contrib/src/gizmos/splittree.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        splittree.cpp
   3 // Purpose:     Classes to achieve a remotely-scrolled tree in a splitter
   4 //              window that can be scrolled by a scrolled window higher in the
   5 //              hierarchy
   6 // Author:      Julian Smart
   7 // Modified by:
   8 // Created:     8/7/2000
   9 // RCS-ID:      $Id$
  10 // Copyright:   (c) Julian Smart
  11 // Licence:     wxWindows licence
  12 /////////////////////////////////////////////////////////////////////////////
  13
  14 // ============================================================================
  15 // declarations
  16 // ============================================================================
  17
  18 // ----------------------------------------------------------------------------
  19 // headers
  20 // ----------------------------------------------------------------------------
  21 #ifdef __GNUG__
  22     #pragma implementation "splittree.h"
  23 #endif
  24
  25 // For compilers that support precompilation, includes "wx/wx.h".
  26 #include "wx/wxprec.h"
  27
  28 #ifdef __BORLANDC__
  29     #pragma hdrstop
  30 #endif
  31
  32 // for all others, include the necessary headers (this file is usually all you
  33 // need because it includes almost all "standard" wxWindows headers)
  34 #ifndef WX_PRECOMP
  35     #include "wx/wx.h"
  36 #endif
  37
  38 #ifdef __WXMSW__
  39 #include <windows.h>
  40 #include "wx/msw/winundef.h"
  41 #endif
  42
  43 #include "wx/gizmos/splittree.h"
  44 #include <math.h>
  45
  46 /*
  47  * wxRemotelyScrolledTreeCtrl
  48  */
  49
  50 #if USE_GENERIC_TREECTRL
  51 IMPLEMENT_CLASS(wxRemotelyScrolledTreeCtrl, wxGenericTreeCtrl)
  52 #else
  53 IMPLEMENT_CLASS(wxRemotelyScrolledTreeCtrl, wxTreeCtrl)
  54 #endif
  55
  56 #if USE_GENERIC_TREECTRL
  57 BEGIN_EVENT_TABLE(wxRemotelyScrolledTreeCtrl, wxGenericTreeCtrl)
  58 #else
  59 BEGIN_EVENT_TABLE(wxRemotelyScrolledTreeCtrl, wxTreeCtrl)
  60 #endif
  61         EVT_SIZE(wxRemotelyScrolledTreeCtrl::OnSize)
  62         EVT_TREE_ITEM_EXPANDED(-1, wxRemotelyScrolledTreeCtrl::OnExpand)
  63         EVT_TREE_ITEM_COLLAPSED(-1, wxRemotelyScrolledTreeCtrl::OnExpand)
  64         EVT_SCROLLWIN(wxRemotelyScrolledTreeCtrl::OnScroll)
  65 END_EVENT_TABLE()
  66
  67 wxRemotelyScrolledTreeCtrl::wxRemotelyScrolledTreeCtrl(wxWindow* parent, wxWindowID id, const wxPoint& pt,
  68         const wxSize& sz, long style):
  69         wxTreeCtrl(parent, id, pt, sz, style)
  70 {
  71         m_companionWindow = NULL;
  72 }
  73
  74 wxRemotelyScrolledTreeCtrl::~wxRemotelyScrolledTreeCtrl()
  75 {
  76 }
  77
  78 void wxRemotelyScrolledTreeCtrl::HideVScrollbar()
  79 {
  80 #if defined(__WXMSW__)
  81 #if USE_GENERIC_TREECTRL
  82     if (!IsKindOf(CLASSINFO(wxGenericTreeCtrl)))
  83 #endif
  84     {
  85         ::ShowScrollBar((HWND) GetHWND(), SB_VERT, FALSE);
  86     }
  87 #if USE_GENERIC_TREECTRL
  88     else
  89     {
  90         // Implicit in overriding SetScrollbars
  91     }
  92 #endif
  93 #endif
  94 }
  95
  96 // Number of pixels per user unit (0 or -1 for no scrollbar)
  97 // Length of virtual canvas in user units
  98 // Length of page in user units
  99 void wxRemotelyScrolledTreeCtrl::SetScrollbars(int pixelsPerUnitX, int pixelsPerUnitY,
 100                              int noUnitsX, int noUnitsY,
 101                              int xPos, int yPos,
 102                              bool noRefresh)
 103 {
 104 #if USE_GENERIC_TREECTRL || !defined(__WXMSW__)
 105     if (IsKindOf(CLASSINFO(wxGenericTreeCtrl)))
 106     {
 107         wxGenericTreeCtrl* win = (wxGenericTreeCtrl*) this;
 108         win->wxGenericTreeCtrl::SetScrollbars(pixelsPerUnitX, 0, noUnitsX, 0, xPos, 0, noRefresh);
 109
 110             wxScrolledWindow* scrolledWindow = GetScrolledWindow();
 111             if (scrolledWindow)
 112             {
 113             scrolledWindow->SetScrollbars(0, pixelsPerUnitY, 0, noUnitsY, 0, yPos, noRefresh);
 114         }
 115     }
 116 #endif
 117 }
 118
 119 // In case we're using the generic tree control.
 120 int wxRemotelyScrolledTreeCtrl::GetScrollPos(int orient) const
 121 {
 122     wxScrolledWindow* scrolledWindow = GetScrolledWindow();
 123
 124 #if USE_GENERIC_TREECTRL || !defined(__WXMSW__)
 125     if (IsKindOf(CLASSINFO(wxGenericTreeCtrl)))
 126     {
 127         wxGenericTreeCtrl* win = (wxGenericTreeCtrl*) this;
 128
 129         if (orient == wxHORIZONTAL)
 130             return win->wxGenericTreeCtrl::GetScrollPos(orient);
 131         else
 132         {
 133             return scrolledWindow->GetScrollPos(orient);
 134         }
 135     }
 136 #endif
 137     return 0;
 138 }
 139
 140
 141 // In case we're using the generic tree control.
 142 // Get the view start
 143 void wxRemotelyScrolledTreeCtrl::GetViewStart(int *x, int *y) const
 144 {
 145     wxScrolledWindow* scrolledWindow = GetScrolledWindow();
 146
 147 #if USE_GENERIC_TREECTRL || !defined(__WXMSW__)
 148     if (IsKindOf(CLASSINFO(wxGenericTreeCtrl)))
 149     {
 150
 151         wxGenericTreeCtrl* win = (wxGenericTreeCtrl*) this;
 152         int x1, y1, x2, y2;
 153         win->wxGenericTreeCtrl::GetViewStart(& x1, & y1);
 154         * x = x1; * y = y1;
 155         if (!scrolledWindow)
 156             return;
 157
 158         scrolledWindow->GetViewStart(& x2, & y2);
 159         * y = y2;
 160     }
 161         else
 162 #endif
 163         {
 164                 // x is wrong since the horizontal scrollbar is controlled by the
 165                 // tree control, but we probably don't need it.
 166         scrolledWindow->GetViewStart(x, y);
 167         }
 168 }
 169
 170 // In case we're using the generic tree control.
 171 void wxRemotelyScrolledTreeCtrl::PrepareDC(wxDC& dc)
 172 {
 173 #if USE_GENERIC_TREECTRL || !defined(__WXMSW__)
 174     if (IsKindOf(CLASSINFO(wxGenericTreeCtrl)))
 175     {
 176             wxScrolledWindow* scrolledWindow = GetScrolledWindow();
 177
 178         wxGenericTreeCtrl* win = (wxGenericTreeCtrl*) this;
 179
 180         int startX, startY;
 181         GetViewStart(& startX, & startY);
 182
 183         int xppu1, yppu1, xppu2, yppu2;
 184         win->wxGenericTreeCtrl::GetScrollPixelsPerUnit(& xppu1, & yppu1);
 185         scrolledWindow->GetScrollPixelsPerUnit(& xppu2, & yppu2);
 186
 187         dc.SetDeviceOrigin( -startX * xppu1, -startY * yppu2 );
 188         // dc.SetUserScale( win->GetScaleX(), win->GetScaleY() );
 189     }
 190 #endif
 191 }
 192
 193 // Scroll to the given line (in scroll units where each unit is
 194 // the height of an item)
 195 void wxRemotelyScrolledTreeCtrl::ScrollToLine(int posHoriz, int posVert)
 196 {
 197 #ifdef __WXMSW__
 198 #if USE_GENERIC_TREECTRL
 199     if (!IsKindOf(CLASSINFO(wxGenericTreeCtrl)))
 200 #endif
 201     {
 202             UINT sbCode = SB_THUMBPOSITION;
 203             HWND vertScrollBar = 0;
 204             MSWDefWindowProc((WXUINT) WM_VSCROLL, MAKELONG(sbCode, posVert), (WXHWND) vertScrollBar);
 205     }
 206 #if USE_GENERIC_TREECTRL
 207     else
 208 #endif
 209 #endif
 210 #if USE_GENERIC_TREECTRL || !defined(__WXMSW__)
 211     {
 212         wxGenericTreeCtrl* win = (wxGenericTreeCtrl*) this;
 213                 win->Refresh();
 214                 /* Doesn't work yet because scrolling is ignored by Scroll
 215         int xppu, yppu;
 216             wxScrolledWindow* scrolledWindow = GetScrolledWindow();
 217             if (scrolledWindow)
 218             {
 219                         scrolledWindow->GetScrollPixelsPerUnit(& xppu, & yppu);
 220                         win->Scroll(-1, posVert*yppu);
 221                 }
 222                 */
 223     }
 224 #endif
 225 }
 226
 227 void wxRemotelyScrolledTreeCtrl::OnSize(wxSizeEvent& event)
 228 {
 229         HideVScrollbar();
 230         AdjustRemoteScrollbars();
 231         event.Skip();
 232 }
 233
 234 void wxRemotelyScrolledTreeCtrl::OnExpand(wxTreeEvent& event)
 235 {
 236         AdjustRemoteScrollbars();
 237         event.Skip();
 238
 239     // If we don't have this, we get some bits of lines still remaining
 240     if (event.GetEventType() == wxEVT_COMMAND_TREE_ITEM_COLLAPSED)
 241         Refresh();
 242
 243         // Pass on the event
 244         if (m_companionWindow)
 245                 m_companionWindow->GetEventHandler()->ProcessEvent(event);
 246 }
 247
 248 // Adjust the containing wxScrolledWindow's scrollbars appropriately
 249 void wxRemotelyScrolledTreeCtrl::AdjustRemoteScrollbars()
 250 {
 251 #if USE_GENERIC_TREECTRL || !defined(__WXMSW__)
 252     if (IsKindOf(CLASSINFO(wxGenericTreeCtrl)))
 253         {
 254                 // This is for the generic tree control.
 255                 // It calls SetScrollbars which has been overridden
 256                 // to adjust the parent scrolled window vertical
 257                 // scrollbar.
 258                 ((wxGenericTreeCtrl*) this)->AdjustMyScrollbars();
 259         return;
 260         }
 261         else
 262 #endif
 263         {
 264                 // This is for the wxMSW tree control
 265                 wxScrolledWindow* scrolledWindow = GetScrolledWindow();
 266                 if (scrolledWindow)
 267                 {
 268                         wxRect itemRect;
 269                         if (GetBoundingRect(GetRootItem(), itemRect))
 270                         {
 271                 // Actually, the real height seems to be 1 less than reported
 272                 // (e.g. 16 instead of 16)
 273                 int itemHeight = itemRect.GetHeight() - 1;
 274
 275                                 int w, h;
 276                                 GetClientSize(&w, &h);
 277
 278                                 wxRect rect(0, 0, 0, 0);
 279                                 CalcTreeSize(rect);
 280
 281                 double f = ((double) (rect.GetHeight()) / (double) itemHeight)  ;
 282                 int treeViewHeight = (int) ceil(f);
 283
 284                                 int scrollPixelsPerLine = itemHeight;
 285                                 int scrollPos = - (itemRect.y / itemHeight);
 286
 287                                 scrolledWindow->SetScrollbars(0, scrollPixelsPerLine, 0, treeViewHeight, 0, scrollPos);
 288
 289                                 // Ensure that when a scrollbar becomes hidden or visible,
 290                                 // the contained window sizes are right.
 291                                 // Problem: this is called too early (?)
 292                                 wxSizeEvent event(scrolledWindow->GetSize(), scrolledWindow->GetId());
 293                                 scrolledWindow->GetEventHandler()->ProcessEvent(event);
 294                         }
 295                 }
 296         }
 297 }
 298
 299
 300 // Calculate the area that contains both rectangles
 301 static wxRect CombineRectangles(const wxRect& rect1, const wxRect& rect2)
 302 {
 303     wxRect rect;
 304
 305     int right1 = rect1.GetRight();
 306     int bottom1 = rect1.GetBottom();
 307     int right2 = rect2.GetRight();
 308     int bottom2 = rect2.GetBottom();
 309
 310     wxPoint topLeft = wxPoint(wxMin(rect1.x, rect2.x), wxMin(rect1.y, rect2.y));
 311     wxPoint bottomRight = wxPoint(wxMax(right1, right2), wxMax(bottom1, bottom2));
 312
 313     rect.x = topLeft.x; rect.y = topLeft.y;
 314     rect.SetRight(bottomRight.x);
 315     rect.SetBottom(bottomRight.y);
 316
 317     return rect;
 318 }
 319
 320
 321 // Calculate the tree overall size so we can set the scrollbar
 322 // correctly
 323 void wxRemotelyScrolledTreeCtrl::CalcTreeSize(wxRect& rect)
 324 {
 325         CalcTreeSize(GetRootItem(), rect);
 326 }
 327
 328 void wxRemotelyScrolledTreeCtrl::CalcTreeSize(const wxTreeItemId& id, wxRect& rect)
 329 {
 330         // More efficient implementation would be to find the last item (but how?)
 331         // Q: is the bounding rect relative to the top of the virtual tree workspace
 332         // or the top of the window? How would we convert?
 333         wxRect itemSize;
 334         if (GetBoundingRect(id, itemSize))
 335         {
 336                 rect = CombineRectangles(rect, itemSize);
 337         }
 338
 339         long cookie;
 340         wxTreeItemId childId = GetFirstChild(id, cookie);
 341         while (childId != 0)
 342         {
 343                 CalcTreeSize(childId, rect);
 344                 childId = GetNextChild(childId, cookie);
 345         }
 346 }
 347
 348 // Find the scrolled window that contains this control
 349 wxScrolledWindow* wxRemotelyScrolledTreeCtrl::GetScrolledWindow() const
 350 {
 351         wxWindow* parent = wxWindow::GetParent();
 352         while (parent)
 353         {
 354                 if (parent->IsKindOf(CLASSINFO(wxScrolledWindow)))
 355                         return (wxScrolledWindow*) parent;
 356                 parent = parent->GetParent();
 357         }
 358         return NULL;
 359 }
 360
 361 void wxRemotelyScrolledTreeCtrl::OnScroll(wxScrollWinEvent& event)
 362 {
 363     int orient = event.GetOrientation();
 364     if (orient == wxHORIZONTAL)
 365     {
 366         event.Skip();
 367         return;
 368     }
 369     wxScrolledWindow* scrollWin = GetScrolledWindow();
 370     if (!scrollWin)
 371         return;
 372
 373     int x, y;
 374     scrollWin->GetViewStart(& x, & y);
 375
 376     ScrollToLine(-1, y);
 377 }
 378
 379 /*
 380  * wxTreeCompanionWindow
 381  *
 382  * A window displaying values associated with tree control items.
 383  */
 384
 385 IMPLEMENT_CLASS(wxTreeCompanionWindow, wxWindow)
 386
 387 BEGIN_EVENT_TABLE(wxTreeCompanionWindow, wxWindow)
 388         EVT_PAINT(wxTreeCompanionWindow::OnPaint)
 389         EVT_SCROLLWIN(wxTreeCompanionWindow::OnScroll)
 390         EVT_TREE_ITEM_EXPANDED(-1, wxTreeCompanionWindow::OnExpand)
 391         EVT_TREE_ITEM_COLLAPSED(-1, wxTreeCompanionWindow::OnExpand)
 392 END_EVENT_TABLE()
 393
 394 wxTreeCompanionWindow::wxTreeCompanionWindow(wxWindow* parent, wxWindowID id,
 395       const wxPoint& pos,
 396       const wxSize& sz,
 397       long style):
 398         wxWindow(parent, id, pos, sz, style)
 399 {
 400         m_treeCtrl = NULL;
 401 }
 402
 403 void wxTreeCompanionWindow::DrawItem(wxDC& dc, wxTreeItemId id, const wxRect& rect)
 404 {
 405         // TEST CODE
 406 #if 1
 407         if (m_treeCtrl)
 408         {
 409                 wxString text = m_treeCtrl->GetItemText(id);
 410                 dc.SetTextForeground(* wxBLACK);
 411                 dc.SetBackgroundMode(wxTRANSPARENT);
 412
 413                 int textW, textH;
 414                 dc.GetTextExtent(text, & textW, & textH);
 415
 416                 int x = 5;
 417                 int y = rect.GetY() + wxMax(0, (rect.GetHeight() - textH) / 2);
 418
 419                 dc.DrawText(text, x, y);
 420         }
 421 #endif
 422 }
 423
 424 void wxTreeCompanionWindow::OnPaint(wxPaintEvent& event)
 425 {
 426         wxPaintDC dc(this);
 427
 428     if (!m_treeCtrl)
 429         return;
 430
 431         wxPen pen(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DLIGHT), 1, wxSOLID);
 432         dc.SetPen(pen);
 433         dc.SetBrush(* wxTRANSPARENT_BRUSH);
 434         wxFont font(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
 435         dc.SetFont(font);
 436
 437     wxSize clientSize = GetClientSize();
 438         wxRect itemRect;
 439         int cy=0;
 440         wxTreeItemId h, lastH;
 441         for(h=m_treeCtrl->GetFirstVisibleItem();h;h=m_treeCtrl->GetNextVisible(h))
 442         {
 443                 if (m_treeCtrl->GetBoundingRect(h, itemRect))
 444                 {
 445                         cy = itemRect.GetTop();
 446                         wxRect drawItemRect(0, cy, clientSize.x, itemRect.GetHeight());
 447
 448                         lastH = h;
 449
 450                         // Draw the actual item
 451                         DrawItem(dc, h, drawItemRect);
 452                         dc.DrawLine(0, cy, clientSize.x, cy);
 453                 }
 454         }
 455         if (lastH.IsOk() && m_treeCtrl->GetBoundingRect(lastH, itemRect))
 456         {
 457                 cy = itemRect.GetBottom();
 458                 dc.DrawLine(0, cy, clientSize.x, cy);
 459         }
 460 }
 461
 462 void wxTreeCompanionWindow::OnScroll(wxScrollWinEvent& event)
 463 {
 464     int orient = event.GetOrientation();
 465     if (orient == wxHORIZONTAL)
 466     {
 467         event.Skip();
 468         return;
 469     }
 470     if (!m_treeCtrl)
 471         return;
 472
 473         // TODO: scroll the window physically instead of just refreshing.
 474         Refresh(TRUE);
 475 }
 476
 477 void wxTreeCompanionWindow::OnExpand(wxTreeEvent& event)
 478 {
 479         // TODO: something more optimized than simply refresh the whole
 480         // window when the tree is expanded/collapsed. Tricky.
 481         Refresh();
 482 }
 483
 484 /*
 485  * wxThinSplitterWindow
 486  */
 487
 488 IMPLEMENT_CLASS(wxThinSplitterWindow, wxSplitterWindow)
 489
 490 BEGIN_EVENT_TABLE(wxThinSplitterWindow, wxSplitterWindow)
 491         EVT_SIZE(wxThinSplitterWindow::OnSize)
 492 END_EVENT_TABLE()
 493
 494 wxThinSplitterWindow::wxThinSplitterWindow(wxWindow* parent, wxWindowID id,
 495       const wxPoint& pos,
 496       const wxSize& sz,
 497       long style):
 498       wxSplitterWindow(parent, id, pos, sz, style)
 499 {
 500 }
 501
 502 void wxThinSplitterWindow::SizeWindows()
 503 {
 504         // The client size may have changed inbetween
 505         // the sizing of the first window and the sizing of
 506         // the second. So repeat SizeWindows.
 507     wxSplitterWindow::SizeWindows();
 508     wxSplitterWindow::SizeWindows();
 509 }
 510
 511 // Tests for x, y over sash
 512 bool wxThinSplitterWindow::SashHitTest(int x, int y, int tolerance)
 513 {
 514         return wxSplitterWindow::SashHitTest(x, y, 4);
 515 }
 516
 517 void wxThinSplitterWindow::DrawSash(wxDC& dc)
 518 {
 519     if ( m_sashPosition == 0 || !m_windowTwo)
 520         return;
 521     if (GetWindowStyle() & wxSP_NOSASH)
 522         return;
 523
 524     int w, h;
 525     GetClientSize(&w, &h);
 526
 527         if ( m_splitMode == wxSPLIT_VERTICAL )
 528         {
 529                 dc.SetPen(* m_facePen);
 530                 dc.SetBrush(* m_faceBrush);
 531                 int h1 = h-1;
 532                 int y1 = 0;
 533                 if ( (GetWindowStyleFlag() & wxSP_BORDER) != wxSP_BORDER && (GetWindowStyleFlag() & wxSP_3DBORDER) != wxSP_3DBORDER )
 534                         h1 += 1; // Not sure why this is necessary...
 535                 if ( (GetWindowStyleFlag() & wxSP_3DBORDER) == wxSP_3DBORDER)
 536                 {
 537                         y1 = 2; h1 -= 3;
 538                 }
 539                 dc.DrawRectangle(m_sashPosition, y1, m_sashSize, h1);
 540         }
 541         else
 542         {
 543                 dc.SetPen(* m_facePen);
 544                 dc.SetBrush(* m_faceBrush);
 545                 int w1 = w-1;
 546                 int x1 = 0;
 547                 if ( (GetWindowStyleFlag() & wxSP_BORDER) != wxSP_BORDER && (GetWindowStyleFlag() & wxSP_3DBORDER) != wxSP_3DBORDER )
 548                         w1 ++;
 549                 if ( (GetWindowStyleFlag() & wxSP_3DBORDER) == wxSP_3DBORDER)
 550                 {
 551                         x1 = 2; w1 -= 3;
 552                 }
 553                 dc.DrawRectangle(x1, m_sashPosition, w1, m_sashSize);
 554         }
 555
 556     dc.SetPen(wxNullPen);
 557     dc.SetBrush(wxNullBrush);
 558 }
 559
 560 void wxThinSplitterWindow::OnSize(wxSizeEvent& event)
 561 {
 562         wxSplitterWindow::OnSize(event);
 563 }
 564
 565 /*
 566  * wxSplitterScrolledWindow
 567  */
 568
 569 IMPLEMENT_CLASS(wxSplitterScrolledWindow, wxScrolledWindow)
 570
 571 BEGIN_EVENT_TABLE(wxSplitterScrolledWindow, wxScrolledWindow)
 572         EVT_SCROLLWIN(wxSplitterScrolledWindow::OnScroll)
 573         EVT_SIZE(wxSplitterScrolledWindow::OnSize)
 574 END_EVENT_TABLE()
 575
 576 wxSplitterScrolledWindow::wxSplitterScrolledWindow(wxWindow* parent, wxWindowID id,
 577       const wxPoint& pos,
 578       const wxSize& sz,
 579       long style):
 580       wxScrolledWindow(parent, id, pos, sz, style)
 581 {
 582 }
 583
 584 void wxSplitterScrolledWindow::OnSize(wxSizeEvent& event)
 585 {
 586         wxSize sz = GetClientSize();
 587         if (GetChildren().First())
 588         {
 589                 ((wxWindow*) GetChildren().First()->Data())->SetSize(0, 0, sz.x, sz.y);
 590         }
 591 }
 592
 593 void wxSplitterScrolledWindow::OnScroll(wxScrollWinEvent& event)
 594 {
 595     // Ensure that events being propagated back up the window hierarchy
 596     // don't cause an infinite loop
 597     static bool inOnScroll = FALSE;
 598     if (inOnScroll)
 599     {
 600         event.Skip();
 601         return;
 602     }
 603     inOnScroll = TRUE;
 604
 605     int orient = event.GetOrientation();
 606
 607     int nScrollInc = CalcScrollInc(event);
 608     if (nScrollInc == 0)
 609     {
 610         inOnScroll = FALSE;
 611         return;
 612     }
 613
 614     if (orient == wxHORIZONTAL)
 615     {
 616         inOnScroll = FALSE;
 617         event.Skip();
 618         return;
 619 #if 0
 620         int newPos = m_xScrollPosition + nScrollInc;
 621         SetScrollPos(wxHORIZONTAL, newPos, TRUE );
 622 #endif
 623     }
 624     else
 625     {
 626         int newPos = m_yScrollPosition + nScrollInc;
 627         SetScrollPos(wxVERTICAL, newPos, TRUE );
 628     }
 629
 630     if (orient == wxHORIZONTAL)
 631     {
 632         m_xScrollPosition += nScrollInc;
 633     }
 634     else
 635     {
 636         m_yScrollPosition += nScrollInc;
 637     }
 638
 639     // Find targets in splitter window and send the event to them
 640     wxNode* node = GetChildren().First();
 641     while (node)
 642     {
 643         wxWindow* child = (wxWindow*) node->Data();
 644         if (child->IsKindOf(CLASSINFO(wxSplitterWindow)))
 645         {
 646             wxSplitterWindow* splitter = (wxSplitterWindow*) child;
 647             if (splitter->GetWindow1())
 648                 splitter->GetWindow1()->ProcessEvent(event);
 649             if (splitter->GetWindow2())
 650                 splitter->GetWindow2()->ProcessEvent(event);
 651             break;
 652         }
 653         node = node->Next();
 654     }
 655
 656 #ifdef __WXMAC__
 657     m_targetWindow->MacUpdateImmediately() ;
 658 #endif
 659
 660     inOnScroll = FALSE;
 661 }
 662