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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">customproxy.cpp Example File</h1> <span class="small-subtitle">demos/embeddeddialogs/customproxy.cpp</span> <!-- $$$demos/embeddeddialogs/customproxy.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 demonstration applications of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** 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 http://www.qt.io/terms-conditions. For further ** information use the contact form at http://www.qt.io/contact-us. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser ** General Public License version 2.1 or version 3 as published by the Free ** Software Foundation and appearing in the file LICENSE.LGPLv21 and ** LICENSE.LGPLv3 included in the packaging of this file. Please review the ** following information to ensure the GNU Lesser General Public License ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. ** ** As a special exception, The Qt Company gives you certain additional ** rights. These rights are described in The Qt Company LGPL Exception ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU ** General Public License version 3.0 as published by the Free Software ** Foundation and appearing in the file LICENSE.GPL included in the ** packaging of this file. Please review the following information to ** ensure the GNU General Public License version 3.0 requirements will be ** met: http://www.gnu.org/copyleft/gpl.html. ** ** $QT_END_LICENSE$ ** ****************************************************************************/</span> <span class="preprocessor">#include "customproxy.h"</span> <span class="preprocessor">#include <QtGui></span> CustomProxy<span class="operator">::</span>CustomProxy(<span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span> <span class="operator">*</span>parent<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>WindowFlags wFlags) : <span class="type"><a href="qgraphicsproxywidget.html">QGraphicsProxyWidget</a></span>(parent<span class="operator">,</span> wFlags)<span class="operator">,</span> popupShown(<span class="keyword">false</span>)<span class="operator">,</span> currentPopup(<span class="number">0</span>) { timeLine <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qtimeline.html">QTimeLine</a></span>(<span class="number">250</span><span class="operator">,</span> <span class="keyword">this</span>); connect(timeLine<span class="operator">,</span> SIGNAL(valueChanged(<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(updateStep(<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span>))); connect(timeLine<span class="operator">,</span> SIGNAL(stateChanged(<span class="type"><a href="qtimeline.html">QTimeLine</a></span><span class="operator">::</span>State))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(stateChanged(<span class="type"><a href="qtimeline.html">QTimeLine</a></span><span class="operator">::</span>State))); } <span class="type"><a href="qrectf.html">QRectF</a></span> CustomProxy<span class="operator">::</span>boundingRect() <span class="keyword">const</span> { <span class="keyword">return</span> <span class="type"><a href="qgraphicsproxywidget.html">QGraphicsProxyWidget</a></span><span class="operator">::</span>boundingRect()<span class="operator">.</span>adjusted(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">10</span><span class="operator">,</span> <span class="number">10</span>); } <span class="type">void</span> CustomProxy<span class="operator">::</span>paintWindowFrame(<span class="type"><a href="qpainter.html">QPainter</a></span> <span class="operator">*</span>painter<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="qstyleoptiongraphicsitem.html">QStyleOptionGraphicsItem</a></span> <span class="operator">*</span>option<span class="operator">,</span> <span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>widget) { <span class="keyword">const</span> <span class="type"><a href="qcolor.html">QColor</a></span> color(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">64</span>); <span class="type"><a href="qrectf.html">QRectF</a></span> r <span class="operator">=</span> windowFrameRect(); <span class="type"><a href="qrectf.html">QRectF</a></span> right(r<span class="operator">.</span>right()<span class="operator">,</span> r<span class="operator">.</span>top() <span class="operator">+</span> <span class="number">10</span><span class="operator">,</span> <span class="number">10</span><span class="operator">,</span> r<span class="operator">.</span>height() <span class="operator">-</span> <span class="number">10</span>); <span class="type"><a href="qrectf.html">QRectF</a></span> bottom(r<span class="operator">.</span>left() <span class="operator">+</span> <span class="number">10</span><span class="operator">,</span> r<span class="operator">.</span>bottom()<span class="operator">,</span> r<span class="operator">.</span>width()<span class="operator">,</span> <span class="number">10</span>); <span class="type">bool</span> intersectsRight <span class="operator">=</span> right<span class="operator">.</span>intersects(option<span class="operator">-</span><span class="operator">></span>exposedRect); <span class="type">bool</span> intersectsBottom <span class="operator">=</span> bottom<span class="operator">.</span>intersects(option<span class="operator">-</span><span class="operator">></span>exposedRect); <span class="keyword">if</span> (intersectsRight <span class="operator">&</span><span class="operator">&</span> intersectsBottom) { <span class="type"><a href="qpainterpath.html">QPainterPath</a></span> path; path<span class="operator">.</span>addRect(right); path<span class="operator">.</span>addRect(bottom); painter<span class="operator">-</span><span class="operator">></span>setPen(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>NoPen); painter<span class="operator">-</span><span class="operator">></span>setBrush(color); painter<span class="operator">-</span><span class="operator">></span>drawPath(path); } <span class="keyword">else</span> <span class="keyword">if</span> (intersectsBottom) { painter<span class="operator">-</span><span class="operator">></span>fillRect(bottom<span class="operator">,</span> color); } <span class="keyword">else</span> <span class="keyword">if</span> (intersectsRight) { painter<span class="operator">-</span><span class="operator">></span>fillRect(right<span class="operator">,</span> color); } <span class="type"><a href="qgraphicsproxywidget.html">QGraphicsProxyWidget</a></span><span class="operator">::</span>paintWindowFrame(painter<span class="operator">,</span> option<span class="operator">,</span> widget); } <span class="type">void</span> CustomProxy<span class="operator">::</span>hoverEnterEvent(<span class="type"><a href="qgraphicsscenehoverevent.html">QGraphicsSceneHoverEvent</a></span> <span class="operator">*</span>event) { <span class="type"><a href="qgraphicsproxywidget.html">QGraphicsProxyWidget</a></span><span class="operator">::</span>hoverEnterEvent(event); scene()<span class="operator">-</span><span class="operator">></span>setActiveWindow(<span class="keyword">this</span>); <span class="keyword">if</span> (timeLine<span class="operator">-</span><span class="operator">></span>currentValue() <span class="operator">!</span><span class="operator">=</span> <span class="number">1</span>) zoomIn(); } <span class="type">void</span> CustomProxy<span class="operator">::</span>hoverLeaveEvent(<span class="type"><a href="qgraphicsscenehoverevent.html">QGraphicsSceneHoverEvent</a></span> <span class="operator">*</span>event) { <span class="type"><a href="qgraphicsproxywidget.html">QGraphicsProxyWidget</a></span><span class="operator">::</span>hoverLeaveEvent(event); <span class="keyword">if</span> (<span class="operator">!</span>popupShown <span class="operator">&</span><span class="operator">&</span> (timeLine<span class="operator">-</span><span class="operator">></span>direction() <span class="operator">!</span><span class="operator">=</span> <span class="type"><a href="qtimeline.html">QTimeLine</a></span><span class="operator">::</span>Backward <span class="operator">|</span><span class="operator">|</span> timeLine<span class="operator">-</span><span class="operator">></span>currentValue() <span class="operator">!</span><span class="operator">=</span> <span class="number">0</span>)) zoomOut(); } <span class="type">bool</span> CustomProxy<span class="operator">::</span>sceneEventFilter(<span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span> <span class="operator">*</span>watched<span class="operator">,</span> <span class="type"><a href="qevent.html">QEvent</a></span> <span class="operator">*</span>event) { <span class="keyword">if</span> (watched<span class="operator">-</span><span class="operator">></span>isWindow() <span class="operator">&</span><span class="operator">&</span> (event<span class="operator">-</span><span class="operator">></span>type() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qevent.html">QEvent</a></span><span class="operator">::</span>UngrabMouse <span class="operator">|</span><span class="operator">|</span> event<span class="operator">-</span><span class="operator">></span>type() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qevent.html">QEvent</a></span><span class="operator">::</span>GrabMouse)) { popupShown <span class="operator">=</span> watched<span class="operator">-</span><span class="operator">></span>isVisible(); <span class="keyword">if</span> (<span class="operator">!</span>popupShown <span class="operator">&</span><span class="operator">&</span> <span class="operator">!</span>isUnderMouse()) zoomOut(); } <span class="keyword">return</span> <span class="type"><a href="qgraphicsproxywidget.html">QGraphicsProxyWidget</a></span><span class="operator">::</span>sceneEventFilter(watched<span class="operator">,</span> event); } <span class="type"><a href="qvariant.html">QVariant</a></span> CustomProxy<span class="operator">::</span>itemChange(GraphicsItemChange change<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="qvariant.html">QVariant</a></span> <span class="operator">&</span>value) { <span class="keyword">if</span> (change <span class="operator">=</span><span class="operator">=</span> ItemChildAddedChange <span class="operator">|</span><span class="operator">|</span> change <span class="operator">=</span><span class="operator">=</span> ItemChildRemovedChange) { <span class="keyword">if</span> (change <span class="operator">=</span><span class="operator">=</span> ItemChildAddedChange) { currentPopup <span class="operator">=</span> qvariant_cast<span class="operator"><</span><span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span> <span class="operator">*</span><span class="operator">></span>(value); currentPopup<span class="operator">-</span><span class="operator">></span>setCacheMode(ItemCoordinateCache); <span class="keyword">if</span> (scene()) currentPopup<span class="operator">-</span><span class="operator">></span>installSceneEventFilter(<span class="keyword">this</span>); } <span class="keyword">else</span> <span class="keyword">if</span> (scene()) { currentPopup<span class="operator">-</span><span class="operator">></span>removeSceneEventFilter(<span class="keyword">this</span>); currentPopup <span class="operator">=</span> <span class="number">0</span>; } } <span class="keyword">else</span> <span class="keyword">if</span> (currentPopup <span class="operator">&</span><span class="operator">&</span> change <span class="operator">=</span><span class="operator">=</span> ItemSceneHasChanged) { currentPopup<span class="operator">-</span><span class="operator">></span>installSceneEventFilter(<span class="keyword">this</span>); } <span class="keyword">return</span> <span class="type"><a href="qgraphicsproxywidget.html">QGraphicsProxyWidget</a></span><span class="operator">::</span>itemChange(change<span class="operator">,</span> value); } <span class="type">void</span> CustomProxy<span class="operator">::</span>updateStep(<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> step) { <span class="type"><a href="qrectf.html">QRectF</a></span> r <span class="operator">=</span> boundingRect(); setTransform(<span class="type"><a href="qtransform.html">QTransform</a></span>() <span class="operator">.</span>translate(r<span class="operator">.</span>width() <span class="operator">/</span> <span class="number">2</span><span class="operator">,</span> r<span class="operator">.</span>height() <span class="operator">/</span> <span class="number">2</span>) <span class="operator">.</span>rotate(step <span class="operator">*</span> <span class="number">30</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>XAxis) <span class="operator">.</span>rotate(step <span class="operator">*</span> <span class="number">10</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>YAxis) <span class="operator">.</span>rotate(step <span class="operator">*</span> <span class="number">5</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>ZAxis) <span class="operator">.</span>scale(<span class="number">1</span> <span class="operator">+</span> <span class="number">1.5</span> <span class="operator">*</span> step<span class="operator">,</span> <span class="number">1</span> <span class="operator">+</span> <span class="number">1.5</span> <span class="operator">*</span> step) <span class="operator">.</span>translate(<span class="operator">-</span>r<span class="operator">.</span>width() <span class="operator">/</span> <span class="number">2</span><span class="operator">,</span> <span class="operator">-</span>r<span class="operator">.</span>height() <span class="operator">/</span> <span class="number">2</span>)); } <span class="type">void</span> CustomProxy<span class="operator">::</span>stateChanged(<span class="type"><a href="qtimeline.html">QTimeLine</a></span><span class="operator">::</span>State state) { <span class="keyword">if</span> (state <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qtimeline.html">QTimeLine</a></span><span class="operator">::</span>Running) { <span class="keyword">if</span> (timeLine<span class="operator">-</span><span class="operator">></span>direction() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qtimeline.html">QTimeLine</a></span><span class="operator">::</span>Forward) setCacheMode(ItemCoordinateCache); } <span class="keyword">else</span> <span class="keyword">if</span> (state <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qtimeline.html">QTimeLine</a></span><span class="operator">::</span>NotRunning) { <span class="keyword">if</span> (timeLine<span class="operator">-</span><span class="operator">></span>direction() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qtimeline.html">QTimeLine</a></span><span class="operator">::</span>Backward) setCacheMode(DeviceCoordinateCache); } } <span class="type">void</span> CustomProxy<span class="operator">::</span>zoomIn() { <span class="keyword">if</span> (timeLine<span class="operator">-</span><span class="operator">></span>direction() <span class="operator">!</span><span class="operator">=</span> <span class="type"><a href="qtimeline.html">QTimeLine</a></span><span class="operator">::</span>Forward) timeLine<span class="operator">-</span><span class="operator">></span>setDirection(<span class="type"><a href="qtimeline.html">QTimeLine</a></span><span class="operator">::</span>Forward); <span class="keyword">if</span> (timeLine<span class="operator">-</span><span class="operator">></span>state() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qtimeline.html">QTimeLine</a></span><span class="operator">::</span>NotRunning) timeLine<span class="operator">-</span><span class="operator">></span>start(); } <span class="type">void</span> CustomProxy<span class="operator">::</span>zoomOut() { <span class="keyword">if</span> (timeLine<span class="operator">-</span><span class="operator">></span>direction() <span class="operator">!</span><span class="operator">=</span> <span class="type"><a href="qtimeline.html">QTimeLine</a></span><span class="operator">::</span>Backward) timeLine<span class="operator">-</span><span class="operator">></span>setDirection(<span class="type"><a href="qtimeline.html">QTimeLine</a></span><span class="operator">::</span>Backward); <span class="keyword">if</span> (timeLine<span class="operator">-</span><span class="operator">></span>state() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qtimeline.html">QTimeLine</a></span><span class="operator">::</span>NotRunning) timeLine<span class="operator">-</span><span class="operator">></span>start(); }</pre> </div> <!-- @@@demos/embeddeddialogs/customproxy.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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