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<div class="refentry" title="FLcount">
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<h2>
<span class="refentrytitle">FLcount</span>
</h2>
<p>FLcount —
A FLTK widget opcode that creates a counter.
</p>
</div>
<div class="refsect1" title="Description">
<a id="idp20707624"></a>
<h2>Description</h2>
<p>
Allows the user to increase/decrease a value with mouse clicks on a corresponding arrow button.
</p>
</div>
<div class="refsect1" title="Syntax">
<a id="idp20708456"></a>
<h2>Syntax</h2>
<pre class="synopsis">kout, ihandle <span class="command"><strong>FLcount</strong></span> "label", imin, imax, istep1, istep2, itype, \
iwidth, iheight, ix, iy, iopcode [, kp1] [, kp2] [, kp3] [...] [, kpN]</pre>
</div>
<div class="refsect1" title="Initialization">
<a id="idp20719216"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>ihandle</em></span> -- a handle value (an integer number) that unequivocally references a corresponding widget. Used by further opcodes that changes some valuator's properties. It is automatically set by the corresponding valuator.
</p>
<p>
<span class="emphasis"><em><span class="quote">“<span class="quote">label</span>”</span></em></span> -- a double-quoted string containing some user-provided text, placed near the corresponding widget.
</p>
<p>
<span class="emphasis"><em>imin</em></span> -- minimum value of output range
</p>
<p>
<span class="emphasis"><em>imax</em></span> -- maximum value of output range
</p>
<p>
<span class="emphasis"><em>istep1</em></span> -- a floating-point number indicating the increment of valuator value corresponding to of each mouse click. <span class="emphasis"><em>istep1</em></span> is for fine adjustments.
</p>
<p>
<span class="emphasis"><em>istep2</em></span> -- a floating-point number indicating the increment of valuator value corresponding to of each mouse click. <span class="emphasis"><em>istep2</em></span> is for coarse adjustments.
</p>
<p>
<span class="emphasis"><em>itype</em></span> -- an integer number denoting the appearance of the valuator.
</p>
<p>
<span class="emphasis"><em>iwidth</em></span> -- width of widget.
</p>
<p>
<span class="emphasis"><em>iheight</em></span> -- height of widget.
</p>
<p>
<span class="emphasis"><em>ix</em></span> -- horizontal position of upper left corner of the valuator, relative to the upper left corner of corresponding window (expressed in pixels).
</p>
<p>
<span class="emphasis"><em>iy</em></span> -- vertical position of upper left corner of the valuator, relative to the upper left corner of corresponding window (expressed in pixels).
</p>
<p>
<span class="emphasis"><em>iopcode</em></span> -- score opcode type. You have to provide the ascii code of the letter corresponding to the score opcode. At present time only <span class="quote">“<span class="quote">i</span>”</span> (ascii code 105) score statements are supported. A zero value refers to a default value of <span class="quote">“<span class="quote">i</span>”</span>. So both 0 and 105 activates the <a class="link" href="i.html" title="i Statement (Instrument or Note Statement)"><em class="citetitle">i</em></a> opcode. A value of -1 disables this opcode feature.
</p>
</div>
<div class="refsect1" title="Performance">
<a id="idp20769320"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>kout</em></span> -- output value
</p>
<p>
<span class="emphasis"><em>kp1</em></span>, <span class="emphasis"><em>kp2</em></span>, ..., <span class="emphasis"><em>kpN</em></span> -- arguments of the activated instruments.
</p>
<p>
<span class="emphasis"><em>FLcount</em></span> allows the user to increase/decrease a value with mouse clicks on corresponding arrow buttons:
</p>
<div class="mediaobject">
<img src="images/flcount.png" alt="FLcount." />
<div class="caption">
<p>FLcount.</p>
</div>
</div>
<p>
</p>
<p>
There are two kind of arrow buttons, for larger and smaller steps. Notice that <span class="emphasis"><em>FLcount</em></span> not only outputs a value and a handle, but can also activate (schedule) an instrument provided by the user each time a button is pressed. P-fields of the activated instrument are <span class="emphasis"><em>kp1</em></span> (instrument number), <span class="emphasis"><em>kp2</em></span> (action time), <span class="emphasis"><em>kp3</em></span> (duration) and so on with user p-fields. If the <span class="emphasis"><em>iopcode</em></span> argument is set to a negative number, no instrument is activated. So this feature is optional.
</p>
</div>
<div class="refsect1" title="Examples">
<a id="idp20775136"></a>
<h2>Examples</h2>
<p>
Here is an example of the FLcount opcode. It uses the file <a class="ulink" href="examples/FLcount.csd" target="_top"><em class="citetitle">FLcount.csd</em></a>.
</p>
<div class="example">
<a id="idp20776120"></a>
<p class="title">
<strong>Example 239. Example of the FLcount opcode.</strong>
</p>
<div class="example-contents">
<p>See the sections <a class="link" href="UsingRealTime.html" title="Real-Time Audio"><em class="citetitle">Real-time Audio</em></a> and <a class="link" href="CommandFlags.html" title="Csound command line"><em class="citetitle">Command Line Flags</em></a> for more information on using command line flags.</p>
<pre class="programlisting">
<span class="csdtag"><CsoundSynthesizer></span>
<span class="csdtag"><CsOptions></span>
<span class="comment">; Select audio/midi flags here according to platform</span>
<span class="comment">; Audio out Audio in No messages</span>
-odac -iadc -d <span class="comment">;;;RT audio I/O</span>
<span class="comment">; For Non-realtime ouput leave only the line below:</span>
<span class="comment">; -o FLcount.wav -W ;;; for file output any platform</span>
<span class="csdtag"></CsOptions></span>
<span class="csdtag"><CsInstruments></span>
<span class="comment">; Demonstration of the flcount opcode</span>
<span class="comment">; clicking on the single arrow buttons</span>
<span class="comment">; increments the oscillator in semitone steps</span>
<span class="comment">; clicking on the double arrow buttons </span>
<span class="comment">; increments the oscillator in octave steps</span>
<span class="ohdr">sr</span> <span class="op">=</span> 44100
<span class="ohdr">kr</span> <span class="op">=</span> 441
<span class="ohdr">ksmps</span> <span class="op">=</span> 100
<span class="ohdr">nchnls</span> <span class="op">=</span> 1
<span class="opc">FLpanel</span> "Counter", 900, 400, 50, 50
<span class="comment">; Minimum value output by counter</span>
imin <span class="op">=</span> 6
<span class="comment">; Maximum value output by counter</span>
imax <span class="op">=</span> 12
<span class="comment">; Single arrow step size (semitones)</span>
istep1 <span class="op">=</span> 1<span class="op">/</span>12
<span class="comment">; Double arrow step size (octave)</span>
istep2 <span class="op">=</span> 1
<span class="comment">; Counter type (1=double arrow counter)</span>
itype <span class="op">=</span> 1
<span class="comment">; Width of the counter in pixels</span>
iwidth <span class="op">=</span> 200
<span class="comment">; Height of the counter in pixels</span>
iheight <span class="op">=</span> 30
<span class="comment">; Distance of the left edge of the counter</span>
<span class="comment">; from the left edge of the panel</span>
ix <span class="op">=</span> 50
<span class="comment">; Distance of the top edge of the counter</span>
<span class="comment">; from the top edge of the panel</span>
iy <span class="op">=</span> 50
<span class="comment">; Score event type (-1=ignored)</span>
iopcode <span class="op">=</span> <span class="op">-</span>1
gkoct, ihandle <span class="opc">FLcount</span> "pitch <span class="opc">in</span> oct format", imin, imax, istep1, istep2, itype, iwidth, iheight, ix, iy, iopcode, 1, 0, 1
<span class="comment">; End of panel contents</span>
<span class="opc">FLpanelEnd</span>
<span class="comment">; Run the widget thread!</span>
<span class="opc">FLrun</span>
<span class="oblock">instr</span> 1
iamp <span class="op">=</span> 15000
ifn <span class="op">=</span> 1
asig <span class="opc">oscili</span> iamp, <span class="opc">cpsoct</span>(gkoct), ifn
<span class="opc">out</span> asig
<span class="oblock">endin</span>
<span class="csdtag"></CsInstruments></span>
<span class="csdtag"><CsScore></span>
<span class="comment">; Function table that defines a single cycle</span>
<span class="comment">; of a sine wave.</span>
<span class="stamnt">f</span> 1 0 1024 10 1
<span class="comment">; Instrument 1 will play a note for 1 hour.</span>
<span class="stamnt">i</span> 1 0 3600
<span class="stamnt">e</span>
<span class="csdtag"></CsScore></span>
<span class="csdtag"></CsoundSynthesizer></span>
</pre>
</div>
</div>
<p><br class="example-break" />
</p>
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<div class="refsect1" title="See Also">
<a id="idp20778416"></a>
<h2>See Also</h2>
<p>
<a class="link" href="FLjoy.html" title="FLjoy"><em class="citetitle">FLjoy</em></a>,
<a class="link" href="FLknob.html" title="FLknob"><em class="citetitle">FLknob</em></a>,
<a class="link" href="FLroller.html" title="FLroller"><em class="citetitle">FLroller</em></a>,
<a class="link" href="FLslider.html" title="FLslider"><em class="citetitle">FLslider</em></a>,
<a class="link" href="FLtext.html" title="FLtext"><em class="citetitle">FLtext</em></a>
</p>
</div>
<div class="refsect1" title="Credits">
<a id="idp20781416"></a>
<h2>Credits</h2>
<p>Author: Gabriel Maldonado</p>
<p>New in version 4.22</p>
<p>Example written by Iain McCurdy, edited by Kevin Conder.</p>
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