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Update the PangoContext on backend changes

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When the ClutterBackend notifies of changes in the resolution or
font options, update the PangoContext stored by Clutter's main
context. This allows changing the backend font-related settings at
runtime.
This commit is contained in:
Emmanuele Bassi 2008-12-23 14:34:16 +00:00
parent 213d8f0e4e
commit 977bdcf89b
1 changed files with 24 additions and 8 deletions
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32
clutter/clutter-main.c
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@ -401,12 +401,27 @@ _clutter_do_pick (ClutterStage *stage,
return clutter_get_actor_by_gid (id); return clutter_get_actor_by_gid (id);
} }
static void
update_pango_context (ClutterBackend *backend,
ClutterMainContext *main_context)
{
PangoContext *context = main_context->pango_context;
cairo_font_options_t *font_options;
gdouble resolution;
font_options = clutter_backend_get_font_options (backend);
resolution = clutter_backend_get_resolution (backend);
if (resolution < 0)
resolution = 96.0; /* fall back */
pango_cairo_context_set_font_options (context, font_options);
pango_cairo_context_set_resolution (context, resolution);
}
PangoContext * PangoContext *
_clutter_context_create_pango_context (ClutterMainContext *self) _clutter_context_create_pango_context (ClutterMainContext *self)
{ {
PangoContext *context; PangoContext *context;
gdouble resolution;
cairo_font_options_t *font_options;
if (G_LIKELY (self->pango_context != NULL)) if (G_LIKELY (self->pango_context != NULL))
context = self->pango_context; context = self->pango_context;
@ -416,13 +431,14 @@ _clutter_context_create_pango_context (ClutterMainContext *self)
self->pango_context = context; self->pango_context = context;
} }
font_options = clutter_backend_get_font_options (self->backend); g_signal_connect (self->backend, "resolution-changed",
resolution = clutter_backend_get_resolution (self->backend); G_CALLBACK (update_pango_context),
if (resolution < 0) self);
resolution = 96.0; /* fall back */ g_signal_connect (self->backend, "font-changed",
G_CALLBACK (update_pango_context),
self);
pango_cairo_context_set_font_options (context, font_options); update_pango_context (self->backend, self);
pango_cairo_context_set_resolution (context, resolution);
return context; return context;
} }