ocarina/gui/gst.cpp

/*
 * Copyright 2014 (c) Anna Schumaker.
 *
 * The gst_init() function parses command line options passed to Ocarina
 * through argv.  Use the command `gst-inspect-1.0 --help-gst` to find
 * what options are supported.
 */
extern "C" {
#include <core/audio.h>
#include <core/playlist.h>
#include <core/string.h>
#include <gui/builder.h>
}
#include <gui/ocarina.h>


static GtkScale  *o_seek;

static GtkSpinButton  *o_count;
static GtkToggleButton *o_enabled;
static GtkAdjustment *o_progress;

const gchar *TITLE_FMT  = "<span size='xx-large'>%s</span>";
const gchar *ARTIST_FMT = "<span size='x-large'>By: %s</span>";
const gchar *ALBUM_FMT  = "<span size='x-large'>From: %s</span>";

static inline void __audio_set_label(const gchar *label, const gchar *fmt,
				     const gchar *text)
{
	gchar *markup = g_markup_printf_escaped(fmt, text);
	gtk_label_set_markup(GTK_LABEL(gui_builder_widget(label)), markup);
	g_free(markup);
}

static inline void __audio_set_time_label(const gchar *label, unsigned int time)
{
	gchar *str = string_sec2str(time);
	__audio_set_label(label, "%s", str);
	g_free(str);
}

static void on_load(struct track *track)
{
	__audio_set_label("o_title",  TITLE_FMT,  track->tr_title);
	__audio_set_label("o_artist", ARTIST_FMT, track->tr_artist->ar_name);
	__audio_set_label("o_album",  ALBUM_FMT,  track->tr_album->al_name);

	__audio_set_time_label("o_position", 0);
	__audio_set_time_label("o_duration", track->tr_length);

	gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(gui_builder_widget("o_ban")),
				     playlist_has(PL_HIDDEN, track));
	gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(gui_builder_widget("o_favorite")),
				     playlist_has(PL_FAVORITED, track));
}

static void on_change_state(GstState state)
{
	if (state == GST_STATE_PLAYING) {
		gtk_widget_hide(gui_builder_widget("o_play"));
		gtk_widget_show(gui_builder_widget("o_pause"));
	} else {
		gtk_widget_show(gui_builder_widget("o_play"));
		gtk_widget_hide(gui_builder_widget("o_pause"));
	}
}

static void on_config_pause(int n)
{
	if (n == -1)
		gtk_toggle_button_set_active(o_enabled, false);
	else {
		gtk_spin_button_set_value(o_count, n);
		gtk_toggle_button_set_active(o_enabled, true);
	}
}


struct audio_ops audio_ops = {
	on_load,
	on_change_state,
	on_config_pause,
};


static bool on_seek(Gtk::ScrollType type, double value)
{
	audio_seek(value);
	return true;
}

static void on_pause_count()
{
	gtk_toggle_button_set_active(o_enabled, true);
	audio_pause_after(gtk_spin_button_get_value(o_count));
}

static void on_pause_enabled()
{
	if (!gtk_toggle_button_get_active(o_enabled))
		audio_pause_after(-1);
	else
		audio_pause_after(gtk_spin_button_get_value(o_count));
}

static bool on_timeout()
{
	gtk_adjustment_set_upper(o_progress, audio_duration());
	gtk_adjustment_set_value(o_progress, audio_position());
	__audio_set_time_label("o_position", audio_position() / GST_SECOND);
	return true;
}

void gst :: init_pre()
{
	o_seek  = GTK_SCALE(gui_builder_widget("o_seek"));

	o_count   = GTK_SPIN_BUTTON(gui_builder_widget("o_pause_count"));
	o_enabled = GTK_TOGGLE_BUTTON(gui_builder_widget("o_pause_enabled"));
	o_progress = GTK_ADJUSTMENT(gui_builder_object("o_progress"));

	g_signal_connect(o_seek, "change-value", G_CALLBACK(on_seek), NULL);

	g_signal_connect(o_count, "changed", G_CALLBACK(on_pause_count), NULL);
	g_signal_connect(o_enabled, "toggled", G_CALLBACK(on_pause_enabled), NULL);
}

void gst :: init()
{
	Glib :: signal_timeout().connect(sigc::ptr_fun(on_timeout), 500);
}