Implement basic functionality

notificationwidget.cpp

@@ -0,0 +1,97 @@
+#include <QGraphicsOpacityEffect>
+#include <QPropertyAnimation>
+#include <QString>
+
+#include "notificationwidget.h"
+
+#include <QPainter>
+
+NotificationWidget::NotificationWidget(QWidget *parent) :
+    QWidget(parent)
+{
+    resize(200, 50);
+
+    setWindowFlags(Qt::FramelessWindowHint | Qt::Tool);
+    setAttribute(Qt::WA_TranslucentBackground);
+    setAttribute(Qt::WA_ShowWithoutActivating);
+
+    animation.setTargetObject(this);
+    animation.setPropertyName("popupOpacity");
+    animation.setDuration(150);
+
+    label.setAlignment(Qt::AlignHCenter | Qt::AlignVCenter);
+
+    layout.addWidget(&label, 0, 0);
+    setLayout(&layout);
+    setAttribute(Qt::WA_X11NetWmWindowTypeSplash);
+}
+
+void NotificationWidget::paintEvent(QPaintEvent *e)
+{
+    Q_UNUSED(e)
+
+    QPainter painter(this);
+    painter.setRenderHint(QPainter::Antialiasing);
+
+    // Prepare the popup dimensions
+    QRect roundedRectDimensions;
+    roundedRectDimensions.setX(rect().x() + 5);
+    roundedRectDimensions.setY(rect().y() + 5);
+    roundedRectDimensions.setWidth(rect().width() - 10);
+    roundedRectDimensions.setHeight(rect().height() - 10);
+
+    painter.setBrush(QBrush(Qt::lightGray));
+
+    QPen pen;
+    pen.setColor(Qt::gray);
+    pen.setWidth(3);
+    painter.setPen(pen);
+
+    // Draw the popup body
+    painter.drawRoundedRect(roundedRectDimensions, 15, 15);
+}
+
+void NotificationWidget::setPopupText(const QString &text)
+{
+    label.setText(text);
+}
+
+void NotificationWidget::show()
+{
+    setWindowOpacity(0.0);
+
+    animation.setStartValue(0.0);
+    animation.setEndValue(1.0);
+
+    QWidget::show();
+
+    animation.start();
+}
+
+void NotificationWidget::setPopupOpacity(float opacity)
+{
+    popupOpacity = opacity;
+    setWindowOpacity(static_cast<double>(opacity));
+}
+
+float NotificationWidget::getPopupOpacity() const
+{
+    return popupOpacity;
+}
+
+void NotificationWidget::fadeOut(){
+    QGraphicsOpacityEffect *effect = new QGraphicsOpacityEffect();
+    setGraphicsEffect(effect);
+    QPropertyAnimation *a = new QPropertyAnimation(effect,"opacity");
+    a->setDuration(1000); // it will took 1000ms to face out
+    a->setStartValue(1);
+    a->setEndValue(0);
+    a->setEasingCurve(QEasingCurve::OutBack);
+    a->start(QPropertyAnimation::DeleteWhenStopped);
+    connect(a, SIGNAL(finished()), this, SLOT(hideAndDestroy()));
+}
+
+void NotificationWidget::hideAndDestroy(){
+    this->hide();
+    delete this;
+}