Fixes and improvements (#132)

- Fix glitch when turning on WiFi: It would temporarily show "No networks found" right before starting the first scan.
- Fix spinner to use Assets.h
- Replace statusbar battery icons 
- Better statusbar icon for when WiFi is on but not connected
- Replace statusbar WiFi icons and Wifi Manage RSSI/lock icons
- Fix for crash when timer is null in I2cScanner
- Deprecate Spacer
- Fixes for toolbar layout (simplified)
- Improved ImageViewer app: center image and add filename text on the bottom
- Add LV debug params to sdkconfig.developer
- Disabled LV spinner, msgbox and window widgets. These have equivalents in Tactility.

Tactility/Source/app/imageviewer/ImageViewer.cpp

@@ -3,25 +3,39 @@
 #include "lvgl.h"
 #include "lvgl/Style.h"
 #include "lvgl/Toolbar.h"
+#include "StringUtils.h"
 
 namespace tt::app::imageviewer {
 
+extern const AppManifest manifest;
+
 #define TAG "image_viewer"
 
 static void onShow(AppContext& app, lv_obj_t* parent) {
-    lv_obj_set_flex_flow(parent, LV_FLEX_FLOW_COLUMN);
-    lvgl::toolbar_create(parent, app);
-
-    lv_obj_t* wrapper = lv_obj_create(parent);
-    lv_obj_set_width(wrapper, LV_PCT(100));
-    lv_obj_set_flex_grow(wrapper, 1);
-    lv_obj_set_flex_flow(wrapper, LV_FLEX_FLOW_COLUMN);
+    auto wrapper = lv_obj_create(parent);
+    lv_obj_set_size(wrapper, LV_PCT(100), LV_PCT(100));
+    lv_obj_set_style_border_width(wrapper, 0, 0);
     lvgl::obj_set_style_no_padding(wrapper);
-    lvgl::obj_set_style_bg_invisible(wrapper);
 
-    lv_obj_t* image = lv_img_create(wrapper);
+    auto toolbar = lvgl::toolbar_create(wrapper, app);
+    lv_obj_align(toolbar, LV_ALIGN_TOP_MID, 0, 0);
+
+    auto* image_wrapper = lv_obj_create(wrapper);
+    lv_obj_align_to(image_wrapper, toolbar, LV_ALIGN_OUT_BOTTOM_LEFT, 0, 0);
+    lv_obj_set_width(image_wrapper, LV_PCT(100));
+    auto parent_height = lv_obj_get_height(wrapper);
+    lv_obj_set_height(image_wrapper, parent_height - TOOLBAR_HEIGHT);
+    lv_obj_set_flex_flow(image_wrapper, LV_FLEX_FLOW_COLUMN);
+    lv_obj_set_flex_align(image_wrapper, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER);
+    lvgl::obj_set_style_no_padding(image_wrapper);
+    lvgl::obj_set_style_bg_invisible(image_wrapper);
+
+    auto* image = lv_image_create(image_wrapper);
     lv_obj_align(image, LV_ALIGN_CENTER, 0, 0);
 
+    auto* file_label = lv_label_create(wrapper);
+    lv_obj_align_to(file_label, wrapper, LV_ALIGN_BOTTOM_LEFT, 0, 0);
+
     std::shared_ptr<const Bundle> bundle = app.getParameters();
     tt_check(bundle != nullptr, "Parameters not set");
     std::string file_argument;
@@ -29,6 +43,10 @@ static void onShow(AppContext& app, lv_obj_t* parent) {
         std::string prefixed_path = "A:" + file_argument;
         TT_LOG_I(TAG, "Opening %s", prefixed_path.c_str());
         lv_img_set_src(image, prefixed_path.c_str());
+        auto path = string::getLastPathSegment(file_argument);
+        lv_label_set_text(file_label, path.c_str());
+    } else {
+        lv_label_set_text(file_label, "File not found");
     }
 }