src/msw/frame.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/frame.cpp
   3 // Purpose:     wxFrame
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "frame.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/setup.h"
  33     #include "wx/frame.h"
  34     #include "wx/menu.h"
  35     #include "wx/app.h"
  36     #include "wx/utils.h"
  37     #include "wx/dialog.h"
  38     #include "wx/settings.h"
  39     #include "wx/dcclient.h"
  40     #include "wx/mdi.h"
  41     #include "wx/panel.h"
  42 #endif // WX_PRECOMP
  43
  44 #include "wx/msw/private.h"
  45
  46 #if wxUSE_STATUSBAR
  47     #include "wx/statusbr.h"
  48     #include "wx/generic/statusbr.h"
  49 #endif // wxUSE_STATUSBAR
  50
  51 #if wxUSE_TOOLBAR
  52     #include "wx/toolbar.h"
  53 #endif // wxUSE_TOOLBAR
  54
  55 #include "wx/menuitem.h"
  56 #include "wx/log.h"
  57
  58 // ----------------------------------------------------------------------------
  59 // globals
  60 // ----------------------------------------------------------------------------
  61
  62 extern wxWindowList wxModelessWindows;
  63 extern wxList WXDLLEXPORT wxPendingDelete;
  64 extern const wxChar *wxFrameClassName;
  65 extern wxMenu *wxCurrentPopupMenu;
  66
  67 // ----------------------------------------------------------------------------
  68 // event tables
  69 // ----------------------------------------------------------------------------
  70
  71 BEGIN_EVENT_TABLE(wxFrame, wxFrameBase)
  72     EVT_ACTIVATE(wxFrame::OnActivate)
  73     EVT_SYS_COLOUR_CHANGED(wxFrame::OnSysColourChanged)
  74 END_EVENT_TABLE()
  75
  76 IMPLEMENT_DYNAMIC_CLASS(wxFrame, wxWindow)
  77
  78 // ============================================================================
  79 // implementation
  80 // ============================================================================
  81
  82 // ----------------------------------------------------------------------------
  83 // static class members
  84 // ----------------------------------------------------------------------------
  85
  86 #if wxUSE_NATIVE_STATUSBAR
  87     bool wxFrame::m_useNativeStatusBar = TRUE;
  88 #else
  89     bool wxFrame::m_useNativeStatusBar = FALSE;
  90 #endif
  91
  92 // ----------------------------------------------------------------------------
  93 // creation/destruction
  94 // ----------------------------------------------------------------------------
  95
  96 void wxFrame::Init()
  97 {
  98     m_iconized = FALSE;
  99
 100 #if wxUSE_TOOLTIPS
 101     m_hwndToolTip = 0;
 102 #endif
 103
 104     // Data to save/restore when calling ShowFullScreen
 105     m_fsStyle = 0;
 106     m_fsOldWindowStyle = 0;
 107     m_fsStatusBarFields = 0;
 108     m_fsStatusBarHeight = 0;
 109     m_fsToolBarHeight = 0;
 110 //  m_fsMenu = 0;
 111     m_fsIsMaximized = FALSE;
 112     m_fsIsShowing = FALSE;
 113
 114     m_winLastFocused = (wxWindow *)NULL;
 115
 116     // unlike (almost?) all other windows, frames are created hidden
 117     m_isShown = FALSE;
 118 }
 119
 120 bool wxFrame::Create(wxWindow *parent,
 121                      wxWindowID id,
 122                      const wxString& title,
 123                      const wxPoint& pos,
 124                      const wxSize& size,
 125                      long style,
 126                      const wxString& name)
 127 {
 128   SetName(name);
 129   m_windowStyle = style;
 130   m_frameMenuBar = NULL;
 131   m_frameToolBar = NULL;
 132   m_frameStatusBar = NULL;
 133
 134   SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_APPWORKSPACE));
 135
 136   if ( id > -1 )
 137     m_windowId = id;
 138   else
 139     m_windowId = (int)NewControlId();
 140
 141   if (parent) parent->AddChild(this);
 142
 143   int x = pos.x;
 144   int y = pos.y;
 145   int width = size.x;
 146   int height = size.y;
 147
 148   m_iconized = FALSE;
 149
 150   wxTopLevelWindows.Append(this);
 151
 152   MSWCreate(m_windowId, parent, wxFrameClassName, this, title,
 153             x, y, width, height, style);
 154
 155   wxModelessWindows.Append(this);
 156
 157   return TRUE;
 158 }
 159
 160 wxFrame::~wxFrame()
 161 {
 162   m_isBeingDeleted = TRUE;
 163   wxTopLevelWindows.DeleteObject(this);
 164
 165   // the ~wxToolBar() code relies on the previous line to be executed before
 166   // this one, i.e. the frame should remove itself from wxTopLevelWindows
 167   // before destorying its toolbar
 168   DeleteAllBars();
 169
 170   if (wxTheApp && (wxTopLevelWindows.Number() == 0))
 171   {
 172     wxTheApp->SetTopWindow(NULL);
 173
 174     if (wxTheApp->GetExitOnFrameDelete())
 175     {
 176        PostQuitMessage(0);
 177     }
 178   }
 179
 180   wxModelessWindows.DeleteObject(this);
 181
 182   // For some reason, wxWindows can activate another task altogether
 183   // when a frame is destroyed after a modal dialog has been invoked.
 184   // Try to bring the parent to the top.
 185   // MT:Only do this if this frame is currently the active window, else weird
 186   // things start to happen
 187   if ( wxGetActiveWindow() == this )
 188   if (GetParent() && GetParent()->GetHWND())
 189     ::BringWindowToTop((HWND) GetParent()->GetHWND());
 190 }
 191
 192 // Get size *available for subwindows* i.e. excluding menu bar, toolbar etc.
 193 void wxFrame::DoGetClientSize(int *x, int *y) const
 194 {
 195   RECT rect;
 196   ::GetClientRect(GetHwnd(), &rect);
 197
 198 #if wxUSE_STATUSBAR
 199   if ( GetStatusBar() && GetStatusBar()->IsShown() )
 200   {
 201     int statusX, statusY;
 202     GetStatusBar()->GetClientSize(&statusX, &statusY);
 203     rect.bottom -= statusY;
 204   }
 205 #endif // wxUSE_STATUSBAR
 206
 207   wxPoint pt(GetClientAreaOrigin());
 208   rect.bottom -= pt.y;
 209   rect.right -= pt.x;
 210
 211   if ( x )
 212     *x = rect.right;
 213   if ( y )
 214     *y = rect.bottom;
 215 }
 216
 217 // Set the client size (i.e. leave the calculation of borders etc.
 218 // to wxWindows)
 219 void wxFrame::DoSetClientSize(int width, int height)
 220 {
 221   HWND hWnd = GetHwnd();
 222
 223   RECT rect;
 224   ::GetClientRect(hWnd, &rect);
 225
 226   RECT rect2;
 227   GetWindowRect(hWnd, &rect2);
 228
 229   // Find the difference between the entire window (title bar and all)
 230   // and the client area; add this to the new client size to move the
 231   // window
 232   int actual_width = rect2.right - rect2.left - rect.right + width;
 233   int actual_height = rect2.bottom - rect2.top - rect.bottom + height;
 234
 235 #if wxUSE_STATUSBAR
 236   if ( GetStatusBar() && GetStatusBar()->IsShown())
 237   {
 238     int statusX, statusY;
 239     GetStatusBar()->GetClientSize(&statusX, &statusY);
 240     actual_height += statusY;
 241   }
 242 #endif // wxUSE_STATUSBAR
 243
 244   wxPoint pt(GetClientAreaOrigin());
 245   actual_width += pt.y;
 246   actual_height += pt.x;
 247
 248   POINT point;
 249   point.x = rect2.left;
 250   point.y = rect2.top;
 251
 252   MoveWindow(hWnd, point.x, point.y, actual_width, actual_height, (BOOL)TRUE);
 253
 254   wxSizeEvent event(wxSize(width, height), m_windowId);
 255   event.SetEventObject( this );
 256   GetEventHandler()->ProcessEvent(event);
 257 }
 258
 259 void wxFrame::DoGetSize(int *width, int *height) const
 260 {
 261   RECT rect;
 262   GetWindowRect(GetHwnd(), &rect);
 263   *width = rect.right - rect.left;
 264   *height = rect.bottom - rect.top;
 265 }
 266
 267 void wxFrame::DoGetPosition(int *x, int *y) const
 268 {
 269   RECT rect;
 270   GetWindowRect(GetHwnd(), &rect);
 271   POINT point;
 272   point.x = rect.left;
 273   point.y = rect.top;
 274
 275   *x = point.x;
 276   *y = point.y;
 277 }
 278
 279 // ----------------------------------------------------------------------------
 280 // variations around ::ShowWindow()
 281 // ----------------------------------------------------------------------------
 282
 283 void wxFrame::DoShowWindow(int nShowCmd)
 284 {
 285     ::ShowWindow(GetHwnd(), nShowCmd);
 286
 287     m_iconized = nShowCmd == SW_MINIMIZE;
 288 }
 289
 290 bool wxFrame::Show(bool show)
 291 {
 292     // don't use wxWindow version as we want to call DoShowWindow()
 293     if ( !wxWindowBase::Show(show) )
 294         return FALSE;
 295
 296     DoShowWindow(show ? SW_SHOW : SW_HIDE);
 297
 298     if ( show )
 299     {
 300         ::BringWindowToTop(GetHwnd());
 301
 302         wxActivateEvent event(wxEVT_ACTIVATE, TRUE, m_windowId);
 303         event.SetEventObject( this );
 304         GetEventHandler()->ProcessEvent(event);
 305     }
 306     else
 307     {
 308         // Try to highlight the correct window (the parent)
 309         if ( GetParent() )
 310         {
 311             HWND hWndParent = GetHwndOf(GetParent());
 312             if (hWndParent)
 313                 ::BringWindowToTop(hWndParent);
 314         }
 315     }
 316
 317     return TRUE;
 318 }
 319
 320 void wxFrame::Iconize(bool iconize)
 321 {
 322     DoShowWindow(iconize ? SW_MINIMIZE : SW_RESTORE);
 323 }
 324
 325 void wxFrame::Maximize(bool maximize)
 326 {
 327     DoShowWindow(maximize ? SW_MAXIMIZE : SW_RESTORE);
 328 }
 329
 330 void wxFrame::Restore()
 331 {
 332     DoShowWindow(SW_RESTORE);
 333 }
 334
 335 bool wxFrame::IsIconized() const
 336 {
 337   ((wxFrame *)this)->m_iconized = (::IsIconic(GetHwnd()) != 0);
 338   return m_iconized;
 339 }
 340
 341 // Is it maximized?
 342 bool wxFrame::IsMaximized() const
 343 {
 344     return (::IsZoomed(GetHwnd()) != 0);
 345 }
 346
 347 void wxFrame::SetIcon(const wxIcon& icon)
 348 {
 349     wxFrameBase::SetIcon(icon);
 350
 351 #if defined(__WIN95__)
 352     if ( m_icon.Ok() )
 353     {
 354         SendMessage(GetHwnd(), WM_SETICON,
 355                     (WPARAM)TRUE, (LPARAM)(HICON) m_icon.GetHICON());
 356     }
 357 #endif // __WIN95__
 358 }
 359
 360 #if wxUSE_STATUSBAR
 361 wxStatusBar *wxFrame::OnCreateStatusBar(int number,
 362                                         long style,
 363                                         wxWindowID id,
 364                                         const wxString& name)
 365 {
 366     wxStatusBar *statusBar = NULL;
 367
 368 #if wxUSE_NATIVE_STATUSBAR
 369     if ( !UsesNativeStatusBar() )
 370     {
 371         statusBar = (wxStatusBar *)new wxStatusBarGeneric(this, id, style);
 372     }
 373     else
 374 #endif
 375     {
 376         statusBar = new wxStatusBar(this, id, style, name);
 377     }
 378
 379     // Set the height according to the font and the border size
 380     wxClientDC dc(statusBar);
 381     dc.SetFont(statusBar->GetFont());
 382
 383     wxCoord y;
 384     dc.GetTextExtent(_T("X"), NULL, &y );
 385
 386     int height = (int)( (11*y)/10 + 2*statusBar->GetBorderY());
 387
 388     statusBar->SetSize(-1, -1, -1, height);
 389
 390     statusBar->SetFieldsCount(number);
 391
 392     return statusBar;
 393 }
 394
 395 void wxFrame::PositionStatusBar()
 396 {
 397     if ( !m_frameStatusBar )
 398         return;
 399
 400     int w, h;
 401     GetClientSize(&w, &h);
 402     int sw, sh;
 403     m_frameStatusBar->GetSize(&sw, &sh);
 404
 405     // Since we wish the status bar to be directly under the client area,
 406     // we use the adjusted sizes without using wxSIZE_NO_ADJUSTMENTS.
 407     m_frameStatusBar->SetSize(0, h, w, sh);
 408 }
 409 #endif // wxUSE_STATUSBAR
 410
 411 void wxFrame::DetachMenuBar()
 412 {
 413     if ( m_frameMenuBar )
 414     {
 415         m_frameMenuBar->Detach();
 416         m_frameMenuBar = NULL;
 417     }
 418 }
 419
 420 void wxFrame::SetMenuBar(wxMenuBar *menubar)
 421 {
 422     if ( !menubar )
 423     {
 424         DetachMenuBar();
 425
 426         // actually remove the menu from the frame
 427         m_hMenu = (WXHMENU)0;
 428         InternalSetMenuBar();
 429     }
 430     else // set new non NULL menu bar
 431     {
 432         m_frameMenuBar = NULL;
 433
 434         // Can set a menubar several times.
 435         // TODO: how to prevent a memory leak if you have a currently-unattached
 436         // menubar? wxWindows assumes that the frame will delete the menu (otherwise
 437         // there are problems for MDI).
 438         if ( menubar->GetHMenu() )
 439         {
 440             m_hMenu = menubar->GetHMenu();
 441         }
 442         else
 443         {
 444             menubar->Detach();
 445
 446             m_hMenu = menubar->Create();
 447
 448             if ( !m_hMenu )
 449                 return;
 450         }
 451
 452         InternalSetMenuBar();
 453
 454         m_frameMenuBar = menubar;
 455         menubar->Attach(this);
 456     }
 457 }
 458
 459 void wxFrame::InternalSetMenuBar()
 460 {
 461     if ( !::SetMenu(GetHwnd(), (HMENU)m_hMenu) )
 462     {
 463         wxLogLastError(wxT("SetMenu"));
 464     }
 465 }
 466
 467 // Responds to colour changes, and passes event on to children.
 468 void wxFrame::OnSysColourChanged(wxSysColourChangedEvent& event)
 469 {
 470     SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_APPWORKSPACE));
 471     Refresh();
 472
 473     if ( m_frameStatusBar )
 474     {
 475         wxSysColourChangedEvent event2;
 476         event2.SetEventObject( m_frameStatusBar );
 477         m_frameStatusBar->GetEventHandler()->ProcessEvent(event2);
 478     }
 479
 480     // Propagate the event to the non-top-level children
 481     wxWindow::OnSysColourChanged(event);
 482 }
 483
 484 // Pass TRUE to show full screen, FALSE to restore.
 485 bool wxFrame::ShowFullScreen(bool show, long style)
 486 {
 487     if (show)
 488     {
 489         if (IsFullScreen())
 490             return FALSE;
 491
 492         m_fsIsShowing = TRUE;
 493         m_fsStyle = style;
 494
 495         wxToolBar *theToolBar = GetToolBar();
 496         wxStatusBar *theStatusBar = GetStatusBar();
 497
 498         int dummyWidth;
 499
 500         if (theToolBar)
 501             theToolBar->GetSize(&dummyWidth, &m_fsToolBarHeight);
 502         if (theStatusBar)
 503             theStatusBar->GetSize(&dummyWidth, &m_fsStatusBarHeight);
 504
 505         // zap the toolbar, menubar, and statusbar
 506
 507         if ((style & wxFULLSCREEN_NOTOOLBAR) && theToolBar)
 508         {
 509             theToolBar->SetSize(-1,0);
 510             theToolBar->Show(FALSE);
 511         }
 512
 513         if (style & wxFULLSCREEN_NOMENUBAR)
 514             SetMenu((HWND)GetHWND(), (HMENU) NULL);
 515
 516         // Save the number of fields in the statusbar
 517         if ((style & wxFULLSCREEN_NOSTATUSBAR) && theStatusBar)
 518         {
 519             //m_fsStatusBarFields = theStatusBar->GetFieldsCount();
 520             //SetStatusBar((wxStatusBar*) NULL);
 521             //delete theStatusBar;
 522             theStatusBar->Show(FALSE);
 523         }
 524         else
 525             m_fsStatusBarFields = 0;
 526
 527         // zap the frame borders
 528
 529         // save the 'normal' window style
 530         m_fsOldWindowStyle = GetWindowLong((HWND)GetHWND(), GWL_STYLE);
 531
 532         // save the old position, width & height, maximize state
 533         m_fsOldSize = GetRect();
 534         m_fsIsMaximized = IsMaximized();
 535
 536         // decide which window style flags to turn off
 537         LONG newStyle = m_fsOldWindowStyle;
 538         LONG offFlags = 0;
 539
 540         if (style & wxFULLSCREEN_NOBORDER)
 541             offFlags |= WS_BORDER;
 542         if (style & wxFULLSCREEN_NOCAPTION)
 543             offFlags |= (WS_CAPTION | WS_SYSMENU);
 544
 545         newStyle &= (~offFlags);
 546
 547         // change our window style to be compatible with full-screen mode
 548         SetWindowLong((HWND)GetHWND(), GWL_STYLE, newStyle);
 549
 550         // resize to the size of the desktop
 551         int width, height;
 552
 553         RECT rect;
 554         ::GetWindowRect(GetDesktopWindow(), &rect);
 555         width = rect.right - rect.left;
 556         height = rect.bottom - rect.top;
 557
 558         SetSize(width, height);
 559
 560         // now flush the window style cache and actually go full-screen
 561         SetWindowPos((HWND)GetHWND(), HWND_TOP, 0, 0, width, height, SWP_FRAMECHANGED);
 562
 563         wxSizeEvent event(wxSize(width, height), GetId());
 564         GetEventHandler()->ProcessEvent(event);
 565
 566         return TRUE;
 567     }
 568     else
 569     {
 570         if (!IsFullScreen())
 571             return FALSE;
 572
 573         m_fsIsShowing = FALSE;
 574
 575         wxToolBar *theToolBar = GetToolBar();
 576
 577         // restore the toolbar, menubar, and statusbar
 578         if (theToolBar && (m_fsStyle & wxFULLSCREEN_NOTOOLBAR))
 579         {
 580             theToolBar->SetSize(-1, m_fsToolBarHeight);
 581             theToolBar->Show(TRUE);
 582         }
 583
 584         if ((m_fsStyle & wxFULLSCREEN_NOSTATUSBAR)) // && (m_fsStatusBarFields > 0))
 585         {
 586             //CreateStatusBar(m_fsStatusBarFields);
 587             if (GetStatusBar())
 588             {
 589                 GetStatusBar()->Show(TRUE);
 590                 PositionStatusBar();
 591             }
 592         }
 593
 594         if ((m_fsStyle & wxFULLSCREEN_NOMENUBAR) && (m_hMenu != 0))
 595             SetMenu((HWND)GetHWND(), (HMENU)m_hMenu);
 596
 597         Maximize(m_fsIsMaximized);
 598         SetWindowLong((HWND)GetHWND(),GWL_STYLE, m_fsOldWindowStyle);
 599         SetWindowPos((HWND)GetHWND(),HWND_TOP,m_fsOldSize.x, m_fsOldSize.y,
 600             m_fsOldSize.width, m_fsOldSize.height, SWP_FRAMECHANGED);
 601
 602         return TRUE;
 603     }
 604 }
 605
 606 /*
 607  * Frame window
 608  *
 609  */
 610
 611 bool wxFrame::MSWCreate(int id, wxWindow *parent, const wxChar *wclass, wxWindow *wx_win, const wxChar *title,
 612                    int x, int y, int width, int height, long style)
 613
 614 {
 615   m_defaultIcon = (WXHICON) (wxSTD_FRAME_ICON ? wxSTD_FRAME_ICON : wxDEFAULT_FRAME_ICON);
 616
 617   // If child windows aren't properly drawn initially, WS_CLIPCHILDREN
 618   // could be the culprit. But without it, you can get a lot of flicker.
 619
 620   DWORD msflags = 0;
 621   if ( style & wxCAPTION )
 622   {
 623     if ( style & wxFRAME_TOOL_WINDOW )
 624         msflags |= WS_POPUPWINDOW;
 625     else
 626         msflags |= WS_OVERLAPPED;
 627   }
 628   else
 629   {
 630     msflags |= WS_POPUP;
 631   }
 632
 633   if (style & wxMINIMIZE_BOX)
 634     msflags |= WS_MINIMIZEBOX;
 635   if (style & wxMAXIMIZE_BOX)
 636     msflags |= WS_MAXIMIZEBOX;
 637   if (style & wxTHICK_FRAME)
 638     msflags |= WS_THICKFRAME;
 639   if (style & wxSYSTEM_MENU)
 640     msflags |= WS_SYSMENU;
 641   if ( style & wxMINIMIZE )
 642     msflags |= WS_MINIMIZE;
 643   if (style & wxMAXIMIZE)
 644     msflags |= WS_MAXIMIZE;
 645   if (style & wxCAPTION)
 646     msflags |= WS_CAPTION;
 647   if (style & wxCLIP_CHILDREN)
 648     msflags |= WS_CLIPCHILDREN;
 649
 650   // Keep this in wxFrame because it saves recoding this function
 651   // in wxTinyFrame
 652 #if wxUSE_ITSY_BITSY && !defined(__WIN32__)
 653   if (style & wxTINY_CAPTION_VERT)
 654     msflags |= IBS_VERTCAPTION;
 655   if (style & wxTINY_CAPTION_HORIZ)
 656     msflags |= IBS_HORZCAPTION;
 657 #else
 658   if (style & wxTINY_CAPTION_VERT)
 659     msflags |= WS_CAPTION;
 660   if (style & wxTINY_CAPTION_HORIZ)
 661     msflags |= WS_CAPTION;
 662 #endif
 663   if ((style & wxTHICK_FRAME) == 0)
 664     msflags |= WS_BORDER;
 665
 666   WXDWORD extendedStyle = MakeExtendedStyle(style);
 667
 668   // make all frames appear in the win9x shell taskbar unless
 669   // wxFRAME_TOOL_WINDOW is explicitly given - without giving them
 670   // WS_EX_APPWINDOW style, the child (i.e. owned) frames wouldn't appear in it
 671 #if !defined(__WIN16__) && !defined(__SC__)
 672   if (style & wxFRAME_TOOL_WINDOW)
 673       extendedStyle |= WS_EX_TOOLWINDOW;
 674   else
 675       extendedStyle |= WS_EX_APPWINDOW;
 676 #endif
 677
 678   if (style & wxSTAY_ON_TOP)
 679     extendedStyle |= WS_EX_TOPMOST;
 680
 681 #ifndef __WIN16__
 682   if (m_exStyle & wxFRAME_EX_CONTEXTHELP)
 683     extendedStyle |= WS_EX_CONTEXTHELP;
 684 #endif
 685
 686   m_iconized = FALSE;
 687   if ( !wxWindow::MSWCreate(id, parent, wclass, wx_win, title, x, y, width, height,
 688          msflags, NULL, extendedStyle) )
 689          return FALSE;
 690
 691   // Seems to be necessary if we use WS_POPUP
 692   // style instead of WS_OVERLAPPED
 693   if (width > -1 && height > -1)
 694     ::PostMessage(GetHwnd(), WM_SIZE, SIZE_RESTORED, MAKELPARAM(width, height));
 695
 696   return TRUE;
 697 }
 698
 699 // Default activation behaviour - set the focus for the first child
 700 // subwindow found.
 701 void wxFrame::OnActivate(wxActivateEvent& event)
 702 {
 703     if ( event.GetActive() )
 704     {
 705         // restore focus to the child which was last focused
 706         wxLogTrace(_T("focus"), _T("wxFrame %08x activated."), m_hWnd);
 707
 708         wxSetFocusToChild(this, &m_winLastFocused);
 709     }
 710     else
 711     {
 712         // remember the last focused child
 713         m_winLastFocused = FindFocus();
 714         while ( m_winLastFocused )
 715         {
 716             if ( GetChildren().Find(m_winLastFocused) )
 717                 break;
 718
 719             m_winLastFocused = m_winLastFocused->GetParent();
 720         }
 721
 722         wxLogTrace(_T("focus"),
 723                    _T("wxFrame %08x deactivated, last focused: %08x."),
 724                    m_hWnd,
 725                    m_winLastFocused ? GetHwndOf(m_winLastFocused)
 726                                     : NULL);
 727
 728         event.Skip();
 729     }
 730 }
 731
 732 // ----------------------------------------------------------------------------
 733 // tool/status bar stuff
 734 // ----------------------------------------------------------------------------
 735
 736 #if wxUSE_TOOLBAR
 737
 738 wxToolBar* wxFrame::CreateToolBar(long style, wxWindowID id, const wxString& name)
 739 {
 740     if ( wxFrameBase::CreateToolBar(style, id, name) )
 741     {
 742         PositionToolBar();
 743     }
 744
 745     return m_frameToolBar;
 746 }
 747
 748 void wxFrame::PositionToolBar()
 749 {
 750     RECT rect;
 751     ::GetClientRect(GetHwnd(), &rect);
 752
 753 #if wxUSE_STATUSBAR
 754     if ( GetStatusBar() )
 755     {
 756         int statusX, statusY;
 757         GetStatusBar()->GetClientSize(&statusX, &statusY);
 758         rect.bottom -= statusY;
 759     }
 760 #endif // wxUSE_STATUSBAR
 761
 762     if ( GetToolBar() && GetToolBar()->IsShown() )
 763     {
 764         int tw, th;
 765         GetToolBar()->GetSize(&tw, &th);
 766
 767         if ( GetToolBar()->GetWindowStyleFlag() & wxTB_VERTICAL )
 768         {
 769             th = rect.bottom;
 770         }
 771         else
 772         {
 773             tw = rect.right;
 774         }
 775
 776         // Use the 'real' MSW position here
 777         GetToolBar()->SetSize(0, 0, tw, th, wxSIZE_NO_ADJUSTMENTS);
 778     }
 779 }
 780 #endif // wxUSE_TOOLBAR
 781
 782 // ----------------------------------------------------------------------------
 783 // frame state (iconized/maximized/...)
 784 // ----------------------------------------------------------------------------
 785
 786 // propagate our state change to all child frames: this allows us to emulate X
 787 // Windows behaviour where child frames float independently of the parent one
 788 // on the desktop, but are iconized/restored with it
 789 void wxFrame::IconizeChildFrames(bool bIconize)
 790 {
 791     for ( wxWindowList::Node *node = GetChildren().GetFirst();
 792           node;
 793           node = node->GetNext() )
 794     {
 795         wxWindow *win = node->GetData();
 796
 797         // iconizing the frames with this style under Win95 shell puts them at
 798         // the bottom of the screen (as the MDI children) instead of making
 799         // them appear in the taskbar because they are, by virtue of this
 800         // style, not managed by the taskbar - instead leave Windows take care
 801         // of them
 802 #ifdef __WIN95__
 803         if ( win->GetWindowStyle() & wxFRAME_TOOL_WINDOW )
 804             continue;
 805 #endif // Win95
 806
 807         // the child MDI frames are a special case and should not be touched by
 808         // the parent frame - instead, they are managed by the user
 809         wxFrame *frame = wxDynamicCast(win, wxFrame);
 810         if ( frame && !wxDynamicCast(frame, wxMDIChildFrame) )
 811         {
 812             frame->Iconize(bIconize);
 813         }
 814     }
 815 }
 816
 817 // ===========================================================================
 818 // message processing
 819 // ===========================================================================
 820
 821 // ---------------------------------------------------------------------------
 822 // preprocessing
 823 // ---------------------------------------------------------------------------
 824
 825 bool wxFrame::MSWTranslateMessage(WXMSG* pMsg)
 826 {
 827     if ( wxWindow::MSWTranslateMessage(pMsg) )
 828         return TRUE;
 829
 830     // try the menu bar accels
 831     wxMenuBar *menuBar = GetMenuBar();
 832     if ( !menuBar )
 833         return FALSE;
 834
 835     const wxAcceleratorTable& acceleratorTable = menuBar->GetAccelTable();
 836     return acceleratorTable.Translate(this, pMsg);
 837 }
 838
 839 // ---------------------------------------------------------------------------
 840 // our private (non virtual) message handlers
 841 // ---------------------------------------------------------------------------
 842
 843 bool wxFrame::HandlePaint()
 844 {
 845     RECT rect;
 846     if ( GetUpdateRect(GetHwnd(), &rect, FALSE) )
 847     {
 848         if ( m_iconized )
 849         {
 850             HICON hIcon = m_icon.Ok() ? GetHiconOf(m_icon)
 851                                       : (HICON)m_defaultIcon;
 852
 853             // Hold a pointer to the dc so long as the OnPaint() message
 854             // is being processed
 855             PAINTSTRUCT ps;
 856             HDC hdc = ::BeginPaint(GetHwnd(), &ps);
 857
 858             // Erase background before painting or we get white background
 859             MSWDefWindowProc(WM_ICONERASEBKGND, (WORD)(LONG)ps.hdc, 0L);
 860
 861             if ( hIcon )
 862             {
 863                 RECT rect;
 864                 ::GetClientRect(GetHwnd(), &rect);
 865
 866                 // FIXME: why hardcoded?
 867                 static const int icon_width = 32;
 868                 static const int icon_height = 32;
 869
 870                 int icon_x = (int)((rect.right - icon_width)/2);
 871                 int icon_y = (int)((rect.bottom - icon_height)/2);
 872
 873                 ::DrawIcon(hdc, icon_x, icon_y, hIcon);
 874             }
 875
 876             ::EndPaint(GetHwnd(), &ps);
 877
 878             return TRUE;
 879         }
 880         else
 881         {
 882             return wxWindow::HandlePaint();
 883         }
 884     }
 885     else
 886     {
 887         // nothing to paint - processed
 888         return TRUE;
 889     }
 890 }
 891
 892 bool wxFrame::HandleSize(int x, int y, WXUINT id)
 893 {
 894     bool processed = FALSE;
 895
 896     switch ( id )
 897     {
 898         case SIZENORMAL:
 899             // only do it it if we were iconized before, otherwise resizing the
 900             // parent frame has a curious side effect of bringing it under it's
 901             // children
 902             if ( !m_iconized )
 903                 break;
 904
 905             // restore all child frames too
 906             IconizeChildFrames(FALSE);
 907
 908             // fall through
 909
 910         case SIZEFULLSCREEN:
 911             m_iconized = FALSE;
 912             break;
 913
 914         case SIZEICONIC:
 915             // iconize all child frames too
 916             IconizeChildFrames(TRUE);
 917
 918             m_iconized = TRUE;
 919             break;
 920     }
 921
 922     if ( !m_iconized )
 923     {
 924         PositionStatusBar();
 925         PositionToolBar();
 926
 927         wxSizeEvent event(wxSize(x, y), m_windowId);
 928         event.SetEventObject( this );
 929         processed = GetEventHandler()->ProcessEvent(event);
 930     }
 931
 932     return processed;
 933 }
 934
 935 bool wxFrame::HandleCommand(WXWORD id, WXWORD cmd, WXHWND control)
 936 {
 937     if ( control )
 938     {
 939         // In case it's e.g. a toolbar.
 940         wxWindow *win = wxFindWinFromHandle(control);
 941         if ( win )
 942             return win->MSWCommand(cmd, id);
 943     }
 944
 945     // handle here commands from menus and accelerators
 946     if ( cmd == 0 || cmd == 1 )
 947     {
 948         if ( wxCurrentPopupMenu )
 949         {
 950             wxMenu *popupMenu = wxCurrentPopupMenu;
 951             wxCurrentPopupMenu = NULL;
 952
 953             return popupMenu->MSWCommand(cmd, id);
 954         }
 955
 956         if ( ProcessCommand(id) )
 957         {
 958             return TRUE;
 959         }
 960     }
 961
 962     return FALSE;
 963 }
 964
 965 bool wxFrame::HandleMenuSelect(WXWORD nItem, WXWORD flags, WXHMENU hMenu)
 966 {
 967     int item;
 968     if ( flags == 0xFFFF && hMenu == 0 )
 969     {
 970         // menu was removed from screen
 971         item = -1;
 972     }
 973     else if ( !(flags & MF_POPUP) && !(flags & MF_SEPARATOR) )
 974     {
 975         item = nItem;
 976     }
 977     else
 978     {
 979         // don't give hints for separators (doesn't make sense) nor for the
 980         // items opening popup menus (they don't have them anyhow) but do clear
 981         // the status line - otherwise, we would be left with the help message
 982         // for the previous item which doesn't apply any more
 983         wxStatusBar *statbar = GetStatusBar();
 984         if ( statbar )
 985         {
 986             statbar->SetStatusText(wxEmptyString);
 987         }
 988
 989         return FALSE;
 990     }
 991
 992     wxMenuEvent event(wxEVT_MENU_HIGHLIGHT, item);
 993     event.SetEventObject( this );
 994
 995     return GetEventHandler()->ProcessEvent(event);
 996 }
 997
 998 // ---------------------------------------------------------------------------
 999 // the window proc for wxFrame
1000 // ---------------------------------------------------------------------------
1001
1002 long wxFrame::MSWWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
1003 {
1004     long rc = 0;
1005     bool processed = FALSE;
1006
1007     switch ( message )
1008     {
1009         case WM_CLOSE:
1010             // if we can't close, tell the system that we processed the
1011             // message - otherwise it would close us
1012             processed = !Close();
1013             break;
1014
1015         case WM_COMMAND:
1016             {
1017                 WORD id, cmd;
1018                 WXHWND hwnd;
1019                 UnpackCommand((WXWPARAM)wParam, (WXLPARAM)lParam,
1020                               &id, &hwnd, &cmd);
1021
1022                 processed = HandleCommand(id, cmd, (WXHWND)hwnd);
1023             }
1024             break;
1025
1026         case WM_MENUSELECT:
1027             {
1028                 WXWORD item, flags;
1029                 WXHMENU hmenu;
1030                 UnpackMenuSelect(wParam, lParam, &item, &flags, &hmenu);
1031
1032                 processed = HandleMenuSelect(item, flags, hmenu);
1033             }
1034             break;
1035
1036         case WM_PAINT:
1037             processed = HandlePaint();
1038             break;
1039
1040         case WM_QUERYDRAGICON:
1041             {
1042                 HICON hIcon = m_icon.Ok() ? GetHiconOf(m_icon)
1043                                           : (HICON)(m_defaultIcon);
1044                 rc = (long)hIcon;
1045                 processed = rc != 0;
1046             }
1047             break;
1048
1049         case WM_SIZE:
1050             processed = HandleSize(LOWORD(lParam), HIWORD(lParam), wParam);
1051             break;
1052     }
1053
1054     if ( !processed )
1055         rc = wxWindow::MSWWindowProc(message, wParam, lParam);
1056
1057     return rc;
1058 }
1059