47034d7901
Rather than having widget/widget2/widget_callback fields in the struct alsa_elem, have a list of callbacks and allow private data to be passed to callbacks.
82 lines
2.2 KiB
C
82 lines
2.2 KiB
C
// SPDX-FileCopyrightText: 2022 Geoffrey D. Bennett <g@b4.vu>
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// SPDX-License-Identifier: GPL-3.0-or-later
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#include "widget-boolean.h"
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struct boolean {
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struct alsa_elem *elem;
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GtkWidget *button;
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};
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static void button_clicked(GtkWidget *widget, struct alsa_elem *elem) {
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int value = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(widget));
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alsa_set_elem_value(elem, value);
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}
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static void toggle_button_set_text(GtkWidget *button, const char *text) {
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if (!text)
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return;
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if (*text == '*') {
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GtkWidget *icon = gtk_image_new_from_icon_name(text + 1);
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gtk_button_set_child(GTK_BUTTON(button), icon);
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} else {
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gtk_button_set_label(GTK_BUTTON(button), text);
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}
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}
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static void toggle_button_updated(
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struct alsa_elem *elem,
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void *private
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) {
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struct boolean *data = private;
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int is_writable = alsa_get_elem_writable(elem);
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gtk_widget_set_sensitive(data->button, is_writable);
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int value = !!alsa_get_elem_value(elem);
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gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(data->button), value);
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toggle_button_set_text(data->button, elem->bool_text[value]);
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}
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GtkWidget *make_boolean_alsa_elem(
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struct alsa_elem *elem,
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const char *disabled_text,
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const char *enabled_text
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) {
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struct boolean *data = g_malloc(sizeof(struct boolean));
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data->elem = elem;
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data->button = gtk_toggle_button_new();
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g_signal_connect(
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data->button, "clicked", G_CALLBACK(button_clicked), elem
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);
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alsa_elem_add_callback(elem, toggle_button_updated, data);
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elem->bool_text[0] = disabled_text;
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elem->bool_text[1] = enabled_text;
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// find the maximum width and height of both possible labels
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int max_width = 0, max_height = 0;
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for (int i = 0; i < 2; i++) {
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toggle_button_set_text(data->button, elem->bool_text[i]);
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GtkRequisition *size = gtk_requisition_new();
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gtk_widget_get_preferred_size(data->button, size, NULL);
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if (size->width > max_width)
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max_width = size->width;
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if (size->height > max_height)
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max_height = size->height;
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}
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// set the widget minimum size to the maximum label size so that the
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// widget doesn't change size when the label changes
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gtk_widget_set_size_request(data->button, max_width, max_height);
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toggle_button_updated(elem, data);
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return data->button;
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}
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