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<page xmlns="http://projectmallard.org/1.0/"
type="topic"
id="progress">
<info>
<link type="guide" xref="index#dialogs"/>
<desc>Use the <cmd>--progress</cmd> option.</desc>
<include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude" />
</info>
<title>Progress Dialog</title>
<p>
Use the <cmd>--progress</cmd> option to create a progress dialog.
</p>
<p>
<app>Zenity</app> reads data from standard input line by line. If a line is prefixed with #, the text is updated with the text on that line. If a line contains only a number, the percentage is updated with that number.
</p>
<p>
The progress dialog supports the following options:
</p>
<terms>
<item>
<title><cmd>--text</cmd>=<var>text</var></title>
<p>Specifies the text that is displayed in the progress dialog.</p>
</item>
<item>
<title><cmd>--percentage</cmd>=<var>percentage</var></title>
<p>Specifies the initial percentage that is set in the progress dialog.</p>
</item>
<item>
<title><cmd>--auto-close</cmd></title>
<p>Closes the progress dialog when 100% has been reached.</p>
</item>
<item>
<title><cmd>--pulsate</cmd></title>
<p>Specifies that the progress bar pulsates until an EOF character is read from standard input.</p>
</item>
</terms>
<p>
The following example script shows how to create a progress dialog:
</p>
<code>
#!/bin/sh
(
echo "10" ; sleep 1
echo "# Updating mail logs" ; sleep 1
echo "20" ; sleep 1
echo "# Resetting cron jobs" ; sleep 1
echo "50" ; sleep 1
echo "This line will just be ignored" ; sleep 1
echo "75" ; sleep 1
echo "# Rebooting system" ; sleep 1
echo "100" ; sleep 1
) |
zenity --progress \
--title="Update System Logs" \
--text="Scanning mail logs..." \
--percentage=0
if [ "$?" = -1 ] ; then
zenity --error \
--text="Update canceled."
fi
</code>
<figure>
<title>Progress Dialog Example</title>
<desc><app>Zenity</app> progress dialog example</desc>
<media type="image" mime="image/png" src="figures/zenity-progress-screenshot.png"/>
</figure>
</page>
|
