Decimal time face (#260)

* Update movement_faces.h

adding decimal_time_face.h to build

* Decimal Time, a new clock face

This face presents the current time as hours and hundredths of an hour.

* add decimal time to Makefile

4 files changed, 254 insertions, 0 deletions

diff --git a/movement/make/Makefile b/movement/make/Makefile
index f4ffa546..625c7729 100644
--- a/movement/make/Makefile
+++ b/movement/make/Makefile
@@ -116,6 +116,7 @@ SRCS += \
   ../watch_faces/complication/geomancy_face.c \
   ../watch_faces/clock/simple_clock_bin_led_face.c \
   ../watch_faces/complication/flashlight_face.c \
+  ../watch_faces/clock/decimal_time_face.c \
   ../watch_faces/clock/wyoscan_face.c \
 # New watch faces go above this line.
 
diff --git a/movement/movement_faces.h b/movement/movement_faces.h
index 9b83f141..ff34c063 100644
--- a/movement/movement_faces.h
+++ b/movement/movement_faces.h
@@ -93,6 +93,7 @@
 #include "dual_timer_face.h"
 #include "simple_clock_bin_led_face.h"
 #include "flashlight_face.h"
+#include "decimal_time_face.h"
 #include "wyoscan_face.h"
 // New includes go above this line.
 
diff --git a/movement/watch_faces/clock/decimal_time_face.c b/movement/watch_faces/clock/decimal_time_face.c
new file mode 100644
index 00000000..f0543298
--- /dev/null
+++ b/movement/watch_faces/clock/decimal_time_face.c
@@ -0,0 +1,180 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2023 Curtis J. Brown <mrbrown8@juno.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include "decimal_time_face.h"
+#include "watch.h"
+
+
+
+void decimal_time_face_setup(movement_settings_t *settings, uint8_t watch_face_index, void ** context_ptr) {
+    // These next two lines just silence the compiler warnings associated with unused parameters.
+    // We have no use for the settings or the watch_face_index, so we make that explicit here.
+    (void) settings;
+    (void) watch_face_index;
+    (void) context_ptr;
+    // At boot, context_ptr will be NULL indicating that we don't have anyplace to store our context.
+    if (*context_ptr == NULL) {
+        // in this case, we allocate an area of memory sufficient to store the stuff we need to track.
+        *context_ptr = malloc(sizeof(decimal_time_face_state_t));
+        decimal_time_face_state_t *state = (decimal_time_face_state_t *)*context_ptr;
+        state->chime_enabled = false;
+        state->features_to_show = 0 ;
+    }
+
+
+}
+
+
+void decimal_time_face_activate(movement_settings_t *settings, void *context) {
+
+    // same as above: silence the warning, we don't need to check the settings.
+    (void) settings;
+
+    // we do however need to set some things in our context. Here we cast it to the correct type...
+    decimal_time_face_state_t *state = (decimal_time_face_state_t *)context;
+
+    watch_set_indicator(WATCH_INDICATOR_24H);  // This face is always 24h, so just set the indicators
+    watch_clear_indicator(WATCH_INDICATOR_PM);
+
+    if (state->chime_enabled) {
+        watch_set_indicator(WATCH_INDICATOR_BELL);
+    }
+
+
+}
+
+
+
+bool decimal_time_face_loop(movement_event_t event, movement_settings_t *settings, void *context) {
+
+    (void) settings;
+    decimal_time_face_state_t *state = (decimal_time_face_state_t *)context;
+
+    char buf[16];
+    uint8_t centihours, decimal_seconds;
+    watch_date_time date_time;
+    
+    switch (event.event_type) {
+        case EVENT_ACTIVATE:
+        case EVENT_TICK:
+            // on activate and tick
+            
+            date_time = watch_rtc_get_date_time();
+            
+            centihours = (( date_time.unit.minute * 60 + date_time.unit.second ) * 100 ) / 3600;  // Integer division, fractions get dropped, no need for abs() (bonus)
+
+            decimal_seconds = ( date_time.unit.minute * 60 + date_time.unit.second ) % 36 ;
+            
+            switch (state->features_to_show) {
+                case 0:
+                    sprintf( buf, "dT  %02d%02d  ",                       date_time.unit.hour, centihours );
+                    break;
+                case 1:
+                    sprintf( buf, "dT  %02d%02d%2d",                      date_time.unit.hour, centihours, decimal_seconds );
+                    break;
+                case 2:
+                    sprintf( buf, "dT%2d%02d%02d  ",  date_time.unit.day, date_time.unit.hour, centihours );
+                    break;
+                case 3:
+                    sprintf( buf, "dT%2d%02d%02d%2d", date_time.unit.day, date_time.unit.hour, centihours, decimal_seconds );
+                    break;
+            }
+
+            watch_display_string(buf, 0);  // display calculated time
+            
+            // at the top of every hour...
+            if (date_time.unit.minute == 0 && date_time.unit.second == 0 && state->chime_enabled) {
+                watch_set_indicator(WATCH_INDICATOR_SIGNAL);
+                watch_buzzer_play_note(BUZZER_NOTE_E6, 75);
+                watch_buzzer_play_note(BUZZER_NOTE_REST, 15);
+                watch_buzzer_play_note(BUZZER_NOTE_E6, 75);
+                watch_clear_indicator(WATCH_INDICATOR_SIGNAL);
+            }
+            
+            break;
+
+        case EVENT_ALARM_LONG_PRESS:   
+            state->chime_enabled = !state->chime_enabled;   // just like from simple_watch_face
+            if (state->chime_enabled) 
+                watch_set_indicator(WATCH_INDICATOR_BELL);
+            else
+                watch_clear_indicator(WATCH_INDICATOR_BELL);
+            break;
+
+        case EVENT_ALARM_BUTTON_UP:
+            state->features_to_show += 1 ;  // cycle thru what's to be shown
+            break;
+
+
+        case EVENT_LOW_ENERGY_UPDATE:
+            // This low energy mode update occurs once a minute, if the watch face is in the
+            // foreground when Movement enters low energy mode. We have the option of supporting
+            // this mode, but since our watch face animates once a second, the "Hello there" face
+            // isn't very useful in this mode. So we choose not to support it. (continued below)
+            break;
+
+        case EVENT_TIMEOUT:
+            // ... Instead, we respond to the timeout event. This event happens after a configurable
+            // interval on screen (1-30 minutes). The watch will give us this event as a chance to
+            // resign control if we want to, and in this case, we do.
+            // This function will return the watch to the first screen (usually a simple clock),
+            // and it will do it long before the watch enters low energy mode. This ensures we
+            // won't be on screen, and thus opts us out of getting the EVENT_LOW_ENERGY_UPDATE above.
+            //movement_move_to_face(0);
+            break;
+
+        default:
+            movement_default_loop_handler(event, settings);
+            break;
+
+    }
+
+    return true;
+}
+
+void decimal_time_face_resign(movement_settings_t *settings, void *context) {
+    // our watch face, like most watch faces, has nothing special to do when resigning.
+    // there are no peripherals or sensors here to worry about turning off.
+    (void) settings;
+    (void) context;
+
+}
+
+
+// void decimal_time_face_wants_background_task() {
+// 
+// }
+
+
+
+
+
+
+
+
+
+
+
diff --git a/movement/watch_faces/clock/decimal_time_face.h b/movement/watch_faces/clock/decimal_time_face.h
new file mode 100644
index 00000000..b9f14f33
--- /dev/null
+++ b/movement/watch_faces/clock/decimal_time_face.h
@@ -0,0 +1,72 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2023 Curtis J. Brown <mrbrown8@juno.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef DECIMAL_TIME_FACE_H_
+#define DECIMAL_TIME_FACE_H_
+
+#include "movement.h"
+
+/*
+ * DECIMAL TIME FACE
+ * 
+ * This face presents the current time as hours and hundredths of an hour. Every hundreth of an hour, or "centihour", 
+ * occurs every 36 seconds. Because they range from 0 to 99, centihours, in the seventies range, will be displayed with a lowercase 7.
+ * 
+ * See https://en.wikipedia.org/wiki/Decimal_time#Decimal_hours
+ *  
+ * This method of timekeeping is used by the United States Postal Service.
+ * http://www.branch38nalc.com/sitebuildercontent/sitebuilderfiles/CONVERSION_TABLE_TIME.pdf
+ * https://postalemployeenetwork.com/time-conversion-print.htm
+ * 
+ * This method may be used by other organizations as well
+ * https://www.labor.nc.gov/workplace-rights/employer-responsibilities/time-conversion-chart-minutes-decimal-hours
+ * https://uh.edu/office-of-finance/payroll/time_conversion_chart_minutes_to_decimalhours.pdf
+ * https://www.placer.ca.gov/DocumentCenter/View/3860/Decimals-to-Minutes-Conversion-Table-PDF
+ * https://hr.colostate.edu/minute-to-decimal-conversion-chart/
+ * 
+ * Many thanks go to Joey Castillo for making this project happen.
+ * 
+ */
+
+typedef struct {
+    bool chime_enabled;            // did the user enable hourly chime for this face? 
+    uint8_t features_to_show : 2 ; // what features are to be displayed?
+} decimal_time_face_state_t;
+
+void decimal_time_face_setup(movement_settings_t *settings, uint8_t watch_face_index, void ** context_ptr);
+void decimal_time_face_activate(movement_settings_t *settings, void *context);
+bool decimal_time_face_loop(movement_event_t event, movement_settings_t *settings, void *context);
+void decimal_time_face_resign(movement_settings_t *settings, void *context);
+// void decimal_time_face_wants_background_task();
+
+
+#define decimal_time_face ((const watch_face_t){ \
+    decimal_time_face_setup, \
+    decimal_time_face_activate, \
+    decimal_time_face_loop, \
+    decimal_time_face_resign, \
+    NULL, \
+})
+
+#endif // DECIMAL_TIME_FACE_H_