Import of the watch repository from Pebble

src/fw/apps/demo_apps/double_tap_test.c

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+/*
+ * Copyright 2024 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "double_tap_test.h"
+
+#include <stdio.h>
+
+#include "applib/accel_service.h"
+#include "applib/app.h"
+#include "applib/fonts/fonts.h"
+#include "applib/ui/ui.h"
+#include "process_state/app_state/app_state.h"
+#include "resource/resource_ids.auto.h"
+#include "resource/system_resource.h"
+#include "system/logging.h"
+#include "kernel/pbl_malloc.h"
+
+typedef struct {
+  Window window;
+  TextLayer thumbsup_layer;
+  TextLayer text_layer;
+  char text[40];
+  uint32_t count;
+  AppTimer *thumbsup_timer;
+} AppData;
+
+static void prv_hide_thumbsup(void *ctx) {
+  AppData *data = ctx;
+  text_layer_set_text(&data->thumbsup_layer, "");
+}
+
+static void prv_show_thumbsup(AppData *data) {
+  app_timer_cancel(data->thumbsup_timer);
+  text_layer_set_text(&data->thumbsup_layer, "👍");
+  data->thumbsup_timer = app_timer_register(1000, prv_hide_thumbsup, data);
+}
+
+static void prv_set_tap_text(AppData *data, uint32_t count, AccelAxisType axis) {
+  char axes[] = {'X', 'Y', 'Z'};
+  snprintf(data->text, sizeof(data->text), "Axis: %c\nDouble Taps: %6"PRIu32, axes[axis], count);
+  text_layer_set_text(&data->text_layer, data->text);
+}
+
+static void prv_window_load(Window *window) {
+  AppData *data = window_get_user_data(window);
+
+  GSize size = window->layer.frame.size;
+
+  TextLayer *thumbsup_layer = &data->thumbsup_layer;
+  text_layer_init(thumbsup_layer, &(GRect){{0, 1 * (size.h / 3)}, {size.w, 50}});
+  text_layer_set_font(thumbsup_layer, fonts_get_system_font(FONT_KEY_GOTHIC_28));
+  text_layer_set_text_alignment(thumbsup_layer, GTextAlignmentCenter);
+  layer_add_child(&window->layer, (Layer *)thumbsup_layer);
+
+  TextLayer *text_layer = &data->text_layer;
+  text_layer_init(text_layer, &(GRect){{0, 2 * (size.h / 3)}, {size.w, 40}});
+  text_layer_set_text_alignment(text_layer, GTextAlignmentCenter);
+  data->count = 0;
+  prv_set_tap_text(data, 0, 0);
+  layer_add_child(&window->layer, (Layer *)text_layer);
+}
+
+static void prv_handle_tap(AccelAxisType axis, int32_t direction) {
+  AppData *data = app_state_get_user_data();
+  prv_set_tap_text(data, ++data->count, axis);
+  prv_show_thumbsup(data);
+}
+
+static void prv_handle_init(void) {
+  AppData *data = (AppData*) app_malloc(sizeof(AppData));
+
+  app_state_set_user_data(data);
+
+  window_init(&data->window, WINDOW_NAME("Double Tap Test"));
+  window_set_user_data(&data->window, data);
+  window_set_window_handlers(&data->window, &(WindowHandlers) {
+      .load = prv_window_load });
+
+  const bool animated = true;
+  app_window_stack_push(&data->window, animated);
+
+  accel_double_tap_service_subscribe(prv_handle_tap);
+}
+
+static void prv_handle_deinit(void) {
+  AppData *data = app_state_get_user_data();
+  app_free(data);
+}
+
+static void s_main(void) {
+  prv_handle_init();
+
+  app_event_loop();
+
+  prv_handle_deinit();
+}
+
+const PebbleProcessMd* double_tap_test_get_info() {
+  static const PebbleProcessMdSystem s_accel_config_info = {
+    .common.main_func = s_main,
+    .name = "Double Tap Test"
+  };
+  return (const PebbleProcessMd*) &s_accel_config_info;
+}