object.cpp

Linux下的基于X11的图形开发环境。

/**********************************************************************
** Copyright (C) 2000 Trolltech AS.  All rights reserved.
**
** This file is part of Qt Designer.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact [e-mail] if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/

#include "uic.h"
#include "parser.h"
#include "domtool.h"
#include <qregexp.h>
#include <qsizepolicy.h>
#include <qstringlist.h>
#define NO_STATIC_COLORS
#include <globaldefs.h>

/*!
  Creates a declaration for the object given in \a e.

  Children are not traversed recursively.

  \sa createObjectImpl()
 */
void Uic::createObjectDecl( const QDomElement& e )
{
    if ( e.tagName() == "vbox" ) {
	out << "    QVBoxLayout* " << registerObject(getLayoutName(e) ) << ";" << endl;
    } else if ( e.tagName() == "hbox" ) {
	out << "    QHBoxLayout* " << registerObject(getLayoutName(e) ) << ";" << endl;
    } else if ( e.tagName() == "grid" ) {
	out << "    QGridLayout* " << registerObject(getLayoutName(e) ) << ";" << endl;
    } else {
	QString objClass = getClassName( e );
	if ( objClass.isEmpty() )
	    return;
	QString objName = getObjectName( e );
	if ( objName.isEmpty() )
	    return;
	// ignore QLayoutWidgets
	if ( objClass == "QLayoutWidget" )
	    return;
	// register the object and unify its name
	objName = registerObject( objName );
	if ( objClass == "Line" )
	    objClass = "QFrame";
	out << "    " << objClass << "* " << objName << ";" << endl;
    }
}


/*!
  Creates an implementation for the object given in \a e.

  Traverses recursively over all children.

  Returns the name of the generated child object.

  \sa createObjectDecl()
 */

static bool createdCentralWidget = FALSE;

QString Uic::createObjectImpl( const QDomElement &e, const QString& parentClass, const QString& par, const QString& layout )
{
    QString parent( par );
    if ( parent == "this" && isMainWindow ) {
	if ( !createdCentralWidget )
	    out << indent << "setCentralWidget( new QWidget( this, \"qt_central_widget\" ) );" << endl;
	createdCentralWidget = TRUE;
	parent = "centralWidget()";
    }
    QDomElement n;
    QString objClass, objName;
    int numItems = 0;
    int numColumns = 0;
    int numRows = 0;

    if ( layouts.contains( e.tagName() ) )
	return createLayoutImpl( e, parentClass, parent, layout );

    objClass = getClassName( e );
    if ( objClass.isEmpty() )
	return objName;
    objName = getObjectName( e );

    QString definedName = objName;
    bool isTmpObject = objName.isEmpty() || objClass == "QLayoutWidget";
    if ( isTmpObject ) {
	if ( objClass[0] == 'Q' )
	    objName = objClass.mid(1);
	else
	    objName = objClass.lower();
	objName.prepend( "private" );
    }

    bool isLine = objClass == "Line";
    if ( isLine )
	objClass = "QFrame";

    out << endl;
    if ( objClass == "QLayoutWidget" ) {
	if ( layout.isEmpty() ) {
	    // register the object and unify its name
	    objName = registerObject( objName );
	    out << "    QWidget* " << objName << " = new QWidget( " << parent << ", \"" << definedName << "\" );" << endl;
	} else {
	    // the layout widget is not necessary, hide it by creating its child in the parent
	    QString result;
	    for ( n = e.firstChild().toElement(); !n.isNull(); n = n.nextSibling().toElement() ) {
		if (tags.contains( n.tagName() ) )
		    result = createObjectImpl( n, parentClass, parent, layout );
	    }
	    return result;
	}
    } else if ( objClass != "QToolBar" && objClass != "QMenuBar" ) {
	// register the object and unify its name
	objName = registerObject( objName );
	out << "    ";
	if ( isTmpObject )
	    out << objClass << "* ";
	out << objName << " = new " << createObjectInstance( objClass, parent, objName ) << ";" << endl;
    }

    lastItem = "0";
    // set the properties and insert items
    bool hadFrameShadow = FALSE;
    for ( n = e.firstChild().toElement(); !n.isNull(); n = n.nextSibling().toElement() ) {
	if ( n.tagName() == "property" ) {
	    bool stdset = stdsetdef;
	    if ( n.hasAttribute( "stdset" ) )
		stdset = toBool( n.attribute( "stdset" ) );
	    QString prop = n.attribute( "name" );
	    if ( prop == "database" )
		continue;
	    QString value = setObjectProperty( objClass, objName, prop, n.firstChild().toElement(), stdset );
	    if ( value.isEmpty() )
		continue;
	    if ( prop == "name" )
		continue;
	    if ( isLine && prop == "frameShadow" )
		hadFrameShadow = TRUE;
	    if ( prop == "buddy" && value.startsWith("\"") && value.endsWith("\"") ) {
		buddies << Buddy( objName, value.mid(1, value.length() - 2 ) );
		continue;
	    }
	    if ( isLine && prop == "orientation" ) {
		prop = "frameShape";
		if ( value.right(10) == "Horizontal" )
		    value = "QFrame::HLine";
		else
		    value = "QFrame::VLine";
		if ( !hadFrameShadow ) {
		    prop = "frameStyle";
		    value += " | QFrame::Sunken";
		}
	    }
	    if ( prop == "buttonGroupId" ) {
		if ( parentClass == "QButtonGroup" )
		    out << indent << parent << "->insert( " << objName << ", " << value << " );" << endl;
		continue;
	    }
	    if ( prop == "frameworkCode" )
		continue;
	    if ( objClass == "QMultiLineEdit" &&
		 QRegExp("echoMode|hMargin|maxLength|maxLines|undoEnabled").exactMatch(prop) )
		continue;

	    QString call = objName + "->";
	    if ( stdset ) {
		call += mkStdSet( prop ) + "( ";
	    } else {
		call += "setProperty( \"" + prop + "\", ";
	    }
	    if ( prop == "accel" )
		call += "QKeySequence( " + value + " ) );";
	    else
		call += value + " );";

	    if ( n.firstChild().toElement().tagName() == "string" ||
		 prop == "currentItem" ) {
		trout << indent << call << endl;
	    } else {
		out << indent << call << endl;
	    }
	} else if ( n.tagName() == "item" ) {
	    QString call;
	    QString value;

	    if ( objClass.mid( 1 ) == "ListBox" ) {
		call = createListBoxItemImpl( n, objName );
		if ( !call.isEmpty() ) {
		    if ( numItems == 0 )
			trout << indent << objName << "->clear();" << endl;
		    trout << indent << call << endl;
		}
	    } else if ( objClass.mid( 1 ) == "ComboBox" ) {
		call = createListBoxItemImpl( n, objName, &value );
		if ( !call.isEmpty() ) {
		    if ( numItems == 0 )
			trout << indent << objName << "->clear();" << endl;
		    trout << indent << call << endl;
		}
	    } else if ( objClass.mid( 1 ) == "IconView" ) {
		call = createIconViewItemImpl( n, objName );
		if ( !call.isEmpty() ) {
		    if ( numItems == 0 )
			trout << indent << objName << "->clear();" << endl;
		    trout << indent << call << endl;
		}
	    } else if ( objClass.mid( 1 ) == "ListView" ) {
		call = createListViewItemImpl( n, objName, QString::null );
		if ( !call.isEmpty() ) {
		    if ( numItems == 0 )
			trout << indent << objName << "->clear();" << endl;
		    trout << call << endl;
		}
	    }
	    if ( !call.isEmpty() )
		numItems++;
	} else if ( n.tagName() == "column" || n.tagName() == "row" ) {
	    QString call;
	    QString value;

	    if ( objClass.mid( 1 ) == "ListView" ) {
		call = createListViewColumnImpl( n, objName, &value );
		if ( !call.isEmpty() ) {
		    out << call;
		    trout << indent << objName << "->header()->setLabel( "
			  << numColumns++ << ", " << value << " );\n";
		}
	    } else if ( objClass ==  "QTable" || objClass == "QDataTable" ) {
		bool isCols = ( n.tagName() == "column" );
		call = createTableRowColumnImpl( n, objName, &value );
		if ( !call.isEmpty() ) {
		    out << call;
		    trout << indent << objName << "->"
			  << ( isCols ? "horizontalHeader" : "verticalHeader" )
			  << "()->setLabel( "
			  << ( isCols ? numColumns++ : numRows++ )
			  << ", " << value << " );\n";
		}
	    }
	}
    }

    // create all children, some widgets have special requirements

    if ( objClass == "QTabWidget" ) {
	for ( n = e.firstChild().toElement(); !n.isNull(); n = n.nextSibling().toElement() ) {
	    if ( tags.contains( n.tagName()  ) ) {
		QString page = createObjectImpl( n, objClass, objName );
		QString comment;
		QString label = DomTool::readAttribute( n, "title", "", comment ).toString();
		out << indent << objName << "->insertTab( " << page << ", \"\" );" << endl;
		trout << indent << objName << "->changeTab( " << page << ", "
		      << trcall( label, comment ) << " );" << endl;
	    }
	}
    } else if ( objClass == "QWidgetStack" ) {
	for ( n = e.firstChild().toElement(); !n.isNull(); n = n.nextSibling().toElement() ) {
	    if ( tags.contains( n.tagName()  ) ) {
		QString page = createObjectImpl( n, objClass, objName );
		int id = DomTool::readAttribute( n, "id", "" ).toInt();
		out << indent << objName << "->addWidget( " << page << ", " << id << " );" << endl;
	    }
	}
     } else if ( objClass != "QToolBar" && objClass != "QMenuBar" ) { // standard widgets
	for ( n = e.firstChild().toElement(); !n.isNull(); n = n.nextSibling().toElement() ) {
	    if ( tags.contains( n.tagName() ) )
		createObjectImpl( n, objClass, objName );
	}
    }

    return objName;
}



/*!
  Creates a set-call for property \a exclusiveProp of the object
  given in \a e.

  If the object does not have this property, the function does nothing.

  Exclusive properties are used to generate the implementation of
  application font or palette change handlers in createFormImpl().

 */
void Uic::createExclusiveProperty( const QDomElement & e, const QString& exclusiveProp )
{
    QDomElement n;
    QString objClass = getClassName( e );
    if ( objClass.isEmpty() )
	return;
    QString objName = getObjectName( e );
    if ( objClass.isEmpty() )
	return;
    for ( n = e.firstChild().toElement(); !n.isNull(); n = n.nextSibling().toElement() ) {
	if ( n.tagName() == "property" ) {
	    bool stdset = stdsetdef;
	    if ( n.hasAttribute( "stdset" ) )
		stdset = toBool( n.attribute( "stdset" ) );
	    QString prop = n.attribute( "name" );
	    if ( prop != exclusiveProp )
		continue;
	    QString value = setObjectProperty( objClass, objName, prop, n.firstChild().toElement(), stdset );
	    if ( value.isEmpty() )
		continue;
	    // we assume the property isn't of type 'string'
	    out << '\t' << objName << "->setProperty( \"" << prop << "\", " << value << " );" << endl;
	}
    }
}


/*!  Attention: this function has to be in sync with
  Resource::saveProperty() and DomTool::elementToVariant. If you
  change one, change all.
 */
QString Uic::setObjectProperty( const QString& objClass, const QString& obj, const QString &prop, const QDomElement &e, bool stdset )
{