155 lines
4.1 KiB
C++
Executable File
155 lines
4.1 KiB
C++
Executable File
/**
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* @RDE_HEADER@
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* Class of Led Widget
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* $Id$
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* $HeadURL$
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* $Author$
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*/
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#include "lts_led_widget.h"
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#include <QPainter>
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#include <QPropertyAnimation>
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#include <QResizeEvent>
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namespace LtsWidgets
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{
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void LtsLedWidget::resizeEvent(QResizeEvent *event)
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{
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switch (m_aspectHint) {
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case AspectHint::NoHint:
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{
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// NOTE: the next 4 lines would overwrite set properties from ui files
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// setMinimumWidth(0);
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// setMaximumWidth(65000);
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// setMinimumHeight(0);
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// setMaximumHeight(65000);
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QWidget::resizeEvent(event);
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break;
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}
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case AspectHint::HeightIsWidth:
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setMinimumHeight(event->size().width());
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setMaximumHeight(event->size().width());
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setMinimumWidth(0);
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setMaximumWidth(65000);
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break;
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case AspectHint::WidthIsHeight:
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setMinimumHeight(0);
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setMaximumHeight(65000);
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setMinimumWidth(event->size().height());
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setMaximumWidth(event->size().height());
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break;
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}
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}
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/**
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* The following values were determined by trial and error:
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*/
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static constexpr double GRADIENT_KEY_LOWER = 0.3;
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static constexpr double GRADIENT_KEY_UPPER = 0.9;
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static constexpr int GRADIENT_VALUE_LOWER = 125;
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static constexpr int GRADIENT_VALUE_UPPER = 165;
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static constexpr double GRADIENT_CENTER_OFFSET = 5.0;
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static constexpr double GRADIENT_FOCALPOINT_OFFSET = 2.7;
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static constexpr double PERCENTAGE_OF_BORDER = 0.1;
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static constexpr int DARK_FACTOR = 200;
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LtsLedWidget::LtsLedWidget(QWidget *parent, const QColor &oncolor, const QColor &offcolor, bool useGradient, int animtime)
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: QWidget(parent)
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, m_status(true)
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, m_oncolor(oncolor)
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, m_offcolor(offcolor)
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, m_currentcolor(oncolor)
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, m_gradient(useGradient)
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, m_animTime(animtime)
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{
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setObjectName(QString::fromUtf8("LtsLedWidget"));
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}
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void LtsLedWidget::paintEvent(QPaintEvent *pe)
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{
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Q_UNUSED(pe);
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QPainter p;
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p.begin(this);
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p.setOpacity(QWidget::isEnabled() ? 1.00 : 0.5);
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int minSize = height() > width() ? width() : height();
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if (m_gradient)
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{
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QRadialGradient grad(QPointF(width(), height()) / GRADIENT_CENTER_OFFSET, // Center
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minSize, // Radius
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QPointF(width(), height()) / GRADIENT_FOCALPOINT_OFFSET); // FocalPoint
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grad.setColorAt(GRADIENT_KEY_LOWER, m_currentcolor.lighter(GRADIENT_VALUE_LOWER));
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grad.setColorAt(GRADIENT_KEY_UPPER, m_currentcolor.darker(GRADIENT_VALUE_UPPER));
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p.setBrush(grad);
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}
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else
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p.setBrush(QBrush(m_currentcolor, Qt::SolidPattern));
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p.setRenderHint(QPainter::Antialiasing);
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p.setPen(QPen(Qt::black, PERCENTAGE_OF_BORDER * minSize, Qt::SolidLine, Qt::SquareCap));
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p.drawEllipse(QPointF(width(), height()) / 2.0,
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width() / (2.0 * (1.00 + PERCENTAGE_OF_BORDER)),
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height() / (2.0 * (1.00 + PERCENTAGE_OF_BORDER)));
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p.end();
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}
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void LtsLedWidget::animate()
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{
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QPropertyAnimation *anim = new QPropertyAnimation(this, "currentcolor");
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anim->setDuration(m_animTime);
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anim->setEasingCurve(QEasingCurve::OutBack);
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anim->setStartValue(m_currentcolor);
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anim->setEndValue(m_status ? m_oncolor : m_offcolor == Qt::black ? m_oncolor.darker(DARK_FACTOR) : m_offcolor);
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anim->start(QPropertyAnimation::DeleteWhenStopped);
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}
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void LtsLedWidget::setStatus(bool status)
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{
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if (m_status == status)
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return;
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m_status = status;
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animate();
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}
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void LtsLedWidget::setUseGradient(bool useGradient)
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{
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if (m_gradient == useGradient)
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return;
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m_gradient = useGradient;
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repaint();
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}
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void LtsLedWidget::setColor(const QColor &oncolor, const QColor &offcolor)
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{
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setOnColor(oncolor);
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setOffColor(offcolor);
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}
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void LtsLedWidget::setOnColor(const QColor &oncolor)
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{
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if (m_oncolor == oncolor)
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return;
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m_oncolor = oncolor;
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if (m_status)
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animate();
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}
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void LtsLedWidget::setOffColor(const QColor &offcolor)
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{
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if (m_offcolor == offcolor)
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return;
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m_offcolor = offcolor;
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if (!m_status)
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animate();
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}
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void LtsLedWidget::setCurrentColor(const QColor ¤tcolor)
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{
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if (m_currentcolor == currentcolor)
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return;
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m_currentcolor = currentcolor;
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repaint();
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}
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} // namespace namespace LtsWidgets
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