141 lines
3.5 KiB
C++
141 lines
3.5 KiB
C++
/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2011 Morgan Leborgne
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "QProgressIndicator.h"
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#include <QPainter>
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QProgressIndicator::QProgressIndicator(QWidget* parent)
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: QWidget(parent),
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m_angle(0),
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m_timerId(-1),
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m_delay(40),
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m_displayedWhenStopped(false),
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m_color(Qt::black)
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{
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setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
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setFocusPolicy(Qt::NoFocus);
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}
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bool QProgressIndicator::isAnimated () const
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{
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return (m_timerId != -1);
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}
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void QProgressIndicator::setDisplayedWhenStopped(bool state)
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{
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m_displayedWhenStopped = state;
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update();
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}
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bool QProgressIndicator::isDisplayedWhenStopped() const
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{
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return m_displayedWhenStopped;
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}
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void QProgressIndicator::startAnimation()
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{
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m_angle = 0;
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if (m_timerId == -1)
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m_timerId = startTimer(m_delay);
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}
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void QProgressIndicator::stopAnimation()
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{
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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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update();
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}
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void QProgressIndicator::setAnimationDelay(int delay)
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{
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if (m_timerId != -1)
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killTimer(m_timerId);
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m_delay = delay;
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if (m_timerId != -1)
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m_timerId = startTimer(m_delay);
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}
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void QProgressIndicator::setColor(const QColor & color)
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{
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m_color = color;
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update();
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}
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QSize QProgressIndicator::sizeHint() const
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{
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return QSize(20,20);
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}
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int QProgressIndicator::heightForWidth(int w) const
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{
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return w;
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}
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void QProgressIndicator::timerEvent(QTimerEvent * /*event*/)
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{
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m_angle = (m_angle+30)%360;
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update();
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}
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void QProgressIndicator::paintEvent(QPaintEvent * /*event*/)
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{
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if (!m_displayedWhenStopped && !isAnimated())
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return;
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int width = qMin(this->width(), this->height());
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QPainter p(this);
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p.setRenderHint(QPainter::Antialiasing);
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int outerRadius = (width-1)*0.5;
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int innerRadius = (width-1)*0.5*0.38;
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int capsuleHeight = outerRadius - innerRadius;
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int capsuleWidth = (width > 32 ) ? capsuleHeight *.23 : capsuleHeight *.35;
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int capsuleRadius = capsuleWidth/2;
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for (int i=0; i<12; i++)
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{
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QColor color = m_color;
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color.setAlphaF(1.0f - (i/12.0f));
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p.setPen(Qt::NoPen);
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p.setBrush(color);
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p.save();
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p.translate(rect().center());
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p.rotate(m_angle - i*30.0f);
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p.drawRoundedRect(-capsuleWidth*0.5, -(innerRadius+capsuleHeight), capsuleWidth, capsuleHeight, capsuleRadius, capsuleRadius);
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p.restore();
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}
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}
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