uic.cpp

Linux下的基于X11的图形开发环境。

    } else {
	if ( objClass == "QTable" ) {
	    s = indent + parent + "->setNumCols( " + parent + "->numCols() + 1 );\n";
	    if ( pix.isEmpty() )
		s += indent + parent + "->horizontalHeader()->setLabel( " + parent + "->numCols() - 1, "
		     + trcall( txt, com ) + " );\n";
	    else
		s += indent + parent + "->horizontalHeader()->setLabel( " + parent + "->numCols() - 1, "
		     + pix + ", " + trcall( txt, com ) + " );\n";
	} else if ( objClass == "QDataTable" ) {
	    if ( !txt.isEmpty() && !field.isEmpty() ) {
		if ( pix.isEmpty() )
		    out << indent << parent << "->addColumn( " << fixString( field ) << ", " << trcall( txt, com ) << " );" << endl;
		else
		    out << indent << parent << "->addColumn( " << fixString( field ) << ", " << trcall( txt, com ) << ", " << pix << " );" << endl;
	    }
	}
    }
    return s;
}

/*!
  Creates the implementation of a layout tag. Called from createObjectImpl().
 */
QString Uic::createLayoutImpl( const QDomElement &e, const QString& parentClass, const QString& parent, const QString& layout )
{
    QDomElement n;
    QString objClass, objName;
    objClass = e.tagName();

    QString qlayout = "QVBoxLayout";
    if ( objClass == "hbox" )
	qlayout = "QHBoxLayout";
    else if ( objClass == "grid" )
	qlayout = "QGridLayout";

    bool isGrid = e.tagName() == "grid" ;
    objName = registerObject( getLayoutName( e ) );
    layoutObjects += objName;

    QString margin = DomTool::readProperty( e, "margin", defMargin ).toString();
    QString spacing = DomTool::readProperty( e, "spacing", defSpacing ).toString();

    QString optcells;
    if ( isGrid )
	optcells = "1, 1, ";
    if ( (parentClass == "QGroupBox" || parentClass == "QButtonGroup") && layout.isEmpty() ) {
	// special case for group box
	out << indent << parent << "->setColumnLayout(0, Qt::Vertical );" << endl;
	out << indent << parent << "->layout()->setSpacing( " << spacing << " );" << endl;
	out << indent << parent << "->layout()->setMargin( " << margin << " );" << endl;
	out << indent << objName << " = new " << qlayout << "( " << parent << "->layout() );" << endl;
	out << indent << objName << "->setAlignment( Qt::AlignTop );" << endl;
    } else {
	out << indent << objName << " = new " << qlayout << "( ";
	if ( layout.isEmpty() )
	    out << parent;
	else {	
	    out << "0";
	    if ( !DomTool::hasProperty( e, "margin" ) )
		margin = "0";
	}
	out << ", " << optcells << margin << ", " << spacing << ", \"" << objName << "\"); " << endl;
    }

    if ( !isGrid ) {
	for ( n = e.firstChild().toElement(); !n.isNull(); n = n.nextSibling().toElement() ) {
	    if ( n.tagName() == "spacer" ) {
		QString child = createSpacerImpl( n, parentClass, parent, objName );
		out << indent << objName << "->addItem( " << child << " );" << endl;
	    } else if ( tags.contains( n.tagName() ) ) {
		QString child = createObjectImpl( n, parentClass, parent, objName );
		if ( isLayout( child ) )
		    out << indent << objName << "->addLayout( " << child << " );" << endl;
		else
		    out << indent << objName << "->addWidget( " << child << " );" << endl;
	    }
	}
    } else {
	for ( n = e.firstChild().toElement(); !n.isNull(); n = n.nextSibling().toElement() ) {
	    QDomElement ae = n;
	    int row = ae.attribute( "row" ).toInt();
	    int col = ae.attribute( "column" ).toInt();
	    int rowspan = ae.attribute( "rowspan" ).toInt();
	    int colspan = ae.attribute( "colspan" ).toInt();
	    if ( rowspan < 1 )
		rowspan = 1;
	    if ( colspan < 1 )
		colspan = 1;
	    if ( n.tagName() == "spacer" ) {
		QString child = createSpacerImpl( n, parentClass, parent, objName );
		if ( rowspan * colspan != 1 )
		    out << indent << objName << "->addMultiCell( " << child << ", "
			<< row << ", " << ( row + rowspan - 1 ) << ", " << col << ", " << ( col  + colspan - 1 ) << " );" << endl;
		else
		    out << indent << objName << "->addItem( " << child << ", "
			<< row << ", " << col << " );" << endl;
	    } else if ( tags.contains( n.tagName() ) ) {
		QString child = createObjectImpl( n, parentClass, parent, objName );
		out << endl;
		QString o = "Widget";
		if ( isLayout( child ) )
		    o = "Layout";
		if ( rowspan * colspan != 1 )
		    out << indent << objName << "->addMultiCell" << o << "( " << child << ", "
			<< row << ", " << ( row + rowspan - 1 ) << ", " << col << ", " << ( col  + colspan - 1 ) << " );" << endl;
		else
		    out << indent << objName << "->add" << o << "( " << child << ", "
			<< row << ", " << col << " );" << endl;
	    }
	}
    }

    return objName;
}



QString Uic::createSpacerImpl( const QDomElement &e, const QString& /*parentClass*/, const QString& /*parent*/, const QString& /*layout*/)
{
    QDomElement n;
    QString objClass, objName;
    objClass = e.tagName();
    objName = registerObject( "spacer" );

    QSize size = DomTool::readProperty( e, "sizeHint", QSize( 0, 0 ) ).toSize();
    QString sizeType = DomTool::readProperty( e, "sizeType", "Expanding" ).toString();
    bool isVspacer = DomTool::readProperty( e, "orientation", "Horizontal" ) == "Vertical";

    if ( sizeType != "Expanding" && sizeType != "MinimumExpanding" &&
	 DomTool::hasProperty( e, "geometry" ) ) { // compatibility Qt 2.2
	QRect geom = DomTool::readProperty( e, "geometry", QRect(0,0,0,0) ).toRect();
	size = geom.size();
    }

    if ( isVspacer )
	out << "    QSpacerItem* " << objName << " = new QSpacerItem( "
	    << size.width() << ", " << size.height()
	    << ", QSizePolicy::Minimum, QSizePolicy::" << sizeType << " );" << endl;
    else
	out << "    QSpacerItem* " << objName << " = new QSpacerItem( "
	    << size.width() << ", " << size.height()
	    << ", QSizePolicy::" << sizeType << ", QSizePolicy::Minimum );" << endl;

    return objName;
}

static const char* const ColorRole[] = {
    "Foreground", "Button", "Light", "Midlight", "Dark", "Mid",
    "Text", "BrightText", "ButtonText", "Base", "Background", "Shadow",
    "Highlight", "HighlightedText", "Link", "LinkVisited", 0
};


/*!
  Creates a colorgroup with name \a name from the color group \a cg
 */
void Uic::createColorGroupImpl( const QString& name, const QDomElement& e )
{
    QColorGroup cg;
    int r = -1;
    QDomElement n = e.firstChild().toElement();
    QString color;
    while ( !n.isNull() ) {
	if ( n.tagName() == "color" ) {
	    r++;
	    QColor col = DomTool::readColor( n );
	    color = "QColor( %1, %2, %3)";
	    color = color.arg( col.red() ).arg( col.green() ).arg( col.blue() );
	    if ( col == white )
		color = "white";
	    else if ( col == black )
	    color = "black";
	    if ( n.nextSibling().toElement().tagName() != "pixmap" ) {
		out << indent << name << ".setColor( QColorGroup::" << ColorRole[r] << ", " << color << " );" << endl;
	    }
	} else if ( n.tagName() == "pixmap" ) {
	    QString pixmap = n.firstChild().toText().data();
	    if ( !pixmapLoaderFunction.isEmpty() ) {
		pixmap.prepend( pixmapLoaderFunction + "( " + QString( externPixmaps ? "\"" : "" ) );
		pixmap.append( QString( externPixmaps ? "\"" : "" ) + " )" );
	    }
	    out << indent << name << ".setBrush( QColorGroup::"
		<< ColorRole[r] << ", QBrush( " << color << ", " << pixmap << " ) );" << endl;
	}
	n = n.nextSibling().toElement();
    }
}

/*!
  Auxiliary function to load a color group. The colorgroup must not
  contain pixmaps.
 */
QColorGroup Uic::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 ) ) );
	}
	n = n.nextSibling().toElement();
    }
    return cg;
}

/*!  Returns TRUE if the widget properties specify that it belongs to
  the database \a connection and \a table.
*/

bool Uic::isWidgetInTable( const QDomElement& e, const QString& connection, const QString& table )
{
    QString conn = getDatabaseInfo( e, "connection" );
    QString tab = getDatabaseInfo( e, "table" );
    if ( conn == connection && tab == table )
	return TRUE;
    return FALSE;
}

/*!
  Registers all database connections, cursors and forms.
*/

void Uic::registerDatabases( const QDomElement& e )
{
    QDomElement n;
    QDomNodeList nl;
    int i;
    nl = e.parentNode().toElement().elementsByTagName( "widget" );
    for ( i = 0; i < (int) nl.length(); ++i ) {
	n = nl.item(i).toElement();
	QString conn = getDatabaseInfo( n, "connection"  );
	QString tab = getDatabaseInfo( n, "table"  );
	QString fld = getDatabaseInfo( n, "field"  );
	if ( !conn.isNull() ) {
	    dbConnections += conn;
	    if ( !tab.isNull() ) {
		dbCursors[conn] += tab;
		if ( !fld.isNull() )
		    dbForms[conn] += tab;
	    }
	}
    }
}

/*!
  Registers an object with name \a name.

  The returned name is a valid variable identifier, as similar to \a
  name as possible and guaranteed to be unique within the form.

  \sa registeredName(), isObjectRegistered()
 */
QString Uic::registerObject( const QString& name )
{
    if ( objectNames.isEmpty() ) {
	// some temporary variables we need
	objectNames += "img";
	objectNames += "item";
	objectNames += "cg";
	objectNames += "pal";
    }

    QString result = name;
    int i;
    while ( ( i = result.find(' ' )) != -1  ) {
	result[i] = '_';
    }

    if ( objectNames.contains( result ) ) {
	int i = 2;
	while ( objectNames.contains( result + "_" + QString::number(i) ) )
	    i++;
	result += "_";
	result += QString::number(i);
    }
    objectNames += result;
    objectMapper.insert( name, result );
    return result;
}

/*!
  Returns the registered name for the original name \a name
  or \a name if \a name  wasn't registered.

  \sa registerObject(), isObjectRegistered()
 */
QString Uic::registeredName( const QString& name )
{
    if ( !objectMapper.contains( name ) )
	return name;
    return objectMapper[name];
}

/*!
  Returns whether the object \a name was registered yet or not.
 */
bool Uic::isObjectRegistered( const QString& name )
{
    return objectMapper.contains( name );
}


/*!
  Unifies the entries in stringlist \a list. Should really be a QStringList feature.
 */
QStringList Uic::unique( const QStringList& list )
{
    QStringList result;
    if ( list.isEmpty() )
	return result;
    QStringList l = list;
    l.sort();
    result += l.first();
    for ( QStringList::Iterator it = l.begin(); it != l.end(); ++it ) {
	if ( *it != result.last() )
	    result += *it;
    }
    return result;
}



/*!
  Creates an instance of class \a objClass, with parent \a parent and name \a objName
 */
QString Uic::createObjectInstance( const QString& objClass, const QString& parent, const QString& objName )
{

    if ( objClass.mid( 1 ) == "ComboBox" ) {
	return objClass + "( FALSE, " + parent + ", \"" + objName + "\" )";
    }
    return objClass + "( " + parent + ", \"" + objName + "\" )";
}

bool Uic::isLayout( const QString& name ) const
{
    return layoutObjects.contains( name );
}