gtk2/gtk/gtkmediacontrols.c
2020-05-20 16:07:50 -04:00

522 lines
16 KiB
C

/*
* Copyright © 2018 Benjamin Otte
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
* Authors: Benjamin Otte <otte@gnome.org>
*/
#include "config.h"
#include "gtkmediacontrols.h"
#include "gtkadjustment.h"
#include "gtkbutton.h"
#include "gtkintl.h"
#include "gtklabel.h"
#include "gtkwidgetprivate.h"
/**
* SECTION:gtkmediacontrols
* @title: GtkMediaControls
* @short_description: A widget showing controls for a media stream
* @see_also: #GtkVideo
*
* GtkMediaControls is a widget to show controls for a #GtkMediaStream
* and giving users a way to use it.
*/
struct _GtkMediaControls
{
GtkWidget parent_instance;
GtkMediaStream *stream;
GtkAdjustment *time_adjustment;
GtkAdjustment *volume_adjustment;
GtkWidget *box;
GtkWidget *play_button;
GtkWidget *time_box;
GtkWidget *time_label;
GtkWidget *seek_scale;
GtkWidget *duration_label;
GtkWidget *volume_button;
};
enum
{
PROP_0,
PROP_MEDIA_STREAM,
N_PROPS
};
G_DEFINE_TYPE (GtkMediaControls, gtk_media_controls, GTK_TYPE_WIDGET)
static GParamSpec *properties[N_PROPS] = { NULL, };
/* FIXME: Remove
* See https://bugzilla.gnome.org/show_bug.cgi?id=679850 */
static char *
totem_time_to_string (gint64 usecs,
gboolean remaining,
gboolean force_hour)
{
int sec, min, hour, _time;
_time = (int) (usecs / G_USEC_PER_SEC);
/* When calculating the remaining time,
* we want to make sure that:
* current time + time remaining = total run time */
if (remaining)
_time++;
sec = _time % 60;
_time = _time - sec;
min = (_time % (60*60)) / 60;
_time = _time - (min * 60);
hour = _time / (60*60);
if (hour > 0 || force_hour) {
if (!remaining) {
/* hour:minutes:seconds */
/* Translators: This is a time format, like "9:05:02" for 9
* hours, 5 minutes, and 2 seconds. You may change ":" to
* the separator that your locale uses or use "%Id" instead
* of "%d" if your locale uses localized digits.
*/
return g_strdup_printf (C_("long time format", "%d:%02d:%02d"), hour, min, sec);
} else {
/* -hour:minutes:seconds */
/* Translators: This is a time format, like "-9:05:02" for 9
* hours, 5 minutes, and 2 seconds playback remaining. You may
* change ":" to the separator that your locale uses or use
* "%Id" instead of "%d" if your locale uses localized digits.
*/
return g_strdup_printf (C_("long time format", "-%d:%02d:%02d"), hour, min, sec);
}
}
if (remaining) {
/* -minutes:seconds */
/* Translators: This is a time format, like "-5:02" for 5
* minutes and 2 seconds playback remaining. You may change
* ":" to the separator that your locale uses or use "%Id"
* instead of "%d" if your locale uses localized digits.
*/
return g_strdup_printf (C_("short time format", "-%d:%02d"), min, sec);
}
/* minutes:seconds */
/* Translators: This is a time format, like "5:02" for 5
* minutes and 2 seconds. You may change ":" to the
* separator that your locale uses or use "%Id" instead of
* "%d" if your locale uses localized digits.
*/
return g_strdup_printf (C_("short time format", "%d:%02d"), min, sec);
}
static void
time_adjustment_changed (GtkAdjustment *adjustment,
GtkMediaControls *controls)
{
if (controls->stream == NULL)
return;
/* We just updated the adjustment and it's correct now */
if (gtk_adjustment_get_value (adjustment) == (double) gtk_media_stream_get_timestamp (controls->stream) / G_USEC_PER_SEC)
return;
gtk_media_stream_seek (controls->stream,
gtk_adjustment_get_value (adjustment) * G_USEC_PER_SEC + 0.5);
}
static void
volume_adjustment_changed (GtkAdjustment *adjustment,
GtkMediaControls *controls)
{
if (controls->stream == NULL)
return;
/* We just updated the adjustment and it's correct now */
if (gtk_adjustment_get_value (adjustment) == gtk_media_stream_get_volume (controls->stream))
return;
gtk_media_stream_set_muted (controls->stream, gtk_adjustment_get_value (adjustment) == 0.0);
gtk_media_stream_set_volume (controls->stream, gtk_adjustment_get_value (adjustment));
}
static void
play_button_clicked (GtkWidget *button,
GtkMediaControls *controls)
{
if (controls->stream == NULL)
return;
gtk_media_stream_set_playing (controls->stream,
!gtk_media_stream_get_playing (controls->stream));
}
static void
gtk_media_controls_measure (GtkWidget *widget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline)
{
GtkMediaControls *controls = GTK_MEDIA_CONTROLS (widget);
gtk_widget_measure (controls->box,
orientation,
for_size,
minimum, natural,
minimum_baseline, natural_baseline);
}
static void
gtk_media_controls_size_allocate (GtkWidget *widget,
int width,
int height,
int baseline)
{
GtkMediaControls *controls = GTK_MEDIA_CONTROLS (widget);
gtk_widget_size_allocate (controls->box,
&(GtkAllocation) {
0, 0,
width, height
}, baseline);
}
static void
gtk_media_controls_dispose (GObject *object)
{
GtkMediaControls *controls = GTK_MEDIA_CONTROLS (object);
gtk_media_controls_set_media_stream (controls, NULL);
g_clear_pointer (&controls->box, gtk_widget_unparent);
G_OBJECT_CLASS (gtk_media_controls_parent_class)->dispose (object);
}
static void
gtk_media_controls_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GtkMediaControls *controls = GTK_MEDIA_CONTROLS (object);
switch (property_id)
{
case PROP_MEDIA_STREAM:
g_value_set_object (value, controls->stream);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gtk_media_controls_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GtkMediaControls *controls = GTK_MEDIA_CONTROLS (object);
switch (property_id)
{
case PROP_MEDIA_STREAM:
gtk_media_controls_set_media_stream (controls, g_value_get_object (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gtk_media_controls_class_init (GtkMediaControlsClass *klass)
{
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
widget_class->measure = gtk_media_controls_measure;
widget_class->size_allocate = gtk_media_controls_size_allocate;
gobject_class->dispose = gtk_media_controls_dispose;
gobject_class->get_property = gtk_media_controls_get_property;
gobject_class->set_property = gtk_media_controls_set_property;
/**
* GtkMediaControls:media-stream:
*
* The media-stream managed by this object or %NULL if none.
*/
properties[PROP_MEDIA_STREAM] =
g_param_spec_object ("media-stream",
P_("Media Stream"),
P_("The media stream managed"),
GTK_TYPE_MEDIA_STREAM,
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
g_object_class_install_properties (gobject_class, N_PROPS, properties);
gtk_widget_class_set_template_from_resource (widget_class, "/org/gtk/libgtk/ui/gtkmediacontrols.ui");
gtk_widget_class_bind_template_child (widget_class, GtkMediaControls, time_adjustment);
gtk_widget_class_bind_template_child (widget_class, GtkMediaControls, volume_adjustment);
gtk_widget_class_bind_template_child (widget_class, GtkMediaControls, box);
gtk_widget_class_bind_template_child (widget_class, GtkMediaControls, play_button);
gtk_widget_class_bind_template_child (widget_class, GtkMediaControls, time_box);
gtk_widget_class_bind_template_child (widget_class, GtkMediaControls, time_label);
gtk_widget_class_bind_template_child (widget_class, GtkMediaControls, seek_scale);
gtk_widget_class_bind_template_child (widget_class, GtkMediaControls, duration_label);
gtk_widget_class_bind_template_child (widget_class, GtkMediaControls, volume_button);
gtk_widget_class_bind_template_callback (widget_class, play_button_clicked);
gtk_widget_class_bind_template_callback (widget_class, time_adjustment_changed);
gtk_widget_class_bind_template_callback (widget_class, volume_adjustment_changed);
gtk_widget_class_set_css_name (widget_class, I_("controls"));
}
static void
gtk_media_controls_init (GtkMediaControls *controls)
{
gtk_widget_init_template (GTK_WIDGET (controls));
}
/**
* gtk_media_controls_new:
* @stream: (allow-none) (transfer none): a #GtkMediaStream to
* manage or %NULL for none.
*
* Creates a new #GtkMediaControls managing the @stream passed to it.
*
* Returns: a new #GtkMediaControls
**/
GtkWidget *
gtk_media_controls_new (GtkMediaStream *stream)
{
return g_object_new (GTK_TYPE_MEDIA_CONTROLS,
"media-stream", stream,
NULL);
}
/**
* gtk_media_controls_get_media_stream:
* @controls: a #GtkMediaControls
*
* Gets the media stream managed by @controls or %NULL if none.
*
* Returns: (nullable) (transfer none): The media stream managed by @controls
**/
GtkMediaStream *
gtk_media_controls_get_media_stream (GtkMediaControls *controls)
{
g_return_val_if_fail (GTK_IS_MEDIA_CONTROLS (controls), NULL);
return controls->stream;
}
static void
update_timestamp (GtkMediaControls *controls)
{
gint64 timestamp, duration;
char *time_string;
if (controls->stream)
{
timestamp = gtk_media_stream_get_timestamp (controls->stream);
duration = gtk_media_stream_get_duration (controls->stream);
}
else
{
timestamp = 0;
duration = 0;
}
time_string = totem_time_to_string (timestamp, FALSE, FALSE);
gtk_label_set_text (GTK_LABEL (controls->time_label), time_string);
g_free (time_string);
if (duration > 0)
{
time_string = totem_time_to_string (duration > timestamp ? duration - timestamp : 0, TRUE, FALSE);
gtk_label_set_text (GTK_LABEL (controls->duration_label), time_string);
g_free (time_string);
gtk_adjustment_set_value (controls->time_adjustment, (double) timestamp / G_USEC_PER_SEC);
}
}
static void
update_duration (GtkMediaControls *controls)
{
gint64 timestamp, duration;
char *time_string;
if (controls->stream)
{
timestamp = gtk_media_stream_get_timestamp (controls->stream);
duration = gtk_media_stream_get_duration (controls->stream);
}
else
{
timestamp = 0;
duration = 0;
}
time_string = totem_time_to_string (duration > timestamp ? duration - timestamp : 0, TRUE, FALSE);
gtk_label_set_text (GTK_LABEL (controls->duration_label), time_string);
gtk_widget_set_visible (controls->duration_label, duration > 0);
g_free (time_string);
gtk_adjustment_set_upper (controls->time_adjustment,
gtk_adjustment_get_page_size (controls->time_adjustment)
+ (double) duration / G_USEC_PER_SEC);
gtk_adjustment_set_value (controls->time_adjustment, (double) timestamp / G_USEC_PER_SEC);
}
static void
update_playing (GtkMediaControls *controls)
{
gboolean playing;
const char *icon_name;
if (controls->stream)
playing = gtk_media_stream_get_playing (controls->stream);
else
playing = FALSE;
if (playing)
icon_name = "media-playback-pause-symbolic";
else
icon_name = "media-playback-start-symbolic";
gtk_button_set_icon_name (GTK_BUTTON (controls->play_button), icon_name);
}
static void
update_seekable (GtkMediaControls *controls)
{
gboolean seekable;
if (controls->stream)
seekable = gtk_media_stream_is_seekable (controls->stream);
else
seekable = FALSE;
gtk_widget_set_sensitive (controls->seek_scale, seekable);
}
static void
update_volume (GtkMediaControls *controls)
{
double volume;
if (controls->stream == NULL)
volume = 1.0;
else if (gtk_media_stream_get_muted (controls->stream))
volume = 0.0;
else
volume = gtk_media_stream_get_volume (controls->stream);
gtk_adjustment_set_value (controls->volume_adjustment, volume);
gtk_widget_set_sensitive (controls->volume_button,
controls->stream == NULL ||
gtk_media_stream_has_audio (controls->stream));
}
static void
update_all (GtkMediaControls *controls)
{
update_timestamp (controls);
update_duration (controls);
update_playing (controls);
update_seekable (controls);
update_volume (controls);
}
static void
gtk_media_controls_notify_cb (GtkMediaStream *stream,
GParamSpec *pspec,
GtkMediaControls *controls)
{
if (g_str_equal (pspec->name, "timestamp"))
update_timestamp (controls);
else if (g_str_equal (pspec->name, "duration"))
update_duration (controls);
else if (g_str_equal (pspec->name, "playing"))
update_playing (controls);
else if (g_str_equal (pspec->name, "seekable"))
update_seekable (controls);
else if (g_str_equal (pspec->name, "muted"))
update_volume (controls);
else if (g_str_equal (pspec->name, "volume"))
update_volume (controls);
else if (g_str_equal (pspec->name, "has-audio"))
update_volume (controls);
}
/**
* gtk_media_controls_set_media_stream:
* @controls: a #GtkMediaControls widget
* @stream: (nullable): a #GtkMediaStream, or %NULL
*
* Sets the stream that is controlled by @controls.
*/
void
gtk_media_controls_set_media_stream (GtkMediaControls *controls,
GtkMediaStream *stream)
{
g_return_if_fail (GTK_IS_MEDIA_CONTROLS (controls));
g_return_if_fail (stream == NULL || GTK_IS_MEDIA_STREAM (stream));
if (controls->stream == stream)
return;
if (controls->stream)
{
g_signal_handlers_disconnect_by_func (controls->stream,
gtk_media_controls_notify_cb,
controls);
g_object_unref (controls->stream);
controls->stream = NULL;
}
if (stream)
{
controls->stream = g_object_ref (stream);
g_signal_connect (controls->stream,
"notify",
G_CALLBACK (gtk_media_controls_notify_cb),
controls);
}
update_all (controls);
gtk_widget_set_sensitive (controls->box, stream != NULL);
g_object_notify_by_pspec (G_OBJECT (controls), properties[PROP_MEDIA_STREAM]);
}