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20f76fe86f
This method can be used for subclass to override the default behaviour for child lookup. This vmethod can be used for example in the case where you want the name of a child property to be 'overridden'. As an example in the GESTitleSource where we have a videotestsrc which has a 'foreground-color' property that is used in the TitleSource to set the background color of the title, this vmethod is now used to tweak the name passed as parameter to rename "background" to "foreground-backend" making our API understandable. API: GESTrackElement::lookup_child https://bugzilla.gnome.org/show_bug.cgi?id=727880
113 lines
3.5 KiB
C
113 lines
3.5 KiB
C
/* GStreamer Editing Services
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* Copyright (C) 2010 Brandon Lewis <brandon.lewis@collabora.co.uk>
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* 2010 Nokia Corporation
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef _GES_TITLE_SOURCE
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#define _GES_TITLE_SOURCE
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#include <glib-object.h>
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#include <ges/ges-types.h>
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#include <ges/ges-video-source.h>
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G_BEGIN_DECLS
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#define GES_TYPE_TITLE_SOURCE ges_title_source_get_type()
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#define GES_TITLE_SOURCE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST ((obj), GES_TYPE_TITLE_SOURCE, GESTitleSource))
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#define GES_TITLE_SOURCE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST ((klass), GES_TYPE_TITLE_SOURCE, GESTitleSourceClass))
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#define GES_IS_TITLE_SOURCE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GES_TYPE_TITLE_SOURCE))
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#define GES_IS_TITLE_SOURCE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE ((klass), GES_TYPE_TITLE_SOURCE))
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#define GES_TITLE_SOURCE_GET_CLASS(obj) \
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(G_TYPE_INSTANCE_GET_CLASS ((obj), GES_TYPE_TITLE_SOURCE, GESTitleSourceClass))
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typedef struct _GESTitleSourcePrivate GESTitleSourcePrivate;
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/**
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* GESTitleSource:
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*
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*/
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struct _GESTitleSource {
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GESVideoSource parent;
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/*< private >*/
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GESTitleSourcePrivate *priv;
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/* Padding for API extension */
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gpointer _ges_reserved[GES_PADDING];
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};
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/**
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* GESTitleSourceClass:
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* @parent_class: parent class
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*/
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struct _GESTitleSourceClass {
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GESVideoSourceClass parent_class;
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/*< private >*/
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GRegex * cleanup_children_prop_names;
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/* Padding for API extension */
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gpointer _ges_reserved[GES_PADDING - 1];
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};
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GType ges_title_source_get_type (void);
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void ges_title_source_set_text (GESTitleSource *self,
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const gchar *text);
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void ges_title_source_set_font_desc (GESTitleSource *self,
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const gchar *font_desc);
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void ges_title_source_set_halignment (GESTitleSource *self,
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GESTextHAlign halign);
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void ges_title_source_set_valignment (GESTitleSource *self,
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GESTextVAlign valign);
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void ges_title_source_set_text_color (GESTitleSource *self,
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guint32 color);
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void ges_title_source_set_background_color (GESTitleSource *self,
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guint32 color);
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void ges_title_source_set_xpos (GESTitleSource *self,
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gdouble position);
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void ges_title_source_set_ypos (GESTitleSource *self,
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gdouble position);
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const gchar *ges_title_source_get_text (GESTitleSource *source);
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const gchar *ges_title_source_get_font_desc (GESTitleSource *source);
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GESTextHAlign ges_title_source_get_halignment (GESTitleSource *source);
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GESTextVAlign ges_title_source_get_valignment (GESTitleSource *source);
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const guint32 ges_title_source_get_text_color (GESTitleSource *source);
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const guint32 ges_title_source_get_background_color (GESTitleSource *source);
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const gdouble ges_title_source_get_xpos (GESTitleSource *source);
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const gdouble ges_title_source_get_ypos (GESTitleSource *source);
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G_END_DECLS
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#endif /* _GES_TITLE_SOURCE */
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