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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">view.cpp Example File</h1> <span class="small-subtitle">sql/drilldown/view.cpp</span> <!-- $$$sql/drilldown/view.cpp-description --> <div class="descr"> <a name="details"></a> <pre class="cpp"> <span class="comment">/**************************************************************************** ** ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). ** Contact: http://www.qt-project.org/legal ** ** 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 Digia Plc and its Subsidiary(-ies) 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 "informationwindow.h"</span> <span class="preprocessor">#include "imageitem.h"</span> <span class="preprocessor">#include "view.h"</span> View<span class="operator">::</span>View(<span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&</span>offices<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&</span>images<span class="operator">,</span> <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) { officeTable <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qsqlrelationaltablemodel.html">QSqlRelationalTableModel</a></span>(<span class="keyword">this</span>); officeTable<span class="operator">-</span><span class="operator">></span>setTable(offices); officeTable<span class="operator">-</span><span class="operator">></span>setRelation(<span class="number">1</span><span class="operator">,</span> <span class="type"><a href="qsqlrelation.html">QSqlRelation</a></span>(images<span class="operator">,</span> <span class="string">"locationid"</span><span class="operator">,</span> <span class="string">"file"</span>)); officeTable<span class="operator">-</span><span class="operator">></span>select(); scene <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgraphicsscene.html">QGraphicsScene</a></span>(<span class="keyword">this</span>); scene<span class="operator">-</span><span class="operator">></span>setSceneRect(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">465</span><span class="operator">,</span> <span class="number">615</span>); setScene(scene); addItems(); <span class="type"><a href="qgraphicspixmapitem.html">QGraphicsPixmapItem</a></span> <span class="operator">*</span>logo <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">":/logo.png"</span>)); logo<span class="operator">-</span><span class="operator">></span>setPos(<span class="number">30</span><span class="operator">,</span> <span class="number">515</span>); <span class="preprocessor">#if !defined(Q_OS_SYMBIAN) && !defined(Q_WS_MAEMO_5)</span> setMinimumSize(<span class="number">470</span><span class="operator">,</span> <span class="number">620</span>); setMaximumSize(<span class="number">470</span><span class="operator">,</span> <span class="number">620</span>); <span class="preprocessor">#else</span> setDragMode(<span class="type"><a href="qgraphicsview.html">QGraphicsView</a></span><span class="operator">::</span>ScrollHandDrag); <span class="preprocessor">#endif</span> setWindowTitle(tr(<span class="string">"Offices World Wide"</span>)); } <span class="type">void</span> View<span class="operator">::</span>addItems() { <span class="type">int</span> officeCount <span class="operator">=</span> officeTable<span class="operator">-</span><span class="operator">></span>rowCount(); <span class="type">int</span> imageOffset <span class="operator">=</span> <span class="number">150</span>; <span class="type">int</span> leftMargin <span class="operator">=</span> <span class="number">70</span>; <span class="type">int</span> topMargin <span class="operator">=</span> <span class="number">40</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> officeCount; i<span class="operator">+</span><span class="operator">+</span>) { ImageItem <span class="operator">*</span>image; <span class="type"><a href="qgraphicstextitem.html">QGraphicsTextItem</a></span> <span class="operator">*</span>label; <span class="type"><a href="qsqlrecord.html">QSqlRecord</a></span> record <span class="operator">=</span> officeTable<span class="operator">-</span><span class="operator">></span>record(i); <span class="type">int</span> id <span class="operator">=</span> record<span class="operator">.</span>value(<span class="string">"id"</span>)<span class="operator">.</span>toInt(); <span class="type"><a href="qstring.html">QString</a></span> file <span class="operator">=</span> record<span class="operator">.</span>value(<span class="string">"file"</span>)<span class="operator">.</span>toString(); <span class="type"><a href="qstring.html">QString</a></span> location <span class="operator">=</span> record<span class="operator">.</span>value(<span class="string">"location"</span>)<span class="operator">.</span>toString(); <span class="type">int</span> columnOffset <span class="operator">=</span> ((i <span class="operator">/</span> <span class="number">3</span>) <span class="operator">*</span> <span class="number">37</span>); <span class="type">int</span> x <span class="operator">=</span> ((i <span class="operator">/</span> <span class="number">3</span>) <span class="operator">*</span> imageOffset) <span class="operator">+</span> leftMargin <span class="operator">+</span> columnOffset; <span class="type">int</span> y <span class="operator">=</span> ((i <span class="operator">%</span> <span class="number">3</span>) <span class="operator">*</span> imageOffset) <span class="operator">+</span> topMargin; image <span class="operator">=</span> <span class="keyword">new</span> ImageItem(id<span class="operator">,</span> <span class="type"><a href="qpixmap.html">QPixmap</a></span>(<span class="string">":/"</span> <span class="operator">+</span> file)); image<span class="operator">-</span><span class="operator">></span>setData(<span class="number">0</span><span class="operator">,</span> i); image<span class="operator">-</span><span class="operator">></span>setPos(x<span class="operator">,</span> y); scene<span class="operator">-</span><span class="operator">></span>addItem(image); label <span class="operator">=</span> scene<span class="operator">-</span><span class="operator">></span>addText(location); <span class="type"><a href="qpointf.html">QPointF</a></span> labelOffset((<span class="number">150</span> <span class="operator">-</span> label<span class="operator">-</span><span class="operator">></span>boundingRect()<span class="operator">.</span>width()) <span class="operator">/</span> <span class="number">2</span><span class="operator">,</span> <span class="number">120.0</span>); label<span class="operator">-</span><span class="operator">></span>setPos(<span class="type"><a href="qpointf.html">QPointF</a></span>(x<span class="operator">,</span> y) <span class="operator">+</span> labelOffset); } } <span class="type">void</span> View<span class="operator">::</span>mouseReleaseEvent(<span class="type"><a href="qmouseevent.html">QMouseEvent</a></span> <span class="operator">*</span>event) { <span class="keyword">if</span> (<span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span> <span class="operator">*</span>item <span class="operator">=</span> itemAt(event<span class="operator">-</span><span class="operator">></span>pos())) { <span class="keyword">if</span> (ImageItem <span class="operator">*</span>image <span class="operator">=</span> qgraphicsitem_cast<span class="operator"><</span>ImageItem <span class="operator">*</span><span class="operator">></span>(item)) showInformation(image); } <span class="type"><a href="qgraphicsview.html">QGraphicsView</a></span><span class="operator">::</span>mouseReleaseEvent(event); } <span class="type">void</span> View<span class="operator">::</span>showInformation(ImageItem <span class="operator">*</span>image) { <span class="type">int</span> id <span class="operator">=</span> image<span class="operator">-</span><span class="operator">></span>id(); <span class="keyword">if</span> (id <span class="operator"><</span> <span class="number">0</span> <span class="operator">|</span><span class="operator">|</span> id <span class="operator">></span><span class="operator">=</span> officeTable<span class="operator">-</span><span class="operator">></span>rowCount()) <span class="keyword">return</span>; InformationWindow <span class="operator">*</span>window <span class="operator">=</span> findWindow(id); <span class="keyword">if</span> (window <span class="operator">&</span><span class="operator">&</span> window<span class="operator">-</span><span class="operator">></span>isVisible()) { window<span class="operator">-</span><span class="operator">></span>raise(); window<span class="operator">-</span><span class="operator">></span>activateWindow(); } <span class="keyword">else</span> <span class="keyword">if</span> (window <span class="operator">&</span><span class="operator">&</span> <span class="operator">!</span>window<span class="operator">-</span><span class="operator">></span>isVisible()) { <span class="preprocessor">#ifndef Q_OS_SYMBIAN</span> window<span class="operator">-</span><span class="operator">></span>show(); <span class="preprocessor">#else</span> window<span class="operator">-</span><span class="operator">></span>showMaximized(); <span class="preprocessor">#endif</span> } <span class="keyword">else</span> { InformationWindow <span class="operator">*</span>window; window <span class="operator">=</span> <span class="keyword">new</span> InformationWindow(id<span class="operator">,</span> officeTable<span class="operator">,</span> <span class="keyword">this</span>); connect(window<span class="operator">,</span> SIGNAL(imageChanged(<span class="type">int</span><span class="operator">,</span><span class="type"><a href="qstring.html">QString</a></span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(updateImage(<span class="type">int</span><span class="operator">,</span><span class="type"><a href="qstring.html">QString</a></span>))); <span class="preprocessor">#ifndef Q_OS_SYMBIAN</span> window<span class="operator">-</span><span class="operator">></span>move(pos() <span class="operator">+</span> <span class="type"><a href="qpoint.html">QPoint</a></span>(<span class="number">20</span><span class="operator">,</span> <span class="number">40</span>)); window<span class="operator">-</span><span class="operator">></span>show(); <span class="preprocessor">#else</span> window<span class="operator">-</span><span class="operator">></span>showMaximized(); <span class="preprocessor">#endif</span> informationWindows<span class="operator">.</span>append(window); } } <span class="type">void</span> View<span class="operator">::</span>updateImage(<span class="type">int</span> id<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&</span>fileName) { <span class="type"><a href="qlist.html">QList</a></span><span class="operator"><</span><span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span> <span class="operator">*</span><span class="operator">></span> items <span class="operator">=</span> scene<span class="operator">-</span><span class="operator">></span>items(); <span class="keyword">while</span>(<span class="operator">!</span>items<span class="operator">.</span>empty()) { <span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span> <span class="operator">*</span>item <span class="operator">=</span> items<span class="operator">.</span>takeFirst(); <span class="keyword">if</span> (ImageItem <span class="operator">*</span>image <span class="operator">=</span> qgraphicsitem_cast<span class="operator"><</span>ImageItem <span class="operator">*</span><span class="operator">></span>(item)) { <span class="keyword">if</span> (image<span class="operator">-</span><span class="operator">></span>id() <span class="operator">=</span><span class="operator">=</span> id){ image<span class="operator">-</span><span class="operator">></span>setPixmap(<span class="type"><a href="qpixmap.html">QPixmap</a></span>(<span class="string">":/"</span> <span class="operator">+</span>fileName)); image<span class="operator">-</span><span class="operator">></span>adjust(); <span class="keyword">break</span>; } } } } InformationWindow<span class="operator">*</span> View<span class="operator">::</span>findWindow(<span class="type">int</span> id) { <span class="type"><a href="qlist.html">QList</a></span><span class="operator"><</span>InformationWindow<span class="operator">*</span><span class="operator">></span><span class="operator">::</span>iterator i<span class="operator">,</span> beginning<span class="operator">,</span> end; beginning <span class="operator">=</span> informationWindows<span class="operator">.</span>begin(); end <span class="operator">=</span> informationWindows<span class="operator">.</span>end(); <span class="keyword">for</span> (i <span class="operator">=</span> beginning; i <span class="operator">!</span><span class="operator">=</span> end; <span class="operator">+</span><span class="operator">+</span>i) { InformationWindow <span class="operator">*</span>window <span class="operator">=</span> (<span class="operator">*</span>i); <span class="keyword">if</span> (window <span class="operator">&</span><span class="operator">&</span> (window<span class="operator">-</span><span class="operator">></span>id() <span class="operator">=</span><span class="operator">=</span> id)) <span class="keyword">return</span> window; } <span class="keyword">return</span> <span class="number">0</span>; }</pre> </div> <!-- @@@sql/drilldown/view.cpp --> </div> </div> </div> <div class="ft"> <span></span> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2013 Digia Plc and/or its subsidiaries. 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