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