qwidgetfactory.cpp

Linux下的基于X11的图形开发环境。

    QDomElement actions = e;
    while ( actions.tagName() != "actions" && !actions.isNull() )
	actions = actions.nextSibling().toElement();

    QDomElement toolbars = e;
    while ( toolbars.tagName() != "toolbars" && !toolbars.isNull() )
	toolbars = toolbars.nextSibling().toElement();

    QDomElement menubar = e;
    while ( menubar.tagName() != "menubar" && !menubar.isNull() )
	menubar = menubar.nextSibling().toElement();

    QDomElement functions = e;
    while ( functions.tagName() != "functions" && !functions.isNull() )
	functions = functions.nextSibling().toElement();

    QDomElement widget;
    while ( !e.isNull() ) {
	if ( e.tagName() == "class" ) {
	    d->translationContext = e.firstChild().toText().data();
	} else if ( e.tagName() == "widget" ) {
	    widget = e;
	} else if ( e.tagName() == "pixmapinproject" ) {
	    usePixmapCollection = TRUE;
	} else if ( e.tagName() == "layoutdefaults" ) {
	    defSpacing = e.attribute( "spacing", QString::number( defSpacing ) ).toInt();
	    defMargin = e.attribute( "margin", QString::number( defMargin ) ).toInt();
	}
	e = e.nextSibling().toElement();
    }

    if ( !imageCollection.isNull() )
	loadImageCollection( imageCollection );

    createWidgetInternal( widget, parent, 0, widget.attribute("class", "QWidget") );
    QWidget *w = toplevel;
    if ( !w )
	return 0;

    if ( !actions.isNull() )
	loadActions( actions );
    if ( !toolbars.isNull() )
	loadToolBars( toolbars );
    if ( !menubar.isNull() )
	loadMenuBar( menubar );

    if ( !connections.isNull() )
	loadConnections( connections, connector );
    if ( w && name && qstrlen( name ) > 0 )
	w->setName( name );

    if ( !tabOrder.isNull() )
	loadTabOrder( tabOrder );

#if 0
    if ( !functions.isNull() ) // compatibiliy with early 3.0 betas
	loadFunctions( functions );
#endif

    return w;
}

void QWidgetFactory::unpackUInt16( QDataStream& in, Q_UINT16& n )
{
    Q_UINT8 half;
    in >> half;
    if ( half == 255 ) {
	in >> n;
    } else {
	n = half;
    }
}

void QWidgetFactory::unpackUInt32( QDataStream& in, Q_UINT32& n )
{
    Q_UINT16 half;
    in >> half;
    if ( half == 65535 ) {
	in >> n;
    } else {
	n = half;
    }
}

void QWidgetFactory::unpackByteArray( QDataStream& in, QByteArray& array )
{
    Q_UINT32 size;
    unpackUInt32( in, size );
    array.resize( size );
    in.readRawBytes( array.data(), size );
}

void QWidgetFactory::unpackCString( const UibStrTable& strings, QDataStream& in,
				    QCString& cstr )
{
    Q_UINT32 n;
    unpackUInt32( in, n );
    cstr = strings.asCString( n );
}

void QWidgetFactory::unpackString( const UibStrTable& strings, QDataStream& in,
				   QString& str )
{
    Q_UINT32 n;
    unpackUInt32( in, n );
    str = strings.asString( n );
}

void QWidgetFactory::unpackStringSplit( const UibStrTable& strings,
					QDataStream& in, QString& str )
{
    QString remainder;
    unpackString( strings, in, str );
    unpackString( strings, in, remainder );
    str += remainder;
}

void QWidgetFactory::unpackVariant( const UibStrTable& strings, QDataStream& in,
				    QVariant& value )
{
    QString imageName;
    Q_UINT32 number;
    Q_UINT16 count;
    Q_UINT16 x;
    Q_UINT16 y;
    Q_UINT16 width;
    Q_UINT16 height;
    Q_UINT8 bit;
    Q_UINT8 type;

    in >> type;

    switch ( type ) {
    case QVariant::String:
	unpackString( strings, in, value.asString() );
	break;
    case QVariant::Pixmap:
	unpackString( strings, in, imageName );
	if ( imageName.isEmpty() ) {
	    value.asPixmap() = QPixmap();
	} else {
	    value.asPixmap() = loadPixmap( imageName );
	}
	break;
    case QVariant::Image:
	unpackString( strings, in, imageName );
	if ( imageName.isEmpty() ) {
	    value.asImage() = QImage();
	} else {
	    value.asImage() = loadFromCollection( imageName );
	}
	break;
    case QVariant::IconSet:
	unpackString( strings, in, imageName );
	if ( imageName.isEmpty() ) {
	    value.asIconSet() = QIconSet();
	} else {
	    value.asIconSet() = QIconSet( loadPixmap(imageName) );
	}
	break;
    case QVariant::StringList:
	unpackUInt16( in, count );
	while ( count-- ) {
	    QString str;
	    unpackString( strings, in, str );
	    value.asStringList().append( str );
	}
	break;
    case QVariant::Rect:
	unpackUInt16( in, x );
	unpackUInt16( in, y );
	unpackUInt16( in, width );
	unpackUInt16( in, height );
	value = QRect( x, y, width, height );
	break;
    case QVariant::Size:
	unpackUInt16( in, width );
	unpackUInt16( in, height );
	value = QSize( width, height );
	break;
    case QVariant::Color:
	in >> value.asColor();
	break;
    case QVariant::Point:
	unpackUInt16( in, x );
	unpackUInt16( in, y );
	value = QPoint( x, y );
	break;
    case QVariant::Int:
	unpackUInt32( in, number );
	value = (int) number;
	break;
    case QVariant::Bool:
	in >> bit;
	value = QVariant( bit != 0, 0 );
	break;
    case QVariant::Double:
	in >> value.asDouble();
	break;
    case QVariant::CString:
	unpackCString( strings, in, value.asCString() );
	break;
    case QVariant::Cursor:
	in >> value.asCursor();
	break;
    case QVariant::Date:
	in >> value.asDate();
	break;
    case QVariant::Time:
	in >> value.asTime();
	break;
    case QVariant::DateTime:
	in >> value.asDateTime();
	break;
    default:
	in >> value;
    }
}

void QWidgetFactory::inputSpacer( const UibStrTable& strings, QDataStream& in,
				  QLayout *parent )
{
    QCString name;
    QVariant value;
    QCString comment;
    QSizePolicy::SizeType sizeType = QSizePolicy::Preferred;
    bool vertical = FALSE;
    int w = 0;
    int h = 0;
    Q_UINT16 column = 0;
    Q_UINT16 row = 0;
    Q_UINT16 colspan = 1;
    Q_UINT16 rowspan = 1;
    Q_UINT8 objectTag;

    in >> objectTag;
    while ( !in.atEnd() && objectTag != Object_End ) {
	switch ( objectTag ) {
	case Object_GridCell:
	    unpackUInt16( in, column );
	    unpackUInt16( in, row );
	    unpackUInt16( in, colspan );
	    unpackUInt16( in, rowspan );
	    break;
	case Object_VariantProperty:
	    unpackCString( strings, in, name );
	    unpackVariant( strings, in, value );

	    if ( name == "orientation" ) {
		vertical = ( value == "Vertical" );
	    } else if ( name == "sizeHint" ) {
		w = value.toSize().width();
		h = value.toSize().height();
	    } else if ( name == "sizeType" ) {
		sizeType = stringToSizeType( value.toString() );
	    }
	    break;
	default:
	    qFatal( "Corrupt" );
	}
	in >> objectTag;
    }

    if ( parent != 0 ) {
	QSpacerItem *spacer;
	if ( vertical ) {
	    spacer = new QSpacerItem( w, h, QSizePolicy::Minimum, sizeType );
	} else {
	    spacer = new QSpacerItem( w, h, sizeType, QSizePolicy::Minimum );
	}

	if ( parent->inherits("QGridLayout") ) {
	    ((QGridLayout *) parent)->addMultiCell( spacer, row,
		    row + rowspan - 1, column, column + colspan - 1,
		    vertical ? Qt::AlignHCenter : Qt::AlignVCenter );
	} else {
	    parent->addItem( spacer );
	}
    }
}

void QWidgetFactory::inputColumnOrRow( const UibStrTable& strings,
				       QDataStream& in, QObject *parent,
				       bool isRow )
{
    QString text;
    QPixmap pixmap;
    QString field;
    bool clickable = TRUE;
    bool resizable = TRUE;

    QCString name;
    QVariant value;
    QCString comment;
    QString str;
    Q_UINT8 objectTag;

    in >> objectTag;
    while ( !in.atEnd() && objectTag != Object_End ) {
	switch ( objectTag ) {
	case Object_TextProperty:
	    unpackCString( strings, in, name );
	    unpackCString( strings, in, value.asCString() );
	    unpackCString( strings, in, comment );
	    str = translate( value.asCString(), comment );

	    if ( name == "field" ) {
		field = str;
	    } else if ( name == "text" ) {
		text = str;
	    }
	    break;
	case Object_VariantProperty:
	    unpackCString( strings, in, name );
	    unpackVariant( strings, in, value );

	    if ( name == "clickable" ) {
		clickable = value.toBool();
	    } else if ( name == "pixmap" ) {
		pixmap = value.asPixmap();
	    } else if ( name == "resizable" ) {
		resizable = value.toBool();
	    }
	    break;
	default:
	    qFatal( "Corrupt" );
	}
	in >> objectTag;
    }

    if ( parent != 0 ) {
	if ( parent->inherits("QListView") ) {
	    createListViewColumn( (QListView *) parent, text, pixmap, clickable,
				  resizable );
#ifndef QT_NO_TABLE
	} else if ( parent->inherits("QTable") ) {
	    createTableColumnOrRow( (QTable *) parent, text, pixmap, field,
				    isRow );
#endif
	}
    }
}

void QWidgetFactory::inputItem( const UibStrTable& strings, QDataStream& in,
				QObject *parent, QListViewItem *parentItem )
{
    QStringList texts;
    QValueList<QPixmap> pixmaps;
    QCString name;
    QVariant value;
    QCString comment;
    Q_UINT8 objectTag;

    QListView *listView = 0;
    if ( parent != 0 && parent->inherits("QListView") )
	parent = (QListView *) parent;
    QListViewItem *item = 0;
    if ( listView != 0 ) {
	if ( parentItem == 0 ) {
	    item = new QListViewItem( listView, d->lastItem );
	} else {
	    item = new QListViewItem( parentItem, d->lastItem );
	}
	d->lastItem = item;
    }

    in >> objectTag;
    while ( !in.atEnd() && objectTag != Object_End ) {
	switch ( objectTag ) {
	case Object_Item:
	    if ( listView != 0 )
		d->lastItem->setOpen( TRUE );
	    inputItem( strings, in, parent, item );
	    break;
	case Object_TextProperty:
	    unpackCString( strings, in, name );
	    unpackCString( strings, in, value.asCString() );
	    unpackCString( strings, in, comment );

	    if ( name == "text" )
		texts << translate( value.asCString(), comment );
	    break;
	case Object_VariantProperty:
	    unpackCString( strings, in, name );
	    unpackVariant( strings, in, value );

	    if ( name == "pixmap" )
		pixmaps << value.asPixmap();
	    break;
	default:
	    qFatal( "Corrupt" );
	}
	in >> objectTag;
    }

    if ( listView != 0 ) {
	int i = 0;
	QStringList::ConstIterator t = texts.begin();
	while ( t != texts.end() ) {
	    item->setText( i, *t );
	    ++i;
	    ++t;
	}

	int j = 0;
	QValueList<QPixmap>::ConstIterator p = pixmaps.begin();
	while ( p != pixmaps.end() ) {
	    item->setPixmap( j, *p );
	    ++j;
	    ++p;
	}
    } else {
	QString text = texts.last();
	QPixmap pixmap = pixmaps.last();

	if ( parent != 0 ) {
	    if ( parent->inherits("QComboBox") ||
		 parent->inherits("QListBox") ) {
		QListBox *listBox = (QListBox *) parent->qt_cast( "QListBox" );
		if ( listBox == 0 )
		    listBox = ((QComboBox *) parent)->listBox();

		if ( pixmap.isNull() ) {
		    (void) new QListBoxText( listBox, text );
		} else {
		    (void) new QListBoxPixmap( listBox, pixmap, text );
		}
    #ifndef QT_NO_ICONVIEW
	    } else if ( parent->inherits("QIconView") ) {
		(void) new QIconViewItem( (QIconView *) parent, text, pixmap );
    #endif
	    }
	}
    }
}

void QWidgetFactory::inputMenuItem( QObject **objects,
				    const UibStrTable& strings, QDataStream& in,
				    QMenuBar *menuBar )
{
    QCString name;
    QCString text;
    Q_UINT16 actionNo;
    Q_UINT8 objectTag;

    unpackCString( strings, in, name );
    unpackCString( strings, in, text );