multimedia/client/qt_gl_/yuvgl/components/toast.cpp

#include "toast.h"
#include <QPropertyAnimation>
#include <QScreen>
#include <QGuiApplication>
#include <QPainter>
#include <QTimer>

ToastWidget::ToastWidget(QWidget *parent)
    : QWidget(parent)
{
    ui.setupUi(this);

    setWindowFlags(windowFlags() | Qt::FramelessWindowHint | Qt::Tool);// 无边框 无任务栏
    setAttribute(Qt::WA_TranslucentBackground, true);   // 背景透明
}

ToastWidget::~ToastWidget()
{

}


void ToastWidget::setText(const QString& text)
{
    ui.label->setText(text);
}

void ToastWidget::showAnimation(int timeout /*= 2000*/)
{
    // 开始动画
    QPropertyAnimation *animation = new QPropertyAnimation(this, "windowOpacity");
    animation->setDuration(1000);
    animation->setStartValue(0);
    animation->setEndValue(1);
    animation->start();
    show();

    QTimer::singleShot(timeout, [&]
    {
        // 结束动画
        QPropertyAnimation *animation = new QPropertyAnimation(this, "windowOpacity");
        animation->setDuration(1000);
        animation->setStartValue(1);
        animation->setEndValue(0);
        animation->start();
        connect(animation, &QPropertyAnimation::finished, [&]
        {
            close();
            deleteLater();// 关闭后析构
        });
    });
}

void ToastWidget::showTip(const QString& text, QWidget* parent /*= nullptr*/)
{
    ToastWidget* toast = new ToastWidget(parent);
    toast->setWindowFlags(toast->windowFlags() | Qt::WindowStaysOnTopHint); // 置顶
    toast->setText(text);
    toast->setStyleSheet("font:bold;font-size:24px;color:rgb(255,255,255);");
    toast->adjustSize();    //设置完文本后调整下大小

    // 测试显示位于主屏的70%高度位置
    QScreen* pScreen = QGuiApplication::primaryScreen();
    toast->move((pScreen->size().width() - toast->width()) / 2,
                pScreen->size().height() * 5 / 10);
    toast->showAnimation(1000);
}

void ToastWidget::paintEvent(QPaintEvent *event)
{
    QPainter paint(this);
    paint.begin(this);
    auto kBackgroundColor = QColor(255, 255, 255);
    kBackgroundColor.setAlpha(0.0 * 255);// 透明度为0
    paint.setRenderHint(QPainter::Antialiasing, true);
    paint.setPen(Qt::NoPen);
    paint.setBrush(QBrush(kBackgroundColor, Qt::SolidPattern));//设置画刷形式
    paint.drawRect(0, 0, width(), height());
    paint.end();
}