implemented basic desktop

components/furi/src/app_manifest.h

@@ -12,11 +12,16 @@ typedef struct _lv_obj_t lv_obj_t;
 typedef enum {
     AppTypeService,
     AppTypeSystem,
+    AppTypeDesktop,
     AppTypeUser
 } AppType;
 
 typedef enum {
-    AppStackSizeNormal = 2048
+    AppStackSizeTiny = 512,
+    AppStackSizeSmall = 1024,
+    AppStackSizeNormal = 2048,
+    AppStackSizeLarge = 4096,
+    AppStackSizeHuge = 8192,
 } AppStackSize;
 
 typedef void (*AppOnStart)(void _Nonnull* parameter);

components/furi/src/app_manifest_registry.c

@@ -64,16 +64,16 @@ const AppManifest _Nullable* app_manifest_registry_find_by_id(const char* id) {
     return (manifest != NULL) ? *manifest : NULL;
 }
 
-void app_manifest_registry_for_each_of_type(AppType type, AppManifestCallback callback) {
+void app_manifest_registry_for_each_of_type(AppType type, void* _Nullable context, AppManifestCallback callback) {
     APP_REGISTRY_FOR_EACH(manifest, {
         if (manifest->type == type) {
-            callback(manifest);
+            callback(manifest, context);
         }
     });
 }
 
-void app_manifest_registry_for_each(AppManifestCallback callback) {
+void app_manifest_registry_for_each(AppManifestCallback callback, void* _Nullable context) {
     APP_REGISTRY_FOR_EACH(manifest, {
-        callback(manifest);
+        callback(manifest, context);
     });
 }

components/furi/src/app_manifest_registry.h

@@ -9,14 +9,14 @@ extern "C" {
 extern const AppManifest* const INTERNAL_APP_MANIFESTS[];
 extern const size_t INTERNAL_APP_COUNT;
 
-typedef void (*AppManifestCallback)(const AppManifest*);
+typedef void (*AppManifestCallback)(const AppManifest*, void* context);
 
 void app_manifest_registry_init();
 void app_manifest_registry_add(const AppManifest _Nonnull* manifest);
 void app_manifest_registry_remove(const AppManifest _Nonnull* manifest);
 const AppManifest _Nullable* app_manifest_registry_find_by_id(const char* id);
-void app_manifest_registry_for_each(AppManifestCallback callback);
-void app_manifest_registry_for_each_of_type(AppType type, AppManifestCallback callback);
+void app_manifest_registry_for_each(AppManifestCallback callback, void* _Nullable context);
+void app_manifest_registry_for_each_of_type(AppType type, void* _Nullable context, AppManifestCallback callback);
 
 #ifdef __cplusplus
 }

components/nanobake/src/apps/services/desktop/desktop.c

@@ -1,18 +1,59 @@
 #include "desktop.h"
-#include "furi_extra_defines.h"
+#include "lvgl.h"
+#include "check.h"
+#include "record.h"
+#include "apps/services/loader/loader.h"
+#include "apps/services/gui/gui.h"
+#include "apps/services/gui/view_port.h"
+#include "app_manifest_registry.h"
 
-static void desktop_start(void* param) {
-    UNUSED(param);
-    printf("desktop app init\n");
+static void on_open_app(lv_event_t* e) {
+    lv_event_code_t code = lv_event_get_code(e);
+    if (code == LV_EVENT_CLICKED) {
+        const AppManifest* manifest = lv_event_get_user_data(e);
+        FURI_RECORD_TRANSACTION(RECORD_LOADER, Loader*, loader, {
+            loader_start_app_nonblocking(loader, manifest->id, NULL);
+        })
+    }
+}
+
+static void add_app_to_list(const AppManifest* manifest, void* _Nullable parent) {
+    furi_check(parent);
+    lv_obj_t* list = (lv_obj_t*)parent;
+    lv_obj_t* btn = lv_list_add_btn(list, LV_SYMBOL_FILE, manifest->name);
+    lv_obj_add_event_cb(btn, &on_open_app, LV_EVENT_CLICKED, (void*)manifest);
+}
+
+static void desktop_show(lv_obj_t* parent, void* context) {
+    lv_obj_t* list = lv_list_create(parent);
+    lv_obj_set_size(list, LV_PCT(100), LV_PCT(100));
+    lv_obj_center(list);
+
+    lv_list_add_text(list, "System");
+    app_manifest_registry_for_each_of_type(AppTypeSystem, list, add_app_to_list);
+    lv_list_add_text(list, "User");
+    app_manifest_registry_for_each_of_type(AppTypeUser, list, add_app_to_list);
+}
+
+static void desktop_start() {
+    ViewPort* view_port = view_port_alloc();
+    view_port_draw_callback_set(view_port, &desktop_show, NULL);
+    FURI_RECORD_TRANSACTION(RECORD_GUI, Gui*, gui, {
+        gui_add_view_port(gui, view_port, GuiLayerDesktop);
+    })
+}
+
+static void desktop_stop() {
+    furi_crash("desktop_stop is not implemented");
 }
 
 const AppManifest desktop_app = {
     .id = "desktop",
     .name = "Desktop",
     .icon = NULL,
-    .type = AppTypeService,
+    .type = AppTypeDesktop,
     .on_start = &desktop_start,
-    .on_stop = NULL,
+    .on_stop = &desktop_stop,
     .on_show = NULL,
     .stack_size = AppStackSizeNormal
 };

components/nanobake/src/apps/services/gui/gui_draw.c

@@ -1,176 +1,69 @@
 #include "check.h"
 #include "gui_i.h"
+#include "log.h"
+#include "record.h"
 #include "esp_lvgl_port.h"
 #include "apps/services/gui/widgets/widgets.h"
+#include "apps/services/loader/loader.h"
 
-static void gui_redraw_status_bar(Gui* gui, bool need_attention) {
-    /*
-    ViewPortArray_it_t it;
-    uint8_t left_used = 0;
-    uint8_t right_used = 0;
-    uint8_t width;
+#define TAG "gui"
 
-    canvas_frame_set(
-        gui->lvgl_parent, GUI_STATUS_BAR_X, GUI_STATUS_BAR_Y, GUI_DISPLAY_WIDTH, GUI_STATUS_BAR_HEIGHT);
+static lv_obj_t* screen_with_top_bar(lv_obj_t* parent) {
+    lv_obj_set_style_bg_blacken(parent);
 
-    // for support black theme - paint white area and
-    // draw icon with transparent white color
+    lv_obj_t* vertical_container = lv_obj_create(parent);
+    lv_obj_set_size(vertical_container, LV_PCT(100), LV_PCT(100));
+    lv_obj_set_flex_flow(vertical_container, LV_FLEX_FLOW_COLUMN);
+    lv_obj_set_style_no_padding(vertical_container);
+    lv_obj_set_style_bg_blacken(vertical_container);
 
-    canvas_set_color(gui->canvas, ColorWhite);
-    canvas_draw_box(gui->canvas, 1, 1, 9, 7);
-    canvas_draw_box(gui->canvas, 7, 3, 58, 6);
-    canvas_draw_box(gui->canvas, 61, 1, 32, 7);
-    canvas_draw_box(gui->canvas, 89, 3, 38, 6);
-    canvas_set_color(gui->canvas, ColorBlack);
-    canvas_set_bitmap_mode(gui->canvas, 1);
-    canvas_draw_icon(gui->canvas, 0, 0, &I_Background_128x11);
-    canvas_set_bitmap_mode(gui->canvas, 0);
+    top_bar(vertical_container);
 
-    // Right side
-    uint8_t x = GUI_DISPLAY_WIDTH - 1;
-    ViewPortArray_it(it, gui->layers[GuiLayerStatusBarRight]);
-    while(!ViewPortArray_end_p(it) && right_used < GUI_STATUS_BAR_WIDTH) {
-        ViewPort* view_port = *ViewPortArray_ref(it);
-        if(view_port_is_enabled(view_port)) {
-            width = view_port_get_width(view_port);
-            if(!width) width = 8;
-            // Recalculate next position
-            right_used += (width + 2);
-            x -= (width + 2);
-            // Prepare work area background
-            canvas_frame_set(
-                gui->canvas,
-                x - 1,
-                GUI_STATUS_BAR_Y + 1,
-                width + 2,
-                GUI_STATUS_BAR_WORKAREA_HEIGHT + 2);
-            canvas_set_color(gui->canvas, ColorWhite);
-            canvas_draw_box(
-                gui->canvas, 0, 0, canvas_width(gui->canvas), canvas_height(gui->canvas));
-            canvas_set_color(gui->canvas, ColorBlack);
-            // ViewPort draw
-            canvas_frame_set(
-                gui->canvas, x, GUI_STATUS_BAR_Y + 2, width, GUI_STATUS_BAR_WORKAREA_HEIGHT);
-            view_port_draw(view_port, gui->canvas);
+    lv_obj_t* child_container = lv_obj_create(vertical_container);
+    lv_obj_set_width(child_container, LV_PCT(100));
+    lv_obj_set_flex_grow(child_container, 1);
+    lv_obj_set_style_no_padding(vertical_container);
+    lv_obj_set_style_bg_blacken(vertical_container);
+
+    return child_container;
+}
+
+static lv_obj_t* screen_with_top_bar_and_toolbar(lv_obj_t* parent) {
+    lv_obj_set_style_bg_blacken(parent);
+
+    lv_obj_t* vertical_container = lv_obj_create(parent);
+    lv_obj_set_size(vertical_container, LV_PCT(100), LV_PCT(100));
+    lv_obj_set_flex_flow(vertical_container, LV_FLEX_FLOW_COLUMN);
+    lv_obj_set_style_no_padding(vertical_container);
+    lv_obj_set_style_bg_blacken(vertical_container);
+
+    top_bar(vertical_container);
+
+    FURI_RECORD_TRANSACTION(RECORD_LOADER, Loader*, loader, {
+        const AppManifest* manifest = loader_get_current_app(loader);
+        if (manifest != NULL) {
+            toolbar(vertical_container, TOP_BAR_HEIGHT, manifest);
         }
-        ViewPortArray_next(it);
-    }
-    // Draw frame around icons on the right
-    if(right_used) {
-        canvas_frame_set(
-            gui->canvas,
-            GUI_DISPLAY_WIDTH - 3 - right_used,
-            GUI_STATUS_BAR_Y,
-            right_used + 3,
-            GUI_STATUS_BAR_HEIGHT);
-        canvas_set_color(gui->canvas, ColorBlack);
-        canvas_draw_rframe(
-            gui->canvas, 0, 0, canvas_width(gui->canvas), canvas_height(gui->canvas), 1);
-        canvas_draw_line(
-            gui->canvas,
-            canvas_width(gui->canvas) - 2,
-            1,
-            canvas_width(gui->canvas) - 2,
-            canvas_height(gui->canvas) - 2);
-        canvas_draw_line(
-            gui->canvas,
-            1,
-            canvas_height(gui->canvas) - 2,
-            canvas_width(gui->canvas) - 2,
-            canvas_height(gui->canvas) - 2);
-    }
+    })
 
-    // Left side
-    x = 2;
-    ViewPortArray_it(it, gui->layers[GuiLayerStatusBarLeft]);
-    while(!ViewPortArray_end_p(it) && (right_used + left_used) < GUI_STATUS_BAR_WIDTH) {
-        ViewPort* view_port = *ViewPortArray_ref(it);
-        if(view_port_is_enabled(view_port)) {
-            width = view_port_get_width(view_port);
-            if(!width) width = 8;
-            // Prepare work area background
-            canvas_frame_set(
-                gui->canvas,
-                x - 1,
-                GUI_STATUS_BAR_Y + 1,
-                width + 2,
-                GUI_STATUS_BAR_WORKAREA_HEIGHT + 2);
-            canvas_set_color(gui->canvas, ColorWhite);
-            canvas_draw_box(
-                gui->canvas, 0, 0, canvas_width(gui->canvas), canvas_height(gui->canvas));
-            canvas_set_color(gui->canvas, ColorBlack);
-            // ViewPort draw
-            canvas_frame_set(
-                gui->canvas, x, GUI_STATUS_BAR_Y + 2, width, GUI_STATUS_BAR_WORKAREA_HEIGHT);
-            view_port_draw(view_port, gui->canvas);
-            // Recalculate next position
-            left_used += (width + 2);
-            x += (width + 2);
-        }
-        ViewPortArray_next(it);
-    }
-    // Extra notification
-    if(need_attention) {
-        width = icon_get_width(&I_Hidden_window_9x8);
-        // Prepare work area background
-        canvas_frame_set(
-            gui->canvas,
-            x - 1,
-            GUI_STATUS_BAR_Y + 1,
-            width + 2,
-            GUI_STATUS_BAR_WORKAREA_HEIGHT + 2);
-        canvas_set_color(gui->canvas, ColorWhite);
-        canvas_draw_box(gui->canvas, 0, 0, canvas_width(gui->canvas), canvas_height(gui->canvas));
-        canvas_set_color(gui->canvas, ColorBlack);
-        // Draw Icon
-        canvas_frame_set(
-            gui->canvas, x, GUI_STATUS_BAR_Y + 2, width, GUI_STATUS_BAR_WORKAREA_HEIGHT);
-        canvas_draw_icon(gui->canvas, 0, 0, &I_Hidden_window_9x8);
-        // Recalculate next position
-        left_used += (width + 2);
-        x += (width + 2);
-    }
-    // Draw frame around icons on the left
-    if(left_used) {
-        canvas_frame_set(gui->canvas, 0, 0, left_used + 3, GUI_STATUS_BAR_HEIGHT);
-        canvas_draw_rframe(
-            gui->canvas, 0, 0, canvas_width(gui->canvas), canvas_height(gui->canvas), 1);
-        canvas_draw_line(
-            gui->canvas,
-            canvas_width(gui->canvas) - 2,
-            1,
-            canvas_width(gui->canvas) - 2,
-            canvas_height(gui->canvas) - 2);
-        canvas_draw_line(
-            gui->canvas,
-            1,
-            canvas_height(gui->canvas) - 2,
-            canvas_width(gui->canvas) - 2,
-            canvas_height(gui->canvas) - 2);
-    }
-    */
+    lv_obj_t* spacer = lv_obj_create(vertical_container);
+    lv_obj_set_size(spacer, 2, 2);
+    lv_obj_set_style_bg_blacken(spacer);
+
+    lv_obj_t* child_container = lv_obj_create(vertical_container);
+    lv_obj_set_width(child_container, LV_PCT(100));
+    lv_obj_set_flex_grow(child_container, 1);
+    lv_obj_set_style_no_padding(vertical_container);
+    lv_obj_set_style_bg_blacken(vertical_container);
+
+    return child_container;
 }
 
 static bool gui_redraw_window(Gui* gui) {
     ViewPort* view_port = gui_view_port_find_enabled(gui->layers[GuiLayerWindow]);
     if (view_port) {
-        lv_obj_set_style_bg_blacken(gui->lvgl_parent);
-
-        lv_obj_t* vertical_container = lv_obj_create(gui->lvgl_parent);
-        lv_obj_set_size(vertical_container, LV_PCT(100), LV_PCT(100));
-        lv_obj_set_flex_flow(vertical_container, LV_FLEX_FLOW_COLUMN);
-        lv_obj_set_style_no_padding(vertical_container);
-        lv_obj_set_style_bg_blacken(vertical_container);
-
-        top_bar(vertical_container);
-
-        lv_obj_t* window_parent = lv_obj_create(vertical_container);
-        lv_obj_set_width(window_parent, LV_PCT(100));
-        lv_obj_set_flex_grow(window_parent, 1);
-        lv_obj_set_style_no_padding(vertical_container);
-        lv_obj_set_style_bg_blacken(vertical_container);
-
-        view_port_draw(view_port, window_parent);
+        lv_obj_t* container = screen_with_top_bar_and_toolbar(gui->lvgl_parent);
+        view_port_draw(view_port, container);
         return true;
     } else {
         return false;
@@ -178,14 +71,14 @@ static bool gui_redraw_window(Gui* gui) {
 }
 
 static bool gui_redraw_desktop(Gui* gui) {
-    /*
-    canvas_frame_set(gui->lvgl_parent, 0, 0, GUI_DISPLAY_WIDTH, GUI_DISPLAY_HEIGHT);
     ViewPort* view_port = gui_view_port_find_enabled(gui->layers[GuiLayerDesktop]);
-    if(view_port) {
-        view_port_draw(view_port, gui->lvgl_parent);
+    if (view_port) {
+        lv_obj_t* container = screen_with_top_bar(gui->lvgl_parent);
+        view_port_draw(view_port, container);
         return true;
+    } else {
+        FURI_LOG_E(TAG, "no desktop layer found");
     }
-    */
 
     return false;
 }
@@ -207,12 +100,10 @@ void gui_redraw(Gui* gui) {
     furi_check(lvgl_port_lock(100));
     lv_obj_clean(gui->lvgl_parent);
 
-    gui_redraw_desktop(gui);
     if (!gui_redraw_fs(gui)) {
         if (!gui_redraw_window(gui)) {
             gui_redraw_desktop(gui);
         }
-        gui_redraw_status_bar(gui, false);
     }
 
     lvgl_port_unlock();

components/nanobake/src/apps/services/gui/view_port.c

@@ -1,8 +1,9 @@
+#include "apps/services/gui/widgets/widgets.h"
 #include "check.h"
+#include "esp_lvgl_port.h"
 #include "gui.h"
 #include "gui_i.h"
 #include "view_port_i.h"
-#include "esp_lvgl_port.h"
 
 #define TAG "viewport"
 
@@ -90,6 +91,7 @@ void view_port_draw(ViewPort* view_port, lv_obj_t* parent) {
 
     if (view_port->draw_callback) {
         lv_obj_clean(parent);
+        lv_obj_set_style_no_padding(parent);
         view_port->draw_callback(parent, view_port->draw_callback_context);
     }
 

components/nanobake/src/apps/services/gui/widgets/toolbar.c

@@ -0,0 +1,40 @@
+#include "toolbar.h"
+#include "record.h"
+#include "apps/services/gui/widgets/widgets.h"
+#include "apps/services/loader/loader.h"
+
+static void app_toolbar_close(lv_event_t* event) {
+    FURI_RECORD_TRANSACTION(RECORD_LOADER, Loader*, loader, {
+        loader_stop_app(loader);
+    })
+}
+
+void toolbar(lv_obj_t* parent, lv_coord_t offset_y, const AppManifest* manifest) {
+    lv_obj_t* toolbar = lv_obj_create(parent);
+    lv_obj_set_width(toolbar, LV_PCT(100));
+    lv_obj_set_height(toolbar, TOOLBAR_HEIGHT);
+    lv_obj_set_pos(toolbar, 0, offset_y);
+    lv_obj_set_style_no_padding(toolbar);
+    lv_obj_center(toolbar);
+    lv_obj_set_flex_flow(toolbar, LV_FLEX_FLOW_ROW);
+
+    lv_obj_t* close_button = lv_btn_create(toolbar);
+    lv_obj_set_size(close_button, TOOLBAR_HEIGHT - 4, TOOLBAR_HEIGHT - 4);
+    lv_obj_set_style_no_padding(close_button);
+    lv_obj_add_event_cb(close_button, &app_toolbar_close,LV_EVENT_CLICKED, NULL);
+    lv_obj_t* close_button_image = lv_img_create(close_button);
+    lv_img_set_src(close_button_image, LV_SYMBOL_CLOSE);
+    lv_obj_align(close_button_image, LV_ALIGN_CENTER, 0, 0);
+
+    lv_obj_t* label_container = lv_obj_create(toolbar);
+    lv_obj_set_style_no_padding(label_container);
+    lv_obj_set_height(label_container, LV_PCT(100));
+    lv_obj_set_flex_grow(label_container, 1);
+
+    lv_obj_t* label = lv_label_create(label_container);
+    lv_label_set_text(label, manifest->name);
+    lv_obj_set_style_text_font(label, &lv_font_montserrat_18, 0);
+    lv_obj_set_size(label, LV_PCT(100), TOOLBAR_FONT_HEIGHT);
+    lv_obj_set_pos(label, 0, (TOOLBAR_HEIGHT - TOOLBAR_FONT_HEIGHT - 10) / 2);
+    lv_obj_set_style_text_align(label, LV_TEXT_ALIGN_CENTER, 0);
+}

components/nanobake/src/apps/services/gui/widgets/toolbar.h

@@ -0,0 +1,17 @@
+#pragma once
+
+#include "lvgl.h"
+#include "app_manifest.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define TOOLBAR_HEIGHT 40
+#define TOOLBAR_FONT_HEIGHT 18
+
+void toolbar(lv_obj_t* parent, lv_coord_t offset_y, const AppManifest* manifest);
+
+#ifdef __cplusplus
+}
+#endif

components/nanobake/src/apps/services/gui/widgets/top_bar.c

@@ -22,5 +22,5 @@ void top_bar(lv_obj_t* parent) {
     lv_obj_set_style_bg_blacken(wifi);
     lv_obj_set_style_img_recolor(wifi, lv_color_white(), 0);
     lv_obj_set_style_img_recolor_opa(wifi, 255, 0);
-    lv_img_set_src(wifi, "A:/assets/wifi-off.png");
+    lv_img_set_src(wifi, "A:/assets/ic_small_wifi_off.png");
 }

components/nanobake/src/apps/services/gui/widgets/top_bar.h

@@ -2,7 +2,15 @@
 
 #include "lvgl.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define TOP_BAR_ICON_SIZE 18
 #define TOP_BAR_HEIGHT (TOP_BAR_ICON_SIZE + 2)
 
 void top_bar(lv_obj_t* parent);
+
+#ifdef __cplusplus
+}
+#endif

components/nanobake/src/apps/services/gui/widgets/widgets.h

@@ -1,6 +1,15 @@
 #pragma once
 
 #include "top_bar.h"
+#include "toolbar.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
 
 void lv_obj_set_style_bg_blacken(lv_obj_t* obj);
 void lv_obj_set_style_no_padding(lv_obj_t* obj);
+
+#ifdef __cplusplus
+}
+#endif

components/nanobake/src/apps/services/loader/loader.c

@@ -51,6 +51,15 @@ void loader_stop_app(Loader* loader) {
     furi_message_queue_put(loader->queue, &message, FuriWaitForever);
 }
 
+const AppManifest* _Nullable loader_get_current_app(Loader* loader) {
+    App* app = loader->app_data.app;
+    if (app != NULL) {
+        return app->manifest;
+    } else {
+        return NULL;
+    }
+}
+
 FuriPubSub* loader_get_pubsub(Loader* loader) {
     furi_assert(loader);
     // it's safe to return pubsub without locking
@@ -123,6 +132,10 @@ static void loader_start_app_with_manifest(
     const AppManifest* _Nonnull manifest,
     const char* args
 ) {
+    if (manifest->type != AppTypeUser && manifest->type != AppTypeSystem) {
+        furi_crash("app type not supported by loader");
+    }
+
     App* _Nonnull app = furi_app_alloc(manifest);
     loader->app_data.app = app;
     loader->app_data.args = (void*)args;
@@ -136,18 +149,9 @@ static void loader_start_app_with_manifest(
         loader->app_data.view_port = view_port;
         view_port_draw_callback_set(view_port, manifest->on_show, NULL);
 
-        switch (manifest->type) {
-            case AppTypeService:
-                furi_crash("service apps cannot have an on_show implementation");
-            case AppTypeSystem:
-            case AppTypeUser:
-                FURI_RECORD_TRANSACTION(RECORD_GUI, Gui*, gui, {
-                    gui_add_view_port(gui, view_port, GuiLayerWindow);
-                })
-                break;
-            default:
-                furi_crash("viewport not implemented for app type");
-        }
+        FURI_RECORD_TRANSACTION(RECORD_GUI, Gui*, gui, {
+            gui_add_view_port(gui, view_port, GuiLayerWindow);
+        })
     } else {
         loader->app_data.view_port = NULL;
     }

components/nanobake/src/apps/services/loader/loader.h

@@ -2,6 +2,7 @@
 #include "furi_core.h"
 #include "furi_string.h"
 #include "pubsub.h"
+#include "app_manifest.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -47,6 +48,7 @@ void loader_start_app_nonblocking(Loader* loader, const char* id, const char* ar
 
 void loader_stop_app(Loader* loader);
 
+const AppManifest* _Nullable loader_get_current_app(Loader* loader);
 /**
  * @brief Start application with GUI error message
  * @param[in] instance loader instance

components/nanobake/src/nanobake.c

@@ -8,23 +8,27 @@
 #define TAG "nanobake"
 
 // System services
-extern const AppManifest desktop_app;
 extern const AppManifest gui_app;
 extern const AppManifest loader_app;
 
+// Desktop
+extern const AppManifest desktop_app;
+
 // System apps
 extern const AppManifest system_info_app;
 
-void start_service(const AppManifest* _Nonnull manifest) {
-    // TODO: keep track of running services
+void start_service(const AppManifest* _Nonnull manifest, void* _Nullable context) {
+    UNUSED(context);
     FURI_LOG_I(TAG, "Starting service %s", manifest->name);
+    furi_check(manifest->on_start, "service must define on_start");
     manifest->on_start(NULL);
+    // TODO: keep track of running services
 }
 
 static void register_apps(Config* _Nonnull config) {
     FURI_LOG_I(TAG, "Registering core apps");
-    app_manifest_registry_add(&desktop_app);
     app_manifest_registry_add(&gui_app);
+    app_manifest_registry_add(&desktop_app);
     app_manifest_registry_add(&loader_app);
     app_manifest_registry_add(&system_info_app);
 
@@ -36,7 +40,13 @@ static void register_apps(Config* _Nonnull config) {
 
 static void start_services() {
     FURI_LOG_I(TAG, "Starting services");
-    app_manifest_registry_for_each_of_type(AppTypeService, start_service);
+    app_manifest_registry_for_each_of_type(AppTypeService, NULL, start_service);
+    FURI_LOG_I(TAG, "Startup complete");
+}
+
+static void start_desktop() {
+    FURI_LOG_I(TAG, "Starting desktop");
+    desktop_app.on_start(NULL);
     FURI_LOG_I(TAG, "Startup complete");
 }
 
@@ -51,4 +61,5 @@ __attribute__((unused)) extern void nanobake_start(Config* _Nonnull config) {
     register_apps(config);
 
     start_services();
+    start_desktop();
 }

main/src/hello_world/hello_world.c

@@ -3,14 +3,6 @@
 #include "apps/services/gui/gui.h"
 #include "apps/services/loader/loader.h"
 
-static void on_button_click(lv_event_t _Nonnull* event) {
-    UNUSED(event);
-
-    FURI_RECORD_TRANSACTION(RECORD_LOADER, Loader*, loader, {
-        loader_start_app_nonblocking(loader, "systeminfo", NULL);
-    })
-}
-
 static void app_show(lv_obj_t* parent, void* context) {
     UNUSED(context);
 
@@ -19,13 +11,7 @@ static void app_show(lv_obj_t* parent, void* context) {
     lv_obj_set_width(label, 200);
     lv_obj_set_style_text_align(label, LV_TEXT_ALIGN_CENTER, 0);
     lv_label_set_text(label, "Hello, world!");
-    lv_obj_align(label, LV_ALIGN_CENTER, 0, -30);
-
-    lv_obj_t* btn = lv_btn_create(parent);
-    label = lv_label_create(btn);
-    lv_label_set_text_static(label, "System Info");
-    lv_obj_align(btn, LV_ALIGN_CENTER, 0, 30);
-    lv_obj_add_event_cb(btn, on_button_click, LV_EVENT_CLICKED, NULL);
+    lv_obj_align(label, LV_ALIGN_CENTER, 0, 0);
 }
 
 const AppManifest hello_world_app = {

main/src/main.c

@@ -20,11 +20,11 @@ __attribute__((unused)) void app_main(void) {
 
     nanobake_start(&config);
 
-    FURI_RECORD_TRANSACTION(RECORD_LOADER, Loader*, loader, {
-        FuriString* error_message = furi_string_alloc();
-        if (loader_start_app(loader, hello_world_app.id, NULL, error_message) != LoaderStatusOk) {
-            FURI_LOG_E(hello_world_app.id, "%s\r\n", furi_string_get_cstr(error_message));
-        }
-        furi_string_free(error_message);
-    });
+//    FURI_RECORD_TRANSACTION(RECORD_LOADER, Loader*, loader, {
+//        FuriString* error_message = furi_string_alloc();
+//        if (loader_start_app(loader, hello_world_app.id, NULL, error_message) != LoaderStatusOk) {
+//            FURI_LOG_E(hello_world_app.id, "%s\r\n", furi_string_get_cstr(error_message));
+//        }
+//        furi_string_free(error_message);
+//    });
 }

sdkconfig.defaults

@@ -1,7 +1,13 @@
 CONFIG_IDF_TARGET="esp32"
 CONFIG_LV_COLOR_16_SWAP=y
 CONFIG_LV_USE_USER_DATA=y
+CONFIG_LV_USE_FS_STDIO=y
+CONFIG_LV_FS_STDIO_LETTER=65
+CONFIG_LV_FS_STDIO_PATH=""
+CONFIG_LV_FS_STDIO_CACHE_SIZE=4096
+CONFIG_LV_USE_PNG=y
 CONFIG_FREERTOS_TASK_NOTIFICATION_ARRAY_ENTRIES=2
 CONFIG_PARTITION_TABLE_CUSTOM=y
 CONFIG_PARTITION_TABLE_CUSTOM_FILENAME="partitions.csv"
 CONFIG_PARTITION_TABLE_FILENAME="partitions.csv"
+