basetextoverlay: mark valign and halign props as DOC_SHOW_DEFAULT

To document it, we instantiate a subclass and inspect the properties
on the created object. Subclasses (in that case textrender) may
initialize those properties with a different default, we do not
want to expose that in the base class documentation.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/merge_requests/723>

diff --git a/docs/plugins/gst_plugins_cache.json b/docs/plugins/gst_plugins_cache.json
index e43e729..145f922 100644 (file)
--- a/docs/plugins/gst_plugins_cache.json
+++ b/docs/plugins/gst_plugins_cache.json
@@ -8036,7 +8036,7 @@
                         "construct": false,
                         "construct-only": false,
                         "controllable": false,
-                        "default": "left (0)",
+                        "default": "center (1)",
                         "mutable": "null",
                         "readable": true,
                         "type": "GstBaseTextOverlayHAlign",

diff --git a/ext/pango/gstbasetextoverlay.c b/ext/pango/gstbasetextoverlay.c
index d1f6be0..4e5024e 100644 (file)
--- a/ext/pango/gstbasetextoverlay.c
+++ b/ext/pango/gstbasetextoverlay.c
@@ -379,7 +379,8 @@ gst_base_text_overlay_class_init (GstBaseTextOverlayClass * klass)
       g_param_spec_uint ("shading-value", "background shading value",
           "Shading value to apply if shaded-background is true", 1, 255,
           DEFAULT_PROP_SHADING_VALUE,
-          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
+          GST_PARAM_DOC_SHOW_DEFAULT));
   g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_VALIGNMENT,
       g_param_spec_enum ("valignment", "vertical alignment",
           "Vertical alignment of the text", GST_TYPE_BASE_TEXT_OVERLAY_VALIGN,
@@ -387,7 +388,9 @@ gst_base_text_overlay_class_init (GstBaseTextOverlayClass * klass)
   g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_HALIGNMENT,
       g_param_spec_enum ("halignment", "horizontal alignment",
           "Horizontal alignment of the text", GST_TYPE_BASE_TEXT_OVERLAY_HALIGN,
-          DEFAULT_PROP_HALIGNMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+          DEFAULT_PROP_HALIGNMENT,
+          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
+          GST_PARAM_DOC_SHOW_DEFAULT));
   g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_XPAD,
       g_param_spec_int ("xpad", "horizontal paddding",
           "Horizontal paddding when using left/right alignment", 0, G_MAXINT,
@@ -403,8 +406,8 @@ gst_base_text_overlay_class_init (GstBaseTextOverlayClass * klass)
           GST_PARAM_CONTROLLABLE | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
   g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_DELTAY,
       g_param_spec_int ("deltay", "Y position modifier",
-          "Shift Y position up or down. Unit is pixels.",
-          G_MININT, G_MAXINT, DEFAULT_PROP_DELTAY,
+          "Shift Y position up or down. Unit is pixels.", G_MININT, G_MAXINT,
+          DEFAULT_PROP_DELTAY,
           GST_PARAM_CONTROLLABLE | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
 
   /**