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         // but don't use the window which is currently hidden as then the
 197         // dialog would be hidden as well
 198         if ( parent && !parent->IsShown() )
 199         {
 200             parent = NULL;
 201         }
 202     }
 203
 204     m_hWnd = (WXHWND)::CreateDialog(wxGetInstance(),
 205                                     dlgTemplate,
 206                                     parent ? GetHwndOf(parent) : NULL,
 207                                     (DLGPROC)wxDlgProc);
 208
 209     if ( !m_hWnd )
 210     {
 211         wxFAIL_MSG(_("Did you forget to include wx/msw/wx.rc in your resources?"));
 212
 213         wxLogSysError(_("Can't create dialog using template '%s'"), dlgTemplate);
 214
 215         return FALSE;
 216     }
 217
 218     long exflags;
 219     (void)MSWGetCreateWindowFlags(&exflags);
 220
 221     if ( exflags )
 222     {
 223         ::SetWindowLong(GetHwnd(), GWL_EXSTYLE, exflags);
 224         ::SetWindowPos(GetHwnd(), NULL, 0, 0, 0, 0,
 225                        SWP_NOSIZE |
 226                        SWP_NOMOVE |
 227                        SWP_NOZORDER |
 228                        SWP_NOACTIVATE);
 229     }
 230
 231 #if defined(__WIN95__)
 232     // For some reason, the system menu is activated when we use the
 233     // WS_EX_CONTEXTHELP style, so let's set a reasonable icon
 234     if ( exflags & WS_EX_CONTEXTHELP )
 235     {
 236         wxFrame *winTop = wxDynamicCast(wxTheApp->GetTopWindow(), wxFrame);
 237         if ( winTop )
 238         {
 239             wxIcon icon = winTop->GetIcon();
 240             if ( icon.Ok() )
 241             {
 242                 ::SendMessage(GetHwnd(), WM_SETICON,
 243                               (WPARAM)TRUE,
 244                               (LPARAM)GetHiconOf(icon));
 245             }
 246         }
 247     }
 248 #endif // __WIN95__
 249
 250     // move the dialog to its initial position without forcing repainting
 251     int x, y, w, h;
 252     if ( MSWGetCreateWindowCoords(pos, size, x, y, w, h) )
 253     {
 254         // we can't use CW_USEDEFAULT here as we're not calling CreateWindow()
 255         // and passing CW_USEDEFAULT to MoveWindow() results in resizing the
 256         // window to (0, 0) size which breaks quite a lot of things, e.g. the
 257         // sizer calculation in wxSizer::Fit()
 258         if ( w == CW_USEDEFAULT )
 259         {
 260             // the exact number doesn't matter, the dialog will be resized
 261             // again soon anyhow but it should be big enough to allow
 262             // calculation relying on "totalSize - clientSize > 0" work, i.e.
 263             // at least greater than the title bar height
 264             w =
 265             h = 100;
 266         }
 267
 268         if ( !::MoveWindow(GetHwnd(), x, y, w, h, FALSE) )
 269         {
 270             wxLogLastError(wxT("MoveWindow"));
 271         }
 272     }
 273     //else: leave it at default position
 274
 275     if ( !title.empty() )
 276     {
 277         ::SetWindowText(GetHwnd(), title);
 278     }
 279
 280     SubclassWin(m_hWnd);
 281
 282     return TRUE;
 283 #endif // __WXMICROWIN__/!__WXMICROWIN__
 284 }
 285
 286 bool wxTopLevelWindowMSW::CreateFrame(const wxString& title,
 287                                       const wxPoint& pos,
 288                                       const wxSize& size)
 289 {
 290     long exflags;
 291     long flags = MSWGetCreateWindowFlags(&exflags);
 292
 293     return MSWCreate(wxCanvasClassName, title, pos, size, flags, exflags);
 294 }
 295
 296 bool wxTopLevelWindowMSW::Create(wxWindow *parent,
 297                                  wxWindowID id,
 298                                  const wxString& title,
 299                                  const wxPoint& pos,
 300                                  const wxSize& size,
 301                                  long style,
 302                                  const wxString& name)
 303 {
 304     // init our fields
 305     Init();
 306
 307     m_windowStyle = style;
 308
 309     SetName(name);
 310
 311     m_windowId = id == -1 ? NewControlId() : id;
 312
 313     wxTopLevelWindows.Append(this);
 314
 315     if ( parent )
 316         parent->AddChild(this);
 317
 318     if ( GetExtraStyle() & wxTOPLEVEL_EX_DIALOG )
 319     {
 320         // TODO: it would be better to construct the dialog template in memory
 321         //       during run-time than to rely on the limited number of
 322         //       templates in wx.rc because:
 323         //          a) you wouldn't have to include wx.rc in all wxWin programs
 324         //             (and the number of complaints about it would dtop)
 325         //          b) we'd be able to provide more templates simply, i.e.
 326         //             we could generate the templates for all style
 327         //             combinations
 328
 329         // we have different dialog templates to allows creation of dialogs
 330         // with & without captions under MSWindows, resizeable or not (but a
 331         // resizeable dialog always has caption - otherwise it would look too
 332         // strange)
 333         const wxChar *dlgTemplate;
 334         if ( style & wxRESIZE_BORDER )
 335             dlgTemplate = wxT("wxResizeableDialog");
 336         else if ( style & wxCAPTION )
 337             dlgTemplate = wxT("wxCaptionDialog");
 338         else
 339             dlgTemplate = wxT("wxNoCaptionDialog");
 340
 341         return CreateDialog(dlgTemplate, title, pos, size);
 342     }
 343     else // !dialog
 344     {
 345         return CreateFrame(title, pos, size);
 346     }
 347 }
 348
 349 wxTopLevelWindowMSW::~wxTopLevelWindowMSW()
 350 {
 351     wxTopLevelWindows.DeleteObject(this);
 352
 353     if ( wxModelessWindows.Find(this) )
 354         wxModelessWindows.DeleteObject(this);
 355
 356     // If this is the last top-level window, exit.
 357     if ( wxTheApp && (wxTopLevelWindows.Number() == 0) )
 358     {
 359         wxTheApp->SetTopWindow(NULL);
 360
 361         if ( wxTheApp->GetExitOnFrameDelete() )
 362         {
 363             ::PostQuitMessage(0);
 364         }
 365     }
 366 }
 367
 368 // ----------------------------------------------------------------------------
 369 // wxTopLevelWindowMSW geometry
 370 // ----------------------------------------------------------------------------
 371
 372 void wxTopLevelWindowMSW::DoSetClientSize(int width, int height)
 373 {
 374     HWND hWnd = GetHwnd();
 375
 376     RECT rectClient;
 377     ::GetClientRect(hWnd, &rectClient);
 378
 379     RECT rectTotal;
 380     ::GetWindowRect(hWnd, &rectTotal);
 381
 382     // Find the difference between the entire window (title bar and all)
 383     // and the client area; add this to the new client size to move the
 384     // window
 385     width += rectTotal.right - rectTotal.left - rectClient.right;
 386     height += rectTotal.bottom - rectTotal.top - rectClient.bottom;
 387
 388     // note that calling GetClientAreaOrigin() takes the toolbar into account
 389     wxPoint pt = GetClientAreaOrigin();
 390     width += pt.x;
 391     height += pt.y;
 392
 393     if ( !::MoveWindow(hWnd, rectTotal.left, rectTotal.top,
 394                        width, height, TRUE /* redraw */) )
 395     {
 396         wxLogLastError(_T("MoveWindow"));
 397     }
 398
 399     wxSizeEvent event(wxSize(width, height), m_windowId);
 400     event.SetEventObject(this);
 401     (void)GetEventHandler()->ProcessEvent(event);
 402 }
 403
 404 // ----------------------------------------------------------------------------
 405 // wxTopLevelWindowMSW showing
 406 // ----------------------------------------------------------------------------
 407
 408 void wxTopLevelWindowMSW::DoShowWindow(int nShowCmd)
 409 {
 410     ::ShowWindow(GetHwnd(), nShowCmd);
 411
 412     m_iconized = nShowCmd == SW_MINIMIZE;
 413 }
 414
 415 bool wxTopLevelWindowMSW::Show(bool show)
 416 {
 417     // don't use wxWindow version as we want to call DoShowWindow() ourselves
 418     if ( !wxWindowBase::Show(show) )
 419         return FALSE;
 420
 421     int nShowCmd;
 422     if ( show )
 423     {
 424         if ( m_maximizeOnShow )
 425         {
 426             // show and maximize
 427             nShowCmd = SW_MAXIMIZE;
 428
 429             m_maximizeOnShow = FALSE;
 430         }
 431         else // just show
 432         {
 433             nShowCmd = SW_SHOW;
 434         }
 435     }
 436     else // hide
 437     {
 438         nShowCmd = SW_HIDE;
 439     }
 440
 441     DoShowWindow(nShowCmd);
 442
 443     if ( show )
 444     {
 445         ::BringWindowToTop(GetHwnd());
 446
 447         wxActivateEvent event(wxEVT_ACTIVATE, TRUE, m_windowId);
 448         event.SetEventObject( this );
 449         GetEventHandler()->ProcessEvent(event);
 450     }
 451     else // hide
 452     {
 453         // Try to highlight the correct window (the parent)
 454         if ( GetParent() )
 455         {
 456             HWND hWndParent = GetHwndOf(GetParent());
 457             if (hWndParent)
 458                 ::BringWindowToTop(hWndParent);
 459         }
 460     }
 461
 462     return TRUE;
 463 }
 464
 465 // ----------------------------------------------------------------------------
 466 // wxTopLevelWindowMSW maximize/minimize
 467 // ----------------------------------------------------------------------------
 468
 469 void wxTopLevelWindowMSW::Maximize(bool maximize)
 470 {
 471     if ( IsShown() )
 472     {
 473         // just maximize it directly
 474         DoShowWindow(maximize ? SW_MAXIMIZE : SW_RESTORE);
 475     }
 476     else // hidden
 477     {
 478         // we can't maximize the hidden frame because it shows it as well, so
 479         // just remember that we should do it later in this case
 480         m_maximizeOnShow = TRUE;
 481     }
 482 }
 483
 484 bool wxTopLevelWindowMSW::IsMaximized() const
 485 {
 486     return ::IsZoomed(GetHwnd()) != 0;
 487 }
 488
 489 void wxTopLevelWindowMSW::Iconize(bool iconize)
 490 {
 491     DoShowWindow(iconize ? SW_MINIMIZE : SW_RESTORE);
 492 }
 493
 494 bool wxTopLevelWindowMSW::IsIconized() const
 495 {
 496     // also update the current state
 497     ((wxTopLevelWindowMSW *)this)->m_iconized = ::IsIconic(GetHwnd()) != 0;
 498
 499     return m_iconized;
 500 }
 501
 502 void wxTopLevelWindowMSW::Restore()
 503 {
 504     DoShowWindow(SW_RESTORE);
 505 }
 506
 507 // ----------------------------------------------------------------------------
 508 // wxTopLevelWindowMSW fullscreen
 509 // ----------------------------------------------------------------------------
 510
 511 bool wxTopLevelWindowMSW::ShowFullScreen(bool show, long style)
 512 {
 513     if (show)
 514     {
 515         if (IsFullScreen())
 516             return FALSE;
 517
 518         m_fsIsShowing = TRUE;
 519         m_fsStyle = style;
 520
 521         // zap the frame borders
 522
 523         // save the 'normal' window style
 524         m_fsOldWindowStyle = GetWindowLong((HWND)GetHWND(), GWL_STYLE);
 525
 526         // save the old position, width & height, maximize state
 527         m_fsOldSize = GetRect();
 528         m_fsIsMaximized = IsMaximized();
 529
 530         // decide which window style flags to turn off
 531         LONG newStyle = m_fsOldWindowStyle;
 532         LONG offFlags = 0;
 533
 534         if (style & wxFULLSCREEN_NOBORDER)
 535             offFlags |= WS_BORDER | WS_THICKFRAME;
 536         if (style & wxFULLSCREEN_NOCAPTION)
 537             offFlags |= (WS_CAPTION | WS_SYSMENU);
 538
 539         newStyle &= (~offFlags);
 540
 541         // change our window style to be compatible with full-screen mode
 542         ::SetWindowLong((HWND)GetHWND(), GWL_STYLE, newStyle);
 543
 544         // resize to the size of the desktop
 545         int width, height;
 546
 547         RECT rect = wxGetWindowRect(::GetDesktopWindow());
 548         width = rect.right - rect.left;
 549         height = rect.bottom - rect.top;
 550
 551         SetSize(width, height);
 552
 553         // now flush the window style cache and actually go full-screen
 554         SetWindowPos((HWND)GetHWND(), HWND_TOP, 0, 0, width, height, SWP_FRAMECHANGED);
 555
 556         wxSizeEvent event(wxSize(width, height), GetId());
 557         GetEventHandler()->ProcessEvent(event);
 558
 559         return TRUE;
 560     }
 561     else
 562     {
 563         if (!IsFullScreen())
 564             return FALSE;
 565
 566         m_fsIsShowing = FALSE;
 567
 568         Maximize(m_fsIsMaximized);
 569         SetWindowLong((HWND)GetHWND(),GWL_STYLE, m_fsOldWindowStyle);
 570         SetWindowPos((HWND)GetHWND(),HWND_TOP,m_fsOldSize.x, m_fsOldSize.y,
 571             m_fsOldSize.width, m_fsOldSize.height, SWP_FRAMECHANGED);
 572
 573         return TRUE;
 574     }
 575 }
 576
 577 // ----------------------------------------------------------------------------
 578 // wxTopLevelWindowMSW misc
 579 // ----------------------------------------------------------------------------
 580
 581 void wxTopLevelWindowMSW::SetIcon(const wxIcon& icon)
 582 {
 583     // this sets m_icon
 584     wxTopLevelWindowBase::SetIcon(icon);
 585
 586 #if defined(__WIN95__) && !defined(__WXMICROWIN__)
 587     if ( m_icon.Ok() )
 588     {
 589         ::SendMessage(GetHwnd(), WM_SETICON,
 590                       (WPARAM)TRUE, (LPARAM)GetHiconOf(m_icon));
 591     }
 592 #endif // __WIN95__
 593 }