MusicClient/volumntool.cpp at master · xing-sudo/MusicClient · GitHub

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#include "volumntool.h"
#include "ui_volumntool.h"
#include<QGraphicsDropShadowEffect>

VolumnTool::VolumnTool(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::VolumnTool)
    ,_ismuted(false)
    ,_volumerantio(20)
{
    ui->setupUi(this);
    //设置窗口属性
    setWindowFlags(Qt::Popup|Qt::FramelessWindowHint|Qt::NoDropShadowWindowHint);
    //透明窗口
    setAttribute(Qt::WA_TranslucentBackground);
    //自定义阴影效果
    QGraphicsDropShadowEffect* effect=new QGraphicsDropShadowEffect(this);
    effect->setOffset(0,0);
    effect->setColor("#646464");
    effect->setBlurRadius(10);
    setGraphicsEffect(effect);
    //改变图片
    ui->Silencebtn->setIcon(QIcon(":/images/volumn.png"));
    //对默认音量进行设置
    QRect rec=ui->OutLine->geometry();
    ui->OutLine->setGeometry(rec.x(),rec.height()-36+25,rec.width(),36);
    ui->Controll->move(ui->Controll->x(),ui->OutLine->y()-ui->Controll->height()/2);
    ui->Ration->setText("20%");
    connect(ui->Silencebtn,&QPushButton::clicked,this,&VolumnTool::OnSilenceClick);
    ui->SliderBox->installEventFilter(this);
}

VolumnTool::~VolumnTool()
{
    delete ui;
}

void VolumnTool::paintEvent(QPaintEvent *event)
{
    (void)event;
    //创建painter对象
    QPainter painter(this);
    //设置抗锯齿
    painter.setRenderHint(QPainter::Antialiasing,true);
    //设置画笔
    //没有画笔画出来就没有边框和轮廓
    painter.setPen(Qt::NoPen);
    //画刷颜色
    painter.setBrush(Qt::white);
    //创建三角形
    QPolygon polygon;
    polygon.append(QPoint(30,300));
    polygon.append(QPoint(70,300));
    polygon.append(QPoint(50,320));
    //绘制三角形
    painter.drawPolygon(polygon);
}

void VolumnTool::OnSilenceClick()
{
    _ismuted=!_ismuted;
    if(_ismuted)
    {
        ui->Silencebtn->setIcon(QIcon(":/images/silent.png"));
    }else
    {
        ui->Silencebtn->setIcon(QIcon(":/images/volumn.png"));
    }
    emit setsilence(_ismuted);
}

bool VolumnTool::eventFilter(QObject *object, QEvent *event)
{
    if(object==ui->SliderBox)
    {
        if(event->type()==QEvent::MouseButtonPress)
        {
            SetVolume();
        }else if(event->type()==QEvent::MouseMove)
        {
            SetVolume();
            emit setvolumeratio(_volumerantio);
        }else if(event->type()==QEvent::MouseButtonRelease)
        {
            emit setvolumeratio(_volumerantio);
        }
        return true;
    }
    return QObject::eventFilter(object,event);
}

void VolumnTool::SetVolume()
{
    int height=ui->SliderBox->mapFromGlobal(QCursor().pos()).y();
    height=height<25?25:height;
    height=height>205?205:height;
    ui->Controll->move(ui->Controll->x(),height-ui->Controll->height()/2);
    ui->OutLine->setGeometry(ui->OutLine->x(),height,ui->OutLine->width(),205-height);
    float maxheigtht=180.0f;
    float ration=(float)ui->OutLine->height()/maxheigtht;
    ration=qBound(0.0f,ration,1.0f);
    _volumerantio=ration;
    ui->Ration->setText(QString("%1%").arg(_volumerantio*100,0,'f',1));
}