Qt自定义消息提示框源码

#include "Toastwidget.h" #include <QHBoxLayout> #include <QTimer> #include <QGraphicsDropShadowEffect> #include <QFontMetrics> #include <QApplication> #include <QDesktopWidget> QMap<QString, QRect> ToastWidget::sToastMap; QReadWriteLock ToastWidget::sLocker; #define MAX_LEN 500 ToastWidget::ToastWidget(QWidget* parent) : QWidget(parent) { setWindowFlags(windowFlags() | Qt::FramelessWindowHint); setAttribute(Qt::WA_TranslucentBackground); QWidget* centralWidget = new QWidget(this); centralWidget->setStyleSheet("background-color: rgba(255, 255, 255, 0.3);border-radius:10px;"); QHBoxLayout* pLayout = new QHBoxLayout(this); pLayout->addWidget(centralWidget); pLayout->setContentsMargins(20, 20, 20, 20); QHBoxLayout* horizontalLayout = new QHBoxLayout(centralWidget); horizontalLayout->setContentsMargins(25, 15, 30, 15); label_icon = new QLabel(centralWidget); // label_icon->setMinimumSize(QSize(20, 20)); // label_icon->setMaximumSize(QSize(20, 20)); label_icon->setPixmap(QPixmap(":/Resources/Toast/toast_success.png")); horizontalLayout->addWidget(label_icon); label_text = new QLabel(centralWidget); QFont font( "Microsoft YaHei", 13, 65); label_text->setFont(font); label_text->setAttribute(Qt::WA_TranslucentBackground); horizontalLayout->addWidget(label_text); QGraphicsDropShadowEffect* pEffect = new QGraphicsDropShadowEffect(centralWidget); pEffect->setOffset(0, 0); //阴影颜色 pEffect->setColor(QColor(89, 126, 247)); //阴影半径 pEffect->setBlurRadius(5); centralWidget->setGraphicsEffect(pEffect); } ToastWidget::~ToastWidget() { if(m_animation != nullptr) { m_animation->stop(); m_animation->deleteLater(); m_animation = nullptr; } ToastWidget::removeToast(m_text); } void ToastWidget::setIcon(const QString& icon) { label_icon->setPixmap(QPixmap(icon).scaled(30,30)); } void ToastWidget::setText(const QString& text) { m_text = text; QString str = text; QFontMetrics metrics(label_text->font()); if (metrics.width(m_text) > MAX_LEN) { str = QFontMetrics(label_text->font()).elidedText(m_text, Qt::ElideMiddle, MAX_LEN); } label_text->setText(str); } void ToastWidget::timeOutSlot() { if(m_animation != nullptr) { m_animation->stop(); delete m_animation; m_animation = nullptr; } // 结束动画 m_animation = new QPropertyAnimation(this, "windowOpacity"); m_animation->setDuration(600); m_animation->setStartValue(1); m_animation->setEndValue(0); m_animation->start(); connect(m_animation, &QPropertyAnimation::finished, [this] { close(); deleteLater(); }); } void ToastWidget::showAnimation(int timeout) { if(m_animation != nullptr) { m_animation->stop(); delete m_animation; m_animation = nullptr; } // 开始动画 m_animation = new QPropertyAnimation(this, "windowOpacity"); m_animation->setDuration(400); m_animation->setStartValue(0); m_animation->setEndValue(1); m_animation->start(); show(); this->activateWindow(); this->raise(); QTimer::singleShot(timeout, this, &ToastWidget::timeOutSlot); } void ToastWidget::showTip(const QString& text, const QString& icon, QWidget* parent /*= nullptr*/) { if (ToastWidget::existToast(text)) { return; } ToastWidget* toast = new ToastWidget(/*parent*/); toast->setWindowFlags(toast->windowFlags() | Qt::WindowStaysOnTopHint); // 置顶 toast->setText(text); toast->setIcon(icon); toast->adjustSize(); QRect rc; int x,y; int w = toast->width(); int h = toast->height(); if (parent == nullptr) { QDesktopWidget *desktop = QApplication::desktop(); rc = QRect(0, 0, desktop->width(), desktop->height()); x = rc.width()/2 - w/2; y = rc.height()/2 - h/2; } else { rc = parent->rect(); x = rc.width()/2 - w/2 + parent->x(); y = rc.height()/2 - h/2 + parent->y(); } //if (parent == nullptr) { x += rc.left(); y += rc.top(); } { QReadLocker locker(&sLocker); while (1) { QRect rc = QRect(x, y, toast->width(), toast->height()); rc = rc.marginsRemoved(QMargins(20, 20, 20, 20)); QMap<QString, QRect>::iterator it = sToastMap.begin(); bool intersects = false; while( it != sToastMap.end()) { if (it.value().intersects(rc)) { intersects = true; y += (toast->height() - 40 + 10); break; } it++; } if (intersects == false) { break; } } } rc = QRect(x, y, toast->width(), toast->height()); rc = rc.marginsRemoved(QMargins(20, 20, 20, 20)); insertToast(text, rc); toast->move(x, y); toast->showAnimation(); } void ToastWidget::showInformation(const QString& text, QWidget* parent) { ToastWidget::showTip(text, ":/Resources/Toast/toast_success.png", parent); } void ToastWidget::showError(const QString& text, QWidget* parent) { ToastWidget::showTip(text, ":/Resources/Toast/toast_fail.png", parent); } void ToastWidget::showWarning(const QString& text, QWidget* parent) { ToastWidget::showTip(text, ":/Resources/Toast/toast_warnning.png", parent); } void ToastWidget::insertToast(const QString& text, QRect rect) { QWriteLocker locker(&sLocker); sToastMap[text] = rect; } void ToastWidget::removeToast(const QString& text) { QWriteLocker locker(&sLocker); sToastMap.remove(text); } bool ToastWidget::existToast(const QString& text) { QReadLocker locker(&sLocker); return sToastMap.contains(text); }