class_qwt_plot_zoomer.html

QWT5.01用于Qt开发的二维图形库程序

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Limit zooming by a minimum rectangle. 
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<dl compact><dt><b>Returns:</b></dt><dd><a class="el" href="class_qwt_plot_zoomer.html#ec745fbace2e6d1e69e7d9be0368bd8e">zoomBase()</a>.width() / 10e4, <a class="el" href="class_qwt_plot_zoomer.html#ec745fbace2e6d1e69e7d9be0368bd8e">zoomBase()</a>.height() / 10e4 </dd></dl>

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Definition at line <a class="el" href="qwt__plot__zoomer_8cpp-source.html#l00531">531</a> of file <a class="el" href="qwt__plot__zoomer_8cpp-source.html">qwt_plot_zoomer.cpp</a>.
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Referenced by <a class="el" href="qwt__plot__zoomer_8cpp-source.html#l00497">accept()</a>, <a class="el" href="qwt__plot__zoomer_8cpp-source.html#l00545">begin()</a>, and <a class="el" href="qwt__plot__zoomer_8cpp-source.html#l00575">end()</a>.    </td>
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<a class="anchor" name="6bfbb67129b1220df65685858c9d882c"></a><!-- doxytag: member="QwtPlotZoomer::move" ref="6bfbb67129b1220df65685858c9d882c" args="(double x, double y)" --><p>
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          <td class="md" nowrap valign="top">void QwtPlotZoomer::move           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">double&nbsp;</td>
          <td class="mdname" nowrap> <em>x</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap>double&nbsp;</td>
          <td class="mdname" nowrap> <em>y</em></td>
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          <td class="md">)&nbsp;</td>
          <td class="md" colspan="2"><code> [virtual, slot]</code></td>
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<p>
Move the the current zoom rectangle.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
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    <tr><td valign="top"></td><td valign="top"><em>x</em>&nbsp;</td><td>X value </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>y</em>&nbsp;</td><td>Y value</td></tr>
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<dl compact><dt><b>See also:</b></dt><dd>QwtDoubleRect::move </dd></dl>
<dl compact><dt><b>Note:</b></dt><dd>The changed rectangle is limited by the zoom base </dd></dl>

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Definition at line <a class="el" href="qwt__plot__zoomer_8cpp-source.html#l00467">467</a> of file <a class="el" href="qwt__plot__zoomer_8cpp-source.html">qwt_plot_zoomer.cpp</a>.
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References <a class="el" href="qwt__plot__zoomer_8cpp-source.html#l00343">rescale()</a>, <a class="el" href="qwt__plot__zoomer_8cpp-source.html#l00190">zoomBase()</a>, and <a class="el" href="qwt__plot__zoomer_8cpp-source.html#l00258">zoomRect()</a>.
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Referenced by <a class="el" href="qwt__plot__zoomer_8cpp-source.html#l00452">moveBy()</a>.    </td>
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<a class="anchor" name="c66b3eac03db212812198637f4e233ca"></a><!-- doxytag: member="QwtPlotZoomer::moveBy" ref="c66b3eac03db212812198637f4e233ca" args="(double x, double y)" --><p>
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          <td class="md" nowrap valign="top">void QwtPlotZoomer::moveBy           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">double&nbsp;</td>
          <td class="mdname" nowrap> <em>dx</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap>double&nbsp;</td>
          <td class="mdname" nowrap> <em>dy</em></td>
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          <td class="md"></td>
          <td class="md">)&nbsp;</td>
          <td class="md" colspan="2"><code> [slot]</code></td>
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Move the current zoom rectangle.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
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    <tr><td valign="top"></td><td valign="top"><em>dx</em>&nbsp;</td><td>X offset </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>dy</em>&nbsp;</td><td>Y offset</td></tr>
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</dl>
<dl compact><dt><b>Note:</b></dt><dd>The changed rectangle is limited by the zoom base </dd></dl>

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Definition at line <a class="el" href="qwt__plot__zoomer_8cpp-source.html#l00452">452</a> of file <a class="el" href="qwt__plot__zoomer_8cpp-source.html">qwt_plot_zoomer.cpp</a>.
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References <a class="el" href="qwt__plot__zoomer_8cpp-source.html#l00467">move()</a>.    </td>
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<a class="anchor" name="0d0f90bbd5fe99d5231b3cee00fffabe"></a><!-- doxytag: member="QwtPlotZoomer::rescale" ref="0d0f90bbd5fe99d5231b3cee00fffabe" args="()" --><p>
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          <td class="md" nowrap valign="top">void QwtPlotZoomer::rescale           </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> [protected, virtual]</code></td>
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Adjust the observed plot to <a class="el" href="class_qwt_plot_zoomer.html#ef67ca3d673cbd6063f0574621c808ae">zoomRect()</a><p>
<dl compact><dt><b>Note:</b></dt><dd>Initiates <a class="el" href="class_qwt_plot.html#7b094e29b8e92b00e36517d0d7633c4b">QwtPlot::replot</a> </dd></dl>

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Definition at line <a class="el" href="qwt__plot__zoomer_8cpp-source.html#l00343">343</a> of file <a class="el" href="qwt__plot__zoomer_8cpp-source.html">qwt_plot_zoomer.cpp</a>.
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References <a class="el" href="qwt__plot_8cpp-source.html#l00195">QwtPlot::autoReplot()</a>, <a class="el" href="qwt__plot__axis_8cpp-source.html#l00223">QwtPlot::axisScaleDiv()</a>, <a class="el" href="qwt__scale__div_8h-source.html#l00086">QwtScaleDiv::hBound()</a>, <a class="el" href="qwt__scale__div_8h-source.html#l00077">QwtScaleDiv::lBound()</a>, <a class="el" href="qwt__plot__picker_8cpp-source.html#l00119">QwtPlotPicker::plot()</a>, <a class="el" href="qwt__plot__picker_8cpp-source.html#l00143">QwtPlotPicker::scaleRect()</a>, <a class="el" href="qwt__plot_8cpp-source.html#l00187">QwtPlot::setAutoReplot()</a>, <a class="el" href="qwt__plot__axis_8cpp-source.html#l00384">QwtPlot::setAxisScale()</a>, <a class="el" href="qwt__plot__picker_8cpp-source.html#l00183">QwtPlotPicker::xAxis()</a>, and <a class="el" href="qwt__plot__picker_8cpp-source.html#l00189">QwtPlotPicker::yAxis()</a>.
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Referenced by <a class="el" href="qwt__plot__zoomer_8cpp-source.html#l00467">move()</a>, <a class="el" href="qwt__plot__zoomer_8cpp-source.html#l00208">setZoomBase()</a>, and <a class="el" href="qwt__plot__zoomer_8cpp-source.html#l00282">zoom()</a>.    </td>
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<a class="anchor" name="6cb755e06b83e50e8353dd706f7fb6f0"></a><!-- doxytag: member="QwtPlotZoomer::setAxis" ref="6cb755e06b83e50e8353dd706f7fb6f0" args="(int xAxis, int yAxis)" --><p>
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          <td class="md" nowrap valign="top">void QwtPlotZoomer::setAxis           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">int&nbsp;</td>
          <td class="mdname" nowrap> <em>xAxis</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap>int&nbsp;</td>
          <td class="mdname" nowrap> <em>yAxis</em></td>
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          <td class="md"></td>
          <td class="md">)&nbsp;</td>
          <td class="md" colspan="2"><code> [virtual]</code></td>
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Reinitialize the axes, and set the zoom base to their scales.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
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    <tr><td valign="top"></td><td valign="top"><em>xAxis</em>&nbsp;</td><td>X axis </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>yAxis</em>&nbsp;</td><td>Y axis </td></tr>
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Reimplemented from <a class="el" href="class_qwt_plot_picker.html#a901c86543585c7056133a5cb6652e3d">QwtPlotPicker</a>.
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Definition at line <a class="el" href="qwt__plot__zoomer_8cpp-source.html#l00387">387</a> of file <a class="el" href="qwt__plot__zoomer_8cpp-source.html">qwt_plot_zoomer.cpp</a>.
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References <a class="el" href="qwt__plot__picker_8cpp-source.html#l00143">QwtPlotPicker::scaleRect()</a>, <a class="el" href="qwt__plot__picker_8cpp-source.html#l00169">QwtPlotPicker::setAxis()</a>, <a class="el" href="qwt__plot__zoomer_8cpp-source.html#l00208">setZoomBase()</a>, <a class="el" href="qwt__plot__picker_8cpp-source.html#l00183">QwtPlotPicker::xAxis()</a>, and <a class="el" href="qwt__plot__picker_8cpp-source.html#l00189">QwtPlotPicker::yAxis()</a>.    </td>
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<a class="anchor" name="3965591944793790407ba91d6de3a882"></a><!-- doxytag: member="QwtPlotZoomer::setMaxStackDepth" ref="3965591944793790407ba91d6de3a882" args="(int)" --><p>
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          <td class="md" nowrap valign="top">void QwtPlotZoomer::setMaxStackDepth           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">int&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>depth</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap></td>
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Limit the number of recursive zoom operations to depth.