src/generic/splitter.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        splitter.cpp
   3 // Purpose:     wxSplitterWindow implementation
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13     #pragma implementation "splitter.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20     #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24     #include "wx/wx.h"
  25 #endif
  26
  27 #include <math.h>
  28 #include <stdlib.h>
  29
  30 #include "wx/string.h"
  31 #include "wx/splitter.h"
  32 #include "wx/dcscreen.h"
  33
  34 #if !USE_SHARED_LIBRARY
  35 IMPLEMENT_DYNAMIC_CLASS(wxSplitterWindow, wxWindow)
  36
  37 BEGIN_EVENT_TABLE(wxSplitterWindow, wxWindow)
  38     EVT_PAINT(wxSplitterWindow::OnPaint)
  39     EVT_SIZE(wxSplitterWindow::OnSize)
  40     EVT_MOUSE_EVENTS(wxSplitterWindow::OnMouseEvent)
  41 END_EVENT_TABLE()
  42 #endif
  43
  44 wxSplitterWindow::wxSplitterWindow()
  45 {
  46     m_splitMode = wxSPLIT_VERTICAL;
  47     m_windowOne = (wxWindow *) NULL;
  48     m_windowTwo = (wxWindow *) NULL;
  49     m_dragMode = wxSPLIT_DRAG_NONE;
  50     m_oldX = 0;
  51     m_oldY = 0;
  52     m_firstX = 0;
  53     m_firstY = 0;
  54     m_sashSize = 7;
  55     m_borderSize = 2;
  56     m_sashPosition = 0;
  57     m_sashCursorWE = (wxCursor *) NULL;
  58     m_sashCursorNS = (wxCursor *) NULL;
  59     m_sashTrackerPen = (wxPen *) NULL;
  60     m_lightShadowPen = (wxPen *) NULL;
  61     m_mediumShadowPen = (wxPen *) NULL;
  62     m_darkShadowPen = (wxPen *) NULL;
  63     m_faceBrush = (wxBrush *) NULL;
  64     m_facePen = (wxPen *) NULL;
  65     m_hilightPen = (wxPen *) NULL;
  66     m_minimumPaneSize = 0;
  67 }
  68
  69 wxSplitterWindow::wxSplitterWindow(wxWindow *parent, wxWindowID id,
  70                                    const wxPoint& pos,
  71                                    const wxSize& size,
  72                                    long style,
  73                                    const wxString& name)
  74                 : wxWindow(parent, id, pos, size, style, name)
  75 {
  76     m_splitMode = wxSPLIT_VERTICAL;
  77     m_windowOne = (wxWindow *) NULL;
  78     m_windowTwo = (wxWindow *) NULL;
  79     m_dragMode = wxSPLIT_DRAG_NONE;
  80     m_oldX = 0;
  81     m_oldY = 0;
  82     m_firstX = 0;
  83     m_firstY = 0;
  84     m_sashSize = 7;
  85     m_borderSize = 2;
  86     m_sashPosition = 0;
  87     m_minimumPaneSize = 0;
  88     m_sashCursorWE = new wxCursor(wxCURSOR_SIZEWE);
  89     m_sashCursorNS = new wxCursor(wxCURSOR_SIZENS);
  90     m_sashTrackerPen = new wxPen(*wxBLACK, 2, wxSOLID);
  91     m_lightShadowPen = (wxPen *) NULL;
  92     m_mediumShadowPen = (wxPen *) NULL;
  93     m_darkShadowPen = (wxPen *) NULL;
  94     m_faceBrush = (wxBrush *) NULL;
  95     m_facePen = (wxPen *) NULL;
  96     m_hilightPen = (wxPen *) NULL;
  97
  98     if ( style & wxSP_3D )
  99     {
 100         m_borderSize = 2;
 101         m_sashSize = 7;
 102     }
 103     else if ( style & wxSP_BORDER )
 104     {
 105         m_borderSize = 1;
 106         m_sashSize = 3;
 107     }
 108     else
 109     {
 110         m_borderSize = 0;
 111         m_sashSize = 3;
 112     }
 113
 114     // Eventually, we'll respond to colour change messages
 115     InitColours();
 116
 117     // For debugging purposes, to see the background.
 118 //    SetBackground(wxBLUE_BRUSH);
 119 }
 120
 121 wxSplitterWindow::~wxSplitterWindow()
 122 {
 123     delete m_sashCursorWE;
 124     delete m_sashCursorNS;
 125     delete m_sashTrackerPen;
 126     delete m_lightShadowPen;
 127     delete m_darkShadowPen;
 128     delete m_mediumShadowPen;
 129     delete m_hilightPen;
 130     delete m_facePen;
 131     delete m_faceBrush;
 132 }
 133
 134 void wxSplitterWindow::OnPaint(wxPaintEvent& WXUNUSED(event))
 135 {
 136     wxPaintDC dc(this);
 137
 138     if ( m_borderSize > 0 )
 139         DrawBorders(dc);
 140     DrawSash(dc);
 141 }
 142
 143 void wxSplitterWindow::OnMouseEvent(wxMouseEvent& event)
 144 {
 145     long x, y;
 146     event.Position(&x, &y);
 147
 148     // reset the cursor
 149 #ifdef __WXMOTIF__
 150     SetCursor(* wxSTANDARD_CURSOR);
 151 #endif
 152 #ifdef __WXMSW__
 153     SetCursor(wxCursor());
 154 #endif
 155
 156     // under wxGTK the method above causes the mouse
 157     // to flicker so we set the standard cursor only
 158     // when leaving the window and when moving over
 159     // non-sash parts of the window. this should work
 160     // on the other platforms as well, but who knows.
 161 #ifdef __WXGTK__
 162     if (event.Leaving())
 163         SetCursor(* wxSTANDARD_CURSOR);
 164 #endif
 165
 166     if (event.LeftDown())
 167     {
 168         if ( SashHitTest(x, y) )
 169         {
 170             CaptureMouse();
 171
 172             m_dragMode = wxSPLIT_DRAG_DRAGGING;
 173
 174             DrawSashTracker(x, y);
 175             m_oldX = x;
 176             m_oldY = y;
 177             return;
 178         }
 179     }
 180     else if (event.LeftUp() && m_dragMode == wxSPLIT_DRAG_DRAGGING)
 181     {
 182         // We can stop dragging now and see what we've got.
 183         m_dragMode = wxSPLIT_DRAG_NONE;
 184         ReleaseMouse();
 185
 186         // Erase old tracker
 187         DrawSashTracker(m_oldX, m_oldY);
 188
 189         int w, h;
 190         GetClientSize(&w, &h);
 191         if ( m_splitMode == wxSPLIT_VERTICAL )
 192         {
 193             if ( !OnSashPositionChange(x) )
 194                 return;
 195
 196             if ( x <= 4 )
 197             {
 198                 // We remove the first window from the view
 199                 wxWindow *removedWindow = m_windowOne;
 200                 m_windowOne = m_windowTwo;
 201                 m_windowTwo = (wxWindow *) NULL;
 202
 203                 OnUnsplit(removedWindow);
 204                 m_sashPosition = 0;
 205             }
 206             else if ( x >= (w - 4) )
 207             {
 208                 // We remove the second window from the view
 209                 wxWindow *removedWindow = m_windowTwo;
 210                 m_windowTwo = (wxWindow *) NULL;
 211                 OnUnsplit(removedWindow);
 212                 m_sashPosition = 0;
 213             }
 214             else
 215             {
 216                 m_sashPosition = x;
 217             }
 218         }
 219         else  // m_splitMode == wxSPLIT_VERTICAL
 220         {
 221             if ( !OnSashPositionChange(y) )
 222                 return;
 223
 224             if ( y <= 4 )
 225             {
 226                 // We remove the first window from the view
 227                 wxWindow *removedWindow = m_windowOne;
 228                 m_windowOne = m_windowTwo;
 229                 m_windowTwo = (wxWindow *) NULL;
 230
 231                 OnUnsplit(removedWindow);
 232                 m_sashPosition = 0;
 233             }
 234             else if ( y >= (h - 4) )
 235             {
 236                 // We remove the second window from the view
 237                 wxWindow *removedWindow = m_windowTwo;
 238                 m_windowTwo = (wxWindow *) NULL;
 239                 OnUnsplit(removedWindow);
 240                 m_sashPosition = 0;
 241             }
 242             else
 243             {
 244                 m_sashPosition = y;
 245             }
 246         } // m_splitMode == wxSPLIT_VERTICAL
 247         SizeWindows();
 248     }  // left up && dragging
 249     else if (event.Moving() && !event.Dragging())
 250     {
 251         // Just change the cursor if required
 252         if ( SashHitTest(x, y) )
 253         {
 254                 if ( m_splitMode == wxSPLIT_VERTICAL )
 255                 {
 256                     SetCursor(*m_sashCursorWE);
 257                 }
 258                 else
 259                 {
 260                     SetCursor(*m_sashCursorNS);
 261                 }
 262         }
 263 #ifdef __WXGTK__
 264         else
 265         {
 266             // where else do we unset the cursor?
 267             SetCursor(* wxSTANDARD_CURSOR);
 268         }
 269 #endif
 270     }
 271     else if (event.Dragging() && (m_dragMode == wxSPLIT_DRAG_DRAGGING))
 272     {
 273         // Erase old tracker
 274         DrawSashTracker(m_oldX, m_oldY);
 275
 276         // Draw new one
 277         DrawSashTracker(x, y);
 278
 279         m_oldX = x;
 280         m_oldY = y;
 281     }
 282     else if ( event.LeftDClick() )
 283     {
 284         OnDoubleClickSash(x, y);
 285     }
 286 }
 287
 288 void wxSplitterWindow::OnSize(wxSizeEvent& WXUNUSED(event))
 289 {
 290     int cw, ch;
 291     GetClientSize( &cw, &ch );
 292     if ( m_windowTwo )
 293     {
 294         if ( m_splitMode == wxSPLIT_VERTICAL )
 295         {
 296             if ( m_sashPosition >= (cw - 5) )
 297                 m_sashPosition = wxMax(10, cw - 40);
 298         }
 299         if ( m_splitMode == wxSPLIT_HORIZONTAL )
 300         {
 301             if ( m_sashPosition >= (ch - 5) )
 302                 m_sashPosition = wxMax(10, ch - 40);
 303         }
 304     }
 305     SizeWindows();
 306 }
 307
 308 bool wxSplitterWindow::SashHitTest(int x, int y, int tolerance)
 309 {
 310     if ( m_windowTwo == NULL || m_sashPosition == 0)
 311         return FALSE; // No sash
 312
 313     if ( m_splitMode == wxSPLIT_VERTICAL )
 314     {
 315         if ( (x >= m_sashPosition - tolerance) && (x <= m_sashPosition + m_sashSize + tolerance) )
 316             return TRUE;
 317         else
 318             return FALSE;
 319     }
 320     else
 321     {
 322         if ( (y >= (m_sashPosition- tolerance)) && (y <= (m_sashPosition + m_sashSize + tolerance)) )
 323             return TRUE;
 324         else
 325             return FALSE;
 326     }
 327
 328     return FALSE;
 329 }
 330
 331 // Draw 3D effect borders
 332 void wxSplitterWindow::DrawBorders(wxDC& dc)
 333 {
 334     int w, h;
 335     GetClientSize(&w, &h);
 336
 337     if ( GetWindowStyleFlag() & wxSP_3D )
 338     {
 339         dc.SetPen(*m_mediumShadowPen);
 340         dc.DrawLine(0, 0, w-1, 0);
 341         dc.DrawLine(0, 0, 0, h - 1);
 342
 343         dc.SetPen(*m_darkShadowPen);
 344         dc.DrawLine(1, 1, w-2, 1);
 345         dc.DrawLine(1, 1, 1, h-2);
 346
 347         dc.SetPen(*m_hilightPen);
 348         dc.DrawLine(0, h-1, w-1, h-1);
 349         dc.DrawLine(w-1, 0, w-1, h); // Surely the maximum y pos. should be h - 1.
 350                                      /// Anyway, h is required for MSW.
 351
 352         dc.SetPen(*m_lightShadowPen);
 353         dc.DrawLine(w-2, 1, w-2, h-2); // Right hand side
 354         dc.DrawLine(1, h-2, w-1, h-2);     // Bottom
 355     }
 356     else if ( GetWindowStyleFlag() & wxSP_BORDER )
 357     {
 358         dc.SetBrush(*wxTRANSPARENT_BRUSH);
 359         dc.SetPen(*wxBLACK_PEN);
 360         dc.DrawRectangle(0, 0, w-1, h-1);
 361     }
 362
 363     dc.SetPen(wxNullPen);
 364     dc.SetBrush(wxNullBrush);
 365 }
 366
 367 // Draw the sash
 368 void wxSplitterWindow::DrawSash(wxDC& dc)
 369 {
 370     if ( m_sashPosition == 0 || !m_windowTwo)
 371         return;
 372
 373     int w, h;
 374     GetClientSize(&w, &h);
 375
 376     if ( GetWindowStyleFlag() & wxSP_3D )
 377     {
 378         if ( m_splitMode == wxSPLIT_VERTICAL )
 379         {
 380             dc.SetPen(*m_facePen);
 381             dc.SetBrush(*m_faceBrush);
 382             dc.DrawRectangle(m_sashPosition + 2, 0, m_sashSize - 4, h);
 383
 384             dc.SetBrush(*wxTRANSPARENT_BRUSH);
 385
 386             dc.SetPen(*m_lightShadowPen);
 387             dc.DrawLine(m_sashPosition, 1, m_sashPosition, h-2);
 388
 389             dc.SetPen(*m_hilightPen);
 390             dc.DrawLine(m_sashPosition+1, 0, m_sashPosition+1, h);
 391
 392             dc.SetPen(*m_mediumShadowPen);
 393             dc.DrawLine(m_sashPosition+m_sashSize-2, 1, m_sashPosition+m_sashSize-2, h-1);
 394
 395             dc.SetPen(*m_darkShadowPen);
 396             dc.DrawLine(m_sashPosition+m_sashSize-1, 2, m_sashPosition+m_sashSize-1, h-2);
 397         }
 398         else
 399         {
 400             dc.SetPen(*m_facePen);
 401             dc.SetBrush(*m_faceBrush);
 402             dc.DrawRectangle(0, m_sashPosition + 2, w, m_sashSize - 4);
 403
 404             dc.SetBrush(*wxTRANSPARENT_BRUSH);
 405
 406             dc.SetPen(*m_lightShadowPen);
 407             dc.DrawLine(1, m_sashPosition, w-2, m_sashPosition);
 408
 409             dc.SetPen(*m_hilightPen);
 410             dc.DrawLine(0, m_sashPosition+1, w, m_sashPosition+1);
 411
 412             dc.SetPen(*m_mediumShadowPen);
 413             dc.DrawLine(1, m_sashPosition+m_sashSize-2, w-1, m_sashPosition+m_sashSize-2);
 414
 415             dc.SetPen(*m_darkShadowPen);
 416             dc.DrawLine(2, m_sashPosition+m_sashSize-1, w-2, m_sashPosition+m_sashSize-1);
 417         }
 418     }
 419     else
 420     {
 421         if ( m_splitMode == wxSPLIT_VERTICAL )
 422         {
 423             dc.SetPen(*wxBLACK_PEN);
 424             dc.SetBrush(*wxBLACK_BRUSH);
 425             int h1 = h-1;
 426             if ( (GetWindowStyleFlag() & wxSP_BORDER) != wxSP_BORDER )
 427                 h1 += 1; // Not sure why this is necessary...
 428             dc.DrawRectangle(m_sashPosition, 0, m_sashSize, h1);
 429         }
 430         else
 431         {
 432             dc.SetPen(*wxBLACK_PEN);
 433             dc.SetBrush(*wxBLACK_BRUSH);
 434             int w1 = w-1;
 435             if ( (GetWindowStyleFlag() & wxSP_BORDER) != wxSP_BORDER )
 436                 w1 ++;
 437
 438             dc.DrawRectangle(0, m_sashPosition, w1, m_sashSize);
 439         }
 440
 441     }
 442
 443     dc.SetPen(wxNullPen);
 444     dc.SetBrush(wxNullBrush);
 445 }
 446
 447 // Draw the sash tracker (for whilst moving the sash)
 448 void wxSplitterWindow::DrawSashTracker(int x, int y)
 449 {
 450     int w, h;
 451     GetClientSize(&w, &h);
 452
 453     wxScreenDC screenDC;
 454     int x1, y1;
 455     int x2, y2;
 456
 457     if ( m_splitMode == wxSPLIT_VERTICAL )
 458     {
 459         x1 = x; y1 = 2;
 460         x2 = x; y2 = h-2;
 461
 462         if ( x1 > w )
 463         {
 464             x1 = w; x2 = w;
 465         }
 466         else if ( x1 < 0 )
 467         {
 468             x1 = 0; x2 = 0;
 469         }
 470     }
 471     else
 472     {
 473         x1 = 2; y1 = y;
 474         x2 = w-2; y2 = y;
 475
 476         if ( y1 > h )
 477         {
 478             y1 = h;
 479             y2 = h;
 480         }
 481         else if ( y1 < 0 )
 482         {
 483             y1 = 0;
 484             y2 = 0;
 485         }
 486     }
 487
 488     ClientToScreen(&x1, &y1);
 489     ClientToScreen(&x2, &y2);
 490
 491     screenDC.SetLogicalFunction(wxXOR);
 492     screenDC.SetPen(*m_sashTrackerPen);
 493     screenDC.SetBrush(*wxTRANSPARENT_BRUSH);
 494
 495     screenDC.DrawLine(x1, y1, x2, y2);
 496
 497     screenDC.SetLogicalFunction(wxCOPY);
 498
 499     screenDC.SetPen(wxNullPen);
 500     screenDC.SetBrush(wxNullBrush);
 501 }
 502
 503 // Position and size subwindows.
 504 // Note that the border size applies to each subwindow, not
 505 // including the edges next to the sash.
 506 void wxSplitterWindow::SizeWindows()
 507 {
 508     int w, h;
 509     GetClientSize(&w, &h);
 510
 511     if ( m_windowOne && !m_windowTwo )
 512     {
 513         m_windowOne->SetSize(m_borderSize, m_borderSize, w - 2*m_borderSize, h - 2*m_borderSize);
 514     }
 515     else if ( m_windowOne && m_windowTwo )
 516     {
 517         if (m_splitMode == wxSPLIT_VERTICAL)
 518         {
 519             int x1 = m_borderSize;
 520             int y1 = m_borderSize;
 521             int w1 = m_sashPosition - m_borderSize;
 522             int h1 = h - 2*m_borderSize;
 523
 524             int x2 = m_sashPosition + m_sashSize;
 525             int y2 = m_borderSize;
 526             int w2 = w - 2*m_borderSize - m_sashSize - w1;
 527             int h2 = h - 2*m_borderSize;
 528
 529             m_windowOne->SetSize(x1, y1, w1, h1);
 530             m_windowTwo->SetSize(x2, y2, w2, h2);
 531         }
 532         else
 533         {
 534             m_windowOne->SetSize(m_borderSize, m_borderSize,
 535                 w - 2*m_borderSize, m_sashPosition - m_borderSize);
 536             m_windowTwo->SetSize(m_borderSize, m_sashPosition + m_sashSize,
 537                 w - 2*m_borderSize, h - 2*m_borderSize - m_sashSize - (m_sashPosition - m_borderSize));
 538         }
 539     }
 540     wxClientDC dc(this);
 541     DrawBorders(dc);
 542     DrawSash(dc);
 543 }
 544
 545 // Set pane for unsplit window
 546 void wxSplitterWindow::Initialize(wxWindow *window)
 547 {
 548     m_windowOne = window;
 549     m_windowTwo = (wxWindow *) NULL;
 550     m_sashPosition = 0;
 551 }
 552
 553 // Associates the given window with window 2, drawing the appropriate sash
 554 // and changing the split mode.
 555 // Does nothing and returns FALSE if the window is already split.
 556 bool wxSplitterWindow::SplitVertically(wxWindow *window1, wxWindow *window2, int sashPosition)
 557 {
 558     if ( IsSplit() )
 559         return FALSE;
 560
 561     int w, h;
 562     GetClientSize(&w, &h);
 563
 564     m_splitMode = wxSPLIT_VERTICAL;
 565     m_windowOne = window1;
 566     m_windowTwo = window2;
 567     if ( sashPosition > 0 )
 568         m_sashPosition = sashPosition;
 569     else if ( sashPosition < 0 )
 570         m_sashPosition = w - sashPosition;
 571     else    // default
 572         m_sashPosition = w/2;
 573
 574     SizeWindows();
 575
 576     return TRUE;
 577 }
 578
 579 bool wxSplitterWindow::SplitHorizontally(wxWindow *window1, wxWindow *window2, int sashPosition)
 580 {
 581     if ( IsSplit() )
 582         return FALSE;
 583
 584     int w, h;
 585     GetClientSize(&w, &h);
 586
 587     m_splitMode = wxSPLIT_HORIZONTAL;
 588     m_windowOne = window1;
 589     m_windowTwo = window2;
 590     if ( sashPosition > 0 )
 591         m_sashPosition = sashPosition;
 592     else if ( sashPosition < 0 )
 593         m_sashPosition = h - sashPosition;
 594     else    // default
 595         m_sashPosition = h/2;
 596
 597     SizeWindows();
 598
 599     return TRUE;
 600 }
 601
 602
 603 // Remove the specified (or second) window from the view
 604 // Doesn't actually delete the window.
 605 bool wxSplitterWindow::Unsplit(wxWindow *toRemove)
 606 {
 607     if ( ! IsSplit() )
 608         return FALSE;
 609
 610     wxWindow *win = NULL;
 611     if ( toRemove == NULL || toRemove == m_windowTwo)
 612     {
 613         win = m_windowTwo ;
 614         m_windowTwo = (wxWindow *) NULL;
 615     }
 616     else if ( toRemove == m_windowOne )
 617     {
 618         win = m_windowOne ;
 619         m_windowOne = m_windowTwo;
 620         m_windowTwo = (wxWindow *) NULL;
 621     }
 622     else
 623     {
 624         wxFAIL_MSG(_T("splitter: attempt to remove a non-existent window"));
 625
 626         return FALSE;
 627     }
 628
 629     OnUnsplit(win);
 630     m_sashPosition = 0;
 631     SizeWindows();
 632
 633     return TRUE;
 634 }
 635
 636 // Replace a window with another one
 637 bool wxSplitterWindow::ReplaceWindow(wxWindow *winOld, wxWindow *winNew)
 638 {
 639     wxCHECK_MSG( winOld, FALSE, _T("use one of Split() functions instead") );
 640     wxCHECK_MSG( winNew, FALSE, _T("use Unsplit() functions instead") );
 641
 642     if ( winOld == m_windowTwo )
 643     {
 644         m_windowTwo = winNew;
 645     }
 646     else if ( winOld == m_windowOne )
 647     {
 648         m_windowOne = winNew;
 649     }
 650     else
 651     {
 652         wxFAIL_MSG(_T("splitter: attempt to replace a non-existent window"));
 653
 654         return FALSE;
 655     }
 656
 657     SizeWindows();
 658
 659     return TRUE;
 660 }
 661
 662 void wxSplitterWindow::SetSashPosition(int position, bool redraw)
 663 {
 664     m_sashPosition = position;
 665
 666     if ( redraw )
 667     {
 668         SizeWindows();
 669     }
 670 }
 671
 672 bool wxSplitterWindow::OnSashPositionChange(int newSashPosition)
 673 {
 674   // is the left/upper pane too small?
 675   if ( newSashPosition < m_minimumPaneSize )
 676     return NULL;
 677
 678   // is the right/lower pane too small?
 679   int w, h;
 680   GetClientSize(&w, &h);
 681
 682   if ( m_splitMode == wxSPLIT_VERTICAL )
 683   {
 684     if ( w - newSashPosition < m_minimumPaneSize )
 685       return FALSE;
 686   }
 687   else // m_splitMode = wxSPLIT_HORIZONTAL
 688   {
 689     if ( h - newSashPosition < m_minimumPaneSize )
 690       return FALSE;
 691   }
 692
 693   // it's ok to move sash
 694   return TRUE;
 695 }
 696
 697 // Called when the sash is double-clicked.
 698 // The default behaviour is to remove the sash if the
 699 // minimum pane size is zero.
 700 void wxSplitterWindow::OnDoubleClickSash(int WXUNUSED(x), int WXUNUSED(y) )
 701 {
 702     if ( GetMinimumPaneSize() == 0 )
 703     {
 704         Unsplit();
 705     }
 706 }
 707
 708 // Initialize colours
 709 void wxSplitterWindow::InitColours()
 710 {
 711     wxDELETE( m_facePen );
 712     wxDELETE( m_faceBrush );
 713     wxDELETE( m_mediumShadowPen );
 714     wxDELETE( m_darkShadowPen );
 715     wxDELETE( m_lightShadowPen );
 716     wxDELETE( m_hilightPen );
 717
 718     // Shadow colours
 719 #if defined(__WIN95__)
 720     wxColour faceColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
 721     m_facePen = new wxPen(faceColour, 1, wxSOLID);
 722     m_faceBrush = new wxBrush(faceColour, wxSOLID);
 723
 724     wxColour mediumShadowColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DSHADOW));
 725     m_mediumShadowPen = new wxPen(mediumShadowColour, 1, wxSOLID);
 726
 727     wxColour darkShadowColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DDKSHADOW));
 728     m_darkShadowPen = new wxPen(darkShadowColour, 1, wxSOLID);
 729
 730     wxColour lightShadowColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DLIGHT));
 731     m_lightShadowPen = new wxPen(lightShadowColour, 1, wxSOLID);
 732
 733     wxColour hilightColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DHILIGHT));
 734     m_hilightPen = new wxPen(hilightColour, 1, wxSOLID);
 735 #else // !Win32
 736     m_facePen = new wxPen("LIGHT GREY", 1, wxSOLID);
 737     m_faceBrush = new wxBrush("LIGHT GREY", wxSOLID);
 738     m_mediumShadowPen = new wxPen("GREY", 1, wxSOLID);
 739     m_darkShadowPen = new wxPen("BLACK", 1, wxSOLID);
 740     m_lightShadowPen = new wxPen("LIGHT GREY", 1, wxSOLID);
 741     m_hilightPen = new wxPen("WHITE", 1, wxSOLID);
 742 #endif // Win32/!Win32
 743 }
 744