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vipsinterpolate uses new_from_string() vfunc system

This commit is contained in:
John Cupitt 2011-05-25 13:25:18 +01:00
parent 1a75cf5be2
commit 3f1c855177
2 changed files with 30 additions and 2 deletions
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5
libvips/include/vips/object.h
View File

@ -266,8 +266,9 @@ struct _VipsObjectClass {
*/
/* Given a command-line arg (eg. a filename), make an instance of the
* object. Don't call this directly, see
* vips_object_new_from_string().
* object. Just do the g_object_new(), don't call _build().
*
* Don't call this directly, see vips_object_new_from_string().
*/
VipsObject *(*new_from_string)( const char *string );

27
libvips/resample/interpolate.c
View File

@ -167,16 +167,43 @@ vips_interpolate_real_get_window_offset( VipsInterpolate *interpolate )
}
}
static VipsObject *
vips_interpolate_new_from_string( const char *string )
{
GType type;
/* The main arg selects the subclass.
*/
if( !(type = vips_type_find( "VipsInterpolate", string )) )
return( NULL );
return( VIPS_OBJECT( g_object_new( type, NULL ) ) );
}
static void
vips_interpolate_to_string( VipsObject *object, VipsBuf *buf )
{
VipsObjectClass *class = VIPS_OBJECT_GET_CLASS( object );
/* Just "bicubic" or whatever.
*/
vips_buf_appends( buf, class->nickname );
}
static void
vips_interpolate_class_init( VipsInterpolateClass *class )
{
#ifdef DEBUG
GObjectClass *gobject_class = G_OBJECT_CLASS( class );
#endif /*DEBUG*/
VipsObjectClass *vobject_class = VIPS_OBJECT_CLASS( class );
#ifdef DEBUG
gobject_class->finalize = vips_interpolate_finalize;
#endif /*DEBUG*/
vobject_class->new_from_string = vips_interpolate_new_from_string;
vobject_class->to_string = vips_interpolate_to_string;
class->interpolate = NULL;
class->get_window_size = vips_interpolate_real_get_window_size;
class->get_window_offset = vips_interpolate_real_get_window_offset;