class_qwt_picker.html

QWT5.01用于Qt开发的二维图形库程序

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<p>
Constructor<p>
Creates an picker that is enabled, but where selection flag is set to NoSelection, rubberband and tracker are disabled.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
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    <tr><td valign="top"></td><td valign="top"><em>parent</em>&nbsp;</td><td>Parent widget, that will be observed </td></tr>
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<p>
Definition at line <a class="el" href="qwt__picker_8cpp-source.html#l00185">185</a> of file <a class="el" href="qwt__picker_8cpp-source.html">qwt_picker.cpp</a>.    </td>
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<a class="anchor" name="d02f607bedf6ef3630f931fc6712db2f"></a><!-- doxytag: member="QwtPicker::QwtPicker" ref="d02f607bedf6ef3630f931fc6712db2f" args="(int selectionFlags, RubberBand rubberBand, DisplayMode trackerMode, QWidget *)" --><p>
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          <td class="md" nowrap valign="top">QwtPicker::QwtPicker           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">int&nbsp;</td>
          <td class="mdname" nowrap> <em>selectionFlags</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap><a class="el" href="class_qwt_picker.html#b36c79d8ff20aba5b778d2823c1f7894">RubberBand</a>&nbsp;</td>
          <td class="mdname" nowrap> <em>rubberBand</em>, </td>
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          <td class="md" nowrap align="right"></td>
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          <td class="md" nowrap><a class="el" href="class_qwt_picker.html#01be4d404ffc3a7b238b0d0aaeb66b93">DisplayMode</a>&nbsp;</td>
          <td class="mdname" nowrap> <em>trackerMode</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap>QWidget *&nbsp;</td>
          <td class="mdname" nowrap> <em>parent</em></td>
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          <td class="md">)&nbsp;</td>
          <td class="md" colspan="2"><code> [explicit]</code></td>
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<p>
Constructor<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
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    <tr><td valign="top"></td><td valign="top"><em>selectionFlags</em>&nbsp;</td><td>Or'd value of SelectionType, RectSelectionType and SelectionMode </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>rubberBand</em>&nbsp;</td><td>Rubberband style </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>trackerMode</em>&nbsp;</td><td>Tracker mode </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>parent</em>&nbsp;</td><td>Parent widget, that will be observed </td></tr>
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<p>
Definition at line <a class="el" href="qwt__picker_8cpp-source.html#l00200">200</a> of file <a class="el" href="qwt__picker_8cpp-source.html">qwt_picker.cpp</a>.    </td>
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<a class="anchor" name="5d0906a0d3b12e0e44499f855cb9dab1"></a><!-- doxytag: member="QwtPicker::~QwtPicker" ref="5d0906a0d3b12e0e44499f855cb9dab1" args="()" --><p>
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          <td class="md" nowrap valign="top">QwtPicker::~QwtPicker           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap><code> [virtual]</code></td>
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<p>
Destructor. 
<p>

<p>
Definition at line <a class="el" href="qwt__picker_8cpp-source.html#l00208">208</a> of file <a class="el" href="qwt__picker_8cpp-source.html">qwt_picker.cpp</a>.    </td>
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<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="c59b7fde6b198f76ea91b4b1a4015af5"></a><!-- doxytag: member="QwtPicker::accept" ref="c59b7fde6b198f76ea91b4b1a4015af5" args="(QwtPolygon &amp;selection) const " --><p>
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          <td class="md" nowrap valign="top">bool QwtPicker::accept           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">QwtPolygon &amp;&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>selection</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap> const<code> [protected, virtual]</code></td>
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<p>
Validate and fixup the selection. 
<p>
Accepts all selections unmodified<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
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    <tr><td valign="top"></td><td valign="top"><em>selection</em>&nbsp;</td><td>Selection to validate and fixup </td></tr>
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<dl compact><dt><b>Returns:</b></dt><dd>true, when accepted, false otherwise </dd></dl>

<p>
Reimplemented in <a class="el" href="class_qwt_plot_zoomer.html#86898c6696ee0706a3ac6b61018a112e">QwtPlotZoomer</a>.
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Definition at line <a class="el" href="qwt__picker_8cpp-source.html#l01184">1184</a> of file <a class="el" href="qwt__picker_8cpp-source.html">qwt_picker.cpp</a>.
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Referenced by <a class="el" href="qwt__picker_8cpp-source.html#l01108">end()</a>.    </td>
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<a class="anchor" name="5dd2e0ce6b2a6cc50e345ec13aef9255"></a><!-- doxytag: member="QwtPicker::append" ref="5dd2e0ce6b2a6cc50e345ec13aef9255" args="(const QPoint &amp;)" --><p>
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          <td class="md" nowrap valign="top">void QwtPicker::append           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">const QPoint &amp;&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>pos</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap><code> [protected, virtual]</code></td>
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<p>
Append a point to the selection and update rubberband and tracker. The <a class="el" href="class_qwt_picker.html#d52219271a7c8efab35ded14ac89827a">appended()</a> signal is emitted.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
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    <tr><td valign="top"></td><td valign="top"><em>pos</em>&nbsp;</td><td>Additional point</td></tr>
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<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_picker.html#f825f383c74928d1541f139e102983f9">isActive</a>, <a class="el" href="class_qwt_picker.html#49cb19aea451e275c5d376235e5a1d83">begin()</a>, <a class="el" href="class_qwt_picker.html#d258c518257cf2f52326905a36efb0c4">end()</a>, <a class="el" href="class_qwt_picker.html#59d92670978f200edb61e429afa06542">move()</a>, <a class="el" href="class_qwt_picker.html#d52219271a7c8efab35ded14ac89827a">appended()</a> </dd></dl>

<p>
Reimplemented in <a class="el" href="class_qwt_plot_picker.html#86a68e8ea235b9514084b729c75803ea">QwtPlotPicker</a>.
<p>
Definition at line <a class="el" href="qwt__picker_8cpp-source.html#l01143">1143</a> of file <a class="el" href="qwt__picker_8cpp-source.html">qwt_picker.cpp</a>.
<p>
References <a class="el" href="class_qwt_picker.html#d52219271a7c8efab35ded14ac89827a">appended()</a>, and <a class="el" href="qwt__picker_8cpp-source.html#l01281">updateDisplay()</a>.
<p>
Referenced by <a class="el" href="qwt__plot__picker_8cpp-source.html#l00244">QwtPlotPicker::append()</a>.    </td>
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<a class="anchor" name="d52219271a7c8efab35ded14ac89827a"></a><!-- doxytag: member="QwtPicker::appended" ref="d52219271a7c8efab35ded14ac89827a" args="(const QPoint &amp;pos)" --><p>
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          <td class="md" nowrap valign="top">void QwtPicker::appended           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">const QPoint &amp;&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>pos</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap><code> [signal]</code></td>
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