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<h1>GFC::Gtk::Curve Class Reference</h1>A GtkCurve C++ wrapper class.
<a href="#_details">More...</a>
<p>
<code>#include <<a class="el" href="curve_8hh-source.html">gfc/gtk/curve.hh</a>></code>
<p>
<p>Inheritance diagram for GFC::Gtk::Curve:
<p><center><img src="classGFC_1_1Gtk_1_1Curve.png" usemap="#GFC::Gtk::Curve_map" border="0" alt=""></center>
<map name="GFC::Gtk::Curve_map">
<area href="classGFC_1_1Gtk_1_1DrawingArea.html" alt="GFC::Gtk::DrawingArea" shape="rect" coords="76,280,219,304">
<area href="classGFC_1_1Gtk_1_1Widget.html" alt="GFC::Gtk::Widget" shape="rect" coords="76,224,219,248">
<area href="classGFC_1_1Gtk_1_1Object.html" alt="GFC::Gtk::Object" shape="rect" coords="0,168,143,192">
<area href="classGFC_1_1Atk_1_1Implementor.html" alt="GFC::Atk::Implementor" shape="rect" coords="153,168,296,192">
<area doxygen="gfccore.tag:" href="classGFC_1_1G_1_1Object.html" alt="GFC::G::Object" shape="rect" coords="0,112,143,136">
<area doxygen="gfccore.tag:" href="classGFC_1_1G_1_1TypeInterface.html" alt="GFC::G::TypeInterface" shape="rect" coords="153,112,296,136">
<area doxygen="gfccore.tag:" href="classGFC_1_1G_1_1TypeInstance.html" alt="GFC::G::TypeInstance" shape="rect" coords="0,56,143,80">
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</map>
<a href="classGFC_1_1Gtk_1_1Curve-members.html">List of all members.</a><h2>Signal Prototypes</h2>
<ul>
<li>const <a class="elRef" doxygen="gfccore.tag:" href="classGFC_1_1G_1_1Signal.html">CurveTypeChangedSignalType</a> <a class="el" href="classGFC_1_1Gtk_1_1Curve.html#z466_2">curve_type_changed_signal</a>
<dl class="el"><dd class="mdescRight"><a class="el" href="classGFC_1_1Gtk_1_1Curve.html">Curve</a> type changed signal (see <a class="el" href="classGFC_1_1Gtk_1_1Curve.html#z470_0">sig_curve_type_changed()</a>). <a href="#z466_2"></a><br></dl></ul>
<h2>Public Member Functions</h2>
<tr><td colspan="2"><div class="groupHeader">Constructors</div></td></tr>
<ul>
<li><a class="anchor" name="z467_0" doxytag="GFC::Gtk::Curve::Curve" ></a>
<a class="el" href="classGFC_1_1Gtk_1_1Curve.html#z467_0">Curve</a> ()
<dl class="el"><dd class="mdescRight">Construct a new <a class="el" href="classGFC_1_1Gtk_1_1Curve.html">Curve</a>. <br></dl><li><a class="anchor" name="z467_1" doxytag="GFC::Gtk::Curve::~Curve" ></a>
virtual <a class="el" href="classGFC_1_1Gtk_1_1Curve.html#z467_1">~Curve</a> ()
<dl class="el"><dd class="mdescRight">Destructor. <br></dl></ul>
<tr><td colspan="2"><div class="groupHeader">Accessors</div></td></tr>
<ul>
<li><a class="anchor" name="z468_0" doxytag="GFC::Gtk::Curve::gtk_curve" ></a>
GtkCurve * <a class="el" href="classGFC_1_1Gtk_1_1Curve.html#z468_0">gtk_curve</a> () const
<dl class="el"><dd class="mdescRight">Get a pointer to the GtkCurve structure. <br></dl><li><a class="anchor" name="z468_1" doxytag="GFC::Gtk::Curve::operator GtkCurve *" ></a>
<a class="el" href="classGFC_1_1Gtk_1_1Curve.html#z468_1">operator GtkCurve *</a> () const
<dl class="el"><dd class="mdescRight">Conversion operator; safely converts a <a class="el" href="classGFC_1_1Gtk_1_1Curve.html">Curve</a> to a GtkCurve pointer. <br></dl><li>void <a class="el" href="classGFC_1_1Gtk_1_1Curve.html#z468_2">get_vector</a> (int count, float data[]) const
<dl class="el"><dd class="mdescRight">Returns a vector of points representing the curve. <a href="#z468_2"></a><br></dl></ul>
<tr><td colspan="2"><div class="groupHeader">Methods</div></td></tr>
<ul>
<li><a class="anchor" name="z469_0" doxytag="GFC::Gtk::Curve::reset" ></a>
void <a class="el" href="classGFC_1_1Gtk_1_1Curve.html#z469_0">reset</a> ()
<dl class="el"><dd class="mdescRight">Resets the curve to a straight line from the minimum x and y values to the maximum x and y values (from the bottom-left to the top-right corners); the curve type is not changed. <br></dl><li>void <a class="el" href="classGFC_1_1Gtk_1_1Curve.html#z469_1">set_gamma</a> (float gamma)
<dl class="el"><dd class="mdescRight">Recomputes the entire curve using the given gamma value. <a href="#z469_1"></a><br></dl><li>void <a class="el" href="classGFC_1_1Gtk_1_1Curve.html#z469_2">set_range</a> (float min_x, float max_x, float min_y, float max_y)
<dl class="el"><dd class="mdescRight">Sets the minimum and maximum x and y values of the curve. <a href="#z469_2"></a><br></dl><li>void <a class="el" href="classGFC_1_1Gtk_1_1Curve.html#z469_3">set_vector</a> (int count, float data[])
<dl class="el"><dd class="mdescRight">Sets the vector of points on the curve; the curve type is set to CURVE_TYPE_FREE. <a href="#z469_3"></a><br></dl><li>void <a class="el" href="classGFC_1_1Gtk_1_1Curve.html#z469_4">set_curve_type</a> (<a class="el" href="namespaceGFC_1_1Gtk.html#a312">CurveType</a> <a class="elRef" doxygen="gfccore.tag:" href="classGFC_1_1G_1_1TypeInstance.html#z121_2">type</a>)
<dl class="el"><dd class="mdescRight">Sets the type of the curve. <a href="#z469_4"></a><br></dl></ul>
<tr><td colspan="2"><div class="groupHeader">Signal Proxies</div></td></tr>
<ul>
<li><a class="anchor" name="z470_0" doxytag="GFC::Gtk::Curve::sig_curve_type_changed" ></a>
const <a class="elRef" doxygen="gfccore.tag:" href="classGFC_1_1G_1_1SignalProxy.html">CurveTypeChangedSignalProxy</a> <a class="el" href="classGFC_1_1Gtk_1_1Curve.html#z470_0">sig_curve_type_changed</a> ()
<dl class="el"><dd class="mdescRight">Connect to the curve_type_changed_signal; emitted when the curve type changes. <br></dl></ul>
<h2>Protected Member Functions</h2>
<tr><td colspan="2"><div class="groupHeader">Constructors</div></td></tr>
<ul>
<li><a class="el" href="classGFC_1_1Gtk_1_1Curve.html#z465_0">Curve</a> (GtkCurve *curve, bool <a class="elRef" doxygen="gfccore.tag:" href="classGFC_1_1Trackable.html#z143_1">owns_reference</a>=false)
<dl class="el"><dd class="mdescRight">Construct a new <a class="el" href="classGFC_1_1Gtk_1_1Curve.html">Curve</a> from an existing GtkCurve. <a href="#z465_0"></a><br></dl></ul>
<hr><a name="_details"></a><h2>Detailed Description</h2>
A GtkCurve C++ wrapper class.
<p>
<a class="el" href="classGFC_1_1Gtk_1_1Curve.html">Curve</a> is a widget that allows the user to edit a curve covering a range of values. It is typically used to fine-tune color balances in graphics applications like the Gimp. <a class="el" href="classGFC_1_1Gtk_1_1Curve.html">Curve</a> has 3 modes of operation - spline, linear and free. In spline mode the user places points on the curve which are automatically connected together into a smooth curve. In linear mode the user places points on the curve which are connected by straight lines. In free mode the user can draw the points of the curve freely, and they are not connected at all.<p>
NOTE this widget is considered too specialized/little-used for GTK+, and will in the future be moved to some other package. If your application needs this widget, feel free to use it, as the widget does work and is useful in some applications; it's just not of general interest.
<p>
<hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="z465_0" doxytag="GFC::Gtk::Curve::Curve" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> GFC::Gtk::Curve::Curve </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">GtkCurve * </td>
<td class="mdname" nowrap> <em>curve</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>bool </td>
<td class="mdname" nowrap> <em>owns_reference</em> = <code>false</code></td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"><code> [explicit, protected]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Construct a new <a class="el" href="classGFC_1_1Gtk_1_1Curve.html">Curve</a> from an existing GtkCurve.
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign=top><em>curve</em> </td><td>A pointer to a GtkCurve. </td></tr>
<tr><td></td><td valign=top><em>owns_reference</em> </td><td>Set false if the initial reference count is floating, set true if it's not.</td></tr>
</table>
</dl>
<br>
The <em>curve</em> can be a newly created GtkCurve or an existing GtkCurve. (see <a class="elRef" doxygen="gfccore.tag:" href="classGFC_1_1G_1_1Object.html#z68_0">G::Object::Object</a>). </td>
</tr>
</table>
<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="z468_2" doxytag="GFC::Gtk::Curve::get_vector" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> void GFC::Gtk::Curve::get_vector </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">int </td>
<td class="mdname" nowrap> <em>count</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>float </td>
<td class="mdname" nowrap> <em>data</em>[]</td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"> const</td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Returns a vector of points representing the curve.
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign=top><em>count</em> </td><td>The number of points to calculate. </td></tr>
<tr><td></td><td valign=top><em>data</em> </td><td>The points. </td></tr>
</table>
</dl>
</td>
</tr>
</table>
<a class="anchor" name="z469_4" doxytag="GFC::Gtk::Curve::set_curve_type" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> void GFC::Gtk::Curve::set_curve_type </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="namespaceGFC_1_1Gtk.html#a312">CurveType</a> </td>
<td class="mdname1" valign="top" nowrap> <em>type</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Sets the type of the curve.
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign=top><em>type</em> </td><td>The type of the curve.</td></tr>
</table>
</dl>
<br>
The curve will remain unchanged except when changing from a free curve to a linear or spline curve, in which case the curve will be changed as little as possible. </td>
</tr>
</table>
<a class="anchor" name="z469_1" doxytag="GFC::Gtk::Curve::set_gamma" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> void GFC::Gtk::Curve::set_gamma </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">float </td>
<td class="mdname1" valign="top" nowrap> <em>gamma</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Recomputes the entire curve using the given gamma value.
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign=top><em>gamma</em> </td><td>The gamma value.</td></tr>
</table>
</dl>
<br>
A gamma value of 1 results in a straight line. Values greater than 1 result in a curve above the straight line. Values less than 1 result in a curve below the straight line. The curve type is changed to CURVE_TYPE_FREE. </td>
</tr>
</table>
<a class="anchor" name="z469_2" doxytag="GFC::Gtk::Curve::set_range" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> void GFC::Gtk::Curve::set_range </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">float </td>
<td class="mdname" nowrap> <em>min_x</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>float </td>
<td class="mdname" nowrap> <em>max_x</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>float </td>
<td class="mdname" nowrap> <em>min_y</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>float </td>
<td class="mdname" nowrap> <em>max_y</em></td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Sets the minimum and maximum x and y values of the curve.
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign=top><em>min_x</em> </td><td>The minimum x value. </td></tr>
<tr><td></td><td valign=top><em>max_x</em> </td><td>The maximum x value. </td></tr>
<tr><td></td><td valign=top><em>min_y</em> </td><td>The minimum y value. </td></tr>
<tr><td></td><td valign=top><em>max_y</em> </td><td>The maximum y value.</td></tr>
</table>
</dl>
<br>
The curve is also reset with a call to <a class="el" href="classGFC_1_1Gtk_1_1Curve.html#z469_0">reset()</a>. </td>
</tr>
</table>
<a class="anchor" name="z469_3" doxytag="GFC::Gtk::Curve::set_vector" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> void GFC::Gtk::Curve::set_vector </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">int </td>
<td class="mdname" nowrap> <em>count</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>float </td>
<td class="mdname" nowrap> <em>data</em>[]</td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Sets the vector of points on the curve; the curve type is set to CURVE_TYPE_FREE.
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign=top><em>count</em> </td><td>The number of points. </td></tr>
<tr><td></td><td valign=top><em>data</em> </td><td>The points on the curve. </td></tr>
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<hr><h2>Member Data Documentation</h2>
<a class="anchor" name="z466_2" doxytag="GFC::Gtk::Curve::curve_type_changed_signal" ></a><p>
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<td class="md" nowrap valign="top"> const <a class="elRef" doxygen="gfccore.tag:" href="classGFC_1_1G_1_1Signal.html">CurveTypeChangedSignalType</a> <a class="el" href="classGFC_1_1Gtk_1_1Curve.html#z466_2">GFC::Gtk::Curve::curve_type_changed_signal</a><code> [static, protected]</code> </td>
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<p>
<a class="el" href="classGFC_1_1Gtk_1_1Curve.html">Curve</a> type changed signal (see <a class="el" href="classGFC_1_1Gtk_1_1Curve.html#z470_0">sig_curve_type_changed()</a>).
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Calls a slot with the signature: <div class="fragment"><pre> <span class="keywordtype">void</span> function();
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<hr>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="curve_8hh-source.html">curve.hh</a></ul>
<hr size="1"><address style="align: right;"><small>Generated on Tue Aug 24 00:34:38 2004 for GFC-UI by
<a href="http://www.doxygen.org/index.html">
<img src="doxygen.png" alt="doxygen" align="middle" border=0 ></a> 1.3.8 </small></address>
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