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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* zoomslider.h
*
* Fri May 2 21:23:26 CEST 2014
* Copyright 2014 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of DrumGizmo.
*
* DrumGizmo 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.
*
* DrumGizmo 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 DrumGizmo; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#pragma once
#include <QSlider>
#include <QObject>
class ZoomSlider
: public QSlider
{
Q_OBJECT
public:
ZoomSlider(Qt::Orientation orientation);
//! Range of the slider. 'from' may be lesser than 'to' which will invert the
//! slider.
void setRange(float from, float to);
//! Set the distance between emitting of valueChanged signals.
//! Example: from:=0, to:=1 and width:=0.5 will emit valueChanged signals on
//! 0.0, 0.5 and 1.0 (ie. the slider will have 3 actual values)
//! NOTE: If 'width' is greater than the span of [from; to] only the 'from'
//! and 'to' values can be selected on the slider.
void setTickWidth(float width);
void setValue(float value);
signals:
void valueChanged(float value);
private slots:
void sliderValueChanged(int value);
protected:
void paintEvent(QPaintEvent* ev);
private:
float fromSlider(int value);
bool inverted;
float from;
float to;
float tick_width;
};
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