/usr/include/gxw/GxLevelSlider.h is in libgxw-dev 0.35.2-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 | /*
* Copyright (C) 2009, 2010 Hermann Meyer, James Warden, Andreas Degert
*
* 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; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef __GX_LEVEL_SLIDER_H__
#define __GX_LEVEL_SLIDER_H__
#include "GxVSlider.h"
G_BEGIN_DECLS
#define GX_TYPE_LEVEL_SLIDER (gx_level_slider_get_type())
#define GX_LEVEL_SLIDER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GX_TYPE_LEVEL_SLIDER, GxLevelSlider))
#define GX_LEVEL_SLIDER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GX_TYPE_LEVEL_SLIDER, GxLevelSliderClass))
#define GX_IS_LEVEL_SLIDER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GX_TYPE_LEVEL_SLIDER))
#define GX_IS_LEVEL_SLIDER_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE ((klass), GX_TYPE_LEVEL_SLIDER))
#define GX_LEVEL_SLIDER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GX_TYPE_LEVEL_SLIDER, GxLevelSliderClass))
typedef struct _GxLevelSlider GxLevelSlider;
typedef struct _GxLevelSliderClass GxLevelSliderClass;
struct _GxLevelSlider {
GxVSlider parent;
};
struct _GxLevelSliderClass {
GxVSliderClass parent_class;
};
GType gx_level_slider_get_type(void);
inline double log_meter (double db)
{
// keep log_meter_inv in sync when changing anying!
gfloat def = 0.0f; /* Meter deflection %age */
if (db < -70.0f) {
def = 0.0f;
} else if (db < -60.0f) {
def = (db + 70.0f) * 0.25f;
} else if (db < -50.0f) {
def = (db + 60.0f) * 0.5f + 2.5f;
} else if (db < -40.0f) {
def = (db + 50.0f) * 0.75f + 7.5f;
} else if (db < -30.0f) {
def = (db + 40.0f) * 1.5f + 15.0f;
} else if (db < -20.0f) {
def = (db + 30.0f) * 2.0f + 30.0f;
} else if (db < 6.0f) {
def = (db + 20.0f) * 2.5f + 50.0f;
} else {
def = 115.0f;
}
/* 115 is the deflection %age that would be
when db=6.0. this is an arbitrary
endpoint for our scaling.
*/
return def/115.0f;
}
G_END_DECLS
#endif /* __GX_LEVEL_SLIDER_H__ */
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