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text: Update actors using the default font

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If a ClutterText actor is using the default font from the backend then
we should track font name changes and update it accordingly. This only
applies to ClutterText actors with the :font-name property unset or
explicitly set to NULL.
This commit is contained in:
Emmanuele Bassi 2010-06-26 15:49:15 +01:00
parent 8e4d221821
commit 809211588d
1 changed files with 64 additions and 41 deletions
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105
clutter/clutter-text.c
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@ -140,6 +140,7 @@ struct _ClutterTextPrivate
guint in_select_drag : 1;
guint cursor_color_set : 1;
guint preedit_set : 1;
guint is_default_font : 1;
/* current cursor position */
gint position;
@ -440,9 +441,63 @@ clutter_text_dirty_cache (ClutterText *text)
}
}
/*
* clutter_text_set_font_description_internal:
* @self: a #ClutterText
* @desc: a #PangoFontDescription
*
* Sets @desc as the font description to be used by the #ClutterText
* actor. The font description ownership is transferred to @self so
* the #PangoFontDescription must not be freed after this function
*
* This function will also set the :font-name field as a side-effect
*
* This function will evict the layout cache, and queue a relayout if
* the #ClutterText actor has contents.
*/
static inline void
clutter_text_set_font_description_internal (ClutterText *self,
PangoFontDescription *desc)
{
ClutterTextPrivate *priv = self->priv;
if (priv->font_desc == desc)
return;
if (priv->font_desc != NULL)
pango_font_description_free (priv->font_desc);
priv->font_desc = desc;
/* update the font name string we use */
g_free (priv->font_name);
priv->font_name = pango_font_description_to_string (priv->font_desc);
clutter_text_dirty_cache (self);
if (priv->text && priv->text[0] != '\0')
clutter_actor_queue_relayout (CLUTTER_ACTOR (self));
g_object_notify (G_OBJECT (self), "font-description");
}
static void
clutter_text_font_changed_cb (ClutterText *text)
{
if (text->priv->is_default_font)
{
const gchar *font_name;
PangoFontDescription *font_desc;
font_name = clutter_backend_get_font_name (clutter_get_default_backend ());
CLUTTER_NOTE (ACTOR, "Text[%p]: default font changed to '%s'",
text,
font_name);
font_desc = pango_font_description_from_string (font_name);
clutter_text_set_font_description_internal (text, font_desc);
}
clutter_text_dirty_cache (text);
clutter_actor_queue_relayout (CLUTTER_ACTOR (text));
}
@ -3039,6 +3094,7 @@ clutter_text_init (ClutterText *self)
font_name = clutter_backend_get_font_name (clutter_get_default_backend ());
priv->font_name = g_strdup (font_name);
priv->font_desc = pango_font_description_from_string (font_name);
priv->is_default_font = TRUE;
priv->position = -1;
priv->selection_bound = -1;
@ -3645,46 +3701,6 @@ clutter_text_get_selection_color (ClutterText *self,
*color = priv->selection_color;
}
/*
* clutter_text_set_font_description_internal:
* @self: a #ClutterText
* @desc: a #PangoFontDescription
*
* Sets @desc as the font description to be used by the #ClutterText
* actor. The font description ownership is transferred to @self so
* the #PangoFontDescription must not be freed after this function
*
* This function will also set the :font-name field as a side-effect
*
* This function will evict the layout cache, and queue a relayout if
* the #ClutterText actor has contents.
*/
static inline void
clutter_text_set_font_description_internal (ClutterText *self,
PangoFontDescription *desc)
{
ClutterTextPrivate *priv = self->priv;
if (priv->font_desc == desc)
return;
if (priv->font_desc != NULL)
pango_font_description_free (priv->font_desc);
priv->font_desc = desc;
/* update the font name string we use */
g_free (priv->font_name);
priv->font_name = pango_font_description_to_string (priv->font_desc);
clutter_text_dirty_cache (self);
if (priv->text && priv->text[0] != '\0')
clutter_actor_queue_relayout (CLUTTER_ACTOR (self));
g_object_notify (G_OBJECT (self), "font-description");
}
/**
* clutter_text_set_font_description:
* @self: a #ClutterText
@ -3774,12 +3790,18 @@ clutter_text_set_font_name (ClutterText *self,
{
ClutterTextPrivate *priv;
PangoFontDescription *desc;
gboolean is_default_font;
g_return_if_fail (CLUTTER_IS_TEXT (self));
/* get the default font name from the backend */
if (!font_name || font_name[0] == '\0')
font_name = clutter_backend_get_font_name (clutter_get_default_backend ());
{
font_name = clutter_backend_get_font_name (clutter_get_default_backend ());
is_default_font = TRUE;
}
else
is_default_font = FALSE;
priv = self->priv;
@ -3797,6 +3819,7 @@ clutter_text_set_font_name (ClutterText *self,
/* this will set the font_name field as well */
clutter_text_set_font_description_internal (self, desc);
priv->is_default_font = is_default_font;
g_object_notify (G_OBJECT (self), "font-name");
}