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/log.h"
  43 #include "wx/univ/colschem.h"
  44 #include "wx/univ/renderer.h"
  45 #include "wx/univ/theme.h"
  46
  47 #if wxUSE_CARET
  48     #include "wx/caret.h"
  49 #endif // wxUSE_CARET
  50
  51 // turn Refresh() debugging on/off
  52 #define WXDEBUG_REFRESH
  53
  54 #ifndef __WXDEBUG__
  55     #undef WXDEBUG_REFRESH
  56 #endif
  57
  58 #if defined(WXDEBUG_REFRESH) && defined(__WXMSW__) && !defined(__WXMICROWIN__)
  59 #include "wx/msw/private.h"
  60 #endif
  61
  62 // ============================================================================
  63 // implementation
  64 // ============================================================================
  65
  66 // ----------------------------------------------------------------------------
  67 // event tables
  68 // ----------------------------------------------------------------------------
  69
  70 // we can't use wxWindowNative here as it won't be expanded inside the macro
  71 #if defined(__WXMSW__)
  72     IMPLEMENT_DYNAMIC_CLASS(wxWindow, wxWindowMSW)
  73 #elif defined(__WXGTK__)
  74     IMPLEMENT_DYNAMIC_CLASS(wxWindow, wxWindowGTK)
  75 #elif defined(__WXMGL__)
  76     IMPLEMENT_DYNAMIC_CLASS(wxWindow, wxWindowMGL)
  77 #elif defined(__WXX11__)
  78     IMPLEMENT_DYNAMIC_CLASS(wxWindow, wxWindowX11)
  79 #elif defined(__WXPM__)
  80     IMPLEMENT_DYNAMIC_CLASS(wxWindow, wxWindowOS2)
  81 #endif
  82
  83 BEGIN_EVENT_TABLE(wxWindow, wxWindowNative)
  84     EVT_SIZE(wxWindow::OnSize)
  85
  86 #if wxUSE_ACCEL || wxUSE_MENUS
  87     EVT_KEY_DOWN(wxWindow::OnKeyDown)
  88 #endif // wxUSE_ACCEL
  89
  90 #if wxUSE_MENUS
  91     EVT_CHAR(wxWindow::OnChar)
  92     EVT_KEY_UP(wxWindow::OnKeyUp)
  93 #endif // wxUSE_MENUS
  94
  95     EVT_PAINT(wxWindow::OnPaint)
  96     EVT_NC_PAINT(wxWindow::OnNcPaint)
  97     EVT_ERASE_BACKGROUND(wxWindow::OnErase)
  98 END_EVENT_TABLE()
  99
 100 // ----------------------------------------------------------------------------
 101 // creation
 102 // ----------------------------------------------------------------------------
 103
 104 void wxWindow::Init()
 105 {
 106     m_scrollbarVert =
 107     m_scrollbarHorz = (wxScrollBar *)NULL;
 108
 109     m_isCurrent = FALSE;
 110
 111     m_renderer = wxTheme::Get()->GetRenderer();
 112
 113     m_oldSize.x = -1;
 114     m_oldSize.y = -1;
 115 }
 116
 117 bool wxWindow::Create(wxWindow *parent,
 118                       wxWindowID id,
 119                       const wxPoint& pos,
 120                       const wxSize& size,
 121                       long style,
 122                       const wxString& name)
 123 {
 124     // we add wxCLIP_CHILDREN to get the same ("natural") behaviour under MSW
 125     // as under the other platforms
 126     if ( !wxWindowNative::Create(parent, id, pos, size,
 127                                  style | wxCLIP_CHILDREN,
 128                                  name) )
 129     {
 130         return FALSE;
 131     }
 132
 133     // if we should always have the scrollbar, do show it
 134     if ( GetWindowStyle() & wxALWAYS_SHOW_SB )
 135     {
 136 #if wxUSE_TWO_WINDOWS
 137         SetInsertIntoMain( TRUE );
 138 #endif
 139         m_scrollbarVert = new wxScrollBar(this, -1,
 140                                           wxDefaultPosition, wxDefaultSize,
 141                                           wxSB_VERTICAL);
 142 #if wxUSE_TWO_WINDOWS
 143         SetInsertIntoMain( FALSE );
 144 #endif
 145
 146         // and position it
 147         PositionScrollbars();
 148     }
 149
 150     return TRUE;
 151 }
 152
 153 // ----------------------------------------------------------------------------
 154 // background pixmap
 155 // ----------------------------------------------------------------------------
 156
 157 void wxWindow::SetBackground(const wxBitmap& bitmap,
 158                               int alignment,
 159                               wxStretch stretch)
 160 {
 161     m_bitmapBg = bitmap;
 162     m_alignBgBitmap = alignment;
 163     m_stretchBgBitmap = stretch;
 164 }
 165
 166 const wxBitmap& wxWindow::GetBackgroundBitmap(int *alignment,
 167                                                wxStretch *stretch) const
 168 {
 169     if ( m_bitmapBg.Ok() )
 170     {
 171         if ( alignment )
 172             *alignment = m_alignBgBitmap;
 173         if ( stretch )
 174             *stretch = m_stretchBgBitmap;
 175     }
 176
 177     return m_bitmapBg;
 178 }
 179
 180 // ----------------------------------------------------------------------------
 181 // painting
 182 // ----------------------------------------------------------------------------
 183
 184 // the event handlers executed when the window must be repainted
 185 void wxWindow::OnNcPaint(wxPaintEvent& event)
 186 {
 187     if ( m_renderer )
 188     {
 189         // get the window rect
 190         wxRect rect;
 191         wxSize size = GetSize();
 192         rect.x =
 193         rect.y = 0;
 194         rect.width = size.x;
 195         rect.height = size.y;
 196
 197         // if the scrollbars are outside the border, we must adjust the rect to
 198         // exclude them
 199         if ( !m_renderer->AreScrollbarsInsideBorder() )
 200         {
 201             wxScrollBar *scrollbar = GetScrollbar(wxVERTICAL);
 202             if ( scrollbar )
 203                 rect.width -= scrollbar->GetSize().x;
 204
 205             scrollbar = GetScrollbar(wxHORIZONTAL);
 206             if ( scrollbar )
 207                 rect.height -= scrollbar->GetSize().y;
 208         }
 209
 210         // get the DC and draw the border on it
 211         wxWindowDC dc(this);
 212         DoDrawBorder(dc, rect);
 213     }
 214 }
 215
 216 void wxWindow::OnPaint(wxPaintEvent& event)
 217 {
 218     if ( !m_renderer )
 219     {
 220         // it is a native control which paints itself
 221         event.Skip();
 222     }
 223     else
 224     {
 225         // get the DC to use and create renderer on it
 226         wxPaintDC dc(this);
 227         wxControlRenderer renderer(this, dc, m_renderer);
 228
 229         // draw the control
 230         DoDraw(&renderer);
 231     }
 232 }
 233
 234 // the event handler executed when the window background must be painted
 235 void wxWindow::OnErase(wxEraseEvent& event)
 236 {
 237     if ( !m_renderer )
 238     {
 239         event.Skip();
 240
 241         return;
 242     }
 243
 244     DoDrawBackground(*event.GetDC());
 245
 246     // if we have both scrollbars, we also have a square in the corner between
 247     // them which we must paint
 248     if ( m_scrollbarVert && m_scrollbarHorz )
 249     {
 250         wxSize size = GetSize();
 251         wxRect rectClient = GetClientRect(),
 252                rectBorder = m_renderer->GetBorderDimensions(GetBorder());
 253
 254         wxRect rectCorner;
 255         rectCorner.x = rectClient.GetRight() + 1;
 256         rectCorner.y = rectClient.GetBottom() + 1;
 257         rectCorner.SetRight(size.x - rectBorder.width);
 258         rectCorner.SetBottom(size.y - rectBorder.height);
 259
 260         if ( GetUpdateRegion().Contains(rectCorner) )
 261         {
 262             m_renderer->DrawScrollCorner(*event.GetDC(), rectCorner);
 263         }
 264     }
 265 }
 266
 267 bool wxWindow::DoDrawBackground(wxDC& dc)
 268 {
 269     wxRect rect;
 270
 271     wxSize size = GetSize();  // Why not GetClientSize() ?
 272     rect.x = 0;
 273     rect.y = 0;
 274     rect.width = size.x;
 275     rect.height = size.y;
 276
 277     wxWindow * const parent = GetParent();
 278     if ( HasTransparentBackground() && parent && parent->ProvidesBackground() )
 279     {
 280         wxASSERT( !IsTopLevel() );
 281
 282         wxPoint pos = GetPosition();
 283
 284         AdjustForParentClientOrigin( pos.x, pos.y, 0 );
 285
 286         // Adjust DC logical origin
 287         wxCoord org_x, org_y, x, y;
 288         dc.GetLogicalOrigin( &org_x, &org_y );
 289         x = org_x + pos.x;
 290         y = org_y + pos.y;
 291         dc.SetLogicalOrigin( x, y );
 292
 293         // Adjust draw rect
 294         rect.x = pos.x;
 295         rect.y = pos.y;
 296
 297         // Let parent draw the background
 298         parent->EraseBackground( dc, rect );
 299
 300         // Restore DC logical origin
 301         dc.SetLogicalOrigin( org_x, org_y );
 302     }
 303     else
 304     {
 305         // Draw background ouselves
 306         EraseBackground( dc, rect );
 307     }
 308
 309     return TRUE;
 310 }
 311
 312 void wxWindow::EraseBackground(wxDC& dc, const wxRect& rect)
 313 {
 314     if ( GetBackgroundBitmap().Ok() )
 315     {
 316         // Get the bitmap and the flags
 317         int alignment;
 318         wxStretch stretch;
 319         wxBitmap bmp = GetBackgroundBitmap(&alignment, &stretch);
 320         wxControlRenderer::DrawBitmap(dc, bmp, rect, alignment, stretch);
 321     }
 322     else
 323     {
 324         // Just fill it with bg colour if no bitmap
 325
 326         m_renderer->DrawBackground(dc, wxTHEME_BG_COLOUR(this),
 327                                    rect, GetStateFlags());
 328     }
 329 }
 330
 331 void wxWindow::DoDrawBorder(wxDC& dc, const wxRect& rect)
 332 {
 333     // draw outline unless the update region is enitrely inside it in which
 334     // case we don't need to do it
 335 #if 0 // doesn't seem to work, why?
 336     if ( wxRegion(rect).Contains(GetUpdateRegion().GetBox()) != wxInRegion )
 337 #endif
 338     {
 339         m_renderer->DrawBorder(dc, GetBorder(), rect, GetStateFlags());
 340     }
 341 }
 342
 343 void wxWindow::DoDraw(wxControlRenderer *renderer)
 344 {
 345 }
 346
 347 void wxWindow::Refresh(bool eraseBackground, const wxRect *rectClient)
 348 {
 349     wxRect rectWin;
 350     wxPoint pt = GetClientAreaOrigin();
 351
 352     wxSize size = GetClientSize();
 353
 354     if ( rectClient )
 355     {
 356         rectWin = *rectClient;
 357
 358         // don't refresh anything beyond the client area (scrollbars for
 359         // example)
 360         if ( rectWin.GetRight() > size.x )
 361             rectWin.SetRight(size.x);
 362         if ( rectWin.GetBottom() > size.y )
 363             rectWin.SetBottom(size.y);
 364
 365         rectWin.Offset(pt);
 366     }
 367     else // refresh the entire client area
 368     {
 369         rectWin.x = pt.x;
 370         rectWin.y = pt.y;
 371         rectWin.width = size.x;
 372         rectWin.height = size.y;
 373     }
 374
 375     // debugging helper
 376 #ifdef WXDEBUG_REFRESH
 377     static bool s_refreshDebug = FALSE;
 378     if ( s_refreshDebug )
 379     {
 380         wxWindowDC dc(this);
 381         dc.SetBrush(*wxCYAN_BRUSH);
 382         dc.SetPen(*wxTRANSPARENT_PEN);
 383         dc.DrawRectangle(rectWin);
 384
 385         // under Unix we use "--sync" X option for this
 386         #if defined(__WXMSW__) && !defined(__WXMICROWIN__)
 387             ::GdiFlush();
 388             ::Sleep(200);
 389         #endif // __WXMSW__
 390     }
 391 #endif // WXDEBUG_REFRESH
 392
 393     wxWindowNative::Refresh(eraseBackground, &rectWin);
 394 }
 395
 396 // ----------------------------------------------------------------------------
 397 // state flags
 398 // ----------------------------------------------------------------------------
 399
 400 bool wxWindow::Enable(bool enable)
 401 {
 402     if ( !wxWindowNative::Enable(enable) )
 403         return FALSE;
 404
 405     // disabled window can't keep focus
 406     if ( FindFocus() == this && GetParent() != NULL )
 407     {
 408         GetParent()->SetFocus();
 409     }
 410
 411     if ( m_renderer )
 412     {
 413         // a window with renderer is drawn by ourselves and it has to be
 414         // refreshed to reflect its new status
 415         Refresh();
 416     }
 417
 418     return TRUE;
 419 }
 420
 421 bool wxWindow::IsFocused() const
 422 {
 423     wxWindow *self = wxConstCast(this, wxWindow);
 424     return self->FindFocus() == self;
 425 }
 426
 427 bool wxWindow::IsPressed() const
 428 {
 429     return FALSE;
 430 }
 431
 432 bool wxWindow::IsDefault() const
 433 {
 434     return FALSE;
 435 }
 436
 437 bool wxWindow::IsCurrent() const
 438 {
 439     return m_isCurrent;
 440 }
 441
 442 bool wxWindow::SetCurrent(bool doit)
 443 {
 444     if ( doit == m_isCurrent )
 445         return FALSE;
 446
 447     m_isCurrent = doit;
 448
 449     if ( CanBeHighlighted() )
 450         Refresh();
 451
 452     return TRUE;
 453 }
 454
 455 int wxWindow::GetStateFlags() const
 456 {
 457     int flags = 0;
 458     if ( !IsEnabled() )
 459         flags |= wxCONTROL_DISABLED;
 460
 461     // the following states are only possible if our application is active - if
 462     // it is not, even our default/focused controls shouldn't appear as such
 463     if ( wxTheApp->IsActive() )
 464     {
 465         if ( IsCurrent() )
 466             flags |= wxCONTROL_CURRENT;
 467         if ( IsFocused() )
 468             flags |= wxCONTROL_FOCUSED;
 469         if ( IsPressed() )
 470             flags |= wxCONTROL_PRESSED;
 471         if ( IsDefault() )
 472             flags |= wxCONTROL_ISDEFAULT;
 473     }
 474
 475     return flags;
 476 }
 477
 478 // ----------------------------------------------------------------------------
 479 // size
 480 // ----------------------------------------------------------------------------
 481
 482 void wxWindow::OnSize(wxSizeEvent& event)
 483 {
 484     event.Skip();
 485
 486     if ( m_scrollbarVert || m_scrollbarHorz )
 487     {
 488         PositionScrollbars();
 489     }
 490
 491 #if 0   // ndef __WXMSW__
 492     // Refresh the area (strip) previously occupied by the border
 493
 494     if (HasFlag( wxNO_FULL_REPAINT_ON_RESIZE ) && IsShown())
 495     {
 496         // This code assumes that wxSizeEvent.GetSize() returns
 497         // the area of the entire window, not just the client
 498         // area.
 499         wxSize newSize = event.GetSize();
 500
 501         if (m_oldSize.x == -1 && m_oldSize.y == -1)
 502         {
 503             m_oldSize = newSize;
 504             return;
 505         }
 506
 507         if (HasFlag( wxSIMPLE_BORDER ))
 508         {
 509             if (newSize.y > m_oldSize.y)
 510             {
 511                 wxRect rect;
 512                 rect.x = 0;
 513                 rect.width = m_oldSize.x;
 514                 rect.y = m_oldSize.y-2;
 515                 rect.height = 1;
 516                 Refresh( TRUE, &rect );
 517             }
 518             else if (newSize.y < m_oldSize.y)
 519             {
 520                 wxRect rect;
 521                 rect.y = newSize.y;
 522                 rect.x = 0;
 523                 rect.height = 1;
 524                 rect.width = newSize.x;
 525                 wxWindowNative::Refresh( TRUE, &rect );
 526             }
 527
 528             if (newSize.x > m_oldSize.x)
 529             {
 530                 wxRect rect;
 531                 rect.y = 0;
 532                 rect.height = m_oldSize.y;
 533                 rect.x = m_oldSize.x-2;
 534                 rect.width = 1;
 535                 Refresh( TRUE, &rect );
 536             }
 537             else if (newSize.x < m_oldSize.x)
 538             {
 539                 wxRect rect;
 540                 rect.x = newSize.x;
 541                 rect.y = 0;
 542                 rect.width = 1;
 543                 rect.height = newSize.y;
 544                 wxWindowNative::Refresh( TRUE, &rect );
 545             }
 546         }
 547         else
 548         if (HasFlag( wxSUNKEN_BORDER ) || HasFlag( wxRAISED_BORDER ))
 549         {
 550             if (newSize.y > m_oldSize.y)
 551             {
 552                 wxRect rect;
 553                 rect.x = 0;
 554                 rect.width = m_oldSize.x;
 555                 rect.y = m_oldSize.y-4;
 556                 rect.height = 2;
 557                 Refresh( TRUE, &rect );
 558             }
 559             else if (newSize.y < m_oldSize.y)
 560             {
 561                 wxRect rect;
 562                 rect.y = newSize.y;
 563                 rect.x = 0;
 564                 rect.height = 2;
 565                 rect.width = newSize.x;
 566                 wxWindowNative::Refresh( TRUE, &rect );
 567             }
 568
 569             if (newSize.x > m_oldSize.x)
 570             {
 571                 wxRect rect;
 572                 rect.y = 0;
 573                 rect.height = m_oldSize.y;
 574                 rect.x = m_oldSize.x-4;
 575                 rect.width = 2;
 576                 Refresh( TRUE, &rect );
 577             }
 578             else if (newSize.x < m_oldSize.x)
 579             {
 580                 wxRect rect;
 581                 rect.x = newSize.x;
 582                 rect.y = 0;
 583                 rect.width = 2;
 584                 rect.height = newSize.y;
 585                 wxWindowNative::Refresh( TRUE, &rect );
 586             }
 587         }
 588
 589         m_oldSize = newSize;
 590     }
 591 #endif
 592 }
 593
 594 wxSize wxWindow::DoGetBestSize() const
 595 {
 596     return AdjustSize(DoGetBestClientSize());
 597 }
 598
 599 wxSize wxWindow::DoGetBestClientSize() const
 600 {
 601     return wxWindowNative::DoGetBestSize();
 602 }
 603
 604 wxSize wxWindow::AdjustSize(const wxSize& size) const
 605 {
 606     wxSize sz = size;
 607     if ( m_renderer )
 608         m_renderer->AdjustSize(&sz, this);
 609     return sz;
 610 }
 611
 612 wxPoint wxWindow::GetClientAreaOrigin() const
 613 {
 614     wxPoint pt = wxWindowBase::GetClientAreaOrigin();
 615
 616 #if wxUSE_TWO_WINDOWS
 617 #else
 618     if ( m_renderer )
 619         pt += m_renderer->GetBorderDimensions(GetBorder()).GetPosition();
 620 #endif
 621
 622     return pt;
 623 }
 624
 625 void wxWindow::DoGetClientSize(int *width, int *height) const
 626 {
 627     // if it is a native window, we assume it handles the scrollbars itself
 628     // too - and if it doesn't, there is not much we can do
 629     if ( !m_renderer )
 630     {
 631         wxWindowNative::DoGetClientSize(width, height);
 632
 633         return;
 634     }
 635
 636     int w, h;
 637     wxWindowNative::DoGetClientSize(&w, &h);
 638
 639     // we assume that the scrollbars are positioned correctly (by a previous
 640     // call to PositionScrollbars()) here
 641
 642     wxRect rectBorder;
 643     if ( m_renderer )
 644         rectBorder = m_renderer->GetBorderDimensions(GetBorder());
 645
 646     bool inside = m_renderer->AreScrollbarsInsideBorder();
 647
 648     if ( width )
 649     {
 650         // in any case, take account of the scrollbar
 651         if ( m_scrollbarVert )
 652             w -= m_scrollbarVert->GetSize().x;
 653
 654         // if we don't have scrollbar or if it is outside the border (and not
 655         // blended into it), take account of the right border as well
 656         if ( !m_scrollbarVert || inside )
 657             w -= rectBorder.width;
 658
 659         // and always account for the left border
 660         *width = w - rectBorder.x;
 661
 662         // we shouldn't return invalid width
 663         if ( *width < 0 )
 664             *width = 0;
 665     }
 666
 667     if ( height )
 668     {
 669         if ( m_scrollbarHorz )
 670             h -= m_scrollbarHorz->GetSize().y;
 671
 672         if ( !m_scrollbarHorz || inside )
 673             h -= rectBorder.height;
 674
 675         *height = h - rectBorder.y;
 676
 677         // we shouldn't return invalid height
 678         if ( *height < 0 )
 679             *height = 0;
 680     }
 681 }
 682
 683 void wxWindow::DoSetClientSize(int width, int height)
 684 {
 685     // take into account the borders
 686     wxRect rectBorder = m_renderer->GetBorderDimensions(GetBorder());
 687     width += rectBorder.x;
 688     height += rectBorder.y;
 689
 690     // and the scrollbars (as they may be offset into the border, use the
 691     // scrollbar position, not size - this supposes that PositionScrollbars()
 692     // had been called before)
 693     bool inside = m_renderer->AreScrollbarsInsideBorder();
 694     wxSize size = GetSize();
 695     if ( m_scrollbarVert )
 696         width += size.x - m_scrollbarVert->GetPosition().x;
 697     if ( !m_scrollbarVert || inside )
 698         width += rectBorder.width;
 699
 700     if ( m_scrollbarHorz )
 701         height += size.y - m_scrollbarHorz->GetPosition().y;
 702     if ( !m_scrollbarHorz || inside )
 703         height += rectBorder.height;
 704
 705     wxWindowNative::DoSetClientSize(width, height);
 706 }
 707
 708 wxHitTest wxWindow::DoHitTest(wxCoord x, wxCoord y) const
 709 {
 710     wxHitTest ht = wxWindowNative::DoHitTest(x, y);
 711     if ( ht == wxHT_WINDOW_INSIDE )
 712     {
 713         if ( m_scrollbarVert && x >= m_scrollbarVert->GetPosition().x )
 714         {
 715             // it can still be changed below because it may also be the corner
 716             ht = wxHT_WINDOW_VERT_SCROLLBAR;
 717         }
 718
 719         if ( m_scrollbarHorz && y >= m_scrollbarHorz->GetPosition().y )
 720         {
 721             ht = ht == wxHT_WINDOW_VERT_SCROLLBAR ? wxHT_WINDOW_CORNER
 722                                                   : wxHT_WINDOW_HORZ_SCROLLBAR;
 723         }
 724     }
 725
 726     return ht;
 727 }
 728
 729 // ----------------------------------------------------------------------------
 730 // scrolling: we implement it entirely ourselves except for ScrollWindow()
 731 // function which is supposed to be (efficiently) implemented by the native
 732 // window class
 733 // ----------------------------------------------------------------------------
 734
 735 void wxWindow::RefreshScrollbars()
 736 {
 737     if ( m_scrollbarHorz )
 738         m_scrollbarHorz->Refresh();
 739
 740     if ( m_scrollbarVert )
 741         m_scrollbarVert->Refresh();
 742 }
 743
 744 void wxWindow::PositionScrollbars()
 745 {
 746     // do not use GetClientSize/Rect as it relies on the scrollbars being
 747     // correctly positioned
 748
 749     wxSize size = GetSize();
 750     wxBorder border = GetBorder();
 751     wxRect rectBorder = m_renderer->GetBorderDimensions(border);
 752     bool inside = m_renderer->AreScrollbarsInsideBorder();
 753
 754     int height = m_scrollbarHorz ? m_scrollbarHorz->GetSize().y : 0;
 755     int width = m_scrollbarVert ? m_scrollbarVert->GetSize().x : 0;
 756
 757     wxRect rectBar;
 758     if ( m_scrollbarVert )
 759     {
 760         rectBar.x = size.x - width;
 761         if ( inside )
 762            rectBar.x -= rectBorder.width;
 763         rectBar.width = width;
 764         rectBar.y = 0;
 765         if ( inside )
 766             rectBar.y += rectBorder.y;
 767         rectBar.height = size.y - height;
 768         if ( inside )
 769             rectBar.height -= rectBorder.y + rectBorder.height;
 770
 771         m_scrollbarVert->SetSize(rectBar, wxSIZE_NO_ADJUSTMENTS);
 772     }
 773
 774     if ( m_scrollbarHorz )
 775     {
 776         rectBar.y = size.y - height;
 777         if ( inside )
 778             rectBar.y -= rectBorder.height;
 779         rectBar.height = height;
 780         rectBar.x = 0;
 781         if ( inside )
 782             rectBar.x += rectBorder.x;
 783         rectBar.width = size.x - width;
 784         if ( inside )
 785             rectBar.width -= rectBorder.x + rectBorder.width;
 786
 787         m_scrollbarHorz->SetSize(rectBar, wxSIZE_NO_ADJUSTMENTS);
 788     }
 789
 790     RefreshScrollbars();
 791 }
 792
 793 void wxWindow::SetScrollbar(int orient,
 794                             int pos,
 795                             int pageSize,
 796                             int range,
 797                             bool refresh)
 798 {
 799     wxASSERT_MSG( pageSize <= range,
 800                     _T("page size can't be greater than range") );
 801
 802     bool hasClientSizeChanged = FALSE;
 803     wxScrollBar *scrollbar = GetScrollbar(orient);
 804     if ( range && (pageSize < range) )
 805     {
 806         if ( !scrollbar )
 807         {
 808             // create it
 809 #if wxUSE_TWO_WINDOWS
 810             SetInsertIntoMain( TRUE );
 811 #endif
 812             scrollbar = new wxScrollBar(this, -1,
 813                                         wxDefaultPosition, wxDefaultSize,
 814                                         orient & wxVERTICAL ? wxSB_VERTICAL
 815                                                             : wxSB_HORIZONTAL);
 816 #if wxUSE_TWO_WINDOWS
 817             SetInsertIntoMain( FALSE );
 818 #endif
 819             if ( orient & wxVERTICAL )
 820                 m_scrollbarVert = scrollbar;
 821             else
 822                 m_scrollbarHorz = scrollbar;
 823
 824             // the client area diminished as we created a scrollbar
 825             hasClientSizeChanged = TRUE;
 826
 827             PositionScrollbars();
 828         }
 829         else if ( GetWindowStyle() & wxALWAYS_SHOW_SB )
 830         {
 831             // we might have disabled it before
 832             scrollbar->Enable();
 833         }
 834
 835         scrollbar->SetScrollbar(pos, pageSize, range, pageSize, refresh);
 836     }
 837     else // no range means no scrollbar
 838     {
 839         if ( scrollbar )
 840         {
 841             // wxALWAYS_SHOW_SB only applies to the vertical scrollbar
 842             if ( (orient & wxVERTICAL) && (GetWindowStyle() & wxALWAYS_SHOW_SB) )
 843             {
 844                 // just disable the scrollbar
 845                 scrollbar->SetScrollbar(pos, pageSize, range, pageSize, refresh);
 846                 scrollbar->Disable();
 847             }
 848             else // really remove the scrollbar
 849             {
 850                 delete scrollbar;
 851
 852                 if ( orient & wxVERTICAL )
 853                     m_scrollbarVert = NULL;
 854                 else
 855                     m_scrollbarHorz = NULL;
 856
 857                 // the client area increased as we removed a scrollbar
 858                 hasClientSizeChanged = TRUE;
 859
 860                 // the size of the remaining scrollbar must be adjusted
 861                 if ( m_scrollbarHorz || m_scrollbarVert )
 862                 {
 863                     PositionScrollbars();
 864                 }
 865             }
 866         }
 867     }
 868
 869     // give the window a chance to relayout
 870     if ( hasClientSizeChanged )
 871     {
 872 #if wxUSE_TWO_WINDOWS
 873         wxWindowNative::SetSize( GetSize() );
 874 #else
 875         wxSizeEvent event(GetSize());
 876         (void)GetEventHandler()->ProcessEvent(event);
 877 #endif
 878     }
 879 }
 880
 881 void wxWindow::SetScrollPos(int orient, int pos, bool refresh)
 882 {
 883     wxScrollBar *scrollbar = GetScrollbar(orient);
 884     wxCHECK_RET( scrollbar, _T("no scrollbar to set position for") );
 885
 886     scrollbar->SetThumbPosition(pos);
 887
 888     // VZ: I think we can safely ignore this as we always refresh it
 889     //     automatically whenever the value chanegs
 890 #if 0
 891     if ( refresh )
 892         Refresh();
 893 #endif
 894 }
 895
 896 int wxWindow::GetScrollPos(int orient) const
 897 {
 898     wxScrollBar *scrollbar = GetScrollbar(orient);
 899     return scrollbar ? scrollbar->GetThumbPosition() : 0;
 900 }
 901
 902 int wxWindow::GetScrollThumb(int orient) const
 903 {
 904     wxScrollBar *scrollbar = GetScrollbar(orient);
 905     return scrollbar ? scrollbar->GetThumbSize() : 0;
 906 }
 907
 908 int wxWindow::GetScrollRange(int orient) const
 909 {
 910     wxScrollBar *scrollbar = GetScrollbar(orient);
 911     return scrollbar ? scrollbar->GetRange() : 0;
 912 }
 913
 914 void wxWindow::ScrollWindow(int dx, int dy, const wxRect *rect)
 915 {
 916     // use native scrolling when available and do it in generic way
 917     // otherwise:
 918 #ifdef __WXX11__
 919
 920     wxWindowNative::ScrollWindow(dx, dy, rect);
 921
 922 #else // !wxX11
 923
 924     // before scrolling it, ensure that we don't have any unpainted areas
 925     Update();
 926
 927     wxRect r;
 928
 929     if ( dx )
 930     {
 931         r = ScrollNoRefresh(dx, 0, rect);
 932         Refresh(TRUE /* erase bkgnd */, &r);
 933     }
 934
 935     if ( dy )
 936     {
 937         r = ScrollNoRefresh(0, dy, rect);
 938         Refresh(TRUE /* erase bkgnd */, &r);
 939     }
 940
 941     // scroll children accordingly:
 942     wxPoint offset(dx, dy);
 943
 944     for (wxWindowList::Node *node = GetChildren().GetFirst();
 945          node; node = node->GetNext())
 946     {
 947         wxWindow *child = node->GetData();
 948         if ( child == m_scrollbarVert || child == m_scrollbarHorz )
 949             continue;
 950
 951         // VS: Scrolling children has non-trivial semantics. If rect=NULL then
 952         //     it is easy: we scroll all children. Otherwise it gets
 953         //     complicated:
 954         //       1. if scrolling in one direction only, scroll only
 955         //          those children that intersect shaft defined by the rectangle
 956         //          and scrolling direction
 957         //       2. if scrolling in both axes, scroll all children
 958
 959         if ( rect && (dx * dy == 0 /* moving in only one of x, y axis */) )
 960         {
 961             wxRect childRect = child->GetRect();
 962             if ( dx == 0 && (childRect.GetLeft() <= rect->GetRight() ||
 963                              childRect.GetRight() >= rect->GetLeft()) )
 964             {
 965                 child->Move(child->GetPosition() + offset);
 966             }
 967             else if ( dy == 0 && (childRect.GetTop() <= rect->GetBottom() ||
 968                                   childRect.GetBottom() >= rect->GetTop()) )
 969             {
 970                 child->Move(child->GetPosition() + offset);
 971             }
 972         }
 973         else
 974         {
 975             child->Move(child->GetPosition() + offset);
 976         }
 977     }
 978 #endif // wxX11/!wxX11
 979 }
 980
 981 wxRect wxWindow::ScrollNoRefresh(int dx, int dy, const wxRect *rectTotal)
 982 {
 983     wxASSERT_MSG( !dx || !dy, _T("can't be used for diag scrolling") );
 984
 985     // the rect to refresh (which we will calculate)
 986     wxRect rect;
 987
 988     if ( !dx && !dy )
 989     {
 990         // nothing to do
 991         return rect;
 992     }
 993
 994     // calculate the part of the window which we can just redraw in the new
 995     // location
 996     wxSize sizeTotal = rectTotal ? rectTotal->GetSize() : GetClientSize();
 997
 998     wxLogTrace(_T("scroll"), _T("rect is %dx%d, scroll by %d, %d"),
 999                sizeTotal.x, sizeTotal.y, dx, dy);
1000
1001     // the initial and end point of the region we move in client coords
1002     wxPoint ptSource, ptDest;
1003     if ( rectTotal )
1004     {
1005         ptSource = rectTotal->GetPosition();
1006         ptDest = rectTotal->GetPosition();
1007     }
1008
1009     // the size of this region
1010     wxSize size;
1011     size.x = sizeTotal.x - abs(dx);
1012     size.y = sizeTotal.y - abs(dy);
1013     if ( size.x <= 0 || size.y <= 0 )
1014     {
1015         // just redraw everything as nothing of the displayed image will stay
1016         wxLogTrace(_T("scroll"), _T("refreshing everything"));
1017
1018         rect = rectTotal ? *rectTotal : wxRect(0, 0, sizeTotal.x, sizeTotal.y);
1019     }
1020     else // move the part which doesn't change to the new location
1021     {
1022         // note that when we scroll the canvas in some direction we move the
1023         // block which doesn't need to be refreshed in the opposite direction
1024
1025         if ( dx < 0 )
1026         {
1027             // scroll to the right, move to the left
1028             ptSource.x -= dx;
1029         }
1030         else
1031         {
1032             // scroll to the left, move to the right
1033             ptDest.x += dx;
1034         }
1035
1036         if ( dy < 0 )
1037         {
1038             // scroll down, move up
1039             ptSource.y -= dy;
1040         }
1041         else
1042         {
1043             // scroll up, move down
1044             ptDest.y += dy;
1045         }
1046
1047 #if wxUSE_CARET
1048         // we need to hide the caret before moving or it will erase itself at
1049         // the wrong (old) location
1050         wxCaret *caret = GetCaret();
1051         if ( caret )
1052             caret->Hide();
1053 #endif // wxUSE_CARET
1054
1055         // do move
1056         wxClientDC dc(this);
1057         wxBitmap bmp(size.x, size.y);
1058         wxMemoryDC dcMem;
1059         dcMem.SelectObject(bmp);
1060
1061         dcMem.Blit(wxPoint(0, 0), size, &dc, ptSource
1062 #if defined(__WXGTK__) && !defined(wxHAS_WORKING_GTK_DC_BLIT)
1063                 + GetClientAreaOrigin()
1064 #endif // broken wxGTK wxDC::Blit
1065                   );
1066         dc.Blit(ptDest, size, &dcMem, wxPoint(0, 0));
1067
1068         wxLogTrace(_T("scroll"),
1069                    _T("Blit: (%d, %d) of size %dx%d -> (%d, %d)"),
1070                    ptSource.x, ptSource.y,
1071                    size.x, size.y,
1072                    ptDest.x, ptDest.y);
1073
1074         // and now repaint the uncovered area
1075
1076         // FIXME: We repaint the intersection of these rectangles twice - is
1077         //        it bad? I don't think so as it is rare to scroll the window
1078         //        diagonally anyhow and so adding extra logic to compute
1079         //        rectangle intersection is probably not worth the effort
1080
1081         rect.x = ptSource.x;
1082         rect.y = ptSource.y;
1083
1084         if ( dx )
1085         {
1086             if ( dx < 0 )
1087             {
1088                 // refresh the area along the right border
1089                 rect.x += size.x + dx;
1090                 rect.width = -dx;
1091             }
1092             else
1093             {
1094                 // refresh the area along the left border
1095                 rect.width = dx;
1096             }
1097
1098             rect.height = sizeTotal.y;
1099
1100             wxLogTrace(_T("scroll"), _T("refreshing (%d, %d)-(%d, %d)"),
1101                        rect.x, rect.y,
1102                        rect.GetRight() + 1, rect.GetBottom() + 1);
1103         }
1104
1105         if ( dy )
1106         {
1107             if ( dy < 0 )
1108             {
1109                 // refresh the area along the bottom border
1110                 rect.y += size.y + dy;
1111                 rect.height = -dy;
1112             }
1113             else
1114             {
1115                 // refresh the area along the top border
1116                 rect.height = dy;
1117             }
1118
1119             rect.width = sizeTotal.x;
1120
1121             wxLogTrace(_T("scroll"), _T("refreshing (%d, %d)-(%d, %d)"),
1122                        rect.x, rect.y,
1123                        rect.GetRight() + 1, rect.GetBottom() + 1);
1124         }
1125
1126 #if wxUSE_CARET
1127         if ( caret )
1128             caret->Show();
1129 #endif // wxUSE_CARET
1130     }
1131
1132     return rect;
1133 }
1134
1135 // ----------------------------------------------------------------------------
1136 // accelerators and menu hot keys
1137 // ----------------------------------------------------------------------------
1138
1139 #if wxUSE_MENUS
1140     // the last window over which Alt was pressed (used by OnKeyUp)
1141     wxWindow *wxWindow::ms_winLastAltPress = NULL;
1142 #endif // wxUSE_MENUS
1143
1144 #if wxUSE_ACCEL || wxUSE_MENUS
1145
1146 void wxWindow::OnKeyDown(wxKeyEvent& event)
1147 {
1148 #if wxUSE_MENUS
1149     int key = event.GetKeyCode();
1150     if ( !event.ControlDown() && (key == WXK_MENU || key == WXK_F10) )
1151     {
1152         ms_winLastAltPress = this;
1153
1154         // it can't be an accel anyhow
1155         return;
1156     }
1157
1158     ms_winLastAltPress = NULL;
1159 #endif // wxUSE_MENUS
1160
1161 #if wxUSE_ACCEL
1162     for ( wxWindow *win = this; win; win = win->GetParent() )
1163     {
1164         int command = win->GetAcceleratorTable()->GetCommand(event);
1165         if ( command != -1 )
1166         {
1167             wxCommandEvent eventCmd(wxEVT_COMMAND_MENU_SELECTED, command);
1168             if ( win->GetEventHandler()->ProcessEvent(eventCmd) )
1169             {
1170                 // skip "event.Skip()" below
1171                 return;
1172             }
1173         }
1174
1175         if ( win->IsTopLevel() )
1176         {
1177             // try the frame menu bar
1178 #if wxUSE_MENUS
1179             wxFrame *frame = wxDynamicCast(win, wxFrame);
1180             if ( frame )
1181             {
1182                 wxMenuBar *menubar = frame->GetMenuBar();
1183                 if ( menubar && menubar->ProcessAccelEvent(event) )
1184                 {
1185                     // skip "event.Skip()" below
1186                     return;
1187                 }
1188             }
1189 #endif // wxUSE_MENUS
1190
1191             // if it wasn't in a menu, try to find a button
1192             if ( command != -1 )
1193             {
1194                 wxWindow* child = win->FindWindow(command);
1195                 if ( child && wxDynamicCast(child, wxButton) )
1196                 {
1197                     wxCommandEvent eventCmd(wxEVT_COMMAND_BUTTON_CLICKED, command);
1198                     eventCmd.SetEventObject(child);
1199                     if ( child->GetEventHandler()->ProcessEvent(eventCmd) )
1200                     {
1201                         // skip "event.Skip()" below
1202                         return;
1203                     }
1204                 }
1205             }
1206
1207             // don't propagate accels from the child frame to the parent one
1208             break;
1209         }
1210     }
1211 #endif // wxUSE_ACCEL
1212
1213     event.Skip();
1214 }
1215
1216 #endif // wxUSE_ACCEL
1217
1218 #if wxUSE_MENUS
1219
1220 wxMenuBar *wxWindow::GetParentFrameMenuBar() const
1221 {
1222     for ( const wxWindow *win = this; win; win = win->GetParent() )
1223     {
1224         if ( win->IsTopLevel() )
1225         {
1226             wxFrame *frame = wxDynamicCast(win, wxFrame);
1227             if ( frame )
1228             {
1229                 return frame->GetMenuBar();
1230             }
1231
1232             // don't look further - we don't want to return the menubar of the
1233             // parent frame
1234             break;
1235         }
1236     }
1237
1238     return NULL;
1239 }
1240
1241 void wxWindow::OnChar(wxKeyEvent& event)
1242 {
1243     if ( event.AltDown() && !event.ControlDown() )
1244     {
1245         int key = event.GetKeyCode();
1246
1247         wxMenuBar *menubar = GetParentFrameMenuBar();
1248         if ( menubar )
1249         {
1250             int item = menubar->FindNextItemForAccel(-1, key);
1251             if ( item != -1 )
1252             {
1253                 menubar->PopupMenu((size_t)item);
1254
1255                 // skip "event.Skip()" below
1256                 return;
1257             }
1258         }
1259     }
1260
1261     event.Skip();
1262 }
1263
1264 void wxWindow::OnKeyUp(wxKeyEvent& event)
1265 {
1266     int key = event.GetKeyCode();
1267     if ( !event.HasModifiers() && (key == WXK_MENU || key == WXK_F10) )
1268     {
1269         // only process Alt release specially if there were no other key
1270         // presses since Alt had been pressed and if both events happened in
1271         // the same window
1272         if ( ms_winLastAltPress == this )
1273         {
1274             wxMenuBar *menubar = GetParentFrameMenuBar();
1275             if ( menubar && this != menubar )
1276             {
1277                 menubar->SelectMenu(0);
1278             }
1279         }
1280     }
1281     else
1282     {
1283         event.Skip();
1284     }
1285
1286     // in any case reset it
1287     ms_winLastAltPress = NULL;
1288 }
1289
1290 #endif // wxUSE_MENUS
1291
1292 // ----------------------------------------------------------------------------
1293 // MSW-specific section
1294 // ----------------------------------------------------------------------------
1295
1296 #ifdef __WXMSW__
1297
1298 #include "wx/msw/private.h"
1299
1300 long wxWindow::MSWWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
1301 {
1302     if ( message == WM_NCHITTEST )
1303     {
1304         // the windows which contain the other windows should let the mouse
1305         // events through, otherwise a window inside a static box would
1306         // never get any events at all
1307         if ( IsStaticBox() )
1308         {
1309             return HTTRANSPARENT;
1310         }
1311     }
1312
1313     return wxWindowNative::MSWWindowProc(message, wParam, lParam);
1314 }
1315
1316 #endif // __WXMSW__
1317