implement WallpaperManager.setBitmap() using XDG Portal

meson.build

@@ -98,6 +98,7 @@ libtranslationlayer_so = shared_library('translation_layer_main', [
                                                                   	'src/api-impl-jni/app/android_app_AlertDialog.c',
                                                                   	'src/api-impl-jni/app/android_app_Dialog.c',
                                                                   	'src/api-impl-jni/app/android_app_NotificationManager.c',
+                                                                  	'src/api-impl-jni/app/android_app_WallpaperManager.c',
                                                                   	'src/api-impl-jni/AssetInputStream.c',
                                                                   	'src/api-impl-jni/audio/android_media_AudioTrack.c',
                                                                   	'src/api-impl-jni/audio/android_media_SoundPool.c',

src/api-impl-jni/app/android_app_WallpaperManager.c

@@ -0,0 +1,26 @@
+#include <gdk-pixbuf/gdk-pixbuf.h>
+#include <libportal/portal.h>
+
+#include "../defines.h"
+#include "../generated_headers/android_app_WallpaperManager.h"
+
+static void wallpaper_ready_cb(GObject *source, GAsyncResult *res, gpointer user_data)
+{
+	xdp_portal_set_wallpaper_finish(XDP_PORTAL(source), res, NULL);
+	GFile *file = user_data;
+	g_file_delete(file, NULL, NULL);
+	g_object_unref(file);
+}
+
+JNIEXPORT void JNICALL Java_android_app_WallpaperManager_set_1bitmap(JNIEnv *env, jclass clazz, jlong pixbuf_ptr)
+{
+	GdkPixbuf *pixbuf = _PTR(pixbuf_ptr);
+	GFileIOStream *stream;
+	GFile *file = g_file_new_tmp("XXXXXX.png", &stream, NULL);
+	g_io_stream_close(G_IO_STREAM(stream), NULL, NULL);
+	g_object_unref(stream);
+	gdk_pixbuf_save(pixbuf, g_file_get_path(file), "png", NULL, NULL);
+	XdpPortal *portal = xdp_portal_new();
+	xdp_portal_set_wallpaper(portal, NULL, g_file_get_uri(file), XDP_WALLPAPER_FLAG_NONE, NULL, wallpaper_ready_cb, file);
+	g_object_unref(portal);
+}

src/api-impl-jni/generated_headers/android_app_WallpaperManager.h

@@ -0,0 +1,21 @@
+/* DO NOT EDIT THIS FILE - it is machine generated */
+#include <jni.h>
+/* Header for class android_app_WallpaperManager */
+
+#ifndef _Included_android_app_WallpaperManager
+#define _Included_android_app_WallpaperManager
+#ifdef __cplusplus
+extern "C" {
+#endif
+/*
+ * Class:     android_app_WallpaperManager
+ * Method:    set_bitmap
+ * Signature: (J)V
+ */
+JNIEXPORT void JNICALL Java_android_app_WallpaperManager_set_1bitmap
+  (JNIEnv *, jclass, jlong);
+
+#ifdef __cplusplus
+}
+#endif
+#endif

src/api-impl/android/app/WallpaperManager.java

@@ -1,5 +1,18 @@
 package android.app;
 
+import android.content.Context;
+import android.graphics.Bitmap;
+
 public class WallpaperManager {
 
+	public static WallpaperManager getInstance(Context context) {
+		return new WallpaperManager();
+	}
+
+	public void setBitmap(Bitmap bitmap) {
+		set_bitmap(bitmap.pixbuf);
+	}
+
+	private static native void set_bitmap(long pixbuf);
+	
 }