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<td >Qt 5.9</td><td ><a href="qtquick-index.html">Qt Quick</a></td><td ><a href="qtquick-qmlmodule.html">QML Types</a></td><td >Obsolete Members for Canvas</td></tr></table><table class="buildversion"><tr>
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<h1 class="title">Obsolete Members for Canvas</h1>
<p><b>The following members of QML type <a href="qml-qtquick-canvas.html">Canvas</a> are obsolete.</b> They are provided to keep old source code working. We strongly advise against using them in new code.</p>
<a name="properties"></a>
<h2 id="properties">Properties</h2>
<ul>
<li class="fn"><b><b><a href="qml-qtquick-canvas-obsolete.html#canvasWindow-prop">canvasWindow</a></b></b> : rect<code> (obsolete)</code></li>
<li class="fn"><b><b><a href="qml-qtquick-canvas-obsolete.html#tileSize-prop">tileSize</a></b></b> : size<code> (obsolete)</code></li>
</ul>
<h2>Property Documentation</h2>
<!-- $$$canvasWindow -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="canvasWindow-prop">
<td class="tblQmlPropNode"><p>
<a name="canvasWindow-prop"></a><span class="name">canvasWindow</span> : <span class="type">rect</span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>Holds the current canvas visible window.</p>
<p>By default the canvasWindow size is the same as the Canvas item size with the top-left point as (0, 0).</p>
<p>If the <a href="qml-qtquick-canvas.html#canvasSize-prop">canvasSize</a> is different to the Canvas item size, the Canvas item can display different visible areas by changing the canvas windowSize and/or position.</p>
<p><b>See also </b><a href="qml-qtquick-canvas.html#canvasSize-prop">canvasSize</a> and <a href="qml-qtquick-canvas-obsolete.html#tileSize-prop">tileSize</a>.</p>
</div></div><!-- @@@canvasWindow -->
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<!-- $$$tileSize -->
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<tr valign="top" class="odd" id="tileSize-prop">
<td class="tblQmlPropNode"><p>
<a name="tileSize-prop"></a><span class="name">tileSize</span> : <span class="type">size</span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>Holds the canvas rendering tile size.</p>
<p>The Canvas item enters tiled mode by setting <a href="qml-qtquick-canvas.html#canvasSize-prop">canvasSize</a>, tileSize and the <a href="qml-qtquick-canvas-obsolete.html#canvasWindow-prop">canvasWindow</a>. This can improve rendering performance by rendering and caching tiles instead of rendering the whole canvas every time.</p>
<p>Memory will be consumed only by those tiles within the current visible region.</p>
<p>By default the tileSize is the same as the <a href="qml-qtquick-canvas.html#canvasSize-prop">canvasSize</a>.</p>
<p><b>See also </b><a href="qml-qtquick-canvas.html#canvasSize-prop">canvasSize</a> and <a href="qml-qtquick-canvas-obsolete.html#canvasWindow-prop">canvasWindow</a>.</p>
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