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cssnode: Add visibility concept

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This allows hiding nodes of invisible widgets.
And that in turn makes sure :nth-child() works as expected.
This commit is contained in:
Benjamin Otte 2015-02-10 02:50:57 +01:00
parent ee91fb71ca
commit 2694545468
5 changed files with 65 additions and 10 deletions
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30
gtk/gtkcssmatcher.c
View File

@ -256,13 +256,33 @@ gtk_css_matcher_node_get_parent (GtkCssMatcher *matcher,
return gtk_css_node_init_matcher (node, matcher);
}
static GtkCssNode *
get_previous_visible_sibling (GtkCssNode *node)
{
do {
node = gtk_css_node_get_previous_sibling (node);
} while (node && !gtk_css_node_get_visible (node));
return node;
}
static GtkCssNode *
get_next_visible_sibling (GtkCssNode *node)
{
do {
node = gtk_css_node_get_next_sibling (node);
} while (node && !gtk_css_node_get_visible (node));
return node;
}
static gboolean
gtk_css_matcher_node_get_previous (GtkCssMatcher *matcher,
const GtkCssMatcher *next)
{
GtkCssNode *node;
node = gtk_css_node_get_previous_sibling (next->node.node);
node = get_previous_visible_sibling (next->node.node);
if (node == NULL)
return FALSE;
@ -340,7 +360,7 @@ gtk_css_matcher_node_nth_child (GtkCssNode *node,
if (node == NULL)
return FALSE;
node = gtk_css_node_get_previous_sibling (node);
node = get_previous_visible_sibling (node);
}
if (a == 0)
@ -352,7 +372,7 @@ gtk_css_matcher_node_nth_child (GtkCssNode *node,
while (node)
{
b++;
node = gtk_css_node_get_previous_sibling (node);
node = get_previous_visible_sibling (node);
}
return b % a == 0;
@ -368,7 +388,7 @@ gtk_css_matcher_node_nth_last_child (GtkCssNode *node,
if (node == NULL)
return FALSE;
node = gtk_css_node_get_next_sibling (node);
node = get_next_visible_sibling (node);
}
if (a == 0)
@ -380,7 +400,7 @@ gtk_css_matcher_node_nth_last_child (GtkCssNode *node,
while (node)
{
b++;
node = gtk_css_node_get_next_sibling (node);
node = get_next_visible_sibling (node);
}
return b % a == 0;

34
gtk/gtkcssnode.c
View File

@ -44,7 +44,7 @@ gtk_css_node_set_invalid (GtkCssNode *node,
if (node->parent)
{
if (invalid)
if (invalid && node->visible)
gtk_css_node_set_invalid (node->parent, TRUE);
}
else
@ -343,6 +343,8 @@ gtk_css_node_init (GtkCssNode *cssnode)
cssnode->decl = gtk_css_node_declaration_new ();
cssnode->style = g_object_ref (gtk_css_static_style_get_default ());
cssnode->visible = TRUE;
}
static void
@ -436,17 +438,19 @@ gtk_css_node_reposition (GtkCssNode *node,
else
{
g_object_unref (node);
gtk_css_node_set_children_changed (node->parent);
if (node->visible)
gtk_css_node_set_children_changed (node->parent);
}
node->parent = parent;
if (parent)
{
gtk_css_node_set_children_changed (parent);
if (node->visible)
gtk_css_node_set_children_changed (parent);
g_object_ref (node);
if (node->invalid)
if (node->invalid && node->visible)
gtk_css_node_set_invalid (parent, TRUE);
}
else
@ -564,6 +568,25 @@ gtk_css_node_get_style (GtkCssNode *cssnode)
return cssnode->style;
}
void
gtk_css_node_set_visible (GtkCssNode *cssnode,
gboolean visible)
{
if (cssnode->visible == visible)
return;
cssnode->visible = visible;
if (cssnode->parent)
gtk_css_node_set_children_changed (cssnode->parent);
}
gboolean
gtk_css_node_get_visible (GtkCssNode *cssnode)
{
return cssnode->visible;
}
void
gtk_css_node_set_widget_type (GtkCssNode *cssnode,
GType widget_type)
@ -761,7 +784,8 @@ gtk_css_node_validate (GtkCssNode *cssnode,
child;
child = gtk_css_node_get_next_sibling (child))
{
gtk_css_node_validate (child, timestamp, changes);
if (child->visible)
gtk_css_node_validate (child, timestamp, changes);
}
_gtk_bitmask_free (changes);

5
gtk/gtkcssnodeprivate.h
View File

@ -49,6 +49,7 @@ struct _GtkCssNode
GtkCssChange pending_changes; /* changes that accumulated since the style was last computed */
guint visible :1; /* node will be skipped when validating or computing styles */
guint invalid :1; /* node or a child needs to be validated (even if just for animation) */
guint children_changed :1; /* the children changed since last validation */
};
@ -88,6 +89,10 @@ GtkCssNode * gtk_css_node_get_last_child (GtkCssNode *
GtkCssNode * gtk_css_node_get_previous_sibling(GtkCssNode *cssnode);
GtkCssNode * gtk_css_node_get_next_sibling (GtkCssNode *cssnode);
void gtk_css_node_set_visible (GtkCssNode *cssnode,
gboolean visible);
gboolean gtk_css_node_get_visible (GtkCssNode *cssnode);
void gtk_css_node_set_widget_type (GtkCssNode *cssnode,
GType widget_type);
GType gtk_css_node_get_widget_type (GtkCssNode *cssnode);

2
gtk/gtkcsswidgetnode.c
View File

@ -294,6 +294,8 @@ gtk_css_widget_node_new (GtkWidget *widget)
result = g_object_new (GTK_TYPE_CSS_WIDGET_NODE, NULL);
result->widget = widget;
gtk_css_node_set_visible (GTK_CSS_NODE (result),
gtk_widget_get_visible (widget));
return GTK_CSS_NODE (result);
}

4
gtk/gtkwidget.c
View File

@ -4869,6 +4869,8 @@ gtk_widget_show (GtkWidget *widget)
gtk_widget_queue_compute_expand (widget->priv->parent);
}
gtk_css_node_set_visible (widget->priv->cssnode, TRUE);
g_signal_emit (widget, widget_signals[SHOW], 0);
g_object_notify (G_OBJECT (widget), "visible");
@ -4967,6 +4969,8 @@ gtk_widget_hide (GtkWidget *widget)
gtk_widget_queue_compute_expand (widget);
}
gtk_css_node_set_visible (widget->priv->cssnode, FALSE);
g_signal_emit (widget, widget_signals[HIDE], 0);
if (!gtk_widget_is_toplevel (widget))
gtk_widget_queue_resize (widget);