1fdfc2abfe
Change-Id: I02f2c620296fcd91d4967d58767ea33fc4e1e7dc Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
101 lines
3.3 KiB
C++
101 lines
3.3 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
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** the names of its contributors may be used to endorse or promote
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** products derived from this software without specific prior written
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** permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtWidgets>
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#include "wigglywidget.h"
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//! [0]
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WigglyWidget::WigglyWidget(QWidget *parent)
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: QWidget(parent)
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{
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setBackgroundRole(QPalette::Midlight);
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setAutoFillBackground(true);
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QFont newFont = font();
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newFont.setPointSize(newFont.pointSize() + 20);
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setFont(newFont);
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step = 0;
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timer.start(60, this);
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}
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//! [0]
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//! [1]
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void WigglyWidget::paintEvent(QPaintEvent * /* event */)
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//! [1] //! [2]
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{
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static const int sineTable[16] = {
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0, 38, 71, 92, 100, 92, 71, 38, 0, -38, -71, -92, -100, -92, -71, -38
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};
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QFontMetrics metrics(font());
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int x = (width() - metrics.width(text)) / 2;
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int y = (height() + metrics.ascent() - metrics.descent()) / 2;
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QColor color;
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//! [2]
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//! [3]
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QPainter painter(this);
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//! [3] //! [4]
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for (int i = 0; i < text.size(); ++i) {
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int index = (step + i) % 16;
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color.setHsv((15 - index) * 16, 255, 191);
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painter.setPen(color);
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painter.drawText(x, y - ((sineTable[index] * metrics.height()) / 400),
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QString(text[i]));
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x += metrics.width(text[i]);
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}
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}
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//! [4]
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//! [5]
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void WigglyWidget::timerEvent(QTimerEvent *event)
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//! [5] //! [6]
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{
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if (event->timerId() == timer.timerId()) {
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++step;
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update();
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} else {
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QWidget::timerEvent(event);
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}
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//! [6]
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}
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