/* Copyright (C) 2020, KylinSoft Co., Ltd.


 * This file is part of Kylin-Screenshot.
 * This program 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.
 *
 * This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.
*/

#pragma once

#include "capturetool.h"

class AbstractTwoPointTool : public CaptureTool {
    Q_OBJECT
public:
    explicit AbstractTwoPointTool(QObject *parent = nullptr);

    bool isValid() const override;
    bool closeOnButtonPressed() const override;
    bool isSelectable() const override;
    bool showMousePreview() const override;

    QIcon icon(const QColor &background, bool inEditor) const override {}

    void undo(QPixmap &pixmap) override;

public slots:
    void drawEnd(const QPoint &p) override;
    void drawMove(const QPoint &p) override;
    void drawMoveWithAdjustment(const QPoint &p) override;
    void colorChanged(const QColor &c) override;
    void thicknessChanged(const int th) override;
    void textthicknessChanged(const int th) override;
    void textChanged(const CaptureContext &context) override;
protected:
    void updateBackup(const QPixmap &pixmap);
    QRect backupRect(const QRect &limits) const;

    QPixmap m_pixmapBackup;
    QPair<QPoint, QPoint> m_points;
    QColor m_color;
    int m_thickness;
    // use m_padding to extend the area of the backup
    int m_padding;

    bool m_supportsOrthogonalAdj = false;
    bool m_supportsDiagonalAdj = false;
    qreal pixelRatio;
    QRect  rect;
private:
    QPoint adjustedVector(QPoint v) const;
};
