qtToast.7z

#include "Toast.h" #include <QPropertyAnimation> #include <QScreen> #include <QGuiApplication> #include <QPainter> #include <QTimer> Toast::Toast(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 } Toast::~Toast() { } void Toast::setText(const QString& text) { ui.label->setText(text); } void Toast::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 Toast::showTip(const QString& text, QWidget* parent /*= nullptr*/) { Toast* toast = new Toast(parent); toast->setWindowFlags(toast->windowFlags() | Qt::WindowStaysOnTopHint); // 置顶 toast->setText(text); 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() * 7 / 10); toast->showAnimation(); } void Toast::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(); }