Ken Van Hoeylandt
371 lines
14 KiB
C++
371 lines
14 KiB
C++
#include <Tactility/app/wificonnect/WifiConnect.h>
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#include <Tactility/service/wifi/Wifi.h>
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#include <Tactility/service/wifi/WifiApSettings.h>
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#include <Tactility/service/wifi/WifiGlobals.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 <lvgl/lvgl.h>
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#include <lvgl/widgets/spinner.h>
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#include <lvgl/widgets/toolbar.h>
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#include <tactility/log.h>
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#include <lvgl.h>
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#include <cstring>
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namespace tt::app::wificonnect {
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constexpr auto* TAG = "WifiConnect";
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extern const ::AppManifest manifest;
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namespace {
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struct Context {
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uint32_t appInstanceId;
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std::string initialSsid;
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std::string initialPassword;
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// Touched only from the LVGL task: directly by onConnectPressed() (an LVGL event callback,
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// which already runs with the LVGL lock held), and by onWifiEvent() (a wifi-pubsub
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// callback running on some other thread) which explicitly wraps its touches in
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// lvgl_lock()/lvgl_unlock() - see WifiApSettings.cpp for the same convention.
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bool connecting = false;
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bool connectionError = false;
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lv_obj_t* ssid_textarea = nullptr;
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lv_obj_t* ssid_error = nullptr;
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lv_obj_t* password_textarea = nullptr;
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lv_obj_t* password_error = nullptr;
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lv_obj_t* connect_button = nullptr;
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lv_obj_t* remember_switch = nullptr;
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lv_obj_t* connecting_spinner = nullptr;
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lv_obj_t* connection_error = nullptr;
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PubSub<service::wifi::WifiEvent>::SubscriptionHandle wifiSubscription = nullptr;
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};
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void updateView(Context* ctx);
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void resetErrors(Context* ctx);
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void setLoading(Context* ctx, bool loading);
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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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// Runs on the wifi service's pubsub thread, not the LVGL task or this app's own thread.
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void onWifiEvent(Context* ctx, service::wifi::WifiEvent event) {
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bool shouldClose = false;
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lvgl_lock();
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if (event.type == WIFI_EVENT_TYPE_STATION_CONNECTION_RESULT) {
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if (event.connection_error == WIFI_STATION_CONNECTION_ERROR_NONE) {
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if (ctx->connecting) {
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ctx->connecting = false;
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shouldClose = true;
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}
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} else {
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if (ctx->connecting) {
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ctx->connecting = false;
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ctx->connectionError = true;
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updateView(ctx);
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}
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}
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}
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updateView(ctx);
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lvgl_unlock();
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if (shouldClose) {
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// Async, non-blocking - same reasoning as onBackPressed() (must not call
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// app_manager_stop() on ourselves); safe to call from any thread.
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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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}
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void resetErrors(Context* ctx) {
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lv_obj_add_flag(ctx->password_error, LV_OBJ_FLAG_HIDDEN);
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lv_obj_add_flag(ctx->ssid_error, LV_OBJ_FLAG_HIDDEN);
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lv_obj_add_flag(ctx->connection_error, LV_OBJ_FLAG_HIDDEN);
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}
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void setLoading(Context* ctx, bool loading) {
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if (loading) {
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lv_obj_add_flag(ctx->connect_button, LV_OBJ_FLAG_HIDDEN);
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lv_obj_remove_flag(ctx->connecting_spinner, LV_OBJ_FLAG_HIDDEN);
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lv_obj_add_state(ctx->password_textarea, LV_STATE_DISABLED);
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lv_obj_add_state(ctx->ssid_textarea, LV_STATE_DISABLED);
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lv_obj_add_state(ctx->remember_switch, LV_STATE_DISABLED);
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} else {
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lv_obj_remove_flag(ctx->connect_button, LV_OBJ_FLAG_HIDDEN);
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lv_obj_add_flag(ctx->connecting_spinner, LV_OBJ_FLAG_HIDDEN);
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lv_obj_remove_state(ctx->password_textarea, LV_STATE_DISABLED);
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lv_obj_remove_state(ctx->ssid_textarea, LV_STATE_DISABLED);
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lv_obj_remove_state(ctx->remember_switch, LV_STATE_DISABLED);
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}
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}
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void updateView(Context* ctx) {
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if (ctx->connect_button == nullptr) {
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// Buried (e.g. this window's own connecting state closed it, or a future dialog opens
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// on top) - see destroyWidgets().
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return;
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}
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if (ctx->connectionError) {
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setLoading(ctx, false);
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resetErrors(ctx);
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lv_label_set_text(ctx->connection_error, "Connection failed");
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lv_obj_remove_flag(ctx->connection_error, LV_OBJ_FLAG_HIDDEN);
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}
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}
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void onConnectPressed(lv_event_t* event) {
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auto* ctx = static_cast<Context*>(lv_event_get_user_data(event));
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ctx->connectionError = false;
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resetErrors(ctx);
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const char* ssid = lv_textarea_get_text(ctx->ssid_textarea);
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size_t ssid_len = strlen(ssid);
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if (ssid_len > TT_WIFI_SSID_LIMIT) {
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LOG_E(TAG, "SSID too long");
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lv_label_set_text(ctx->ssid_error, "SSID too long");
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lv_obj_remove_flag(ctx->ssid_error, LV_OBJ_FLAG_HIDDEN);
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return;
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}
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const char* password = lv_textarea_get_text(ctx->password_textarea);
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size_t password_len = strlen(password);
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if (password_len > TT_WIFI_CREDENTIALS_PASSWORD_LIMIT) {
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LOG_E(TAG, "Password too long");
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lv_label_set_text(ctx->password_error, "Password too long");
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lv_obj_remove_flag(ctx->password_error, LV_OBJ_FLAG_HIDDEN);
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return;
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}
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bool store = lv_obj_get_state(ctx->remember_switch) & LV_STATE_CHECKED;
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setLoading(ctx, true);
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service::wifi::settings::WifiApSettings settings;
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settings.password = password;
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settings.ssid = ssid;
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settings.channel = 0;
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settings.autoConnect = TT_WIFI_AUTO_CONNECT; // No UI yet, so use global setting
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ctx->connecting = true;
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service::wifi::connect(settings, store);
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}
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void createBottomButtons(Context* ctx, lv_obj_t* parent) {
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auto* button_container = lv_obj_create(parent);
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lv_obj_set_width(button_container, LV_PCT(100));
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lv_obj_set_height(button_container, LV_SIZE_CONTENT);
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lv_obj_set_style_pad_all(button_container, 0, LV_STATE_DEFAULT);
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lv_obj_set_style_pad_gap(button_container, 0, LV_STATE_DEFAULT);
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lv_obj_set_style_border_width(button_container, 0, LV_STATE_DEFAULT);
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ctx->remember_switch = lv_switch_create(button_container);
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lv_obj_add_state(ctx->remember_switch, LV_STATE_CHECKED);
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lv_obj_align(ctx->remember_switch, LV_ALIGN_LEFT_MID, 0, 0);
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auto* remember_label = lv_label_create(button_container);
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lv_label_set_text(remember_label, "Remember");
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lv_obj_align(remember_label, LV_ALIGN_CENTER, 0, 0);
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lv_obj_align_to(remember_label, ctx->remember_switch, LV_ALIGN_OUT_RIGHT_MID, 4, 0);
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ctx->connecting_spinner = lvgl_spinner_create(button_container);
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lv_obj_align(ctx->connecting_spinner, LV_ALIGN_RIGHT_MID, 0, 0);
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lv_obj_add_flag(ctx->connecting_spinner, LV_OBJ_FLAG_HIDDEN);
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ctx->connect_button = lv_btn_create(button_container);
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auto* connect_label = lv_label_create(ctx->connect_button);
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lv_label_set_text(connect_label, "Connect");
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lv_obj_align(ctx->connect_button, LV_ALIGN_RIGHT_MID, 0, 0);
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lv_obj_add_event_cb(ctx->connect_button, onConnectPressed, LV_EVENT_SHORT_CLICKED, ctx);
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}
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// Runs with the LVGL lock already held, possibly on another app's thread - see
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// WindowDestroyWidgetsFn's warnings. Must stay lock-free: only nulls pointers.
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void destroyWidgets(void* userData) {
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auto* ctx = static_cast<Context*>(userData);
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ctx->ssid_textarea = nullptr;
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ctx->ssid_error = nullptr;
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ctx->password_textarea = nullptr;
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ctx->password_error = nullptr;
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ctx->connect_button = nullptr;
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ctx->remember_switch = nullptr;
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ctx->connecting_spinner = nullptr;
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ctx->connection_error = nullptr;
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}
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// TODO: Standardize dialogs
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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, "Wi-Fi Connect");
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// The global toolbar nav callback only knows how to stop old-model apps.
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lvgl_toolbar_set_nav_action(toolbar, LV_SYMBOL_CLOSE, onBackPressed, ctx);
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auto* wrapper = lv_obj_create(parent);
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lv_obj_set_width(wrapper, LV_PCT(100));
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lv_obj_set_flex_grow(wrapper, 1);
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lv_obj_set_flex_flow(wrapper, LV_FLEX_FLOW_COLUMN);
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// SSID
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auto* ssid_wrapper = lv_obj_create(wrapper);
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lv_obj_set_width(ssid_wrapper, LV_PCT(100));
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lv_obj_set_height(ssid_wrapper, LV_SIZE_CONTENT);
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lv_obj_set_style_pad_all(ssid_wrapper, 0, LV_STATE_DEFAULT);
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lv_obj_set_style_pad_gap(ssid_wrapper, 0, LV_STATE_DEFAULT);
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lv_obj_set_style_border_width(ssid_wrapper, 0, LV_STATE_DEFAULT);
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auto* ssid_label_wrapper = lv_obj_create(ssid_wrapper);
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lv_obj_set_width(ssid_label_wrapper, LV_PCT(50));
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lv_obj_set_height(ssid_label_wrapper, LV_SIZE_CONTENT);
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lv_obj_align(ssid_label_wrapper, LV_ALIGN_LEFT_MID, 0, LV_STATE_DEFAULT);
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lv_obj_set_style_border_width(ssid_label_wrapper, 0, LV_STATE_DEFAULT);
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lv_obj_set_style_pad_left(ssid_label_wrapper, 0, LV_STATE_DEFAULT);
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lv_obj_set_style_pad_right(ssid_label_wrapper, 0, LV_STATE_DEFAULT);
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auto* ssid_label = lv_label_create(ssid_label_wrapper);
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lv_label_set_text(ssid_label, "Network:");
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ctx->ssid_textarea = lv_textarea_create(ssid_wrapper);
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lv_textarea_set_one_line(ctx->ssid_textarea, true);
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lv_obj_align(ctx->ssid_textarea, LV_ALIGN_RIGHT_MID, 0, 0);
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lv_obj_set_width(ctx->ssid_textarea, LV_PCT(50));
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ctx->ssid_error = lv_label_create(wrapper);
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lv_obj_set_style_text_color(ctx->ssid_error, lv_color_make(255, 50, 50), LV_STATE_DEFAULT);
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lv_obj_add_flag(ctx->ssid_error, LV_OBJ_FLAG_HIDDEN);
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// Password
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auto* password_wrapper = lv_obj_create(wrapper);
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lv_obj_set_width(password_wrapper, LV_PCT(100));
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lv_obj_set_height(password_wrapper, LV_SIZE_CONTENT);
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lv_obj_set_style_pad_all(password_wrapper, 0, LV_STATE_DEFAULT);
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lv_obj_set_style_pad_gap(password_wrapper, 0, LV_STATE_DEFAULT);
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lv_obj_set_style_border_width(password_wrapper, 0, LV_STATE_DEFAULT);
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auto* password_label_wrapper = lv_obj_create(password_wrapper);
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lv_obj_set_width(password_label_wrapper, LV_PCT(50));
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lv_obj_set_height(password_label_wrapper, LV_SIZE_CONTENT);
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lv_obj_align_to(password_label_wrapper, password_wrapper, LV_ALIGN_LEFT_MID, 0, 0);
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lv_obj_set_style_border_width(password_label_wrapper, 0, LV_STATE_DEFAULT);
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lv_obj_set_style_pad_left(password_label_wrapper, 0, LV_STATE_DEFAULT);
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lv_obj_set_style_pad_right(password_label_wrapper, 0, LV_STATE_DEFAULT);
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auto* password_label = lv_label_create(password_label_wrapper);
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lv_label_set_text(password_label, "Password:");
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ctx->password_textarea = lv_textarea_create(password_wrapper);
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lv_textarea_set_one_line(ctx->password_textarea, true);
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lv_textarea_set_password_mode(ctx->password_textarea, true);
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lv_obj_align(ctx->password_textarea, LV_ALIGN_RIGHT_MID, 0, 0);
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lv_obj_set_width(ctx->password_textarea, LV_PCT(50));
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ctx->password_error = lv_label_create(wrapper);
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lv_obj_set_style_text_color(ctx->password_error, lv_color_make(255, 50, 50), LV_STATE_DEFAULT);
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lv_obj_add_flag(ctx->password_error, LV_OBJ_FLAG_HIDDEN);
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// Connection error
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ctx->connection_error = lv_label_create(wrapper);
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lv_obj_set_style_text_color(ctx->connection_error, lv_color_make(255, 50, 50), LV_STATE_DEFAULT);
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lv_obj_add_flag(ctx->connection_error, LV_OBJ_FLAG_HIDDEN);
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// Bottom buttons
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createBottomButtons(ctx, wrapper);
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// Init from app parameters
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if (!ctx->initialSsid.empty()) {
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lv_textarea_set_text(ctx->ssid_textarea, ctx->initialSsid.c_str());
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lv_group_focus_obj(ctx->password_textarea);
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}
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if (!ctx->initialPassword.empty()) {
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lv_textarea_set_text(ctx->password_textarea, ctx->initialPassword.c_str());
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}
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}
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int32_t appMain(uint32_t appInstanceId, int argc, char* argv[]) {
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Context ctx {};
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ctx.appInstanceId = appInstanceId;
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ctx.initialSsid = (argc > 0) ? argv[0] : std::string();
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ctx.initialPassword = (argc > 1) ? argv[1] : std::string();
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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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// Subscribed once here, not in createWidgets(): that callback re-runs on every
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// burial/resurface rebuild, and re-subscribing there would leak the previous subscription
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// (and its captured ctx pointer) every time, only the last of which shutdown ever cleans up.
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ctx.wifiSubscription = service::wifi::getPubsub()->subscribe([&ctx](auto event) {
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onWifiEvent(&ctx, event);
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});
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WindowId window = window_manager_create_ext(appInstanceId, createWidgets, destroyWidgets, &ctx);
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bool shouldClose = false;
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while (!shouldClose) {
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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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switch (event.type) {
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case APP_EVENT_CLOSE:
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app_manager_finish(appInstanceId);
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shouldClose = true;
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break;
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default:
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break;
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}
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}
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if (ctx.wifiSubscription != nullptr) {
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service::wifi::getPubsub()->unsubscribe(ctx.wifiSubscription);
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}
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window_manager_remove(window);
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app_event_unsubscribe(&sub);
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return 0;
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}
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} // namespace
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void start(const std::string& ssid, const std::string& password) {
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const char* argv[] = { ssid.c_str(), password.c_str() };
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uint32_t instanceId = 0;
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app_manager_start_with_parameters(manifest.id, 2, argv, &instanceId);
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}
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extern const ::AppManifest manifest = {
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.id = "tactility.wificonnect",
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.name = "Wi-Fi Connect",
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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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} // namespace
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