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| author | Timothy Pearson <kb9vqf@pearsoncomputing.net> | 2011-07-10 15:24:15 -0500 |
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| committer | Timothy Pearson <kb9vqf@pearsoncomputing.net> | 2011-07-10 15:24:15 -0500 |
| commit | bd0f3345a938b35ce6a12f6150373b0955b8dd12 (patch) | |
| tree | 7a520322212d48ebcb9fbe1087e7fca28b76185c /doc/html/progressbar-example.html | |
| download | qt3-bd0f3345a938b35ce6a12f6150373b0955b8dd12.tar.gz qt3-bd0f3345a938b35ce6a12f6150373b0955b8dd12.zip | |
Add Qt3 development HEAD version
Diffstat (limited to 'doc/html/progressbar-example.html')
| -rw-r--r-- | doc/html/progressbar-example.html | 289 |
1 files changed, 289 insertions, 0 deletions
diff --git a/doc/html/progressbar-example.html b/doc/html/progressbar-example.html new file mode 100644 index 0000000..fcd3aea --- /dev/null +++ b/doc/html/progressbar-example.html @@ -0,0 +1,289 @@ +<!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/progressbar/progressbar.doc:5 --> +<html> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> +<title>Progress Bar</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>Progress Bar</h1> + + +<p> +This example shows how to use a progress bar. +<p> <hr> +<p> Header file: +<p> <pre>/**************************************************************************** +** $Id: qt/progressbar.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 Qt. This example +** program may be used, distributed and modified without limitation. +** +*****************************************************************************/ + +#ifndef PROGRESSBAR_H +#define PROGRESSBAR_H + +#include <<a href="qbuttongroup-h.html">qbuttongroup.h</a>> +#include <<a href="qtimer-h.html">qtimer.h</a>> + +class QRadioButton; +class QPushButton; +class QProgressBar; + +class ProgressBar : public <a href="qbuttongroup.html">QButtonGroup</a> +{ + <a href="metaobjects.html#Q_OBJECT">Q_OBJECT</a> + +public: + ProgressBar( <a href="qwidget.html">QWidget</a> *parent = 0, const char *name = 0 ); + +protected: + <a href="qradiobutton.html">QRadioButton</a> *slow, *normal, *fast; + <a href="qpushbutton.html">QPushButton</a> *start, *pause, *reset; + <a href="qprogressbar.html">QProgressBar</a> *progress; + <a href="qtimer.html">QTimer</a> timer; + +protected slots: + void slotStart(); + void slotReset(); + void slotTimeout(); + +}; + +#endif +</pre> + +<p> <hr> +<p> Implementation: +<p> <pre>/**************************************************************************** +** $Id: qt/progressbar.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 Qt. This example +** program may be used, distributed and modified without limitation. +** +*****************************************************************************/ + +#include "progressbar.h" + +#include <<a href="qradiobutton-h.html">qradiobutton.h</a>> +#include <<a href="qpushbutton-h.html">qpushbutton.h</a>> +#include <<a href="qprogressbar-h.html">qprogressbar.h</a>> +#include <<a href="qlayout-h.html">qlayout.h</a>> + +#include <<a href="qmotifstyle-h.html">qmotifstyle.h</a>> + +/* + * Constructor + * + * Creates child widgets of the ProgressBar widget + */ + +<a name="f346"></a>ProgressBar::ProgressBar( <a href="qwidget.html">QWidget</a> *parent, const char *name ) + : <a href="qbuttongroup.html">QButtonGroup</a>( 0, Horizontal, "Progress Bar", parent, name ), timer() +{ + <a href="qframe.html#setMargin">setMargin</a>( 10 ); + + <a href="qgridlayout.html">QGridLayout</a>* toplayout = new <a href="qgridlayout.html">QGridLayout</a>( <a href="qwidget.html#layout">layout</a>(), 2, 2, 5); + + <a href="qbuttongroup.html#setRadioButtonExclusive">setRadioButtonExclusive</a>( TRUE ); + + // insert three radiobuttons which the user can use + // to set the speed of the progress and two pushbuttons + // to start/pause/continue and reset the progress + slow = new <a href="qradiobutton.html">QRadioButton</a>( "S&low", this ); + normal = new <a href="qradiobutton.html">QRadioButton</a>( "&Normal", this ); + fast = new <a href="qradiobutton.html">QRadioButton</a>( "&Fast", this ); + <a href="qvboxlayout.html">QVBoxLayout</a>* vb1 = new <a href="qvboxlayout.html">QVBoxLayout</a>; +<a name="x964"></a> toplayout-><a href="qgridlayout.html#addLayout">addLayout</a>( vb1, 0, 0 ); + vb1-><a href="qboxlayout.html#addWidget">addWidget</a>( slow ); + vb1-><a href="qboxlayout.html#addWidget">addWidget</a>( normal ); + vb1-><a href="qboxlayout.html#addWidget">addWidget</a>( fast ); + + // two push buttons, one for start, for for reset. + start = new <a href="qpushbutton.html">QPushButton</a>( "&Start", this ); + reset = new <a href="qpushbutton.html">QPushButton</a>( "&Reset", this ); + <a href="qvboxlayout.html">QVBoxLayout</a>* vb2 = new <a href="qvboxlayout.html">QVBoxLayout</a>; + toplayout-><a href="qgridlayout.html#addLayout">addLayout</a>( vb2, 0, 1 ); + vb2-><a href="qboxlayout.html#addWidget">addWidget</a>( start ); + vb2-><a href="qboxlayout.html#addWidget">addWidget</a>( reset ); + + // Create the progressbar + progress = new <a href="qprogressbar.html">QProgressBar</a>( 100, this ); +<a name="x975"></a> // progress-><a href="qwidget.html#setStyle">setStyle</a>( new <a href="qmotifstyle.html">QMotifStyle</a>() ); +<a name="x965"></a> toplayout-><a href="qgridlayout.html#addMultiCellWidget">addMultiCellWidget</a>( progress, 1, 1, 0, 1 ); + + // connect the clicked() SIGNALs of the pushbuttons to SLOTs +<a name="x962"></a> <a href="qobject.html#connect">connect</a>( start, SIGNAL( <a href="qbutton.html#clicked">clicked</a>() ), this, SLOT( slotStart() ) ); + <a href="qobject.html#connect">connect</a>( reset, SIGNAL( <a href="qbutton.html#clicked">clicked</a>() ), this, SLOT( slotReset() ) ); + + // connect the timeout() SIGNAL of the progress-timer to a SLOT + <a href="qobject.html#connect">connect</a>( &timer, SIGNAL( timeout() ), this, SLOT( slotTimeout() ) ); + + // Let's start with normal speed... +<a name="x972"></a> normal-><a href="qradiobutton.html#setChecked">setChecked</a>( TRUE ); + + + // some contraints +<a name="x974"></a> start-><a href="qwidget.html#setFixedWidth">setFixedWidth</a>( 80 ); + <a href="qwidget.html#setMinimumWidth">setMinimumWidth</a>( 300 ); +} + +/* + * SLOT slotStart + * + * This SLOT is called if the user clicks start/pause/continue + * button + */ + +void <a name="f347"></a>ProgressBar::slotStart() +{ + // If the progress bar is at the beginning... +<a name="x966"></a> if ( progress-><a href="qprogressbar.html#progress">progress</a>() == -1 ) { + // ...set according to the checked speed-radiobutton + // the number of steps which are needed to complete the process +<a name="x971"></a> if ( slow-><a href="qradiobutton.html#isChecked">isChecked</a>() ) +<a name="x969"></a> progress-><a href="qprogressbar.html#setTotalSteps">setTotalSteps</a>( 10000 ); + else if ( normal-><a href="qradiobutton.html#isChecked">isChecked</a>() ) + progress-><a href="qprogressbar.html#setTotalSteps">setTotalSteps</a>( 1000 ); + else + progress-><a href="qprogressbar.html#setTotalSteps">setTotalSteps</a>( 50 ); + + // disable the speed-radiobuttons +<a name="x973"></a> slow-><a href="qwidget.html#setEnabled">setEnabled</a>( FALSE ); + normal-><a href="qwidget.html#setEnabled">setEnabled</a>( FALSE ); + fast-><a href="qwidget.html#setEnabled">setEnabled</a>( FALSE ); + } + + // If the progress is not running... + if ( !timer.isActive() ) { + // ...start the timer (and so the progress) with a interval of 1 ms... + timer.start( 1 ); + // ...and rename the start/pause/continue button to Pause +<a name="x963"></a> start-><a href="qbutton.html#setText">setText</a>( "&Pause" ); + } else { // if the prgress is running... + // ...stop the timer (and so the prgress)... + timer.stop(); + // ...and rename the start/pause/continue button to Continue + start-><a href="qbutton.html#setText">setText</a>( "&Continue" ); + } +} + +/* + * SLOT slotReset + * + * This SLOT is called when the user clicks the reset button + */ + +void <a name="f348"></a>ProgressBar::slotReset() +{ + // stop the timer and progress + timer.stop(); + + // rename the start/pause/continue button to Start... + start-><a href="qbutton.html#setText">setText</a>( "&Start" ); + // ...and enable this button + start-><a href="qwidget.html#setEnabled">setEnabled</a>( TRUE ); + + // enable the speed-radiobuttons + slow-><a href="qwidget.html#setEnabled">setEnabled</a>( TRUE ); + normal-><a href="qwidget.html#setEnabled">setEnabled</a>( TRUE ); + fast-><a href="qwidget.html#setEnabled">setEnabled</a>( TRUE ); + + // reset the progressbar +<a name="x967"></a> progress-><a href="qprogressbar.html#reset">reset</a>(); +} + +/* + * SLOT slotTimeout + * + * This SLOT is called each ms when the timer is + * active (== progress is running) + */ + +void <a name="f349"></a>ProgressBar::slotTimeout() +{ + int p = progress-><a href="qprogressbar.html#progress">progress</a>(); + +#if 1 + // If the progress is complete... +<a name="x970"></a> if ( p == progress-><a href="qprogressbar.html#totalSteps">totalSteps</a>() ) { + // ...rename the start/pause/continue button to Start... + start-><a href="qbutton.html#setText">setText</a>( "&Start" ); + // ...and disable it... + start-><a href="qwidget.html#setEnabled">setEnabled</a>( FALSE ); + // ...and return + return; + } +#endif + + // If the process is not complete increase it +<a name="x968"></a> progress-><a href="qprogressbar.html#setProgress">setProgress</a>( ++p ); +} +</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 Qt. This example +** program may be used, distributed and modified without limitation. +** +*****************************************************************************/ + +#include "progressbar.h" +#include <<a href="qapplication-h.html">qapplication.h</a>> + +int main(int argc,char **argv) +{ + <a href="qapplication.html">QApplication</a> a(argc,argv); + + ProgressBar progressbar; + progressbar.<a href="qwidget.html#setCaption">setCaption</a>("Qt Example - ProgressBar"); + a.<a href="qapplication.html#setMainWidget">setMainWidget</a>(&progressbar); + progressbar.<a href="qwidget.html#show">show</a>(); + + return a.<a href="qapplication.html#exec">exec</a>(); +} +</pre> + +<p>See also <a href="examples.html">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>Qt 3.3.8</div> +</table></div></address></body> +</html> |