1 files changed, 112 insertions, 0 deletions
diff --git a/movement/watch_faces/demo/hello_there_face.c b/movement/watch_faces/demo/hello_there_face.c
new file mode 100644
index 00000000..f21cb762
--- /dev/null
+++ b/movement/watch_faces/demo/hello_there_face.c
@@ -0,0 +1,112 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2022 Joey Castillo
+ *
+ * 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 "hello_there_face.h"
+#include "watch.h"
+
+void hello_there_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;
+    // 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(hello_there_state_t));
+    }
+}
+
+void hello_there_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...
+    hello_there_state_t *state = (hello_there_state_t *)context;
+    // ...and set the initial state of our watch face. We start out displaying the word 'Hello',
+    state->current_word = 0;
+    // and animate by default.
+    state->animating = true;
+}
+
+bool hello_there_face_loop(movement_event_t event, movement_settings_t *settings, void *context) {
+    (void) settings;
+    hello_there_state_t *state = (hello_there_state_t *)context;
+
+    switch (event.event_type) {
+        case EVENT_ACTIVATE:
+        case EVENT_TICK:
+            // on activate and tick, if we are animating,
+            if (state->animating) {
+                // we display the current word,
+                if (state->current_word == 0) watch_display_string("Hello ", 4);
+                else watch_display_string(" there", 4);
+                // and increment it so that it will update on the next tick.
+                state->current_word = (state->current_word + 1) % 2;
+            }
+            break;
+        case EVENT_LIGHT_BUTTON_UP:
+            // when the user presses 'light', we illuminate the LED. We could override this if
+            // our UI needed an additional button for input, consuming the light button press
+            // but not illuminating the LED.
+            movement_illuminate_led();
+            break;
+        case EVENT_MODE_BUTTON_UP:
+            // when the user presses 'mode', we tell movement to move to the next watch face.
+            // movement will call our resign function, clear the screen, and transfer control
+            // to the next watch face in the list.
+            movement_move_to_next_face();
+            break;
+        case EVENT_ALARM_BUTTON_UP:
+            // when the user presses 'alarm', we toggle the state of the animation. If animating,
+            // we stop; if stopped, we resume.
+            state->animating = !state->animating;   
+            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);
+        default:
+            break;
+    }
+
+    return true;
+}
+
+void hello_there_face_resign(movement_settings_t *settings, void *context) {
+    // our watch face, like most watch faces, has nothing special to do when resigning.
+    // watch faces that enable a peripheral or interact with a sensor may want to turn it off here.
+    (void) settings;
+    (void) context;
+}