370 lines
28 KiB
HTML
370 lines
28 KiB
HTML
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<h1 class="title">customproxy.cpp Example File</h1>
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<span class="small-subtitle">demos/embeddeddialogs/customproxy.cpp</span>
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<!-- $$$demos/embeddeddialogs/customproxy.cpp-description -->
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<div class="descr"> <a name="details"></a>
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<pre class="cpp"> <span class="comment">/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the demonstration applications of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see http://www.qt.io/terms-conditions. For further
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** information use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/</span>
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<span class="preprocessor">#include "customproxy.h"</span>
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<span class="preprocessor">#include <QtGui></span>
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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)
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: <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>)
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{
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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>);
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connect(timeLine<span class="operator">,</span> SIGNAL(valueChanged(<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span>))<span class="operator">,</span>
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<span class="keyword">this</span><span class="operator">,</span> SLOT(updateStep(<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span>)));
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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>
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<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)));
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}
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<span class="type"><a href="qrectf.html">QRectF</a></span> CustomProxy<span class="operator">::</span>boundingRect() <span class="keyword">const</span>
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{
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<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>);
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}
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<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>
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<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>widget)
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{
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<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>);
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<span class="type"><a href="qrectf.html">QRectF</a></span> r <span class="operator">=</span> windowFrameRect();
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<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>);
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<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>);
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<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);
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<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);
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<span class="keyword">if</span> (intersectsRight <span class="operator">&</span><span class="operator">&</span> intersectsBottom) {
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<span class="type"><a href="qpainterpath.html">QPainterPath</a></span> path;
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path<span class="operator">.</span>addRect(right);
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path<span class="operator">.</span>addRect(bottom);
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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);
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painter<span class="operator">-</span><span class="operator">></span>setBrush(color);
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painter<span class="operator">-</span><span class="operator">></span>drawPath(path);
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} <span class="keyword">else</span> <span class="keyword">if</span> (intersectsBottom) {
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painter<span class="operator">-</span><span class="operator">></span>fillRect(bottom<span class="operator">,</span> color);
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} <span class="keyword">else</span> <span class="keyword">if</span> (intersectsRight) {
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painter<span class="operator">-</span><span class="operator">></span>fillRect(right<span class="operator">,</span> color);
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}
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<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);
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}
|
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<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)
|
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{
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|
<span class="type"><a href="qgraphicsproxywidget.html">QGraphicsProxyWidget</a></span><span class="operator">::</span>hoverEnterEvent(event);
|
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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>)
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zoomIn();
|
|
}
|
|
|
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<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>))
|
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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 -->
|
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<acronym title="Copyright">©</acronym> 2015 The Qt Company Ltd.
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Documentation contributions included herein are the copyrights of
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their respective owners.</p>
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<br />
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<p>
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The documentation provided herein is licensed under the terms of the
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<a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation
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License version 1.3</a> as published by the Free Software Foundation.</p>
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<p>
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Documentation sources may be obtained from <a href="http://www.qt-project.org">
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www.qt-project.org</a>.</p>
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Qt and respective logos are trademarks of The Qt Company Ltd
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