<?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>fademessage.cpp Example File | Qt Widgets 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="qtwidgets-index.html">Qt Widgets</a></td><td ><a href="qtwidgets-effects-fademessage-example.html">Fade Message Effect Example</a></td><td >fademessage.cpp Example File</td></tr></table><table class="buildversion"><tr>
<td id="buildversion" width="100%" align="right"><a href="qtwidgets-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">fademessage.cpp Example File</h1>
<span class="subtitle">effects/fademessage/fademessage.cpp</span>
<!-- $$$effects/fademessage/fademessage.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 "fademessage.h"</span>
<span class="preprocessor">#include <QtWidgets></span>
FadeMessage<span class="operator">::</span>FadeMessage(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent): <span class="type"><a href="qgraphicsview.html">QGraphicsView</a></span>(parent)
{
setScene(<span class="operator">&</span>m_scene);
setHorizontalScrollBarPolicy(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>ScrollBarAlwaysOff);
setVerticalScrollBarPolicy(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>ScrollBarAlwaysOff);
setupScene();
m_animation <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtcore/qpropertyanimation.html">QPropertyAnimation</a></span>(m_effect<span class="operator">,</span> <span class="string">"strength"</span><span class="operator">,</span> <span class="keyword">this</span>);
m_animation<span class="operator">-</span><span class="operator">></span>setDuration(<span class="number">500</span>);
m_animation<span class="operator">-</span><span class="operator">></span>setEasingCurve(<span class="type"><a href="../qtcore/qeasingcurve.html">QEasingCurve</a></span><span class="operator">::</span>InOutSine);
m_animation<span class="operator">-</span><span class="operator">></span>setStartValue(<span class="number">0</span>);
m_animation<span class="operator">-</span><span class="operator">></span>setEndValue(<span class="number">1</span>);
setRenderHint(<span class="type"><a href="../qtgui/qpainter.html">QPainter</a></span><span class="operator">::</span>Antialiasing<span class="operator">,</span> <span class="keyword">true</span>);
setFrameStyle(<span class="type"><a href="qframe.html">QFrame</a></span><span class="operator">::</span>NoFrame);
}
<span class="type">void</span> FadeMessage<span class="operator">::</span>togglePopup()
{
<span class="keyword">if</span> (m_message<span class="operator">-</span><span class="operator">></span>isVisible()) {
m_message<span class="operator">-</span><span class="operator">></span>setVisible(<span class="keyword">false</span>);
m_animation<span class="operator">-</span><span class="operator">></span>setDirection(<span class="type"><a href="../qtcore/qabstractanimation.html">QAbstractAnimation</a></span><span class="operator">::</span>Backward);
} <span class="keyword">else</span> {
m_message<span class="operator">-</span><span class="operator">></span>setVisible(<span class="keyword">true</span>);
m_animation<span class="operator">-</span><span class="operator">></span>setDirection(<span class="type"><a href="../qtcore/qabstractanimation.html">QAbstractAnimation</a></span><span class="operator">::</span>Forward);
}
m_animation<span class="operator">-</span><span class="operator">></span>start();
}
<span class="type">void</span> FadeMessage<span class="operator">::</span>setupScene()
{
<span class="type"><a href="qgraphicsrectitem.html">QGraphicsRectItem</a></span> <span class="operator">*</span>parent <span class="operator">=</span> m_scene<span class="operator">.</span>addRect(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">800</span><span class="operator">,</span> <span class="number">600</span>);
parent<span class="operator">-</span><span class="operator">></span>setPen(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>NoPen);
parent<span class="operator">-</span><span class="operator">></span>setZValue(<span class="number">0</span>);
<span class="type"><a href="qgraphicspixmapitem.html">QGraphicsPixmapItem</a></span> <span class="operator">*</span>bg <span class="operator">=</span> m_scene<span class="operator">.</span>addPixmap(<span class="type"><a href="../qtgui/qpixmap.html">QPixmap</a></span>(<span class="string">":/background.jpg"</span>));
bg<span class="operator">-</span><span class="operator">></span>setParentItem(parent);
bg<span class="operator">-</span><span class="operator">></span>setZValue(<span class="operator">-</span><span class="number">1</span>);
<span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">1</span>; i <span class="operator"><</span> <span class="number">5</span>; <span class="operator">+</span><span class="operator">+</span>i)
<span class="keyword">for</span> (<span class="type">int</span> j <span class="operator">=</span> <span class="number">2</span>; j <span class="operator"><</span> <span class="number">5</span>; <span class="operator">+</span><span class="operator">+</span>j) {
<span class="type"><a href="qgraphicsrectitem.html">QGraphicsRectItem</a></span> <span class="operator">*</span>item <span class="operator">=</span> m_scene<span class="operator">.</span>addRect(i <span class="operator">*</span> <span class="number">50</span><span class="operator">,</span> (j <span class="operator">-</span> <span class="number">1</span>) <span class="operator">*</span> <span class="number">50</span><span class="operator">,</span> <span class="number">38</span><span class="operator">,</span> <span class="number">38</span>);
item<span class="operator">-</span><span class="operator">></span>setParentItem(parent);
item<span class="operator">-</span><span class="operator">></span>setZValue(<span class="number">1</span>);
<span class="type">int</span> hue <span class="operator">=</span> <span class="number">12</span> <span class="operator">*</span> (i <span class="operator">*</span> <span class="number">5</span> <span class="operator">+</span> j);
item<span class="operator">-</span><span class="operator">></span>setBrush(<span class="type"><a href="../qtgui/qcolor.html">QColor</a></span><span class="operator">::</span>fromHsv(hue<span class="operator">,</span> <span class="number">128</span><span class="operator">,</span> <span class="number">128</span>));
}
<span class="type"><a href="../qtgui/qfont.html">QFont</a></span> font;
font<span class="operator">.</span>setPointSize(font<span class="operator">.</span>pointSize() <span class="operator">*</span> <span class="number">2</span>);
font<span class="operator">.</span>setBold(<span class="keyword">true</span>);
<span class="type"><a href="../qtgui/qfontmetrics.html">QFontMetrics</a></span> fontMetrics(font);
<span class="type">int</span> fh <span class="operator">=</span> fontMetrics<span class="operator">.</span>height();
<span class="type"><a href="../qtcore/qstring.html">QString</a></span> sceneText <span class="operator">=</span> <span class="string">"Qt Everywhere!"</span>;
<span class="type">int</span> sceneTextWidth <span class="operator">=</span> fontMetrics<span class="operator">.</span>horizontalAdvance(sceneText);
<span class="type"><a href="qgraphicsrectitem.html">QGraphicsRectItem</a></span> <span class="operator">*</span>block <span class="operator">=</span> m_scene<span class="operator">.</span>addRect(<span class="number">50</span><span class="operator">,</span> <span class="number">300</span><span class="operator">,</span> sceneTextWidth<span class="operator">,</span> fh <span class="operator">+</span> <span class="number">3</span>);
block<span class="operator">-</span><span class="operator">></span>setPen(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>NoPen);
block<span class="operator">-</span><span class="operator">></span>setBrush(<span class="type"><a href="../qtgui/qcolor.html">QColor</a></span>(<span class="number">102</span><span class="operator">,</span> <span class="number">153</span><span class="operator">,</span> <span class="number">51</span>));
<span class="type"><a href="qgraphicstextitem.html">QGraphicsTextItem</a></span> <span class="operator">*</span>text <span class="operator">=</span> m_scene<span class="operator">.</span>addText(sceneText<span class="operator">,</span> font);
text<span class="operator">-</span><span class="operator">></span>setDefaultTextColor(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>white);
text<span class="operator">-</span><span class="operator">></span>setPos(<span class="number">50</span><span class="operator">,</span> <span class="number">300</span>);
block<span class="operator">-</span><span class="operator">></span>setZValue(<span class="number">2</span>);
block<span class="operator">-</span><span class="operator">></span>hide();
text<span class="operator">-</span><span class="operator">></span>setParentItem(block);
m_message <span class="operator">=</span> block;
m_effect <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgraphicscolorizeeffect.html">QGraphicsColorizeEffect</a></span>;
m_effect<span class="operator">-</span><span class="operator">></span>setColor(<span class="type"><a href="../qtgui/qcolor.html">QColor</a></span>(<span class="number">122</span><span class="operator">,</span> <span class="number">193</span><span class="operator">,</span> <span class="number">66</span>));
m_effect<span class="operator">-</span><span class="operator">></span>setStrength(<span class="number">0</span>);
m_effect<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">true</span>);
parent<span class="operator">-</span><span class="operator">></span>setGraphicsEffect(m_effect);
<span class="type"><a href="qpushbutton.html">QPushButton</a></span> <span class="operator">*</span>press <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>;
press<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"Press me"</span>));
connect(press<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> SLOT(togglePopup()));
m_scene<span class="operator">.</span>addWidget(press);
press<span class="operator">-</span><span class="operator">></span>move(<span class="number">300</span><span class="operator">,</span> <span class="number">500</span>);
}
</pre>
</div>
<!-- @@@effects/fademessage/fademessage.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>
distrib
>
Mageia
>
7
>
armv7hl
>
media
>
core-updates
>
by-pkgid
>
d5e62c01ae8d1e579463c6a871dd44bf
>
files
>
4358
