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<div class="title">QwtPickerDragLineMachine Class Reference</div> </div>
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<p>A state machine for line selections.
<a href="class_qwt_picker_drag_line_machine.html#details">More...</a></p>
<p><code>#include <<a class="el" href="qwt__picker__machine_8h_source.html">qwt_picker_machine.h</a>></code></p>
<div class="dynheader">
Inheritance diagram for QwtPickerDragLineMachine:</div>
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<area shape="rect" id="node2" href="class_qwt_picker_machine.html" title="A state machine for QwtPicker selections. " alt="" coords="33,5,167,32"/>
</map>
<center><span class="legend">[<a target="top" href="graph_legend.html">legend</a>]</span></center></div>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:acf3157352ff3d68fdd000e8a944467b3"><td class="memItemLeft" align="right" valign="top"><a id="acf3157352ff3d68fdd000e8a944467b3"></a>
 </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_picker_drag_line_machine.html#acf3157352ff3d68fdd000e8a944467b3">QwtPickerDragLineMachine</a> ()</td></tr>
<tr class="memdesc:acf3157352ff3d68fdd000e8a944467b3"><td class="mdescLeft"> </td><td class="mdescRight">Constructor. <br /></td></tr>
<tr class="separator:acf3157352ff3d68fdd000e8a944467b3"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a3896893cd1950d5a00eb1ce01861a24a"><td class="memItemLeft" align="right" valign="top"><a id="a3896893cd1950d5a00eb1ce01861a24a"></a>
virtual QList< <a class="el" href="class_qwt_picker_machine.html#a3a8d3d4c107ce5f8351e4cbdd38c43f7">Command</a> > </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_picker_drag_line_machine.html#a3896893cd1950d5a00eb1ce01861a24a">transition</a> (const <a class="el" href="class_qwt_event_pattern.html">QwtEventPattern</a> &, const QEvent *)</td></tr>
<tr class="memdesc:a3896893cd1950d5a00eb1ce01861a24a"><td class="mdescLeft"> </td><td class="mdescRight">Transition. <br /></td></tr>
<tr class="separator:a3896893cd1950d5a00eb1ce01861a24a"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="inherit_header pub_methods_class_qwt_picker_machine"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_class_qwt_picker_machine')"><img src="closed.png" alt="-"/> Public Member Functions inherited from <a class="el" href="class_qwt_picker_machine.html">QwtPickerMachine</a></td></tr>
<tr class="memitem:ab27bc3f70d48aa145db9ebbfdba34e15 inherit pub_methods_class_qwt_picker_machine"><td class="memItemLeft" align="right" valign="top"><a id="ab27bc3f70d48aa145db9ebbfdba34e15"></a>
 </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_picker_machine.html#ab27bc3f70d48aa145db9ebbfdba34e15">QwtPickerMachine</a> (<a class="el" href="class_qwt_picker_machine.html#a24a9faf12cfa5746eee839a2c0bb937d">SelectionType</a>)</td></tr>
<tr class="memdesc:ab27bc3f70d48aa145db9ebbfdba34e15 inherit pub_methods_class_qwt_picker_machine"><td class="mdescLeft"> </td><td class="mdescRight">Constructor. <br /></td></tr>
<tr class="separator:ab27bc3f70d48aa145db9ebbfdba34e15 inherit pub_methods_class_qwt_picker_machine"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aa1164dfb8ae6ac62fb3b6cb19efcb3e5 inherit pub_methods_class_qwt_picker_machine"><td class="memItemLeft" align="right" valign="top"><a id="aa1164dfb8ae6ac62fb3b6cb19efcb3e5"></a>
virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_picker_machine.html#aa1164dfb8ae6ac62fb3b6cb19efcb3e5">~QwtPickerMachine</a> ()</td></tr>
<tr class="memdesc:aa1164dfb8ae6ac62fb3b6cb19efcb3e5 inherit pub_methods_class_qwt_picker_machine"><td class="mdescLeft"> </td><td class="mdescRight">Destructor. <br /></td></tr>
<tr class="separator:aa1164dfb8ae6ac62fb3b6cb19efcb3e5 inherit pub_methods_class_qwt_picker_machine"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ace6daa55324a8daab3839cf8ba677a93 inherit pub_methods_class_qwt_picker_machine"><td class="memItemLeft" align="right" valign="top"><a id="ace6daa55324a8daab3839cf8ba677a93"></a>
void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_picker_machine.html#ace6daa55324a8daab3839cf8ba677a93">reset</a> ()</td></tr>
<tr class="memdesc:ace6daa55324a8daab3839cf8ba677a93 inherit pub_methods_class_qwt_picker_machine"><td class="mdescLeft"> </td><td class="mdescRight">Set the current state to 0. <br /></td></tr>
<tr class="separator:ace6daa55324a8daab3839cf8ba677a93 inherit pub_methods_class_qwt_picker_machine"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a36293ce5cc8fc0ca68740ba928e8f049 inherit pub_methods_class_qwt_picker_machine"><td class="memItemLeft" align="right" valign="top"><a id="a36293ce5cc8fc0ca68740ba928e8f049"></a>
int </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_picker_machine.html#a36293ce5cc8fc0ca68740ba928e8f049">state</a> () const</td></tr>
<tr class="memdesc:a36293ce5cc8fc0ca68740ba928e8f049 inherit pub_methods_class_qwt_picker_machine"><td class="mdescLeft"> </td><td class="mdescRight">Return the current state. <br /></td></tr>
<tr class="separator:a36293ce5cc8fc0ca68740ba928e8f049 inherit pub_methods_class_qwt_picker_machine"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a569c426543e4a6aa15c221eb7c4910f0 inherit pub_methods_class_qwt_picker_machine"><td class="memItemLeft" align="right" valign="top"><a id="a569c426543e4a6aa15c221eb7c4910f0"></a>
void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_picker_machine.html#a569c426543e4a6aa15c221eb7c4910f0">setState</a> (int)</td></tr>
<tr class="memdesc:a569c426543e4a6aa15c221eb7c4910f0 inherit pub_methods_class_qwt_picker_machine"><td class="mdescLeft"> </td><td class="mdescRight">Change the current state. <br /></td></tr>
<tr class="separator:a569c426543e4a6aa15c221eb7c4910f0 inherit pub_methods_class_qwt_picker_machine"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a9020aadf1a13436b4ea072b9ab57d112 inherit pub_methods_class_qwt_picker_machine"><td class="memItemLeft" align="right" valign="top"><a id="a9020aadf1a13436b4ea072b9ab57d112"></a>
<a class="el" href="class_qwt_picker_machine.html#a24a9faf12cfa5746eee839a2c0bb937d">SelectionType</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_picker_machine.html#a9020aadf1a13436b4ea072b9ab57d112">selectionType</a> () const</td></tr>
<tr class="memdesc:a9020aadf1a13436b4ea072b9ab57d112 inherit pub_methods_class_qwt_picker_machine"><td class="mdescLeft"> </td><td class="mdescRight">Return the selection type. <br /></td></tr>
<tr class="separator:a9020aadf1a13436b4ea072b9ab57d112 inherit pub_methods_class_qwt_picker_machine"><td class="memSeparator" colspan="2"> </td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="inherited"></a>
Additional Inherited Members</h2></td></tr>
<tr class="inherit_header pub_types_class_qwt_picker_machine"><td colspan="2" onclick="javascript:toggleInherit('pub_types_class_qwt_picker_machine')"><img src="closed.png" alt="-"/> Public Types inherited from <a class="el" href="class_qwt_picker_machine.html">QwtPickerMachine</a></td></tr>
<tr class="memitem:a24a9faf12cfa5746eee839a2c0bb937d inherit pub_types_class_qwt_picker_machine"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_picker_machine.html#a24a9faf12cfa5746eee839a2c0bb937d">SelectionType</a> { <a class="el" href="class_qwt_picker_machine.html#a24a9faf12cfa5746eee839a2c0bb937da326bcc03f7a99aa5970d875f3db46888">NoSelection</a> = -1,
<a class="el" href="class_qwt_picker_machine.html#a24a9faf12cfa5746eee839a2c0bb937dae65a34cc1ca5d818eb65c05b2484d855">PointSelection</a>,
<a class="el" href="class_qwt_picker_machine.html#a24a9faf12cfa5746eee839a2c0bb937da9f540e78958e8e238240584120e8af1d">RectSelection</a>,
<a class="el" href="class_qwt_picker_machine.html#a24a9faf12cfa5746eee839a2c0bb937dac74671ee5ba5d6fd0410f71db1aa3b97">PolygonSelection</a>
}</td></tr>
<tr class="separator:a24a9faf12cfa5746eee839a2c0bb937d inherit pub_types_class_qwt_picker_machine"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a3a8d3d4c107ce5f8351e4cbdd38c43f7 inherit pub_types_class_qwt_picker_machine"><td class="memItemLeft" align="right" valign="top"><a id="a3a8d3d4c107ce5f8351e4cbdd38c43f7"></a>enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_picker_machine.html#a3a8d3d4c107ce5f8351e4cbdd38c43f7">Command</a> { <br />
  <b>Begin</b>,
<b>Append</b>,
<b>Move</b>,
<b>Remove</b>,
<br />
  <b>End</b>
<br />
}</td></tr>
<tr class="memdesc:a3a8d3d4c107ce5f8351e4cbdd38c43f7"><td class="mdescLeft"> </td><td class="mdescRight">Commands - the output of a state machine. <br /></td></tr>
<tr class="separator:a3a8d3d4c107ce5f8351e4cbdd38c43f7 inherit pub_types_class_qwt_picker_machine"><td class="memSeparator" colspan="2"> </td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>A state machine for line selections. </p>
<p>Pressing <a class="el" href="class_qwt_event_pattern.html#af48dc808ac5e125eeed41a4c0285d1eaa5875976eba018ca30eb30ba92986d270">QwtEventPattern::MouseSelect1</a> selects the first point, releasing it the second point. Pressing <a class="el" href="class_qwt_event_pattern.html#a8fb57ceb9982d5583a1bf568e37d3007a32afc68b8e31079c00666a251d0b9c25" title="Qt::Key_Return. ">QwtEventPattern::KeySelect1</a> also selects the first point, a second press selects the second point and terminates the selection.</p>
<p>A common use case of <a class="el" href="class_qwt_picker_drag_line_machine.html" title="A state machine for line selections. ">QwtPickerDragLineMachine</a> are pickers for distance measurements.</p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_event_pattern.html#af48dc808ac5e125eeed41a4c0285d1ea" title="Symbolic mouse input codes. ">QwtEventPattern::MousePatternCode</a>, <a class="el" href="class_qwt_event_pattern.html#a8fb57ceb9982d5583a1bf568e37d3007" title="Symbolic keyboard input codes. ">QwtEventPattern::KeyPatternCode</a> </dd></dl>
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