src/msw/dialog.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/dialog.cpp
   3 // Purpose:     wxDialog class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #include "wx/dialog.h"
  28
  29 #ifndef WX_PRECOMP
  30     #include "wx/msw/wrapcdlg.h"
  31     #include "wx/utils.h"
  32     #include "wx/frame.h"
  33     #include "wx/app.h"
  34     #include "wx/button.h"
  35     #include "wx/settings.h"
  36     #include "wx/intl.h"
  37     #include "wx/log.h"
  38     #include "wx/toolbar.h"
  39 #endif
  40
  41 #include "wx/msw/private.h"
  42 #include "wx/evtloop.h"
  43 #include "wx/ptr_scpd.h"
  44
  45 #if defined(__SMARTPHONE__) && defined(__WXWINCE__)
  46     #include "wx/msw/wince/resources.h"
  47 #endif // __SMARTPHONE__ && __WXWINCE__
  48
  49 // ----------------------------------------------------------------------------
  50 // wxWin macros
  51 // ----------------------------------------------------------------------------
  52
  53 #if wxUSE_EXTENDED_RTTI
  54 WX_DEFINE_FLAGS( wxDialogStyle )
  55
  56 wxBEGIN_FLAGS( wxDialogStyle )
  57     // new style border flags, we put them first to
  58     // use them for streaming out
  59     wxFLAGS_MEMBER(wxBORDER_SIMPLE)
  60     wxFLAGS_MEMBER(wxBORDER_SUNKEN)
  61     wxFLAGS_MEMBER(wxBORDER_DOUBLE)
  62     wxFLAGS_MEMBER(wxBORDER_RAISED)
  63     wxFLAGS_MEMBER(wxBORDER_STATIC)
  64     wxFLAGS_MEMBER(wxBORDER_NONE)
  65
  66     // old style border flags
  67     wxFLAGS_MEMBER(wxSIMPLE_BORDER)
  68     wxFLAGS_MEMBER(wxSUNKEN_BORDER)
  69     wxFLAGS_MEMBER(wxDOUBLE_BORDER)
  70     wxFLAGS_MEMBER(wxRAISED_BORDER)
  71     wxFLAGS_MEMBER(wxSTATIC_BORDER)
  72     wxFLAGS_MEMBER(wxNO_BORDER)
  73
  74     // standard window styles
  75     wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
  76     wxFLAGS_MEMBER(wxCLIP_CHILDREN)
  77
  78     // dialog styles
  79     wxFLAGS_MEMBER(wxWS_EX_VALIDATE_RECURSIVELY)
  80     wxFLAGS_MEMBER(wxSTAY_ON_TOP)
  81     wxFLAGS_MEMBER(wxCAPTION)
  82 #if WXWIN_COMPATIBILITY_2_6
  83     wxFLAGS_MEMBER(wxTHICK_FRAME)
  84 #endif // WXWIN_COMPATIBILITY_2_6
  85     wxFLAGS_MEMBER(wxSYSTEM_MENU)
  86     wxFLAGS_MEMBER(wxRESIZE_BORDER)
  87 #if WXWIN_COMPATIBILITY_2_6
  88     wxFLAGS_MEMBER(wxRESIZE_BOX)
  89 #endif // WXWIN_COMPATIBILITY_2_6
  90     wxFLAGS_MEMBER(wxCLOSE_BOX)
  91     wxFLAGS_MEMBER(wxMAXIMIZE_BOX)
  92     wxFLAGS_MEMBER(wxMINIMIZE_BOX)
  93 wxEND_FLAGS( wxDialogStyle )
  94
  95 IMPLEMENT_DYNAMIC_CLASS_XTI(wxDialog, wxTopLevelWindow,"wx/dialog.h")
  96
  97 wxBEGIN_PROPERTIES_TABLE(wxDialog)
  98     wxPROPERTY( Title, wxString, SetTitle, GetTitle, wxString() , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
  99     wxPROPERTY_FLAGS( WindowStyle , wxDialogStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
 100 wxEND_PROPERTIES_TABLE()
 101
 102 wxBEGIN_HANDLERS_TABLE(wxDialog)
 103 wxEND_HANDLERS_TABLE()
 104
 105 wxCONSTRUCTOR_6( wxDialog , wxWindow* , Parent , wxWindowID , Id , wxString , Title , wxPoint , Position , wxSize , Size , long , WindowStyle)
 106
 107 #else
 108 IMPLEMENT_DYNAMIC_CLASS(wxDialog, wxTopLevelWindow)
 109 #endif
 110
 111 // ----------------------------------------------------------------------------
 112 // wxDialogModalData
 113 // ----------------------------------------------------------------------------
 114
 115 // this is simply a container for any data we need to implement modality which
 116 // allows us to avoid changing wxDialog each time the implementation changes
 117 class wxDialogModalData
 118 {
 119 public:
 120     wxDialogModalData(wxDialog *dialog) : m_evtLoop(dialog) { }
 121
 122     void RunLoop()
 123     {
 124         m_evtLoop.Run();
 125     }
 126
 127     void ExitLoop()
 128     {
 129         m_evtLoop.Exit();
 130     }
 131
 132 private:
 133     wxModalEventLoop m_evtLoop;
 134 };
 135
 136 wxDEFINE_TIED_SCOPED_PTR_TYPE(wxDialogModalData)
 137
 138 // ============================================================================
 139 // implementation
 140 // ============================================================================
 141
 142 // ----------------------------------------------------------------------------
 143 // wxDialog construction
 144 // ----------------------------------------------------------------------------
 145
 146 void wxDialog::Init()
 147 {
 148     m_isShown = false;
 149     m_modalData = NULL;
 150 #if wxUSE_TOOLBAR && defined(__POCKETPC__)
 151     m_dialogToolBar = NULL;
 152 #endif
 153     m_hGripper = 0;
 154 }
 155
 156 bool wxDialog::Create(wxWindow *parent,
 157                       wxWindowID id,
 158                       const wxString& title,
 159                       const wxPoint& pos,
 160                       const wxSize& size,
 161                       long style,
 162                       const wxString& name)
 163 {
 164     SetExtraStyle(GetExtraStyle() | wxTOPLEVEL_EX_DIALOG);
 165
 166     // All dialogs should really have this style
 167     style |= wxTAB_TRAVERSAL;
 168
 169     if ( !wxTopLevelWindow::Create(parent, id, title, pos, size, style, name) )
 170         return false;
 171
 172     if ( !m_hasFont )
 173         SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
 174
 175 #if defined(__SMARTPHONE__) && defined(__WXWINCE__)
 176     SetLeftMenu(wxID_OK, _("OK"));
 177 #endif
 178 #if wxUSE_TOOLBAR && defined(__POCKETPC__)
 179     CreateToolBar();
 180 #endif
 181
 182     if ( HasFlag(wxRESIZE_BORDER) )
 183     {
 184         CreateGripper();
 185
 186         Connect(wxEVT_CREATE,
 187                 wxWindowCreateEventHandler(wxDialog::OnWindowCreate));
 188     }
 189
 190     return true;
 191 }
 192
 193 wxDialog::~wxDialog()
 194 {
 195     m_isBeingDeleted = true;
 196
 197     // this will also reenable all the other windows for a modal dialog
 198     Show(false);
 199
 200     DestroyGripper();
 201 }
 202
 203 // ----------------------------------------------------------------------------
 204 // showing the dialogs
 205 // ----------------------------------------------------------------------------
 206
 207 wxWindow *wxDialog::FindSuitableParent() const
 208 {
 209     // first try to use the currently active window
 210     HWND hwndFg = ::GetForegroundWindow();
 211     wxWindow *parent = hwndFg ? wxFindWinFromHandle((WXHWND)hwndFg)
 212                               : NULL;
 213     if ( !parent )
 214     {
 215         // next try the main app window
 216         parent = wxTheApp->GetTopWindow();
 217     }
 218
 219     // finally, check if the parent we found is really suitable
 220     if ( !parent || parent == (wxWindow *)this || !parent->IsShown() )
 221     {
 222         // don't use this one
 223         parent = NULL;
 224     }
 225
 226     return parent;
 227 }
 228
 229 bool wxDialog::Show(bool show)
 230 {
 231     if ( show == IsShown() )
 232         return false;
 233
 234     if ( !show && m_modalData )
 235     {
 236         // we need to do this before calling wxDialogBase version because if we
 237         // had disabled other app windows, they must be reenabled right now as
 238         // if they stay disabled Windows will activate another window (one
 239         // which is enabled, anyhow) when we're hidden in the base class Show()
 240         // and we will lose activation
 241         m_modalData->ExitLoop();
 242     }
 243
 244     if ( show )
 245     {
 246         if (CanDoLayoutAdaptation())
 247             DoLayoutAdaptation();
 248
 249         // this usually will result in TransferDataToWindow() being called
 250         // which will change the controls values so do it before showing as
 251         // otherwise we could have some flicker
 252         InitDialog();
 253     }
 254
 255     wxDialogBase::Show(show);
 256
 257     if ( show )
 258     {
 259         // dialogs don't get WM_SIZE message from ::ShowWindow() for some
 260         // reason so generate it ourselves for consistency with frames and
 261         // dialogs in other ports
 262         //
 263         // NB: normally we should call it just the first time but doing it
 264         //     every time is simpler than keeping a flag
 265         const wxSize size = GetClientSize();
 266         ::SendMessage(GetHwnd(), WM_SIZE,
 267                       SIZE_RESTORED, MAKELPARAM(size.x, size.y));
 268     }
 269
 270     return true;
 271 }
 272
 273 void wxDialog::Raise()
 274 {
 275     ::SetForegroundWindow(GetHwnd());
 276 }
 277
 278 // show dialog modally
 279 int wxDialog::ShowModal()
 280 {
 281     wxASSERT_MSG( !IsModal(), _T("ShowModal() can't be called twice") );
 282
 283     Show();
 284
 285     // EndModal may have been called from InitDialog handler (called from
 286     // inside Show()) and hidden the dialog back again
 287     if ( IsShown() )
 288     {
 289         // enter and run the modal loop
 290         wxDialogModalDataTiedPtr modalData(&m_modalData,
 291                                            new wxDialogModalData(this));
 292         modalData->RunLoop();
 293     }
 294
 295     return GetReturnCode();
 296 }
 297
 298 void wxDialog::EndModal(int retCode)
 299 {
 300     wxASSERT_MSG( IsModal(), _T("EndModal() called for non modal dialog") );
 301
 302     SetReturnCode(retCode);
 303
 304     Hide();
 305 }
 306
 307 // ----------------------------------------------------------------------------
 308 // wxDialog gripper handling
 309 // ----------------------------------------------------------------------------
 310
 311 void wxDialog::SetWindowStyleFlag(long style)
 312 {
 313     wxDialogBase::SetWindowStyleFlag(style);
 314
 315     if ( HasFlag(wxRESIZE_BORDER) )
 316         CreateGripper();
 317     else
 318         DestroyGripper();
 319 }
 320
 321 void wxDialog::CreateGripper()
 322 {
 323     if ( !m_hGripper )
 324     {
 325         // just create it here, it will be positioned and shown later
 326         m_hGripper = (WXHWND)::CreateWindow
 327                                (
 328                                     wxT("SCROLLBAR"),
 329                                     wxT(""),
 330                                     WS_CHILD |
 331                                     WS_CLIPSIBLINGS |
 332                                     SBS_SIZEGRIP |
 333                                     SBS_SIZEBOX |
 334                                     SBS_SIZEBOXBOTTOMRIGHTALIGN,
 335                                     0, 0, 0, 0,
 336                                     GetHwnd(),
 337                                     0,
 338                                     wxGetInstance(),
 339                                     NULL
 340                                );
 341     }
 342 }
 343
 344 void wxDialog::DestroyGripper()
 345 {
 346     if ( m_hGripper )
 347     {
 348         // we used to have trouble with gripper appearing on top (and hence
 349         // overdrawing) the other, real, dialog children -- check that this
 350         // isn't the case automatically (but notice that this could be false if
 351         // we're not shown at all as in this case ResizeGripper() might not
 352         // have been called yet)
 353         wxASSERT_MSG( !IsShown() ||
 354                       ::GetWindow((HWND)m_hGripper, GW_HWNDNEXT) == 0,
 355             _T("Bug in wxWidgets: gripper should be at the bottom of Z-order") );
 356         ::DestroyWindow((HWND) m_hGripper);
 357         m_hGripper = 0;
 358     }
 359 }
 360
 361 void wxDialog::ShowGripper(bool show)
 362 {
 363     wxASSERT_MSG( m_hGripper, _T("shouldn't be called if we have no gripper") );
 364
 365     if ( show )
 366         ResizeGripper();
 367
 368     ::ShowWindow((HWND)m_hGripper, show ? SW_SHOW : SW_HIDE);
 369 }
 370
 371 void wxDialog::ResizeGripper()
 372 {
 373     wxASSERT_MSG( m_hGripper, _T("shouldn't be called if we have no gripper") );
 374
 375     HWND hwndGripper = (HWND)m_hGripper;
 376
 377     const wxRect rectGripper = wxRectFromRECT(wxGetWindowRect(hwndGripper));
 378     const wxSize size = GetClientSize() - rectGripper.GetSize();
 379
 380     ::SetWindowPos(hwndGripper, HWND_BOTTOM,
 381                    size.x, size.y,
 382                    rectGripper.width, rectGripper.height,
 383                    SWP_NOACTIVATE);
 384 }
 385
 386 void wxDialog::OnWindowCreate(wxWindowCreateEvent& event)
 387 {
 388     if ( m_hGripper && IsShown() &&
 389             event.GetWindow() && event.GetWindow()->GetParent() == this )
 390     {
 391         // Put gripper below the newly created child window
 392         ::SetWindowPos((HWND)m_hGripper, HWND_BOTTOM, 0, 0, 0, 0,
 393                        SWP_NOSIZE | SWP_NOMOVE | SWP_NOACTIVATE);
 394     }
 395
 396     event.Skip();
 397 }
 398
 399 // ----------------------------------------------------------------------------
 400 // wxWin event handlers
 401 // ----------------------------------------------------------------------------
 402
 403 #ifdef __POCKETPC__
 404 // Responds to the OK button in a PocketPC titlebar. This
 405 // can be overridden, or you can change the id used for
 406 // sending the event, by calling SetAffirmativeId.
 407 bool wxDialog::DoOK()
 408 {
 409     const int idOk = GetAffirmativeId();
 410     if ( EmulateButtonClickIfPresent(idOk) )
 411         return true;
 412
 413     wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, GetAffirmativeId());
 414     event.SetEventObject(this);
 415
 416     return HandleWindowEvent(event);
 417 }
 418 #endif // __POCKETPC__
 419
 420 #if wxUSE_TOOLBAR && defined(__POCKETPC__)
 421 // create main toolbar by calling OnCreateToolBar()
 422 wxToolBar* wxDialog::CreateToolBar(long style, wxWindowID winid, const wxString& name)
 423 {
 424     m_dialogToolBar = OnCreateToolBar(style, winid, name);
 425
 426     return m_dialogToolBar;
 427 }
 428
 429 // return a new toolbar
 430 wxToolBar *wxDialog::OnCreateToolBar(long style,
 431                                        wxWindowID winid,
 432                                        const wxString& name)
 433 {
 434     return new wxToolMenuBar(this, winid,
 435                          wxDefaultPosition, wxDefaultSize,
 436                          style, name);
 437 }
 438 #endif
 439
 440 // ---------------------------------------------------------------------------
 441 // dialog Windows messages processing
 442 // ---------------------------------------------------------------------------
 443
 444 WXLRESULT wxDialog::MSWWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 445 {
 446     WXLRESULT rc = 0;
 447     bool processed = false;
 448
 449     switch ( message )
 450     {
 451 #ifdef __WXWINCE__
 452         // react to pressing the OK button in the title
 453         case WM_COMMAND:
 454         {
 455             switch ( LOWORD(wParam) )
 456             {
 457 #ifdef __POCKETPC__
 458                 case IDOK:
 459                     processed = DoOK();
 460                     if (!processed)
 461                         processed = !Close();
 462 #endif
 463 #ifdef __SMARTPHONE__
 464                 case IDM_LEFT:
 465                 case IDM_RIGHT:
 466                     processed = HandleCommand( LOWORD(wParam) , 0 , NULL );
 467                     break;
 468 #endif // __SMARTPHONE__
 469             }
 470             break;
 471         }
 472 #endif
 473         case WM_CLOSE:
 474             // if we can't close, tell the system that we processed the
 475             // message - otherwise it would close us
 476             processed = !Close();
 477             break;
 478
 479         case WM_SIZE:
 480             if ( m_hGripper )
 481             {
 482                 switch ( wParam )
 483                 {
 484                     case SIZE_MAXIMIZED:
 485                         ShowGripper(false);
 486                         break;
 487
 488                     case SIZE_RESTORED:
 489                         ShowGripper(true);
 490                 }
 491             }
 492
 493             // the Windows dialogs unfortunately are not meant to be resizeable
 494             // at all and their standard class doesn't include CS_[VH]REDRAW
 495             // styles which means that the window is not refreshed properly
 496             // after the resize and no amount of WS_CLIPCHILDREN/SIBLINGS can
 497             // help with it - so we have to refresh it manually which certainly
 498             // creates flicker but at least doesn't show garbage on the screen
 499             rc = wxWindow::MSWWindowProc(message, wParam, lParam);
 500             processed = true;
 501             if ( HasFlag(wxFULL_REPAINT_ON_RESIZE) )
 502             {
 503                 ::InvalidateRect(GetHwnd(), NULL, false /* erase bg */);
 504             }
 505             break;
 506
 507 #ifndef __WXMICROWIN__
 508         case WM_SETCURSOR:
 509             // we want to override the busy cursor for modal dialogs:
 510             // typically, wxBeginBusyCursor() is called and then a modal dialog
 511             // is shown, but the modal dialog shouldn't have hourglass cursor
 512             if ( IsModal() && wxIsBusy() )
 513             {
 514                 // set our cursor for all windows (but see below)
 515                 wxCursor cursor = m_cursor;
 516                 if ( !cursor.Ok() )
 517                     cursor = wxCURSOR_ARROW;
 518
 519                 ::SetCursor(GetHcursorOf(cursor));
 520
 521                 // in any case, stop here and don't let wxWindow process this
 522                 // message (it would set the busy cursor)
 523                 processed = true;
 524
 525                 // but return false to tell the child window (if the event
 526                 // comes from one of them and not from ourselves) that it can
 527                 // set its own cursor if it has one: thus, standard controls
 528                 // (e.g. text ctrl) still have correct cursors in a dialog
 529                 // invoked while wxIsBusy()
 530                 rc = false;
 531             }
 532             break;
 533 #endif // __WXMICROWIN__
 534     }
 535
 536     if ( !processed )
 537         rc = wxWindow::MSWWindowProc(message, wParam, lParam);
 538
 539     return rc;
 540 }