gnome-shell/src/st/st-theme-node-private.h
Carlos Garnacho 6a42d77261 st: Track stylesheet changes on the StThemeContext
Instead of every individual StThemeNode. There are essentially two kinds
of theme nodes: Those we create for lookups, and those interned by the
theme context and used by StWidgets. Listening to the signal on the former
is pointless as they are short lived and not meant to be really used for
drawing. So it is only essential to track stylesheet changes in those we
intern for later use.

This change does precisely that, it lets the StThemeContext track the
stylesheet changes and let all known theme nodes reset their state for
it.

The internal array holding all connected handlers for this signal in glib
was about the biggest single allocation made in gnome-shell, as interned
theme nodes nodes are around the 4 to 5 digit numbers. This essentially
makes it disappear.

This however means that widgets that are explicitly set a theme through
st_widget_set_theme() don't get their theme node implicitly updated.
There's little reasons to use that API, so perhaps this is an acceptable
tradeoff.

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/779
2019-11-05 12:36:28 +00:00

131 lines
3.4 KiB
C

/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* st-theme-node-private.h: private structures and functions for StThemeNode
*
* Copyright 2009, 2010 Red Hat, Inc.
* Copyright 2011 Quentin "Sardem FF7" Glidic
*
* This program 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 2.1 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope 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 program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __ST_THEME_NODE_PRIVATE_H__
#define __ST_THEME_NODE_PRIVATE_H__
#include <gdk/gdk.h>
#include "st-theme-node.h"
#include <libcroco/libcroco.h>
#include "st-types.h"
G_BEGIN_DECLS
struct _StThemeNode {
GObject parent;
StThemeContext *context;
StThemeNode *parent_node;
StTheme *theme;
PangoFontDescription *font_desc;
ClutterColor background_color;
/* If gradient is set, then background_color is the gradient start */
StGradientType background_gradient_type;
ClutterColor background_gradient_end;
int background_position_x;
int background_position_y;
StBackgroundSize background_size;
gint background_size_w;
gint background_size_h;
ClutterColor foreground_color;
ClutterColor border_color[4];
ClutterColor outline_color;
int border_width[4];
int border_radius[4];
int outline_width;
guint padding[4];
guint margin[4];
int width;
int height;
int min_width;
int min_height;
int max_width;
int max_height;
int transition_duration;
GFile *background_image;
StBorderImage *border_image;
StShadow *box_shadow;
StShadow *background_image_shadow;
StShadow *text_shadow;
StIconColors *icon_colors;
GType element_type;
char *element_id;
GStrv element_classes;
GStrv pseudo_classes;
char *inline_style;
CRDeclaration **properties;
int n_properties;
/* We hold onto these separately so we can destroy them on finalize */
CRDeclaration *inline_properties;
guint background_position_set : 1;
guint background_repeat : 1;
guint properties_computed : 1;
guint geometry_computed : 1;
guint background_computed : 1;
guint foreground_computed : 1;
guint border_image_computed : 1;
guint box_shadow_computed : 1;
guint background_image_shadow_computed : 1;
guint text_shadow_computed : 1;
guint link_type : 2;
guint rendered_once : 1;
guint cached_textures : 1;
int box_shadow_min_width;
int box_shadow_min_height;
guint stylesheets_changed_id;
CoglPipeline *border_slices_texture;
CoglPipeline *border_slices_pipeline;
CoglPipeline *background_texture;
CoglPipeline *background_pipeline;
CoglPipeline *background_shadow_pipeline;
CoglPipeline *color_pipeline;
StThemeNodePaintState cached_state;
};
void _st_theme_node_ensure_background (StThemeNode *node);
void _st_theme_node_ensure_geometry (StThemeNode *node);
void _st_theme_node_apply_margins (StThemeNode *node,
ClutterActor *actor);
void _st_theme_node_reset_for_stylesheet_change (StThemeNode *node);
G_END_DECLS
#endif /* __ST_THEME_NODE_PRIVATE_H__ */