gtk2/gtk/gtkvideo.c
2018-04-26 17:59:42 +02:00

800 lines
20 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 "gtkvideo.h"
#include "gtkeventcontrollermotion.h"
#include "gtkimage.h"
#include "gtkintl.h"
#include "gtkmediacontrols.h"
#include "gtkmediafile.h"
#include "gtkrevealer.h"
/**
* SECTION:gtkvideo
* @title: GtkVideo
* @short_description: A widget for displaying video
*
* GtkVideo is a widget to show a #GtkMediaStream.
*/
struct _GtkVideo
{
GtkWidget parent_instance;
GFile *file;
GtkMediaStream *media_stream;
GtkWidget *box;
GtkWidget *video_image;
GtkWidget *overlay_icon;
GtkWidget *controls_revealer;
GtkWidget *controls;
guint controls_hide_source;
guint autoplay : 1;
guint loop : 1;
};
enum
{
PROP_0,
PROP_AUTOPLAY,
PROP_FILE,
PROP_LOOP,
PROP_MEDIA_STREAM,
N_PROPS
};
G_DEFINE_TYPE (GtkVideo, gtk_video, GTK_TYPE_WIDGET)
static GParamSpec *properties[N_PROPS] = { NULL, };
static gboolean
gtk_video_hide_controls (gpointer data)
{
GtkVideo *self = data;
gtk_revealer_set_reveal_child (GTK_REVEALER (self->controls_revealer), FALSE);
self->controls_hide_source = 0;
return G_SOURCE_REMOVE;
}
static void
gtk_video_motion (GtkEventControllerMotion *motion,
double x,
double y,
GtkVideo *self)
{
gtk_revealer_set_reveal_child (GTK_REVEALER (self->controls_revealer), TRUE);
if (self->controls_hide_source)
g_source_remove (self->controls_hide_source);
self->controls_hide_source = g_timeout_add (5 * 1000,
gtk_video_hide_controls,
self);
}
static void
gtk_video_measure (GtkWidget *widget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline)
{
GtkVideo *self = GTK_VIDEO (widget);
gtk_widget_measure (self->box,
orientation,
for_size,
minimum, natural,
minimum_baseline, natural_baseline);
}
static void
gtk_video_size_allocate (GtkWidget *widget,
const GtkAllocation *allocation,
int baseline)
{
GtkVideo *self = GTK_VIDEO (widget);
gtk_widget_size_allocate (self->box, allocation, baseline);
}
static void
gtk_video_realize (GtkWidget *widget)
{
GtkVideo *self = GTK_VIDEO (widget);
GTK_WIDGET_CLASS (gtk_video_parent_class)->realize (widget);
if (self->media_stream)
gtk_media_stream_realize (self->media_stream, gtk_widget_get_surface (GTK_WIDGET (self)));
if (self->file)
gtk_media_file_set_file (GTK_MEDIA_FILE (self->media_stream), self->file);
}
static void
gtk_video_unrealize (GtkWidget *widget)
{
GtkVideo *self = GTK_VIDEO (widget);
if (self->media_stream)
gtk_media_stream_unrealize (self->media_stream, gtk_widget_get_surface (GTK_WIDGET (self)));
GTK_WIDGET_CLASS (gtk_video_parent_class)->unrealize (widget);
}
static void
gtk_video_map (GtkWidget *widget)
{
GtkVideo *self = GTK_VIDEO (widget);
GTK_WIDGET_CLASS (gtk_video_parent_class)->map (widget);
if (self->autoplay && self->media_stream)
gtk_media_stream_play (self->media_stream);
}
static void
gtk_video_unmap (GtkWidget *widget)
{
GtkVideo *self = GTK_VIDEO (widget);
if (self->controls_hide_source)
{
g_source_remove (self->controls_hide_source);
self->controls_hide_source = 0;
gtk_revealer_set_reveal_child (GTK_REVEALER (self->controls_revealer), FALSE);
}
/* XXX: pause video here? */
GTK_WIDGET_CLASS (gtk_video_parent_class)->unmap (widget);
}
static void
gtk_video_dispose (GObject *object)
{
GtkVideo *self = GTK_VIDEO (object);
gtk_video_set_media_stream (self, NULL);
g_clear_pointer (&self->box, gtk_widget_unparent);
G_OBJECT_CLASS (gtk_video_parent_class)->dispose (object);
}
static void
gtk_video_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GtkVideo *self = GTK_VIDEO (object);
switch (property_id)
{
case PROP_AUTOPLAY:
g_value_set_boolean (value, self->autoplay);
break;
case PROP_FILE:
g_value_set_object (value, self->file);
break;
case PROP_LOOP:
g_value_set_boolean (value, self->loop);
break;
case PROP_MEDIA_STREAM:
g_value_set_object (value, self->media_stream);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gtk_video_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GtkVideo *self = GTK_VIDEO (object);
switch (property_id)
{
case PROP_AUTOPLAY:
gtk_video_set_autoplay (self, g_value_get_boolean (value));
break;
case PROP_FILE:
gtk_video_set_file (self, g_value_get_object (value));
break;
case PROP_LOOP:
gtk_video_set_loop (self, g_value_get_boolean (value));
break;
case PROP_MEDIA_STREAM:
gtk_video_set_media_stream (self, g_value_get_object (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gtk_video_class_init (GtkVideoClass *klass)
{
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
widget_class->measure = gtk_video_measure;
widget_class->size_allocate = gtk_video_size_allocate;
widget_class->realize = gtk_video_realize;
widget_class->unrealize = gtk_video_unrealize;
widget_class->map = gtk_video_map;
widget_class->unmap = gtk_video_unmap;
gobject_class->dispose = gtk_video_dispose;
gobject_class->get_property = gtk_video_get_property;
gobject_class->set_property = gtk_video_set_property;
/**
* GtkVideo:autoplay:
*
* If the video should automatically begin playing.
*/
properties[PROP_AUTOPLAY] =
g_param_spec_boolean ("autoplay",
P_("Autoplay"),
P_("If playback should begin automatically"),
FALSE,
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
/**
* GtkVideo:file:
*
* The file played by this video if the video is playing a file.
*/
properties[PROP_FILE] =
g_param_spec_object ("file",
P_("File"),
P_("The video file played back"),
G_TYPE_FILE,
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
/**
* GtkVideo:loop:
*
* If new media files should be set to loop.
*/
properties[PROP_LOOP] =
g_param_spec_boolean ("loop",
P_("Loop"),
P_("If new media streams should be set to loop"),
FALSE,
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
/**
* GtkVideo:media-stream:
*
* The media-stream played
*/
properties[PROP_MEDIA_STREAM] =
g_param_spec_object ("media-stream",
P_("Media Stream"),
P_("The media stream played"),
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/gtkvideo.ui");
gtk_widget_class_bind_template_child (widget_class, GtkVideo, box);
gtk_widget_class_bind_template_child (widget_class, GtkVideo, video_image);
gtk_widget_class_bind_template_child (widget_class, GtkVideo, overlay_icon);
gtk_widget_class_bind_template_child (widget_class, GtkVideo, controls);
gtk_widget_class_bind_template_child (widget_class, GtkVideo, controls_revealer);
gtk_widget_class_bind_template_callback (widget_class, gtk_video_motion);
gtk_widget_class_set_css_name (widget_class, I_("video"));
}
static void
gtk_video_init (GtkVideo *self)
{
gtk_widget_init_template (GTK_WIDGET (self));
gtk_widget_set_has_surface (GTK_WIDGET (self), FALSE);
}
/**
* gtk_video_new:
*
* Creates a new empty #GtkVideo.
*
* Returns: a new #GtkVideo
**/
GtkWidget *
gtk_video_new (void)
{
return g_object_new (GTK_TYPE_VIDEO, NULL);
}
/**
* gtk_video_new_for_media_stream:
* @stream: (allow-none): a #GtkMediaStream
*
* Creates a #GtkVideo to play back the given @stream.
*
* Returns: a new #GtkVideo
**/
GtkWidget *
gtk_video_new_for_media_stream (GtkMediaStream *stream)
{
g_return_val_if_fail (stream == NULL || GTK_IS_MEDIA_STREAM (stream), NULL);
return g_object_new (GTK_TYPE_VIDEO,
"media-stream", stream,
NULL);
}
/**
* gtk_video_new_for_file:
* @file: (allow-none): a #GFile
*
* Creates a #GtkVideo to play back the given @file.
*
* Returns: a new #GtkVideo
**/
GtkWidget *
gtk_video_new_for_file (GFile *file)
{
g_return_val_if_fail (file == NULL || G_IS_FILE (file), NULL);
return g_object_new (GTK_TYPE_VIDEO,
"file", file,
NULL);
}
/**
* gtk_video_new_for_filename:
* @filename: (allow-none): filename to play back
*
* Creates a #GtkVideo to play back the given @filename.
*
* This is a utility function that calls gtk_video_new_for_file(),
*
* Returns: a new #GtkVideo
**/
GtkWidget *
gtk_video_new_for_filename (const char *filename)
{
GtkWidget *result;
GFile *file;
if (filename)
file = g_file_new_for_path (filename);
else
file = NULL;
result = gtk_video_new_for_file (file);
if (file)
g_object_unref (file);
return result;
}
/**
* gtk_video_new_for_resource:
* @resource_path: (allow-none): resource path to play back
*
* Creates a #GtkVideo to play back the resource at the
* given @resource_path.
*
* This is a utility function that calls gtk_video_new_for_file(),
*
* Returns: a new #GtkVideo
**/
GtkWidget *
gtk_video_new_for_resource (const char *resource_path)
{
GtkWidget *result;
GFile *file;
if (resource_path)
{
char *uri, *escaped;
escaped = g_uri_escape_string (resource_path,
G_URI_RESERVED_CHARS_ALLOWED_IN_PATH, FALSE);
uri = g_strconcat ("resource://", escaped, NULL);
g_free (escaped);
file = g_file_new_for_uri (uri);
g_free (uri);
}
else
{
file = NULL;
}
result = gtk_video_new_for_file (file);
if (file)
g_object_unref (file);
return result;
}
/**
* gtk_video_get_media_stream:
* @self: a #GtkVideo
*
* Gets the media stream managed by @self or %NULL if none.
*
* Returns: (nullable) (transfer none): The media stream managed by @self
**/
GtkMediaStream *
gtk_video_get_media_stream (GtkVideo *self)
{
g_return_val_if_fail (GTK_IS_VIDEO (self), NULL);
return self->media_stream;
}
static void
gtk_video_update_overlay_icon (GtkVideo *self)
{
const char *icon_name;
const GError *error = NULL;
if (self->media_stream == NULL)
icon_name = "media-eject-symbolic";
else if ((error = gtk_media_stream_get_error (self->media_stream)))
icon_name = "dialog-error-symbolic";
else if (gtk_media_stream_get_ended (self->media_stream))
icon_name = "media-playlist-repeat-symbolic";
else
icon_name = "media-playback-start-symbolic";
gtk_image_set_from_icon_name (GTK_IMAGE (self->overlay_icon), icon_name);
if (error)
gtk_widget_set_tooltip_text (self->overlay_icon, error->message);
else
gtk_widget_set_tooltip_text (self->overlay_icon, NULL);
}
static void
gtk_video_update_ended (GtkVideo *self)
{
gtk_video_update_overlay_icon (self);
}
static void
gtk_video_update_error (GtkVideo *self)
{
gtk_video_update_overlay_icon (self);
}
static void
gtk_video_update_playing (GtkVideo *self)
{
gboolean playing;
if (self->media_stream != NULL)
playing = gtk_media_stream_get_playing (self->media_stream);
else
playing = FALSE;
gtk_widget_set_visible (self->overlay_icon, !playing);
}
static void
gtk_video_update_all (GtkVideo *self)
{
gtk_video_update_ended (self);
gtk_video_update_error (self);
gtk_video_update_playing (self);
}
static void
gtk_video_notify_cb (GtkMediaStream *stream,
GParamSpec *pspec,
GtkVideo *self)
{
if (g_str_equal (pspec->name, "ended"))
gtk_video_update_ended (self);
if (g_str_equal (pspec->name, "error"))
gtk_video_update_error (self);
if (g_str_equal (pspec->name, "playing"))
gtk_video_update_playing (self);
}
/**
* gtk_video_set_media_stream:
* @self: a #GtkVideo
* @stream: (allow-none): The media stream to play or %NULL to unset
*
* Sets the media stream to be played back. @self will take full control
* of managing the media stream. If you want to manage a media stream
* yourself, consider using a #GtkImage for display.
*
* If you want to display a file, consider using gtk_video_set_file()
* instead.
**/
void
gtk_video_set_media_stream (GtkVideo *self,
GtkMediaStream *stream)
{
g_return_if_fail (GTK_IS_VIDEO (self));
g_return_if_fail (stream == NULL || GTK_IS_MEDIA_STREAM (stream));
if (self->media_stream == stream)
return;
if (self->media_stream)
{
g_signal_handlers_disconnect_by_func (self->media_stream,
gtk_video_notify_cb,
self);
if (gtk_widget_get_realized (GTK_WIDGET (self)))
gtk_media_stream_unrealize (self->media_stream, gtk_widget_get_surface (GTK_WIDGET (self)));
g_object_unref (self->media_stream);
self->media_stream = NULL;
}
if (stream)
{
self->media_stream = g_object_ref (stream);
gtk_media_stream_set_loop (stream, self->loop);
if (gtk_widget_get_realized (GTK_WIDGET (self)))
gtk_media_stream_realize (stream, gtk_widget_get_surface (GTK_WIDGET (self)));
g_signal_connect (self->media_stream,
"notify",
G_CALLBACK (gtk_video_notify_cb),
self);
if (self->autoplay)
gtk_media_stream_play (stream);
}
gtk_media_controls_set_media_stream (GTK_MEDIA_CONTROLS (self->controls), stream);
gtk_image_set_from_paintable (GTK_IMAGE (self->video_image), GDK_PAINTABLE (stream));
gtk_video_update_all (self);
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_MEDIA_STREAM]);
}
/**
* gtk_video_get_file:
* @self: a #GtkVideo
*
* Gets the file played by @self or %NULL if not playing back
* a file.
*
* Returns: (nullable) (transfer none): The file played by @self
**/
GFile *
gtk_video_get_file (GtkVideo *self)
{
g_return_val_if_fail (GTK_IS_VIDEO (self), NULL);
return self->file;
}
/**
* gtk_video_set_file:
* @self: a #GtkVideo
* @file: (allow-none): the file to play
*
* Makes @self play the given @file.
**/
void
gtk_video_set_file (GtkVideo *self,
GFile *file)
{
g_return_if_fail (GTK_IS_VIDEO (self));
g_return_if_fail (file == NULL || G_IS_FILE (file));
if (!g_set_object (&self->file, file))
return;
g_object_freeze_notify (G_OBJECT (self));
if (file)
{
GtkMediaStream *stream;
stream = gtk_media_file_new ();
gtk_video_set_media_stream (self, stream);
if (gtk_widget_get_realized (GTK_WIDGET (self)))
gtk_media_file_set_file (GTK_MEDIA_FILE (stream), file);
g_object_unref (stream);
}
else
{
gtk_video_set_media_stream (self, NULL);
}
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_FILE]);
g_object_thaw_notify (G_OBJECT (self));
}
/**
* gtk_video_set_filename:
* @self: a #GtkVideo
* @filename: (allow-none): the filename to play
*
* Makes @self play the given @filename.
*
* This is a utility function that calls gtk_video_set_file(),
**/
void
gtk_video_set_filename (GtkVideo *self,
const char *filename)
{
GFile *file;
g_return_if_fail (GTK_IS_VIDEO (self));
if (filename)
file = g_file_new_for_path (filename);
else
file = NULL;
gtk_video_set_file (self, file);
if (file)
g_object_unref (file);
}
/**
* gtk_video_set_resource:
* @self: a #GtkVideo
* @resource_path: (allow-none): the resource to set
*
* Makes @self play the resource at the given @resource_path.
*
* This is a utility function that calls gtk_video_set_file(),
**/
void
gtk_video_set_resource (GtkVideo *self,
const char *resource_path)
{
GFile *file;
g_return_if_fail (GTK_IS_VIDEO (self));
if (resource_path)
{
char *uri, *escaped;
escaped = g_uri_escape_string (resource_path,
G_URI_RESERVED_CHARS_ALLOWED_IN_PATH, FALSE);
uri = g_strconcat ("resource://", escaped, NULL);
g_free (escaped);
file = g_file_new_for_uri (uri);
g_free (uri);
}
else
{
file = NULL;
}
gtk_video_set_file (self, file);
if (file)
g_object_unref (file);
}
/**
* gtk_video_get_autoplay:
* @self: a #GtkVideo
*
* Returns %TRUE if videos have been set to loop via gtk_video_set_loop().
*
* Returns: %TRUE if streams should autoplay
**/
gboolean
gtk_video_get_autoplay (GtkVideo *self)
{
g_return_val_if_fail (GTK_IS_VIDEO (self), FALSE);
return self->autoplay;
}
/**
* gtk_video_set_autoplay:
* @self: a #GtkVideo
* @autoplay: whether media streams should autoplay
*
* Sets whether @self automatically starts playback when it becomes visible
* or when a new file gets loaded.
**/
void
gtk_video_set_autoplay (GtkVideo *self,
gboolean autoplay)
{
g_return_if_fail (GTK_IS_VIDEO (self));
if (self->autoplay == autoplay)
return;
self->autoplay = autoplay;
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_AUTOPLAY]);
}
/**
* gtk_video_get_loop:
* @self: a #GtkVideo
*
* Returns %TRUE if videos have been set to loop via gtk_video_set_loop().
*
* Returns: %TRUE if streams should loop
**/
gboolean
gtk_video_get_loop (GtkVideo *self)
{
g_return_val_if_fail (GTK_IS_VIDEO (self), FALSE);
return self->loop;
}
/**
* gtk_video_set_loop:
* @self: a #GtkVideo
* @loop: whether media streams should loop
*
* Sets whether new files loaded by @self should be set to loop.
**/
void
gtk_video_set_loop (GtkVideo *self,
gboolean loop)
{
g_return_if_fail (GTK_IS_VIDEO (self));
if (self->loop == loop)
return;
self->loop = loop;
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_LOOP]);
}