src/msw/menuitem.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/menuitem.cpp
   3 // Purpose:     wxMenuItem implementation
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     11.11.97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
   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 #if wxUSE_MENUS
  28
  29 #include "wx/menuitem.h"
  30 #include "wx/stockitem.h"
  31
  32 #ifndef WX_PRECOMP
  33     #include "wx/font.h"
  34     #include "wx/bitmap.h"
  35     #include "wx/settings.h"
  36     #include "wx/window.h"
  37     #include "wx/accel.h"
  38     #include "wx/string.h"
  39     #include "wx/log.h"
  40     #include "wx/menu.h"
  41 #endif
  42
  43 #if wxUSE_ACCEL
  44     #include "wx/accel.h"
  45 #endif // wxUSE_ACCEL
  46
  47 #include "wx/msw/private.h"
  48 #include "wx/msw/dc.h"
  49
  50 #ifdef __WXWINCE__
  51 // Implemented in menu.cpp
  52 UINT GetMenuState(HMENU hMenu, UINT id, UINT flags) ;
  53 #endif
  54
  55 #if wxUSE_UXTHEME
  56     #include "wx/msw/uxtheme.h"
  57 #endif
  58
  59 // ---------------------------------------------------------------------------
  60 // macro
  61 // ---------------------------------------------------------------------------
  62
  63 // hide the ugly cast
  64 #define GetHMenuOf(menu)    ((HMENU)menu->GetHMenu())
  65
  66 // ============================================================================
  67 // implementation
  68 // ============================================================================
  69
  70 #if wxUSE_OWNER_DRAWN
  71
  72 #include "wx/fontutil.h"
  73 #include "wx/msw/private/metrics.h"
  74
  75 #ifndef SPI_GETKEYBOARDCUES
  76 #define SPI_GETKEYBOARDCUES 0x100A
  77 #endif
  78
  79 #ifndef DSS_HIDEPREFIX
  80 #define DSS_HIDEPREFIX  0x0200
  81 #endif
  82
  83 #if wxUSE_UXTHEME
  84
  85 enum MENUPARTS
  86 {
  87     MENU_MENUITEM_TMSCHEMA = 1,
  88     MENU_SEPARATOR_TMSCHEMA = 6,
  89     MENU_POPUPBACKGROUND = 9,
  90     MENU_POPUPBORDERS = 10,
  91     MENU_POPUPCHECK = 11,
  92     MENU_POPUPCHECKBACKGROUND = 12,
  93     MENU_POPUPGUTTER = 13,
  94     MENU_POPUPITEM = 14,
  95     MENU_POPUPSEPARATOR = 15,
  96     MENU_POPUPSUBMENU = 16,
  97 };
  98
  99
 100 enum POPUPITEMSTATES
 101 {
 102     MPI_NORMAL = 1,
 103     MPI_HOT = 2,
 104     MPI_DISABLED = 3,
 105     MPI_DISABLEDHOT = 4,
 106 };
 107
 108 enum POPUPCHECKBACKGROUNDSTATES
 109 {
 110     MCB_DISABLED = 1,
 111     MCB_NORMAL = 2,
 112     MCB_BITMAP = 3,
 113 };
 114
 115 enum POPUPCHECKSTATES
 116 {
 117     MC_CHECKMARKNORMAL = 1,
 118     MC_CHECKMARKDISABLED = 2,
 119     MC_BULLETNORMAL = 3,
 120     MC_BULLETDISABLED = 4,
 121 };
 122
 123 const int TMT_MENUFONT       = 803;
 124 const int TMT_BORDERSIZE     = 2403;
 125 const int TMT_CONTENTMARGINS = 3602;
 126 const int TMT_SIZINGMARGINS  = 3601;
 127
 128 #endif // wxUSE_UXTHEME
 129
 130 #endif // wxUSE_OWNER_DRAWN
 131
 132 // ----------------------------------------------------------------------------
 133 // dynamic classes implementation
 134 // ----------------------------------------------------------------------------
 135
 136 #if wxUSE_EXTENDED_RTTI
 137
 138 bool wxMenuItemStreamingCallback( const wxObject *object, wxWriter * , wxPersister * , wxxVariantArray & )
 139 {
 140     const wxMenuItem * mitem = dynamic_cast<const wxMenuItem*>(object) ;
 141     if ( mitem->GetMenu() && !mitem->GetMenu()->GetTitle().empty() )
 142     {
 143         // we don't stream out the first two items for menus with a title, they will be reconstructed
 144         if ( mitem->GetMenu()->FindItemByPosition(0) == mitem || mitem->GetMenu()->FindItemByPosition(1) == mitem )
 145             return false ;
 146     }
 147     return true ;
 148 }
 149
 150 wxBEGIN_ENUM( wxItemKind )
 151     wxENUM_MEMBER( wxITEM_SEPARATOR )
 152     wxENUM_MEMBER( wxITEM_NORMAL )
 153     wxENUM_MEMBER( wxITEM_CHECK )
 154     wxENUM_MEMBER( wxITEM_RADIO )
 155 wxEND_ENUM( wxItemKind )
 156
 157 IMPLEMENT_DYNAMIC_CLASS_XTI_CALLBACK(wxMenuItem, wxObject,"wx/menuitem.h",wxMenuItemStreamingCallback)
 158
 159 wxBEGIN_PROPERTIES_TABLE(wxMenuItem)
 160     wxPROPERTY( Parent,wxMenu*, SetMenu, GetMenu, EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
 161     wxPROPERTY( Id,int, SetId, GetId, EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
 162     wxPROPERTY( Text, wxString , SetText, GetText, wxString(), 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
 163     wxPROPERTY( Help, wxString , SetHelp, GetHelp, wxString(), 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
 164     wxREADONLY_PROPERTY( Kind, wxItemKind , GetKind , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
 165     wxPROPERTY( SubMenu,wxMenu*, SetSubMenu, GetSubMenu, EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
 166     wxPROPERTY( Enabled , bool , Enable , IsEnabled , wxxVariant((bool)true) , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
 167     wxPROPERTY( Checked , bool , Check , IsChecked , wxxVariant((bool)false) , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
 168     wxPROPERTY( Checkable , bool , SetCheckable , IsCheckable , wxxVariant((bool)false) , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
 169 wxEND_PROPERTIES_TABLE()
 170
 171 wxBEGIN_HANDLERS_TABLE(wxMenuItem)
 172 wxEND_HANDLERS_TABLE()
 173
 174 wxDIRECT_CONSTRUCTOR_6( wxMenuItem , wxMenu* , Parent , int , Id , wxString , Text , wxString , Help , wxItemKind , Kind , wxMenu* , SubMenu  )
 175 #else
 176 IMPLEMENT_DYNAMIC_CLASS(wxMenuItem, wxObject)
 177 #endif
 178
 179 // ----------------------------------------------------------------------------
 180 // wxMenuItem
 181 // ----------------------------------------------------------------------------
 182
 183 #if wxUSE_OWNER_DRAWN
 184
 185 namespace
 186 {
 187
 188 // helper class to keep information about metrics and other stuff
 189 // needed for measuring and drawing menu item
 190 class MenuDrawData
 191 {
 192 public:
 193
 194     struct Margins
 195     {
 196         int left;
 197         int right;
 198         int top;
 199         int bottom;
 200
 201         Margins()
 202             : left(0),
 203               right(0),
 204               top(0),
 205               bottom(0)
 206         {}
 207     };
 208
 209     Margins ItemMargin;         // popup item margins
 210
 211     Margins CheckMargin;        // popup check margins
 212     Margins CheckBgMargin;      // popup check background margins
 213
 214     Margins ArrowMargin;        // popup submenu arrow margins
 215
 216     Margins SeparatorMargin;    // popup separator margins
 217
 218     SIZE CheckSize;             // popup check size metric
 219     SIZE ArrowSize;             // popup submenu arrow size metric
 220     SIZE SeparatorSize;         // popup separator size metric
 221
 222     int TextBorder;             // popup border space between
 223                                 // item text and gutter
 224
 225     int AccelBorder;            // popup border space between
 226                                 // item text and accelerator
 227
 228     int ArrowBorder;            // popup border space between
 229                                 // item accelerator and submenu arrow
 230
 231     int Offset;                 // system added space at the end of the menu,
 232                                 // add this offset for remove the extra space
 233
 234     wxFont Font;                // default menu font
 235
 236     bool AlwaysShowCues;        // must keyboard cues always be shown?
 237
 238     bool Theme;                 // is data initialized for FullTheme?
 239
 240     static const MenuDrawData* Get()
 241     {
 242     #if wxUSE_UXTHEME
 243         bool theme = MenuLayout() == FullTheme;
 244         if ( ms_instance->Theme != theme )
 245             ms_instance->Init();
 246     #endif // wxUSE_UXTHEME
 247         return ms_instance;
 248     }
 249
 250     MenuDrawData()
 251     {
 252         ms_instance = this;
 253         Init();
 254     }
 255
 256
 257     // get the theme engine or NULL if themes
 258     // are not available or not supported on menu
 259     static wxUxThemeEngine *GetUxThemeEngine()
 260     {
 261     #if wxUSE_UXTHEME
 262         if ( MenuLayout() == FullTheme )
 263             return wxUxThemeEngine::GetIfActive();
 264     #endif // wxUSE_UXTHEME
 265         return NULL;
 266     }
 267
 268
 269     enum MenuLayoutType
 270     {
 271         FullTheme,      // full menu themes (Vista or new)
 272         PseudoTheme,    // pseudo menu themes (on XP)
 273         Classic
 274     };
 275
 276     static MenuLayoutType MenuLayout()
 277     {
 278         MenuLayoutType menu = Classic;
 279     #if wxUSE_UXTHEME
 280         if ( wxUxThemeEngine::GetIfActive() != NULL )
 281         {
 282             static wxWinVersion ver = wxGetWinVersion();
 283             if ( ver >= wxWinVersion_Vista )
 284                 menu = FullTheme;
 285             else if ( ver == wxWinVersion_XP )
 286                 menu = PseudoTheme;
 287         }
 288     #endif // wxUSE_UXTHEME
 289         return menu;
 290     }
 291
 292 private:
 293     void Init();
 294
 295     static MenuDrawData* ms_instance;
 296 };
 297
 298 MenuDrawData* MenuDrawData::ms_instance = NULL;
 299
 300 MenuDrawData s_menuData;
 301
 302 void MenuDrawData::Init()
 303 {
 304 #if wxUSE_UXTHEME
 305     wxUxThemeEngine* theme = GetUxThemeEngine();
 306     if ( theme )
 307     {
 308         wxWindow* window = static_cast<wxApp*>(wxApp::GetInstance())->GetTopWindow();
 309         wxUxThemeHandle hTheme(window, L"MENU");
 310
 311         theme->GetThemeMargins(hTheme, NULL, MENU_POPUPITEM, 0,
 312                                TMT_CONTENTMARGINS, NULL,
 313                                reinterpret_cast<MARGINS*>(&ItemMargin));
 314
 315         theme->GetThemeMargins(hTheme, NULL, MENU_POPUPCHECK, 0,
 316                                TMT_CONTENTMARGINS, NULL,
 317                                reinterpret_cast<MARGINS*>(&CheckMargin));
 318         theme->GetThemeMargins(hTheme, NULL, MENU_POPUPCHECKBACKGROUND, 0,
 319                                TMT_CONTENTMARGINS, NULL,
 320                                reinterpret_cast<MARGINS*>(&CheckBgMargin));
 321
 322         theme->GetThemeMargins(hTheme, NULL, MENU_POPUPSUBMENU, 0,
 323                                TMT_CONTENTMARGINS, NULL,
 324                                reinterpret_cast<MARGINS*>(&ArrowMargin));
 325
 326         theme->GetThemeMargins(hTheme, NULL, MENU_POPUPSEPARATOR, 0,
 327                                TMT_SIZINGMARGINS, NULL,
 328                                reinterpret_cast<MARGINS*>(&SeparatorMargin));
 329
 330         theme->GetThemePartSize(hTheme, NULL, MENU_POPUPCHECK, 0,
 331                                 NULL, TS_TRUE, &CheckSize);
 332
 333         theme->GetThemePartSize(hTheme, NULL, MENU_POPUPSUBMENU, 0,
 334                                 NULL, TS_TRUE, &ArrowSize);
 335
 336         theme->GetThemePartSize(hTheme, NULL, MENU_POPUPSEPARATOR, 0,
 337                                 NULL, TS_TRUE, &SeparatorSize);
 338
 339         theme->GetThemeInt(hTheme, MENU_POPUPBACKGROUND, 0, TMT_BORDERSIZE, &TextBorder);
 340
 341         AccelBorder = 34;
 342         ArrowBorder = 0;
 343
 344         Offset = -14;
 345
 346         wxNativeFontInfo fontInfo;
 347         theme->GetThemeSysFont(hTheme, TMT_MENUFONT, &fontInfo.lf);
 348         Font = wxFont(fontInfo);
 349
 350         Theme = true;
 351
 352         // native menu doesn't uses the vertical margins
 353         ItemMargin.top = ItemMargin.bottom = 0;
 354
 355         // native menu uses small top margin for separator
 356         if ( SeparatorMargin.top >= 2 )
 357             SeparatorMargin.top -= 2;
 358     }
 359     else
 360 #endif // wxUSE_UXTHEME
 361     {
 362         const NONCLIENTMETRICS& metrics = wxMSWImpl::GetNonClientMetrics();
 363
 364         ItemMargin = Margins();
 365
 366         CheckMargin.left =
 367         CheckMargin.right  = ::GetSystemMetrics(SM_CXEDGE);
 368         CheckMargin.top =
 369         CheckMargin.bottom = ::GetSystemMetrics(SM_CYEDGE);
 370
 371         CheckBgMargin = Margins();
 372
 373         CheckSize.cx = ::GetSystemMetrics(SM_CXMENUCHECK);
 374         CheckSize.cy = ::GetSystemMetrics(SM_CYMENUCHECK);
 375
 376         ArrowMargin = Margins();
 377
 378         ArrowSize = CheckSize;
 379
 380         // separator height with margins
 381         int sepFullSize = metrics.iMenuHeight / 2;
 382
 383         SeparatorMargin.left =
 384         SeparatorMargin.right = 1;
 385         SeparatorMargin.top =
 386         SeparatorMargin.bottom = sepFullSize / 2 - 1;
 387
 388         SeparatorSize.cx = 1;
 389         SeparatorSize.cy = sepFullSize - SeparatorMargin.top - SeparatorMargin.bottom;
 390
 391         TextBorder = 0;
 392         AccelBorder = 8;
 393         ArrowBorder = 6;
 394
 395         Offset = -12;
 396
 397         Font = wxFont(wxNativeFontInfo(metrics.lfMenuFont));
 398
 399         Theme = false;
 400     }
 401
 402     int value;
 403     if ( ::SystemParametersInfo(SPI_GETKEYBOARDCUES, 0, &value, 0) == 0 )
 404     {
 405         // if it's not supported, we must be on an old Windows version
 406         // which always shows them
 407         value = 1;
 408     }
 409
 410     AlwaysShowCues = value == 1;
 411
 412 }
 413
 414 } // anonymous namespace
 415
 416 #endif // wxUSE_OWNER_DRAWN
 417
 418
 419 // ctor & dtor
 420 // -----------
 421
 422 wxMenuItem::wxMenuItem(wxMenu *pParentMenu,
 423                        int id,
 424                        const wxString& text,
 425                        const wxString& strHelp,
 426                        wxItemKind kind,
 427                        wxMenu *pSubMenu)
 428           : wxMenuItemBase(pParentMenu, id, text, strHelp, kind, pSubMenu)
 429 {
 430     Init();
 431 }
 432
 433 #if WXWIN_COMPATIBILITY_2_8
 434 wxMenuItem::wxMenuItem(wxMenu *parentMenu,
 435                        int id,
 436                        const wxString& text,
 437                        const wxString& help,
 438                        bool isCheckable,
 439                        wxMenu *subMenu)
 440           : wxMenuItemBase(parentMenu, id, text, help,
 441                            isCheckable ? wxITEM_CHECK : wxITEM_NORMAL, subMenu)
 442 {
 443     Init();
 444 }
 445 #endif
 446
 447 void wxMenuItem::Init()
 448 {
 449     m_radioGroup.start = -1;
 450     m_isRadioGroupStart = false;
 451
 452 #if  wxUSE_OWNER_DRAWN
 453
 454     // when the color is not valid, wxOwnerDraw takes the default ones.
 455     // If we set the colors here and they are changed by the user during
 456     // the execution, then the colors are not updated until the application
 457     // is restarted and our menus look bad
 458     SetTextColour(wxNullColour);
 459     SetBackgroundColour(wxNullColour);
 460
 461     // setting default colors switched ownerdraw on: switch it off again
 462     SetOwnerDrawn(false);
 463
 464     //  switch ownerdraw back on if using a non default margin
 465     if ( !IsSeparator() )
 466         SetMarginWidth(GetMarginWidth());
 467
 468 #endif // wxUSE_OWNER_DRAWN
 469 }
 470
 471 wxMenuItem::~wxMenuItem()
 472 {
 473 }
 474
 475 // misc
 476 // ----
 477
 478 // return the id for calling Win32 API functions
 479 WXWPARAM wxMenuItem::GetMSWId() const
 480 {
 481     // we must use ids in unsigned short range with Windows functions, if we
 482     // pass ids > USHRT_MAX to them they get very confused (e.g. start
 483     // generating WM_COMMAND messages with negative high word of wParam), so
 484     // use the cast to ensure the id is in range
 485     return m_subMenu ? wxPtrToUInt(m_subMenu->GetHMenu())
 486                      : static_cast<unsigned short>(GetId());
 487 }
 488
 489 // get item state
 490 // --------------
 491
 492 bool wxMenuItem::IsChecked() const
 493 {
 494     // fix that RTTI is always getting the correct state (separators cannot be
 495     // checked, but the Windows call below returns true
 496     if ( IsSeparator() )
 497         return false;
 498
 499     // the item might not be attached to a menu yet
 500     //
 501     // TODO: shouldn't we just always call the base class version? It seems
 502     //       like it ought to always be in sync
 503     if ( !m_parentMenu )
 504         return wxMenuItemBase::IsChecked();
 505
 506     HMENU hmenu = GetHMenuOf(m_parentMenu);
 507     int flag = ::GetMenuState(hmenu, GetMSWId(), MF_BYCOMMAND);
 508
 509     return (flag & MF_CHECKED) != 0;
 510 }
 511
 512 // radio group stuff
 513 // -----------------
 514
 515 void wxMenuItem::SetAsRadioGroupStart()
 516 {
 517     m_isRadioGroupStart = true;
 518 }
 519
 520 void wxMenuItem::SetRadioGroupStart(int start)
 521 {
 522     wxASSERT_MSG( !m_isRadioGroupStart,
 523                   wxT("should only be called for the next radio items") );
 524
 525     m_radioGroup.start = start;
 526 }
 527
 528 void wxMenuItem::SetRadioGroupEnd(int end)
 529 {
 530     wxASSERT_MSG( m_isRadioGroupStart,
 531                   wxT("should only be called for the first radio item") );
 532
 533     m_radioGroup.end = end;
 534 }
 535
 536 // change item state
 537 // -----------------
 538
 539 void wxMenuItem::Enable(bool enable)
 540 {
 541     if ( m_isEnabled == enable )
 542         return;
 543
 544     if ( m_parentMenu )
 545     {
 546         long rc = EnableMenuItem(GetHMenuOf(m_parentMenu),
 547                                  GetMSWId(),
 548                                  MF_BYCOMMAND |
 549                                  (enable ? MF_ENABLED : MF_GRAYED));
 550
 551         if ( rc == -1 )
 552         {
 553             wxLogLastError(wxT("EnableMenuItem"));
 554         }
 555     }
 556
 557     wxMenuItemBase::Enable(enable);
 558 }
 559
 560 void wxMenuItem::Check(bool check)
 561 {
 562     wxCHECK_RET( IsCheckable(), wxT("only checkable items may be checked") );
 563
 564     if ( m_isChecked == check )
 565         return;
 566
 567     if ( m_parentMenu )
 568     {
 569         int flags = check ? MF_CHECKED : MF_UNCHECKED;
 570         HMENU hmenu = GetHMenuOf(m_parentMenu);
 571
 572         if ( GetKind() == wxITEM_RADIO )
 573         {
 574             // it doesn't make sense to uncheck a radio item -- what would this
 575             // do?
 576             if ( !check )
 577                 return;
 578
 579             // get the index of this item in the menu
 580             const wxMenuItemList& items = m_parentMenu->GetMenuItems();
 581             int pos = items.IndexOf(this);
 582             wxCHECK_RET( pos != wxNOT_FOUND,
 583                          wxT("menuitem not found in the menu items list?") );
 584
 585             // get the radio group range
 586             int start,
 587                 end;
 588
 589             if ( m_isRadioGroupStart )
 590             {
 591                 // we already have all information we need
 592                 start = pos;
 593                 end = m_radioGroup.end;
 594             }
 595             else // next radio group item
 596             {
 597                 // get the radio group end from the start item
 598                 start = m_radioGroup.start;
 599                 end = items.Item(start)->GetData()->m_radioGroup.end;
 600             }
 601
 602 #ifdef __WIN32__
 603             // calling CheckMenuRadioItem() with such parameters hangs my system
 604             // (NT4 SP6) and I suspect this could happen to the others as well,
 605             // so don't do it!
 606             wxCHECK_RET( start != -1 && end != -1,
 607                          wxT("invalid ::CheckMenuRadioItem() parameter(s)") );
 608
 609             if ( !::CheckMenuRadioItem(hmenu,
 610                                        start,   // the first radio group item
 611                                        end,     // the last one
 612                                        pos,     // the one to check
 613                                        MF_BYPOSITION) )
 614             {
 615                 wxLogLastError(wxT("CheckMenuRadioItem"));
 616             }
 617 #endif // __WIN32__
 618
 619             // also uncheck all the other items in this radio group
 620             wxMenuItemList::compatibility_iterator node = items.Item(start);
 621             for ( int n = start; n <= end && node; n++ )
 622             {
 623                 if ( n != pos )
 624                 {
 625                     node->GetData()->m_isChecked = false;
 626                 }
 627
 628                 node = node->GetNext();
 629             }
 630         }
 631         else // check item
 632         {
 633             if ( ::CheckMenuItem(hmenu,
 634                                  GetMSWId(),
 635                                  MF_BYCOMMAND | flags) == (DWORD)-1 )
 636             {
 637                 wxFAIL_MSG(wxT("CheckMenuItem() failed, item not in the menu?"));
 638             }
 639         }
 640     }
 641
 642     wxMenuItemBase::Check(check);
 643 }
 644
 645 void wxMenuItem::SetItemLabel(const wxString& txt)
 646 {
 647     wxString text = txt;
 648
 649     // don't do anything if label didn't change
 650     if ( m_text == txt )
 651         return;
 652
 653     // wxMenuItemBase will do stock ID checks
 654     wxMenuItemBase::SetItemLabel(text);
 655
 656     // the item can be not attached to any menu yet and SetItemLabel() is still
 657     // valid to call in this case and should do nothing else
 658     if ( !m_parentMenu )
 659         return;
 660
 661 #if wxUSE_ACCEL
 662     m_parentMenu->UpdateAccel(this);
 663 #endif // wxUSE_ACCEL
 664
 665     const UINT id = GetMSWId();
 666     HMENU hMenu = GetHMenuOf(m_parentMenu);
 667     if ( !hMenu || ::GetMenuState(hMenu, id, MF_BYCOMMAND) == (UINT)-1 )
 668         return;
 669
 670 #if wxUSE_OWNER_DRAWN
 671     if ( IsOwnerDrawn() )
 672     {
 673         // we don't need to do anything for owner drawn items, they will redraw
 674         // themselves using the new text the next time they're displayed
 675         return;
 676     }
 677 #endif // owner drawn
 678
 679     // update the text of the native menu item
 680     WinStruct<MENUITEMINFO> info;
 681
 682     // surprisingly, calling SetMenuItemInfo() with just MIIM_STRING doesn't
 683     // work as it resets the menu bitmap, so we need to first get the old item
 684     // state and then modify it
 685     const bool isLaterThanWin95 = wxGetWinVersion() > wxWinVersion_95;
 686     info.fMask = MIIM_STATE |
 687                  MIIM_ID |
 688                  MIIM_SUBMENU |
 689                  MIIM_CHECKMARKS |
 690                  MIIM_DATA;
 691     if ( isLaterThanWin95 )
 692         info.fMask |= MIIM_BITMAP | MIIM_FTYPE;
 693     else
 694         info.fMask |= MIIM_TYPE;
 695     if ( !::GetMenuItemInfo(hMenu, id, FALSE, &info) )
 696     {
 697         wxLogLastError(wxT("GetMenuItemInfo"));
 698         return;
 699     }
 700
 701     if ( isLaterThanWin95 )
 702         info.fMask |= MIIM_STRING;
 703     //else: MIIM_TYPE already specified
 704     info.dwTypeData = (LPTSTR)m_text.wx_str();
 705     info.cch = m_text.length();
 706     if ( !::SetMenuItemInfo(hMenu, id, FALSE, &info) )
 707     {
 708         wxLogLastError(wxT("SetMenuItemInfo"));
 709     }
 710 }
 711
 712 #if wxUSE_OWNER_DRAWN
 713
 714 int wxMenuItem::MeasureAccelWidth() const
 715 {
 716     wxString accel = GetItemLabel().AfterFirst(wxT('\t'));
 717
 718     wxMemoryDC dc;
 719     wxFont font;
 720     GetFontToUse(font);
 721     dc.SetFont(font);
 722
 723     wxCoord w;
 724     dc.GetTextExtent(accel, &w, NULL);
 725
 726     return w;
 727 }
 728
 729 wxString wxMenuItem::GetName() const
 730 {
 731     return GetItemLabelText();
 732 }
 733
 734 bool wxMenuItem::OnMeasureItem(size_t *width, size_t *height)
 735 {
 736     const MenuDrawData* data = MenuDrawData::Get();
 737
 738     if ( IsOwnerDrawn() )
 739     {
 740         *width  = data->ItemMargin.left + data->ItemMargin.right;
 741         *height = data->ItemMargin.top  + data->ItemMargin.bottom;
 742
 743         if ( IsSeparator() )
 744         {
 745             *width  += data->SeparatorSize.cx
 746                      + data->SeparatorMargin.left + data->SeparatorMargin.right;
 747             *height += data->SeparatorSize.cy
 748                      + data->SeparatorMargin.top + data->SeparatorMargin.bottom;
 749             return true;
 750         }
 751
 752         wxString str = GetName();
 753
 754         wxMemoryDC dc;
 755         wxFont font;
 756         GetFontToUse(font);
 757         dc.SetFont(font);
 758
 759         wxCoord w, h;
 760         dc.GetTextExtent(str, &w, &h);
 761
 762         *width = data->TextBorder + w + data->AccelBorder;
 763         *height = h;
 764
 765         w = m_parentMenu->GetMaxAccelWidth();
 766         if ( w > 0 )
 767             *width += w + data->ArrowBorder;
 768
 769         *width += data->Offset;
 770         *width += data->ArrowMargin.left + data->ArrowSize.cx + data->ArrowMargin.right;
 771     }
 772     else // don't draw the text, just the bitmap (if any)
 773     {
 774         *width = 0;
 775         *height = 0;
 776     }
 777
 778     // bitmap
 779
 780     if ( IsOwnerDrawn() )
 781     {
 782         // width of menu icon in ownerdrawn menu
 783         // if any bitmap is not set, the width of space reserved for icon
 784         // image is equal to the width of std check mark,
 785         // if bitmap is set, then the width is set to the width of the widest
 786         // bitmap in menu (GetMarginWidth()) unless std check mark is wider,
 787         // then it's is set to std mark's width
 788         int imgWidth = wxMax(GetMarginWidth(), data->CheckSize.cx)
 789                      + data->CheckMargin.left + data->CheckMargin.right;
 790
 791         *width += imgWidth + data->CheckBgMargin.left + data->CheckBgMargin.right;
 792     }
 793
 794     if ( m_bmpChecked.IsOk() || m_bmpChecked.IsOk() )
 795     {
 796         // get size of bitmap always return valid value (0 for invalid bitmap),
 797         // so we don't needed check if bitmap is valid ;)
 798         size_t heightBmp = wxMax(m_bmpChecked.GetHeight(), m_bmpUnchecked.GetHeight());
 799         size_t widthtBmp = wxMax(m_bmpChecked.GetWidth(),  m_bmpUnchecked.GetWidth());
 800
 801         if ( IsOwnerDrawn() )
 802         {
 803             heightBmp += data->CheckMargin.top + data->CheckMargin.bottom;
 804         }
 805         else
 806         {
 807             // we must allocate enough space for the bitmap
 808             *width += widthtBmp;
 809         }
 810
 811         // Is BMP height larger than text height?
 812         if ( *height < heightBmp )
 813             *height = heightBmp;
 814     }
 815
 816     // make sure that this item is at least as tall as the system menu height
 817     const size_t menuHeight = data->CheckMargin.top + data->CheckMargin.bottom
 818                             + data->CheckSize.cy;
 819     if (*height < menuHeight)
 820         *height = menuHeight;
 821
 822     return true;
 823 }
 824
 825 bool wxMenuItem::OnDrawItem(wxDC& dc, const wxRect& rc,
 826                             wxODAction WXUNUSED(act), wxODStatus stat)
 827 {
 828     const MenuDrawData* data = MenuDrawData::Get();
 829
 830     wxMSWDCImpl *impl = (wxMSWDCImpl*) dc.GetImpl();
 831     HDC hdc = GetHdcOf(*impl);
 832
 833     RECT rect;
 834     wxCopyRectToRECT(rc, rect);
 835
 836     int imgWidth = wxMax(GetMarginWidth(), data->CheckSize.cx)
 837                  + data->CheckMargin.left + data->CheckMargin.right;
 838
 839     if ( IsOwnerDrawn() )
 840     {
 841         // font and colors to use
 842         wxFont font;
 843         GetFontToUse(font);
 844
 845         wxColour colText1, colBack1;
 846         GetColourToUse(stat, colText1, colBack1);
 847
 848         DWORD colText = wxColourToPalRGB(colText1);
 849         DWORD colBack = wxColourToPalRGB(colBack1);
 850
 851         // calculate metrics of item parts
 852         RECT rcSelection;
 853         RECT rcSeparator;
 854         RECT rcGutter;
 855         RECT rcText;
 856
 857         SetRect(&rcSelection,
 858                 rect.left   + data->ItemMargin.left,
 859                 rect.top    + data->ItemMargin.top,
 860                 rect.right  - data->ItemMargin.right,
 861                 rect.bottom - data->ItemMargin.bottom);
 862
 863         SetRect(&rcSeparator,
 864                 rcSelection.left   + data->SeparatorMargin.left,
 865                 rcSelection.top    + data->SeparatorMargin.top,
 866                 rcSelection.right  - data->SeparatorMargin.right,
 867                 rcSelection.bottom - data->SeparatorMargin.bottom);
 868
 869         CopyRect(&rcGutter, &rcSelection);
 870         rcGutter.right = data->ItemMargin.left
 871                        + data->CheckBgMargin.left
 872                        + imgWidth
 873                        + data->CheckBgMargin.right;
 874
 875         CopyRect(&rcText, &rcSelection);
 876         rcText.left = rcGutter.right + data->TextBorder;
 877
 878 #if wxUSE_UXTHEME
 879         wxUxThemeEngine* theme = MenuDrawData::GetUxThemeEngine();
 880         if ( theme )
 881         {
 882             POPUPITEMSTATES state;
 883             if ( stat & wxODDisabled )
 884             {
 885                 state = (stat & wxODSelected) ? MPI_DISABLEDHOT
 886                                               : MPI_DISABLED;
 887             }
 888             else if ( stat & wxODSelected )
 889             {
 890                 state = MPI_HOT;
 891             }
 892             else
 893             {
 894                 state = MPI_NORMAL;
 895             }
 896
 897             wxUxThemeHandle hTheme(GetMenu()->GetWindow(), L"MENU");
 898
 899             if ( theme->IsThemeBackgroundPartiallyTransparent(hTheme,
 900                     MENU_POPUPITEM, state) )
 901             {
 902                 theme->DrawThemeBackground(hTheme, hdc,
 903                                            MENU_POPUPBACKGROUND,
 904                                            0, &rect, NULL);
 905             }
 906
 907             theme->DrawThemeBackground(hTheme, hdc, MENU_POPUPGUTTER,
 908                                        0, &rcGutter, NULL);
 909
 910             if ( IsSeparator() )
 911             {
 912                 rcSeparator.left = rcGutter.right;
 913                 theme->DrawThemeBackground(hTheme, hdc, MENU_POPUPSEPARATOR,
 914                                            0, &rcSeparator, NULL);
 915                 return true;
 916             }
 917
 918             theme->DrawThemeBackground(hTheme, hdc, MENU_POPUPITEM,
 919                                        state, &rcSelection, NULL);
 920
 921         }
 922         else
 923 #endif // wxUSE_UXTHEME
 924         {
 925             if ( IsSeparator() )
 926             {
 927                 DrawEdge(hdc, &rcSeparator, EDGE_ETCHED, BF_TOP);
 928                 return true;
 929             }
 930
 931             AutoHBRUSH hbr(colBack);
 932             SelectInHDC selBrush(hdc, hbr);
 933             ::FillRect(hdc, &rcSelection, hbr);
 934         }
 935
 936
 937         // draw text label
 938         // using native API because it recognizes '&'
 939
 940         COLORREF colOldText = ::SetTextColor(hdc, colText);
 941         COLORREF colOldBack = ::SetBkColor(hdc, colBack);
 942
 943         int prevMode = SetBkMode(hdc, TRANSPARENT);
 944
 945         SelectInHDC selFont(hdc, GetHfontOf(font));
 946
 947
 948         // item text name without menemonic for calculating size
 949         wxString text = GetName();
 950
 951         SIZE textSize;
 952         ::GetTextExtentPoint32(hdc, text.c_str(), text.length(), &textSize);
 953
 954         // item text name with menemonic
 955         text = GetItemLabel().BeforeFirst('\t');
 956
 957         int flags = DST_PREFIXTEXT;
 958         // themes menu is using specified color for disabled labels
 959         if ( data->MenuLayout() == MenuDrawData::Classic &&
 960              (stat & wxODDisabled) && !(stat & wxODSelected) )
 961             flags |= DSS_DISABLED;
 962
 963         if ( (stat & wxODHidePrefix) && !data->AlwaysShowCues )
 964             flags |= DSS_HIDEPREFIX;
 965
 966         int x = rcText.left;
 967         int y = rcText.top + (rcText.bottom - rcText.top - textSize.cy) / 2;
 968
 969         ::DrawState(hdc, NULL, NULL, (LPARAM)text.wx_str(),
 970                     text.length(), x, y, 0, 0, flags);
 971
 972         // ::SetTextAlign(hdc, TA_RIGHT) doesn't work with DSS_DISABLED or DSS_MONO
 973         // as the last parameter in DrawState() (at least with Windows98). So we have
 974         // to take care of right alignment ourselves.
 975         wxString accel = GetItemLabel().AfterFirst(wxT('\t'));
 976         if ( !accel.empty() )
 977         {
 978             SIZE accelSize;
 979             ::GetTextExtentPoint32(hdc, accel.c_str(), accel.length(), &accelSize);
 980
 981             int flags = DST_TEXT;
 982             // themes menu is using specified color for disabled labels
 983             if ( data->MenuLayout() == MenuDrawData::Classic &&
 984                  (stat & wxODDisabled) && !(stat & wxODSelected) )
 985                 flags |= DSS_DISABLED;
 986
 987             int x = rcText.right - data->ArrowMargin.left
 988                                  - data->ArrowSize.cx
 989                                  - data->ArrowMargin.right
 990                                  - data->ArrowBorder;
 991
 992             // right align accel on FullTheme menu, left otherwise
 993             if ( data->MenuLayout() == MenuDrawData::FullTheme)
 994                 x -= accelSize.cx;
 995             else
 996                 x -= m_parentMenu->GetMaxAccelWidth();
 997
 998             int y = rcText.top + (rcText.bottom - rcText.top - accelSize.cy) / 2;
 999
1000             ::DrawState(hdc, NULL, NULL, (LPARAM)accel.wx_str(),
1001                         accel.length(), x, y, 0, 0, flags);
1002         }
1003
1004         ::SetBkMode(hdc, prevMode);
1005         ::SetBkColor(hdc, colOldBack);
1006         ::SetTextColor(hdc, colOldText);
1007     }
1008
1009
1010     // draw the bitmap
1011
1012     RECT rcImg;
1013     SetRect(&rcImg,
1014             rect.left + data->ItemMargin.left + data->CheckBgMargin.left,
1015             rect.top  + data->ItemMargin.top  + data->CheckBgMargin.top,
1016             rect.left + data->ItemMargin.left + data->CheckBgMargin.left
1017                       + imgWidth,
1018             rect.bottom - data->ItemMargin.bottom - data->CheckBgMargin.bottom);
1019
1020     if ( IsCheckable() && !m_bmpChecked.Ok() )
1021     {
1022         if ( stat & wxODChecked )
1023         {
1024         #if wxUSE_UXTHEME
1025             wxUxThemeEngine* theme = MenuDrawData::GetUxThemeEngine();
1026             if ( theme )
1027             {
1028                 wxUxThemeHandle hTheme(GetMenu()->GetWindow(), L"MENU");
1029
1030                 POPUPCHECKBACKGROUNDSTATES stateCheckBg = (stat & wxODDisabled)
1031                                                             ? MCB_DISABLED
1032                                                             : MCB_NORMAL;
1033
1034                 theme->DrawThemeBackground(hTheme, hdc, MENU_POPUPCHECKBACKGROUND,
1035                                            stateCheckBg, &rcImg, NULL);
1036
1037                 // check mark will be drawn centered on the background
1038
1039                 POPUPCHECKSTATES stateCheck = (stat & wxODDisabled)
1040                                                 ? MC_CHECKMARKDISABLED
1041                                                 : MC_CHECKMARKNORMAL;
1042
1043                 theme->DrawThemeBackground(hTheme, hdc, MENU_POPUPCHECK,
1044                                            stateCheck, &rcImg, NULL);
1045             }
1046             else
1047         #endif // wxUSE_UXTHEME
1048             {
1049                 int cx = imgWidth;
1050                 int cy = rcImg.bottom - rcImg.top;
1051
1052                 // what goes on: DrawFrameControl creates a b/w mask,
1053                 // then we copy it to screen to have right colors
1054
1055                 // first create a monochrome bitmap in a memory DC
1056                 HDC hdcMem = ::CreateCompatibleDC(hdc);
1057                 HBITMAP hbmpCheck = ::CreateBitmap(cx, cy, 1, 1, 0);
1058                 ::SelectObject(hdcMem, hbmpCheck);
1059
1060                 // then draw a check mark into it
1061                 RECT rect = { 0, 0, cx, cy };
1062                 if ( rc.GetHeight() > 0 )
1063                 {
1064                     ::DrawFrameControl(hdcMem, &rect, DFC_MENU, DFCS_MENUCHECK);
1065                 }
1066
1067                 // finally copy it to screen DC and clean up
1068                 ::BitBlt(hdc, rcImg.left, rcImg.top, cx, cy, hdcMem, 0, 0, SRCCOPY);
1069
1070                 ::DeleteDC(hdcMem);
1071             }
1072         }
1073     }
1074     else
1075     {
1076         wxBitmap bmp;
1077
1078         if ( stat & wxODDisabled )
1079         {
1080             bmp = GetDisabledBitmap();
1081         }
1082
1083         if ( !bmp.Ok() )
1084         {
1085             // for not checkable bitmaps we should always use unchecked one
1086             // because their checked bitmap is not set
1087             bmp = GetBitmap(!IsCheckable() || (stat & wxODChecked));
1088
1089 #if wxUSE_IMAGE
1090             if ( bmp.Ok() && stat & wxODDisabled )
1091             {
1092                 // we need to grey out the bitmap as we don't have any specific
1093                 // disabled bitmap
1094                 wxImage imgGrey = bmp.ConvertToImage().ConvertToGreyscale();
1095                 if ( imgGrey.Ok() )
1096                     bmp = wxBitmap(imgGrey);
1097             }
1098 #endif // wxUSE_IMAGE
1099         }
1100
1101         if ( bmp.Ok() )
1102         {
1103             wxMemoryDC dcMem(&dc);
1104             dcMem.SelectObjectAsSource(bmp);
1105
1106             // center bitmap
1107             int nBmpWidth  = bmp.GetWidth(),
1108                 nBmpHeight = bmp.GetHeight();
1109
1110             // there should be enough space!
1111             wxASSERT( nBmpWidth <= imgWidth && nBmpHeight <= (rcImg.bottom - rcImg.top) );
1112
1113             int x = rcImg.left + (imgWidth - nBmpWidth) / 2;
1114             int y = rcImg.top  + (rcImg.bottom - rcImg.top - nBmpHeight) / 2;
1115             dc.Blit(x, y, nBmpWidth, nBmpHeight, &dcMem, 0, 0, wxCOPY, true);
1116         }
1117     }
1118
1119     return true;
1120
1121 }
1122
1123 void wxMenuItem::GetFontToUse(wxFont& font) const
1124 {
1125     font = GetFont();
1126     if ( !font.IsOk() )
1127         font = MenuDrawData::Get()->Font;
1128 }
1129
1130 void wxMenuItem::GetColourToUse(wxODStatus stat, wxColour& colText, wxColour& colBack) const
1131 {
1132 #if wxUSE_UXTHEME
1133     wxUxThemeEngine* theme = MenuDrawData::GetUxThemeEngine();
1134     if ( theme )
1135     {
1136         wxUxThemeHandle hTheme(GetMenu()->GetWindow(), L"MENU");
1137
1138         if ( stat & wxODDisabled)
1139         {
1140             wxRGBToColour(colText, theme->GetThemeSysColor(hTheme, COLOR_GRAYTEXT));
1141         }
1142         else
1143         {
1144             colText = GetTextColour();
1145             if ( !colText.IsOk() )
1146                 wxRGBToColour(colText, theme->GetThemeSysColor(hTheme, COLOR_MENUTEXT));
1147         }
1148
1149         if ( stat & wxODSelected )
1150         {
1151             wxRGBToColour(colBack, theme->GetThemeSysColor(hTheme, COLOR_HIGHLIGHT));
1152         }
1153         else
1154         {
1155             colBack = GetBackgroundColour();
1156             if ( !colBack.IsOk() )
1157                 wxRGBToColour(colBack, theme->GetThemeSysColor(hTheme, COLOR_MENU));
1158         }
1159     }
1160     else
1161 #endif // wxUSE_UXTHEME
1162     {
1163         wxOwnerDrawn::GetColourToUse(stat, colText, colBack);
1164     }
1165 }
1166 #endif // wxUSE_OWNER_DRAWN
1167
1168 // ----------------------------------------------------------------------------
1169 // wxMenuItemBase
1170 // ----------------------------------------------------------------------------
1171
1172 wxMenuItem *wxMenuItemBase::New(wxMenu *parentMenu,
1173                                 int id,
1174                                 const wxString& name,
1175                                 const wxString& help,
1176                                 wxItemKind kind,
1177                                 wxMenu *subMenu)
1178 {
1179     return new wxMenuItem(parentMenu, id, name, help, kind, subMenu);
1180 }
1181
1182 #endif // wxUSE_MENUS