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media: Add an API to specify which font should be used for subtitles

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Allow the user of the ClutterMedia interface to specify a Pango font
description to display subtitles. Even if the underlying implementation
of the interface does not natively use Pange, it must be capable of
parsing the grammar that pango_font_description_from_string() accepts.
This commit is contained in:
Damien Lespiau 2010-01-06 11:48:46 +00:00
parent 8e9f56c411
commit 4c1231c7fe
3 changed files with 90 additions and 21 deletions
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64
clutter/clutter-media.c
View File

@ -123,6 +123,22 @@ clutter_media_base_init (gpointer g_iface)
CLUTTER_PARAM_READWRITE);
g_object_interface_install_property (g_iface, pspec);
/**
* ClutterMedia:subtitle-font-name:
*
* The font used to display subtitles. The font description has to
* follow the same grammar as the one recognized by
* pango_font_description_from_string().
*
* Since: 1.2
*/
pspec = g_param_spec_string ("subtitle-font-name",
"Subtitle Font Name",
"The font used to display subtitles",
NULL,
CLUTTER_PARAM_READWRITE);
g_object_interface_install_property (g_iface, pspec);
/**
* ClutterMedia:audio-volume:
*
@ -403,6 +419,54 @@ clutter_media_get_subtitle_uri (ClutterMedia *media)
return retval;
}
/**
* clutter_media_set_subtitle_font_name:
* @media: a #ClutterMedia
* @font_name: a font name, or %NULL to set the default font name
*
* Sets the font used by the subtitle renderer. The @font_name string must be
* either %NULL, which means that the default font name of the underlying
* implementation will be used; or must follow the grammar recognized by
* pango_font_description_from_string() like:
*
* |[
* clutter_media_set_subtitle_font_name (media, "Sans 24pt");
* ]|
*
* Since: 1.2
*/
void
clutter_media_set_subtitle_font_name (ClutterMedia *media,
const char *font_name)
{
g_return_if_fail (CLUTTER_IS_MEDIA (media));
g_object_set (G_OBJECT (media), "subtitle-font-name", font_name, NULL);
}
/**
* clutter_media_get_subtitle_font_name:
* @media: a #ClutterMedia
*
* Retrieves the font name currently used.
*
* Return value: a string containing the font name. Use g_free()
* to free the returned string
*
* Since: 1.2
*/
gchar *
clutter_media_get_subtitle_font_name (ClutterMedia *media)
{
gchar *retval = NULL;
g_return_val_if_fail (CLUTTER_IS_MEDIA(media), NULL);
g_object_get (G_OBJECT (media), "subtitle-font-name", &retval, NULL);
return retval;
}
/**
* clutter_media_set_audio_volume:
* @media: a #ClutterMedia

45
clutter/clutter-media.h
View File

@ -62,29 +62,32 @@ struct _ClutterMediaIface
const GError *error);
};
GType clutter_media_get_type (void) G_GNUC_CONST;
GType clutter_media_get_type (void) G_GNUC_CONST;
void clutter_media_set_uri (ClutterMedia *media,
const gchar *uri);
gchar * clutter_media_get_uri (ClutterMedia *media);
void clutter_media_set_filename (ClutterMedia *media,
const gchar *filename);
void clutter_media_set_uri (ClutterMedia *media,
const gchar *uri);
gchar * clutter_media_get_uri (ClutterMedia *media);
void clutter_media_set_filename (ClutterMedia *media,
const gchar *filename);
void clutter_media_set_playing (ClutterMedia *media,
gboolean playing);
gboolean clutter_media_get_playing (ClutterMedia *media);
void clutter_media_set_progress (ClutterMedia *media,
gdouble progress);
gdouble clutter_media_get_progress (ClutterMedia *media);
void clutter_media_set_subtitle_uri (ClutterMedia *media,
const gchar *uri);
gchar * clutter_media_get_subtitle_uri (ClutterMedia *media);
void clutter_media_set_audio_volume (ClutterMedia *media,
gdouble volume);
gdouble clutter_media_get_audio_volume (ClutterMedia *media);
gboolean clutter_media_get_can_seek (ClutterMedia *media);
gdouble clutter_media_get_buffer_fill (ClutterMedia *media);
gdouble clutter_media_get_duration (ClutterMedia *media);
void clutter_media_set_playing (ClutterMedia *media,
gboolean playing);
gboolean clutter_media_get_playing (ClutterMedia *media);
void clutter_media_set_progress (ClutterMedia *media,
gdouble progress);
gdouble clutter_media_get_progress (ClutterMedia *media);
void clutter_media_set_subtitle_uri (ClutterMedia *media,
const gchar *uri);
gchar * clutter_media_get_subtitle_uri (ClutterMedia *media);
void clutter_media_set_subtitle_font_name (ClutterMedia *media,
const char *font_name);
gchar * clutter_media_get_subtitle_font_name (ClutterMedia *media);
void clutter_media_set_audio_volume (ClutterMedia *media,
gdouble volume);
gdouble clutter_media_get_audio_volume (ClutterMedia *media);
gboolean clutter_media_get_can_seek (ClutterMedia *media);
gdouble clutter_media_get_buffer_fill (ClutterMedia *media);
gdouble clutter_media_get_duration (ClutterMedia *media);
G_END_DECLS

2
doc/reference/clutter/clutter-sections.txt
View File

@ -11,6 +11,8 @@ clutter_media_set_progress
clutter_media_get_progress
clutter_media_set_subtitle_uri
clutter_media_get_subtitle_uri
clutter_media_set_subtitle_font_name
clutter_media_get_subtitle_font_name
clutter_media_set_audio_volume
clutter_media_get_audio_volume
clutter_media_get_can_seek