label_stack.h

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#ifndef LABEL_STACK_H
#define LABEL_STACK_H
 
#include <QLabel>
#include <QStack>
#include <QElapsedTimer>
#include <QTimer>
 
class LabelStack : public QLabel
{
    Q_OBJECT
public:
    explicit LabelStack(QWidget *parent = 0);
    void setTemporaryContext(const int ctx);
    void pushText(const QString &text, int ctx, const QString &tooltip = QString());
    void setShrinkable(bool shrinkable = true);
 
protected:
    void mousePressEvent(QMouseEvent *event);
    void mouseReleaseEvent(QMouseEvent *event);
    void mouseDoubleClickEvent(QMouseEvent *event);
    void mouseMoveEvent(QMouseEvent *event);
    void contextMenuEvent(QContextMenuEvent *event);
    void paintEvent (QPaintEvent *event);
 
private:
    typedef struct _StackItem {
        QString text;
        QString tooltip;
        int ctx;
    } StackItem;
 
    int temporary_ctx_;
    QList<StackItem> labels_;
    bool shrinkable_;
    QElapsedTimer temporary_epoch_;
    QTimer temporary_timer_;
 
    void fillLabel();
 
signals:
    void toggleTemporaryFlash(bool enable);
    void mousePressedAt(const QPoint &global_pos, Qt::MouseButton button);
 
public slots:
    void popText(int ctx);
 
private slots:
    void updateTemporaryStatus();
};
 
#endif // LABEL_STACK_H