helpviewer-main-cpp.html

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{
    <a href="qmainwindow.html#0eb7bc">menuBar</a>()-&gt;setItemEnabled( backwardId, b);
}

void <a name="135"></a>HelpWindow::setForwardAvailable( bool b)
{
    <a href="qmainwindow.html#0eb7bc">menuBar</a>()-&gt;setItemEnabled( forwardId, b);
}

void <a name="136"></a>HelpWindow::textChanged()
{
    if ( browser-&gt;documentTitle().isNull() ) {
        <a href="qwidget.html#d6a291">setCaption</a>( "Qt Example - Helpviewer - " + browser-&gt;context() );
        selectedURL = browser-&gt;context();
    }
    else {
        <a href="qwidget.html#d6a291">setCaption</a>( "Qt Example - Helpviewer - " + browser-&gt;documentTitle() ) ;
        selectedURL = browser-&gt;documentTitle();
    }

    if ( !selectedURL.isEmpty() &amp;&amp; pathCombo ) {
        bool exists = FALSE;
        int i;
        for ( i = 0; i &lt; pathCombo-&gt;count(); ++i ) {
            if ( pathCombo-&gt;text( i ) == selectedURL ) {
                exists = TRUE;
                break;
            }
        }
        if ( !exists ) {
            pathCombo-&gt;insertItem( selectedURL, 0 );
            pathCombo-&gt;setCurrentItem( 0 );
            mHistory[ hist-&gt;insertItem( selectedURL ) ] = selectedURL;
        } else
            pathCombo-&gt;setCurrentItem( i );
        selectedURL = QString::null;
    }
}

HelpWindow::~HelpWindow()
{
    history.clear();
    <a href="qmap.html">QMap</a>&lt;int, QString&gt;::Iterator it = mHistory.begin();
    for ( ; it != mHistory.end(); ++it )
        history.append( *it );

    <a href="qfile.html">QFile</a> f( <a href="qdir.html#2ec6fd">QDir::currentDirPath</a>() + "/.history" );
    f.<a href="qfile.html#255995">open</a>( IO_WriteOnly );
    <a href="qdatastream.html">QDataStream</a> s( &amp;f );
    s &lt;&lt; history;
    f.<a href="qfile.html#64e640">close</a>();

    bookmarks.clear();
    <a href="qmap.html">QMap</a>&lt;int, QString&gt;::Iterator it2 = mBookmarks.begin();
    for ( ; it2 != mBookmarks.end(); ++it2 )
        bookmarks.append( *it2 );

    <a href="qfile.html">QFile</a> f2( <a href="qdir.html#2ec6fd">QDir::currentDirPath</a>() + "/.bookmarks" );
    f2.<a href="qfile.html#255995">open</a>( IO_WriteOnly );
    <a href="qdatastream.html">QDataStream</a> s2( &amp;f2 );
    s2 &lt;&lt; bookmarks;
    f2.<a href="qfile.html#64e640">close</a>();
}

void <a name="137"></a>HelpWindow::about()
{
    <a href="qmessagebox.html#f6c3cd">QMessageBox::about</a>( this, "HelpViewer Example",
                        "&lt;p&gt;This example implements a simple HTML help viewer "
                        "using Qt's rich text capabilities&lt;/p&gt;"
                        "&lt;p&gt;It's just about 100 lines of C++ code, so don't expect too much :-)&lt;/p&gt;"
                        );
}

void <a name="138"></a>HelpWindow::aboutQt()
{
    <a href="qmessagebox.html#b72270">QMessageBox::aboutQt</a>( this, "QBrowser" );
}

void <a name="139"></a>HelpWindow::openFile()
{
#ifndef QT_NO_FILEDIALOG
    <a href="qstring.html">QString</a> fn = QFileDialog::getOpenFileName( QString::null, QString::null, this );
    if ( !fn.<a href="qstring.html#c62623">isEmpty</a>() )
        browser-&gt;setSource( fn );
#endif
}

void <a name="140"></a>HelpWindow::newWindow()
{
    ( new HelpWindow(browser-&gt;source(), "qbrowser") )-&gt;show();
}

void <a name="141"></a>HelpWindow::print()
{
#ifndef QT_NO_PRINTER
    <a href="qprinter.html">QPrinter</a> printer;
    printer.<a href="qprinter.html#ec440a">setFullPage</a>(TRUE);
    if ( printer.<a href="qprinter.html#c3cd23">setup</a>() ) {
        <a href="qpainter.html">QPainter</a> p( &amp;printer );
        <a href="qpaintdevicemetrics.html">QPaintDeviceMetrics</a> metrics(p.<a href="qpainter.html#82920f">device</a>());
        int dpix = metrics.<a href="qpaintdevicemetrics.html#a15e9e">logicalDpiX</a>();
        int dpiy = metrics.<a href="qpaintdevicemetrics.html#b13b26">logicalDpiY</a>();
        const int margin = 72; // pt
        <a href="qrect.html">QRect</a> body(margin*dpix/72, margin*dpiy/72,
                   metrics.<a href="qpaintdevicemetrics.html#95eb7b">width</a>()-margin*dpix/72*2,
                   metrics.<a href="qpaintdevicemetrics.html#d4fedb">height</a>()-margin*dpiy/72*2 );
        <a href="qfont.html">QFont</a> font("times", 10);
        <a href="qsimplerichtext.html">QSimpleRichText</a> richText( browser-&gt;text(), font, browser-&gt;context(), browser-&gt;styleSheet(),
                                  browser-&gt;mimeSourceFactory(), body.<a href="qrect.html#581ab8">height</a>() );
        richText.<a href="qsimplerichtext.html#6f02c2">setWidth</a>( &amp;p, body.<a href="qrect.html#45fe95">width</a>() );
        <a href="qrect.html">QRect</a> view( body );
        int page = 1;
        for (;;) {
            p.<a href="qpainter.html#898839">setClipRect</a>( body );
            richText.<a href="qsimplerichtext.html#4e026f">draw</a>( &amp;p, body.<a href="qrect.html#369cab">left</a>(), body.<a href="qrect.html#4dd27e">top</a>(), view, <a href="qwidget.html#d92bf4">colorGroup</a>() );
            p.<a href="qpainter.html#79ea5e">setClipping</a>( FALSE );
            view.<a href="qrect.html#3de222">moveBy</a>( 0, body.<a href="qrect.html#581ab8">height</a>() );
            p.<a href="qpainter.html#eb778c">translate</a>( 0 , -body.<a href="qrect.html#581ab8">height</a>() );
            p.<a href="qpainter.html#998df2">setFont</a>( font );
            p.<a href="qpainter.html#0f088f">drawText</a>( view.<a href="qrect.html#896e32">right</a>() - p.<a href="qpainter.html#73b2e5">fontMetrics</a>().width( <a href="qstring.html#1cd85f">QString::number</a>(page) ),
                        view.<a href="qrect.html#2de4b0">bottom</a>() + p.<a href="qpainter.html#73b2e5">fontMetrics</a>().ascent() + 5, QString::number(page) );
            if ( view.<a href="qrect.html#4dd27e">top</a>()  &gt;= richText.<a href="qsimplerichtext.html#428651">height</a>() )
                break;
            printer.<a href="qprinter.html#d4f693">newPage</a>();
            page++;
        }
    }
#endif
}

void <a name="142"></a>HelpWindow::pathSelected( const QString &amp;_path )
{
    browser-&gt;setSource( _path );
    <a href="qmap.html">QMap</a>&lt;int, QString&gt;::Iterator it = mHistory.begin();
    bool exists = FALSE;
    for ( ; it != mHistory.end(); ++it ) {
        if ( *it == _path ) {
            exists = TRUE;
            break;
        }
    }
    if ( !exists )
        mHistory[ hist-&gt;insertItem( _path ) ] = _path;
}

void <a name="143"></a>HelpWindow::readHistory()
{
    if ( <a href="qfile.html#900285">QFile::exists</a>( <a href="qdir.html#2ec6fd">QDir::currentDirPath</a>() + "/.history" ) ) {
        <a href="qfile.html">QFile</a> f( <a href="qdir.html#2ec6fd">QDir::currentDirPath</a>() + "/.history" );
        f.<a href="qfile.html#255995">open</a>( IO_ReadOnly );
        <a href="qdatastream.html">QDataStream</a> s( &amp;f );
        s &gt;&gt; history;
        f.<a href="qfile.html#64e640">close</a>();
        while ( history.count() &gt; 20 )
            history.remove( history.begin() );
    }
}

void <a name="144"></a>HelpWindow::readBookmarks()
{
    if ( <a href="qfile.html#900285">QFile::exists</a>( <a href="qdir.html#2ec6fd">QDir::currentDirPath</a>() + "/.bookmarks" ) ) {
        <a href="qfile.html">QFile</a> f( <a href="qdir.html#2ec6fd">QDir::currentDirPath</a>() + "/.bookmarks" );
        f.<a href="qfile.html#255995">open</a>( IO_ReadOnly );
        <a href="qdatastream.html">QDataStream</a> s( &amp;f );
        s &gt;&gt; bookmarks;
        f.<a href="qfile.html#64e640">close</a>();
    }
}

void <a name="145"></a>HelpWindow::histChosen( int i )
{
    if ( mHistory.contains( i ) )
        browser-&gt;setSource( mHistory[ i ] );
}

void <a name="146"></a>HelpWindow::bookmChosen( int i )
{
    if ( mBookmarks.contains( i ) )
        browser-&gt;setSource( mBookmarks[ i ] );
}

void <a name="147"></a>HelpWindow::addBookmark()
{
    mBookmarks[ bookm-&gt;insertItem( <a href="qwidget.html#f852bc">caption</a>() ) ] = caption();
}
</pre>


  <hr>

/*! \example qdir/qdir.cpp

  <h1 align=center>QDir</h1><br clear="all">

  ???

  <hr>

  Main:
<pre>/****************************************************************************
** &#36;Id&#58; qt/examples/helpviewer/main.cpp   2.3.8   edited 2004-05-12 $
**
** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
**
** This file is part of an example program for Qt.  This example
** program may be used, distributed and modified without limitation.
**
*****************************************************************************/

#include "helpwindow.h"
#include &lt;<a name="qapplication.h"></a><a href="qapplication-h.html">qapplication.h</a>&gt;
#include &lt;<a name="qwindowsstyle.h"></a><a href="qwindowsstyle-h.html">qwindowsstyle.h</a>&gt;
#include &lt;<a name="qstylesheet.h"></a><a href="qstylesheet-h.html">qstylesheet.h</a>&gt;
#include &lt;stdlib.h&gt;

int main( int argc, char ** argv )
{
    <a name="QApplication::setColorSpec"></a><a href="qapplication.html#1ee2d1">QApplication::setColorSpec</a>( QApplication::ManyColor );
    <a name="QApplication"></a><a href="qapplication.html">QApplication</a> a(argc, argv);

    <a name="QString"></a><a href="qstring.html">QString</a> home;
    if (argc &gt; 1)
        home = argv[1];
    else
        home = QString(getenv("QTDIR")) + "/doc/html/index.html";

    HelpWindow *help = new HelpWindow(home, ".", 0, "help viewer");
    help-&gt;<a name="setCaption"></a><a href="qwidget.html#d6a291">setCaption</a>("Qt Example - Helpviewer");
    if ( <a name="QApplication::desktop"></a><a href="qapplication.html#d8ed8c">QApplication::desktop</a>()-&gt;width() &gt; 400
         &amp;&amp; <a href="qapplication.html#d8ed8c">QApplication::desktop</a>()-&gt;height() &gt; 500 )
        help-&gt;<a name="show"></a><a href="qmainwindow.html#eb53e3">show</a>();
    else
        help-&gt;<a name="showMaximized"></a><a href="qwidget.html#b6e000">showMaximized</a>();

    <a name="QObject::connect"></a><a href="qobject.html#7f8e37">QObject::connect</a>( &amp;a, SIGNAL(lastWindowClosed()),
                      &amp;a, SLOT(quit()) );

    return a.<a name="exec"></a><a href="qapplication.html#84c7bf">exec</a>();
}
</pre>
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