<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <!-- qquickcanvasitem.cpp --> <title>Obsolete Members for Canvas | Qt Quick 5.9</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <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> <td id="buildversion" width="100%" align="right">Qt 5.9.4 Reference Documentation</td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"><div class="sidebar-content" id="sidebar-content"></div></div> <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> <!-- $$$canvasWindow --> <div class="qmlitem"><div class="qmlproto"> <div class="table"><table class="qmlname"> <tr valign="top" class="odd" id="canvasWindow-prop"> <td class="tblQmlPropNode"><p> <a name="canvasWindow-prop"></a><span class="name">canvasWindow</span> : <span class="type">rect</span></p></td></tr> </table></div> </div><div class="qmldoc"><p>Holds the current canvas visible window.</p> <p>By default the canvasWindow size is the same as the Canvas item size with the top-left point as (0, 0).</p> <p>If the <a href="qml-qtquick-canvas.html#canvasSize-prop">canvasSize</a> is different to the Canvas item size, the Canvas item can display different visible areas by changing the canvas windowSize and/or position.</p> <p><b>See also </b><a href="qml-qtquick-canvas.html#canvasSize-prop">canvasSize</a> and <a href="qml-qtquick-canvas-obsolete.html#tileSize-prop">tileSize</a>.</p> </div></div><!-- @@@canvasWindow --> <br/> <!-- $$$tileSize --> <div class="qmlitem"><div class="qmlproto"> <div class="table"><table class="qmlname"> <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> </div></div><!-- @@@tileSize --> <br/> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2017 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners.<br> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. </p> </div> </body> </html>