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Add compact calendar feed to e-paper display + HA

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Marcus Scholz
2026-07-11 21:41:21 +02:00
parent 38da2cebdd
commit 3b7c30634e
4 changed files with 289 additions and 0 deletions
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esphome/epaperframe.yaml
+172
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@@ -212,6 +212,12 @@ text_sensor:
entity_id: weather.zuhause
id: weather
# Display-ready JSON produced by the Home Assistant calendar template sensor.
- platform: homeassistant
entity_id: sensor.epaper_kalenderdaten
attribute: entries
id: calendar_entries
time:
@@ -1083,3 +1089,169 @@ display:
ESP_LOGI("WiFi", "Unlikely");
}
}
- id: calendar
lambda: |-
auto now = id(homeassistant_time).now();
const char *months[] = {"Januar", "Februar", "März", "April", "Mai", "Juni",
"Juli", "August", "September", "Oktober", "November", "Dezember"};
const char *weekdays[] = {"Mo", "Di", "Mi", "Do", "Fr", "Sa", "So"};
const int year = now.year;
const int month = now.month;
const int today = now.day_of_month;
auto days_in_month = [](int calendar_year, int calendar_month) {
const int days[] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
if (calendar_month == 2) {
return (calendar_year % 4 == 0 && (calendar_year % 100 != 0 || calendar_year % 400 == 0)) ? 29 : 28;
}
return days[calendar_month - 1];
};
auto weekday_monday = [](int calendar_year, int calendar_month, int day) {
const int offsets[] = {0, 3, 2, 5, 0, 3, 5, 1, 4, 6, 2, 4};
calendar_year -= calendar_month < 3;
const int sunday_first = (calendar_year + calendar_year / 4 - calendar_year / 100 +
calendar_year / 400 + offsets[calendar_month - 1] + day) % 7;
return (sunday_first + 6) % 7;
};
auto iso_weeks_in_year = [&weekday_monday](int calendar_year) {
// 28 December is always in the final ISO week of its year.
const int day_of_year = 362 + ((calendar_year % 4 == 0 &&
(calendar_year % 100 != 0 || calendar_year % 400 == 0)) ? 1 : 0);
const int weekday = weekday_monday(calendar_year, 12, 28) + 1;
return (day_of_year - weekday + 10) / 7;
};
auto iso_week = [&weekday_monday, &days_in_month, &iso_weeks_in_year](int calendar_year, int calendar_month, int day) {
int day_of_year = day;
for (int current_month = 1; current_month < calendar_month; current_month++) {
day_of_year += days_in_month(calendar_year, current_month);
}
const int weekday = weekday_monday(calendar_year, calendar_month, day) + 1;
int week = (day_of_year - weekday + 10) / 7;
if (week < 1) return iso_weeks_in_year(calendar_year - 1);
if (week > iso_weeks_in_year(calendar_year)) return 1;
return week;
};
/* LEFT PANE: agenda */
it.image(10, 10, id(c1024_logo));
it.print(100, 27, id(roboto_med_30), TextAlign::BASELINE_LEFT, "TERMINE");
it.line(10, 55, 355, 55);
it.line(365, 10, 365, 352);
DynamicJsonDocument calendar_doc(3072);
const DeserializationError calendar_error = deserializeJson(calendar_doc, id(calendar_entries).state.c_str());
JsonArray calendar_days = calendar_doc.as<JsonArray>();
int agenda_y = 72;
bool has_events = false;
bool has_hidden_events = false;
if (calendar_error || calendar_days.isNull()) {
it.print(18, agenda_y, id(sensor_unit), TextAlign::TOP_LEFT, "Kalenderdaten werden geladen ...");
} else if (calendar_days.size() == 0) {
it.print(18, agenda_y, id(sensor_unit), TextAlign::TOP_LEFT, "Keine Termine in den nächsten Tagen.");
} else {
for (JsonVariant day_variant : calendar_days) {
JsonObject day = day_variant.as<JsonObject>();
JsonArray events = day["events"].as<JsonArray>();
if (events.isNull() || events.size() == 0) continue;
if (agenda_y + 38 > 345) {
has_hidden_events = true;
break;
}
const int day_number = day["day"] | 0;
const char *weekday = day["weekday"] | "";
const bool is_today = (day["today"] | 0) == 1;
it.printf(30, agenda_y, id(sub_sensor_font), TextAlign::TOP_CENTER, "%d", day_number);
it.printf(30, agenda_y + 28, id(footer_font), TextAlign::TOP_CENTER, "%s", weekday);
it.print(68, agenda_y + 2, id(footer_font), TextAlign::TOP_LEFT, is_today ? "HEUTE" : "");
it.line(58, agenda_y, 58, agenda_y + 32 + events.size() * 35);
agenda_y += 36;
for (JsonVariant event_variant : events) {
if (agenda_y + 33 > 345) {
has_hidden_events = true;
break;
}
JsonObject event = event_variant.as<JsonObject>();
const char *title = event["title"] | "Ohne Titel";
const char *time = event["time"] | "";
const char *meta = event["meta"] | "";
it.printf(72, agenda_y, id(sensor_unit), TextAlign::TOP_LEFT, "%s", title);
it.printf(350, agenda_y, id(sensor_unit), TextAlign::TOP_RIGHT, "%s", time);
it.printf(72, agenda_y + 20, id(footer_font), TextAlign::TOP_LEFT, "%s", meta);
agenda_y += 35;
has_events = true;
}
agenda_y += 5;
if (has_hidden_events) break;
}
}
if (!has_events && !calendar_error && !calendar_days.isNull() && calendar_days.size() > 0) {
it.print(18, 72, id(sensor_unit), TextAlign::TOP_LEFT, "Keine Termine im sichtbaren Bereich.");
}
if (has_hidden_events) {
it.print(72, 340, id(footer_font), TextAlign::TOP_LEFT, "Weitere Termine vorhanden ...");
}
/* RIGHT TOP: month view, Monday-first with ISO week numbers */
char month_title[24];
snprintf(month_title, sizeof(month_title), "%s %d", months[month - 1], year);
it.printf(502, 18, id(sensor_unit), TextAlign::TOP_CENTER, "%s", month_title);
it.line(375, 28, 630, 28);
it.print(384, 47, id(footer_font), TextAlign::TOP_CENTER, "KW");
for (int column = 0; column < 7; column++) {
it.printf(415 + column * 30, 47, id(footer_font), TextAlign::TOP_CENTER, "%s", weekdays[column]);
}
const int first_weekday = weekday_monday(year, month, 1);
const int month_days = days_in_month(year, month);
for (int row = 0; row < 6; row++) {
const int monday_day = 1 - first_weekday + row * 7;
int week_year = year;
int week_month = month;
int week_day = monday_day;
if (week_day < 1) {
week_month--;
if (week_month == 0) {
week_month = 12;
week_year--;
}
week_day += days_in_month(week_year, week_month);
} else if (week_day > month_days) {
week_day -= month_days;
week_month++;
if (week_month == 13) {
week_month = 1;
week_year++;
}
}
const int cell_y = 69 + row * 23;
it.printf(384, cell_y, id(footer_font), TextAlign::TOP_CENTER, "%02d", iso_week(week_year, week_month, week_day));
for (int column = 0; column < 7; column++) {
const int day = row * 7 + column - first_weekday + 1;
if (day < 1 || day > month_days) continue;
const int cell_x = 415 + column * 30;
if (day == today) {
it.filled_rectangle(cell_x - 12, cell_y - 2, 25, 18, Color::BLACK);
it.printf(cell_x, cell_y, id(footer_font), Color::WHITE, TextAlign::TOP_CENTER, "%d", day);
} else {
it.printf(cell_x, cell_y, id(footer_font), TextAlign::TOP_CENTER, "%d", day);
}
}
}
/* RIGHT BOTTOM: quote placeholder, intentionally inverted */
it.filled_rectangle(375, 220, 255, 130, Color::BLACK);
it.print(502, 234, id(footer_font), Color::WHITE, TextAlign::TOP_CENTER, "DEMOTIVATION");
it.print(502, 267, id(sensor_unit), Color::WHITE, TextAlign::TOP_CENTER, "Es ist nie zu spät,");
it.print(502, 291, id(sensor_unit), Color::WHITE, TextAlign::TOP_CENTER, "die Erwartungen zu senken.");
it.print(502, 326, id(footer_font), Color::WHITE, TextAlign::TOP_CENTER, "Zitatquelle folgt");
/* FOOTER */
it.strftime(614, 380, id(footer_font), TextAlign::BASELINE_RIGHT,
"Aktualisiert um %d.%m.%Y %H:%M", now);