Add snackbar

include/ui/SnackBar.h

@@ -0,0 +1,80 @@
+#pragma once
+
+#include <QCoreApplication>
+#include <QPaintEvent>
+#include <QStateMachine>
+#include <QTimer>
+
+#include "OverlayWidget.h"
+
+enum class SnackBarPosition {
+        Bottom,
+        Top,
+};
+
+class SnackBar : public OverlayWidget
+{
+        Q_OBJECT
+
+public:
+        explicit SnackBar(QWidget *parent);
+        ~SnackBar();
+
+        inline void setBackgroundColor(const QColor &color);
+        inline void setTextColor(const QColor &color);
+        inline void setPosition(SnackBarPosition pos);
+
+public slots:
+        void showMessage(const QString &msg);
+
+protected:
+        void paintEvent(QPaintEvent *event) override;
+        void mousePressEvent(QMouseEvent *event) override;
+
+private slots:
+        void onTimeout();
+        void hideMessage();
+
+private:
+        void stopTimers();
+        void start();
+
+        QColor bgColor_;
+        QColor textColor_;
+
+        qreal bgOpacity_;
+        qreal offset_;
+
+        QList<QString> messages_;
+
+        QTimer *showTimer_;
+        QTimer *hideTimer_;
+
+        int duration_;
+        int boxWidth_;
+        int boxHeight_;
+        int boxPadding_;
+
+        SnackBarPosition position_;
+};
+
+inline void
+SnackBar::setPosition(SnackBarPosition pos)
+{
+        position_ = pos;
+        update();
+}
+
+inline void
+SnackBar::setBackgroundColor(const QColor &color)
+{
+        bgColor_ = color;
+        update();
+}
+
+inline void
+SnackBar::setTextColor(const QColor &color)
+{
+        textColor_ = color;
+        update();
+}