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css: Match pseudo-classes for siblings

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This commit is contained in:
Benjamin Otte 2011-05-25 20:05:55 +02:00
parent cd838480eb
commit 0d69d9558e
1 changed files with 32 additions and 3 deletions
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35
gtk/gtkcssselector.c
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@ -181,17 +181,46 @@ _gtk_css_selector_to_string (const GtkCssSelector *selector)
return g_string_free (string, FALSE);
}
static GtkRegionFlags
compute_region_flags_for_index (const GtkWidgetPath *path,
guint id)
{
const GtkWidgetPath *siblings;
guint sibling_id, n_siblings;
GtkRegionFlags flags;
siblings = gtk_widget_path_iter_get_siblings (path, id);
if (siblings == NULL)
return 0;
sibling_id = gtk_widget_path_iter_get_sibling_index (path, id);
n_siblings = gtk_widget_path_length (siblings);
flags = (sibling_id % 2) ? GTK_REGION_EVEN : GTK_REGION_ODD;
if (sibling_id == 0)
flags |= GTK_REGION_FIRST;
if (sibling_id + 1 == n_siblings)
flags |= GTK_REGION_LAST;
return flags;
}
static gboolean
gtk_css_selector_matches_type (const GtkCssSelector *selector,
const GtkWidgetPath *path,
guint id)
{
if (selector->pseudo_classes)
{
GtkRegionFlags flags = compute_region_flags_for_index (path, id);
if ((selector->pseudo_classes & flags) != selector->pseudo_classes)
return FALSE;
}
if (selector->name == NULL)
return TRUE;
if (selector->pseudo_classes)
return FALSE;
if (selector->type == G_TYPE_NONE)
return FALSE;