form.cpp

来自「qt-x11-free-3.0.3.tar.gz minigui图形界面工具」· C++ 代码 · 共 1,243 行 · 第 1/3 页

/**********************************************************************
** 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 "widgetdatabase.h"
#include "domtool.h"
#include <qstringlist.h>
#include <qfile.h>
#include <qfileinfo.h>
#define NO_STATIC_COLORS
#include <globaldefs.h>
#include <zlib.h>

static QByteArray unzipXPM( QString data, ulong& length )
{
    uchar *ba = new uchar[ data.length() / 2 ];
    for ( int i = 0; i < (int)data.length() / 2; ++i ) {
	char h = data[ 2 * i ].latin1();
	char l = data[ 2 * i  + 1 ].latin1();
	uchar r = 0;
	if ( h <= '9' )
	    r += h - '0';
	else
	    r += h - 'a' + 10;
	r = r << 4;
	if ( l <= '9' )
	    r += l - '0';
	else
	    r += l - 'a' + 10;
	ba[ i ] = r;
    }
    // I'm not sure this makes sense. Why couldn't the compressed data be
    // less than 20% of the original data? Maybe it's enough to trust the
    // `length' passed as an argument. Quoting the zlib header:
    // 		Upon entry, destLen is the total size of the destination
    // 		buffer, which must be large enough to hold the entire
    // 		uncompressed data. (The size of the uncompressed data must
    // 		have been saved previously by the compressor and transmitted
    // 		to the decompressor by some mechanism outside the scope of
    // 		this compression library.)
    // Which is the role of `length'. On the other hand this could prevent
    // crashes in some cases of slightly corrupt UIC files.
    if ( length <  data.length() * 5 )
	length = data.length() * 5;
    QByteArray baunzip( length );
    ::uncompress( (uchar*) baunzip.data(), &length, ba, data.length()/2 );
    delete[] ba;
    return baunzip;
}



/*!
  Creates a declaration ( headerfile ) for the form given in \a e

  \sa createFormImpl(), createObjectDecl()
 */
void Uic::createFormDecl( const QDomElement &e )
{
    QDomElement n;
    QDomNodeList nl;
    int i;
    QString objClass = getClassName( e );
    if ( objClass.isEmpty() )
	return;
    QString objName = getObjectName( e );

    QStringList typeDefs;

    QMap<QString, CustomInclude> customWidgetIncludes;

    // at first the images, we need to ensure the names are unique
    QMap<QString, int> customWidgets;
    QStringList forwardDecl;
    QStringList forwardDecl2;
    QString exportMacro;
    for ( n = e; !n.isNull(); n = n.nextSibling().toElement() ) {
	if ( n.tagName()  == "images" ) {
	    nl = n.elementsByTagName( "image" );
	    for ( i = 0; i < (int) nl.length(); i++ ) {
		registerObject( nl.item(i).firstChild().firstChild().toText().data() );
	    }
	} else if ( n.tagName() == "customwidgets" ) {
	    QDomElement n2 = n.firstChild().toElement();
	    while ( !n2.isNull() ) {
		if ( n2.tagName() == "customwidget" ) {
		    QDomElement n3 = n2.firstChild().toElement();
		    QString cl;
		    WidgetDatabaseRecord *r = new WidgetDatabaseRecord;
		    while ( !n3.isNull() ) {
			if ( n3.tagName() == "class" ) {
			    cl = n3.firstChild().toText().data();
			    if ( !nofwd )
				forwardDecl << cl;
			    customWidgets.insert( cl, 0 );
			    r->name = cl;
			} else if ( n3.tagName() == "header" ) {
			    CustomInclude ci;
			    ci.header = n3.firstChild().toText().data();
			    ci.location = n3.attribute( "location", "global" );
			    r->includeFile = ci.header;
			    customWidgetIncludes.insert( cl, ci );
			}
			WidgetDatabase::append( r );
			n3 = n3.nextSibling().toElement();
		    }
		}
		n2 = n2.nextSibling().toElement();
	    }
	}
    }

    // register the object and unify its name
    objName = registerObject( objName );
    QString protector = objName.upper() + "_H";
    out << "#ifndef " << protector << endl;
    out << "#define " << protector << endl;
    out << endl;
    out << "#include <qvariant.h>" << endl; // for broken HP-UX compilers

    QStringList globalIncludes, localIncludes;
    int wid = WidgetDatabase::idFromClassName( objClass );
    {
	QMap<QString, CustomInclude>::Iterator it = customWidgetIncludes.find( objClass );
	if ( it != customWidgetIncludes.end() ) {
	    if ( ( *it ).location == "global" )
		globalIncludes += (*it).header;
	    else
		localIncludes += (*it).header;
	} else {
	    globalIncludes += WidgetDatabase::includeFile( wid );
	}
    }

    nl = e.parentNode().toElement().elementsByTagName( "include" );
    for ( i = 0; i < (int) nl.length(); i++ ) {
	QDomElement n2 = nl.item(i).toElement();
	QString s = n2.firstChild().toText().data();
	if ( n2.attribute( "impldecl", "in implementation" ) == "in declaration" &&
	     n2.attribute( "location" ) != "local" ) {
	    if ( s.right( 5 ) == ".ui.h" )
		continue;
	    globalIncludes += s;
	}
    }
    for ( i = 0; i < (int) nl.length(); i++ ) {
	QDomElement n2 = nl.item(i).toElement();
	QString s = n2.firstChild().toText().data();
	if ( n2.attribute( "impldecl", "in implementation" ) == "in declaration" &&
	     n2.attribute( "location" ) == "local" &&!globalIncludes.contains( s ) ) {
	    if ( s.right( 5 ) == ".ui.h" )
		continue;
	    localIncludes += s;
	}
    }

    QStringList::Iterator it, it2, it3;

    globalIncludes = unique( globalIncludes );
    for ( it = globalIncludes.begin(); it != globalIncludes.end(); ++it ) {
	if ( !(*it).isEmpty() )
	    out << "#include <" << *it << ">" << endl;
    }
    localIncludes = unique( localIncludes );
    for ( it = localIncludes.begin(); it != localIncludes.end(); ++it ) {
	if ( !(*it).isEmpty() )
	    out << "#include \"" << *it << "\"" << endl;
    }

    // forward declarations for child widgets and layouts
    out << "class QVBoxLayout; " << endl;
    out << "class QHBoxLayout; " << endl;
    out << "class QGridLayout; " << endl;
    if ( objClass == "QMainWindow" ) {
	out << "class QAction;" << endl;
	out << "class QActionGroup;" << endl;
	out << "class QToolBar;" << endl;
	out << "class QPopupMenu;" << endl;
    }

    bool dbForm = FALSE;
    registerDatabases( e );
    dbConnections = unique( dbConnections );
    if ( dbConnections.count() )
	forwardDecl += "QSqlDatabase";
    if ( dbCursors.count() )
	forwardDecl += "QSqlCursor";
    if ( dbForms[ "(default)" ].count() )
	dbForm = TRUE;
    bool subDbForms = FALSE;
    for ( it = dbConnections.begin(); it != dbConnections.end(); ++it ) {
	if ( !(*it).isEmpty() && (*it) != "(default)" ) {
	    if ( dbForms[ (*it) ].count() ) {
		subDbForms = TRUE;
		break;
	    }
	}
    }
    if ( dbForm || subDbForms )
	forwardDecl += "QSqlForm";

    for ( it = tags.begin(); it != tags.end(); ++it ) {
	nl = e.parentNode().toElement().elementsByTagName( *it );
	for ( i = 1; i < (int) nl.length(); i++ ) { // begin at 1, 0 is the toplevel widget
	    QString s = getClassName( nl.item(i).toElement() );
	    if ( s == "QLayoutWidget" )
		continue; // hide qlayoutwidgets
	    if ( s == "Line" )
		s = "QFrame";
	    if ( !(nofwd && customWidgets.contains(s)) )
		forwardDecl += s;
	    if ( s.mid( 1 ) == "ListBox" || s.mid( 1 ) == "ListView" || s.mid( 1 ) == "IconView" )
		forwardDecl += "Q" + s.mid( 1 ) + "Item";
	    if ( s == "QDataTable" ) { // other convenience classes which are used in QDataTable signals, and thus should be forward-declared by uic for us
		forwardDecl += "QSqlRecord";
	    }
	}
    }

    // some typedefs, maybe
    typeDefs = unique( typeDefs );
    for ( it = typeDefs.begin(); it != typeDefs.end(); ++it ) {
	if ( !(*it).isEmpty() )
	    out << "typedef " << *it << ";" << endl;
    }

    nl = e.parentNode().toElement().elementsByTagName( "forward" );
    for ( i = 0; i < (int) nl.length(); i++ )
	forwardDecl2 << nl.item(i).toElement().firstChild().toText().data();

    nl = e.parentNode().toElement().elementsByTagName( "include" );
    for ( i = 0; i < (int) nl.length(); i++ ) {
	QDomElement n2 = nl.item(i).toElement();
	QString s = n2.firstChild().toText().data();
	if ( n2.attribute( "impldecl", "in implementation" ) == "in declaration" &&
	     n2.attribute( "location" ) != "local" )
	    globalIncludes += s;
    }
    for ( i = 0; i < (int) nl.length(); i++ ) {
	QDomElement n2 = nl.item(i).toElement();
	QString s = n2.firstChild().toText().data();
	if ( n2.attribute( "impldecl", "in implementation" ) == "in declaration" &&
	     n2.attribute( "location" ) == "local" &&!globalIncludes.contains( s ) )
	    localIncludes += s;
    }
    nl = e.parentNode().toElement().elementsByTagName( "exportmacro" );
    if ( nl.length() == 1 )
	exportMacro = nl.item( 0 ).firstChild().toText().data();

    forwardDecl = unique( forwardDecl );
    for ( it = forwardDecl.begin(); it != forwardDecl.end(); ++it ) {
	if ( !(*it).isEmpty() && (*it) != objClass )
	    out << "class " << *it << ";" << endl;
    }

    for ( it = forwardDecl2.begin(); it != forwardDecl2.end(); ++it ) {
	QString fd = *it;
	fd = fd.stripWhiteSpace();
	if ( !fd.endsWith( ";" ) )
	    fd += ";";
	out << fd << endl;
    }

    out << endl;
    out << "class " << ( !exportMacro.isEmpty() ? QString( exportMacro + " " ) : QString( "" ) ) <<
	nameOfClass << " : public " << objClass << endl;
    out << "{ " << endl;

/* tmake ignore Q_OBJECT */
    out << "    Q_OBJECT" << endl;
    out << endl;
    out << "public:" << endl;

    // constructor(s)
    if ( objClass == "QDialog" || objClass == "QWizard" ) {
	out << "    " << nameOfClass << "( QWidget* parent = 0, const char* name = 0, bool modal = FALSE, WFlags fl = 0 );" << endl;
    } else if ( objClass == "QWidget" ) {
	out << "    " << nameOfClass << "( QWidget* parent = 0, const char* name = 0, WFlags fl = 0 );" << endl;
    } else if ( objClass == "QMainWindow" ) {
	out << "    " << nameOfClass << "( QWidget* parent = 0, const char* name = 0, WFlags fl = WType_TopLevel );" << endl;
	isMainWindow = TRUE;
    } else {
	out << "    " << nameOfClass << "( QWidget* parent = 0, const char* name = 0 );" << endl;
    }

    // destructor
    out << "    ~" << nameOfClass << "();" << endl;
    out << endl;

    // children
    bool needEventHandler = FALSE;
    bool needPolish = FALSE;
    nl = e.parentNode().toElement().elementsByTagName( "widget" );
    for ( i = 1; i < (int) nl.length(); i++ ) { // start at 1, 0 is the toplevel widget
	n = nl.item(i).toElement();
	createObjectDecl( n );
	needEventHandler = needEventHandler ||
			   !DomTool::propertiesOfType( n, "font" ).isEmpty() ;
	QString s = getClassName( n );
	if ( s == "QDataTable" || s == "QDataBrowser" ) {
	    if ( isFrameworkCodeGenerated( n ) )
		 needPolish = TRUE;
	}
    }

    // actions, toolbars, menus
    for ( n = e; !n.isNull(); n = n.nextSibling().toElement() ) {
	if ( n.tagName()  == "actions" ) {
	    for ( QDomElement a = n.firstChild().toElement(); !a.isNull(); a = a.nextSibling().toElement() )
		createActionDecl( a );
	} else if ( n.tagName() == "toolbars" ) {
	    for ( QDomElement a = n.firstChild().toElement(); !a.isNull(); a = a.nextSibling().toElement() )
		createToolbarDecl( a );
	} else if ( n.tagName() == "menubar" ) {
	    out << "    " << "QMenuBar *" << getObjectName( n ) << ";" << endl;

	    for ( QDomElement a = n.firstChild().toElement(); !a.isNull(); a = a.nextSibling().toElement() )
		createMenuBarDecl( a );
	}
    }

    out << endl;

    // database connections
    dbConnections = unique( dbConnections );
    for ( it = dbConnections.begin(); it != dbConnections.end(); ++it ) {
	if ( !(*it).isEmpty() ) {
	    // only need pointers to non-default connections
	    if ( (*it) != "(default)" && !(*it).isEmpty() )
		out << indent << "QSqlDatabase* " << *it << "Connection;" << endl;
	}
    }

    out << endl;

    // find signals
    QStringList extraSignals;
    nl = e.parentNode().toElement().elementsByTagName( "signal" );
    for ( i = 0; i < (int) nl.length(); i++ ) {
	n = nl.item(i).toElement();
	if ( n.parentNode().toElement().tagName() != "signals"
	     && n.parentNode().toElement().tagName() != "connections" )
	    continue;
	if ( n.attribute( "language", "C++" ) != "C++" )
	    continue;
	QString sigName = n.firstChild().toText().data().stripWhiteSpace();	
	if ( sigName.endsWith( ";" ) )
	    sigName = sigName.left( sigName.length() - 1 );
	extraSignals += sigName;
    }

    // create signals
    if ( !extraSignals.isEmpty() ) {
	out << "signals:" << endl;
	for ( it = extraSignals.begin(); it != extraSignals.end(); ++it )
	    out << "    void " << (*it) << ";" << endl;
	out << endl;
    }

    // find additional slots
    QStringList publicSlots, protectedSlots, privateSlots;
    QStringList publicSlotTypes, protectedSlotTypes, privateSlotTypes;
    QStringList publicSlotSpecifier, protectedSlotSpecifier, privateSlotSpecifier;
    QMap<QString, QString> functionImpls;
    nl = e.parentNode().toElement().elementsByTagName( "slot" );
    for ( i = 0; i < (int) nl.length(); i++ ) {
	n = nl.item(i).toElement();
	if ( n.parentNode().toElement().tagName() != "slots"
	     && n.parentNode().toElement().tagName() != "connections" )
	    continue;
	if ( n.attribute( "language", "C++" ) != "C++" )
	    continue;
	QString returnType = n.attribute( "returnType", "void" );
	QString slotName = n.firstChild().toText().data().stripWhiteSpace();
	if ( slotName.endsWith( ";" ) )
	    slotName = slotName.left( slotName.length() - 1 );
	QString specifier = n.attribute( "specifier" );
	QString access = n.attribute( "access" );
	if ( access == "protected" ) {
	    protectedSlots += slotName;
	    protectedSlotTypes += returnType;
	    protectedSlotSpecifier += specifier;
	} else if ( access == "private" ) {
	    privateSlots += slotName;
	    privateSlotTypes += returnType;
	    privateSlotSpecifier += specifier;
	} else {
	    publicSlots += slotName;
	    publicSlotTypes += returnType;
	    publicSlotSpecifier += specifier;
	}
    }

    // create public additional slots
    if ( !publicSlots.isEmpty() || needPolish ) {
	out << "public slots:" << endl;
	for ( it = publicSlots.begin(), it2 = publicSlotTypes.begin(), it3 = publicSlotSpecifier.begin();