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 licence
  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     // Refresh all sub controls if any.
 396     wxWindowList::Node *node = GetChildren().GetFirst();
 397     while ( node )
 398     {
 399         wxWindow *win = node->GetData();
 400         // Only refresh sub controls when it is visible
 401         // and when it is in the update region.
 402         if(win->IsShown() && wxRegion(rectWin).Contains(win->GetRect()) != wxOutRegion)
 403             win->Refresh(eraseBackground, &rectWin);
 404
 405         node = node->GetNext();
 406     }
 407 }
 408
 409 // ----------------------------------------------------------------------------
 410 // state flags
 411 // ----------------------------------------------------------------------------
 412
 413 bool wxWindow::Enable(bool enable)
 414 {
 415     if ( !wxWindowNative::Enable(enable) )
 416         return FALSE;
 417
 418     // disabled window can't keep focus
 419     if ( FindFocus() == this && GetParent() != NULL )
 420     {
 421         GetParent()->SetFocus();
 422     }
 423
 424     if ( m_renderer )
 425     {
 426         // a window with renderer is drawn by ourselves and it has to be
 427         // refreshed to reflect its new status
 428         Refresh();
 429     }
 430
 431     return TRUE;
 432 }
 433
 434 bool wxWindow::IsFocused() const
 435 {
 436     wxWindow *self = wxConstCast(this, wxWindow);
 437     return self->FindFocus() == self;
 438 }
 439
 440 bool wxWindow::IsPressed() const
 441 {
 442     return FALSE;
 443 }
 444
 445 bool wxWindow::IsDefault() const
 446 {
 447     return FALSE;
 448 }
 449
 450 bool wxWindow::IsCurrent() const
 451 {
 452     return m_isCurrent;
 453 }
 454
 455 bool wxWindow::SetCurrent(bool doit)
 456 {
 457     if ( doit == m_isCurrent )
 458         return FALSE;
 459
 460     m_isCurrent = doit;
 461
 462     if ( CanBeHighlighted() )
 463         Refresh();
 464
 465     return TRUE;
 466 }
 467
 468 int wxWindow::GetStateFlags() const
 469 {
 470     int flags = 0;
 471     if ( !IsEnabled() )
 472         flags |= wxCONTROL_DISABLED;
 473
 474     // the following states are only possible if our application is active - if
 475     // it is not, even our default/focused controls shouldn't appear as such
 476     if ( wxTheApp->IsActive() )
 477     {
 478         if ( IsCurrent() )
 479             flags |= wxCONTROL_CURRENT;
 480         if ( IsFocused() )
 481             flags |= wxCONTROL_FOCUSED;
 482         if ( IsPressed() )
 483             flags |= wxCONTROL_PRESSED;
 484         if ( IsDefault() )
 485             flags |= wxCONTROL_ISDEFAULT;
 486     }
 487
 488     return flags;
 489 }
 490
 491 // ----------------------------------------------------------------------------
 492 // size
 493 // ----------------------------------------------------------------------------
 494
 495 void wxWindow::OnSize(wxSizeEvent& event)
 496 {
 497     event.Skip();
 498
 499     if ( m_scrollbarVert || m_scrollbarHorz )
 500     {
 501         PositionScrollbars();
 502     }
 503
 504 #if 0   // ndef __WXMSW__
 505     // Refresh the area (strip) previously occupied by the border
 506
 507     if (HasFlag( wxNO_FULL_REPAINT_ON_RESIZE ) && IsShown())
 508     {
 509         // This code assumes that wxSizeEvent.GetSize() returns
 510         // the area of the entire window, not just the client
 511         // area.
 512         wxSize newSize = event.GetSize();
 513
 514         if (m_oldSize.x == -1 && m_oldSize.y == -1)
 515         {
 516             m_oldSize = newSize;
 517             return;
 518         }
 519
 520         if (HasFlag( wxSIMPLE_BORDER ))
 521         {
 522             if (newSize.y > m_oldSize.y)
 523             {
 524                 wxRect rect;
 525                 rect.x = 0;
 526                 rect.width = m_oldSize.x;
 527                 rect.y = m_oldSize.y-2;
 528                 rect.height = 1;
 529                 Refresh( TRUE, &rect );
 530             }
 531             else if (newSize.y < m_oldSize.y)
 532             {
 533                 wxRect rect;
 534                 rect.y = newSize.y;
 535                 rect.x = 0;
 536                 rect.height = 1;
 537                 rect.width = newSize.x;
 538                 wxWindowNative::Refresh( TRUE, &rect );
 539             }
 540
 541             if (newSize.x > m_oldSize.x)
 542             {
 543                 wxRect rect;
 544                 rect.y = 0;
 545                 rect.height = m_oldSize.y;
 546                 rect.x = m_oldSize.x-2;
 547                 rect.width = 1;
 548                 Refresh( TRUE, &rect );
 549             }
 550             else if (newSize.x < m_oldSize.x)
 551             {
 552                 wxRect rect;
 553                 rect.x = newSize.x;
 554                 rect.y = 0;
 555                 rect.width = 1;
 556                 rect.height = newSize.y;
 557                 wxWindowNative::Refresh( TRUE, &rect );
 558             }
 559         }
 560         else
 561         if (HasFlag( wxSUNKEN_BORDER ) || HasFlag( wxRAISED_BORDER ))
 562         {
 563             if (newSize.y > m_oldSize.y)
 564             {
 565                 wxRect rect;
 566                 rect.x = 0;
 567                 rect.width = m_oldSize.x;
 568                 rect.y = m_oldSize.y-4;
 569                 rect.height = 2;
 570                 Refresh( TRUE, &rect );
 571             }
 572             else if (newSize.y < m_oldSize.y)
 573             {
 574                 wxRect rect;
 575                 rect.y = newSize.y;
 576                 rect.x = 0;
 577                 rect.height = 2;
 578                 rect.width = newSize.x;
 579                 wxWindowNative::Refresh( TRUE, &rect );
 580             }
 581
 582             if (newSize.x > m_oldSize.x)
 583             {
 584                 wxRect rect;
 585                 rect.y = 0;
 586                 rect.height = m_oldSize.y;
 587                 rect.x = m_oldSize.x-4;
 588                 rect.width = 2;
 589                 Refresh( TRUE, &rect );
 590             }
 591             else if (newSize.x < m_oldSize.x)
 592             {
 593                 wxRect rect;
 594                 rect.x = newSize.x;
 595                 rect.y = 0;
 596                 rect.width = 2;
 597                 rect.height = newSize.y;
 598                 wxWindowNative::Refresh( TRUE, &rect );
 599             }
 600         }
 601
 602         m_oldSize = newSize;
 603     }
 604 #endif
 605 }
 606
 607 wxSize wxWindow::DoGetBestSize() const
 608 {
 609     return AdjustSize(DoGetBestClientSize());
 610 }
 611
 612 wxSize wxWindow::DoGetBestClientSize() const
 613 {
 614     return wxWindowNative::DoGetBestSize();
 615 }
 616
 617 wxSize wxWindow::AdjustSize(const wxSize& size) const
 618 {
 619     wxSize sz = size;
 620     if ( m_renderer )
 621         m_renderer->AdjustSize(&sz, this);
 622     return sz;
 623 }
 624
 625 wxPoint wxWindow::GetClientAreaOrigin() const
 626 {
 627     wxPoint pt = wxWindowBase::GetClientAreaOrigin();
 628
 629 #if wxUSE_TWO_WINDOWS
 630 #else
 631     if ( m_renderer )
 632         pt += m_renderer->GetBorderDimensions(GetBorder()).GetPosition();
 633 #endif
 634
 635     return pt;
 636 }
 637
 638 void wxWindow::DoGetClientSize(int *width, int *height) const
 639 {
 640     // if it is a native window, we assume it handles the scrollbars itself
 641     // too - and if it doesn't, there is not much we can do
 642     if ( !m_renderer )
 643     {
 644         wxWindowNative::DoGetClientSize(width, height);
 645
 646         return;
 647     }
 648
 649     int w, h;
 650     wxWindowNative::DoGetClientSize(&w, &h);
 651
 652     // we assume that the scrollbars are positioned correctly (by a previous
 653     // call to PositionScrollbars()) here
 654
 655     wxRect rectBorder;
 656     if ( m_renderer )
 657         rectBorder = m_renderer->GetBorderDimensions(GetBorder());
 658
 659     bool inside = m_renderer->AreScrollbarsInsideBorder();
 660
 661     if ( width )
 662     {
 663         // in any case, take account of the scrollbar
 664         if ( m_scrollbarVert )
 665             w -= m_scrollbarVert->GetSize().x;
 666
 667         // if we don't have scrollbar or if it is outside the border (and not
 668         // blended into it), take account of the right border as well
 669         if ( !m_scrollbarVert || inside )
 670             w -= rectBorder.width;
 671
 672         // and always account for the left border
 673         *width = w - rectBorder.x;
 674
 675         // we shouldn't return invalid width
 676         if ( *width < 0 )
 677             *width = 0;
 678     }
 679
 680     if ( height )
 681     {
 682         if ( m_scrollbarHorz )
 683             h -= m_scrollbarHorz->GetSize().y;
 684
 685         if ( !m_scrollbarHorz || inside )
 686             h -= rectBorder.height;
 687
 688         *height = h - rectBorder.y;
 689
 690         // we shouldn't return invalid height
 691         if ( *height < 0 )
 692             *height = 0;
 693     }
 694 }
 695
 696 void wxWindow::DoSetClientSize(int width, int height)
 697 {
 698     // take into account the borders
 699     wxRect rectBorder = m_renderer->GetBorderDimensions(GetBorder());
 700     width += rectBorder.x;
 701     height += rectBorder.y;
 702
 703     // and the scrollbars (as they may be offset into the border, use the
 704     // scrollbar position, not size - this supposes that PositionScrollbars()
 705     // had been called before)
 706     bool inside = m_renderer->AreScrollbarsInsideBorder();
 707     wxSize size = GetSize();
 708     if ( m_scrollbarVert )
 709         width += size.x - m_scrollbarVert->GetPosition().x;
 710     if ( !m_scrollbarVert || inside )
 711         width += rectBorder.width;
 712
 713     if ( m_scrollbarHorz )
 714         height += size.y - m_scrollbarHorz->GetPosition().y;
 715     if ( !m_scrollbarHorz || inside )
 716         height += rectBorder.height;
 717
 718     wxWindowNative::DoSetClientSize(width, height);
 719 }
 720
 721 wxHitTest wxWindow::DoHitTest(wxCoord x, wxCoord y) const
 722 {
 723     wxHitTest ht = wxWindowNative::DoHitTest(x, y);
 724     if ( ht == wxHT_WINDOW_INSIDE )
 725     {
 726         if ( m_scrollbarVert && x >= m_scrollbarVert->GetPosition().x )
 727         {
 728             // it can still be changed below because it may also be the corner
 729             ht = wxHT_WINDOW_VERT_SCROLLBAR;
 730         }
 731
 732         if ( m_scrollbarHorz && y >= m_scrollbarHorz->GetPosition().y )
 733         {
 734             ht = ht == wxHT_WINDOW_VERT_SCROLLBAR ? wxHT_WINDOW_CORNER
 735                                                   : wxHT_WINDOW_HORZ_SCROLLBAR;
 736         }
 737     }
 738
 739     return ht;
 740 }
 741
 742 // ----------------------------------------------------------------------------
 743 // scrolling: we implement it entirely ourselves except for ScrollWindow()
 744 // function which is supposed to be (efficiently) implemented by the native
 745 // window class
 746 // ----------------------------------------------------------------------------
 747
 748 void wxWindow::RefreshScrollbars()
 749 {
 750     if ( m_scrollbarHorz )
 751         m_scrollbarHorz->Refresh();
 752
 753     if ( m_scrollbarVert )
 754         m_scrollbarVert->Refresh();
 755 }
 756
 757 void wxWindow::PositionScrollbars()
 758 {
 759     // do not use GetClientSize/Rect as it relies on the scrollbars being
 760     // correctly positioned
 761
 762     wxSize size = GetSize();
 763     wxBorder border = GetBorder();
 764     wxRect rectBorder = m_renderer->GetBorderDimensions(border);
 765     bool inside = m_renderer->AreScrollbarsInsideBorder();
 766
 767     int height = m_scrollbarHorz ? m_scrollbarHorz->GetSize().y : 0;
 768     int width = m_scrollbarVert ? m_scrollbarVert->GetSize().x : 0;
 769
 770     wxRect rectBar;
 771     if ( m_scrollbarVert )
 772     {
 773         rectBar.x = size.x - width;
 774         if ( inside )
 775            rectBar.x -= rectBorder.width;
 776         rectBar.width = width;
 777         rectBar.y = 0;
 778         if ( inside )
 779             rectBar.y += rectBorder.y;
 780         rectBar.height = size.y - height;
 781         if ( inside )
 782             rectBar.height -= rectBorder.y + rectBorder.height;
 783
 784         m_scrollbarVert->SetSize(rectBar, wxSIZE_NO_ADJUSTMENTS);
 785     }
 786
 787     if ( m_scrollbarHorz )
 788     {
 789         rectBar.y = size.y - height;
 790         if ( inside )
 791             rectBar.y -= rectBorder.height;
 792         rectBar.height = height;
 793         rectBar.x = 0;
 794         if ( inside )
 795             rectBar.x += rectBorder.x;
 796         rectBar.width = size.x - width;
 797         if ( inside )
 798             rectBar.width -= rectBorder.x + rectBorder.width;
 799
 800         m_scrollbarHorz->SetSize(rectBar, wxSIZE_NO_ADJUSTMENTS);
 801     }
 802
 803     RefreshScrollbars();
 804 }
 805
 806 void wxWindow::SetScrollbar(int orient,
 807                             int pos,
 808                             int pageSize,
 809                             int range,
 810                             bool refresh)
 811 {
 812     wxASSERT_MSG( pageSize <= range,
 813                     _T("page size can't be greater than range") );
 814
 815     bool hasClientSizeChanged = FALSE;
 816     wxScrollBar *scrollbar = GetScrollbar(orient);
 817     if ( range && (pageSize < range) )
 818     {
 819         if ( !scrollbar )
 820         {
 821             // create it
 822 #if wxUSE_TWO_WINDOWS
 823             SetInsertIntoMain( TRUE );
 824 #endif
 825             scrollbar = new wxScrollBar(this, -1,
 826                                         wxDefaultPosition, wxDefaultSize,
 827                                         orient & wxVERTICAL ? wxSB_VERTICAL
 828                                                             : wxSB_HORIZONTAL);
 829 #if wxUSE_TWO_WINDOWS
 830             SetInsertIntoMain( FALSE );
 831 #endif
 832             if ( orient & wxVERTICAL )
 833                 m_scrollbarVert = scrollbar;
 834             else
 835                 m_scrollbarHorz = scrollbar;
 836
 837             // the client area diminished as we created a scrollbar
 838             hasClientSizeChanged = TRUE;
 839
 840             PositionScrollbars();
 841         }
 842         else if ( GetWindowStyle() & wxALWAYS_SHOW_SB )
 843         {
 844             // we might have disabled it before
 845             scrollbar->Enable();
 846         }
 847
 848         scrollbar->SetScrollbar(pos, pageSize, range, pageSize, refresh);
 849     }
 850     else // no range means no scrollbar
 851     {
 852         if ( scrollbar )
 853         {
 854             // wxALWAYS_SHOW_SB only applies to the vertical scrollbar
 855             if ( (orient & wxVERTICAL) && (GetWindowStyle() & wxALWAYS_SHOW_SB) )
 856             {
 857                 // just disable the scrollbar
 858                 scrollbar->SetScrollbar(pos, pageSize, range, pageSize, refresh);
 859                 scrollbar->Disable();
 860             }
 861             else // really remove the scrollbar
 862             {
 863                 delete scrollbar;
 864
 865                 if ( orient & wxVERTICAL )
 866                     m_scrollbarVert = NULL;
 867                 else
 868                     m_scrollbarHorz = NULL;
 869
 870                 // the client area increased as we removed a scrollbar
 871                 hasClientSizeChanged = TRUE;
 872
 873                 // the size of the remaining scrollbar must be adjusted
 874                 if ( m_scrollbarHorz || m_scrollbarVert )
 875                 {
 876                     PositionScrollbars();
 877                 }
 878             }
 879         }
 880     }
 881
 882     // give the window a chance to relayout
 883     if ( hasClientSizeChanged )
 884     {
 885 #if wxUSE_TWO_WINDOWS
 886         wxWindowNative::SetSize( GetSize() );
 887 #else
 888         wxSizeEvent event(GetSize());
 889         (void)GetEventHandler()->ProcessEvent(event);
 890 #endif
 891     }
 892 }
 893
 894 void wxWindow::SetScrollPos(int orient, int pos, bool refresh)
 895 {
 896     wxScrollBar *scrollbar = GetScrollbar(orient);
 897     wxCHECK_RET( scrollbar, _T("no scrollbar to set position for") );
 898
 899     scrollbar->SetThumbPosition(pos);
 900
 901     // VZ: I think we can safely ignore this as we always refresh it
 902     //     automatically whenever the value chanegs
 903 #if 0
 904     if ( refresh )
 905         Refresh();
 906 #endif
 907 }
 908
 909 int wxWindow::GetScrollPos(int orient) const
 910 {
 911     wxScrollBar *scrollbar = GetScrollbar(orient);
 912     return scrollbar ? scrollbar->GetThumbPosition() : 0;
 913 }
 914
 915 int wxWindow::GetScrollThumb(int orient) const
 916 {
 917     wxScrollBar *scrollbar = GetScrollbar(orient);
 918     return scrollbar ? scrollbar->GetThumbSize() : 0;
 919 }
 920
 921 int wxWindow::GetScrollRange(int orient) const
 922 {
 923     wxScrollBar *scrollbar = GetScrollbar(orient);
 924     return scrollbar ? scrollbar->GetRange() : 0;
 925 }
 926
 927 void wxWindow::ScrollWindow(int dx, int dy, const wxRect *rect)
 928 {
 929     // use native scrolling when available and do it in generic way
 930     // otherwise:
 931 #ifdef __WXX11__
 932
 933     wxWindowNative::ScrollWindow(dx, dy, rect);
 934
 935 #else // !wxX11
 936
 937     // before scrolling it, ensure that we don't have any unpainted areas
 938     Update();
 939
 940     wxRect r;
 941
 942     if ( dx )
 943     {
 944         r = ScrollNoRefresh(dx, 0, rect);
 945         Refresh(TRUE /* erase bkgnd */, &r);
 946     }
 947
 948     if ( dy )
 949     {
 950         r = ScrollNoRefresh(0, dy, rect);
 951         Refresh(TRUE /* erase bkgnd */, &r);
 952     }
 953
 954     // scroll children accordingly:
 955     wxPoint offset(dx, dy);
 956
 957     for (wxWindowList::Node *node = GetChildren().GetFirst();
 958          node; node = node->GetNext())
 959     {
 960         wxWindow *child = node->GetData();
 961         if ( child == m_scrollbarVert || child == m_scrollbarHorz )
 962             continue;
 963
 964         // VS: Scrolling children has non-trivial semantics. If rect=NULL then
 965         //     it is easy: we scroll all children. Otherwise it gets
 966         //     complicated:
 967         //       1. if scrolling in one direction only, scroll only
 968         //          those children that intersect shaft defined by the rectangle
 969         //          and scrolling direction
 970         //       2. if scrolling in both axes, scroll all children
 971
 972         if ( rect && (dx * dy == 0 /* moving in only one of x, y axis */) )
 973         {
 974             wxRect childRect = child->GetRect();
 975             if ( dx == 0 && (childRect.GetLeft() <= rect->GetRight() ||
 976                              childRect.GetRight() >= rect->GetLeft()) )
 977             {
 978                 child->Move(child->GetPosition() + offset);
 979             }
 980             else if ( dy == 0 && (childRect.GetTop() <= rect->GetBottom() ||
 981                                   childRect.GetBottom() >= rect->GetTop()) )
 982             {
 983                 child->Move(child->GetPosition() + offset);
 984             }
 985         }
 986         else
 987         {
 988             child->Move(child->GetPosition() + offset);
 989         }
 990     }
 991 #endif // wxX11/!wxX11
 992 }
 993
 994 wxRect wxWindow::ScrollNoRefresh(int dx, int dy, const wxRect *rectTotal)
 995 {
 996     wxASSERT_MSG( !dx || !dy, _T("can't be used for diag scrolling") );
 997
 998     // the rect to refresh (which we will calculate)
 999     wxRect rect;
1000
1001     if ( !dx && !dy )
1002     {
1003         // nothing to do
1004         return rect;
1005     }
1006
1007     // calculate the part of the window which we can just redraw in the new
1008     // location
1009     wxSize sizeTotal = rectTotal ? rectTotal->GetSize() : GetClientSize();
1010
1011     wxLogTrace(_T("scroll"), _T("rect is %dx%d, scroll by %d, %d"),
1012                sizeTotal.x, sizeTotal.y, dx, dy);
1013
1014     // the initial and end point of the region we move in client coords
1015     wxPoint ptSource, ptDest;
1016     if ( rectTotal )
1017     {
1018         ptSource = rectTotal->GetPosition();
1019         ptDest = rectTotal->GetPosition();
1020     }
1021
1022     // the size of this region
1023     wxSize size;
1024     size.x = sizeTotal.x - abs(dx);
1025     size.y = sizeTotal.y - abs(dy);
1026     if ( size.x <= 0 || size.y <= 0 )
1027     {
1028         // just redraw everything as nothing of the displayed image will stay
1029         wxLogTrace(_T("scroll"), _T("refreshing everything"));
1030
1031         rect = rectTotal ? *rectTotal : wxRect(0, 0, sizeTotal.x, sizeTotal.y);
1032     }
1033     else // move the part which doesn't change to the new location
1034     {
1035         // note that when we scroll the canvas in some direction we move the
1036         // block which doesn't need to be refreshed in the opposite direction
1037
1038         if ( dx < 0 )
1039         {
1040             // scroll to the right, move to the left
1041             ptSource.x -= dx;
1042         }
1043         else
1044         {
1045             // scroll to the left, move to the right
1046             ptDest.x += dx;
1047         }
1048
1049         if ( dy < 0 )
1050         {
1051             // scroll down, move up
1052             ptSource.y -= dy;
1053         }
1054         else
1055         {
1056             // scroll up, move down
1057             ptDest.y += dy;
1058         }
1059
1060 #if wxUSE_CARET
1061         // we need to hide the caret before moving or it will erase itself at
1062         // the wrong (old) location
1063         wxCaret *caret = GetCaret();
1064         if ( caret )
1065             caret->Hide();
1066 #endif // wxUSE_CARET
1067
1068         // do move
1069         wxClientDC dc(this);
1070         wxBitmap bmp(size.x, size.y);
1071         wxMemoryDC dcMem;
1072         dcMem.SelectObject(bmp);
1073
1074         dcMem.Blit(wxPoint(0, 0), size, &dc, ptSource
1075 #if defined(__WXGTK__) && !defined(wxHAS_WORKING_GTK_DC_BLIT)
1076                 + GetClientAreaOrigin()
1077 #endif // broken wxGTK wxDC::Blit
1078                   );
1079         dc.Blit(ptDest, size, &dcMem, wxPoint(0, 0));
1080
1081         wxLogTrace(_T("scroll"),
1082                    _T("Blit: (%d, %d) of size %dx%d -> (%d, %d)"),
1083                    ptSource.x, ptSource.y,
1084                    size.x, size.y,
1085                    ptDest.x, ptDest.y);
1086
1087         // and now repaint the uncovered area
1088
1089         // FIXME: We repaint the intersection of these rectangles twice - is
1090         //        it bad? I don't think so as it is rare to scroll the window
1091         //        diagonally anyhow and so adding extra logic to compute
1092         //        rectangle intersection is probably not worth the effort
1093
1094         rect.x = ptSource.x;
1095         rect.y = ptSource.y;
1096
1097         if ( dx )
1098         {
1099             if ( dx < 0 )
1100             {
1101                 // refresh the area along the right border
1102                 rect.x += size.x + dx;
1103                 rect.width = -dx;
1104             }
1105             else
1106             {
1107                 // refresh the area along the left border
1108                 rect.width = dx;
1109             }
1110
1111             rect.height = sizeTotal.y;
1112
1113             wxLogTrace(_T("scroll"), _T("refreshing (%d, %d)-(%d, %d)"),
1114                        rect.x, rect.y,
1115                        rect.GetRight() + 1, rect.GetBottom() + 1);
1116         }
1117
1118         if ( dy )
1119         {
1120             if ( dy < 0 )
1121             {
1122                 // refresh the area along the bottom border
1123                 rect.y += size.y + dy;
1124                 rect.height = -dy;
1125             }
1126             else
1127             {
1128                 // refresh the area along the top border
1129                 rect.height = dy;
1130             }
1131
1132             rect.width = sizeTotal.x;
1133
1134             wxLogTrace(_T("scroll"), _T("refreshing (%d, %d)-(%d, %d)"),
1135                        rect.x, rect.y,
1136                        rect.GetRight() + 1, rect.GetBottom() + 1);
1137         }
1138
1139 #if wxUSE_CARET
1140         if ( caret )
1141             caret->Show();
1142 #endif // wxUSE_CARET
1143     }
1144
1145     return rect;
1146 }
1147
1148 // ----------------------------------------------------------------------------
1149 // accelerators and menu hot keys
1150 // ----------------------------------------------------------------------------
1151
1152 #if wxUSE_MENUS
1153     // the last window over which Alt was pressed (used by OnKeyUp)
1154     wxWindow *wxWindow::ms_winLastAltPress = NULL;
1155 #endif // wxUSE_MENUS
1156
1157 #if wxUSE_ACCEL || wxUSE_MENUS
1158
1159 void wxWindow::OnKeyDown(wxKeyEvent& event)
1160 {
1161 #if wxUSE_MENUS
1162     int key = event.GetKeyCode();
1163     if ( !event.ControlDown() && (key == WXK_MENU || key == WXK_F10) )
1164     {
1165         ms_winLastAltPress = this;
1166
1167         // it can't be an accel anyhow
1168         return;
1169     }
1170
1171     ms_winLastAltPress = NULL;
1172 #endif // wxUSE_MENUS
1173
1174 #if wxUSE_ACCEL
1175     for ( wxWindow *win = this; win; win = win->GetParent() )
1176     {
1177         int command = win->GetAcceleratorTable()->GetCommand(event);
1178         if ( command != -1 )
1179         {
1180             wxCommandEvent eventCmd(wxEVT_COMMAND_MENU_SELECTED, command);
1181             if ( win->GetEventHandler()->ProcessEvent(eventCmd) )
1182             {
1183                 // skip "event.Skip()" below
1184                 return;
1185             }
1186         }
1187
1188         if ( win->IsTopLevel() )
1189         {
1190             // try the frame menu bar
1191 #if wxUSE_MENUS
1192             wxFrame *frame = wxDynamicCast(win, wxFrame);
1193             if ( frame )
1194             {
1195                 wxMenuBar *menubar = frame->GetMenuBar();
1196                 if ( menubar && menubar->ProcessAccelEvent(event) )
1197                 {
1198                     // skip "event.Skip()" below
1199                     return;
1200                 }
1201             }
1202 #endif // wxUSE_MENUS
1203
1204             // if it wasn't in a menu, try to find a button
1205             if ( command != -1 )
1206             {
1207                 wxWindow* child = win->FindWindow(command);
1208                 if ( child && wxDynamicCast(child, wxButton) )
1209                 {
1210                     wxCommandEvent eventCmd(wxEVT_COMMAND_BUTTON_CLICKED, command);
1211                     eventCmd.SetEventObject(child);
1212                     if ( child->GetEventHandler()->ProcessEvent(eventCmd) )
1213                     {
1214                         // skip "event.Skip()" below
1215                         return;
1216                     }
1217                 }
1218             }
1219
1220             // don't propagate accels from the child frame to the parent one
1221             break;
1222         }
1223     }
1224 #endif // wxUSE_ACCEL
1225
1226     event.Skip();
1227 }
1228
1229 #endif // wxUSE_ACCEL
1230
1231 #if wxUSE_MENUS
1232
1233 wxMenuBar *wxWindow::GetParentFrameMenuBar() const
1234 {
1235     for ( const wxWindow *win = this; win; win = win->GetParent() )
1236     {
1237         if ( win->IsTopLevel() )
1238         {
1239             wxFrame *frame = wxDynamicCast(win, wxFrame);
1240             if ( frame )
1241             {
1242                 return frame->GetMenuBar();
1243             }
1244
1245             // don't look further - we don't want to return the menubar of the
1246             // parent frame
1247             break;
1248         }
1249     }
1250
1251     return NULL;
1252 }
1253
1254 void wxWindow::OnChar(wxKeyEvent& event)
1255 {
1256     if ( event.AltDown() && !event.ControlDown() )
1257     {
1258         int key = event.GetKeyCode();
1259
1260         wxMenuBar *menubar = GetParentFrameMenuBar();
1261         if ( menubar )
1262         {
1263             int item = menubar->FindNextItemForAccel(-1, key);
1264             if ( item != -1 )
1265             {
1266                 menubar->PopupMenu((size_t)item);
1267
1268                 // skip "event.Skip()" below
1269                 return;
1270             }
1271         }
1272     }
1273
1274     event.Skip();
1275 }
1276
1277 void wxWindow::OnKeyUp(wxKeyEvent& event)
1278 {
1279     int key = event.GetKeyCode();
1280     if ( !event.HasModifiers() && (key == WXK_MENU || key == WXK_F10) )
1281     {
1282         // only process Alt release specially if there were no other key
1283         // presses since Alt had been pressed and if both events happened in
1284         // the same window
1285         if ( ms_winLastAltPress == this )
1286         {
1287             wxMenuBar *menubar = GetParentFrameMenuBar();
1288             if ( menubar && this != menubar )
1289             {
1290                 menubar->SelectMenu(0);
1291             }
1292         }
1293     }
1294     else
1295     {
1296         event.Skip();
1297     }
1298
1299     // in any case reset it
1300     ms_winLastAltPress = NULL;
1301 }
1302
1303 #endif // wxUSE_MENUS
1304
1305 // ----------------------------------------------------------------------------
1306 // MSW-specific section
1307 // ----------------------------------------------------------------------------
1308
1309 #ifdef __WXMSW__
1310
1311 #include "wx/msw/private.h"
1312
1313 long wxWindow::MSWWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
1314 {
1315     if ( message == WM_NCHITTEST )
1316     {
1317         // the windows which contain the other windows should let the mouse
1318         // events through, otherwise a window inside a static box would
1319         // never get any events at all
1320         if ( IsStaticBox() )
1321         {
1322             return HTTRANSPARENT;
1323         }
1324     }
1325
1326     return wxWindowNative::MSWWindowProc(message, wParam, lParam);
1327 }
1328
1329 #endif // __WXMSW__
1330