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<h1 class="title">sortingbox.cpp Example File</h1>
<span class="small-subtitle">widgets/tooltips/sortingbox.cpp</span>
<!-- $$$widgets/tooltips/sortingbox.cpp-description -->
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<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:
**
** &quot;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
** &quot;AS IS&quot; 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.&quot;
**
** $QT_END_LICENSE$
**
****************************************************************************/</span>
<span class="preprocessor">#include &lt;QtGui&gt;</span>
<span class="preprocessor">#include &lt;stdlib.h&gt;</span>
<span class="preprocessor">#include &quot;sortingbox.h&quot;</span>
SortingBox<span class="operator">::</span>SortingBox()
{
setMouseTracking(<span class="keyword">true</span>);
setBackgroundRole(<span class="type"><a href="qpalette.html">QPalette</a></span><span class="operator">::</span>Base);
itemInMotion <span class="operator">=</span> <span class="number">0</span>;
newCircleButton <span class="operator">=</span> createToolButton(tr(<span class="string">&quot;New Circle&quot;</span>)<span class="operator">,</span>
<span class="type"><a href="qicon.html">QIcon</a></span>(<span class="string">&quot;:/images/circle.png&quot;</span>)<span class="operator">,</span>
SLOT(createNewCircle()));
newSquareButton <span class="operator">=</span> createToolButton(tr(<span class="string">&quot;New Square&quot;</span>)<span class="operator">,</span>
<span class="type"><a href="qicon.html">QIcon</a></span>(<span class="string">&quot;:/images/square.png&quot;</span>)<span class="operator">,</span>
SLOT(createNewSquare()));
newTriangleButton <span class="operator">=</span> createToolButton(tr(<span class="string">&quot;New Triangle&quot;</span>)<span class="operator">,</span>
<span class="type"><a href="qicon.html">QIcon</a></span>(<span class="string">&quot;:/images/triangle.png&quot;</span>)<span class="operator">,</span>
SLOT(createNewTriangle()));
circlePath<span class="operator">.</span>addEllipse(<span class="type"><a href="qrect.html">QRect</a></span>(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">100</span><span class="operator">,</span> <span class="number">100</span>));
squarePath<span class="operator">.</span>addRect(<span class="type"><a href="qrect.html">QRect</a></span>(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">100</span><span class="operator">,</span> <span class="number">100</span>));
<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> x <span class="operator">=</span> trianglePath<span class="operator">.</span>currentPosition()<span class="operator">.</span>x();
<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> y <span class="operator">=</span> trianglePath<span class="operator">.</span>currentPosition()<span class="operator">.</span>y();
trianglePath<span class="operator">.</span>moveTo(x <span class="operator">+</span> <span class="number">120</span> <span class="operator">/</span> <span class="number">2</span><span class="operator">,</span> y);
trianglePath<span class="operator">.</span>lineTo(<span class="number">0</span><span class="operator">,</span> <span class="number">100</span>);
trianglePath<span class="operator">.</span>lineTo(<span class="number">120</span><span class="operator">,</span> <span class="number">100</span>);
trianglePath<span class="operator">.</span>lineTo(x <span class="operator">+</span> <span class="number">120</span> <span class="operator">/</span> <span class="number">2</span><span class="operator">,</span> y);
setWindowTitle(tr(<span class="string">&quot;Tool Tips&quot;</span>));
resize(<span class="number">500</span><span class="operator">,</span> <span class="number">300</span>);
createShapeItem(circlePath<span class="operator">,</span> tr(<span class="string">&quot;Circle&quot;</span>)<span class="operator">,</span> initialItemPosition(circlePath)<span class="operator">,</span>
initialItemColor());
createShapeItem(squarePath<span class="operator">,</span> tr(<span class="string">&quot;Square&quot;</span>)<span class="operator">,</span> initialItemPosition(squarePath)<span class="operator">,</span>
initialItemColor());
createShapeItem(trianglePath<span class="operator">,</span> tr(<span class="string">&quot;Triangle&quot;</span>)<span class="operator">,</span>
initialItemPosition(trianglePath)<span class="operator">,</span> initialItemColor());
}
<span class="type">bool</span> SortingBox<span class="operator">::</span>event(<span class="type"><a href="qevent.html">QEvent</a></span> <span class="operator">*</span>event)
{
<span class="keyword">if</span> (event<span class="operator">-</span><span class="operator">&gt;</span>type() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qevent.html">QEvent</a></span><span class="operator">::</span>ToolTip) {
<span class="type"><a href="qhelpevent.html">QHelpEvent</a></span> <span class="operator">*</span>helpEvent <span class="operator">=</span> <span class="keyword">static_cast</span><span class="operator">&lt;</span><span class="type"><a href="qhelpevent.html">QHelpEvent</a></span> <span class="operator">*</span><span class="operator">&gt;</span>(event);
<span class="type">int</span> index <span class="operator">=</span> itemAt(helpEvent<span class="operator">-</span><span class="operator">&gt;</span>pos());
<span class="keyword">if</span> (index <span class="operator">!</span><span class="operator">=</span> <span class="operator">-</span><span class="number">1</span>) {
<span class="type"><a href="qtooltip.html">QToolTip</a></span><span class="operator">::</span>showText(helpEvent<span class="operator">-</span><span class="operator">&gt;</span>globalPos()<span class="operator">,</span> shapeItems<span class="operator">[</span>index<span class="operator">]</span><span class="operator">.</span>toolTip());
} <span class="keyword">else</span> {
<span class="type"><a href="qtooltip.html">QToolTip</a></span><span class="operator">::</span>hideText();
event<span class="operator">-</span><span class="operator">&gt;</span>ignore();
}
<span class="keyword">return</span> <span class="keyword">true</span>;
}
<span class="keyword">return</span> <span class="type"><a href="qwidget.html">QWidget</a></span><span class="operator">::</span>event(event);
}
<span class="type">void</span> SortingBox<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="type">int</span> margin <span class="operator">=</span> style()<span class="operator">-</span><span class="operator">&gt;</span>pixelMetric(<span class="type"><a href="qstyle.html">QStyle</a></span><span class="operator">::</span>PM_DefaultTopLevelMargin);
<span class="type">int</span> x <span class="operator">=</span> width() <span class="operator">-</span> margin;
<span class="type">int</span> y <span class="operator">=</span> height() <span class="operator">-</span> margin;
y <span class="operator">=</span> updateButtonGeometry(newCircleButton<span class="operator">,</span> x<span class="operator">,</span> y);
y <span class="operator">=</span> updateButtonGeometry(newSquareButton<span class="operator">,</span> x<span class="operator">,</span> y);
updateButtonGeometry(newTriangleButton<span class="operator">,</span> x<span class="operator">,</span> y);
}
<span class="type">void</span> SortingBox<span class="operator">::</span>paintEvent(<span class="type"><a href="qpaintevent.html">QPaintEvent</a></span> <span class="operator">*</span> <span class="comment">/* event */</span>)
{
<span class="type"><a href="qpainter.html">QPainter</a></span> painter(<span class="keyword">this</span>);
painter<span class="operator">.</span>setRenderHint(<span class="type"><a href="qpainter.html">QPainter</a></span><span class="operator">::</span>Antialiasing);
foreach (ShapeItem shapeItem<span class="operator">,</span> shapeItems) {
painter<span class="operator">.</span>translate(shapeItem<span class="operator">.</span>position());
painter<span class="operator">.</span>setBrush(shapeItem<span class="operator">.</span>color());
painter<span class="operator">.</span>drawPath(shapeItem<span class="operator">.</span>path());
painter<span class="operator">.</span>translate(<span class="operator">-</span>shapeItem<span class="operator">.</span>position());
}
}
<span class="type">void</span> SortingBox<span class="operator">::</span>mousePressEvent(<span class="type"><a href="qmouseevent.html">QMouseEvent</a></span> <span class="operator">*</span>event)
{
<span class="keyword">if</span> (event<span class="operator">-</span><span class="operator">&gt;</span>button() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>LeftButton) {
<span class="type">int</span> index <span class="operator">=</span> itemAt(event<span class="operator">-</span><span class="operator">&gt;</span>pos());
<span class="keyword">if</span> (index <span class="operator">!</span><span class="operator">=</span> <span class="operator">-</span><span class="number">1</span>) {
itemInMotion <span class="operator">=</span> <span class="operator">&amp;</span>shapeItems<span class="operator">[</span>index<span class="operator">]</span>;
previousPosition <span class="operator">=</span> event<span class="operator">-</span><span class="operator">&gt;</span>pos();
shapeItems<span class="operator">.</span>move(index<span class="operator">,</span> shapeItems<span class="operator">.</span>size() <span class="operator">-</span> <span class="number">1</span>);
update();
}
}
}
<span class="type">void</span> SortingBox<span class="operator">::</span>mouseMoveEvent(<span class="type"><a href="qmouseevent.html">QMouseEvent</a></span> <span class="operator">*</span>event)
{
<span class="keyword">if</span> ((event<span class="operator">-</span><span class="operator">&gt;</span>buttons() <span class="operator">&amp;</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>LeftButton) <span class="operator">&amp;</span><span class="operator">&amp;</span> itemInMotion)
moveItemTo(event<span class="operator">-</span><span class="operator">&gt;</span>pos());
}
<span class="type">void</span> SortingBox<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> (event<span class="operator">-</span><span class="operator">&gt;</span>button() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>LeftButton <span class="operator">&amp;</span><span class="operator">&amp;</span> itemInMotion) {
moveItemTo(event<span class="operator">-</span><span class="operator">&gt;</span>pos());
itemInMotion <span class="operator">=</span> <span class="number">0</span>;
}
}
<span class="type">void</span> SortingBox<span class="operator">::</span>createNewCircle()
{
<span class="keyword">static</span> <span class="type">int</span> count <span class="operator">=</span> <span class="number">1</span>;
createShapeItem(circlePath<span class="operator">,</span> tr(<span class="string">&quot;Circle &lt;%1&gt;&quot;</span>)<span class="operator">.</span>arg(<span class="operator">+</span><span class="operator">+</span>count)<span class="operator">,</span>
randomItemPosition()<span class="operator">,</span> randomItemColor());
}
<span class="type">void</span> SortingBox<span class="operator">::</span>createNewSquare()
{
<span class="keyword">static</span> <span class="type">int</span> count <span class="operator">=</span> <span class="number">1</span>;
createShapeItem(squarePath<span class="operator">,</span> tr(<span class="string">&quot;Square &lt;%1&gt;&quot;</span>)<span class="operator">.</span>arg(<span class="operator">+</span><span class="operator">+</span>count)<span class="operator">,</span>
randomItemPosition()<span class="operator">,</span> randomItemColor());
}
<span class="type">void</span> SortingBox<span class="operator">::</span>createNewTriangle()
{
<span class="keyword">static</span> <span class="type">int</span> count <span class="operator">=</span> <span class="number">1</span>;
createShapeItem(trianglePath<span class="operator">,</span> tr(<span class="string">&quot;Triangle &lt;%1&gt;&quot;</span>)<span class="operator">.</span>arg(<span class="operator">+</span><span class="operator">+</span>count)<span class="operator">,</span>
randomItemPosition()<span class="operator">,</span> randomItemColor());
}
<span class="type">int</span> SortingBox<span class="operator">::</span>itemAt(<span class="keyword">const</span> <span class="type"><a href="qpoint.html">QPoint</a></span> <span class="operator">&amp;</span>pos)
{
<span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> shapeItems<span class="operator">.</span>size() <span class="operator">-</span> <span class="number">1</span>; i <span class="operator">&gt;</span><span class="operator">=</span> <span class="number">0</span>; <span class="operator">-</span><span class="operator">-</span>i) {
<span class="keyword">const</span> ShapeItem <span class="operator">&amp;</span>item <span class="operator">=</span> shapeItems<span class="operator">[</span>i<span class="operator">]</span>;
<span class="keyword">if</span> (item<span class="operator">.</span>path()<span class="operator">.</span>contains(pos <span class="operator">-</span> item<span class="operator">.</span>position()))
<span class="keyword">return</span> i;
}
<span class="keyword">return</span> <span class="operator">-</span><span class="number">1</span>;
}
<span class="type">void</span> SortingBox<span class="operator">::</span>moveItemTo(<span class="keyword">const</span> <span class="type"><a href="qpoint.html">QPoint</a></span> <span class="operator">&amp;</span>pos)
{
<span class="type"><a href="qpoint.html">QPoint</a></span> offset <span class="operator">=</span> pos <span class="operator">-</span> previousPosition;
itemInMotion<span class="operator">-</span><span class="operator">&gt;</span>setPosition(itemInMotion<span class="operator">-</span><span class="operator">&gt;</span>position() <span class="operator">+</span> offset);
previousPosition <span class="operator">=</span> pos;
update();
}
<span class="type">int</span> SortingBox<span class="operator">::</span>updateButtonGeometry(<span class="type"><a href="qtoolbutton.html">QToolButton</a></span> <span class="operator">*</span>button<span class="operator">,</span> <span class="type">int</span> x<span class="operator">,</span> <span class="type">int</span> y)
{
<span class="type"><a href="qsize.html">QSize</a></span> size <span class="operator">=</span> button<span class="operator">-</span><span class="operator">&gt;</span>sizeHint();
button<span class="operator">-</span><span class="operator">&gt;</span>setGeometry(x <span class="operator">-</span> size<span class="operator">.</span>rwidth()<span class="operator">,</span> y <span class="operator">-</span> size<span class="operator">.</span>rheight()<span class="operator">,</span>
size<span class="operator">.</span>rwidth()<span class="operator">,</span> size<span class="operator">.</span>rheight());
<span class="keyword">return</span> y <span class="operator">-</span> size<span class="operator">.</span>rheight()
<span class="operator">-</span> style()<span class="operator">-</span><span class="operator">&gt;</span>pixelMetric(<span class="type"><a href="qstyle.html">QStyle</a></span><span class="operator">::</span>PM_DefaultLayoutSpacing);
}
<span class="type">void</span> SortingBox<span class="operator">::</span>createShapeItem(<span class="keyword">const</span> <span class="type"><a href="qpainterpath.html">QPainterPath</a></span> <span class="operator">&amp;</span>path<span class="operator">,</span>
<span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&amp;</span>toolTip<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="qpoint.html">QPoint</a></span> <span class="operator">&amp;</span>pos<span class="operator">,</span>
<span class="keyword">const</span> <span class="type"><a href="qcolor.html">QColor</a></span> <span class="operator">&amp;</span>color)
{
ShapeItem shapeItem;
shapeItem<span class="operator">.</span>setPath(path);
shapeItem<span class="operator">.</span>setToolTip(toolTip);
shapeItem<span class="operator">.</span>setPosition(pos);
shapeItem<span class="operator">.</span>setColor(color);
shapeItems<span class="operator">.</span>append(shapeItem);
update();
}
<span class="type"><a href="qtoolbutton.html">QToolButton</a></span> <span class="operator">*</span>SortingBox<span class="operator">::</span>createToolButton(<span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&amp;</span>toolTip<span class="operator">,</span>
<span class="keyword">const</span> <span class="type"><a href="qicon.html">QIcon</a></span> <span class="operator">&amp;</span>icon<span class="operator">,</span> <span class="keyword">const</span> <span class="type">char</span> <span class="operator">*</span>member)
{
<span class="type"><a href="qtoolbutton.html">QToolButton</a></span> <span class="operator">*</span>button <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qtoolbutton.html">QToolButton</a></span>(<span class="keyword">this</span>);
button<span class="operator">-</span><span class="operator">&gt;</span>setToolTip(toolTip);
button<span class="operator">-</span><span class="operator">&gt;</span>setIcon(icon);
button<span class="operator">-</span><span class="operator">&gt;</span>setIconSize(<span class="type"><a href="qsize.html">QSize</a></span>(<span class="number">32</span><span class="operator">,</span> <span class="number">32</span>));
connect(button<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> member);
<span class="keyword">return</span> button;
}
<span class="type"><a href="qpoint.html">QPoint</a></span> SortingBox<span class="operator">::</span>initialItemPosition(<span class="keyword">const</span> <span class="type"><a href="qpainterpath.html">QPainterPath</a></span> <span class="operator">&amp;</span>path)
{
<span class="type">int</span> x;
<span class="type">int</span> y <span class="operator">=</span> (height() <span class="operator">-</span> (<span class="type">int</span>)path<span class="operator">.</span>controlPointRect()<span class="operator">.</span>height()) <span class="operator">/</span> <span class="number">2</span>;
<span class="keyword">if</span> (shapeItems<span class="operator">.</span>size() <span class="operator">=</span><span class="operator">=</span> <span class="number">0</span>)
x <span class="operator">=</span> ((<span class="number">3</span> <span class="operator">*</span> width()) <span class="operator">/</span> <span class="number">2</span> <span class="operator">-</span> (<span class="type">int</span>)path<span class="operator">.</span>controlPointRect()<span class="operator">.</span>width()) <span class="operator">/</span> <span class="number">2</span>;
<span class="keyword">else</span>
x <span class="operator">=</span> (width() <span class="operator">/</span> shapeItems<span class="operator">.</span>size()
<span class="operator">-</span> (<span class="type">int</span>)path<span class="operator">.</span>controlPointRect()<span class="operator">.</span>width()) <span class="operator">/</span> <span class="number">2</span>;
<span class="keyword">return</span> <span class="type"><a href="qpoint.html">QPoint</a></span>(x<span class="operator">,</span> y);
}
<span class="type"><a href="qpoint.html">QPoint</a></span> SortingBox<span class="operator">::</span>randomItemPosition()
{
<span class="keyword">return</span> <span class="type"><a href="qpoint.html">QPoint</a></span>(qrand() <span class="operator">%</span> (width() <span class="operator">-</span> <span class="number">120</span>)<span class="operator">,</span> qrand() <span class="operator">%</span> (height() <span class="operator">-</span> <span class="number">120</span>));
}
<span class="type"><a href="qcolor.html">QColor</a></span> SortingBox<span class="operator">::</span>initialItemColor()
{
<span class="keyword">return</span> <span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">::</span>fromHsv(((shapeItems<span class="operator">.</span>size() <span class="operator">+</span> <span class="number">1</span>) <span class="operator">*</span> <span class="number">85</span>) <span class="operator">%</span> <span class="number">256</span><span class="operator">,</span> <span class="number">255</span><span class="operator">,</span> <span class="number">190</span>);
}
<span class="type"><a href="qcolor.html">QColor</a></span> SortingBox<span class="operator">::</span>randomItemColor()
{
<span class="keyword">return</span> <span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">::</span>fromHsv(qrand() <span class="operator">%</span> <span class="number">256</span><span class="operator">,</span> <span class="number">255</span><span class="operator">,</span> <span class="number">190</span>);
}</pre>
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<!-- @@@widgets/tooltips/sortingbox.cpp -->
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