src/msw/toplevel.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/toplevel.cpp
   3 // Purpose:     implements wxTopLevelWindow for MSW
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     24.09.01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2001 SciTech Software, Inc. (www.scitechsoft.com)
   9 // License:     wxWindows license
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "toplevel.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/app.h"
  33     #include "wx/toplevel.h"
  34     #include "wx/string.h"
  35     #include "wx/log.h"
  36     #include "wx/intl.h"
  37     #include "wx/frame.h"
  38 #endif //WX_PRECOMP
  39
  40 #include "wx/msw/private.h"
  41
  42 // ----------------------------------------------------------------------------
  43 // stubs for missing functions under MicroWindows
  44 // ----------------------------------------------------------------------------
  45
  46 #ifdef __WXMICROWIN__
  47
  48 static inline bool IsIconic(HWND WXUNUSED(hwnd)) { return FALSE; }
  49 static inline bool IsZoomed(HWND WXUNUSED(hwnd)) { return FALSE; }
  50
  51 #endif // __WXMICROWIN__
  52
  53 // ----------------------------------------------------------------------------
  54 // globals
  55 // ----------------------------------------------------------------------------
  56
  57 // list of all frames and modeless dialogs
  58 wxWindowList wxModelessWindows;
  59
  60 // the name of the default wxWindows class
  61 extern const wxChar *wxCanvasClassName;
  62
  63 // ============================================================================
  64 // wxTopLevelWindowMSW implementation
  65 // ============================================================================
  66
  67 // Dialog window proc
  68 LONG APIENTRY _EXPORT
  69 wxDlgProc(HWND WXUNUSED(hWnd), UINT message, WPARAM WXUNUSED(wParam), LPARAM WXUNUSED(lParam))
  70 {
  71     if ( message == WM_INITDIALOG )
  72     {
  73         // for this message, returning TRUE tells system to set focus to the
  74         // first control in the dialog box
  75         return TRUE;
  76     }
  77     else
  78     {
  79         // for all the other ones, FALSE means that we didn't process the
  80         // message
  81         return FALSE;
  82     }
  83 }
  84
  85 // ----------------------------------------------------------------------------
  86 // wxTopLevelWindowMSW creation
  87 // ----------------------------------------------------------------------------
  88
  89 void wxTopLevelWindowMSW::Init()
  90 {
  91     m_iconized =
  92     m_maximizeOnShow = FALSE;
  93
  94     // unlike (almost?) all other windows, frames are created hidden
  95     m_isShown = FALSE;
  96
  97     // Data to save/restore when calling ShowFullScreen
  98     m_fsStyle = 0;
  99     m_fsOldWindowStyle = 0;
 100     m_fsIsMaximized = FALSE;
 101     m_fsIsShowing = FALSE;
 102 }
 103
 104 long wxTopLevelWindowMSW::MSWGetCreateWindowFlags(long *exflags) const
 105 {
 106     long style = GetWindowStyle();
 107     long msflags = 0;
 108
 109     // first select the kind of window being created
 110     if ( style & wxCAPTION )
 111     {
 112         if ( style & wxFRAME_TOOL_WINDOW )
 113             msflags |= WS_POPUPWINDOW;
 114         else
 115             msflags |= WS_OVERLAPPED;
 116     }
 117     else
 118     {
 119         msflags |= WS_POPUP;
 120     }
 121
 122     // next translate the individual flags
 123     if ( style & wxMINIMIZE_BOX )
 124         msflags |= WS_MINIMIZEBOX;
 125     if ( style & wxMAXIMIZE_BOX )
 126         msflags |= WS_MAXIMIZEBOX;
 127     if ( style & wxTHICK_FRAME )
 128         msflags |= WS_THICKFRAME;
 129     if ( style & wxSYSTEM_MENU )
 130         msflags |= WS_SYSMENU;
 131     if ( style & wxMINIMIZE )
 132         msflags |= WS_MINIMIZE;
 133     if ( style & wxMAXIMIZE )
 134         msflags |= WS_MAXIMIZE;
 135     if ( style & wxCAPTION )
 136         msflags |= WS_CAPTION;
 137     if ( style & wxCLIP_CHILDREN )
 138         msflags |= WS_CLIPCHILDREN;
 139
 140     // Keep this here because it saves recoding this function in wxTinyFrame
 141 #if wxUSE_ITSY_BITSY && !defined(__WIN32__)
 142     if ( style & wxTINY_CAPTION_VERT )
 143         msflags |= IBS_VERTCAPTION;
 144     if ( style & wxTINY_CAPTION_HORIZ )
 145         msflags |= IBS_HORZCAPTION;
 146 #else
 147     if ( style & (wxTINY_CAPTION_VERT | wxTINY_CAPTION_HORIZ) )
 148         msflags |= WS_CAPTION;
 149 #endif
 150
 151     if ( exflags )
 152     {
 153         *exflags = MakeExtendedStyle(style);
 154
 155         // make all frames appear in the win9x shell taskbar unless
 156         // wxFRAME_TOOL_WINDOW or wxFRAME_NO_TASKBAR is given - without giving
 157         // them WS_EX_APPWINDOW style, the child (i.e. owned) frames wouldn't
 158         // appear in it
 159 #if !defined(__WIN16__) && !defined(__SC__)
 160         if ( (style & wxFRAME_TOOL_WINDOW) || (style & wxFRAME_NO_TASKBAR) )
 161             *exflags |= WS_EX_TOOLWINDOW;
 162         else if ( !(style & wxFRAME_NO_TASKBAR) )
 163             *exflags |= WS_EX_APPWINDOW;
 164 #endif
 165
 166         if ( style & wxSTAY_ON_TOP )
 167             *exflags |= WS_EX_TOPMOST;
 168
 169 #ifdef __WIN32__
 170       if ( m_exStyle & wxFRAME_EX_CONTEXTHELP )
 171         *exflags |= WS_EX_CONTEXTHELP;
 172 #endif // __WIN32__
 173     }
 174
 175     return msflags;
 176 }
 177
 178 bool wxTopLevelWindowMSW::CreateDialog(const wxChar *dlgTemplate,
 179                                        const wxString& title,
 180                                        const wxPoint& pos,
 181                                        const wxSize& size)
 182 {
 183 #ifdef __WXMICROWIN__
 184     // no dialogs support under MicroWin yet
 185     return CreateFrame(title, pos, size);
 186 #else // !__WXMICROWIN__
 187     wxWindow *parent = GetParent();
 188
 189     // for the dialogs without wxDIALOG_NO_PARENT style, use the top level
 190     // app window as parent - this avoids creating modal dialogs without
 191     // parent
 192     if ( !parent && !(GetWindowStyleFlag() & wxDIALOG_NO_PARENT) )
 193     {
 194         parent = wxTheApp->GetTopWindow();
 195     }
 196
 197     m_hWnd = (WXHWND)::CreateDialog(wxGetInstance(),
 198                                     dlgTemplate,
 199                                     parent ? GetHwndOf(parent) : NULL,
 200                                     (DLGPROC)wxDlgProc);
 201
 202     if ( !m_hWnd )
 203     {
 204         wxFAIL_MSG(_("Did you forget to include wx/msw/wx.rc in your resources?"));
 205
 206         wxLogSysError(_("Can't create dialog using template '%s'"), dlgTemplate);
 207
 208         return FALSE;
 209     }
 210
 211     long exflags;
 212     (void)MSWGetCreateWindowFlags(&exflags);
 213
 214     if ( exflags )
 215     {
 216         ::SetWindowLong(GetHwnd(), GWL_EXSTYLE, exflags);
 217         ::SetWindowPos(GetHwnd(), NULL, 0, 0, 0, 0,
 218                        SWP_NOSIZE |
 219                        SWP_NOMOVE |
 220                        SWP_NOZORDER |
 221                        SWP_NOACTIVATE);
 222     }
 223
 224 #if defined(__WIN95__)
 225     // For some reason, the system menu is activated when we use the
 226     // WS_EX_CONTEXTHELP style, so let's set a reasonable icon
 227     if ( exflags & WS_EX_CONTEXTHELP )
 228     {
 229         wxFrame *winTop = wxDynamicCast(wxTheApp->GetTopWindow(), wxFrame);
 230         if ( winTop )
 231         {
 232             wxIcon icon = winTop->GetIcon();
 233             if ( icon.Ok() )
 234             {
 235                 ::SendMessage(GetHwnd(), WM_SETICON,
 236                               (WPARAM)TRUE,
 237                               (LPARAM)GetHiconOf(icon));
 238             }
 239         }
 240     }
 241 #endif // __WIN95__
 242
 243     // move the dialog to its initial position without forcing repainting
 244     int x, y, w, h;
 245     if ( MSWGetCreateWindowCoords(pos, size, x, y, w, h) )
 246     {
 247         if ( !::MoveWindow(GetHwnd(), x, y, w, h, FALSE) )
 248         {
 249             wxLogLastError(wxT("MoveWindow"));
 250         }
 251     }
 252     //else: leave it at default position
 253
 254     if ( !title.empty() )
 255     {
 256         ::SetWindowText(GetHwnd(), title);
 257     }
 258
 259     SubclassWin(m_hWnd);
 260
 261     return TRUE;
 262 #endif // __WXMICROWIN__/!__WXMICROWIN__
 263 }
 264
 265 bool wxTopLevelWindowMSW::CreateFrame(const wxString& title,
 266                                       const wxPoint& pos,
 267                                       const wxSize& size)
 268 {
 269     long exflags;
 270     long flags = MSWGetCreateWindowFlags(&exflags);
 271
 272     return MSWCreate(wxCanvasClassName, title, pos, size, flags, exflags);
 273 }
 274
 275 bool wxTopLevelWindowMSW::Create(wxWindow *parent,
 276                                  wxWindowID id,
 277                                  const wxString& title,
 278                                  const wxPoint& pos,
 279                                  const wxSize& size,
 280                                  long style,
 281                                  const wxString& name)
 282 {
 283     // init our fields
 284     Init();
 285
 286     m_windowStyle = style;
 287
 288     SetName(name);
 289
 290     m_windowId = id == -1 ? NewControlId() : id;
 291
 292     wxTopLevelWindows.Append(this);
 293
 294     if ( parent )
 295         parent->AddChild(this);
 296
 297     if ( GetExtraStyle() & wxTOPLEVEL_EX_DIALOG )
 298     {
 299         // TODO: it would be better to construct the dialog template in memory
 300         //       during run-time than to rely on the limited number of
 301         //       templates in wx.rc because:
 302         //          a) you wouldn't have to include wx.rc in all wxWin programs
 303         //             (and the number of complaints about it would dtop)
 304         //          b) we'd be able to provide more templates simply, i.e.
 305         //             we could generate the templates for all style
 306         //             combinations
 307
 308         // we have different dialog templates to allows creation of dialogs
 309         // with & without captions under MSWindows, resizeable or not (but a
 310         // resizeable dialog always has caption - otherwise it would look too
 311         // strange)
 312         const wxChar *dlgTemplate;
 313         if ( style & wxRESIZE_BORDER )
 314             dlgTemplate = wxT("wxResizeableDialog");
 315         else if ( style & wxCAPTION )
 316             dlgTemplate = wxT("wxCaptionDialog");
 317         else
 318             dlgTemplate = wxT("wxNoCaptionDialog");
 319
 320         return CreateDialog(dlgTemplate, title, pos, size);
 321     }
 322     else // !dialog
 323     {
 324         return CreateFrame(title, pos, size);
 325     }
 326 }
 327
 328 wxTopLevelWindowMSW::~wxTopLevelWindowMSW()
 329 {
 330     wxTopLevelWindows.DeleteObject(this);
 331
 332     if ( wxModelessWindows.Find(this) )
 333         wxModelessWindows.DeleteObject(this);
 334
 335     // If this is the last top-level window, exit.
 336     if ( wxTheApp && (wxTopLevelWindows.Number() == 0) )
 337     {
 338         wxTheApp->SetTopWindow(NULL);
 339
 340         if ( wxTheApp->GetExitOnFrameDelete() )
 341         {
 342             ::PostQuitMessage(0);
 343         }
 344     }
 345 }
 346
 347 // ----------------------------------------------------------------------------
 348 // wxTopLevelWindowMSW geometry
 349 // ----------------------------------------------------------------------------
 350
 351 void wxTopLevelWindowMSW::DoSetClientSize(int width, int height)
 352 {
 353     HWND hWnd = GetHwnd();
 354
 355     RECT rectClient;
 356     ::GetClientRect(hWnd, &rectClient);
 357
 358     RECT rectTotal;
 359     ::GetWindowRect(hWnd, &rectTotal);
 360
 361     // Find the difference between the entire window (title bar and all)
 362     // and the client area; add this to the new client size to move the
 363     // window
 364     width += rectTotal.right - rectTotal.left - rectClient.right;
 365     height += rectTotal.bottom - rectTotal.top - rectClient.bottom;
 366
 367     // note that calling GetClientAreaOrigin() takes the toolbar into account
 368     wxPoint pt = GetClientAreaOrigin();
 369     width += pt.x;
 370     height += pt.y;
 371
 372     if ( !::MoveWindow(hWnd, rectTotal.left, rectTotal.top,
 373                        width, height, TRUE /* redraw */) )
 374     {
 375         wxLogLastError(_T("MoveWindow"));
 376     }
 377
 378     wxSizeEvent event(wxSize(width, height), m_windowId);
 379     event.SetEventObject(this);
 380     (void)GetEventHandler()->ProcessEvent(event);
 381 }
 382
 383 // ----------------------------------------------------------------------------
 384 // wxTopLevelWindowMSW showing
 385 // ----------------------------------------------------------------------------
 386
 387 void wxTopLevelWindowMSW::DoShowWindow(int nShowCmd)
 388 {
 389     ::ShowWindow(GetHwnd(), nShowCmd);
 390
 391     m_iconized = nShowCmd == SW_MINIMIZE;
 392 }
 393
 394 bool wxTopLevelWindowMSW::Show(bool show)
 395 {
 396     // don't use wxWindow version as we want to call DoShowWindow() ourselves
 397     if ( !wxWindowBase::Show(show) )
 398         return FALSE;
 399
 400     int nShowCmd;
 401     if ( show )
 402     {
 403         if ( m_maximizeOnShow )
 404         {
 405             // show and maximize
 406             nShowCmd = SW_MAXIMIZE;
 407
 408             m_maximizeOnShow = FALSE;
 409         }
 410         else // just show
 411         {
 412             nShowCmd = SW_SHOW;
 413         }
 414     }
 415     else // hide
 416     {
 417         nShowCmd = SW_HIDE;
 418     }
 419
 420     DoShowWindow(nShowCmd);
 421
 422     if ( show )
 423     {
 424         ::BringWindowToTop(GetHwnd());
 425
 426         wxActivateEvent event(wxEVT_ACTIVATE, TRUE, m_windowId);
 427         event.SetEventObject( this );
 428         GetEventHandler()->ProcessEvent(event);
 429     }
 430     else // hide
 431     {
 432         // Try to highlight the correct window (the parent)
 433         if ( GetParent() )
 434         {
 435             HWND hWndParent = GetHwndOf(GetParent());
 436             if (hWndParent)
 437                 ::BringWindowToTop(hWndParent);
 438         }
 439     }
 440
 441     return TRUE;
 442 }
 443
 444 // ----------------------------------------------------------------------------
 445 // wxTopLevelWindowMSW maximize/minimize
 446 // ----------------------------------------------------------------------------
 447
 448 void wxTopLevelWindowMSW::Maximize(bool maximize)
 449 {
 450     if ( IsShown() )
 451     {
 452         // just maximize it directly
 453         DoShowWindow(maximize ? SW_MAXIMIZE : SW_RESTORE);
 454     }
 455     else // hidden
 456     {
 457         // we can't maximize the hidden frame because it shows it as well, so
 458         // just remember that we should do it later in this case
 459         m_maximizeOnShow = TRUE;
 460     }
 461 }
 462
 463 bool wxTopLevelWindowMSW::IsMaximized() const
 464 {
 465     return ::IsZoomed(GetHwnd()) != 0;
 466 }
 467
 468 void wxTopLevelWindowMSW::Iconize(bool iconize)
 469 {
 470     DoShowWindow(iconize ? SW_MINIMIZE : SW_RESTORE);
 471 }
 472
 473 bool wxTopLevelWindowMSW::IsIconized() const
 474 {
 475     // also update the current state
 476     ((wxTopLevelWindowMSW *)this)->m_iconized = ::IsIconic(GetHwnd()) != 0;
 477
 478     return m_iconized;
 479 }
 480
 481 void wxTopLevelWindowMSW::Restore()
 482 {
 483     DoShowWindow(SW_RESTORE);
 484 }
 485
 486 // ----------------------------------------------------------------------------
 487 // wxTopLevelWindowMSW fullscreen
 488 // ----------------------------------------------------------------------------
 489
 490 bool wxTopLevelWindowMSW::ShowFullScreen(bool show, long style)
 491 {
 492     if (show)
 493     {
 494         if (IsFullScreen())
 495             return FALSE;
 496
 497         m_fsIsShowing = TRUE;
 498         m_fsStyle = style;
 499
 500         // zap the frame borders
 501
 502         // save the 'normal' window style
 503         m_fsOldWindowStyle = GetWindowLong((HWND)GetHWND(), GWL_STYLE);
 504
 505         // save the old position, width & height, maximize state
 506         m_fsOldSize = GetRect();
 507         m_fsIsMaximized = IsMaximized();
 508
 509         // decide which window style flags to turn off
 510         LONG newStyle = m_fsOldWindowStyle;
 511         LONG offFlags = 0;
 512
 513         if (style & wxFULLSCREEN_NOBORDER)
 514             offFlags |= WS_BORDER | WS_THICKFRAME;
 515         if (style & wxFULLSCREEN_NOCAPTION)
 516             offFlags |= (WS_CAPTION | WS_SYSMENU);
 517
 518         newStyle &= (~offFlags);
 519
 520         // change our window style to be compatible with full-screen mode
 521         ::SetWindowLong((HWND)GetHWND(), GWL_STYLE, newStyle);
 522
 523         // resize to the size of the desktop
 524         int width, height;
 525
 526         RECT rect = wxGetWindowRect(::GetDesktopWindow());
 527         width = rect.right - rect.left;
 528         height = rect.bottom - rect.top;
 529
 530         SetSize(width, height);
 531
 532         // now flush the window style cache and actually go full-screen
 533         SetWindowPos((HWND)GetHWND(), HWND_TOP, 0, 0, width, height, SWP_FRAMECHANGED);
 534
 535         wxSizeEvent event(wxSize(width, height), GetId());
 536         GetEventHandler()->ProcessEvent(event);
 537
 538         return TRUE;
 539     }
 540     else
 541     {
 542         if (!IsFullScreen())
 543             return FALSE;
 544
 545         m_fsIsShowing = FALSE;
 546
 547         Maximize(m_fsIsMaximized);
 548         SetWindowLong((HWND)GetHWND(),GWL_STYLE, m_fsOldWindowStyle);
 549         SetWindowPos((HWND)GetHWND(),HWND_TOP,m_fsOldSize.x, m_fsOldSize.y,
 550             m_fsOldSize.width, m_fsOldSize.height, SWP_FRAMECHANGED);
 551
 552         return TRUE;
 553     }
 554 }
 555
 556 // ----------------------------------------------------------------------------
 557 // wxTopLevelWindowMSW misc
 558 // ----------------------------------------------------------------------------
 559
 560 void wxTopLevelWindowMSW::SetIcon(const wxIcon& icon)
 561 {
 562     // this sets m_icon
 563     wxTopLevelWindowBase::SetIcon(icon);
 564
 565 #if defined(__WIN95__) && !defined(__WXMICROWIN__)
 566     if ( m_icon.Ok() )
 567     {
 568         ::SendMessage(GetHwnd(), WM_SETICON,
 569                       (WPARAM)TRUE, (LPARAM)GetHiconOf(m_icon));
 570     }
 571 #endif // __WIN95__
 572 }