textctrl.cpp

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

  {
    *from = (**((TEHandle) m_macTE)).selStart;
    *to = (**((TEHandle) m_macTE)).selEnd;
   }
   else
   {
        TXNGetSelection( (TXNObject) m_macTXN , (TXNOffset*) from , (TXNOffset*) to ) ;
   }
}

void wxTextCtrl::SetValue(const wxString& str)
{
    wxString st = str ;
    wxMacConvertNewlines13To10( &st ) ;
    if ( !m_macUsesTXN )
    {
        wxCharBuffer text =  st.mb_str(wxConvLocal) ;
        ::SetControlData( (ControlHandle) m_macControl, 0, ( m_windowStyle & wxTE_PASSWORD ) ? kControlEditTextPasswordTag : kControlEditTextTextTag , strlen(text) , text ) ;
    }
    else
    {
        bool formerEditable = m_editable ;
        if ( !formerEditable )
            SetEditable(true) ;
        SetTXNData( (TXNObject) m_macTXN , st , kTXNStartOffset, kTXNEndOffset ) ;
        TXNSetSelection( (TXNObject) m_macTXN, 0, 0);
        TXNShowSelection( (TXNObject) m_macTXN, kTXNShowStart);
        if ( !formerEditable )
            SetEditable(formerEditable) ;
    }
    MacRedrawControl() ;
}

void wxTextCtrl::SetMaxLength(unsigned long len)
{
    m_maxLength = len ;
}

bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
{
    if ( m_macUsesTXN )
    {
        bool formerEditable = m_editable ;
        if ( !formerEditable )
            SetEditable(true) ;
        TXNTypeAttributes typeAttr[4] ;
        Str255 fontName = "\pMonaco" ;
        SInt16 fontSize = 12 ;
        Style fontStyle = normal ;
        RGBColor color ;
        int attrCounter = 0 ;
        if ( style.HasFont() )
        {
            const wxFont &font = style.GetFont() ;
            wxMacStringToPascal( font.GetFaceName() , fontName ) ;
            fontSize = font.GetPointSize() ;
            if ( font.GetUnderlined() )
                fontStyle |= underline ;
            if ( font.GetWeight() == wxBOLD )
                fontStyle |= bold ;
            if ( font.GetStyle() == wxITALIC )
                fontStyle |= italic ;

            typeAttr[attrCounter].tag = kTXNQDFontNameAttribute ;
            typeAttr[attrCounter].size = kTXNQDFontNameAttributeSize ;
            typeAttr[attrCounter].data.dataPtr = (void*) fontName ;
            typeAttr[attrCounter+1].tag = kTXNQDFontSizeAttribute ;
            typeAttr[attrCounter+1].size = kTXNFontSizeAttributeSize ;
            typeAttr[attrCounter+1].data.dataValue =  (fontSize << 16) ;
            typeAttr[attrCounter+2].tag = kTXNQDFontStyleAttribute ;
            typeAttr[attrCounter+2].size = kTXNQDFontStyleAttributeSize ;
            typeAttr[attrCounter+2].data.dataValue = fontStyle ;
            attrCounter += 3 ;

        }
        if ( style.HasTextColour() )
        {
            typeAttr[attrCounter].tag = kTXNQDFontColorAttribute ;
            typeAttr[attrCounter].size = kTXNQDFontColorAttributeSize ;
            typeAttr[attrCounter].data.dataPtr = (void*) &color ;
            color = MAC_WXCOLORREF(style.GetTextColour().GetPixel()) ;
            attrCounter += 1 ;
        }

        if ( attrCounter > 0 )
        {
#ifdef __WXDEBUG__
            OSStatus status =
#endif // __WXDEBUG__
                TXNSetTypeAttributes ((TXNObject)m_macTXN, attrCounter , typeAttr, start,end);
            wxASSERT_MSG( status == noErr , wxT("Couldn't set text attributes") ) ;
        }
        if ( !formerEditable )
            SetEditable(formerEditable) ;
    }
    return true ;
}

bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
{
    wxTextCtrlBase::SetDefaultStyle( style ) ;
    SetStyle( kTXNUseCurrentSelection , kTXNUseCurrentSelection , GetDefaultStyle() ) ;
    return true ;
}

// Clipboard operations
void wxTextCtrl::Copy()
{
    if (CanCopy())
    {
      if ( !m_macUsesTXN )
      {
            TECopy( ((TEHandle) m_macTE) ) ;
            ClearCurrentScrap();
            TEToScrap() ;
            MacRedrawControl() ;
        }
        else
        {
            ClearCurrentScrap();
            TXNCopy((TXNObject)m_macTXN);
            TXNConvertToPublicScrap();
        }
    }
}

void wxTextCtrl::Cut()
{
    if (CanCut())
    {
        if ( !m_macUsesTXN )
        {
            TECut( ((TEHandle) m_macTE) ) ;
            ClearCurrentScrap();
            TEToScrap() ;
            MacRedrawControl() ;
        }
        else
        {
            ClearCurrentScrap();
            TXNCut((TXNObject)m_macTXN);
            TXNConvertToPublicScrap();
        }
        wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, m_windowId);
        event.SetEventObject( this );
        GetEventHandler()->ProcessEvent(event);
      }
}

void wxTextCtrl::Paste()
{
    if (CanPaste())
    {
        if ( !m_macUsesTXN )
        {
            TEFromScrap() ;
            TEPaste( (TEHandle) m_macTE ) ;
            MacRedrawControl() ;
        }
        else
        {
            TXNConvertFromPublicScrap();
            TXNPaste((TXNObject)m_macTXN);
            SetStyle( kTXNUseCurrentSelection , kTXNUseCurrentSelection , GetDefaultStyle() ) ;
        }
        wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, m_windowId);
        event.SetEventObject( this );
        GetEventHandler()->ProcessEvent(event);
    }
}

bool wxTextCtrl::CanCopy() const
{
    // Can copy if there's a selection
    long from, to;
    GetSelection(& from, & to);
    return (from != to);
}

bool wxTextCtrl::CanCut() const
{
    if ( !IsEditable() )
    {
        return false ;
    }
    // Can cut if there's a selection
    long from, to;
    GetSelection(& from, & to);
    return (from != to);
}

bool wxTextCtrl::CanPaste() const
{
    if (!IsEditable())
        return false;

#if TARGET_CARBON
    OSStatus err = noErr;
    ScrapRef scrapRef;

    err = GetCurrentScrap( &scrapRef );
    if ( err != noTypeErr && err != memFullErr )
    {
        ScrapFlavorFlags    flavorFlags;
        Size                byteCount;

        if (( err = GetScrapFlavorFlags( scrapRef, 'TEXT', &flavorFlags )) == noErr)
        {
            if (( err = GetScrapFlavorSize( scrapRef, 'TEXT', &byteCount )) == noErr)
            {
                return true ;
            }
        }
    }
    return false;

#else
    long offset ;
    if ( GetScrap( NULL , 'TEXT' , &offset ) > 0 )
    {
        return true ;
    }
#endif
    return false ;
}

void wxTextCtrl::SetEditable(bool editable)
{
    if ( editable != m_editable )
    {
        m_editable = editable ;
        if ( !m_macUsesTXN )
        {
            if ( editable )
                UMAActivateControl( (ControlHandle) m_macControl ) ;
            else
                UMADeactivateControl((ControlHandle)  m_macControl ) ;
        }
        else
        {
            TXNControlTag tag[] = { kTXNIOPrivilegesTag } ;
            TXNControlData data[] = { { editable ? kTXNReadWrite : kTXNReadOnly } } ;
            TXNSetTXNObjectControls( (TXNObject) m_macTXN , false , sizeof(tag) / sizeof (TXNControlTag) , tag , data ) ;
        }
    }
}

void wxTextCtrl::SetInsertionPoint(long pos)
{
    SetSelection( pos , pos ) ;
}

void wxTextCtrl::SetInsertionPointEnd()
{
    wxTextPos pos = GetLastPosition();
    SetInsertionPoint(pos);
}

long wxTextCtrl::GetInsertionPoint() const
{
    long begin,end ;
    GetSelection( &begin , &end ) ;
    return begin ;
}

wxTextPos wxTextCtrl::GetLastPosition() const
{
    if ( !m_macUsesTXN )
    {
        return (**((TEHandle) m_macTE)).teLength ;
    }
    else
    {
        Handle theText ;
        long actualsize ;
        OSErr err = TXNGetDataEncoded( (TXNObject) m_macTXN, kTXNStartOffset, kTXNEndOffset, &theText , kTXNTextData );
        /* all done */
        if ( err )
        {
            actualsize = 0 ;
        }
        else
        {
            actualsize = GetHandleSize( theText ) ;
            DisposeHandle( theText ) ;
        }
        return actualsize ;
    }
}

void wxTextCtrl::Replace(long from, long to, const wxString& str)
{
    wxString value = str ;
    wxMacConvertNewlines13To10( &value ) ;
    if ( !m_macUsesTXN )
    {
        ControlEditTextSelectionRec selection ;

        selection.selStart = from ;
        selection.selEnd = to ;
        ::SetControlData((ControlHandle)  m_macControl , 0, kControlEditTextSelectionTag , sizeof( selection ) , (char*) &selection ) ;
        TESetSelect( from , to  , ((TEHandle) m_macTE) ) ;
        TEDelete( ((TEHandle) m_macTE) ) ;
        TEInsert( value , value.length() , ((TEHandle) m_macTE) ) ;
    }
    else
    {
        bool formerEditable = m_editable ;
        if ( !formerEditable )
            SetEditable(true) ;
        TXNSetSelection( ((TXNObject) m_macTXN) , from , to ) ;
        TXNClear( ((TXNObject) m_macTXN) ) ;
        SetTXNData( (TXNObject) m_macTXN , str , kTXNUseCurrentSelection, kTXNUseCurrentSelection ) ;
        if ( !formerEditable )
            SetEditable( formerEditable ) ;
    }
    Refresh() ;
}

void wxTextCtrl::Remove(long from, long to)
{
    if ( !m_macUsesTXN )
    {
        ControlEditTextSelectionRec selection ;

        selection.selStart = from ;
        selection.selEnd = to ;
        ::SetControlData( (ControlHandle) m_macControl , 0, kControlEditTextSelectionTag , sizeof( selection ) , (char*) &selection ) ;
        TEDelete( ((TEHandle) m_macTE) ) ;
    }
    else
    {
        bool formerEditable = m_editable ;
        if ( !formerEditable )
            SetEditable(true) ;
        TXNSetSelection( ((TXNObject) m_macTXN) , from , to ) ;
        TXNClear( ((TXNObject) m_macTXN) ) ;
        if ( !formerEditable )
            SetEditable( formerEditable ) ;
    }
    Refresh() ;
}

void wxTextCtrl::SetSelection(long from, long to)
{
    if ( !m_macUsesTXN )
    {
        ControlEditTextSelectionRec selection ;
        if ((from == -1) && (to == -1))
        {
            selection.selStart = 0 ;
            selection.selEnd = 32767 ;
        }
        else
        {
            selection.selStart = from ;
            selection.selEnd = to ;
        }

        TESetSelect( selection.selStart , selection.selEnd , ((TEHandle) m_macTE) ) ;
        ::SetControlData((ControlHandle)  m_macControl , 0, kControlEditTextSelectionTag , sizeof( selection ) , (char*) &selection ) ;
    }
    else
    {
        STPTextPaneVars **tpvars;
        /* set up our locals */
        tpvars = (STPTextPaneVars **) GetControlReference((ControlHandle) m_macControl);
        /* and our drawing environment as the operation
        may force a redraw in the text area. */
        SetPort((**tpvars).fDrawingEnvironment);
        /* change the selection */
        if ((from == -1) && (to == -1))
            TXNSelectAll((TXNObject) m_macTXN);
        else
            TXNSetSelection( (**tpvars).fTXNRec, from, to);
        TXNShowSelection( (TXNObject) m_macTXN, kTXNShowStart);
    }
}

void wxTextCtrl::WriteText(const wxString& str)
{
    wxString st = str ;
    wxMacConvertNewlines13To10( &st ) ;
    if ( !m_macUsesTXN )
    {
        wxCharBuffer text =  st.mb_str(wxConvLocal) ;
        TEInsert( text , strlen(text) , ((TEHandle) m_macTE) ) ;
    }
    else
    {
        bool formerEditable = m_editable ;
        if ( !formerEditable )
            SetEditable(true) ;
        long start , end , dummy ;
        GetSelection( &start , &dummy ) ;
        SetTXNData( (TXNObject) m_macTXN , st , kTXNUseCurrentSelection, kTXNUseCurrentSelection ) ;
        GetSelection( &dummy , &end ) ;
        SetStyle( start , end , GetDefaultStyle() ) ;
        if ( !formerEditable )
            SetEditable( formerEditable ) ;
    }
    MacRedrawControl() ;
}

void wxTextCtrl::AppendText(const wxString& text)
{
    SetInsertionPointEnd();
    WriteText(text);
}

void wxTextCtrl::Clear()
{
    if ( !m_macUsesTXN )
    {
        ::SetControlData((ControlHandle)  m_macControl, 0, ( m_windowStyle & wxTE_PASSWORD ) ? kControlEditTextPasswordTag : kControlEditTextTextTag , 0 , (char*) ((const char*)NULL) ) ;
    }
    else
    {
        TXNSetSelection( (TXNObject)m_macTXN , kTXNStartOffset , kTXNEndOffset ) ;
        TXNClear((TXNObject)m_macTXN);
    }
    Refresh() ;
}

bool wxTextCtrl::IsModified() const
{
    return m_dirty;
}

bool wxTextCtrl::IsEditable() const
{
    return IsEnabled() && m_editable ;
}

bool wxTextCtrl::AcceptsFocus() const
{
    // we don't want focus if we can't be edited
    return /*IsEditable() && */ wxControl::AcceptsFocus();
}

wxSize wxTextCtrl::DoGetBestSize() const
{
    int wText = 100 ;

    int hText;
    if ( m_macUsesTXN )
    {
        hText = 17 ;
    }