/* GTK - The GIMP Toolkit * Copyright (C) 2014 Benjamin Otte * * 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 . */ #ifndef __GTK_CSS_NODE_PRIVATE_H__ #define __GTK_CSS_NODE_PRIVATE_H__ #include "gtkcssnodedeclarationprivate.h" #include "gtkbitmaskprivate.h" #include "gtkcsstypesprivate.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; 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, GtkCssStyle *old_style, GtkCssStyle *new_style); 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 */ GtkStyleProviderPrivate *(* 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; 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); void gtk_css_node_reverse_children (GtkCssNode *cssnode); GtkCssNode * gtk_css_node_get_parent (GtkCssNode *cssnode); GtkCssNode * gtk_css_node_get_first_child (GtkCssNode *cssnode); GtkCssNode * gtk_css_node_get_last_child (GtkCssNode *cssnode); 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); void gtk_css_node_set_id (GtkCssNode *cssnode, const char *id); const char * gtk_css_node_get_id (GtkCssNode *cssnode); void gtk_css_node_set_state (GtkCssNode *cssnode, GtkStateFlags state_flags); GtkStateFlags gtk_css_node_get_state (GtkCssNode *cssnode); void gtk_css_node_set_junction_sides (GtkCssNode *cssnode, GtkJunctionSides junction_sides); GtkJunctionSides gtk_css_node_get_junction_sides (GtkCssNode *cssnode); 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); const GQuark * gtk_css_node_list_classes (GtkCssNode *cssnode, guint *n_classes); void gtk_css_node_add_region (GtkCssNode *cssnode, GQuark region, GtkRegionFlags flags); void gtk_css_node_remove_region (GtkCssNode *cssnode, GQuark region); gboolean gtk_css_node_has_region (GtkCssNode *cssnode, GQuark region, GtkRegionFlags *out_flags); GList * gtk_css_node_list_regions (GtkCssNode *cssnode); const GtkCssNodeDeclaration * gtk_css_node_get_declaration (GtkCssNode *cssnode); GtkCssStyle * gtk_css_node_get_style (GtkCssNode *cssnode); 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); GtkStyleProviderPrivate *gtk_css_node_get_style_provider(GtkCssNode *cssnode); G_END_DECLS #endif /* __GTK_CSS_NODE_PRIVATE_H__ */