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<a href="#pub-methods">Public Member Functions</a> </div>
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<div class="title">Wt::WColor Class Reference<div class="ingroups"><a class="el" href="group__style.html">Style classes</a> | <a class="el" href="group__painting.html">Painting system</a></div></div> </div>
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<!-- doxytag: class="Wt::WColor" -->
<p>A value class that defines a color.
<a href="classWt_1_1WColor.html#details">More...</a></p>
<p><code>#include <Wt/WColor></code></p>
<p><a href="classWt_1_1WColor-members.html">List of all members.</a></p>
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WColor.html#a0aca175990842e4be3d944236e27cda3">WColor</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Creates a default color. <a href="#a0aca175990842e4be3d944236e27cda3"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WColor.html#a5e0102afbdf3ece70a200c1379ad3522">WColor</a> (int red, int green, int blue, int alpha=255)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Creates a color with given red/green/blue/alpha components. <a href="#a5e0102afbdf3ece70a200c1379ad3522"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WColor.html#a00336e4511fb1fd68f3c66d58c30a4c1">WColor</a> (const <a class="el" href="classWt_1_1WString.html">WString</a> &name)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Creates a color from a CSS name. <a href="#a00336e4511fb1fd68f3c66d58c30a4c1"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WColor.html#a12eeb92c9177d1033e2dbd72e799ddcc">WColor</a> (<a class="el" href="group__style.html#ga9686ea88ce4db2c0a12ea84452f60133">GlobalColor</a> name)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Creates a predefined color. <a href="#a12eeb92c9177d1033e2dbd72e799ddcc"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WColor.html#ab3e459365133f983d702a310dd600772">setRgb</a> (int red, int green, int blue, int alpha=255)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Sets the red/green/blue/alpha components. <a href="#ab3e459365133f983d702a310dd600772"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WColor.html#aea520f8d33c730809176bd555463e33a">setName</a> (const <a class="el" href="classWt_1_1WString.html">WString</a> &name)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Sets the CSS name. <a href="#aea520f8d33c730809176bd555463e33a"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WColor.html#a1aa64740fc2dcfd7b30dfddfe2de8000">isDefault</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns if the color is the default color. <a href="#a1aa64740fc2dcfd7b30dfddfe2de8000"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WColor.html#a1f176a8557b9ebe2a9260b49acae3c3e">red</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the red component. <a href="#a1f176a8557b9ebe2a9260b49acae3c3e"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WColor.html#ac4fa50432b68fd0f1134e80cda0754c5">green</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the green component. <a href="#ac4fa50432b68fd0f1134e80cda0754c5"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WColor.html#a1126ef11c5211e2b0ec29020ea930f36">blue</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the blue component. <a href="#a1126ef11c5211e2b0ec29020ea930f36"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WColor.html#a7fe483df7025fbb2bcb13764bffd9fd1">alpha</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the alpha component. <a href="#a7fe483df7025fbb2bcb13764bffd9fd1"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const <a class="el" href="classWt_1_1WString.html">WString</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WColor.html#a4812291da745a35b8e505848c27bedcd">name</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the CSS name. <a href="#a4812291da745a35b8e505848c27bedcd"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WColor.html#ad26120c40c96c29c58a22cae5a92d0a5">operator==</a> (const <a class="el" href="classWt_1_1WColor.html">WColor</a> &other) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Comparison operator. <a href="#ad26120c40c96c29c58a22cae5a92d0a5"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WColor.html#a9e457a4ece07294a1eb16fc6dbc22d95">operator!=</a> (const <a class="el" href="classWt_1_1WColor.html">WColor</a> &other) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Comparison operator. <a href="#a9e457a4ece07294a1eb16fc6dbc22d95"></a><br/></td></tr>
</table>
<hr/><a name="details" id="details"></a><h2>Detailed Description</h2>
<div class="textblock"><p>A value class that defines a color. </p>
<p>A color corresponds to a CSS color. You can specify a color either using its red/green/blue components, or from a valid CSS name.</p>
<p>The color supports an alpha channel, which determines the degree of transparency. An alpha value of 0 is completely transparent (and thus invisible), while a value of 255 is completely opaque. </p>
</div><hr/><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" id="a0aca175990842e4be3d944236e27cda3"></a><!-- doxytag: member="Wt::WColor::WColor" ref="a0aca175990842e4be3d944236e27cda3" args="()" -->
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<td class="memname">Wt::WColor::WColor </td>
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<p>Creates a default color. </p>
<p>The default color is depending on the context, another color (for example from a hierarchical parent in a widget tree), or a completely transparent color. </p>
</div>
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<a class="anchor" id="a5e0102afbdf3ece70a200c1379ad3522"></a><!-- doxytag: member="Wt::WColor::WColor" ref="a5e0102afbdf3ece70a200c1379ad3522" args="(int red, int green, int blue, int alpha=255)" -->
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<td class="paramtype">int </td>
<td class="paramname"><em>red</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>green</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>blue</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">int </td>
<td class="paramname"><em>alpha</em> = <code>255</code> </td>
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<p>Creates a color with given red/green/blue/alpha components. </p>
<p>All four components must be specified with a value in the range (0 - 255). The alpha channel determines the degree of transparency. An alpha value of 0 is completely transparent (and thus invisible), while a value of 255 is completely opaque.</p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WColor.html#ab3e459365133f983d702a310dd600772" title="Sets the red/green/blue/alpha components.">setRgb(int, int, int, int)</a> </dd></dl>
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<a class="anchor" id="a00336e4511fb1fd68f3c66d58c30a4c1"></a><!-- doxytag: member="Wt::WColor::WColor" ref="a00336e4511fb1fd68f3c66d58c30a4c1" args="(const WString &name)" -->
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<td class="paramtype">const <a class="el" href="classWt_1_1WString.html">WString</a> & </td>
<td class="paramname"><em>name</em></td><td>)</td>
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<p>Creates a color from a CSS name. </p>
<p>The <code>name</code> may be any valid CSS color name, including names colors such as "aqua", or colors defined as RGB components.</p>
<p>Only if the color is defined in terms of RGB components (using the rgba() format), will the CSS color be parsed into red, blue and green values. to an appropriate value. Otherwise, these values are not available, and the color can only be used in media that support CSS colors.</p>
<p>See also <a href="http://www.w3.org/TR/css3-color">http://www.w3.org/TR/css3-color</a> </p>
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<a class="anchor" id="a12eeb92c9177d1033e2dbd72e799ddcc"></a><!-- doxytag: member="Wt::WColor::WColor" ref="a12eeb92c9177d1033e2dbd72e799ddcc" args="(GlobalColor name)" -->
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<td class="memname">Wt::WColor::WColor </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__style.html#ga9686ea88ce4db2c0a12ea84452f60133">Wt::GlobalColor</a> </td>
<td class="paramname"><em>name</em></td><td>)</td>
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<p>Creates a predefined color. </p>
<p>Constructs one of the 16 predefined Wt colors constants. </p>
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<hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="a7fe483df7025fbb2bcb13764bffd9fd1"></a><!-- doxytag: member="Wt::WColor::alpha" ref="a7fe483df7025fbb2bcb13764bffd9fd1" args="() const " -->
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<td class="memname">int Wt::WColor::alpha </td>
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<td> const</td>
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<p>Returns the alpha component. </p>
<p>Only available when the color was specified in terms of the RGB components using <a class="el" href="classWt_1_1WColor.html#ab3e459365133f983d702a310dd600772" title="Sets the red/green/blue/alpha components.">setRgb(int, int, int, int)</a> or <a class="el" href="classWt_1_1WColor.html" title="A value class that defines a color.">WColor</a>(int, int, int, int). </p>
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<a class="anchor" id="a1126ef11c5211e2b0ec29020ea930f36"></a><!-- doxytag: member="Wt::WColor::blue" ref="a1126ef11c5211e2b0ec29020ea930f36" args="() const " -->
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<p>Returns the blue component. </p>
<p>Only available when the color was specified in terms of the RGB components using <a class="el" href="classWt_1_1WColor.html#ab3e459365133f983d702a310dd600772" title="Sets the red/green/blue/alpha components.">setRgb(int, int, int, int)</a>, <a class="el" href="classWt_1_1WColor.html" title="A value class that defines a color.">WColor</a>(int, int, int, int) or <a class="el" href="classWt_1_1WColor.html#a00336e4511fb1fd68f3c66d58c30a4c1" title="Creates a color from a CSS name.">WColor(const WString& name)</a> when the name was parsable.</p>
<p>If not available this method return 0. </p>
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<a class="anchor" id="ac4fa50432b68fd0f1134e80cda0754c5"></a><!-- doxytag: member="Wt::WColor::green" ref="ac4fa50432b68fd0f1134e80cda0754c5" args="() const " -->
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<td class="memname">int Wt::WColor::green </td>
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<p>Returns the green component. </p>
<p>Only available when the color was specified in terms of the RGB components using <a class="el" href="classWt_1_1WColor.html#ab3e459365133f983d702a310dd600772" title="Sets the red/green/blue/alpha components.">setRgb(int, int, int, int)</a>, <a class="el" href="classWt_1_1WColor.html" title="A value class that defines a color.">WColor</a>(int, int, int, int) or <a class="el" href="classWt_1_1WColor.html#a00336e4511fb1fd68f3c66d58c30a4c1" title="Creates a color from a CSS name.">WColor(const WString& name)</a> when the name was parsable.</p>
<p>If not available this method return 0. </p>
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<a class="anchor" id="a1aa64740fc2dcfd7b30dfddfe2de8000"></a><!-- doxytag: member="Wt::WColor::isDefault" ref="a1aa64740fc2dcfd7b30dfddfe2de8000" args="() const " -->
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<td> const</td>
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<p>Returns if the color is the default color. </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WColor.html#a0aca175990842e4be3d944236e27cda3" title="Creates a default color.">WColor()</a> </dd></dl>
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<a class="anchor" id="a4812291da745a35b8e505848c27bedcd"></a><!-- doxytag: member="Wt::WColor::name" ref="a4812291da745a35b8e505848c27bedcd" args="() const " -->
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<td class="memname">const <a class="el" href="classWt_1_1WString.html">WString</a>& Wt::WColor::name </td>
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<td class="paramname"></td><td>)</td>
<td> const</td>
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<p>Returns the CSS name. </p>
<p>Only available when it was set with <a class="el" href="classWt_1_1WColor.html#aea520f8d33c730809176bd555463e33a" title="Sets the CSS name.">setName(const WString&)</a> or <a class="el" href="classWt_1_1WColor.html#a00336e4511fb1fd68f3c66d58c30a4c1" title="Creates a color from a CSS name.">WColor(const WString& name)</a>. </p>
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<a class="anchor" id="a9e457a4ece07294a1eb16fc6dbc22d95"></a><!-- doxytag: member="Wt::WColor::operator!=" ref="a9e457a4ece07294a1eb16fc6dbc22d95" args="(const WColor &other) const " -->
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<td class="memname">bool Wt::WColor::operator!= </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classWt_1_1WColor.html">WColor</a> & </td>
<td class="paramname"><em>other</em></td><td>)</td>
<td> const</td>
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<p>Comparison operator. </p>
<p>Returns false if the two colors were not defined in exactly the same way. It may return return although they actually represent the same color. </p>
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<a class="anchor" id="ad26120c40c96c29c58a22cae5a92d0a5"></a><!-- doxytag: member="Wt::WColor::operator==" ref="ad26120c40c96c29c58a22cae5a92d0a5" args="(const WColor &other) const " -->
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<td class="memname">bool Wt::WColor::operator== </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classWt_1_1WColor.html">WColor</a> & </td>
<td class="paramname"><em>other</em></td><td>)</td>
<td> const</td>
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<p>Comparison operator. </p>
<p>Returns <code>true</code> if the two colors were defined in exactly the same way. It may return <code>false</code> although they actually represent the same color. </p>
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<a class="anchor" id="a1f176a8557b9ebe2a9260b49acae3c3e"></a><!-- doxytag: member="Wt::WColor::red" ref="a1f176a8557b9ebe2a9260b49acae3c3e" args="() const " -->
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<td class="memname">int Wt::WColor::red </td>
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<p>Returns the red component. </p>
<p>Only available when the color was specified in terms of the RGB components using <a class="el" href="classWt_1_1WColor.html#ab3e459365133f983d702a310dd600772" title="Sets the red/green/blue/alpha components.">setRgb(int, int, int, int)</a>, <a class="el" href="classWt_1_1WColor.html" title="A value class that defines a color.">WColor</a>(int, int, int, int) or <a class="el" href="classWt_1_1WColor.html#a00336e4511fb1fd68f3c66d58c30a4c1" title="Creates a color from a CSS name.">WColor(const WString& name)</a> when the name was parsable .</p>
<p>If not available this method return 0. </p>
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<a class="anchor" id="aea520f8d33c730809176bd555463e33a"></a><!-- doxytag: member="Wt::WColor::setName" ref="aea520f8d33c730809176bd555463e33a" args="(const WString &name)" -->
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<td class="memname">void Wt::WColor::setName </td>
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<td class="paramtype">const <a class="el" href="classWt_1_1WString.html">WString</a> & </td>
<td class="paramname"><em>name</em></td><td>)</td>
<td></td>
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<p>Sets the CSS name. </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WColor.html#a00336e4511fb1fd68f3c66d58c30a4c1" title="Creates a color from a CSS name.">WColor(const WString&)</a> </dd></dl>
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<a class="anchor" id="ab3e459365133f983d702a310dd600772"></a><!-- doxytag: member="Wt::WColor::setRgb" ref="ab3e459365133f983d702a310dd600772" args="(int red, int green, int blue, int alpha=255)" -->
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<td class="memname">void Wt::WColor::setRgb </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"><em>red</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>green</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>blue</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>alpha</em> = <code>255</code> </td>
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<td></td>
<td>)</td>
<td></td><td></td>
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<p>Sets the red/green/blue/alpha components. </p>
<p>All four components must be specified with a value in the range (0 - 255). The alpha channel determines the degree of transparency. An alpha value of 0 is completely transparent (and thus invisible), while a value of 255 is completely opaque. </p>
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