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451 lines
18 KiB
451 lines
18 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/distributor/distributor.doc:1 -->
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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>Qt Distribution Example</title>
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<style type="text/css"><!--
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fn { margin-left: 1cm; text-indent: -1cm; }
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a:link { color: #004faf; text-decoration: none }
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a:visited { color: #672967; text-decoration: none }
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body { background: #ffffff; color: black; }
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--></style>
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</head>
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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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| <a href="classes.html">
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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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<font color="#004faf">Annotated</font></a>
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| <a href="groups.html">
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<font color="#004faf">Grouped Classes</font></a>
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| <a href="functions.html">
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<font color="#004faf">Functions</font></a>
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</td>
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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>Qt Distribution Example</h1>
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<p> This example program modifies the hard-coded paths that are
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compiled into the Qt library.
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<p> When distributing the Qt library, the final installation prefix is
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very rarely the same as the prefix used when doing development.
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You can use the code from this example to modify the following
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hard-coded paths in Qt library:
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<p> <ul>
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<p> <li> Prefix - Normally, all other paths are relative to the <em>Prefix</em>.
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<p> <li> Binaries - Location of binaries distributed with Qt (for
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example, <em>Qt Assistant</em>).
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<p> <li> Documentation - Location of the Qt documentation.
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<p> <li> Headers - Location of the Qt headers.
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<p> <li> Libraries - Location of addition libraries distributed with Qt
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(for example, the <em>qui</em> library).
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<p> <li> Plugins - Location of the Qt plugins.
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<p> <li> Data - Location of applicaton specific data for all programs
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distributed with Qt.
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<p> </ul>
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<p> <hr>
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<p> Implementation:
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<p> <pre>/****************************************************************************
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** ui.h extension file, included from the uic-generated form implementation.
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**
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** If you wish to add, delete or rename functions or slots use
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** Qt Designer which will update this file, preserving your code. Create an
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** init() function in place of a constructor, and a destroy() function in
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** place of a destructor.
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*****************************************************************************/
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#include <<a href="qapplication-h.html">qapplication.h</a>>
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#include <<a href="qcursor-h.html">qcursor.h</a>>
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#include <<a href="qeventloop-h.html">qeventloop.h</a>>
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#include <<a href="qfile-h.html">qfile.h</a>>
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#include <<a href="qfiledialog-h.html">qfiledialog.h</a>>
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#include <<a href="qfileinfo-h.html">qfileinfo.h</a>>
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#include <<a href="qlineedit-h.html">qlineedit.h</a>>
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#include <<a href="qmessagebox-h.html">qmessagebox.h</a>>
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#include <<a href="qpushbutton-h.html">qpushbutton.h</a>>
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#include <<a href="qtimer-h.html">qtimer.h</a>>
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void Distributor::init()
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{
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timer = new <a href="qtimer.html">QTimer</a>( this );
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<a name="x2672"></a> connect( timer, SIGNAL(<a href="qtimer.html#timeout">timeout</a>()), SLOT(checkLibData()) );
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cancelButton()->setAutoDefault( FALSE );
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backButton()->setAutoDefault( FALSE );
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setNextEnabled( selectLibrary, FALSE );
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setHelpEnabled( selectLibrary, FALSE );
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setHelpEnabled( modifyPaths, FALSE );
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setHelpEnabled( verifyMods, FALSE );
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setFinishEnabled( verifyMods, TRUE );
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}
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void Distributor::showPage( <a href="qwidget.html">QWidget</a> *page )
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{
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if ( page == selectLibrary ) {
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nextButton()->setDefault( TRUE );
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libFilename->setFocus();
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} else if ( page == modifyPaths ) {
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nextButton()->setDefault( TRUE );
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prefixPath->selectAll();
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prefixPath->setFocus();
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} else if ( page == verifyMods ) {
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finishButton()->setDefault( TRUE );
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finishButton()->setFocus();
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<a href="qstring.html">QString</a> labeltext =
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tr("<p><b>Current Library File:</b> %1</p>"
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"<table border=0>"
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"<tr><td><b>New Installation Prefix:</b></td><td>%2</td></tr>"
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"<tr><td></td><td></td></tr>"
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"<tr><td><b>Binaries Path:</b></td><td>%3</td></tr>"
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"<tr><td><b>Documentation Path:</b></td><td>%4</td></tr>"
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"<tr><td><b>Headers Path:</b></td><td>%5</td></tr>"
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"<tr><td><b>Libraries Path:</b></td><td>%6</td></tr>"
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"<tr><td><b>Plugins Path:</b></td><td>%7</td></tr>"
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"<tr><td><b>Data Path:</b></td><td>%8</td></tr>"
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"</table>"
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"<p>Please verify that these options are correct. Press the "
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"<i>Finish</i> button to apply these modifications to the Qt "
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"library. Use the <i>Back</i> button to make corrections. Use "
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"the <i>Cancel</i> button to abort.</p>")
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.arg( libFilename->text() )
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.arg( prefixPath->text() )
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.arg( binPath->text() )
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.arg( docPath->text() )
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.arg( hdrPath->text() )
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.arg( libPath->text() )
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.arg( plgPath->text() )
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.arg( datPath->text() );
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textLabel4->setText( labeltext );
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}
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<a name="x2673"></a> QWizard::<a href="qwizard.html#showPage">showPage</a>( page );
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}
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void Distributor::checkLibFilename( const <a href="qstring.html">QString</a> &filename )
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{
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setNextEnabled( selectLibrary, FALSE );
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<a href="qfileinfo.html">QFileInfo</a> fileinfo( filename );
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<a name="x2661"></a> if ( ! filename.<a href="qstring.html#isEmpty">isEmpty</a>() && fileinfo.<a href="qfileinfo.html#exists">exists</a>() &&
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<a name="x2665"></a><a name="x2663"></a> fileinfo.<a href="qfileinfo.html#isReadable">isReadable</a>() && fileinfo.<a href="qfileinfo.html#isWritable">isWritable</a>() &&
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<a name="x2664"></a><a name="x2662"></a> fileinfo.<a href="qfileinfo.html#isFile">isFile</a>() && !fileinfo.<a href="qfileinfo.html#isSymLink">isSymLink</a>() )
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<a name="x2671"></a> timer-><a href="qtimer.html#start">start</a>( 500, TRUE );
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}
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void Distributor::browseLibFilename()
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{
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<a href="qstring.html">QString</a> filename =
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<a name="x2660"></a> QFileDialog::<a href="qfiledialog.html#getOpenFileName">getOpenFileName</a>( <a href="qstring.html#QString-null">QString::null</a>, QString::null, this );
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libFilename->setText( filename );
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}
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static char *find_pattern( char *h, const char *n, ulong hlen )
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{
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if ( ! h || ! n || hlen == 0 )
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return 0;
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#ifdef Q_OS_UNIX
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size_t nlen;
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#else
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ulong nlen;
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#endif
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char nc = *n++;
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nlen = strlen( n );
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char hc;
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do {
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do {
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hc = *h++;
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if ( hlen-- < 1 )
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return 0;
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} while ( hc != nc );
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if ( nlen > hlen )
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return 0;
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} while ( <a href="qcstring.html#qstrncmp">qstrncmp</a>( h, n, nlen ) != 0 );
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return h + nlen;
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}
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void Distributor::checkLibData()
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{
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struct step {
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const char *key;
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<a href="qcstring.html">QCString</a> value;
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bool done;
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} steps[7];
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steps[0].key = "qt_nstpath=";
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steps[0].done = FALSE;
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steps[1].key = "qt_binpath=";
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steps[1].done = FALSE;
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steps[2].key = "qt_docpath=";
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steps[2].done = FALSE;
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steps[3].key = "qt_hdrpath=";
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steps[3].done = FALSE;
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steps[4].key = "qt_libpath=";
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steps[4].done = FALSE;
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steps[5].key = "qt_plgpath=";
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steps[5].done = FALSE;
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steps[6].key = "qt_datpath=";
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steps[6].done = FALSE;
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uint completed = 0;
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uint total_steps = sizeof(steps) / sizeof(step);
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<a href="qfile.html">QFile</a> file( libFilename->text() );
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<a name="x2659"></a> if ( file.<a href="qfile.html#open">open</a>( <a href="qfile.html#open">IO_ReadOnly</a> ) ) {
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<a name="x2653"></a> QApplication::<a href="qapplication.html#setOverrideCursor">setOverrideCursor</a>( WaitCursor );
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// instead of reading in the entire file, do the search in chunks
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char data[60000];
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ulong offset = 0;
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<a name="x2655"></a> while ( ! file.<a href="qfile.html#atEnd">atEnd</a>() && completed < total_steps ) {
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<a name="x2651"></a> QApplication::<a href="qapplication.html#eventLoop">eventLoop</a>()->processEvents( QEventLoop::ExcludeUserInput );
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<a name="x2667"></a> ulong len = file.<a href="qiodevice.html#readBlock">readBlock</a>( data, sizeof(data) );
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if ( len < 267 ) {
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// not enough room to make any modifications... stop
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break;
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}
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for ( uint x = 0; x < total_steps; ++x ) {
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if ( steps[x].done ) continue;
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char *s = find_pattern( data, steps[x].key, len );
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if ( s ) {
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ulong where = s - data;
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if ( len - where < 256 ) {
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// not enough space left to write the full
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// path... move the file pointer back to just
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// before the pattern and continue
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offset += where - 11;
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<a name="x2666"></a> file.<a href="qiodevice.html#at">at</a>( offset );
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len = file.<a href="qiodevice.html#readBlock">readBlock</a>( data, sizeof(data) );
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--x; // retry the current step
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continue;
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}
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steps[x].value = s;
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steps[x].done = TRUE;
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++completed;
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}
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}
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// move to the new read position
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offset += len - 11;
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file.<a href="qiodevice.html#at">at</a>( offset );
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}
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<a name="x2656"></a> file.<a href="qfile.html#close">close</a>();
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<a name="x2652"></a> QApplication::<a href="qapplication.html#restoreOverrideCursor">restoreOverrideCursor</a>();
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}
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if ( completed == total_steps ) {
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setNextEnabled( selectLibrary, TRUE );
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<a name="x2657"></a> <a href="qstring.html">QString</a> prefix = QFile::<a href="qfile.html#decodeName">decodeName</a>( steps[0].value );
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prefixPath->setText( prefix );
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<a href="qstring.html">QString</a> def_bin = prefix + QString::fromLatin1( "/bin" );
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<a href="qstring.html">QString</a> def_doc = prefix + QString::fromLatin1( "/doc" );
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<a href="qstring.html">QString</a> def_hdr = prefix + QString::fromLatin1( "/include" );
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<a href="qstring.html">QString</a> def_lib = prefix + QString::fromLatin1( "/lib" );
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<a href="qstring.html">QString</a> def_plg = prefix + QString::fromLatin1( "/plugins" );
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<a href="qstring.html">QString</a> def_dat = prefix;
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<a href="qstring.html">QString</a> bin = QFile::<a href="qfile.html#decodeName">decodeName</a>( steps[1].value );
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<a href="qstring.html">QString</a> doc = QFile::<a href="qfile.html#decodeName">decodeName</a>( steps[2].value );
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<a href="qstring.html">QString</a> hdr = QFile::<a href="qfile.html#decodeName">decodeName</a>( steps[3].value );
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<a href="qstring.html">QString</a> lib = QFile::<a href="qfile.html#decodeName">decodeName</a>( steps[4].value );
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<a href="qstring.html">QString</a> plg = QFile::<a href="qfile.html#decodeName">decodeName</a>( steps[5].value );
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<a href="qstring.html">QString</a> dat = QFile::<a href="qfile.html#decodeName">decodeName</a>( steps[6].value );
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autoSet->setChecked( def_bin == bin &&
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def_doc == doc &&
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def_hdr == hdr &&
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def_lib == lib &&
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def_plg == plg &&
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def_dat == dat );
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if ( ! autoSet->isChecked() ) {
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binPath->setText( bin );
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docPath->setText( doc );
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hdrPath->setText( hdr );
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libPath->setText( lib );
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plgPath->setText( plg );
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datPath->setText( dat );
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}
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}
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}
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void Distributor::checkInstallationPrefix( const <a href="qstring.html">QString</a> &prefix )
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{
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if ( autoSet->isChecked() ) {
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binPath->setText( prefix + QString::fromLatin1( "/bin" ) );
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docPath->setText( prefix + QString::fromLatin1( "/doc" ) );
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hdrPath->setText( prefix + QString::fromLatin1( "/include" ) );
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libPath->setText( prefix + QString::fromLatin1( "/lib" ) );
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plgPath->setText( prefix + QString::fromLatin1( "/plugins" ) );
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datPath->setText( prefix );
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}
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}
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void Distributor::browseInstallationPrefix()
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{
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<a href="qstring.html">QString</a> prefix =
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QFileDialog::<a href="qfiledialog.html#getOpenFileName">getOpenFileName</a>( QString::null, QString::null, this );
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prefixPath->setText( prefix );
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}
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void Distributor::toggleAutoSet( bool autoset )
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{
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if ( autoset ) checkInstallationPrefix( prefixPath->text() );
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}
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void Distributor::accept()
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{
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struct step {
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const char *key;
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<a href="qcstring.html">QCString</a> value;
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bool done;
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} steps[7];
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steps[0].key = "qt_nstpath=";
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<a name="x2658"></a> steps[0].value = QFile::<a href="qfile.html#encodeName">encodeName</a>( prefixPath->text() );
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steps[0].done = FALSE;
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steps[1].key = "qt_binpath=";
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steps[1].value = QFile::<a href="qfile.html#encodeName">encodeName</a>( binPath->text() );
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steps[1].done = FALSE;
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steps[2].key = "qt_docpath=";
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steps[2].value = QFile::<a href="qfile.html#encodeName">encodeName</a>( docPath->text() );
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steps[2].done = FALSE;
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steps[3].key = "qt_hdrpath=";
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steps[3].value = QFile::<a href="qfile.html#encodeName">encodeName</a>( hdrPath->text() );
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steps[3].done = FALSE;
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steps[4].key = "qt_libpath=";
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steps[4].value = QFile::<a href="qfile.html#encodeName">encodeName</a>( libPath->text() );
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steps[4].done = FALSE;
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steps[5].key = "qt_plgpath=";
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steps[5].value = QFile::<a href="qfile.html#encodeName">encodeName</a>( plgPath->text() );
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steps[5].done = FALSE;
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steps[6].key = "qt_datpath=";
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steps[6].value = QFile::<a href="qfile.html#encodeName">encodeName</a>( datPath->text() );
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steps[6].done = FALSE;
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uint completed = 0;
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uint total_steps = sizeof(steps) / sizeof(step);
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<a href="qfile.html">QFile</a> file( libFilename->text() );
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if ( file.<a href="qfile.html#open">open</a>( <a href="qfile.html#open">IO_ReadWrite</a> ) ) {
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QApplication::<a href="qapplication.html#setOverrideCursor">setOverrideCursor</a>( WaitCursor );
|
|
|
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// instead of reading in the entire file, do the search in chunks
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char data[60000];
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ulong offset = 0;
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while ( ! file.<a href="qfile.html#atEnd">atEnd</a>() && completed < total_steps ) {
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QApplication::<a href="qapplication.html#eventLoop">eventLoop</a>()->processEvents( QEventLoop::ExcludeUserInput );
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ulong len = file.<a href="qiodevice.html#readBlock">readBlock</a>( data, sizeof(data) );
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if ( len < 267 ) {
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// not enough room to make any modifications... stop
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break;
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}
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uint completed_save = completed;
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for ( uint x = 0; x < total_steps; ++x ) {
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if ( steps[x].done ) continue;
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char *s = find_pattern( data, steps[x].key, len );
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if ( s ) {
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ulong where = s - data;
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if ( len - where < 256 ) {
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// not enough space left to write the full
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|
// path... move the file pointer back to just
|
|
// before the pattern and continue
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|
offset += where - 11;
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file.<a href="qiodevice.html#at">at</a>( offset );
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|
len = file.<a href="qiodevice.html#readBlock">readBlock</a>( data, sizeof(data) );
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|
--x; // retry the current step
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continue;
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|
}
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|
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<a href="qcstring.html#qstrcpy">qstrcpy</a>( s, steps[x].value );
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steps[x].done = TRUE;
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|
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++completed;
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}
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}
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if ( completed != completed_save ) {
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// something changed... move file pointer back to
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// where the data was read and write the new data
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file.<a href="qiodevice.html#at">at</a>( offset );
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<a name="x2668"></a> file.<a href="qiodevice.html#writeBlock">writeBlock</a>( data, len );
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|
}
|
|
|
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// move to the new read position
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offset += len - 11;
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file.<a href="qiodevice.html#at">at</a>( offset );
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}
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file.<a href="qfile.html#close">close</a>();
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QApplication::<a href="qapplication.html#restoreOverrideCursor">restoreOverrideCursor</a>();
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}
|
|
|
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if ( completed != total_steps ) {
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QMessageBox::<a href="qmessagebox.html#information">information</a>( this,
|
|
tr("Qt Distribution Wizard"),
|
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tr("<p><h3>Modifications failed.</h3></p>"
|
|
"<p>Please make sure that you have permission "
|
|
"to write the selected file, and that the library "
|
|
"is properly built.</p>") );
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|
return;
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|
}
|
|
|
|
<a name="x2654"></a> QWizard::<a href="qdialog.html#accept">accept</a>();
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|
}
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</pre>
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|
|
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<p>See also <a href="examples.html">Examples</a>.
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<!-- eof -->
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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
|
|
<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
|
|
<td align=right><div align=right>Qt 3.3.8</div>
|
|
</table></div></address></body>
|
|
</html>
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