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gimp/app/gui/themes.c
Jehan 3e46549880 app: small ordering cleanup. 
No functional change, just some include cleanup, as well as reordering
with a private function made public.

Also adding a comment saying why we have somewhat unrelated code (about
color-scheme) in gui-unique.c. Maybe eventually we should generalize
this message-handling invible window code into a separate file, if it
becomes further used for more message handling.
2025-06-07 16:39:23 +02:00

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <stdlib.h>
#include <gegl.h>
#include <gtk/gtk.h>
#ifdef G_OS_WIN32
#include <windows.h>
#endif
#include "libgimpbase/gimpbase.h"
#include "libgimpconfig/gimpconfig.h"
#include "gui-types.h"
#include "config/gimpguiconfig.h"
#include "core/gimp.h"
#include "display/gimpimagewindow.h"
#include "widgets/gimpwidgets-utils.h"
#include "icon-themes.h"
#include "themes.h"
#include "gimp-intl.h"
/* local function prototypes */
static void themes_apply_theme (Gimp *gimp,
GimpGuiConfig *config);
static void themes_list_themes_foreach (gpointer key,
gpointer value,
gpointer data);
static gint themes_name_compare (const void *p1,
const void *p2);
static void themes_theme_paths_notify (GimpExtensionManager *manager,
GParamSpec *pspec,
Gimp *gimp);
#if defined(G_OS_UNIX) && ! defined(__APPLE__)
static void themes_theme_settings_portal_changed (GDBusProxy *proxy,
const gchar *sender_name,
const gchar *signal_name,
GVariant *parameters,
Gimp *gimp);
#endif
#ifdef G_OS_WIN32
static gboolean themes_win32_is_darkmode_active (void);
#endif
/* private variables */
static GHashTable *themes_hash = NULL;
static GtkStyleProvider *themes_style_provider = NULL;
#if defined(G_OS_UNIX) && ! defined(__APPLE__)
static GDBusProxy *themes_settings_portal = NULL;
#endif
/* public functions */
void
themes_init (Gimp *gimp)
{
GimpGuiConfig *config;
#if defined(G_OS_UNIX) && ! defined(__APPLE__)
GError *error = NULL;
#endif
g_return_if_fail (GIMP_IS_GIMP (gimp));
config = GIMP_GUI_CONFIG (gimp->config);
/* Check for theme extensions. */
themes_theme_paths_notify (gimp->extension_manager, NULL, gimp);
g_signal_connect (gimp->extension_manager, "notify::theme-paths",
G_CALLBACK (themes_theme_paths_notify),
gimp);
themes_style_provider = GTK_STYLE_PROVIDER (gtk_css_provider_new ());
/* Use GTK_STYLE_PROVIDER_PRIORITY_APPLICATION + 1 so theme files
* override default styles provided by widgets themselves.
*/
gtk_style_context_add_provider_for_screen (gdk_screen_get_default (),
themes_style_provider,
GTK_STYLE_PROVIDER_PRIORITY_APPLICATION + 1);
#if defined(G_OS_UNIX) && ! defined(__APPLE__)
themes_settings_portal =
g_dbus_proxy_new_for_bus_sync (G_BUS_TYPE_SESSION,
G_DBUS_PROXY_FLAGS_NONE, NULL,
"org.freedesktop.portal.Desktop",
"/org/freedesktop/portal/desktop",
"org.freedesktop.portal.Settings",
NULL, &error);
if (error)
{
g_printerr ("Could not access portal: %s", error->message);
g_clear_error (&error);
}
else
{
g_signal_connect (themes_settings_portal,
"g-signal::SettingChanged",
G_CALLBACK (themes_theme_settings_portal_changed),
gimp);
}
#endif
g_signal_connect (config, "notify::theme",
G_CALLBACK (themes_theme_change_notify),
gimp);
g_signal_connect_after (config, "notify::icon-theme",
G_CALLBACK (themes_theme_change_notify),
gimp);
g_signal_connect (config, "notify::theme-color-scheme",
G_CALLBACK (themes_theme_change_notify),
gimp);
g_signal_connect (config, "notify::prefer-symbolic-icons",
G_CALLBACK (themes_theme_change_notify),
gimp);
g_signal_connect (config, "notify::override-theme-icon-size",
G_CALLBACK (themes_theme_change_notify),
gimp);
g_signal_connect (config, "notify::custom-icon-size",
G_CALLBACK (themes_theme_change_notify),
gimp);
g_signal_connect (config, "notify::font-relative-size",
G_CALLBACK (themes_theme_change_notify),
gimp);
themes_theme_change_notify (config, NULL, gimp);
#ifdef G_OS_WIN32
themes_set_title_bar (gimp);
#endif
}
void
themes_exit (Gimp *gimp)
{
g_return_if_fail (GIMP_IS_GIMP (gimp));
if (themes_hash)
{
g_signal_handlers_disconnect_by_func (gimp->config,
themes_theme_change_notify,
gimp);
g_hash_table_destroy (themes_hash);
themes_hash = NULL;
}
g_clear_object (&themes_style_provider);
#if defined(G_OS_UNIX) && ! defined(__APPLE__)
g_clear_object (&themes_settings_portal);
#endif
}
gchar **
themes_list_themes (Gimp *gimp,
gint *n_themes)
{
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
g_return_val_if_fail (n_themes != NULL, NULL);
*n_themes = g_hash_table_size (themes_hash);
if (*n_themes > 0)
{
gchar **themes;
gchar **index;
themes = g_new0 (gchar *, *n_themes + 1);
index = themes;
g_hash_table_foreach (themes_hash, themes_list_themes_foreach, &index);
qsort (themes, *n_themes, sizeof (gchar *), themes_name_compare);
return themes;
}
return NULL;
}
GFile *
themes_get_theme_dir (Gimp *gimp,
const gchar *theme_name)
{
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
if (! theme_name)
theme_name = GIMP_CONFIG_DEFAULT_THEME;
return g_hash_table_lookup (themes_hash, theme_name);
}
GFile *
themes_get_theme_file (Gimp *gimp,
const gchar *first_component,
...)
{
GimpGuiConfig *gui_config;
GFile *file;
const gchar *component;
va_list args;
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
g_return_val_if_fail (first_component != NULL, NULL);
gui_config = GIMP_GUI_CONFIG (gimp->config);
file = g_object_ref (themes_get_theme_dir (gimp, gui_config->theme));
component = first_component;
va_start (args, first_component);
do
{
GFile *tmp = g_file_get_child (file, component);
g_object_unref (file);
file = tmp;
}
while ((component = va_arg (args, gchar *)));
va_end (args);
if (! g_file_query_exists (file, NULL))
{
g_object_unref (file);
file = g_object_ref (themes_get_theme_dir (gimp, NULL));
component = first_component;
va_start (args, first_component);
do
{
GFile *tmp = g_file_get_child (file, component);
g_object_unref (file);
file = tmp;
}
while ((component = va_arg (args, gchar *)));
va_end (args);
}
return file;
}
void
themes_theme_change_notify (GimpGuiConfig *config,
GParamSpec *pspec,
Gimp *gimp)
{
GFile *theme_css;
GError *error = NULL;
g_object_set (gtk_settings_get_for_screen (gdk_screen_get_default ()),
"gtk-application-prefer-dark-theme",
config->theme_scheme != GIMP_THEME_LIGHT,
NULL);
themes_apply_theme (gimp, config);
theme_css = gimp_directory_file ("theme.css", NULL);
if (gimp->be_verbose)
g_print ("Parsing '%s'\n",
gimp_file_get_utf8_name (theme_css));
if (! gtk_css_provider_load_from_file (GTK_CSS_PROVIDER (themes_style_provider),
theme_css, &error))
{
g_printerr ("%s: error parsing %s: %s\n", G_STRFUNC,
gimp_file_get_utf8_name (theme_css), error->message);
g_clear_error (&error);
}
g_object_unref (theme_css);
gtk_style_context_reset_widgets (gdk_screen_get_default ());
#ifdef G_OS_WIN32
themes_set_title_bar (gimp);
#endif
}
/* private functions */
static void
themes_apply_theme (Gimp *gimp,
GimpGuiConfig *config)
{
GFile *theme_css;
GOutputStream *output;
GError *error = NULL;
gboolean prefer_dark_theme;
GimpThemeScheme color_scheme;
g_return_if_fail (GIMP_IS_GIMP (gimp));
g_return_if_fail (GIMP_IS_GUI_CONFIG (config));
#if defined(G_OS_UNIX) && ! defined(__APPLE__)
if (themes_settings_portal && config->theme_scheme == GIMP_THEME_SYSTEM)
{
GVariant *tuple_variant;
GVariant *variant;
tuple_variant = g_dbus_proxy_call_sync (themes_settings_portal,
"ReadOne",
g_variant_new ("(ss)", "org.freedesktop.appearance", "color-scheme"),
G_DBUS_CALL_FLAGS_NONE,
G_MAXINT,
NULL,
&error);
if (error)
{
g_clear_error (&error);
tuple_variant = g_dbus_proxy_call_sync (themes_settings_portal,
"Read",
g_variant_new ("(ss)", "org.freedesktop.appearance", "color-scheme"),
G_DBUS_CALL_FLAGS_NONE,
G_MAXINT,
NULL,
&error);
if (!error)
{
/*
* Since the org.freedesktop.portal.Settings.Read method returns
* two layers of variant, re-assign the tuple.
* https://flatpak.github.io/xdg-desktop-portal/docs/doc-org.freedesktop.portal.Settings.html#org-freedesktop-portal-settings-read
*/
g_variant_get (tuple_variant, "(v)", &tuple_variant);
g_variant_get (tuple_variant, "v", &variant);
}
}
else
{
g_variant_get (tuple_variant, "(v)", &variant);
}
if (!error)
{
/*
* 1 means "Prefer dark", see:
* https://flatpak.github.io/xdg-desktop-portal/docs/doc-org.freedesktop.portal.Settings.html#description
*/
prefer_dark_theme = (g_variant_get_uint32 (variant) == 1);
/*
* Note that normally it's a tri-state flag, with a
* prefer-light and no-preference case too, except that it
* looks like both in KDE and GNOME at least, they only set
* prefer-dark or no-preference and for us, the latter should
* also mean dark.
* Therefore for this setting to actually mean something, we
* are currently breaking the spec by having no-preference
* mean prefer-light. This should be fixed if/when the main
* desktops actually implement all 3 options some day.
*/
color_scheme = prefer_dark_theme ? GIMP_THEME_DARK : GIMP_THEME_LIGHT;
}
else
{
g_printerr ("%s\n", error->message);
g_clear_error (&error);
color_scheme = (config->theme_scheme == GIMP_THEME_SYSTEM) ? GIMP_THEME_DARK : config->theme_scheme;
prefer_dark_theme = (color_scheme == GIMP_THEME_DARK ||
color_scheme == GIMP_THEME_GRAY);
}
}
else
#elif defined(G_OS_WIN32)
if (config->theme_scheme == GIMP_THEME_SYSTEM)
{
prefer_dark_theme = themes_win32_is_darkmode_active ();
color_scheme = prefer_dark_theme ? GIMP_THEME_DARK : GIMP_THEME_LIGHT;
}
else
#endif
{
color_scheme = (config->theme_scheme == GIMP_THEME_SYSTEM) ? GIMP_THEME_DARK : config->theme_scheme;
prefer_dark_theme = (color_scheme == GIMP_THEME_DARK ||
color_scheme == GIMP_THEME_GRAY);
}
g_object_set (gtk_settings_get_for_screen (gdk_screen_get_default ()),
"gtk-application-prefer-dark-theme", prefer_dark_theme,
NULL);
theme_css = gimp_directory_file ("theme.css", NULL);
if (gimp->be_verbose)
g_print ("Writing '%s'\n", gimp_file_get_utf8_name (theme_css));
output = G_OUTPUT_STREAM (g_file_replace (theme_css,
NULL, FALSE, G_FILE_CREATE_NONE,
NULL, &error));
if (! output)
{
gimp_message_literal (gimp, NULL, GIMP_MESSAGE_ERROR, error->message);
g_clear_error (&error);
}
else
{
GFile *theme_dir = themes_get_theme_dir (gimp, config->theme);
GFile *css_user;
GSList *css_files = NULL;
GSList *iter;
if (theme_dir)
{
GFile *file = NULL;
GFile *fallback;
GFile *light;
GFile *gray;
GFile *dark;
fallback = g_file_get_child (theme_dir, "gimp.css");
if (! g_file_query_exists (fallback, NULL))
g_clear_object (&fallback);
light = g_file_get_child (theme_dir, "gimp-light.css");
if (! g_file_query_exists (light, NULL))
g_clear_object (&light);
gray = g_file_get_child (theme_dir, "gimp-gray.css");
if (! g_file_query_exists (gray, NULL))
g_clear_object (&gray);
dark = g_file_get_child (theme_dir, "gimp-dark.css");
if (! g_file_query_exists (dark, NULL))
g_clear_object (&dark);
switch (color_scheme)
{
case GIMP_THEME_LIGHT:
if (light != NULL)
file = g_object_ref (light);
else if (fallback != NULL)
file = g_object_ref (fallback);
else if (gray != NULL)
file = g_object_ref (gray);
else if (dark != NULL)
file = g_object_ref (dark);
break;
case GIMP_THEME_GRAY:
if (gray != NULL)
file = g_object_ref (gray);
else if (fallback != NULL)
file = g_object_ref (fallback);
else if (dark != NULL)
file = g_object_ref (dark);
else if (light != NULL)
file = g_object_ref (light);
break;
case GIMP_THEME_DARK:
if (dark != NULL)
file = g_object_ref (dark);
else if (fallback != NULL)
file = g_object_ref (fallback);
else if (gray != NULL)
file = g_object_ref (gray);
else if (light != NULL)
file = g_object_ref (light);
break;
case GIMP_THEME_SYSTEM:
g_return_if_reached ();
}
if (file != NULL)
{
prefer_dark_theme = (file == dark || file == gray);
css_files = g_slist_prepend (css_files, file);
}
else
{
gimp_message (gimp, NULL, GIMP_MESSAGE_ERROR,
_("Invalid theme: directory '%s' contains neither "
"gimp-dark.css, gimp-gray.css, gimp-light.css nor gimp.css."),
gimp_file_get_utf8_name (theme_dir));
}
g_clear_object (&fallback);
g_clear_object (&light);
g_clear_object (&gray);
g_clear_object (&dark);
}
else
{
gchar *tmp;
tmp = g_build_filename (gimp_data_directory (),
"themes", "Default", "gimp.css",
NULL);
css_files = g_slist_prepend (css_files, g_file_new_for_path (tmp));
g_free (tmp);
switch (color_scheme)
{
case GIMP_THEME_LIGHT:
tmp = g_build_filename (gimp_data_directory (),
"themes", "Default", "gimp-light.css",
NULL);
break;
case GIMP_THEME_GRAY:
tmp = g_build_filename (gimp_data_directory (),
"themes", "Default", "gimp-gray.css",
NULL);
break;
case GIMP_THEME_DARK:
tmp = g_build_filename (gimp_data_directory (),
"themes", "Default", "gimp-dark.css",
NULL);
break;
case GIMP_THEME_SYSTEM:
g_return_if_reached ();
}
css_files = g_slist_prepend (css_files, g_file_new_for_path (tmp));
g_free (tmp);
}
css_files = g_slist_prepend (
css_files, gimp_sysconf_directory_file ("gimp.css", NULL));
css_user = gimp_directory_file ("gimp.css", NULL);
css_files = g_slist_prepend (
css_files, css_user);
css_files = g_slist_reverse (css_files);
g_output_stream_printf (
output, NULL, NULL, &error,
"/* GIMP theme.css\n"
" *\n"
" * This file is written on GIMP startup and on every theme change.\n"
" * It is NOT supposed to be edited manually. Edit your personal\n"
" * gimp.css file instead (%s).\n"
" */\n"
"\n",
gimp_file_get_utf8_name (css_user));
for (iter = css_files; ! error && iter; iter = g_slist_next (iter))
{
GFile *file = iter->data;
if (g_file_query_exists (file, NULL))
{
gchar *path;
path = g_file_get_uri (file);
g_output_stream_printf (
output, NULL, NULL, &error,
"@import url(\"%s\");\n",
path);
g_free (path);
}
}
if (! error)
{
g_output_stream_printf (
output, NULL, NULL, &error,
"\n"
"* { -gtk-icon-style: %s; }\n"
"\n"
"%s",
icon_themes_current_prefer_symbolic (gimp) ? "symbolic" : "regular",
prefer_dark_theme ? "/* prefer-dark-theme */\n" : "");
}
if (! error && config->override_icon_size)
{
const gchar *tool_icon_size = "large-toolbar";
const gchar *tab_icon_size = "small-toolbar";
const gchar *button_icon_size = "small-toolbar";
gint pal_padding = 4;
gint tab_padding = 1;
gint sep_padding = 1;
switch (config->custom_icon_size)
{
case GIMP_ICON_SIZE_SMALL:
tool_icon_size = "small-toolbar";
tab_icon_size = "small-toolbar";
button_icon_size = "small-toolbar";
pal_padding = 1;
tab_padding = 0;
sep_padding = 1;
break;
case GIMP_ICON_SIZE_MEDIUM:
tool_icon_size = "large-toolbar";
tab_icon_size = "small-toolbar";
button_icon_size = "small-toolbar";
pal_padding = 4;
tab_padding = 1;
sep_padding = 1;
break;
case GIMP_ICON_SIZE_LARGE:
tool_icon_size = "dnd";
tab_icon_size = "large-toolbar";
button_icon_size = "large-toolbar";
pal_padding = 5;
tab_padding = 5;
sep_padding = 2;
break;
case GIMP_ICON_SIZE_HUGE:
tool_icon_size = "dialog";
tab_icon_size = "dnd";
button_icon_size = "dnd";
pal_padding = 5;
tab_padding = 8;
sep_padding = 4;
break;
}
g_output_stream_printf (
output, NULL, NULL, &error,
"\n"
"* { -GimpToolPalette-tool-icon-size: %s; }"
"\n"
"* { -GimpDock-tool-icon-size: %s; }"
"\n"
"* { -GimpDockbook-tab-icon-size: %s; }"
"\n"
"* { -GimpColorNotebook-tab-icon-size: %s; }"
"\n"
"* { -GimpPrefsBox-tab-icon-size: %s; }"
"\n"
"* { -GimpEditor-button-icon-size: %s; }"
"\n"
"* { -GimpDisplayShell-button-icon-size: %s; }"
"\n"
"* { -GimpFgBgEditor-tool-icon-size: %s; }"
"\n"
"toolpalette button { padding: %dpx; }"
"\n"
"button, tab { padding: %dpx; }"
"\n"
"paned separator { padding: %dpx; }",
tool_icon_size, tool_icon_size, tab_icon_size, tab_icon_size,
tab_icon_size, button_icon_size, button_icon_size, tool_icon_size,
pal_padding, tab_padding, sep_padding);
}
if (! error && config->font_relative_size != 1.0)
{
/* Intermediate buffer for locale-independent float to string
* conversion. See issue #11048.
*/
gchar font_size_string[G_ASCII_DTOSTR_BUF_SIZE];
g_output_stream_printf (output, NULL, NULL, &error,
"\n"
"* { font-size: %srem; }",
g_ascii_dtostr (font_size_string,
G_ASCII_DTOSTR_BUF_SIZE,
config->font_relative_size));
}
if (! error)
{
g_output_stream_printf (
output, NULL, NULL, &error,
"\n\n"
"/* end of theme.css */\n");
}
if (error)
{
GCancellable *cancellable = g_cancellable_new ();
gimp_message (gimp, NULL, GIMP_MESSAGE_ERROR,
_("Error writing '%s': %s"),
gimp_file_get_utf8_name (theme_css), error->message);
g_clear_error (&error);
/* Cancel the overwrite initiated by g_file_replace(). */
g_cancellable_cancel (cancellable);
g_output_stream_close (output, cancellable, NULL);
g_object_unref (cancellable);
}
else if (! g_output_stream_close (output, NULL, &error))
{
gimp_message (gimp, NULL, GIMP_MESSAGE_ERROR,
_("Error closing '%s': %s"),
gimp_file_get_utf8_name (theme_css), error->message);
g_clear_error (&error);
}
g_slist_free_full (css_files, g_object_unref);
g_object_unref (output);
}
g_object_unref (theme_css);
}
static void
themes_list_themes_foreach (gpointer key,
gpointer value,
gpointer data)
{
gchar ***index = data;
**index = g_strdup ((gchar *) key);
(*index)++;
}
static gint
themes_name_compare (const void *p1,
const void *p2)
{
return strcmp (* (char **) p1, * (char **) p2);
}
static void
themes_theme_paths_notify (GimpExtensionManager *manager,
GParamSpec *pspec,
Gimp *gimp)
{
GimpGuiConfig *config;
g_return_if_fail (GIMP_IS_GIMP (gimp));
if (themes_hash)
g_hash_table_remove_all (themes_hash);
else
themes_hash = g_hash_table_new_full (g_str_hash,
g_str_equal,
g_free,
g_object_unref);
config = GIMP_GUI_CONFIG (gimp->config);
if (config->theme_path)
{
GList *path;
GList *list;
g_object_get (gimp->extension_manager,
"theme-paths", &path,
NULL);
path = g_list_copy_deep (path, (GCopyFunc) g_object_ref, NULL);
path = g_list_concat (path, gimp_config_path_expand_to_files (config->theme_path, NULL));
for (list = path; list; list = g_list_next (list))
{
GFile *dir = list->data;
GFileEnumerator *enumerator;
enumerator =
g_file_enumerate_children (dir,
G_FILE_ATTRIBUTE_STANDARD_NAME ","
G_FILE_ATTRIBUTE_STANDARD_IS_HIDDEN ","
G_FILE_ATTRIBUTE_STANDARD_TYPE,
G_FILE_QUERY_INFO_NONE,
NULL, NULL);
if (enumerator)
{
GFileInfo *info;
while ((info = g_file_enumerator_next_file (enumerator,
NULL, NULL)))
{
if (! g_file_info_get_attribute_boolean (info, G_FILE_ATTRIBUTE_STANDARD_IS_HIDDEN) &&
g_file_info_get_attribute_uint32 (info, G_FILE_ATTRIBUTE_STANDARD_TYPE) == G_FILE_TYPE_DIRECTORY)
{
GFile *file;
const gchar *name;
gchar *basename;
file = g_file_enumerator_get_child (enumerator, info);
name = gimp_file_get_utf8_name (file);
basename = g_path_get_basename (name);
if (gimp->be_verbose)
g_print ("Adding theme '%s' (%s)\n",
basename, name);
g_hash_table_insert (themes_hash, basename, file);
}
g_object_unref (info);
}
g_object_unref (enumerator);
}
}
g_list_free_full (path, (GDestroyNotify) g_object_unref);
}
}
#if defined(G_OS_UNIX) && ! defined(__APPLE__)
static void
themes_theme_settings_portal_changed (GDBusProxy *proxy,
const gchar *sender_name,
const gchar *signal_name,
GVariant *parameters,
Gimp *gimp)
{
const char *namespace;
const char *name;
GVariant *value = NULL;
if (g_strcmp0 (signal_name, "SettingChanged"))
return;
g_variant_get (parameters, "(&s&sv)", &namespace, &name, &value);
if (g_strcmp0 (namespace, "org.freedesktop.appearance") == 0 &&
g_strcmp0 (name, "color-scheme") == 0)
{
themes_theme_change_notify (GIMP_GUI_CONFIG (gimp->config), NULL, gimp);
}
g_variant_unref (value);
}
#endif
#ifdef G_OS_WIN32
void
themes_set_title_bar (Gimp *gimp)
{
GList *windows = gimp_get_image_windows (gimp);
GList *iter;
for (iter = windows; iter; iter = g_list_next (iter))
{
GtkWidget *window = GTK_WIDGET (windows->data);
gimp_window_set_title_bar_theme (gimp, window);
}
if (windows)
g_list_free (windows);
}
static gboolean
themes_win32_is_darkmode_active (void)
{
DWORD val = 0;
DWORD val_size = sizeof (val);
LSTATUS status;
status = RegGetValueA(HKEY_CURRENT_USER,
"Software\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize",
"AppsUseLightTheme",
RRF_RT_REG_DWORD,
NULL,
&val,
&val_size);
return status == ERROR_SUCCESS && val == 0;
}
#endif
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