<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/examples/table/statistics/statistics.doc:1 --> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <title>Table Example</title> <style type="text/css"><!-- fn { margin-left: 1cm; text-indent: -1cm; } a:link { color: #004faf; text-decoration: none } a:visited { color: #672967; text-decoration: none } body { background: #ffffff; color: black; } --></style> </head> <body> <table border="0" cellpadding="0" cellspacing="0" width="100%"> <tr bgcolor="#E5E5E5"> <td valign=center> <a href="index.html"> <font color="#004faf">Home</font></a> | <a href="classes.html"> <font color="#004faf">All Classes</font></a> | <a href="mainclasses.html"> <font color="#004faf">Main Classes</font></a> | <a href="annotated.html"> <font color="#004faf">Annotated</font></a> | <a href="groups.html"> <font color="#004faf">Grouped Classes</font></a> | <a href="functions.html"> <font color="#004faf">Functions</font></a> </td> <td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>Table Example</h1> <p> Another <a href="qtable.html">TQTable</a> example. <p> <hr> <p> Header file: <p> <pre>/**************************************************************************** ** $Id: qt/statistics.h 3.3.8 edited Jan 11 14:37 $ ** ** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved. ** ** This file is part of an example program for TQt. This example ** program may be used, distributed and modified without limitation. ** *****************************************************************************/ #ifndef STATISTICS_H #define STATISTICS_H #include <<a href="qtable-h.html">qtable.h</a>> #include <<a href="qcombobox-h.html">qcombobox.h</a>> class TableItem : public <a href="qtableitem.html">TQTableItem</a> { public: TableItem( <a href="qtable.html">TQTable</a> *t, EditType et, const <a href="qstring.html">TQString</a> &txt ) : <a href="qtableitem.html">TQTableItem</a>( t, et, txt ) {} void paint( <a href="qpainter.html">TQPainter</a> *p, const <a href="qcolorgroup.html">TQColorGroup</a> &cg, const <a href="qrect.html">TQRect</a> &cr, bool selected ); }; class ComboItem : public <a href="qtableitem.html">TQTableItem</a> { public: ComboItem( <a href="qtable.html">TQTable</a> *t, EditType et ); <a href="qwidget.html">TQWidget</a> *createEditor() const; void setContentFromEditor( <a href="qwidget.html">TQWidget</a> *w ); void setText( const <a href="qstring.html">TQString</a> &s ); private: <a href="qcombobox.html">TQComboBox</a> *cb; }; class Table : public <a href="qtable.html">TQTable</a> { <a href="metaobjects.html#Q_OBJECT">Q_OBJECT</a> public: Table(); void sortColumn( int col, bool ascending, bool wholeRows ); private slots: void recalcSum( int row, int col ); private: void initTable(); }; #endif </pre> <p> <hr> <p> Implementation: <p> <pre>/**************************************************************************** ** $Id: qt/statistics.cpp 3.3.8 edited Jan 11 14:37 $ ** ** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved. ** ** This file is part of an example program for TQt. This example ** program may be used, distributed and modified without limitation. ** *****************************************************************************/ #include "statistics.h" #include <<a href="qdir-h.html">qdir.h</a>> #include <<a href="qstringlist-h.html">qstringlist.h</a>> #include <<a href="qheader-h.html">qheader.h</a>> #include <<a href="qcombobox-h.html">qcombobox.h</a>> #include <stdlib.h> const char* dirs[] = { "kernel", "tools", "widgets", "dialogs", "xml", "table", "network", "opengl", "canvas", 0 }; <a name="f578"></a>Table::Table() : <a href="qtable.html">TQTable</a>( 10, 100, 0, "table" ) { <a href="qtable.html#setSorting">setSorting</a>( TRUE ); <a href="qtable.html#horizontalHeader">horizontalHeader</a>()->setLabel( 0, tr( "File" ) ); <a href="qtable.html#horizontalHeader">horizontalHeader</a>()->setLabel( 1, tr( "Size (bytes)" ) ); <a href="qtable.html#horizontalHeader">horizontalHeader</a>()->setLabel( 2, tr( "Use in Sum" ) ); initTable(); <a href="qtable.html#adjustColumn">adjustColumn</a>( 0 ); // if the user edited something we might need to recalculate the sum <a href="qobject.html#connect">connect</a>( this, SIGNAL( <a href="qtable.html#valueChanged">valueChanged</a>( int, int ) ), this, SLOT( recalcSum( int, int ) ) ); } void <a name="f579"></a>Table::initTable() { // read all the TQt source and header files into a list <a href="qstringlist.html">TQStringList</a> all; int i = 0; <a href="qstring.html">TQString</a> srcdir( "../../../src/" ); while ( dirs[ i ] ) { <a href="qdir.html">TQDir</a> dir( srcdir + dirs[ i ] ); <a name="x2780"></a> <a href="qstringlist.html">TQStringList</a> lst = dir.<a href="qdir.html#entryList">entryList</a>( "*.cpp; *.h" ); <a name="x2791"></a><a name="x2789"></a> for ( TQStringList::Iterator it = lst.<a href="qvaluelist.html#begin">begin</a>(); it != lst.<a href="qvaluelist.html#end">end</a>(); ++it ) { if ( ( *it ).contains( "moc" ) ) continue; all << (TQString( dirs[ i ] ) + "/" + *it); } ++i; } // set the number of rows we'll need for the table <a name="x2790"></a> <a href="qtable.html#setNumRows">setNumRows</a>( all.<a href="qvaluelist.html#count">count</a>() + 1 ); i = 0; int sum = 0; // insert the data into the table for ( TQStringList::Iterator it = all.<a href="qvaluelist.html#begin">begin</a>(); it != all.<a href="qvaluelist.html#end">end</a>(); ++it ) { <a href="qtable.html#setText">setText</a>( i, 0, *it ); <a href="qfile.html">TQFile</a> f( srcdir + *it ); <a name="x2781"></a> <a href="qtable.html#setText">setText</a>( i, 1, TQString::number( (ulong)f.<a href="qfile.html#size">size</a>() ) ); ComboItem *ci = new ComboItem( this, TQTableItem::WhenCurrent ); <a href="qtable.html#setItem">setItem</a>( i++, 2, ci ); sum += f.<a href="qfile.html#size">size</a>(); } // last row should show the sum TableItem *i1 = new TableItem( this, TQTableItem::Never, tr( "Sum" ) ); <a href="qtable.html#setItem">setItem</a>( i, 0, i1 ); TableItem *i2 = new TableItem( this, TQTableItem::Never, TQString::number( sum ) ); <a href="qtable.html#setItem">setItem</a>( i, 1, i2 ); } void <a name="f580"></a>Table::recalcSum( int, int col ) { // only recalc if a value in the second or third column changed if ( col < 1 || col > 2 ) return; // recalc sum int sum = 0; for ( int i = 0; i < numRows() - 1; ++i ) { if ( <a href="qtableitem.html#text">text</a>( i, 2 ) == "No" ) continue; sum += <a href="qtableitem.html#text">text</a>( i, 1 ).toInt(); } // insert calculated data TableItem *i1 = new TableItem( this, TQTableItem::Never, tr( "Sum" ) ); setItem( numRows() - 1, 0, i1 ); TableItem *i2 = new TableItem( this, TQTableItem::Never, TQString::number( sum ) ); setItem( numRows() - 1, 1, i2 ); } <a name="x2784"></a>void Table::<a href="qtable.html#sortColumn">sortColumn</a>( int col, bool ascending, bool /*wholeRows*/ ) { // sum row should not be sorted, so get rid of it for now clearCell( numRows() - 1, 0 ); clearCell( numRows() - 1, 1 ); // do sort TQTable::<a href="qtable.html#sortColumn">sortColumn</a>( col, ascending, TRUE ); // re-insert sum row recalcSum( 0, 1 ); } <a name="x2786"></a>void TableItem::<a href="qtableitem.html#paint">paint</a>( <a href="qpainter.html">TQPainter</a> *p, const <a href="qcolorgroup.html">TQColorGroup</a> &cg, const <a href="qrect.html">TQRect</a> &cr, bool selected ) { <a href="qcolorgroup.html">TQColorGroup</a> g( cg ); // last row is the sum row - we want to make it more visible by // using a red background if ( <a href="qtableitem.html#row">row</a>() == <a href="qtableitem.html#table">table</a>()->numRows() - 1 ) <a name="x2779"></a> g.<a href="qcolorgroup.html#setColor">setColor</a>( TQColorGroup::Base, red ); TQTableItem::<a href="qtableitem.html#paint">paint</a>( p, g, cr, selected ); } <a name="f577"></a>ComboItem::ComboItem( <a href="qtable.html">TQTable</a> *t, EditType et ) : <a href="qtableitem.html">TQTableItem</a>( t, et, "Yes" ), cb( 0 ) { // we do not want this item to be replaced <a href="qtableitem.html#setReplaceable">setReplaceable</a>( FALSE ); } <a name="x2785"></a>TQWidget *ComboItem::<a href="qtableitem.html#createEditor">createEditor</a>() const { // create an editor - a combobox in our case ( (ComboItem*)this )->cb = new <a href="qcombobox.html">TQComboBox</a>( <a href="qtableitem.html#table">table</a>()->viewport() ); TQObject::<a href="qobject.html#connect">connect</a>( cb, SIGNAL( activated( int ) ), table(), SLOT( doValueChanged() ) ); cb->insertItem( "Yes" ); cb->insertItem( "No" ); // and initialize it cb->setCurrentItem( <a href="qtableitem.html#text">text</a>() == "No" ? 1 : 0 ); return cb; } <a name="x2787"></a>void ComboItem::<a href="qtableitem.html#setContentFromEditor">setContentFromEditor</a>( <a href="qwidget.html">TQWidget</a> *w ) { // the user changed the value of the combobox, so synchronize the // value of the item (its text), with the value of the combobox <a name="x2783"></a> if ( w-><a href="qobject.html#inherits">inherits</a>( "TQComboBox" ) ) <a href="qtableitem.html#setText">setText</a>( ( (TQComboBox*)w )->currentText() ); else TQTableItem::<a href="qtableitem.html#setContentFromEditor">setContentFromEditor</a>( w ); } <a name="x2788"></a>void ComboItem::<a href="qtableitem.html#setText">setText</a>( const <a href="qstring.html">TQString</a> &s ) { if ( cb ) { // initialize the combobox from the text if ( s == "No" ) cb->setCurrentItem( 1 ); else cb->setCurrentItem( 0 ); } TQTableItem::<a href="qtableitem.html#setText">setText</a>( s ); } </pre> <p> <hr> <p> Main: <p> <pre>/**************************************************************************** ** $Id: qt/main.cpp 3.3.8 edited Jan 11 14:37 $ ** ** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved. ** ** This file is part of an example program for TQt. This example ** program may be used, distributed and modified without limitation. ** *****************************************************************************/ #include "statistics.h" #include <<a href="qapplication-h.html">qapplication.h</a>> int main( int argc, char **argv ) { <a href="qapplication.html">TQApplication</a> a(argc,argv); Table t; a.<a href="qapplication.html#setMainWidget">setMainWidget</a>( &t ); t.<a href="qwidget.html#show">show</a>(); return a.<a href="qapplication.html#exec">exec</a>(); } </pre> <p>See also <a href="table-examples.html">Table Examples</a>. <!-- eof --> <p><address><hr><div align=center> <table width=100% cellspacing=0 border=0><tr> <td>Copyright © 2007 <a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a> <td align=right><div align=right>TQt 3.3.8</div> </table></div></address></body> </html>