Qt自定义battery控件代码

#include "hbattery.h" hBattery::hBattery(QWidget *parent) : QWidget(parent) { m_CurrentValue = 20; m_Margin = 1; m_BatteryMAXValue = 100; m_BatteryMinValue = 0; m_BatteryWidth = 50; m_BatteryHeight = 25; m_IsRecharge = false; m_BorderPen = QPen(Qt::gray, 2); m_TextPen = QPen(Qt::white); m_LightingPen = QPen(Qt::yellow, 2); m_TextFont = QFont("Arial", 11); p_RechargeTimer = new QTimer; connect(p_RechargeTimer, &QTimer::timeout, this, &hBattery::fRechargeRun); } /** ******************************************************************* * @Function : paintEvent * @Parameter : QPaintEvent * @Return : 无 * @Author : hx * @Description : 重写绘制事件 * @Date : 2024-10-25 14:24:44 ******************************************************************* **/ void hBattery::paintEvent(QPaintEvent * event) { Q_UNUSED(event); //绘制准备工作,启用反锯齿 QPainter painter(this); painter.setRenderHints(QPainter::Antialiasing | QPainter::TextAntialiasing); //1.绘制边框和头部 fDrawBorder(&painter); //2.绘制填充 fDrawBackground(&painter); //3.内部百分比 fDrawText(&painter); //4.是否充电 if(m_IsRecharge) fDrawLightning(&painter); } /** ******************************************************************* * @Function : fDrawBorder * @Parameter : QPainter 画笔 * @Return : 无 * @Author : hx * @Description : 绘制电池边宽 * @Date : 2024-10-25 14:24:44 ******************************************************************* **/ void hBattery::fDrawBorder(QPainter *painter) { //保存状态 painter->save(); //设置笔的颜色和粗细 painter->setPen(m_BorderPen); //没有画刷填充 painter->setBrush(Qt::NoBrush); //绘制给定的圆角矩形 矩形 xRadius yRadius //painter->drawRoundedRect(batteryRect, borderRadius, borderRadius); //电池边框居中 m_BatteryRect = QRectF((width() - m_BatteryWidth)/2, (height() - m_BatteryHeight)/2, m_BatteryWidth, m_BatteryHeight); painter->drawRoundedRect(m_BatteryRect, 3, 3); //电池头部：画一条直线 painter->setPen(QPen(Qt::gray, 5)); QLineF line(m_BatteryRect.topRight().x() + 3, m_BatteryRect.topRight().y() + 8, m_BatteryRect.topRight().x() + 3, m_BatteryRect.bottomRight().y() - 8); painter->drawLine(line); //恢复状态 painter->restore(); } /** ******************************************************************* * @Function : fDrawBackground * @Parameter : QPainter 画笔 * @Return : 无 * @Author : hx * @Description : 绘制电池电量背景 * @Date : 2024-10-25 14:24:44 ******************************************************************* **/ void hBattery::fDrawBackground(QPainter *painter) { int tempBattery; if(!m_IsRecharge) tempBattery = m_CurrentValue; else tempBattery = m_RechargeValue; //保存状态 painter->save(); //确定画刷颜色 if(tempBattery <= 10) //红 painter->setBrush(QColor(204, 38, 38)); else if (tempBattery <= 30) //黄 painter->setBrush(QColor(198, 163, 0)); else //绿 painter->setBrush(QColor(50, 205, 51)); //当前电量转化为宽 double width = tempBattery * (m_BatteryRect.width() - (m_Margin * 2)) / 100; //确定左上角位置 QPointF topLeft(m_BatteryRect.topLeft().x() + m_Margin, m_BatteryRect.topLeft().y() + m_Margin); //确定变化的右下角, 最小给个10, 显示内部的填充 QPointF bottomRight(m_BatteryRect.topLeft().x() + width + m_Margin, m_BatteryRect.bottomRight().y() - m_Margin); QRectF rect(topLeft, bottomRight); //没有线宽 painter->setPen(Qt::NoPen); painter->drawRoundedRect(rect, 5, 5); //恢复状态 painter->restore(); } /** ******************************************************************* * @Function : fDrawText * @Parameter : QPainter 画笔描述 * @Return : 无 * @Author : hx * @Description : 绘制文字 * @Date : 2024-10-25 14:24:44 ******************************************************************* **/ void hBattery::fDrawText(QPainter *painter) { //保存状态 painter->save(); painter->setPen(m_TextPen); painter->setFont(m_TextFont); QString value; if(!m_IsRecharge) value = QString::number(m_CurrentValue) + "%"; else value = QString::number(m_RechargeValue) + "%"; //文本居中的好方法 if(m_IsRecharge) painter->drawText(m_BatteryRect, Qt::AlignLeft | Qt::AlignVCenter, value); else painter->drawText(m_BatteryRect, Qt::AlignHCenter | Qt::AlignVCenter, value); //恢复状态 painter->restore(); } /** ******************************************************************* * @Function : fDrawLightning * @Parameter : QPainter 画笔 * @Return : 无 * @Author : hx * @Description : 绘制充电符号 * @Date : 2024-10-25 14:24:44 ******************************************************************* **/ void hBattery::fDrawLightning(QPainter *painter) { // 保存状态 painter->save(); // 设置闪电的颜色5 painter->setPen(m_LightingPen); // 更细的线条 // 计算文本的中心位置 QPointF textCenter = m_BatteryRect.center(); // 计算闪电的起始点（在文本右侧） QPointF startPoint(textCenter.x() + 15, textCenter.y() - 8); // 向右偏移 // 绘制闪电，只拐两下 QPolygon lightning; lightning << QPoint(startPoint.x(), startPoint.y()) //起点 << QPoint(startPoint.x() - 5, startPoint.y() + 8) // 向左下 << QPoint(startPoint.x() + 5, startPoint.y() + 8) // 向右下 << QPoint(startPoint.x() - 5, startPoint.y() + 16) // 向左下 << QPoint(startPoint.x(), startPoint.y() + 8); // 终点 painter->drawPolygon(lightning); // 恢复状态 painter->restore(); } /** ******************************************************************* * @Function : fSetBatteryValue * @Parameter : batteryValue 电量 * @Return : 无 * @Author : hx * @Description : 设置当前电池电量 * @Date : 2024-10-25 16:58:17 ******************************************************************* **/ void hBattery::fSetBatteryValue(int batteryValue) { m_CurrentValue = batteryValue; this->update(); } /** ******************************************************************* * @Function : fSetBatteryStatus * @Parameter : isRecharge 是否充电 * @Return : 无 * @Author : hx态 * @Description : 设置电池充放电状态 * @Date : 2024-10-25 16:59:25 ******************************************************************* **/ void hBattery::fSetBatteryStatus(bool isRecharge) { m_IsRecharge = isRecharge; m_RechargeValue = m_CurrentValue; if(m_IsRecharge) p_RechargeTimer->start(100); else { p_RechargeTimer->stop(); this->update(); } } /** ******************************************************************* * @Function : fSetColorstyle * @Parameter : borderPen 边框样式 * textPen 文字样式 * lightingPen 充电符号样式 * @Return : 无 * @Author : hx * @Description : 设置电池样式 * @Date : 2024-10-25 17:00:26 ******************************************************************* **/ void hBattery::fSetColorstyle(const QPen &borderPen, const QPen &textPen, const QPen &lightingPen) { m_BorderPen = borderPen; m_TextPen = textPen; m_LightingPen = lightingPen; this->update(); } /** ******************