src/dfb/window.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/dfb/window.cpp
   3 // Purpose:     wxWindow
   4 // Author:      Vaclav Slavik
   5 //              (based on GTK, MSW, MGL implementations)
   6 // Created:     2006-80-10
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2006 REA Elektronik GmbH
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ===========================================================================
  13 // declarations
  14 // ===========================================================================
  15
  16 // ---------------------------------------------------------------------------
  17 // headers
  18 // ---------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #include "wx/window.h"
  28
  29 #ifndef WX_PRECOMP
  30     #include "wx/dcclient.h"
  31     #include "wx/nonownedwnd.h"
  32 #endif
  33
  34 #include "wx/caret.h"
  35 #include "wx/dynarray.h"
  36
  37 #include "wx/dfb/private.h"
  38 #include "wx/private/overlay.h"
  39
  40 #define TRACE_EVENTS "events"
  41 #define TRACE_PAINT  "paint"
  42
  43 // ===========================================================================
  44 // implementation
  45 // ===========================================================================
  46
  47 // ---------------------------------------------------------------------------
  48 // global variables
  49 // ---------------------------------------------------------------------------
  50
  51 // the window that has keyboard focus:
  52 static wxWindowDFB *gs_focusedWindow = NULL;
  53 // the window that is about to be focused after currently focused
  54 // one looses focus:
  55 static wxWindow *gs_toBeFocusedWindow = NULL;
  56 // the window that has mouse capture
  57 static wxWindowDFB *gs_mouseCapture = NULL;
  58
  59 // ---------------------------------------------------------------------------
  60 // overlays support
  61 // ---------------------------------------------------------------------------
  62
  63 WX_DEFINE_ARRAY_PTR(wxOverlayImpl*, wxDfbOverlaysList);
  64
  65 // ---------------------------------------------------------------------------
  66 // event tables
  67 // ---------------------------------------------------------------------------
  68
  69 // in wxUniv this class is abstract because it doesn't have DoPopupMenu()
  70 IMPLEMENT_ABSTRACT_CLASS(wxWindowDFB, wxWindowBase)
  71
  72 BEGIN_EVENT_TABLE(wxWindowDFB, wxWindowBase)
  73 END_EVENT_TABLE()
  74
  75 //-----------------------------------------------------------------------------
  76 // global functions
  77 //-----------------------------------------------------------------------------
  78
  79 wxWindow *wxGetActiveWindow()
  80 {
  81     return wxWindow::FindFocus();
  82 }
  83
  84 // ----------------------------------------------------------------------------
  85 // constructors and such
  86 // ----------------------------------------------------------------------------
  87
  88 void wxWindowDFB::Init()
  89 {
  90     m_isShown = true;
  91     m_tlw = NULL;
  92     m_overlays = NULL;
  93 }
  94
  95 // Destructor
  96 wxWindowDFB::~wxWindowDFB()
  97 {
  98     SendDestroyEvent();
  99
 100     if ( gs_mouseCapture == this )
 101         ReleaseMouse();
 102
 103     if ( gs_focusedWindow == this )
 104         DFBKillFocus();
 105
 106     DestroyChildren();
 107 }
 108
 109 // real construction (Init() must have been called before!)
 110 bool wxWindowDFB::Create(wxWindow *parent,
 111                          wxWindowID id,
 112                          const wxPoint& pos,
 113                          const wxSize& size,
 114                          long style,
 115                          const wxString& name)
 116 {
 117     if ( !m_tlw && parent )
 118         m_tlw = parent->GetTLW();
 119
 120     if ( !CreateBase(parent, id, pos, size, style, wxDefaultValidator, name) )
 121         return false;
 122
 123     if ( parent )
 124         parent->AddChild(this);
 125
 126     // set the size to something bogus initially, in case some code tries to
 127     // create wxWindowDC before SetSize() is called below:
 128     m_rect.width = m_rect.height = 1;
 129
 130     int x, y, w, h;
 131     x = pos.x, y = pos.y;
 132     if ( x == -1  ) x = 0;
 133     if ( y == -1 ) y = 0;
 134     w = WidthDefault(size.x);
 135     h = HeightDefault(size.y);
 136     SetSize(x, y, w, h);
 137
 138     return true;
 139 }
 140
 141 // ---------------------------------------------------------------------------
 142 // surface access
 143 // ---------------------------------------------------------------------------
 144
 145 wxIDirectFBSurfacePtr wxWindowDFB::ObtainDfbSurface() const
 146 {
 147     wxCHECK_MSG( m_parent, NULL, "parentless window?" );
 148
 149     wxIDirectFBSurfacePtr parentSurface(m_parent->GetDfbSurface());
 150     wxCHECK_MSG( parentSurface, NULL, "invalid parent surface" );
 151
 152     wxRect r(GetRect());
 153     AdjustForParentClientOrigin(r.x, r.y, 0);
 154     DFBRectangle rect = { r.x, r.y, r.width, r.height };
 155
 156     return parentSurface->GetSubSurface(&rect);
 157 }
 158
 159 wxIDirectFBSurfacePtr wxWindowDFB::GetDfbSurface()
 160 {
 161     if ( !m_surface )
 162     {
 163         m_surface = ObtainDfbSurface();
 164         wxASSERT_MSG( m_surface, "invalid DirectFB surface" );
 165     }
 166
 167     return m_surface;
 168 }
 169
 170 void wxWindowDFB::InvalidateDfbSurface()
 171 {
 172     m_surface = NULL;
 173
 174     // surfaces of the children are subsurfaces of this window's surface,
 175     // so they must be invalidated as well:
 176     wxWindowList& children = GetChildren();
 177     for ( wxWindowList::iterator i = children.begin(); i != children.end(); ++i )
 178     {
 179         (*i)->InvalidateDfbSurface();
 180     }
 181 }
 182
 183 // ---------------------------------------------------------------------------
 184 // basic operations
 185 // ---------------------------------------------------------------------------
 186
 187 void wxWindowDFB::SetFocus()
 188 {
 189     if ( gs_focusedWindow == this )
 190         return; // nothing to do, focused already
 191
 192     wxWindowDFB *oldFocusedWindow = gs_focusedWindow;
 193
 194     if ( gs_focusedWindow )
 195     {
 196         gs_toBeFocusedWindow = (wxWindow*)this;
 197         gs_focusedWindow->DFBKillFocus();
 198         gs_toBeFocusedWindow = NULL;
 199     }
 200
 201     gs_focusedWindow = this;
 202
 203     if ( IsShownOnScreen() &&
 204          (!oldFocusedWindow || oldFocusedWindow->GetTLW() != m_tlw) )
 205     {
 206         m_tlw->SetDfbFocus();
 207     }
 208     // else: do nothing, because DirectFB windows cannot have focus if they
 209     //       are hidden; when the TLW becomes visible, it will set the focus
 210     //       to use from wxTLW::Show()
 211
 212     // notify the parent keeping track of focus for the kbd navigation
 213     // purposes that we got it
 214     wxChildFocusEvent eventFocus((wxWindow*)this);
 215     HandleWindowEvent(eventFocus);
 216
 217     wxFocusEvent event(wxEVT_SET_FOCUS, GetId());
 218     event.SetEventObject(this);
 219     event.SetWindow((wxWindow*)oldFocusedWindow);
 220     HandleWindowEvent(event);
 221
 222 #if wxUSE_CARET
 223     // caret needs to be informed about focus change
 224     wxCaret *caret = GetCaret();
 225     if ( caret )
 226         caret->OnSetFocus();
 227 #endif // wxUSE_CARET
 228 }
 229
 230 void wxWindowDFB::DFBKillFocus()
 231 {
 232     wxCHECK_RET( gs_focusedWindow == this,
 233                  "killing focus on window that doesn't have it" );
 234
 235     gs_focusedWindow = NULL;
 236
 237     if ( m_isBeingDeleted )
 238         return; // don't send any events from dtor
 239
 240 #if wxUSE_CARET
 241     // caret needs to be informed about focus change
 242     wxCaret *caret = GetCaret();
 243     if ( caret )
 244         caret->OnKillFocus();
 245 #endif // wxUSE_CARET
 246
 247     wxFocusEvent event(wxEVT_KILL_FOCUS, GetId());
 248     event.SetEventObject(this);
 249     event.SetWindow(gs_toBeFocusedWindow);
 250     HandleWindowEvent(event);
 251 }
 252
 253 // ----------------------------------------------------------------------------
 254 // this wxWindowBase function is implemented here (in platform-specific file)
 255 // because it is static and so couldn't be made virtual
 256 // ----------------------------------------------------------------------------
 257 wxWindow *wxWindowBase::DoFindFocus()
 258 {
 259     return (wxWindow*)gs_focusedWindow;
 260 }
 261
 262 bool wxWindowDFB::Show(bool show)
 263 {
 264     if ( !wxWindowBase::Show(show) )
 265         return false;
 266
 267     // Unlike Refresh(), DoRefreshWindow() doesn't check visibility, so
 268     // call it to force refresh of either this window (if showing) or its
 269     // parent area at the place of this window (if hiding):
 270     DoRefreshWindow();
 271
 272     return true;
 273 }
 274
 275 // Raise the window to the top of the Z order
 276 void wxWindowDFB::Raise()
 277 {
 278     wxFAIL_MSG( "Raise() not implemented" );
 279 }
 280
 281 // Lower the window to the bottom of the Z order
 282 void wxWindowDFB::Lower()
 283 {
 284     wxFAIL_MSG( "Lower() not implemented" );
 285 }
 286
 287 void wxWindowDFB::DoCaptureMouse()
 288 {
 289 #warning "implement this"
 290 #if 0
 291     if ( gs_mouseCapture )
 292         DFB_wmUncaptureEvents(gs_mouseCapture->m_wnd, wxDFB_CAPTURE_MOUSE);
 293 #endif
 294     gs_mouseCapture = this;
 295 #if 0
 296     DFB_wmCaptureEvents(m_wnd, EVT_MOUSEEVT, wxDFB_CAPTURE_MOUSE);
 297 #endif
 298 }
 299
 300 void wxWindowDFB::DoReleaseMouse()
 301 {
 302     wxASSERT_MSG( gs_mouseCapture == this, wxT("attempt to release mouse, but this window hasn't captured it") );
 303
 304 #warning "implement this"
 305 #if 0
 306     DFB_wmUncaptureEvents(m_wnd, wxDFB_CAPTURE_MOUSE);
 307 #endif
 308     gs_mouseCapture = NULL;
 309 }
 310
 311 /* static */ wxWindow *wxWindowBase::GetCapture()
 312 {
 313     return (wxWindow*)gs_mouseCapture;
 314 }
 315
 316 bool wxWindowDFB::SetCursor(const wxCursor& cursor)
 317 {
 318     if ( !wxWindowBase::SetCursor(cursor) )
 319     {
 320         // no change
 321         return false;
 322     }
 323
 324 #warning "implement this"
 325 #if 0
 326     if ( m_cursor.Ok() )
 327         DFB_wmSetWindowCursor(m_wnd, *m_cursor.GetDFBCursor());
 328     else
 329         DFB_wmSetWindowCursor(m_wnd, *wxSTANDARD_CURSOR->GetDFBCursor());
 330 #endif
 331
 332     return true;
 333 }
 334
 335 void wxWindowDFB::WarpPointer(int x, int y)
 336 {
 337     int w, h;
 338     wxDisplaySize(&w, &h);
 339
 340     ClientToScreen(&x, &y);
 341     if ( x < 0 ) x = 0;
 342     if ( y < 0 ) y = 0;
 343     if ( x >= w ) x = w-1;
 344     if ( y >= h ) y = h-1;
 345
 346     wxIDirectFBDisplayLayerPtr layer(wxIDirectFB::Get()->GetDisplayLayer());
 347     wxCHECK_RET( layer, "no display layer" );
 348
 349     layer->WarpCursor(x, y);
 350 }
 351
 352 // Set this window to be the child of 'parent'.
 353 bool wxWindowDFB::Reparent(wxWindowBase *parent)
 354 {
 355     if ( !wxWindowBase::Reparent(parent) )
 356         return false;
 357
 358 #warning "implement this"
 359     wxFAIL_MSG( "reparenting not yet implemented" );
 360
 361     return true;
 362 }
 363
 364 // ---------------------------------------------------------------------------
 365 // moving and resizing
 366 // ---------------------------------------------------------------------------
 367
 368 // Get total size
 369 void wxWindowDFB::DoGetSize(int *x, int *y) const
 370 {
 371     if (x) *x = m_rect.width;
 372     if (y) *y = m_rect.height;
 373 }
 374
 375 void wxWindowDFB::DoGetPosition(int *x, int *y) const
 376 {
 377     if (x) *x = m_rect.x;
 378     if (y) *y = m_rect.y;
 379 }
 380
 381 static wxPoint GetScreenPosOfClientOrigin(const wxWindowDFB *win)
 382 {
 383     wxCHECK_MSG( win, wxPoint(0, 0), "no window provided" );
 384
 385     wxPoint pt(win->GetPosition() + win->GetClientAreaOrigin());
 386
 387     if ( !win->IsTopLevel() )
 388         pt += GetScreenPosOfClientOrigin(win->GetParent());
 389
 390     return pt;
 391 }
 392
 393 void wxWindowDFB::DoScreenToClient(int *x, int *y) const
 394 {
 395     wxPoint o = GetScreenPosOfClientOrigin(this);
 396
 397     if (x) *x -= o.x;
 398     if (y) *y -= o.y;
 399 }
 400
 401 void wxWindowDFB::DoClientToScreen(int *x, int *y) const
 402 {
 403     wxPoint o = GetScreenPosOfClientOrigin(this);
 404
 405     if (x) *x += o.x;
 406     if (y) *y += o.y;
 407 }
 408
 409 // Get size *available for subwindows* i.e. excluding menu bar etc.
 410 void wxWindowDFB::DoGetClientSize(int *x, int *y) const
 411 {
 412     DoGetSize(x, y);
 413 }
 414
 415 void wxWindowDFB::DoMoveWindow(int x, int y, int width, int height)
 416 {
 417     // NB: [x,y] arguments are in (parent's) window coordinates, while
 418     //     m_rect.{x,y} are in (parent's) client coordinates. That's why we
 419     //     offset by parentOrigin in some places below
 420
 421     wxPoint parentOrigin(0, 0);
 422     AdjustForParentClientOrigin(parentOrigin.x, parentOrigin.y);
 423
 424     wxRect oldpos(m_rect);
 425     oldpos.Offset(parentOrigin);
 426
 427     wxRect newpos(x, y, width, height);
 428
 429     // input [x,y] is in window coords, but we store client coords in m_rect:
 430     m_rect = newpos;
 431     m_rect.Offset(-parentOrigin);
 432
 433     // window's position+size changed and so did the subsurface that covers it
 434     InvalidateDfbSurface();
 435
 436     if ( IsShown() )
 437     {
 438         // queue both former and new position of the window for repainting:
 439         wxWindow *parent = GetParent();
 440
 441         // only refresh the visible parts:
 442         if ( !CanBeOutsideClientArea() )
 443         {
 444             wxRect parentClient(parent->GetClientSize());
 445             oldpos.Intersect(parentClient);
 446             newpos.Intersect(parentClient);
 447         }
 448
 449         parent->RefreshRect(oldpos);
 450         parent->RefreshRect(newpos);
 451     }
 452 }
 453
 454 // set the size of the window: if the dimensions are positive, just use them,
 455 // but if any of them is equal to -1, it means that we must find the value for
 456 // it ourselves (unless sizeFlags contains wxSIZE_ALLOW_MINUS_ONE flag, in
 457 // which case -1 is a valid value for x and y)
 458 //
 459 // If sizeFlags contains wxSIZE_AUTO_WIDTH/HEIGHT flags (default), we calculate
 460 // the width/height to best suit our contents, otherwise we reuse the current
 461 // width/height
 462 void wxWindowDFB::DoSetSize(int x, int y, int width, int height, int sizeFlags)
 463 {
 464     // get the current size and position...
 465     int currentX, currentY;
 466     GetPosition(&currentX, &currentY);
 467     int currentW,currentH;
 468     GetSize(&currentW, &currentH);
 469
 470     if ( x == -1 && !(sizeFlags & wxSIZE_ALLOW_MINUS_ONE) )
 471         x = currentX;
 472     if ( y == -1 && !(sizeFlags & wxSIZE_ALLOW_MINUS_ONE) )
 473         y = currentY;
 474
 475     // ... and don't do anything (avoiding flicker) if it's already ok
 476     if ( x == currentX && y == currentY &&
 477          width == currentW && height == currentH )
 478     {
 479         return;
 480     }
 481
 482     wxSize size(-1, -1);
 483     if ( width == -1 )
 484     {
 485         if ( sizeFlags & wxSIZE_AUTO_WIDTH )
 486         {
 487             size = DoGetBestSize();
 488             width = size.x;
 489         }
 490         else
 491         {
 492             // just take the current one
 493             width = currentW;
 494         }
 495     }
 496
 497     if ( height == -1 )
 498     {
 499         if ( sizeFlags & wxSIZE_AUTO_HEIGHT )
 500         {
 501             if ( size.x == -1 )
 502             {
 503                 size = DoGetBestSize();
 504             }
 505             //else: already called DoGetBestSize() above
 506
 507             height = size.y;
 508         }
 509         else
 510         {
 511             // just take the current one
 512             height = currentH;
 513         }
 514     }
 515
 516     int maxWidth = GetMaxWidth(),
 517         minWidth = GetMinWidth(),
 518         maxHeight = GetMaxHeight(),
 519         minHeight = GetMinHeight();
 520
 521     if ( minWidth != -1 && width < minWidth ) width = minWidth;
 522     if ( maxWidth != -1 && width > maxWidth ) width = maxWidth;
 523     if ( minHeight != -1 && height < minHeight ) height = minHeight;
 524     if ( maxHeight != -1 && height > maxHeight ) height = maxHeight;
 525
 526     if ( m_rect.x != x || m_rect.y != y ||
 527          m_rect.width != width || m_rect.height != height )
 528     {
 529         AdjustForParentClientOrigin(x, y, sizeFlags);
 530         DoMoveWindow(x, y, width, height);
 531
 532         wxSize newSize(width, height);
 533         wxSizeEvent event(newSize, GetId());
 534         event.SetEventObject(this);
 535         HandleWindowEvent(event);
 536     }
 537 }
 538
 539 void wxWindowDFB::DoSetClientSize(int width, int height)
 540 {
 541     SetSize(width, height);
 542 }
 543
 544 // ---------------------------------------------------------------------------
 545 // text metrics
 546 // ---------------------------------------------------------------------------
 547
 548 int wxWindowDFB::GetCharHeight() const
 549 {
 550     wxWindowDC dc((wxWindow*)this);
 551     return dc.GetCharHeight();
 552 }
 553
 554 int wxWindowDFB::GetCharWidth() const
 555 {
 556     wxWindowDC dc((wxWindow*)this);
 557     return dc.GetCharWidth();
 558 }
 559
 560 void wxWindowDFB::GetTextExtent(const wxString& string,
 561                              int *x, int *y,
 562                              int *descent, int *externalLeading,
 563                              const wxFont *theFont) const
 564 {
 565     wxWindowDC dc((wxWindow*)this);
 566     dc.GetTextExtent(string, x, y, descent, externalLeading, (wxFont*)theFont);
 567 }
 568
 569
 570 // ---------------------------------------------------------------------------
 571 // painting
 572 // ---------------------------------------------------------------------------
 573
 574 void wxWindowDFB::Refresh(bool WXUNUSED(eraseBack), const wxRect *rect)
 575 {
 576     if ( !IsShown() || IsFrozen() )
 577         return;
 578
 579     // NB[1]: We intentionally ignore the eraseBack argument here. This is
 580     //        because of the way wxDFB's painting is implemented: the refresh
 581     //        request is propagated up to wxTLW, which is then painted in
 582     //        top-down order. This means that this window's area is first
 583     //        painted by its parent and this window is then painted over it, so
 584     //        it's not safe to not paint this window's background even if
 585     //        eraseBack=false.
 586     // NB[2]: wxWindow::Refresh() takes the rectangle in client coords, but
 587     //        wxUniv translates it to window coords before passing it to
 588     //        wxWindowDFB::Refresh(), so we can directly pass the rect to
 589     //        DoRefreshRect (which takes window, not client, coords) here.
 590     if ( rect )
 591         DoRefreshRect(*rect);
 592     else
 593         DoRefreshWindow();
 594 }
 595
 596 void wxWindowDFB::RefreshWindowRect(const wxRect& rect)
 597 {
 598     if ( !IsShown() || IsFrozen() )
 599         return;
 600
 601     DoRefreshRect(rect);
 602 }
 603
 604 void wxWindowDFB::DoRefreshWindow()
 605 {
 606     // NB: DoRefreshRect() takes window coords, not client, so this is correct
 607     DoRefreshRect(wxRect(GetSize()));
 608 }
 609
 610 void wxWindowDFB::DoRefreshRect(const wxRect& rect)
 611 {
 612     wxWindow *parent = GetParent();
 613     wxCHECK_RET( parent, "no parent" );
 614
 615     // don't overlap outside of the window (NB: 'rect' is in window coords):
 616     wxRect r(rect);
 617     r.Intersect(wxRect(GetSize()));
 618     if ( r.IsEmpty() )
 619         return;
 620
 621     wxLogTrace(TRACE_PAINT,
 622                "%p ('%s'): refresh rect [%i,%i,%i,%i]",
 623                this, GetName().c_str(),
 624                rect.x, rect.y, rect.GetRight(), rect.GetBottom());
 625
 626     // convert the refresh rectangle to parent's coordinates and
 627     // recursively refresh the parent:
 628     r.Offset(GetPosition());
 629     r.Offset(parent->GetClientAreaOrigin());
 630
 631     // normal windows cannot extend out of its parent's client area, so don't
 632     // refresh any hidden parts:
 633     if ( !CanBeOutsideClientArea() )
 634         r.Intersect(parent->GetClientRect());
 635
 636     parent->DoRefreshRect(r);
 637 }
 638
 639 void wxWindowDFB::Update()
 640 {
 641     if ( !IsShown() || IsFrozen() )
 642         return;
 643
 644     GetParent()->Update();
 645 }
 646
 647 void wxWindowDFB::DoThaw()
 648 {
 649     if ( IsShown() )
 650         DoRefreshWindow();
 651 }
 652
 653 void wxWindowDFB::PaintWindow(const wxRect& rect)
 654 {
 655     wxCHECK_RET( !IsFrozen() && IsShown(), "shouldn't be called" );
 656
 657     wxLogTrace(TRACE_PAINT,
 658                "%p ('%s'): painting region [%i,%i,%i,%i]",
 659                this, GetName().c_str(),
 660                rect.x, rect.y, rect.GetRight(), rect.GetBottom());
 661
 662     m_updateRegion = rect;
 663
 664     // FIXME_DFB: don't waste time rendering the area if it's fully covered
 665     //            by some children, go directly to rendering the children
 666     //            (unless some child has HasTransparentBackground()=true!)
 667
 668     // NB: unconditionally send wxEraseEvent, because our implementation of
 669     //     wxWindow::Refresh() ignores the eraseBack argument
 670     wxWindowDC dc((wxWindow*)this);
 671     wxEraseEvent eventEr(m_windowId, &dc);
 672     eventEr.SetEventObject(this);
 673     HandleWindowEvent(eventEr);
 674
 675     wxRect clientRect(GetClientRect());
 676
 677     // only send wxNcPaintEvent if drawing at least part of nonclient area:
 678     if ( !clientRect.Contains(rect) )
 679     {
 680         wxNcPaintEvent eventNc(GetId());
 681         eventNc.SetEventObject(this);
 682         HandleWindowEvent(eventNc);
 683     }
 684     else
 685     {
 686         wxLogTrace(TRACE_PAINT, "%p ('%s'): not sending wxNcPaintEvent",
 687                    this, GetName().c_str());
 688     }
 689
 690     // only send wxPaintEvent if drawing at least part of client area:
 691     if ( rect.Intersects(clientRect) )
 692     {
 693         wxPaintEvent eventPt(GetId());
 694         eventPt.SetEventObject(this);
 695         HandleWindowEvent(eventPt);
 696     }
 697     else
 698     {
 699         wxLogTrace(TRACE_PAINT, "%p ('%s'): not sending wxPaintEvent",
 700                    this, GetName().c_str());
 701     }
 702
 703     // draw window's overlays on top of the painted window, if we have any:
 704     PaintOverlays(rect);
 705
 706     m_updateRegion.Clear();
 707
 708     // client area portion of 'rect':
 709     wxRect rectClientOnly(rect);
 710     rectClientOnly.Intersect(clientRect);
 711
 712     // paint the children:
 713     wxPoint origin = GetClientAreaOrigin();
 714     wxWindowList& children = GetChildren();
 715     for ( wxWindowList::iterator i = children.begin();
 716           i != children.end(); ++i )
 717     {
 718         wxWindow *child = *i;
 719
 720         if ( child->IsFrozen() || !child->IsShown() )
 721             continue; // don't paint anything if the window is frozen or hidden
 722
 723         // compute child's area to repaint
 724         wxRect childrect(child->GetRect());
 725         childrect.Offset(origin);
 726
 727         if ( child->CanBeOutsideClientArea() )
 728             childrect.Intersect(rect);
 729         else
 730             childrect.Intersect(rectClientOnly);
 731
 732         if ( childrect.IsEmpty() )
 733             continue;
 734
 735         // and repaint it:
 736         childrect.Offset(-child->GetPosition());
 737         childrect.Offset(-origin);
 738         child->PaintWindow(childrect);
 739     }
 740 }
 741
 742 void wxWindowDFB::PaintOverlays(const wxRect& rect)
 743 {
 744     if ( !m_overlays )
 745         return;
 746
 747     for ( wxDfbOverlaysList::const_iterator i = m_overlays->begin();
 748           i != m_overlays->end(); ++i )
 749     {
 750         const wxOverlayImpl * const overlay = *i;
 751
 752         wxRect orectOrig(overlay->GetRect());
 753         wxRect orect(orectOrig);
 754         orect.Intersect(rect);
 755         if ( orect.IsEmpty() )
 756             continue;
 757
 758         if ( overlay->IsEmpty() )
 759             continue; // nothing to paint
 760
 761         DFBRectangle dfbRect = { orect.x - orectOrig.x, orect.y - orectOrig.y,
 762                                  orect.width, orect.height };
 763         GetDfbSurface()->Blit
 764                          (
 765                            overlay->GetDirectFBSurface(),
 766                            &dfbRect,
 767                            orect.x, orect.y
 768                          );
 769     }
 770 }
 771
 772 void wxWindowDFB::AddOverlay(wxOverlayImpl *overlay)
 773 {
 774     if ( !m_overlays )
 775         m_overlays = new wxDfbOverlaysList;
 776
 777     m_overlays->Add(overlay);
 778 }
 779
 780 void wxWindowDFB::RemoveOverlay(wxOverlayImpl *overlay)
 781 {
 782     wxCHECK_RET( m_overlays, "no overlays to remove" );
 783
 784     m_overlays->Remove(overlay);
 785
 786     if ( m_overlays->empty() )
 787     {
 788         wxDELETE(m_overlays);
 789     }
 790
 791     if ( !m_isBeingDeleted )
 792         RefreshWindowRect(overlay->GetRect());
 793 }
 794
 795
 796 // ---------------------------------------------------------------------------
 797 // events handling
 798 // ---------------------------------------------------------------------------
 799
 800 #define KEY(dfb, wx)                                                \
 801     case dfb:                                                       \
 802           wxLogTrace(TRACE_EVENTS,                                  \
 803                      _T("key " #dfb " mapped to " #wx));            \
 804           return wx
 805
 806 // returns translated keycode, i.e. the one for KEYUP/KEYDOWN where 'a'..'z' is
 807 // translated to 'A'..'Z'
 808 static long GetTranslatedKeyCode(DFBInputDeviceKeyIdentifier key_id)
 809 {
 810     switch ( key_id )
 811     {
 812         KEY(DIKI_UNKNOWN,           0);
 813
 814         KEY(DIKI_A,                 'A');
 815         KEY(DIKI_B,                 'B');
 816         KEY(DIKI_C,                 'C');
 817         KEY(DIKI_D,                 'D');
 818         KEY(DIKI_E,                 'E');
 819         KEY(DIKI_F,                 'F');
 820         KEY(DIKI_G,                 'G');
 821         KEY(DIKI_H,                 'H');
 822         KEY(DIKI_I,                 'I');
 823         KEY(DIKI_J,                 'J');
 824         KEY(DIKI_K,                 'K');
 825         KEY(DIKI_L,                 'L');
 826         KEY(DIKI_M,                 'M');
 827         KEY(DIKI_N,                 'N');
 828         KEY(DIKI_O,                 'O');
 829         KEY(DIKI_P,                 'P');
 830         KEY(DIKI_Q,                 'Q');
 831         KEY(DIKI_R,                 'R');
 832         KEY(DIKI_S,                 'S');
 833         KEY(DIKI_T,                 'T');
 834         KEY(DIKI_U,                 'U');
 835         KEY(DIKI_V,                 'V');
 836         KEY(DIKI_W,                 'W');
 837         KEY(DIKI_X,                 'X');
 838         KEY(DIKI_Y,                 'Y');
 839         KEY(DIKI_Z,                 'Z');
 840
 841         KEY(DIKI_0,                 '0');
 842         KEY(DIKI_1,                 '1');
 843         KEY(DIKI_2,                 '2');
 844         KEY(DIKI_3,                 '3');
 845         KEY(DIKI_4,                 '4');
 846         KEY(DIKI_5,                 '5');
 847         KEY(DIKI_6,                 '6');
 848         KEY(DIKI_7,                 '7');
 849         KEY(DIKI_8,                 '8');
 850         KEY(DIKI_9,                 '9');
 851
 852         KEY(DIKI_F1,                WXK_F1);
 853         KEY(DIKI_F2,                WXK_F2);
 854         KEY(DIKI_F3,                WXK_F3);
 855         KEY(DIKI_F4,                WXK_F4);
 856         KEY(DIKI_F5,                WXK_F5);
 857         KEY(DIKI_F6,                WXK_F6);
 858         KEY(DIKI_F7,                WXK_F7);
 859         KEY(DIKI_F8,                WXK_F8);
 860         KEY(DIKI_F9,                WXK_F9);
 861         KEY(DIKI_F10,               WXK_F10);
 862         KEY(DIKI_F11,               WXK_F11);
 863         KEY(DIKI_F12,               WXK_F12);
 864
 865         KEY(DIKI_SHIFT_L,           WXK_SHIFT);
 866         KEY(DIKI_SHIFT_R,           WXK_SHIFT);
 867         KEY(DIKI_CONTROL_L,         WXK_CONTROL);
 868         KEY(DIKI_CONTROL_R,         WXK_CONTROL);
 869         KEY(DIKI_ALT_L,             WXK_ALT);
 870         KEY(DIKI_ALT_R,             WXK_ALT);
 871         // this key was removed in 0.9.25 but include it for previous versions
 872         // just to avoid gcc warnings about unhandled enum value in switch
 873 #if !wxCHECK_DFB_VERSION(0, 9, 24)
 874         KEY(DIKI_ALTGR,             0);
 875 #endif
 876         KEY(DIKI_META_L,            0);
 877         KEY(DIKI_META_R,            0);
 878         KEY(DIKI_SUPER_L,           0);
 879         KEY(DIKI_SUPER_R,           0);
 880         KEY(DIKI_HYPER_L,           0);
 881         KEY(DIKI_HYPER_R,           0);
 882
 883         KEY(DIKI_CAPS_LOCK,         0);
 884         KEY(DIKI_NUM_LOCK,          WXK_NUMLOCK);
 885         KEY(DIKI_SCROLL_LOCK,       0);
 886
 887         KEY(DIKI_ESCAPE,            WXK_ESCAPE);
 888         KEY(DIKI_LEFT,              WXK_LEFT);
 889         KEY(DIKI_RIGHT,             WXK_RIGHT);
 890         KEY(DIKI_UP,                WXK_UP);
 891         KEY(DIKI_DOWN,              WXK_DOWN);
 892         KEY(DIKI_TAB,               WXK_TAB);
 893         KEY(DIKI_ENTER,             WXK_RETURN);
 894         KEY(DIKI_SPACE,             WXK_SPACE);
 895         KEY(DIKI_BACKSPACE,         WXK_BACK);
 896         KEY(DIKI_INSERT,            WXK_INSERT);
 897         KEY(DIKI_DELETE,            WXK_DELETE);
 898         KEY(DIKI_HOME,              WXK_HOME);
 899         KEY(DIKI_END,               WXK_END);
 900         KEY(DIKI_PAGE_UP,           WXK_PAGEUP);
 901         KEY(DIKI_PAGE_DOWN,         WXK_PAGEDOWN);
 902         KEY(DIKI_PRINT,             WXK_PRINT);
 903         KEY(DIKI_PAUSE,             WXK_PAUSE);
 904
 905         KEY(DIKI_QUOTE_LEFT,        '`');
 906         KEY(DIKI_MINUS_SIGN,        '-');
 907         KEY(DIKI_EQUALS_SIGN,       '=');
 908         KEY(DIKI_BRACKET_LEFT,      '[');
 909         KEY(DIKI_BRACKET_RIGHT,     ']');
 910         KEY(DIKI_BACKSLASH,         '\\');
 911         KEY(DIKI_SEMICOLON,         ';');
 912         KEY(DIKI_QUOTE_RIGHT,       '\'');
 913         KEY(DIKI_COMMA,             ',');
 914         KEY(DIKI_PERIOD,            '.');
 915         KEY(DIKI_SLASH,             '/');
 916
 917         KEY(DIKI_LESS_SIGN,         '<');
 918
 919         KEY(DIKI_KP_DIV,            WXK_NUMPAD_DIVIDE);
 920         KEY(DIKI_KP_MULT,           WXK_NUMPAD_MULTIPLY);
 921         KEY(DIKI_KP_MINUS,          WXK_NUMPAD_SUBTRACT);
 922         KEY(DIKI_KP_PLUS,           WXK_NUMPAD_ADD);
 923         KEY(DIKI_KP_ENTER,          WXK_NUMPAD_ENTER);
 924         KEY(DIKI_KP_SPACE,          WXK_NUMPAD_SPACE);
 925         KEY(DIKI_KP_TAB,            WXK_NUMPAD_TAB);
 926         KEY(DIKI_KP_F1,             WXK_NUMPAD_F1);
 927         KEY(DIKI_KP_F2,             WXK_NUMPAD_F2);
 928         KEY(DIKI_KP_F3,             WXK_NUMPAD_F3);
 929         KEY(DIKI_KP_F4,             WXK_NUMPAD_F4);
 930         KEY(DIKI_KP_EQUAL,          WXK_NUMPAD_EQUAL);
 931         KEY(DIKI_KP_SEPARATOR,      WXK_NUMPAD_SEPARATOR);
 932
 933         KEY(DIKI_KP_DECIMAL,        WXK_NUMPAD_DECIMAL);
 934         KEY(DIKI_KP_0,              WXK_NUMPAD0);
 935         KEY(DIKI_KP_1,              WXK_NUMPAD1);
 936         KEY(DIKI_KP_2,              WXK_NUMPAD2);
 937         KEY(DIKI_KP_3,              WXK_NUMPAD3);
 938         KEY(DIKI_KP_4,              WXK_NUMPAD4);
 939         KEY(DIKI_KP_5,              WXK_NUMPAD5);
 940         KEY(DIKI_KP_6,              WXK_NUMPAD6);
 941         KEY(DIKI_KP_7,              WXK_NUMPAD7);
 942         KEY(DIKI_KP_8,              WXK_NUMPAD8);
 943         KEY(DIKI_KP_9,              WXK_NUMPAD9);
 944
 945         case DIKI_KEYDEF_END:
 946         case DIKI_NUMBER_OF_KEYS:
 947             wxFAIL_MSG( "invalid key_id value" );
 948             return 0;
 949     }
 950
 951     return 0; // silence compiler warnings
 952 }
 953
 954 // returns untranslated keycode, i.e. for EVT_CHAR, where characters are left in
 955 // the form they were entered (lowercase, diacritics etc.)
 956 static long GetUntraslatedKeyCode(DFBInputDeviceKeyIdentifier key_id,
 957                                   DFBInputDeviceKeySymbol key_symbol)
 958 {
 959     switch ( DFB_KEY_TYPE(key_symbol) )
 960     {
 961         case DIKT_UNICODE:
 962 #if wxUSE_UNICODE
 963             return key_symbol;
 964 #else
 965             if ( key_symbol < 128 )
 966                 return key_symbol;
 967             else
 968             {
 969 #if wxUSE_WCHAR_T
 970                 wchar_t chr = key_symbol;
 971                 wxCharBuffer buf(wxConvUI->cWC2MB(&chr, 1, NULL));
 972                 if ( buf )
 973                     return *buf; // may be 0 if failed
 974                 else
 975 #endif // wxUSE_WCHAR_T
 976                     return 0;
 977             }
 978 #endif
 979
 980         default:
 981             return GetTranslatedKeyCode(key_id);
 982     }
 983 }
 984
 985 #undef KEY
 986
 987 void wxWindowDFB::HandleKeyEvent(const wxDFBWindowEvent& event_)
 988 {
 989     if ( !IsEnabled() )
 990         return;
 991
 992     const DFBWindowEvent& e = event_;
 993
 994     wxLogTrace(TRACE_EVENTS,
 995                "handling key %s event for window %p ('%s')",
 996                e.type == DWET_KEYUP ? "up" : "down",
 997                this, GetName().c_str());
 998
 999     // fill in wxKeyEvent fields:
1000     wxKeyEvent event;
1001     event.SetEventObject(this);
1002     event.SetTimestamp(wxDFB_EVENT_TIMESTAMP(e));
1003     event.m_rawCode = e.key_code;
1004     event.m_keyCode = GetTranslatedKeyCode(e.key_id);
1005 #if wxUSE_UNICODE
1006     event.m_uniChar = e.key_symbol;
1007 #endif
1008     event.m_shiftDown = ( e.modifiers & DIMM_SHIFT ) != 0;
1009     event.m_controlDown = ( e.modifiers & DIMM_CONTROL ) != 0;
1010     event.m_altDown = ( e.modifiers & DIMM_ALT ) != 0;
1011     event.m_metaDown = ( e.modifiers & DIMM_META ) != 0;
1012
1013     // translate coordinates from TLW-relative to this window-relative:
1014     event.m_x = e.x;
1015     event.m_y = e.y;
1016     GetTLW()->ClientToScreen(&event.m_x, &event.m_y);
1017     this->ScreenToClient(&event.m_x, &event.m_y);
1018
1019     if ( e.type == DWET_KEYUP )
1020     {
1021         event.SetEventType(wxEVT_KEY_UP);
1022         HandleWindowEvent(event);
1023     }
1024     else
1025     {
1026         bool isTab = (event.m_keyCode == WXK_TAB);
1027
1028         event.SetEventType(wxEVT_KEY_DOWN);
1029
1030         if ( HandleWindowEvent(event) )
1031             return;
1032
1033         // only send wxEVT_CHAR event if not processed yet:
1034         event.m_keyCode = GetUntraslatedKeyCode(e.key_id, e.key_symbol);
1035         if ( event.m_keyCode != 0 )
1036         {
1037             event.SetEventType(wxEVT_CHAR);
1038             if ( HandleWindowEvent(event) )
1039                 return;
1040         }
1041
1042         // Synthetize navigation key event, but do it only if the TAB key
1043         // wasn't handled yet:
1044         if ( isTab && GetParent() && GetParent()->HasFlag(wxTAB_TRAVERSAL) )
1045         {
1046             wxNavigationKeyEvent navEvent;
1047             navEvent.SetEventObject(GetParent());
1048             // Shift-TAB goes in reverse direction:
1049             navEvent.SetDirection(!event.m_shiftDown);
1050             // Ctrl-TAB changes the (parent) window, i.e. switch notebook page:
1051             navEvent.SetWindowChange(event.m_controlDown);
1052             navEvent.SetCurrentFocus(wxStaticCast(this, wxWindow));
1053             GetParent()->HandleWindowEvent(navEvent);
1054         }
1055     }
1056 }
1057
1058 // ---------------------------------------------------------------------------
1059 // idle events processing
1060 // ---------------------------------------------------------------------------
1061
1062 void wxWindowDFB::OnInternalIdle()
1063 {
1064     if (wxUpdateUIEvent::CanUpdate(this) && IsShown())
1065         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
1066 }
1067
1068
1069 // Find the wxWindow at the current mouse position, returning the mouse
1070 // position.
1071 wxWindow* wxFindWindowAtPointer(wxPoint& pt)
1072 {
1073     return wxFindWindowAtPoint(pt = wxGetMousePosition());
1074 }
1075
1076 wxWindow* wxFindWindowAtPoint(const wxPoint& WXUNUSED(pt))
1077 {
1078     wxFAIL_MSG( "wxFindWindowAtPoint not implemented" );
1079     return NULL;
1080 }