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gtk2/gtk/gtkcssnode.c
Benjamin Otte 0e75fbf39c cssnode: Propagate NTH_LAST_CHILD changes properly 
We were just catching the previous sibling before. Now we properly
invalidate all previous siblings (and also all other wiblings, but we
can think about optimizing that later).
2015-11-09 01:48:14 +01:00

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/* GTK - The GIMP Toolkit
* Copyright (C) 2014 Benjamin Otte <otte@gnome.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "gtkcssnodeprivate.h"
#include "gtkcssanimatedstyleprivate.h"
#include "gtkdebug.h"
#include "gtkintl.h"
#include "gtkmarshalers.h"
#include "gtksettingsprivate.h"
#include "gtktypebuiltins.h"
/* When these change we do a full restyling. Otherwise we try to figure out
* if we need to change things. */
#define GTK_CSS_RADICAL_CHANGE (GTK_CSS_CHANGE_ID | GTK_CSS_CHANGE_NAME | GTK_CSS_CHANGE_CLASS | GTK_CSS_CHANGE_SOURCE | GTK_CSS_CHANGE_PARENT_STYLE)
G_DEFINE_TYPE (GtkCssNode, gtk_css_node, G_TYPE_OBJECT)
enum {
NODE_ADDED,
NODE_REMOVED,
STYLE_CHANGED,
LAST_SIGNAL
};
enum {
PROP_0,
PROP_CLASSES,
PROP_ID,
PROP_NAME,
PROP_STATE,
PROP_VISIBLE,
PROP_WIDGET_TYPE,
NUM_PROPERTIES
};
static guint cssnode_signals[LAST_SIGNAL] = { 0 };
static GParamSpec *cssnode_properties[NUM_PROPERTIES];
static GQuark quark_global_cache;
static GtkStyleProviderPrivate *
gtk_css_node_get_style_provider_or_null (GtkCssNode *cssnode)
{
return GTK_CSS_NODE_GET_CLASS (cssnode)->get_style_provider (cssnode);
}
static void
gtk_css_node_set_invalid (GtkCssNode *node,
gboolean invalid)
{
if (node->invalid == invalid)
return;
node->invalid = invalid;
if (node->visible)
{
if (node->parent)
{
if (invalid)
gtk_css_node_set_invalid (node->parent, TRUE);
}
else
{
if (invalid)
GTK_CSS_NODE_GET_CLASS (node)->queue_validate (node);
else
GTK_CSS_NODE_GET_CLASS (node)->dequeue_validate (node);
}
}
}
static void
gtk_css_node_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GtkCssNode *cssnode = GTK_CSS_NODE (object);
switch (property_id)
{
case PROP_CLASSES:
g_value_take_boxed (value, gtk_css_node_get_classes (cssnode));
break;
case PROP_ID:
g_value_set_string (value, gtk_css_node_get_id (cssnode));
break;
case PROP_NAME:
g_value_set_string (value, gtk_css_node_get_name (cssnode));
break;
case PROP_STATE:
g_value_set_flags (value, gtk_css_node_get_state (cssnode));
break;
case PROP_VISIBLE:
g_value_set_boolean (value, gtk_css_node_get_visible (cssnode));
break;
case PROP_WIDGET_TYPE:
g_value_set_gtype (value, gtk_css_node_get_widget_type (cssnode));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
gtk_css_node_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GtkCssNode *cssnode = GTK_CSS_NODE (object);
switch (property_id)
{
case PROP_CLASSES:
gtk_css_node_set_classes (cssnode, g_value_get_boxed (value));
break;
case PROP_ID:
gtk_css_node_set_id (cssnode, g_value_get_string (value));
break;
case PROP_NAME:
gtk_css_node_set_name (cssnode, g_value_get_string (value));
break;
case PROP_STATE:
gtk_css_node_set_state (cssnode, g_value_get_flags (value));
break;
case PROP_VISIBLE:
gtk_css_node_set_visible (cssnode, g_value_get_boolean (value));
break;
case PROP_WIDGET_TYPE:
gtk_css_node_set_widget_type (cssnode, g_value_get_gtype (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
gtk_css_node_dispose (GObject *object)
{
GtkCssNode *cssnode = GTK_CSS_NODE (object);
while (cssnode->first_child)
{
gtk_css_node_set_parent (cssnode->first_child, NULL);
}
gtk_css_node_set_invalid (cssnode, FALSE);
G_OBJECT_CLASS (gtk_css_node_parent_class)->dispose (object);
}
static void
gtk_css_node_finalize (GObject *object)
{
GtkCssNode *cssnode = GTK_CSS_NODE (object);
if (cssnode->style)
g_object_unref (cssnode->style);
gtk_css_node_declaration_unref (cssnode->decl);
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)
{
GtkStyleProviderPrivate *provider;
GtkCssNode *parent;
parent = gtk_css_node_get_parent (node);
if (parent == NULL)
return FALSE;
provider = gtk_css_node_get_style_provider_or_null (node);
if (provider != NULL && provider != gtk_css_node_get_style_provider (parent))
return FALSE;
return TRUE;
}
static GtkCssStyle *
lookup_in_global_parent_cache (GtkCssNode *node,
GtkCssStyle *parent,
const GtkCssNodeDeclaration *decl)
{
GHashTable *cache;
GtkCssStyle *style;
if (parent == NULL ||
!may_use_global_parent_cache (node))
return NULL;
cache = g_object_get_qdata (G_OBJECT (parent), quark_global_cache);
if (cache == NULL)
return NULL;
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;
}
static gboolean
may_be_stored_in_parent_cache (GtkCssStyle *style)
{
GtkCssChange change;
change = gtk_css_static_style_get_change (GTK_CSS_STATIC_STYLE (style));
/* The cache is shared between all children of the parent, so if a
* style depends on a sibling it is not independant of the child.
*/
if (change & GTK_CSS_CHANGE_ANY_SIBLING)
return FALSE;
/* 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_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,
const GtkCssNodeDeclaration *decl,
GtkCssStyle *style)
{
GHashTable *cache;
g_assert (GTK_IS_CSS_STATIC_STYLE (style));
if (parent == NULL ||
!may_use_global_parent_cache (node))
return;
if (!may_be_stored_in_parent_cache (style))
return;
cache = g_object_get_qdata (G_OBJECT (parent), quark_global_cache);
if (cache == NULL)
{
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_qdata_full (G_OBJECT (parent),
quark_global_cache,
cache,
(GDestroyNotify) g_hash_table_destroy);
}
g_hash_table_insert (cache,
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));
}
static GtkCssStyle *
gtk_css_node_create_style (GtkCssNode *cssnode)
{
const GtkCssNodeDeclaration *decl;
GtkCssMatcher matcher;
GtkCssStyle *parent;
GtkCssStyle *style;
decl = gtk_css_node_get_declaration (cssnode);
parent = cssnode->parent ? cssnode->parent->style : NULL;
style = lookup_in_global_parent_cache (cssnode, parent, decl);
if (style)
return g_object_ref (style);
if (gtk_css_node_init_matcher (cssnode, &matcher))
style = gtk_css_static_style_new_compute (gtk_css_node_get_style_provider (cssnode),
&matcher,
parent);
else
style = gtk_css_static_style_new_compute (gtk_css_node_get_style_provider (cssnode),
NULL,
parent);
store_in_global_parent_cache (cssnode, parent, decl, style);
return style;
}
static gboolean
should_create_transitions (GtkCssChange change)
{
return (change & GTK_CSS_CHANGE_ANIMATIONS) == 0;
}
static gboolean
gtk_css_style_needs_recreation (GtkCssStyle *style,
GtkCssChange change)
{
/* Try to avoid invalidating if we can */
if (change & GTK_CSS_RADICAL_CHANGE)
return TRUE;
if (GTK_IS_CSS_ANIMATED_STYLE (style))
style = GTK_CSS_ANIMATED_STYLE (style)->style;
if (gtk_css_static_style_get_change (GTK_CSS_STATIC_STYLE (style)) & change)
return TRUE;
else
return FALSE;
}
static GtkCssStyle *
gtk_css_node_real_update_style (GtkCssNode *cssnode,
GtkCssChange change,
gint64 timestamp,
GtkCssStyle *style)
{
GtkCssStyle *static_style, *new_static_style, *new_style;
if (GTK_IS_CSS_ANIMATED_STYLE (style))
{
static_style = GTK_CSS_ANIMATED_STYLE (style)->style;
}
else
{
static_style = style;
}
if (gtk_css_style_needs_recreation (static_style, change))
new_static_style = gtk_css_node_create_style (cssnode);
else
new_static_style = g_object_ref (static_style);
if (new_static_style != static_style || (change & GTK_CSS_CHANGE_ANIMATIONS))
{
GtkCssNode *parent = gtk_css_node_get_parent (cssnode);
new_style = gtk_css_animated_style_new (new_static_style,
parent ? gtk_css_node_get_style (parent) : NULL,
timestamp,
gtk_css_node_get_style_provider (cssnode),
should_create_transitions (change) ? style : NULL);
}
else if (static_style != style && (change & GTK_CSS_CHANGE_TIMESTAMP))
{
new_style = gtk_css_animated_style_new_advance (GTK_CSS_ANIMATED_STYLE (style),
static_style,
timestamp);
}
else
{
new_style = g_object_ref (style);
}
if (!gtk_css_style_is_static (new_style))
gtk_css_node_set_invalid (cssnode, TRUE);
g_object_unref (new_static_style);
return new_style;
}
static void
gtk_css_node_real_invalidate (GtkCssNode *node)
{
}
static void
gtk_css_node_real_queue_validate (GtkCssNode *node)
{
}
static void
gtk_css_node_real_dequeue_validate (GtkCssNode *node)
{
}
static void
gtk_css_node_real_validate (GtkCssNode *node)
{
}
gboolean
gtk_css_node_real_init_matcher (GtkCssNode *cssnode,
GtkCssMatcher *matcher)
{
_gtk_css_matcher_node_init (matcher, cssnode);
return TRUE;
}
static GtkWidgetPath *
gtk_css_node_real_create_widget_path (GtkCssNode *cssnode)
{
return gtk_widget_path_new ();
}
static const GtkWidgetPath *
gtk_css_node_real_get_widget_path (GtkCssNode *cssnode)
{
return NULL;
}
static GtkStyleProviderPrivate *
gtk_css_node_real_get_style_provider (GtkCssNode *cssnode)
{
return NULL;
}
static GdkFrameClock *
gtk_css_node_real_get_frame_clock (GtkCssNode *cssnode)
{
return NULL;
}
static void
gtk_css_node_real_node_removed (GtkCssNode *parent,
GtkCssNode *node,
GtkCssNode *previous)
{
if (node->previous_sibling)
node->previous_sibling->next_sibling = node->next_sibling;
else
node->parent->first_child = node->next_sibling;
if (node->next_sibling)
node->next_sibling->previous_sibling = node->previous_sibling;
else
node->parent->last_child = node->previous_sibling;
node->previous_sibling = NULL;
node->next_sibling = NULL;
node->parent = NULL;
}
static void
gtk_css_node_real_node_added (GtkCssNode *parent,
GtkCssNode *node,
GtkCssNode *new_previous)
{
if (new_previous)
{
node->previous_sibling = new_previous;
node->next_sibling = new_previous->next_sibling;
new_previous->next_sibling = node;
}
else
{
node->next_sibling = parent->first_child;
parent->first_child = node;
}
if (node->next_sibling)
node->next_sibling->previous_sibling = node;
else
parent->last_child = node;
node->parent = parent;
}
static void
gtk_css_node_real_style_changed (GtkCssNode *cssnode,
GtkCssStyle *old_style,
GtkCssStyle *new_style)
{
g_object_ref (new_style);
g_object_unref (old_style);
cssnode->style = new_style;
}
static void
gtk_css_node_class_init (GtkCssNodeClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
quark_global_cache = g_quark_from_static_string ("gtk-global-cache");
object_class->get_property = gtk_css_node_get_property;
object_class->set_property = gtk_css_node_set_property;
object_class->dispose = gtk_css_node_dispose;
object_class->finalize = gtk_css_node_finalize;
klass->update_style = gtk_css_node_real_update_style;
klass->invalidate = gtk_css_node_real_invalidate;
klass->validate = gtk_css_node_real_validate;
klass->queue_validate = gtk_css_node_real_queue_validate;
klass->dequeue_validate = gtk_css_node_real_dequeue_validate;
klass->init_matcher = gtk_css_node_real_init_matcher;
klass->create_widget_path = gtk_css_node_real_create_widget_path;
klass->get_widget_path = gtk_css_node_real_get_widget_path;
klass->get_style_provider = gtk_css_node_real_get_style_provider;
klass->get_frame_clock = gtk_css_node_real_get_frame_clock;
klass->node_added = gtk_css_node_real_node_added;
klass->node_removed = gtk_css_node_real_node_removed;
klass->style_changed = gtk_css_node_real_style_changed;
cssnode_signals[NODE_ADDED] =
g_signal_new (I_("node-added"),
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkCssNodeClass, node_added),
NULL, NULL,
_gtk_marshal_VOID__OBJECT_OBJECT,
G_TYPE_NONE, 2,
GTK_TYPE_CSS_NODE, GTK_TYPE_CSS_NODE);
cssnode_signals[NODE_REMOVED] =
g_signal_new (I_("node-removed"),
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkCssNodeClass, node_removed),
NULL, NULL,
_gtk_marshal_VOID__OBJECT_OBJECT,
G_TYPE_NONE, 2,
GTK_TYPE_CSS_NODE, GTK_TYPE_CSS_NODE);
cssnode_signals[STYLE_CHANGED] =
g_signal_new (I_("style-changed"),
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkCssNodeClass, style_changed),
NULL, NULL,
_gtk_marshal_VOID__OBJECT_OBJECT,
G_TYPE_NONE, 2,
GTK_TYPE_CSS_STYLE, GTK_TYPE_CSS_STYLE);
cssnode_properties[PROP_CLASSES] =
g_param_spec_boxed ("classes", "Classes",
"List of classes",
G_TYPE_STRV,
G_PARAM_READWRITE
| G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
cssnode_properties[PROP_ID] =
g_param_spec_string ("id", "ID",
"Unique ID",
NULL,
G_PARAM_READWRITE
| G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
cssnode_properties[PROP_NAME] =
g_param_spec_string ("name", "Name",
"Name identifying the type of node",
NULL,
G_PARAM_READWRITE
| G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
cssnode_properties[PROP_STATE] =
g_param_spec_flags ("state", "State",
"State flags",
GTK_TYPE_STATE_FLAGS,
0,
G_PARAM_READWRITE
| G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
cssnode_properties[PROP_VISIBLE] =
g_param_spec_boolean ("visible", "Visible",
"If other nodes can see this node",
TRUE,
G_PARAM_READWRITE
| G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
cssnode_properties[PROP_WIDGET_TYPE] =
g_param_spec_gtype ("widget-type", "Widget type",
"GType of the widget",
G_TYPE_NONE,
G_PARAM_READWRITE
| G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
g_object_class_install_properties (object_class, NUM_PROPERTIES, cssnode_properties);
}
static void
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;
}
GtkCssNode *
gtk_css_node_new (void)
{
return g_object_new (GTK_TYPE_CSS_NODE, NULL);
}
static GdkFrameClock *
gtk_css_node_get_frame_clock_or_null (GtkCssNode *cssnode)
{
while (cssnode->parent)
cssnode = cssnode->parent;
return GTK_CSS_NODE_GET_CLASS (cssnode)->get_frame_clock (cssnode);
}
static gint64
gtk_css_node_get_timestamp (GtkCssNode *cssnode)
{
GdkFrameClock *frameclock;
frameclock = gtk_css_node_get_frame_clock_or_null (cssnode);
if (frameclock == NULL)
return 0;
return gdk_frame_clock_get_frame_time (frameclock);
}
static void
gtk_css_node_parent_was_unset (GtkCssNode *node)
{
if (node->invalid)
GTK_CSS_NODE_GET_CLASS (node)->queue_validate (node);
}
static void
gtk_css_node_parent_will_be_set (GtkCssNode *node)
{
if (node->invalid)
GTK_CSS_NODE_GET_CLASS (node)->dequeue_validate (node);
}
static void
gtk_css_node_invalidate_style (GtkCssNode *cssnode)
{
if (cssnode->style_is_invalid)
return;
cssnode->style_is_invalid = TRUE;
gtk_css_node_set_invalid (cssnode, TRUE);
if (cssnode->first_child)
gtk_css_node_invalidate_style (cssnode->first_child);
if (cssnode->next_sibling)
gtk_css_node_invalidate_style (cssnode->next_sibling);
}
static void
gtk_css_node_reposition (GtkCssNode *node,
GtkCssNode *new_parent,
GtkCssNode *previous)
{
GtkCssNode *old_parent;
g_assert (! (new_parent == NULL && previous != NULL));
old_parent = node->parent;
/* Take a reference here so the whole function has a reference */
g_object_ref (node);
if (node->visible)
{
if (node->next_sibling)
gtk_css_node_invalidate (node->next_sibling,
GTK_CSS_CHANGE_ANY_SIBLING
| GTK_CSS_CHANGE_NTH_CHILD
| (node->previous_sibling ? 0 : GTK_CSS_CHANGE_FIRST_CHILD));
else if (node->previous_sibling)
gtk_css_node_invalidate (node->previous_sibling, GTK_CSS_CHANGE_LAST_CHILD);
}
if (old_parent != NULL)
{
g_signal_emit (old_parent, cssnode_signals[NODE_REMOVED], 0, node, node->previous_sibling);
if (old_parent->first_child && node->visible)
gtk_css_node_invalidate (old_parent->first_child, GTK_CSS_CHANGE_NTH_LAST_CHILD);
}
if (old_parent != new_parent)
{
if (old_parent == NULL)
{
gtk_css_node_parent_will_be_set (node);
}
else
{
g_object_unref (node);
}
if (gtk_css_node_get_style_provider_or_null (node) == NULL)
gtk_css_node_invalidate_style_provider (node);
gtk_css_node_invalidate (node, GTK_CSS_CHANGE_TIMESTAMP | GTK_CSS_CHANGE_ANIMATIONS);
if (new_parent)
{
g_object_ref (node);
if (node->pending_changes)
new_parent->needs_propagation = TRUE;
if (node->invalid && node->visible)
gtk_css_node_set_invalid (new_parent, TRUE);
}
else
{
gtk_css_node_parent_was_unset (node);
}
}
if (new_parent)
{
g_signal_emit (new_parent, cssnode_signals[NODE_ADDED], 0, node, previous);
if (node->visible)
gtk_css_node_invalidate (new_parent->first_child, GTK_CSS_CHANGE_NTH_LAST_CHILD);
}
if (node->visible)
{
if (node->next_sibling)
{
if (node->previous_sibling == NULL)
gtk_css_node_invalidate (node->next_sibling, GTK_CSS_CHANGE_FIRST_CHILD);
else
gtk_css_node_invalidate_style (node->next_sibling);
}
else if (node->previous_sibling)
{
gtk_css_node_invalidate (node->previous_sibling, GTK_CSS_CHANGE_LAST_CHILD);
}
}
else
{
if (node->next_sibling)
gtk_css_node_invalidate_style (node->next_sibling);
}
gtk_css_node_invalidate (node, GTK_CSS_CHANGE_ANY_PARENT
| GTK_CSS_CHANGE_ANY_SIBLING
| GTK_CSS_CHANGE_NTH_CHILD
| (node->previous_sibling ? 0 : GTK_CSS_CHANGE_FIRST_CHILD)
| (node->next_sibling ? 0 : GTK_CSS_CHANGE_LAST_CHILD));
g_object_unref (node);
}
void
gtk_css_node_set_parent (GtkCssNode *node,
GtkCssNode *parent)
{
if (node->parent == parent)
return;
gtk_css_node_reposition (node, parent, parent ? parent->last_child : NULL);
}
void
gtk_css_node_insert_after (GtkCssNode *parent,
GtkCssNode *cssnode,
GtkCssNode *previous_sibling)
{
g_return_if_fail (previous_sibling == NULL || previous_sibling->parent == parent);
if (cssnode->previous_sibling == previous_sibling &&
cssnode->parent == parent)
return;
gtk_css_node_reposition (cssnode,
parent,
previous_sibling);
}
void
gtk_css_node_insert_before (GtkCssNode *parent,
GtkCssNode *cssnode,
GtkCssNode *next_sibling)
{
g_return_if_fail (next_sibling == NULL || next_sibling->parent == parent);
if (cssnode->next_sibling == next_sibling &&
cssnode->parent == parent)
return;
gtk_css_node_reposition (cssnode,
parent,
next_sibling ? next_sibling->previous_sibling : parent->last_child);
}
void
gtk_css_node_reverse_children (GtkCssNode *cssnode)
{
GtkCssNode *end;
end = cssnode->last_child;
while (cssnode->first_child != end)
{
gtk_css_node_reposition (cssnode->first_child,
cssnode,
end);
}
}
GtkCssNode *
gtk_css_node_get_parent (GtkCssNode *cssnode)
{
return cssnode->parent;
}
GtkCssNode *
gtk_css_node_get_first_child (GtkCssNode *cssnode)
{
return cssnode->first_child;
}
GtkCssNode *
gtk_css_node_get_last_child (GtkCssNode *cssnode)
{
return cssnode->last_child;
}
GtkCssNode *
gtk_css_node_get_previous_sibling (GtkCssNode *cssnode)
{
return cssnode->previous_sibling;
}
GtkCssNode *
gtk_css_node_get_next_sibling (GtkCssNode *cssnode)
{
return cssnode->next_sibling;
}
static gboolean
gtk_css_node_set_style (GtkCssNode *cssnode,
GtkCssStyle *style)
{
if (cssnode->style == style)
return FALSE;
g_signal_emit (cssnode, cssnode_signals[STYLE_CHANGED], 0, cssnode->style, style);
return TRUE;
}
static void
gtk_css_node_propagate_pending_changes (GtkCssNode *cssnode,
gboolean style_changed)
{
GtkCssChange change, child_change;
GtkCssNode *child;
change = _gtk_css_change_for_child (cssnode->pending_changes);
if (style_changed)
change |= GTK_CSS_CHANGE_PARENT_STYLE;
if (!cssnode->needs_propagation && change == 0)
return;
for (child = gtk_css_node_get_first_child (cssnode);
child;
child = gtk_css_node_get_next_sibling (child))
{
child_change = child->pending_changes;
gtk_css_node_invalidate (child, change);
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 || cssnode->needs_propagation;
}
static void
gtk_css_node_ensure_style (GtkCssNode *cssnode,
gint64 current_time)
{
gboolean style_changed;
if (!gtk_css_node_needs_new_style (cssnode))
return;
if (cssnode->parent)
gtk_css_node_ensure_style (cssnode->parent, current_time);
if (cssnode->style_is_invalid)
{
GtkCssStyle *new_style;
if (cssnode->previous_sibling)
gtk_css_node_ensure_style (cssnode->previous_sibling, current_time);
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);
cssnode->pending_changes = 0;
cssnode->style_is_invalid = FALSE;
}
GtkCssStyle *
gtk_css_node_get_style (GtkCssNode *cssnode)
{
if (gtk_css_node_needs_new_style (cssnode))
{
gint64 timestamp = gtk_css_node_get_timestamp (cssnode);
gtk_css_node_ensure_style (cssnode, timestamp);
}
return cssnode->style;
}
void
gtk_css_node_set_visible (GtkCssNode *cssnode,
gboolean visible)
{
if (cssnode->visible == visible)
return;
cssnode->visible = visible;
g_object_notify_by_pspec (G_OBJECT (cssnode), cssnode_properties[PROP_VISIBLE]);
if (cssnode->invalid)
{
if (cssnode->visible)
{
if (cssnode->parent)
gtk_css_node_set_invalid (cssnode->parent, TRUE);
else
GTK_CSS_NODE_GET_CLASS (cssnode)->queue_validate (cssnode);
}
else
{
if (cssnode->parent == NULL)
GTK_CSS_NODE_GET_CLASS (cssnode)->dequeue_validate (cssnode);
}
}
if (cssnode->next_sibling)
gtk_css_node_invalidate (cssnode->next_sibling, GTK_CSS_CHANGE_ANY_SIBLING
| GTK_CSS_CHANGE_NTH_CHILD
| (cssnode->previous_sibling ? 0 : GTK_CSS_CHANGE_FIRST_CHILD));
if (cssnode->previous_sibling)
{
if (cssnode->next_sibling)
gtk_css_node_invalidate (cssnode->previous_sibling, GTK_CSS_CHANGE_LAST_CHILD);
gtk_css_node_invalidate (cssnode->parent->first_child, GTK_CSS_CHANGE_NTH_LAST_CHILD);
}
}
gboolean
gtk_css_node_get_visible (GtkCssNode *cssnode)
{
return cssnode->visible;
}
void
gtk_css_node_set_name (GtkCssNode *cssnode,
/*interned*/ const char *name)
{
if (gtk_css_node_declaration_set_name (&cssnode->decl, name))
{
gtk_css_node_invalidate (cssnode, GTK_CSS_CHANGE_NAME);
g_object_notify_by_pspec (G_OBJECT (cssnode), cssnode_properties[PROP_NAME]);
g_object_notify_by_pspec (G_OBJECT (cssnode), cssnode_properties[PROP_WIDGET_TYPE]);
}
}
/* interned */ const char *
gtk_css_node_get_name (GtkCssNode *cssnode)
{
return gtk_css_node_declaration_get_name (cssnode->decl);
}
void
gtk_css_node_set_widget_type (GtkCssNode *cssnode,
GType widget_type)
{
if (gtk_css_node_declaration_set_type (&cssnode->decl, widget_type))
{
gtk_css_node_invalidate (cssnode, GTK_CSS_CHANGE_NAME);
g_object_notify_by_pspec (G_OBJECT (cssnode), cssnode_properties[PROP_NAME]);
g_object_notify_by_pspec (G_OBJECT (cssnode), cssnode_properties[PROP_WIDGET_TYPE]);
}
}
GType
gtk_css_node_get_widget_type (GtkCssNode *cssnode)
{
return gtk_css_node_declaration_get_type (cssnode->decl);
}
void
gtk_css_node_set_id (GtkCssNode *cssnode,
/* interned */ const char *id)
{
if (gtk_css_node_declaration_set_id (&cssnode->decl, id))
{
gtk_css_node_invalidate (cssnode, GTK_CSS_CHANGE_ID);
g_object_notify_by_pspec (G_OBJECT (cssnode), cssnode_properties[PROP_ID]);
}
}
/* interned */ const char *
gtk_css_node_get_id (GtkCssNode *cssnode)
{
return gtk_css_node_declaration_get_id (cssnode->decl);
}
void
gtk_css_node_set_state (GtkCssNode *cssnode,
GtkStateFlags state_flags)
{
if (gtk_css_node_declaration_set_state (&cssnode->decl, state_flags))
{
gtk_css_node_invalidate (cssnode, GTK_CSS_CHANGE_STATE);
g_object_notify_by_pspec (G_OBJECT (cssnode), cssnode_properties[PROP_STATE]);
}
}
GtkStateFlags
gtk_css_node_get_state (GtkCssNode *cssnode)
{
return gtk_css_node_declaration_get_state (cssnode->decl);
}
void
gtk_css_node_set_junction_sides (GtkCssNode *cssnode,
GtkJunctionSides junction_sides)
{
gtk_css_node_declaration_set_junction_sides (&cssnode->decl, junction_sides);
}
GtkJunctionSides
gtk_css_node_get_junction_sides (GtkCssNode *cssnode)
{
return gtk_css_node_declaration_get_junction_sides (cssnode->decl);
}
static void
gtk_css_node_clear_classes (GtkCssNode *cssnode)
{
if (gtk_css_node_declaration_clear_classes (&cssnode->decl))
{
gtk_css_node_invalidate (cssnode, GTK_CSS_CHANGE_CLASS);
g_object_notify_by_pspec (G_OBJECT (cssnode), cssnode_properties[PROP_CLASSES]);
}
}
void
gtk_css_node_set_classes (GtkCssNode *cssnode,
const char **classes)
{
guint i;
g_object_freeze_notify (G_OBJECT (cssnode));
gtk_css_node_clear_classes (cssnode);
if (classes)
{
for (i = 0; classes[i] != NULL; i++)
{
gtk_css_node_add_class (cssnode, g_quark_from_string (classes[i]));
}
}
g_object_thaw_notify (G_OBJECT (cssnode));
}
char **
gtk_css_node_get_classes (GtkCssNode *cssnode)
{
const GQuark *classes;
char **result;
guint n_classes, i, j;
classes = gtk_css_node_declaration_get_classes (cssnode->decl, &n_classes);
result = g_new (char *, n_classes + 1);
for (i = n_classes, j = 0; i-- > 0; ++j)
{
result[j] = g_strdup (g_quark_to_string (classes[i]));
}
result[n_classes] = NULL;
return result;
}
void
gtk_css_node_add_class (GtkCssNode *cssnode,
GQuark style_class)
{
if (gtk_css_node_declaration_add_class (&cssnode->decl, style_class))
{
gtk_css_node_invalidate (cssnode, GTK_CSS_CHANGE_CLASS);
g_object_notify_by_pspec (G_OBJECT (cssnode), cssnode_properties[PROP_CLASSES]);
}
}
void
gtk_css_node_remove_class (GtkCssNode *cssnode,
GQuark style_class)
{
if (gtk_css_node_declaration_remove_class (&cssnode->decl, style_class))
{
gtk_css_node_invalidate (cssnode, GTK_CSS_CHANGE_CLASS);
g_object_notify_by_pspec (G_OBJECT (cssnode), cssnode_properties[PROP_CLASSES]);
}
}
gboolean
gtk_css_node_has_class (GtkCssNode *cssnode,
GQuark style_class)
{
return gtk_css_node_declaration_has_class (cssnode->decl, style_class);
}
const GQuark *
gtk_css_node_list_classes (GtkCssNode *cssnode,
guint *n_classes)
{
return gtk_css_node_declaration_get_classes (cssnode->decl, n_classes);
}
void
gtk_css_node_add_region (GtkCssNode *cssnode,
GQuark region,
GtkRegionFlags flags)
{
gtk_css_node_declaration_add_region (&cssnode->decl, region, flags);
}
void
gtk_css_node_remove_region (GtkCssNode *cssnode,
GQuark region)
{
gtk_css_node_declaration_remove_region (&cssnode->decl, region);
}
gboolean
gtk_css_node_has_region (GtkCssNode *cssnode,
GQuark region,
GtkRegionFlags *out_flags)
{
return gtk_css_node_declaration_has_region (cssnode->decl, region, out_flags);
}
GList *
gtk_css_node_list_regions (GtkCssNode *cssnode)
{
return gtk_css_node_declaration_list_regions (cssnode->decl);
}
const GtkCssNodeDeclaration *
gtk_css_node_get_declaration (GtkCssNode *cssnode)
{
return cssnode->decl;
}
void
gtk_css_node_invalidate_style_provider (GtkCssNode *cssnode)
{
GtkCssNode *child;
gtk_css_node_invalidate (cssnode, GTK_CSS_CHANGE_SOURCE);
for (child = cssnode->first_child;
child;
child = child->next_sibling)
{
if (gtk_css_node_get_style_provider_or_null (child) == NULL)
gtk_css_node_invalidate_style_provider (child);
}
}
static void
gtk_css_node_invalidate_timestamp (GtkCssNode *cssnode)
{
GtkCssNode *child;
if (!cssnode->invalid)
return;
if (!gtk_css_style_is_static (cssnode->style))
gtk_css_node_invalidate (cssnode, GTK_CSS_CHANGE_TIMESTAMP);
for (child = cssnode->first_child; child; child = child->next_sibling)
{
gtk_css_node_invalidate_timestamp (child);
}
}
void
gtk_css_node_invalidate_frame_clock (GtkCssNode *cssnode,
gboolean just_timestamp)
{
/* frame clock is handled by the top level */
if (cssnode->parent)
return;
gtk_css_node_invalidate_timestamp (cssnode);
if (!just_timestamp)
gtk_css_node_invalidate (cssnode, GTK_CSS_CHANGE_ANIMATIONS);
}
void
gtk_css_node_invalidate (GtkCssNode *cssnode,
GtkCssChange change)
{
if (!cssnode->invalid)
change &= ~GTK_CSS_CHANGE_TIMESTAMP;
if (change == 0)
return;
cssnode->pending_changes |= change;
GTK_CSS_NODE_GET_CLASS (cssnode)->invalidate (cssnode);
if (cssnode->parent)
cssnode->parent->needs_propagation = TRUE;
gtk_css_node_invalidate_style (cssnode);
}
void
gtk_css_node_validate_internal (GtkCssNode *cssnode,
gint64 timestamp)
{
GtkCssNode *child;
/* If you run your application with
* GTK_DEBUG=no-css-cache
* every invalidation will purge the cache and completely query
* everything anew form the cache. This is slow (in particular
* when animating), but useful for figuring out bugs.
*
* We achieve that by pretending that everything that could have
* changed has and so we of course totally need to redo everything.
*
* Note that this also completely revalidates child widgets all
* the time.
*/
#ifdef G_ENABLE_DEBUG
if (GTK_DEBUG_CHECK (NO_CSS_CACHE))
cssnode->pending_changes |= GTK_CSS_CHANGE_ANY;
#endif
if (!cssnode->invalid)
return;
gtk_css_node_ensure_style (cssnode, timestamp);
/* need to set to FALSE then to TRUE here to make it chain up */
gtk_css_node_set_invalid (cssnode, FALSE);
if (!gtk_css_style_is_static (cssnode->style))
gtk_css_node_set_invalid (cssnode, TRUE);
GTK_CSS_NODE_GET_CLASS (cssnode)->validate (cssnode);
for (child = gtk_css_node_get_first_child (cssnode);
child;
child = gtk_css_node_get_next_sibling (child))
{
if (child->visible)
gtk_css_node_validate_internal (child, timestamp);
}
}
void
gtk_css_node_validate (GtkCssNode *cssnode)
{
gint64 timestamp;
timestamp = gtk_css_node_get_timestamp (cssnode);
gtk_css_node_validate_internal (cssnode, timestamp);
}
gboolean
gtk_css_node_init_matcher (GtkCssNode *cssnode,
GtkCssMatcher *matcher)
{
return GTK_CSS_NODE_GET_CLASS (cssnode)->init_matcher (cssnode, matcher);
}
GtkWidgetPath *
gtk_css_node_create_widget_path (GtkCssNode *cssnode)
{
return GTK_CSS_NODE_GET_CLASS (cssnode)->create_widget_path (cssnode);
}
const GtkWidgetPath *
gtk_css_node_get_widget_path (GtkCssNode *cssnode)
{
return GTK_CSS_NODE_GET_CLASS (cssnode)->get_widget_path (cssnode);
}
GtkStyleProviderPrivate *
gtk_css_node_get_style_provider (GtkCssNode *cssnode)
{
GtkStyleProviderPrivate *result;
result = gtk_css_node_get_style_provider_or_null (cssnode);
if (result)
return result;
if (cssnode->parent)
return gtk_css_node_get_style_provider (cssnode->parent);
return GTK_STYLE_PROVIDER_PRIVATE (_gtk_settings_get_style_cascade (gtk_settings_get_default (), 1));
}
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