Allowing enabling and disabling of immersive mode via borderless setting and love.window.setMode()

jni/love/src/common/android.cpp

@@ -35,6 +35,20 @@ namespace love
 namespace android
 {
 
+void setBorderless (bool borderless_active) {
+	JNIEnv *env = (JNIEnv*) SDL_AndroidGetJNIEnv();
+
+	jobject activity = (jobject) SDL_AndroidGetActivity();
+
+	jclass clazz (env->GetObjectClass(activity));
+	jmethodID method_id = env->GetMethodID (clazz, "setImmersiveMode", "(Z)V");
+
+	env->CallVoidMethod (activity, method_id, borderless_active);
+
+	env->DeleteLocalRef (activity);
+	env->DeleteLocalRef (clazz);
+}
+
 double getScreenScale()
 {
   static double result = -1.;

jni/love/src/common/android.h

@@ -32,6 +32,8 @@ namespace love
 namespace android
 {
 
+void setBorderless (bool borderless_active);
+
 /**
  * Gets the scale factor of the window's screen, e.g. on Retina displays this
  * will return 2.0.

jni/love/src/modules/window/sdl/Window.cpp

@@ -244,6 +244,10 @@ bool Window::setWindow(int width, int height, WindowSettings *settings)
 
 		if (!gfx->setMode(width, height, curMode.settings.sRGB))
 			showMessageBox("Could not set graphics mode", "Unsupported OpenGL version?", MESSAGEBOX_ERROR, true);
+
+#ifdef LOVE_ANDROID
+		love::android::setBorderless(f.borderless);
+#endif
 	}
 
 	// Make sure the mouse keeps its previous grab setting.