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use XDG-Portal to detect night mode

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Get dark mode property directly from XDG portal instead of extracting it
from the GTK theme. Also we pass the value to GTK, which would normaly
be done by libadwaita.

This also has the advantage, that we can switch the theme at runtime.
but for now the change will only affect newly created Activities.
This commit is contained in:
Julian Winkler 2024-11-01 17:38:50 +01:00
parent acdd3c88cc
commit 6dfd0d1d4b
1 changed files with 34 additions and 14 deletions
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48
src/api-impl-jni/content/android_content_Context.c
View file

@ -2,6 +2,8 @@
#include <gtk/gtk.h>
#include <string.h>
#include <libportal/portal.h>
#include <libportal/settings.h>
#include "portal-openuri.h"
@ -16,23 +18,41 @@ JNIEXPORT jstring JNICALL Java_android_content_Context_native_1get_1apk_1path(JN
return _JSTRING(apk_path);
}
static void settings_changed_cb(XdpSettings *xdp_settings, gchar *namestpace, gchar *key, GVariant* value, jobject configuration)
{
JNIEnv *env;
if (!strcmp(namestpace, "org.freedesktop.appearance") && !strcmp(key, "color-scheme")) {
int color_sheme = g_variant_get_uint32(value);
g_object_set(gtk_settings_get_default(), "gtk-application-prefer-dark-theme", color_sheme == 1, NULL);
env = get_jni_env();
if (!configuration) {
jobject resources = _GET_STATIC_OBJ_FIELD(handle_cache.context.class, "r", "Landroid/content/res/Resources;");
configuration = _GET_OBJ_FIELD(resources, "mConfiguration", "Landroid/content/res/Configuration;");
}
if (color_sheme == 1) // Prefer dark appearance
_SET_INT_FIELD(configuration, "uiMode", /*UI_MODE_NIGHT_YES*/ 0x20);
else if (color_sheme == 2) // Prefer light appearance
_SET_INT_FIELD(configuration, "uiMode", /*UI_MODE_NIGHT_NO*/ 0x10);
else // No preference
_SET_INT_FIELD(configuration, "uiMode", /*UI_MODE_NIGHT_UNDEFINED*/ 0x00);
}
}
static XdpSettings *xdp_settings = NULL;
JNIEXPORT void JNICALL Java_android_content_Context_native_1updateConfig(JNIEnv *env, jclass this, jobject config)
{
GtkSettings *settings = gtk_settings_get_default();
char *theme_name;
gboolean prefer_dark = false;
gboolean theme_name_from_env = false;
theme_name = getenv("GTK_THEME");
theme_name_from_env = theme_name != NULL;
if (!theme_name_from_env)
g_object_get(settings, "gtk-theme-name", &theme_name, "gtk-application-prefer-dark-theme", &prefer_dark, NULL);
bool night_mode = prefer_dark || strcasestr(theme_name, "dark") || strcasestr(theme_name, "black");
if (night_mode) {
_SET_INT_FIELD(config, "uiMode", /*UI_MODE_NIGHT_YES*/ 0x20);
if (!xdp_settings) {
XdpPortal *portal = xdp_portal_new();
xdp_settings = xdp_portal_get_settings(portal);
g_object_unref(portal);
g_signal_connect(xdp_settings, "changed", G_CALLBACK(settings_changed_cb), NULL);
}
GVariant *color_sheme = xdp_settings_read_value(xdp_settings, "org.freedesktop.appearance", "color-scheme", NULL, NULL);
if (color_sheme) {
settings_changed_cb(xdp_settings, "org.freedesktop.appearance", "color-scheme", color_sheme, config);
g_variant_unref(color_sheme);
}
if (!theme_name_from_env)
g_free(theme_name);
}
JNIEXPORT void JNICALL Java_android_content_Context_nativeOpenFile(JNIEnv *env, jclass class, jint fd)