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) 2001-2002 SciTech Software, Inc. (www.scitechsoft.com)
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 // ===========================================================================
  12 // declarations
  13 // ===========================================================================
  14
  15 // ---------------------------------------------------------------------------
  16 // headers
  17 // ---------------------------------------------------------------------------
  18
  19 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  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/msgdlg.h"
  33     #include "wx/accel.h"
  34     #include "wx/setup.h"
  35     #include "wx/dc.h"
  36     #include "wx/dcclient.h"
  37     #include "wx/utils.h"
  38     #include "wx/app.h"
  39     #include "wx/panel.h"
  40     #include "wx/caret.h"
  41 #endif
  42
  43 #if wxUSE_DRAG_AND_DROP
  44     #include "wx/dnd.h"
  45 #endif
  46
  47 #include "wx/log.h"
  48 #include "wx/sysopt.h"
  49 #include "wx/mgl/private.h"
  50 #include "wx/intl.h"
  51 #include "wx/dcscreen.h"
  52
  53 #include <mgraph.hpp>
  54
  55 #if wxUSE_TOOLTIPS
  56     #include "wx/tooltip.h"
  57 #endif
  58
  59 // ---------------------------------------------------------------------------
  60 // global variables
  61 // ---------------------------------------------------------------------------
  62
  63 // MGL window manager and associated DC.
  64 winmng_t *g_winMng = NULL;
  65 MGLDevCtx *g_displayDC = NULL;
  66
  67 // the window that has keyboard focus:
  68 static wxWindowMGL *gs_focusedWindow = NULL;
  69 // the window that is about to be focused after currently focused
  70 // one looses focus:
  71 static wxWindow *gs_toBeFocusedWindow = NULL;
  72 // the window that is currently under mouse cursor:
  73 static wxWindowMGL *gs_windowUnderMouse = NULL;
  74 // the window that has mouse capture
  75 static wxWindowMGL *gs_mouseCapture = NULL;
  76 // the frame that is currently active (i.e. its child has focus). It is
  77 // used to generate wxActivateEvents
  78 static wxWindowMGL *gs_activeFrame = NULL;
  79
  80 // ---------------------------------------------------------------------------
  81 // constants
  82 // ---------------------------------------------------------------------------
  83
  84 // Custom identifiers used to distinguish between various event handlers
  85 // and capture handlers passed to MGL_wm
  86 enum
  87 {
  88     wxMGL_CAPTURE_MOUSE = 1,
  89     wxMGL_CAPTURE_KEYB  = 2
  90 };
  91
  92
  93 // ---------------------------------------------------------------------------
  94 // private functions
  95 // ---------------------------------------------------------------------------
  96
  97 // Returns toplevel grandparent of given window:
  98 static wxWindowMGL* wxGetTopLevelParent(wxWindowMGL *win)
  99 {
 100     wxWindowMGL *p = win;
 101     while (p && !p->IsTopLevel())
 102          p = p->GetParent();
 103     return p;
 104 }
 105
 106 // An easy way to capture screenshots:
 107 static void wxCaptureScreenshot(bool activeWindowOnly)
 108 {
 109 #ifdef __DOS__
 110     #define SCREENSHOT_FILENAME _T("sshot%03i.png")
 111 #else
 112     #define SCREENSHOT_FILENAME _T("screenshot-%03i.png")
 113 #endif
 114     static int screenshot_num = 0;
 115     wxString screenshot;
 116
 117     do
 118     {
 119         screenshot.Printf(SCREENSHOT_FILENAME, screenshot_num++);
 120     } while ( wxFileExists(screenshot) && screenshot_num < 1000 );
 121
 122     wxRect r(0, 0, g_displayDC->sizex(), g_displayDC->sizey());
 123
 124     if ( activeWindowOnly && gs_activeFrame )
 125     {
 126         r.Intersect(gs_activeFrame->GetRect());
 127     }
 128
 129     g_displayDC->savePNGFromDC(screenshot.mb_str(),
 130                                r.x, r. y, r.x+r.width, r.y+r.height);
 131
 132     wxMessageBox(wxString::Format(_T("Screenshot captured: %s"),
 133                                   screenshot.c_str()));
 134 }
 135
 136 // ---------------------------------------------------------------------------
 137 // MGL_WM hooks:
 138 // ---------------------------------------------------------------------------
 139
 140 static void MGLAPI wxWindowPainter(window_t *wnd, MGLDC *dc)
 141 {
 142     wxWindowMGL *w = (wxWindow*) wnd->userData;
 143
 144     if ( w && !(w->GetWindowStyle() & wxTRANSPARENT_WINDOW) )
 145     {
 146         MGLDevCtx ctx(dc);
 147         w->HandlePaint(&ctx);
 148     }
 149 }
 150
 151 static ibool MGLAPI wxWindowMouseHandler(window_t *wnd, event_t *e)
 152 {
 153     wxWindowMGL *win = (wxWindowMGL*)MGL_wmGetWindowUserData(wnd);
 154     wxPoint orig(win->GetClientAreaOrigin());
 155     wxPoint where;
 156
 157     MGL_wmCoordGlobalToLocal(win->GetHandle(),
 158                              e->where_x, e->where_y, &where.x, &where.y);
 159
 160     for (wxWindowMGL *w = win; w; w = w->GetParent())
 161     {
 162         if ( !w->IsEnabled() )
 163             return FALSE;
 164         if ( w->IsTopLevel() )
 165             break;
 166     }
 167
 168     wxEventType type = wxEVT_NULL;
 169     wxMouseEvent event;
 170     event.SetEventObject(win);
 171     event.SetTimestamp(e->when);
 172     event.m_x = where.x - orig.x;
 173     event.m_y = where.y - orig.y;
 174     event.m_shiftDown = e->modifiers & EVT_SHIFTKEY;
 175     event.m_controlDown = e->modifiers & EVT_CTRLSTATE;
 176     event.m_altDown = e->modifiers & EVT_LEFTALT;
 177     event.m_metaDown = e->modifiers & EVT_RIGHTALT;
 178     event.m_leftDown = e->modifiers & EVT_LEFTBUT;
 179     event.m_middleDown = e->modifiers & EVT_MIDDLEBUT;
 180     event.m_rightDown = e->modifiers & EVT_RIGHTBUT;
 181
 182     switch (e->what)
 183     {
 184         case EVT_MOUSEDOWN:
 185             // Change focus if the user clicks outside focused window:
 186             if ( win->AcceptsFocus() && wxWindow::FindFocus() != win )
 187                 win->SetFocus();
 188
 189             if ( e->message & EVT_DBLCLICK )
 190             {
 191                 if ( e->message & EVT_LEFTBMASK )
 192                     type = wxEVT_LEFT_DCLICK;
 193                 else if ( e->message & EVT_MIDDLEBMASK )
 194                     type = wxEVT_MIDDLE_DCLICK;
 195                 else if ( e->message & EVT_RIGHTBMASK )
 196                     type = wxEVT_RIGHT_DCLICK;
 197             }
 198             else
 199             {
 200                 if ( e->message & EVT_LEFTBMASK )
 201                     type = wxEVT_LEFT_DOWN;
 202                 else if ( e->message & EVT_MIDDLEBMASK )
 203                     type = wxEVT_MIDDLE_DOWN;
 204                 else if ( e->message & EVT_RIGHTBMASK )
 205                     type = wxEVT_RIGHT_DOWN;
 206             }
 207
 208             break;
 209
 210         case EVT_MOUSEUP:
 211             if ( e->message & EVT_LEFTBMASK )
 212                 type = wxEVT_LEFT_UP;
 213             else if ( e->message & EVT_MIDDLEBMASK )
 214                 type = wxEVT_MIDDLE_UP;
 215             else if ( e->message & EVT_RIGHTBMASK )
 216                 type = wxEVT_RIGHT_UP;
 217             break;
 218
 219         case EVT_MOUSEMOVE:
 220             if ( !gs_mouseCapture )
 221             {
 222                 if ( win != gs_windowUnderMouse )
 223                 {
 224                     if ( gs_windowUnderMouse )
 225                     {
 226                         wxMouseEvent event2(event);
 227                         MGL_wmCoordGlobalToLocal(gs_windowUnderMouse->GetHandle(),
 228                                                  e->where_x, e->where_y,
 229                                                  &event2.m_x, &event2.m_y);
 230
 231                         wxPoint orig(gs_windowUnderMouse->GetClientAreaOrigin());
 232                         event2.m_x -= orig.x;
 233                         event2.m_y -= orig.y;
 234
 235                         event2.SetEventObject(gs_windowUnderMouse);
 236                         event2.SetEventType(wxEVT_LEAVE_WINDOW);
 237                         gs_windowUnderMouse->GetEventHandler()->ProcessEvent(event2);
 238                     }
 239
 240                     wxMouseEvent event3(event);
 241                     event3.SetEventType(wxEVT_ENTER_WINDOW);
 242                     win->GetEventHandler()->ProcessEvent(event3);
 243
 244                     gs_windowUnderMouse = win;
 245                 }
 246             }
 247             else // gs_mouseCapture
 248             {
 249                 bool inside = (where.x >= 0 &&
 250                                where.y >= 0 &&
 251                                where.x < win->GetSize().x &&
 252                                where.y < win->GetSize().y);
 253                 if ( (inside && gs_windowUnderMouse != win) ||
 254                      (!inside && gs_windowUnderMouse == win) )
 255                 {
 256                     wxMouseEvent evt(inside ?
 257                                      wxEVT_ENTER_WINDOW : wxEVT_LEAVE_WINDOW);
 258                     evt.SetEventObject(win);
 259                     win->GetEventHandler()->ProcessEvent(evt);
 260                     gs_windowUnderMouse = inside ? win : NULL;
 261                 }
 262             }
 263
 264             type = wxEVT_MOTION;
 265             break;
 266
 267         default:
 268             break;
 269     }
 270
 271     if ( type == wxEVT_NULL )
 272     {
 273         return FALSE;
 274     }
 275     else
 276     {
 277         event.SetEventType(type);
 278         return win->GetEventHandler()->ProcessEvent(event);
 279     }
 280 }
 281
 282 static long wxScanToKeyCode(event_t *event, bool translate)
 283 {
 284     // VS: make it __WXDEBUG__-only, since we have lots of wxLogTrace calls
 285     //     here and the arguments would be stored in non-debug executable even
 286     //     though wxLogTrace would be no-op...
 287     #ifdef __WXDEBUG__
 288       #define KEY(mgl_key,wx_key) \
 289         case mgl_key: \
 290           wxLogTrace(_T("keyevents"), \
 291                      _T("key " #mgl_key ", mapped to " #wx_key)); \
 292           key = wx_key; \
 293           break;
 294     #else
 295       #define KEY(mgl_key,wx_key) \
 296         case mgl_key: key = wx_key; break;
 297     #endif
 298
 299     long key = 0;
 300
 301     if ( translate )
 302     {
 303         switch ( EVT_scanCode(event->message) )
 304         {
 305             KEY (KB_padMinus,       WXK_NUMPAD_SUBTRACT)
 306             KEY (KB_padPlus,        WXK_NUMPAD_ADD)
 307             KEY (KB_padTimes,       WXK_NUMPAD_MULTIPLY)
 308             KEY (KB_padDivide,      WXK_NUMPAD_DIVIDE)
 309             KEY (KB_padCenter,      WXK_NUMPAD_SEPARATOR) // ?
 310             KEY (KB_padLeft,        WXK_NUMPAD_LEFT)
 311             KEY (KB_padRight,       WXK_NUMPAD_RIGHT)
 312             KEY (KB_padUp,          WXK_NUMPAD_UP)
 313             KEY (KB_padDown,        WXK_NUMPAD_DOWN)
 314             KEY (KB_padInsert,      WXK_NUMPAD_INSERT)
 315             KEY (KB_padDelete,      WXK_NUMPAD_DELETE)
 316             KEY (KB_padHome,        WXK_NUMPAD_HOME)
 317             KEY (KB_padEnd,         WXK_NUMPAD_END)
 318             KEY (KB_padPageUp,      WXK_NUMPAD_PAGEUP)
 319           //KEY (KB_padPageUp,      WXK_NUMPAD_PRIOR)
 320             KEY (KB_padPageDown,    WXK_NUMPAD_PAGEDOWN)
 321           //KEY (KB_padPageDown,    WXK_NUMPAD_NEXT)
 322             KEY (KB_1,              '1')
 323             KEY (KB_2,              '2')
 324             KEY (KB_3,              '3')
 325             KEY (KB_4,              '4')
 326             KEY (KB_5,              '5')
 327             KEY (KB_6,              '6')
 328             KEY (KB_7,              '7')
 329             KEY (KB_8,              '8')
 330             KEY (KB_9,              '9')
 331             KEY (KB_0,              '0')
 332             KEY (KB_minus,          WXK_SUBTRACT)
 333             KEY (KB_equals,         WXK_ADD)
 334             KEY (KB_backSlash,      '\\')
 335             KEY (KB_Q,              'Q')
 336             KEY (KB_W,              'W')
 337             KEY (KB_E,              'E')
 338             KEY (KB_R,              'R')
 339             KEY (KB_T,              'T')
 340             KEY (KB_Y,              'Y')
 341             KEY (KB_U,              'U')
 342             KEY (KB_I,              'I')
 343             KEY (KB_O,              'O')
 344             KEY (KB_P,              'P')
 345             KEY (KB_leftSquareBrace,'[')
 346             KEY (KB_rightSquareBrace,']')
 347             KEY (KB_A,              'A')
 348             KEY (KB_S,              'S')
 349             KEY (KB_D,              'D')
 350             KEY (KB_F,              'F')
 351             KEY (KB_G,              'G')
 352             KEY (KB_H,              'H')
 353             KEY (KB_J,              'J')
 354             KEY (KB_K,              'K')
 355             KEY (KB_L,              'L')
 356             KEY (KB_semicolon,      ';')
 357             KEY (KB_apostrophe,     '\'')
 358             KEY (KB_Z,              'Z')
 359             KEY (KB_X,              'X')
 360             KEY (KB_C,              'C')
 361             KEY (KB_V,              'V')
 362             KEY (KB_B,              'B')
 363             KEY (KB_N,              'N')
 364             KEY (KB_M,              'M')
 365             KEY (KB_comma,          ',')
 366             KEY (KB_period,         '.')
 367             KEY (KB_divide,         WXK_DIVIDE)
 368             KEY (KB_space,          WXK_SPACE)
 369             KEY (KB_tilde,          '~')
 370
 371             default: break;
 372         }
 373     }
 374
 375     if ( key == 0 )
 376     {
 377         switch ( EVT_scanCode(event->message) )
 378         {
 379             KEY (KB_padEnter,       WXK_NUMPAD_ENTER)
 380             KEY (KB_F1,             WXK_F1)
 381             KEY (KB_F2,             WXK_F2)
 382             KEY (KB_F3,             WXK_F3)
 383             KEY (KB_F4,             WXK_F4)
 384             KEY (KB_F5,             WXK_F5)
 385             KEY (KB_F6,             WXK_F6)
 386             KEY (KB_F7,             WXK_F7)
 387             KEY (KB_F8,             WXK_F8)
 388             KEY (KB_F9,             WXK_F9)
 389             KEY (KB_F10,            WXK_F10)
 390             KEY (KB_F11,            WXK_F11)
 391             KEY (KB_F12,            WXK_F12)
 392             KEY (KB_left,           WXK_LEFT)
 393             KEY (KB_right,          WXK_RIGHT)
 394             KEY (KB_up,             WXK_UP)
 395             KEY (KB_down,           WXK_DOWN)
 396             KEY (KB_insert,         WXK_INSERT)
 397             KEY (KB_delete,         WXK_DELETE)
 398             KEY (KB_home,           WXK_HOME)
 399             KEY (KB_end,            WXK_END)
 400             KEY (KB_pageUp,         WXK_PAGEUP)
 401             KEY (KB_pageDown,       WXK_PAGEDOWN)
 402             KEY (KB_capsLock,       WXK_CAPITAL)
 403             KEY (KB_numLock,        WXK_NUMLOCK)
 404             KEY (KB_scrollLock,     WXK_SCROLL)
 405             KEY (KB_leftShift,      WXK_SHIFT)
 406             KEY (KB_rightShift,     WXK_SHIFT)
 407             KEY (KB_leftCtrl,       WXK_CONTROL)
 408             KEY (KB_rightCtrl,      WXK_CONTROL)
 409             KEY (KB_leftAlt,        WXK_ALT)
 410             KEY (KB_rightAlt,       WXK_ALT)
 411             KEY (KB_leftWindows,    WXK_START)
 412             KEY (KB_rightWindows,   WXK_START)
 413             KEY (KB_menu,           WXK_MENU)
 414             KEY (KB_sysReq,         WXK_SNAPSHOT)
 415             KEY (KB_esc,            WXK_ESCAPE)
 416             KEY (KB_backspace,      WXK_BACK)
 417             KEY (KB_tab,            WXK_TAB)
 418             KEY (KB_enter,          WXK_RETURN)
 419
 420             default:
 421                 key = EVT_asciiCode(event->message);
 422                 break;
 423         }
 424     }
 425
 426     #undef KEY
 427
 428     return key;
 429 }
 430
 431 static bool wxHandleSpecialKeys(wxKeyEvent& event)
 432 {
 433     // Add an easy way to capture screenshots:
 434     if ( event.m_keyCode == WXK_SNAPSHOT
 435     #ifdef __WXDEBUG__ // FIXME_MGL - remove when KB_sysReq works in MGL!
 436          || (event.m_keyCode == WXK_F1 &&
 437             event.m_shiftDown && event.m_controlDown)
 438     #endif
 439        )
 440     {
 441         wxCaptureScreenshot(event.m_altDown/*only active wnd?*/);
 442         return TRUE;
 443     }
 444
 445     return FALSE;
 446 }
 447
 448 static ibool MGLAPI wxWindowKeybHandler(window_t *wnd, event_t *e)
 449 {
 450     wxWindowMGL *win = (wxWindowMGL*)MGL_wmGetWindowUserData(wnd);
 451
 452     if ( !win->IsEnabled() ) return FALSE;
 453
 454     wxPoint where;
 455     MGL_wmCoordGlobalToLocal(win->GetHandle(),
 456                              e->where_x, e->where_y, &where.x, &where.y);
 457
 458     wxKeyEvent event;
 459     event.SetEventObject(win);
 460     event.SetTimestamp(e->when);
 461     event.m_keyCode = wxScanToKeyCode(e, TRUE);
 462     event.m_scanCode = 0; // not used by wx at all
 463     event.m_x = where.x;
 464     event.m_y = where.y;
 465     event.m_shiftDown = e->modifiers & EVT_SHIFTKEY;
 466     event.m_controlDown = e->modifiers & EVT_CTRLSTATE;
 467     event.m_altDown = e->modifiers & EVT_LEFTALT;
 468     event.m_metaDown = e->modifiers & EVT_RIGHTALT;
 469
 470     if ( e->what == EVT_KEYUP )
 471     {
 472         event.SetEventType(wxEVT_KEY_UP);
 473         return win->GetEventHandler()->ProcessEvent(event);
 474     }
 475     else
 476     {
 477         bool ret;
 478         wxKeyEvent event2;
 479
 480         event.SetEventType(wxEVT_KEY_DOWN);
 481         event2 = event;
 482
 483         ret = win->GetEventHandler()->ProcessEvent(event);
 484
 485         // wxMSW doesn't send char events with Alt pressed
 486         // Only send wxEVT_CHAR event if not processed yet. Thus, ALT-x
 487         // will only be sent if it is not in an accelerator table:
 488         event2.m_keyCode = wxScanToKeyCode(e, FALSE);
 489         if ( !ret && event2.m_keyCode != 0 )
 490         {
 491             event2.SetEventType(wxEVT_CHAR);
 492             ret = win->GetEventHandler()->ProcessEvent(event2);
 493         }
 494
 495         // Synthetize navigation key event, but do it only if the TAB key
 496         // wasn't handled yet:
 497         if ( !ret && event.m_keyCode == WXK_TAB &&
 498              win->GetParent() && win->GetParent()->HasFlag(wxTAB_TRAVERSAL) )
 499         {
 500             wxNavigationKeyEvent navEvent;
 501             navEvent.SetEventObject(win->GetParent());
 502             // Shift-TAB goes in reverse direction:
 503             navEvent.SetDirection(!event.m_shiftDown);
 504             // Ctrl-TAB changes the (parent) window, i.e. switch notebook page:
 505             navEvent.SetWindowChange(event.m_controlDown);
 506             navEvent.SetCurrentFocus(wxStaticCast(win, wxWindow));
 507             ret = win->GetParent()->GetEventHandler()->ProcessEvent(navEvent);
 508         }
 509
 510         // Finally, process special meaning keys that are usually
 511         // a responsibility of OS or window manager:
 512         if ( !ret )
 513             ret = wxHandleSpecialKeys(event);
 514
 515         return ret;
 516     }
 517 }
 518
 519 // ---------------------------------------------------------------------------
 520 // event tables
 521 // ---------------------------------------------------------------------------
 522
 523 // in wxUniv this class is abstract because it doesn't have DoPopupMenu()
 524 IMPLEMENT_ABSTRACT_CLASS(wxWindowMGL, wxWindowBase)
 525
 526 BEGIN_EVENT_TABLE(wxWindowMGL, wxWindowBase)
 527 END_EVENT_TABLE()
 528
 529 // ===========================================================================
 530 // implementation
 531 // ===========================================================================
 532
 533 // ----------------------------------------------------------------------------
 534 // constructors and such
 535 // ----------------------------------------------------------------------------
 536
 537 extern wxDisplayModeInfo wxGetDefaultDisplayMode();
 538
 539 void wxWindowMGL::Init()
 540 {
 541     // First of all, make sure window manager is up and running. If it is
 542     // not the case, initialize it in default display mode
 543     if ( !g_winMng )
 544     {
 545         if ( !wxTheApp->SetDisplayMode(wxGetDefaultDisplayMode()) )
 546             wxLogFatalError(_("Cannot initialize display."));
 547     }
 548
 549     // generic:
 550     InitBase();
 551
 552     // mgl specific:
 553     m_wnd = NULL;
 554     m_isShown = TRUE;
 555     m_isBeingDeleted = FALSE;
 556     m_isEnabled = TRUE;
 557     m_frozen = FALSE;
 558     m_paintMGLDC = NULL;
 559     m_eraseBackground = -1;
 560 }
 561
 562 // Destructor
 563 wxWindowMGL::~wxWindowMGL()
 564 {
 565     SendDestroyEvent();
 566
 567     m_isBeingDeleted = TRUE;
 568
 569     if ( gs_mouseCapture == this )
 570         ReleaseMouse();
 571
 572     if (gs_activeFrame == this)
 573     {
 574         gs_activeFrame = NULL;
 575         // activate next frame in Z-order:
 576         if ( m_wnd->prev )
 577         {
 578             wxWindowMGL *win = (wxWindowMGL*)m_wnd->prev->userData;
 579             win->SetFocus();
 580         }
 581         else if ( m_wnd->next )
 582         {
 583             wxWindowMGL *win = (wxWindowMGL*)m_wnd->next->userData;
 584             win->SetFocus();
 585         }
 586     }
 587
 588     if ( gs_focusedWindow == this )
 589         KillFocus();
 590
 591     if ( gs_windowUnderMouse == this )
 592         gs_windowUnderMouse = NULL;
 593
 594     // VS: destroy children first and _then_ detach *this from its parent.
 595     //     If we'd do it the other way around, children wouldn't be able
 596     //     find their parent frame (see above).
 597     DestroyChildren();
 598
 599     if ( m_parent )
 600         m_parent->RemoveChild(this);
 601
 602     if ( m_wnd )
 603         MGL_wmDestroyWindow(m_wnd);
 604 }
 605
 606 // real construction (Init() must have been called before!)
 607 bool wxWindowMGL::Create(wxWindow *parent,
 608                          wxWindowID id,
 609                          const wxPoint& pos,
 610                          const wxSize& size,
 611                          long style,
 612                          const wxString& name)
 613 {
 614     if ( !CreateBase(parent, id, pos, size, style, wxDefaultValidator, name) )
 615         return FALSE;
 616
 617     if ( parent )
 618         parent->AddChild(this);
 619
 620     int x, y, w, h;
 621     x = pos.x, y = pos.y;
 622     if ( x == -1 )
 623         x = 0; // FIXME_MGL, something better, see GTK+
 624     if ( y == -1 )
 625         y = 0; // FIXME_MGL, something better, see GTK+
 626     AdjustForParentClientOrigin(x, y, 0);
 627     w = WidthDefault(size.x);
 628     h = HeightDefault(size.y);
 629
 630     long mgl_style = 0;
 631     window_t *wnd_parent = parent ? parent->GetHandle() : NULL;
 632
 633     if ( !(style & wxNO_FULL_REPAINT_ON_RESIZE) )
 634     {
 635         mgl_style |= MGL_WM_FULL_REPAINT_ON_RESIZE;
 636     }
 637     if ( style & wxSTAY_ON_TOP )
 638     {
 639         mgl_style |= MGL_WM_ALWAYS_ON_TOP;
 640     }
 641     if ( style & wxPOPUP_WINDOW )
 642     {
 643         mgl_style |= MGL_WM_ALWAYS_ON_TOP;
 644         // it is created hidden as other top level windows
 645         m_isShown = FALSE;
 646         wnd_parent = NULL;
 647     }
 648
 649     window_t *wnd = MGL_wmCreateWindow(g_winMng, wnd_parent, x, y, w, h);
 650
 651     MGL_wmSetWindowFlags(wnd, mgl_style);
 652     MGL_wmShowWindow(wnd, m_isShown);
 653
 654     SetMGLwindow_t(wnd);
 655
 656     return TRUE;
 657 }
 658
 659 void wxWindowMGL::SetMGLwindow_t(struct window_t *wnd)
 660 {
 661     if ( m_wnd )
 662         MGL_wmDestroyWindow(m_wnd);
 663
 664     m_wnd = wnd;
 665     if ( !m_wnd ) return;
 666
 667     m_isShown = m_wnd->visible;
 668
 669     MGL_wmSetWindowUserData(m_wnd, (void*) this);
 670     MGL_wmSetWindowPainter(m_wnd, wxWindowPainter);
 671     MGL_wmPushWindowEventHandler(m_wnd, wxWindowMouseHandler, EVT_MOUSEEVT, 0);
 672     MGL_wmPushWindowEventHandler(m_wnd, wxWindowKeybHandler, EVT_KEYEVT, 0);
 673
 674     if ( m_cursor.Ok() )
 675         MGL_wmSetWindowCursor(m_wnd, *m_cursor.GetMGLCursor());
 676     else
 677         MGL_wmSetWindowCursor(m_wnd, *wxSTANDARD_CURSOR->GetMGLCursor());
 678 }
 679
 680 // ---------------------------------------------------------------------------
 681 // basic operations
 682 // ---------------------------------------------------------------------------
 683
 684 void wxWindowMGL::SetFocus()
 685 {
 686     if ( gs_focusedWindow == this ) return;
 687
 688     wxWindowMGL *oldFocusedWindow = gs_focusedWindow;
 689
 690     if ( gs_focusedWindow )
 691     {
 692         gs_toBeFocusedWindow = (wxWindow*)this;
 693         gs_focusedWindow->KillFocus();
 694         gs_toBeFocusedWindow = NULL;
 695     }
 696
 697     gs_focusedWindow = this;
 698
 699     MGL_wmCaptureEvents(GetHandle(), EVT_KEYEVT, wxMGL_CAPTURE_KEYB);
 700
 701     wxWindowMGL *active = wxGetTopLevelParent(this);
 702     if ( !(m_windowStyle & wxPOPUP_WINDOW) && active != gs_activeFrame )
 703     {
 704         if ( gs_activeFrame )
 705         {
 706             wxActivateEvent event(wxEVT_ACTIVATE, FALSE, gs_activeFrame->GetId());
 707             event.SetEventObject(gs_activeFrame);
 708             gs_activeFrame->GetEventHandler()->ProcessEvent(event);
 709         }
 710
 711         gs_activeFrame = active;
 712         wxActivateEvent event(wxEVT_ACTIVATE, TRUE, gs_activeFrame->GetId());
 713         event.SetEventObject(gs_activeFrame);
 714         gs_activeFrame->GetEventHandler()->ProcessEvent(event);
 715     }
 716
 717     wxFocusEvent event(wxEVT_SET_FOCUS, GetId());
 718     event.SetEventObject(this);
 719     event.SetWindow((wxWindow*)oldFocusedWindow);
 720     GetEventHandler()->ProcessEvent(event);
 721
 722 #if wxUSE_CARET
 723     // caret needs to be informed about focus change
 724     wxCaret *caret = GetCaret();
 725     if ( caret )
 726         caret->OnSetFocus();
 727 #endif // wxUSE_CARET
 728 }
 729
 730 void wxWindowMGL::KillFocus()
 731 {
 732     if ( gs_focusedWindow != this ) return;
 733     gs_focusedWindow = NULL;
 734
 735     if ( m_isBeingDeleted ) return;
 736
 737     MGL_wmUncaptureEvents(GetHandle(), wxMGL_CAPTURE_KEYB);
 738
 739 #if wxUSE_CARET
 740     // caret needs to be informed about focus change
 741     wxCaret *caret = GetCaret();
 742     if ( caret )
 743         caret->OnKillFocus();
 744 #endif // wxUSE_CARET
 745
 746     wxFocusEvent event(wxEVT_KILL_FOCUS, GetId());
 747     event.SetEventObject(this);
 748     event.SetWindow(gs_toBeFocusedWindow);
 749     GetEventHandler()->ProcessEvent(event);
 750 }
 751
 752 // ----------------------------------------------------------------------------
 753 // this wxWindowBase function is implemented here (in platform-specific file)
 754 // because it is static and so couldn't be made virtual
 755 // ----------------------------------------------------------------------------
 756 wxWindow *wxWindowBase::FindFocus()
 757 {
 758     return (wxWindow*)gs_focusedWindow;
 759 }
 760
 761 bool wxWindowMGL::Show(bool show)
 762 {
 763     if ( !wxWindowBase::Show(show) )
 764         return FALSE;
 765
 766     MGL_wmShowWindow(m_wnd, show);
 767
 768     if (!show && gs_activeFrame == this)
 769     {
 770         // activate next frame in Z-order:
 771         if ( m_wnd->prev )
 772         {
 773             wxWindowMGL *win = (wxWindowMGL*)m_wnd->prev->userData;
 774             win->SetFocus();
 775         }
 776         else if ( m_wnd->next )
 777         {
 778             wxWindowMGL *win = (wxWindowMGL*)m_wnd->next->userData;
 779             win->SetFocus();
 780         }
 781         else
 782         {
 783             gs_activeFrame = NULL;
 784         }
 785     }
 786
 787     return TRUE;
 788 }
 789
 790 // Raise the window to the top of the Z order
 791 void wxWindowMGL::Raise()
 792 {
 793     MGL_wmRaiseWindow(m_wnd);
 794 }
 795
 796 // Lower the window to the bottom of the Z order
 797 void wxWindowMGL::Lower()
 798 {
 799     MGL_wmLowerWindow(m_wnd);
 800 }
 801
 802 void wxWindowMGL::DoCaptureMouse()
 803 {
 804     if ( gs_mouseCapture )
 805         MGL_wmUncaptureEvents(gs_mouseCapture->m_wnd, wxMGL_CAPTURE_MOUSE);
 806
 807     gs_mouseCapture = this;
 808     MGL_wmCaptureEvents(m_wnd, EVT_MOUSEEVT, wxMGL_CAPTURE_MOUSE);
 809 }
 810
 811 void wxWindowMGL::DoReleaseMouse()
 812 {
 813     wxASSERT_MSG( gs_mouseCapture == this, wxT("attempt to release mouse, but this window hasn't captured it") );
 814
 815     MGL_wmUncaptureEvents(m_wnd, wxMGL_CAPTURE_MOUSE);
 816     gs_mouseCapture = NULL;
 817 }
 818
 819 /* static */ wxWindow *wxWindowBase::GetCapture()
 820 {
 821     return (wxWindow*)gs_mouseCapture;
 822 }
 823
 824 bool wxWindowMGL::SetCursor(const wxCursor& cursor)
 825 {
 826     if ( !wxWindowBase::SetCursor(cursor) )
 827     {
 828         // no change
 829         return FALSE;
 830     }
 831
 832     if ( m_cursor.Ok() )
 833         MGL_wmSetWindowCursor(m_wnd, *m_cursor.GetMGLCursor());
 834     else
 835         MGL_wmSetWindowCursor(m_wnd, *wxSTANDARD_CURSOR->GetMGLCursor());
 836
 837     return TRUE;
 838 }
 839
 840 void wxWindowMGL::WarpPointer(int x, int y)
 841 {
 842     int w, h;
 843     wxDisplaySize(&w, &h);
 844
 845     ClientToScreen(&x, &y);
 846     if ( x < 0 )
 847         x = 0;
 848     if ( y < 0 )
 849         y = 0;
 850     if ( x >= w )
 851         x = w-1;
 852     if ( y >= h )
 853         y = h-1;
 854
 855     EVT_setMousePos(x, y);
 856 }
 857
 858 #if WXWIN_COMPATIBILITY
 859 // If nothing defined for this, try the parent.
 860 // E.g. we may be a button loaded from a resource, with no callback function
 861 // defined.
 862 void wxWindowMGL::OnCommand(wxWindow& win, wxCommandEvent& event)
 863 {
 864     if ( GetEventHandler()->ProcessEvent(event)  )
 865         return;
 866     if ( m_parent )
 867         m_parent->GetEventHandler()->OnCommand(win, event);
 868 }
 869 #endif // WXWIN_COMPATIBILITY_2
 870
 871 #if WXWIN_COMPATIBILITY
 872 wxObject* wxWindowMGL::GetChild(int number) const
 873 {
 874     // Return a pointer to the Nth object in the Panel
 875     wxNode *node = GetChildren().First();
 876     int n = number;
 877     while (node && n--)
 878         node = node->Next();
 879     if ( node )
 880     {
 881         wxObject *obj = (wxObject *)node->Data();
 882         return(obj);
 883     }
 884     else
 885         return NULL;
 886 }
 887 #endif // WXWIN_COMPATIBILITY
 888
 889 // Set this window to be the child of 'parent'.
 890 bool wxWindowMGL::Reparent(wxWindowBase *parent)
 891 {
 892     if ( !wxWindowBase::Reparent(parent) )
 893         return FALSE;
 894
 895     MGL_wmReparentWindow(m_wnd, parent->GetHandle());
 896
 897     return TRUE;
 898 }
 899
 900
 901 // ---------------------------------------------------------------------------
 902 // drag and drop
 903 // ---------------------------------------------------------------------------
 904
 905 #if wxUSE_DRAG_AND_DROP
 906
 907 void wxWindowMGL::SetDropTarget(wxDropTarget *pDropTarget)
 908 {
 909     if ( m_dropTarget != 0 ) {
 910         m_dropTarget->Revoke(m_hWnd);
 911         delete m_dropTarget;
 912     }
 913
 914     m_dropTarget = pDropTarget;
 915     if ( m_dropTarget != 0 )
 916         m_dropTarget->Register(m_hWnd);
 917 }
 918 // FIXME_MGL
 919 #endif // wxUSE_DRAG_AND_DROP
 920
 921 // old style file-manager drag&drop support: we retain the old-style
 922 // DragAcceptFiles in parallel with SetDropTarget.
 923 void wxWindowMGL::DragAcceptFiles(bool accept)
 924 {
 925 #if 0 // FIXME_MGL
 926     HWND hWnd = GetHwnd();
 927     if ( hWnd )
 928         ::DragAcceptFiles(hWnd, (BOOL)accept);
 929 #endif
 930 }
 931
 932 // ---------------------------------------------------------------------------
 933 // moving and resizing
 934 // ---------------------------------------------------------------------------
 935
 936 // Get total size
 937 void wxWindowMGL::DoGetSize(int *x, int *y) const
 938 {
 939     wxASSERT_MSG( m_wnd, wxT("invalid window") );
 940
 941     if (x) *x = m_wnd->width;
 942     if (y) *y = m_wnd->height;
 943 }
 944
 945 void wxWindowMGL::DoGetPosition(int *x, int *y) const
 946 {
 947     wxASSERT_MSG( m_wnd, wxT("invalid window") );
 948
 949     int pX = 0, pY = 0;
 950     AdjustForParentClientOrigin(pX, pY, 0);
 951
 952     if (x) *x = m_wnd->x - pX;
 953     if (y) *y = m_wnd->y - pY;
 954 }
 955
 956 void wxWindowMGL::DoScreenToClient(int *x, int *y) const
 957 {
 958     int ax, ay;
 959     MGL_wmCoordGlobalToLocal(m_wnd, 0, 0, &ax, &ay);
 960     if (x)
 961         (*x) += ax;
 962     if (y)
 963         (*y) += ay;
 964 }
 965
 966 void wxWindowMGL::DoClientToScreen(int *x, int *y) const
 967 {
 968     int ax, ay;
 969     MGL_wmCoordLocalToGlobal(m_wnd, 0, 0, &ax, &ay);
 970     if (x)
 971         (*x) += ax;
 972     if (y)
 973         (*y) += ay;
 974 }
 975
 976 // Get size *available for subwindows* i.e. excluding menu bar etc.
 977 void wxWindowMGL::DoGetClientSize(int *x, int *y) const
 978 {
 979     DoGetSize(x, y);
 980 }
 981
 982 void wxWindowMGL::DoMoveWindow(int x, int y, int width, int height)
 983 {
 984     MGL_wmSetWindowPosition(GetHandle(), x, y, width, height);
 985 }
 986
 987 // set the size of the window: if the dimensions are positive, just use them,
 988 // but if any of them is equal to -1, it means that we must find the value for
 989 // it ourselves (unless sizeFlags contains wxSIZE_ALLOW_MINUS_ONE flag, in
 990 // which case -1 is a valid value for x and y)
 991 //
 992 // If sizeFlags contains wxSIZE_AUTO_WIDTH/HEIGHT flags (default), we calculate
 993 // the width/height to best suit our contents, otherwise we reuse the current
 994 // width/height
 995 void wxWindowMGL::DoSetSize(int x, int y, int width, int height, int sizeFlags)
 996 {
 997     // get the current size and position...
 998     int currentX, currentY;
 999     GetPosition(&currentX, &currentY);
1000     int currentW,currentH;
1001     GetSize(&currentW, &currentH);
1002
1003     // ... and don't do anything (avoiding flicker) if it's already ok
1004     if ( x == currentX && y == currentY &&
1005          width == currentW && height == currentH )
1006     {
1007         return;
1008     }
1009
1010     if ( x == -1 && !(sizeFlags & wxSIZE_ALLOW_MINUS_ONE) )
1011         x = currentX;
1012     if ( y == -1 && !(sizeFlags & wxSIZE_ALLOW_MINUS_ONE) )
1013         y = currentY;
1014
1015     AdjustForParentClientOrigin(x, y, sizeFlags);
1016
1017     wxSize size(-1, -1);
1018     if ( width == -1 )
1019     {
1020         if ( sizeFlags & wxSIZE_AUTO_WIDTH )
1021         {
1022             size = DoGetBestSize();
1023             width = size.x;
1024         }
1025         else
1026         {
1027             // just take the current one
1028             width = currentW;
1029         }
1030     }
1031
1032     if ( height == -1 )
1033     {
1034         if ( sizeFlags & wxSIZE_AUTO_HEIGHT )
1035         {
1036             if ( size.x == -1 )
1037             {
1038                 size = DoGetBestSize();
1039             }
1040             //else: already called DoGetBestSize() above
1041
1042             height = size.y;
1043         }
1044         else
1045         {
1046             // just take the current one
1047             height = currentH;
1048         }
1049     }
1050
1051     int maxWidth = GetMaxWidth(),
1052         minWidth = GetMinWidth(),
1053         maxHeight = GetMaxHeight(),
1054         minHeight = GetMinHeight();
1055
1056     if ( minWidth != -1 && width < minWidth ) width = minWidth;
1057     if ( maxWidth != -1 && width > maxWidth ) width = maxWidth;
1058     if ( minHeight != -1 && height < minHeight ) height = minHeight;
1059     if ( maxHeight != -1 && height > maxHeight ) height = maxHeight;
1060
1061     if ( m_wnd->x != x || m_wnd->y != y ||
1062          (int)m_wnd->width != width || (int)m_wnd->height != height )
1063     {
1064         DoMoveWindow(x, y, width, height);
1065
1066         wxSizeEvent event(wxSize(width, height), GetId());
1067         event.SetEventObject(this);
1068         GetEventHandler()->ProcessEvent(event);
1069     }
1070 }
1071
1072 void wxWindowMGL::DoSetClientSize(int width, int height)
1073 {
1074     SetSize(width, height);
1075 }
1076
1077 // ---------------------------------------------------------------------------
1078 // text metrics
1079 // ---------------------------------------------------------------------------
1080
1081 int wxWindowMGL::GetCharHeight() const
1082 {
1083     wxScreenDC dc;
1084     dc.SetFont(m_font);
1085     return dc.GetCharHeight();
1086 }
1087
1088 int wxWindowMGL::GetCharWidth() const
1089 {
1090     wxScreenDC dc;
1091     dc.SetFont(m_font);
1092     return dc.GetCharWidth();
1093 }
1094
1095 void wxWindowMGL::GetTextExtent(const wxString& string,
1096                              int *x, int *y,
1097                              int *descent, int *externalLeading,
1098                              const wxFont *theFont) const
1099 {
1100     wxScreenDC dc;
1101     if (!theFont)
1102         theFont = &m_font;
1103     dc.GetTextExtent(string, x, y, descent, externalLeading, (wxFont*)theFont);
1104 }
1105
1106 #if wxUSE_CARET && WXWIN_COMPATIBILITY
1107 // ---------------------------------------------------------------------------
1108 // Caret manipulation
1109 // ---------------------------------------------------------------------------
1110
1111 void wxWindowMGL::CreateCaret(int w, int h)
1112 {
1113     SetCaret(new wxCaret(this, w, h));
1114 }
1115
1116 void wxWindowMGL::CreateCaret(const wxBitmap *WXUNUSED(bitmap))
1117 {
1118     wxFAIL_MSG("not implemented");
1119 }
1120
1121 void wxWindowMGL::ShowCaret(bool show)
1122 {
1123     wxCHECK_RET( m_caret, "no caret to show" );
1124
1125     m_caret->Show(show);
1126 }
1127
1128 void wxWindowMGL::DestroyCaret()
1129 {
1130     SetCaret(NULL);
1131 }
1132
1133 void wxWindowMGL::SetCaretPos(int x, int y)
1134 {
1135     wxCHECK_RET( m_caret, "no caret to move" );
1136
1137     m_caret->Move(x, y);
1138 }
1139
1140 void wxWindowMGL::GetCaretPos(int *x, int *y) const
1141 {
1142     wxCHECK_RET( m_caret, "no caret to get position of" );
1143
1144     m_caret->GetPosition(x, y);
1145 }
1146 #endif // wxUSE_CARET
1147
1148
1149 // ---------------------------------------------------------------------------
1150 // painting
1151 // ---------------------------------------------------------------------------
1152
1153 void wxWindowMGL::Clear()
1154 {
1155     wxClientDC dc((wxWindow *)this);
1156     wxBrush brush(GetBackgroundColour(), wxSOLID);
1157     dc.SetBackground(brush);
1158     dc.Clear();
1159 }
1160
1161 #include "wx/menu.h"
1162 void wxWindowMGL::Refresh(bool eraseBack, const wxRect *rect)
1163 {
1164     if ( m_eraseBackground == -1 )
1165         m_eraseBackground = eraseBack;
1166     else
1167         m_eraseBackground |= eraseBack;
1168
1169     if ( rect )
1170     {
1171         rect_t r;
1172         r.left = rect->GetLeft(), r.right = rect->GetRight();
1173         r.top = rect->GetTop(), r.bottom = rect->GetBottom();
1174         MGL_wmInvalidateWindowRect(GetHandle(), &r);
1175     }
1176     else
1177         MGL_wmInvalidateWindow(GetHandle());
1178 }
1179
1180 void wxWindowMGL::Update()
1181 {
1182     if ( !m_frozen )
1183         MGL_wmUpdateDC(g_winMng);
1184 }
1185
1186 void wxWindowMGL::Freeze()
1187 {
1188     m_frozen = TRUE;
1189     m_refreshAfterThaw = FALSE;
1190 }
1191
1192 void wxWindowMGL::Thaw()
1193 {
1194     m_frozen = FALSE;
1195     if ( m_refreshAfterThaw )
1196         Refresh();
1197 }
1198
1199 void wxWindowMGL::HandlePaint(MGLDevCtx *dc)
1200 {
1201     if ( m_frozen )
1202     {
1203         // Don't paint anything if the window is frozen.
1204         m_refreshAfterThaw = TRUE;
1205         return;
1206     }
1207
1208 #ifdef __WXDEBUG__
1209     // FIXME_MGL -- debugging stuff, to be removed!
1210     static int debugPaintEvents = -1;
1211     if ( debugPaintEvents == -1 )
1212         debugPaintEvents = wxGetEnv(wxT("WXMGL_DEBUG_PAINT_EVENTS"), NULL);
1213     if ( debugPaintEvents )
1214     {
1215         dc->setColorRGB(255,0,255);
1216         dc->fillRect(-1000,-1000,2000,2000);
1217         wxUsleep(50);
1218     }
1219 #endif
1220
1221     MGLRegion clip;
1222     dc->getClipRegion(clip);
1223     m_updateRegion = wxRegion(clip);
1224     m_paintMGLDC = dc;
1225
1226 #if wxUSE_CARET
1227     // must hide caret temporarily, otherwise we'd get rendering artifacts
1228     wxCaret *caret = GetCaret();
1229     if ( caret )
1230         caret->Hide();
1231 #endif // wxUSE_CARET
1232
1233     if ( m_eraseBackground != 0 )
1234     {
1235         wxWindowDC dc((wxWindow*)this);
1236         wxEraseEvent eventEr(m_windowId, &dc);
1237         eventEr.SetEventObject(this);
1238         GetEventHandler()->ProcessEvent(eventEr);
1239     }
1240     m_eraseBackground = -1;
1241
1242     wxNcPaintEvent eventNc(GetId());
1243     eventNc.SetEventObject(this);
1244     GetEventHandler()->ProcessEvent(eventNc);
1245
1246     wxPaintEvent eventPt(GetId());
1247     eventPt.SetEventObject(this);
1248     GetEventHandler()->ProcessEvent(eventPt);
1249
1250 #if wxUSE_CARET
1251     if ( caret )
1252         caret->Show();
1253 #endif // wxUSE_CARET
1254
1255     m_paintMGLDC = NULL;
1256     m_updateRegion.Clear();
1257 }
1258
1259
1260 // Find the wxWindow at the current mouse position, returning the mouse
1261 // position.
1262 wxWindow* wxFindWindowAtPointer(wxPoint& pt)
1263 {
1264     return wxFindWindowAtPoint(pt = wxGetMousePosition());
1265 }
1266
1267 wxWindow* wxFindWindowAtPoint(const wxPoint& pt)
1268 {
1269     window_t *wnd = MGL_wmGetWindowAtPosition(g_winMng, pt.x, pt.y);
1270     return (wxWindow*)wnd->userData;
1271 }
1272
1273
1274 // ---------------------------------------------------------------------------
1275 // idle events processing
1276 // ---------------------------------------------------------------------------
1277
1278 void wxWindowMGL::OnInternalIdle()
1279 {
1280     if (wxUpdateUIEvent::CanUpdate(this))
1281         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
1282 }