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lmms/include/Draggable.h

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2.2 KiB
C++

/*
* Draggable.h
*
* Copyright (c) 2025 Lost Robot <r94231/at/gmail/dot/com>
*
* This file is part of LMMS - https://lmms.io
*
* 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 2 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 (see COPYING); if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA.
*
*/
#ifndef LMMS_GUI_DRAGGABLE_H
#define LMMS_GUI_DRAGGABLE_H
#include "FloatModelEditorBase.h"
namespace lmms::gui
{
/**
* @brief A pixmap that can be dragged from one location to another to control a FloatModel
*/
class LMMS_EXPORT Draggable : public FloatModelEditorBase
{
Q_OBJECT
public:
using FloatModelEditorBase::DirectionOfManipulation;
/**
* @param directionOfManipulation Direction the user can drag the control
* @param floatModel Pointer to the FloatModel this draggable modifies
* @param pixmap The pixmap shown for this handle
* @param pointA Starting pixel position (Y if vertical, X if horizontal)
* @param pointB Ending pixel position (Y if vertical, X if horizontal)
* @param parent Parent QWidget
*/
Draggable(DirectionOfManipulation directionOfManipulation,
FloatModel* floatModel, const QPixmap& pixmap, int pointA, int pointB, QWidget* parent = nullptr);
QSize sizeHint() const override;
void setPixmap(const QPixmap& pixmap);
void setDefaultValPixmap(const QPixmap& pixmap, float value = 0.f);
protected:
void paintEvent(QPaintEvent* event) override;
void mouseMoveEvent(QMouseEvent* me) override;
protected slots:
void handleMovement();
private:
QPixmap m_pixmap;
QPixmap m_defaultValPixmap;
float m_pointA;
float m_pointB;
float m_defaultValue;
bool m_hasDefaultValPixmap;
};
} // namespace lmms::gui
#endif // LMMS_GUI_DRAGGABLE_H