listbox.cpp

很牛的GUI源码wxWidgets-2.8.0.zip 可在多种平台下运行.

///////////////////////////////////////////////////////////////////////////////
// Name:        src/mac/classic/listbox.cpp
// Purpose:     wxListBox
// Author:      Stefan Csomor
// Modified by:
// Created:     1998-01-01
// RCS-ID:      $Id: listbox.cpp,v 1.20 2006/07/25 01:31:08 VZ Exp $
// Copyright:   (c) Stefan Csomor
// Licence:     wxWindows licence
///////////////////////////////////////////////////////////////////////////////

#include "wx/wxprec.h"

#if wxUSE_LISTBOX

#include "wx/listbox.h"

#ifndef WX_PRECOMP
    #include "wx/dynarray.h"
    #include "wx/log.h"
    #include "wx/app.h"
    #include "wx/utils.h"
    #include "wx/button.h"
    #include "wx/settings.h"
    #include "wx/toplevel.h"
#endif

IMPLEMENT_DYNAMIC_CLASS(wxListBox, wxControl)

BEGIN_EVENT_TABLE(wxListBox, wxControl)
    EVT_SIZE( wxListBox::OnSize )
    EVT_CHAR( wxListBox::OnChar )
END_EVENT_TABLE()

#include "wx/mac/uma.h"

#if PRAGMA_STRUCT_ALIGN
    #pragma options align=mac68k
#elif PRAGMA_STRUCT_PACKPUSH
    #pragma pack(push, 2)
#elif PRAGMA_STRUCT_PACK
    #pragma pack(2)
#endif

typedef struct {
    unsigned short instruction;
    void (*function)();
} ldefRec, *ldefPtr, **ldefHandle;

#if PRAGMA_STRUCT_ALIGN
    #pragma options align=reset
#elif PRAGMA_STRUCT_PACKPUSH
    #pragma pack(pop)
#elif PRAGMA_STRUCT_PACK
    #pragma pack()
#endif

#if TARGET_CARBON
const short kwxMacListItemHeight = 19 ;
#else
const short kwxMacListItemHeight = 14 ;
#endif

extern "C"
{
static pascal void wxMacListDefinition( short message, Boolean isSelected, Rect *drawRect,
                                     Cell cell, short dataOffset, short dataLength,
                                     ListHandle listHandle ) ;
}

static pascal void wxMacListDefinition( short message, Boolean isSelected, Rect *drawRect,
                                     Cell cell, short dataOffset, short dataLength,
                                     ListHandle listHandle )
{
    wxListBox*          list;
    list = (wxListBox*) GetControlReference( (ControlHandle) GetListRefCon(listHandle) );
    if ( list == NULL )
        return ;

    GrafPtr savePort;
    GrafPtr grafPtr;
    RgnHandle savedClipRegion;
    SInt32 savedPenMode;
    GetPort(&savePort);
    SetPort((**listHandle).port);
    grafPtr = (**listHandle).port ;
    // typecast our refCon

    //  Calculate the cell rect.

    switch( message ) {
    case lInitMsg:
        break;

    case lCloseMsg:
        break;

    case lDrawMsg:
        {
            const wxString linetext = list->m_stringArray[cell.v] ;

            //  Save the current clip region, and set the clip region to the area we are about
            //  to draw.

            savedClipRegion = NewRgn();
            GetClip( savedClipRegion );

            ClipRect( drawRect );
            EraseRect( drawRect );

            const wxFont& font = list->GetFont();
            if ( font.Ok() )
            {
                ::TextFont( font.GetMacFontNum() ) ;
                ::TextSize( font.GetMacFontSize() ) ;
                ::TextFace( font.GetMacFontStyle() ) ;
            }
            else
            {
                ::TextFont( kFontIDMonaco ) ;
                ::TextSize( 9  );
                ::TextFace( 0 ) ;
            }

#if TARGET_CARBON
            {
                Rect frame = { drawRect->top, drawRect->left + 4,
                               drawRect->top + kwxMacListItemHeight, drawRect->right + 10000 } ;
                CFMutableStringRef mString = CFStringCreateMutableCopy( NULL , 0 , wxMacCFStringHolder(linetext , list->GetFont().GetEncoding()) ) ;
                ::TruncateThemeText( mString , kThemeCurrentPortFont, kThemeStateActive, drawRect->right - drawRect->left , truncEnd , NULL ) ;
                ::DrawThemeTextBox( mString,
                                    kThemeCurrentPortFont,
                                    kThemeStateActive,
                                    false,
                                    &frame,
                                    teJustLeft,
                                    nil );
                                    CFRelease( mString ) ;
            }
#else
            {
                wxCharBuffer text = linetext.mb_str( wxConvLocal) ;
                MoveTo(drawRect->left + 4 , drawRect->top + 10 );
                DrawText(text, 0 , strlen(text) );
            }
#endif
            //  If the cell is hilited, do the hilite now. Paint the cell contents with the
            //  appropriate QuickDraw transform mode.

            if( isSelected ) {
                savedPenMode = GetPortPenMode( (CGrafPtr) grafPtr );
                SetPortPenMode( (CGrafPtr)grafPtr, hilitetransfermode );
                PaintRect( drawRect );
                SetPortPenMode( (CGrafPtr)grafPtr, savedPenMode );
            }

            //  Restore the saved clip region.

            SetClip( savedClipRegion );
            DisposeRgn( savedClipRegion );
        }
        break;
    case lHiliteMsg:

        //  Hilite or unhilite the cell. Paint the cell contents with the
        //  appropriate QuickDraw transform mode.

        GetPort( &grafPtr );
        savedPenMode = GetPortPenMode( (CGrafPtr)grafPtr );
        SetPortPenMode( (CGrafPtr)grafPtr, hilitetransfermode );
        PaintRect( drawRect );
        SetPortPenMode( (CGrafPtr)grafPtr, savedPenMode );
        break;
    default :
        break ;
    }
    SetPort(savePort);
}

extern "C" void MacDrawStringCell(Rect *cellRect, Cell lCell, ListHandle theList, long refCon) ;
// resources ldef ids
const short kwxMacListWithVerticalScrollbar = 128 ;
const short kwxMacListWithVerticalAndHorizontalScrollbar = 129 ;

// ============================================================================
// list box control implementation
// ============================================================================

// Listbox item
wxListBox::wxListBox()
{
  m_noItems = 0;
  m_selected = 0;
  m_macList = NULL ;
}

static ListDefUPP macListDefUPP = NULL ;

bool wxListBox::Create(wxWindow *parent, wxWindowID id,
                       const wxPoint& pos,
                       const wxSize& size,
                       const wxArrayString& choices,
                       long style,
                       const wxValidator& validator,
                       const wxString& name)
{
    wxCArrayString chs(choices);

    return Create(parent, id, pos, size, chs.GetCount(), chs.GetStrings(),
                  style, validator, name);
}

bool wxListBox::Create(wxWindow *parent, wxWindowID id,
                       const wxPoint& pos,
                       const wxSize& size,
                       int n, const wxString choices[],
                       long style,
                       const wxValidator& validator,
                       const wxString& name)
{
    if ( !wxListBoxBase::Create(parent, id, pos, size, style & ~(wxHSCROLL|wxVSCROLL), validator, name) )
        return false;

    m_noItems = 0 ; // this will be increased by our append command
    m_selected = 0;

    Rect bounds ;
    Str255 title ;

    MacPreControlCreate( parent , id ,  wxEmptyString , pos , size ,style, validator , name , &bounds , title ) ;

    ListDefSpec listDef;
    listDef.defType = kListDefUserProcType;
    if ( macListDefUPP == NULL )
    {
        macListDefUPP = NewListDefUPP( wxMacListDefinition );
    }
    listDef.u.userProc = macListDefUPP ;

    Str255 fontName ;
    SInt16 fontSize ;
    Style fontStyle ;
#if TARGET_CARBON
    GetThemeFont(kThemeViewsFont , GetApplicationScript() , fontName , &fontSize , &fontStyle ) ;
#else
    GetFontName( kFontIDMonaco , fontName ) ;
    fontSize = 9 ;
    fontStyle = normal ;
#endif
    SetFont( wxFont (fontSize, wxSWISS, wxNORMAL, wxNORMAL , false , wxMacMakeStringFromPascal( fontName ) ) ) ;
#if TARGET_CARBON
    Size asize;


    CreateListBoxControl( MAC_WXHWND(parent->MacGetRootWindow()), &bounds, false, 0, 1, (style & wxLB_HSCROLL), true,
                          kwxMacListItemHeight, kwxMacListItemHeight, false, &listDef, (ControlRef *)&m_macControl );

    GetControlData( (ControlHandle) m_macControl, kControlNoPart, kControlListBoxListHandleTag,
                   sizeof(ListHandle), (Ptr) &m_macList, &asize);

    SetControlReference( (ControlHandle) m_macControl, (long) this);
    SetControlVisibility( (ControlHandle) m_macControl, false, false);

#else

    long    result ;
    wxStAppResource resload ;
    m_macControl = (WXWidget) ::NewControl( MAC_WXHWND(parent->MacGetRootWindow()) , &bounds , title , false ,
                  (style & wxLB_HSCROLL) ? kwxMacListWithVerticalAndHorizontalScrollbar : kwxMacListWithVerticalScrollbar ,
                  0 , 0, kControlListBoxProc , (long) this ) ;
    ::GetControlData( (ControlHandle) m_macControl , kControlNoPart , kControlListBoxListHandleTag ,
               sizeof( ListHandle ) , (char*) &m_macList  , &result ) ;

    HLock( (Handle) m_macList ) ;
    ldefHandle ldef ;
    ldef = (ldefHandle) NewHandle( sizeof(ldefRec) ) ;
    if (  (**(ListHandle)m_macList).listDefProc != NULL )
    {
      (**ldef).instruction = 0x4EF9;  /* JMP instruction */
      (**ldef).function = (void(*)()) listDef.u.userProc;
      (**(ListHandle)m_macList).listDefProc = (Handle) ldef ;
    }

    Point pt = (**(ListHandle)m_macList).cellSize ;
    pt.v = kwxMacListItemHeight ;
    LCellSize( pt , (ListHandle)m_macList ) ;
    LAddColumn( 1 , 0 , (ListHandle)m_macList ) ;
#endif
    OptionBits  options = 0;
    if ( style & wxLB_MULTIPLE )
    {
        options += lExtendDrag + lUseSense  ;
    }
    else if ( style & wxLB_EXTENDED )
    {
        // default behaviour
    }
    else
    {
        options = (OptionBits) lOnlyOne ;
    }
    SetListSelectionFlags((ListHandle)m_macList, options);

    for ( int i = 0 ; i < n ; i++ )
    {
        Append( choices[i] ) ;
    }

    MacPostControlCreate() ;

    LSetDrawingMode( true , (ListHandle)m_macList ) ;

    return true;
}

wxListBox::~wxListBox()
{
    FreeData() ;
    // avoid access during destruction
    SetControlReference( (ControlHandle) m_macControl , NULL ) ;
    if ( m_macList )
    {
#if !TARGET_CARBON
        DisposeHandle( (**(ListHandle)m_macList).listDefProc ) ;
        (**(ListHandle)m_macList).listDefProc = NULL ;
#endif
        m_macList = NULL ;
    }
}

void wxListBox::FreeData()
{
#if wxUSE_OWNER_DRAWN
    if ( m_windowStyle & wxLB_OWNERDRAW )
    {
        size_t uiCount = m_aItems.Count();
        while ( uiCount-- != 0 ) {
            delete m_aItems[uiCount];
            m_aItems[uiCount] = NULL;
        }

        m_aItems.Clear();
    }
    else
#endif // wxUSE_OWNER_DRAWN
    if ( HasClientObjectData() )
    {
        for ( unsigned int n = 0; n < m_noItems; n++ )
        {
            delete GetClientObject(n);
        }
    }
}

void  wxListBox::DoSetSize(int x, int y,
            int width, int height,
            int sizeFlags )
{
    wxControl::DoSetSize( x , y , width , height , sizeFlags ) ;
#if TARGET_CARBON
    Rect bounds ;
    GetControlBounds( (ControlHandle) m_macControl , &bounds ) ;
    ControlRef control = GetListVerticalScrollBar( (ListHandle)m_macList ) ;
    if ( control )
    {
        Rect scrollbounds ;
        GetControlBounds( control , &scrollbounds ) ;
        if( scrollbounds.right != bounds.right + 1 )
        {
            UMAMoveControl( control , bounds.right - (scrollbounds.right - scrollbounds.left) + 1 ,
                scrollbounds.top ) ;
        }
    }
#endif
}
void wxListBox::DoSetFirstItem(int N)
{
    MacScrollTo( N ) ;
}

void wxListBox::Delete(unsigned int n)
{
    wxCHECK_RET( IsValid(n),
                 wxT("invalid index in wxListBox::Delete") );

#if wxUSE_OWNER_DRAWN
    delete m_aItems[n];
    m_aItems.RemoveAt(n);
#else // !wxUSE_OWNER_DRAWN
    if ( HasClientObjectData() )
    {
        delete GetClientObject(n);
    }
#endif // wxUSE_OWNER_DRAWN/!wxUSE_OWNER_DRAWN
    m_stringArray.RemoveAt(n) ;
    m_dataArray.RemoveAt(n) ;
    m_noItems--;

    MacDelete(n) ;
}

int wxListBox::DoAppend(const wxString& item)
{
    InvalidateBestSize();

    unsigned int index = m_noItems ;
    m_stringArray.Add( item ) ;
    m_dataArray.Add( NULL );
    m_noItems ++;
    DoSetItemClientData( index , NULL ) ;
    MacAppend( item ) ;

    return index ;
}

void wxListBox::DoSetItems(const wxArrayString& choices, void** clientData)
{
    MacSetRedraw( false ) ;
    Clear() ;
    int n = choices.GetCount();

    for( int i = 0 ; i < n ; ++i )
    {
        if ( clientData )
        {
#if wxUSE_OWNER_DRAWN
            wxASSERT_MSG(clientData[i] == NULL,
                wxT("Can't use client data with owner-drawn listboxes"));
#else // !wxUSE_OWNER_DRAWN
            Append( choices[i] , clientData[i] ) ;
#endif
        }
        else
            Append( choices[i] ) ;
    }

#if wxUSE_OWNER_DRAWN
    if ( m_windowStyle & wxLB_OWNERDRAW ) {
        // first delete old items
        unsigned int ui = m_aItems.Count();
        while ( ui-- != 0 ) {
            delete m_aItems[ui];
            m_aItems[ui] = NULL;
        }
        m_aItems.Empty();

        // then create new ones
        for ( ui = 0; ui < m_noItems; ui++ ) {
            wxOwnerDrawn *pNewItem = CreateItem(ui);
            pNewItem->SetName(choices[ui]);
            m_aItems.Add(pNewItem);
        }
    }
#endif // wxUSE_OWNER_DRAWN
    MacSetRedraw( true ) ;
}

bool wxListBox::HasMultipleSelection() const
{
    return (m_windowStyle & wxLB_MULTIPLE) || (m_windowStyle & wxLB_EXTENDED);
}

int wxListBox::FindString(const wxString& s, bool bCase) const
{
    if ( s.Right(1) == wxT("*") )
    {
        wxString search = s.Left( s.length() - 1 ) ;
        int len = search.length() ;
        Str255 s1 , s2 ;
        wxMacStringToPascal( search , s2 ) ;

        for ( unsigned int i = 0 ; i < m_noItems ; ++ i )
        {
            wxMacStringToPascal( m_stringArray[i].Left( len ) , s1 ) ;

            if ( EqualString( s1 , s2 , bCase , false ) )
                return (int)i ;
        }
        if ( s.Left(1) == wxT("*") && s.length() > 1 )
        {
            wxString st = s ;
            st.MakeLower() ;
            for ( unsigned int i = 0 ; i < m_noItems ; ++i )
            {
                if (GetString(i).Lower().Matches(st))
                    return (int)i ;
            }
        }

    }
    else
    {
        Str255 s1 , s2 ;

        wxMacStringToPascal( s , s2 ) ;

        for ( unsigned int i = 0 ; i < m_noItems ; ++ i )
        {
            wxMacStringToPascal( m_stringArray[i] , s1 ) ;

            if ( EqualString( s1 , s2 , bCase , false ) )
                return (int)i ;
        }
    }

    return wxNOT_FOUND;
}

void wxListBox::Clear()
{
    FreeData();
    m_noItems = 0;