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