114 lines
3.1 KiB
C
114 lines
3.1 KiB
C
// SPDX-FileCopyrightText: 2021 Stiliyan Varbanov <https://www.fiverr.com/stilvar>
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// SPDX-FileCopyrightText: 2022-2025 Geoffrey D. Bennett <g@b4.vu>
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// SPDX-License-Identifier: LGPL-3.0-or-later
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/*
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* A Dial widget for GTK-4 similar to GtkScale.
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* 2021 Stiliyan Varbanov www.fiverr.com/stilvar
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*/
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#ifndef __GTK_DIAL_H__
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#define __GTK_DIAL_H__
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#include <gtk/gtk.h>
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G_BEGIN_DECLS
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#define GTK_TYPE_DIAL (gtk_dial_get_type())
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#define GTK_DIAL(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), GTK_TYPE_DIAL, GtkDial))
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#define GTK_DIAL_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), GTK_TYPE_DIAL, GtkDialClass))
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#define GTK_IS_DIAL(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), GTK_TYPE_DIAL))
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#define GTK_IS_DIAL_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), GTK_TYPE_DIAL))
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#define GTK_DIAL_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), GTK_TYPE_DIAL, GtkDialClass))
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typedef struct _GtkDial GtkDial;
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typedef struct _GtkDialClass GtkDialClass;
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struct _GtkDialClass {
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GtkWidgetClass parent_class;
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void (*value_changed)(GtkDial *dial);
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/* action signals for keybindings */
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void (*move_slider)(GtkDial *dial, GtkScrollType scroll);
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gboolean (*change_value)(
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GtkDial *dial,
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GtkScrollType scroll,
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double new_value
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);
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};
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GType gtk_dial_get_type(void) G_GNUC_CONST;
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GtkWidget *gtk_dial_new(GtkAdjustment *adjustment);
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GtkWidget *gtk_dial_new_with_range(
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double min,
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double max,
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double step,
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double page
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);
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void gtk_dial_set_has_origin(GtkDial *dial, gboolean has_origin);
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gboolean gtk_dial_get_has_origin(GtkDial *dial);
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void gtk_dial_set_adjustment(GtkDial *dial, GtkAdjustment *adj);
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GtkAdjustment *gtk_dial_get_adjustment(GtkDial *dial);
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double gtk_dial_get_value(GtkDial *dial);
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void gtk_dial_set_value(GtkDial *dial, double value);
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void gtk_dial_set_round_digits(GtkDial *dial, int round_digits);
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int gtk_dial_get_round_digits(GtkDial *dial);
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void gtk_dial_set_zero_db(GtkDial *dial, double zero_db);
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double gtk_dial_get_zero_db(GtkDial *dial);
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void gtk_dial_set_off_db(GtkDial *dial, double off_db);
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double gtk_dial_get_off_db(GtkDial *dial);
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void gtk_dial_set_is_linear(GtkDial *dial, gboolean is_linear);
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gboolean gtk_dial_get_is_linear(GtkDial *dial);
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// taper functions
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enum {
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GTK_DIAL_TAPER_LINEAR,
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GTK_DIAL_TAPER_LOG
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};
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void gtk_dial_set_taper(GtkDial *dial, int taper);
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int gtk_dial_get_taper(GtkDial *dial);
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void gtk_dial_set_taper_linear_breakpoints(
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GtkDial *dial,
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const double *breakpoints,
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const double *outputs,
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int count
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);
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void gtk_dial_set_can_control(GtkDial *dial, gboolean can_control);
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gboolean gtk_dial_get_can_control(GtkDial *dial);
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void gtk_dial_set_level_meter_colours(
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GtkDial *dial,
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const int *breakpoints,
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const double *colours,
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int count
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);
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void gtk_dial_set_peak_hold(GtkDial *dial, int peak_hold);
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int gtk_dial_get_peak_hold(GtkDial *dial);
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void gtk_dial_peak_tick(void);
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int cdb_to_linear_value(
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int db, int min_val, int max_val, int min_db, int max_db
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);
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int linear_value_to_cdb(
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int value, int min_val, int max_val, int min_db, int max_db
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);
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G_END_DECLS
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#endif
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