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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/>.
*/
#ifndef __GTK_CSS_NODE_PRIVATE_H__
#define __GTK_CSS_NODE_PRIVATE_H__
#include "gtkcssnodedeclarationprivate.h"
#include "gtkcssnodestylecacheprivate.h"
#include "gtkcssstylechangeprivate.h"
#include "gtkbitmaskprivate.h"
#include "gtkcsstypesprivate.h"
#include "gtkstylecontext.h"
G_BEGIN_DECLS
#define GTK_TYPE_CSS_NODE (gtk_css_node_get_type ())
#define GTK_CSS_NODE(obj) (G_TYPE_CHECK_INSTANCE_CAST (obj, GTK_TYPE_CSS_NODE, GtkCssNode))
#define GTK_CSS_NODE_CLASS(cls) (G_TYPE_CHECK_CLASS_CAST (cls, GTK_TYPE_CSS_NODE, GtkCssNodeClass))
#define GTK_IS_CSS_NODE(obj) (G_TYPE_CHECK_INSTANCE_TYPE (obj, GTK_TYPE_CSS_NODE))
#define GTK_IS_CSS_NODE_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE (obj, GTK_TYPE_CSS_NODE))
#define GTK_CSS_NODE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_CSS_NODE, GtkCssNodeClass))
typedef struct _GtkCssNodeClass GtkCssNodeClass;
struct _GtkCssNode
{
GObject object;
GtkCssNode *parent;
GtkCssNode *previous_sibling;
GtkCssNode *next_sibling;
GtkCssNode *first_child;
GtkCssNode *last_child;
GtkCssNodeDeclaration *decl;
GtkCssStyle *style;
GtkCssNodeStyleCache *cache; /* cache for children to look up styles */
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 needs_propagation :1; /* children have state changes that need to be propagated to their siblings */
/* Two invariants hold for this variable:
* style_is_invalid == TRUE => next_sibling->style_is_invalid == TRUE
* style_is_invalid == FALSE => first_child->style_is_invalid == TRUE
* So if a valid style is computed, one has to previously ensure that the parent's and the previous sibling's style
* are valid. This allows both validation and invalidation to run in O(nodes-in-tree) */
guint style_is_invalid :1; /* the style needs to be recomputed */
};
struct _GtkCssNodeClass
{
GObjectClass object_class;
void (* node_added) (GtkCssNode *cssnode,
GtkCssNode *child,
GtkCssNode *previous);
void (* node_removed) (GtkCssNode *cssnode,
GtkCssNode *child,
GtkCssNode *previous);
void (* style_changed) (GtkCssNode *cssnode,
GtkCssStyleChange *style_change);
gboolean (* init_matcher) (GtkCssNode *cssnode,
GtkCssMatcher *matcher);
GtkWidgetPath * (* create_widget_path) (GtkCssNode *cssnode);
const GtkWidgetPath * (* get_widget_path) (GtkCssNode *cssnode);
/* get style provider to use or NULL to use parent's */
GtkStyleProvider * (* get_style_provider) (GtkCssNode *cssnode);
/* get frame clock or NULL (only relevant for root node) */
GdkFrameClock * (* get_frame_clock) (GtkCssNode *cssnode);
GtkCssStyle * (* update_style) (GtkCssNode *cssnode,
GtkCssChange pending_changes,
gint64 timestamp,
GtkCssStyle *old_style);
void (* invalidate) (GtkCssNode *node);
void (* queue_validate) (GtkCssNode *node);
void (* dequeue_validate) (GtkCssNode *node);
void (* validate) (GtkCssNode *node);
};
GType gtk_css_node_get_type (void) G_GNUC_CONST;
GtkCssNode * gtk_css_node_new (void);
void gtk_css_node_set_parent (GtkCssNode *cssnode,
GtkCssNode *parent);
void gtk_css_node_insert_after (GtkCssNode *parent,
GtkCssNode *cssnode,
GtkCssNode *previous_sibling);
void gtk_css_node_insert_before (GtkCssNode *parent,
GtkCssNode *cssnode,
GtkCssNode *next_sibling);
GtkCssNode * gtk_css_node_get_parent (GtkCssNode *cssnode) G_GNUC_PURE;
GtkCssNode * gtk_css_node_get_first_child (GtkCssNode *cssnode) G_GNUC_PURE;
GtkCssNode * gtk_css_node_get_last_child (GtkCssNode *cssnode) G_GNUC_PURE;
GtkCssNode * gtk_css_node_get_previous_sibling(GtkCssNode *cssnode) G_GNUC_PURE;
GtkCssNode * gtk_css_node_get_next_sibling (GtkCssNode *cssnode) G_GNUC_PURE;
void gtk_css_node_set_visible (GtkCssNode *cssnode,
gboolean visible);
gboolean gtk_css_node_get_visible (GtkCssNode *cssnode) G_GNUC_PURE;
void gtk_css_node_set_name (GtkCssNode *cssnode,
/*interned*/const char*name);
/*interned*/const char *gtk_css_node_get_name (GtkCssNode *cssnode) G_GNUC_PURE;
void gtk_css_node_set_widget_type (GtkCssNode *cssnode,
GType widget_type);
GType gtk_css_node_get_widget_type (GtkCssNode *cssnode) G_GNUC_PURE;
void gtk_css_node_set_id (GtkCssNode *cssnode,
/*interned*/const char*id);
/*interned*/const char *gtk_css_node_get_id (GtkCssNode *cssnode) G_GNUC_PURE;
void gtk_css_node_set_state (GtkCssNode *cssnode,
GtkStateFlags state_flags);
GtkStateFlags gtk_css_node_get_state (GtkCssNode *cssnode) G_GNUC_PURE;
void gtk_css_node_set_classes (GtkCssNode *cssnode,
const char **classes);
char ** gtk_css_node_get_classes (GtkCssNode *cssnode);
void gtk_css_node_add_class (GtkCssNode *cssnode,
GQuark style_class);
void gtk_css_node_remove_class (GtkCssNode *cssnode,
GQuark style_class);
gboolean gtk_css_node_has_class (GtkCssNode *cssnode,
GQuark style_class) G_GNUC_PURE;
const GQuark * gtk_css_node_list_classes (GtkCssNode *cssnode,
guint *n_classes);
const GtkCssNodeDeclaration *
gtk_css_node_get_declaration (GtkCssNode *cssnode) G_GNUC_PURE;
GtkCssStyle * gtk_css_node_get_style (GtkCssNode *cssnode) G_GNUC_PURE;
void gtk_css_node_invalidate_style_provider
(GtkCssNode *cssnode);
void gtk_css_node_invalidate_frame_clock
(GtkCssNode *cssnode,
gboolean just_timestamp);
void gtk_css_node_invalidate (GtkCssNode *cssnode,
GtkCssChange change);
void gtk_css_node_validate (GtkCssNode *cssnode);
gboolean gtk_css_node_init_matcher (GtkCssNode *cssnode,
GtkCssMatcher *matcher);
GtkWidgetPath * gtk_css_node_create_widget_path (GtkCssNode *cssnode);
const GtkWidgetPath * gtk_css_node_get_widget_path (GtkCssNode *cssnode) G_GNUC_PURE;
GtkStyleProvider * gtk_css_node_get_style_provider (GtkCssNode *cssnode) G_GNUC_PURE;
void gtk_css_node_print (GtkCssNode *cssnode,
GtkStyleContextPrintFlags flags,
GString *string,
guint indent);
G_END_DECLS
#endif /* __GTK_CSS_NODE_PRIVATE_H__ */
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