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<h1 class="title">tetrixboard.cpp Example File</h1>
<span class="small-subtitle">script/qstetrix/tetrixboard.cpp</span>
<!-- $$$script/qstetrix/tetrixboard.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 &quot;tetrixboard.h&quot;</span>
<span class="preprocessor">#include &lt;QtGui&gt;</span>
<a href="qmetatype.html#Q_DECLARE_METATYPE">Q_DECLARE_METATYPE</a>(<span class="type"><a href="qpainter.html">QPainter</a></span><span class="operator">*</span>)
TetrixBoard<span class="operator">::</span>TetrixBoard(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent)
: <span class="type"><a href="qframe.html">QFrame</a></span>(parent)
{
timer <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qtimer.html">QTimer</a></span>(<span class="keyword">this</span>);
<a href="qmetatype.html#qMetaTypeId">qMetaTypeId</a><span class="operator">&lt;</span><span class="type"><a href="qpainter.html">QPainter</a></span><span class="operator">*</span><span class="operator">&gt;</span>();
}
<span class="type">void</span> TetrixBoard<span class="operator">::</span>setNextPieceLabel(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>label)
{
nextPieceLbl <span class="operator">=</span> qobject_cast<span class="operator">&lt;</span><span class="type"><a href="qlabel.html">QLabel</a></span><span class="operator">*</span><span class="operator">&gt;</span>(label);
}
<span class="type"><a href="qlabel.html">QLabel</a></span> <span class="operator">*</span>TetrixBoard<span class="operator">::</span>nextPieceLabel() <span class="keyword">const</span>
{
<span class="keyword">return</span> nextPieceLbl;
}
<span class="type"><a href="qobject.html">QObject</a></span> <span class="operator">*</span>TetrixBoard<span class="operator">::</span>getTimer()
{
<span class="keyword">return</span> timer;
}
<span class="type"><a href="qsize.html">QSize</a></span> TetrixBoard<span class="operator">::</span>minimumSizeHint() <span class="keyword">const</span>
{
<span class="keyword">return</span> <span class="type"><a href="qsize.html">QSize</a></span>(BoardWidth <span class="operator">*</span> <span class="number">5</span> <span class="operator">+</span> frameWidth() <span class="operator">*</span> <span class="number">2</span><span class="operator">,</span>
BoardHeight <span class="operator">*</span> <span class="number">5</span> <span class="operator">+</span> frameWidth() <span class="operator">*</span> <span class="number">2</span>);
}
<span class="type">void</span> TetrixBoard<span class="operator">::</span>paintEvent(<span class="type"><a href="qpaintevent.html">QPaintEvent</a></span> <span class="operator">*</span>event)
{
<span class="type"><a href="qframe.html">QFrame</a></span><span class="operator">::</span>paintEvent(event);
<span class="type"><a href="qpainter.html">QPainter</a></span> painter(<span class="keyword">this</span>);
painter<span class="operator">.</span>drawImage(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> image);
}
<span class="type">void</span> TetrixBoard<span class="operator">::</span>keyPressEvent(<span class="type"><a href="qkeyevent.html">QKeyEvent</a></span> <span class="operator">*</span>event)
{
<span class="keyword">emit</span> keyPressed(event<span class="operator">-</span><span class="operator">&gt;</span>key());
}
<span class="type">void</span> TetrixBoard<span class="operator">::</span>showNextPiece(<span class="type">int</span> width<span class="operator">,</span> <span class="type">int</span> height)
{
<span class="keyword">if</span> (<span class="operator">!</span>nextPieceLabel())
<span class="keyword">return</span>;
<span class="type"><a href="qpixmap.html">QPixmap</a></span> pixmap(width <span class="operator">*</span> squareWidth()<span class="operator">,</span> height <span class="operator">*</span> squareHeight());
<span class="type"><a href="qpainter.html">QPainter</a></span> painter(<span class="operator">&amp;</span>pixmap);
painter<span class="operator">.</span>fillRect(pixmap<span class="operator">.</span>rect()<span class="operator">,</span> nextPieceLabel()<span class="operator">-</span><span class="operator">&gt;</span>palette()<span class="operator">.</span>background());
<span class="keyword">emit</span> paintNextPieceRequested(<span class="operator">&amp;</span>painter);
nextPieceLabel()<span class="operator">-</span><span class="operator">&gt;</span>setPixmap(pixmap);
}
<span class="type">void</span> TetrixBoard<span class="operator">::</span>drawPauseScreen(<span class="type"><a href="qpainter.html">QPainter</a></span> <span class="operator">*</span>painter)
{
painter<span class="operator">-</span><span class="operator">&gt;</span>drawText(contentsRect()<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>AlignCenter<span class="operator">,</span> tr(<span class="string">&quot;Pause&quot;</span>));
}
<span class="type">void</span> TetrixBoard<span class="operator">::</span>drawSquare(<span class="type"><a href="qpainter.html">QPainter</a></span> <span class="operator">*</span>painter<span class="operator">,</span> <span class="type">int</span> x<span class="operator">,</span> <span class="type">int</span> y<span class="operator">,</span> <span class="type">int</span> shape)
{
<span class="keyword">static</span> <span class="keyword">const</span> <span class="type"><a href="qcolor.html#QRgb-typedef">QRgb</a></span> colorTable<span class="operator">[</span><span class="number">8</span><span class="operator">]</span> <span class="operator">=</span> {
<span class="number">0x000000</span><span class="operator">,</span> <span class="number">0xCC6666</span><span class="operator">,</span> <span class="number">0x66CC66</span><span class="operator">,</span> <span class="number">0x6666CC</span><span class="operator">,</span>
<span class="number">0xCCCC66</span><span class="operator">,</span> <span class="number">0xCC66CC</span><span class="operator">,</span> <span class="number">0x66CCCC</span><span class="operator">,</span> <span class="number">0xDAAA00</span>
};
x <span class="operator">=</span> x<span class="operator">*</span>squareWidth();
y <span class="operator">=</span> y<span class="operator">*</span>squareHeight();
<span class="type"><a href="qcolor.html">QColor</a></span> color <span class="operator">=</span> colorTable<span class="operator">[</span>shape<span class="operator">]</span>;
painter<span class="operator">-</span><span class="operator">&gt;</span>fillRect(x <span class="operator">+</span> <span class="number">1</span><span class="operator">,</span> y <span class="operator">+</span> <span class="number">1</span><span class="operator">,</span> squareWidth() <span class="operator">-</span> <span class="number">2</span><span class="operator">,</span> squareHeight() <span class="operator">-</span> <span class="number">2</span><span class="operator">,</span>
color);
painter<span class="operator">-</span><span class="operator">&gt;</span>setPen(color<span class="operator">.</span>light());
painter<span class="operator">-</span><span class="operator">&gt;</span>drawLine(x<span class="operator">,</span> y <span class="operator">+</span> squareHeight() <span class="operator">-</span> <span class="number">1</span><span class="operator">,</span> x<span class="operator">,</span> y);
painter<span class="operator">-</span><span class="operator">&gt;</span>drawLine(x<span class="operator">,</span> y<span class="operator">,</span> x <span class="operator">+</span> squareWidth() <span class="operator">-</span> <span class="number">1</span><span class="operator">,</span> y);
painter<span class="operator">-</span><span class="operator">&gt;</span>setPen(color<span class="operator">.</span>dark());
painter<span class="operator">-</span><span class="operator">&gt;</span>drawLine(x <span class="operator">+</span> <span class="number">1</span><span class="operator">,</span> y <span class="operator">+</span> squareHeight() <span class="operator">-</span> <span class="number">1</span><span class="operator">,</span>
x <span class="operator">+</span> squareWidth() <span class="operator">-</span> <span class="number">1</span><span class="operator">,</span> y <span class="operator">+</span> squareHeight() <span class="operator">-</span> <span class="number">1</span>);
painter<span class="operator">-</span><span class="operator">&gt;</span>drawLine(x <span class="operator">+</span> squareWidth() <span class="operator">-</span> <span class="number">1</span><span class="operator">,</span> y <span class="operator">+</span> squareHeight() <span class="operator">-</span> <span class="number">1</span><span class="operator">,</span>
x <span class="operator">+</span> squareWidth() <span class="operator">-</span> <span class="number">1</span><span class="operator">,</span> y <span class="operator">+</span> <span class="number">1</span>);
}
<span class="type">void</span> TetrixBoard<span class="operator">::</span>update()
{
<span class="type"><a href="qrect.html">QRect</a></span> rect <span class="operator">=</span> contentsRect();
<span class="keyword">if</span> (image<span class="operator">.</span>size() <span class="operator">!</span><span class="operator">=</span> rect<span class="operator">.</span>size())
image <span class="operator">=</span> <span class="type"><a href="qimage.html">QImage</a></span>(rect<span class="operator">.</span>size()<span class="operator">,</span> <span class="type"><a href="qimage.html">QImage</a></span><span class="operator">::</span>Format_ARGB32_Premultiplied);
image<span class="operator">.</span>fill(<a href="qcolor.html#qRgba">qRgba</a>(<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">0</span>));
<span class="type"><a href="qpainter.html">QPainter</a></span> painter;
painter<span class="operator">.</span>begin(<span class="operator">&amp;</span>image);
<span class="type">int</span> boardTop <span class="operator">=</span> rect<span class="operator">.</span>bottom() <span class="operator">-</span> BoardHeight<span class="operator">*</span>squareHeight();
painter<span class="operator">.</span>translate(rect<span class="operator">.</span>left()<span class="operator">,</span> boardTop);
<span class="keyword">emit</span> paintRequested(<span class="operator">&amp;</span>painter);
<span class="type"><a href="qframe.html">QFrame</a></span><span class="operator">::</span>update();
}</pre>
</div>
<!-- @@@script/qstetrix/tetrixboard.cpp -->
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