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st-theme-node: let paint states take weak ref on theme nodes

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When the St theme is changed, the StThemeContext unrefs all the theme
nodes cached in it's internal hash table, then emits a signal to
notify all theme nodes that the current theme has changed.

The problem is that the first StWidget to catch a theme changed signal
will trigger a "style-changed" signal catched by its children first.
So the theme changed signal can't be processed properly to cleanup
StThemeNodePaintState before recomputing the theme.

This patch adds a weak ref to the StThemeNode in the
StThemeNodePaintState to ensure paint states are properly cleaned up
when the associated StThemeNode is freed.

https://bugzilla.gnome.org/show_bug.cgi?id=703859
This commit is contained in:
Lionel Landwerlin 2013-07-10 10:22:07 +01:00
parent 2dbe511519
commit a18fb27d0f
2 changed files with 38 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

41
src/st/st-theme-node-drawing.c
View File

@ -1391,7 +1391,7 @@ st_theme_node_render_resources (StThemeNodePaintState *state,
*/
st_theme_node_paint_state_free (state);
state->node = node;
st_theme_node_paint_state_set_node (state, node);
state->alloc_width = width;
state->alloc_height = height;
@ -1526,7 +1526,7 @@ st_theme_node_update_resources (StThemeNodePaintState *state,
}
}
state->node = node;
st_theme_node_paint_state_set_node (state, node);
state->alloc_width = width;
state->alloc_height = height;
@ -2523,8 +2523,9 @@ st_theme_node_paint (StThemeNode *node,
}
}
void
st_theme_node_paint_state_free (StThemeNodePaintState *state)
static void
st_theme_node_paint_state_node_free_internal (StThemeNodePaintState *state,
gboolean unref_node)
{
int corner_id;
@ -2539,9 +2540,39 @@ st_theme_node_paint_state_free (StThemeNodePaintState *state)
if (state->corner_material[corner_id] != COGL_INVALID_HANDLE)
cogl_handle_unref (state->corner_material[corner_id]);
if (unref_node)
st_theme_node_paint_state_set_node (state, NULL);
st_theme_node_paint_state_init (state);
}
static void
st_theme_node_paint_state_node_freed (StThemeNodePaintState *state)
{
st_theme_node_paint_state_node_free_internal (state, FALSE);
}
void
st_theme_node_paint_state_set_node (StThemeNodePaintState *state, StThemeNode *node)
{
if (state->node)
g_object_weak_unref (G_OBJECT (state->node),
(GWeakNotify) st_theme_node_paint_state_node_freed,
state);
state->node = node;
if (state->node)
g_object_weak_ref (G_OBJECT (state->node),
(GWeakNotify) st_theme_node_paint_state_node_freed,
state);
}
void
st_theme_node_paint_state_free (StThemeNodePaintState *state)
{
st_theme_node_paint_state_node_free_internal (state, TRUE);
}
void
st_theme_node_paint_state_init (StThemeNodePaintState *state)
{
@ -2567,7 +2598,7 @@ st_theme_node_paint_state_copy (StThemeNodePaintState *state,
st_theme_node_paint_state_free (state);
state->node = other->node;
st_theme_node_paint_state_set_node (state, other->node);
state->alloc_width = other->alloc_width;
state->alloc_height = other->alloc_height;

2
src/st/st-theme-node.h
View File

@ -281,6 +281,8 @@ void st_theme_node_paint_state_free (StThemeNodePaintState *state);
void st_theme_node_paint_state_copy (StThemeNodePaintState *state,
StThemeNodePaintState *other);
void st_theme_node_paint_state_invalidate (StThemeNodePaintState *state);
void st_theme_node_paint_state_set_node (StThemeNodePaintState *state,
StThemeNode *node);
G_END_DECLS