tools/src/tools/configtool/standalone/wxwin/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 //
  12 // This program is part of the eCos host tools.
  13 //
  14 // This program is free software; you can redistribute it and/or modify it
  15 // under the terms of the GNU General Public License as published by the Free
  16 // Software Foundation; either version 2 of the License, or (at your option)
  17 // any later version.
  18 //
  19 // This program is distributed in the hope that it will be useful, but WITHOUT
  20 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  21 // FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  22 // more details.
  23 //
  24 // You should have received a copy of the GNU General Public License along with
  25 // this program; if not, write to the Free Software Foundation, Inc.,
  26 // 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  27 //
  28 /////////////////////////////////////////////////////////////////////////////
  29
  30 // ============================================================================
  31 // declarations
  32 // ============================================================================
  33
  34 // ----------------------------------------------------------------------------
  35 // headers
  36 // ----------------------------------------------------------------------------
  37 #ifdef __GNUG__
  38 #pragma implementation "splittree.h"
  39 #endif
  40
  41 // For compilers that support precompilation, includes "wx/wx.h".
  42 #include "ecpch.h"
  43
  44 #ifdef __WXMSW__
  45 #include "wx/msw/private.h"
  46 #endif
  47
  48 #ifdef __BORLANDC__
  49 #pragma hdrstop
  50 #endif
  51
  52 #include "wx/generic/treectlg.h"
  53
  54 #include "splittree.h"
  55 #include <math.h>
  56
  57 /*
  58 * wxRemotelyScrolledTreeCtrl
  59 */
  60
  61 #if USE_GENERIC_TREECTRL
  62 IMPLEMENT_CLASS(wxRemotelyScrolledTreeCtrl, wxGenericTreeCtrl)
  63 #else
  64 IMPLEMENT_CLASS(wxRemotelyScrolledTreeCtrl, wxTreeCtrl)
  65 #endif
  66
  67 #if USE_GENERIC_TREECTRL
  68 BEGIN_EVENT_TABLE(wxRemotelyScrolledTreeCtrl, wxGenericTreeCtrl)
  69 #else
  70 BEGIN_EVENT_TABLE(wxRemotelyScrolledTreeCtrl, wxTreeCtrl)
  71 #endif
  72 EVT_SIZE(wxRemotelyScrolledTreeCtrl::OnSize)
  73 EVT_TREE_ITEM_EXPANDED(-1, wxRemotelyScrolledTreeCtrl::OnExpand)
  74 EVT_TREE_ITEM_COLLAPSED(-1, wxRemotelyScrolledTreeCtrl::OnExpand)
  75 EVT_SCROLLWIN(wxRemotelyScrolledTreeCtrl::OnScroll)
  76 END_EVENT_TABLE()
  77
  78 wxRemotelyScrolledTreeCtrl::wxRemotelyScrolledTreeCtrl(wxWindow* parent, wxWindowID id, const wxPoint& pt,
  79                                                        const wxSize& sz, long style):
  80     wxTreeCtrl(parent, id, pt, sz, style
  81 #if wxVERSON_NUMBER > 2301
  82                & ~wxTR_ROW_LINES
  83 #endif
  84                )
  85 {
  86     m_companionWindow = NULL;
  87 }
  88
  89 wxRemotelyScrolledTreeCtrl::~wxRemotelyScrolledTreeCtrl()
  90 {
  91 }
  92
  93 void wxRemotelyScrolledTreeCtrl::HideVScrollbar()
  94 {
  95 #ifdef __WXMSW__
  96     if (!IsKindOf(CLASSINFO(wxGenericTreeCtrl)))
  97     {
  98         ::ShowScrollBar((HWND) GetHWND(), SB_VERT, FALSE);
  99     }
 100     else
 101 #endif
 102     {
 103         // Implicit in overriding SetScrollbars
 104     }
 105 }
 106
 107 // Number of pixels per user unit (0 or -1 for no scrollbar)
 108 // Length of virtual canvas in user units
 109 // Length of page in user units
 110 void wxRemotelyScrolledTreeCtrl::SetScrollbars(int pixelsPerUnitX, int pixelsPerUnitY,
 111                                                int noUnitsX, int noUnitsY,
 112                                                int xPos, int yPos,
 113                                                bool noRefresh)
 114 {
 115     if (IsKindOf(CLASSINFO(wxGenericTreeCtrl)))
 116     {
 117         wxGenericTreeCtrl* win = (wxGenericTreeCtrl*) this;
 118         win->wxGenericTreeCtrl::SetScrollbars(pixelsPerUnitX, 0, noUnitsX, 0, xPos, 0, noRefresh);
 119
 120         ecScrolledWindow* scrolledWindow = GetScrolledWindow();
 121         if (scrolledWindow)
 122         {
 123             scrolledWindow->SetScrollbars(0, pixelsPerUnitY, 0, noUnitsY, 0, yPos, noRefresh);
 124         }
 125     }
 126 }
 127
 128 // In case we're using the generic tree control.
 129 int wxRemotelyScrolledTreeCtrl::GetScrollPos(int orient) const
 130 {
 131     ecScrolledWindow* scrolledWindow = GetScrolledWindow();
 132
 133     if (IsKindOf(CLASSINFO(wxGenericTreeCtrl)))
 134     {
 135         wxGenericTreeCtrl* win = (wxGenericTreeCtrl*) this;
 136
 137         if (orient == wxHORIZONTAL)
 138             return win->wxGenericTreeCtrl::GetScrollPos(orient);
 139         else
 140         {
 141             return scrolledWindow->GetScrollPos(orient);
 142         }
 143     }
 144     return 0;
 145 }
 146
 147
 148 // In case we're using the generic tree control.
 149 // Get the view start
 150 void wxRemotelyScrolledTreeCtrl::GetViewStart(int *x, int *y) const
 151 {
 152     ecScrolledWindow* scrolledWindow = GetScrolledWindow();
 153
 154     if (IsKindOf(CLASSINFO(wxGenericTreeCtrl)))
 155     {
 156
 157         wxGenericTreeCtrl* win = (wxGenericTreeCtrl*) this;
 158         int x1, y1, x2, y2;
 159         win->wxGenericTreeCtrl::GetViewStart(& x1, & y1);
 160         * x = x1; * y = y1;
 161         if (!scrolledWindow)
 162             return;
 163
 164         scrolledWindow->GetViewStart(& x2, & y2);
 165         * y = y2;
 166     }
 167     else
 168     {
 169         // x is wrong since the horizontal scrollbar is controlled by the
 170         // tree control, but we probably don't need it.
 171         scrolledWindow->GetViewStart(x, y);
 172     }
 173 }
 174
 175 // In case we're using the generic tree control.
 176 void wxRemotelyScrolledTreeCtrl::PrepareDC(wxDC& dc)
 177 {
 178     if (IsKindOf(CLASSINFO(wxGenericTreeCtrl)))
 179     {
 180         ecScrolledWindow* scrolledWindow = GetScrolledWindow();
 181
 182         wxGenericTreeCtrl* win = (wxGenericTreeCtrl*) this;
 183
 184         int startX, startY;
 185         GetViewStart(& startX, & startY);
 186
 187         int xppu1, yppu1, xppu2, yppu2;
 188         win->wxGenericTreeCtrl::GetScrollPixelsPerUnit(& xppu1, & yppu1);
 189         scrolledWindow->GetScrollPixelsPerUnit(& xppu2, & yppu2);
 190
 191         dc.SetDeviceOrigin( -startX * xppu1, -startY * yppu2 );
 192         // dc.SetUserScale( win->GetScaleX(), win->GetScaleY() );
 193     }
 194 }
 195
 196 // Scroll to the given line (in scroll units where each unit is
 197 // the height of an item)
 198 void wxRemotelyScrolledTreeCtrl::ScrollToLine(int posHoriz, int posVert)
 199 {
 200 #ifdef __WXMSW__
 201     if (!IsKindOf(CLASSINFO(wxGenericTreeCtrl)))
 202     {
 203         UINT sbCode = SB_THUMBPOSITION;
 204         HWND vertScrollBar = 0;
 205         MSWDefWindowProc((WXUINT) WM_VSCROLL, MAKELONG(sbCode, posVert), (WXHWND) vertScrollBar);
 206     }
 207     else
 208 #endif
 209     {
 210         wxGenericTreeCtrl* win = (wxGenericTreeCtrl*) this;
 211         win->Refresh();
 212         /* Doesn't work yet because scrolling is ignored by Scroll
 213         int xppu, yppu;
 214         wxScrolledWindow* scrolledWindow = GetScrolledWindow();
 215         if (scrolledWindow)
 216         {
 217         scrolledWindow->GetScrollPixelsPerUnit(& xppu, & yppu);
 218         win->Scroll(-1, posVert*yppu);
 219         }
 220         */
 221     }
 222 }
 223
 224 void wxRemotelyScrolledTreeCtrl::OnSize(wxSizeEvent& event)
 225 {
 226     HideVScrollbar();
 227     AdjustRemoteScrollbars();
 228     event.Skip();
 229 }
 230
 231 void wxRemotelyScrolledTreeCtrl::OnExpand(wxTreeEvent& event)
 232 {
 233     AdjustRemoteScrollbars();
 234     event.Skip();
 235
 236     // If we don't have this, we get some bits of lines still remaining
 237     if (event.GetEventType() == wxEVT_COMMAND_TREE_ITEM_COLLAPSED)
 238         Refresh();
 239
 240     // Pass on the event
 241     if (m_companionWindow)
 242         m_companionWindow->GetEventHandler()->ProcessEvent(event);
 243 }
 244
 245 // Adjust the containing wxScrolledWindow's scrollbars appropriately
 246 void wxRemotelyScrolledTreeCtrl::AdjustRemoteScrollbars()
 247 {
 248     if (IsKindOf(CLASSINFO(wxGenericTreeCtrl)))
 249     {
 250         // This is for the generic tree control.
 251         // It calls SetScrollbars which has been overridden
 252         // to adjust the parent scrolled window vertical
 253         // scrollbar.
 254         ((wxGenericTreeCtrl*) this)->AdjustMyScrollbars();
 255         return;
 256     }
 257     else
 258     {
 259         // This is for the wxMSW tree control
 260         ecScrolledWindow* scrolledWindow = GetScrolledWindow();
 261         if (scrolledWindow)
 262         {
 263             wxRect itemRect;
 264             if (GetBoundingRect(GetRootItem(), itemRect))
 265             {
 266                 // Actually, the real height seems to be 1 less than reported
 267                 // (e.g. 16 instead of 16)
 268                 int itemHeight = itemRect.GetHeight() - 1;
 269
 270                 int w, h;
 271                 GetClientSize(&w, &h);
 272
 273                 wxRect rect(0, 0, 0, 0);
 274                 CalcTreeSize(rect);
 275
 276                 double f = ((double) (rect.GetHeight()) / (double) itemHeight)  ;
 277                 int treeViewHeight = (int) ceil(f);
 278
 279                 int scrollPixelsPerLine = itemHeight;
 280                 int scrollPos = - (itemRect.y / itemHeight);
 281
 282                 scrolledWindow->SetScrollbars(0, scrollPixelsPerLine, 0, treeViewHeight, 0, scrollPos);
 283
 284                 // Ensure that when a scrollbar becomes hidden or visible,
 285                 // the contained window sizes are right.
 286                 // Problem: this is called too early (?)
 287                 wxSizeEvent event(scrolledWindow->GetSize(), scrolledWindow->GetId());
 288                 scrolledWindow->GetEventHandler()->ProcessEvent(event);
 289             }
 290         }
 291     }
 292 }
 293
 294
 295 // Calculate the area that contains both rectangles
 296 static wxRect CombineRectangles(const wxRect& rect1, const wxRect& rect2)
 297 {
 298     wxRect rect;
 299
 300     int right1 = rect1.GetRight();
 301     int bottom1 = rect1.GetBottom();
 302     int right2 = rect2.GetRight();
 303     int bottom2 = rect2.GetBottom();
 304
 305     wxPoint topLeft = wxPoint(wxMin(rect1.x, rect2.x), wxMin(rect1.y, rect2.y));
 306     wxPoint bottomRight = wxPoint(wxMax(right1, right2), wxMax(bottom1, bottom2));
 307
 308     rect.x = topLeft.x; rect.y = topLeft.y;
 309     rect.SetRight(bottomRight.x);
 310     rect.SetBottom(bottomRight.y);
 311
 312     return rect;
 313 }
 314
 315
 316 // Calculate the tree overall size so we can set the scrollbar
 317 // correctly
 318
 319 // static int g_count = 0;
 320
 321 void wxRemotelyScrolledTreeCtrl::CalcTreeSize(wxRect& rect)
 322 {
 323     //    g_count = 0;
 324     CalcTreeSize(GetRootItem(), rect);
 325 }
 326
 327 void wxRemotelyScrolledTreeCtrl::CalcTreeSize(const wxTreeItemId& id, wxRect& rect)
 328 {
 329     // More efficient implementation would be to find the last item (but how?)
 330     // Q: is the bounding rect relative to the top of the virtual tree workspace
 331     // or the top of the window? How would we convert?
 332     wxRect itemSize;
 333     if (GetBoundingRect(id, itemSize))
 334     {
 335         rect = CombineRectangles(rect, itemSize);
 336     }
 337
 338     long cookie;
 339     wxTreeItemId childId = GetFirstChild(id, cookie);
 340     while (childId != 0)
 341     {
 342         CalcTreeSize(childId, rect);
 343         childId = GetNextChild(childId, cookie);
 344     }
 345 }
 346
 347 // Find the scrolled window that contains this control
 348 ecScrolledWindow* wxRemotelyScrolledTreeCtrl::GetScrolledWindow() const
 349 {
 350     wxWindow* parent = wxWindow::GetParent();
 351     while (parent)
 352     {
 353         if (parent->IsKindOf(CLASSINFO(ecScrolledWindow)))
 354             return (ecScrolledWindow*) parent;
 355         parent = parent->GetParent();
 356     }
 357     return NULL;
 358 }
 359
 360 void wxRemotelyScrolledTreeCtrl::OnScroll(wxScrollWinEvent& event)
 361 {
 362     int orient = event.GetOrientation();
 363     if (orient == wxHORIZONTAL)
 364     {
 365         event.Skip();
 366         return;
 367     }
 368     ecScrolledWindow* scrollWin = GetScrolledWindow();
 369     if (!scrollWin)
 370         return;
 371
 372     int x, y;
 373     scrollWin->GetViewStart(& x, & y);
 374
 375     ScrollToLine(-1, y);
 376 }
 377
 378 /*
 379 * wxTreeCompanionWindow
 380 *
 381 * A window displaying values associated with tree control items.
 382 */
 383
 384 IMPLEMENT_CLASS(wxTreeCompanionWindow, wxWindow)
 385
 386 BEGIN_EVENT_TABLE(wxTreeCompanionWindow, wxWindow)
 387 EVT_PAINT(wxTreeCompanionWindow::OnPaint)
 388 EVT_SCROLLWIN(wxTreeCompanionWindow::OnScroll)
 389 EVT_TREE_ITEM_EXPANDED(-1, wxTreeCompanionWindow::OnExpand)
 390 EVT_TREE_ITEM_COLLAPSED(-1, wxTreeCompanionWindow::OnExpand)
 391 END_EVENT_TABLE()
 392
 393 wxTreeCompanionWindow::wxTreeCompanionWindow(wxWindow* parent, wxWindowID id,
 394                                              const wxPoint& pos,
 395                                              const wxSize& sz,
 396                                              long style):
 397 wxWindow(parent, id, pos, sz, style)
 398 {
 399     m_treeCtrl = NULL;
 400 }
 401
 402 void wxTreeCompanionWindow::DrawItem(wxDC& dc, wxTreeItemId id, const wxRect& rect)
 403 {
 404     if (m_treeCtrl)
 405     {
 406         wxString text = m_treeCtrl->GetItemText(id);
 407         dc.SetTextForeground(* wxBLACK);
 408         dc.SetBackgroundMode(wxTRANSPARENT);
 409
 410         int textW, textH;
 411         dc.GetTextExtent(text, & textW, & textH);
 412
 413         int x = 5;
 414         int y = rect.GetY() + wxMax(0, (rect.GetHeight() - textH) / 2);
 415
 416         dc.DrawText(text, x, y);
 417     }
 418 }
 419
 420 void wxTreeCompanionWindow::OnPaint(wxPaintEvent& event)
 421 {
 422     wxPaintDC dc(this);
 423
 424     if (!m_treeCtrl)
 425         return;
 426
 427     wxPen pen(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DLIGHT), 1, wxSOLID);
 428     dc.SetPen(pen);
 429     dc.SetBrush(* wxTRANSPARENT_BRUSH);
 430     wxFont font(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
 431     dc.SetFont(font);
 432
 433     wxSize clientSize = GetClientSize();
 434     wxRect itemRect;
 435     int cy=0;
 436     wxTreeItemId h, lastH;
 437     for(h=m_treeCtrl->GetFirstVisibleItem();h;h=m_treeCtrl->GetNextVisible(h))
 438     {
 439         if (m_treeCtrl->GetBoundingRect(h, itemRect))
 440         {
 441             cy = itemRect.GetTop();
 442             wxRect drawItemRect(0, cy, clientSize.x, itemRect.GetHeight());
 443
 444             lastH = h;
 445
 446             // Draw the actual item
 447             DrawItem(dc, h, drawItemRect);
 448             dc.DrawLine(0, cy, clientSize.x, cy);
 449         }
 450     }
 451     if (lastH.IsOk() && m_treeCtrl->GetBoundingRect(lastH, itemRect))
 452     {
 453         cy = itemRect.GetBottom();
 454         dc.DrawLine(0, cy, clientSize.x, cy);
 455     }
 456 }
 457
 458 void wxTreeCompanionWindow::OnScroll(wxScrollWinEvent& event)
 459 {
 460     int orient = event.GetOrientation();
 461     if (orient == wxHORIZONTAL)
 462     {
 463         event.Skip();
 464         return;
 465     }
 466     if (!m_treeCtrl)
 467         return;
 468
 469     // TODO: scroll the window physically instead of just refreshing.
 470     Refresh(TRUE);
 471 }
 472
 473 void wxTreeCompanionWindow::OnExpand(wxTreeEvent& event)
 474 {
 475     // TODO: something more optimized than simply refresh the whole
 476     // window when the tree is expanded/collapsed. Tricky.
 477     Refresh();
 478 }
 479
 480 /*
 481 * wxThinSplitterWindow
 482 */
 483
 484 IMPLEMENT_CLASS(wxThinSplitterWindow, wxSplitterWindow)
 485
 486 BEGIN_EVENT_TABLE(wxThinSplitterWindow, wxSplitterWindow)
 487 EVT_SIZE(wxThinSplitterWindow::OnSize)
 488 // Not in older versions of wxWindows, unfortunately
 489 #if 0
 490 EVT_SPLITTER_DOUBLECLICKED(-1, wxThinSplitterWindow::OnDoubleClickSash)
 491 #endif
 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, ecScrolledWindow)
 570
 571 BEGIN_EVENT_TABLE(wxSplitterScrolledWindow, ecScrolledWindow)
 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   ecScrolledWindow(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