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gtk2/gtk/gtksettings.c
Matthias Clasen 83a5611ce8 settings: Modernize the code 
Drop some things that are no longer relevant,
and make this code look like modern GObject code.
2023-01-17 15:19:50 -05:00

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/* GTK - The GIMP Toolkit
* Copyright (C) 2000 Red Hat, Inc.
*
* 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/>.Free
*/
#include "config.h"
#include "gtksettingsprivate.h"
#include "gtkcssproviderprivate.h"
#include "gtkprivate.h"
#include "gtkscrolledwindow.h"
#include "deprecated/gtkstylecontextprivate.h"
#include "gtkstyleproviderprivate.h"
#include "gtktypebuiltins.h"
#include "gtkversion.h"
#include "gtkwidgetprivate.h"
#include "gdk/gdkdisplayprivate.h"
#include <string.h>
#ifdef GDK_WINDOWING_X11
#include "x11/gdkx.h"
#include <pango/pangofc-fontmap.h>
#endif
#ifdef GDK_WINDOWING_WAYLAND
#include "wayland/gdkwayland.h"
#include <pango/pangofc-fontmap.h>
#endif
#ifdef GDK_WINDOWING_BROADWAY
#include "broadway/gdkbroadway.h"
#endif
#ifdef GDK_WINDOWING_MACOS
#include "macos/gdkmacos.h"
#endif
#ifdef GDK_WINDOWING_WIN32
#include "win32/gdkwin32.h"
#endif
#ifdef GDK_WINDOWING_MACOS
#define PRINT_PREVIEW_COMMAND "open -b com.apple.Preview %f"
#else
#define PRINT_PREVIEW_COMMAND "evince --unlink-tempfile --preview --print-settings %s %f"
#endif
/**
* GtkSettings:
*
* `GtkSettings` provides a mechanism to share global settings between
* applications.
*
* On the X window system, this sharing is realized by an
* [XSettings](http://www.freedesktop.org/wiki/Specifications/xsettings-spec)
* manager that is usually part of the desktop environment, along with
* utilities that let the user change these settings.
*
* On Wayland, the settings are obtained either via a settings portal,
* or by reading desktop settings from DConf.
*
* In the absence of these sharing mechanisms, GTK reads default values for
* settings from `settings.ini` files in `/etc/gtk-4.0`, `$XDG_CONFIG_DIRS/gtk-4.0`
* and `$XDG_CONFIG_HOME/gtk-4.0`. These files must be valid key files (see
* `GKeyFile`), and have a section called Settings. Themes can also provide
* default values for settings by installing a `settings.ini` file
* next to their `gtk.css` file.
*
* Applications can override system-wide settings by setting the property
* of the `GtkSettings` object with g_object_set(). This should be restricted
* to special cases though; `GtkSettings` are not meant as an application
* configuration facility.
*
* There is one `GtkSettings` instance per display. It can be obtained with
* [func@Gtk.Settings.get_for_display], but in many cases, it is more
* convenient to use [method@Gtk.Widget.get_settings].
*/
/* --- typedefs --- */
typedef struct _GtkSettingsValue GtkSettingsValue;
/*< private >
* GtkSettingsValue:
* @origin: Origin should be something like “filename:linenumber” for
* rc files, or e.g. “XProperty” for other sources.
* @value: Valid types are LONG, DOUBLE and STRING corresponding to
* the token parsed, or a GSTRING holding an unparsed statement
*/
struct _GtkSettingsValue
{
/* origin should be something like "filename:linenumber" for rc files,
* or e.g. "XProperty" for other sources
*/
char *origin;
/* valid types are LONG, DOUBLE and STRING corresponding to the token parsed,
* or a GSTRING holding an unparsed statement
*/
GValue value;
/* the settings source */
GtkSettingsSource source;
};
typedef struct _GtkSettingsClass GtkSettingsClass;
typedef struct _GtkSettingsPropertyValue GtkSettingsPropertyValue;
struct _GtkSettings
{
GObject parent_instance;
GData *queued_settings; /* of type GtkSettingsValue* */
GtkSettingsPropertyValue *property_values;
GdkDisplay *display;
GSList *style_cascades;
GtkCssProvider *theme_provider;
int font_size;
gboolean font_size_absolute;
char *font_family;
cairo_font_options_t *font_options;
};
struct _GtkSettingsClass
{
GObjectClass parent_class;
};
struct _GtkSettingsPropertyValue
{
GValue value;
GtkSettingsSource source;
};
enum {
PROP_0,
PROP_DOUBLE_CLICK_TIME,
PROP_DOUBLE_CLICK_DISTANCE,
PROP_CURSOR_BLINK,
PROP_CURSOR_BLINK_TIME,
PROP_CURSOR_BLINK_TIMEOUT,
PROP_SPLIT_CURSOR,
PROP_CURSOR_ASPECT_RATIO,
PROP_THEME_NAME,
PROP_ICON_THEME_NAME,
PROP_DND_DRAG_THRESHOLD,
PROP_FONT_NAME,
PROP_XFT_ANTIALIAS,
PROP_XFT_HINTING,
PROP_XFT_HINTSTYLE,
PROP_XFT_RGBA,
PROP_XFT_DPI,
PROP_HINT_FONT_METRICS,
PROP_CURSOR_THEME_NAME,
PROP_CURSOR_THEME_SIZE,
PROP_ALTERNATIVE_BUTTON_ORDER,
PROP_ALTERNATIVE_SORT_ARROWS,
PROP_ENABLE_ANIMATIONS,
PROP_ERROR_BELL,
PROP_PRINT_BACKENDS,
PROP_PRINT_PREVIEW_COMMAND,
PROP_ENABLE_ACCELS,
PROP_IM_MODULE,
PROP_RECENT_FILES_MAX_AGE,
PROP_FONTCONFIG_TIMESTAMP,
PROP_SOUND_THEME_NAME,
PROP_ENABLE_INPUT_FEEDBACK_SOUNDS,
PROP_ENABLE_EVENT_SOUNDS,
PROP_PRIMARY_BUTTON_WARPS_SLIDER,
PROP_APPLICATION_PREFER_DARK_THEME,
PROP_ENTRY_SELECT_ON_FOCUS,
PROP_ENTRY_PASSWORD_HINT_TIMEOUT,
PROP_LABEL_SELECT_ON_FOCUS,
PROP_SHELL_SHOWS_APP_MENU,
PROP_SHELL_SHOWS_MENUBAR,
PROP_SHELL_SHOWS_DESKTOP,
PROP_DECORATION_LAYOUT,
PROP_TITLEBAR_DOUBLE_CLICK,
PROP_TITLEBAR_MIDDLE_CLICK,
PROP_TITLEBAR_RIGHT_CLICK,
PROP_DIALOGS_USE_HEADER,
PROP_ENABLE_PRIMARY_PASTE,
PROP_RECENT_FILES_ENABLED,
PROP_LONG_PRESS_TIME,
PROP_KEYNAV_USE_CARET,
PROP_OVERLAY_SCROLLING,
NUM_PROPERTIES
};
static GParamSpec *pspecs[NUM_PROPERTIES] = { NULL, };
/* --- prototypes --- */
static void gtk_settings_provider_iface_init (GtkStyleProviderInterface *iface);
static void gtk_settings_finalize (GObject *object);
static void gtk_settings_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static void gtk_settings_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_settings_notify (GObject *object,
GParamSpec *pspec);
static void settings_update_double_click (GtkSettings *settings);
static void settings_update_cursor_theme (GtkSettings *settings);
static void settings_update_font_options (GtkSettings *settings);
static void settings_update_font_values (GtkSettings *settings);
static gboolean settings_update_fontconfig (GtkSettings *settings);
static void settings_update_theme (GtkSettings *settings);
static gboolean settings_update_xsetting (GtkSettings *settings,
GParamSpec *pspec,
gboolean force);
static void settings_update_xsettings (GtkSettings *settings);
static void gtk_settings_load_from_key_file (GtkSettings *settings,
const char *path,
GtkSettingsSource source);
static void settings_update_provider (GdkDisplay *display,
GtkCssProvider **old,
GtkCssProvider *new);
/* --- variables --- */
static GQuark quark_gtk_settings = 0;
static GPtrArray *display_settings;
G_DEFINE_TYPE_EXTENDED (GtkSettings, gtk_settings, G_TYPE_OBJECT, 0,
G_IMPLEMENT_INTERFACE (GTK_TYPE_STYLE_PROVIDER,
gtk_settings_provider_iface_init));
/* --- functions --- */
static void
gtk_settings_init (GtkSettings *settings)
{
guint i = 0;
char *path;
const char * const *config_dirs;
g_datalist_init (&settings->queued_settings);
settings->style_cascades = g_slist_prepend (NULL, _gtk_style_cascade_new ());
settings->theme_provider = gtk_css_provider_new ();
settings->property_values = g_new0 (GtkSettingsPropertyValue, NUM_PROPERTIES - 1);
g_object_freeze_notify (G_OBJECT (settings));
for (i = 1; i < NUM_PROPERTIES; i++)
{
GParamSpec *pspec = pspecs[i];
GType value_type = G_PARAM_SPEC_VALUE_TYPE (pspec);
g_value_init (&settings->property_values[i - 1].value, value_type);
g_param_value_set_default (pspec, &settings->property_values[i - 1].value);
g_object_notify_by_pspec (G_OBJECT (settings), pspec);
settings->property_values[i - 1].source = GTK_SETTINGS_SOURCE_DEFAULT;
}
path = g_build_filename (_gtk_get_data_prefix (), "share", "gtk-4.0", "settings.ini", NULL);
gtk_settings_load_from_key_file (settings, path, GTK_SETTINGS_SOURCE_DEFAULT);
g_free (path);
path = g_build_filename (_gtk_get_sysconfdir (), "gtk-4.0", "settings.ini", NULL);
gtk_settings_load_from_key_file (settings, path, GTK_SETTINGS_SOURCE_DEFAULT);
g_free (path);
config_dirs = g_get_system_config_dirs ();
for (i = 0; config_dirs[i] != NULL; i++)
{
path = g_build_filename (config_dirs[i], "gtk-4.0", "settings.ini", NULL);
gtk_settings_load_from_key_file (settings, path, GTK_SETTINGS_SOURCE_DEFAULT);
g_free (path);
}
path = g_build_filename (g_get_user_config_dir (), "gtk-4.0", "settings.ini", NULL);
gtk_settings_load_from_key_file (settings, path, GTK_SETTINGS_SOURCE_DEFAULT);
g_free (path);
g_object_thaw_notify (G_OBJECT (settings));
/* ensure that derived fields are initialized */
if (settings->font_size == 0)
settings_update_font_values (settings);
}
static void
gtk_settings_class_init (GtkSettingsClass *class)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (class);
guint result G_GNUC_UNUSED;
gobject_class->finalize = gtk_settings_finalize;
gobject_class->get_property = gtk_settings_get_property;
gobject_class->set_property = gtk_settings_set_property;
gobject_class->notify = gtk_settings_notify;
quark_gtk_settings = g_quark_from_static_string ("gtk-settings");
/**
* GtkSettings:gtk-double-click-time:
*
* The maximum time to allow between two clicks for them to be considered
* a double click, in milliseconds.
*/
pspecs[PROP_DOUBLE_CLICK_TIME] = g_param_spec_int ("gtk-double-click-time", NULL, NULL,
0, G_MAXINT, 400,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-double-click-distance:
*
* The maximum distance allowed between two clicks for them to be considered
* a double click, in pixels.
*/
pspecs[PROP_DOUBLE_CLICK_DISTANCE] = g_param_spec_int ("gtk-double-click-distance", NULL, NULL,
0, G_MAXINT, 5,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-cursor-blink:
*
* Whether the cursor should blink.
*
* Also see the [property@Gtk.Settings:gtk-cursor-blink-timeout] setting,
* which allows more flexible control over cursor blinking.
*/
pspecs[PROP_CURSOR_BLINK] = g_param_spec_boolean ("gtk-cursor-blink", NULL, NULL,
TRUE,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-cursor-blink-time:
*
* Length of the cursor blink cycle, in milliseconds.
*/
pspecs[PROP_CURSOR_BLINK_TIME] = g_param_spec_int ("gtk-cursor-blink-time", NULL, NULL,
100, G_MAXINT, 1200,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-cursor-blink-timeout:
*
* Time after which the cursor stops blinking, in seconds.
*
* The timer is reset after each user interaction.
*
* Setting this to zero has the same effect as setting
* [property@Gtk.Settings:gtk-cursor-blink] to %FALSE.
*/
pspecs[PROP_CURSOR_BLINK_TIMEOUT] = g_param_spec_int ("gtk-cursor-blink-timeout", NULL, NULL,
1, G_MAXINT, 10,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-split-cursor:
*
* Whether two cursors should be displayed for mixed left-to-right and
* right-to-left text.
*/
pspecs[PROP_SPLIT_CURSOR] = g_param_spec_boolean ("gtk-split-cursor", NULL, NULL,
FALSE,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-cursor-aspect-ratio:
*
* The aspect ratio of the text caret.
*/
pspecs[PROP_CURSOR_ASPECT_RATIO] = g_param_spec_double ("gtk-cursor-aspect-ratio", NULL, NULL,
0.0, 1.0, 0.04,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-theme-name:
*
* Name of the theme to load.
*
* See [class@Gtk.CssProvider] for details about how
* GTK finds the CSS stylesheet for a theme.
*/
pspecs[PROP_THEME_NAME] = g_param_spec_string ("gtk-theme-name", NULL, NULL,
DEFAULT_THEME_NAME,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-icon-theme-name:
*
* Name of the icon theme to use.
*
* See [class@Gtk.IconTheme] for details about how
* GTK handles icon themes.
*/
pspecs[PROP_ICON_THEME_NAME] = g_param_spec_string ("gtk-icon-theme-name", NULL, NULL,
DEFAULT_ICON_THEME,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-dnd-drag-threshold:
*
* The number of pixels the cursor can move before dragging.
*/
pspecs[PROP_DND_DRAG_THRESHOLD] = g_param_spec_int ("gtk-dnd-drag-threshold", NULL, NULL,
1, G_MAXINT, 8,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-font-name:
*
* The default font to use.
*
* GTK uses the family name and size from this string.
*/
pspecs[PROP_FONT_NAME] = g_param_spec_string ("gtk-font-name", NULL, NULL,
"Sans 10",
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-xft-antialias:
*
* Whether to antialias fonts.
*
* The values are 0 for no, 1 for yes, or -1 for the system default.
*/
pspecs[PROP_XFT_ANTIALIAS] = g_param_spec_int ("gtk-xft-antialias", NULL, NULL,
-1, 1, -1,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-xft-hinting:
*
* Whether to enable font hinting.
*
* The values are 0 for no, 1 for yes, or -1 for the system default.
*/
pspecs[PROP_XFT_HINTING] = g_param_spec_int ("gtk-xft-hinting", NULL, NULL,
-1, 1, -1,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-xft-hintstyle:
*
* What degree of font hinting to use.
*
* The possible vaues are hintnone, hintslight,
* hintmedium, hintfull.
*/
pspecs[PROP_XFT_HINTSTYLE] = g_param_spec_string ("gtk-xft-hintstyle", NULL, NULL,
NULL,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-xft-rgba:
*
* The type of subpixel antialiasing to use.
*
* The possible values are none, rgb, bgr, vrgb, vbgr.
*/
pspecs[PROP_XFT_RGBA] = g_param_spec_string ("gtk-xft-rgba", NULL, NULL,
NULL,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-xft-dpi:
*
* The font resolution, in 1024 * dots/inch.
*
* -1 to use the default value.
*/
pspecs[PROP_XFT_DPI] = g_param_spec_int ("gtk-xft-dpi", NULL, NULL,
-1, 1024*1024, -1,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-hint-font-metrics:
*
* Whether hinting should be applied to font metrics.
*
* Note that this also turns off subpixel positioning of glyphs,
* since it conflicts with metrics hinting.
*
* Since: 4.6
*/
pspecs[PROP_HINT_FONT_METRICS] = g_param_spec_boolean ("gtk-hint-font-metrics", NULL, NULL,
FALSE,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-cursor-theme-name:
*
* Name of the cursor theme to use.
*
* Use %NULL to use the default theme.
*/
pspecs[PROP_CURSOR_THEME_NAME] = g_param_spec_string ("gtk-cursor-theme-name", NULL, NULL,
NULL,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-cursor-theme-size:
*
* The size to use for cursors.
*
* 0 means to use the default size.
*/
pspecs[PROP_CURSOR_THEME_SIZE] = g_param_spec_int ("gtk-cursor-theme-size", NULL, NULL,
0, 128, 0,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-alternative-button-order:
*
* Whether buttons in dialogs should use the alternative button order.
*/
pspecs[PROP_ALTERNATIVE_BUTTON_ORDER] = g_param_spec_boolean ("gtk-alternative-button-order", NULL, NULL,
FALSE,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-alternative-sort-arrows:
*
* Controls the direction of the sort indicators in sorted list and tree
* views.
*
* By default an arrow pointing down means the column is sorted
* in ascending order. When set to %TRUE, this order will be inverted.
*/
pspecs[PROP_ALTERNATIVE_SORT_ARROWS] = g_param_spec_boolean ("gtk-alternative-sort-arrows", NULL, NULL,
FALSE,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-enable-animations:
*
* Whether to enable toolkit-wide animations.
*/
pspecs[PROP_ENABLE_ANIMATIONS] = g_param_spec_boolean ("gtk-enable-animations", NULL, NULL,
TRUE,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-error-bell:
*
* When %TRUE, keyboard navigation and other input-related errors
* will cause a beep.
*
* Since the error bell is implemented using gdk_surface_beep(), the
* windowing system may offer ways to configure the error bell in many
* ways, such as flashing the window or similar visual effects.
*/
pspecs[PROP_ERROR_BELL] = g_param_spec_boolean ("gtk-error-bell", NULL, NULL,
TRUE,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-print-backends:
*
* A comma-separated list of print backends to use in the print
* dialog.
*
* Available print backends depend on the GTK installation,
* and may include "file", "cups", "lpr" or "papi".
*/
pspecs[PROP_PRINT_BACKENDS] = g_param_spec_string ("gtk-print-backends", NULL, NULL,
GTK_PRINT_BACKENDS,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-print-preview-command:
*
* A command to run for displaying the print preview.
*
* The command should contain a `%f` placeholder, which will get
* replaced by the path to the pdf file. The command may also
* contain a `%s` placeholder, which will get replaced by the
* path to a file containing the print settings in the format
* produced by [method@Gtk.PrintSettings.to_file].
*
* The preview application is responsible for removing the pdf
* file and the print settings file when it is done.
*/
pspecs[PROP_PRINT_PREVIEW_COMMAND] = g_param_spec_string ("gtk-print-preview-command", NULL, NULL,
PRINT_PREVIEW_COMMAND,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-enable-accels:
*
* Whether menu items should have visible accelerators which can be
* activated.
*/
pspecs[PROP_ENABLE_ACCELS] = g_param_spec_boolean ("gtk-enable-accels", NULL, NULL,
TRUE,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-im-module:
*
* Which IM (input method) module should be used by default.
*
* This is the input method that will be used if the user has not
* explicitly chosen another input method from the IM context menu.
* This also can be a colon-separated list of input methods, which GTK
* will try in turn until it finds one available on the system.
*
* See [class@Gtk.IMContext].
*/
pspecs[PROP_IM_MODULE] = g_param_spec_string ("gtk-im-module", NULL, NULL,
NULL,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-recent-files-max-age:
*
* The maximum age, in days, of the items inside the recently used
* resources list.
*
* Items older than this setting will be excised from the list.
* If set to 0, the list will always be empty; if set to -1, no
* item will be removed.
*/
pspecs[PROP_RECENT_FILES_MAX_AGE] = g_param_spec_int ("gtk-recent-files-max-age", NULL, NULL,
-1, G_MAXINT,
30,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-fontconfig-timestamp:
*
* Timestamp of the current fontconfig configuration.
*/
pspecs[PROP_FONTCONFIG_TIMESTAMP] = g_param_spec_uint ("gtk-fontconfig-timestamp", NULL, NULL,
0, G_MAXUINT, 0,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-sound-theme-name:
*
* The XDG sound theme to use for event sounds.
*
* See the [Sound Theme Specifications](http://www.freedesktop.org/wiki/Specifications/sound-theme-spec)
* for more information on event sounds and sound themes.
*
* GTK itself does not support event sounds, you have to use
* a loadable module like the one that comes with libcanberra.
*/
pspecs[PROP_SOUND_THEME_NAME] = g_param_spec_string ("gtk-sound-theme-name", NULL, NULL,
"freedesktop",
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-enable-input-feedback-sounds:
*
* Whether to play event sounds as feedback to user input.
*
* See the [Sound Theme Specifications](http://www.freedesktop.org/wiki/Specifications/sound-theme-spec)
* for more information on event sounds and sound themes.
*
* GTK itself does not support event sounds, you have to use a loadable
* module like the one that comes with libcanberra.
*/
pspecs[PROP_ENABLE_INPUT_FEEDBACK_SOUNDS] = g_param_spec_boolean ("gtk-enable-input-feedback-sounds", NULL, NULL,
TRUE,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-enable-event-sounds:
*
* Whether to play any event sounds at all.
*
* See the [Sound Theme Specifications](http://www.freedesktop.org/wiki/Specifications/sound-theme-spec)
* for more information on event sounds and sound themes.
*
* GTK itself does not support event sounds, you have to use a loadable
* module like the one that comes with libcanberra.
*/
pspecs[PROP_ENABLE_EVENT_SOUNDS] = g_param_spec_boolean ("gtk-enable-event-sounds", NULL, NULL,
TRUE,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-primary-button-warps-slider:
*
* If the value of this setting is %TRUE, clicking the primary button in a
* `GtkRange` trough will move the slider, and hence set the range’s value, to
* the point that you clicked.
*
* If it is %FALSE, a primary click will cause the slider/value to move
* by the range’s page-size towards the point clicked.
*
* Whichever action you choose for the primary button, the other action will
* be available by holding Shift and primary-clicking, or clicking the middle
* mouse button.
*/
pspecs[PROP_PRIMARY_BUTTON_WARPS_SLIDER] = g_param_spec_boolean ("gtk-primary-button-warps-slider", NULL, NULL,
TRUE,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-application-prefer-dark-theme:
*
* Whether the application prefers to use a dark theme.
*
* If a GTK theme includes a dark variant, it will be used
* instead of the configured theme.
*
* Some applications benefit from minimizing the amount of light
* pollution that interferes with the content. Good candidates for
* dark themes are photo and video editors that make the actual
* content get all the attention and minimize the distraction of
* the chrome.
*
* Dark themes should not be used for documents, where large spaces
* are white/light and the dark chrome creates too much contrast
* (web browser, text editor...).
*/
pspecs[PROP_APPLICATION_PREFER_DARK_THEME] = g_param_spec_boolean ("gtk-application-prefer-dark-theme", NULL, NULL,
FALSE,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gkt-entry-select-on-focus:
*
* Whether to select the contents of an entry when it is focused.
*/
pspecs[PROP_ENTRY_SELECT_ON_FOCUS] = g_param_spec_boolean ("gtk-entry-select-on-focus", NULL, NULL,
TRUE,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-entry-password-hint-timeout:
*
* How long to show the last input character in hidden
* entries.
*
* This value is in milliseconds. 0 disables showing the
* last char. 600 is a good value for enabling it.
*/
pspecs[PROP_ENTRY_PASSWORD_HINT_TIMEOUT] = g_param_spec_uint ("gtk-entry-password-hint-timeout", NULL, NULL,
0, G_MAXUINT,
0,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-label-select-on-focus:
*
* Whether to select the contents of a selectable
* label when it is focused.
*/
pspecs[PROP_LABEL_SELECT_ON_FOCUS] = g_param_spec_boolean ("gtk-label-select-on-focus", NULL, NULL,
TRUE,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-shell-shows-app-menu:
*
* Set to %TRUE if the desktop environment is displaying
* the app menu, %FALSE if the app should display it itself.
*/
pspecs[PROP_SHELL_SHOWS_APP_MENU] = g_param_spec_boolean ("gtk-shell-shows-app-menu", NULL, NULL,
FALSE,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-shell-shows-menubar:
*
* Set to %TRUE if the desktop environment is displaying
* the menubar, %FALSE if the app should display it itself.
*/
pspecs[PROP_SHELL_SHOWS_MENUBAR] = g_param_spec_boolean ("gtk-shell-shows-menubar", NULL, NULL,
FALSE,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-shell-shows-desktop:
*
* Set to %TRUE if the desktop environment is displaying
* the desktop folder, %FALSE if not.
*/
pspecs[PROP_SHELL_SHOWS_DESKTOP] = g_param_spec_boolean ("gtk-shell-shows-desktop", NULL, NULL,
TRUE,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-decoration-layout:
*
* Determines which buttons should be put in the
* titlebar of client-side decorated windows, and whether they
* should be placed on the left or right.
*
* The format of the string is button names, separated by commas.
* A colon separates the buttons that should appear on the left
* from those on the right. Recognized button names are minimize,
* maximize, close, icon (the window icon) and menu (a menu button
* for the fallback app menu).
*
* For example, "menu:minimize,maximize,close" specifies a menu
* on the left, and minimize, maximize and close buttons on the right.
*
* Note that buttons will only be shown when they are meaningful.
* E.g. a menu button only appears when the desktop shell does not
* show the app menu, and a close button only appears on a window
* that can be closed.
*
* Also note that the setting can be overridden with the
* [property@Gtk.HeaderBar:decoration-layout] property.
*/
pspecs[PROP_DECORATION_LAYOUT] = g_param_spec_string ("gtk-decoration-layout", NULL, NULL,
"menu:minimize,maximize,close",
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-titlebar-double-click:
*
* Determines the action to take when a double-click
* occurs on the titlebar of client-side decorated windows.
*
* Recognized actions are minimize, toggle-maximize, menu, lower
* or none.
*/
pspecs[PROP_TITLEBAR_DOUBLE_CLICK] = g_param_spec_string ("gtk-titlebar-double-click", NULL, NULL,
"toggle-maximize",
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-titlebar-middle-click:
*
* Determines the action to take when a middle-click
* occurs on the titlebar of client-side decorated windows.
*
* Recognized actions are minimize, toggle-maximize, menu, lower
* or none.
*/
pspecs[PROP_TITLEBAR_MIDDLE_CLICK] = g_param_spec_string ("gtk-titlebar-middle-click", NULL, NULL,
"none",
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-titlebar-right-click:
*
* Determines the action to take when a right-click
* occurs on the titlebar of client-side decorated windows.
*
* Recognized actions are minimize, toggle-maximize, menu, lower
* or none.
*/
pspecs[PROP_TITLEBAR_RIGHT_CLICK] = g_param_spec_string ("gtk-titlebar-right-click", NULL, NULL,
"menu",
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-dialogs-use-header:
*
* Whether builtin GTK dialogs such as the file chooser, the
* color chooser or the font chooser will use a header bar at
* the top to show action widgets, or an action area at the bottom.
*
* This setting does not affect custom dialogs using `GtkDialog`
* directly, or message dialogs.
*/
pspecs[PROP_DIALOGS_USE_HEADER] = g_param_spec_boolean ("gtk-dialogs-use-header", NULL, NULL,
FALSE,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-enable-primary-paste:
*
* Whether a middle click on a mouse should paste the
* 'PRIMARY' clipboard content at the cursor location.
*/
pspecs[PROP_ENABLE_PRIMARY_PASTE] = g_param_spec_boolean ("gtk-enable-primary-paste", NULL, NULL,
TRUE,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-recent-files-enabled:
*
* Whether GTK should keep track of items inside the recently used
* resources list.
*
* If set to %FALSE, the list will always be empty.
*/
pspecs[PROP_RECENT_FILES_ENABLED] = g_param_spec_boolean ("gtk-recent-files-enabled", NULL, NULL,
TRUE,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-long-press-time:
*
* The time for a button or touch press to be considered a “long press”.
*
* See [class@Gtk.GestureLongPress].
*/
pspecs[PROP_LONG_PRESS_TIME] = g_param_spec_uint ("gtk-long-press-time", NULL, NULL,
0, G_MAXINT, 500,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-keynav-use-caret:
*
* Whether GTK should make sure that text can be navigated with
* a caret, even if it is not editable.
*
* This is useful when using a screen reader.
*/
pspecs[PROP_KEYNAV_USE_CARET] = g_param_spec_boolean ("gtk-keynav-use-caret", NULL, NULL,
FALSE,
GTK_PARAM_READWRITE);
/**
* GtkSettings:gtk-overlay-scrolling:
*
* Whether scrolled windows may use overlaid scrolling indicators.
*
* If this is set to %FALSE, scrolled windows will have permanent
* scrollbars.
*/
pspecs[PROP_OVERLAY_SCROLLING] = g_param_spec_boolean ("gtk-overlay-scrolling", NULL, NULL,
TRUE,
GTK_PARAM_READWRITE);
g_object_class_install_properties (gobject_class, NUM_PROPERTIES, pspecs);
}
static GtkSettings *
gtk_settings_style_provider_get_settings (GtkStyleProvider *provider)
{
return GTK_SETTINGS (provider);
}
static void
gtk_settings_provider_iface_init (GtkStyleProviderInterface *iface)
{
iface->get_settings = gtk_settings_style_provider_get_settings;
}
static void
gtk_settings_finalize (GObject *object)
{
GtkSettings *settings = GTK_SETTINGS (object);
guint i;
for (i = 1; i < NUM_PROPERTIES; i++)
g_value_unset (&settings->property_values[i - 1].value);
g_free (settings->property_values);
g_datalist_clear (&settings->queued_settings);
settings_update_provider (settings->display, &settings->theme_provider, NULL);
g_slist_free_full (settings->style_cascades, g_object_unref);
if (settings->font_options)
cairo_font_options_destroy (settings->font_options);
g_free (settings->font_family);
g_object_unref (settings->theme_provider);
G_OBJECT_CLASS (gtk_settings_parent_class)->finalize (object);
}
GtkStyleCascade *
_gtk_settings_get_style_cascade (GtkSettings *settings,
int scale)
{
GtkStyleCascade *new_cascade;
GSList *list;
g_return_val_if_fail (GTK_IS_SETTINGS (settings), NULL);
for (list = settings->style_cascades; list; list = list->next)
{
if (_gtk_style_cascade_get_scale (list->data) == scale)
return list->data;
}
/* We are guaranteed to have the special cascade with scale == 1.
* It's created in gtk_settings_init()
*/
g_assert (scale != 1);
new_cascade = _gtk_style_cascade_new ();
_gtk_style_cascade_set_parent (new_cascade, _gtk_settings_get_style_cascade (settings, 1));
_gtk_style_cascade_set_scale (new_cascade, scale);
settings->style_cascades = g_slist_prepend (settings->style_cascades, new_cascade);
return new_cascade;
}
static void
settings_init_style (GtkSettings *settings)
{
static GtkCssProvider *css_provider = NULL;
GtkStyleCascade *cascade;
/* Add provider for user file */
if (G_UNLIKELY (!css_provider))
{
char *css_path;
css_provider = gtk_css_provider_new ();
css_path = g_build_filename (g_get_user_config_dir (),
"gtk-4.0",
"gtk.css",
NULL);
if (g_file_test (css_path,
G_FILE_TEST_IS_REGULAR))
gtk_css_provider_load_from_path (css_provider, css_path);
g_free (css_path);
}
cascade = _gtk_settings_get_style_cascade (settings, 1);
_gtk_style_cascade_add_provider (cascade,
GTK_STYLE_PROVIDER (css_provider),
GTK_STYLE_PROVIDER_PRIORITY_USER);
_gtk_style_cascade_add_provider (cascade,
GTK_STYLE_PROVIDER (settings),
GTK_STYLE_PROVIDER_PRIORITY_SETTINGS);
_gtk_style_cascade_add_provider (cascade,
GTK_STYLE_PROVIDER (settings->theme_provider),
GTK_STYLE_PROVIDER_PRIORITY_SETTINGS);
settings_update_theme (settings);
}
static void
setting_changed (GdkDisplay *display,
const char *name,
gpointer data)
{
GtkSettings *settings = data;
GParamSpec *pspec;
pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (settings), name);
if (!pspec)
return;
if (settings_update_xsetting (settings, pspec, TRUE))
g_object_notify_by_pspec (G_OBJECT (settings), pspec);
}
static GtkSettings *
gtk_settings_create_for_display (GdkDisplay *display)
{
GtkSettings *settings;
#ifdef GDK_WINDOWING_MACOS
if (GDK_IS_MACOS_DISPLAY (display))
settings = g_object_new (GTK_TYPE_SETTINGS,
"gtk-shell-shows-app-menu", TRUE,
"gtk-shell-shows-menubar", TRUE,
NULL);
else
#endif
settings = g_object_new (GTK_TYPE_SETTINGS, NULL);
settings->display = display;
g_signal_connect_object (display, "setting-changed", G_CALLBACK (setting_changed), settings, 0);
g_ptr_array_add (display_settings, settings);
settings_init_style (settings);
settings_update_xsettings (settings);
settings_update_double_click (settings);
settings_update_cursor_theme (settings);
settings_update_font_options (settings);
settings_update_font_values (settings);
return settings;
}
/**
* gtk_settings_get_for_display:
* @display: a `GdkDisplay`
*
* Gets the `GtkSettings` object for @display, creating it if necessary.
*
* Returns: (transfer none): a `GtkSettings` object
*/
GtkSettings *
gtk_settings_get_for_display (GdkDisplay *display)
{
int i;
g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
if G_UNLIKELY (display_settings == NULL)
display_settings = g_ptr_array_new ();
for (i = 0; i < display_settings->len; i++)
{
GtkSettings *settings = g_ptr_array_index (display_settings, i);
if (settings->display == display)
return settings;
}
return gtk_settings_create_for_display (display);
}
/**
* gtk_settings_get_default:
*
* Gets the `GtkSettings` object for the default display, creating
* it if necessary.
*
* See [func@Gtk.Settings.get_for_display].
*
* Returns: (nullable) (transfer none): a `GtkSettings` object. If there is
* no default display, then returns %NULL.
*/
GtkSettings*
gtk_settings_get_default (void)
{
GdkDisplay *display = gdk_display_get_default ();
if (display)
return gtk_settings_get_for_display (display);
g_debug ("%s() returning NULL GtkSettings object. Is a display available?",
G_STRFUNC);
return NULL;
}
static void
gtk_settings_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GtkSettings *settings = GTK_SETTINGS (object);
g_value_copy (value, &settings->property_values[property_id - 1].value);
settings->property_values[property_id - 1].source = GTK_SETTINGS_SOURCE_APPLICATION;
}
static void
settings_invalidate_style (GtkSettings *settings)
{
gtk_style_provider_changed (GTK_STYLE_PROVIDER (settings));
}
static void
settings_update_font_values (GtkSettings *settings)
{
PangoFontDescription *desc;
const char *font_name;
font_name = g_value_get_string (&settings->property_values[PROP_FONT_NAME - 1].value);
desc = pango_font_description_from_string (font_name);
if (desc != NULL &&
(pango_font_description_get_set_fields (desc) & PANGO_FONT_MASK_SIZE) != 0)
{
settings->font_size = pango_font_description_get_size (desc);
settings->font_size_absolute = pango_font_description_get_size_is_absolute (desc);
}
else
{
settings->font_size = 10 * PANGO_SCALE;
settings->font_size_absolute = FALSE;
}
g_free (settings->font_family);
if (desc != NULL &&
(pango_font_description_get_set_fields (desc) & PANGO_FONT_MASK_FAMILY) != 0)
{
settings->font_family = g_strdup (pango_font_description_get_family (desc));
}
else
{
settings->font_family = g_strdup ("Sans");
}
if (desc)
pango_font_description_free (desc);
}
static void
gtk_settings_notify (GObject *object,
GParamSpec *pspec)
{
GtkSettings *settings = GTK_SETTINGS (object);
guint property_id = pspec->param_id;
if (settings->display == NULL) /* initialization */
return;
switch (property_id)
{
case PROP_DOUBLE_CLICK_TIME:
case PROP_DOUBLE_CLICK_DISTANCE:
settings_update_double_click (settings);
break;
case PROP_FONT_NAME:
settings_update_font_values (settings);
settings_invalidate_style (settings);
gtk_system_setting_changed (settings->display, GTK_SYSTEM_SETTING_FONT_NAME);
break;
case PROP_THEME_NAME:
case PROP_APPLICATION_PREFER_DARK_THEME:
settings_update_theme (settings);
break;
case PROP_XFT_DPI:
settings_invalidate_style (settings);
gtk_system_setting_changed (settings->display, GTK_SYSTEM_SETTING_DPI);
break;
case PROP_XFT_ANTIALIAS:
case PROP_XFT_HINTING:
case PROP_XFT_HINTSTYLE:
case PROP_XFT_RGBA:
case PROP_HINT_FONT_METRICS:
settings_update_font_options (settings);
gtk_system_setting_changed (settings->display, GTK_SYSTEM_SETTING_FONT_CONFIG);
break;
case PROP_FONTCONFIG_TIMESTAMP:
if (settings_update_fontconfig (settings))
gtk_system_setting_changed (settings->display, GTK_SYSTEM_SETTING_FONT_CONFIG);
break;
case PROP_ENABLE_ANIMATIONS:
settings_invalidate_style (settings);
break;
case PROP_CURSOR_THEME_NAME:
case PROP_CURSOR_THEME_SIZE:
settings_update_cursor_theme (settings);
break;
default:
break;
}
}
static gboolean
_gtk_settings_parse_convert (const GValue *src_value,
GParamSpec *pspec,
GValue *dest_value)
{
gboolean success = FALSE;
g_return_val_if_fail (G_VALUE_HOLDS (dest_value, G_PARAM_SPEC_VALUE_TYPE (pspec)), FALSE);
if (G_VALUE_HOLDS (src_value, G_TYPE_GSTRING))
{
if (G_VALUE_HOLDS (dest_value, G_TYPE_STRING))
{
GString *gstring = g_value_get_boxed (src_value);
g_value_set_string (dest_value, gstring ? gstring->str : NULL);
success = !g_param_value_validate (pspec, dest_value);
}
}
else if (g_value_type_transformable (G_VALUE_TYPE (src_value), G_VALUE_TYPE (dest_value)))
success = g_param_value_convert (pspec, src_value, dest_value, TRUE);
return success;
}
static void
apply_queued_setting (GtkSettings *settings,
GParamSpec *pspec,
GtkSettingsValue *qvalue)
{
GValue tmp_value = G_VALUE_INIT;
g_value_init (&tmp_value, G_PARAM_SPEC_VALUE_TYPE (pspec));
if (_gtk_settings_parse_convert (&qvalue->value,
pspec, &tmp_value))
{
if (settings->property_values[pspec->param_id - 1].source <= qvalue->source)
{
g_value_copy (&tmp_value, &settings->property_values[pspec->param_id - 1].value);
settings->property_values[pspec->param_id - 1].source = qvalue->source;
g_object_notify_by_pspec (G_OBJECT (settings), pspec);
}
}
else
{
char *debug = g_strdup_value_contents (&qvalue->value);
g_message ("%s: failed to retrieve property '%s' of type '%s' from rc file value \"%s\" of type '%s'",
qvalue->origin ? qvalue->origin : "(for origin information, set GTK_DEBUG)",
pspec->name,
g_type_name (G_PARAM_SPEC_VALUE_TYPE (pspec)),
debug,
G_VALUE_TYPE_NAME (&tmp_value));
g_free (debug);
}
g_value_unset (&tmp_value);
}
static void
free_value (gpointer data)
{
GtkSettingsValue *qvalue = data;
g_value_unset (&qvalue->value);
g_free (qvalue->origin);
g_slice_free (GtkSettingsValue, qvalue);
}
static void
gtk_settings_set_property_value_internal (GtkSettings *settings,
const char *prop_name,
const GtkSettingsValue *new_value,
GtkSettingsSource source)
{
GtkSettingsValue *qvalue;
GParamSpec *pspec;
char *name;
GQuark name_quark;
if (!G_VALUE_HOLDS_LONG (&new_value->value) &&
!G_VALUE_HOLDS_DOUBLE (&new_value->value) &&
!G_VALUE_HOLDS_STRING (&new_value->value) &&
!G_VALUE_HOLDS (&new_value->value, G_TYPE_GSTRING))
{
g_warning (G_STRLOC ": value type invalid (%s)", g_type_name (G_VALUE_TYPE (&new_value->value)));
return;
}
name = g_strdup (prop_name);
g_strcanon (name, G_CSET_DIGITS "-" G_CSET_a_2_z G_CSET_A_2_Z, '-');
name_quark = g_quark_from_string (name);
g_free (name);
qvalue = g_datalist_id_dup_data (&settings->queued_settings, name_quark, NULL, NULL);
if (!qvalue)
{
qvalue = g_slice_new0 (GtkSettingsValue);
g_datalist_id_set_data_full (&settings->queued_settings, name_quark, qvalue, free_value);
}
else
{
g_free (qvalue->origin);
g_value_unset (&qvalue->value);
}
qvalue->origin = g_strdup (new_value->origin);
g_value_init (&qvalue->value, G_VALUE_TYPE (&new_value->value));
g_value_copy (&new_value->value, &qvalue->value);
qvalue->source = source;
pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (settings), g_quark_to_string (name_quark));
if (pspec)
apply_queued_setting (settings, pspec, qvalue);
}
static void
settings_update_double_click (GtkSettings *settings)
{
int double_click_time;
int double_click_distance;
g_object_get (settings,
"gtk-double-click-time", &double_click_time,
"gtk-double-click-distance", &double_click_distance,
NULL);
gdk_display_set_double_click_time (settings->display, double_click_time);
gdk_display_set_double_click_distance (settings->display, double_click_distance);
}
static void
settings_update_cursor_theme (GtkSettings *settings)
{
char *theme = NULL;
int size = 0;
g_object_get (settings,
"gtk-cursor-theme-name", &theme,
"gtk-cursor-theme-size", &size,
NULL);
if (theme)
{
gdk_display_set_cursor_theme (settings->display, theme, size);
g_free (theme);
}
}
static void
settings_update_font_options (GtkSettings *settings)
{
int hinting;
char *hint_style_str;
cairo_hint_style_t hint_style;
int antialias;
cairo_antialias_t antialias_mode;
char *rgba_str;
cairo_subpixel_order_t subpixel_order;
gboolean hint_font_metrics;
if (settings->font_options)
cairo_font_options_destroy (settings->font_options);
g_object_get (settings,
"gtk-xft-antialias", &antialias,
"gtk-xft-hinting", &hinting,
"gtk-xft-hintstyle", &hint_style_str,
"gtk-xft-rgba", &rgba_str,
"gtk-hint-font-metrics", &hint_font_metrics,
NULL);
settings->font_options = cairo_font_options_create ();
cairo_font_options_set_hint_metrics (settings->font_options,
hint_font_metrics ? CAIRO_HINT_METRICS_ON
: CAIRO_HINT_METRICS_OFF);
hint_style = CAIRO_HINT_STYLE_DEFAULT;
if (hinting == 0)
{
hint_style = CAIRO_HINT_STYLE_NONE;
}
else if (hinting == 1)
{
if (hint_style_str)
{
if (strcmp (hint_style_str, "hintnone") == 0)
hint_style = CAIRO_HINT_STYLE_NONE;
else if (strcmp (hint_style_str, "hintslight") == 0)
hint_style = CAIRO_HINT_STYLE_SLIGHT;
else if (strcmp (hint_style_str, "hintmedium") == 0)
hint_style = CAIRO_HINT_STYLE_MEDIUM;
else if (strcmp (hint_style_str, "hintfull") == 0)
hint_style = CAIRO_HINT_STYLE_FULL;
}
}
g_free (hint_style_str);
cairo_font_options_set_hint_style (settings->font_options, hint_style);
subpixel_order = CAIRO_SUBPIXEL_ORDER_DEFAULT;
if (rgba_str)
{
if (strcmp (rgba_str, "rgb") == 0)
subpixel_order = CAIRO_SUBPIXEL_ORDER_RGB;
else if (strcmp (rgba_str, "bgr") == 0)
subpixel_order = CAIRO_SUBPIXEL_ORDER_BGR;
else if (strcmp (rgba_str, "vrgb") == 0)
subpixel_order = CAIRO_SUBPIXEL_ORDER_VRGB;
else if (strcmp (rgba_str, "vbgr") == 0)
subpixel_order = CAIRO_SUBPIXEL_ORDER_VBGR;
}
g_free (rgba_str);
cairo_font_options_set_subpixel_order (settings->font_options, subpixel_order);
antialias_mode = CAIRO_ANTIALIAS_DEFAULT;
if (antialias == 0)
{
antialias_mode = CAIRO_ANTIALIAS_NONE;
}
else if (antialias == 1)
{
if (subpixel_order != CAIRO_SUBPIXEL_ORDER_DEFAULT)
antialias_mode = CAIRO_ANTIALIAS_SUBPIXEL;
else
antialias_mode = CAIRO_ANTIALIAS_GRAY;
}
cairo_font_options_set_antialias (settings->font_options, antialias_mode);
}
static gboolean
settings_update_fontconfig (GtkSettings *settings)
{
#if defined(GDK_WINDOWING_X11) || defined(GDK_WINDOWING_WAYLAND)
static guint last_update_timestamp;
static gboolean last_update_needed;
guint timestamp;
g_object_get (settings,
"gtk-fontconfig-timestamp", &timestamp,
NULL);
/* if timestamp is the same as last_update_timestamp, we already have
* updated fontconig on this timestamp (another screen requested it perhaps?),
* just return the cached result.*/
if (timestamp != last_update_timestamp)
{
PangoFontMap *fontmap = pango_cairo_font_map_get_default ();
gboolean update_needed = FALSE;
/* bug 547680 */
if (PANGO_IS_FC_FONT_MAP (fontmap) && !FcConfigUptoDate (NULL))
{
pango_fc_font_map_config_changed (PANGO_FC_FONT_MAP (fontmap));
if (FcInitReinitialize ())
update_needed = TRUE;
}
last_update_timestamp = timestamp;
last_update_needed = update_needed;
}
return last_update_needed;
#else
return FALSE;
#endif /* GDK_WINDOWING_X11 || GDK_WINDOWING_WAYLAND */
}
static void
settings_update_provider (GdkDisplay *display,
GtkCssProvider **old,
GtkCssProvider *new)
{
if (display != NULL && *old != new)
{
if (*old)
{
gtk_style_context_remove_provider_for_display (display,
GTK_STYLE_PROVIDER (*old));
g_object_unref (*old);
*old = NULL;
}
if (new)
{
gtk_style_context_add_provider_for_display (display,
GTK_STYLE_PROVIDER (new),
GTK_STYLE_PROVIDER_PRIORITY_THEME);
*old = g_object_ref (new);
}
}
}
static void
get_theme_name (GtkSettings *settings,
char **theme_name,
char **theme_variant)
{
gboolean prefer_dark;
*theme_name = NULL;
*theme_variant = NULL;
if (g_getenv ("GTK_THEME"))
*theme_name = g_strdup (g_getenv ("GTK_THEME"));
if (*theme_name && **theme_name)
{
char *p;
p = strrchr (*theme_name, ':');
if (p) {
*p = '\0';
p++;
*theme_variant = g_strdup (p);
}
return;
}
g_free (*theme_name);
g_object_get (settings,
"gtk-theme-name", theme_name,
"gtk-application-prefer-dark-theme", &prefer_dark,
NULL);
if (prefer_dark)
*theme_variant = g_strdup ("dark");
if (*theme_name && **theme_name)
return;
g_free (*theme_name);
*theme_name = g_strdup (DEFAULT_THEME_NAME);
}
static void
settings_update_theme (GtkSettings *settings)
{
char *theme_name;
char *theme_variant;
const char *theme_dir;
char *path;
get_theme_name (settings, &theme_name, &theme_variant);
gtk_css_provider_load_named (settings->theme_provider,
theme_name,
theme_variant);
/* reload per-theme settings */
theme_dir = _gtk_css_provider_get_theme_dir (settings->theme_provider);
if (theme_dir)
{
path = g_build_filename (theme_dir, "settings.ini", NULL);
gtk_settings_load_from_key_file (settings, path, GTK_SETTINGS_SOURCE_THEME);
g_free (path);
}
g_free (theme_name);
g_free (theme_variant);
}
const cairo_font_options_t *
gtk_settings_get_font_options (GtkSettings *settings)
{
return settings->font_options;
}
GdkDisplay *
_gtk_settings_get_display (GtkSettings *settings)
{
return settings->display;
}
static void
gvalue_free (gpointer data)
{
g_value_unset (data);
g_free (data);
}
static void
gtk_settings_load_from_key_file (GtkSettings *settings,
const char *path,
GtkSettingsSource source)
{
GError *error;
GKeyFile *keyfile;
char **keys;
gsize n_keys;
int i;
char *contents;
gsize contents_len;
if (!g_file_get_contents (path, &contents, &contents_len, NULL))
return;
error = NULL;
keys = NULL;
keyfile = g_key_file_new ();
if (!g_key_file_load_from_data (keyfile, contents, contents_len, G_KEY_FILE_NONE, &error))
{
g_warning ("Failed to parse %s: %s", path, error->message);
g_error_free (error);
goto out;
}
keys = g_key_file_get_keys (keyfile, "Settings", &n_keys, &error);
if (error)
{
g_warning ("Failed to parse %s: %s", path, error->message);
g_error_free (error);
goto out;
}
for (i = 0; i < n_keys; i++)
{
char *key;
GParamSpec *pspec;
GType value_type;
GtkSettingsValue svalue = { NULL, G_VALUE_INIT, GTK_SETTINGS_SOURCE_DEFAULT };
key = keys[i];
pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (settings), key);
if (!pspec)
{
g_warning ("Unknown key %s in %s", key, path);
continue;
}
if (pspec->owner_type != G_OBJECT_TYPE (settings))
continue;
value_type = G_PARAM_SPEC_VALUE_TYPE (pspec);
switch (value_type)
{
case G_TYPE_BOOLEAN:
{
gboolean b_val;
g_value_init (&svalue.value, G_TYPE_LONG);
b_val = g_key_file_get_boolean (keyfile, "Settings", key, &error);
if (!error)
g_value_set_long (&svalue.value, b_val);
break;
}
case G_TYPE_INT:
case G_TYPE_UINT:
{
int i_val;
g_value_init (&svalue.value, G_TYPE_LONG);
i_val = g_key_file_get_integer (keyfile, "Settings", key, &error);
if (!error)
g_value_set_long (&svalue.value, i_val);
break;
}
case G_TYPE_DOUBLE:
{
double d_val;
g_value_init (&svalue.value, G_TYPE_DOUBLE);
d_val = g_key_file_get_double (keyfile, "Settings", key, &error);
if (!error)
g_value_set_double (&svalue.value, d_val);
break;
}
default:
{
char *s_val;
g_value_init (&svalue.value, G_TYPE_GSTRING);
s_val = g_key_file_get_string (keyfile, "Settings", key, &error);
if (!error)
g_value_take_boxed (&svalue.value, g_string_new (s_val));
g_free (s_val);
break;
}
}
if (error)
{
g_warning ("Error setting %s in %s: %s", key, path, error->message);
g_error_free (error);
error = NULL;
}
else
{
GValue *copy;
copy = g_new0 (GValue, 1);
g_value_init (copy, G_VALUE_TYPE (&svalue.value));
g_value_copy (&svalue.value, copy);
g_param_spec_set_qdata_full (pspec, g_quark_from_string (key),
copy, gvalue_free);
if (g_getenv ("GTK_DEBUG"))
svalue.origin = (char *)path;
gtk_settings_set_property_value_internal (settings, key, &svalue, source);
g_value_unset (&svalue.value);
}
}
out:
g_free (contents);
g_strfreev (keys);
g_key_file_free (keyfile);
}
static gboolean
settings_update_xsetting (GtkSettings *settings,
GParamSpec *pspec,
gboolean force)
{
GType value_type;
GType fundamental_type;
gboolean retval = FALSE;
if (settings->property_values[pspec->param_id - 1].source == GTK_SETTINGS_SOURCE_APPLICATION)
return FALSE;
if (settings->property_values[pspec->param_id - 1].source == GTK_SETTINGS_SOURCE_XSETTING && !force)
return FALSE;
value_type = G_PARAM_SPEC_VALUE_TYPE (pspec);
fundamental_type = G_TYPE_FUNDAMENTAL (value_type);
if ((g_value_type_transformable (G_TYPE_INT, value_type) &&
!(fundamental_type == G_TYPE_ENUM || fundamental_type == G_TYPE_FLAGS)) ||
g_value_type_transformable (G_TYPE_STRING, value_type) ||
g_value_type_transformable (GDK_TYPE_RGBA, value_type))
{
GValue val = G_VALUE_INIT;
g_value_init (&val, value_type);
if (!gdk_display_get_setting (settings->display, pspec->name, &val))
return FALSE;
g_param_value_validate (pspec, &val);
g_value_copy (&val, &settings->property_values[pspec->param_id - 1].value);
settings->property_values[pspec->param_id - 1].source = GTK_SETTINGS_SOURCE_XSETTING;
g_value_unset (&val);
retval = TRUE;
}
else
{
return FALSE;
}
return retval;
}
static void
settings_update_xsettings (GtkSettings *settings)
{
int i;
for (i = 0; pspecs[i]; i++)
settings_update_xsetting (settings, pspecs[i], FALSE);
}
static void
gtk_settings_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GtkSettings *settings = GTK_SETTINGS (object);
settings_update_xsetting (settings, pspec, FALSE);
g_value_copy (&settings->property_values[property_id - 1].value, value);
}
GtkSettingsSource
_gtk_settings_get_setting_source (GtkSettings *settings,
const char *name)
{
GParamSpec *pspec;
pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (settings), name);
if (!pspec)
return GTK_SETTINGS_SOURCE_DEFAULT;
return settings->property_values[pspec->param_id - 1].source;
}
/**
* gtk_settings_reset_property:
* @settings: a `GtkSettings` object
* @name: the name of the setting to reset
*
* Undoes the effect of calling g_object_set() to install an
* application-specific value for a setting.
*
* After this call, the setting will again follow the session-wide
* value for this setting.
*/
void
gtk_settings_reset_property (GtkSettings *settings,
const char *name)
{
GParamSpec *pspec;
GValue *value;
GValue tmp_value = G_VALUE_INIT;
pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (settings), name);
g_return_if_fail (pspec != NULL);
value = g_param_spec_get_qdata (pspec, g_quark_from_string (name));
g_value_init (&tmp_value, G_PARAM_SPEC_VALUE_TYPE (pspec));
if (value && _gtk_settings_parse_convert (value, pspec, &tmp_value))
g_value_copy (&tmp_value, &settings->property_values[pspec->param_id - 1].value);
else
g_param_value_set_default (pspec, &settings->property_values[pspec->param_id - 1].value);
settings->property_values[pspec->param_id - 1].source = GTK_SETTINGS_SOURCE_DEFAULT;
g_object_notify_by_pspec (G_OBJECT (settings), pspec);
}
gboolean
gtk_settings_get_enable_animations (GtkSettings *settings)
{
GtkSettingsPropertyValue *svalue = &settings->property_values[PROP_ENABLE_ANIMATIONS - 1];
if (svalue->source < GTK_SETTINGS_SOURCE_XSETTING)
{
GParamSpec *pspec;
pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (settings), "gtk-enable-animations");
if (settings_update_xsetting (settings, pspec, FALSE))
g_object_notify_by_pspec (G_OBJECT (settings), pspec);
}
return g_value_get_boolean (&svalue->value);
}
int
gtk_settings_get_dnd_drag_threshold (GtkSettings *settings)
{
GtkSettingsPropertyValue *svalue = &settings->property_values[PROP_DND_DRAG_THRESHOLD - 1];
if (svalue->source < GTK_SETTINGS_SOURCE_XSETTING)
{
GParamSpec *pspec;
pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (settings), "gtk-dnd-drag-threshold");
if (settings_update_xsetting (settings, pspec, FALSE))
g_object_notify_by_pspec (G_OBJECT (settings), pspec);
}
return g_value_get_int (&svalue->value);
}
static void
settings_update_font_name (GtkSettings *settings)
{
GtkSettingsPropertyValue *svalue = &settings->property_values[PROP_FONT_NAME - 1];
if (svalue->source < GTK_SETTINGS_SOURCE_XSETTING)
{
GParamSpec *pspec;
pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (settings), "gtk-font-name");
if (settings_update_xsetting (settings, pspec, FALSE))
g_object_notify_by_pspec (G_OBJECT (settings), pspec);
}
}
const char *
gtk_settings_get_font_family (GtkSettings *settings)
{
settings_update_font_name (settings);
return settings->font_family;
}
int
gtk_settings_get_font_size (GtkSettings *settings)
{
settings_update_font_name (settings);
return settings->font_size;
}
gboolean
gtk_settings_get_font_size_is_absolute (GtkSettings *settings)
{
settings_update_font_name (settings);
return settings->font_size_absolute;
}
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