shortcutedit.cpp

#include "stdafx.h"

#include "shortcutedit.h"

ShortcutEdit::ShortcutEdit(QWidget *parent) : QLineEdit(parent) {}

bool ShortcutEdit::event(QEvent *e)
{
    if (e->type() == QEvent::KeyPress)
    {
        QKeyEvent *keyEvent = static_cast<QKeyEvent *>(e);

        int     keyInt = keyEvent->key();
        Qt::Key key    = static_cast<Qt::Key>(keyInt);
        if (key == Qt::Key_unknown)
        {
            qDebug() << "Unknown key from a macro probably";
            return false;
        }
        // the user have clicked just and only the special keys Ctrl, Shift, Alt, Meta.
        if (key == Qt::Key_Control || key == Qt::Key_Shift || key == Qt::Key_Alt || key == Qt::Key_Meta)
        {
            qDebug() << "Single click of special key: Ctrl, Shift, Alt or Meta";
            return false;
        }

        // check for a combination of user clicks
        Qt::KeyboardModifiers modifiers = keyEvent->modifiers();
        QString               keyText   = keyEvent->text();
        // if the keyText is empty than it's a special key like F1, F5, ...
        qDebug() << "Pressed Key:" << keyText;

        std::map<Qt::KeyboardModifier, Qt::Modifier> m = {
            {Qt::ShiftModifier, Qt::SHIFT},
            {Qt::ControlModifier, Qt::CTRL},
            {Qt::AltModifier, Qt::ALT},
            {Qt::MetaModifier, Qt::META},
        };

        for (auto k : m)
        {
            if (modifiers & k.first)
                keyInt += k.second;
        }
        QString shortcut = text();
        if (shortcut.contains(", ") || shortcut.isEmpty())
            setText(QKeySequence(keyInt).toString());
        else
            setText(shortcut % ", " % QKeySequence(keyInt).toString());
        return true;
    }
    return QLineEdit::event(e);
}