEN;
1003     CalcBoundingBox();
1004 }
1005
1006 void wxCanvasCircle::TransLate( double x, double y )
1007 {
1008     m_x += x;
1009     m_y += y;
1010     CalcBoundingBox();
1011 }
1012
1013 void wxCanvasCircle::CalcBoundingBox()
1014 {
1015     m_bbox.SetMin( m_x-m_radius , m_y-m_radius );
1016     m_bbox.SetMax( m_x+m_radius , m_y+m_radius );
1017
1018     //include the pen width also
1019     m_bbox.EnLarge(m_pen.GetWidth()/2);
1020 }
1021
1022 void wxCanvasCircle::Render(wxTransformMatrix* cworld, int clip_x, int clip_y, int clip_width, int clip_height )
1023 {
1024     if (!m_visible) return;
1025
1026     wxDC *dc = m_admin->GetActive()->GetDC();
1027     dc->SetClippingRegion(clip_x, clip_y, clip_width, clip_height);
1028     dc->SetBrush(m_brush);
1029     int pw=m_pen.GetWidth();
1030     m_pen.SetWidth(m_admin->LogicalToDeviceXRel(pw));
1031     dc->SetPen(m_pen);
1032     //yes the whole not only the clipping region, because we have a pen also
1033     //and rotation on a circle is not important so only a shift with cworld
1034     int x = m_admin->LogicalToDeviceX(cworld->GetValue(2,0) + m_x );
1035     int y = m_admin->LogicalToDeviceY(cworld->GetValue(2,1) + m_y );
1036     int radius = m_admin->LogicalToDeviceXRel( m_radius );
1037     if (radius < 1) radius=1;
1038     dc->DrawCircle( x,y,radius);
1039     dc->SetBrush(wxNullBrush);
1040     dc->SetPen(wxNullPen);
1041     dc->DestroyClippingRegion();
1042     m_pen.SetWidth(pw);
1043 }
1044
1045 void wxCanvasCircle::WriteSVG( wxTextOutputStream &stream )
1046 {
1047 }
1048
1049 wxCanvasObject* wxCanvasCircle::IsHitWorld( double x, double y, double margin )
1050 {
1051     if ((x >= m_bbox.GetMinX()-margin) &&
1052         (x <= m_bbox.GetMaxX()+margin) &&
1053         (y >= m_bbox.GetMinY()-margin) &&
1054         (y <= m_bbox.GetMaxY()+margin)
1055        )
1056     {
1057         if (m_radius+m_pen.GetWidth()/2+margin > sqrt(pow(m_x-x,2)+pow(m_y-y,2)))
1058             return this;
1059         else
1060             return (wxCanvasObject*) NULL;
1061     }
1062     return (wxCanvasObject*) NULL;
1063 }
1064
1065 //----------------------------------------------------------------------------
1066 // wxCanvasEllipse
1067 //----------------------------------------------------------------------------
1068
1069 wxCanvasEllipse::wxCanvasEllipse( double x, double y, double width, double height )
1070    : wxCanvasObject()
1071 {
1072     m_x = x;
1073     m_y = y;
1074     m_width = width;
1075     m_height = height;
1076
1077     m_brush = *wxBLACK_BRUSH;
1078     m_pen = *wxTRANSPARENT_PEN;
1079     CalcBoundingBox();
1080 }
1081
1082 void wxCanvasEllipse::TransLate( double x, double y )
1083 {
1084     m_x += x;
1085     m_y += y;
1086     CalcBoundingBox();
1087 }
1088
1089 void wxCanvasEllipse::CalcBoundingBox()
1090 {
1091     m_bbox.SetMin( m_x, m_y );
1092     m_bbox.SetMax( m_x+m_width , m_y+m_height );
1093
1094     //include the pen width also
1095     m_bbox.EnLarge(m_pen.GetWidth()/2);
1096 }
1097
1098 void wxCanvasEllipse::Render(wxTransformMatrix* cworld, int clip_x, int clip_y, int clip_width, int clip_height )
1099 {
1100     if (!m_visible) return;
1101
1102     wxDC *dc = m_admin->GetActive()->GetDC();
1103     dc->SetClippingRegion(clip_x, clip_y, clip_width, clip_height);
1104     dc->SetBrush(m_brush);
1105     int pw=m_pen.GetWidth();
1106     m_pen.SetWidth(m_admin->LogicalToDeviceXRel(pw));
1107     dc->SetPen(m_pen);
1108     int x = m_admin->LogicalToDeviceX(cworld->GetValue(2,0) + m_x );
1109     int y = m_admin->LogicalToDeviceY(cworld->GetValue(2,1) + m_y );
1110     int w = m_admin->LogicalToDeviceXRel( m_width );
1111     int h = m_admin->LogicalToDeviceYRel( m_height );
1112     if (w > 0 && w < 1) w=1;
1113     if (w < 0 && w > -1) w=-1;
1114     if (h > 0 && h < 1) h=1;
1115     if (h < 0 && h > -1) h=-1;
1116     dc->DrawEllipse( x,y,w,h);
1117     dc->SetBrush(wxNullBrush);
1118     dc->SetPen(wxNullPen);
1119     dc->DestroyClippingRegion();
1120     m_pen.SetWidth(pw);
1121 }
1122
1123 void wxCanvasEllipse::WriteSVG( wxTextOutputStream &stream )
1124 {
1125 }
1126
1127 wxCanvasObject* wxCanvasEllipse::IsHitWorld( double x, double y, double margin )
1128 {
1129     if ((x >= m_bbox.GetMinX()-margin) &&
1130         (x <= m_bbox.GetMaxX()+margin) &&
1131         (y >= m_bbox.GetMinY()-margin) &&
1132         (y <= m_bbox.GetMaxY()+margin)
1133        )
1134     {
1135         double a=(m_width+m_pen.GetWidth())/2+margin ;
1136         double b=(m_height+m_pen.GetWidth())/2+margin;
1137         double c=pow((m_x+m_width/2-x)/a,2)+pow((m_y+m_height/2-y)/b,2);
1138         if ( 1 > c)
1139             return this;
1140         else
1141             return (wxCanvasObject*) NULL;
1142     }
1143     return (wxCanvasObject*) NULL;
1144 }
1145
1146 //----------------------------------------------------------------------------
1147 // wxCanvasEllipticArc
1148 //----------------------------------------------------------------------------
1149
1150 wxCanvasEllipticArc::wxCanvasEllipticArc( double x, double y, double width, double height, double start, double end )
1151    : wxCanvasObject()
1152 {
1153     m_x = x;
1154     m_y = y;
1155     m_width  = width;
1156     m_height = height;
1157     m_start  = start;
1158     m_end    = end;
1159
1160     m_brush = *wxBLACK_BRUSH;
1161     m_pen = *wxTRANSPARENT_PEN;
1162     CalcBoundingBox();
1163 }
1164
1165 void wxCanvasEllipticArc::TransLate( double x, double y )
1166 {
1167     m_x += x;
1168     m_y += y;
1169     CalcBoundingBox();
1170 }
1171
1172 void wxCanvasEllipticArc::CalcBoundingBox()
1173 {
1174     m_bbox.SetMin( m_x, m_y );
1175     m_bbox.SetMax( m_x+m_width , m_y+m_height );
1176
1177     //include the pen width also
1178     m_bbox.EnLarge(m_pen.GetWidth()/2);
1179 }
1180
1181 void wxCanvasEllipticArc::Render(wxTransformMatrix* cworld, int clip_x, int clip_y, int clip_width, int clip_height )
1182 {
1183     if (!m_visible) return;
1184
1185     wxDC *dc = m_admin->GetActive()->GetDC();
1186     dc->SetClippingRegion(clip_x, clip_y, clip_width, clip_height);
1187     dc->SetBrush(m_brush);
1188     int pw=m_pen.GetWidth();
1189     m_pen.SetWidth(m_admin->LogicalToDeviceXRel(pw));
1190     dc->SetPen(m_pen);
1191     int x = m_admin->LogicalToDeviceX(cworld->GetValue(2,0) + m_x );
1192     int y = m_admin->LogicalToDeviceY(cworld->GetValue(2,1) + m_y );
1193     int w = m_admin->LogicalToDeviceXRel( m_width );
1194     int h = m_admin->LogicalToDeviceYRel( m_height );
1195     if (w > 0 && w < 1) w=1;
1196     if (w < 0 && w > -1) w=-1;
1197     if (h > 0 && h < 1) h=1;
1198     if (h < 0 && h > -1) h=-1;
1199     if (m_admin->GetActive()->GetYaxis())
1200         dc->DrawEllipticArc( x,y,w,h,-m_end,-m_start);
1201     else
1202         dc->DrawEllipticArc( x,y,w,h,m_start,m_end);
1203     dc->SetBrush(wxNullBrush);
1204     dc->SetPen(wxNullPen);
1205     dc->DestroyClippingRegion();
1206     m_pen.SetWidth(pw);
1207 }
1208
1209 void wxCanvasEllipticArc::WriteSVG( wxTextOutputStream &stream )
1210 {
1211 }
1212
1213 wxCanvasObject* wxCanvasEllipticArc::IsHitWorld( double x, double y, double margin )
1214 {
1215     if ((x >= m_bbox.GetMinX()-margin) &&
1216         (x <= m_bbox.GetMaxX()+margin) &&
1217         (y >= m_bbox.GetMinY()-margin) &&
1218         (y <= m_bbox.GetMaxY()+margin)
1219        )
1220     {
1221         double a=(m_width+m_pen.GetWidth())/2+margin ;
1222         double b=(m_height+m_pen.GetWidth())/2+margin;
1223         double c=pow((m_x+m_width/2-x)/a,2)+pow((m_y+m_height/2-y)/b,2);
1224         if ( 1 > c)
1225             return this;
1226         else
1227             return (wxCanvasObject*) NULL;
1228     }
1229     return (wxCanvasObject*) NULL;
1230 }
1231
1232 //----------------------------------------------------------------------------
1233 // wxCanvasLine
1234 //----------------------------------------------------------------------------
1235
1236 wxCanvasLine::wxCanvasLine( double x1, double y1, double x2, double y2 )
1237    : wxCanvasObject()
1238 {
1239     m_x1 = x1;
1240     m_y1 = y1;
1241     m_x2 = x2;
1242     m_y2 = y2;
1243
1244     m_pen = *wxBLACK_PEN;
1245     CalcBoundingBox();
1246 }
1247
1248 void wxCanvasLine::TransLate( double x, double y )
1249 {
1250     m_x1 += x;
1251     m_y1 += y;
1252     m_x2 += x;
1253     m_y2 += y;
1254     CalcBoundingBox();
1255 }
1256
1257 void wxCanvasLine::CalcBoundingBox()
1258 {
1259     m_bbox.SetMin( m_x1 , m_y1);
1260     m_bbox.SetMax( m_x2 , m_y2);
1261
1262     //include the pen width also
1263     m_bbox.EnLarge(m_pen.GetWidth()/2);
1264 }
1265
1266 void wxCanvasLine::Render(wxTransformMatrix* cworld, int clip_x, int clip_y, int clip_width, int clip_height )
1267 {
1268     if (!m_visible) return;
1269
1270     double x1,y1,x2,y2;
1271     cworld->TransformPoint( m_x1, m_y1, x1, y1 );
1272     cworld->TransformPoint( m_x2, m_y2, x2, y2 );
1273     x1 = m_admin->LogicalToDeviceX( x1 );
1274     y1 = m_admin->LogicalToDeviceY( y1 );
1275     x2 = m_admin->LogicalToDeviceX( x2 );
1276     y2 = m_admin->LogicalToDeviceY( y2 );
1277
1278     wxDC *dc = m_admin->GetActive()->GetDC();
1279     dc->SetClippingRegion( clip_x, clip_y, clip_width, clip_height );
1280     int pw=m_pen.GetWidth();
1281     m_pen.SetWidth(m_admin->LogicalToDeviceXRel(pw));
1282     dc->SetPen( m_pen );
1283     dc->DrawLine( x1, y1, x2, y2 );
1284
1285     dc->DestroyClippingRegion();
1286     m_pen.SetWidth(pw);
1287 }
1288
1289 void wxCanvasLine::WriteSVG( wxTextOutputStream &stream )
1290 {
1291     // no idea
1292 }
1293
1294 wxCanvasObject* wxCanvasLine::IsHitWorld( double x, double y, double margin )
1295 {
1296     if ((x >= m_bbox.GetMinX()-margin) &&
1297         (x <= m_bbox.GetMaxX()+margin) &&
1298         (y >= m_bbox.GetMinY()-margin) &&
1299         (y <= m_bbox.GetMaxY()+margin)
1300        )
1301     {
1302         wxLine line1(m_x1,m_y1,m_x2,m_y2);
1303         wxPoint2DDouble P=wxPoint2DDouble(x,y);
1304         double distance;
1305         if (line1.PointInLine(P,distance,m_pen.GetWidth()/2+margin) == R_IN_AREA)
1306             return this;
1307         else
1308             return (wxCanvasObject*) NULL;
1309     }
1310     return (wxCanvasObject*) NULL;
1311 }
1312
1313 //----------------------------------------------------------------------------
1314 // wxCanvasImage
1315 //----------------------------------------------------------------------------
1316
1317 wxCanvasImage::wxCanvasImage( const wxImage &image, double x, double y, double w, double h )
1318    : wxCanvasObject()
1319 {
1320     m_x = x;
1321     m_y = y;
1322     m_width = w;
1323     m_height = h;
1324
1325     m_image = image;
1326
1327     m_orgw = m_image.GetWidth();
1328     m_orgh = m_image.GetHeight();
1329
1330     m_isImage = TRUE;
1331     CalcBoundingBox();
1332 }
1333
1334 void wxCanvasImage::SetPosXY( double x, double y)
1335 {
1336     m_x = x;
1337     m_y = y;
1338     CalcBoundingBox();
1339 }
1340
1341 void wxCanvasImage::TransLate( double x, double y )
1342 {
1343     m_x += x;
1344     m_y += y;
1345     CalcBoundingBox();
1346 }
1347
1348 void wxCanvasImage::CalcBoundingBox()
1349 {
1350     m_bbox.SetMin( m_x, m_y );
1351     m_bbox.SetMax( m_x + m_width, m_y + m_height );
1352 }
1353
1354 void wxCanvasImage::Render(wxTransformMatrix* cworld, int clip_x, int clip_y, int clip_width, int clip_height )
1355 {
1356     if (!m_visible) return;
1357
1358     wxRect tmparea;
1359
1360     tmparea.x = m_admin->LogicalToDeviceXRel( m_bbox.GetMinX());
1361     tmparea.y = m_admin->LogicalToDeviceYRel( m_bbox.GetMinY());
1362     tmparea.width = m_admin->LogicalToDeviceXRel( m_bbox.GetWidth() );
1363     tmparea.height = m_admin->LogicalToDeviceYRel( m_bbox.GetHeight() );
1364
1365     double x;
1366     double y;
1367     cworld->TransformPoint( m_x, m_y, x, y );
1368     x = m_admin->LogicalToDeviceX(x);
1369     y = m_admin->LogicalToDeviceY(y);
1370
1371
1372     // What is this???
1373     if (  m_orgw*5 < m_admin->LogicalToDeviceXRel( m_bbox.GetWidth()  ) ||
1374           m_orgw/5 > m_admin->LogicalToDeviceXRel( m_bbox.GetWidth()  ) ||
1375           m_orgh*5 < m_admin->LogicalToDeviceYRel( m_bbox.GetHeight() ) ||
1376           m_orgh/5 > m_admin->LogicalToDeviceYRel( m_bbox.GetHeight() )
1377        )
1378     {
1379         wxDC *dc = m_admin->GetActive()->GetDC();
1380         dc->SetClippingRegion(clip_x, clip_y, clip_width, clip_height);
1381         dc->SetBrush(*wxTRANSPARENT_BRUSH);
1382         dc->SetPen(*wxBLACK_PEN);
1383         //yes the whole not only the clipping region, because we have a pen also
1384         int x = m_admin->LogicalToDeviceX(cworld->GetValue(2,0) + m_x );
1385         int y = m_admin->LogicalToDeviceY(cworld->GetValue(2,1) + m_y );
1386         int w = m_admin->LogicalToDeviceXRel( m_width );
1387         int h = m_admin->LogicalToDeviceYRel( m_height );
1388         if (w < 1) w=1;
1389         if (h < 1) h=1;
1390         dc->DrawRectangle( x,y,w,h);
1391         dc->SetBrush(wxNullBrush);
1392         dc->SetPen(wxNullPen);
1393         dc->DestroyClippingRegion();
1394         return;
1395     }
1396
1397     wxImage tmp;
1398     bool is_cashed = FALSE;
1399
1400     if (m_cImage.Ok() && (m_cW == m_bbox.GetWidth()) && (m_cH == m_bbox.GetHeight()))
1401     {
1402         // use cached image
1403         tmp = m_cImage;
1404         is_cashed = TRUE;
1405     }
1406     else
1407     {
1408         if ((m_admin->LogicalToDeviceXRel( m_bbox.GetWidth() ) == m_image.GetWidth()) &&
1409             (m_admin->LogicalToDeviceYRel( m_bbox.GetHeight() ) == m_image.GetHeight()))
1410         {
1411             tmp = m_image;
1412         }
1413         else
1414         {
1415             tmp = m_image.Scale( m_admin->LogicalToDeviceXRel( m_bbox.GetWidth()),
1416                                  m_admin->LogicalToDeviceYRel( m_bbox.GetHeight()) );
1417         }
1418
1419         // create cached image
1420         m_cImage = tmp;
1421         m_cW = tmp.GetWidth();
1422         m_cH = tmp.GetHeight();
1423     }
1424
1425 //    wxPoint centr(m_admin->LogicalToDeviceX(m_x),m_admin->LogicalToDeviceY(m_y));
1426     wxPoint centr(0,0);
1427
1428     wxBitmap bmp;
1429
1430     if (m_cBitmap.Ok() && is_cashed && (m_cR == cworld->GetRotation()))
1431     {
1432         bmp = m_cBitmap;
1433     }
1434     else
1435     {
1436         if (cworld->GetRotation())
1437             tmp = tmp.Rotate(-cworld->GetRotation()/180.0 * pi, centr, TRUE, NULL );
1438
1439         bmp = wxBitmap(tmp);
1440
1441         // create cached bitmap
1442         m_cBitmap = bmp;
1443         m_cR = cworld->GetRotation();
1444     }
1445
1446     wxDC *dc = m_admin->GetActive()->GetDC();
1447
1448     wxPoint centr2;
1449     if (cworld->GetRotation()> 0)
1450     {
1451         centr2.x= (int) (x+m_height*sin(-cworld->GetRotation()/180.0 * pi));
1452         centr2.y= (int) y;
1453     }
1454     else
1455     {
1456         centr2.x= (int) x;
1457         centr2.y= (int) (y-m_width*sin(-cworld->GetRotation()/180.0 * pi));
1458     }
1459
1460     if (cworld->GetRotation() != 0)
1461     {
1462         //TODO clipping not right
1463             dc->DrawBitmap(bmp,centr2,TRUE );
1464 //        dc->DrawPoint(centr2);
1465 //        dc->DrawPoint(x,y);
1466     }
1467     else
1468     {
1469         dc->SetClippingRegion( clip_x, clip_y, clip_width, clip_height );
1470         dc->DrawBitmap( bmp, x, y, TRUE );
1471         dc->DestroyClippingRegion();
1472     }
1473 }
1474
1475 void wxCanvasImage::WriteSVG( wxTextOutputStream &stream )
1476 {
1477     // no idea
1478 }
1479
1480 //----------------------------------------------------------------------------
1481 // wxCanvasCtrl
1482 //----------------------------------------------------------------------------
1483
1484 wxCanvasControl::wxCanvasControl( wxWindow *control )
1485    : wxCanvasObject()
1486 {
1487     m_isControl = TRUE;
1488     m_control = control;
1489     CalcBoundingBox();
1490 }
1491
1492 double wxCanvasControl::GetPosX()
1493 {
1494     int x,y ;
1495     m_control->GetPosition( &x, &y );
1496     return m_admin->DeviceToLogicalX(x);
1497 }
1498
1499 double wxCanvasControl::GetPosY()
1500 {
1501     int x,y ;
1502     m_control->GetPosition( &x, &y );
1503     return m_admin->DeviceToLogicalY(y);
1504 }
1505
1506 void wxCanvasControl::SetPosXY( double x, double y)
1507 {
1508     int xd = m_admin->LogicalToDeviceX(x);
1509     int yd = m_admin->LogicalToDeviceY(y);
1510     m_control->Move(xd,yd);
1511 }
1512
1513
1514 void wxCanvasControl::TransLate( double x, double y )
1515 {
1516     int xdo,ydo;
1517     m_control->GetPosition( &xdo, &ydo );
1518     int xd = m_admin->LogicalToDeviceX(x)-xdo;
1519     int yd = m_admin->LogicalToDeviceY(y)-ydo;
1520     m_control->Move(xd,yd);
1521     CalcBoundingBox();
1522 }
1523
1524 wxCanvasControl::~wxCanvasControl()
1525 {
1526     m_control->Destroy();
1527 }
1528
1529 void wxCanvasControl::CalcBoundingBox()
1530 {
1531     wxRect tmparea;
1532
1533     m_control->GetSize( &tmparea.width, &tmparea.height );
1534     m_control->GetPosition( &tmparea.x, &tmparea.y );
1535
1536     m_bbox.SetMin( tmparea.x , tmparea.y);
1537     m_bbox.SetMax( tmparea.x + tmparea.width , tmparea.y + tmparea.height);
1538
1539 }
1540
1541 void wxCanvasControl::MoveRelative( double x, double y )
1542 {
1543     m_control->Move( m_admin->LogicalToDeviceX(x),  m_admin->LogicalToDeviceX(y) );
1544 }
1545
1546 //----------------------------------------------------------------------------
1547 // wxCanvasText
1548 //----------------------------------------------------------------------------
1549
1550 class wxFaceData
1551 {
1552 public:
1553 #if wxUSE_FREETYPE
1554      FT_Face   m_face;
1555 #else
1556      void     *m_dummy;
1557 #endif
1558 };
1559
1560 wxCanvasText::wxCanvasText( const wxString &text, double x, double y, const wxString &fontFile, int size )
1561    : wxCanvasObject()
1562 {
1563     m_text = text;
1564     m_fontFileName = fontFile;
1565     m_size = size;
1566
1567     m_red = 0;
1568     m_green = 0;
1569     m_blue = 0;
1570
1571     m_alpha = NULL;
1572
1573     m_x = x;
1574     m_y = y;
1575
1576 #if wxUSE_FREETYPE
1577     wxFaceData *data = new wxFaceData;
1578     m_faceData = data;
1579
1580     int error = FT_New_Face( g_freetypeLibrary,
1581                              m_fontFileName,
1582                              0,
1583                              &(data->m_face) );
1584
1585     error = FT_Set_Char_Size( data->m_face,
1586                               0,
1587                               m_size*64,
1588                               96,    // screen dpi
1589                               96 );
1590 #endif
1591     CalcBoundingBox();
1592 }
1593
1594 wxCanvasText::~wxCanvasText()
1595 {
1596 #if wxUSE_FREETYPE
1597     wxFaceData *data = (wxFaceData*) m_faceData;
1598     delete data;
1599 #endif
1600
1601     if (m_alpha) delete [] m_alpha;
1602 }
1603
1604 void wxCanvasText::SetRGB( unsigned char red, unsigned char green, unsigned char blue )
1605 {
1606     m_red = red;
1607     m_green = green;
1608     m_blue = blue;
1609 }
1610
1611 void wxCanvasText::SetFlag( int flag )
1612 {
1613     m_flag = flag;
1614 }
1615
1616 void wxCanvasText::Render(wxTransformMatrix* cworld, int clip_x, int clip_y, int clip_width, int clip_height )
1617 {
1618     if (!m_visible) return;
1619
1620     wxRect tmparea;
1621     tmparea.x = m_admin->LogicalToDeviceX( m_bbox.GetMinX());
1622     tmparea.y = m_admin->LogicalToDeviceY( m_bbox.GetMinY());
1623     tmparea.width = m_admin->LogicalToDeviceXRel( m_bbox.GetWidth() );
1624     tmparea.height = m_admin->LogicalToDeviceYRel( m_bbox.GetHeight() );
1625
1626     m_alpha = new unsigned char[tmparea.width*tmparea.height];
1627     memset( m_alpha, 0, tmparea.width*tmparea.height );
1628
1629     if (!m_alpha) return;
1630
1631 #if wxUSE_FREETYPE
1632     FT_Face face = ((wxFaceData*)m_faceData)->m_face;
1633     FT_GlyphSlot slot = face->glyph;
1634     int pen_x = 0;
1635     int pen_y = m_size;
1636
1637     for (int n = 0; n < (int)m_text.Len(); n++)
1638     {
1639         FT_UInt index = FT_Get_Char_Index( face, m_text[(unsigned int)n] );
1640
1641         int error = FT_Load_Glyph( face, index, FT_LOAD_DEFAULT );
1642         if (error) continue;
1643
1644         error = FT_Render_Glyph( face->glyph, ft_render_mode_normal );
1645         if (error) continue;
1646
1647         FT_Bitmap *bitmap = &slot->bitmap;
1648         unsigned char* buffer = bitmap->buffer;
1649         for (int y = 0; y < bitmap->rows; y++)
1650             for (int x = 0; x < bitmap->width; x++)
1651             {
1652                 unsigned char alpha = buffer[ y*bitmap->pitch + x ];
1653                 if (alpha == 0) continue;
1654
1655                 int xx = pen_x + slot->bitmap_left + x;
1656                 int yy = pen_y - slot->bitmap_top + y;
1657                 m_alpha[ yy * tmparea.width + xx ] = alpha;
1658             }
1659
1660         pen_x += slot->advance.x >> 6;
1661         pen_y += slot->advance.y >> 6;
1662     }
1663 #endif
1664
1665     wxBitmap *bitmap = m_admin->GetActive()->GetBuffer();
1666     wxRect sub_rect( clip_x, clip_y, clip_width, clip_height );
1667     wxBitmap sub_bitmap( bitmap->GetSubBitmap( sub_rect ) );
1668
1669     wxImage image( sub_bitmap.ConvertToImage() );
1670
1671     // local coordinates
1672     int start_x = clip_x - tmparea.x;
1673     int end_x = clip_width + start_x;
1674     int start_y = clip_y - tmparea.y;
1675     int end_y = clip_height + start_y;
1676
1677     for (int y = start_y; y < end_y; y++)
1678         for (int x = start_x; x < end_x; x++)
1679         {
1680             int alpha = m_alpha[y*tmparea.width + x];
1681             if (alpha)
1682             {
1683                 int image_x = x - start_x;
1684                 int image_y = y - start_y;
1685                 if (alpha == 255)
1686                 {
1687                     image.SetRGB( image_x, image_y, m_red, m_green, m_blue );
1688                     continue;
1689                 }
1690                 int red1 = (m_red * alpha) / 255;
1691                 int green1 = (m_green * alpha) / 255;
1692                 int blue1 = (m_blue * alpha) / 255;
1693
1694                 alpha = 255-alpha;
1695                 int red2 = image.GetRed( image_x, image_y );
1696                 int green2 = image.GetGreen( image_x, image_y );
1697                 int blue2 = image.GetBlue( image_x, image_y );
1698                 red2 = (red2 * alpha) / 255;
1699                 green2 = (green2 * alpha) / 255;
1700                 blue2 = (blue2 * alpha) / 255;
1701
1702                 image.SetRGB( image_x, image_y, red1+red2, green1+green2, blue1+blue2 );
1703             }
1704         }
1705
1706    sub_bitmap = wxBitmap(image);
1707
1708    wxDC *dc = m_admin->GetActive()->GetDC();
1709    dc->DrawBitmap( sub_bitmap, clip_x, clip_y );
1710 }
1711
1712 void wxCanvasText::WriteSVG( wxTextOutputStream &stream )
1713 {
1714 }
1715
1716 void wxCanvasText::TransLate( double x, double y )
1717 {
1718     m_x += x;
1719     m_y += y;
1720     CalcBoundingBox();
1721 }
1722
1723 void wxCanvasText::CalcBoundingBox()
1724 {
1725     if (m_alpha) delete [] m_alpha;
1726
1727     m_bbox.SetMin( m_x , m_y);
1728     m_bbox.SetMax( m_x + 100 , m_y + m_size + (m_size/2));
1729
1730
1731 }
1732
1733 //----------------------------------------------------------------------------
1734 // wxCanvas
1735 //----------------------------------------------------------------------------
1736
1737 IMPLEMENT_CLASS(wxCanvas,wxScrolledWindow)
1738
1739 BEGIN_EVENT_TABLE(wxCanvas,wxScrolledWindow)
1740     EVT_PAINT( wxCanvas::OnPaint )
1741     EVT_IDLE( wxCanvas::OnIdle )
1742     EVT_SIZE( wxCanvas::OnSize )
1743     EVT_MOUSE_EVENTS( wxCanvas::OnMouse )
1744     EVT_SET_FOCUS( wxCanvas::OnSetFocus )
1745     EVT_KILL_FOCUS( wxCanvas::OnKillFocus )
1746     EVT_ERASE_BACKGROUND( wxCanvas::OnEraseBackground )
1747 END_EVENT_TABLE()
1748
1749 wxCanvas::wxCanvas( wxCanvasAdmin* admin, wxWindow *parent, wxWindowID id,
1750     const wxPoint &position, const wxSize& size, long style ) :
1751     wxScrolledWindow( parent, id, position, size, style )
1752 {
1753     // These are unused in wxVectorCanvas
1754     m_bufferX = 0;
1755     m_bufferY = 0;
1756
1757     m_admin = admin;
1758     m_admin->Append( this );
1759
1760     m_needUpdate = FALSE;
1761     m_background = *wxWHITE;
1762     m_lastMouse = (wxCanvasObject*)NULL;
1763     m_captureMouse = (wxCanvasObject*)NULL;
1764     m_frozen = FALSE;
1765     m_oldDeviceX = 0;
1766     m_oldDeviceY = 0;
1767     m_root = (wxCanvasObjectGroup*)NULL;
1768 }
1769
1770 wxCanvas::~wxCanvas()
1771 {
1772     wxNode *node = m_updateRects.First();
1773     while (node)
1774     {
1775         wxRect *rect = (wxRect*) node->Data();
1776         delete rect;
1777         m_updateRects.DeleteNode( node );
1778         node = m_updateRects.First();
1779     }
1780 }
1781
1782 double wxCanvas::GetMinX() const
1783 {
1784     return 0.0;
1785 }
1786
1787 double wxCanvas::GetMinY() const
1788 {
1789     return 0.0;
1790 }
1791
1792 double wxCanvas::GetMaxX() const
1793 {
1794    int width;
1795    GetVirtualSize( &width, NULL );
1796    return width;
1797 }
1798
1799 double wxCanvas::GetMaxY() const
1800 {
1801    int height;
1802    GetVirtualSize( NULL, &height );
1803    return height;
1804 }
1805
1806 void wxCanvas::SetColour( const wxColour& background )
1807 {
1808     m_background = background;
1809     SetBackgroundColour( m_background );
1810
1811     if (m_frozen) return;
1812
1813     wxMemoryDC dc;
1814     dc.SelectObject( m_buffer );
1815     dc.SetPen( *wxTRANSPARENT_PEN );
1816     wxBrush brush( m_background, wxSOLID );
1817     dc.SetBrush( brush );
1818     dc.DrawRectangle( 0, 0, m_buffer.GetWidth(), m_buffer.GetHeight() );
1819     dc.SelectObject( wxNullBitmap );
1820 }
1821
1822 void wxCanvas::SetCaptureMouse( wxCanvasObject *obj )
1823 {
1824     if (obj)
1825     {
1826         wxWindow::CaptureMouse();
1827         m_captureMouse = obj;
1828     }
1829     else
1830     {
1831         wxWindow::ReleaseMouse();
1832         m_captureMouse = NULL;
1833     }
1834 }
1835
1836 void wxCanvas::Freeze()
1837 {
1838     m_frozen = TRUE;
1839 }
1840
1841 void wxCanvas::Thaw()
1842 {
1843     wxNode *node = m_updateRects.First();
1844     while (node)
1845     {
1846         wxRect *rect = (wxRect*) node->Data();
1847         delete rect;
1848         m_updateRects.DeleteNode( node );
1849         node = m_updateRects.First();
1850     }
1851
1852     m_frozen = FALSE;
1853
1854     if (m_buffer.Ok())
1855         Update( m_bufferX, m_bufferY, m_buffer.GetWidth(), m_buffer.GetHeight() );
1856 }
1857
1858 void wxCanvas::Update( int x, int y, int width, int height, bool blit )
1859 {
1860     CalcScrolledPosition( 0, 0, &m_oldDeviceX, &m_oldDeviceY );
1861
1862     m_admin->SetActive(this);
1863
1864     if (!m_root) return;
1865
1866     if (m_frozen) return;
1867
1868     // clip to buffer
1869     if (x < m_bufferX)
1870     {
1871         width -= m_bufferX-x;
1872         x = m_bufferX;
1873     }
1874     if (width <= 0) return;
1875
1876     if (y < m_bufferY)
1877     {
1878         height -= m_bufferY-y;
1879         y = m_bufferY;
1880     }
1881     if (height <= 0) return;
1882
1883     if (x+width > m_bufferX+m_buffer.GetWidth())
1884     {
1885         width = m_bufferX+m_buffer.GetWidth() - x;
1886     }
1887     if (width <= 0) return;
1888
1889     if (y+height > m_bufferY+m_buffer.GetHeight())
1890     {
1891         height = m_bufferY+m_buffer.GetHeight() - y;
1892     }
1893     if (height <= 0) return;
1894
1895     // update is within the buffer
1896     m_needUpdate = TRUE;
1897
1898     // has to be blitted to screen later
1899     if (blit)
1900     {
1901         m_updateRects.Append(
1902             (wxObject*) new wxRect( x,y,width,height ) );
1903     }
1904
1905     wxTransformMatrix cworld;
1906
1907     wxMemoryDC dc;
1908     dc.SelectObject( m_buffer );
1909
1910     dc.SetPen( *wxTRANSPARENT_PEN );
1911     wxBrush brush( m_background, wxSOLID );
1912     dc.SetBrush( brush );
1913     dc.SetLogicalFunction(wxCOPY);
1914
1915 #if 0
1916     if (width != m_buffer.GetWidth() && height != m_buffer.GetHeight())
1917     {
1918         dc.SetClippingRegion(x,y,width,height);
1919         dc.DrawRectangle(x-2,y-2,width+4,height+4);
1920         dc.DestroyClippingRegion();
1921     }
1922     else
1923     {
1924         dc.Clear();
1925         dc.DrawRectangle(0,0,m_buffer.GetWidth(),m_buffer.GetHeight());
1926     }
1927 #else
1928     // No idea, what the code up there does.
1929     dc.DrawRectangle( x-m_bufferX, y-m_bufferY, width, height );
1930 #endif
1931
1932     dc.SetBrush(wxNullBrush);
1933     dc.SetPen(wxNullPen);
1934
1935     dc.SetDeviceOrigin( m_oldDeviceX, m_oldDeviceY );
1936     m_renderDC = &dc;
1937
1938     m_root->Render( &cworld, x, y, width, height );
1939
1940     m_renderDC = NULL;
1941     dc.SelectObject( wxNullBitmap );
1942 }
1943
1944 void wxCanvas::BlitBuffer( wxDC &dc )
1945 {
1946     wxNode *node = m_updateRects.First();
1947     while (node)
1948     {
1949         wxRect *rect = (wxRect*) node->Data();
1950
1951         wxMemoryDC mdc;
1952         mdc.SelectObject( m_buffer );
1953         dc.Blit( rect->x,
1954                  rect->y,
1955                  rect->width,
1956                  rect->height,
1957                  &mdc,
1958                  rect->x - m_bufferX,
1959                  rect->y - m_bufferY );
1960         mdc.SelectObject( wxNullBitmap );
1961
1962         delete rect;
1963         m_updateRects.DeleteNode( node );
1964         node = m_updateRects.First();
1965     }
1966
1967     m_needUpdate = FALSE;
1968 }
1969
1970 void wxCanvas::UpdateNow()
1971 {
1972     if (m_frozen) return;
1973
1974     if (!m_needUpdate) return;
1975
1976     wxClientDC dc( this );
1977     PrepareDC( dc );
1978
1979     BlitBuffer( dc );
1980 }
1981
1982 void wxCanvas::OnSize(wxSizeEvent &event)
1983 {
1984     int w,h;
1985     GetClientSize( &w, &h );
1986     m_buffer = wxBitmap( w, h );
1987
1988     CalcUnscrolledPosition( 0, 0, &m_bufferX, &m_bufferY );
1989
1990     wxNode *node = m_updateRects.First();
1991     while (node)
1992     {
1993         wxRect *rect = (wxRect*) node->Data();
1994         delete rect;
1995         m_updateRects.DeleteNode( node );
1996         node = m_updateRects.First();
1997     }
1998
1999     m_frozen = FALSE;
2000
2001     Update( m_bufferX, m_bufferY, m_buffer.GetWidth(), m_buffer.GetHeight(), FALSE );
2002
2003     event.Skip();
2004 }
2005
2006 void wxCanvas::OnPaint(wxPaintEvent &event)
2007 {
2008     wxPaintDC dc(this);
2009     PrepareDC( dc );
2010
2011     if (!m_buffer.Ok()) return;
2012
2013     if (m_frozen) return;
2014
2015     m_needUpdate = TRUE;
2016
2017     wxRegionIterator it( GetUpdateRegion() );
2018     while (it)
2019     {
2020         int x = it.GetX();
2021         int y = it.GetY();
2022
2023         int w = it.GetWidth();
2024         int h = it.GetHeight();
2025
2026         if (x+w > m_buffer.GetWidth())
2027             w = m_buffer.GetWidth() - x;
2028         if (y+h > m_buffer.GetHeight())
2029             h = m_buffer.GetHeight() - y;
2030
2031         if ((w > 0) && (h > 0))
2032         {
2033             x += m_bufferX;
2034             y += m_bufferY;
2035             m_updateRects.Append( (wxObject*) new wxRect( x, y, w, h ) );
2036         }
2037
2038         it++;
2039     }
2040
2041     BlitBuffer( dc );
2042 }
2043
2044 void wxCanvas::ScrollWindow( int dx, int dy, const wxRect* rect )
2045 {
2046     // If any updates are pending, do them now since they will
2047     // expect the previous m_bufferX and m_bufferY as well as
2048     // the previous device origin values.
2049     wxClientDC dc( this );
2050     dc.SetDeviceOrigin( m_oldDeviceX, m_oldDeviceY );
2051     BlitBuffer( dc );
2052
2053     // The buffer always starts at the top left corner of the
2054     // client area. Indeed, it is the client area.
2055     CalcUnscrolledPosition( 0, 0, &m_bufferX, &m_bufferY );
2056
2057     // Update everything.
2058     Update( m_bufferX, m_bufferY, m_buffer.GetWidth(), m_buffer.GetHeight(), FALSE );
2059
2060     // Scroll, actually.
2061     wxWindow::ScrollWindow( dx, dy, rect );
2062 }
2063
2064 void wxCanvas::OnMouse(wxMouseEvent &event)
2065 {
2066     m_admin->SetActive(this);
2067     if (!m_root)
2068     {
2069         event.Skip();
2070         return;
2071     }
2072
2073     int x = event.GetX();
2074     int y = event.GetY();
2075
2076     //to world coordinates to do hit test in world coordinates
2077     double xw = DeviceToLogicalX( x );
2078     double yw = DeviceToLogicalY( y );
2079
2080     //make a select margin of 2 pixels, so also zero line thickness will be hit
2081     double margin = DeviceToLogicalXRel( 2 );
2082
2083     if (event.GetEventType() == wxEVT_MOTION)
2084     {
2085         if (m_captureMouse) //no matter what go to this one
2086         {
2087             wxMouseEvent child_event( wxEVT_MOTION );
2088             child_event.SetEventObject(m_captureMouse);
2089             child_event.m_x = x;
2090             child_event.m_y = y;
2091             child_event.m_leftDown = event.m_leftDown;
2092             child_event.m_rightDown = event.m_rightDown;
2093             child_event.m_middleDown = event.m_middleDown;
2094             child_event.m_controlDown = event.m_controlDown;
2095             child_event.m_shiftDown = event.m_shiftDown;
2096             child_event.m_altDown = event.m_altDown;
2097             child_event.m_metaDown = event.m_metaDown;
2098
2099             m_captureMouse->ProcessCanvasObjectEvent( child_event );
2100             return;
2101         }
2102         else
2103         {
2104             wxCanvasObject *obj = m_root->IsHitWorld(xw,yw,margin);
2105
2106             if (obj && !obj->IsControl())
2107             {
2108                 wxMouseEvent child_event( wxEVT_MOTION );
2109                 child_event.SetEventObject( obj );
2110                 child_event.m_x = x;
2111                 child_event.m_y = y;
2112                 child_event.m_leftDown = event.m_leftDown;
2113                 child_event.m_rightDown = event.m_rightDown;
2114                 child_event.m_middleDown = event.m_middleDown;
2115                 child_event.m_controlDown = event.m_controlDown;
2116                 child_event.m_shiftDown = event.m_shiftDown;
2117                 child_event.m_altDown = event.m_altDown;
2118                 child_event.m_metaDown = event.m_metaDown;
2119
2120                 if ((obj != m_lastMouse) && (m_lastMouse != NULL))
2121                 {
2122                     child_event.SetEventType( wxEVT_LEAVE_WINDOW );
2123                     child_event.SetEventObject( m_lastMouse );
2124                     child_event.m_x = x;
2125                     child_event.m_y = y;
2126                     m_lastMouse->ProcessCanvasObjectEvent( child_event );
2127
2128                     m_lastMouse = obj;
2129                     child_event.SetEventType( wxEVT_ENTER_WINDOW );
2130                     child_event.SetEventObject( m_lastMouse );
2131                     child_event.m_x = x;
2132                     child_event.m_y = y;
2133                     m_lastMouse->ProcessCanvasObjectEvent( child_event );
2134
2135                     child_event.SetEventType( wxEVT_MOTION );
2136                     child_event.SetEventObject( obj );
2137                 }
2138
2139                 obj->ProcessCanvasObjectEvent( child_event );
2140                 return;
2141             }
2142         }
2143         if (m_lastMouse)
2144         {
2145             wxMouseEvent child_event( wxEVT_LEAVE_WINDOW );
2146             child_event.SetEventObject( m_lastMouse );
2147             child_event.m_x = x;
2148             child_event.m_y = y;
2149             child_event.m_leftDown = event.m_leftDown;
2150             child_event.m_rightDown = event.m_rightDown;
2151             child_event.m_middleDown = event.m_middleDown;
2152             child_event.m_controlDown = event.m_controlDown;
2153             child_event.m_shiftDown = event.m_shiftDown;
2154             child_event.m_altDown = event.m_altDown;
2155             child_event.m_metaDown = event.m_metaDown;
2156             m_lastMouse->ProcessCanvasObjectEvent( child_event );
2157
2158             m_lastMouse = (wxCanvasObject*) NULL;
2159             return;
2160         }
2161     }
2162     else
2163     {
2164         if (m_captureMouse) //no matter what go to this one
2165         {
2166             wxMouseEvent child_event( event.GetEventType() );
2167             child_event.SetEventObject(m_captureMouse);
2168             child_event.m_x = x;
2169             child_event.m_y = y;
2170             child_event.m_leftDown = event.m_leftDown;
2171             child_event.m_rightDown = event.m_rightDown;
2172             child_event.m_middleDown = event.m_middleDown;
2173             child_event.m_controlDown = event.m_controlDown;
2174             child_event.m_shiftDown = event.m_shiftDown;
2175             child_event.m_altDown = event.m_altDown;
2176             child_event.m_metaDown = event.m_metaDown;
2177             m_captureMouse->ProcessCanvasObjectEvent( child_event );
2178         }
2179         else
2180         {
2181             wxCanvasObject *obj = m_root->IsHitWorld(xw,yw,margin);
2182
2183             if (obj && !obj->IsControl())
2184             {
2185                 wxMouseEvent child_event( event.GetEventType() );
2186                 child_event.SetEventObject( obj );
2187                 child_event.m_x = x;
2188                 child_event.m_y = y;
2189                 child_event.m_leftDown = event.m_leftDown;
2190                 child_event.m_rightDown = event.m_rightDown;
2191                 child_event.m_middleDown = event.m_middleDown;
2192                 child_event.m_controlDown = event.m_controlDown;
2193                 child_event.m_shiftDown = event.m_shiftDown;
2194                 child_event.m_altDown = event.m_altDown;
2195                 child_event.m_metaDown = event.m_metaDown;
2196
2197                 obj->ProcessCanvasObjectEvent( child_event );
2198                 return;
2199             }
2200         }
2201     }
2202
2203     event.Skip();
2204 }
2205
2206 void wxCanvas::OnIdle(wxIdleEvent &event)
2207 {
2208     m_admin->SetActive(this);
2209     UpdateNow();
2210     event.Skip();
2211 }
2212
2213 void wxCanvas::OnSetFocus(wxFocusEvent &event)
2214 {
2215     m_admin->SetActive(this);
2216 }
2217
2218 void wxCanvas::OnKillFocus(wxFocusEvent &event)
2219 {
2220 }
2221
2222
2223 void wxCanvas::OnEraseBackground(wxEraseEvent &event)
2224 {
2225 }
2226
2227 // coordinates conversions
2228 // -----------------------
2229 double wxCanvas::DeviceToLogicalX(int x) const
2230 {
2231     return (double)(x);
2232 }
2233
2234 double wxCanvas::DeviceToLogicalY(int y) const
2235 {
2236     return (double)(y);
2237 }
2238
2239 double wxCanvas::DeviceToLogicalXRel(int x) const
2240 {
2241     return (double)x;
2242 }
2243
2244 double wxCanvas::DeviceToLogicalYRel(int y) const
2245 {
2246     return (double)y;
2247 }
2248
2249 int wxCanvas::LogicalToDeviceX(double x) const
2250 {
2251     return (int)(x + 0.5);
2252 }
2253
2254 int wxCanvas::LogicalToDeviceY(double y) const
2255 {
2256     return (int)(y + 0.5);
2257 }
2258
2259 int wxCanvas::LogicalToDeviceXRel(double x) const
2260 {
2261     return (int)(x + 0.5);
2262 }
2263
2264 int wxCanvas::LogicalToDeviceYRel(double y) const
2265 {
2266     return (int)(y + 0.5);
2267 }
2268
2269 //----------------------------------------------------------------------------
2270 // wxVectorCanvas
2271 //----------------------------------------------------------------------------
2272
2273 IMPLEMENT_CLASS(wxVectorCanvas,wxCanvas)
2274
2275 BEGIN_EVENT_TABLE(wxVectorCanvas,wxCanvas)
2276     EVT_SCROLLWIN( wxVectorCanvas::OnScroll )
2277     EVT_CHAR( wxVectorCanvas::OnChar )
2278     EVT_SIZE( wxVectorCanvas::OnSize )
2279 END_EVENT_TABLE()
2280
2281 wxVectorCanvas::wxVectorCanvas( wxCanvasAdmin* admin, wxWindow *parent, wxWindowID id,
2282     const wxPoint &position, const wxSize& size, long style ) :
2283     wxCanvas( admin, parent, id, position, size, style )
2284 {
2285     m_scrolled = FALSE;
2286     m_yaxis = FALSE;
2287 }
2288
2289 double wxVectorCanvas::GetMinX() const
2290 {
2291     return m_virt_minX;
2292 }
2293
2294 double wxVectorCanvas::GetMinY() const
2295 {
2296     return m_virt_minY;
2297 }
2298
2299 double wxVectorCanvas::GetMaxX() const
2300 {
2301    return m_virt_maxX;
2302 }
2303
2304 double wxVectorCanvas::GetMaxY() const
2305 {
2306     return m_virt_maxY;
2307 }
2308
2309 void wxVectorCanvas::ScrollWindow( int dx, int dy, const wxRect* rect )
2310 {
2311     // If any updates are pending, do them now since they will
2312     // expect the previous m_bufferX and m_bufferY as well as
2313     // the previous device origin values.
2314     wxClientDC dc( this );
2315     dc.SetDeviceOrigin( m_oldDeviceX, m_oldDeviceY );
2316     BlitBuffer( dc );
2317
2318     if (dy != 0)
2319     {
2320         double dyv=DeviceToLogicalYRel(dy);
2321         m_virt_minY=m_virt_minY-dyv;
2322         m_virt_maxY=m_virt_maxY-dyv;
2323     }
2324     if (dx != 0)
2325     {
2326         double dxv=DeviceToLogicalXRel(dx);
2327         m_virt_minX=m_virt_minX-dxv;
2328         m_virt_maxX=m_virt_maxX-dxv;
2329     }
2330
2331     m_admin->SetActive(this);
2332     SetMappingScroll(m_virt_minX,m_virt_minY,m_virt_maxX,m_virt_maxY,FALSE);
2333
2334
2335     if (dy != 0)
2336     {
2337         if (dy > 0 && dy < m_buffer.GetHeight())
2338         {
2339             wxRect rect( 0, 0, m_buffer.GetWidth(), m_buffer.GetHeight()-dy);
2340             wxBitmap sub_bitmap( m_buffer.GetSubBitmap( rect ) );
2341             wxMemoryDC dcm;
2342             dcm.SelectObject( m_buffer );
2343             dcm.DrawBitmap( sub_bitmap, 0, dy, TRUE );
2344             dcm.SelectObject( wxNullBitmap );
2345
2346             Update( 0, 0, m_buffer.GetWidth(), dy, TRUE );
2347         }
2348         else  if (dy < 0 && dy > -m_buffer.GetHeight())
2349         {
2350             wxRect rect( 0, -dy, m_buffer.GetWidth(), m_buffer.GetHeight()+dy);
2351             wxBitmap sub_bitmap( m_buffer.GetSubBitmap( rect ) );
2352             wxMemoryDC dcm;
2353             dcm.SelectObject( m_buffer );
2354             dcm.DrawBitmap( sub_bitmap, 0, 0, TRUE );
2355             dcm.SelectObject( wxNullBitmap );
2356
2357             Update( 0, m_buffer.GetHeight()+dy, m_buffer.GetWidth(), m_buffer.GetHeight(), TRUE );
2358         }
2359         else
2360             Update( 0, 0, m_buffer.GetWidth(), m_buffer.GetHeight(), TRUE );
2361     }
2362
2363     if (dx != 0)
2364     {
2365         if (dx > 0 && dx < m_buffer.GetWidth())
2366         {
2367             wxRect rect( 0, 0, m_buffer.GetWidth()-dx, m_buffer.GetHeight());
2368             wxBitmap sub_bitmap( m_buffer.GetSubBitmap( rect ) );
2369             wxMemoryDC dcm;
2370             dcm.SelectObject( m_buffer );
2371             dcm.DrawBitmap( sub_bitmap, dx, 0, TRUE );
2372             dcm.SelectObject( wxNullBitmap );
2373
2374             Update( 0, 0, dx, m_buffer.GetHeight(), TRUE );
2375         }
2376         else if (dx < 0 && dx > -m_buffer.GetWidth())
2377         {
2378             wxRect rect( -dx, 0, m_buffer.GetWidth()+dx, m_buffer.GetHeight());
2379             wxBitmap sub_bitmap( m_buffer.GetSubBitmap( rect ) );
2380             wxMemoryDC dcm;
2381             dcm.SelectObject( m_buffer );
2382             dcm.DrawBitmap( sub_bitmap, 0, 0, TRUE );
2383             dcm.SelectObject( wxNullBitmap );
2384
2385             Update( m_buffer.GetWidth()+dx, 0, m_buffer.GetWidth(), m_buffer.GetHeight(), TRUE );
2386         }
2387         else
2388             Update( 0,0, m_buffer.GetWidth(), m_buffer.GetHeight(), TRUE );
2389     }
2390
2391     wxWindow::ScrollWindow( dx, dy, rect );
2392
2393     //must be done now because quick repeated scrolling will prevent wxPaint
2394     //from doing it properly
2395     UpdateNow();
2396 }
2397
2398 void wxVectorCanvas::OnSize(wxSizeEvent &event)
2399 {
2400     int w,h;
2401
2402     GetClientSize( &w, &h );
2403
2404     wxMemoryDC dc;
2405     m_buffer = wxBitmap( w, h );
2406     dc.SelectObject( m_buffer );
2407     dc.SetPen( *wxTRANSPARENT_PEN );
2408     wxBrush brush( m_background , wxSOLID );
2409     dc.SetBrush( brush );
2410     dc.DrawRectangle( 0, 0, m_buffer.GetWidth(), m_buffer.GetHeight() );
2411     dc.SelectObject( wxNullBitmap );
2412
2413     wxNode *node = m_updateRects.First();
2414     while (node)
2415     {
2416         wxRect *rect = (wxRect*) node->Data();
2417         delete rect;
2418         m_updateRects.DeleteNode( node );
2419         node = m_updateRects.First();
2420     }
2421
2422     m_frozen = FALSE;
2423
2424     m_admin->SetActive(this);
2425     SetMappingScroll(m_virt_minX,m_virt_minY,m_virt_maxX,m_virt_maxY,FALSE);
2426
2427     Update( 0,0, m_buffer.GetWidth(), m_buffer.GetHeight(), FALSE );
2428
2429 //    event.Skip();
2430 }
2431
2432 // maps the virtual window (Real drawing to the window coordinates
2433 // also used for zooming
2434 void wxVectorCanvas::SetMappingScroll( double vx1,    double vy1, double vx2, double vy2, bool border)
2435 {
2436     int dwxi,dwyi;
2437     GetClientSize(&dwxi,&dwyi);
2438
2439     if (vx2==vx1) vx2=vx1+100000;
2440     if (vy2==vy1) vy2=vy1+100000;
2441     m_virt_minX=vx1;
2442     m_virt_minY=vy1;
2443     m_virt_maxX=vx2;
2444     m_virt_maxY=vy2;
2445
2446     double dwx=dwxi;
2447     double dwy=dwyi;
2448     if (dwx==0) dwx=1;
2449     if (dwy==0) dwy=1;
2450
2451     double dvx = m_virt_maxX - m_virt_minX;
2452     double dvy = m_virt_maxY - m_virt_minY;
2453
2454     // calculate the scaling factor for the virtual window
2455     double temp_x=0;
2456     double temp_y=0;
2457     if ((dvy / dvx) < (dwy / dwx))
2458     {
2459         dvy = dvx * (dwy / dwx);
2460         // calculate the change in the coordinates
2461         temp_y = (dvy - (m_virt_maxY - m_virt_minY) )/ 2.0;
2462     }
2463     else
2464     {
2465         dvx = dvy * (dwx / dwy);
2466         // calculate the change in the coordinates
2467         temp_x = (dvx - (m_virt_maxX - m_virt_minX) )/ 2.0;
2468     }
2469
2470     // add or substract the change from the original coordinates
2471     m_virt_minX=m_virt_minX-temp_x;
2472     m_virt_minY=m_virt_minY-temp_y;
2473
2474     m_virt_maxX=m_virt_maxX+temp_x;
2475     m_virt_maxY=m_virt_maxY+temp_y;
2476
2477     // initialize the mapping_matrix used for mapping the
2478     // virtual windows to the drawing window
2479
2480      // make mappingmatrix
2481     m_mapping_matrix.Identity();
2482     if (!border)
2483     {
2484         // translate the drawing to 0,0
2485         if (m_yaxis)
2486             m_mapping_matrix.Translate(-m_virt_minX,-m_virt_maxY);
2487         else
2488             m_mapping_matrix.Translate(-m_virt_minX,-m_virt_minY);
2489     }
2490     else
2491     {
2492         // make a small white border around the drawing
2493         m_virt_minX=m_virt_minX- 0.05 * dvx;
2494         m_virt_minY=m_virt_minY- 0.05 * dvy;
2495
2496         m_virt_maxX=m_virt_maxX+ 0.05 * dvx;
2497         m_virt_maxY=m_virt_maxY+ 0.05 * dvy;
2498
2499         // translate the drawing to 0,0
2500         if (m_yaxis)
2501             m_mapping_matrix.Translate(-m_virt_minX,-m_virt_maxY);
2502         else
2503             m_mapping_matrix.Translate(-m_virt_minX,-m_virt_minY);
2504     }
2505
2506     double scalefactor_x = dwx;
2507     scalefactor_x /= (m_virt_maxX - m_virt_minX);
2508
2509     double scalefactor_y = dwy;
2510     scalefactor_y /= (m_virt_maxY - m_virt_minY);
2511
2512     // scale the drawing so it fit's in the window
2513     m_mapping_matrix.Scale(scalefactor_x, scalefactor_y, 0, 0);
2514
2515     // because of coordinate change mirror over X
2516     // 0,0 in graphic computerscreens: upperleft corner
2517     // 0,0 in cartesian: lowerleft corner
2518     if (m_yaxis)
2519     {
2520         m_mapping_matrix.Mirror();
2521     }
2522     // make inverse of mapping matrix
2523     // this is to set coordinates in the statusbar
2524     // and the calculate screencoordinates to world coordinates used
2525     // in zooming
2526     m_inverse_mapping=m_mapping_matrix;
2527     m_inverse_mapping.Invert();
2528
2529     if (m_scrolled)
2530         SetScroll(m_virtm_minX,m_virtm_minY,m_virtm_maxX,m_virtm_maxY);
2531
2532     int dx2,dy2;
2533     GetClientSize(&dx2,&dy2);
2534     if ( dwxi != dx2 || dwyi  != dy2) //scrollbar is/became empty
2535         SetScroll(m_virtm_minX,m_virtm_minY,m_virtm_maxX,m_virtm_maxY);
2536 }
2537
2538
2539 void wxVectorCanvas::SetScroll(double vx1,double vy1,double vx2,double vy2)
2540 {
2541     m_virtm_minX=vx1;
2542     m_virtm_minY=vy1;
2543     m_virtm_maxX=vx2;
2544     m_virtm_maxY=vy2;
2545
2546     double dvx = m_virt_maxX - m_virt_minX;
2547     double dvy = m_virt_maxY - m_virt_minY;
2548     double dmvx = m_virtm_maxX - m_virtm_minX;
2549     double dmvy = m_virtm_maxY - m_virtm_minY;
2550
2551     SetScrollbar(wxHORIZONTAL,(m_virt_minX-m_virtm_minX)/dmvx *1000,dvx/dmvx *1000,1000,FALSE);
2552     if (m_yaxis)
2553     {
2554         SetScrollbar(wxVERTICAL,(m_virtm_maxY-m_virt_maxY)/dmvy *1000,dvy/dmvy *1000,1000,FALSE);
2555     }
2556     else
2557     {
2558         SetScrollbar(wxVERTICAL,(m_virt_minY-m_virtm_minY)/dmvy *1000,dvy/dmvy *1000,1000,FALSE);
2559     }
2560
2561     m_scrolled=TRUE;
2562 }
2563
2564 // coordinates conversions
2565 // -----------------------
2566 double wxVectorCanvas::DeviceToLogicalX(int x) const
2567 {
2568     return m_inverse_mapping.GetValue(0,0) * x + m_inverse_mapping.GetValue(2,0);
2569 }
2570
2571 double wxVectorCanvas::DeviceToLogicalY(int y) const
2572 {
2573     return m_inverse_mapping.GetValue(1,1) * y + m_inverse_mapping.GetValue(2,1);
2574 }
2575
2576 double wxVectorCanvas::DeviceToLogicalXRel(int x) const
2577 {
2578     return x*m_inverse_mapping.GetValue(0,0);
2579 }
2580
2581 double wxVectorCanvas::DeviceToLogicalYRel(int y) const
2582 {
2583     return y*m_inverse_mapping.GetValue(1,1);
2584 }
2585
2586 int wxVectorCanvas::LogicalToDeviceX(double x) const
2587 {
2588     return (int) (m_mapping_matrix.GetValue(0,0) * x + m_mapping_matrix.GetValue(2,0) + 0.5);
2589 }
2590
2591 int wxVectorCanvas::LogicalToDeviceY(double y) const
2592 {
2593     return (int) (m_mapping_matrix.GetValue(1,1) * y + m_mapping_matrix.GetValue(2,1) + 0.5);
2594 }
2595
2596 int wxVectorCanvas::LogicalToDeviceXRel(double x) const
2597 {
2598     return (int) (x*m_mapping_matrix.GetValue(0,0) + 0.5);
2599 }
2600
2601 int wxVectorCanvas::LogicalToDeviceYRel(double y) const
2602 {
2603     return (int) (y*m_mapping_matrix.GetValue(1,1) + 0.5);
2604 }
2605
2606
2607 // return the inverse mapping matrix for zooming or coordinates
2608 wxTransformMatrix wxVectorCanvas::GetInverseMappingMatrix()
2609 {
2610     return m_inverse_mapping;
2611 }
2612
2613 wxTransformMatrix wxVectorCanvas::GetMappingMatrix()
2614 {
2615     return m_mapping_matrix;
2616 }
2617
2618
2619 // ----------------------------------------------------------------------------
2620 // scrolling behaviour
2621 // ----------------------------------------------------------------------------
2622
2623 void wxVectorCanvas::OnScroll(wxScrollWinEvent& event)
2624 {
2625     if (event.GetEventType()==wxEVT_SCROLLWIN_THUMBRELEASE)
2626     {
2627         if (event.GetOrientation()==wxHORIZONTAL)
2628         {
2629           double x=m_virtm_minX+event.GetPosition()/1000.0*(m_virtm_maxX-m_virtm_minX);
2630           x=LogicalToDeviceXRel(x-m_virt_minX);
2631           ScrollWindow(-x, 0, (const wxRect *) NULL);
2632         }
2633         else
2634         {
2635           double y=m_virtm_minY+event.GetPosition()/1000.0*(m_virtm_maxY-m_virtm_minY);
2636           y=LogicalToDeviceYRel(y-m_virt_minY);
2637           ScrollWindow(0, -y, (const wxRect *) NULL);
2638         }
2639     }
2640     else if (event.GetEventType()==wxEVT_SCROLLWIN_PAGEUP)
2641     {
2642         if (event.GetOrientation()==wxHORIZONTAL)
2643         {
2644           double x=GetBufferWidth();
2645           ScrollWindow(x, 0, (const wxRect *) NULL);
2646         }
2647         else
2648         {
2649           double y=GetBufferHeight();
2650           ScrollWindow(0, y, (const wxRect *) NULL);
2651         }
2652     }
2653     else if (event.GetEventType()==wxEVT_SCROLLWIN_PAGEDOWN)
2654     {
2655         if (event.GetOrientation()==wxHORIZONTAL)
2656         {
2657           double x=-GetBufferWidth();
2658           ScrollWindow(x, 0, (const wxRect *) NULL);
2659         }
2660         else
2661         {
2662           double y=-GetBufferHeight();
2663           ScrollWindow(0, y, (const wxRect *) NULL);
2664         }
2665     }
2666     else if (event.GetEventType()==wxEVT_SCROLLWIN_LINEUP)
2667     {
2668         if (event.GetOrientation()==wxHORIZONTAL)
2669         {
2670           int x=GetBufferWidth()/10;
2671           ScrollWindow(x, 0, (const wxRect *) NULL);
2672         }
2673         else
2674         {
2675           int y=GetBufferHeight()/10;
2676           ScrollWindow(0, y, (const wxRect *) NULL);
2677         }
2678     }
2679     else if (event.GetEventType()==wxEVT_SCROLLWIN_LINEDOWN)
2680     {
2681         if (event.GetOrientation()==wxHORIZONTAL)
2682         {
2683           int x=-GetBufferWidth()/10;
2684           ScrollWindow(x, 0, (const wxRect *) NULL);
2685         }
2686         else
2687         {
2688           int y=-GetBufferHeight()/10;
2689           ScrollWindow(0, y, (const wxRect *) NULL);
2690         }
2691     }
2692
2693 }
2694
2695 void wxVectorCanvas::OnChar(wxKeyEvent& event)
2696 {
2697     switch ( event.KeyCode() )
2698     {
2699         case WXK_PAGEUP:
2700         case WXK_PRIOR:
2701             {
2702               double y=GetBufferHeight();
2703               ScrollWindow(0, y, (const wxRect *) NULL);
2704             }
2705             break;
2706         case WXK_PAGEDOWN:
2707         case WXK_NEXT:
2708             {
2709               double y=-GetBufferHeight();
2710               ScrollWindow(0, y, (const wxRect *) NULL);
2711             }
2712             break;
2713         case WXK_HOME:
2714             {
2715                 double y=m_virtm_minY;
2716                 y=LogicalToDeviceYRel(y-m_virt_minY);
2717                 ScrollWindow(0, -y, (const wxRect *) NULL);
2718             }
2719             break;
2720         case WXK_END:
2721             {
2722                 double y=m_virtm_minY+(m_virtm_maxY-m_virtm_minY);
2723                 y=LogicalToDeviceYRel(y-m_virt_minY);
2724                 ScrollWindow(0, -y, (const wxRect *) NULL);
2725             }
2726             break;
2727         case WXK_UP:
2728             {
2729                 int y;
2730                 if  (!event.ControlDown())
2731                     y=GetBufferHeight()/10;
2732                 else
2733                     y=GetBufferHeight();
2734                 ScrollWindow(0, y, (const wxRect *) NULL);
2735             }
2736             break;
2737
2738         case WXK_DOWN:
2739             {
2740                 int y;
2741                 if  (!event.ControlDown())
2742                     y=-GetBufferHeight()/10;
2743                 else
2744                     y=-GetBufferHeight();
2745                 ScrollWindow(0, y, (const wxRect *) NULL);
2746             }
2747             break;
2748
2749         case WXK_LEFT:
2750             {
2751                 int x;
2752                 if  (!event.ControlDown())
2753                     x=GetBufferWidth()/10;
2754                 else
2755                     x=GetBufferWidth();
2756                 ScrollWindow(x, 0, (const wxRect *) NULL);
2757             }
2758             break;
2759         case WXK_RIGHT:
2760             {
2761                 int x;
2762                 if  (!event.ControlDown())
2763                     x=-GetBufferWidth()/10;
2764                 else
2765                     x=-GetBufferWidth();
2766                 ScrollWindow(x, 0, (const wxRect *) NULL);
2767             }
2768             break;
2769         default:
2770             // not for us
2771             event.Skip();
2772     }
2773 }
2774
2775
2776 //----------------------------------------------------------------------------
2777 // wxCanvasAdmin
2778 //----------------------------------------------------------------------------
2779
2780 wxCanvasAdmin::wxCanvasAdmin()
2781 {
2782
2783 }
2784
2785 wxCanvasAdmin::~wxCanvasAdmin()
2786 {
2787 }
2788
2789
2790 void wxCanvasAdmin::Append( wxCanvas* canvas )
2791 {
2792     m_canvaslist.Append( canvas );
2793 }
2794
2795 void wxCanvasAdmin::Remove( wxCanvas* canvas )
2796 {
2797     m_canvaslist.DeleteObject( canvas );
2798 }
2799
2800 void wxCanvasAdmin::Update(wxCanvasObject* obj, double x, double y, double width, double height)
2801 {
2802     wxNode *node = m_canvaslist.First();
2803     while (node)
2804     {
2805
2806         wxCanvas *canvas = (wxCanvas*) node->Data();
2807
2808         if (m_active == canvas)
2809         {
2810             int xi = canvas->LogicalToDeviceX( x);
2811             int yi = canvas->LogicalToDeviceY( y);
2812             int wi = canvas->LogicalToDeviceXRel( width );
2813             int hi = canvas->LogicalToDeviceYRel( height);
2814             //update a little more then is strictly needed,
2815             //to get rid of the 1 bit bugs
2816             if (canvas->GetYaxis())
2817                 canvas->Update( xi-2, yi+hi-2, wi+4, -hi+4);
2818             else
2819                 canvas->Update( xi-2, yi-2, wi+4, hi+4);
2820         }
2821         else
2822         {   wxCanvasObject* topobj=canvas->GetRoot()->Contains(obj);
2823             if (topobj)
2824             {
2825                 wxCanvas* tcanvas = m_active;
2826                 SetActive(canvas);
2827
2828                 /*
2829                 //KKK TODO somehow the next does not work for update i do not know why
2830                 canvas->GetRoot()->CalcBoundingBox();
2831                 int xi = topobj->GetX();
2832                 int yi = topobj->GetY();
2833                 int wi = topobj->GetWidth();
2834                 int hi = topobj->GetHeight();
2835                 */
2836                 canvas->Update( 0,0, canvas->GetBufferWidth(),canvas->GetBufferHeight());
2837                 SetActive(tcanvas);
2838             }
2839         }
2840
2841         node = node->Next();
2842     }
2843 }
2844
2845 void wxCanvasAdmin::UpdateNow()
2846 {
2847     wxNode *node = m_canvaslist.First();
2848     while (node)
2849     {
2850         wxCanvas *canvas = (wxCanvas*) node->Data();
2851
2852         canvas->UpdateNow();
2853         node = node->Next();
2854     }
2855 }
2856
2857 // coordinates conversions
2858 // -----------------------
2859 double wxCanvasAdmin::DeviceToLogicalX(int x) const
2860 {
2861     return m_active->DeviceToLogicalX(x);
2862 }
2863
2864 double wxCanvasAdmin::DeviceToLogicalY(int y) const
2865 {
2866     return m_active->DeviceToLogicalY(y);
2867 }
2868
2869 double wxCanvasAdmin::DeviceToLogicalXRel(int x) const
2870 {
2871     return m_active->DeviceToLogicalXRel(x);
2872 }
2873
2874 double wxCanvasAdmin::DeviceToLogicalYRel(int y) const
2875 {
2876     return m_active->DeviceToLogicalYRel(y);
2877 }
2878
2879 int wxCanvasAdmin::LogicalToDeviceX(double x) const
2880 {
2881     return m_active->LogicalToDeviceX(x);
2882 }
2883
2884 int wxCanvasAdmin::LogicalToDeviceY(double y) const
2885 {
2886     return m_active->LogicalToDeviceY(y);
2887 }
2888
2889 int wxCanvasAdmin::LogicalToDeviceXRel(double x) const
2890 {
2891     return m_active->LogicalToDeviceXRel(x);
2892 }
2893
2894 int wxCanvasAdmin::LogicalToDeviceYRel(double y) const
2895 {
2896     return m_active->LogicalToDeviceYRel(y);
2897 }
2898
2899 void wxCanvasAdmin::SetActive(wxCanvas* activate)
2900 {
2901     wxNode *node = m_canvaslist.First();
2902     while (node)
2903     {
2904         wxCanvas *canvas = (wxCanvas*) node->Data();
2905
2906         if (activate == canvas)
2907         {
2908             m_active=canvas;
2909             break;
2910         }
2911         node = node->Next();
2912     }
2913 }
2914 //--------------------------------------------------------------------
2915 // wxCanvasModule
2916 //--------------------------------------------------------------------
2917
2918 class wxCanvasModule : public wxModule
2919 {
2920 public:
2921     virtual bool OnInit();
2922     virtual void OnExit();
2923
2924 private:
2925     DECLARE_DYNAMIC_CLASS(wxCanvasModule)
2926 };
2927
2928 IMPLEMENT_DYNAMIC_CLASS(wxCanvasModule, wxModule)
2929
2930 bool wxCanvasModule::OnInit()
2931 {
2932 #if wxUSE_FREETYPE
2933     int error = FT_Init_FreeType( &g_freetypeLibrary );
2934     if (error) return FALSE;
2935 #endif
2936
2937     return TRUE;
2938 }
2939
2940 void wxCanvasModule::OnExit()
2941 {
2942 #if wxUSE_FREETYPE
2943     FT_Done_FreeType( g_freetypeLibrary );
2944 #endif
2945 }
2946
2947
2948
2949