+ }
+
+ boolean registered_units_listener;
+
+ int current_serial;
+
+ void update_state(TelemetryState new_telemetry_state) {
+
+ if (new_telemetry_state != null)
+ telemetry_state = new_telemetry_state;
+
+ if (current_serial == 0)
+ current_serial = telemetry_state.latest_serial;
+
+ if (!registered_units_listener) {
+ registered_units_listener = true;
+ AltosPreferences.register_units_listener(this);
+ }
+
+ serials = telemetry_state.states.keySet().toArray(new Integer[0]);
+
+ update_title(telemetry_state);
+
+ AltosDebug.debug("update state current serial %d\n", current_serial);
+
+ AltosState state = null;
+ if (telemetry_state.states.containsKey(current_serial))
+ state = telemetry_state.states.get(current_serial);
+
+ update_ui(telemetry_state, state, telemetry_state.location);
+
+ start_timer();
+ }
+
+ boolean same_string(String a, String b) {
+ if (a == null) {
+ if (b == null)
+ return true;
+ return false;
+ } else {
+ if (b == null)
+ return false;
+ return a.equals(b);
+ }
+ }
+
+
+ private int blend_component(int a, int b, double r, int shift, int mask) {
+ return ((int) (((a >> shift) & mask) * r + ((b >> shift) & mask) * (1 - r)) & mask) << shift;
+ }
+ private int blend_color(int a, int b, double r) {
+ return (blend_component(a, b, r, 0, 0xff) |
+ blend_component(a, b, r, 8, 0xff) |
+ blend_component(a, b, r, 16, 0xff) |
+ blend_component(a, b, r, 24, 0xff));
+ }
+
+ int state_age(AltosState state) {
+ return (int) ((System.currentTimeMillis() - state.received_time + 500) / 1000);
+ }
+
+ void set_screen_on(int age) {
+ if (age < 60)
+ getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
+ else
+ getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
+ }
+
+ void update_age() {
+ if (saved_state != null) {
+ int age = state_age(saved_state);
+
+ double age_scale = age / 100.0;
+
+ if (age_scale > 1.0)
+ age_scale = 1.0;
+
+ mAgeView.setTextColor(blend_color(mAgeOldColor, mAgeNewColor, age_scale));
+
+ set_screen_on(age);
+
+ String text;
+ if (age < 60)
+ text = String.format("%ds", age);
+ else if (age < 60 * 60)
+ text = String.format("%dm", age / 60);
+ else if (age < 60 * 60 * 24)
+ text = String.format("%dh", age / (60 * 60));
+ else
+ text = String.format("%dd", age / (24 * 60 * 60));
+ mAgeView.setText(text);
+ }
+ }
+
+ void update_ui(TelemetryState telem_state, AltosState state, Location location) {
+
+ int prev_state = AltosLib.ao_flight_invalid;
+
+ AltosGreatCircle from_receiver = null;
+
+ if (saved_state != null)
+ prev_state = saved_state.state;