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cssnode: Loosen requirements for style caching

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We can actually share :first-child/:last-child related things now,
because we special case them. So the only positions we cannot cache are
nth-child/nth-last-child.

This should take care of a lot of Adwaita's styling.
This commit is contained in:
Benjamin Otte 2015-08-26 18:01:39 +02:00
parent 2080e7318c
commit f1ca75d181
1 changed files with 39 additions and 6 deletions
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45
gtk/gtkcssnode.c
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@ -181,6 +181,10 @@ gtk_css_node_finalize (GObject *object)
G_OBJECT_CLASS (gtk_css_node_parent_class)->finalize (object);
}
#define UNPACK_DECLARATION(packed) ((GtkCssNodeDeclaration *) (GPOINTER_TO_SIZE (packed) & ~0x3))
#define UNPACK_FLAGS(packed) (GPOINTER_TO_SIZE (packed) & 0x3)
#define PACK(decl, first_child, last_child) GSIZE_TO_POINTER (GPOINTER_TO_SIZE (decl) | ((first_child) ? 0x2 : 0) | ((last_child) ? 0x1 : 0))
static gboolean
may_use_global_parent_cache (GtkCssNode *node)
{
@ -214,7 +218,10 @@ lookup_in_global_parent_cache (GtkCssNode *node,
if (cache == NULL)
return NULL;
style = g_hash_table_lookup (cache, decl);
style = g_hash_table_lookup (cache,
PACK (decl,
gtk_css_node_get_previous_sibling (node) == NULL,
gtk_css_node_get_next_sibling (node) == NULL));
return style;
}
@ -235,12 +242,36 @@ may_be_stored_in_parent_cache (GtkCssStyle *style)
/* Again, the cache is shared between all children of the parent.
* If the position is relevant, no child has the same style.
*/
if (change & GTK_CSS_CHANGE_POSITION)
if (change & (GTK_CSS_CHANGE_NTH_CHILD | GTK_CSS_CHANGE_NTH_LAST_CHILD))
return FALSE;
return TRUE;
}
static guint
gtk_global_parent_cache_hash (gconstpointer item)
{
return gtk_css_node_declaration_hash (UNPACK_DECLARATION (item)) << 2
|| UNPACK_FLAGS (item);
}
static gboolean
gtk_global_parent_cache_equal (gconstpointer item1,
gconstpointer item2)
{
if (UNPACK_FLAGS (item1) != UNPACK_FLAGS (item2))
return FALSE;
return gtk_css_node_declaration_equal (UNPACK_DECLARATION (item1),
UNPACK_DECLARATION (item2));
}
static void
gtk_global_parent_cache_free (gpointer item)
{
gtk_css_node_declaration_unref (UNPACK_DECLARATION (item));
}
static void
store_in_global_parent_cache (GtkCssNode *node,
GtkCssStyle *parent,
@ -261,15 +292,17 @@ store_in_global_parent_cache (GtkCssNode *node,
cache = g_object_get_data (G_OBJECT (parent), "gtk-global-cache");
if (cache == NULL)
{
cache = g_hash_table_new_full (gtk_css_node_declaration_hash,
gtk_css_node_declaration_equal,
(GDestroyNotify) gtk_css_node_declaration_unref,
cache = g_hash_table_new_full (gtk_global_parent_cache_hash,
gtk_global_parent_cache_equal,
gtk_global_parent_cache_free,
g_object_unref);
g_object_set_data_full (G_OBJECT (parent), "gtk-global-cache", cache, (GDestroyNotify) g_hash_table_destroy);
}
g_hash_table_insert (cache,
gtk_css_node_declaration_ref ((GtkCssNodeDeclaration *) decl),
PACK (gtk_css_node_declaration_ref ((GtkCssNodeDeclaration *) decl),
gtk_css_node_get_previous_sibling (node) == NULL,
gtk_css_node_get_next_sibling (node) == NULL),
g_object_ref (style));
}