movement: add world clock face

6 files changed, 228 insertions, 0 deletions

diff --git a/movement/make/Makefile b/movement/make/Makefile
index 4c895322..1118da5d 100755
--- a/movement/make/Makefile
+++ b/movement/make/Makefile
@@ -29,6 +29,7 @@ SRCS += \
   ../lib/TOTP-MCU/TOTP.c \
   ../movement.c \
   ../watch_faces/clock/simple_clock_face.c \
+  ../watch_faces/clock/world_clock_face.c \
   ../watch_faces/settings/preferences_face.c \
   ../watch_faces/settings/set_time_face.c \
   ../watch_faces/complications/pulsometer_face.c \
diff --git a/movement/movement.c b/movement/movement.c
index 128011b9..2c8169b9 100644
--- a/movement/movement.c
+++ b/movement/movement.c
@@ -55,6 +55,9 @@ const int16_t movement_timezone_offsets[] = {
     840,    // 40 :  14:00:00 (Line Islands Time)
 };
 
+const char movement_valid_position_0_chars[] = " AaBbCcDdEeFGgHhIiJKLMNnOoPQrSTtUuWXYZ-='+\\/0123456789";
+const char movement_valid_position_1_chars[] = " ABCDEFHlJLNORTtUX-='01378";
+
 void cb_mode_btn_interrupt();
 void cb_light_btn_interrupt();
 void cb_alarm_btn_interrupt();
diff --git a/movement/movement.h b/movement/movement.h
index 0379fe7b..5c1f0dfa 100644
--- a/movement/movement.h
+++ b/movement/movement.h
@@ -98,6 +98,8 @@ typedef struct {
 } movement_event_t;
 
 extern const int16_t movement_timezone_offsets[];
+extern const char movement_valid_position_0_chars[];
+extern const char movement_valid_position_1_chars[];
 
 /** @brief Perform setup for your watch face.
   * @details It's tempting to say this is 'one-time' setup, but technically this function is called more than
diff --git a/movement/movement_config.h b/movement/movement_config.h
index 8802883d..ecf02bbf 100644
--- a/movement/movement_config.h
+++ b/movement/movement_config.h
@@ -2,6 +2,7 @@
 #define MOVEMENT_CONFIG_H_
 
 #include "simple_clock_face.h"
+#include "world_clock_face.h"
 #include "preferences_face.h"
 #include "set_time_face.h"
 #include "pulsometer_face.h"
diff --git a/movement/watch_faces/clock/world_clock_face.c b/movement/watch_faces/clock/world_clock_face.c
new file mode 100644
index 00000000..3cb094ba
--- /dev/null
+++ b/movement/watch_faces/clock/world_clock_face.c
@@ -0,0 +1,188 @@
+#include <stdlib.h>
+#include <string.h>
+#include "world_clock_face.h"
+#include "watch.h"
+#include "watch_utility.h"
+
+void world_clock_face_setup(movement_settings_t *settings, void ** context_ptr) {
+    (void) settings;
+    if (*context_ptr == NULL) {
+        *context_ptr = malloc(sizeof(world_clock_state_t));
+        world_clock_state_t *state = (world_clock_state_t *)*context_ptr;
+        state->settings.char_0 = 0;
+        state->settings.char_1 = 0;
+        state->settings.timezone_index = 16; // start at UTC
+    }
+}
+
+void world_clock_face_activate(movement_settings_t *settings, void *context) {
+    world_clock_state_t *state = (world_clock_state_t *)context;
+    state->current_screen = 0;
+    state->previous_date_time = 0xFFFFFFFF;
+
+    if (watch_tick_animation_is_running()) watch_stop_tick_animation();
+    if (settings->bit.clock_mode_24h) watch_set_indicator(WATCH_INDICATOR_24H);
+
+    watch_set_colon();
+}
+
+bool world_clock_face_do_display_mode(movement_event_t event, movement_settings_t *settings, world_clock_state_t *state) {
+    char buf[11];
+    uint8_t pos;
+
+    uint32_t timestamp;
+    uint32_t previous_date_time;
+    watch_date_time date_time;
+    switch (event.event_type) {
+        case EVENT_ACTIVATE:
+        case EVENT_TICK:
+        case EVENT_LOW_ENERGY_UPDATE:
+            // TODO: profile this, does this chew up power? feels like a lot of cycles to run every second.
+            date_time = watch_rtc_get_date_time();
+            timestamp = watch_utility_date_time_to_unix_time(date_time, movement_timezone_offsets[settings->bit.time_zone] * 60);
+            date_time = watch_utility_date_time_from_unix_time(timestamp, movement_timezone_offsets[state->settings.timezone_index] * 60);
+            previous_date_time = state->previous_date_time;
+            state->previous_date_time = date_time.reg;
+
+            if (date_time.reg >> 6 == previous_date_time >> 6 && event.event_type != EVENT_LOW_ENERGY_UPDATE) {
+                // everything before seconds is the same, don't waste cycles setting those segments.
+                pos = 8;
+                sprintf(buf, "%02d", date_time.unit.second);
+            } else if (date_time.reg >> 12 == previous_date_time >> 12 && event.event_type != EVENT_LOW_ENERGY_UPDATE) {
+                // everything before minutes is the same.
+                pos = 6;
+                sprintf(buf, "%02d%02d", date_time.unit.minute, date_time.unit.second);
+            } else {
+                // other stuff changed; let's do it all.
+                if (!settings->bit.clock_mode_24h) {
+                    // if we are in 12 hour mode, do some cleanup.
+                    if (date_time.unit.hour < 12) {
+                        watch_clear_indicator(WATCH_INDICATOR_PM);
+                    } else {
+                        watch_set_indicator(WATCH_INDICATOR_PM);
+                    }
+                    date_time.unit.hour %= 12;
+                    if (date_time.unit.hour == 0) date_time.unit.hour = 12;
+                }
+                pos = 0;
+                if (event.event_type == EVENT_LOW_ENERGY_UPDATE) {
+                    if (!watch_tick_animation_is_running()) watch_start_tick_animation(500);
+                    sprintf(buf, "%c%c%2d%2d%02d  ",
+                        movement_valid_position_0_chars[state->settings.char_0],
+                        movement_valid_position_1_chars[state->settings.char_1],
+                        date_time.unit.day,
+                        date_time.unit.hour,
+                        date_time.unit.minute);
+                } else {
+                    sprintf(buf, "%c%c%2d%2d%02d%02d",
+                        movement_valid_position_0_chars[state->settings.char_0],
+                        movement_valid_position_1_chars[state->settings.char_1],
+                        date_time.unit.day,
+                        date_time.unit.hour,
+                        date_time.unit.minute,
+                        date_time.unit.second);
+                }
+            }
+            watch_display_string(buf, pos);
+            break;
+        case EVENT_MODE_BUTTON_UP:
+            movement_move_to_next_face();
+            return false;
+        case EVENT_LIGHT_BUTTON_DOWN:
+            movement_illuminate_led();
+            break;
+        case EVENT_ALARM_LONG_PRESS:
+            movement_request_tick_frequency(4);
+            state->current_screen = 1;
+            break;
+        default:
+            break;
+    }
+
+    return true;
+}
+
+bool world_clock_face_do_settings_mode(movement_event_t event, movement_settings_t *settings, world_clock_state_t *state) {
+    switch (event.event_type) {
+        case EVENT_MODE_BUTTON_UP:
+            movement_move_to_next_face();
+            return false;
+        case EVENT_LIGHT_BUTTON_DOWN:
+            state->current_screen++;
+            if (state->current_screen > 3) {
+                movement_request_tick_frequency(1);
+                state->current_screen = 0;
+                state->previous_date_time = 0xFFFFFFFF;
+                world_clock_face_do_display_mode(event, settings, state);
+            }
+            break;
+        case EVENT_ALARM_BUTTON_DOWN:
+            switch (state->current_screen) {
+                case 1:
+                    state->settings.char_0++;
+                    if (state->settings.char_0 >= strlen(movement_valid_position_0_chars)) {
+                        state->settings.char_0 = 0;
+                    }
+                    break;
+                case 2:
+                    state->settings.char_1++;
+                    if (state->settings.char_1 >= strlen(movement_valid_position_1_chars)) {
+                        state->settings.char_1 = 0;
+                    }
+                    break;
+                case 3:
+                    state->settings.timezone_index++;
+                    if (state->settings.timezone_index > 40) state->settings.timezone_index = 0;
+                    break;
+            }
+            break;
+        case EVENT_TIMEOUT:
+            movement_move_to_face(0);
+            break;
+        default:
+            break;
+    }
+
+    char buf[13];
+    sprintf(buf, "%c%c %3d%02d  ",
+        movement_valid_position_0_chars[state->settings.char_0],
+        movement_valid_position_1_chars[state->settings.char_1],
+        (int8_t) (movement_timezone_offsets[state->settings.timezone_index] / 60),
+        (int8_t) (movement_timezone_offsets[state->settings.timezone_index] % 60) * (movement_timezone_offsets[state->settings.timezone_index] < 0 ? -1 : 1));
+    watch_set_colon();
+    watch_clear_indicator(WATCH_INDICATOR_PM);
+
+    // blink up the parameter we're setting
+    if (event.subsecond % 2) {
+        switch (state->current_screen) {
+            case 1:
+            case 2:
+                buf[state->current_screen - 1] = '_';
+                break;
+            case 3:
+                watch_clear_colon();
+                sprintf(buf + 3, "       ");
+                break;
+        }
+    }
+
+    watch_display_string(buf, 0);
+
+    return true;
+}
+
+bool world_clock_face_loop(movement_event_t event, movement_settings_t *settings, void *context) {
+    world_clock_state_t *state = (world_clock_state_t *)context;
+
+    if (state->current_screen == 0) {
+        return world_clock_face_do_display_mode(event, settings, state);
+    } else {
+        return world_clock_face_do_settings_mode(event, settings, state);
+    }
+}
+
+void world_clock_face_resign(movement_settings_t *settings, void *context) {
+    (void) settings;
+    (void) context;
+    movement_request_tick_frequency(1);
+}
diff --git a/movement/watch_faces/clock/world_clock_face.h b/movement/watch_faces/clock/world_clock_face.h
new file mode 100644
index 00000000..1c4525a4
--- /dev/null
+++ b/movement/watch_faces/clock/world_clock_face.h
@@ -0,0 +1,33 @@
+#ifndef WORLD_CLOCK_FACE_H_
+#define WORLD_CLOCK_FACE_H_
+
+#include "movement.h"
+
+typedef struct {
+    uint8_t char_0;
+    uint8_t char_1;
+    uint8_t timezone_index;
+} world_clock_settings_t;
+
+typedef struct {
+    world_clock_settings_t settings;
+    uint8_t current_screen;
+    uint32_t previous_date_time;
+} world_clock_state_t;
+
+void world_clock_face_setup(movement_settings_t *settings, void ** context_ptr);
+void world_clock_face_activate(movement_settings_t *settings, void *context);
+bool world_clock_face_loop(movement_event_t event, movement_settings_t *settings, void *context);
+void world_clock_face_resign(movement_settings_t *settings, void *context);
+
+uint8_t world_clock_face_get_weekday(uint16_t day, uint16_t month, uint16_t year);
+
+static const watch_face_t world_clock_face = {
+    world_clock_face_setup,
+    world_clock_face_activate,
+    world_clock_face_loop,
+    world_clock_face_resign,
+    NULL
+};
+
+#endif // WORLD_CLOCK_FACE_H_