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701 lines
20 KiB
C
701 lines
20 KiB
C
/* GStreamer Editing Services
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* Copyright (C) 2009 Edward Hervey <edward.hervey@collabora.co.uk>
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* 2009 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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/**
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* SECTION:gestitleclip
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* @title: GESTitleClip
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* @short_description: Render stand-alone titles in GESLayer.
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*
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* Renders the given text in the specified font, at specified position, and
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* with the specified background pattern.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "ges-internal.h"
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#include "ges-title-clip.h"
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#include "ges-source-clip.h"
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#include "ges-track-element.h"
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#include "ges-title-source.h"
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#include <string.h>
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#define DEFAULT_TEXT ""
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#define DEFAULT_FONT_DESC "Serif 36"
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#define GES_TITLE_CLIP_VALIGN_TYPE (ges_title_clip_valign_get_type())
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#define GES_TITLE_CLIP_HALIGN_TYPE (ges_title_clip_halign_get_type())
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struct _GESTitleClipPrivate
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{
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GSList *track_titles;
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};
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enum
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{
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PROP_0,
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PROP_TEXT,
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PROP_FONT_DESC,
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PROP_HALIGNMENT,
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PROP_VALIGNMENT,
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PROP_COLOR,
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PROP_BACKGROUND,
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PROP_XPOS,
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PROP_YPOS,
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};
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G_DEFINE_TYPE_WITH_PRIVATE (GESTitleClip, ges_title_clip, GES_TYPE_SOURCE_CLIP);
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static GESTrackElement
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* ges_title_clip_create_track_element (GESClip * clip, GESTrackType type);
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static void _child_added (GESContainer * container,
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GESTimelineElement * element);
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static void _child_removed (GESContainer * container,
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GESTimelineElement * element);
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static void
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ges_title_clip_get_property (GObject * object, guint property_id,
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GValue * value, GParamSpec * pspec)
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{
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GESTimelineElement *child, *tmpsrc = NULL;
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GESTitleClipPrivate *priv = GES_TITLE_CLIP (object)->priv;
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if (!priv->track_titles)
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child = tmpsrc = GES_TIMELINE_ELEMENT (ges_title_source_new ());
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else
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child = priv->track_titles->data;
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switch (property_id) {
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/* Falltrough all over */
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case PROP_TEXT:
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case PROP_FONT_DESC:
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case PROP_HALIGNMENT:
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case PROP_VALIGNMENT:
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case PROP_COLOR:
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case PROP_BACKGROUND:
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case PROP_XPOS:
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case PROP_YPOS:
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ges_timeline_element_get_child_property (child, pspec->name, value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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}
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if (tmpsrc)
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g_object_unref (tmpsrc);
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}
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static void
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ges_title_clip_set_property (GObject * object, guint property_id,
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const GValue * value, GParamSpec * pspec)
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{
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switch (property_id) {
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case PROP_TEXT:
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case PROP_FONT_DESC:
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case PROP_HALIGNMENT:
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case PROP_VALIGNMENT:
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case PROP_COLOR:
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case PROP_BACKGROUND:
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case PROP_XPOS:
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case PROP_YPOS:
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ges_timeline_element_set_child_property (GES_TIMELINE_ELEMENT (object),
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pspec->name, value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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}
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}
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static void
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ges_title_clip_dispose (GObject * object)
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{
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G_OBJECT_CLASS (ges_title_clip_parent_class)->dispose (object);
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}
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static void
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ges_title_clip_class_init (GESTitleClipClass * klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GESClipClass *clip_class = GES_CLIP_CLASS (klass);
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GESContainerClass *container_class = GES_CONTAINER_CLASS (klass);
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object_class->get_property = ges_title_clip_get_property;
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object_class->set_property = ges_title_clip_set_property;
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object_class->dispose = ges_title_clip_dispose;
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/**
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* GESTitleClip:text:
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*
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* The text to diplay
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*
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* Deprecated:1.6: use #ges_timeline_element_set_children_properties or
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* #ges_timeline_element_get_children_properties instead.
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* See #GESTitleSource for more information about exposed properties
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*/
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g_object_class_install_property (object_class, PROP_TEXT,
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g_param_spec_string ("text", "Text", "The text to display",
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DEFAULT_TEXT, G_PARAM_READWRITE | G_PARAM_CONSTRUCT |
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GES_PARAM_NO_SERIALIZATION));
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/**
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* GESTitleClip:font-desc:
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*
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* Pango font description string
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*
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* Deprecated:1.6: use #ges_timeline_element_set_children_properties or
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* #ges_timeline_element_get_children_properties instead.
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* See #GESTitleSource for more information about exposed properties
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*/
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_FONT_DESC,
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g_param_spec_string ("font-desc", "font description",
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"Pango font description of font to be used for rendering. "
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"See documentation of pango_font_description_from_string "
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"for syntax.", DEFAULT_FONT_DESC,
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G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS |
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GES_PARAM_NO_SERIALIZATION));
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/**
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* GESTitleClip:valignment:
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*
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* Vertical alignent of the text
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*
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* Deprecated:1.6: use #ges_timeline_element_set_children_properties or
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* #ges_timeline_element_get_children_properties instead.
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* See #GESTitleSource for more information about exposed properties
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*/
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_VALIGNMENT,
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g_param_spec_enum ("valignment", "vertical alignment",
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"Vertical alignment of the text", GES_TEXT_VALIGN_TYPE,
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DEFAULT_VALIGNMENT,
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G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS |
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GES_PARAM_NO_SERIALIZATION));
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/**
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* GESTitleClip:halignment:
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*
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* Horizontal alignment of the text
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*
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* Deprecated:1.6: use #ges_timeline_element_set_children_properties or
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* #ges_timeline_element_get_children_properties instead.
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* See #GESTitleSource for more information about exposed properties
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*/
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_HALIGNMENT,
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g_param_spec_enum ("halignment", "horizontal alignment",
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"Horizontal alignment of the text",
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GES_TEXT_HALIGN_TYPE, DEFAULT_HALIGNMENT,
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G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS |
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GES_PARAM_NO_SERIALIZATION));
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clip_class->create_track_element = ges_title_clip_create_track_element;
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container_class->child_added = _child_added;
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container_class->child_removed = _child_removed;
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/**
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* GESTitleClip:color:
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*
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* The color of the text
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*
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* Deprecated:1.6: use #ges_timeline_element_set_children_properties or
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* #ges_timeline_element_get_children_properties instead.
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* See #GESTitleSource for more information about exposed properties
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*/
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g_object_class_install_property (object_class, PROP_COLOR,
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g_param_spec_uint ("color", "Color", "The color of the text",
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0, G_MAXUINT32, G_MAXUINT32, G_PARAM_READWRITE | G_PARAM_CONSTRUCT |
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GES_PARAM_NO_SERIALIZATION));
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/**
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* GESTitleClip:background:
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*
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* The background of the text
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*
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* Deprecated:1.6: use #ges_timeline_element_set_children_properties or
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* #ges_timeline_element_get_children_properties instead.
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* See #GESTitleSource for more information about exposed properties
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*/
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g_object_class_install_property (object_class, PROP_BACKGROUND,
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g_param_spec_uint ("background", "Background",
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"The background of the text", 0, G_MAXUINT32, G_MAXUINT32,
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G_PARAM_READWRITE | G_PARAM_CONSTRUCT | GES_PARAM_NO_SERIALIZATION));
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/**
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* GESTitleClip:xpos:
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*
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* The horizontal position of the text
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*
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* Deprecated:1.6: use #ges_timeline_element_set_children_properties or
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* #ges_timeline_element_get_children_properties instead.
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* See #GESTitleSource for more information about exposed properties
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*/
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g_object_class_install_property (object_class, PROP_XPOS,
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g_param_spec_double ("xpos", "Xpos", "The horizontal position",
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0, 1, 0.5, G_PARAM_READWRITE | G_PARAM_CONSTRUCT
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| GES_PARAM_NO_SERIALIZATION));
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/**
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* GESTitleClip:ypos:
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*
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* The vertical position of the text
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*
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* Deprecated:1.6: use #ges_timeline_element_set_children_properties or
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* #ges_timeline_element_get_children_properties instead.
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* See #GESTitleSource for more information about exposed properties
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*/
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g_object_class_install_property (object_class, PROP_YPOS,
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g_param_spec_double ("ypos", "Ypos", "The vertical position",
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0, 1, 0.5, G_PARAM_READWRITE | G_PARAM_CONSTRUCT
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| GES_PARAM_NO_SERIALIZATION));
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}
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static void
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ges_title_clip_init (GESTitleClip * self)
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{
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self->priv = ges_title_clip_get_instance_private (self);
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GES_TIMELINE_ELEMENT (self)->duration = 0;
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/* Not 100% required since a new gobject's content will always be memzero'd */
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}
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/**
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* ges_title_clip_set_text:
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* @self: the #GESTitleClip* to set text on
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* @text: (nullable): the text to render. an internal copy of this text will be
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* made.
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*
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* Sets the text this clip will render.
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*
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* Deprecated:1.6: use #ges_timeline_element_set_children_properties instead.
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* See #GESTitleSource for more information about exposed properties
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*/
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void
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ges_title_clip_set_text (GESTitleClip * self, const gchar * text)
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{
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GSList *tmp;
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GST_DEBUG_OBJECT (self, "text:%s", text);
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for (tmp = self->priv->track_titles; tmp; tmp = tmp->next) {
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ges_timeline_element_set_child_properties (tmp->data, "text", text, NULL);
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}
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}
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/**
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* ges_title_clip_set_font_desc:
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* @self: the #GESTitleClip*
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* @font_desc: (nullable): the pango font description
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*
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* Sets the pango font description of the text.
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*
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* Deprecated:1.6: use #ges_timeline_element_set_children_properties instead.
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* See #GESTitleSource for more information about exposed properties
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*/
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void
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ges_title_clip_set_font_desc (GESTitleClip * self, const gchar * font_desc)
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{
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GSList *tmp;
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GST_DEBUG_OBJECT (self, "font_desc:%s", font_desc);
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for (tmp = self->priv->track_titles; tmp; tmp = tmp->next) {
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ges_timeline_element_set_child_properties (tmp->data,
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"font-desc", font_desc, NULL);
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}
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}
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/**
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* ges_title_clip_set_halignment:
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* @self: the #GESTitleClip* to set horizontal alignement of text on
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* @halign: #GESTextHAlign
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*
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* Sets the horizontal aligment of the text.
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*
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* Deprecated:1.6: use #ges_timeline_element_set_children_properties instead.
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* See #GESTitleSource for more information about exposed properties
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*/
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void
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ges_title_clip_set_halignment (GESTitleClip * self, GESTextHAlign halign)
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{
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GSList *tmp;
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GST_DEBUG_OBJECT (self, "halign:%d", halign);
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for (tmp = self->priv->track_titles; tmp; tmp = tmp->next) {
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ges_timeline_element_set_child_properties (tmp->data,
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"halignment", halign, NULL);
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}
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}
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/**
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* ges_title_clip_set_valignment:
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* @self: the #GESTitleClip* to set vertical alignement of text on
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* @valign: #GESTextVAlign
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*
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* Sets the vertical aligment of the text.
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*
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* Deprecated:1.6: use #ges_timeline_element_set_children_properties instead.
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* See #GESTitleSource for more information about exposed properties
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*/
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void
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ges_title_clip_set_valignment (GESTitleClip * self, GESTextVAlign valign)
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{
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GSList *tmp;
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GST_DEBUG_OBJECT (self, "valign:%d", valign);
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for (tmp = self->priv->track_titles; tmp; tmp = tmp->next) {
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ges_timeline_element_set_child_properties (tmp->data,
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"valignment", valign, NULL);
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}
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}
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/**
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* ges_title_clip_set_color:
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* @self: the #GESTitleClip* to set
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* @color: The color @self is being set to
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*
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* Sets the color of the text.
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*
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* Deprecated:1.6: use #ges_timeline_element_set_children_properties instead.
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* See #GESTitleSource for more information about exposed properties
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*/
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void
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ges_title_clip_set_color (GESTitleClip * self, guint32 color)
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{
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GSList *tmp;
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GST_DEBUG_OBJECT (self, "color:%d", color);
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for (tmp = self->priv->track_titles; tmp; tmp = tmp->next) {
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ges_timeline_element_set_child_properties (tmp->data, "color", color, NULL);
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}
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}
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/**
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* ges_title_clip_set_background:
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* @self: the #GESTitleClip* to set
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* @background: The color @self is being set to
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*
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* Sets the background of the text.
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*
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* Deprecated:1.6: use #ges_timeline_element_set_children_properties instead.
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* See #GESTitleSource for more information about exposed properties
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*/
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void
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ges_title_clip_set_background (GESTitleClip * self, guint32 background)
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{
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GSList *tmp;
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GST_DEBUG_OBJECT (self, "background:%d", background);
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for (tmp = self->priv->track_titles; tmp; tmp = tmp->next) {
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ges_timeline_element_set_child_properties (tmp->data,
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"foreground-color", background, NULL);
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}
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}
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/**
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* ges_title_clip_set_xpos:
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* @self: the #GESTitleClip* to set
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* @position: The horizontal position @self is being set to
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*
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* Sets the horizontal position of the text.
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*
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* Deprecated:1.6: use #ges_timeline_element_set_children_properties instead.
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* See #GESTitleSource for more information about exposed properties
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*/
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void
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ges_title_clip_set_xpos (GESTitleClip * self, gdouble position)
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{
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GSList *tmp;
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GST_DEBUG_OBJECT (self, "xpos:%f", position);
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for (tmp = self->priv->track_titles; tmp; tmp = tmp->next) {
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ges_timeline_element_set_child_properties (tmp->data, "xpos", position,
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NULL);
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}
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}
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/**
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* ges_title_clip_set_ypos:
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* @self: the #GESTitleClip* to set
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* @position: The vertical position @self is being set to
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*
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* Sets the vertical position of the text.
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*
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* Deprecated:1.6: use #ges_timeline_element_set_children_properties instead.
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* See #GESTitleSource for more information about exposed properties
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*/
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void
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ges_title_clip_set_ypos (GESTitleClip * self, gdouble position)
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{
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GSList *tmp;
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GST_DEBUG_OBJECT (self, "ypos:%f", position);
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for (tmp = self->priv->track_titles; tmp; tmp = tmp->next) {
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ges_timeline_element_set_child_properties (tmp->data, "ypos", position,
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NULL);
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}
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}
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/**
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* ges_title_clip_get_text:
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* @self: a #GESTitleClip
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*
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* Get the text currently set on @self.
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*
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* Returns: (transfer full) (nullable): The text currently set on @self.
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*
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* Deprecated:1.6: use #ges_timeline_element_get_children_properties instead.
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* See #GESTitleSource for more information about exposed properties
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*/
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const gchar *
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ges_title_clip_get_text (GESTitleClip * self)
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{
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gchar *text;
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ges_timeline_element_get_child_properties (self->priv->track_titles->data,
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"text", &text, NULL);
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return text;
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}
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/**
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* ges_title_clip_get_font_desc:
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* @self: a #GESTitleClip
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*
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* Get the pango font description used by @self.
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*
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* Returns: (transfer full) (nullable): The pango font description used by @self.
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*
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* Deprecated:1.6: use #ges_timeline_element_get_children_properties instead.
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* See #GESTitleSource for more information about exposed properties
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*/
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|
const char *
|
|
ges_title_clip_get_font_desc (GESTitleClip * self)
|
|
{
|
|
gchar *font_desc;
|
|
|
|
ges_timeline_element_get_child_properties (self->priv->track_titles->data,
|
|
"font-desc", &font_desc, NULL);
|
|
|
|
return font_desc;
|
|
}
|
|
|
|
/**
|
|
* ges_title_clip_get_halignment:
|
|
* @self: a #GESTitleClip
|
|
*
|
|
* Get the horizontal aligment used by @self.
|
|
*
|
|
* Returns: The horizontal aligment used by @self.
|
|
*
|
|
* Deprecated:1.6: use #ges_timeline_element_get_children_properties instead.
|
|
* See #GESTitleSource for more information about exposed properties
|
|
*/
|
|
GESTextHAlign
|
|
ges_title_clip_get_halignment (GESTitleClip * self)
|
|
{
|
|
GESTextHAlign halign;
|
|
|
|
ges_timeline_element_get_child_properties (self->priv->track_titles->data,
|
|
"halignment", &halign, NULL);
|
|
|
|
return halign;
|
|
}
|
|
|
|
/**
|
|
* ges_title_clip_get_valignment:
|
|
* @self: a #GESTitleClip
|
|
*
|
|
* Get the vertical aligment used by @self.
|
|
*
|
|
* Returns: The vertical aligment used by @self.
|
|
*
|
|
* Deprecated:1.6: use #ges_timeline_element_get_children_properties instead.
|
|
* See #GESTitleSource for more information about exposed properties
|
|
*/
|
|
GESTextVAlign
|
|
ges_title_clip_get_valignment (GESTitleClip * self)
|
|
{
|
|
GESTextVAlign valign;
|
|
|
|
ges_timeline_element_get_child_properties (self->priv->track_titles->data,
|
|
"valignment", &valign, NULL);
|
|
|
|
return valign;
|
|
}
|
|
|
|
/**
|
|
* ges_title_clip_get_text_color:
|
|
* @self: a #GESTitleClip
|
|
*
|
|
* Get the color used by @self.
|
|
*
|
|
* Returns: The color used by @self.
|
|
*
|
|
* Deprecated:1.6: use #ges_timeline_element_get_children_properties instead.
|
|
* See #GESTitleSource for more information about exposed properties
|
|
*/
|
|
const guint32
|
|
ges_title_clip_get_text_color (GESTitleClip * self)
|
|
{
|
|
guint32 color;
|
|
|
|
ges_timeline_element_get_child_properties (self->priv->track_titles->data,
|
|
"color", &color, NULL);
|
|
|
|
return color;
|
|
}
|
|
|
|
/**
|
|
* ges_title_clip_get_background_color:
|
|
* @self: a #GESTitleClip
|
|
*
|
|
* Get the background used by @self.
|
|
*
|
|
* Returns: The color used by @self.
|
|
*
|
|
* Deprecated:1.6: use #ges_timeline_element_get_children_properties instead.
|
|
* See #GESTitleSource for more information about exposed properties
|
|
*/
|
|
const guint32
|
|
ges_title_clip_get_background_color (GESTitleClip * self)
|
|
{
|
|
guint32 color;
|
|
|
|
ges_timeline_element_get_child_properties (self->priv->track_titles->data,
|
|
"foreground-color", &color, NULL);
|
|
|
|
return color;
|
|
}
|
|
|
|
/**
|
|
* ges_title_clip_get_xpos:
|
|
* @self: a #GESTitleClip
|
|
*
|
|
* Get the horizontal position used by @self.
|
|
*
|
|
* Returns: The horizontal position used by @self.
|
|
*
|
|
* Deprecated:1.6: use #ges_timeline_element_get_children_properties instead.
|
|
* See #GESTitleSource for more information about exposed properties
|
|
*/
|
|
const gdouble
|
|
ges_title_clip_get_xpos (GESTitleClip * self)
|
|
{
|
|
gdouble xpos;
|
|
|
|
ges_timeline_element_get_child_properties (self->priv->track_titles->data,
|
|
"xpos", &xpos, NULL);
|
|
|
|
return xpos;
|
|
}
|
|
|
|
/**
|
|
* ges_title_clip_get_ypos:
|
|
* @self: a #GESTitleClip
|
|
*
|
|
* Get the vertical position used by @self.
|
|
*
|
|
* Returns: The vertical position used by @self.
|
|
*
|
|
* Deprecated:1.6: use #ges_timeline_element_get_children_property instead
|
|
*/
|
|
const gdouble
|
|
ges_title_clip_get_ypos (GESTitleClip * self)
|
|
{
|
|
gdouble ypos;
|
|
|
|
ges_timeline_element_get_child_properties (self->priv->track_titles->data,
|
|
"ypos", &ypos, NULL);
|
|
|
|
return ypos;
|
|
}
|
|
|
|
static void
|
|
_child_removed (GESContainer * container, GESTimelineElement * element)
|
|
{
|
|
GESTitleClipPrivate *priv = GES_TITLE_CLIP (container)->priv;
|
|
|
|
/* If this is called, we should be sure the element exists */
|
|
if (GES_IS_TITLE_SOURCE (element)) {
|
|
GST_DEBUG_OBJECT (container, "%" GST_PTR_FORMAT " removed", element);
|
|
priv->track_titles = g_slist_remove (priv->track_titles, element);
|
|
gst_object_unref (element);
|
|
}
|
|
|
|
GES_CONTAINER_CLASS (ges_title_clip_parent_class)->child_removed (container,
|
|
element);
|
|
}
|
|
|
|
static void
|
|
_child_added (GESContainer * container, GESTimelineElement * element)
|
|
{
|
|
GESTitleClipPrivate *priv = GES_TITLE_CLIP (container)->priv;
|
|
|
|
if (GES_IS_TITLE_SOURCE (element)) {
|
|
GST_DEBUG_OBJECT (container, "%" GST_PTR_FORMAT " added", element);
|
|
priv->track_titles = g_slist_prepend (priv->track_titles,
|
|
gst_object_ref (element));
|
|
}
|
|
|
|
GES_CONTAINER_CLASS (ges_title_clip_parent_class)->child_added (container,
|
|
element);
|
|
}
|
|
|
|
static GESTrackElement *
|
|
ges_title_clip_create_track_element (GESClip * clip, GESTrackType type)
|
|
{
|
|
|
|
GESTrackElement *res = NULL;
|
|
|
|
GST_DEBUG_OBJECT (clip, "a GESTitleSource");
|
|
|
|
if (type == GES_TRACK_TYPE_VIDEO)
|
|
res = (GESTrackElement *) ges_title_source_new ();
|
|
|
|
return res;
|
|
}
|
|
|
|
/**
|
|
* ges_title_clip_new:
|
|
*
|
|
* Creates a new #GESTitleClip
|
|
*
|
|
* Returns: (transfer floating) (nullable): The newly created #GESTitleClip,
|
|
* or %NULL if there was an error.
|
|
*/
|
|
GESTitleClip *
|
|
ges_title_clip_new (void)
|
|
{
|
|
GESTitleClip *new_clip;
|
|
GESAsset *asset = ges_asset_request (GES_TYPE_TITLE_CLIP, NULL, NULL);
|
|
|
|
new_clip = GES_TITLE_CLIP (ges_asset_extract (asset, NULL));
|
|
gst_object_unref (asset);
|
|
|
|
return new_clip;
|
|
}
|