64 lines
1.6 KiB
C++
64 lines
1.6 KiB
C++
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#include "QBreathingLight.h"
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#include <QPainter>
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#include <QColor>
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#include <algorithm>
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QBreathingLight::QBreathingLight(QWidget *parent)
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: QWidget(parent)
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, m_opacity(1.0f)
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, m_isFlashing(false)
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, m_flashColor(Qt::red)
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, m_flashDuration(3000)
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{
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setFixedSize(40, 40);
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connect(&m_animationTimer, &QTimer::timeout, this, &QBreathingLight::updateAnimation);
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}
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void QBreathingLight::setFlashDuration(int milliseconds)
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{
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m_flashDuration = milliseconds;
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}
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void QBreathingLight::setFlashColor(const QColor &color)
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{
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m_flashColor = color;
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}
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void QBreathingLight::triggerSignal()
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{
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if (!m_isFlashing) {
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m_isFlashing = true;
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m_flashStartTime = QTime::currentTime();
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m_animationTimer.start(30);
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}
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}
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void QBreathingLight::paintEvent(QPaintEvent *event)
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{
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Q_UNUSED(event);
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QPainter painter(this);
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painter.setRenderHint(QPainter::Antialiasing);
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painter.fillRect(rect(), QBrush(QColor(240, 240, 240)));
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QPoint center = rect().center();
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int radius = qMin(width(), height()) / 3;
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QColor color;
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if (m_isFlashing) {
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color = m_flashColor;
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color.setAlphaF(m_opacity);
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}
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else {
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color = Qt::green;
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}
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painter.setBrush(QBrush(color));
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painter.setPen(Qt::NoPen);
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painter.drawEllipse(center, radius, radius);
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}
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void QBreathingLight::updateAnimation()
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{
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int elapsed = m_flashStartTime.msecsTo(QTime::currentTime());
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if (elapsed >= m_flashDuration) {
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m_isFlashing = false;
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m_opacity = 1.0f;
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m_animationTimer.stop();
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update();
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return;
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}
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float progress = static_cast<float>(elapsed) / m_flashDuration;
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m_opacity = 0.5f * (1.0f + sin(progress * 2 * 3.14 * 5));
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update();
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}
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