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cssnode: Track invalid children

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We need to properly track if a node needs to propagate invalidation
state information to its children. We didn't do this properly before and
that could lead to us forgetting to invalidate nodes in corner cases.
This commit is contained in:
Benjamin Otte
2015-03-01 13:14:01 +01:00
parent 7395dddd47
commit c7fba52a36
2 changed files with 26 additions and 11 deletions
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36
gtk/gtkcssnode.c
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@ -499,6 +499,8 @@ gtk_css_node_reposition (GtkCssNode *node,
gtk_css_node_set_children_changed (parent);
g_object_ref (node);
if (node->pending_changes)
parent->needs_propagation = TRUE;
if (node->invalid && node->visible)
gtk_css_node_set_invalid (parent, TRUE);
}
@ -621,7 +623,7 @@ gtk_css_node_propagate_pending_changes (GtkCssNode *cssnode,
if (style_changed)
change |= GTK_CSS_CHANGE_PARENT_STYLE;
if (!cssnode->invalid && change == 0)
if (!cssnode->needs_propagation && change == 0)
return;
for (child = gtk_css_node_get_first_child (cssnode);
@ -633,19 +635,20 @@ gtk_css_node_propagate_pending_changes (GtkCssNode *cssnode,
if (child->visible)
change |= _gtk_css_change_for_sibling (child_change);
}
cssnode->needs_propagation = FALSE;
}
static gboolean
gtk_css_node_needs_new_style (GtkCssNode *cssnode)
{
return cssnode->style_is_invalid;
return cssnode->style_is_invalid || cssnode->needs_propagation;
}
static void
gtk_css_node_ensure_style (GtkCssNode *cssnode,
gint64 current_time)
{
GtkCssStyle *new_style;
gboolean style_changed;
if (!gtk_css_node_needs_new_style (cssnode))
@ -654,16 +657,25 @@ gtk_css_node_ensure_style (GtkCssNode *cssnode,
if (cssnode->parent)
gtk_css_node_ensure_style (cssnode->parent, current_time);
if (cssnode->previous_sibling)
gtk_css_node_ensure_style (cssnode->previous_sibling, current_time);
if (cssnode->style_is_invalid)
{
GtkCssStyle *new_style;
new_style = GTK_CSS_NODE_GET_CLASS (cssnode)->update_style (cssnode,
cssnode->pending_changes,
current_time,
cssnode->style);
if (cssnode->previous_sibling)
gtk_css_node_ensure_style (cssnode->previous_sibling, current_time);
style_changed = gtk_css_node_set_style (cssnode, new_style);
g_object_unref (new_style);
new_style = GTK_CSS_NODE_GET_CLASS (cssnode)->update_style (cssnode,
cssnode->pending_changes,
current_time,
cssnode->style);
style_changed = gtk_css_node_set_style (cssnode, new_style);
g_object_unref (new_style);
}
else
{
style_changed = FALSE;
}
gtk_css_node_propagate_pending_changes (cssnode, style_changed);
@ -886,6 +898,8 @@ gtk_css_node_invalidate (GtkCssNode *cssnode,
GTK_CSS_NODE_GET_CLASS (cssnode)->invalidate (cssnode);
if (cssnode->parent)
cssnode->parent->needs_propagation = TRUE;
gtk_css_node_invalidate_style (cssnode);
}