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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<title>GypsyTime</title>
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<th width="100%" align="center">Gypsy Reference Manual</th>
<td> </td>
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<tr><td colspan="5" class="shortcuts">
<a href="#gypsy-GypsyTime.synopsis" class="shortcut">Top</a>
                   | 
                  <a href="#gypsy-GypsyTime.description" class="shortcut">Description</a>
</td></tr>
</table>
<div class="refentry" title="GypsyTime">
<a name="gypsy-GypsyTime"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="gypsy-GypsyTime.top_of_page"></a>GypsyTime</span></h2>
<p>GypsyTime — Object for obtaining GPS time from gypsy-daemon</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv" title="Synopsis">
<a name="gypsy-GypsyTime.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">                    <a class="link" href="gypsy-GypsyTime.html#GypsyTime" title="GypsyTime">GypsyTime</a>;
#define             <a class="link" href="gypsy-GypsyTime.html#GYPSY-TIME-DBUS-SERVICE:CAPS" title="GYPSY_TIME_DBUS_SERVICE">GYPSY_TIME_DBUS_SERVICE</a>
#define             <a class="link" href="gypsy-GypsyTime.html#GYPSY-TIME-DBUS-INTERFACE:CAPS" title="GYPSY_TIME_DBUS_INTERFACE">GYPSY_TIME_DBUS_INTERFACE</a>
<a class="link" href="gypsy-GypsyTime.html#GypsyTime" title="GypsyTime"><span class="returnvalue">GypsyTime</span></a> *         <a class="link" href="gypsy-GypsyTime.html#gypsy-time-new" title="gypsy_time_new ()">gypsy_time_new</a>                      (<em class="parameter"><code>const <span class="type">char</span> *object_path</code></em>);
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            <a class="link" href="gypsy-GypsyTime.html#gypsy-time-get-time" title="gypsy_time_get_time ()">gypsy_time_get_time</a>                 (<em class="parameter"><code><a class="link" href="gypsy-GypsyTime.html#GypsyTime" title="GypsyTime"><span class="type">GypsyTime</span></a> *gps_time</code></em>,
                                                         <em class="parameter"><code><span class="type">int</span> *timestamp</code></em>,
                                                         <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);
</pre>
</div>
<div class="refsect1" title="Description">
<a name="gypsy-GypsyTime.description"></a><h2>Description</h2>
<p>
<a class="link" href="gypsy-GypsyTime.html#GypsyTime" title="GypsyTime"><span class="type">GypsyTime</span></a> is used whenever the client program wishes to know about
GPS time changes. It can report the current GPS time, and has a signal
to notify listeners of changes.
</p>
<p>
A <a class="link" href="gypsy-GypsyTime.html#GypsyTime" title="GypsyTime"><span class="type">GypsyTime</span></a> object is created with <a class="link" href="gypsy-GypsyTime.html#gypsy-time-new" title="gypsy_time_new ()"><code class="function">gypsy_time_new()</code></a> using the 
D-Bus path of the GPS device. This path is returned from the 
<a class="link" href="gypsy-gypsy-control.html#gypsy-control-create" title="gypsy_control_create ()"><code class="function">gypsy_control_create()</code></a> function. The client can then find out about the
GPS time with <a class="link" href="gypsy-GypsyTime.html#gypsy-time-get-time" title="gypsy_time_get_time ()"><code class="function">gypsy_time_get_time()</code></a>.
</p>
<p>
As the GPS time information changes <a class="link" href="gypsy-GypsyTime.html#GypsyTime" title="GypsyTime"><span class="type">GypsyTime</span></a> will emit the 
time-changed signal. This signal contains the GPS time of the most recent
GPS update that it received.
</p>
<p>
</p>
<div class="informalexample">
  <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
    <tbody>
      <tr>
        <td class="listing_lines" align="right"><pre>1
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17</pre></td>
        <td class="listing_code"><pre class="programlisting">GypsyTime <span class="symbol">*</span>gps_time<span class="symbol">;</span>
GError <span class="symbol">*</span>error <span class="symbol">=</span> NULL<span class="symbol">;</span>

<span class="symbol">. . .</span>

<span class="comment">/* path comes from the gypsy_control_create() function */</span>
gps_time <span class="symbol">=</span> <span class="function"><a href="gypsy-GypsyTime.html#gypsy-time-new">gypsy_time_new</a></span> <span class="symbol">(</span>path<span class="symbol">);</span>
<span class="function"><a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#g-signal-connect">g_signal_connect</a></span> <span class="symbol">(</span>gps_time<span class="symbol">,</span> <span class="string">&quot;time-changed&quot;</span><span class="symbol">,</span> <span class="function"><a href="/usr/share/gtk-doc/html/gobject/gobject-Closures.html#G-CALLBACK:CAPS">G_CALLBACK</a></span> <span class="symbol">(</span>time_changed<span class="symbol">),</span> NULL<span class="symbol">);</span>

<span class="symbol">. . .</span>

<span class="gtkdoc kwb">static void</span> <span class="function">position_changed</span> <span class="symbol">(</span>GypsyTime <span class="symbol">*</span>gps_time<span class="symbol">,</span> 
<span class="gtkdoc kwb">int</span> timestamp<span class="symbol">,</span>
gpointer userdata<span class="symbol">)</span>
<span class="symbol">{</span>
  <span class="function"><a href="/usr/share/gtk-doc/html/glib/glib-Warnings-and-Assertions.html#g-print">g_print</a></span> <span class="symbol">(</span><span class="string">&quot;timestamp: %d</span><span class="gtkdoc esc">\n</span><span class="string">&quot;</span><span class="symbol">,</span> timestamp<span class="symbol">);</span>
<span class="symbol">}</span></pre></td>
      </tr>
    </tbody>
  </table>
</div>

<p>
</p>
</div>
<div class="refsect1" title="Details">
<a name="gypsy-GypsyTime.details"></a><h2>Details</h2>
<div class="refsect2" title="GypsyTime">
<a name="GypsyTime"></a><h3>GypsyTime</h3>
<pre class="programlisting">typedef struct {
	GObject parent_object;
} GypsyTime;
</pre>
<p>
There are no public fields in <a class="link" href="gypsy-GypsyTime.html#GypsyTime" title="GypsyTime"><span class="type">GypsyTime</span></a>.
</p>
</div>
<hr>
<div class="refsect2" title="GYPSY_TIME_DBUS_SERVICE">
<a name="GYPSY-TIME-DBUS-SERVICE:CAPS"></a><h3>GYPSY_TIME_DBUS_SERVICE</h3>
<pre class="programlisting">#define GYPSY_TIME_DBUS_SERVICE "org.freedesktop.Gypsy"
</pre>
<p>
A define containing the address of the Time service
</p>
</div>
<hr>
<div class="refsect2" title="GYPSY_TIME_DBUS_INTERFACE">
<a name="GYPSY-TIME-DBUS-INTERFACE:CAPS"></a><h3>GYPSY_TIME_DBUS_INTERFACE</h3>
<pre class="programlisting">#define GYPSY_TIME_DBUS_INTERFACE "org.freedesktop.Gypsy.Time"
</pre>
<p>
A define containing the name of the Time interface
</p>
</div>
<hr>
<div class="refsect2" title="gypsy_time_new ()">
<a name="gypsy-time-new"></a><h3>gypsy_time_new ()</h3>
<pre class="programlisting"><a class="link" href="gypsy-GypsyTime.html#GypsyTime" title="GypsyTime"><span class="returnvalue">GypsyTime</span></a> *         gypsy_time_new                      (<em class="parameter"><code>const <span class="type">char</span> *object_path</code></em>);</pre>
<p>
Creates a new <a class="link" href="gypsy-GypsyTime.html#GypsyTime" title="GypsyTime"><span class="type">GypsyTime</span></a> object that listens for time changes
from the GPS found at <em class="parameter"><code>object_path</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>object_path</code></em> :</span></p></td>
<td>Object path to the GPS device
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> A <a class="link" href="gypsy-GypsyTime.html#GypsyTime" title="GypsyTime"><span class="type">GypsyTime</span></a> object
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" title="gypsy_time_get_time ()">
<a name="gypsy-time-get-time"></a><h3>gypsy_time_get_time ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            gypsy_time_get_time                 (<em class="parameter"><code><a class="link" href="gypsy-GypsyTime.html#GypsyTime" title="GypsyTime"><span class="type">GypsyTime</span></a> *gps_time</code></em>,
                                                         <em class="parameter"><code><span class="type">int</span> *timestamp</code></em>,
                                                         <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>
Obtains the current time, if known, from the GPS device.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>gps_time</code></em> :</span></p></td>
<td>A <a class="link" href="gypsy-GypsyTime.html#GypsyTime" title="GypsyTime"><span class="type">GypsyTime</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>timestamp</code></em> :</span></p></td>
<td>Pointer to store the timestamp
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>error</code></em> :</span></p></td>
<td>Pointer to store a <a href="/usr/share/gtk-doc/html/glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> TRUE on success, FALSE on error.
</td>
</tr>
</tbody>
</table></div>
</div>
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