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Breadcrumbs go here --> <li><a href="qdeclarativeelements.html">QML Elements</a></li> <li>QML Gradient Element</li> </ul> </div> <div class="toolbuttons toolblock"> <ul> <li id="smallA" class="t_button">A</li> <li id="medA" class="t_button active">A</li> <li id="bigA" class="t_button">A</li> <li id="print" class="t_button"><a href="javascript:this.print();"> <span>Print</span></a></li> </ul> </div> </div> <div class="content mainContent"> <div class="toc"> <h3><a name="toc">Contents</a></h3> <ul> <li class="level1"><a href="#properties">Properties</a></li> <li class="level1"><a href="#details">Detailed Description</a></li> <li class="level2"><a href="#example-usage">Example Usage</a></li> <li class="level2"><a href="#performance-and-limitations">Performance and Limitations</a></li> </ul> </div> <h1 class="title">QML Gradient Element</h1> <span class="subtitle"></span> <!-- $$$Gradient-brief --> <p>The Gradient item defines a gradient fill. <a href="#details">More...</a></p> <!-- @@@Gradient --> <p>This element was introduced in Qt 4.7.</p> <ul> <li><a href="qml-gradient-members.html">List of all members, including inherited members</a></li> </ul> <a name="properties"></a> <h2>Properties</h2> <ul> <li class="fn"><b><b><a href="qml-gradient.html#stops-prop">stops</a></b></b> : list<GradientStop></li> </ul> <!-- $$$Gradient-description --> <a name="details"></a> <h2>Detailed Description</h2> <p>A gradient is defined by two or more colors, which will be blended seamlessly.</p> <p>The colors are specified as a set of <a href="qml-gradientstop.html">GradientStop</a> child items, each of which defines a position on the gradient from 0.0 to 1.0 and a color. The position of each <a href="qml-gradientstop.html">GradientStop</a> is defined by setting its <a href="qml-gradientstop.html#position-prop">position</a> property; its color is defined using its <a href="qml-gradientstop.html#color-prop">color</a> property.</p> <p>A gradient without any gradient stops is rendered as a solid white fill.</p> <p>Note that this item is not a visual representation of a gradient. To display a gradient, use a visual element (like <a href="qml-rectangle.html">Rectangle</a>) which supports the use of gradients.</p> <a name="example-usage"></a> <h2>Example Usage</h2> <div class="float-right"><p><img src="images/qml-gradient.png" alt="" /></p> </div><p>The following example declares a <a href="qml-rectangle.html">Rectangle</a> item with a gradient starting with red, blending to yellow at one third of the height of the rectangle, and ending with green:</p> <pre class="qml"> <span class="type"><a href="qml-rectangle.html">Rectangle</a></span> { <span class="name">width</span>: <span class="number">100</span>; <span class="name">height</span>: <span class="number">100</span> <span class="name">gradient</span>: <span class="name">Gradient</span> { <span class="type"><a href="qml-gradientstop.html">GradientStop</a></span> { <span class="name">position</span>: <span class="number">0.0</span>; <span class="name">color</span>: <span class="string">"red"</span> } <span class="type"><a href="qml-gradientstop.html">GradientStop</a></span> { <span class="name">position</span>: <span class="number">0.33</span>; <span class="name">color</span>: <span class="string">"yellow"</span> } <span class="type"><a href="qml-gradientstop.html">GradientStop</a></span> { <span class="name">position</span>: <span class="number">1.0</span>; <span class="name">color</span>: <span class="string">"green"</span> } } }</pre> <br style="clear: both" /><a name="performance-and-limitations"></a> <h2>Performance and Limitations</h2> <p>Calculating gradients can be computationally expensive compared to the use of solid color fills or images. Consider using gradients for static items in a user interface.</p> <p>In Qt 4.7, only vertical, linear gradients can be applied to items. If you need to apply different orientations of gradients, a combination of rotation and clipping will need to be applied to the relevant items. This can introduce additional performance requirements for your application.</p> <p>The use of animations involving gradient stops may not give the desired result. An alternative way to animate gradients is to use pre-generated images or SVG drawings containing gradients.</p> <p><b>See also </b><a href="qml-gradientstop.html">GradientStop</a>.</p> <!-- @@@Gradient --> <h2>Property Documentation</h2> <!-- $$$stops --> <div class="qmlitem"><div class="qmlproto"><table class="qmlname"><tr valign="top" class="odd"><td class="tblQmlPropNode"><p><a name="stops-prop"></a><span class="qmlreadonly">read-only</span><span class="name">stops</span> : <span class="type"><a href="qml-list.html">list</a></span><<span class="type"><a href="qml-gradientstop.html">GradientStop</a></span>></p></td></tr></table></div><div class="qmldoc"><p>This property holds the gradient stops describing the gradient.</p> <p>By default, this property contains an empty list.</p> <p>To set the gradient stops, define them as children of the Gradient element.</p> </div></div><!-- @@@stops --> <br/> </div> </div> </div> <div class="ft"> <span></span> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2015 The Qt Company Ltd. 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