src/univ/winuniv.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        univ/window.cpp
   3 // Purpose:     implementation of extra wxWindow methods for wxUniv port
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     06.08.00
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2000 SciTech Software, Inc. (www.scitechsoft.com)
   9 // Licence:     wxWindows license
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ===========================================================================
  13 // declarations
  14 // ===========================================================================
  15
  16 // ---------------------------------------------------------------------------
  17 // headers
  18 // ---------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "univwindow.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/app.h"
  33     #include "wx/window.h"
  34     #include "wx/dcclient.h"
  35     #include "wx/dcmemory.h"
  36     #include "wx/event.h"
  37     #include "wx/scrolbar.h"
  38     #include "wx/menu.h"
  39     #include "wx/frame.h"
  40 #endif // WX_PRECOMP
  41
  42 #include "wx/univ/colschem.h"
  43 #include "wx/univ/renderer.h"
  44 #include "wx/univ/theme.h"
  45
  46 #if wxUSE_CARET
  47     #include "wx/caret.h"
  48 #endif // wxUSE_CARET
  49
  50 // turn Refresh() debugging on/off
  51 #define WXDEBUG_REFRESH
  52
  53 #ifndef __WXDEBUG__
  54     #undef WXDEBUG_REFRESH
  55 #endif
  56
  57 #if defined(WXDEBUG_REFRESH) && defined(__WXMSW__) && !defined(__WXMICROWIN__)
  58 #include "wx/msw/private.h"
  59 #endif
  60
  61 // ============================================================================
  62 // implementation
  63 // ============================================================================
  64
  65 // ----------------------------------------------------------------------------
  66 // event tables
  67 // ----------------------------------------------------------------------------
  68
  69 // we can't use wxWindowNative here as it won't be expanded inside the macro
  70 #if defined(__WXMSW__)
  71     IMPLEMENT_DYNAMIC_CLASS(wxWindow, wxWindowMSW)
  72 #elif defined(__WXGTK__)
  73     IMPLEMENT_DYNAMIC_CLASS(wxWindow, wxWindowGTK)
  74 #elif defined(__WXMGL__)
  75     IMPLEMENT_DYNAMIC_CLASS(wxWindow, wxWindowMGL)
  76 #elif defined(__WXPM__)
  77     IMPLEMENT_DYNAMIC_CLASS(wxWindow, wxWindowOS2)
  78 #endif
  79
  80 BEGIN_EVENT_TABLE(wxWindow, wxWindowNative)
  81     EVT_SIZE(wxWindow::OnSize)
  82
  83 #if wxUSE_ACCEL || wxUSE_MENUS
  84     EVT_KEY_DOWN(wxWindow::OnKeyDown)
  85 #endif // wxUSE_ACCEL
  86
  87 #if wxUSE_MENUS
  88     EVT_CHAR(wxWindow::OnChar)
  89     EVT_KEY_UP(wxWindow::OnKeyUp)
  90 #endif // wxUSE_MENUS
  91
  92     EVT_PAINT(wxWindow::OnPaint)
  93     EVT_NC_PAINT(wxWindow::OnNcPaint)
  94     EVT_ERASE_BACKGROUND(wxWindow::OnErase)
  95 END_EVENT_TABLE()
  96
  97 // ----------------------------------------------------------------------------
  98 // creation
  99 // ----------------------------------------------------------------------------
 100
 101 void wxWindow::Init()
 102 {
 103     m_scrollbarVert =
 104     m_scrollbarHorz = (wxScrollBar *)NULL;
 105
 106     m_isCurrent = FALSE;
 107
 108     m_renderer = wxTheme::Get()->GetRenderer();
 109 }
 110
 111 bool wxWindow::Create(wxWindow *parent,
 112                       wxWindowID id,
 113                       const wxPoint& pos,
 114                       const wxSize& size,
 115                       long style,
 116                       const wxString& name)
 117 {
 118     // we add wxCLIP_CHILDREN to get the same ("natural") behaviour under MSW
 119     // as under the other platforms
 120     if ( !wxWindowNative::Create(parent, id, pos, size,
 121                                  style | wxCLIP_CHILDREN,
 122                                  name) )
 123     {
 124         return FALSE;
 125     }
 126
 127     // if we should always have the scrollbar, do show it
 128     if ( GetWindowStyle() & wxALWAYS_SHOW_SB )
 129     {
 130         m_scrollbarVert = new wxScrollBar(this, -1,
 131                                           wxDefaultPosition, wxDefaultSize,
 132                                           wxSB_VERTICAL);
 133
 134         // and position it
 135         PositionScrollbars();
 136     }
 137
 138     // the colours/fonts are default
 139     m_hasBgCol =
 140     m_hasFgCol =
 141     m_hasFont = FALSE;
 142
 143     return TRUE;
 144 }
 145
 146 // ----------------------------------------------------------------------------
 147 // background pixmap
 148 // ----------------------------------------------------------------------------
 149
 150 void wxWindow::SetBackground(const wxBitmap& bitmap,
 151                               int alignment,
 152                               wxStretch stretch)
 153 {
 154     m_bitmapBg = bitmap;
 155     m_alignBgBitmap = alignment;
 156     m_stretchBgBitmap = stretch;
 157 }
 158
 159 const wxBitmap& wxWindow::GetBackgroundBitmap(int *alignment,
 160                                                wxStretch *stretch) const
 161 {
 162     if ( m_bitmapBg.Ok() )
 163     {
 164         if ( alignment )
 165             *alignment = m_alignBgBitmap;
 166         if ( stretch )
 167             *stretch = m_stretchBgBitmap;
 168     }
 169
 170     return m_bitmapBg;
 171 }
 172
 173 // ----------------------------------------------------------------------------
 174 // painting
 175 // ----------------------------------------------------------------------------
 176
 177 // the event handler executed when the window background must be painted
 178 void wxWindow::OnErase(wxEraseEvent& event)
 179 {
 180     if ( !m_renderer )
 181     {
 182         event.Skip();
 183
 184         return;
 185     }
 186
 187     DoDrawBackground(*event.GetDC());
 188
 189     // if we have both scrollbars, we also have a square in the corner between
 190     // them which we must paint
 191     if ( m_scrollbarVert && m_scrollbarHorz )
 192     {
 193         wxSize size = GetSize();
 194         wxRect rectClient = GetClientRect(),
 195                rectBorder = m_renderer->GetBorderDimensions(GetBorder());
 196
 197         wxRect rectCorner;
 198         rectCorner.x = rectClient.GetRight() + 1;
 199         rectCorner.y = rectClient.GetBottom() + 1;
 200         rectCorner.SetRight(size.x - rectBorder.width);
 201         rectCorner.SetBottom(size.y - rectBorder.height);
 202
 203         if ( GetUpdateRegion().Contains(rectCorner) )
 204         {
 205             m_renderer->DrawScrollCorner(*event.GetDC(), rectCorner);
 206         }
 207     }
 208 }
 209
 210 // the event handlers executed when the window must be repainted
 211 void wxWindow::OnNcPaint(wxPaintEvent& event)
 212 {
 213     if ( m_renderer )
 214     {
 215         // get the window rect
 216         wxRect rect;
 217         wxSize size = GetSize();
 218         rect.x =
 219         rect.y = 0;
 220         rect.width = size.x;
 221         rect.height = size.y;
 222
 223         // if the scrollbars are outside the border, we must adjust the rect to
 224         // exclude them
 225         if ( !m_renderer->AreScrollbarsInsideBorder() )
 226         {
 227             wxScrollBar *scrollbar = GetScrollbar(wxVERTICAL);
 228             if ( scrollbar )
 229                 rect.width -= scrollbar->GetSize().x;
 230
 231             scrollbar = GetScrollbar(wxHORIZONTAL);
 232             if ( scrollbar )
 233                 rect.height -= scrollbar->GetSize().y;
 234         }
 235
 236         // get the DC and draw the border on it
 237         wxWindowDC dc(this);
 238         DoDrawBorder(dc, rect);
 239     }
 240 }
 241
 242 void wxWindow::OnPaint(wxPaintEvent& event)
 243 {
 244     if ( !m_renderer )
 245     {
 246         // it is a native control which paints itself
 247         event.Skip();
 248     }
 249     else
 250     {
 251         // get the DC to use and create renderer on it
 252         wxPaintDC dc(this);
 253         wxControlRenderer renderer(this, dc, m_renderer);
 254
 255         // draw the control
 256         DoDraw(&renderer);
 257     }
 258 }
 259
 260 bool wxWindow::DoDrawBackground(wxDC& dc)
 261 {
 262     // FIXME: leaving this code in leads to partial bg redraws sometimes under
 263     //        MSW
 264     wxRect rect;
 265 #ifndef __WXMSW__
 266     rect = GetUpdateRegion().GetBox();
 267     if ( !rect.width && !rect.height )
 268 #endif
 269     {
 270         wxSize size = GetSize();
 271         rect.width = size.x;
 272         rect.height = size.y;
 273     }
 274
 275     if ( GetBackgroundBitmap().Ok() )
 276     {
 277         // get the bitmap and the flags
 278         int alignment;
 279         wxStretch stretch;
 280         wxBitmap bmp = GetBackgroundBitmap(&alignment, &stretch);
 281         wxControlRenderer::DrawBitmap(dc, bmp, rect, alignment, stretch);
 282     }
 283     else // just fill it with bg colour if no bitmap
 284     {
 285         m_renderer->DrawBackground(dc, wxTHEME_BG_COLOUR(this),
 286                                    rect, GetStateFlags());
 287     }
 288
 289     return TRUE;
 290 }
 291
 292 void wxWindow::EraseBackground(wxDC& dc, const wxRect& rect)
 293 {
 294     // TODO: handle bg bitmaps here!
 295
 296     m_renderer->DrawBackground(dc, wxTHEME_BG_COLOUR(this), rect, GetStateFlags());
 297 }
 298
 299 void wxWindow::DoDrawBorder(wxDC& dc, const wxRect& rect)
 300 {
 301     // draw outline unless the update region is enitrely inside it in which
 302     // case we don't need to do it
 303 #if 0 // doesn't seem to work, why?
 304     if ( wxRegion(rect).Contains(GetUpdateRegion().GetBox()) != wxInRegion )
 305 #endif
 306     {
 307         m_renderer->DrawBorder(dc, GetBorder(), rect, GetStateFlags());
 308     }
 309 }
 310
 311 void wxWindow::DoDraw(wxControlRenderer *renderer)
 312 {
 313 }
 314
 315 void wxWindow::Refresh(bool eraseBackground, const wxRect *rectClient)
 316 {
 317     wxRect rectWin;
 318     wxPoint pt = GetClientAreaOrigin();
 319
 320     wxSize size = GetClientSize();
 321
 322     if ( rectClient )
 323     {
 324         rectWin = *rectClient;
 325
 326         // don't refresh anything beyond the client area (scrollbars for
 327         // example)
 328         if ( rectWin.GetRight() > size.x )
 329             rectWin.SetRight(size.x);
 330         if ( rectWin.GetBottom() > size.y )
 331             rectWin.SetBottom(size.y);
 332
 333         rectWin.Offset(pt);
 334     }
 335     else // refresh the entire client area
 336     {
 337         rectWin.x = pt.x;
 338         rectWin.y = pt.y;
 339         rectWin.width = size.x;
 340         rectWin.height = size.y;
 341     }
 342
 343     // debugging helper
 344 #ifdef WXDEBUG_REFRESH
 345     static bool s_refreshDebug = FALSE;
 346     if ( s_refreshDebug )
 347     {
 348         wxWindowDC dc(this);
 349         dc.SetBrush(*wxCYAN_BRUSH);
 350         dc.SetPen(*wxTRANSPARENT_PEN);
 351         dc.DrawRectangle(rectWin);
 352
 353         // under Unix we use "--sync" X option for this
 354         #if defined(__WXMSW__) && !defined(__WXMICROWIN__)
 355             ::GdiFlush();
 356             ::Sleep(200);
 357         #endif // __WXMSW__
 358     }
 359 #endif // WXDEBUG_REFRESH
 360
 361     wxWindowNative::Refresh(eraseBackground, &rectWin);
 362 }
 363
 364 // ----------------------------------------------------------------------------
 365 // state flags
 366 // ----------------------------------------------------------------------------
 367
 368 bool wxWindow::Enable(bool enable)
 369 {
 370     if ( !wxWindowNative::Enable(enable) )
 371         return FALSE;
 372
 373     // disabled window can't keep focus
 374     if ( FindFocus() == this )
 375     {
 376         GetParent()->SetFocus();
 377     }
 378
 379     if ( m_renderer )
 380     {
 381         // a window with renderer is drawn by ourselves and it has to be
 382         // refreshed to reflect its new status
 383         Refresh();
 384     }
 385
 386     return TRUE;
 387 }
 388
 389 bool wxWindow::IsFocused() const
 390 {
 391     wxWindow *self = wxConstCast(this, wxWindow);
 392     return self->FindFocus() == self;
 393 }
 394
 395 bool wxWindow::IsPressed() const
 396 {
 397     return FALSE;
 398 }
 399
 400 bool wxWindow::IsDefault() const
 401 {
 402     return FALSE;
 403 }
 404
 405 bool wxWindow::IsCurrent() const
 406 {
 407     return m_isCurrent;
 408 }
 409
 410 bool wxWindow::SetCurrent(bool doit)
 411 {
 412     if ( doit == m_isCurrent )
 413         return FALSE;
 414
 415     m_isCurrent = doit;
 416
 417     if ( CanBeHighlighted() )
 418         Refresh();
 419
 420     return TRUE;
 421 }
 422
 423 int wxWindow::GetStateFlags() const
 424 {
 425     int flags = 0;
 426     if ( !IsEnabled() )
 427         flags |= wxCONTROL_DISABLED;
 428
 429     // the following states are only possible if our application is active - if
 430     // it is not, even our default/focused controls shouldn't appear as such
 431     if ( wxTheApp->IsActive() )
 432     {
 433         if ( IsCurrent() )
 434             flags |= wxCONTROL_CURRENT;
 435         if ( IsFocused() )
 436             flags |= wxCONTROL_FOCUSED;
 437         if ( IsPressed() )
 438             flags |= wxCONTROL_PRESSED;
 439         if ( IsDefault() )
 440             flags |= wxCONTROL_ISDEFAULT;
 441     }
 442
 443     return flags;
 444 }
 445
 446 // ----------------------------------------------------------------------------
 447 // size
 448 // ----------------------------------------------------------------------------
 449
 450 void wxWindow::OnSize(wxSizeEvent& event)
 451 {
 452     if ( m_scrollbarVert || m_scrollbarHorz )
 453     {
 454         PositionScrollbars();
 455     }
 456
 457     event.Skip();
 458 }
 459
 460 wxSize wxWindow::DoGetBestSize() const
 461 {
 462     return AdjustSize(DoGetBestClientSize());
 463 }
 464
 465 wxSize wxWindow::DoGetBestClientSize() const
 466 {
 467     return wxWindowNative::DoGetBestSize();
 468 }
 469
 470 wxSize wxWindow::AdjustSize(const wxSize& size) const
 471 {
 472     wxSize sz = size;
 473     if ( m_renderer )
 474         m_renderer->AdjustSize(&sz, this);
 475     return sz;
 476 }
 477
 478 wxPoint wxWindow::GetClientAreaOrigin() const
 479 {
 480     wxPoint pt = wxWindowBase::GetClientAreaOrigin();
 481
 482     if ( m_renderer )
 483         pt += m_renderer->GetBorderDimensions(GetBorder()).GetPosition();
 484
 485     return pt;
 486 }
 487
 488 void wxWindow::DoGetClientSize(int *width, int *height) const
 489 {
 490     // if it is a native window, we assume it handles the scrollbars itself
 491     // too - and if it doesn't, there is not much we can do
 492     if ( !m_renderer )
 493     {
 494         wxWindowNative::DoGetClientSize(width, height);
 495
 496         return;
 497     }
 498
 499     int w, h;
 500     wxWindowNative::DoGetClientSize(&w, &h);
 501
 502     // we assume that the scrollbars are positioned correctly (by a previous
 503     // call to PositionScrollbars()) here
 504
 505     wxRect rectBorder;
 506     if ( m_renderer )
 507         rectBorder = m_renderer->GetBorderDimensions(GetBorder());
 508
 509     bool inside = m_renderer->AreScrollbarsInsideBorder();
 510
 511     if ( width )
 512     {
 513         // in any case, take account of the scrollbar
 514         if ( m_scrollbarVert )
 515             w -= m_scrollbarVert->GetSize().x;
 516
 517         // if we don't have scrollbar or if it is outside the border (and not
 518         // blended into it), take account of the right border as well
 519         if ( !m_scrollbarVert || inside )
 520             w -= rectBorder.width;
 521
 522         // and always account for the left border
 523         *width = w - rectBorder.x;
 524
 525         // we shouldn't return invalid width
 526         if ( *width < 0 )
 527             *width = 0;
 528     }
 529
 530     if ( height )
 531     {
 532         if ( m_scrollbarHorz )
 533             h -= m_scrollbarHorz->GetSize().y;
 534
 535         if ( !m_scrollbarHorz || inside )
 536             h -= rectBorder.height;
 537
 538         *height = h - rectBorder.y;
 539
 540         // we shouldn't return invalid height
 541         if ( *height < 0 )
 542             *height = 0;
 543     }
 544 }
 545
 546 void wxWindow::DoSetClientSize(int width, int height)
 547 {
 548     // take into account the borders
 549     wxRect rectBorder = m_renderer->GetBorderDimensions(GetBorder());
 550     width += rectBorder.x;
 551     height += rectBorder.y;
 552
 553     // and the scrollbars (as they may be offset into the border, use the
 554     // scrollbar position, not size - this supposes that PositionScrollbars()
 555     // had been called before)
 556     bool inside = m_renderer->AreScrollbarsInsideBorder();
 557     wxSize size = GetSize();
 558     if ( m_scrollbarVert )
 559         width += size.x - m_scrollbarVert->GetPosition().x;
 560     if ( !m_scrollbarVert || inside )
 561         width += rectBorder.width;
 562
 563     if ( m_scrollbarHorz )
 564         height += size.y - m_scrollbarHorz->GetPosition().y;
 565     if ( !m_scrollbarHorz || inside )
 566         height += rectBorder.height;
 567
 568     wxWindowNative::DoSetClientSize(width, height);
 569 }
 570
 571 wxHitTest wxWindow::DoHitTest(wxCoord x, wxCoord y) const
 572 {
 573     wxHitTest ht = wxWindowNative::DoHitTest(x, y);
 574     if ( ht == wxHT_WINDOW_INSIDE )
 575     {
 576         if ( m_scrollbarVert && x >= m_scrollbarVert->GetPosition().x )
 577         {
 578             // it can still be changed below because it may also be the corner
 579             ht = wxHT_WINDOW_VERT_SCROLLBAR;
 580         }
 581
 582         if ( m_scrollbarHorz && y >= m_scrollbarHorz->GetPosition().y )
 583         {
 584             ht = ht == wxHT_WINDOW_VERT_SCROLLBAR ? wxHT_WINDOW_CORNER
 585                                                   : wxHT_WINDOW_HORZ_SCROLLBAR;
 586         }
 587     }
 588
 589     return ht;
 590 }
 591
 592 // ----------------------------------------------------------------------------
 593 // scrolling: we implement it entirely ourselves except for ScrollWindow()
 594 // function which is supposed to be (efficiently) implemented by the native
 595 // window class
 596 // ----------------------------------------------------------------------------
 597
 598 void wxWindow::RefreshScrollbars()
 599 {
 600     if ( m_scrollbarHorz )
 601         m_scrollbarHorz->Refresh();
 602
 603     if ( m_scrollbarVert )
 604         m_scrollbarVert->Refresh();
 605 }
 606
 607 void wxWindow::PositionScrollbars()
 608 {
 609     // do not use GetClientSize/Rect as it relies on the scrollbars being
 610     // correctly positioned
 611
 612     wxSize size = GetSize();
 613     wxBorder border = GetBorder();
 614     wxRect rectBorder = m_renderer->GetBorderDimensions(border);
 615     bool inside = m_renderer->AreScrollbarsInsideBorder();
 616
 617     int height = m_scrollbarHorz ? m_scrollbarHorz->GetSize().y : 0;
 618     int width = m_scrollbarVert ? m_scrollbarVert->GetSize().x : 0;
 619
 620     wxRect rectBar;
 621     if ( m_scrollbarVert )
 622     {
 623         rectBar.x = size.x - width;
 624         if ( inside )
 625            rectBar.x -= rectBorder.width;
 626         rectBar.width = width;
 627         rectBar.y = 0;
 628         if ( inside )
 629             rectBar.y += rectBorder.y;
 630         rectBar.height = size.y - height;
 631         if ( inside )
 632             rectBar.height -= rectBorder.y + rectBorder.height;
 633
 634         m_scrollbarVert->SetSize(rectBar, wxSIZE_NO_ADJUSTMENTS);
 635     }
 636
 637     if ( m_scrollbarHorz )
 638     {
 639         rectBar.y = size.y - height;
 640         if ( inside )
 641             rectBar.y -= rectBorder.height;
 642         rectBar.height = height;
 643         rectBar.x = 0;
 644         if ( inside )
 645             rectBar.x += rectBorder.x;
 646         rectBar.width = size.x - width;
 647         if ( inside )
 648             rectBar.width -= rectBorder.x + rectBorder.width;
 649
 650         m_scrollbarHorz->SetSize(rectBar, wxSIZE_NO_ADJUSTMENTS);
 651     }
 652
 653     RefreshScrollbars();
 654 }
 655
 656 void wxWindow::SetScrollbar(int orient,
 657                             int pos,
 658                             int pageSize,
 659                             int range,
 660                             bool refresh)
 661 {
 662     bool hasClientSizeChanged = FALSE;
 663     wxScrollBar *scrollbar = GetScrollbar(orient);
 664     if ( range )
 665     {
 666         if ( !scrollbar )
 667         {
 668             // create it
 669             scrollbar = new wxScrollBar(this, -1,
 670                                         wxDefaultPosition, wxDefaultSize,
 671                                         orient & wxVERTICAL ? wxSB_VERTICAL
 672                                                             : wxSB_HORIZONTAL);
 673             if ( orient & wxVERTICAL )
 674                 m_scrollbarVert = scrollbar;
 675             else
 676                 m_scrollbarHorz = scrollbar;
 677
 678             // the client area diminished as we created a scrollbar
 679             hasClientSizeChanged = TRUE;
 680
 681             PositionScrollbars();
 682         }
 683         else if ( GetWindowStyle() & wxALWAYS_SHOW_SB )
 684         {
 685             // we might have disabled it before
 686             scrollbar->Enable();
 687         }
 688
 689         scrollbar->SetScrollbar(pos, pageSize, range, pageSize, refresh);
 690     }
 691     else // no range means no scrollbar
 692     {
 693         if ( scrollbar )
 694         {
 695             // wxALWAYS_SHOW_SB only applies to the vertical scrollbar
 696             if ( (orient & wxVERTICAL) && (GetWindowStyle() & wxALWAYS_SHOW_SB) )
 697             {
 698                 // just disable the scrollbar
 699                 scrollbar->SetScrollbar(pos, pageSize, range, pageSize, refresh);
 700                 scrollbar->Disable();
 701             }
 702             else // really remove the scrollbar
 703             {
 704                 delete scrollbar;
 705
 706                 if ( orient & wxVERTICAL )
 707                     m_scrollbarVert = NULL;
 708                 else
 709                     m_scrollbarHorz = NULL;
 710
 711                 // the client area increased as we removed a scrollbar
 712                 hasClientSizeChanged = TRUE;
 713
 714                 // the size of the remaining scrollbar must be adjusted
 715                 if ( m_scrollbarHorz || m_scrollbarVert )
 716                 {
 717                     PositionScrollbars();
 718                 }
 719             }
 720         }
 721     }
 722
 723     // give the window a chance to relayout
 724     if ( hasClientSizeChanged )
 725     {
 726         wxSizeEvent event(GetSize());
 727         (void)GetEventHandler()->ProcessEvent(event);
 728     }
 729 }
 730
 731 void wxWindow::SetScrollPos(int orient, int pos, bool refresh)
 732 {
 733     wxScrollBar *scrollbar = GetScrollbar(orient);
 734     wxCHECK_RET( scrollbar, _T("no scrollbar to set position for") );
 735
 736     scrollbar->SetThumbPosition(pos);
 737
 738     // VZ: I think we can safely ignore this as we always refresh it
 739     //     automatically whenever the value chanegs
 740 #if 0
 741     if ( refresh )
 742         Refresh();
 743 #endif
 744 }
 745
 746 int wxWindow::GetScrollPos(int orient) const
 747 {
 748     wxScrollBar *scrollbar = GetScrollbar(orient);
 749     return scrollbar ? scrollbar->GetThumbPosition() : 0;
 750 }
 751
 752 int wxWindow::GetScrollThumb(int orient) const
 753 {
 754     wxScrollBar *scrollbar = GetScrollbar(orient);
 755     return scrollbar ? scrollbar->GetThumbSize() : 0;
 756 }
 757
 758 int wxWindow::GetScrollRange(int orient) const
 759 {
 760     wxScrollBar *scrollbar = GetScrollbar(orient);
 761     return scrollbar ? scrollbar->GetRange() : 0;
 762 }
 763
 764 void wxWindow::ScrollWindow(int dx, int dy, const wxRect *rect)
 765 {
 766     // before scrolling it, ensure that we don't have any unpainted areas
 767     Update();
 768
 769     wxRect r;
 770
 771     if ( dx )
 772     {
 773         r = ScrollNoRefresh(dx, 0, rect);
 774         Refresh(TRUE /* erase bkgnd */, &r);
 775     }
 776
 777     if ( dy )
 778     {
 779         r = ScrollNoRefresh(0, dy, rect);
 780         Refresh(TRUE /* erase bkgnd */, &r);
 781     }
 782 }
 783
 784 wxRect wxWindow::ScrollNoRefresh(int dx, int dy, const wxRect *rectTotal)
 785 {
 786     wxASSERT_MSG( !dx || !dy, _T("can't be used for diag scrolling") );
 787
 788     // the rect to refresh (which we will calculate)
 789     wxRect rect;
 790
 791     if ( !dx && !dy )
 792     {
 793         // nothing to do
 794         return rect;
 795     }
 796
 797     // calculate the part of the window which we can just redraw in the new
 798     // location
 799     wxSize sizeTotal = rectTotal ? rectTotal->GetSize() : GetClientSize();
 800
 801     wxLogTrace(_T("scroll"), _T("rect is %dx%d, scroll by %d, %d"),
 802                sizeTotal.x, sizeTotal.y, dx, dy);
 803
 804     // the initial and end point of the region we move in client coords
 805     wxPoint ptSource, ptDest;
 806     if ( rectTotal )
 807     {
 808         ptSource = rectTotal->GetPosition();
 809         ptDest = rectTotal->GetPosition();
 810     }
 811
 812     // the size of this region
 813     wxSize size;
 814     size.x = sizeTotal.x - abs(dx);
 815     size.y = sizeTotal.y - abs(dy);
 816     if ( size.x <= 0 || size.y <= 0 )
 817     {
 818         // just redraw everything as nothing of the displayed image will stay
 819         wxLogTrace(_T("scroll"), _T("refreshing everything"));
 820
 821         rect = rectTotal ? *rectTotal : wxRect(0, 0, sizeTotal.x, sizeTotal.y);
 822     }
 823     else // move the part which doesn't change to the new location
 824     {
 825         // note that when we scroll the canvas in some direction we move the
 826         // block which doesn't need to be refreshed in the opposite direction
 827
 828         if ( dx < 0 )
 829         {
 830             // scroll to the right, move to the left
 831             ptSource.x -= dx;
 832         }
 833         else
 834         {
 835             // scroll to the left, move to the right
 836             ptDest.x += dx;
 837         }
 838
 839         if ( dy < 0 )
 840         {
 841             // scroll down, move up
 842             ptSource.y -= dy;
 843         }
 844         else
 845         {
 846             // scroll up, move down
 847             ptDest.y += dy;
 848         }
 849
 850 #if wxUSE_CARET
 851         // we need to hide the caret before moving or it will erase itself at
 852         // the wrong (old) location
 853         wxCaret *caret = GetCaret();
 854         if ( caret )
 855             caret->Hide();
 856 #endif // wxUSE_CARET
 857
 858         // do move
 859         wxClientDC dc(this);
 860         wxBitmap bmp(size.x, size.y);
 861         wxMemoryDC dcMem;
 862         dcMem.SelectObject(bmp);
 863
 864         dcMem.Blit(wxPoint(0, 0), size, &dc, ptSource
 865 #if defined(__WXGTK__) && !defined(wxHAS_WORKING_GTK_DC_BLIT)
 866                 + GetClientAreaOrigin()
 867 #endif // broken wxGTK wxDC::Blit
 868                   );
 869         dc.Blit(ptDest, size, &dcMem, wxPoint(0, 0));
 870
 871         wxLogTrace(_T("scroll"),
 872                    _T("Blit: (%d, %d) of size %dx%d -> (%d, %d)"),
 873                    ptSource.x, ptSource.y,
 874                    size.x, size.y,
 875                    ptDest.x, ptDest.y);
 876
 877         // and now repaint the uncovered area
 878
 879         // FIXME: We repaint the intersection of these rectangles twice - is
 880         //        it bad? I don't think so as it is rare to scroll the window
 881         //        diagonally anyhow and so adding extra logic to compute
 882         //        rectangle intersection is probably not worth the effort
 883
 884         rect.x = ptSource.x;
 885         rect.y = ptSource.y;
 886
 887         if ( dx )
 888         {
 889             if ( dx < 0 )
 890             {
 891                 // refresh the area along the right border
 892                 rect.x += size.x + dx;
 893                 rect.width = -dx;
 894             }
 895             else
 896             {
 897                 // refresh the area along the left border
 898                 rect.width = dx;
 899             }
 900
 901             rect.height = sizeTotal.y;
 902
 903             wxLogTrace(_T("scroll"), _T("refreshing (%d, %d)-(%d, %d)"),
 904                        rect.x, rect.y,
 905                        rect.GetRight() + 1, rect.GetBottom() + 1);
 906         }
 907
 908         if ( dy )
 909         {
 910             if ( dy < 0 )
 911             {
 912                 // refresh the area along the bottom border
 913                 rect.y += size.y + dy;
 914                 rect.height = -dy;
 915             }
 916             else
 917             {
 918                 // refresh the area along the top border
 919                 rect.height = dy;
 920             }
 921
 922             rect.width = sizeTotal.x;
 923
 924             wxLogTrace(_T("scroll"), _T("refreshing (%d, %d)-(%d, %d)"),
 925                        rect.x, rect.y,
 926                        rect.GetRight() + 1, rect.GetBottom() + 1);
 927         }
 928
 929 #if wxUSE_CARET
 930         if ( caret )
 931             caret->Show();
 932 #endif // wxUSE_CARET
 933     }
 934
 935     return rect;
 936 }
 937
 938 // ----------------------------------------------------------------------------
 939 // colours/fonts
 940 // ----------------------------------------------------------------------------
 941
 942 bool wxWindow::SetBackgroundColour(const wxColour& colour)
 943 {
 944     if ( !wxWindowNative::SetBackgroundColour(colour) )
 945         return FALSE;
 946
 947     m_hasBgCol = TRUE;
 948
 949     return TRUE;
 950 }
 951
 952 bool wxWindow::SetForegroundColour(const wxColour& colour)
 953 {
 954     if ( !wxWindowNative::SetForegroundColour(colour) )
 955         return FALSE;
 956
 957     m_hasFgCol = TRUE;
 958
 959     return TRUE;
 960 }
 961
 962 bool wxWindow::SetFont(const wxFont& font)
 963 {
 964     if ( !wxWindowNative::SetFont(font) )
 965         return FALSE;
 966
 967     m_hasFont = TRUE;
 968
 969     return TRUE;
 970 }
 971
 972 // ----------------------------------------------------------------------------
 973 // mouse capture
 974 // ----------------------------------------------------------------------------
 975
 976 struct WXDLLEXPORT wxWindowNext
 977 {
 978     wxWindow *win;
 979     wxWindowNext *next;
 980 } *wxWindow::ms_winCaptureNext = NULL;
 981
 982 void wxWindow::CaptureMouse()
 983 {
 984     wxLogTrace(_T("mousecapture"), _T("CaptureMouse(0x%08x)"), this);
 985
 986     wxWindow *winOld = GetCapture();
 987     if ( winOld )
 988     {
 989         // save it on stack
 990         wxWindowNext *item = new wxWindowNext;
 991         item->win = winOld;
 992         item->next = ms_winCaptureNext;
 993         ms_winCaptureNext = item;
 994     }
 995     //else: no mouse capture to save
 996
 997     wxWindowNative::CaptureMouse();
 998 }
 999
1000 void wxWindow::ReleaseMouse()
1001 {
1002     wxWindowNative::ReleaseMouse();
1003
1004     if ( ms_winCaptureNext )
1005     {
1006         ms_winCaptureNext->win->CaptureMouse();
1007
1008         wxWindowNext *item = ms_winCaptureNext;
1009         ms_winCaptureNext = item->next;
1010         delete item;
1011     }
1012     //else: stack is empty, no previous capture
1013
1014     wxLogTrace(_T("mousecapture"),
1015                _T("After ReleaseMouse() mouse is captured by 0x%08x"),
1016                GetCapture());
1017 }
1018
1019 // ----------------------------------------------------------------------------
1020 // accelerators and menu hot keys
1021 // ----------------------------------------------------------------------------
1022
1023 #if wxUSE_MENUS
1024     // the last window over which Alt was pressed (used by OnKeyUp)
1025     wxWindow *wxWindow::ms_winLastAltPress = NULL;
1026 #endif // wxUSE_MENUS
1027
1028 #if wxUSE_ACCEL || wxUSE_MENUS
1029
1030 void wxWindow::OnKeyDown(wxKeyEvent& event)
1031 {
1032 #if wxUSE_MENUS
1033     int key = event.GetKeyCode();
1034     if ( !event.ControlDown() && (key == WXK_MENU || key == WXK_F10) )
1035     {
1036         ms_winLastAltPress = this;
1037
1038         // it can't be an accel anyhow
1039         return;
1040     }
1041
1042     ms_winLastAltPress = NULL;
1043 #endif // wxUSE_MENUS
1044
1045 #if wxUSE_ACCEL
1046     for ( wxWindow *win = this; win; win = win->GetParent() )
1047     {
1048         int command = win->GetAcceleratorTable()->GetCommand(event);
1049         if ( command != -1 )
1050         {
1051             wxCommandEvent eventCmd(wxEVT_COMMAND_MENU_SELECTED, command);
1052             if ( win->GetEventHandler()->ProcessEvent(eventCmd) )
1053             {
1054                 // skip "event.Skip()" below
1055                 return;
1056             }
1057         }
1058
1059         if ( win->IsTopLevel() )
1060         {
1061             // try the frame menu bar
1062 #if wxUSE_MENUS
1063             wxFrame *frame = wxDynamicCast(win, wxFrame);
1064             if ( frame )
1065             {
1066                 wxMenuBar *menubar = frame->GetMenuBar();
1067                 if ( menubar && menubar->ProcessAccelEvent(event) )
1068                 {
1069                     // skip "event.Skip()" below
1070                     return;
1071                 }
1072             }
1073 #endif // wxUSE_MENUS
1074
1075             // don't propagate accels from the child frame to the parent one
1076             break;
1077         }
1078     }
1079 #endif // wxUSE_ACCEL
1080
1081     event.Skip();
1082 }
1083
1084 #endif // wxUSE_ACCEL
1085
1086 #if wxUSE_MENUS
1087
1088 wxMenuBar *wxWindow::GetParentFrameMenuBar() const
1089 {
1090     for ( const wxWindow *win = this; win; win = win->GetParent() )
1091     {
1092         if ( win->IsTopLevel() )
1093         {
1094             wxFrame *frame = wxDynamicCast(win, wxFrame);
1095             if ( frame )
1096             {
1097                 return frame->GetMenuBar();
1098             }
1099
1100             // don't look further - we don't want to return the menubar of the
1101             // parent frame
1102             break;
1103         }
1104     }
1105
1106     return NULL;
1107 }
1108
1109 void wxWindow::OnChar(wxKeyEvent& event)
1110 {
1111     if ( event.AltDown() && !event.ControlDown() )
1112     {
1113         int key = event.GetKeyCode();
1114
1115         wxMenuBar *menubar = GetParentFrameMenuBar();
1116         if ( menubar )
1117         {
1118             int item = menubar->FindNextItemForAccel(-1, key);
1119             if ( item != -1 )
1120             {
1121                 menubar->PopupMenu((size_t)item);
1122
1123                 // skip "event.Skip()" below
1124                 return;
1125             }
1126         }
1127     }
1128
1129     event.Skip();
1130 }
1131
1132 void wxWindow::OnKeyUp(wxKeyEvent& event)
1133 {
1134     int key = event.GetKeyCode();
1135     if ( !event.HasModifiers() && (key == WXK_MENU || key == WXK_F10) )
1136     {
1137         // only process Alt release specially if there were no other key
1138         // presses since Alt had been pressed and if both events happened in
1139         // the same window
1140         if ( ms_winLastAltPress == this )
1141         {
1142             wxMenuBar *menubar = GetParentFrameMenuBar();
1143             if ( menubar && this != menubar )
1144             {
1145                 menubar->SelectMenu(0);
1146             }
1147         }
1148     }
1149     else
1150     {
1151         event.Skip();
1152     }
1153
1154     // in any case reset it
1155     ms_winLastAltPress = NULL;
1156 }
1157
1158 #endif // wxUSE_MENUS
1159