Update 更新文档

cleaned_source_code/QMainwindow/QBreathingLight.cpp

@@ -0,0 +1,64 @@
+#include "QBreathingLight.h"
+#include <QPainter>
+#include <QColor>
+#include <algorithm>
+QBreathingLight::QBreathingLight(QWidget *parent)
+	: QWidget(parent)
+	, m_opacity(1.0f)
+	, m_isFlashing(false)
+	, m_flashColor(Qt::red)
+	, m_flashDuration(3000) 
+{
+	setFixedSize(40, 40);
+	connect(&m_animationTimer, &QTimer::timeout, this, &QBreathingLight::updateAnimation);
+}
+void QBreathingLight::setFlashDuration(int milliseconds)
+{
+	m_flashDuration = milliseconds;
+}
+void QBreathingLight::setFlashColor(const QColor &color)
+{
+	m_flashColor = color;
+}
+void QBreathingLight::triggerSignal()
+{
+	if (!m_isFlashing) {
+		m_isFlashing = true;
+		m_flashStartTime = QTime::currentTime();
+		m_animationTimer.start(30); 
+	}
+}
+void QBreathingLight::paintEvent(QPaintEvent *event)
+{
+	Q_UNUSED(event);
+	QPainter painter(this);
+	painter.setRenderHint(QPainter::Antialiasing);
+	painter.fillRect(rect(), QBrush(QColor(240, 240, 240)));
+	QPoint center = rect().center();
+	int radius = qMin(width(), height()) / 3;
+	QColor color;
+	if (m_isFlashing) {
+		color = m_flashColor;
+		color.setAlphaF(m_opacity);
+	}
+	else {
+		color = Qt::green; 
+	}
+	painter.setBrush(QBrush(color));
+	painter.setPen(Qt::NoPen);
+	painter.drawEllipse(center, radius, radius);
+}
+void QBreathingLight::updateAnimation()
+{
+	int elapsed = m_flashStartTime.msecsTo(QTime::currentTime());
+	if (elapsed >= m_flashDuration) {
+		m_isFlashing = false;
+		m_opacity = 1.0f;
+		m_animationTimer.stop();
+		update();
+		return;
+	}
+	float progress = static_cast<float>(elapsed) / m_flashDuration;
+	m_opacity = 0.5f * (1.0f + sin(progress * 2 * 3.14 * 5)); 
+	update(); 
+}