/usr/include/swami/libswamigui/SwamiguiSpectrumCanvas.h is in libswami-dev 2.0.0+svn389-1.
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 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 | /*
* SwamiguiSpectrumCanvas.h - Spectrum frequency canvas item
* A canvas item for displaying frequency spectrum data
*
* Swami
* Copyright (C) 1999-2010 Joshua "Element" Green <jgreen@users.sourceforge.net>
*
* 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; version 2
* of the License only.
*
* 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., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA or point your web browser to http://www.gnu.org.
*/
#ifndef __SWAMIGUI_SPECTRUM_CANVAS_H__
#define __SWAMIGUI_SPECTRUM_CANVAS_H__
#include <gtk/gtk.h>
#include <libgnomecanvas/libgnomecanvas.h>
#include <libinstpatch/libinstpatch.h>
typedef struct _SwamiguiSpectrumCanvas SwamiguiSpectrumCanvas;
typedef struct _SwamiguiSpectrumCanvasClass SwamiguiSpectrumCanvasClass;
#define SWAMIGUI_TYPE_SPECTRUM_CANVAS (swamigui_spectrum_canvas_get_type ())
#define SWAMIGUI_SPECTRUM_CANVAS(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), SWAMIGUI_TYPE_SPECTRUM_CANVAS, \
SwamiguiSpectrumCanvas))
#define SWAMIGUI_SPECTRUM_CANVAS_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), SWAMIGUI_TYPE_SPECTRUM_CANVAS, \
SwamiguiSpectrumCanvasClass))
#define SWAMIGUI_IS_SPECTRUM_CANVAS(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), SWAMIGUI_TYPE_SPECTRUM_CANVAS))
#define SWAMIGUI_IS_SPECTRUM_CANVAS_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE ((klass), SWAMIGUI_TYPE_SPECTRUM_CANVAS))
/**
* SwamiguiSpectrumDestroyNotify:
* @spectrum: The spectrum data pointer as passed to
* swamigui_spectrum_canvas_set_data().
* @size: The number of values in the @spectrum array
*
* This is a function type that gets called when a spectrum canvas item
* is destroyed. This function is responsible for freeing @spectrum.
*/
typedef void (*SwamiguiSpectrumDestroyNotify)(double *spectrum, guint size);
/* Spectrum canvas item */
struct _SwamiguiSpectrumCanvas
{
GnomeCanvasItem parent_instance;
/*< private >*/
double *spectrum; /* spectrum data */
guint spectrum_size; /* number of values in spectrum data */
SwamiguiSpectrumDestroyNotify notify; /* notify function for spectrum data */
double max_value; /* maximum value in spectrum data */
GtkAdjustment *adj; /* adjustment for view */
gboolean update_adj; /* TRUE if adj should be updated (to stop loop) */
guint start; /* start spectrum index */
double zoom; /* zoom factor indexes/pixel */
double zoom_ampl; /* amplitude zoom factor */
int x, y; /* x, y coordinates of spectrum item */
int width, height; /* width and height in pixels */
GdkGC *min_gc; /* GC for drawing minimum lines */
GdkGC *max_gc; /* GC for drawing maximum lines */
GdkGC *bar_gc; /* GC for spectrum bars (zoom < 1.0) */
guint need_bbox_update : 1; /* set if bbox needs to be updated */
};
struct _SwamiguiSpectrumCanvasClass
{
GnomeCanvasItemClass parent_class;
};
GType swamigui_spectrum_canvas_get_type (void);
void swamigui_spectrum_canvas_set_data (SwamiguiSpectrumCanvas *canvas,
double *spectrum, guint size,
SwamiguiSpectrumDestroyNotify notify);
int swamigui_spectrum_canvas_pos_to_spectrum (SwamiguiSpectrumCanvas *canvas,
int xpos);
int swamigui_spectrum_canvas_spectrum_to_pos (SwamiguiSpectrumCanvas *canvas,
int index);
#endif
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