src/mgl/window.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/mgl/window.cpp
   3 // Purpose:     wxWindow
   4 // Author:      Vaclav Slavik
   5 //              (based on GTK & MSW implementations)
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2001 SciTech Software, Inc. (www.scitechsoft.com)
   8 // Licence:     wxWindows license
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 // ===========================================================================
  12 // declarations
  13 // ===========================================================================
  14
  15 // ---------------------------------------------------------------------------
  16 // headers
  17 // ---------------------------------------------------------------------------
  18
  19 #ifdef __GNUG__
  20     #pragma implementation "window.h"
  21 #endif
  22
  23 // For compilers that support precompilation, includes "wx.h".
  24 #include "wx/wxprec.h"
  25
  26 #ifdef __BORLANDC__
  27     #pragma hdrstop
  28 #endif
  29
  30 #ifndef WX_PRECOMP
  31     #include "wx/window.h"
  32     #include "wx/accel.h"
  33     #include "wx/setup.h"
  34     #include "wx/dc.h"
  35     #include "wx/dcclient.h"
  36     #include "wx/utils.h"
  37     #include "wx/app.h"
  38     #include "wx/panel.h"
  39     #include "wx/caret.h"
  40 #endif
  41
  42 #if wxUSE_DRAG_AND_DROP
  43     #include "wx/dnd.h"
  44 #endif
  45
  46 #include "wx/log.h"
  47 #include "wx/sysopt.h"
  48 #include "wx/mgl/private.h"
  49 #include "wx/intl.h"
  50 #include "wx/dcscreen.h"
  51
  52 #include <mgraph.hpp>
  53
  54 #if wxUSE_TOOLTIPS
  55     #include "wx/tooltip.h"
  56 #endif
  57
  58 // ---------------------------------------------------------------------------
  59 // global variables
  60 // ---------------------------------------------------------------------------
  61
  62 // MGL window manager and associated DC.
  63 winmng_t *g_winMng = NULL;
  64 MGLDevCtx *g_displayDC = NULL;
  65
  66 // the window that has keyboard focus:
  67 static wxWindowMGL *gs_focusedWindow = NULL;
  68 // the window that is currently under mouse cursor:
  69 static wxWindowMGL *gs_windowUnderMouse = NULL;
  70 // the window that has mouse capture
  71 static wxWindowMGL *gs_mouseCapture = NULL;
  72 // the frame that is currently active (i.e. its child has focus). It is
  73 // used to generate wxActivateEvents
  74 static wxWindowMGL *gs_activeFrame = NULL;
  75
  76 // ---------------------------------------------------------------------------
  77 // constants
  78 // ---------------------------------------------------------------------------
  79
  80 // Custom identifiers used to distinguish between various event handlers
  81 // and capture handlers passed to MGL_wm
  82 enum
  83 {
  84     wxMGL_CAPTURE_MOUSE = 1,
  85     wxMGL_CAPTURE_KEYB  = 2
  86 };
  87
  88
  89 // ---------------------------------------------------------------------------
  90 // private functions
  91 // ---------------------------------------------------------------------------
  92
  93 // Returns toplevel grandparent of given window:
  94 static wxWindowMGL* wxGetTopLevelParent(wxWindowMGL *win)
  95 {
  96     wxWindowMGL *p = win;
  97     while (p && !p->IsTopLevel())
  98          p = p->GetParent();
  99     return p;
 100 }
 101
 102 #ifdef __WXDEBUG__
 103 // Add an easy way to capture screenshots:
 104 static void CaptureScreenshot()
 105 {
 106     wxBusyCursor bcur;
 107
 108     static int screenshot_num = 0;
 109     char screenshot[128];
 110     sprintf(screenshot, "screenshot-%03i.png", screenshot_num++);
 111     g_displayDC->savePNGFromDC(screenshot, 0, 0,
 112                                g_displayDC->sizex(),
 113                                g_displayDC->sizey());
 114 }
 115 #endif
 116
 117 // ---------------------------------------------------------------------------
 118 // MGL_WM hooks:
 119 // ---------------------------------------------------------------------------
 120
 121 static void MGLAPI wxWindowPainter(window_t *wnd, MGLDC *dc)
 122 {
 123     wxWindowMGL *w = (wxWindow*) wnd->userData;
 124
 125     if ( w && !(w->GetWindowStyle() & wxTRANSPARENT_WINDOW) )
 126     {
 127         MGLDevCtx ctx(dc);
 128         w->HandlePaint(&ctx);
 129     }
 130 }
 131
 132 static ibool MGLAPI wxWindowMouseHandler(window_t *wnd, event_t *e)
 133 {
 134     wxWindowMGL *win = (wxWindowMGL*)MGL_wmGetWindowUserData(wnd);
 135     wxPoint orig(win->GetClientAreaOrigin());
 136     wxPoint where;
 137
 138     MGL_wmCoordGlobalToLocal(win->GetHandle(),
 139                              e->where_x, e->where_y, &where.x, &where.y);
 140
 141     for (wxWindowMGL *w = win; w; w = w->GetParent())
 142     {
 143         if ( !w->IsEnabled() )
 144             return FALSE;
 145         if ( w->IsTopLevel() )
 146             break;
 147     }
 148
 149     wxEventType type = wxEVT_NULL;
 150     wxMouseEvent event;
 151     event.SetEventObject(win);
 152     event.SetTimestamp(e->when);
 153     event.m_x = where.x - orig.x;
 154     event.m_y = where.y - orig.y;
 155     event.m_shiftDown = e->modifiers & EVT_SHIFTKEY;
 156     event.m_controlDown = e->modifiers & EVT_CTRLSTATE;
 157     event.m_altDown = e->modifiers & EVT_LEFTALT;
 158     event.m_metaDown = e->modifiers & EVT_RIGHTALT;
 159     event.m_leftDown = e->modifiers & EVT_LEFTBUT;
 160     event.m_middleDown = e->modifiers & EVT_MIDDLEBUT;
 161     event.m_rightDown = e->modifiers & EVT_RIGHTBUT;
 162
 163     switch (e->what)
 164     {
 165         case EVT_MOUSEDOWN:
 166             if ( e->message & EVT_LEFTBMASK )
 167                 type = (e->message & EVT_DBLCLICK) ?
 168                         wxEVT_LEFT_DCLICK : wxEVT_LEFT_DOWN;
 169             else if ( e->message & EVT_MIDDLEBMASK )
 170                 type = (e->message & EVT_DBLCLICK) ?
 171                         wxEVT_MIDDLE_DCLICK : wxEVT_MIDDLE_DOWN;
 172             else if ( e->message & EVT_RIGHTBMASK )
 173                 type = (e->message & EVT_DBLCLICK) ?
 174                         wxEVT_RIGHT_DCLICK : wxEVT_RIGHT_DOWN;
 175             break;
 176
 177         case EVT_MOUSEUP:
 178             if ( e->message & EVT_LEFTBMASK )
 179                 type = wxEVT_LEFT_UP;
 180             else if ( e->message & EVT_MIDDLEBMASK )
 181                 type = wxEVT_MIDDLE_UP;
 182             else if ( e->message & EVT_RIGHTBMASK )
 183                 type = wxEVT_RIGHT_UP;
 184             break;
 185
 186         case EVT_MOUSEMOVE:
 187             if ( !gs_mouseCapture )
 188             {
 189                 if ( win != gs_windowUnderMouse )
 190                 {
 191                     if ( gs_windowUnderMouse )
 192                     {
 193                         wxMouseEvent event2(event);
 194                         MGL_wmCoordGlobalToLocal(gs_windowUnderMouse->GetHandle(),
 195                                                  e->where_x, e->where_y,
 196                                                  &event2.m_x, &event2.m_y);
 197
 198                         wxPoint orig(gs_windowUnderMouse->GetClientAreaOrigin());
 199                         event2.m_x -= orig.x;
 200                         event2.m_y -= orig.y;
 201
 202                         event2.SetEventObject(gs_windowUnderMouse);
 203                         event2.SetEventType(wxEVT_LEAVE_WINDOW);
 204                         gs_windowUnderMouse->GetEventHandler()->ProcessEvent(event2);
 205                     }
 206
 207                     wxMouseEvent event3(event);
 208                     event3.SetEventType(wxEVT_ENTER_WINDOW);
 209                     win->GetEventHandler()->ProcessEvent(event3);
 210
 211                     gs_windowUnderMouse = win;
 212                 }
 213             }
 214             else // gs_mouseCapture
 215             {
 216                 bool inside = (where.x >= 0 &&
 217                                where.y >= 0 &&
 218                                where.x < win->GetSize().x &&
 219                                where.y < win->GetSize().y);
 220                 if ( (inside && gs_windowUnderMouse != win) ||
 221                      (!inside && gs_windowUnderMouse == win) )
 222                 {
 223                     wxMouseEvent evt(inside ?
 224                                      wxEVT_ENTER_WINDOW : wxEVT_LEAVE_WINDOW);
 225                     evt.SetEventObject(win);
 226                     win->GetEventHandler()->ProcessEvent(evt);
 227                     gs_windowUnderMouse = inside ? win : NULL;
 228                 }
 229             }
 230
 231             type = wxEVT_MOTION;
 232             break;
 233
 234         default:
 235             break;
 236     }
 237
 238     if ( type == wxEVT_NULL )
 239     {
 240         return FALSE;
 241     }
 242     else
 243     {
 244         event.SetEventType(type);
 245         return win->GetEventHandler()->ProcessEvent(event);
 246     }
 247 }
 248
 249 static long wxScanToKeyCode(event_t *event)
 250 {
 251     #define KEY(mgl,wx) case mgl: key = wx; break;
 252
 253     long key = 0;
 254     switch ( EVT_scanCode(event->message) )
 255     {
 256         KEY (KB_padEnter,       WXK_NUMPAD_ENTER)
 257         KEY (KB_padMinus,       WXK_NUMPAD_SUBTRACT)
 258         KEY (KB_padPlus,        WXK_NUMPAD_ADD)
 259         KEY (KB_padTimes,       WXK_NUMPAD_MULTIPLY)
 260         KEY (KB_padDivide,      WXK_NUMPAD_DIVIDE)
 261         KEY (KB_padLeft,        WXK_NUMPAD_LEFT)
 262         KEY (KB_padRight,       WXK_NUMPAD_RIGHT)
 263         KEY (KB_padUp,          WXK_NUMPAD_UP)
 264         KEY (KB_padDown,        WXK_NUMPAD_DOWN)
 265         KEY (KB_padInsert,      WXK_NUMPAD_INSERT)
 266         KEY (KB_padDelete,      WXK_NUMPAD_DELETE)
 267         KEY (KB_padHome,        WXK_NUMPAD_HOME)
 268         KEY (KB_padEnd,         WXK_NUMPAD_END)
 269         KEY (KB_padPageUp,      WXK_NUMPAD_PAGEUP)
 270       //KEY (KB_padPageUp,      WXK_NUMPAD_PRIOR)
 271         KEY (KB_padPageDown,    WXK_NUMPAD_PAGEDOWN)
 272       //KEY (KB_padPageDown,    WXK_NUMPAD_NEXT)
 273         KEY (KB_padCenter,      WXK_NUMPAD_SEPARATOR) // ?
 274         KEY (KB_F1,             WXK_F1)
 275         KEY (KB_F2,             WXK_F2)
 276         KEY (KB_F3,             WXK_F3)
 277         KEY (KB_F4,             WXK_F4)
 278         KEY (KB_F5,             WXK_F5)
 279         KEY (KB_F6,             WXK_F6)
 280         KEY (KB_F7,             WXK_F7)
 281         KEY (KB_F8,             WXK_F8)
 282         KEY (KB_F9,             WXK_F9)
 283         KEY (KB_F10,            WXK_F10)
 284         KEY (KB_F11,            WXK_F11)
 285         KEY (KB_F12,            WXK_F12)
 286         KEY (KB_left,           WXK_LEFT)
 287         KEY (KB_right,          WXK_RIGHT)
 288         KEY (KB_up,             WXK_UP)
 289         KEY (KB_down,           WXK_DOWN)
 290         KEY (KB_insert,         WXK_INSERT)
 291         KEY (KB_delete,         WXK_DELETE)
 292         KEY (KB_home,           WXK_HOME)
 293         KEY (KB_end,            WXK_END)
 294         KEY (KB_pageUp,         WXK_PAGEUP)
 295         KEY (KB_pageDown,       WXK_PAGEDOWN)
 296         KEY (KB_capsLock,       WXK_CAPITAL)
 297         KEY (KB_numLock,        WXK_NUMLOCK)
 298         KEY (KB_scrollLock,     WXK_SCROLL)
 299         KEY (KB_leftShift,      WXK_SHIFT)
 300         KEY (KB_rightShift,     WXK_SHIFT)
 301         KEY (KB_leftCtrl,       WXK_CONTROL)
 302         KEY (KB_rightCtrl,      WXK_CONTROL)
 303         KEY (KB_leftAlt,        WXK_ALT)
 304         KEY (KB_rightAlt,       WXK_ALT)
 305         KEY (KB_leftWindows,    WXK_START)
 306         KEY (KB_rightWindows,   WXK_START)
 307         KEY (KB_menu,           WXK_MENU)
 308         KEY (KB_sysReq,         WXK_SNAPSHOT)
 309         KEY (KB_esc,            WXK_ESCAPE)
 310         KEY (KB_1,              '1')
 311         KEY (KB_2,              '2')
 312         KEY (KB_3,              '3')
 313         KEY (KB_4,              '4')
 314         KEY (KB_5,              '5')
 315         KEY (KB_6,              '6')
 316         KEY (KB_7,              '7')
 317         KEY (KB_8,              '8')
 318         KEY (KB_9,              '9')
 319         KEY (KB_0,              '0')
 320         KEY (KB_minus,          WXK_SUBTRACT)
 321         KEY (KB_equals,         WXK_ADD)
 322         KEY (KB_backSlash,      '\\')
 323         KEY (KB_backspace,      WXK_BACK)
 324         KEY (KB_tab,            WXK_TAB)
 325         KEY (KB_Q,              'Q')
 326         KEY (KB_W,              'W')
 327         KEY (KB_E,              'E')
 328         KEY (KB_R,              'R')
 329         KEY (KB_T,              'T')
 330         KEY (KB_Y,              'Y')
 331         KEY (KB_U,              'U')
 332         KEY (KB_I,              'I')
 333         KEY (KB_O,              'O')
 334         KEY (KB_P,              'P')
 335         KEY (KB_leftSquareBrace,'[')
 336         KEY (KB_rightSquareBrace,']')
 337         KEY (KB_enter,          WXK_RETURN)
 338         KEY (KB_A,              'A')
 339         KEY (KB_S,              'S')
 340         KEY (KB_D,              'D')
 341         KEY (KB_F,              'F')
 342         KEY (KB_G,              'G')
 343         KEY (KB_H,              'H')
 344         KEY (KB_J,              'J')
 345         KEY (KB_K,              'K')
 346         KEY (KB_L,              'L')
 347         KEY (KB_semicolon,      ';')
 348         KEY (KB_apostrophe,     '\'')
 349         KEY (KB_Z,              'Z')
 350         KEY (KB_X,              'X')
 351         KEY (KB_C,              'C')
 352         KEY (KB_V,              'V')
 353         KEY (KB_B,              'B')
 354         KEY (KB_N,              'N')
 355         KEY (KB_M,              'M')
 356         KEY (KB_comma,          ',')
 357         KEY (KB_period,         '.')
 358         KEY (KB_divide,         WXK_DIVIDE)
 359         KEY (KB_space,          WXK_SPACE)
 360         KEY (KB_tilde,          '~')
 361
 362         default:
 363             key = EVT_asciiCode(event->message);
 364             break;
 365     }
 366
 367     #undef KEY
 368
 369     return key;
 370 }
 371
 372 static long wxAsciiToKeyCode(event_t *event)
 373 {
 374     return (long)EVT_asciiCode(event->message);
 375 }
 376
 377 static ibool MGLAPI wxWindowKeybHandler(window_t *wnd, event_t *e)
 378 {
 379     wxWindowMGL *win = (wxWindowMGL*)MGL_wmGetWindowUserData(wnd);
 380
 381     if ( !win->IsEnabled() ) return FALSE;
 382
 383     wxPoint where;
 384     MGL_wmCoordGlobalToLocal(win->GetHandle(),
 385                              e->where_x, e->where_y, &where.x, &where.y);
 386
 387     wxKeyEvent event;
 388     event.SetEventObject(win);
 389     event.SetTimestamp(e->when);
 390     event.m_keyCode = wxScanToKeyCode(e);
 391     event.m_scanCode = 0; // not used by wx at all
 392     event.m_x = where.x;
 393     event.m_y = where.y;
 394     event.m_shiftDown = e->modifiers & EVT_SHIFTKEY;
 395     event.m_controlDown = e->modifiers & EVT_CTRLSTATE;
 396     event.m_altDown = e->modifiers & EVT_LEFTALT;
 397     event.m_metaDown = e->modifiers & EVT_RIGHTALT;
 398
 399     if ( e->what == EVT_KEYUP )
 400     {
 401         event.SetEventType(wxEVT_KEY_UP);
 402         return win->GetEventHandler()->ProcessEvent(event);
 403     }
 404     else
 405     {
 406         bool ret;
 407         wxKeyEvent event2;
 408
 409         event.SetEventType(wxEVT_KEY_DOWN);
 410         event2 = event;
 411
 412         ret = win->GetEventHandler()->ProcessEvent(event);
 413
 414
 415 #ifdef __WXDEBUG__
 416         // Add an easy way to capture screenshots:
 417         if ( event.m_keyCode == WXK_F1 &&
 418              event.m_shiftDown && event.m_controlDown )
 419             CaptureScreenshot();
 420 #endif
 421
 422 #if wxUSE_ACCEL
 423         if ( !ret )
 424         {
 425             for (wxWindowMGL *w = win; w; w = w->GetParent())
 426             {
 427                 int command = w->GetAcceleratorTable()->GetCommand(event);
 428                 if ( command != -1 )
 429                 {
 430                     wxCommandEvent eventc(wxEVT_COMMAND_MENU_SELECTED, command);
 431                     ret = w->GetEventHandler()->ProcessEvent(eventc);
 432                     break;
 433                 }
 434                 if ( w->IsTopLevel() )
 435                     break;
 436             }
 437         }
 438 #endif // wxUSE_ACCEL
 439
 440         /* wxMSW doesn't send char events with Alt pressed */
 441         /* Only send wxEVT_CHAR event if not processed yet. Thus, ALT-x
 442            will only be sent if it is not in an accelerator table. */
 443         event2.m_keyCode = wxAsciiToKeyCode(e);
 444         if ( !ret && event2.m_keyCode != 0 )
 445         {
 446             event2.SetEventType(wxEVT_CHAR);
 447             ret = win->GetEventHandler()->ProcessEvent(event2);
 448         }
 449
 450         return ret;
 451     }
 452 }
 453
 454 // ---------------------------------------------------------------------------
 455 // event tables
 456 // ---------------------------------------------------------------------------
 457
 458 // in wxUniv this class is abstract because it doesn't have DoPopupMenu()
 459 IMPLEMENT_ABSTRACT_CLASS(wxWindowMGL, wxWindowBase)
 460
 461 BEGIN_EVENT_TABLE(wxWindowMGL, wxWindowBase)
 462 END_EVENT_TABLE()
 463
 464 // ===========================================================================
 465 // implementation
 466 // ===========================================================================
 467
 468 // ----------------------------------------------------------------------------
 469 // constructors and such
 470 // ----------------------------------------------------------------------------
 471
 472 void wxWindowMGL::Init()
 473 {
 474     // First of all, make sure window manager is up and running. If it is
 475     // not the case, initialize it in default display mode
 476     if ( !g_winMng )
 477         wxTheApp->SetDisplayMode(wxDisplayModeInfo(640, 480, 16));
 478
 479     // generic:
 480     InitBase();
 481
 482     // mgl specific:
 483     m_wnd = NULL;
 484     m_isShown = TRUE;
 485     m_isBeingDeleted = FALSE;
 486     m_isEnabled = TRUE;
 487     m_frozen = FALSE;
 488     m_paintMGLDC = NULL;
 489     m_eraseBackground = -1;
 490 }
 491
 492 // Destructor
 493 wxWindowMGL::~wxWindowMGL()
 494 {
 495     m_isBeingDeleted = TRUE;
 496
 497     if ( gs_mouseCapture == this )
 498         ReleaseMouse();
 499
 500     if (gs_activeFrame == this)
 501     {
 502        gs_activeFrame = NULL;
 503        // activate next frame in Z-order:
 504        if ( m_wnd->prev )
 505        {
 506            wxWindowMGL *win = (wxWindowMGL*)m_wnd->prev->userData;
 507            win->SetFocus();
 508         }
 509     }
 510
 511     if ( gs_focusedWindow == this )
 512         KillFocus();
 513
 514     if ( gs_windowUnderMouse == this )
 515         gs_windowUnderMouse = NULL;
 516
 517     // VS: destroy children first and _then_ detach *this from its parent.
 518     //     If we'd do it the other way around, children wouldn't be able
 519     //     find their parent frame (see above).
 520     DestroyChildren();
 521
 522     if ( m_parent )
 523         m_parent->RemoveChild(this);
 524
 525     if ( m_wnd )
 526         MGL_wmDestroyWindow(m_wnd);
 527 }
 528
 529 // real construction (Init() must have been called before!)
 530 bool wxWindowMGL::Create(wxWindow *parent,
 531                          wxWindowID id,
 532                          const wxPoint& pos,
 533                          const wxSize& size,
 534                          long style,
 535                          const wxString& name)
 536 {
 537     if ( !CreateBase(parent, id, pos, size, style, wxDefaultValidator, name) )
 538         return FALSE;
 539
 540     if ( parent )
 541         parent->AddChild(this);
 542
 543     int x, y, w, h;
 544     x = pos.x, y = pos.y;
 545     if ( x == -1 )
 546         x = 0; // FIXME_MGL, something better, see GTK+
 547     if ( y == -1 )
 548         y = 0; // FIXME_MGL, something better, see GTK+
 549     w = WidthDefault(size.x);
 550     h = HeightDefault(size.y);
 551
 552     long mgl_style = 0;
 553     window_t *wnd_parent = parent ? parent->GetHandle() : NULL;
 554
 555     if ( !(style & wxNO_FULL_REPAINT_ON_RESIZE) )
 556     {
 557         mgl_style |= MGL_WM_FULL_REPAINT_ON_RESIZE;
 558     }
 559     if ( style & wxSTAY_ON_TOP )
 560     {
 561         mgl_style |= MGL_WM_ALWAYS_ON_TOP;
 562     }
 563     if ( style & wxPOPUP_WINDOW )
 564     {
 565         mgl_style |= MGL_WM_ALWAYS_ON_TOP;
 566         // it is created hidden as other top level windows
 567         m_isShown = FALSE;
 568         wnd_parent = NULL;
 569     }
 570
 571     window_t *wnd = MGL_wmCreateWindow(g_winMng, wnd_parent, x, y, w, h);
 572
 573     MGL_wmSetWindowFlags(wnd, mgl_style);
 574     MGL_wmShowWindow(wnd, m_isShown);
 575
 576     SetMGLwindow_t(wnd);
 577
 578     return TRUE;
 579 }
 580
 581 void wxWindowMGL::SetMGLwindow_t(struct window_t *wnd)
 582 {
 583     if ( m_wnd )
 584         MGL_wmDestroyWindow(m_wnd);
 585
 586     m_wnd = wnd;
 587     if ( !m_wnd ) return;
 588
 589     m_isShown = m_wnd->visible;
 590
 591     MGL_wmSetWindowUserData(m_wnd, (void*) this);
 592     MGL_wmSetWindowPainter(m_wnd, wxWindowPainter);
 593     MGL_wmPushWindowEventHandler(m_wnd, wxWindowMouseHandler, EVT_MOUSEEVT, 0);
 594     MGL_wmPushWindowEventHandler(m_wnd, wxWindowKeybHandler, EVT_KEYEVT, 0);
 595
 596     if ( m_cursor.Ok() )
 597         MGL_wmSetWindowCursor(m_wnd, *m_cursor.GetMGLCursor());
 598     else
 599         MGL_wmSetWindowCursor(m_wnd, *wxSTANDARD_CURSOR->GetMGLCursor());
 600 }
 601
 602 // ---------------------------------------------------------------------------
 603 // basic operations
 604 // ---------------------------------------------------------------------------
 605
 606 void wxWindowMGL::SetFocus()
 607 {
 608     if ( gs_focusedWindow == this ) return;
 609
 610     if ( gs_focusedWindow )
 611         gs_focusedWindow->KillFocus();
 612
 613     gs_focusedWindow = this;
 614
 615     MGL_wmCaptureEvents(GetHandle(), EVT_KEYEVT, wxMGL_CAPTURE_KEYB);
 616
 617 #if wxUSE_CARET
 618     // caret needs to be informed about focus change
 619     wxCaret *caret = GetCaret();
 620     if ( caret )
 621         caret->OnSetFocus();
 622 #endif // wxUSE_CARET
 623
 624     wxWindowMGL *active = wxGetTopLevelParent(this);
 625     if ( !(m_windowStyle & wxPOPUP_WINDOW) && active != gs_activeFrame )
 626     {
 627         if ( gs_activeFrame )
 628         {
 629             wxActivateEvent event(wxEVT_ACTIVATE, FALSE, gs_activeFrame->GetId());
 630             event.SetEventObject(gs_activeFrame);
 631             gs_activeFrame->GetEventHandler()->ProcessEvent(event);
 632         }
 633
 634         gs_activeFrame = active;
 635         wxActivateEvent event(wxEVT_ACTIVATE, TRUE, gs_activeFrame->GetId());
 636         event.SetEventObject(gs_activeFrame);
 637         gs_activeFrame->GetEventHandler()->ProcessEvent(event);
 638     }
 639
 640     wxFocusEvent event(wxEVT_SET_FOCUS, GetId());
 641     event.SetEventObject(this);
 642     GetEventHandler()->ProcessEvent(event);
 643 }
 644
 645 void wxWindowMGL::KillFocus()
 646 {
 647     if ( gs_focusedWindow != this ) return;
 648     gs_focusedWindow = NULL;
 649
 650     if ( m_isBeingDeleted ) return;
 651
 652     MGL_wmUncaptureEvents(GetHandle(), wxMGL_CAPTURE_KEYB);
 653
 654 #if wxUSE_CARET
 655     // caret needs to be informed about focus change
 656     wxCaret *caret = GetCaret();
 657     if ( caret )
 658         caret->OnKillFocus();
 659 #endif // wxUSE_CARET
 660
 661     wxFocusEvent event(wxEVT_KILL_FOCUS, GetId());
 662     event.SetEventObject(this);
 663     GetEventHandler()->ProcessEvent(event);
 664 }
 665
 666 // ----------------------------------------------------------------------------
 667 // this wxWindowBase function is implemented here (in platform-specific file)
 668 // because it is static and so couldn't be made virtual
 669 // ----------------------------------------------------------------------------
 670 wxWindow *wxWindowBase::FindFocus()
 671 {
 672     return (wxWindow*)gs_focusedWindow;
 673 }
 674
 675 bool wxWindowMGL::Show(bool show)
 676 {
 677     if ( !wxWindowBase::Show(show) )
 678         return FALSE;
 679
 680     MGL_wmShowWindow(m_wnd, show);
 681
 682     if (!show && gs_activeFrame == this)
 683     {
 684        // activate next frame in Z-order:
 685        if ( m_wnd->prev )
 686        {
 687            wxWindowMGL *win = (wxWindowMGL*)m_wnd->prev->userData;
 688            win->SetFocus();
 689         }
 690     }
 691
 692     return TRUE;
 693 }
 694
 695 // Raise the window to the top of the Z order
 696 void wxWindowMGL::Raise()
 697 {
 698     MGL_wmRaiseWindow(m_wnd);
 699 }
 700
 701 // Lower the window to the bottom of the Z order
 702 void wxWindowMGL::Lower()
 703 {
 704     MGL_wmLowerWindow(m_wnd);
 705 }
 706
 707 void wxWindowMGL::CaptureMouse()
 708 {
 709     if ( gs_mouseCapture )
 710         MGL_wmUncaptureEvents(gs_mouseCapture->m_wnd, wxMGL_CAPTURE_MOUSE);
 711
 712     gs_mouseCapture = this;
 713     MGL_wmCaptureEvents(m_wnd, EVT_MOUSEEVT, wxMGL_CAPTURE_MOUSE);
 714 }
 715
 716 void wxWindowMGL::ReleaseMouse()
 717 {
 718     wxASSERT_MSG( gs_mouseCapture == this, wxT("attempt to release mouse, but this window hasn't captured it") )
 719
 720     MGL_wmUncaptureEvents(m_wnd, wxMGL_CAPTURE_MOUSE);
 721     gs_mouseCapture = NULL;
 722 }
 723
 724 /* static */ wxWindow *wxWindowBase::GetCapture()
 725 {
 726     return (wxWindow*)gs_mouseCapture;
 727 }
 728
 729 bool wxWindowMGL::SetCursor(const wxCursor& cursor)
 730 {
 731     if ( !wxWindowBase::SetCursor(cursor) )
 732     {
 733         // no change
 734         return FALSE;
 735     }
 736
 737     if ( m_cursor.Ok() )
 738         MGL_wmSetWindowCursor(m_wnd, *m_cursor.GetMGLCursor());
 739     else
 740         MGL_wmSetWindowCursor(m_wnd, *wxSTANDARD_CURSOR->GetMGLCursor());
 741
 742     return TRUE;
 743 }
 744
 745 void wxWindowMGL::WarpPointer(int x, int y)
 746 {
 747     ClientToScreen(&x, &y);
 748     EVT_setMousePos(x, y);
 749 }
 750
 751 #if WXWIN_COMPATIBILITY
 752 // If nothing defined for this, try the parent.
 753 // E.g. we may be a button loaded from a resource, with no callback function
 754 // defined.
 755 void wxWindowMGL::OnCommand(wxWindow& win, wxCommandEvent& event)
 756 {
 757     if ( GetEventHandler()->ProcessEvent(event)  )
 758         return;
 759     if ( m_parent )
 760         m_parent->GetEventHandler()->OnCommand(win, event);
 761 }
 762 #endif // WXWIN_COMPATIBILITY_2
 763
 764 #if WXWIN_COMPATIBILITY
 765 wxObject* wxWindowMGL::GetChild(int number) const
 766 {
 767     // Return a pointer to the Nth object in the Panel
 768     wxNode *node = GetChildren().First();
 769     int n = number;
 770     while (node && n--)
 771         node = node->Next();
 772     if ( node )
 773     {
 774         wxObject *obj = (wxObject *)node->Data();
 775         return(obj);
 776     }
 777     else
 778         return NULL;
 779 }
 780 #endif // WXWIN_COMPATIBILITY
 781
 782 // Set this window to be the child of 'parent'.
 783 bool wxWindowMGL::Reparent(wxWindowBase *parent)
 784 {
 785     if ( !wxWindowBase::Reparent(parent) )
 786         return FALSE;
 787
 788     MGL_wmReparentWindow(m_wnd, parent->GetHandle());
 789
 790     return TRUE;
 791 }
 792
 793
 794 // ---------------------------------------------------------------------------
 795 // drag and drop
 796 // ---------------------------------------------------------------------------
 797
 798 #if wxUSE_DRAG_AND_DROP
 799
 800 void wxWindowMGL::SetDropTarget(wxDropTarget *pDropTarget)
 801 {
 802     if ( m_dropTarget != 0 ) {
 803         m_dropTarget->Revoke(m_hWnd);
 804         delete m_dropTarget;
 805     }
 806
 807     m_dropTarget = pDropTarget;
 808     if ( m_dropTarget != 0 )
 809         m_dropTarget->Register(m_hWnd);
 810 }
 811 // FIXME_MGL
 812 #endif // wxUSE_DRAG_AND_DROP
 813
 814 // old style file-manager drag&drop support: we retain the old-style
 815 // DragAcceptFiles in parallel with SetDropTarget.
 816 void wxWindowMGL::DragAcceptFiles(bool accept)
 817 {
 818 #if 0 // FIXME_MGL
 819     HWND hWnd = GetHwnd();
 820     if ( hWnd )
 821         ::DragAcceptFiles(hWnd, (BOOL)accept);
 822 #endif
 823 }
 824
 825 // ---------------------------------------------------------------------------
 826 // moving and resizing
 827 // ---------------------------------------------------------------------------
 828
 829 // Get total size
 830 void wxWindowMGL::DoGetSize(int *x, int *y) const
 831 {
 832     if (x) *x = m_wnd->width;
 833     if (y) *y = m_wnd->height;
 834 }
 835
 836 void wxWindowMGL::DoGetPosition(int *x, int *y) const
 837 {
 838     if (x) *x = m_wnd->x;
 839     if (y) *y = m_wnd->y;
 840 }
 841
 842 void wxWindowMGL::DoScreenToClient(int *x, int *y) const
 843 {
 844     int ax, ay;
 845     MGL_wmCoordGlobalToLocal(m_wnd, 0, 0, &ax, &ay);
 846     if (x)
 847         (*x) += ax;
 848     if (y)
 849         (*y) += ay;
 850 }
 851
 852 void wxWindowMGL::DoClientToScreen(int *x, int *y) const
 853 {
 854     int ax, ay;
 855     MGL_wmCoordLocalToGlobal(m_wnd, 0, 0, &ax, &ay);
 856     if (x)
 857         (*x) += ax;
 858     if (y)
 859         (*y) += ay;
 860 }
 861
 862 // Get size *available for subwindows* i.e. excluding menu bar etc.
 863 void wxWindowMGL::DoGetClientSize(int *x, int *y) const
 864 {
 865     DoGetSize(x, y);
 866 }
 867
 868 void wxWindowMGL::DoMoveWindow(int x, int y, int width, int height)
 869 {
 870     MGL_wmSetWindowPosition(GetHandle(), x, y, width, height);
 871 }
 872
 873 // set the size of the window: if the dimensions are positive, just use them,
 874 // but if any of them is equal to -1, it means that we must find the value for
 875 // it ourselves (unless sizeFlags contains wxSIZE_ALLOW_MINUS_ONE flag, in
 876 // which case -1 is a valid value for x and y)
 877 //
 878 // If sizeFlags contains wxSIZE_AUTO_WIDTH/HEIGHT flags (default), we calculate
 879 // the width/height to best suit our contents, otherwise we reuse the current
 880 // width/height
 881 void wxWindowMGL::DoSetSize(int x, int y, int width, int height, int sizeFlags)
 882 {
 883     // get the current size and position...
 884     int currentX, currentY;
 885     GetPosition(&currentX, &currentY);
 886     int currentW,currentH;
 887     GetSize(&currentW, &currentH);
 888
 889     // ... and don't do anything (avoiding flicker) if it's already ok
 890     if ( x == currentX && y == currentY &&
 891          width == currentW && height == currentH )
 892     {
 893         return;
 894     }
 895
 896     if ( x == -1 && !(sizeFlags & wxSIZE_ALLOW_MINUS_ONE) )
 897         x = currentX;
 898     if ( y == -1 && !(sizeFlags & wxSIZE_ALLOW_MINUS_ONE) )
 899         y = currentY;
 900
 901     AdjustForParentClientOrigin(x, y, sizeFlags);
 902
 903     wxSize size(-1, -1);
 904     if ( width == -1 )
 905     {
 906         if ( sizeFlags & wxSIZE_AUTO_WIDTH )
 907         {
 908             size = DoGetBestSize();
 909             width = size.x;
 910         }
 911         else
 912         {
 913             // just take the current one
 914             width = currentW;
 915         }
 916     }
 917
 918     if ( height == -1 )
 919     {
 920         if ( sizeFlags & wxSIZE_AUTO_HEIGHT )
 921         {
 922             if ( size.x == -1 )
 923             {
 924                 size = DoGetBestSize();
 925             }
 926             //else: already called DoGetBestSize() above
 927
 928             height = size.y;
 929         }
 930         else
 931         {
 932             // just take the current one
 933             height = currentH;
 934         }
 935     }
 936
 937     if ( m_wnd->x != x || m_wnd->y != y ||
 938          (int)m_wnd->width != width || (int)m_wnd->height != height )
 939     {
 940         DoMoveWindow(x, y, width, height);
 941
 942         wxSizeEvent event(wxSize(width, height), GetId());
 943         event.SetEventObject(this);
 944         GetEventHandler()->ProcessEvent(event);
 945     }
 946 }
 947
 948 void wxWindowMGL::DoSetClientSize(int width, int height)
 949 {
 950     SetSize(width, height);
 951 }
 952
 953 // ---------------------------------------------------------------------------
 954 // text metrics
 955 // ---------------------------------------------------------------------------
 956
 957 int wxWindowMGL::GetCharHeight() const
 958 {
 959     wxScreenDC dc;
 960     dc.SetFont(m_font);
 961     return dc.GetCharHeight();
 962 }
 963
 964 int wxWindowMGL::GetCharWidth() const
 965 {
 966     wxScreenDC dc;
 967     dc.SetFont(m_font);
 968     return dc.GetCharWidth();
 969 }
 970
 971 void wxWindowMGL::GetTextExtent(const wxString& string,
 972                              int *x, int *y,
 973                              int *descent, int *externalLeading,
 974                              const wxFont *theFont) const
 975 {
 976     wxScreenDC dc;
 977     if (!theFont)
 978         theFont = &m_font;
 979     dc.GetTextExtent(string, x, y, descent, externalLeading, (wxFont*)theFont);
 980 }
 981
 982 #if wxUSE_CARET && WXWIN_COMPATIBILITY
 983 // ---------------------------------------------------------------------------
 984 // Caret manipulation
 985 // ---------------------------------------------------------------------------
 986
 987 void wxWindowMGL::CreateCaret(int w, int h)
 988 {
 989     SetCaret(new wxCaret(this, w, h));
 990 }
 991
 992 void wxWindowMGL::CreateCaret(const wxBitmap *WXUNUSED(bitmap))
 993 {
 994     wxFAIL_MSG("not implemented");
 995 }
 996
 997 void wxWindowMGL::ShowCaret(bool show)
 998 {
 999     wxCHECK_RET( m_caret, "no caret to show" );
1000
1001     m_caret->Show(show);
1002 }
1003
1004 void wxWindowMGL::DestroyCaret()
1005 {
1006     SetCaret(NULL);
1007 }
1008
1009 void wxWindowMGL::SetCaretPos(int x, int y)
1010 {
1011     wxCHECK_RET( m_caret, "no caret to move" );
1012
1013     m_caret->Move(x, y);
1014 }
1015
1016 void wxWindowMGL::GetCaretPos(int *x, int *y) const
1017 {
1018     wxCHECK_RET( m_caret, "no caret to get position of" );
1019
1020     m_caret->GetPosition(x, y);
1021 }
1022 #endif // wxUSE_CARET
1023
1024
1025 // ---------------------------------------------------------------------------
1026 // painting
1027 // ---------------------------------------------------------------------------
1028
1029 void wxWindowMGL::Clear()
1030 {
1031     wxClientDC dc((wxWindow *)this);
1032     wxBrush brush(GetBackgroundColour(), wxSOLID);
1033     dc.SetBackground(brush);
1034     dc.Clear();
1035 }
1036
1037 #include "wx/menu.h"
1038 void wxWindowMGL::Refresh(bool eraseBack, const wxRect *rect)
1039 {
1040     if ( m_eraseBackground == -1 )
1041         m_eraseBackground = eraseBack;
1042     else
1043         m_eraseBackground |= eraseBack;
1044
1045     if ( rect )
1046     {
1047         rect_t r;
1048         r.left = rect->GetLeft(), r.right = rect->GetRight();
1049         r.top = rect->GetTop(), r.bottom = rect->GetBottom();
1050         MGL_wmInvalidateWindowRect(GetHandle(), &r);
1051     }
1052     else
1053         MGL_wmInvalidateWindow(GetHandle());
1054 }
1055
1056 void wxWindowMGL::Update()
1057 {
1058     if ( !m_frozen )
1059         MGL_wmUpdateDC(g_winMng);
1060 }
1061
1062 void wxWindowMGL::Freeze()
1063 {
1064     m_frozen = TRUE;
1065     m_refreshAfterThaw = FALSE;
1066 }
1067
1068 void wxWindowMGL::Thaw()
1069 {
1070     m_frozen = FALSE;
1071     if ( m_refreshAfterThaw )
1072         Refresh();
1073 }
1074
1075 void wxWindowMGL::HandlePaint(MGLDevCtx *dc)
1076 {
1077     if ( m_frozen )
1078     {
1079         // Don't paint anything if the window is frozen.
1080         m_refreshAfterThaw = TRUE;
1081         return;
1082     }
1083
1084 #if 0 // FIXME_MGL -- debugging stuff!
1085     dc->setColorRGB(255,0,255);
1086     dc->fillRect(-1000,-1000,2000,2000);
1087     wxUsleep(50);
1088 #endif
1089
1090     MGLRegion clip;
1091     dc->getClipRegion(clip);
1092     m_updateRegion = wxRegion(clip);
1093     m_paintMGLDC = dc;
1094
1095     if ( m_eraseBackground != 0 )
1096     {
1097         wxWindowDC dc((wxWindow*)this);
1098         wxEraseEvent eventEr(m_windowId, &dc);
1099         eventEr.SetEventObject(this);
1100         GetEventHandler()->ProcessEvent(eventEr);
1101     }
1102     m_eraseBackground = -1;
1103
1104     wxNcPaintEvent eventNc(GetId());
1105     eventNc.SetEventObject(this);
1106     GetEventHandler()->ProcessEvent(eventNc);
1107
1108     wxPaintEvent eventPt(GetId());
1109     eventPt.SetEventObject(this);
1110     GetEventHandler()->ProcessEvent(eventPt);
1111
1112     m_paintMGLDC = NULL;
1113     m_updateRegion.Clear();
1114 }
1115
1116
1117 // Find the wxWindow at the current mouse position, returning the mouse
1118 // position.
1119 wxWindow* wxFindWindowAtPointer(wxPoint& pt)
1120 {
1121     return wxFindWindowAtPoint(pt = wxGetMousePosition());
1122 }
1123
1124 wxWindow* wxFindWindowAtPoint(const wxPoint& pt)
1125 {
1126     window_t *wnd = MGL_wmGetWindowAtPosition(g_winMng, pt.x, pt.y);
1127     return (wxWindow*)wnd->userData;
1128 }