errorlabel.h

/* OpenCV Catalogue is a desktop GUI application to showcase some OpenCV functions
 * and parameter adjustment using controls in GUI.
 * Copyright (C) 2020  Jairaj Jangle
 *
 * This file is part of OpenCV Catalogue.
 *
 * OpenCV Catalogue is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * OpenCV Catalogue is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with OpenCV Catalogue.  If not, see <https://www.gnu.org/licenses/>.
 */

#pragma once

#include <QLabel>

/**
 * @brief The ErrorLabel class Custom widget to show Colored label
 *  Color is set according to the level of info message: Warning, Error, Info...
 */
class ErrorLabel : public QLabel
{
    Q_OBJECT

public:
    explicit ErrorLabel(QString error = "",
                        QWidget* parent = nullptr)
        :QLabel(parent)
    {
        this->setStyleSheet("QLabel { color : red; }");
        this->setText(error);
        QSizePolicy sp_retain = this->sizePolicy();
        sp_retain.setRetainSizeWhenHidden(true);
        this->setSizePolicy(sp_retain);
    }

    /**
     * @brief hide Hides the Error Label
     */
    void hide()
    {
        this->setVisible(false);
    }
    /**
     * @brief show Shows the Error Label
     */
    void show()
    {
        this->setVisible(true);
    }
};