propgrid.cpp

来自「这是一个GPS相关的程序」· C++ 代码 · 共 2,266 行 · 第 1/5 页

    return m_parent->GetParentState();
}


size_t wxPGProperty::GetChildCount() const
{
    int cc = GetParentingType();
    if ( cc == 0 ) return 0;
    return ((wxPGPropertyWithChildren*)this)->GetCount();
}


void wxPGProperty::ShowError( const wxString& msg )
{
    if ( !msg.length() )
        return;

#if wxUSE_STATUSBAR
    if ( !wxPGGlobalVars->m_offline )
    {
        wxPropertyGrid* pg = GetParentState()->m_pPropGrid;
        wxASSERT(pg);
        wxWindow* topWnd = ::wxGetTopLevelParent(pg);
        if ( topWnd )
        {
            wxFrame* pFrame = wxDynamicCast(topWnd,wxFrame);
            if ( pFrame )
            {
                wxStatusBar* pStatusBar = pFrame->GetStatusBar();
                if ( pStatusBar )
                {
                    pStatusBar->SetStatusText(msg);
                    return;
                }
            }
        }
    }
#endif
    ::wxLogError(msg);
}


wxPropertyGrid* wxPGProperty::GetGrid() const
{
    return GetParentState()->GetGrid();
}


void wxPGProperty::UpdateControl( wxWindow* primary )
{
    if ( primary )
        GetEditorClass()->UpdateControl(this,primary);
}


void wxPGProperty::DoSetValue( wxPGVariant )
{
    // Actually, this should never get called
    wxFAIL_MSG( wxT("must be overridden") );
}


// wxPGRootPropertyClass, at least, should make use of this.
wxPGVariant wxPGProperty::DoGetValue() const
{
    return wxPGVariant((long)0);
}


wxString wxPGProperty::GetValueAsString( int ) const
{
    wxFAIL_MSG( wxT("must be overridden") );
    return m_name;
}

wxVariant wxPGProperty::GetValueAsVariant() const
{
    // Return NULL variant for unspecified value
    //if ( HasFlag(wxPG_PROP_UNSPECIFIED) )
    //    return wxVariant();

    wxPGVariant value = DoGetValue();
    const wxPGValueType* typeClass = GetValueTypePtr();
    wxASSERT_MSG( typeClass, wxT("Did you forgot to use wxPG_INIT_REQUIRED_TYPE(T) in constructor?") );
    return typeClass->GenerateVariant(value,m_name);
}

bool wxPGProperty::SetValueFromString( const wxString&, int )
{
    wxFAIL_MSG( wxT("must be overridden") );
    return false;
}


bool wxPGProperty::SetValueFromInt( long, int )
{
    wxFAIL_MSG ( wxT("must be overridden") );
    return false;
}


wxSize wxPGProperty::GetImageSize() const
{
    if ( m_dataExt && m_dataExt->m_valueBitmap )
        return wxSize(m_dataExt->m_valueBitmap->GetWidth(),-1);

    return wxSize(0,0);
}


void wxPGProperty::OnCustomPaint( wxDC& dc,
                                  const wxRect& rect,
                                  wxPGPaintData& )
{
    wxCHECK_RET( m_dataExt, wxT("m_dataExt is mandatory") );

    wxBitmap* bmp = m_dataExt->m_valueBitmap;

    wxCHECK_RET( bmp && bmp->Ok(), wxT("invalid bitmap") );

    wxCHECK_RET( rect.x >= 0, wxT("unexpected measure call") );

    dc.DrawBitmap(*bmp,rect.x,rect.y);
}

const wxPGEditor* wxPGProperty::DoGetEditorClass() const
{
    return wxPG_EDITOR(TextCtrl);
}


#ifdef __WXPYTHON__
wxString wxPGProperty::GetEditor() const
{
    return wxEmptyString;
}
#endif

#ifdef __WXPYTHON__
wxString wxPGProperty::GetType() const
{
    return wxString();
}

const wxPGValueType* wxPGProperty::GetValueType() const
{
    wxString s = GetType();

    const wxPGValueType* p = wxPropertyContainerMethods::GetValueType(s);

    wxCHECK_MSG( p, wxPG_VALUETYPE(none),
                 wxT("GetType must return string that identifies a valid type") );

    return p;
}
#endif

#if wxPG_VALUETYPE_IS_STRING
const wxPGValueType* wxPGProperty::GetValueTypePtr() const
{
    return wxPropertyContainerMethods::GetValueTypeByName(GetValueType());
}
#endif


// Default extra property event handling - that is, none at all.
bool wxPGProperty::OnEvent( wxPropertyGrid*, wxWindow*, wxEvent& )
{
    return false;
}


void wxPGProperty::SetChoiceSelection( int newValue, const wxPGChoiceInfo& choiceInfo )
{
    // Changes value of a property with choices, but only
    // works if the value type is long or string.
    const wxPGValueType* vt = GetValueTypePtr();

    wxCHECK_RET( choiceInfo.m_choices, wxT("invalid choiceinfo") );

    if ( vt == wxPG_VALUETYPE_PTR(long) )
    {
        DoSetValue( (long) newValue );
    }
    else if ( vt == wxPG_VALUETYPE_PTR(wxString) )
    {
        DoSetValue( choiceInfo.m_choices->GetLabel(newValue) );
    }
}


int wxPGProperty::InsertChoice( const wxString& label, int index, int value )
{
    wxPropertyGrid* pg = GetGrid();

    wxPGChoiceInfo ci;
    ci.m_choices = (wxPGChoices*) NULL;
    int sel = GetChoiceInfo(&ci);

    if ( ci.m_choices )
    {
        int newSel = sel;

        if ( index < 0 )
            index = ci.m_choices->GetCount();

        if ( index <= sel )
            newSel++;

        ci.m_choices->Insert(label, index, value);

        if ( sel != newSel )
            SetChoiceSelection(newSel, ci);

        if ( this == wxPGIdToPtr(pg->GetSelection()) )
            GetEditorClass()->InsertItem(pg->GetPrimaryEditor(),label,index);

        return index;
    }

    return -1;
}


void wxPGProperty::DeleteChoice( int index )
{
    wxPropertyGrid* pg = GetGrid();

    wxPGChoiceInfo ci;
    ci.m_choices = (wxPGChoices*) NULL;
    int sel = GetChoiceInfo(&ci);

    if ( ci.m_choices )
    {
        int newSel = sel;

        // Adjust current value
        if ( sel == index )
        {
            SetFlag( wxPG_PROP_UNSPECIFIED );
            newSel = 0;
        }
        else if ( index < sel )
        {
            newSel--;
        }

        ci.m_choices->RemoveAt(index);

        if ( sel != newSel )
            SetChoiceSelection(newSel, ci);

        if ( this == wxPGIdToPtr(pg->GetSelection()) )
            GetEditorClass()->DeleteItem(pg->GetPrimaryEditor(), index);
    }
}


int wxPGProperty::GetChoiceInfo( wxPGChoiceInfo* )
{
    return 0;
}


void wxPGProperty::SetAttribute( int, wxVariant& )
{
}


#if wxUSE_VALIDATORS
wxValidator* wxPGProperty::DoGetValidator() const
{
    return (wxValidator*) NULL;
}
#endif


bool wxPGProperty::SetChoices( wxPGChoices& choices )
{
    wxPGChoiceInfo ci;
    ci.m_choices = (wxPGChoices*) NULL;

    // Unref existing
    GetChoiceInfo(&ci);
    if ( ci.m_choices )
    {
        ci.m_choices->Assign(choices);

        // This may be needed to trigger some initialization
        // (but don't do it if property is somewhat uninitialized)
        if ( m_parent )
            DoSetValue(GetValueTypePtr()->GetDefaultValue());

        return true;
    }
    return false;
}


const wxPGEditor* wxPGProperty::GetEditorClass() const
{
    if ( !m_dataExt || !m_dataExt->m_customEditor )
    {
#ifdef __WXPYTHON__
        wxString editorName = GetEditor();
        if ( editorName.length() )
            return wxPropertyContainerMethods::GetEditorByName(editorName);
#endif
        return DoGetEditorClass();
    }

    return m_dataExt->m_customEditor;
}


bool wxPGProperty::IsKindOf( wxPGPropertyClassInfo& info )
{
    const wxPGPropertyClassInfo* ownInfo = GetClassInfo();

    do
    {
        if ( ownInfo == &info )
            return true;

        ownInfo = ownInfo->m_baseInfo;
    } while ( ownInfo );

    return false;
}


// Privatizes set of choices
void wxPGProperty::SetChoicesExclusive()
{
    wxPGChoiceInfo ci;
    ci.m_choices = (wxPGChoices*) NULL;

    GetChoiceInfo(&ci);
    if ( ci.m_choices )
        ci.m_choices->SetExclusive();
}


bool wxPGProperty::PrepareValueForDialogEditing( wxPropertyGrid* propGrid )
{
    wxWindow* primary = propGrid->GetEditorControl();
    if ( primary && propGrid->IsEditorsValueModified() )
    {
         GetEditorClass()->CopyValueFromControl( this, primary );
         return true;
    }
    else if ( m_flags & wxPG_PROP_UNSPECIFIED )
    {
        // Set default value in case it was unspecified
        DoSetValue(GetValueTypePtr()->GetDefaultValue());
    }
    return false;
}


bool wxPGProperty::RecreateEditor()
{
    wxPropertyGrid* pg = GetGrid();
    wxASSERT(pg);

    wxPGProperty* selected = pg->GetSelection();
    if ( this == selected )
    {
        pg->DoSelectProperty(this, wxPG_SEL_FORCE);
        return true;
    }
    return false;
}


bool wxPGProperty::EnsureDataExt()
{
    if ( !m_dataExt )
    {
        m_dataExt = new wxPGPropertyDataExt();
        return true;
    }
    return false;
}


void wxPGProperty::SetValueImage( wxBitmap& bmp )
{
    EnsureDataExt();

    delete m_dataExt->m_valueBitmap;

    if ( &bmp && bmp.Ok() )
    {
        // Resize the image
        wxSize maxSz = GetGrid()->GetImageSize();
        wxSize imSz(bmp.GetWidth(),bmp.GetHeight());

        if ( imSz.x != maxSz.x || imSz.y != maxSz.y )
        {
            // Create a memory DC
            wxBitmap* bmpNew = new wxBitmap(maxSz.x,maxSz.y,bmp.GetDepth());

            wxMemoryDC dc;
            dc.SelectObject(*bmpNew);

            // Scale
            // FIXME: This is ugly - use image or wait for scaling patch.
            double scaleX = (double)maxSz.x / (double)imSz.x;
            double scaleY = (double)maxSz.y / (double)imSz.y;

            dc.SetUserScale(scaleX,scaleY);

            dc.DrawBitmap( bmp, 0, 0 );

            m_dataExt->m_valueBitmap = bmpNew;
        }
        else
            m_dataExt->m_valueBitmap = new wxBitmap(bmp);

        m_flags |= wxPG_PROP_CUSTOMIMAGE;
    }
    else
    {
        m_dataExt->m_valueBitmap = (wxBitmap*) NULL;
        m_flags &= ~(wxPG_PROP_CUSTOMIMAGE);
    }
}


wxPGProperty* wxPGProperty::GetMainParent() const
{
    const wxPGProperty* curChild = this;
    const wxPGPropertyWithChildren* curParent = m_parent;

    while ( curParent->m_parentingType < 0 )
    {
        curChild = curParent;
        curParent = curParent->m_parent;
    }

    return (wxPGProperty*) curChild;
}


const wxPGProperty* wxPGProperty::GetLastVisibleSubItem() const
{
    //
    // Returns last visible sub-item, recursively.

    if ( GetParentingType() == PT_NONE )
        return this;

    const wxPGPropertyWithChildren* pwc = (wxPGPropertyWithChildren*) this;