src/os2/menuitem.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        menuitem.cpp
   3 // Purpose:     wxMenuItem implementation
   4 // Author:      David Webster
   5 // Modified by:
   6 // Created:     10/10/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) David Webster
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // headers & declarations
  14 // ============================================================================
  15
  16 #ifdef __GNUG__
  17     #pragma implementation "menuitem.h"
  18 #endif
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifndef WX_PRECOMP
  24     #include "wx/font.h"
  25     #include "wx/bitmap.h"
  26     #include "wx/settings.h"
  27     #include "wx/font.h"
  28     #include "wx/window.h"
  29     #include "wx/accel.h"
  30     #include "wx/menu.h"
  31     #include "wx/string.h"
  32 #endif
  33
  34 #include "wx/menuitem.h"
  35 #include "wx/log.h"
  36
  37 #if wxUSE_ACCEL
  38     #include "wx/accel.h"
  39 #endif // wxUSE_ACCEL
  40
  41 #include "wx/os2/private.h"
  42
  43 // ---------------------------------------------------------------------------
  44 // macro
  45 // ---------------------------------------------------------------------------
  46
  47 // hide the ugly cast
  48 #define GetHMenuOf(menu)    ((HMENU)menu->GetHMenu())
  49
  50 // conditional compilation
  51 #if wxUSE_OWNER_DRAWN
  52     #define OWNER_DRAWN_ONLY( code ) if ( IsOwnerDrawn() ) code
  53 #else // !wxUSE_OWNER_DRAWN
  54     #define OWNER_DRAWN_ONLY( code )
  55 #endif // wxUSE_OWNER_DRAWN/!wxUSE_OWNER_DRAWN
  56
  57 // ----------------------------------------------------------------------------
  58 // static function for translating menu labels
  59 // ----------------------------------------------------------------------------
  60
  61 static wxString TextToLabel(
  62   const wxString&                   rsTitle
  63 )
  64 {
  65     wxString                        sTitle;
  66     const wxChar*                   zPc;
  67
  68     if (rsTitle.IsEmpty())
  69         return(sTitle);
  70
  71     for (zPc = rsTitle.c_str(); *zPc != wxT('\0'); zPc++)
  72     {
  73         if (*zPc == wxT('&'))
  74         {
  75             if (*(zPc + 1) == wxT('&'))
  76             {
  77                 zPc++;
  78                 sTitle << wxT('&');
  79             }
  80             else
  81                 sTitle << wxT('~');
  82         }
  83         else
  84         {
  85             if ( *zPc == wxT('~'))
  86             {
  87                 //
  88                 // Tildes must be doubled to prevent them from being
  89                 // interpreted as accelerator character prefix by PM ???
  90                 //
  91                 sTitle << *zPc;
  92             }
  93             sTitle << *zPc;
  94         }
  95     }
  96     return(sTitle);
  97 } // end of TextToLabel
  98
  99 // ============================================================================
 100 // implementation
 101 // ============================================================================
 102
 103 // ----------------------------------------------------------------------------
 104 // dynamic classes implementation
 105 // ----------------------------------------------------------------------------
 106
 107 IMPLEMENT_DYNAMIC_CLASS(wxMenuItem, wxObject)
 108
 109 // ----------------------------------------------------------------------------
 110 // wxMenuItem
 111 // ----------------------------------------------------------------------------
 112
 113 // ctor & dtor
 114 // -----------
 115
 116 wxMenuItem::wxMenuItem(
 117   wxMenu*                           pParentMenu
 118 , int                               nId
 119 , const wxString&                   rsText
 120 , const wxString&                   rsHelp
 121 , wxItemKind                        eKind
 122 , wxMenu*                           pSubMenu
 123 )
 124 : wxMenuItemBase( pParentMenu
 125                  ,nId
 126                  ,TextToLabel(rsText)
 127                  ,rsHelp
 128                  ,eKind
 129                  ,pSubMenu
 130                 )
 131 #if wxUSE_OWNER_DRAWN
 132 ,  wxOwnerDrawn( TextToLabel(rsText)
 133                 ,eKind == wxITEM_CHECK
 134                )
 135 #endif // owner drawn
 136 {
 137     wxASSERT_MSG(pParentMenu != NULL, wxT("a menu item should have a parent"));
 138     memset(&m_vMenuData, '\0', sizeof(m_vMenuData));
 139     m_vMenuData.id = (USHORT)nId;
 140
 141     Init();
 142 } // end of wxMenuItem::wxMenuItem
 143
 144 wxMenuItem::wxMenuItem(
 145   wxMenu*                           pParentMenu
 146 , int                               nId
 147 , const wxString&                   rsText
 148 , const wxString&                   rsHelp
 149 , bool                              bIsCheckable
 150 , wxMenu*                           pSubMenu
 151 )
 152 : wxMenuItemBase( pParentMenu
 153                  ,nId
 154                  ,TextToLabel(rsText)
 155                  ,rsHelp
 156                  ,bIsCheckable ? wxITEM_CHECK : wxITEM_NORMAL
 157                  ,pSubMenu
 158                 )
 159 #if wxUSE_OWNER_DRAWN
 160 ,  wxOwnerDrawn( TextToLabel(rsText)
 161                 ,bIsCheckable
 162                )
 163 #endif // owner drawn
 164 {
 165     wxASSERT_MSG(pParentMenu != NULL, wxT("a menu item should have a parent"));
 166     memset(&m_vMenuData, '\0', sizeof(m_vMenuData));
 167     m_vMenuData.id = (USHORT)nId;
 168
 169     Init();
 170 } // end of wxMenuItem::wxMenuItem
 171
 172 void wxMenuItem::Init()
 173 {
 174     m_vRadioGroup.m_nStart = -1;
 175     m_bIsRadioGroupStart = FALSE;
 176
 177 #if  wxUSE_OWNER_DRAWN
 178     //
 179     // Set default menu colors
 180     //
 181     #define SYS_COLOR(c) (wxSystemSettings::GetColour(wxSYS_COLOUR_##c))
 182
 183     SetTextColour(SYS_COLOR(MENUTEXT));
 184     SetBackgroundColour(SYS_COLOR(MENU));
 185
 186     //
 187     // We don't want normal items be owner-drawn
 188     //
 189     ResetOwnerDrawn();
 190     #undef  SYS_COLOR
 191
 192     //
 193     // Tell the owner drawing code to to show the accel string as well
 194     //
 195     SetAccelString(m_text.AfterFirst(_T('\t')));
 196 #endif // wxUSE_OWNER_DRAWN
 197 } // end of wxMenuItem::Init
 198
 199 wxMenuItem::~wxMenuItem()
 200 {
 201 } // end of wxMenuItem::~wxMenuItem
 202
 203 //
 204 // Misc
 205 // ----
 206
 207 //
 208 // Return the id for calling Win32 API functions
 209 //
 210 int wxMenuItem::GetRealId() const
 211 {
 212     return m_subMenu ? (int)m_subMenu->GetHMenu() : GetId();
 213 } // end of wxMenuItem::GetRealId
 214
 215 //
 216 // Get item state
 217 // --------------
 218 bool wxMenuItem::IsChecked() const
 219 {
 220     USHORT                          uFlag = SHORT1FROMMR(::WinSendMsg( GetHMenuOf(m_parentMenu)
 221                                                                       ,MM_QUERYITEMATTR
 222                                                                       ,MPFROM2SHORT(GetId(), TRUE)
 223                                                                       ,MPFROMSHORT(MIA_CHECKED)
 224                                                                      ));
 225
 226     return (uFlag & MIA_CHECKED);
 227 } // end of wxMenuItem::IsChecked
 228
 229 wxString wxMenuItemBase::GetLabelFromText(
 230   const wxString&                   rsText
 231 )
 232 {
 233     wxString                        sLabel;
 234
 235     for (const char* zPc = rsText.c_str(); *zPc; zPc++)
 236     {
 237         if (*zPc == wxT('~') || *zPc == wxT('&'))
 238         {
 239             //
 240             // '~' is the escape character for OS/2PM and '&' is the one for
 241             // wxWindows - skip both of them
 242             //
 243             continue;
 244         }
 245         sLabel += *zPc;
 246     }
 247     return sLabel;
 248 } // end of wxMenuItemBase::GetLabelFromText
 249
 250 //
 251 // Radio group stuff
 252 // -----------------
 253 //
 254 void wxMenuItem::SetAsRadioGroupStart()
 255 {
 256     m_bIsRadioGroupStart = TRUE;
 257 } // end of wxMenuItem::SetAsRadioGroupStart
 258
 259 void wxMenuItem::SetRadioGroupStart(
 260   int                               nStart
 261 )
 262 {
 263     wxASSERT_MSG( !m_bIsRadioGroupStart
 264                  ,_T("should only be called for the next radio items")
 265                 );
 266
 267     m_vRadioGroup.m_nStart = nStart;
 268 } // wxMenuItem::SetRadioGroupStart
 269
 270 void wxMenuItem::SetRadioGroupEnd(
 271   int                               nEnd
 272 )
 273 {
 274     wxASSERT_MSG( m_bIsRadioGroupStart
 275                  ,_T("should only be called for the first radio item")
 276                 );
 277     m_vRadioGroup.m_nEnd = nEnd;
 278 } // end of wxMenuItem::SetRadioGroupEnd
 279
 280 // change item state
 281 // -----------------
 282
 283 void wxMenuItem::Enable(
 284   bool                              bEnable
 285 )
 286 {
 287     bool                            bOk;
 288
 289     if (m_isEnabled == bEnable)
 290         return;
 291     if (bEnable)
 292         bOk = (bool)::WinSendMsg( GetHMenuOf(m_parentMenu)
 293                                  ,MM_SETITEMATTR
 294                                  ,MPFROM2SHORT(GetRealId(), TRUE)
 295                                  ,MPFROM2SHORT(MIA_DISABLED, FALSE)
 296                                 );
 297     else
 298         bOk = (bool)::WinSendMsg( GetHMenuOf(m_parentMenu)
 299                                  ,MM_SETITEMATTR
 300                                  ,MPFROM2SHORT(GetRealId(), TRUE)
 301                                  ,MPFROM2SHORT(MIA_DISABLED, MIA_DISABLED)
 302                                 );
 303     if (!bOk)
 304     {
 305         wxLogLastError("EnableMenuItem");
 306     }
 307     wxMenuItemBase::Enable(bEnable);
 308 } // end of wxMenuItem::Enable
 309
 310 void wxMenuItem::Check(
 311   bool                              bCheck
 312 )
 313 {
 314     bool                            bOk;
 315
 316     wxCHECK_RET( IsCheckable(), wxT("only checkable items may be checked") );
 317     if (m_isChecked == bCheck)
 318         return;
 319
 320     HMENU                           hMenu = GetHmenuOf(m_parentMenu);
 321
 322     if (GetKind() == wxITEM_RADIO)
 323     {
 324         //
 325         // It doesn't make sense to uncheck a radio item - what would this do?
 326         //
 327         if (!bCheck)
 328             return;
 329
 330         //
 331         // Get the index of this item in the menu
 332         //
 333         const wxMenuItemList&       rItems = m_parentMenu->GetMenuItems();
 334         int                         nPos = rItems.IndexOf(this);
 335
 336         wxCHECK_RET( nPos != wxNOT_FOUND
 337                     ,_T("menuitem not found in the menu items list?")
 338                    );
 339
 340         //
 341         // Get the radio group range
 342         //
 343         int                         nStart;
 344         int                         nEnd;
 345
 346         if (m_bIsRadioGroupStart)
 347         {
 348             //
 349             // We already have all information we need
 350             //
 351             nStart = nPos;
 352             nEnd   = m_vRadioGroup.m_nEnd;
 353         }
 354         else // next radio group item
 355         {
 356             //
 357             // Get the radio group end from the start item
 358             //
 359             nStart = m_vRadioGroup.m_nStart;
 360             nEnd = rItems.Item(nStart)->GetData()->m_vRadioGroup.m_nEnd;
 361         }
 362
 363         //
 364         // Also uncheck all the other items in this radio group
 365         //
 366         wxMenuItemList::Node*       pNode = rItems.Item(nStart);
 367
 368         for (int n = nStart; n <= nEnd && pNode; n++)
 369         {
 370             if (n == nPos)
 371             {
 372                 ::WinSendMsg( hMenu
 373                              ,MM_SETITEMATTR
 374                              ,MPFROM2SHORT(n, TRUE)
 375                              ,MPFROM2SHORT(MIA_CHECKED, MIA_CHECKED)
 376                             );
 377             }
 378             if (n != nPos)
 379             {
 380                 pNode->GetData()->m_isChecked = FALSE;
 381                 ::WinSendMsg( hMenu
 382                              ,MM_SETITEMATTR
 383                              ,MPFROM2SHORT(n, TRUE)
 384                              ,MPFROM2SHORT(MIA_CHECKED, FALSE)
 385                             );
 386             }
 387             pNode = pNode->GetNext();
 388         }
 389     }
 390     else // check item
 391     {
 392         if (bCheck)
 393             bOk = (bool)::WinSendMsg( hMenu
 394                                      ,MM_SETITEMATTR
 395                                      ,MPFROM2SHORT(GetRealId(), TRUE)
 396                                      ,MPFROM2SHORT(MIA_CHECKED, MIA_CHECKED)
 397                                     );
 398         else
 399             bOk = (bool)::WinSendMsg( hMenu
 400                                      ,MM_SETITEMATTR
 401                                      ,MPFROM2SHORT(GetRealId(), TRUE)
 402                                      ,MPFROM2SHORT(MIA_CHECKED, FALSE)
 403                                     );
 404     }
 405     if (!bOk)
 406     {
 407         wxLogLastError("CheckMenuItem");
 408     }
 409     wxMenuItemBase::Check(bCheck);
 410 } // end of wxMenuItem::Check
 411
 412 void wxMenuItem::SetText(
 413   const wxString&                   rText
 414 )
 415 {
 416     //
 417     // Don't do anything if label didn't change
 418     //
 419
 420     wxString                        sText = TextToLabel(rText);
 421     if (m_text == sText)
 422         return;
 423
 424     wxMenuItemBase::SetText(sText);
 425     OWNER_DRAWN_ONLY(wxOwnerDrawn::SetName(sText));
 426
 427     HWND                            hMenu = GetHmenuOf(m_parentMenu);
 428
 429     wxCHECK_RET(hMenu, wxT("menuitem without menu"));
 430
 431 #if wxUSE_ACCEL
 432     m_parentMenu->UpdateAccel(this);
 433 #endif // wxUSE_ACCEL
 434
 435     USHORT                          uId = GetRealId();
 436     MENUITEM                        vItem;
 437     USHORT                          uFlagsOld;
 438
 439     if (!::WinSendMsg( hMenu
 440                       ,MM_QUERYITEM
 441                       ,MPFROM2SHORT(uId, TRUE)
 442                       ,(MPARAM)&vItem
 443                      ))
 444     {
 445         wxLogLastError("GetMenuState");
 446     }
 447     else
 448     {
 449         uFlagsOld = vItem.afStyle;
 450         if (IsSubMenu())
 451         {
 452             uFlagsOld |= MIS_SUBMENU;
 453         }
 454
 455         BYTE*                       pData;
 456
 457 #if wxUSE_OWNER_DRAWN
 458         if (IsOwnerDrawn())
 459         {
 460             uFlagsOld |= MIS_OWNERDRAW;
 461             pData = (BYTE*)this;
 462         }
 463         else
 464 #endif  //owner drawn
 465         {
 466             uFlagsOld |= MIS_TEXT;
 467             pData = (BYTE*)sText.c_str();
 468         }
 469
 470         //
 471         // Set the style
 472         //
 473         if (!::WinSendMsg( hMenu
 474                           ,MM_SETITEM
 475                           ,MPFROM2SHORT(uId, TRUE)
 476                           ,(MPARAM)&vItem
 477                          ))
 478         {
 479             wxLogLastError(wxT("ModifyMenu"));
 480         }
 481
 482         //
 483         // Set the text
 484         //
 485         if (::WinSendMsg( hMenu
 486                          ,MM_SETITEMTEXT
 487                          ,MPFROMSHORT(uId)
 488                          ,(MPARAM)pData
 489                         ))
 490         {
 491             wxLogLastError(wxT("ModifyMenu"));
 492         }
 493     }
 494 } // end of wxMenuItem::SetText
 495
 496 void wxMenuItem::SetCheckable(
 497   bool                              bCheckable
 498 )
 499 {
 500     wxMenuItemBase::SetCheckable(bCheckable);
 501     OWNER_DRAWN_ONLY(wxOwnerDrawn::SetCheckable(bCheckable));
 502 } // end of wxMenuItem::SetCheckable
 503
 504 // ----------------------------------------------------------------------------
 505 // wxMenuItemBase
 506 // ----------------------------------------------------------------------------
 507
 508 wxMenuItem* wxMenuItemBase::New(
 509   wxMenu*                           pParentMenu
 510 , int                               nId
 511 , const wxString&                   rName
 512 , const wxString&                   rHelp
 513 , wxItemKind                        kind
 514 , wxMenu*                           pSubMenu
 515 )
 516 {
 517     return new wxMenuItem( pParentMenu
 518                           ,nId
 519                           ,rName
 520                           ,rHelp
 521                           ,kind
 522                           ,pSubMenu
 523                          );
 524 } // end of wxMenuItemBase::New
 525