mirror of
https://github.com/alinanorakari/Pebble-Time-Watchface-Super-Simple.git
synced 2026-01-15 12:05:21 +01:00
initial commit from CloudPebble
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186
src/main.c
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186
src/main.c
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#include <pebble.h>
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#define MINUTE_COLOR GColorWhite
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#define HOUR_COLOR GColorRed
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#define PEG_COLOR GColorDarkGray
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#define BG_COLOR GColorBlack
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#define ANTIALIASING true
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#define FINAL_RADIUS 88
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#define HAND_WIDTH 7
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#define DOT_RADIUS HAND_WIDTH/4
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#define HAND_MARGIN_OUTER 10-(HAND_WIDTH/2)
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#define HAND_MARGIN_INNER 0
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#define ANIMATION_DURATION 600
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#define ANIMATION_DELAY 150
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typedef struct {
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int hours;
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int minutes;
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} Time;
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static Window *s_main_window;
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static Layer *s_canvas_layer;
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static GPoint s_center;
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static Time s_last_time;
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static int s_radius = 0;
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static bool s_animating = false;
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static float anim_offset;
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/*************************** AnimationImplementation **************************/
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static void animation_started(Animation *anim, void *context) {
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s_animating = true;
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}
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static void animation_stopped(Animation *anim, bool stopped, void *context) {
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s_animating = false;
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}
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static void animate(int duration, int delay, AnimationImplementation *implementation, bool handlers) {
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Animation *anim = animation_create();
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animation_set_duration(anim, duration);
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animation_set_delay(anim, delay);
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animation_set_curve(anim, AnimationCurveEaseInOut);
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animation_set_implementation(anim, implementation);
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if(handlers) {
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animation_set_handlers(anim, (AnimationHandlers) {
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.started = animation_started,
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.stopped = animation_stopped
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}, NULL);
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}
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animation_schedule(anim);
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}
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/************************************ UI **************************************/
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static void tick_handler(struct tm *tick_time, TimeUnits changed) {
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// Store time
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s_last_time.hours = tick_time->tm_hour;
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s_last_time.hours -= (s_last_time.hours > 12) ? 12 : 0;
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s_last_time.minutes = tick_time->tm_min;
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// Redraw
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if(s_canvas_layer) {
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layer_mark_dirty(s_canvas_layer);
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}
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}
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static void update_proc(Layer *layer, GContext *ctx) {
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// Color background?
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GRect bounds = layer_get_bounds(layer);
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graphics_context_set_fill_color(ctx, BG_COLOR);
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graphics_fill_rect(ctx, bounds, 0, GCornerNone);
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graphics_context_set_antialiased(ctx, ANTIALIASING);
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// Don't use current time while animating
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Time mode_time = s_last_time;
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// Adjust for minutes through the hour
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float hour_angle = TRIG_MAX_ANGLE * mode_time.hours / 12;
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float minute_angle = TRIG_MAX_ANGLE * mode_time.minutes / 60;
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hour_angle += (minute_angle / TRIG_MAX_ANGLE) * (TRIG_MAX_ANGLE / 12);
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if (s_animating) {
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hour_angle += anim_offset;
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minute_angle -= anim_offset;
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}
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// Plot hands
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GPoint minute_hand_outer = (GPoint) {
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.x = (int16_t)(sin_lookup(TRIG_MAX_ANGLE * mode_time.minutes / 60) * (int32_t)(s_radius - HAND_MARGIN_OUTER) / TRIG_MAX_RATIO) + s_center.x,
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.y = (int16_t)(-cos_lookup(TRIG_MAX_ANGLE * mode_time.minutes / 60) * (int32_t)(s_radius - HAND_MARGIN_OUTER) / TRIG_MAX_RATIO) + s_center.y,
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};
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GPoint minute_hand_inner = (GPoint) {
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.x = (int16_t)(sin_lookup(TRIG_MAX_ANGLE * mode_time.minutes / 60) * (int32_t)HAND_MARGIN_INNER / TRIG_MAX_RATIO) + s_center.x,
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.y = (int16_t)(-cos_lookup(TRIG_MAX_ANGLE * mode_time.minutes / 60) * (int32_t)HAND_MARGIN_INNER / TRIG_MAX_RATIO) + s_center.y,
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};
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GPoint hour_hand_outer = (GPoint) {
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.x = (int16_t)(sin_lookup(hour_angle) * (int32_t)(s_radius - HAND_MARGIN_OUTER - (0.3 * s_radius)) / TRIG_MAX_RATIO) + s_center.x,
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.y = (int16_t)(-cos_lookup(hour_angle) * (int32_t)(s_radius - HAND_MARGIN_OUTER - (0.3 * s_radius)) / TRIG_MAX_RATIO) + s_center.y,
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};
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GPoint hour_hand_inner = (GPoint) {
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.x = (int16_t)(sin_lookup(hour_angle) * (int32_t)HAND_MARGIN_INNER / TRIG_MAX_RATIO) + s_center.x,
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.y = (int16_t)(-cos_lookup(hour_angle) * (int32_t)HAND_MARGIN_INNER / TRIG_MAX_RATIO) + s_center.y,
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};
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// Draw hands with positive length only
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if((s_radius - HAND_MARGIN_OUTER) > HAND_MARGIN_INNER) {
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if(s_radius > 2 * HAND_MARGIN_OUTER) {
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graphics_context_set_stroke_color(ctx, HOUR_COLOR);
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graphics_context_set_stroke_width(ctx, HAND_WIDTH);
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graphics_draw_line(ctx, hour_hand_inner, hour_hand_outer);
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}
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if(s_radius > HAND_MARGIN_OUTER) {
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graphics_context_set_stroke_color(ctx, MINUTE_COLOR);
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graphics_context_set_stroke_width(ctx, HAND_WIDTH);
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graphics_draw_line(ctx, minute_hand_inner, minute_hand_outer);
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}
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}
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graphics_context_set_fill_color(ctx, PEG_COLOR);
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graphics_fill_circle(ctx, s_center, DOT_RADIUS);
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}
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static void window_load(Window *window) {
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Layer *window_layer = window_get_root_layer(window);
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GRect window_bounds = layer_get_bounds(window_layer);
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s_center = grect_center_point(&window_bounds);
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s_canvas_layer = layer_create(window_bounds);
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layer_set_update_proc(s_canvas_layer, update_proc);
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layer_add_child(window_layer, s_canvas_layer);
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}
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static void window_unload(Window *window) {
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layer_destroy(s_canvas_layer);
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}
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/*********************************** App **************************************/
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static int anim_percentage(AnimationProgress dist_normalized, int max) {
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return (int)(float)(((float)dist_normalized / (float)ANIMATION_NORMALIZED_MAX) * (float)max);
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}
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static void radius_update(Animation *anim, AnimationProgress dist_normalized) {
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s_radius = anim_percentage(dist_normalized, FINAL_RADIUS);
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layer_mark_dirty(s_canvas_layer);
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}
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static void init() {
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srand(time(NULL));
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time_t t = time(NULL);
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struct tm *time_now = localtime(&t);
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tick_handler(time_now, MINUTE_UNIT);
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s_main_window = window_create();
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window_set_window_handlers(s_main_window, (WindowHandlers) {
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.load = window_load,
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.unload = window_unload,
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});
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window_stack_push(s_main_window, true);
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tick_timer_service_subscribe(MINUTE_UNIT, tick_handler);
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// Prepare animations
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AnimationImplementation radius_impl = {
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.update = radius_update
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};
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animate(ANIMATION_DURATION, ANIMATION_DELAY, &radius_impl, false);
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}
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static void deinit() {
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window_destroy(s_main_window);
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}
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int main() {
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init();
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app_event_loop();
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deinit();
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}
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