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173 lines
6.5 KiB
173 lines
6.5 KiB
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/examples/rot13/rot13.doc:4 -->
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<title>Rot13</title>
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<style type="text/css"><!--
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<body>
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<table border="0" cellpadding="0" cellspacing="0" width="100%">
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<tr bgcolor="#E5E5E5">
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<td valign=center>
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<a href="index.html">
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<font color="#004faf">Home</font></a>
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<font color="#004faf">All Classes</font></a>
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<font color="#004faf">Main Classes</font></a>
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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>Rot13</h1>
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<p>
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This example lets you enter a text into a mulitilineedit widget.
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It will be displayed in the edit widget to the right transformed using
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the rot13 algorithm.
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<p> <hr>
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<p> Header file:
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<p> <pre>/****************************************************************************
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** $Id: qt/rot13.h 3.3.8 edited Jan 11 14:46 $
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**
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** Definition of something or other
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**
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** Created : 979899
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**
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** Copyright (C) 1997-2007 Trolltech ASA. All rights reserved.
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**
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** This file is part of an example program for Qt. This example
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** program may be used, distributed and modified without limitation.
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**
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*****************************************************************************/
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#ifndef ROT13_H
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#define ROT13_H
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#include <<a href="qwidget-h.html">qwidget.h</a>>
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class QMultiLineEdit;
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class Rot13: public <a href="qwidget.html">QWidget</a> {
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<a href="metaobjects.html#Q_OBJECT">Q_OBJECT</a>
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public:
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Rot13();
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<a href="qstring.html">QString</a> rot13( const <a href="qstring.html">QString</a> & ) const;
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private slots:
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void changeLeft();
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void changeRight();
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private:
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<a href="qmultilineedit.html">QMultiLineEdit</a> * left, * right;
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};
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#endif
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</pre>
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<p> <hr>
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<p> Implementation:
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<p> <pre>/****************************************************************************
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** $Id: qt/rot13.cpp 3.3.8 edited Jan 11 14:37 $
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**
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** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
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**
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** This file is part of an example program for Qt. This example
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** program may be used, distributed and modified without limitation.
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**
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*****************************************************************************/
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#include "rot13.h"
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#include <<a href="qmultilineedit-h.html">qmultilineedit.h</a>>
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#include <<a href="qpushbutton-h.html">qpushbutton.h</a>>
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#include <<a href="qapplication-h.html">qapplication.h</a>>
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#include <<a href="qlayout-h.html">qlayout.h</a>>
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<a name="f432"></a>Rot13::Rot13()
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{
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left = new <a href="qmultilineedit.html">QMultiLineEdit</a>( this, "left" );
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right = new <a href="qmultilineedit.html">QMultiLineEdit</a>( this, "right" );
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<a name="x1375"></a> <a href="qobject.html#connect">connect</a>( left, SIGNAL(<a href="qtextedit.html#textChanged">textChanged</a>()), this, SLOT(changeRight()) );
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<a href="qobject.html#connect">connect</a>( right, SIGNAL(<a href="qtextedit.html#textChanged">textChanged</a>()), this, SLOT(changeLeft()) );
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<a href="qpushbutton.html">QPushButton</a> * quit = new <a href="qpushbutton.html">QPushButton</a>( "&Quit", this );
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<a name="x1379"></a> quit-><a href="qwidget.html#setFocusPolicy">setFocusPolicy</a>( NoFocus );
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<a href="qobject.html#connect">connect</a>( quit, SIGNAL(<a href="qbutton.html#clicked">clicked</a>()), qApp, SLOT(<a href="qapplication.html#quit">quit</a>()) );
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<a href="qgridlayout.html">QGridLayout</a> * l = new <a href="qgridlayout.html">QGridLayout</a>( this, 2, 2, 5 );
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<a name="x1370"></a> l-><a href="qgridlayout.html#addWidget">addWidget</a>( left, 0, 0 );
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l-><a href="qgridlayout.html#addWidget">addWidget</a>( right, 0, 1 );
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l-><a href="qgridlayout.html#addWidget">addWidget</a>( quit, 1, 1, AlignRight );
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<a name="x1378"></a> left-><a href="qwidget.html#setFocus">setFocus</a>();
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}
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void <a name="f433"></a>Rot13::changeLeft()
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{
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<a name="x1371"></a> left-><a href="qobject.html#blockSignals">blockSignals</a>( TRUE );
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<a name="x1374"></a><a name="x1373"></a> left-><a href="qtextedit.html#setText">setText</a>( rot13( right-><a href="qtextedit.html#text">text</a>() ) );
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left-><a href="qobject.html#blockSignals">blockSignals</a>( FALSE );
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}
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void <a name="f434"></a>Rot13::changeRight()
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{
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right-><a href="qobject.html#blockSignals">blockSignals</a>( TRUE );
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right-><a href="qtextedit.html#setText">setText</a>( rot13( left-><a href="qtextedit.html#text">text</a>() ) );
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right-><a href="qobject.html#blockSignals">blockSignals</a>( FALSE );
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}
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QString <a name="f435"></a>Rot13::rot13( const <a href="qstring.html">QString</a> & input ) const
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{
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<a href="qstring.html">QString</a> r = input;
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<a name="x1372"></a> int i = r.<a href="qstring.html#length">length</a>();
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while( i-- ) {
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if ( r[i] >= QChar('A') && r[i] <= QChar('M') ||
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r[i] >= QChar('a') && r[i] <= QChar('m') )
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r[i] = (char)((int)QChar(r[i]) + 13);
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else if ( r[i] >= QChar('N') && r[i] <= QChar('Z') ||
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r[i] >= QChar('n') && r[i] <= QChar('z') )
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r[i] = (char)((int)QChar(r[i]) - 13);
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}
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return r;
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}
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int main( int argc, char ** argv )
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{
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<a href="qapplication.html">QApplication</a> a( argc, argv );
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Rot13 r;
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r.<a href="qwidget.html#resize">resize</a>( 400, 400 );
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a.<a href="qapplication.html#setMainWidget">setMainWidget</a>( &r );
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r.<a href="qwidget.html#setCaption">setCaption</a>("Qt Example - ROT13");
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r.<a href="qwidget.html#show">show</a>();
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return a.<a href="qapplication.html#exec">exec</a>();
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}
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</pre>
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<p>See also <a href="examples.html">Examples</a>.
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<p><address><hr><div align=center>
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<table width=100% cellspacing=0 border=0><tr>
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<td>Copyright © 2007
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<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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<td align=right><div align=right>Qt 3.3.8</div>
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</table></div></address></body>
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