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 _T("events")
  41 #define TRACE_PAINT  _T("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 // constructors and such
  77 // ----------------------------------------------------------------------------
  78
  79 void wxWindowDFB::Init()
  80 {
  81     m_isShown = true;
  82     m_frozenness = 0;
  83     m_tlw = NULL;
  84     m_overlays = NULL;
  85 }
  86
  87 // Destructor
  88 wxWindowDFB::~wxWindowDFB()
  89 {
  90     SendDestroyEvent();
  91
  92     m_isBeingDeleted = true;
  93
  94     if ( gs_mouseCapture == this )
  95         ReleaseMouse();
  96
  97     if ( gs_focusedWindow == this )
  98         DFBKillFocus();
  99
 100     DestroyChildren();
 101 }
 102
 103 // real construction (Init() must have been called before!)
 104 bool wxWindowDFB::Create(wxWindow *parent,
 105                          wxWindowID id,
 106                          const wxPoint& pos,
 107                          const wxSize& size,
 108                          long style,
 109                          const wxString& name)
 110 {
 111     if ( !m_tlw && parent )
 112         m_tlw = parent->GetTLW();
 113
 114     if ( !CreateBase(parent, id, pos, size, style, wxDefaultValidator, name) )
 115         return false;
 116
 117     if ( parent )
 118         parent->AddChild(this);
 119
 120     // set the size to something bogus initially, in case some code tries to
 121     // create wxWindowDC before SetSize() is called below:
 122     m_rect.width = m_rect.height = 1;
 123
 124     int x, y, w, h;
 125     x = pos.x, y = pos.y;
 126     if ( x == -1  ) x = 0;
 127     if ( y == -1 ) y = 0;
 128     w = WidthDefault(size.x);
 129     h = HeightDefault(size.y);
 130     SetSize(x, y, w, h);
 131
 132     return true;
 133 }
 134
 135 // ---------------------------------------------------------------------------
 136 // surface access
 137 // ---------------------------------------------------------------------------
 138
 139 wxIDirectFBSurfacePtr wxWindowDFB::ObtainDfbSurface() const
 140 {
 141     wxCHECK_MSG( m_parent, NULL, _T("parentless window?") );
 142
 143     wxIDirectFBSurfacePtr parentSurface(m_parent->GetDfbSurface());
 144     wxCHECK_MSG( parentSurface, NULL, _T("invalid parent surface") );
 145
 146     wxRect r(GetRect());
 147     AdjustForParentClientOrigin(r.x, r.y, 0);
 148     DFBRectangle rect = { r.x, r.y, r.width, r.height };
 149
 150     return parentSurface->GetSubSurface(&rect);
 151 }
 152
 153 wxIDirectFBSurfacePtr wxWindowDFB::GetDfbSurface()
 154 {
 155     if ( !m_surface )
 156     {
 157         m_surface = ObtainDfbSurface();
 158         wxASSERT_MSG( m_surface, _T("invalid DirectFB surface") );
 159     }
 160
 161     return m_surface;
 162 }
 163
 164 void wxWindowDFB::InvalidateDfbSurface()
 165 {
 166     m_surface = NULL;
 167
 168     // surfaces of the children are subsurfaces of this window's surface,
 169     // so they must be invalidated as well:
 170     wxWindowList& children = GetChildren();
 171     for ( wxWindowList::iterator i = children.begin(); i != children.end(); ++i )
 172     {
 173         (*i)->InvalidateDfbSurface();
 174     }
 175 }
 176
 177 // ---------------------------------------------------------------------------
 178 // basic operations
 179 // ---------------------------------------------------------------------------
 180
 181 void wxWindowDFB::SetFocus()
 182 {
 183     if ( gs_focusedWindow == this )
 184         return; // nothing to do, focused already
 185
 186     wxWindowDFB *oldFocusedWindow = gs_focusedWindow;
 187
 188     if ( gs_focusedWindow )
 189     {
 190         gs_toBeFocusedWindow = (wxWindow*)this;
 191         gs_focusedWindow->DFBKillFocus();
 192         gs_toBeFocusedWindow = NULL;
 193     }
 194
 195     gs_focusedWindow = this;
 196
 197     if ( IsShownOnScreen() )
 198     {
 199         m_tlw->SetDfbFocus();
 200     }
 201     // else: do nothing, because DirectFB windows cannot have focus if they
 202     //       are hidden; when the TLW becomes visible, it will set the focus
 203     //       to use from wxTLW::Show()
 204
 205     // notify the parent keeping track of focus for the kbd navigation
 206     // purposes that we got it
 207     wxChildFocusEvent eventFocus((wxWindow*)this);
 208     GetEventHandler()->ProcessEvent(eventFocus);
 209
 210     wxFocusEvent event(wxEVT_SET_FOCUS, GetId());
 211     event.SetEventObject(this);
 212     event.SetWindow((wxWindow*)oldFocusedWindow);
 213     GetEventHandler()->ProcessEvent(event);
 214
 215 #if wxUSE_CARET
 216     // caret needs to be informed about focus change
 217     wxCaret *caret = GetCaret();
 218     if ( caret )
 219         caret->OnSetFocus();
 220 #endif // wxUSE_CARET
 221 }
 222
 223 void wxWindowDFB::DFBKillFocus()
 224 {
 225     wxCHECK_RET( gs_focusedWindow == this,
 226                  _T("killing focus on window that doesn't have it") );
 227
 228     gs_focusedWindow = NULL;
 229
 230     if ( m_isBeingDeleted )
 231         return; // don't send any events from dtor
 232
 233 #if wxUSE_CARET
 234     // caret needs to be informed about focus change
 235     wxCaret *caret = GetCaret();
 236     if ( caret )
 237         caret->OnKillFocus();
 238 #endif // wxUSE_CARET
 239
 240     wxFocusEvent event(wxEVT_KILL_FOCUS, GetId());
 241     event.SetEventObject(this);
 242     event.SetWindow(gs_toBeFocusedWindow);
 243     GetEventHandler()->ProcessEvent(event);
 244 }
 245
 246 // ----------------------------------------------------------------------------
 247 // this wxWindowBase function is implemented here (in platform-specific file)
 248 // because it is static and so couldn't be made virtual
 249 // ----------------------------------------------------------------------------
 250 wxWindow *wxWindowBase::DoFindFocus()
 251 {
 252     return (wxWindow*)gs_focusedWindow;
 253 }
 254
 255 bool wxWindowDFB::Show(bool show)
 256 {
 257     if ( !wxWindowBase::Show(show) )
 258         return false;
 259
 260     // Unlike Refresh(), DoRefreshWindow() doesn't check visibility, so
 261     // call it to force refresh of either this window (if showing) or its
 262     // parent area at the place of this window (if hiding):
 263     DoRefreshWindow();
 264
 265     return true;
 266 }
 267
 268 // Raise the window to the top of the Z order
 269 void wxWindowDFB::Raise()
 270 {
 271     wxFAIL_MSG( _T("Raise() not implemented") );
 272 }
 273
 274 // Lower the window to the bottom of the Z order
 275 void wxWindowDFB::Lower()
 276 {
 277     wxFAIL_MSG( _T("Lower() not implemented") );
 278 }
 279
 280 void wxWindowDFB::DoCaptureMouse()
 281 {
 282 #warning "implement this"
 283 #if 0
 284     if ( gs_mouseCapture )
 285         DFB_wmUncaptureEvents(gs_mouseCapture->m_wnd, wxDFB_CAPTURE_MOUSE);
 286 #endif
 287     gs_mouseCapture = this;
 288 #if 0
 289     DFB_wmCaptureEvents(m_wnd, EVT_MOUSEEVT, wxDFB_CAPTURE_MOUSE);
 290 #endif
 291 }
 292
 293 void wxWindowDFB::DoReleaseMouse()
 294 {
 295     wxASSERT_MSG( gs_mouseCapture == this, wxT("attempt to release mouse, but this window hasn't captured it") );
 296
 297 #warning "implement this"
 298 #if 0
 299     DFB_wmUncaptureEvents(m_wnd, wxDFB_CAPTURE_MOUSE);
 300 #endif
 301     gs_mouseCapture = NULL;
 302 }
 303
 304 /* static */ wxWindow *wxWindowBase::GetCapture()
 305 {
 306     return (wxWindow*)gs_mouseCapture;
 307 }
 308
 309 bool wxWindowDFB::SetCursor(const wxCursor& cursor)
 310 {
 311     if ( !wxWindowBase::SetCursor(cursor) )
 312     {
 313         // no change
 314         return false;
 315     }
 316
 317 #warning "implement this"
 318 #if 0
 319     if ( m_cursor.Ok() )
 320         DFB_wmSetWindowCursor(m_wnd, *m_cursor.GetDFBCursor());
 321     else
 322         DFB_wmSetWindowCursor(m_wnd, *wxSTANDARD_CURSOR->GetDFBCursor());
 323 #endif
 324
 325     return true;
 326 }
 327
 328 void wxWindowDFB::WarpPointer(int x, int y)
 329 {
 330     int w, h;
 331     wxDisplaySize(&w, &h);
 332
 333     ClientToScreen(&x, &y);
 334     if ( x < 0 ) x = 0;
 335     if ( y < 0 ) y = 0;
 336     if ( x >= w ) x = w-1;
 337     if ( y >= h ) y = h-1;
 338
 339     wxIDirectFBDisplayLayerPtr layer(wxIDirectFB::Get()->GetDisplayLayer());
 340     wxCHECK_RET( layer, _T("no display layer") );
 341
 342     layer->WarpCursor(x, y);
 343 }
 344
 345 // Set this window to be the child of 'parent'.
 346 bool wxWindowDFB::Reparent(wxWindowBase *parent)
 347 {
 348     if ( !wxWindowBase::Reparent(parent) )
 349         return false;
 350
 351 #warning "implement this"
 352     wxFAIL_MSG( _T("reparenting not yet implemented") );
 353
 354     return true;
 355 }
 356
 357 // ---------------------------------------------------------------------------
 358 // moving and resizing
 359 // ---------------------------------------------------------------------------
 360
 361 // Get total size
 362 void wxWindowDFB::DoGetSize(int *x, int *y) const
 363 {
 364     if (x) *x = m_rect.width;
 365     if (y) *y = m_rect.height;
 366 }
 367
 368 void wxWindowDFB::DoGetPosition(int *x, int *y) const
 369 {
 370     if (x) *x = m_rect.x;
 371     if (y) *y = m_rect.y;
 372 }
 373
 374 static wxPoint GetScreenPosOfClientOrigin(const wxWindowDFB *win)
 375 {
 376     wxCHECK_MSG( win, wxPoint(0, 0), _T("no window provided") );
 377
 378     wxPoint pt(win->GetPosition() + win->GetClientAreaOrigin());
 379
 380     if ( !win->IsTopLevel() )
 381         pt += GetScreenPosOfClientOrigin(win->GetParent());
 382
 383     return pt;
 384 }
 385
 386 void wxWindowDFB::DoScreenToClient(int *x, int *y) const
 387 {
 388     wxPoint o = GetScreenPosOfClientOrigin(this);
 389
 390     if (x) *x -= o.x;
 391     if (y) *y -= o.y;
 392 }
 393
 394 void wxWindowDFB::DoClientToScreen(int *x, int *y) const
 395 {
 396     wxPoint o = GetScreenPosOfClientOrigin(this);
 397
 398     if (x) *x += o.x;
 399     if (y) *y += o.y;
 400 }
 401
 402 // Get size *available for subwindows* i.e. excluding menu bar etc.
 403 void wxWindowDFB::DoGetClientSize(int *x, int *y) const
 404 {
 405     DoGetSize(x, y);
 406 }
 407
 408 void wxWindowDFB::DoMoveWindow(int x, int y, int width, int height)
 409 {
 410     // NB: [x,y] arguments are in (parent's) window coordinates, while
 411     //     m_rect.{x,y} are in (parent's) client coordinates. That's why we
 412     //     offset by parentOrigin in some places below
 413
 414     wxPoint parentOrigin(0, 0);
 415     AdjustForParentClientOrigin(parentOrigin.x, parentOrigin.y);
 416
 417     wxRect oldpos(m_rect);
 418     oldpos.Offset(parentOrigin);
 419
 420     wxRect newpos(x, y, width, height);
 421
 422     // input [x,y] is in window coords, but we store client coords in m_rect:
 423     m_rect = newpos;
 424     m_rect.Offset(-parentOrigin);
 425
 426     // window's position+size changed and so did the subsurface that covers it
 427     InvalidateDfbSurface();
 428
 429     if ( IsShown() )
 430     {
 431         // queue both former and new position of the window for repainting:
 432         wxWindow *parent = GetParent();
 433
 434         // only refresh the visible parts:
 435         if ( !CanBeOutsideClientArea() )
 436         {
 437             wxRect parentClient(parent->GetClientSize());
 438             oldpos.Intersect(parentClient);
 439             newpos.Intersect(parentClient);
 440         }
 441
 442         parent->RefreshRect(oldpos);
 443         parent->RefreshRect(newpos);
 444     }
 445 }
 446
 447 // set the size of the window: if the dimensions are positive, just use them,
 448 // but if any of them is equal to -1, it means that we must find the value for
 449 // it ourselves (unless sizeFlags contains wxSIZE_ALLOW_MINUS_ONE flag, in
 450 // which case -1 is a valid value for x and y)
 451 //
 452 // If sizeFlags contains wxSIZE_AUTO_WIDTH/HEIGHT flags (default), we calculate
 453 // the width/height to best suit our contents, otherwise we reuse the current
 454 // width/height
 455 void wxWindowDFB::DoSetSize(int x, int y, int width, int height, int sizeFlags)
 456 {
 457     // get the current size and position...
 458     int currentX, currentY;
 459     GetPosition(&currentX, &currentY);
 460     int currentW,currentH;
 461     GetSize(&currentW, &currentH);
 462
 463     if ( x == -1 && !(sizeFlags & wxSIZE_ALLOW_MINUS_ONE) )
 464         x = currentX;
 465     if ( y == -1 && !(sizeFlags & wxSIZE_ALLOW_MINUS_ONE) )
 466         y = currentY;
 467
 468     // ... and don't do anything (avoiding flicker) if it's already ok
 469     if ( x == currentX && y == currentY &&
 470          width == currentW && height == currentH )
 471     {
 472         return;
 473     }
 474
 475     wxSize size(-1, -1);
 476     if ( width == -1 )
 477     {
 478         if ( sizeFlags & wxSIZE_AUTO_WIDTH )
 479         {
 480             size = DoGetBestSize();
 481             width = size.x;
 482         }
 483         else
 484         {
 485             // just take the current one
 486             width = currentW;
 487         }
 488     }
 489
 490     if ( height == -1 )
 491     {
 492         if ( sizeFlags & wxSIZE_AUTO_HEIGHT )
 493         {
 494             if ( size.x == -1 )
 495             {
 496                 size = DoGetBestSize();
 497             }
 498             //else: already called DoGetBestSize() above
 499
 500             height = size.y;
 501         }
 502         else
 503         {
 504             // just take the current one
 505             height = currentH;
 506         }
 507     }
 508
 509     int maxWidth = GetMaxWidth(),
 510         minWidth = GetMinWidth(),
 511         maxHeight = GetMaxHeight(),
 512         minHeight = GetMinHeight();
 513
 514     if ( minWidth != -1 && width < minWidth ) width = minWidth;
 515     if ( maxWidth != -1 && width > maxWidth ) width = maxWidth;
 516     if ( minHeight != -1 && height < minHeight ) height = minHeight;
 517     if ( maxHeight != -1 && height > maxHeight ) height = maxHeight;
 518
 519     if ( m_rect.x != x || m_rect.y != y ||
 520          m_rect.width != width || m_rect.height != height )
 521     {
 522         AdjustForParentClientOrigin(x, y, sizeFlags);
 523         DoMoveWindow(x, y, width, height);
 524
 525         wxSize newSize(width, height);
 526         wxSizeEvent event(newSize, GetId());
 527         event.SetEventObject(this);
 528         GetEventHandler()->ProcessEvent(event);
 529     }
 530 }
 531
 532 void wxWindowDFB::DoSetClientSize(int width, int height)
 533 {
 534     SetSize(width, height);
 535 }
 536
 537 // ---------------------------------------------------------------------------
 538 // text metrics
 539 // ---------------------------------------------------------------------------
 540
 541 int wxWindowDFB::GetCharHeight() const
 542 {
 543     wxWindowDC dc((wxWindow*)this);
 544     return dc.GetCharHeight();
 545 }
 546
 547 int wxWindowDFB::GetCharWidth() const
 548 {
 549     wxWindowDC dc((wxWindow*)this);
 550     return dc.GetCharWidth();
 551 }
 552
 553 void wxWindowDFB::GetTextExtent(const wxString& string,
 554                              int *x, int *y,
 555                              int *descent, int *externalLeading,
 556                              const wxFont *theFont) const
 557 {
 558     wxWindowDC dc((wxWindow*)this);
 559     dc.GetTextExtent(string, x, y, descent, externalLeading, (wxFont*)theFont);
 560 }
 561
 562
 563 // ---------------------------------------------------------------------------
 564 // painting
 565 // ---------------------------------------------------------------------------
 566
 567 void wxWindowDFB::Clear()
 568 {
 569     wxClientDC dc((wxWindow *)this);
 570     wxBrush brush(GetBackgroundColour(), wxSOLID);
 571     dc.SetBackground(brush);
 572     dc.Clear();
 573 }
 574
 575 void wxWindowDFB::Refresh(bool WXUNUSED(eraseBack), const wxRect *rect)
 576 {
 577     if ( !IsShown() || IsFrozen() )
 578         return;
 579
 580     // NB[1]: We intentionally ignore the eraseBack argument here. This is
 581     //        because of the way wxDFB's painting is implemented: the refresh
 582     //        request is propagated up to wxTLW, which is then painted in
 583     //        top-down order. This means that this window's area is first
 584     //        painted by its parent and this window is then painted over it, so
 585     //        it's not safe to not paint this window's background even if
 586     //        eraseBack=false.
 587     // NB[2]: wxWindow::Refresh() takes the rectangle in client coords, but
 588     //        wxUniv translates it to window coords before passing it to
 589     //        wxWindowDFB::Refresh(), so we can directly pass the rect to
 590     //        DoRefreshRect (which takes window, not client, coords) here.
 591     if ( rect )
 592         DoRefreshRect(*rect);
 593     else
 594         DoRefreshWindow();
 595 }
 596
 597 void wxWindowDFB::RefreshWindowRect(const wxRect& rect)
 598 {
 599     if ( !IsShown() || IsFrozen() )
 600         return;
 601
 602     DoRefreshRect(rect);
 603 }
 604
 605 void wxWindowDFB::DoRefreshWindow()
 606 {
 607     // NB: DoRefreshRect() takes window coords, not client, so this is correct
 608     DoRefreshRect(wxRect(GetSize()));
 609 }
 610
 611 void wxWindowDFB::DoRefreshRect(const wxRect& rect)
 612 {
 613     wxWindow *parent = GetParent();
 614     wxCHECK_RET( parent, _T("no parent") );
 615
 616     // don't overlap outside of the window (NB: 'rect' is in window coords):
 617     wxRect r(rect);
 618     r.Intersect(wxRect(GetSize()));
 619     if ( r.IsEmpty() )
 620         return;
 621
 622     wxLogTrace(TRACE_PAINT,
 623                _T("%p ('%s'): refresh rect [%i,%i,%i,%i]"),
 624                this, GetName().c_str(),
 625                rect.x, rect.y, rect.GetRight(), rect.GetBottom());
 626
 627     // convert the refresh rectangle to parent's coordinates and
 628     // recursively refresh the parent:
 629     r.Offset(GetPosition());
 630     r.Offset(parent->GetClientAreaOrigin());
 631
 632     // normal windows cannot extend out of its parent's client area, so don't
 633     // refresh any hidden parts:
 634     if ( !CanBeOutsideClientArea() )
 635         r.Intersect(parent->GetClientRect());
 636
 637     parent->DoRefreshRect(r);
 638 }
 639
 640 void wxWindowDFB::Update()
 641 {
 642     if ( !IsShown() || IsFrozen() )
 643         return;
 644
 645     GetParent()->Update();
 646 }
 647
 648 void wxWindowDFB::Freeze()
 649 {
 650     m_frozenness++;
 651 }
 652
 653 void wxWindowDFB::Thaw()
 654 {
 655     wxASSERT_MSG( IsFrozen(), _T("Thaw() without matching Freeze()") );
 656
 657     if ( --m_frozenness == 0 )
 658     {
 659         if ( IsShown() )
 660             DoRefreshWindow();
 661     }
 662 }
 663
 664 void wxWindowDFB::PaintWindow(const wxRect& rect)
 665 {
 666     wxCHECK_RET( !IsFrozen() && IsShown(), _T("shouldn't be called") );
 667
 668     wxLogTrace(TRACE_PAINT,
 669                _T("%p ('%s'): painting region [%i,%i,%i,%i]"),
 670                this, GetName().c_str(),
 671                rect.x, rect.y, rect.GetRight(), rect.GetBottom());
 672
 673     m_updateRegion = rect;
 674
 675     // FIXME_DFB: don't waste time rendering the area if it's fully covered
 676     //            by some children, go directly to rendering the children
 677
 678     // NB: unconditionally send wxEraseEvent, because our implementation of
 679     //     wxWindow::Refresh() ignores the eraseBack argument
 680     wxWindowDC dc((wxWindow*)this);
 681     wxEraseEvent eventEr(m_windowId, &dc);
 682     eventEr.SetEventObject(this);
 683     GetEventHandler()->ProcessEvent(eventEr);
 684
 685     wxRect clientRect(GetClientRect());
 686
 687     // only send wxNcPaintEvent if drawing at least part of nonclient area:
 688     if ( !clientRect.Contains(rect) )
 689     {
 690         wxNcPaintEvent eventNc(GetId());
 691         eventNc.SetEventObject(this);
 692         GetEventHandler()->ProcessEvent(eventNc);
 693     }
 694     else
 695     {
 696         wxLogTrace(TRACE_PAINT, _T("%p ('%s'): not sending wxNcPaintEvent"),
 697                    this, GetName().c_str());
 698     }
 699
 700     // only send wxPaintEvent if drawing at least part of client area:
 701     if ( rect.Intersects(clientRect) )
 702     {
 703         wxPaintEvent eventPt(GetId());
 704         eventPt.SetEventObject(this);
 705         GetEventHandler()->ProcessEvent(eventPt);
 706     }
 707     else
 708     {
 709         wxLogTrace(TRACE_PAINT, _T("%p ('%s'): not sending wxPaintEvent"),
 710                    this, GetName().c_str());
 711     }
 712
 713     // draw window's overlays on top of the painted window, if we have any:
 714     PaintOverlays(rect);
 715
 716     m_updateRegion.Clear();
 717
 718     // client area portion of 'rect':
 719     wxRect rectClientOnly(rect);
 720     rectClientOnly.Intersect(clientRect);
 721
 722     // paint the children:
 723     wxPoint origin = GetClientAreaOrigin();
 724     wxWindowList& children = GetChildren();
 725     for ( wxWindowList::iterator i = children.begin();
 726           i != children.end(); ++i )
 727     {
 728         wxWindow *child = *i;
 729
 730         if ( child->IsFrozen() || !child->IsShown() )
 731             continue; // don't paint anything if the window is frozen or hidden
 732
 733         // compute child's area to repaint
 734         wxRect childrect(child->GetRect());
 735         childrect.Offset(origin);
 736
 737         if ( child->CanBeOutsideClientArea() )
 738             childrect.Intersect(rect);
 739         else
 740             childrect.Intersect(rectClientOnly);
 741
 742         if ( childrect.IsEmpty() )
 743             continue;
 744
 745         // and repaint it:
 746         childrect.Offset(-child->GetPosition());
 747         childrect.Offset(-origin);
 748         child->PaintWindow(childrect);
 749     }
 750 }
 751
 752 void wxWindowDFB::PaintOverlays(const wxRect& rect)
 753 {
 754     if ( !m_overlays )
 755         return;
 756
 757     for ( wxDfbOverlaysList::const_iterator i = m_overlays->begin();
 758           i != m_overlays->end(); ++i )
 759     {
 760         wxOverlayImpl *overlay = *i;
 761
 762         wxRect orectOrig(overlay->GetRect());
 763         wxRect orect(orectOrig);
 764         orect.Intersect(rect);
 765         if ( orect.IsEmpty() )
 766             continue;
 767
 768         if ( overlay->IsEmpty() )
 769             continue; // nothing to paint
 770
 771         DFBRectangle dfbRect = { orect.x - orectOrig.x, orect.y - orectOrig.y,
 772                                  orect.width, orect.height };
 773         GetDfbSurface()->Blit
 774                          (
 775                            overlay->GetDirectFBSurface(),
 776                            &dfbRect,
 777                            orect.x, orect.y
 778                          );
 779     }
 780 }
 781
 782 void wxWindowDFB::AddOverlay(wxOverlayImpl *overlay)
 783 {
 784     if ( !m_overlays )
 785         m_overlays = new wxDfbOverlaysList;
 786
 787     m_overlays->Add(overlay);
 788 }
 789
 790 void wxWindowDFB::RemoveOverlay(wxOverlayImpl *overlay)
 791 {
 792     wxCHECK_RET( m_overlays, _T("no overlays to remove") );
 793
 794     m_overlays->Remove(overlay);
 795
 796     if ( m_overlays->empty() )
 797     {
 798         wxDELETE(m_overlays);
 799     }
 800
 801     if ( !m_isBeingDeleted )
 802         RefreshWindowRect(overlay->GetRect());
 803 }
 804
 805
 806 // ---------------------------------------------------------------------------
 807 // events handling
 808 // ---------------------------------------------------------------------------
 809
 810 #define KEY(dfb, wx)                                                \
 811     case dfb:                                                       \
 812           wxLogTrace(TRACE_EVENTS,                                  \
 813                      _T("key " #dfb " mapped to " #wx));            \
 814           return wx
 815
 816 // returns translated keycode, i.e. the one for KEYUP/KEYDOWN where 'a'..'z' is
 817 // translated to 'A'..'Z'
 818 static long GetTranslatedKeyCode(DFBInputDeviceKeyIdentifier key_id)
 819 {
 820     switch ( key_id )
 821     {
 822         KEY(DIKI_UNKNOWN,           0);
 823
 824         KEY(DIKI_A,                 'A');
 825         KEY(DIKI_B,                 'B');
 826         KEY(DIKI_C,                 'C');
 827         KEY(DIKI_D,                 'D');
 828         KEY(DIKI_E,                 'E');
 829         KEY(DIKI_F,                 'F');
 830         KEY(DIKI_G,                 'G');
 831         KEY(DIKI_H,                 'H');
 832         KEY(DIKI_I,                 'I');
 833         KEY(DIKI_J,                 'J');
 834         KEY(DIKI_K,                 'K');
 835         KEY(DIKI_L,                 'L');
 836         KEY(DIKI_M,                 'M');
 837         KEY(DIKI_N,                 'N');
 838         KEY(DIKI_O,                 'O');
 839         KEY(DIKI_P,                 'P');
 840         KEY(DIKI_Q,                 'Q');
 841         KEY(DIKI_R,                 'R');
 842         KEY(DIKI_S,                 'S');
 843         KEY(DIKI_T,                 'T');
 844         KEY(DIKI_U,                 'U');
 845         KEY(DIKI_V,                 'V');
 846         KEY(DIKI_W,                 'W');
 847         KEY(DIKI_X,                 'X');
 848         KEY(DIKI_Y,                 'Y');
 849         KEY(DIKI_Z,                 'Z');
 850
 851         KEY(DIKI_0,                 '0');
 852         KEY(DIKI_1,                 '1');
 853         KEY(DIKI_2,                 '2');
 854         KEY(DIKI_3,                 '3');
 855         KEY(DIKI_4,                 '4');
 856         KEY(DIKI_5,                 '5');
 857         KEY(DIKI_6,                 '6');
 858         KEY(DIKI_7,                 '7');
 859         KEY(DIKI_8,                 '8');
 860         KEY(DIKI_9,                 '9');
 861
 862         KEY(DIKI_F1,                WXK_F1);
 863         KEY(DIKI_F2,                WXK_F2);
 864         KEY(DIKI_F3,                WXK_F3);
 865         KEY(DIKI_F4,                WXK_F4);
 866         KEY(DIKI_F5,                WXK_F5);
 867         KEY(DIKI_F6,                WXK_F6);
 868         KEY(DIKI_F7,                WXK_F7);
 869         KEY(DIKI_F8,                WXK_F8);
 870         KEY(DIKI_F9,                WXK_F9);
 871         KEY(DIKI_F10,               WXK_F10);
 872         KEY(DIKI_F11,               WXK_F11);
 873         KEY(DIKI_F12,               WXK_F12);
 874
 875         KEY(DIKI_SHIFT_L,           WXK_SHIFT);
 876         KEY(DIKI_SHIFT_R,           WXK_SHIFT);
 877         KEY(DIKI_CONTROL_L,         WXK_CONTROL);
 878         KEY(DIKI_CONTROL_R,         WXK_CONTROL);
 879         KEY(DIKI_ALT_L,             WXK_ALT);
 880         KEY(DIKI_ALT_R,             WXK_ALT);
 881         // this key was removed in 0.9.25 but include it for previous versions
 882         // just to avoid gcc warnings about unhandled enum value in switch
 883 #if !wxCHECK_DFB_VERSION(0, 9, 24)
 884         KEY(DIKI_ALTGR,             0);
 885 #endif
 886         KEY(DIKI_META_L,            0);
 887         KEY(DIKI_META_R,            0);
 888         KEY(DIKI_SUPER_L,           0);
 889         KEY(DIKI_SUPER_R,           0);
 890         KEY(DIKI_HYPER_L,           0);
 891         KEY(DIKI_HYPER_R,           0);
 892
 893         KEY(DIKI_CAPS_LOCK,         0);
 894         KEY(DIKI_NUM_LOCK,          WXK_NUMLOCK);
 895         KEY(DIKI_SCROLL_LOCK,       0);
 896
 897         KEY(DIKI_ESCAPE,            WXK_ESCAPE);
 898         KEY(DIKI_LEFT,              WXK_LEFT);
 899         KEY(DIKI_RIGHT,             WXK_RIGHT);
 900         KEY(DIKI_UP,                WXK_UP);
 901         KEY(DIKI_DOWN,              WXK_DOWN);
 902         KEY(DIKI_TAB,               WXK_TAB);
 903         KEY(DIKI_ENTER,             WXK_RETURN);
 904         KEY(DIKI_SPACE,             WXK_SPACE);
 905         KEY(DIKI_BACKSPACE,         WXK_BACK);
 906         KEY(DIKI_INSERT,            WXK_INSERT);
 907         KEY(DIKI_DELETE,            WXK_DELETE);
 908         KEY(DIKI_HOME,              WXK_HOME);
 909         KEY(DIKI_END,               WXK_END);
 910         KEY(DIKI_PAGE_UP,           WXK_PAGEUP);
 911         KEY(DIKI_PAGE_DOWN,         WXK_PAGEDOWN);
 912         KEY(DIKI_PRINT,             WXK_PRINT);
 913         KEY(DIKI_PAUSE,             WXK_PAUSE);
 914
 915         KEY(DIKI_QUOTE_LEFT,        '`');
 916         KEY(DIKI_MINUS_SIGN,        '-');
 917         KEY(DIKI_EQUALS_SIGN,       '=');
 918         KEY(DIKI_BRACKET_LEFT,      '[');
 919         KEY(DIKI_BRACKET_RIGHT,     ']');
 920         KEY(DIKI_BACKSLASH,         '\\');
 921         KEY(DIKI_SEMICOLON,         ';');
 922         KEY(DIKI_QUOTE_RIGHT,       '\'');
 923         KEY(DIKI_COMMA,             ',');
 924         KEY(DIKI_PERIOD,            '.');
 925         KEY(DIKI_SLASH,             '/');
 926
 927         KEY(DIKI_LESS_SIGN,         '<');
 928
 929         KEY(DIKI_KP_DIV,            WXK_NUMPAD_DIVIDE);
 930         KEY(DIKI_KP_MULT,           WXK_NUMPAD_MULTIPLY);
 931         KEY(DIKI_KP_MINUS,          WXK_NUMPAD_SUBTRACT);
 932         KEY(DIKI_KP_PLUS,           WXK_NUMPAD_ADD);
 933         KEY(DIKI_KP_ENTER,          WXK_NUMPAD_ENTER);
 934         KEY(DIKI_KP_SPACE,          WXK_NUMPAD_SPACE);
 935         KEY(DIKI_KP_TAB,            WXK_NUMPAD_TAB);
 936         KEY(DIKI_KP_F1,             WXK_NUMPAD_F1);
 937         KEY(DIKI_KP_F2,             WXK_NUMPAD_F2);
 938         KEY(DIKI_KP_F3,             WXK_NUMPAD_F3);
 939         KEY(DIKI_KP_F4,             WXK_NUMPAD_F4);
 940         KEY(DIKI_KP_EQUAL,          WXK_NUMPAD_EQUAL);
 941         KEY(DIKI_KP_SEPARATOR,      WXK_NUMPAD_SEPARATOR);
 942
 943         KEY(DIKI_KP_DECIMAL,        WXK_NUMPAD_DECIMAL);
 944         KEY(DIKI_KP_0,              WXK_NUMPAD0);
 945         KEY(DIKI_KP_1,              WXK_NUMPAD1);
 946         KEY(DIKI_KP_2,              WXK_NUMPAD2);
 947         KEY(DIKI_KP_3,              WXK_NUMPAD3);
 948         KEY(DIKI_KP_4,              WXK_NUMPAD4);
 949         KEY(DIKI_KP_5,              WXK_NUMPAD5);
 950         KEY(DIKI_KP_6,              WXK_NUMPAD6);
 951         KEY(DIKI_KP_7,              WXK_NUMPAD7);
 952         KEY(DIKI_KP_8,              WXK_NUMPAD8);
 953         KEY(DIKI_KP_9,              WXK_NUMPAD9);
 954
 955         case DIKI_KEYDEF_END:
 956         case DIKI_NUMBER_OF_KEYS:
 957             wxFAIL_MSG( _T("invalid key_id value") );
 958             return 0;
 959     }
 960
 961     return 0; // silence compiler warnings
 962 }
 963
 964 // returns untranslated keycode, i.e. for EVT_CHAR, where characters are left in
 965 // the form they were entered (lowercase, diacritics etc.)
 966 static long GetUntraslatedKeyCode(DFBInputDeviceKeyIdentifier key_id,
 967                                   DFBInputDeviceKeySymbol key_symbol)
 968 {
 969     switch ( DFB_KEY_TYPE(key_symbol) )
 970     {
 971         case DIKT_UNICODE:
 972 #if wxUSE_UNICODE
 973             return key_symbol;
 974 #else
 975             if ( key_symbol < 128 )
 976                 return key_symbol;
 977             else
 978             {
 979 #if wxUSE_WCHAR_T
 980                 wchar_t chr = key_symbol;
 981                 wxCharBuffer buf(wxConvUI->cWC2MB(&chr, 1, NULL));
 982                 if ( buf )
 983                     return *buf; // may be 0 if failed
 984                 else
 985 #endif // wxUSE_WCHAR_T
 986                     return 0;
 987             }
 988 #endif
 989
 990         default:
 991             return GetTranslatedKeyCode(key_id);
 992     }
 993 }
 994
 995 #undef KEY
 996
 997 void wxWindowDFB::HandleKeyEvent(const wxDFBWindowEvent& event_)
 998 {
 999     if ( !IsEnabled() )
1000         return;
1001
1002     const DFBWindowEvent& e = event_;
1003
1004     wxLogTrace(TRACE_EVENTS,
1005                _T("handling key %s event for window %p ('%s')"),
1006                e.type == DWET_KEYUP ? _T("up") : _T("down"),
1007                this, GetName().c_str());
1008
1009     // fill in wxKeyEvent fields:
1010     wxKeyEvent event;
1011     event.SetEventObject(this);
1012     event.SetTimestamp(wxDFB_EVENT_TIMESTAMP(e));
1013     event.m_rawCode = e.key_code;
1014     event.m_keyCode = GetTranslatedKeyCode(e.key_id);
1015     event.m_scanCode = 0; // not used by wx at all
1016 #if wxUSE_UNICODE
1017     event.m_uniChar = e.key_symbol;
1018 #endif
1019     event.m_shiftDown = ( e.modifiers & DIMM_SHIFT ) != 0;
1020     event.m_controlDown = ( e.modifiers & DIMM_CONTROL ) != 0;
1021     event.m_altDown = ( e.modifiers & DIMM_ALT ) != 0;
1022     event.m_metaDown = ( e.modifiers & DIMM_META ) != 0;
1023
1024     // translate coordinates from TLW-relative to this window-relative:
1025     event.m_x = e.x;
1026     event.m_y = e.y;
1027     GetTLW()->ClientToScreen(&event.m_x, &event.m_y);
1028     this->ScreenToClient(&event.m_x, &event.m_y);
1029
1030     if ( e.type == DWET_KEYUP )
1031     {
1032         event.SetEventType(wxEVT_KEY_UP);
1033         GetEventHandler()->ProcessEvent(event);
1034     }
1035     else
1036     {
1037         bool isTab = (event.m_keyCode == WXK_TAB);
1038
1039         event.SetEventType(wxEVT_KEY_DOWN);
1040
1041         if ( GetEventHandler()->ProcessEvent(event) )
1042             return;
1043
1044         // only send wxEVT_CHAR event if not processed yet:
1045         event.m_keyCode = GetUntraslatedKeyCode(e.key_id, e.key_symbol);
1046         if ( event.m_keyCode != 0 )
1047         {
1048             event.SetEventType(wxEVT_CHAR);
1049             if ( GetEventHandler()->ProcessEvent(event) )
1050                 return;
1051         }
1052
1053         // Synthetize navigation key event, but do it only if the TAB key
1054         // wasn't handled yet:
1055         if ( isTab && GetParent() && GetParent()->HasFlag(wxTAB_TRAVERSAL) )
1056         {
1057             wxNavigationKeyEvent navEvent;
1058             navEvent.SetEventObject(GetParent());
1059             // Shift-TAB goes in reverse direction:
1060             navEvent.SetDirection(!event.m_shiftDown);
1061             // Ctrl-TAB changes the (parent) window, i.e. switch notebook page:
1062             navEvent.SetWindowChange(event.m_controlDown);
1063             navEvent.SetCurrentFocus(wxStaticCast(this, wxWindow));
1064             GetParent()->GetEventHandler()->ProcessEvent(navEvent);
1065         }
1066     }
1067 }
1068
1069 // ---------------------------------------------------------------------------
1070 // idle events processing
1071 // ---------------------------------------------------------------------------
1072
1073 void wxWindowDFB::OnInternalIdle()
1074 {
1075     if (wxUpdateUIEvent::CanUpdate(this))
1076         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
1077 }
1078
1079
1080 // Find the wxWindow at the current mouse position, returning the mouse
1081 // position.
1082 wxWindow* wxFindWindowAtPointer(wxPoint& pt)
1083 {
1084     return wxFindWindowAtPoint(pt = wxGetMousePosition());
1085 }
1086
1087 wxWindow* wxFindWindowAtPoint(const wxPoint& pt)
1088 {
1089     wxFAIL_MSG( _T("wxFindWindowAtPoint not implemented") );
1090     return NULL;
1091 }