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Breadcrumbs go here --> </ul> </div> <div class="toolbuttons toolblock"> <ul> <li id="smallA" class="t_button">A</li> <li id="medA" class="t_button active">A</li> <li id="bigA" class="t_button">A</li> <li id="print" class="t_button"><a href="javascript:this.print();"> <span>Print</span></a></li> </ul> </div> </div> <div class="content mainContent"> <h1 class="title">blurpicker.cpp Example File</h1> <span class="small-subtitle">effects/blurpicker/blurpicker.cpp</span> <!-- $$$effects/blurpicker/blurpicker.cpp-description --> <div class="descr"> <a name="details"></a> <pre class="cpp"> <span class="comment">/**************************************************************************** ** ** Copyright (C) 2015 The Qt Company Ltd. ** Contact: http://www.qt.io/licensing/ ** ** This file is part of the examples of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** 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 "blurpicker.h"</span> <span class="preprocessor">#include <QtGui></span> <span class="preprocessor">#include "blureffect.h"</span> <span class="preprocessor">#ifndef M_PI</span> <span class="preprocessor">#define M_PI 3.14159265358979323846</span> <span class="preprocessor">#endif</span> BlurPicker<span class="operator">::</span>BlurPicker(<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)<span class="operator">,</span> m_index(<span class="number">0.0</span>)<span class="operator">,</span> m_animation(<span class="keyword">this</span><span class="operator">,</span> <span class="string">"index"</span>) { setBackgroundBrush(<span class="type"><a href="qpixmap.html">QPixmap</a></span>(<span class="string">":/images/background.jpg"</span>)); setScene(<span class="keyword">new</span> <span class="type"><a href="qgraphicsscene.html">QGraphicsScene</a></span>(<span class="keyword">this</span>)); setupScene(); setIndex(<span class="number">0</span>); m_animation<span class="operator">.</span>setDuration(<span class="number">400</span>); m_animation<span class="operator">.</span>setEasingCurve(<span class="type"><a href="qeasingcurve.html">QEasingCurve</a></span><span class="operator">::</span>InOutSine); setRenderHint(<span class="type"><a href="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"><a href="qtglobal.html#qreal-typedef">qreal</a></span> BlurPicker<span class="operator">::</span>index() <span class="keyword">const</span> { <span class="keyword">return</span> m_index; } <span class="type">void</span> BlurPicker<span class="operator">::</span>setIndex(<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> index) { m_index <span class="operator">=</span> index; <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> baseline <span class="operator">=</span> <span class="number">0</span>; <span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> m_icons<span class="operator">.</span>count(); <span class="operator">+</span><span class="operator">+</span>i) { <span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span> <span class="operator">*</span>icon <span class="operator">=</span> m_icons<span class="operator">[</span>i<span class="operator">]</span>; <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> a <span class="operator">=</span> ((i <span class="operator">+</span> m_index) <span class="operator">*</span> <span class="number">2</span> <span class="operator">*</span> M_PI) <span class="operator">/</span> m_icons<span class="operator">.</span>count(); <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> xs <span class="operator">=</span> <span class="number">170</span> <span class="operator">*</span> sin(a); <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> ys <span class="operator">=</span> <span class="number">100</span> <span class="operator">*</span> cos(a); <span class="type"><a href="qpointf.html">QPointF</a></span> pos(xs<span class="operator">,</span> ys); pos <span class="operator">=</span> <span class="type"><a href="qtransform.html">QTransform</a></span>()<span class="operator">.</span>rotate(<span class="operator">-</span><span class="number">20</span>)<span class="operator">.</span>map(pos); pos <span class="operator">-</span><span class="operator">=</span> <span class="type"><a href="qpointf.html">QPointF</a></span>(<span class="number">40</span><span class="operator">,</span> <span class="number">40</span>); icon<span class="operator">-</span><span class="operator">></span>setPos(pos); baseline <span class="operator">=</span> <a href="qtglobal.html#qMax">qMax</a>(baseline<span class="operator">,</span> ys); <span class="keyword">static_cast</span><span class="operator"><</span>BlurEffect <span class="operator">*</span><span class="operator">></span>(icon<span class="operator">-</span><span class="operator">></span>graphicsEffect())<span class="operator">-</span><span class="operator">></span>setBaseLine(baseline); } scene()<span class="operator">-</span><span class="operator">></span>update(); } <span class="type">void</span> BlurPicker<span class="operator">::</span>setupScene() { scene()<span class="operator">-</span><span class="operator">></span>setSceneRect(<span class="operator">-</span><span class="number">200</span><span class="operator">,</span> <span class="operator">-</span><span class="number">120</span><span class="operator">,</span> <span class="number">400</span><span class="operator">,</span> <span class="number">240</span>); <span class="type"><a href="qstringlist.html">QStringList</a></span> names; names <span class="operator"><</span><span class="operator"><</span> <span class="string">":/images/accessories-calculator.png"</span>; names <span class="operator"><</span><span class="operator"><</span> <span class="string">":/images/accessories-text-editor.png"</span>; names <span class="operator"><</span><span class="operator"><</span> <span class="string">":/images/help-browser.png"</span>; names <span class="operator"><</span><span class="operator"><</span> <span class="string">":/images/internet-group-chat.png"</span>; names <span class="operator"><</span><span class="operator"><</span> <span class="string">":/images/internet-mail.png"</span>; names <span class="operator"><</span><span class="operator"><</span> <span class="string">":/images/internet-web-browser.png"</span>; names <span class="operator"><</span><span class="operator"><</span> <span class="string">":/images/office-calendar.png"</span>; names <span class="operator"><</span><span class="operator"><</span> <span class="string">":/images/system-users.png"</span>; <span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> names<span class="operator">.</span>count(); i<span class="operator">+</span><span class="operator">+</span>) { <span class="type"><a href="qpixmap.html">QPixmap</a></span> pixmap(names<span class="operator">[</span>i<span class="operator">]</span>); <span class="type"><a href="qgraphicspixmapitem.html">QGraphicsPixmapItem</a></span> <span class="operator">*</span>icon <span class="operator">=</span> scene()<span class="operator">-</span><span class="operator">></span>addPixmap(pixmap); icon<span class="operator">-</span><span class="operator">></span>setZValue(<span class="number">1</span>); icon<span class="operator">-</span><span class="operator">></span>setGraphicsEffect(<span class="keyword">new</span> BlurEffect(icon)); m_icons <span class="operator"><</span><span class="operator"><</span> icon; } <span class="type"><a href="qgraphicspixmapitem.html">QGraphicsPixmapItem</a></span> <span class="operator">*</span>bg <span class="operator">=</span> scene()<span class="operator">-</span><span class="operator">></span>addPixmap(<span class="type"><a href="qpixmap.html">QPixmap</a></span>(<span class="string">":/images/background.jpg"</span>)); bg<span class="operator">-</span><span class="operator">></span>setZValue(<span class="number">0</span>); bg<span class="operator">-</span><span class="operator">></span>setPos(<span class="operator">-</span><span class="number">200</span><span class="operator">,</span> <span class="operator">-</span><span class="number">150</span>); } <span class="type">void</span> BlurPicker<span class="operator">::</span>keyPressEvent(<span class="type"><a href="qkeyevent.html">QKeyEvent</a></span> <span class="operator">*</span>event) { <span class="type">int</span> delta <span class="operator">=</span> <span class="number">0</span>; <span class="keyword">switch</span> (event<span class="operator">-</span><span class="operator">></span>key()) { <span class="keyword">case</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>Key_Left: delta <span class="operator">=</span> <span class="operator">-</span><span class="number">1</span>; <span class="keyword">break</span>; <span class="keyword">case</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>Key_Right: delta <span class="operator">=</span> <span class="number">1</span>; <span class="keyword">break</span>; <span class="keyword">default</span>: <span class="keyword">break</span>; } <span class="keyword">if</span> (m_animation<span class="operator">.</span>state() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qabstractanimation.html">QAbstractAnimation</a></span><span class="operator">::</span>Stopped <span class="operator">&</span><span class="operator">&</span> delta) { m_animation<span class="operator">.</span>setEndValue(m_index <span class="operator">+</span> delta); m_animation<span class="operator">.</span>start(); event<span class="operator">-</span><span class="operator">></span>accept(); } } <span class="type">void</span> BlurPicker<span class="operator">::</span>resizeEvent(<span class="type"><a href="qresizeevent.html">QResizeEvent</a></span> <span class="operator">*</span><span class="comment">/*event*/</span>) { <span class="preprocessor">#if defined(Q_WS_S60) || defined(Q_WS_MAEMO_5) || defined(Q_WS_SIMULATOR)</span> fitInView(sceneRect()<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>KeepAspectRatio); <span class="preprocessor">#endif</span> } <span class="type">void</span> BlurPicker<span class="operator">::</span>mousePressEvent(<span class="type"><a href="qmouseevent.html">QMouseEvent</a></span> <span class="operator">*</span>event) { <span class="type">int</span> delta <span class="operator">=</span> <span class="number">0</span>; <span class="keyword">if</span>(event<span class="operator">-</span><span class="operator">></span>x() <span class="operator">></span> (width() <span class="operator">/</span> <span class="number">2</span>)) { delta <span class="operator">=</span> <span class="number">1</span>; } <span class="keyword">else</span> { delta <span class="operator">=</span> <span class="operator">-</span><span class="number">1</span>; } <span class="keyword">if</span> (m_animation<span class="operator">.</span>state() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qabstractanimation.html">QAbstractAnimation</a></span><span class="operator">::</span>Stopped <span class="operator">&</span><span class="operator">&</span> delta) { m_animation<span class="operator">.</span>setEndValue(m_index <span class="operator">+</span> delta); m_animation<span class="operator">.</span>start(); event<span class="operator">-</span><span class="operator">></span>accept(); } }</pre> </div> <!-- @@@effects/blurpicker/blurpicker.cpp --> </div> </div> </div> <div class="ft"> <span></span> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2015 The Qt Company Ltd. 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