drmr2/nknob.h

88 lines
2.5 KiB
C

/* nknob.h
* LV2 DrMr2 plugin
* Copyright 2012 Nick Lanham <nick@afternight.org>
*
* NKnob - A simplified version of phatknob that just is a new gui
* over a GtkRange (i.e. it can be used exactly like a
* GtkRange from the outside)
*
* From PhatKnob code:
* Most of this code comes from gAlan 0.2.0, copyright (C) 1999
* Tony Garnock-Jones, with modifications by Sean Bolton,
* copyright (c) 2004. (gtkdial.c rolls over in its grave.)
*
* Phatised by Loki Davison.
*
* GNU Public License v3. source code is available at
* <http://github.com/nicklan/drmr>
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
#if defined(GTK_DISABLE_SINGLE_INCLUDES) && !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
#error "Only <gtk/gtk.h> can be included directly."
#endif
#ifndef __NKNOB_H__
#define __NKNOB_H__
#include <gtk/gtkrange.h>
G_BEGIN_DECLS
#define N_TYPE_KNOB (n_knob_get_type ( ))
#define N_KNOB(obj) GTK_CHECK_CAST(obj, n_knob_get_type(), NKnob)
#define N_KNOB_CLASS(klass) GTK_CHECK_CLASS_CAST(klass, n_knob_get_type(), NKnobClass)
#define N_IS_KNOB(obj) GTK_CHECK_TYPE(obj, n_knob_get_type())
#define N_IS_KNOB_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), N_TYPE_KNOB))
#define N_KNOB_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), N_TYPE_KNOB, NKnobClass))
typedef struct _NKnob NKnob;
typedef struct _NKnobClass NKnobClass;
struct _NKnob {
GtkRange range;
/* image prefix */
gchar *load_prefix;
/* State of widget (to do with user interaction) */
guint8 state;
gint saved_x, saved_y;
/* size of the widget */
gint size;
/* Pixmap for knob */
GdkPixbuf *pixbuf;
};
struct _NKnobClass {
GtkRangeClass parent_class;
};
GType n_knob_get_type ( ) G_GNUC_CONST;
GtkWidget* n_knob_new (GtkAdjustment* adjustment);
GtkWidget* n_knob_new_with_range (double value,
double lower,
double upper,
double step);
void n_knob_set_load_prefix(NKnob* knob, gchar* prefix);
gchar* n_knob_get_load_prefix(NKnob* knob);
G_END_DECLS
#endif