+ }
+
+
+ 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;
+
+ if (state != null) {
+ set_screen_on(state_age(state));
+
+ if (state.state == AltosLib.ao_flight_stateless) {
+ boolean prev_locked = false;
+ boolean locked = false;
+
+ if(state.gps != null)
+ locked = state.gps.locked;
+ if (saved_state != null && saved_state.gps != null)
+ prev_locked = saved_state.gps.locked;
+ if (prev_locked != locked) {
+ String currentTab = mTabHost.getCurrentTabTag();
+ if (locked) {
+ if (currentTab.equals("pad")) mTabHost.setCurrentTabByTag("descent");
+ } else {
+ if (currentTab.equals("descent")) mTabHost.setCurrentTabByTag("pad");
+ }
+ }
+ } else {
+ if (prev_state != state.state) {
+ String currentTab = mTabHost.getCurrentTabTag();
+ switch (state.state) {
+ case AltosLib.ao_flight_boost:
+ if (currentTab.equals("pad")) mTabHost.setCurrentTabByTag("ascent");
+ break;
+ case AltosLib.ao_flight_drogue:
+ if (currentTab.equals("ascent")) mTabHost.setCurrentTabByTag("descent");
+ break;
+ case AltosLib.ao_flight_landed:
+ if (currentTab.equals("descent")) mTabHost.setCurrentTabByTag("landed");
+ break;
+ case AltosLib.ao_flight_stateless:
+ if (currentTab.equals("pad")) mTabHost.setCurrentTabByTag("descent");
+ break;
+ }
+ }
+ }
+
+ if (location != null && state.gps != null && state.gps.locked) {
+ double altitude = 0;
+ if (location.hasAltitude())
+ altitude = location.getAltitude();
+ from_receiver = new AltosGreatCircle(location.getLatitude(),
+ location.getLongitude(),
+ altitude,
+ state.gps.lat,
+ state.gps.lon,
+ state.gps.alt);
+ }