Alessandro Bonazzi
8c43d5cf2f
Files correlati : cg0.exe cg0700a.msk cg0700b.msk cg3.exe cg4.exe Bug : Commento: Merge 1.0 libraries
143 lines
4.2 KiB
C++
143 lines
4.2 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the demonstration applications of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see http://www.qt.io/terms-conditions. For further
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** information use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "chasewidget.h"
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#include <QtCore/QPoint>
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#include <QtGui/QApplication>
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#include <QtGui/QHideEvent>
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#include <QtGui/QPainter>
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#include <QtGui/QPaintEvent>
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#include <QtGui/QShowEvent>
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ChaseWidget::ChaseWidget(QWidget *parent, QPixmap pixmap, bool pixmapEnabled)
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: QWidget(parent)
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, m_segment(0)
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, m_delay(100)
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, m_step(40)
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, m_timerId(-1)
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, m_animated(false)
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, m_pixmap(pixmap)
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, m_pixmapEnabled(pixmapEnabled)
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{
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}
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void ChaseWidget::setAnimated(bool value)
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{
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if (m_animated == value)
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return;
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m_animated = value;
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if (m_timerId != -1) {
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killTimer(m_timerId);
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m_timerId = -1;
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}
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if (m_animated) {
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m_segment = 0;
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m_timerId = startTimer(m_delay);
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}
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update();
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}
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void ChaseWidget::paintEvent(QPaintEvent *event)
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{
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Q_UNUSED(event);
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QPainter p(this);
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if (m_pixmapEnabled && !m_pixmap.isNull()) {
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p.drawPixmap(0, 0, m_pixmap);
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return;
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}
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const int extent = qMin(width() - 8, height() - 8);
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const int displ = extent / 4;
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const int ext = extent / 4 - 1;
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p.setRenderHint(QPainter::Antialiasing, true);
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if(m_animated)
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p.setPen(Qt::gray);
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else
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p.setPen(QPen(palette().dark().color()));
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p.translate(width() / 2, height() / 2); // center
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for (int segment = 0; segment < segmentCount(); ++segment) {
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p.rotate(QApplication::isRightToLeft() ? m_step : -m_step);
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if(m_animated)
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p.setBrush(colorForSegment(segment));
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else
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p.setBrush(palette().background());
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p.drawEllipse(QRect(displ, -ext / 2, ext, ext));
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}
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}
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QSize ChaseWidget::sizeHint() const
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{
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return QSize(32, 32);
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}
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void ChaseWidget::timerEvent(QTimerEvent *event)
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{
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if (event->timerId() == m_timerId) {
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++m_segment;
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update();
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}
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QWidget::timerEvent(event);
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}
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QColor ChaseWidget::colorForSegment(int seg) const
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{
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int index = ((seg + m_segment) % segmentCount());
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int comp = qMax(0, 255 - (index * (255 / segmentCount())));
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return QColor(comp, comp, comp, 255);
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}
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int ChaseWidget::segmentCount() const
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{
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return 360 / m_step;
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}
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void ChaseWidget::setPixmapEnabled(bool enable)
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{
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m_pixmapEnabled = enable;
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}
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