mirror of
https://github.com/ByteWelder/Tactility.git
synced 2026-08-21 09:25:06 +00:00
293 lines
9.4 KiB
C++
293 lines
9.4 KiB
C++
#include <Tactility/app/timezone/TimeZone.h>
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#include <Tactility/LogMessages.h>
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#include <Tactility/MountPoints.h>
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#include <Tactility/Mutex.h>
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#include <Tactility/StringUtils.h>
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#include <Tactility/Timer.h>
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#include <Tactility/settings/Time.h>
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#include <app/event.h>
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#include <app/manager.h>
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#include <app/manifest.h>
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#include <lvgl_window_manager/window_manager.h>
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#include <tactility/log.h>
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#include <lvgl/lvgl.h>
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#include <lvgl/icons/shared.h>
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#include <lvgl/fonts.h>
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#include <lvgl/widgets/toolbar.h>
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#include <memory>
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namespace tt::app::timezone {
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constexpr auto* TAG = "TimeZone";
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extern const ::AppManifest manifest;
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namespace {
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struct TimeZoneEntry {
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std::string name;
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std::string code;
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};
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struct Context {
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uint32_t appInstanceId;
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Mutex mutex;
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std::vector<TimeZoneEntry> entries;
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std::unique_ptr<Timer> updateTimer;
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lv_obj_t* listWidget = nullptr;
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lv_obj_t* filterTextareaWidget = nullptr;
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bool saveTimeZone = false;
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// The eventual appMain() return value - see AlertDialog.cpp's Context::result for why this
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// is a plain (non-atomic) field safely shared between the LVGL thread (writer, before
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// emitting APP_EVENT_CLOSE) and this app's own thread (reader, after waking from it).
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int32_t result = 1; // Cancelled - safety-net default if closed without picking a time zone
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};
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// The last picked name/code. Static rather than per-instance: simple, and in practice only one
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// TimeZone dialog is ever open at a time. Written on the LVGL thread (the item-selected
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// callback, before emitting APP_EVENT_CLOSE); read by the parent via getLastName()/getLastCode()
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// after receiving that event - safe without a lock for the same reason Context::result is (see
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// AlertDialog.cpp).
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std::string lastName;
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std::string lastCode;
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bool parseEntry(const std::string& input, std::string& outName, std::string& outCode) {
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std::string partial_strip = input.substr(1, input.size() - 3);
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auto first_end_quote = partial_strip.find('"');
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if (first_end_quote == std::string::npos) {
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return false;
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} else {
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outName = partial_strip.substr(0, first_end_quote);
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outCode = partial_strip.substr(first_end_quote + 3);
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return true;
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}
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}
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void onTextareaValueChanged(lv_event_t* e) {
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auto* ctx = static_cast<Context*>(lv_event_get_user_data(e));
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if (ctx->mutex.lock(100 / portTICK_PERIOD_MS)) {
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if (ctx->updateTimer->isRunning()) {
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ctx->updateTimer->stop();
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}
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ctx->updateTimer->start();
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ctx->mutex.unlock();
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}
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}
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void createListItem(Context* ctx, lv_obj_t* list, const std::string& title, size_t index) {
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auto* btn = lv_list_add_button(list, nullptr, title.c_str());
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struct ButtonContext {
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Context* ctx;
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size_t index;
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};
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auto* buttonCtx = new ButtonContext { ctx, index };
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lv_obj_add_event_cb(btn, [](lv_event_t* e) {
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auto* buttonCtx = static_cast<ButtonContext*>(lv_event_get_user_data(e));
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delete buttonCtx;
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}, LV_EVENT_DELETE, buttonCtx);
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lv_obj_add_event_cb(btn, [](lv_event_t* e) {
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auto* buttonCtx = static_cast<ButtonContext*>(lv_event_get_user_data(e));
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auto* ctx = buttonCtx->ctx;
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auto index = buttonCtx->index;
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LOG_I(TAG, "Selected item at index %d", (int)index);
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auto& entry = ctx->entries[index];
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if (ctx->saveTimeZone) {
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settings::setTimeZone(entry.name, entry.code);
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}
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lastName = entry.name;
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lastCode = entry.code;
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ctx->result = 0; // Ok
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AppEvent closeEvent { .type = APP_EVENT_CLOSE, .timestamp = 0, .result = {} };
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app_event_emit(ctx->appInstanceId, &closeEvent);
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}, LV_EVENT_SHORT_CLICKED, buttonCtx);
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}
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void readTimeZones(Context* ctx, std::string filter) {
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auto path = std::string(file::MOUNT_POINT_SYSTEM) + "/timezones.csv";
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auto* file = fopen(path.c_str(), "rb");
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if (file == nullptr) {
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LOG_E(TAG, "Failed to open %s", path.c_str());
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return;
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}
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char line[96];
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std::string name;
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std::string code;
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uint32_t count = 0;
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std::vector<TimeZoneEntry> new_entries;
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while (fgets(line, 96, file)) {
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if (parseEntry(line, name, code)) {
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if (string::lowercase(name).find(filter) != std::string::npos) {
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count++;
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new_entries.push_back({.name = name, .code = code});
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// Safety guard
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if (count > 50) {
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// TODO: Show warning that we're not displaying a complete list
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break;
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}
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}
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} else {
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LOG_E(TAG, "Parse error at line %llu", count);
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}
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}
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fclose(file);
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if (ctx->mutex.lock(100 / portTICK_PERIOD_MS)) {
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ctx->entries = std::move(new_entries);
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ctx->mutex.unlock();
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} else {
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LOG_E(TAG, LOG_MESSAGE_MUTEX_LOCK_FAILED);
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}
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LOG_I(TAG, "Processed %llu entries", count);
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}
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void updateList(Context* ctx) {
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if (lvgl_try_lock(200 / portTICK_PERIOD_MS)) {
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std::string filter = string::lowercase(std::string(lv_textarea_get_text(ctx->filterTextareaWidget)));
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lvgl_unlock();
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readTimeZones(ctx, filter);
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} else {
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LOG_E(TAG, LOG_MESSAGE_MUTEX_LOCK_FAILED_FMT, "TimeZone LVGL");
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return;
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}
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if (lvgl_try_lock(200 / portTICK_PERIOD_MS)) {
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if (ctx->mutex.lock(100 / portTICK_PERIOD_MS)) {
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lv_obj_clean(ctx->listWidget);
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uint32_t index = 0;
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for (auto& entry : ctx->entries) {
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createListItem(ctx, ctx->listWidget, entry.name, index);
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index++;
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}
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ctx->mutex.unlock();
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}
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lvgl_unlock();
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} else {
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LOG_E(TAG, LOG_MESSAGE_MUTEX_LOCK_FAILED_FMT, "TimeZone LVGL");
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}
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}
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void onBackPressed(lv_event_t* event) {
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auto* ctx = static_cast<Context*>(lv_event_get_user_data(event));
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// Async, non-blocking - must NOT call app_manager_stop() directly here: that bound-waits
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// (thread_join) for this app's own thread to finish, which needs the LVGL lock
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// (window_manager_remove()) - but this callback runs ON the LVGL task, which would
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// deadlock against itself.
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AppEvent closeEvent { .type = APP_EVENT_CLOSE, .timestamp = 0, .result = {} };
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app_event_emit(ctx->appInstanceId, &closeEvent);
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}
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void createWidgets(lv_obj_t* parent, void* userData) {
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auto* ctx = static_cast<Context*>(userData);
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lv_obj_set_flex_flow(parent, LV_FLEX_FLOW_COLUMN);
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lv_obj_set_style_pad_row(parent, 0, LV_STATE_DEFAULT);
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auto* toolbar = lvgl_toolbar_create(parent, "Select Time zone");
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lvgl_toolbar_set_nav_action(toolbar, LV_SYMBOL_CLOSE, onBackPressed, ctx);
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auto* search_wrapper = lv_obj_create(parent);
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lv_obj_set_size(search_wrapper, LV_PCT(100), LV_SIZE_CONTENT);
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lv_obj_set_flex_flow(search_wrapper, LV_FLEX_FLOW_ROW);
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lv_obj_set_flex_align(search_wrapper, LV_FLEX_ALIGN_START, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_START);
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lv_obj_set_style_pad_all(search_wrapper, 0, 0);
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lv_obj_set_style_border_width(search_wrapper, 0, 0);
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auto* icon = lv_image_create(search_wrapper);
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lv_obj_set_style_margin_left(icon, 8, 0);
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lv_obj_set_style_image_recolor_opa(icon, 255, 0);
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lv_obj_set_style_image_recolor(icon, lv_theme_get_color_primary(parent), 0);
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lv_obj_set_style_text_font(icon, lvgl_get_shared_icon_font(), LV_STATE_DEFAULT);
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lv_image_set_src(icon, LVGL_ICON_SHARED_SEARCH);
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auto* textarea = lv_textarea_create(search_wrapper);
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lv_textarea_set_placeholder_text(textarea, "e.g. Europe/Amsterdam");
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lv_textarea_set_one_line(textarea, true);
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lv_obj_add_event_cb(textarea, onTextareaValueChanged, LV_EVENT_VALUE_CHANGED, ctx);
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ctx->filterTextareaWidget = textarea;
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lv_obj_set_flex_grow(textarea, 1);
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auto* list = lv_list_create(parent);
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lv_obj_set_width(list, LV_PCT(100));
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lv_obj_set_flex_grow(list, 1);
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lv_obj_set_style_border_width(list, 0, 0);
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ctx->listWidget = list;
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}
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int32_t appMain(uint32_t appInstanceId, int argc, char* argv[]) {
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// argv layout: [0]="1"/"0" (saveTimeZone).
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Context ctx;
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ctx.appInstanceId = appInstanceId;
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ctx.saveTimeZone = argc > 0 && argv[0][0] == '1';
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ctx.updateTimer = std::make_unique<Timer>(Timer::Type::Once, 500 / portTICK_PERIOD_MS, [&ctx] {
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updateList(&ctx);
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});
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AppEventSubscription sub {};
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sub.app_instance_id = appInstanceId;
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app_event_subscribe(&sub);
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WindowId window = window_manager_create(appInstanceId, createWidgets, &ctx);
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ctx.updateTimer->start();
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while (true) {
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AppEvent event {};
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if (app_event_await(&sub, &event, portMAX_DELAY) != ERROR_NONE) {
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break;
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}
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if (event.type == APP_EVENT_CLOSE) {
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break;
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}
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}
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ctx.updateTimer->stop();
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window_manager_remove(window);
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app_event_unsubscribe(&sub);
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return ctx.result;
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}
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} // namespace
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uint32_t start(uint32_t callerAppInstanceId, bool saveTimeZone) {
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const char* argv[] = { saveTimeZone ? "1" : "0" };
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uint32_t instanceId = 0;
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app_manager_start_for_result(manifest.id, callerAppInstanceId, 1, argv, &instanceId);
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return instanceId;
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}
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std::string getLastName() {
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return lastName;
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}
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std::string getLastCode() {
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return lastCode;
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}
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extern const ::AppManifest manifest = {
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.id = "tactility.timezone",
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.name = "Select Time zone",
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.category = APP_CATEGORY_SYSTEM,
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.location = { APP_LOCATION_MEMORY, reinterpret_cast<void*>(appMain) },
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.flags = APP_MANIFEST_FLAG_HIDDEN,
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};
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}
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