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<h1 class="title">chip.cpp Example File</h1>
<span class="small-subtitle">demos/chip/chip.cpp</span>
<!-- $$$demos/chip/chip.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 "chip.h"</span>
<span class="preprocessor">#include <QtGui></span>
Chip<span class="operator">::</span>Chip(<span class="keyword">const</span> <span class="type"><a href="qcolor.html">QColor</a></span> <span class="operator">&</span>color<span class="operator">,</span> <span class="type">int</span> x<span class="operator">,</span> <span class="type">int</span> y)
{
<span class="keyword">this</span><span class="operator">-</span><span class="operator">></span>x <span class="operator">=</span> x;
<span class="keyword">this</span><span class="operator">-</span><span class="operator">></span>y <span class="operator">=</span> y;
<span class="keyword">this</span><span class="operator">-</span><span class="operator">></span>color <span class="operator">=</span> color;
setZValue((x <span class="operator">+</span> y) <span class="operator">%</span> <span class="number">2</span>);
setFlags(ItemIsSelectable <span class="operator">|</span> ItemIsMovable);
setAcceptsHoverEvents(<span class="keyword">true</span>);
}
<span class="type"><a href="qrectf.html">QRectF</a></span> Chip<span class="operator">::</span>boundingRect() <span class="keyword">const</span>
{
<span class="keyword">return</span> <span class="type"><a href="qrectf.html">QRectF</a></span>(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">110</span><span class="operator">,</span> <span class="number">70</span>);
}
<span class="type"><a href="qpainterpath.html">QPainterPath</a></span> Chip<span class="operator">::</span>shape() <span class="keyword">const</span>
{
<span class="type"><a href="qpainterpath.html">QPainterPath</a></span> path;
path<span class="operator">.</span>addRect(<span class="number">14</span><span class="operator">,</span> <span class="number">14</span><span class="operator">,</span> <span class="number">82</span><span class="operator">,</span> <span class="number">42</span>);
<span class="keyword">return</span> path;
}
<span class="type">void</span> Chip<span class="operator">::</span>paint(<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)
{
Q_UNUSED(widget);
<span class="type"><a href="qcolor.html">QColor</a></span> fillColor <span class="operator">=</span> (option<span class="operator">-</span><span class="operator">></span>state <span class="operator">&</span> <span class="type"><a href="qstyle.html">QStyle</a></span><span class="operator">::</span>State_Selected) <span class="operator">?</span> color<span class="operator">.</span>dark(<span class="number">150</span>) : color;
<span class="keyword">if</span> (option<span class="operator">-</span><span class="operator">></span>state <span class="operator">&</span> <span class="type"><a href="qstyle.html">QStyle</a></span><span class="operator">::</span>State_MouseOver)
fillColor <span class="operator">=</span> fillColor<span class="operator">.</span>light(<span class="number">125</span>);
<span class="keyword">const</span> <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> lod <span class="operator">=</span> option<span class="operator">-</span><span class="operator">></span>levelOfDetailFromTransform(painter<span class="operator">-</span><span class="operator">></span>worldTransform());
<span class="keyword">if</span> (lod <span class="operator"><</span> <span class="number">0.2</span>) {
<span class="keyword">if</span> (lod <span class="operator"><</span> <span class="number">0.125</span>) {
painter<span class="operator">-</span><span class="operator">></span>fillRect(<span class="type"><a href="qrectf.html">QRectF</a></span>(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">110</span><span class="operator">,</span> <span class="number">70</span>)<span class="operator">,</span> fillColor);
<span class="keyword">return</span>;
}
<span class="type"><a href="qbrush.html">QBrush</a></span> b <span class="operator">=</span> painter<span class="operator">-</span><span class="operator">></span>brush();
painter<span class="operator">-</span><span class="operator">></span>setBrush(fillColor);
painter<span class="operator">-</span><span class="operator">></span>drawRect(<span class="number">13</span><span class="operator">,</span> <span class="number">13</span><span class="operator">,</span> <span class="number">97</span><span class="operator">,</span> <span class="number">57</span>);
painter<span class="operator">-</span><span class="operator">></span>setBrush(b);
<span class="keyword">return</span>;
}
<span class="type"><a href="qpen.html">QPen</a></span> oldPen <span class="operator">=</span> painter<span class="operator">-</span><span class="operator">></span>pen();
<span class="type"><a href="qpen.html">QPen</a></span> pen <span class="operator">=</span> oldPen;
<span class="type">int</span> width <span class="operator">=</span> <span class="number">0</span>;
<span class="keyword">if</span> (option<span class="operator">-</span><span class="operator">></span>state <span class="operator">&</span> <span class="type"><a href="qstyle.html">QStyle</a></span><span class="operator">::</span>State_Selected)
width <span class="operator">+</span><span class="operator">=</span> <span class="number">2</span>;
pen<span class="operator">.</span>setWidth(width);
<span class="type"><a href="qbrush.html">QBrush</a></span> b <span class="operator">=</span> painter<span class="operator">-</span><span class="operator">></span>brush();
painter<span class="operator">-</span><span class="operator">></span>setBrush(<span class="type"><a href="qbrush.html">QBrush</a></span>(fillColor<span class="operator">.</span>dark(option<span class="operator">-</span><span class="operator">></span>state <span class="operator">&</span> <span class="type"><a href="qstyle.html">QStyle</a></span><span class="operator">::</span>State_Sunken <span class="operator">?</span> <span class="number">120</span> : <span class="number">100</span>)));
painter<span class="operator">-</span><span class="operator">></span>drawRect(<span class="type"><a href="qrect.html">QRect</a></span>(<span class="number">14</span><span class="operator">,</span> <span class="number">14</span><span class="operator">,</span> <span class="number">79</span><span class="operator">,</span> <span class="number">39</span>));
painter<span class="operator">-</span><span class="operator">></span>setBrush(b);
<span class="keyword">if</span> (lod <span class="operator">></span><span class="operator">=</span> <span class="number">1</span>) {
painter<span class="operator">-</span><span class="operator">></span>setPen(<span class="type"><a href="qpen.html">QPen</a></span>(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>gray<span class="operator">,</span> <span class="number">1</span>));
painter<span class="operator">-</span><span class="operator">></span>drawLine(<span class="number">15</span><span class="operator">,</span> <span class="number">54</span><span class="operator">,</span> <span class="number">94</span><span class="operator">,</span> <span class="number">54</span>);
painter<span class="operator">-</span><span class="operator">></span>drawLine(<span class="number">94</span><span class="operator">,</span> <span class="number">53</span><span class="operator">,</span> <span class="number">94</span><span class="operator">,</span> <span class="number">15</span>);
painter<span class="operator">-</span><span class="operator">></span>setPen(<span class="type"><a href="qpen.html">QPen</a></span>(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>black<span class="operator">,</span> <span class="number">0</span>));
}
<span class="comment">// Draw text</span>
<span class="keyword">if</span> (lod <span class="operator">></span><span class="operator">=</span> <span class="number">2</span>) {
<span class="type"><a href="qfont.html">QFont</a></span> font(<span class="string">"Times"</span><span class="operator">,</span> <span class="number">10</span>);
font<span class="operator">.</span>setStyleStrategy(<span class="type"><a href="qfont.html">QFont</a></span><span class="operator">::</span>ForceOutline);
painter<span class="operator">-</span><span class="operator">></span>setFont(font);
painter<span class="operator">-</span><span class="operator">></span>save();
painter<span class="operator">-</span><span class="operator">></span>scale(<span class="number">0.1</span><span class="operator">,</span> <span class="number">0.1</span>);
painter<span class="operator">-</span><span class="operator">></span>drawText(<span class="number">170</span><span class="operator">,</span> <span class="number">180</span><span class="operator">,</span> <span class="type"><a href="qstring.html">QString</a></span>(<span class="string">"Model: VSC-2000 (Very Small Chip) at %1x%2"</span>)<span class="operator">.</span>arg(x)<span class="operator">.</span>arg(y));
painter<span class="operator">-</span><span class="operator">></span>drawText(<span class="number">170</span><span class="operator">,</span> <span class="number">200</span><span class="operator">,</span> <span class="type"><a href="qstring.html">QString</a></span>(<span class="string">"Serial number: DLWR-WEER-123L-ZZ33-SDSJ"</span>));
painter<span class="operator">-</span><span class="operator">></span>drawText(<span class="number">170</span><span class="operator">,</span> <span class="number">220</span><span class="operator">,</span> <span class="type"><a href="qstring.html">QString</a></span>(<span class="string">"Manufacturer: Chip Manufacturer"</span>));
painter<span class="operator">-</span><span class="operator">></span>restore();
}
<span class="comment">// Draw lines</span>
<span class="type"><a href="qvarlengtharray.html">QVarLengthArray</a></span><span class="operator"><</span><span class="type"><a href="qlinef.html">QLineF</a></span><span class="operator">,</span> <span class="number">36</span><span class="operator">></span> lines;
<span class="keyword">if</span> (lod <span class="operator">></span><span class="operator">=</span> <span class="number">0.5</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><span class="operator">=</span> <span class="number">10</span>; i <span class="operator">+</span><span class="operator">=</span> (lod <span class="operator">></span> <span class="number">0.5</span> <span class="operator">?</span> <span class="number">1</span> : <span class="number">2</span>)) {
lines<span class="operator">.</span>append(<span class="type"><a href="qlinef.html">QLineF</a></span>(<span class="number">18</span> <span class="operator">+</span> <span class="number">7</span> <span class="operator">*</span> i<span class="operator">,</span> <span class="number">13</span><span class="operator">,</span> <span class="number">18</span> <span class="operator">+</span> <span class="number">7</span> <span class="operator">*</span> i<span class="operator">,</span> <span class="number">5</span>));
lines<span class="operator">.</span>append(<span class="type"><a href="qlinef.html">QLineF</a></span>(<span class="number">18</span> <span class="operator">+</span> <span class="number">7</span> <span class="operator">*</span> i<span class="operator">,</span> <span class="number">54</span><span class="operator">,</span> <span class="number">18</span> <span class="operator">+</span> <span class="number">7</span> <span class="operator">*</span> i<span class="operator">,</span> <span class="number">62</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><span class="operator">=</span> <span class="number">6</span>; i <span class="operator">+</span><span class="operator">=</span> (lod <span class="operator">></span> <span class="number">0.5</span> <span class="operator">?</span> <span class="number">1</span> : <span class="number">2</span>)) {
lines<span class="operator">.</span>append(<span class="type"><a href="qlinef.html">QLineF</a></span>(<span class="number">5</span><span class="operator">,</span> <span class="number">18</span> <span class="operator">+</span> i <span class="operator">*</span> <span class="number">5</span><span class="operator">,</span> <span class="number">13</span><span class="operator">,</span> <span class="number">18</span> <span class="operator">+</span> i <span class="operator">*</span> <span class="number">5</span>));
lines<span class="operator">.</span>append(<span class="type"><a href="qlinef.html">QLineF</a></span>(<span class="number">94</span><span class="operator">,</span> <span class="number">18</span> <span class="operator">+</span> i <span class="operator">*</span> <span class="number">5</span><span class="operator">,</span> <span class="number">102</span><span class="operator">,</span> <span class="number">18</span> <span class="operator">+</span> i <span class="operator">*</span> <span class="number">5</span>));
}
}
<span class="keyword">if</span> (lod <span class="operator">></span><span class="operator">=</span> <span class="number">0.4</span>) {
<span class="keyword">const</span> <span class="type"><a href="qlinef.html">QLineF</a></span> lineData<span class="operator">[</span><span class="operator">]</span> <span class="operator">=</span> {
<span class="type"><a href="qlinef.html">QLineF</a></span>(<span class="number">25</span><span class="operator">,</span> <span class="number">35</span><span class="operator">,</span> <span class="number">35</span><span class="operator">,</span> <span class="number">35</span>)<span class="operator">,</span>
<span class="type"><a href="qlinef.html">QLineF</a></span>(<span class="number">35</span><span class="operator">,</span> <span class="number">30</span><span class="operator">,</span> <span class="number">35</span><span class="operator">,</span> <span class="number">40</span>)<span class="operator">,</span>
<span class="type"><a href="qlinef.html">QLineF</a></span>(<span class="number">35</span><span class="operator">,</span> <span class="number">30</span><span class="operator">,</span> <span class="number">45</span><span class="operator">,</span> <span class="number">35</span>)<span class="operator">,</span>
<span class="type"><a href="qlinef.html">QLineF</a></span>(<span class="number">35</span><span class="operator">,</span> <span class="number">40</span><span class="operator">,</span> <span class="number">45</span><span class="operator">,</span> <span class="number">35</span>)<span class="operator">,</span>
<span class="type"><a href="qlinef.html">QLineF</a></span>(<span class="number">45</span><span class="operator">,</span> <span class="number">30</span><span class="operator">,</span> <span class="number">45</span><span class="operator">,</span> <span class="number">40</span>)<span class="operator">,</span>
<span class="type"><a href="qlinef.html">QLineF</a></span>(<span class="number">45</span><span class="operator">,</span> <span class="number">35</span><span class="operator">,</span> <span class="number">55</span><span class="operator">,</span> <span class="number">35</span>)
};
lines<span class="operator">.</span>append(lineData<span class="operator">,</span> <span class="number">6</span>);
}
painter<span class="operator">-</span><span class="operator">></span>drawLines(lines<span class="operator">.</span>data()<span class="operator">,</span> lines<span class="operator">.</span>size());
<span class="comment">// Draw red ink</span>
<span class="keyword">if</span> (stuff<span class="operator">.</span>size() <span class="operator">></span> <span class="number">1</span>) {
<span class="type"><a href="qpen.html">QPen</a></span> p <span class="operator">=</span> painter<span class="operator">-</span><span class="operator">></span>pen();
painter<span class="operator">-</span><span class="operator">></span>setPen(<span class="type"><a href="qpen.html">QPen</a></span>(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>red<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>SolidLine<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>RoundCap<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>RoundJoin));
painter<span class="operator">-</span><span class="operator">></span>setBrush(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>NoBrush);
<span class="type"><a href="qpainterpath.html">QPainterPath</a></span> path;
path<span class="operator">.</span>moveTo(stuff<span class="operator">.</span>first());
<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> stuff<span class="operator">.</span>size(); <span class="operator">+</span><span class="operator">+</span>i)
path<span class="operator">.</span>lineTo(stuff<span class="operator">.</span>at(i));
painter<span class="operator">-</span><span class="operator">></span>drawPath(path);
painter<span class="operator">-</span><span class="operator">></span>setPen(p);
}
}
<span class="type">void</span> Chip<span class="operator">::</span>mousePressEvent(<span class="type"><a href="qgraphicsscenemouseevent.html">QGraphicsSceneMouseEvent</a></span> <span class="operator">*</span>event)
{
<span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span><span class="operator">::</span>mousePressEvent(event);
update();
}
<span class="type">void</span> Chip<span class="operator">::</span>mouseMoveEvent(<span class="type"><a href="qgraphicsscenemouseevent.html">QGraphicsSceneMouseEvent</a></span> <span class="operator">*</span>event)
{
<span class="keyword">if</span> (event<span class="operator">-</span><span class="operator">></span>modifiers() <span class="operator">&</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>ShiftModifier) {
stuff <span class="operator"><</span><span class="operator"><</span> event<span class="operator">-</span><span class="operator">></span>pos();
update();
<span class="keyword">return</span>;
}
<span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span><span class="operator">::</span>mouseMoveEvent(event);
}
<span class="type">void</span> Chip<span class="operator">::</span>mouseReleaseEvent(<span class="type"><a href="qgraphicsscenemouseevent.html">QGraphicsSceneMouseEvent</a></span> <span class="operator">*</span>event)
{
<span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span><span class="operator">::</span>mouseReleaseEvent(event);
update();
}</pre>
</div>
<!-- @@@demos/chip/chip.cpp -->
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