src/motif/window.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        windows.cpp
   3 // Purpose:     wxWindow
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     17/09/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "window.h"
  22 #endif
  23
  24 #include "wx/setup.h"
  25 #include "wx/menu.h"
  26 #include "wx/dc.h"
  27 #include "wx/dcclient.h"
  28 #include "wx/utils.h"
  29 #include "wx/app.h"
  30 #include "wx/panel.h"
  31 #include "wx/layout.h"
  32 #include "wx/dialog.h"
  33 #include "wx/listbox.h"
  34 #include "wx/button.h"
  35 #include "wx/settings.h"
  36 #include "wx/msgdlg.h"
  37 #include "wx/frame.h"
  38 #include "wx/scrolwin.h"
  39 #include "wx/module.h"
  40 #include "wx/menuitem.h"
  41 #include "wx/log.h"
  42
  43 #include "wx/listimpl.cpp"
  44
  45 #if  wxUSE_DRAG_AND_DROP
  46     #include "wx/dnd.h"
  47 #endif
  48
  49 #include <Xm/Xm.h>
  50
  51 #include <Xm/DrawingA.h>
  52 #include <Xm/ScrolledW.h>
  53 #include <Xm/ScrollBar.h>
  54 #include <Xm/Frame.h>
  55 #include <Xm/Label.h>
  56
  57 #include "wx/motif/private.h"
  58
  59 #include <string.h>
  60
  61 // ----------------------------------------------------------------------------
  62 // constants
  63 // ----------------------------------------------------------------------------
  64
  65 static const int SCROLL_MARGIN = 4;
  66
  67 // ----------------------------------------------------------------------------
  68 // global variables for this module
  69 // ----------------------------------------------------------------------------
  70
  71 extern wxHashTable *wxWidgetHashTable;
  72
  73 // ----------------------------------------------------------------------------
  74 // private functions
  75 // ----------------------------------------------------------------------------
  76
  77 static void wxCanvasRepaintProc(Widget, XtPointer, XmDrawingAreaCallbackStruct * cbs);
  78 static void wxCanvasInputEvent(Widget drawingArea, XtPointer data, XmDrawingAreaCallbackStruct * cbs);
  79 static void wxCanvasMotionEvent(Widget, XButtonEvent * event);
  80 static void wxCanvasEnterLeave(Widget drawingArea, XtPointer clientData, XCrossingEvent * event);
  81 static void wxScrollBarCallback(Widget widget, XtPointer clientData,
  82                                 XmScaleCallbackStruct *cbs);
  83 static void wxPanelItemEventHandler(Widget    wid,
  84                                     XtPointer client_data,
  85                                     XEvent*   event,
  86                                     Boolean  *continueToDispatch);
  87
  88 // unused for now
  89 #if 0
  90
  91 // Helper function for 16-bit fonts
  92 static int str16len(const char *s)
  93 {
  94     int count = 0;
  95
  96     while (s[0] && s[1]) {
  97         count++;
  98         s += 2;
  99     }
 100
 101     return count;
 102 }
 103
 104 #endif // 0
 105
 106 // ----------------------------------------------------------------------------
 107 // macros
 108 // ----------------------------------------------------------------------------
 109
 110 #define event_left_is_down(x) ((x)->xbutton.state & Button1Mask)
 111 #define event_middle_is_down(x) ((x)->xbutton.state & Button2Mask)
 112 #define event_right_is_down(x) ((x)->xbutton.state & Button3Mask)
 113
 114 // ----------------------------------------------------------------------------
 115 // event tables
 116 // ----------------------------------------------------------------------------
 117
 118 #if !USE_SHARED_LIBRARY
 119     IMPLEMENT_DYNAMIC_CLASS(wxWindow, wxEvtHandler)
 120
 121     BEGIN_EVENT_TABLE(wxWindow, wxEvtHandler)
 122         EVT_SYS_COLOUR_CHANGED(wxWindow::OnSysColourChanged)
 123         EVT_IDLE(wxWindow::OnIdle)
 124     END_EVENT_TABLE()
 125 #endif // USE_SHARED_LIBRARY
 126
 127 // ============================================================================
 128 // implementation
 129 // ============================================================================
 130
 131 // ----------------------------------------------------------------------------
 132 // list types
 133 // ----------------------------------------------------------------------------
 134
 135 WX_DEFINE_LIST(wxRectList);
 136
 137 // ----------------------------------------------------------------------------
 138 // helper functions
 139 // ----------------------------------------------------------------------------
 140
 141 void wxWindow::UnmanageAndDestroy(WXWidget widget)
 142 {
 143     Widget w = (Widget)widget;
 144     if ( w )
 145     {
 146         XtUnmanageChild(w);
 147         XtDestroyWidget(w);
 148     }
 149 }
 150
 151 bool wxWindow::MapOrUnmap(WXWidget widget, bool map)
 152 {
 153     Widget w = (Widget)widget;
 154     if ( !w )
 155         return FALSE;
 156
 157     if ( map )
 158         XtMapWidget(w);
 159     else
 160         XtUnmapWidget(w);
 161
 162     return TRUE;
 163 }
 164
 165 // ----------------------------------------------------------------------------
 166 // constructors
 167 // ----------------------------------------------------------------------------
 168
 169 void wxWindow::Init()
 170 {
 171     // generic initializations first
 172     InitBase();
 173
 174     // Motif-specific
 175     m_needsRefresh = TRUE;
 176     m_mainWidget = (WXWidget) 0;
 177
 178     m_button1Pressed =
 179     m_button2Pressed =
 180     m_button3Pressed = FALSE;
 181
 182     m_winCaptured = FALSE;
 183
 184     m_isShown = TRUE;
 185
 186     m_hScrollBar =
 187     m_vScrollBar =
 188     m_borderWidget =
 189     m_scrolledWindow =
 190     m_drawingArea = (WXWidget) 0;
 191
 192     m_hScroll =
 193     m_vScroll = FALSE;
 194
 195     m_scrollPosX =
 196     m_scrollPosY = 0;
 197
 198     m_backingPixmap = (WXPixmap) 0;
 199     m_pixmapWidth =
 200     m_pixmapHeight = 0;
 201
 202     m_pixmapOffsetX =
 203     m_pixmapOffsetY = 0;
 204
 205     m_lastTS = 0;
 206     m_lastButton = 0;
 207     m_canAddEventHandler = FALSE;
 208 }
 209
 210 // real construction (Init() must have been called before!)
 211 bool wxWindow::Create(wxWindow *parent, wxWindowID id,
 212                       const wxPoint& pos,
 213                       const wxSize& size,
 214                       long style,
 215                       const wxString& name)
 216 {
 217     wxCHECK_MSG( parent, FALSE, "can't create wxWindow without parent" );
 218
 219     CreateBase(parent, id, pos, size, style, name);
 220
 221     parent->AddChild(this);
 222
 223     m_backgroundColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE);
 224     m_foregroundColour = *wxBLACK;
 225
 226     //// TODO: we should probably optimize by only creating a
 227     //// a drawing area if we have one or more scrollbars (wxVSCROLL/wxHSCROLL).
 228     //// But for now, let's simplify things by always creating the
 229     //// drawing area, since otherwise the translations are different.
 230
 231     // New translations for getting mouse motion feedback
 232     static const String translations =
 233 "<Btn1Motion>: wxCanvasMotionEvent() DrawingAreaInput() ManagerGadgetButtonMotion()\n\
 234 <Btn2Motion>: wxCanvasMotionEvent() DrawingAreaInput() ManagerGadgetButtonMotion()\n\
 235 <Btn3Motion>: wxCanvasMotionEvent() DrawingAreaInput() ManagerGadgetButtonMotion()\n\
 236 <BtnMotion>: wxCanvasMotionEvent() DrawingAreaInput() ManagerGadgetButtonMotion()\n\
 237 <Btn1Down>: DrawingAreaInput() ManagerGadgetArm()\n\
 238 <Btn2Down>: DrawingAreaInput() ManagerGadgetArm()\n\
 239 <Btn3Down>: DrawingAreaInput() ManagerGadgetArm()\n\
 240 <Btn1Up>: DrawingAreaInput() ManagerGadgetActivate()\n\
 241 <Btn2Up>: DrawingAreaInput() ManagerGadgetActivate()\n\
 242 <Btn3Up>: DrawingAreaInput() ManagerGadgetActivate()\n\
 243 <Motion>: wxCanvasMotionEvent() DrawingAreaInput()\n\
 244 <EnterWindow>: wxCanvasMotionEvent() DrawingAreaInput()\n\
 245 <LeaveWindow>: wxCanvasMotionEvent() DrawingAreaInput()\n\
 246 <Key>: DrawingAreaInput()";
 247
 248     XtActionsRec actions[1];
 249     actions[0].string = "wxCanvasMotionEvent";
 250     actions[0].proc = (XtActionProc) wxCanvasMotionEvent;
 251     XtAppAddActions ((XtAppContext) wxTheApp->GetAppContext(), actions, 1);
 252
 253     Widget parentWidget = (Widget) parent->GetClientWidget();
 254     if (style & wxBORDER)
 255     {
 256         m_borderWidget = (WXWidget)XtVaCreateManagedWidget
 257                                    (
 258                                     "canvasBorder",
 259                                     xmFrameWidgetClass, parentWidget,
 260                                     XmNshadowType, XmSHADOW_IN,
 261                                     NULL
 262                                    );
 263     }
 264
 265     m_scrolledWindow = (WXWidget)XtVaCreateManagedWidget
 266                                  (
 267                                   "scrolledWindow",
 268                                   xmScrolledWindowWidgetClass,
 269                                   m_borderWidget ? (Widget) m_borderWidget
 270                                                  : parentWidget,
 271                                   XmNresizePolicy, XmRESIZE_NONE,
 272                                   XmNspacing, 0,
 273                                   XmNscrollingPolicy, XmAPPLICATION_DEFINED,
 274                                   //XmNscrollBarDisplayPolicy, XmAS_NEEDED,
 275                                   NULL
 276                                  );
 277
 278     XtTranslations ptr = XtParseTranslationTable(translations);
 279     m_drawingArea = (WXWidget)XtVaCreateWidget
 280                               (
 281                                name,
 282                                xmDrawingAreaWidgetClass, (Widget) m_scrolledWindow,
 283                                XmNunitType, XmPIXELS,
 284                                // XmNresizePolicy, XmRESIZE_ANY,
 285                                XmNresizePolicy, XmRESIZE_NONE,
 286                                XmNmarginHeight, 0,
 287                                XmNmarginWidth, 0,
 288                                XmNtranslations, ptr,
 289                                NULL
 290                               );
 291     XtFree((char *) ptr);
 292
 293 #if 0
 294     if (GetWindowStyleFlag() & wxOVERRIDE_KEY_TRANSLATIONS)
 295     {
 296         ptr = XtParseTranslationTable ("<Key>: DrawingAreaInput()");
 297         XtOverrideTranslations ((Widget) m_drawingArea, ptr);
 298         XtFree ((char *) ptr);
 299     }
 300 #endif // 0
 301
 302     wxAddWindowToTable((Widget) m_drawingArea, this);
 303     wxAddWindowToTable((Widget) m_scrolledWindow, this);
 304
 305     // This order is very important in Motif 1.2.1
 306     XtRealizeWidget ((Widget) m_scrolledWindow);
 307     XtRealizeWidget ((Widget) m_drawingArea);
 308     XtManageChild ((Widget) m_drawingArea);
 309
 310     ptr = XtParseTranslationTable("<Configure>: resize()");
 311     XtOverrideTranslations((Widget) m_drawingArea, ptr);
 312     XtFree ((char *) ptr);
 313
 314     XtAddCallback ((Widget) m_drawingArea, XmNexposeCallback, (XtCallbackProc) wxCanvasRepaintProc, (XtPointer) this);
 315     XtAddCallback ((Widget) m_drawingArea, XmNinputCallback, (XtCallbackProc) wxCanvasInputEvent, (XtPointer) this);
 316
 317     // TODO?
 318 #if 0
 319     display = XtDisplay (scrolledWindow);
 320     xwindow = XtWindow (drawingArea);
 321 #endif // 0
 322
 323     XtAddEventHandler(
 324                       (Widget)m_drawingArea,
 325                        PointerMotionHintMask | EnterWindowMask |
 326                        LeaveWindowMask | FocusChangeMask,
 327                        False,
 328                        (XtEventHandler) wxCanvasEnterLeave,
 329                        (XtPointer) this
 330                      );
 331
 332     // Scrolled widget needs to have its colour changed or we get a little blue
 333     // square where the scrollbars abutt
 334     wxColour backgroundColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE);
 335     DoChangeBackgroundColour(m_scrolledWindow, backgroundColour, TRUE);
 336     DoChangeBackgroundColour(m_drawingArea, backgroundColour, TRUE);
 337
 338     XmScrolledWindowSetAreas(
 339                              (Widget)m_scrolledWindow,
 340                              (Widget) 0, (Widget) 0,
 341                              (Widget) m_drawingArea);
 342
 343 #if 0
 344     if (m_hScrollBar)
 345         XtRealizeWidget ((Widget) m_hScrollBar);
 346     if (m_vScrollBar)
 347         XtRealizeWidget ((Widget) m_vScrollBar);
 348 #endif // 0
 349
 350     // Without this, the cursor may not be restored properly (e.g. in splitter
 351     // sample).
 352     SetCursor(*wxSTANDARD_CURSOR);
 353     SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
 354     SetSize(pos.x, pos.y, size.x, size.y);
 355
 356     return TRUE;
 357 }
 358
 359 // Destructor
 360 wxWindow::~wxWindow()
 361 {
 362     // Motif-specific actions first
 363     WXWidget wMain = GetMainWidget();
 364     if ( wMain )
 365     {
 366         // Removes event handlers
 367         DetachWidget(wMain);
 368     }
 369
 370     ClearUpdateRects();
 371
 372     // If m_drawingArea, we're a fully-fledged window with drawing area,
 373     // scrollbars etc. (what wxCanvas used to be)
 374     if ( m_drawingArea )
 375     {
 376         // Destroy children before destroying self
 377         DestroyChildren();
 378
 379         if (m_backingPixmap)
 380             XFreePixmap (XtDisplay ((Widget) GetMainWidget()), (Pixmap) m_backingPixmap);
 381
 382         Widget w = (Widget) m_drawingArea;
 383         wxDeleteWindowFromTable(w);
 384
 385         if (w)
 386         {
 387             XtDestroyWidget(w);
 388         }
 389
 390         m_mainWidget = (WXWidget) 0;
 391
 392         // Only if we're _really_ a canvas (not a dialog box/panel)
 393         if (m_scrolledWindow)
 394         {
 395             wxDeleteWindowFromTable((Widget) m_scrolledWindow);
 396         }
 397
 398         UnmanageAndDestroy(m_hScrollBar);
 399         UnmanageAndDestroy(m_vScrollBar);
 400         UnmanageAndDestroy(m_scrolledWindow);
 401
 402         if (m_borderWidget)
 403         {
 404             XtDestroyWidget ((Widget) m_borderWidget);
 405             m_borderWidget = (WXWidget) 0;
 406         }
 407     }
 408
 409     // Destroy the window
 410     if (GetMainWidget())
 411     {
 412         // If this line (XtDestroyWidget) causes a crash, you may comment it out.
 413         // Child widgets will get destroyed automatically when a frame
 414         // or dialog is destroyed, but before that you may get some memory
 415         // leaks and potential layout problems if you delete and then add
 416         // child windows.
 417         XtDestroyWidget((Widget) GetMainWidget());
 418         SetMainWidget((WXWidget) NULL);
 419     }
 420 }
 421
 422 // ----------------------------------------------------------------------------
 423 // scrollbar management
 424 // ----------------------------------------------------------------------------
 425
 426 // Helper function
 427 void wxWindow::CreateScrollbar(wxOrientation orientation)
 428 {
 429     wxCHECK_RET( m_drawingArea, "this window can't have scrollbars" );
 430
 431     XtVaSetValues((Widget) m_scrolledWindow, XmNresizePolicy, XmRESIZE_NONE, NULL);
 432
 433     // Add scrollbars if required
 434     if (orientation == wxHORIZONTAL)
 435     {
 436         Widget hScrollBar = XtVaCreateManagedWidget ("hsb",
 437             xmScrollBarWidgetClass, (Widget) m_scrolledWindow,
 438             XmNorientation, XmHORIZONTAL,
 439             NULL);
 440         //      XtAddCallback (hScrollBar, XmNvalueChangedCallback, (XtCallbackProc) wxScrollBarCallback, (XtPointer) XmHORIZONTAL);
 441         XtAddCallback (hScrollBar, XmNdragCallback, (XtCallbackProc) wxScrollBarCallback, (XtPointer) XmHORIZONTAL);
 442         XtAddCallback (hScrollBar, XmNincrementCallback, (XtCallbackProc) wxScrollBarCallback, (XtPointer) XmHORIZONTAL);
 443         XtAddCallback (hScrollBar, XmNdecrementCallback, (XtCallbackProc) wxScrollBarCallback, (XtPointer) XmHORIZONTAL);
 444         XtAddCallback (hScrollBar, XmNpageIncrementCallback, (XtCallbackProc) wxScrollBarCallback, (XtPointer) XmHORIZONTAL);
 445         XtAddCallback (hScrollBar, XmNpageDecrementCallback, (XtCallbackProc) wxScrollBarCallback, (XtPointer) XmHORIZONTAL);
 446         XtAddCallback (hScrollBar, XmNtoTopCallback, (XtCallbackProc) wxScrollBarCallback, (XtPointer) XmHORIZONTAL);
 447         XtAddCallback (hScrollBar, XmNtoBottomCallback, (XtCallbackProc) wxScrollBarCallback, (XtPointer) XmHORIZONTAL);
 448
 449         XtVaSetValues (hScrollBar,
 450             XmNincrement, 1,
 451             XmNvalue, 0,
 452             NULL);
 453
 454         m_hScrollBar = (WXWidget) hScrollBar;
 455
 456         wxColour backgroundColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE);
 457         DoChangeBackgroundColour(m_hScrollBar, backgroundColour, TRUE);
 458
 459         XtRealizeWidget(hScrollBar);
 460
 461         XtVaSetValues((Widget) m_scrolledWindow,
 462             XmNhorizontalScrollBar, (Widget) m_hScrollBar,
 463             NULL);
 464
 465         m_hScroll = TRUE;
 466     }
 467
 468     if (orientation == wxVERTICAL)
 469     {
 470         Widget vScrollBar = XtVaCreateManagedWidget ("vsb",
 471             xmScrollBarWidgetClass, (Widget) m_scrolledWindow,
 472             XmNorientation, XmVERTICAL,
 473             NULL);
 474         //      XtAddCallback (vScrollBar, XmNvalueChangedCallback, (XtCallbackProc) wxScrollBarCallback, (XtPointer) XmVERTICAL);
 475         XtAddCallback (vScrollBar, XmNdragCallback, (XtCallbackProc) wxScrollBarCallback, (XtPointer) XmVERTICAL);
 476         XtAddCallback (vScrollBar, XmNincrementCallback, (XtCallbackProc) wxScrollBarCallback, (XtPointer) XmVERTICAL);
 477         XtAddCallback (vScrollBar, XmNdecrementCallback, (XtCallbackProc) wxScrollBarCallback, (XtPointer) XmVERTICAL);
 478         XtAddCallback (vScrollBar, XmNpageIncrementCallback, (XtCallbackProc) wxScrollBarCallback, (XtPointer) XmVERTICAL);
 479         XtAddCallback (vScrollBar, XmNpageDecrementCallback, (XtCallbackProc) wxScrollBarCallback, (XtPointer) XmVERTICAL);
 480         XtAddCallback (vScrollBar, XmNtoTopCallback, (XtCallbackProc) wxScrollBarCallback, (XtPointer) XmVERTICAL);
 481         XtAddCallback (vScrollBar, XmNtoBottomCallback, (XtCallbackProc) wxScrollBarCallback, (XtPointer) XmVERTICAL);
 482
 483         XtVaSetValues (vScrollBar,
 484             XmNincrement, 1,
 485             XmNvalue, 0,
 486             NULL);
 487
 488         m_vScrollBar = (WXWidget) vScrollBar;
 489         wxColour backgroundColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE);
 490         DoChangeBackgroundColour(m_vScrollBar, backgroundColour, TRUE);
 491
 492         XtRealizeWidget(vScrollBar);
 493
 494         XtVaSetValues((Widget) m_scrolledWindow,
 495             XmNverticalScrollBar, (Widget) m_vScrollBar,
 496             NULL);
 497
 498         m_vScroll = TRUE;
 499     }
 500
 501     XtVaSetValues((Widget) m_scrolledWindow, XmNresizePolicy, XmRESIZE_ANY, NULL);
 502 }
 503
 504 void wxWindow::DestroyScrollbar(wxOrientation orientation)
 505 {
 506     wxCHECK_RET( m_drawingArea, "this window can't have scrollbars" );
 507
 508     XtVaSetValues((Widget) m_scrolledWindow, XmNresizePolicy, XmRESIZE_NONE, NULL);
 509     // Add scrollbars if required
 510     if (orientation == wxHORIZONTAL)
 511     {
 512         if (m_hScrollBar)
 513         {
 514             XtDestroyWidget((Widget) m_hScrollBar);
 515         }
 516         m_hScrollBar = (WXWidget) 0;
 517         m_hScroll = FALSE;
 518
 519         XtVaSetValues((Widget) m_scrolledWindow,
 520             XmNhorizontalScrollBar, (Widget) 0,
 521             NULL);
 522
 523     }
 524
 525     if (orientation == wxVERTICAL)
 526     {
 527         if (m_vScrollBar)
 528         {
 529             XtDestroyWidget((Widget) m_vScrollBar);
 530         }
 531         m_vScrollBar = (WXWidget) 0;
 532         m_vScroll = TRUE;
 533
 534         XtVaSetValues((Widget) m_scrolledWindow,
 535             XmNverticalScrollBar, (Widget) 0,
 536             NULL);
 537
 538     }
 539     XtVaSetValues((Widget) m_scrolledWindow, XmNresizePolicy, XmRESIZE_ANY, NULL);
 540 }
 541
 542 // ---------------------------------------------------------------------------
 543 // basic operations
 544 // ---------------------------------------------------------------------------
 545
 546 void wxWindow::SetFocus()
 547 {
 548     Widget wMain = (Widget) GetMainWidget();
 549     XmProcessTraversal(wMain, XmTRAVERSE_CURRENT);
 550     XmProcessTraversal((Widget) GetMainWidget(), XmTRAVERSE_CURRENT);
 551 }
 552
 553 // Get the window with the focus
 554 wxWindow *wxWindowBase::FindFocus()
 555 {
 556     // TODO Problems:
 557     // (1) Can there be multiple focussed widgets in an application?
 558     // In which case we need to find the top-level window that's
 559     // currently active.
 560     // (2) The widget with the focus may not be in the widget table
 561     // depending on which widgets I put in the table
 562     wxWindow *winFocus = (wxWindow *)NULL;
 563     for ( wxWindowList::Node *node = wxTopLevelWindows.GetFirst();
 564           node;
 565           node = node->GetNext() )
 566     {
 567         wxWindow *win = node->GetData();
 568
 569         Widget w = XmGetFocusWidget ((Widget) win->GetTopWidget());
 570
 571         if (w != (Widget) NULL)
 572         {
 573             winFocus = wxGetWindowFromTable(w);
 574             if ( winFocus )
 575                 break;
 576         }
 577     }
 578
 579     return winFocus;
 580 }
 581
 582 bool wxWindow::Enable(bool enable)
 583 {
 584     if ( !wxWindowBase::Enable(enable) )
 585         return FALSE;
 586
 587     Widget wMain = (Widget)GetMainWidget();
 588     if ( wMain )
 589     {
 590         XtSetSensitive(wMain, enable);
 591         XmUpdateDisplay(wMain);
 592     }
 593
 594     return TRUE;
 595 }
 596
 597 bool wxWindow::Show(bool show)
 598 {
 599     if ( !wxWindowBase::Show(show) )
 600         return FALSE;
 601
 602     if (m_borderWidget || m_scrolledWindow)
 603     {
 604         MapOrUnmap(m_drawingArea, show);
 605         MapOrUnmap(m_borderWidget ? m_borderWidget : m_scrolledWindow, show);
 606     }
 607     else
 608     {
 609         if ( !MapOrUnmap(GetTopWidget(), show) )
 610             MapOrUnmap(GetMainWidget(), show);
 611     }
 612
 613 #if 0
 614     Window xwin = (Window) GetXWindow();
 615     Display *xdisp = (Display*) GetXDisplay();
 616     if (show)
 617         XMapWindow(xdisp, xwin);
 618     else
 619         XUnmapWindow(xdisp, xwin);
 620 #endif
 621
 622     return TRUE;
 623 }
 624
 625 // Raise the window to the top of the Z order
 626 void wxWindow::Raise()
 627 {
 628     Widget wTop = (Widget) GetTopWidget();
 629     Window window = XtWindow(wTop);
 630     XRaiseWindow(XtDisplay(wTop), window);
 631 }
 632
 633 // Lower the window to the bottom of the Z order
 634 void wxWindow::Lower()
 635 {
 636     Widget wTop = (Widget) GetTopWidget();
 637     Window window = XtWindow(wTop);
 638     XLowerWindow(XtDisplay(wTop), window);
 639 }
 640
 641 void wxWindow::SetTitle(const wxString& title)
 642 {
 643     XtVaSetValues((Widget)GetMainWidget(), XmNtitle, title.c_str(), NULL);
 644 }
 645
 646 wxString wxWindow::GetTitle() const
 647 {
 648     char *title;
 649     XtVaGetValues((Widget)GetMainWidget(), XmNtitle, &title, NULL);
 650
 651     return wxString(title);
 652 }
 653
 654 void wxWindow::CaptureMouse()
 655 {
 656     if ( m_winCaptured )
 657         return;
 658
 659     Widget wMain = (Widget)GetMainWidget();
 660     if ( wMain )
 661         XtAddGrab(wMain, TRUE, FALSE);
 662
 663     m_winCaptured = TRUE;
 664 }
 665
 666 void wxWindow::ReleaseMouse()
 667 {
 668     if ( !m_winCaptured )
 669         return;
 670
 671     Widget wMain = (Widget)GetMainWidget();
 672     if ( wMain )
 673         XtRemoveGrab(wMain);
 674
 675     m_winCaptured = FALSE;
 676 }
 677
 678 bool wxWindow::SetFont(const wxFont& font)
 679 {
 680     if ( !wxWindowBase::SetFont(font) )
 681     {
 682         // nothing to do
 683         return FALSE;
 684     }
 685
 686     ChangeFont();
 687
 688     return TRUE;
 689 }
 690
 691 bool wxWindow::SetCursor(const wxCursor& cursor)
 692 {
 693     if ( !wxWindowBase::SetCursor(cursor) )
 694     {
 695         // no change
 696         return FALSE;
 697     }
 698
 699     wxASSERT_MSG( m_cursor.Ok(),
 700                   _T("cursor must be valid after call to the base version"));
 701
 702     WXDisplay *dpy = GetXDisplay();
 703     WXCursor x_cursor = m_cursor.GetXCursor(dpy);
 704
 705     Widget w = (Widget) GetMainWidget();
 706     Window win = XtWindow(w);
 707     XDefineCursor((Display*) dpy, win, (Cursor) x_cursor);
 708
 709     return TRUE;
 710 }
 711
 712 // Coordinates relative to the window
 713 void wxWindow::WarpPointer (int x, int y)
 714 {
 715     Widget wClient = (Widget)GetClientWidget();
 716
 717     XWarpPointer(XtDisplay(wClient), None, XtWindow(wClient), 0, 0, 0, 0, x, y);
 718 }
 719
 720 // ---------------------------------------------------------------------------
 721 // scrolling stuff
 722 // ---------------------------------------------------------------------------
 723
 724 int wxWindow::GetScrollPos(int orient) const
 725 {
 726     if (orient == wxHORIZONTAL)
 727         return m_scrollPosX;
 728     else
 729         return m_scrollPosY;
 730
 731 #if 0
 732     Widget scrollBar = (Widget) ((orient == wxHORIZONTAL) ? m_hScrollBar : m_vScrollBar);
 733     if (scrollBar)
 734     {
 735         int pos;
 736         XtVaGetValues(scrollBar, XmNvalue, &pos, NULL);
 737         return pos;
 738     }
 739     else
 740         return 0;
 741 #endif // 0
 742 }
 743
 744 // This now returns the whole range, not just the number of positions that we
 745 // can scroll.
 746 int wxWindow::GetScrollRange(int orient) const
 747 {
 748     Widget scrollBar = (Widget)GetScrollbar((wxOrientation)orient);
 749     wxCHECK_MSG( scrollBar, 0, "no such scrollbar" );
 750
 751     int range;
 752     XtVaGetValues(scrollBar, XmNmaximum, &range, NULL);
 753     return range;
 754 }
 755
 756 int wxWindow::GetScrollThumb(int orient) const
 757 {
 758     Widget scrollBar = (Widget)GetScrollbar((wxOrientation)orient);
 759     wxCHECK_MSG( scrollBar, 0, "no such scrollbar" );
 760
 761     int thumb;
 762     XtVaGetValues(scrollBar, XmNsliderSize, &thumb, NULL);
 763     return thumb;
 764 }
 765
 766 void wxWindow::SetScrollPos(int orient, int pos, bool WXUNUSED(refresh))
 767 {
 768     Widget scrollBar = (Widget)GetScrollbar((wxOrientation)orient);
 769
 770     if ( scrollBar )
 771     {
 772         XtVaSetValues (scrollBar, XmNvalue, pos, NULL);
 773     }
 774
 775     SetInternalScrollPos((wxOrientation)orient, pos);
 776 }
 777
 778 // New function that will replace some of the above.
 779 void wxWindow::SetScrollbar(int orient, int pos, int thumbVisible,
 780                             int range, bool WXUNUSED(refresh))
 781 {
 782     int oldW, oldH;
 783     GetSize(& oldW, & oldH);
 784
 785     if (range == 0)
 786         range = 1;
 787     if (thumbVisible == 0)
 788         thumbVisible = 1;
 789
 790     if (thumbVisible > range)
 791         thumbVisible = range;
 792
 793     // Save the old state to see if it changed
 794     WXWidget oldScrollBar = GetScrollbar((wxOrientation)orient);
 795
 796     if (orient == wxHORIZONTAL)
 797     {
 798         if (thumbVisible == range)
 799         {
 800             if (m_hScrollBar)
 801                 DestroyScrollbar(wxHORIZONTAL);
 802         }
 803         else
 804         {
 805             if (!m_hScrollBar)
 806                 CreateScrollbar(wxHORIZONTAL);
 807         }
 808     }
 809     if (orient == wxVERTICAL)
 810     {
 811         if (thumbVisible == range)
 812         {
 813             if (m_vScrollBar)
 814                 DestroyScrollbar(wxVERTICAL);
 815         }
 816         else
 817         {
 818             if (!m_vScrollBar)
 819                 CreateScrollbar(wxVERTICAL);
 820         }
 821     }
 822     WXWidget newScrollBar =  GetScrollbar((wxOrientation)orient);
 823
 824     if (oldScrollBar != newScrollBar)
 825     {
 826         // This is important! Without it, scrollbars misbehave badly.
 827         XtUnrealizeWidget((Widget) m_scrolledWindow);
 828         XmScrolledWindowSetAreas ((Widget) m_scrolledWindow, (Widget) m_hScrollBar, (Widget) m_vScrollBar, (Widget) m_drawingArea);
 829         XtRealizeWidget((Widget) m_scrolledWindow);
 830         XtManageChild((Widget) m_scrolledWindow);
 831     }
 832
 833     if (newScrollBar)
 834     {
 835         XtVaSetValues((Widget) newScrollBar,
 836         XmNvalue, pos,
 837         XmNminimum, 0,
 838         XmNmaximum, range,
 839         XmNsliderSize, thumbVisible,
 840         NULL);
 841     }
 842
 843     SetInternalScrollPos((wxOrientation)orient, pos);
 844
 845     int newW, newH;
 846     GetSize(& newW, & newH);
 847
 848     // Adjusting scrollbars can resize the canvas accidentally
 849     if (newW != oldW || newH != oldH)
 850         SetSize(-1, -1, oldW, oldH);
 851 }
 852
 853 // Does a physical scroll
 854 void wxWindow::ScrollWindow(int dx, int dy, const wxRect *rect)
 855 {
 856     int x, y, w, h;
 857     if (rect)
 858     {
 859         // Use specified rectangle
 860         x = rect->x; y = rect->y; w = rect->width; h = rect->height;
 861     }
 862     else
 863     {
 864         // Use whole client area
 865         x = 0; y = 0;
 866         GetClientSize(& w, & h);
 867     }
 868
 869     int x1 = (dx >= 0) ? x : x - dx;
 870     int y1 = (dy >= 0) ? y : y - dy;
 871     int w1 = w - abs(dx);
 872     int h1 = h - abs(dy);
 873     int x2 = (dx >= 0) ? x + dx : x;
 874     int y2 = (dy >= 0) ? y + dy : y;
 875
 876     wxClientDC dc(this);
 877
 878     dc.SetLogicalFunction (wxCOPY);
 879
 880     Widget widget = (Widget) GetMainWidget();
 881     Window window = XtWindow(widget);
 882     Display* display = XtDisplay(widget);
 883
 884     XCopyArea(display, window, window, (GC) dc.GetGC(),
 885               x1, y1, w1, h1, x2, y2);
 886
 887     dc.SetAutoSetting(TRUE);
 888     wxBrush brush(GetBackgroundColour(), wxSOLID);
 889     dc.SetBrush(brush); // FIXME: needed?
 890
 891     // We'll add rectangles to the list of update rectangles according to which
 892     // bits we've exposed.
 893     wxList updateRects;
 894
 895     if (dx > 0)
 896     {
 897         wxRect *rect = new wxRect;
 898         rect->x = x;
 899         rect->y = y;
 900         rect->width = dx;
 901         rect->height = h;
 902
 903         XFillRectangle(display, window,
 904             (GC) dc.GetGC(), rect->x, rect->y, rect->width, rect->height);
 905
 906         rect->x = rect->x;
 907         rect->y = rect->y;
 908         rect->width = rect->width;
 909         rect->height = rect->height;
 910
 911         updateRects.Append((wxObject*) rect);
 912     }
 913     else if (dx < 0)
 914     {
 915         wxRect *rect = new wxRect;
 916
 917         rect->x = x + w + dx;
 918         rect->y = y;
 919         rect->width = -dx;
 920         rect->height = h;
 921
 922         XFillRectangle(display, window,
 923             (GC) dc.GetGC(), rect->x, rect->y, rect->width,
 924             rect->height);
 925
 926         rect->x = rect->x;
 927         rect->y = rect->y;
 928         rect->width = rect->width;
 929         rect->height = rect->height;
 930
 931         updateRects.Append((wxObject*) rect);
 932     }
 933     if (dy > 0)
 934     {
 935         wxRect *rect = new wxRect;
 936
 937         rect->x = x;
 938         rect->y = y;
 939         rect->width = w;
 940         rect->height = dy;
 941
 942         XFillRectangle(display, window,
 943             (GC) dc.GetGC(), rect->x, rect->y, rect->width, rect->height);
 944
 945         rect->x = rect->x;
 946         rect->y = rect->y;
 947         rect->width = rect->width;
 948         rect->height = rect->height;
 949
 950         updateRects.Append((wxObject*) rect);
 951     }
 952     else if (dy < 0)
 953     {
 954         wxRect *rect = new wxRect;
 955
 956         rect->x = x;
 957         rect->y = y + h + dy;
 958         rect->width = w;
 959         rect->height = -dy;
 960
 961         XFillRectangle(display, window,
 962             (GC) dc.GetGC(), rect->x, rect->y, rect->width, rect->height);
 963
 964         rect->x = rect->x;
 965         rect->y = rect->y;
 966         rect->width = rect->width;
 967         rect->height = rect->height;
 968
 969         updateRects.Append((wxObject*) rect);
 970     }
 971     dc.SetBrush(wxNullBrush);
 972
 973     // Now send expose events
 974
 975     wxNode* node = updateRects.First();
 976     while (node)
 977     {
 978         wxRect* rect = (wxRect*) node->Data();
 979         XExposeEvent event;
 980
 981         event.type = Expose;
 982         event.display = display;
 983         event.send_event = True;
 984         event.window = window;
 985
 986         event.x = rect->x;
 987         event.y = rect->y;
 988         event.width = rect->width;
 989         event.height = rect->height;
 990
 991         event.count = 0;
 992
 993         XSendEvent(display, window, False, ExposureMask, (XEvent *)&event);
 994
 995         node = node->Next();
 996
 997     }
 998
 999     // Delete the update rects
1000     node = updateRects.First();
1001     while (node)
1002     {
1003         wxRect* rect = (wxRect*) node->Data();
1004         delete rect;
1005         node = node->Next();
1006     }
1007
1008     XmUpdateDisplay((Widget) GetMainWidget());
1009 }
1010
1011 // ---------------------------------------------------------------------------
1012 // drag and drop
1013 // ---------------------------------------------------------------------------
1014
1015 #if wxUSE_DRAG_AND_DROP
1016
1017 void wxWindow::SetDropTarget(wxDropTarget * WXUNUSED(pDropTarget))
1018 {
1019     // TODO
1020 }
1021
1022 #endif
1023
1024 // Old style file-manager drag&drop
1025 void wxWindow::DragAcceptFiles(bool WXUNUSED(accept))
1026 {
1027     // TODO
1028 }
1029
1030 // ----------------------------------------------------------------------------
1031 // tooltips
1032 // ----------------------------------------------------------------------------
1033
1034 #if wxUSE_TOOLTIPS
1035
1036 void wxWindow::DoSetToolTip(wxToolTip * WXUNUSED(tooltip))
1037 {
1038     // TODO
1039 }
1040
1041 #endif // wxUSE_TOOLTIPS
1042
1043 // ---------------------------------------------------------------------------
1044 // moving and resizing
1045 // ---------------------------------------------------------------------------
1046
1047 bool wxWindow::PreResize()
1048 {
1049     return TRUE;
1050 }
1051
1052 // Get total size
1053 void wxWindow::DoGetSize(int *x, int *y) const
1054 {
1055     if (m_drawingArea)
1056     {
1057         CanvasGetSize(x, y);
1058         return;
1059     }
1060
1061     Widget widget = (Widget) GetTopWidget();
1062     Dimension xx, yy;
1063     XtVaGetValues(widget, XmNwidth, &xx, XmNheight, &yy, NULL);
1064     *x = xx; *y = yy;
1065 }
1066
1067 void wxWindow::DoGetPosition(int *x, int *y) const
1068 {
1069     if (m_drawingArea)
1070     {
1071         CanvasGetPosition(x, y);
1072         return;
1073     }
1074     Widget widget = (Widget) GetTopWidget();
1075     Position xx, yy;
1076     XtVaGetValues(widget, XmNx, &xx, XmNy, &yy, NULL);
1077
1078     // We may be faking the client origin. So a window that's really at (0, 30)
1079     // may appear (to wxWin apps) to be at (0, 0).
1080     if (GetParent())
1081     {
1082         wxPoint pt(GetParent()->GetClientAreaOrigin());
1083         xx -= pt.x;
1084         yy -= pt.y;
1085     }
1086
1087     *x = xx; *y = yy;
1088 }
1089
1090 void wxWindow::DoScreenToClient(int *x, int *y) const
1091 {
1092     Widget widget = (Widget) GetClientWidget();
1093     Display *display = XtDisplay((Widget) GetMainWidget());
1094     Window rootWindow = RootWindowOfScreen(XtScreen(widget));
1095     Window thisWindow = XtWindow(widget);
1096
1097     Window childWindow;
1098     int xx = *x;
1099     int yy = *y;
1100     XTranslateCoordinates(display, rootWindow, thisWindow, xx, yy, x, y, &childWindow);
1101 }
1102
1103 void wxWindow::DoClientToScreen(int *x, int *y) const
1104 {
1105     Widget widget = (Widget) GetClientWidget();
1106     Display *display = XtDisplay(widget);
1107     Window rootWindow = RootWindowOfScreen(XtScreen(widget));
1108     Window thisWindow = XtWindow(widget);
1109
1110     Window childWindow;
1111     int xx = *x;
1112     int yy = *y;
1113     XTranslateCoordinates(display, thisWindow, rootWindow, xx, yy, x, y, &childWindow);
1114 }
1115
1116
1117 // Get size *available for subwindows* i.e. excluding menu bar etc.
1118 void wxWindow::DoGetClientSize(int *x, int *y) const
1119 {
1120     Widget widget = (Widget) GetClientWidget();
1121     Dimension xx, yy;
1122     XtVaGetValues(widget, XmNwidth, &xx, XmNheight, &yy, NULL);
1123     *x = xx; *y = yy;
1124 }
1125
1126 void wxWindow::DoSetSize(int x, int y, int width, int height, int sizeFlags)
1127 {
1128     // A bit of optimization to help sort out the flickers.
1129     int oldX, oldY, oldW, oldH;
1130     GetSize(& oldW, & oldH);
1131     GetPosition(& oldX, & oldY);
1132
1133     bool useOldPos = FALSE;
1134     bool useOldSize = FALSE;
1135
1136     if ((x == -1) && (x == -1) && ((sizeFlags & wxSIZE_ALLOW_MINUS_ONE) == 0))
1137         useOldPos = TRUE;
1138     else if (x == oldX && y == oldY)
1139         useOldPos = TRUE;
1140
1141     if ((width == -1) && (height == -1))
1142         useOldSize = TRUE;
1143     else if (width == oldW && height == oldH)
1144         useOldSize = TRUE;
1145
1146     if (!wxNoOptimize::CanOptimize())
1147     {
1148         useOldSize = FALSE; useOldPos = FALSE;
1149     }
1150
1151     if (useOldPos && useOldSize)
1152         return;
1153
1154     if (m_drawingArea)
1155     {
1156         CanvasSetSize(x, y, width, height, sizeFlags);
1157         return;
1158     }
1159     Widget widget = (Widget) GetTopWidget();
1160     if (!widget)
1161         return;
1162
1163     bool managed = XtIsManaged( widget );
1164     if (managed)
1165         XtUnmanageChild(widget);
1166
1167     int xx = x; int yy = y;
1168     AdjustForParentClientOrigin(xx, yy, sizeFlags);
1169
1170     if (!useOldPos)
1171     {
1172         if (x > -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
1173             XtVaSetValues(widget, XmNx, xx, NULL);
1174         if (y > -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
1175             XtVaSetValues(widget, XmNy, yy, NULL);
1176     }
1177     if (!useOldSize)
1178     {
1179         if (width > -1)
1180             XtVaSetValues(widget, XmNwidth, width, NULL);
1181         if (height > -1)
1182             XtVaSetValues(widget, XmNheight, height, NULL);
1183     }
1184
1185     if (managed)
1186         XtManageChild(widget);
1187
1188     // How about this bit. Maybe we don't need to generate size events
1189     // all the time -- they'll be generated when the window is sized anyway.
1190 #if 0
1191     wxSizeEvent sizeEvent(wxSize(width, height), GetId());
1192     sizeEvent.SetEventObject(this);
1193
1194       GetEventHandler()->ProcessEvent(sizeEvent);
1195 #endif // 0
1196 }
1197
1198 void wxWindow::DoSetClientSize(int width, int height)
1199 {
1200     if (m_drawingArea)
1201     {
1202         CanvasSetClientSize(width, height);
1203         return;
1204     }
1205
1206     Widget widget = (Widget) GetTopWidget();
1207
1208     if (width > -1)
1209         XtVaSetValues(widget, XmNwidth, width, NULL);
1210     if (height > -1)
1211         XtVaSetValues(widget, XmNheight, height, NULL);
1212
1213     wxSizeEvent sizeEvent(wxSize(width, height), GetId());
1214     sizeEvent.SetEventObject(this);
1215
1216     GetEventHandler()->ProcessEvent(sizeEvent);
1217 }
1218
1219 // For implementation purposes - sometimes decorations make the client area
1220 // smaller
1221 wxPoint wxWindow::GetClientAreaOrigin() const
1222 {
1223     return wxPoint(0, 0);
1224 }
1225
1226 // Makes an adjustment to the window position (for example, a frame that has
1227 // a toolbar that it manages itself).
1228 void wxWindow::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags)
1229 {
1230     if (((sizeFlags & wxSIZE_NO_ADJUSTMENTS) == 0) && GetParent())
1231     {
1232         wxPoint pt(GetParent()->GetClientAreaOrigin());
1233         x += pt.x; y += pt.y;
1234     }
1235 }
1236
1237 void wxWindow::SetSizeHints(int minW, int minH, int maxW, int maxH, int incW, int incH)
1238 {
1239     m_minWidth = minW;
1240     m_minHeight = minH;
1241     m_maxWidth = maxW;
1242     m_maxHeight = maxH;
1243
1244     wxFrame *frame = wxDynamicCast(this, wxFrame);
1245     if ( !frame )
1246     {
1247         // TODO what about dialogs?
1248         return;
1249     }
1250
1251     Widget widget = (Widget) frame->GetShellWidget();
1252
1253     if (minW > -1)
1254         XtVaSetValues(widget, XmNminWidth, minW, NULL);
1255     if (minH > -1)
1256         XtVaSetValues(widget, XmNminHeight, minH, NULL);
1257     if (maxW > -1)
1258         XtVaSetValues(widget, XmNmaxWidth, maxW, NULL);
1259     if (maxH > -1)
1260         XtVaSetValues(widget, XmNmaxHeight, maxH, NULL);
1261     if (incW > -1)
1262         XtVaSetValues(widget, XmNwidthInc, incW, NULL);
1263     if (incH > -1)
1264         XtVaSetValues(widget, XmNheightInc, incH, NULL);
1265 }
1266
1267 // ---------------------------------------------------------------------------
1268 // text metrics
1269 // ---------------------------------------------------------------------------
1270
1271 int wxWindow::GetCharHeight() const
1272 {
1273     wxCHECK_MSG( m_font.Ok(), 0, "valid window font needed" );
1274
1275     WXFontStructPtr pFontStruct = m_font.GetFontStruct(1.0, GetXDisplay());
1276
1277     int direction, ascent, descent;
1278     XCharStruct overall;
1279     XTextExtents ((XFontStruct*) pFontStruct, "x", 1, &direction, &ascent,
1280         &descent, &overall);
1281
1282     //  return (overall.ascent + overall.descent);
1283     return (ascent + descent);
1284 }
1285
1286 int wxWindow::GetCharWidth() const
1287 {
1288     wxCHECK_MSG( m_font.Ok(), 0, "valid window font needed" );
1289
1290     WXFontStructPtr pFontStruct = m_font.GetFontStruct(1.0, GetXDisplay());
1291
1292     int direction, ascent, descent;
1293     XCharStruct overall;
1294     XTextExtents ((XFontStruct*) pFontStruct, "x", 1, &direction, &ascent,
1295         &descent, &overall);
1296
1297     return overall.width;
1298 }
1299
1300 void wxWindow::GetTextExtent(const wxString& string,
1301                              int *x, int *y,
1302                              int *descent, int *externalLeading,
1303                              const wxFont *theFont) const
1304 {
1305     wxFont *fontToUse = (wxFont *)theFont;
1306     if (!fontToUse)
1307         fontToUse = (wxFont *) & m_font;
1308
1309     wxCHECK_RET( fontToUse->Ok(), "valid window font needed" );
1310
1311     WXFontStructPtr pFontStruct = theFont->GetFontStruct(1.0, GetXDisplay());
1312
1313     int direction, ascent, descent2;
1314     XCharStruct overall;
1315     int slen;
1316
1317 #if 0
1318     if (use16)
1319         XTextExtents16((XFontStruct*) pFontStruct, (XChar2b *) (char*) (const char*) string, slen, &direction,
1320         &ascent, &descent2, &overall);
1321 #endif
1322
1323     XTextExtents((XFontStruct*) pFontStruct, string, slen,
1324                  &direction, &ascent, &descent2, &overall);
1325
1326     if ( x )
1327         *x = (overall.width);
1328     if ( y )
1329         *y = (ascent + descent2);
1330     if (descent)
1331         *descent = descent2;
1332     if (externalLeading)
1333         *externalLeading = 0;
1334 }
1335
1336 // ----------------------------------------------------------------------------
1337 // painting
1338 // ----------------------------------------------------------------------------
1339
1340 void wxWindow::Refresh(bool eraseBack, const wxRect *rect)
1341 {
1342     m_needsRefresh = TRUE;
1343     Display *display = XtDisplay((Widget) GetMainWidget());
1344     Window thisWindow = XtWindow((Widget) GetMainWidget());
1345
1346     XExposeEvent dummyEvent;
1347     int width, height;
1348     GetSize(&width, &height);
1349
1350     dummyEvent.type = Expose;
1351     dummyEvent.display = display;
1352     dummyEvent.send_event = True;
1353     dummyEvent.window = thisWindow;
1354     if (rect)
1355     {
1356         dummyEvent.x = rect->x;
1357         dummyEvent.y = rect->y;
1358         dummyEvent.width = rect->width;
1359         dummyEvent.height = rect->height;
1360     }
1361     else
1362     {
1363         dummyEvent.x = 0;
1364         dummyEvent.y = 0;
1365         dummyEvent.width = width;
1366         dummyEvent.height = height;
1367     }
1368     dummyEvent.count = 0;
1369
1370     if (eraseBack)
1371     {
1372         wxClientDC dc(this);
1373         wxBrush backgroundBrush(GetBackgroundColour(), wxSOLID);
1374         dc.SetBackground(backgroundBrush);
1375         if (rect)
1376             dc.Clear(*rect);
1377         else
1378             dc.Clear();
1379     }
1380
1381     XSendEvent(display, thisWindow, False, ExposureMask, (XEvent *)&dummyEvent);
1382 }
1383
1384 void wxWindow::Clear()
1385 {
1386     wxClientDC dc(this);
1387     wxBrush brush(GetBackgroundColour(), wxSOLID);
1388     dc.SetBackground(brush);
1389     dc.Clear();
1390 }
1391
1392 void wxWindow::ClearUpdateRects()
1393 {
1394     wxRectList::Node* node = m_updateRects.GetFirst();
1395     while (node)
1396     {
1397         wxRect* rect = node->GetData();
1398         delete rect;
1399         node = node->GetNext();
1400     }
1401
1402     m_updateRects.Clear();
1403 }
1404
1405 void wxWindow::DoPaint()
1406 {
1407     //TODO : make a temporary gc so we can do the XCopyArea below
1408     if (m_backingPixmap && !m_needsRefresh)
1409     {
1410       wxPaintDC dc(this);
1411
1412       GC tempGC = (GC) dc.GetBackingGC();
1413
1414       Widget widget = (Widget) GetMainWidget();
1415
1416       int scrollPosX = 0;
1417       int scrollPosY = 0;
1418
1419       // We have to test whether it's a wxScrolledWindow (hack!) because
1420       // otherwise we don't know how many pixels have been scrolled. We might
1421       // solve this in the future by defining virtual wxWindow functions to get
1422       // the scroll position in pixels. Or, each kind of scrolled window has to
1423       // implement backing stores itself, using generic wxWindows code.
1424       wxScrolledWindow* scrolledWindow = wxDynamicCast(this, wxScrolledWindow);
1425       if ( scrolledWindow )
1426       {
1427           int x, y;
1428           scrolledWindow->CalcScrolledPosition(0, 0, &x, &y);
1429
1430           scrollPosX = - x;
1431           scrollPosY = - y;
1432       }
1433
1434       // TODO: This could be optimized further by only copying the areas in the
1435       //       current update region.
1436
1437       // Only blit the part visible in the client area. The backing pixmap
1438       // always starts at 0, 0 but we may be looking at only a portion of it.
1439       wxSize clientArea = GetClientSize();
1440       int toBlitX = m_pixmapWidth - scrollPosX;
1441       int toBlitY = m_pixmapHeight - scrollPosY;
1442
1443       // Copy whichever is samller, the amount of pixmap we have to copy,
1444       // or the size of the client area.
1445       toBlitX = wxMin(toBlitX, clientArea.x);
1446       toBlitY = wxMin(toBlitY, clientArea.y);
1447
1448       // Make sure we're not negative
1449       toBlitX = wxMax(0, toBlitX);
1450       toBlitY = wxMax(0, toBlitY);
1451
1452       XCopyArea
1453       (
1454        XtDisplay(widget),
1455        (Pixmap) m_backingPixmap,
1456        XtWindow (widget),
1457        tempGC,
1458        scrollPosX, scrollPosY, // Start at the scroll position
1459        toBlitX, toBlitY,       // How much of the pixmap to copy
1460        0, 0                    // Destination
1461       );
1462     }
1463     else
1464     {
1465         // Set an erase event first
1466         wxEraseEvent eraseEvent(GetId());
1467         eraseEvent.SetEventObject(this);
1468         GetEventHandler()->ProcessEvent(eraseEvent);
1469
1470         wxPaintEvent event(GetId());
1471         event.SetEventObject(this);
1472         GetEventHandler()->ProcessEvent(event);
1473
1474         m_needsRefresh = FALSE;
1475     }
1476 }
1477
1478 // ----------------------------------------------------------------------------
1479 // event handlers
1480 // ----------------------------------------------------------------------------
1481
1482 // Responds to colour changes: passes event on to children.
1483 void wxWindow::OnSysColourChanged(wxSysColourChangedEvent& event)
1484 {
1485     wxWindowList::Node *node = GetChildren().GetFirst();
1486     while ( node )
1487     {
1488         // Only propagate to non-top-level windows
1489         wxWindow *win = node->GetData();
1490         if ( win->GetParent() )
1491         {
1492             wxSysColourChangedEvent event2;
1493             event.m_eventObject = win;
1494             win->GetEventHandler()->ProcessEvent(event2);
1495         }
1496
1497         node = node->GetNext();
1498     }
1499 }
1500
1501 void wxWindow::OnIdle(wxIdleEvent& event)
1502 {
1503     // This calls the UI-update mechanism (querying windows for
1504     // menu/toolbar/control state information)
1505     UpdateWindowUI();
1506 }
1507
1508 // ----------------------------------------------------------------------------
1509 // accelerators
1510 // ----------------------------------------------------------------------------
1511
1512 bool wxWindow::ProcessAccelerator(wxKeyEvent& event)
1513 {
1514     if (!m_acceleratorTable.Ok())
1515         return FALSE;
1516
1517     int count = m_acceleratorTable.GetCount();
1518     wxAcceleratorEntry* entries = m_acceleratorTable.GetEntries();
1519     int i;
1520     for (i = 0; i < count; i++)
1521     {
1522         wxAcceleratorEntry* entry = & (entries[i]);
1523         if (entry->MatchesEvent(event))
1524         {
1525             // Bingo, we have a match. Now find a control that matches the entry
1526             // command id.
1527
1528             // Need to go up to the top of the window hierarchy, since it might
1529             // be e.g. a menu item
1530             wxWindow* parent = this;
1531             while ( parent && !parent->IsTopLevel() )
1532                 parent = parent->GetParent();
1533
1534             if (!parent)
1535                 return FALSE;
1536
1537             wxFrame* frame = wxDynamicCast(parent, wxFrame);
1538             if ( frame )
1539             {
1540                 // Try for a menu command
1541                 if (frame->GetMenuBar())
1542                 {
1543                     wxMenuItem* item = frame->GetMenuBar()->FindItemForId(entry->GetCommand());
1544                     if (item)
1545                     {
1546                         wxCommandEvent commandEvent(wxEVT_COMMAND_MENU_SELECTED, entry->GetCommand());
1547                         commandEvent.SetEventObject(frame);
1548
1549                         // If ProcessEvent returns TRUE (it was handled), then
1550                         // the calling code will skip the event handling.
1551                         return frame->GetEventHandler()->ProcessEvent(commandEvent);
1552                     }
1553                 }
1554             }
1555
1556             // Find a child matching the command id
1557             wxWindow* child = parent->FindWindow(entry->GetCommand());
1558
1559             // No such child
1560             if (!child)
1561                 return FALSE;
1562
1563             // Now we process those kinds of windows that we can.
1564             // For now, only buttons.
1565             if ( wxDynamicCast(child, wxButton) )
1566             {
1567                 wxCommandEvent commandEvent (wxEVT_COMMAND_BUTTON_CLICKED, child->GetId());
1568                 commandEvent.SetEventObject(child);
1569                 return child->GetEventHandler()->ProcessEvent(commandEvent);
1570             }
1571
1572             return FALSE;
1573         } // matches event
1574     }// for
1575
1576     // We didn't match the key event against an accelerator.
1577     return FALSE;
1578 }
1579
1580 // ============================================================================
1581 // Motif-specific stuff from here on
1582 // ============================================================================
1583
1584 // ----------------------------------------------------------------------------
1585 // function which maintain the global hash table mapping Widgets to wxWindows
1586 // ----------------------------------------------------------------------------
1587
1588 bool wxAddWindowToTable(Widget w, wxWindow *win)
1589 {
1590     wxWindow *oldItem = NULL;
1591     if ((oldItem = (wxWindow *)wxWidgetHashTable->Get ((long) w)))
1592     {
1593         wxLogDebug("Widget table clash: new widget is %ld, %s",
1594                    (long)w, win->GetClassInfo()->GetClassName());
1595         return FALSE;
1596     }
1597
1598     wxWidgetHashTable->Put((long) w, win);
1599
1600     return TRUE;
1601 }
1602
1603 wxWindow *wxGetWindowFromTable(Widget w)
1604 {
1605     return (wxWindow *)wxWidgetHashTable->Get((long) w);
1606 }
1607
1608 void wxDeleteWindowFromTable(Widget w)
1609 {
1610     wxWidgetHashTable->Delete((long)w);
1611 }
1612
1613 // ----------------------------------------------------------------------------
1614 // add/remove window from the table
1615 // ----------------------------------------------------------------------------
1616
1617 // Add to hash table, add event handler
1618 bool wxWindow::AttachWidget (wxWindow* parent, WXWidget mainWidget,
1619                              WXWidget formWidget, int x, int y, int width, int height)
1620 {
1621     wxAddWindowToTable((Widget) mainWidget, this);
1622     if (CanAddEventHandler())
1623     {
1624         XtAddEventHandler((Widget) mainWidget,
1625             ButtonPressMask | ButtonReleaseMask | PointerMotionMask, // | KeyPressMask,
1626             False,
1627             wxPanelItemEventHandler,
1628             (XtPointer) this);
1629     }
1630
1631     if (!formWidget)
1632     {
1633         XtTranslations ptr;
1634         XtOverrideTranslations ((Widget) mainWidget,
1635             ptr = XtParseTranslationTable ("<Configure>: resize()"));
1636         XtFree ((char *) ptr);
1637     }
1638
1639     // Some widgets have a parent form widget, e.g. wxRadioBox
1640     if (formWidget)
1641     {
1642         if (!wxAddWindowToTable((Widget) formWidget, this))
1643             return FALSE;
1644
1645         XtTranslations ptr;
1646         XtOverrideTranslations ((Widget) formWidget,
1647             ptr = XtParseTranslationTable ("<Configure>: resize()"));
1648         XtFree ((char *) ptr);
1649     }
1650
1651     if (x == -1)
1652         x = 0;
1653     if (y == -1)
1654         y = 0;
1655     SetSize (x, y, width, height);
1656
1657     return TRUE;
1658 }
1659
1660 // Remove event handler, remove from hash table
1661 bool wxWindow::DetachWidget(WXWidget widget)
1662 {
1663     if (CanAddEventHandler())
1664     {
1665         XtRemoveEventHandler((Widget) widget,
1666             ButtonPressMask | ButtonReleaseMask | PointerMotionMask, // | KeyPressMask,
1667             False,
1668             wxPanelItemEventHandler,
1669             (XtPointer)this);
1670     }
1671
1672     wxDeleteWindowFromTable((Widget) widget);
1673     return TRUE;
1674 }
1675
1676 // ----------------------------------------------------------------------------
1677 // Motif-specific accessors
1678 // ----------------------------------------------------------------------------
1679
1680 // Get the underlying X window
1681 WXWindow wxWindow::GetXWindow() const
1682 {
1683     Widget wMain = (Widget)GetMainWidget();
1684     if ( wMain )
1685         return (WXWindow) XtWindow(wMain);
1686     else
1687         return (WXWindow) 0;
1688 }
1689
1690 // Get the underlying X display
1691 WXDisplay *wxWindow::GetXDisplay() const
1692 {
1693     Widget wMain = (Widget)GetMainWidget();
1694     if ( wMain )
1695         return (WXDisplay*) XtDisplay(wMain);
1696     else
1697         return (WXDisplay*) NULL;
1698 }
1699
1700 WXWidget wxWindow::GetMainWidget() const
1701 {
1702     if (m_drawingArea)
1703         return m_drawingArea;
1704     else
1705         return m_mainWidget;
1706 }
1707
1708 WXWidget wxWindow::GetClientWidget() const
1709 {
1710     if (m_drawingArea != (WXWidget) 0)
1711         return m_drawingArea;
1712     else
1713         return GetMainWidget();
1714 }
1715
1716 WXWidget wxWindow::GetTopWidget() const
1717 {
1718     return GetMainWidget();
1719 }
1720
1721 WXWidget wxWindow::GetLabelWidget() const
1722 {
1723     return GetMainWidget();
1724 }
1725
1726 // ----------------------------------------------------------------------------
1727 // Motif callbacks
1728 // ----------------------------------------------------------------------------
1729
1730 // All widgets should have this as their resize proc.
1731 // OnSize sent to wxWindow via client data.
1732 void wxWidgetResizeProc(Widget w, XConfigureEvent *event, String args[], int *num_args)
1733 {
1734     wxWindow *win = wxGetWindowFromTable(w);
1735     if (!win)
1736         return;
1737
1738     if (win->PreResize())
1739     {
1740         int width, height;
1741         win->GetSize(&width, &height);
1742         wxSizeEvent sizeEvent(wxSize(width, height), win->GetId());
1743         sizeEvent.SetEventObject(win);
1744         win->GetEventHandler()->ProcessEvent(sizeEvent);
1745     }
1746 }
1747
1748 static void wxCanvasRepaintProc(Widget drawingArea,
1749                                 XtPointer clientData,
1750                                 XmDrawingAreaCallbackStruct * cbs)
1751 {
1752     if (!wxGetWindowFromTable(drawingArea))
1753         return;
1754
1755     XEvent * event = cbs->event;
1756     wxWindow * win = (wxWindow *) clientData;
1757
1758     switch (event->type)
1759     {
1760     case Expose:
1761         {
1762             if (event -> xexpose.count == 0)
1763             {
1764 #if 0
1765                 wxPaintEvent event(win->GetId());
1766                 event.SetEventObject(win);
1767                 win->GetEventHandler()->ProcessEvent(event);
1768 #endif // 0
1769
1770                 win->DoPaint();
1771                 win->ClearUpdateRects();
1772             }
1773             else
1774             {
1775                 win->AddUpdateRect(event->xexpose.x, event->xexpose.y,
1776                                    event->xexpose.width, event->xexpose.height);
1777             }
1778             break;
1779         }
1780     }
1781 }
1782
1783 // Unable to deal with Enter/Leave without a separate EventHandler (Motif 1.1.4)
1784 static void wxCanvasEnterLeave(Widget drawingArea,
1785                                XtPointer clientData,
1786                                XCrossingEvent * event)
1787 {
1788     XmDrawingAreaCallbackStruct cbs;
1789     XEvent ev;
1790
1791     ((XCrossingEvent &) ev) = *event;
1792
1793     cbs.reason = XmCR_INPUT;
1794     cbs.event = &ev;
1795
1796     wxCanvasInputEvent(drawingArea, (XtPointer) NULL, &cbs);
1797 }
1798
1799 // Fix to make it work under Motif 1.0 (!)
1800 static void wxCanvasMotionEvent (Widget drawingArea, XButtonEvent * event)
1801 {
1802 #if XmVersion <= 1000
1803     XmDrawingAreaCallbackStruct cbs;
1804     XEvent ev;
1805
1806     ev = *((XEvent *) event);
1807     cbs.reason = XmCR_INPUT;
1808     cbs.event = &ev;
1809
1810     wxCanvasInputEvent (drawingArea, (XtPointer) NULL, &cbs);
1811 #endif // XmVersion <= 1000
1812 }
1813
1814 static void wxCanvasInputEvent(Widget drawingArea,
1815                                XtPointer data,
1816                                XmDrawingAreaCallbackStruct * cbs)
1817 {
1818     wxWindow *canvas = wxGetWindowFromTable(drawingArea);
1819     XEvent local_event;
1820
1821     if (canvas==NULL)
1822         return;
1823
1824     if (cbs->reason != XmCR_INPUT)
1825         return;
1826
1827     local_event = *(cbs->event);    // We must keep a copy!
1828
1829     switch (local_event.xany.type)
1830     {
1831     case EnterNotify:
1832     case LeaveNotify:
1833     case ButtonPress:
1834     case ButtonRelease:
1835     case MotionNotify:
1836         {
1837             wxEventType eventType = wxEVT_NULL;
1838
1839             if (local_event.xany.type == EnterNotify)
1840             {
1841                 //if (local_event.xcrossing.mode!=NotifyNormal)
1842                 //  return ; // Ignore grab events
1843                 eventType = wxEVT_ENTER_WINDOW;
1844                 //            canvas->GetEventHandler()->OnSetFocus();
1845             }
1846             else if (local_event.xany.type == LeaveNotify)
1847             {
1848                 //if (local_event.xcrossing.mode!=NotifyNormal)
1849                 //  return ; // Ignore grab events
1850                 eventType = wxEVT_LEAVE_WINDOW;
1851                 //            canvas->GetEventHandler()->OnKillFocus();
1852             }
1853             else if (local_event.xany.type == MotionNotify)
1854             {
1855                 eventType = wxEVT_MOTION;
1856                 if (local_event.xmotion.is_hint == NotifyHint)
1857                 {
1858                     Window root, child;
1859                     Display *dpy = XtDisplay (drawingArea);
1860
1861                     XQueryPointer (dpy, XtWindow (drawingArea),
1862                         &root, &child,
1863                         &local_event.xmotion.x_root,
1864                         &local_event.xmotion.y_root,
1865                         &local_event.xmotion.x,
1866                         &local_event.xmotion.y,
1867                         &local_event.xmotion.state);
1868                 }
1869                 else
1870                 {
1871                 }
1872             }
1873
1874             else if (local_event.xany.type == ButtonPress)
1875             {
1876                 if (local_event.xbutton.button == Button1)
1877                 {
1878                     eventType = wxEVT_LEFT_DOWN;
1879                     canvas->SetButton1(TRUE);
1880                 }
1881                 else if (local_event.xbutton.button == Button2)
1882                 {
1883                     eventType = wxEVT_MIDDLE_DOWN;
1884                     canvas->SetButton2(TRUE);
1885                 }
1886                 else if (local_event.xbutton.button == Button3)
1887                 {
1888                     eventType = wxEVT_RIGHT_DOWN;
1889                     canvas->SetButton3(TRUE);
1890                 }
1891             }
1892             else if (local_event.xany.type == ButtonRelease)
1893             {
1894                 if (local_event.xbutton.button == Button1)
1895                 {
1896                     eventType = wxEVT_LEFT_UP;
1897                     canvas->SetButton1(FALSE);
1898                 }
1899                 else if (local_event.xbutton.button == Button2)
1900                 {
1901                     eventType = wxEVT_MIDDLE_UP;
1902                     canvas->SetButton2(FALSE);
1903                 }
1904                 else if (local_event.xbutton.button == Button3)
1905                 {
1906                     eventType = wxEVT_RIGHT_UP;
1907                     canvas->SetButton3(FALSE);
1908                 }
1909             }
1910
1911             wxMouseEvent wxevent (eventType);
1912
1913             wxevent.m_leftDown = ((eventType == wxEVT_LEFT_DOWN)
1914                 || (event_left_is_down (&local_event)
1915                 && (eventType != wxEVT_LEFT_UP)));
1916             wxevent.m_middleDown = ((eventType == wxEVT_MIDDLE_DOWN)
1917                 || (event_middle_is_down (&local_event)
1918                 && (eventType != wxEVT_MIDDLE_UP)));
1919             wxevent.m_rightDown = ((eventType == wxEVT_RIGHT_DOWN)
1920                 || (event_right_is_down (&local_event)
1921                 && (eventType != wxEVT_RIGHT_UP)));
1922
1923             wxevent.m_shiftDown = local_event.xbutton.state & ShiftMask;
1924             wxevent.m_controlDown = local_event.xbutton.state & ControlMask;
1925             wxevent.m_altDown = local_event.xbutton.state & Mod3Mask;
1926             wxevent.m_metaDown = local_event.xbutton.state & Mod1Mask;
1927             wxevent.SetTimestamp(local_event.xbutton.time);
1928
1929             // Now check if we need to translate this event into a double click
1930             if (TRUE) // canvas->doubleClickAllowed)
1931             {
1932                 if (wxevent.ButtonDown())
1933                 {
1934                     long dclickTime = XtGetMultiClickTime((Display*) wxGetDisplay());
1935
1936                     // get button and time-stamp
1937                     int button = 0;
1938                     if (wxevent.LeftDown())
1939                         button = 1;
1940                     else if (wxevent.MiddleDown())
1941                         button = 2;
1942                     else if (wxevent.RightDown())
1943                         button = 3;
1944                     long ts = wxevent.GetTimestamp();
1945
1946                     // check, if single or double click
1947                     int buttonLast = canvas->GetLastClickedButton();
1948                     long lastTS = canvas->GetLastClickTime();
1949                     if ( buttonLast && buttonLast == button && (ts - lastTS) < dclickTime )
1950                     {
1951                         // I have a dclick
1952                         canvas->SetLastClick(0, ts);
1953                         switch ( eventType )
1954                         {
1955                         case wxEVT_LEFT_DOWN:
1956                             wxevent.SetEventType(wxEVT_LEFT_DCLICK);
1957                             break;
1958                         case wxEVT_MIDDLE_DOWN:
1959                             wxevent.SetEventType(wxEVT_MIDDLE_DCLICK);
1960                             break;
1961                         case wxEVT_RIGHT_DOWN:
1962                             wxevent.SetEventType(wxEVT_RIGHT_DCLICK);
1963                             break;
1964
1965                         default :
1966                             break;
1967                         }
1968
1969                     }
1970                     else
1971                     {
1972                         // not fast enough or different button
1973                         canvas->SetLastClick(button, ts);
1974                     }
1975                 }
1976             }
1977
1978             wxevent.SetId(canvas->GetId());
1979             wxevent.SetEventObject(canvas);
1980             wxevent.m_x = local_event.xbutton.x;
1981             wxevent.m_y = local_event.xbutton.y;
1982             canvas->GetEventHandler()->ProcessEvent (wxevent);
1983 #if 0
1984             if (eventType == wxEVT_ENTER_WINDOW ||
1985                     eventType == wxEVT_LEAVE_WINDOW ||
1986                     eventType == wxEVT_MOTION
1987                )
1988                 return;
1989 #endif // 0
1990             break;
1991       }
1992     case KeyPress:
1993         {
1994             KeySym keySym;
1995 #if 0
1996             XComposeStatus compose;
1997             (void) XLookupString ((XKeyEvent *) & local_event, wxBuffer, 20, &keySym, &compose);
1998 #endif // 0
1999
2000             (void) XLookupString ((XKeyEvent *) & local_event, wxBuffer, 20, &keySym, NULL);
2001             int id = wxCharCodeXToWX (keySym);
2002
2003             wxEventType eventType = wxEVT_CHAR;
2004
2005             wxKeyEvent event (eventType);
2006
2007             if (local_event.xkey.state & ShiftMask)
2008                 event.m_shiftDown = TRUE;
2009             if (local_event.xkey.state & ControlMask)
2010                 event.m_controlDown = TRUE;
2011             if (local_event.xkey.state & Mod3Mask)
2012                 event.m_altDown = TRUE;
2013             if (local_event.xkey.state & Mod1Mask)
2014                 event.m_metaDown = TRUE;
2015             event.SetEventObject(canvas);
2016             event.m_keyCode = id;
2017             event.SetTimestamp(local_event.xkey.time);
2018
2019             if (id > -1)
2020             {
2021                 // Implement wxFrame::OnCharHook by checking ancestor.
2022                 wxWindow *parent = canvas->GetParent();
2023                 while (parent && !parent->IsKindOf(CLASSINFO(wxFrame)))
2024                     parent = parent->GetParent();
2025
2026                 if (parent)
2027                 {
2028                     event.SetEventType(wxEVT_CHAR_HOOK);
2029                     if (parent->GetEventHandler()->ProcessEvent(event))
2030                         return;
2031                 }
2032
2033                 // For simplicity, OnKeyDown is the same as OnChar
2034                 // TODO: filter modifier key presses from OnChar
2035                 event.SetEventType(wxEVT_KEY_DOWN);
2036
2037                 // Only process OnChar if OnKeyDown didn't swallow it
2038                 if (!canvas->GetEventHandler()->ProcessEvent (event))
2039                 {
2040                   event.SetEventType(wxEVT_CHAR);
2041                   canvas->GetEventHandler()->ProcessEvent (event);
2042         }
2043             }
2044             break;
2045         }
2046     case KeyRelease:
2047         {
2048             KeySym keySym;
2049             (void) XLookupString ((XKeyEvent *) & local_event, wxBuffer, 20, &keySym, NULL);
2050             int id = wxCharCodeXToWX (keySym);
2051
2052             wxKeyEvent event (wxEVT_KEY_UP);
2053
2054             if (local_event.xkey.state & ShiftMask)
2055                 event.m_shiftDown = TRUE;
2056             if (local_event.xkey.state & ControlMask)
2057                 event.m_controlDown = TRUE;
2058             if (local_event.xkey.state & Mod3Mask)
2059                 event.m_altDown = TRUE;
2060             if (local_event.xkey.state & Mod1Mask)
2061                 event.m_metaDown = TRUE;
2062             event.SetEventObject(canvas);
2063             event.m_keyCode = id;
2064             event.SetTimestamp(local_event.xkey.time);
2065
2066             if (id > -1)
2067             {
2068                 canvas->GetEventHandler()->ProcessEvent (event);
2069             }
2070             break;
2071         }
2072     case FocusIn:
2073         {
2074             if (local_event.xfocus.detail != NotifyPointer)
2075             {
2076                 wxFocusEvent event(wxEVT_SET_FOCUS, canvas->GetId());
2077                 event.SetEventObject(canvas);
2078                 canvas->GetEventHandler()->ProcessEvent(event);
2079             }
2080             break;
2081         }
2082     case FocusOut:
2083         {
2084             if (local_event.xfocus.detail != NotifyPointer)
2085             {
2086                 wxFocusEvent event(wxEVT_KILL_FOCUS, canvas->GetId());
2087                 event.SetEventObject(canvas);
2088                 canvas->GetEventHandler()->ProcessEvent(event);
2089             }
2090             break;
2091         }
2092     default:
2093         break;
2094     }
2095 }
2096
2097 static void wxPanelItemEventHandler(Widget    wid,
2098                                     XtPointer client_data,
2099                                     XEvent*   event,
2100                                     Boolean  *continueToDispatch)
2101 {
2102     // Widget can be a label or the actual widget.
2103
2104     wxWindow *window = wxGetWindowFromTable(wid);
2105     if (window)
2106     {
2107         wxMouseEvent wxevent(0);
2108         if (wxTranslateMouseEvent(wxevent, window, wid, event))
2109         {
2110             window->GetEventHandler()->ProcessEvent(wxevent);
2111         }
2112     }
2113
2114     // TODO: probably the key to allowing default behaviour to happen. Say we
2115     // set a m_doDefault flag to FALSE at the start of this function. Then in
2116     // e.g. wxWindow::OnMouseEvent we can call Default() which sets this flag to
2117     // TRUE, indicating that default processing can happen. Thus, behaviour can
2118     // appear to be overridden just by adding an event handler and not calling
2119     // wxWindow::OnWhatever. ALSO, maybe we can use this instead of the current
2120     // way of handling drawing area events, to simplify things.
2121     *continueToDispatch = True;
2122 }
2123
2124 static void wxScrollBarCallback(Widget scrollbar,
2125                                 XtPointer clientData,
2126                                 XmScaleCallbackStruct *cbs)
2127 {
2128     wxWindow *win = wxGetWindowFromTable(scrollbar);
2129     int orientation = (int) clientData;
2130
2131     wxEventType eventType = wxEVT_NULL;
2132     switch (cbs->reason)
2133     {
2134     case XmCR_INCREMENT:
2135         {
2136             eventType = wxEVT_SCROLL_LINEDOWN;
2137             break;
2138         }
2139     case XmCR_DECREMENT:
2140         {
2141             eventType = wxEVT_SCROLL_LINEUP;
2142             break;
2143         }
2144     case XmCR_DRAG:
2145         {
2146             eventType = wxEVT_SCROLL_THUMBTRACK;
2147             break;
2148         }
2149     case XmCR_VALUE_CHANGED:
2150         {
2151             // TODO: Should this be intercepted too, or will it cause
2152             // duplicate events?
2153             eventType = wxEVT_SCROLL_THUMBTRACK;
2154             break;
2155         }
2156     case XmCR_PAGE_INCREMENT:
2157         {
2158             eventType = wxEVT_SCROLL_PAGEDOWN;
2159             break;
2160         }
2161     case XmCR_PAGE_DECREMENT:
2162         {
2163             eventType = wxEVT_SCROLL_PAGEUP;
2164             break;
2165         }
2166     case XmCR_TO_TOP:
2167         {
2168             eventType = wxEVT_SCROLL_TOP;
2169             break;
2170         }
2171     case XmCR_TO_BOTTOM:
2172         {
2173             eventType = wxEVT_SCROLL_BOTTOM;
2174             break;
2175         }
2176     default:
2177         {
2178             // Should never get here
2179             wxFAIL_MSG("Unknown scroll event.");
2180             break;
2181         }
2182     }
2183
2184     wxScrollEvent event(eventType, win->GetId());
2185     event.SetEventObject(win);
2186     event.SetPosition(cbs->value);
2187     event.SetOrientation( (orientation == XmHORIZONTAL) ? wxHORIZONTAL : wxVERTICAL );
2188
2189     win->GetEventHandler()->ProcessEvent(event);
2190 }
2191
2192 // For repainting arbitrary windows
2193 void wxUniversalRepaintProc(Widget w, XtPointer WXUNUSED(c_data), XEvent *event, char *)
2194 {
2195     Window window;
2196     Display *display;
2197
2198     wxWindow* win = wxGetWindowFromTable(w);
2199     if (!win)
2200         return;
2201
2202     switch(event -> type)
2203     {
2204     case Expose:
2205         {
2206             window = (Window) win -> GetXWindow();
2207             display = (Display *) win -> GetXDisplay();
2208
2209             if (event -> xexpose.count == 0)
2210             {
2211                 win->DoPaint();
2212
2213                 win->ClearUpdateRects();
2214             }
2215             else
2216             {
2217                 win->AddUpdateRect(event->xexpose.x, event->xexpose.y,
2218                                    event->xexpose.width, event->xexpose.height);
2219             }
2220
2221             break;
2222         }
2223     }
2224 }
2225
2226 // ----------------------------------------------------------------------------
2227 // CanvaseXXXSize() functions
2228 // ----------------------------------------------------------------------------
2229
2230 // SetSize, but as per old wxCanvas (with drawing widget etc.)
2231 void wxWindow::CanvasSetSize (int x, int y, int w, int h, int sizeFlags)
2232 {
2233     // A bit of optimization to help sort out the flickers.
2234     int oldX, oldY, oldW, oldH;
2235     GetSize(& oldW, & oldH);
2236     GetPosition(& oldX, & oldY);
2237
2238     bool useOldPos = FALSE;
2239     bool useOldSize = FALSE;
2240
2241     if ((x == -1) && (x == -1) && ((sizeFlags & wxSIZE_ALLOW_MINUS_ONE) == 0))
2242         useOldPos = TRUE;
2243     else if (x == oldX && y == oldY)
2244         useOldPos = TRUE;
2245
2246     if ((w == -1) && (h == -1))
2247         useOldSize = TRUE;
2248     else if (w == oldW && h == oldH)
2249         useOldSize = TRUE;
2250
2251     if (!wxNoOptimize::CanOptimize())
2252     {
2253         useOldSize = FALSE; useOldPos = FALSE;
2254     }
2255
2256     if (useOldPos && useOldSize)
2257         return;
2258
2259     Widget drawingArea = (Widget) m_drawingArea;
2260     bool managed = XtIsManaged(m_borderWidget ? (Widget) m_borderWidget : (Widget) m_scrolledWindow);
2261
2262     if (managed)
2263         XtUnmanageChild (m_borderWidget ? (Widget) m_borderWidget : (Widget) m_scrolledWindow);
2264     XtVaSetValues(drawingArea, XmNresizePolicy, XmRESIZE_ANY, NULL);
2265
2266     int xx = x; int yy = y;
2267     AdjustForParentClientOrigin(xx, yy, sizeFlags);
2268
2269     if (!useOldPos)
2270     {
2271         if (x > -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
2272         {
2273             XtVaSetValues (m_borderWidget ? (Widget) m_borderWidget : (Widget) m_scrolledWindow,
2274                 XmNx, xx, NULL);
2275         }
2276
2277         if (y > -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
2278         {
2279             XtVaSetValues (m_borderWidget ? (Widget) m_borderWidget : (Widget) m_scrolledWindow,
2280                 XmNy, yy, NULL);
2281         }
2282     }
2283
2284     if (!useOldSize)
2285     {
2286
2287         if (w > -1)
2288         {
2289             if (m_borderWidget)
2290             {
2291                 XtVaSetValues ((Widget) m_borderWidget, XmNwidth, w, NULL);
2292                 short thick, margin;
2293                 XtVaGetValues ((Widget) m_borderWidget,
2294                     XmNshadowThickness, &thick,
2295                     XmNmarginWidth, &margin,
2296                     NULL);
2297                 w -= 2 * (thick + margin);
2298             }
2299
2300             XtVaSetValues ((Widget) m_scrolledWindow, XmNwidth, w, NULL);
2301
2302             Dimension spacing;
2303             Widget sbar;
2304             XtVaGetValues ((Widget) m_scrolledWindow,
2305                 XmNspacing, &spacing,
2306                 XmNverticalScrollBar, &sbar,
2307                 NULL);
2308             Dimension wsbar;
2309             if (sbar)
2310                 XtVaGetValues (sbar, XmNwidth, &wsbar, NULL);
2311             else
2312                 wsbar = 0;
2313
2314             w -= (spacing + wsbar);
2315
2316 #if 0
2317             XtVaSetValues(drawingArea, XmNwidth, w, NULL);
2318 #endif // 0
2319         }
2320         if (h > -1)
2321         {
2322             if (m_borderWidget)
2323             {
2324                 XtVaSetValues ((Widget) m_borderWidget, XmNheight, h, NULL);
2325                 short thick, margin;
2326                 XtVaGetValues ((Widget) m_borderWidget,
2327                     XmNshadowThickness, &thick,
2328                     XmNmarginHeight, &margin,
2329                     NULL);
2330                 h -= 2 * (thick + margin);
2331             }
2332
2333             XtVaSetValues ((Widget) m_scrolledWindow, XmNheight, h, NULL);
2334
2335             Dimension spacing;
2336             Widget sbar;
2337             XtVaGetValues ((Widget) m_scrolledWindow,
2338                 XmNspacing, &spacing,
2339                 XmNhorizontalScrollBar, &sbar,
2340                 NULL);
2341             Dimension wsbar;
2342             if (sbar)
2343                 XtVaGetValues (sbar, XmNheight, &wsbar, NULL);
2344             else
2345                 wsbar = 0;
2346
2347             h -= (spacing + wsbar);
2348
2349 #if 0
2350             XtVaSetValues(drawingArea, XmNheight, h, NULL);
2351 #endif // 0
2352         }
2353     }
2354
2355     if (managed)
2356         XtManageChild (m_borderWidget ? (Widget) m_borderWidget : (Widget) m_scrolledWindow);
2357     XtVaSetValues(drawingArea, XmNresizePolicy, XmRESIZE_NONE, NULL);
2358
2359 #if 0
2360     int ww, hh;
2361     GetClientSize (&ww, &hh);
2362     wxSizeEvent sizeEvent(wxSize(ww, hh), GetId());
2363     sizeEvent.SetEventObject(this);
2364
2365     GetEventHandler()->ProcessEvent(sizeEvent);
2366 #endif // 0
2367 }
2368
2369 void wxWindow::CanvasSetClientSize (int w, int h)
2370 {
2371     Widget drawingArea = (Widget) m_drawingArea;
2372
2373     XtVaSetValues(drawingArea, XmNresizePolicy, XmRESIZE_ANY, NULL);
2374
2375     if (w > -1)
2376         XtVaSetValues(drawingArea, XmNwidth, w, NULL);
2377     if (h > -1)
2378         XtVaSetValues(drawingArea, XmNheight, h, NULL);
2379
2380 #if 0
2381     // TODO: is this necessary?
2382     allowRepainting = FALSE;
2383
2384     XSync (XtDisplay (drawingArea), FALSE);
2385     XEvent event;
2386     while (XtAppPending (wxTheApp->appContext))
2387     {
2388         XFlush (XtDisplay (drawingArea));
2389         XtAppNextEvent (wxTheApp->appContext, &event);
2390         XtDispatchEvent (&event);
2391     }
2392 #endif // 0
2393
2394     XtVaSetValues(drawingArea, XmNresizePolicy, XmRESIZE_NONE, NULL);
2395
2396 #if 0
2397     allowRepainting = TRUE;
2398     DoRefresh ();
2399
2400     wxSizeEvent sizeEvent(wxSize(w, h), GetId());
2401     sizeEvent.SetEventObject(this);
2402
2403     GetEventHandler()->ProcessEvent(sizeEvent);
2404 #endif // 0
2405 }
2406
2407 void wxWindow::CanvasGetClientSize (int *w, int *h) const
2408 {
2409     // Must return the same thing that was set via SetClientSize
2410     Dimension xx, yy;
2411     XtVaGetValues ((Widget) m_drawingArea, XmNwidth, &xx, XmNheight, &yy, NULL);
2412     *w = xx;
2413     *h = yy;
2414 }
2415
2416 void wxWindow::CanvasGetSize (int *w, int *h) const
2417 {
2418     Dimension xx, yy;
2419     if ((Widget) m_borderWidget)
2420         XtVaGetValues ((Widget) m_borderWidget, XmNwidth, &xx, XmNheight, &yy, NULL);
2421     else if ((Widget) m_scrolledWindow)
2422         XtVaGetValues ((Widget) m_scrolledWindow, XmNwidth, &xx, XmNheight, &yy, NULL);
2423     else
2424         XtVaGetValues ((Widget) m_drawingArea, XmNwidth, &xx, XmNheight, &yy, NULL);
2425
2426     *w = xx;
2427     *h = yy;
2428 }
2429
2430 void wxWindow::CanvasGetPosition (int *x, int *y) const
2431 {
2432     Position xx, yy;
2433     XtVaGetValues (m_borderWidget ? (Widget) m_borderWidget : (Widget) m_scrolledWindow, XmNx, &xx, XmNy, &yy, NULL);
2434
2435     // We may be faking the client origin.
2436     // So a window that's really at (0, 30) may appear
2437     // (to wxWin apps) to be at (0, 0).
2438     if (GetParent())
2439     {
2440         wxPoint pt(GetParent()->GetClientAreaOrigin());
2441         xx -= pt.x;
2442         yy -= pt.y;
2443     }
2444
2445     *x = xx;
2446     *y = yy;
2447 }
2448
2449 // ----------------------------------------------------------------------------
2450 // TranslateXXXEvent() functions
2451 // ----------------------------------------------------------------------------
2452
2453 bool wxTranslateMouseEvent(wxMouseEvent& wxevent, wxWindow *win, Widget widget, XEvent *xevent)
2454 {
2455     switch (xevent->xany.type)
2456     {
2457     case EnterNotify:
2458     case LeaveNotify:
2459     case ButtonPress:
2460     case ButtonRelease:
2461     case MotionNotify:
2462         {
2463             wxEventType eventType = wxEVT_NULL;
2464
2465             if (xevent->xany.type == LeaveNotify)
2466             {
2467                 win->SetButton1(FALSE);
2468                 win->SetButton2(FALSE);
2469                 win->SetButton3(FALSE);
2470                 return FALSE;
2471             }
2472             else if (xevent->xany.type == MotionNotify)
2473             {
2474                 eventType = wxEVT_MOTION;
2475             }
2476             else if (xevent->xany.type == ButtonPress)
2477             {
2478                 if (xevent->xbutton.button == Button1)
2479                 {
2480                     eventType = wxEVT_LEFT_DOWN;
2481                     win->SetButton1(TRUE);
2482                 }
2483                 else if (xevent->xbutton.button == Button2)
2484                 {
2485                     eventType = wxEVT_MIDDLE_DOWN;
2486                     win->SetButton2(TRUE);
2487                 }
2488                 else if (xevent->xbutton.button == Button3)
2489                 {
2490                     eventType = wxEVT_RIGHT_DOWN;
2491                     win->SetButton3(TRUE);
2492                 }
2493             }
2494             else if (xevent->xany.type == ButtonRelease)
2495             {
2496                 if (xevent->xbutton.button == Button1)
2497                 {
2498                     eventType = wxEVT_LEFT_UP;
2499                     win->SetButton1(FALSE);
2500                 }
2501                 else if (xevent->xbutton.button == Button2)
2502                 {
2503                     eventType = wxEVT_MIDDLE_UP;
2504                     win->SetButton2(FALSE);
2505                 }
2506                 else if (xevent->xbutton.button == Button3)
2507                 {
2508                     eventType = wxEVT_RIGHT_UP;
2509                     win->SetButton3(FALSE);
2510                 }
2511                 else return FALSE;
2512             }
2513             else
2514             {
2515                 return FALSE;
2516             }
2517
2518             wxevent.SetEventType(eventType);
2519
2520             Position x1, y1;
2521             XtVaGetValues(widget, XmNx, &x1, XmNy, &y1, NULL);
2522
2523             int x2, y2;
2524             win->GetPosition(&x2, &y2);
2525
2526             // The button x/y must be translated to wxWindows
2527             // window space - the widget might be a label or button,
2528             // within a form.
2529             int dx = 0;
2530             int dy = 0;
2531             if (widget != (Widget)win->GetMainWidget())
2532             {
2533                 dx = x1;
2534                 dy = y1;
2535             }
2536
2537             wxevent.m_x = xevent->xbutton.x + dx;
2538             wxevent.m_y = xevent->xbutton.y + dy;
2539
2540             wxevent.m_leftDown = ((eventType == wxEVT_LEFT_DOWN)
2541                 || (event_left_is_down (xevent)
2542                 && (eventType != wxEVT_LEFT_UP)));
2543             wxevent.m_middleDown = ((eventType == wxEVT_MIDDLE_DOWN)
2544                 || (event_middle_is_down (xevent)
2545                 && (eventType != wxEVT_MIDDLE_UP)));
2546             wxevent.m_rightDown = ((eventType == wxEVT_RIGHT_DOWN)
2547                 || (event_right_is_down (xevent)
2548                 && (eventType != wxEVT_RIGHT_UP)));
2549
2550             wxevent.m_shiftDown = xevent->xbutton.state & ShiftMask;
2551             wxevent.m_controlDown = xevent->xbutton.state & ControlMask;
2552             return TRUE;
2553         }
2554     }
2555     return FALSE;
2556 }
2557
2558 bool wxTranslateKeyEvent(wxKeyEvent& wxevent, wxWindow *win, Widget widget, XEvent *xevent)
2559 {
2560     switch (xevent->xany.type)
2561     {
2562     case KeyPress:
2563         {
2564             char buf[20];
2565
2566             KeySym keySym;
2567 #if 0
2568             XComposeStatus compose;
2569             (void) XLookupString ((XKeyEvent *) xevent, buf, 20, &keySym, &compose);
2570 #endif // 0
2571             (void) XLookupString ((XKeyEvent *) xevent, buf, 20, &keySym, NULL);
2572             int id = wxCharCodeXToWX (keySym);
2573
2574             if (xevent->xkey.state & ShiftMask)
2575                 wxevent.m_shiftDown = TRUE;
2576             if (xevent->xkey.state & ControlMask)
2577                 wxevent.m_controlDown = TRUE;
2578             if (xevent->xkey.state & Mod3Mask)
2579                 wxevent.m_altDown = TRUE;
2580             if (xevent->xkey.state & Mod1Mask)
2581                 wxevent.m_metaDown = TRUE;
2582             wxevent.SetEventObject(win);
2583             wxevent.m_keyCode = id;
2584             wxevent.SetTimestamp(xevent->xkey.time);
2585
2586             wxevent.m_x = xevent->xbutton.x;
2587             wxevent.m_y = xevent->xbutton.y;
2588
2589             if (id > -1)
2590                 return TRUE;
2591             else
2592                 return FALSE;
2593             break;
2594         }
2595     default:
2596         break;
2597     }
2598     return FALSE;
2599 }
2600
2601 // ----------------------------------------------------------------------------
2602 // Colour stuff
2603 // ----------------------------------------------------------------------------
2604
2605 #define YAllocColor XAllocColor
2606 XColor g_itemColors[5];
2607 int wxComputeColours (Display *display, wxColour * back, wxColour * fore)
2608 {
2609     int result;
2610     static XmColorProc colorProc;
2611
2612     result = wxNO_COLORS;
2613
2614     if (back)
2615     {
2616         g_itemColors[0].red = (((long) back->Red ()) << 8);
2617         g_itemColors[0].green = (((long) back->Green ()) << 8);
2618         g_itemColors[0].blue = (((long) back->Blue ()) << 8);
2619         g_itemColors[0].flags = DoRed | DoGreen | DoBlue;
2620         if (colorProc == (XmColorProc) NULL)
2621         {
2622             // Get a ptr to the actual function
2623             colorProc = XmSetColorCalculation ((XmColorProc) NULL);
2624             // And set it back to motif.
2625             XmSetColorCalculation (colorProc);
2626         }
2627         (*colorProc) (&g_itemColors[wxBACK_INDEX],
2628             &g_itemColors[wxFORE_INDEX],
2629             &g_itemColors[wxSELE_INDEX],
2630             &g_itemColors[wxTOPS_INDEX],
2631             &g_itemColors[wxBOTS_INDEX]);
2632         result = wxBACK_COLORS;
2633     }
2634     if (fore)
2635     {
2636         g_itemColors[wxFORE_INDEX].red = (((long) fore->Red ()) << 8);
2637         g_itemColors[wxFORE_INDEX].green = (((long) fore->Green ()) << 8);
2638         g_itemColors[wxFORE_INDEX].blue = (((long) fore->Blue ()) << 8);
2639         g_itemColors[wxFORE_INDEX].flags = DoRed | DoGreen | DoBlue;
2640         if (result == wxNO_COLORS)
2641             result = wxFORE_COLORS;
2642     }
2643
2644     Display *dpy = display;
2645     Colormap cmap = (Colormap) wxTheApp->GetMainColormap((WXDisplay*) dpy);
2646
2647     if (back)
2648     {
2649         /* 5 Colours to allocate */
2650         for (int i = 0; i < 5; i++)
2651             if (!YAllocColor (dpy, cmap, &g_itemColors[i]))
2652                 result = wxNO_COLORS;
2653     }
2654     else if (fore)
2655     {
2656         /* Only 1 colour to allocate */
2657         if (!YAllocColor (dpy, cmap, &g_itemColors[wxFORE_INDEX]))
2658             result = wxNO_COLORS;
2659     }
2660
2661     return (result);
2662
2663 }
2664
2665 // Changes the foreground and background colours to be derived from the current
2666 // background colour. To change the foreground colour, you must call
2667 // SetForegroundColour explicitly.
2668 void wxWindow::ChangeBackgroundColour()
2669 {
2670     WXWidget mainWidget = GetMainWidget();
2671     if ( mainWidget )
2672         DoChangeBackgroundColour(mainWidget, m_backgroundColour);
2673
2674     // This not necessary
2675 #if 0
2676
2677     if (m_scrolledWindow && (GetMainWidget() != m_scrolledWindow))
2678     {
2679         DoChangeBackgroundColour(m_scrolledWindow, m_backgroundColour);
2680         // Have to set the scrollbar colours back since
2681         // the scrolled window seemed to change them
2682         wxColour backgroundColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE);
2683
2684         if (m_hScrollBar)
2685             DoChangeBackgroundColour(m_hScrollBar, backgroundColour);
2686         if (m_vScrollBar)
2687             DoChangeBackgroundColour(m_vScrollBar, backgroundColour);
2688     }
2689 #endif
2690 }
2691
2692 void wxWindow::ChangeForegroundColour()
2693 {
2694     WXWidget mainWidget = GetMainWidget();
2695     if ( mainWidget )
2696         DoChangeForegroundColour(mainWidget, m_foregroundColour);
2697     if ( m_scrolledWindow && mainWidget != m_scrolledWindow )
2698         DoChangeForegroundColour(m_scrolledWindow, m_foregroundColour);
2699 }
2700
2701 // Change a widget's foreground and background colours.
2702 void wxWindow::DoChangeForegroundColour(WXWidget widget, wxColour& foregroundColour)
2703 {
2704     // When should we specify the foreground, if it's calculated
2705     // by wxComputeColours?
2706     // Solution: say we start with the default (computed) foreground colour.
2707     // If we call SetForegroundColour explicitly for a control or window,
2708     // then the foreground is changed.
2709     // Therefore SetBackgroundColour computes the foreground colour, and
2710     // SetForegroundColour changes the foreground colour. The ordering is
2711     // important.
2712
2713     Widget w = (Widget)widget;
2714     XtVaSetValues(
2715                   w,
2716                   XmNforeground, foregroundColour.AllocColour(XtDisplay(w)),
2717                   NULL
2718                  );
2719 }
2720
2721 void wxWindow::DoChangeBackgroundColour(WXWidget widget, wxColour& backgroundColour, bool changeArmColour)
2722 {
2723     wxComputeColours (XtDisplay((Widget) widget), & backgroundColour,
2724         (wxColour*) NULL);
2725
2726     XtVaSetValues ((Widget) widget,
2727         XmNbackground, g_itemColors[wxBACK_INDEX].pixel,
2728         XmNtopShadowColor, g_itemColors[wxTOPS_INDEX].pixel,
2729         XmNbottomShadowColor, g_itemColors[wxBOTS_INDEX].pixel,
2730         XmNforeground, g_itemColors[wxFORE_INDEX].pixel,
2731         NULL);
2732
2733     if (changeArmColour)
2734         XtVaSetValues ((Widget) widget,
2735         XmNarmColor, g_itemColors[wxSELE_INDEX].pixel,
2736         NULL);
2737 }
2738
2739 bool wxWindow::SetBackgroundColour(const wxColour& col)
2740 {
2741     if ( !wxWindowBase::SetBackgroundColour(col) )
2742         return FALSE;
2743
2744     ChangeBackgroundColour();
2745
2746     return TRUE;
2747 }
2748
2749 bool wxWindow::SetForegroundColour(const wxColour& col)
2750 {
2751     if ( !wxWindowBase::SetForegroundColour(col) )
2752         return FALSE;
2753
2754     ChangeForegroundColour();
2755
2756     return TRUE;
2757 }
2758
2759 void wxWindow::ChangeFont(bool keepOriginalSize)
2760 {
2761     // Note that this causes the widget to be resized back
2762     // to its original size! We therefore have to set the size
2763     // back again. TODO: a better way in Motif?
2764     Widget w = (Widget) GetLabelWidget(); // Usually the main widget
2765     if (w && m_font.Ok())
2766     {
2767         int width, height, width1, height1;
2768         GetSize(& width, & height);
2769
2770         // lesstif 0.87 hangs here
2771 #ifndef LESSTIF_VERSION
2772         XtVaSetValues (w,
2773             XmNfontList, (XmFontList) m_font.GetFontList(1.0, XtDisplay(w)),
2774             NULL);
2775 #endif
2776
2777         GetSize(& width1, & height1);
2778         if (keepOriginalSize && (width != width1 || height != height1))
2779         {
2780             SetSize(-1, -1, width, height);
2781         }
2782     }
2783 }
2784
2785 // ----------------------------------------------------------------------------
2786 // global functions
2787 // ----------------------------------------------------------------------------
2788
2789 wxWindow *wxGetActiveWindow()
2790 {
2791     // TODO
2792     return NULL;
2793 }
2794
2795 // ----------------------------------------------------------------------------
2796 // wxNoOptimize: switch off size optimization
2797 // ----------------------------------------------------------------------------
2798
2799 int wxNoOptimize::ms_count = 0;