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expose text, font-desc, and alignment properties in GESTimelineSource

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This commit is contained in:
Brandon Lewis 2010-07-14 15:23:35 +02:00 committed by Edward Hervey
parent ba00ee2bfd
commit 1052532f5a
2 changed files with 211 additions and 3 deletions
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205
ges/ges-timeline-source.c
View file

@ -29,6 +29,22 @@
#include "ges-track-source.h"
#include "ges-track-text-overlay.h"
/* FIXME: really need to put this in a common header file */
#define DEFAULT_PROP_TEXT ""
#define DEFAULT_PROP_FONT_DESC "Serif 36"
#define DEFAULT_PROP_VALIGNMENT GES_TEXT_VALIGN_BASELINE
#define DEFAULT_PROP_HALIGNMENT GES_TEXT_HALIGN_CENTER
#
enum
{
PROP_0,
PROP_TEXT,
PROP_FONT_DESC,
PROP_HALIGNMENT,
PROP_VALIGNMENT,
};
G_DEFINE_TYPE (GESTimelineSource, ges_timeline_source,
GES_TYPE_TIMELINE_OBJECT);
@ -40,11 +56,37 @@ static gboolean
ges_timeline_source_create_track_objects (GESTimelineObject * obj,
GESTrack * track);
static void
ges_timeline_source_set_text (GESTimelineSource * self, const gchar * text);
static void
ges_timeline_source_set_font_desc (GESTimelineSource * self, const gchar *
font_desc);
static void
ges_timeline_source_set_valign (GESTimelineSource * self, GESTextVAlign valign);
static void
ges_timeline_source_set_halign (GESTimelineSource * self, GESTextHAlign halign);
static void
ges_timeline_source_get_property (GObject * object, guint property_id,
GValue * value, GParamSpec * pspec)
{
GESTimelineSource *ts = (GESTimelineSource *) object;
switch (property_id) {
case PROP_TEXT:
g_value_set_string (value, ts->text);
break;
case PROP_FONT_DESC:
g_value_set_string (value, ts->font_desc);
break;
case PROP_HALIGNMENT:
g_value_set_enum (value, ts->halign);
break;
case PROP_VALIGNMENT:
g_value_set_enum (value, ts->valign);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
@ -54,7 +96,20 @@ static void
ges_timeline_source_set_property (GObject * object, guint property_id,
const GValue * value, GParamSpec * pspec)
{
GESTimelineSource *ts = (GESTimelineSource *) object;
switch (property_id) {
case PROP_TEXT:
ges_timeline_source_set_text (ts, g_value_get_string (value));
break;
case PROP_FONT_DESC:
ges_timeline_source_set_font_desc (ts, g_value_get_string (value));
break;
case PROP_HALIGNMENT:
ges_timeline_source_set_halign (ts, g_value_get_enum (value));
break;
case PROP_VALIGNMENT:
ges_timeline_source_set_valign (ts, g_value_get_enum (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
@ -83,6 +138,51 @@ ges_timeline_source_class_init (GESTimelineSourceClass * klass)
object_class->dispose = ges_timeline_source_dispose;
object_class->finalize = ges_timeline_source_finalize;
/**
* GESTimelineTextOverlay:text
*
* The text to diplay
*/
g_object_class_install_property (object_class, PROP_TEXT,
g_param_spec_string ("text", "Text", "The text to display",
"", G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
/**
* GESTimelineTextOverlay:font-desc
*
* Pango font description string
*/
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_FONT_DESC,
g_param_spec_string ("font-desc", "font description",
"Pango font description of font to be used for rendering. "
"See documentation of pango_font_description_from_string "
"for syntax.", DEFAULT_PROP_FONT_DESC,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
/**
* GESTimelineTextOverlay:valignment
*
* Vertical alignent of the text
*/
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_VALIGNMENT,
g_param_spec_enum ("valignment", "vertical alignment",
"Vertical alignment of the text", GES_TEXT_VALIGN_TYPE,
DEFAULT_PROP_VALIGNMENT, G_PARAM_READWRITE | G_PARAM_CONSTRUCT |
G_PARAM_STATIC_STRINGS));
/**
* GESTimelineTextOverlay:halignment
*
* Horizontal alignment of the text
*/
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_HALIGNMENT,
g_param_spec_enum ("halignment", "horizontal alignment",
"Horizontal alignment of the text",
GES_TEXT_HALIGN_TYPE, DEFAULT_PROP_HALIGNMENT,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
timobj_class->create_track_object = ges_timeline_source_create_track_object;
timobj_class->create_track_objects = ges_timeline_source_create_track_objects;
@ -91,6 +191,8 @@ ges_timeline_source_class_init (GESTimelineSourceClass * klass)
static void
ges_timeline_source_init (GESTimelineSource * self)
{
self->halign = DEFAULT_PROP_HALIGNMENT;
self->valign = DEFAULT_PROP_VALIGNMENT;
}
GESTimelineSource *
@ -113,8 +215,11 @@ ges_timeline_source_create_track_objects (GESTimelineObject * obj,
GESTrack * track)
{
GESTrackObject *primary, *overlay;
GESTimelineSource *self;
gboolean success = FALSE;
self = (GESTimelineSource *) obj;
/* calls add_track_object() for us. we already own this reference */
primary = ges_timeline_object_create_track_object (obj, track);
if (!primary) {
@ -137,10 +242,106 @@ ges_timeline_source_create_track_objects (GESTimelineObject * obj,
return FALSE;
}
ges_track_text_overlay_set_text ((GESTrackTextOverlay *) overlay,
"test overlays in timeline sources");
success = ges_track_add_object (track, overlay);
if (self->text)
ges_track_text_overlay_set_text ((GESTrackTextOverlay *) overlay,
self->text);
if (self->font_desc)
ges_track_text_overlay_set_font_desc ((GESTrackTextOverlay *) overlay,
self->font_desc);
ges_track_text_overlay_set_halignment ((GESTrackTextOverlay *) overlay,
self->halign);
ges_track_text_overlay_set_valignment ((GESTrackTextOverlay *) overlay,
self->valign);
}
return success;
}
static void
ges_timeline_source_set_text (GESTimelineSource * self, const gchar * text)
{
GList *tmp;
GESTimelineObject *object = (GESTimelineObject *) self;
GST_DEBUG ("self:%p, text:%s", self, text);
if (self->text)
g_free (self->text);
self->text = g_strdup (text);
for (tmp = object->trackobjects; tmp; tmp = tmp->next) {
GESTrackObject *trackobject = (GESTrackObject *) tmp->data;
if (GES_IS_TRACK_TEXT_OVERLAY (trackobject))
ges_track_text_overlay_set_text ((GESTrackTextOverlay *)
(trackobject), self->text);
}
}
static void
ges_timeline_source_set_font_desc (GESTimelineSource * self, const gchar *
font_desc)
{
GList *tmp;
GESTimelineObject *object = (GESTimelineObject *) self;
GST_DEBUG ("self:%p, font_desc:%s", self, font_desc);
if (self->font_desc)
g_free (self->font_desc);
self->font_desc = g_strdup (font_desc);
for (tmp = object->trackobjects; tmp; tmp = tmp->next) {
GESTrackObject *trackobject = (GESTrackObject *) tmp->data;
if (GES_IS_TRACK_TEXT_OVERLAY (trackobject))
ges_track_text_overlay_set_font_desc ((GESTrackTextOverlay *)
(trackobject), self->font_desc);
}
}
static void
ges_timeline_source_set_halign (GESTimelineSource * self, GESTextHAlign halign)
{
GList *tmp;
GESTimelineObject *object = (GESTimelineObject *) self;
GST_DEBUG ("self:%p, halign:%d", self, halign);
self->halign = halign;
for (tmp = object->trackobjects; tmp; tmp = tmp->next) {
GESTrackObject *trackobject = (GESTrackObject *) tmp->data;
if (GES_IS_TRACK_TEXT_OVERLAY (trackobject))
ges_track_text_overlay_set_halignment ((GESTrackTextOverlay *)
(trackobject), self->halign);
}
}
static void
ges_timeline_source_set_valign (GESTimelineSource * self, GESTextVAlign valign)
{
GList *tmp;
GESTimelineObject *object = (GESTimelineObject *) self;
GST_DEBUG ("self:%p, valign:%d", self, valign);
self->valign = valign;
for (tmp = object->trackobjects; tmp; tmp = tmp->next) {
GESTrackObject *trackobject = (GESTrackObject *) tmp->data;
if (GES_IS_TRACK_TEXT_OVERLAY (trackobject))
ges_track_text_overlay_set_valignment ((GESTrackTextOverlay *)
(trackobject), self->valign);
}
}

9
ges/ges-timeline-source.h
View file

@ -24,6 +24,7 @@
#include <glib-object.h>
#include <ges/ges-types.h>
#include <ges/ges-timeline-object.h>
#include <ges/ges-enums.h>
G_BEGIN_DECLS
@ -51,7 +52,13 @@ G_BEGIN_DECLS
struct _GESTimelineSource {
GESTimelineObject parent;
/*< public >*/
/*< private *>*/
gchar *text;
gchar *font_desc;
GESTextHAlign halign;
GESTextVAlign valign;
/*< public >*/
};
/**