class_qwt_double_range.html

QWT5.01用于Qt开发的二维图形库程序

<p>
Adjust the value to the closest point in the step raster. 
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<dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>x</em>&nbsp;</td><td>value </td></tr>
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<dl compact><dt><b>Warning:</b></dt><dd>The value is clipped when it lies outside the range. When the range is <a class="el" href="class_qwt_double_range.html#d1efbcbf29dbc74f3f378292b76b007b">QwtDoubleRange::periodic</a>, it will be mapped to a point in the interval such that <div class="fragment"><pre class="fragment">new value := x + n * (max. value - min. value)</pre></div> with an integer number n. </dd></dl>

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Reimplemented in <a class="el" href="class_qwt_abstract_slider.html#50ed1e265beaa1c8adbe718caa023e50">QwtAbstractSlider</a>.
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Definition at line <a class="el" href="qwt__double__range_8cpp-source.html#l00132">132</a> of file <a class="el" href="qwt__double__range_8cpp-source.html">qwt_double_range.cpp</a>.
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Referenced by <a class="el" href="qwt__abstract__slider_8cpp-source.html#l00550">QwtAbstractSlider::fitValue()</a>, <a class="el" href="qwt__abstract__slider_8cpp-source.html#l00196">QwtAbstractSlider::mouseReleaseEvent()</a>, <a class="el" href="qwt__abstract__slider_8cpp-source.html#l00276">QwtAbstractSlider::setPosition()</a>, and <a class="el" href="qwt__abstract__slider_8cpp-source.html#l00417">QwtAbstractSlider::timerEvent()</a>.    </td>
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<a class="anchor" name="19b85337d4ab0b5f0579b02e4fb29a8f"></a><!-- doxytag: member="QwtDoubleRange::incPages" ref="19b85337d4ab0b5f0579b02e4fb29a8f" args="(int)" --><p>
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          <td class="md" nowrap valign="top">void QwtDoubleRange::incPages           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">int&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>nPages</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap><code> [virtual]</code></td>
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<p>
Increment the value by a specified number of pages. 
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<dl compact><dt><b>Parameters:</b></dt><dd>
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    <tr><td valign="top"></td><td valign="top"><em>nPages</em>&nbsp;</td><td>Number of pages to increment. A negative number decrements the value. </td></tr>
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<dl compact><dt><b>Warning:</b></dt><dd>The Page size is specified in the constructor. </dd></dl>

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Definition at line <a class="el" href="qwt__double__range_8cpp-source.html#l00271">271</a> of file <a class="el" href="qwt__double__range_8cpp-source.html">qwt_double_range.cpp</a>.
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References <a class="el" href="qwt__double__range_8cpp-source.html#l00051">isValid()</a>.
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Referenced by <a class="el" href="qwt__abstract__slider_8cpp-source.html#l00196">QwtAbstractSlider::mouseReleaseEvent()</a>, <a class="el" href="qwt__abstract__slider_8cpp-source.html#l00417">QwtAbstractSlider::timerEvent()</a>, and <a class="el" href="qwt__abstract__slider_8cpp-source.html#l00336">QwtAbstractSlider::wheelEvent()</a>.    </td>
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<a class="anchor" name="299c35c72e9b69f5a0e3dcd2b7da775b"></a><!-- doxytag: member="QwtDoubleRange::incValue" ref="299c35c72e9b69f5a0e3dcd2b7da775b" args="(int)" --><p>
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          <td class="md" nowrap valign="top">void QwtDoubleRange::incValue           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">int&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>nSteps</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap><code> [virtual]</code></td>
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<p>
Increment the value by a specified number of steps. 
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<dl compact><dt><b>Parameters:</b></dt><dd>
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    <tr><td valign="top"></td><td valign="top"><em>nSteps</em>&nbsp;</td><td>Number of steps to increment </td></tr>
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<dl compact><dt><b>Warning:</b></dt><dd>As a result of this operation, the new value will always be adjusted to the step raster. </dd></dl>

<p>
Reimplemented in <a class="el" href="class_qwt_abstract_slider.html#5fccdb2ca370bba9ed4d29864fd80788">QwtAbstractSlider</a>.
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Definition at line <a class="el" href="qwt__double__range_8cpp-source.html#l00259">259</a> of file <a class="el" href="qwt__double__range_8cpp-source.html">qwt_double_range.cpp</a>.
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References <a class="el" href="qwt__double__range_8cpp-source.html#l00051">isValid()</a>.
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Referenced by <a class="el" href="qwt__abstract__slider_8cpp-source.html#l00562">QwtAbstractSlider::incValue()</a>, <a class="el" href="qwt__dial_8cpp-source.html#l01187">QwtDial::keyPressEvent()</a>, and <a class="el" href="qwt__counter_8cpp-source.html#l00236">QwtCounter::keyPressEvent()</a>.    </td>
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<a class="anchor" name="fc4921deb3f68a64cc08b0654a040bc6"></a><!-- doxytag: member="QwtDoubleRange::isValid" ref="fc4921deb3f68a64cc08b0654a040bc6" args="() const " --><p>
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          <td class="md" nowrap valign="top">bool QwtDoubleRange::isValid           </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> const</td>
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<p>
Indicates if the value is valid. 
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<p>
Reimplemented in <a class="el" href="class_qwt_abstract_slider.html#87c750f098cb5f70306a7908339cb88e">QwtAbstractSlider</a>.
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Definition at line <a class="el" href="qwt__double__range_8cpp-source.html#l00051">51</a> of file <a class="el" href="qwt__double__range_8cpp-source.html">qwt_double_range.cpp</a>.
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Referenced by <a class="el" href="qwt__double__range_8cpp-source.html#l00271">incPages()</a>, <a class="el" href="qwt__double__range_8cpp-source.html#l00259">incValue()</a>, and <a class="el" href="qwt__abstract__slider_8h-source.html#l00087">QwtAbstractSlider::isValid()</a>.    </td>
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<a class="anchor" name="215275a1a8b4218a424ee8444c7fe409"></a><!-- doxytag: member="QwtDoubleRange::maxValue" ref="215275a1a8b4218a424ee8444c7fe409" args="() const " --><p>
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          <td class="md" nowrap valign="top">double QwtDoubleRange::maxValue           </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> const</td>
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<p>
Returns the value of the second border of the range. 
<p>
maxValue returns the value which has been specified as the second parameter in <a class="el" href="class_qwt_double_range.html#43891011664b74b8e5454763a3f5ff21">QwtDoubleRange::setRange</a>.<p>
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_double_range.html#43891011664b74b8e5454763a3f5ff21">QwtDoubleRange::setRange()</a> </dd></dl>

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Definition at line <a class="el" href="qwt__double__range_8cpp-source.html#l00326">326</a> of file <a class="el" href="qwt__double__range_8cpp-source.html">qwt_double_range.cpp</a>.
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Referenced by <a class="el" href="qwt__dial_8cpp-source.html#l00572">QwtDial::drawContents()</a>, <a class="el" href="qwt__wheel_8cpp-source.html#l00375">QwtWheel::drawWheel()</a>, <a class="el" href="qwt__wheel_8cpp-source.html#l00494">QwtWheel::getValue()</a>, <a class="el" href="qwt__dial_8cpp-source.html#l01052">QwtDial::getValue()</a>, <a class="el" href="qwt__dial_8cpp-source.html#l01187">QwtDial::keyPressEvent()</a>, <a class="el" href="qwt__counter_8cpp-source.html#l00236">QwtCounter::keyPressEvent()</a>, <a class="el" href="qwt__counter_8cpp-source.html#l00574">QwtCounter::maxVal()</a>, <a class="el" href="qwt__slider_8cpp-source.html#l00692">QwtSlider::rangeChange()</a>, <a class="el" href="qwt__counter_8cpp-source.html#l00568">QwtCounter::setMinValue()</a>, <a class="el" href="qwt__counter_8cpp-source.html#l00513">QwtCounter::sizeHint()</a>, and <a class="el" href="qwt__dial_8cpp-source.html#l00811">QwtDial::updateScale()</a>.    </td>
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<a class="anchor" name="8b8650a6f8a96144d3af21207ee71637"></a><!-- doxytag: member="QwtDoubleRange::minValue" ref="8b8650a6f8a96144d3af21207ee71637" args="() const " --><p>
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          <td class="md" nowrap valign="top">double QwtDoubleRange::minValue           </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> const</td>
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<p>
Returns the value at the first border of the range. 
<p>
minValue returns the value which has been specified as the first parameter in <a class="el" href="class_qwt_double_range.html#43891011664b74b8e5454763a3f5ff21">setRange()</a>.<p>
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_double_range.html#43891011664b74b8e5454763a3f5ff21">QwtDoubleRange::setRange()</a> </dd></dl>

<p>
Definition at line <a class="el" href="qwt__double__range_8cpp-source.html#l00339">339</a> of file <a class="el" href="qwt__double__range_8cpp-source.html">qwt_double_range.cpp</a>.
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Referenced by <a class="el" href="qwt__dial_8cpp-source.html#l00572">QwtDial::drawContents()</a>, <a class="el" href="qwt__wheel_8cpp-source.html#l00375">QwtWheel::drawWheel()</a>, <a class="el" href="qwt__wheel_8cpp-source.html#l00494">QwtWheel::getValue()</a>, <a class="el" href="qwt__dial_8cpp-source.html#l01052">QwtDial::getValue()</a>, <a class="el" href="qwt__dial_8cpp-source.html#l01187">QwtDial::keyPressEvent()</a>, <a class="el" href="qwt__counter_8cpp-source.html#l00236">QwtCounter::keyPressEvent()</a>, <a class="el" href="qwt__counter_8cpp-source.html#l00562">QwtCounter::minVal()</a>, <a class="el" href="qwt__slider_8cpp-source.html#l00692">QwtSlider::rangeChange()</a>, <a class="el" href="qwt__counter_8cpp-source.html#l00580">QwtCounter::setMaxValue()</a>, <a class="el" href="qwt__counter_8cpp-source.html#l00513">QwtCounter::sizeHint()</a>, and <a class="el" href="qwt__dial_8cpp-source.html#l00811">QwtDial::updateScale()</a>.    </td>
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<a class="anchor" name="c12a5c43dc5839913379982ec40a39d8"></a><!-- doxytag: member="QwtDoubleRange::pageSize" ref="c12a5c43dc5839913379982ec40a39d8" args="() const " --><p>
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          <td class="md" nowrap valign="top">int QwtDoubleRange::pageSize           </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> const</td>
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<p>
Returns the page size in steps. 
<p>

<p>
Definition at line <a class="el" href="qwt__double__range_8cpp-source.html#l00354">354</a> of file <a class="el" href="qwt__double__range_8cpp-source.html">qwt_double_range.cpp</a>.
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Referenced by <a class="el" href="qwt__dial_8cpp-source.html#l01187">QwtDial::keyPressEvent()</a>.    </td>
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<a class="anchor" name="d1efbcbf29dbc74f3f378292b76b007b"></a><!-- doxytag: member="QwtDoubleRange::periodic" ref="d1efbcbf29dbc74f3f378292b76b007b" args="() const " --><p>