uTools-Manuals/docs/java/javax/sound/sampled/FloatControl.html

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     javax.sound.sampled 
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<h2 class="title" title="Class FloatControl">Class FloatControl</h2>
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<li><a href="../../../javax/sound/sampled/Control.html" title="class in javax.sound.sampled">javax.sound.sampled.Control</a></li>
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<li>javax.sound.sampled.FloatControl</li>
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<hr/> <br/> <pre>public abstract class <span class="typeNameLabel">FloatControl</span>
extends <a href="../../../javax/sound/sampled/Control.html" title="class in javax.sound.sampled">Control</a></pre>
<div class="block">
<span>A <code>FloatControl</code>对象提供对一系列浮点值的控制。</span>
<span>浮动控件通常通过连续可调的对象（如滑块或旋钮）在图形用户界面中进行表示。</span>
<span>FloatControl的<code>FloatControl</code>子类实现了以应用程序可以操作的某种方式影响线路音频信号的控制（如增益和平移）。</span>
<span><code><a href="../../../javax/sound/sampled/FloatControl.Type.html" title="class in javax.sound.sampled"><code>FloatControl.Type</code></a></code>内部类提供了用于识别一些常见类型的浮点控件的类型的静态实例。</span>
<p> <span><code>FloatControl</code>抽象类提供了设置和获取控件当前浮点值的方法。</span> <span>其他方法可以获得值的可能范围和控制分辨率（返回值之间的最小增量）。</span> <span>一些浮动控件允许在指定的时间内斜坡上升到一个新的值。</span> <span><code>FloatControl</code>还包括返回控件的最小，最大和中点位置的字符串标签的方法。</span> </p>
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<dl>
<dt>
<span class="simpleTagLabel">从以下版本开始：</span>
</dt>
<dd>
         1.3 
       </dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/sound/sampled/Line.html#getControls--"><code>Line.getControls()</code></a> ， 
        <a href="../../../javax/sound/sampled/Line.html#isControlSupported-javax.sound.sampled.Control.Type-"><code>Line.isControlSupported(javax.sound.sampled.Control.Type)</code></a>
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<span>Nested Classes</span>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Class and Description</th>
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<td class="colFirst"><code>static class </code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/sound/sampled/FloatControl.Type.html" title="class in javax.sound.sampled">FloatControl.Type</a></span></code>
<div class="block">
<code>FloatControl.Type</code>内部类的实例标识一种浮点型控件。 
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<th class="colFirst" scope="col">Modifier</th>
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<td class="colFirst"><code>protected </code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/sound/sampled/FloatControl.html#FloatControl-javax.sound.sampled.FloatControl.Type-float-float-float-int-float-java.lang.String-">FloatControl</a></span>(<a href="../../../javax/sound/sampled/FloatControl.Type.html" title="class in javax.sound.sampled">FloatControl.Type</a> type, float minimum, float maximum, float precision, int updatePeriod, float initialValue, <a href="../../../java/lang/String.html" title="class in java.lang">String</a> units)</code>
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              使用给定的参数构造一个新的float控件对象。 
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<td class="colFirst"><code>protected </code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/sound/sampled/FloatControl.html#FloatControl-javax.sound.sampled.FloatControl.Type-float-float-float-int-float-java.lang.String-java.lang.String-java.lang.String-java.lang.String-">FloatControl</a></span>(<a href="../../../javax/sound/sampled/FloatControl.Type.html" title="class in javax.sound.sampled">FloatControl.Type</a> type, float minimum, float maximum, float precision, int updatePeriod, float initialValue, <a href="../../../java/lang/String.html" title="class in java.lang">String</a> units, <a href="../../../java/lang/String.html" title="class in java.lang">String</a> minLabel, <a href="../../../java/lang/String.html" title="class in java.lang">String</a> midLabel, <a href="../../../java/lang/String.html" title="class in java.lang">String</a> maxLabel)</code>
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              使用给定的参数构造一个新的float控件对象 
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<span class="activeTableTab" id="t0"><span>所有方法</span><span class="tabEnd"> </span></span>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<td class="colFirst"><code>float</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/sound/sampled/FloatControl.html#getMaximum--">getMaximum</a></span>()</code>
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              获得允许的最大值。 
            </div> </td>
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<tr class="rowColor" id="i1">
<td class="colFirst"><code><a href="../../../java/lang/String.html" title="class in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/sound/sampled/FloatControl.html#getMaxLabel--">getMaxLabel</a></span>()</code>
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              获取最大值的标签，例如“Right”或“Full”。 
            </div> </td>
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<tr class="altColor" id="i2">
<td class="colFirst"><code><a href="../../../java/lang/String.html" title="class in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/sound/sampled/FloatControl.html#getMidLabel--">getMidLabel</a></span>()</code>
<div class="block">
              获取中点值的标签，例如“中心”或“默认”。 
            </div> </td>
</tr>
<tr class="rowColor" id="i3">
<td class="colFirst"><code>float</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/sound/sampled/FloatControl.html#getMinimum--">getMinimum</a></span>()</code>
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              获得允许的最小值。 
            </div> </td>
</tr>
<tr class="altColor" id="i4">
<td class="colFirst"><code><a href="../../../java/lang/String.html" title="class in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/sound/sampled/FloatControl.html#getMinLabel--">getMinLabel</a></span>()</code>
<div class="block">
              获取最小值的标签，例如“左”或“关”。 
            </div> </td>
</tr>
<tr class="rowColor" id="i5">
<td class="colFirst"><code>float</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/sound/sampled/FloatControl.html#getPrecision--">getPrecision</a></span>()</code>
<div class="block">
              以控制措施的单位获得控制的决议或粒度。 
            </div> </td>
</tr>
<tr class="altColor" id="i6">
<td class="colFirst"><code><a href="../../../java/lang/String.html" title="class in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/sound/sampled/FloatControl.html#getUnits--">getUnits</a></span>()</code>
<div class="block">
              获取表示控件值的单位的标签，例如“dB”或“每秒帧数”。 
            </div> </td>
</tr>
<tr class="rowColor" id="i7">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/sound/sampled/FloatControl.html#getUpdatePeriod--">getUpdatePeriod</a></span>()</code>
<div class="block">
              获取最小时间间隔（以微秒为单位），控制的值可以在换档期间改变。 
            </div> </td>
</tr>
<tr class="altColor" id="i8">
<td class="colFirst"><code>float</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/sound/sampled/FloatControl.html#getValue--">getValue</a></span>()</code>
<div class="block">
              获取此控件的当前值。 
            </div> </td>
</tr>
<tr class="rowColor" id="i9">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/sound/sampled/FloatControl.html#setValue-float-">setValue</a></span>(float newValue)</code>
<div class="block">
              设置控件的当前值。 
            </div> </td>
</tr>
<tr class="altColor" id="i10">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/sound/sampled/FloatControl.html#shift-float-float-int-">shift</a></span>(float from, float to, int microseconds)</code>
<div class="block">
              在指定的时间段内将控制值从初始值线性改变为最终值，以微秒为单位。 
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<tr class="rowColor" id="i11">
<td class="colFirst"><code><a href="../../../java/lang/String.html" title="class in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/sound/sampled/FloatControl.html#toString--">toString</a></span>()</code>
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              提供控件的字符串表示形式 
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<li class="blockList"> <h4>FloatControl</h4> <pre>protected FloatControl(<a href="../../../javax/sound/sampled/FloatControl.Type.html" title="class in javax.sound.sampled">FloatControl.Type</a> type,
                       float minimum,
                       float maximum,
                       float precision,
                       int updatePeriod,
                       float initialValue,
                       <a href="../../../java/lang/String.html" title="class in java.lang">String</a> units,
                       <a href="../../../java/lang/String.html" title="class in java.lang">String</a> minLabel,
                       <a href="../../../java/lang/String.html" title="class in java.lang">String</a> midLabel,
                       <a href="../../../java/lang/String.html" title="class in java.lang">String</a> maxLabel)</pre>
<div class="block">
            使用给定的参数构造一个新的float控件对象 
          </div>
<dl>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>type</code> - 由此浮动控件对象表示的控件种类 
           </dd>
<dd>
<code>minimum</code> - 控制 
            <code>minimum</code>的最小值 
           </dd>
<dd>
<code>maximum</code> - 控制允许的最大值 
           </dd>
<dd>
<span><code>precision</code> - 控件的分辨率或粒度。</span>
<span>这是离散有效值之间的增量的大小。</span>
</dd>
<dd>
<code>updatePeriod</code> - 最短时间间隔（以微秒为单位），在一个 
            <a href="../../../javax/sound/sampled/FloatControl.html#shift-float-float-int-"><code>shift</code></a>期间，控制可以从一个离散值向下一个 
            <a href="../../../javax/sound/sampled/FloatControl.html#shift-float-float-int-">变化</a>
</dd>
<dd>
<code>initialValue</code> - 构建时控件开始的值 
           </dd>
<dd>
<code>units</code> - 表示控制值的单位的标签，例如“dB”或“每秒帧数” 
           </dd>
<dd>
<code>minLabel</code> - 最小值的标签，例如“左”或“关” 
           </dd>
<dd>
<code>midLabel</code> - 中点值的标签，如“中心”或“默认” 
           </dd>
<dd>
<code>maxLabel</code> - 最大值的标签，如“右”或“全” 
           </dd>
<dt>
<span class="throwsLabel">异常</span>
</dt>
<dd>
<code><a href="../../../java/lang/IllegalArgumentException.html" title="class in java.lang">IllegalArgumentException</a></code> - 如果 
            <code>minimum</code>大于 
            <code>maximum</code>或 
            <code>initialValue</code>不在允许范围内 
           </dd>
</dl> </li>
</ul> <a name="FloatControl-javax.sound.sampled.FloatControl.Type-float-float-float-int-float-java.lang.String-">
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<ul class="blockListLast">
<li class="blockList"> <h4>FloatControl</h4> <pre>protected FloatControl(<a href="../../../javax/sound/sampled/FloatControl.Type.html" title="class in javax.sound.sampled">FloatControl.Type</a> type,
                       float minimum,
                       float maximum,
                       float precision,
                       int updatePeriod,
                       float initialValue,
                       <a href="../../../java/lang/String.html" title="class in java.lang">String</a> units)</pre>
<div class="block">
<span>使用给定的参数构造一个新的float控件对象。</span>
<span>最小值，最大值和中点值的标签设置为零长度字符串。</span>
</div>
<dl>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>type</code> - 由此浮动控件对象表示的控件种类 
           </dd>
<dd>
<code>minimum</code> - 控制 
            <code>minimum</code>的最小值 
           </dd>
<dd>
<code>maximum</code> - 控制允许的最大值 
           </dd>
<dd>
<span><code>precision</code> - 控件的分辨率或粒度。</span>
<span>这是离散有效值之间的增量的大小。</span>
</dd>
<dd>
<code>updatePeriod</code> - 最小的时间间隔（以微秒为单位），在一个 
            <a href="../../../javax/sound/sampled/FloatControl.html#shift-float-float-int-"><code>shift</code></a>期间，控制可以从一个离散值改变到下一个离散值 
           </dd>
<dd>
<code>initialValue</code> - 构造时控件开始的值 
           </dd>
<dd>
<code>units</code> - 表示控制值的单位的标签，例如“dB”或“每秒帧数” 
           </dd>
<dt>
<span class="throwsLabel">异常</span>
</dt>
<dd>
<code><a href="../../../java/lang/IllegalArgumentException.html" title="class in java.lang">IllegalArgumentException</a></code> - 如果 
            <code>minimum</code>大于 
            <code>maximum</code>或 
            <code>initialValue</code>不在允许范围内 
           </dd>
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<li class="blockList"> <h4>setValue</h4> <pre>public void setValue(float newValue)</pre>
<div class="block">
<span>设置控件的当前值。</span>
<span>默认实现只是按照指示设置值。</span>
<span>如果指示的值大于最大值或小于最小值，则会抛出IllegalArgumentException异常。</span>
<span>一些控件要求在打开它们的行之前，通过设置值来影响它们的行。</span>
</div>
<dl>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>newValue</code> - 所需的新值 
           </dd>
<dt>
<span class="throwsLabel">异常</span>
</dt>
<dd>
<code><a href="../../../java/lang/IllegalArgumentException.html" title="class in java.lang">IllegalArgumentException</a></code> - 如果指示的值不在容许范围内 
           </dd>
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<li class="blockList"> <h4>getValue</h4> <pre>public float getValue()</pre>
<div class="block">
            获取此控件的当前值。 
          </div>
<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
             当前值 
           </dd>
</dl> </li>
</ul> <a name="getMaximum--">
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<li class="blockList"> <h4>getMaximum</h4> <pre>public float getMaximum()</pre>
<div class="block">
            获得允许的最大值。 
          </div>
<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
             最大允许值 
           </dd>
</dl> </li>
</ul> <a name="getMinimum--">
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<li class="blockList"> <h4>getMinimum</h4> <pre>public float getMinimum()</pre>
<div class="block">
            获得允许的最小值。 
          </div>
<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
             最小允许值 
           </dd>
</dl> </li>
</ul> <a name="getUnits--">
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<li class="blockList"> <h4>getUnits</h4> <pre>public <a href="../../../java/lang/String.html" title="class in java.lang">String</a> getUnits()</pre>
<div class="block">
            获取表示控件值的单位的标签，例如“dB”或“每秒帧数”。 
          </div>
<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
             单位标签，如果没有标签，则为零长度字符串 
           </dd>
</dl> </li>
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<li class="blockList"> <h4>getMinLabel</h4> <pre>public <a href="../../../java/lang/String.html" title="class in java.lang">String</a> getMinLabel()</pre>
<div class="block">
            获取最小值的标签，例如“左”或“关”。 
          </div>
<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
             最小值标签或未设置标签*的零长度字符串 
           </dd>
</dl> </li>
</ul> <a name="getMidLabel--">
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<li class="blockList"> <h4>getMidLabel</h4> <pre>public <a href="../../../java/lang/String.html" title="class in java.lang">String</a> getMidLabel()</pre>
<div class="block">
            获取中点值的标签，例如“中心”或“默认”。 
          </div>
<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
             中点值标签，如果没有设置标签*，则为零长度字符串 
           </dd>
</dl> </li>
</ul> <a name="getMaxLabel--">
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<li class="blockList"> <h4>getMaxLabel</h4> <pre>public <a href="../../../java/lang/String.html" title="class in java.lang">String</a> getMaxLabel()</pre>
<div class="block">
            获取最大值的标签，例如“Right”或“Full”。 
          </div>
<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
             最大值标签或未设置标签*的零长度字符串 
           </dd>
</dl> </li>
</ul> <a name="getPrecision--">
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<li class="blockList"> <h4>getPrecision</h4> <pre>public float getPrecision()</pre>
<div class="block">
<span>以控制措施的单位获得控制的决议或粒度。</span>
<span>精度是此控件的离散有效值之间的增量大小，超出了支持的浮点值集合。</span>
</div>
<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
             控制精度 
           </dd>
</dl> </li>
</ul> <a name="getUpdatePeriod--">
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<ul class="blockList">
<li class="blockList"> <h4>getUpdatePeriod</h4> <pre>public int getUpdatePeriod()</pre>
<div class="block">
<span>获取最小时间间隔（以微秒为单位），控制的值可以在换档期间改变。</span>
<span>更新周期是在换档期间控制更新其值的频率的倒数。</span>
<span>如果实现不支持随时间变化的值，则应将控件的值立即设置为最终值，并从该方法返回-1。</span>
</div>
<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
             更新周期（以微秒为单位），如果不随时间变化，则为-1 
           </dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/sound/sampled/FloatControl.html#shift-float-float-int-"><code>shift(float, float, int)</code></a>
</dd>
</dl> </li>
</ul> <a name="shift-float-float-int-">
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<ul class="blockList">
<li class="blockList"> <h4>shift</h4> <pre>public void shift(float from,
                  float to,
                  int microseconds)</pre>
<div class="block">
<span>在指定的时间段内将控制值从初始值线性改变为最终值，以微秒为单位。</span>
<span>此方法返回而不阻塞;</span>
<span>它不等待转移完成。</span>
<span>一个实现应该在指定的时间内完成操作。</span>
<span>默认实现只是将值立即更改为最终值。</span>
</div>
<dl>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>from</code> - 移位开始时的初始值 
           </dd>
<dd>
<code>to</code> - 转移后的最终值 
           </dd>
<dd>
<code>microseconds</code> - 以微秒为单位的最大持续时间 
           </dd>
<dt>
<span class="throwsLabel">异常</span>
</dt>
<dd>
<code><a href="../../../java/lang/IllegalArgumentException.html" title="class in java.lang">IllegalArgumentException</a></code> - 如果 
            <code>from</code>或 
            <code>to</code>值不在允许范围内 
           </dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/sound/sampled/FloatControl.html#getUpdatePeriod--"><code>getUpdatePeriod()</code></a>
</dd>
</dl> </li>
</ul> <a name="toString--">
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<ul class="blockListLast">
<li class="blockList"> <h4>toString</h4> <pre>public <a href="../../../java/lang/String.html" title="class in java.lang">String</a> toString()</pre>
<div class="block">
            提供控件的字符串表示形式 
          </div>
<dl>
<dt>
<span class="overrideSpecifyLabel">重写：</span>
</dt>
<dd>
<code><a href="../../../javax/sound/sampled/Control.html#toString--">toString</a></code>在类别 
            <code><a href="../../../javax/sound/sampled/Control.html" title="class in javax.sound.sampled">Control</a></code>
</dd>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
             一个字符串描述 
           </dd>
</dl> </li>
</ul> </li>
</ul> </li>
</ul>
</div>
</div>