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actor: Create a PangoContext per actor
For a variety of complicated reasons, ClutterText currently sets fields on the PangoContext when creating a layout. This causes ClutterText to behave somewhat erratically in certain cases, since the PangoContext is currently shared between all actors. GTK+ creates a PangoContext for every single GtkWidget, so it seems like we should do the same here. Move the private code that was previously in clutter-main.c into clutter-actor.c and clean it up a bit. This gives every actor its own PangoContext it can mutilate whenever it wants, at its heart's content. https://bugzilla.gnome.org/show_bug.cgi?id=739050
This commit is contained in:
Jasper St. Pierre
parent
14d28e7908
commit
46877cc2bd
@ -15474,6 +15474,46 @@ clutter_actor_grab_key_focus (ClutterActor *self)
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clutter_stage_set_key_focus (CLUTTER_STAGE (stage), self);
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}
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static void
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update_pango_context (ClutterBackend *backend,
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PangoContext *context)
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{
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ClutterSettings *settings;
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PangoFontDescription *font_desc;
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const cairo_font_options_t *font_options;
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gchar *font_name;
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PangoDirection pango_dir;
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gdouble resolution;
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settings = clutter_settings_get_default ();
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/* update the text direction */
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if (clutter_get_default_text_direction () == CLUTTER_TEXT_DIRECTION_RTL)
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pango_dir = PANGO_DIRECTION_RTL;
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else
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pango_dir = PANGO_DIRECTION_LTR;
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pango_context_set_base_dir (context, pango_dir);
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g_object_get (settings, "font-name", &font_name, NULL);
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/* get the configuration for the PangoContext from the backend */
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font_options = clutter_backend_get_font_options (backend);
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resolution = clutter_backend_get_resolution (backend);
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font_desc = pango_font_description_from_string (font_name);
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if (resolution < 0)
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resolution = 96.0; /* fall back */
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pango_context_set_font_description (context, font_desc);
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pango_cairo_context_set_font_options (context, font_options);
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pango_cairo_context_set_resolution (context, resolution);
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pango_font_description_free (font_desc);
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g_free (font_name);
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}
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/**
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* clutter_actor_get_pango_context:
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* @self: a #ClutterActor
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@ -15500,16 +15540,23 @@ PangoContext *
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clutter_actor_get_pango_context (ClutterActor *self)
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{
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ClutterActorPrivate *priv;
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ClutterBackend *backend = clutter_get_default_backend ();
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g_return_val_if_fail (CLUTTER_IS_ACTOR (self), NULL);
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priv = self->priv;
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if (priv->pango_context != NULL)
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return priv->pango_context;
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if (G_UNLIKELY (priv->pango_context == NULL))
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{
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priv->pango_context = clutter_actor_create_pango_context (self);
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priv->pango_context = _clutter_context_get_pango_context ();
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g_object_ref (priv->pango_context);
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g_signal_connect_object (backend, "resolution-changed",
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G_CALLBACK (update_pango_context), priv->pango_context, 0);
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g_signal_connect_object (backend, "font-changed",
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G_CALLBACK (update_pango_context), priv->pango_context, 0);
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}
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else
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update_pango_context (backend, priv->pango_context);
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return priv->pango_context;
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}
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@ -15533,9 +15580,16 @@ clutter_actor_get_pango_context (ClutterActor *self)
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PangoContext *
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clutter_actor_create_pango_context (ClutterActor *self)
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{
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g_return_val_if_fail (CLUTTER_IS_ACTOR (self), NULL);
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CoglPangoFontMap *font_map;
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PangoContext *context;
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return _clutter_context_create_pango_context ();
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font_map = COGL_PANGO_FONT_MAP (clutter_get_font_map ());
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context = cogl_pango_font_map_create_context (font_map);
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update_pango_context (clutter_get_default_backend (), context);
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pango_context_set_language (context, pango_language_get_default ());
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return context;
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}
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/**
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@ -764,86 +764,6 @@ clutter_get_text_direction (void)
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return dir;
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}
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static void
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update_pango_context (ClutterBackend *backend,
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PangoContext *context)
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{
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ClutterSettings *settings;
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PangoFontDescription *font_desc;
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const cairo_font_options_t *font_options;
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gchar *font_name;
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PangoDirection pango_dir;
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gdouble resolution;
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settings = clutter_settings_get_default ();
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/* update the text direction */
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if (clutter_text_direction == CLUTTER_TEXT_DIRECTION_RTL)
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pango_dir = PANGO_DIRECTION_RTL;
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else
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pango_dir = PANGO_DIRECTION_LTR;
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pango_context_set_base_dir (context, pango_dir);
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g_object_get (settings, "font-name", &font_name, NULL);
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/* get the configuration for the PangoContext from the backend */
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font_options = clutter_backend_get_font_options (backend);
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resolution = clutter_backend_get_resolution (backend);
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font_desc = pango_font_description_from_string (font_name);
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if (resolution < 0)
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resolution = 96.0; /* fall back */
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pango_context_set_font_description (context, font_desc);
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pango_cairo_context_set_font_options (context, font_options);
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pango_cairo_context_set_resolution (context, resolution);
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pango_font_description_free (font_desc);
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g_free (font_name);
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}
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PangoContext *
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_clutter_context_get_pango_context (void)
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{
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ClutterMainContext *self = _clutter_context_get_default ();
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if (G_UNLIKELY (self->pango_context == NULL))
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{
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PangoContext *context;
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context = _clutter_context_create_pango_context ();
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self->pango_context = context;
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g_signal_connect (self->backend, "resolution-changed",
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G_CALLBACK (update_pango_context),
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self->pango_context);
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g_signal_connect (self->backend, "font-changed",
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G_CALLBACK (update_pango_context),
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self->pango_context);
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}
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else
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update_pango_context (self->backend, self->pango_context);
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return self->pango_context;
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}
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PangoContext *
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_clutter_context_create_pango_context (void)
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{
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CoglPangoFontMap *font_map;
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PangoContext *context;
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font_map = clutter_context_get_pango_fontmap ();
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context = cogl_pango_font_map_create_context (font_map);
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update_pango_context (clutter_get_default_backend (), context);
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pango_context_set_language (context, pango_language_get_default ());
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return context;
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}
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/**
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* clutter_main_quit:
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*
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@ -198,8 +198,6 @@ ClutterMainContext * _clutter_context_get_default (void);
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void _clutter_context_lock (void);
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void _clutter_context_unlock (void);
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gboolean _clutter_context_is_initialized (void);
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PangoContext * _clutter_context_create_pango_context (void);
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PangoContext * _clutter_context_get_pango_context (void);
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ClutterPickMode _clutter_context_get_pick_mode (void);
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void _clutter_context_push_shader_stack (ClutterActor *actor);
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ClutterActor * _clutter_context_pop_shader_stack (ClutterActor *actor);
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