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(const wxString& rTitle)
  62 {
  63     wxString Title;
  64     const wxChar *pc;
  65     for (pc = rTitle.c_str(); *pc != wxT('\0'); pc++ )
  66     {
  67         if (*pc == wxT('&') )
  68         {
  69             if (*(pc+1) == wxT('&'))
  70             {
  71                 pc++;
  72                 Title << wxT('&');
  73             }
  74             else
  75                 Title << wxT('~');
  76         }
  77         else
  78         {
  79             if ( *pc == wxT('~') )
  80             {
  81                 // tildes must be doubled to prevent them from being
  82                 // interpreted as accelerator character prefix by PM ???
  83                 Title << *pc;
  84             }
  85             Title << *pc;
  86         }
  87     }
  88     return Title;
  89 }
  90
  91 // ============================================================================
  92 // implementation
  93 // ============================================================================
  94
  95 // ----------------------------------------------------------------------------
  96 // dynamic classes implementation
  97 // ----------------------------------------------------------------------------
  98
  99     #if wxUSE_OWNER_DRAWN
 100         IMPLEMENT_DYNAMIC_CLASS2(wxMenuItem, wxMenuItemBase, wxOwnerDrawn)
 101     #else   //!USE_OWNER_DRAWN
 102         IMPLEMENT_DYNAMIC_CLASS(wxMenuItem, wxMenuItemBase)
 103     #endif  //USE_OWNER_DRAWN
 104
 105 // ----------------------------------------------------------------------------
 106 // wxMenuItem
 107 // ----------------------------------------------------------------------------
 108
 109 // ctor & dtor
 110 // -----------
 111
 112 wxMenuItem::wxMenuItem(
 113   wxMenu*                           pParentMenu
 114 , int                               nId
 115 , const wxString&                   rText
 116 , const wxString&                   rStrHelp
 117 , bool                              bCheckable
 118 , wxMenu*                           pSubMenu
 119 )
 120 #if wxUSE_OWNER_DRAWN
 121 :  wxOwnerDrawn( TextToLabel(rText)
 122                 ,bCheckable
 123                )
 124 #endif // owner drawn
 125 {
 126     wxASSERT_MSG(pParentMenu != NULL, wxT("a menu item should have a parent"));
 127
 128 #if  wxUSE_OWNER_DRAWN
 129
 130     //
 131     // Set default menu colors
 132     //
 133     #define SYS_COLOR(c) (wxSystemSettings::GetSystemColour(wxSYS_COLOUR_##c))
 134
 135     SetTextColour(SYS_COLOR(MENUTEXT));
 136     SetBackgroundColour(SYS_COLOR(MENU));
 137
 138     //
 139     // We don't want normal items be owner-drawn
 140     //
 141     ResetOwnerDrawn();
 142
 143     #undef  SYS_COLOR
 144 #endif // wxUSE_OWNER_DRAWN
 145
 146     m_parentMenu  = pParentMenu;
 147     m_subMenu     = pSubMenu;
 148     m_isEnabled   = TRUE;
 149     m_isChecked   = FALSE;
 150     m_id          = nId;
 151     m_text        = TextToLabel(rText);
 152     m_isCheckable = bCheckable;
 153     m_help        = rStrHelp;
 154     memset(&m_vMenuData, '\0', sizeof(m_vMenuData));
 155     m_vMenuData.id= nId;
 156 } // end of wxMenuItem::wxMenuItem
 157
 158 wxMenuItem::~wxMenuItem()
 159 {
 160 } // end of wxMenuItem::~wxMenuItem
 161
 162 //
 163 // Misc
 164 // ----
 165
 166 //
 167 // Return the id for calling Win32 API functions
 168 //
 169 int wxMenuItem::GetRealId() const
 170 {
 171     return m_subMenu ? (int)m_subMenu->GetHMenu() : GetId();
 172 } // end of wxMenuItem::GetRealId
 173
 174 //
 175 // Get item state
 176 // --------------
 177 bool wxMenuItem::IsChecked() const
 178 {
 179     USHORT                          uFlag = SHORT1FROMMR(::WinSendMsg( GetHMenuOf(m_parentMenu)
 180                                                                       ,MM_QUERYITEMATTR
 181                                                                       ,MPFROM2SHORT(GetId(), TRUE)
 182                                                                       ,MPFROMSHORT(MIA_CHECKED)
 183                                                                      ));
 184
 185     return (uFlag & MIA_CHECKED);
 186 } // end of wxMenuItem::IsChecked
 187
 188 wxString wxMenuItemBase::GetLabelFromText(
 189   const wxString&                   rText
 190 )
 191 {
 192     wxString label;
 193     for ( const wxChar *pc = rText.c_str(); *pc; pc++ )
 194     {
 195         if ( *pc == wxT('~') || *pc == wxT('&') )
 196         {
 197             // '~' is the escape character for GTK+ and '&' is the one for
 198             // wxWindows - skip both of them
 199             continue;
 200         }
 201
 202         label += *pc;
 203     }
 204     return label;
 205 }
 206
 207 // change item state
 208 // -----------------
 209
 210 void wxMenuItem::Enable(
 211   bool                              bEnable
 212 )
 213 {
 214     bool                            bOk;
 215
 216     if (m_isEnabled == bEnable)
 217         return;
 218     if (bEnable)
 219         bOk = (bool)::WinSendMsg( GetHMenuOf(m_parentMenu)
 220                                  ,MM_SETITEMATTR
 221                                  ,MPFROM2SHORT(GetRealId(), TRUE)
 222                                  ,MPFROM2SHORT(MIA_DISABLED, FALSE)
 223                                 );
 224     else
 225         bOk = (bool)::WinSendMsg( GetHMenuOf(m_parentMenu)
 226                                  ,MM_SETITEMATTR
 227                                  ,MPFROM2SHORT(GetRealId(), TRUE)
 228                                  ,MPFROM2SHORT(MIA_DISABLED, MIA_DISABLED)
 229                                 );
 230     if (!bOk)
 231     {
 232         wxLogLastError("EnableMenuItem");
 233     }
 234     wxMenuItemBase::Enable(bEnable);
 235 } // end of wxMenuItem::Enable
 236
 237 void wxMenuItem::Check(
 238   bool                              bCheck
 239 )
 240 {
 241     bool                            bOk;
 242
 243     wxCHECK_RET( m_isCheckable, wxT("only checkable items may be checked") );
 244     if (m_isChecked == bCheck)
 245         return;
 246     if (bCheck)
 247         bOk = (bool)::WinSendMsg( GetHMenuOf(m_parentMenu)
 248                                  ,MM_SETITEMATTR
 249                                  ,MPFROM2SHORT(GetRealId(), TRUE)
 250                                  ,MPFROM2SHORT(MIA_CHECKED, MIA_CHECKED)
 251                                 );
 252     else
 253         bOk = (bool)::WinSendMsg( GetHMenuOf(m_parentMenu)
 254                                  ,MM_SETITEMATTR
 255                                  ,MPFROM2SHORT(GetRealId(), TRUE)
 256                                  ,MPFROM2SHORT(MIA_CHECKED, FALSE)
 257                                 );
 258     if (!bOk)
 259     {
 260         wxLogLastError("CheckMenuItem");
 261     }
 262     wxMenuItemBase::Check(bCheck);
 263 } // end of wxMenuItem::Check
 264
 265 void wxMenuItem::SetText(
 266   const wxString&                   rText
 267 )
 268 {
 269     //
 270     // Don't do anything if label didn't change
 271     //
 272
 273     wxString Text = TextToLabel(rText);
 274     if (m_text == Text)
 275         return;
 276
 277     wxMenuItemBase::SetText(Text);
 278     OWNER_DRAWN_ONLY(wxOwnerDrawn::SetName(Text));
 279
 280     HWND                            hMenu = GetHMenuOf(m_parentMenu);
 281
 282     wxCHECK_RET(hMenu, wxT("menuitem without menu"));
 283
 284 #if wxUSE_ACCEL
 285     m_parentMenu->UpdateAccel(this);
 286 #endif // wxUSE_ACCEL
 287
 288     USHORT                          uId = GetRealId();
 289     MENUITEM                        vItem;
 290     USHORT                          uFlagsOld;
 291
 292     if (!::WinSendMsg( hMenu
 293                       ,MM_QUERYITEM
 294                       ,MPFROM2SHORT(uId, TRUE)
 295                       ,(MPARAM)&vItem
 296                      ))
 297     {
 298         wxLogLastError("GetMenuState");
 299     }
 300     else
 301     {
 302         uFlagsOld = vItem.afStyle;
 303         if (IsSubMenu())
 304         {
 305             uFlagsOld |= MIS_SUBMENU;
 306         }
 307
 308         BYTE*                       pData;
 309
 310 #if wxUSE_OWNER_DRAWN
 311         if (IsOwnerDrawn())
 312         {
 313             uFlagsOld |= MIS_OWNERDRAW;
 314             pData = (BYTE*)this;
 315         }
 316         else
 317 #endif  //owner drawn
 318         {
 319             uFlagsOld |= MIS_TEXT;
 320             pData = (BYTE*)Text.c_str();
 321         }
 322
 323         //
 324         // Set the style
 325         //
 326         if (!::WinSendMsg( hMenu
 327                           ,MM_SETITEM
 328                           ,MPFROM2SHORT(uId, TRUE)
 329                           ,(MPARAM)&vItem
 330                          ))
 331         {
 332             wxLogLastError(wxT("ModifyMenu"));
 333         }
 334
 335         //
 336         // Set the text
 337         //
 338         if (::WinSendMsg( hMenu
 339                          ,MM_SETITEMTEXT
 340                          ,MPFROMSHORT(uId)
 341                          ,(MPARAM)pData
 342                         ))
 343         {
 344             wxLogLastError(wxT("ModifyMenu"));
 345         }
 346     }
 347 } // end of wxMenuItem::SetText
 348
 349 void wxMenuItem::SetCheckable(
 350   bool                              bCheckable
 351 )
 352 {
 353     wxMenuItemBase::SetCheckable(bCheckable);
 354     OWNER_DRAWN_ONLY(wxOwnerDrawn::SetCheckable(bCheckable));
 355 } // end of wxMenuItem::SetCheckable
 356
 357 // ----------------------------------------------------------------------------
 358 // wxMenuItemBase
 359 // ----------------------------------------------------------------------------
 360
 361 wxMenuItem* wxMenuItemBase::New(
 362   wxMenu*                           pParentMenu
 363 , int                               nId
 364 , const wxString&                   rName
 365 , const wxString&                   rHelp
 366 , bool                              bIsCheckable
 367 , wxMenu*                           pSubMenu
 368 )
 369 {
 370     return new wxMenuItem( pParentMenu
 371                           ,nId
 372                           ,rName
 373                           ,rHelp
 374                           ,bIsCheckable
 375                           ,pSubMenu
 376                          );
 377 } // end of wxMenuItemBase::New
 378