qwidgetfactory.cpp

Linux下的基于X11的图形开发环境。

	    break;
	default:
	    return 0;
	}
    }
    l->setAlignment( align );
    l->setMargin( margin );
    l->setSpacing( spacing );
    return l;
}

QWidgetFactory::LayoutType QWidgetFactory::layoutType( QLayout *layout ) const
{
    if ( layout->inherits( "QHBoxLayout" ) )
	return HBox;
    else if ( layout->inherits( "QVBoxLayout" ) )
	return VBox;
    else if ( layout->inherits( "QGridLayout" ) )
	return Grid;
    return NoLayout;
}

void QWidgetFactory::setProperty( QObject* obj, const QString &prop,
				  QVariant value )
{
    int offset = obj->metaObject()->findProperty( prop, TRUE );

    if ( offset != -1 ) {
	if ( prop == "geometry" && obj == toplevel ) {
	    toplevel->resize( value.toRect().size() );
	} else if ( prop == "accel" ) {
	    obj->setProperty( prop, value.toKeySequence() );
	} else {
	    if ( value.type() == QVariant::String ||
		 value.type() == QVariant::CString ) {
		const QMetaProperty *metaProp =
			obj->metaObject()->property( offset, TRUE );
		if ( metaProp != 0 && metaProp->isEnumType() ) {
		    if ( metaProp->isSetType() ) {
			QStrList flagsCStr;
			QStringList flagsStr =
			    QStringList::split( '|', value.asString() );
			QStringList::ConstIterator f = flagsStr.begin();
			while ( f != flagsStr.end() ) {
			    flagsCStr.append( *f );
			    ++f;
			}
			value = QVariant( metaProp->keysToValue(flagsCStr) );
		    } else {
			QCString key = value.toCString();
			value = QVariant( metaProp->keyToValue(key) );
		    }
		}
	    }
	    obj->setProperty( prop, value );
	}
    } else {
	if ( obj->isWidgetType() ) {
	    if ( prop == "toolTip" ) {
		if ( !value.toString().isEmpty() )
		    QToolTip::add( (QWidget*)obj, value.toString() );
	    } else if ( prop == "whatsThis" ) {
		if ( !value.toString().isEmpty() )
		    QWhatsThis::add( (QWidget*)obj, value.toString() );
	    } else if ( prop == "buddy" ) {
		buddies.insert( obj->name(), value.toCString() );
	    } else if ( prop == "buttonGroupId" ) {
		if ( obj->inherits( "QButton" ) && obj->parent()->inherits( "QButtonGroup" ) )
		    ( (QButtonGroup*)obj->parent() )->insert( (QButton*)obj, value.toInt() );
#ifndef QT_NO_SQL
	    } else if ( prop == "database" && !obj->inherits( "QDataView" )
		 && !obj->inherits( "QDataBrowser" ) ) {
		const QStringList& lst = value.asStringList();
		if ( lst.count() > 2 ) {
		    if ( dbControls )
			dbControls->insert( obj->name(), lst[ 2 ] );
		} else if ( lst.count() == 2 ) {
		    dbTables.insert( obj->name(), lst );
		}
	    } else if ( prop == "database" ) {
		const QStringList& lst = value.asStringList();
		if ( lst.count() == 2 && obj->inherits( "QWidget" ) ) {
		    SqlWidgetConnection conn( lst[ 0 ], lst[ 1 ] );
		    sqlWidgetConnections.insert( (QWidget*)obj, conn );
		    dbControls = conn.dbControls;
		}
#endif
	    } else if ( prop == "frameworkCode" ) {
		if ( value.isValid() && !value.toBool() )
		    noDatabaseWidgets << obj->name();
	    }
	}
    }
}

void QWidgetFactory::setProperty( QObject* widget, const QString &prop, const QDomElement &e )
{
    QString comment;
    QVariant value( DomTool::elementToVariant( e, QVariant(), comment ) );

    if ( e.tagName() == "string" ) {
	value = translate( value.asString().utf8(), comment.utf8() );
    } else if ( e.tagName() == "pixmap" ) {
	QPixmap pix = loadPixmap( value.toString() );
	if ( !pix.isNull() )
	    value = pix;
    } else if ( e.tagName() == "iconset" ) {
	QPixmap pix = loadPixmap( value.toString() );
	if ( !pix.isNull() )
	    value = QIconSet( pix );
    } else if ( e.tagName() == "image" ) {
	value = loadFromCollection( value.toString() );
    } else if ( e.tagName() == "palette" ) {
	QDomElement n = e.firstChild().toElement();
	QPalette p;
	while ( !n.isNull() ) {
	    QColorGroup cg;
	    if ( n.tagName() == "active" ) {
		cg = loadColorGroup( n );
		p.setActive( cg );
	    } else if ( n.tagName() == "inactive" ) {
		cg = loadColorGroup( n );
		p.setInactive( cg );
	    } else if ( n.tagName() == "disabled" ) {
		cg = loadColorGroup( n );
		p.setDisabled( cg );
	    }
	    n = n.nextSibling().toElement();
	}
	value = p;
    }
    setProperty( widget, prop, value );
}

void QWidgetFactory::createSpacer( const QDomElement &e, QLayout *layout )
{
    QDomElement n = e.firstChild().toElement();
    int row = e.attribute( "row" ).toInt();
    int col = e.attribute( "column" ).toInt();
    int rowspan = e.attribute( "rowspan" ).toInt();
    int colspan = e.attribute( "colspan" ).toInt();

    Qt::Orientation orient = Qt::Horizontal;
    int w = 0, h = 0;
    QSizePolicy::SizeType sizeType = QSizePolicy::Preferred;
    while ( !n.isNull() ) {
	if ( n.tagName() == "property" ) {
	    QString prop = n.attribute( "name" );
	    if ( prop == "orientation" ) {
		if ( n.firstChild().firstChild().toText().data() == "Horizontal" )
		    orient = Qt::Horizontal;
		else
		    orient = Qt::Vertical;
	    } else if ( prop == "sizeType" ) {
		sizeType = stringToSizeType( n.firstChild().firstChild().toText().data() );
	    } else if ( prop == "sizeHint" ) {
		w = n.firstChild().firstChild().firstChild().toText().data().toInt();
		h = n.firstChild().firstChild().nextSibling().firstChild().toText().data().toInt();
	    }
	}
	n = n.nextSibling().toElement();
    }

    if ( rowspan < 1 )
	rowspan = 1;
    if ( colspan < 1 )
	colspan = 1;
    QSpacerItem *item = new QSpacerItem( w, h, orient == Qt::Horizontal ? sizeType : QSizePolicy::Minimum,
					 orient == Qt::Vertical ? sizeType : QSizePolicy::Minimum );
    if ( layout ) {
	if ( layout->inherits( "QBoxLayout" ) )
	    ( (QBoxLayout*)layout )->addItem( item );
	else
	    ( (QGridLayout*)layout )->addMultiCell( item, row, row + rowspan - 1, col, col + colspan - 1,
						    orient == Qt::Horizontal ? Qt::AlignVCenter : Qt::AlignHCenter );
    }
}

static QImage loadImageData( QDomElement &n2 )
{
    QString format = n2.attribute( "format", "PNG" );
    QString hex = n2.firstChild().toText().data();
    int n = hex.length() / 2;
    QByteArray data( n );
    for ( int i = 0; i < n; i++ )
	data[i] = (char) hex.mid( 2 * i, 2 ).toUInt( 0, 16 );
    return loadImageData( format, n2.attribute("length").toULong(), data );
}

void QWidgetFactory::loadImageCollection( const QDomElement &e )
{
    QDomElement n = e.firstChild().toElement();
    while ( !n.isNull() ) {
	if ( n.tagName() == "image" ) {
	    Image img;
	    img.name =  n.attribute( "name" );
	    QDomElement n2 = n.firstChild().toElement();
	    while ( !n2.isNull() ) {
		if ( n2.tagName() == "data" )
		    img.img = loadImageData( n2 );
		n2 = n2.nextSibling().toElement();
	    }
	    images.append( img );
	    n = n.nextSibling().toElement();
	}
    }
}

QImage QWidgetFactory::loadFromCollection( const QString &name )
{
    QValueList<Image>::Iterator it = images.begin();
    for ( ; it != images.end(); ++it ) {
	if ( ( *it ).name == name )
	    return ( *it ).img;
    }
    return QImage();
}

QPixmap QWidgetFactory::loadPixmap( const QString& name )
{
    QPixmap pix;
    if ( usePixmapCollection ) {
	const QMimeSource *m = QMimeSourceFactory::defaultFactory()->data( name );
	if ( m )
	    QImageDrag::decode( m, pix );
    } else {
	pix.convertFromImage( loadFromCollection(name) );
    }
    return pix;
}

QPixmap QWidgetFactory::loadPixmap( const QDomElement &e )
{
    return loadPixmap( e.firstChild().toText().data() );
}

QColorGroup QWidgetFactory::loadColorGroup( const QDomElement &e )
{
    QColorGroup cg;
    int r = -1;
    QDomElement n = e.firstChild().toElement();
    QColor col;
    while ( !n.isNull() ) {
	if ( n.tagName() == "color" ) {
	    r++;
	    cg.setColor( (QColorGroup::ColorRole)r, (col = DomTool::readColor( n ) ) );
	} else if ( n.tagName() == "pixmap" ) {
	    QPixmap pix = loadPixmap( n );
	    cg.setBrush( (QColorGroup::ColorRole)r, QBrush( col, pix ) );
	}
	n = n.nextSibling().toElement();
    }
    return cg;
}

struct Connection
{
    QObject *sender, *receiver;
    QCString signal, slot;
    bool operator==( const Connection &c ) const {
	return sender == c.sender && receiver == c.receiver &&
	       signal == c.signal && slot == c.slot ;
    }

    Connection() : sender( 0 ), receiver( 0 ) { }
};

class NormalizeObject : public QObject
{
public:
    NormalizeObject() : QObject() {}
    static QCString normalizeSignalSlot( const char *signalSlot ) { return QObject::normalizeSignalSlot( signalSlot ); }
};

void QWidgetFactory::loadConnections( const QDomElement &e, QObject *connector )
{
    QDomElement n = e.firstChild().toElement();
    while ( !n.isNull() ) {
	if ( n.tagName() == "connection" ) {
	    QString lang = n.attribute( "language", "C++" );
	    QDomElement n2 = n.firstChild().toElement();
	    Connection conn;
	    while ( !n2.isNull() ) {
		if ( n2.tagName() == "sender" ) {
		    QString name = n2.firstChild().toText().data();
		    if ( name == "this" || qstrcmp( toplevel->name(), name ) == 0 ) {
			conn.sender = toplevel;
		    } else {
			if ( name == "this" )
			    name = toplevel->name();
			QObjectList *l = toplevel->queryList( 0, name, FALSE );
			if ( l ) {
			    if ( l->first() )
				conn.sender = l->first();
			    delete l;
			}
		    }
		    if ( !conn.sender )
			conn.sender = findAction( name );
		} else if ( n2.tagName() == "signal" ) {
		    conn.signal = n2.firstChild().toText().data();
		} else if ( n2.tagName() == "receiver" ) {
		    QString name = n2.firstChild().toText().data();
		    if ( name == "this" || qstrcmp( toplevel->name(), name ) == 0 ) {
			conn.receiver = toplevel;
		    } else {
			QObjectList *l = toplevel->queryList( 0, name, FALSE );
			if ( l ) {
			    if ( l->first() )
				conn.receiver = l->first();
			    delete l;
			}
		    }
		} else if ( n2.tagName() == "slot" ) {
		    conn.slot = n2.firstChild().toText().data();
		}
		n2 = n2.nextSibling().toElement();
	    }

	    conn.signal = NormalizeObject::normalizeSignalSlot( conn.signal );
	    conn.slot = NormalizeObject::normalizeSignalSlot( conn.slot );

	    QObject *sender = 0, *receiver = 0;
	    QObjectList *l = toplevel->queryList( 0, conn.sender->name(), FALSE );
	    if ( qstrcmp( conn.sender->name(), toplevel->name() ) == 0 ) {
		sender = toplevel;
	    } else {
		if ( !l || !l->first() ) {
		    delete l;
		    n = n.nextSibling().toElement();
		    continue;
		}
		sender = l->first();
		delete l;
	    }
	    if ( !sender )
		sender = findAction( conn.sender->name() );

	    if ( qstrcmp( conn.receiver->name(), toplevel->name() ) == 0 ) {
		receiver = toplevel;
	    } else {
		l = toplevel->queryList( 0, conn.receiver->name(), FALSE );
		if ( !l || !l->first() ) {
		    delete l;
		    n = n.nextSibling().toElement();
		    continue;
		}
		receiver = l->first();
		delete l;
	    }

	    QString s = "2""%1";
	    s = s.arg( conn.signal );
	    QString s2 = "1""%1";
	    s2 = s2.arg( conn.slot );

	    QStrList signalList = sender->metaObject()->signalNames( TRUE );
	    QStrList slotList = receiver->metaObject()->slotNames( TRUE );

	    // if this is a connection to a custom slot and we have a connector, try this as receiver
	    if ( slotList.find( conn.slot ) == -1 && receiver == toplevel && connector ) {
		slotList = connector->metaObject()->slotNames( TRUE );
		receiver = connector;
	    }

	    // avoid warnings
	    if ( signalList.find( conn.signal ) == -1 ||
		 slotList.find( conn.slot ) == -1 ) {
		n = n.nextSibling().toElement();
		continue;
	    }
	    QObject::connect( sender, s, receiver, s2 );
	}
	n = n.nextSibling().toElement();
    }
}

void QWidgetFactory::loadTabOrder( const QDomElement &e )
{
    QWidget *last = 0;
    QDomElement n = e.firstChild().toElement();
    while ( !n.isNull() ) {
	if ( n.tagName() == "tabstop" ) {
	    QString name = n.firstChild().toText().data();
	    QObjectList *l = toplevel->queryList( 0, name, FALSE );
	    if ( l ) {
		if ( l->first() ) {
		    QWidget *w = (QWidget*)l->first();
		    if ( last )
			toplevel->setTabOrder( last, w );
		    last = w;
		}
		delete l;
	    }
	}
	n = n.nextSibling().toElement();
    }
}

void QWidgetFactory::createListViewColumn( QListView *lv, const QString& txt,
					   const QPixmap& pix, bool clickable,
					   bool resizable )
{
    if ( pix.isNull() ) {
	lv->addColumn( txt );
    } else {
	lv->addColumn( pix, txt );
    }

    int i = lv->header()->count() - 1;
    if ( !pix.isNull() )
	lv->header()->setLabel( i, pix, txt );
    if ( !clickable )
	lv->header()->setClickEnabled( clickable, i );
    if ( !resizable )
	lv->header()->setResizeEnabled( resizable, i );
}

#ifndef QT_NO_TABLE
void QWidgetFactory::createTableColumnOrRow( QTable *table, const QString& txt,
					     const QPixmap& pix,
					     const QString& field, bool isRow )
{
#ifndef QT_NO_SQL
    bool isSql = table->inherits( "QDataTable" );
#endif
    if ( isRow )
	table->setNumRows( table->numRows() + 1 );
    else {
#ifndef QT_NO_SQL
	if ( !isSql )
#endif
	    table->setNumCols( table->numCols() + 1 );
    }

    QValueList<Field> fieldMap;
    if ( fieldMaps.find( table ) != fieldMaps.end() ) {
	fieldMap = *fieldMaps.find( table );
	fieldMaps.remove( table );
    }

    int i = isRow ? table->numRows() - 1 : table->numCols() - 1;
    QHeader *h = !isRow ? table->horizontalHeader() : table->verticalHeader();
    if ( !pix.isNull() ) {
#ifndef QT_NO_SQL
	if ( isSql )
	    ((QDataTable*)t