examples: cleanup simple

- Move a log to where it should be
- Enforce code style
- Rename wlr to backend

examples/simple.c

@@ -37,8 +37,8 @@ struct sample_keyboard {
 };
 
 void output_frame_notify(struct wl_listener *listener, void *data) {
-	wlr_log(WLR_DEBUG, "Output removed");
-	struct sample_output *sample_output = wl_container_of(listener, sample_output, frame);
+	struct sample_output *sample_output =
+		wl_container_of(listener, sample_output, frame);
 	struct sample_state *sample = sample_output->sample;
 	struct timespec now;
 	clock_gettime(CLOCK_MONOTONIC, &now);
@@ -66,7 +66,9 @@ void output_frame_notify(struct wl_listener *listener, void *data) {
 }
 
 void output_remove_notify(struct wl_listener *listener, void *data) {
-	struct sample_output *sample_output = wl_container_of(listener, sample_output, destroy);
+	struct sample_output *sample_output =
+		wl_container_of(listener, sample_output, destroy);
+	wlr_log(WLR_DEBUG, "Output removed");
 	wl_list_remove(&sample_output->frame.link);
 	wl_list_remove(&sample_output->destroy.link);
 	free(sample_output);
@@ -74,10 +76,13 @@ void output_remove_notify(struct wl_listener *listener, void *data) {
 
 void new_output_notify(struct wl_listener *listener, void *data) {
 	struct wlr_output *output = data;
-	struct sample_state *sample = wl_container_of(listener, sample, new_output);
-	struct sample_output *sample_output = calloc(1, sizeof(struct sample_output));
+	struct sample_state *sample =
+		wl_container_of(listener, sample, new_output);
+	struct sample_output *sample_output =
+		calloc(1, sizeof(struct sample_output));
 	if (!wl_list_empty(&output->modes)) {
-		struct wlr_output_mode *mode = wl_container_of(output->modes.prev, mode, link);
+		struct wlr_output_mode *mode =
+			wl_container_of(output->modes.prev, mode, link);
 		wlr_output_set_mode(output, mode);
 	}
 	sample_output->output = output;
@@ -105,7 +110,8 @@ void keyboard_key_notify(struct wl_listener *listener, void *data) {
 }
 
 void keyboard_destroy_notify(struct wl_listener *listener, void *data) {
-	struct sample_keyboard *keyboard = wl_container_of(listener, keyboard, destroy);
+	struct sample_keyboard *keyboard =
+		wl_container_of(listener, keyboard, destroy);
 	wl_list_remove(&keyboard->destroy.link);
 	wl_list_remove(&keyboard->key.link);
 	free(keyboard);
@@ -116,7 +122,8 @@ void new_input_notify(struct wl_listener *listener, void *data) {
 	struct sample_state *sample = wl_container_of(listener, sample, new_input);
 	switch (device->type) {
 	case WLR_INPUT_DEVICE_KEYBOARD:;
-		struct sample_keyboard *keyboard = calloc(1, sizeof(struct sample_keyboard));
+		struct sample_keyboard *keyboard =
+			calloc(1, sizeof(struct sample_keyboard));
 		keyboard->device = device;
 		keyboard->sample = sample;
 		wl_signal_add(&device->events.destroy, &keyboard->destroy);
@@ -152,19 +159,19 @@ int main(void) {
 		.last_frame = { 0 },
 		.display = display
 	};
-	struct wlr_backend *wlr = wlr_backend_autocreate(display, NULL);
-	if (!wlr) {
+	struct wlr_backend *backend = wlr_backend_autocreate(display, NULL);
+	if (!backend) {
 		exit(1);
 	}
-	wl_signal_add(&wlr->events.new_output, &state.new_output);
+	wl_signal_add(&backend->events.new_output, &state.new_output);
 	state.new_output.notify = new_output_notify;
-	wl_signal_add(&wlr->events.new_input, &state.new_input);
+	wl_signal_add(&backend->events.new_input, &state.new_input);
 	state.new_input.notify = new_input_notify;
 	clock_gettime(CLOCK_MONOTONIC, &state.last_frame);
 
-	if (!wlr_backend_start(wlr)) {
+	if (!wlr_backend_start(backend)) {
 		wlr_log(WLR_ERROR, "Failed to start backend");
-		wlr_backend_destroy(wlr);
+		wlr_backend_destroy(backend);
 		exit(1);
 	}
 	wl_display_run(display);