<?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>mimeimagerecordeditor.cpp Example File | Qt NFC 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="qtnfc-index.html">Qt NFC</a></td><td ><a href="qtnfc-ndefeditor-example.html">NDEF Editor Example</a></td><td >mimeimagerecordeditor.cpp Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right"><a href="qtnfc-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">mimeimagerecordeditor.cpp Example File</h1> <span class="subtitle">ndefeditor/mimeimagerecordeditor.cpp</span> <!-- $$$ndefeditor/mimeimagerecordeditor.cpp-description --> <div class="descr"> <a name="details"></a> <pre class="cpp"> <span class="comment">/**************************************************************************** ** ** Copyright (C) 2017 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the QtNfc module 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 "mimeimagerecordeditor.h"</span> <span class="preprocessor">#include "ui_mimeimagerecordeditor.h"</span> <span class="preprocessor">#include <QtGui/QImageReader></span> <span class="preprocessor">#include <QtWidgets/QFileDialog></span> <span class="preprocessor">#include <QtCore/QBuffer></span> <span class="keyword">static</span> <span class="type">QString</span> imageFormatToMimeType(<span class="keyword">const</span> <span class="type">QByteArray</span> <span class="operator">&</span>format) { <span class="keyword">if</span> (format <span class="operator">=</span><span class="operator">=</span> <span class="string">"bmp"</span>) <span class="keyword">return</span> <span class="type">QStringLiteral</span>(<span class="string">"image/bmp"</span>); <span class="keyword">else</span> <span class="keyword">if</span> (format <span class="operator">=</span><span class="operator">=</span> <span class="string">"gif"</span>) <span class="keyword">return</span> <span class="type">QStringLiteral</span>(<span class="string">"image/gif"</span>); <span class="keyword">else</span> <span class="keyword">if</span> (format <span class="operator">=</span><span class="operator">=</span> <span class="string">"jpg"</span> <span class="operator">|</span><span class="operator">|</span> format <span class="operator">=</span><span class="operator">=</span> <span class="string">"jpeg"</span>) <span class="keyword">return</span> <span class="type">QStringLiteral</span>(<span class="string">"image/jpeg"</span>); <span class="keyword">else</span> <span class="keyword">if</span> (format <span class="operator">=</span><span class="operator">=</span> <span class="string">"mng"</span>) <span class="keyword">return</span> <span class="type">QStringLiteral</span>(<span class="string">"video/x-mng"</span>); <span class="keyword">else</span> <span class="keyword">if</span> (format <span class="operator">=</span><span class="operator">=</span> <span class="string">"png"</span>) <span class="keyword">return</span> <span class="type">QStringLiteral</span>(<span class="string">"image/png"</span>); <span class="keyword">else</span> <span class="keyword">if</span> (format <span class="operator">=</span><span class="operator">=</span> <span class="string">"pbm"</span>) <span class="keyword">return</span> <span class="type">QStringLiteral</span>(<span class="string">"image/x-portable-bitmap"</span>); <span class="keyword">else</span> <span class="keyword">if</span> (format <span class="operator">=</span><span class="operator">=</span> <span class="string">"pgm"</span>) <span class="keyword">return</span> <span class="type">QStringLiteral</span>(<span class="string">"image/x-portable-graymap"</span>); <span class="keyword">else</span> <span class="keyword">if</span> (format <span class="operator">=</span><span class="operator">=</span> <span class="string">"ppm"</span>) <span class="keyword">return</span> <span class="type">QStringLiteral</span>(<span class="string">"image/x-portable-pixmap"</span>); <span class="keyword">else</span> <span class="keyword">if</span> (format <span class="operator">=</span><span class="operator">=</span> <span class="string">"tiff"</span>) <span class="keyword">return</span> <span class="type">QStringLiteral</span>(<span class="string">"image/tiff"</span>); <span class="keyword">else</span> <span class="keyword">if</span> (format <span class="operator">=</span><span class="operator">=</span> <span class="string">"xbm"</span>) <span class="keyword">return</span> <span class="type">QStringLiteral</span>(<span class="string">"image/x-xbitmap"</span>); <span class="keyword">else</span> <span class="keyword">if</span> (format <span class="operator">=</span><span class="operator">=</span> <span class="string">"xpm"</span>) <span class="keyword">return</span> <span class="type">QStringLiteral</span>(<span class="string">"image/x-xpixmap"</span>); <span class="keyword">else</span> <span class="keyword">if</span> (format <span class="operator">=</span><span class="operator">=</span> <span class="string">"svg"</span>) <span class="keyword">return</span> <span class="type">QStringLiteral</span>(<span class="string">"image/svg+xml"</span>); <span class="keyword">else</span> <span class="keyword">return</span> <span class="type">QString</span>(); } MimeImageRecordEditor<span class="operator">::</span>MimeImageRecordEditor(<span class="type">QWidget</span> <span class="operator">*</span>parent) : <span class="type">QWidget</span>(parent)<span class="operator">,</span> ui(<span class="keyword">new</span> Ui<span class="operator">::</span>MimeImageRecordEditor) { ui<span class="operator">-</span><span class="operator">></span>setupUi(<span class="keyword">this</span>); } MimeImageRecordEditor<span class="operator">::</span><span class="operator">~</span>MimeImageRecordEditor() { <span class="keyword">delete</span> ui; } <span class="type">void</span> MimeImageRecordEditor<span class="operator">::</span>setRecord(<span class="keyword">const</span> <span class="type"><a href="qndefrecord.html">QNdefRecord</a></span> <span class="operator">&</span>record) { m_record <span class="operator">=</span> record; <span class="type">QByteArray</span> data <span class="operator">=</span> record<span class="operator">.</span>payload(); <span class="type">QBuffer</span> buffer(<span class="operator">&</span>data); buffer<span class="operator">.</span>open(<span class="type">QIODevice</span><span class="operator">::</span>ReadOnly); <span class="type">QImageReader</span> reader(<span class="operator">&</span>buffer); ui<span class="operator">-</span><span class="operator">></span>mimeImageType<span class="operator">-</span><span class="operator">></span>setText(imageFormatToMimeType(reader<span class="operator">.</span>format())); ui<span class="operator">-</span><span class="operator">></span>mimeImageImage<span class="operator">-</span><span class="operator">></span>setPixmap(<span class="type">QPixmap</span><span class="operator">::</span>fromImage(reader<span class="operator">.</span>read())); ui<span class="operator">-</span><span class="operator">></span>mimeImageFile<span class="operator">-</span><span class="operator">></span>clear(); } <span class="type"><a href="qndefrecord.html">QNdefRecord</a></span> MimeImageRecordEditor<span class="operator">::</span>record() <span class="keyword">const</span> { <span class="keyword">return</span> m_record; } <span class="type">void</span> MimeImageRecordEditor<span class="operator">::</span>on_mimeImageOpen_clicked() { <span class="type">QString</span> mimeDataFile <span class="operator">=</span> <span class="type">QFileDialog</span><span class="operator">::</span>getOpenFileName(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">"Select Image File"</span>)); <span class="keyword">if</span> (mimeDataFile<span class="operator">.</span>isEmpty()) <span class="keyword">return</span>; <span class="type">QFile</span> imageFile(mimeDataFile); <span class="keyword">if</span> (<span class="operator">!</span>imageFile<span class="operator">.</span>open(<span class="type">QIODevice</span><span class="operator">::</span>ReadOnly)) { ui<span class="operator">-</span><span class="operator">></span>mimeImageFile<span class="operator">-</span><span class="operator">></span>clear(); ui<span class="operator">-</span><span class="operator">></span>mimeImageImage<span class="operator">-</span><span class="operator">></span>clear(); } <span class="type">QByteArray</span> imageData <span class="operator">=</span> imageFile<span class="operator">.</span>readAll(); <span class="type">QBuffer</span> buffer(<span class="operator">&</span>imageData); buffer<span class="operator">.</span>open(<span class="type">QIODevice</span><span class="operator">::</span>ReadOnly); <span class="type">QImageReader</span> reader(<span class="operator">&</span>buffer); <span class="type">QString</span> mimeType <span class="operator">=</span> imageFormatToMimeType(reader<span class="operator">.</span>format()); ui<span class="operator">-</span><span class="operator">></span>mimeImageType<span class="operator">-</span><span class="operator">></span>setText(mimeType); <span class="type">QImage</span> image <span class="operator">=</span> reader<span class="operator">.</span>read(); ui<span class="operator">-</span><span class="operator">></span>mimeImageFile<span class="operator">-</span><span class="operator">></span>setText(mimeDataFile); ui<span class="operator">-</span><span class="operator">></span>mimeImageImage<span class="operator">-</span><span class="operator">></span>setPixmap(<span class="type">QPixmap</span><span class="operator">::</span>fromImage(image)); m_record<span class="operator">.</span>setTypeNameFormat(<span class="type"><a href="qndefrecord.html">QNdefRecord</a></span><span class="operator">::</span>Mime); m_record<span class="operator">.</span>setType(mimeType<span class="operator">.</span>toLatin1()); m_record<span class="operator">.</span>setPayload(imageData); } </pre> </div> <!-- @@@ndefeditor/mimeimagerecordeditor.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>