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<h1 class="title">tabletcanvas.h Example File</h1>
<span class="subtitle">widgets/tablet/tabletcanvas.h</span>
<!-- $$$widgets/tablet/tabletcanvas.h-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp">
<span class="comment">/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** 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 https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "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
** "AS IS" 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."
**
** $QT_END_LICENSE$
**
****************************************************************************/</span>
<span class="preprocessor">#ifndef TABLETCANVAS_H</span>
<span class="preprocessor">#define TABLETCANVAS_H</span>
<span class="preprocessor">#include <QWidget></span>
<span class="preprocessor">#include <QPixmap></span>
<span class="preprocessor">#include <QPoint></span>
<span class="preprocessor">#include <QTabletEvent></span>
<span class="preprocessor">#include <QColor></span>
<span class="preprocessor">#include <QBrush></span>
<span class="preprocessor">#include <QPen></span>
<span class="preprocessor">#include <QPoint></span>
<span class="keyword">class</span> <span class="type"><a href="../qtgui/qpaintevent.html">QPaintEvent</a></span>;
<span class="keyword">class</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span>;
<span class="keyword">class</span> TabletCanvas : <span class="keyword">public</span> <span class="type"><a href="qwidget.html">QWidget</a></span>
{
Q_OBJECT
<span class="keyword">public</span>:
<span class="keyword">enum</span> Valuator { PressureValuator<span class="operator">,</span> TangentialPressureValuator<span class="operator">,</span>
TiltValuator<span class="operator">,</span> VTiltValuator<span class="operator">,</span> HTiltValuator<span class="operator">,</span> NoValuator };
Q_ENUM(Valuator)
TabletCanvas();
bool saveImage(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>file);
bool loadImage(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>file);
<span class="type">void</span> setAlphaChannelValuator(Valuator type)
{ m_alphaChannelValuator <span class="operator">=</span> type; }
<span class="type">void</span> setColorSaturationValuator(Valuator type)
{ m_colorSaturationValuator <span class="operator">=</span> type; }
<span class="type">void</span> setLineWidthType(Valuator type)
{ m_lineWidthValuator <span class="operator">=</span> type; }
<span class="type">void</span> setColor(<span class="keyword">const</span> <span class="type"><a href="../qtgui/qcolor.html">QColor</a></span> <span class="operator">&</span>c)
{ <span class="keyword">if</span> (c<span class="operator">.</span>isValid()) m_color <span class="operator">=</span> c; }
<span class="type"><a href="../qtgui/qcolor.html">QColor</a></span> color() <span class="keyword">const</span>
{ <span class="keyword">return</span> m_color; }
<span class="type">void</span> setTabletDevice(<span class="type"><a href="../qtgui/qtabletevent.html">QTabletEvent</a></span> <span class="operator">*</span>event)
{ updateCursor(event); }
<span class="type">int</span> maximum(<span class="type">int</span> a<span class="operator">,</span> <span class="type">int</span> b)
{ <span class="keyword">return</span> a <span class="operator">></span> b <span class="operator">?</span> a : b; }
<span class="keyword">protected</span>:
<span class="type">void</span> tabletEvent(<span class="type"><a href="../qtgui/qtabletevent.html">QTabletEvent</a></span> <span class="operator">*</span>event) override;
<span class="type">void</span> paintEvent(<span class="type"><a href="../qtgui/qpaintevent.html">QPaintEvent</a></span> <span class="operator">*</span>event) override;
<span class="type">void</span> resizeEvent(<span class="type"><a href="../qtgui/qresizeevent.html">QResizeEvent</a></span> <span class="operator">*</span>event) override;
<span class="keyword">private</span>:
<span class="type">void</span> initPixmap();
<span class="type">void</span> paintPixmap(<span class="type"><a href="../qtgui/qpainter.html">QPainter</a></span> <span class="operator">&</span>painter<span class="operator">,</span> <span class="type"><a href="../qtgui/qtabletevent.html">QTabletEvent</a></span> <span class="operator">*</span>event);
<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>BrushStyle brushPattern(<span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> value);
<span class="type">void</span> updateBrush(<span class="keyword">const</span> <span class="type"><a href="../qtgui/qtabletevent.html">QTabletEvent</a></span> <span class="operator">*</span>event);
<span class="type">void</span> updateCursor(<span class="keyword">const</span> <span class="type"><a href="../qtgui/qtabletevent.html">QTabletEvent</a></span> <span class="operator">*</span>event);
Valuator m_alphaChannelValuator;
Valuator m_colorSaturationValuator;
Valuator m_lineWidthValuator;
<span class="type"><a href="../qtgui/qcolor.html">QColor</a></span> m_color;
<span class="type"><a href="../qtgui/qpixmap.html">QPixmap</a></span> m_pixmap;
<span class="type"><a href="../qtgui/qbrush.html">QBrush</a></span> m_brush;
<span class="type"><a href="../qtgui/qpen.html">QPen</a></span> m_pen;
bool m_deviceDown;
<span class="keyword">struct</span> Point {
<span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span> pos;
<span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> rotation;
} lastPoint;
};
<span class="preprocessor">#endif</span>
</pre>
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<!-- @@@widgets/tablet/tabletcanvas.h -->
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Documentation contributions included herein are the copyrights of
their respective owners.<br> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property
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Mageia
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armv5tl
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media
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4581
