fancylineedit.h

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#ifndef FANCYLINEEDIT_H
#define FANCYLINEEDIT_H

#include <QAbstractButton>
#include <QLineEdit>

class QEvent;

namespace Utils {

class FancyLineEditPrivate;

class IconButton : public QAbstractButton
{
    Q_OBJECT
public:
    explicit IconButton(QWidget *parent = nullptr);
    void paintEvent(QPaintEvent *event) override;
    void setIcon(const QIcon &icon) { m_icon = icon; update(); }
    void setHasMenu(bool hasMenu) { m_hasMenu = hasMenu; update(); }

    QSize sizeHint() const override;

protected:
    void keyPressEvent(QKeyEvent *ke) override;
    void keyReleaseEvent(QKeyEvent *ke) override;

private:
    QIcon m_icon;
    bool m_hasMenu;
};

class FancyLineEdit : public QLineEdit
{
    Q_OBJECT
    Q_ENUMS(Side)

public:
    enum Side {Left = 0, Right = 1};

    explicit FancyLineEdit(QWidget *parent = nullptr);
    ~FancyLineEdit();

    void setButtonIcon(Side side, const QIcon &icon);

    QMenu *buttonMenu(Side side) const;
    void setButtonMenu(Side side, QMenu *buttonMenu);

    void setButtonVisible(Side side, bool visible);
    bool isButtonVisible(Side side) const;
    QAbstractButton *button(Side side) const;

    void setButtonToolTip(Side side, const QString &);
    void setButtonFocusPolicy(Side side, Qt::FocusPolicy policy);

    // Set whether tabbing in will trigger the menu.
    void setMenuTabFocusTrigger(Side side, bool v);
    bool hasMenuTabFocusTrigger(Side side) const;

signals:
    void buttonClicked(Utils::FancyLineEdit::Side side);
    void leftButtonClicked();
    void rightButtonClicked();

private slots:
    void iconClicked();

protected:
    void resizeEvent(QResizeEvent *e) override;

private:
    void updateMargins();
    void updateButtonPositions();
    friend class FancyLineEditPrivate;

    FancyLineEditPrivate *d;
};

} // namespace Utils

#endif // FANCYLINEEDIT_H