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eglnative: Use gnome-settings-daemon font settings
While the X11 backend gets its font settings from XSettings, the native backend did not use any user font preferences till now. So all shell fonts were rendered with grayscale un-hinted, which some people describe as "blurry text in Wayland sessions". Although it's somewhat confusing using the "xsettings" schema on eglnative, this is consistent with what GTK does already for its Wayland backend. It is also documented here: https://wiki.gnome.org/Initiatives/Wayland/GTK%2B#XSettings https://wiki.gnome.org/Initiatives/Wayland/gnome-settings-daemon#xsettings No more blurry shell text in Wayland sessions. https://bugzilla.gnome.org/show_bug.cgi?id=645433
This commit is contained in:
Daniel van Vugt
Marco Trevisan (Treviño)
parent
acab829cc4
commit
d358edd525
@ -48,6 +48,7 @@
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#include "clutter-private.h"
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#include "clutter-main.h"
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#include "clutter-stage-private.h"
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#include "clutter-settings-private.h"
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#ifdef COGL_HAS_EGL_SUPPORT
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#include "clutter-egl.h"
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@ -60,6 +61,8 @@ clutter_backend_egl_native_dispose (GObject *gobject)
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{
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ClutterBackendEglNative *backend_egl_native = CLUTTER_BACKEND_EGL_NATIVE (gobject);
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g_clear_object (&backend_egl_native->xsettings);
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if (backend_egl_native->event_timer != NULL)
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{
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g_timer_destroy (backend_egl_native->event_timer);
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@ -77,9 +80,181 @@ clutter_backend_egl_native_class_init (ClutterBackendEglNativeClass *klass)
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gobject_class->dispose = clutter_backend_egl_native_dispose;
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}
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typedef struct
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{
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cairo_antialias_t cairo_antialias;
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gint clutter_font_antialias;
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cairo_hint_style_t cairo_hint_style;
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const char *clutter_font_hint_style;
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cairo_subpixel_order_t cairo_subpixel_order;
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const char *clutter_font_subpixel_order;
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} FontSettings;
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static void
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get_font_gsettings (GSettings *xsettings,
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FontSettings *output)
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{
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/* org.gnome.settings-daemon.GsdFontAntialiasingMode */
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static const struct
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{
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cairo_antialias_t cairo_antialias;
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gint clutter_font_antialias;
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}
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antialiasings[] =
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{
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/* none=0 */ {CAIRO_ANTIALIAS_NONE, 0},
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/* grayscale=1 */ {CAIRO_ANTIALIAS_GRAY, 1},
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/* rgba=2 */ {CAIRO_ANTIALIAS_SUBPIXEL, 1},
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};
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/* org.gnome.settings-daemon.GsdFontHinting */
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static const struct
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{
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cairo_hint_style_t cairo_hint_style;
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const char *clutter_font_hint_style;
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}
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hintings[] =
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{
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/* none=0 */ {CAIRO_HINT_STYLE_NONE, "hintnone"},
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/* slight=1 */ {CAIRO_HINT_STYLE_SLIGHT, "hintslight"},
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/* medium=2 */ {CAIRO_HINT_STYLE_MEDIUM, "hintmedium"},
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/* full=3 */ {CAIRO_HINT_STYLE_FULL, "hintfull"},
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};
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/* org.gnome.settings-daemon.GsdFontRgbaOrder */
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static const struct
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{
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cairo_subpixel_order_t cairo_subpixel_order;
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const char *clutter_font_subpixel_order;
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}
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rgba_orders[] =
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{
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/* rgba=0 */ {CAIRO_SUBPIXEL_ORDER_RGB, "rgb"}, /* XXX what is 'rgba'? */
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/* rgb=1 */ {CAIRO_SUBPIXEL_ORDER_RGB, "rgb"},
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/* bgr=2 */ {CAIRO_SUBPIXEL_ORDER_BGR, "bgr"},
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/* vrgb=3 */ {CAIRO_SUBPIXEL_ORDER_VRGB, "vrgb"},
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/* vbgr=4 */ {CAIRO_SUBPIXEL_ORDER_VBGR, "vbgr"},
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};
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guint i;
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i = g_settings_get_enum (xsettings, "hinting");
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if (i < G_N_ELEMENTS (hintings))
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{
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output->cairo_hint_style = hintings[i].cairo_hint_style;
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output->clutter_font_hint_style = hintings[i].clutter_font_hint_style;
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}
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else
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{
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output->cairo_hint_style = CAIRO_HINT_STYLE_DEFAULT;
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output->clutter_font_hint_style = NULL;
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}
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i = g_settings_get_enum (xsettings, "antialiasing");
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if (i < G_N_ELEMENTS (antialiasings))
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{
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output->cairo_antialias = antialiasings[i].cairo_antialias;
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output->clutter_font_antialias = antialiasings[i].clutter_font_antialias;
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}
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else
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{
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output->cairo_antialias = CAIRO_ANTIALIAS_DEFAULT;
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output->clutter_font_antialias = -1;
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}
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i = g_settings_get_enum (xsettings, "rgba-order");
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if (i < G_N_ELEMENTS (rgba_orders))
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{
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output->cairo_subpixel_order = rgba_orders[i].cairo_subpixel_order;
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output->clutter_font_subpixel_order = rgba_orders[i].clutter_font_subpixel_order;
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}
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else
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{
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output->cairo_subpixel_order = CAIRO_SUBPIXEL_ORDER_DEFAULT;
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output->clutter_font_subpixel_order = NULL;
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}
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if (output->cairo_antialias == CAIRO_ANTIALIAS_GRAY)
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output->clutter_font_subpixel_order = "none";
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}
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static void
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init_font_options (ClutterBackendEglNative *backend_egl_native)
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{
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GSettings *xsettings = backend_egl_native->xsettings;
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cairo_font_options_t *options = cairo_font_options_create ();
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FontSettings fs;
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get_font_gsettings (xsettings, &fs);
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cairo_font_options_set_hint_style (options, fs.cairo_hint_style);
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cairo_font_options_set_antialias (options, fs.cairo_antialias);
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cairo_font_options_set_subpixel_order (options, fs.cairo_subpixel_order);
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clutter_backend_set_font_options (CLUTTER_BACKEND (backend_egl_native),
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options);
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cairo_font_options_destroy (options);
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}
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static gboolean
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on_xsettings_change_event (GSettings *xsettings,
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gpointer keys,
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gint n_keys,
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gpointer user_data)
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{
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/*
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* A simpler alternative to this function that does not update the screen
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* immediately (like macOS :P):
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*
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* init_font_options (CLUTTER_BACKEND_EGL_NATIVE (user_data));
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*
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* which has the added benefit of eliminating the need for all the
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* FontSettings.clutter_ fields. However the below approach is better for
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* testing settings and more consistent with the existing x11 backend...
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*/
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ClutterSettings *csettings = clutter_settings_get_default ();
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FontSettings fs;
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gint hinting;
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get_font_gsettings (xsettings, &fs);
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hinting = fs.cairo_hint_style == CAIRO_HINT_STYLE_NONE ? 0 : 1;
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g_object_set (csettings,
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"font-hinting", hinting,
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"font-hint-style", fs.clutter_font_hint_style,
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"font-antialias", fs.clutter_font_antialias,
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"font-subpixel-order", fs.clutter_font_subpixel_order,
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NULL);
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return FALSE;
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}
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static void
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clutter_backend_egl_native_init (ClutterBackendEglNative *backend_egl_native)
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{
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static const gchar xsettings_path[] = "org.gnome.settings-daemon.plugins.xsettings";
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GSettingsSchemaSource *source = g_settings_schema_source_get_default ();
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GSettingsSchema *schema = g_settings_schema_source_lookup (source,
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xsettings_path,
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FALSE);
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if (!schema)
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{
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g_warning ("Failed to find schema: %s", xsettings_path);
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}
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else
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{
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backend_egl_native->xsettings = g_settings_new_full (schema, NULL, NULL);
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if (backend_egl_native->xsettings)
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{
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init_font_options (backend_egl_native);
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g_signal_connect (backend_egl_native->xsettings, "change-event",
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G_CALLBACK (on_xsettings_change_event),
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backend_egl_native);
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}
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}
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backend_egl_native->event_timer = g_timer_new ();
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}
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@ -61,6 +61,9 @@ struct _ClutterBackendEglNative
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/* event timer */
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GTimer *event_timer;
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/* "xsettings" is still the defacto place for Xft settings, even in Wayland */
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GSettings *xsettings;
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};
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struct _ClutterBackendEglNativeClass
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