<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>imageitem.cpp Example File | Qt SQL 5.12.6</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 5.12</td><td ><a href="qtsql-index.html">Qt SQL</a></td><td ><a href="qtsql-drilldown-example.html">Drill Down Example</a></td><td >imageitem.cpp Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right"><a href="qtsql-index.html">Qt 5.12.6 Reference Documentation</a></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">imageitem.cpp Example File</h1> <span class="subtitle">drilldown/imageitem.cpp</span> <!-- $$$drilldown/imageitem.cpp-description --> <div class="descr"> <a name="details"></a> <pre class="cpp"> <span class="comment">/**************************************************************************** ** ** Copyright (C) 2016 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the examples of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** BSD License Usage ** Alternatively, you may use this file under the terms of the BSD license ** as follows: ** ** "Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions are ** met: ** * Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** * Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in ** the documentation and/or other materials provided with the ** distribution. ** * Neither the name of The Qt Company Ltd nor the names of its ** contributors may be used to endorse or promote products derived ** from this software without specific prior written permission. ** ** ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ** ** $QT_END_LICENSE$ ** ****************************************************************************/</span> <span class="preprocessor">#include "imageitem.h"</span> ImageItem<span class="operator">::</span>ImageItem(<span class="type">int</span> id<span class="operator">,</span> <span class="keyword">const</span> <span class="type">QPixmap</span> <span class="operator">&</span>pixmap<span class="operator">,</span> <span class="type"><a href="../qtwidgets/qgraphicsitem.html">QGraphicsItem</a></span> <span class="operator">*</span>parent) : <span class="type"><a href="../qtwidgets/qgraphicspixmapitem.html">QGraphicsPixmapItem</a></span>(pixmap<span class="operator">,</span> parent) { recordId <span class="operator">=</span> id; setAcceptHoverEvents(<span class="keyword">true</span>); timeLine<span class="operator">.</span>setDuration(<span class="number">150</span>); timeLine<span class="operator">.</span>setFrameRange(<span class="number">0</span><span class="operator">,</span> <span class="number">150</span>); connect(<span class="operator">&</span>timeLine<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="../qtcore/qtimeline.html">QTimeLine</a></span><span class="operator">::</span>frameChanged<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>ImageItem<span class="operator">::</span>setFrame); connect(<span class="operator">&</span>timeLine<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="../qtcore/qtimeline.html">QTimeLine</a></span><span class="operator">::</span>finished<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>ImageItem<span class="operator">::</span>updateItemPosition); adjust(); } <span class="type">void</span> ImageItem<span class="operator">::</span>hoverEnterEvent(<span class="type"><a href="../qtwidgets/qgraphicsscenehoverevent.html">QGraphicsSceneHoverEvent</a></span> <span class="operator">*</span> <span class="comment">/*event*/</span>) { timeLine<span class="operator">.</span>setDirection(<span class="type"><a href="../qtcore/qtimeline.html">QTimeLine</a></span><span class="operator">::</span>Forward); <span class="keyword">if</span> (z <span class="operator">!</span><span class="operator">=</span> <span class="number">1.0</span>) { z <span class="operator">=</span> <span class="number">1.0</span>; updateItemPosition(); } <span class="keyword">if</span> (timeLine<span class="operator">.</span>state() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="../qtcore/qtimeline.html">QTimeLine</a></span><span class="operator">::</span>NotRunning) timeLine<span class="operator">.</span>start(); } <span class="type">void</span> ImageItem<span class="operator">::</span>hoverLeaveEvent(<span class="type"><a href="../qtwidgets/qgraphicsscenehoverevent.html">QGraphicsSceneHoverEvent</a></span> <span class="operator">*</span> <span class="comment">/*event*/</span>) { timeLine<span class="operator">.</span>setDirection(<span class="type"><a href="../qtcore/qtimeline.html">QTimeLine</a></span><span class="operator">::</span>Backward); <span class="keyword">if</span> (z <span class="operator">!</span><span class="operator">=</span> <span class="number">0.0</span>) z <span class="operator">=</span> <span class="number">0.0</span>; <span class="keyword">if</span> (timeLine<span class="operator">.</span>state() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="../qtcore/qtimeline.html">QTimeLine</a></span><span class="operator">::</span>NotRunning) timeLine<span class="operator">.</span>start(); } <span class="type">void</span> ImageItem<span class="operator">::</span>setFrame(<span class="type">int</span> frame) { adjust(); <span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span> center <span class="operator">=</span> boundingRect()<span class="operator">.</span>center(); setTransform(<span class="type">QTransform</span><span class="operator">::</span>fromTranslate(center<span class="operator">.</span>x()<span class="operator">,</span> center<span class="operator">.</span>y())<span class="operator">,</span> <span class="keyword">true</span>); setTransform(<span class="type">QTransform</span><span class="operator">::</span>fromScale(<span class="number">1</span> <span class="operator">+</span> frame <span class="operator">/</span> <span class="number">330.0</span><span class="operator">,</span> <span class="number">1</span> <span class="operator">+</span> frame <span class="operator">/</span> <span class="number">330.0</span>)<span class="operator">,</span> <span class="keyword">true</span>); setTransform(<span class="type">QTransform</span><span class="operator">::</span>fromTranslate(<span class="operator">-</span>center<span class="operator">.</span>x()<span class="operator">,</span> <span class="operator">-</span>center<span class="operator">.</span>y())<span class="operator">,</span> <span class="keyword">true</span>); } <span class="type">void</span> ImageItem<span class="operator">::</span>adjust() { <span class="type">QMatrix</span> matrix; matrix<span class="operator">.</span>scale(<span class="number">120</span><span class="operator">/</span> boundingRect()<span class="operator">.</span>width()<span class="operator">,</span> <span class="number">120</span><span class="operator">/</span> boundingRect()<span class="operator">.</span>height()); setMatrix(matrix); } <span class="type">int</span> ImageItem<span class="operator">::</span>id() <span class="keyword">const</span> { <span class="keyword">return</span> recordId; } <span class="type">void</span> ImageItem<span class="operator">::</span>updateItemPosition() { setZValue(z); } </pre> </div> <!-- @@@drilldown/imageitem.cpp --> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2019 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>