Show -- for unresolved IPv4 and IPv6 addresses

display.go

@@ -42,12 +42,18 @@ func switchToMainScreen() {
 func updateDisplay() {
 	if networkManager != nil {
 		ipv4 := networkManager.IPv4String()
+		if ipv4 == "" {
+			ipv4 = "--"
+		}
 		nativeInstance.UISetVar("ip_v4_address", ipv4)
 		nativeInstance.ChangeVisibility("home_info_ipv4_addr", ipv4 != "")
 
 		ipv6 := networkManager.IPv6String()
+		if ipv6 == "" {
+			ipv6 = "--"
+		}
 		nativeInstance.UISetVar("ip_v6_address", ipv6)
-		nativeInstance.ChangeVisibility("home_info_ipv6_addr", ipv6 != "")
+		nativeInstance.ChangeVisibility("home_info_ipv6_addr", ipv6 != "" && ipv6 != "--")
 
 		nativeInstance.UISetVar("mac_address", networkManager.MACString())
 		nativeInstance.UISetVar("hostname", networkManager.Hostname())

internal/native/eez/jetkvm.eez-project

@@ -58,7 +58,7 @@
         {
           "objID": "316b04e4-a7de-4afc-c413-31f5f36d3843",
           "fileName": "vars.c",
-          "template": "#include <string.h>\n#include <stdio.h>\n//${eez-studio LVGL_INCLUDE}\n#include \"vars.h\"\n\nchar app_version[100] = { 0 };\nchar system_version[100] = { 0 };\nchar lvgl_version[32] = { 0 };\nchar main_screen[32] = \"home_screen\";\nchar mac_address[18] = { 0 };\nchar ip_v4_address[22] = { 0 };\nchar ip_v6_address[46] = { 0 };\nchar hostname[262] = { 0 };\n\nconst char *get_var_ip_v4_address() {\n    return ip_v4_address;\n}\n\nvoid set_var_ip_v4_address(const char *value) {\n    strncpy(ip_v4_address, value, sizeof(ip_v4_address) / sizeof(char));\n    ip_v4_address[sizeof(ip_v4_address) / sizeof(char) - 1] = 0;\n\n    tick_screen_home_screen();\n}\n\nconst char *get_var_ip_v6_address() {\n    return ip_v6_address;\n}\n\nvoid set_var_ip_v6_address(const char *value) {\n    strncpy(ip_v6_address, value, sizeof(ip_v6_address) / sizeof(char));\n    ip_v6_address[sizeof(ip_v6_address) / sizeof(char) - 1] = 0;\n\n    tick_screen_home_screen();\n}\n\nconst char *get_var_mac_address() {\n    return mac_address;\n}\n\nvoid set_var_mac_address(const char *value) {\n    strncpy(mac_address, value, sizeof(mac_address) / sizeof(char));\n    mac_address[sizeof(mac_address) / sizeof(char) - 1] = 0;\n\n    tick_screen_home_screen();\n    tick_screen_status_screen();\n}\n\nconst char *get_var_hostname() {\n    return hostname;\n}\n\nvoid set_var_hostname(const char *value) {\n    strncpy(hostname, value, sizeof(hostname) / sizeof(char));\n    hostname[sizeof(hostname) / sizeof(char) - 1] = 0;\n\n    tick_screen_home_screen();\n}\n\nconst char *get_var_app_version() {\n    return app_version;\n}\n\nvoid set_var_app_version(const char *value) {\n    strncpy(app_version, value, sizeof(app_version) / sizeof(char));\n    app_version[sizeof(app_version) / sizeof(char) - 1] = 0;\n    \n    tick_screen_boot_screen();\n    tick_screen_about_screen();\n}\n\nconst char *get_var_system_version() {\n    return system_version;\n}\n\nvoid set_var_system_version(const char *value) {\n    strncpy(system_version, value, sizeof(system_version) / sizeof(char));\n    system_version[sizeof(system_version) / sizeof(char) - 1] = 0;\n\n    tick_screen_about_screen();\n}\n\nconst char *get_var_lvgl_version() {\n    if (lvgl_version[0] == '\\0') {\n        char buf[32];\n        sprintf(buf, \"%d.%d.%d\", LVGL_VERSION_MAJOR, LVGL_VERSION_MINOR, LVGL_VERSION_PATCH);\n        \n        \n        strncpy(lvgl_version, buf, sizeof(lvgl_version) / sizeof(char));\n        app_version[sizeof(lvgl_version) / sizeof(char) - 1] = 0;\n    }\n    return lvgl_version;\n}\n\nvoid set_var_lvgl_version(const char *value) {\n    // intentional NOP since this is actually generated\n \n    tick_screen_about_screen();\n}\n\nconst char *get_var_main_screen() {\n    return main_screen;\n}\n\nvoid set_var_main_screen(const char *value) {\n    strncpy(main_screen, value, sizeof(main_screen) / sizeof(char));\n    main_screen[sizeof(main_screen) / sizeof(char) - 1] = 0;\n}\n"
+          "template": "#include <string.h>\n#include <stdio.h>\n//${eez-studio LVGL_INCLUDE}\n#include \"vars.h\"\n\nchar app_version[100] = { 0 };\nchar system_version[100] = { 0 };\nchar lvgl_version[32] = { 0 };\nchar main_screen[32] = \"home_screen\";\nchar mac_address[18] = { 0 };\nchar ip_v4_address[22] = \"--\";\nchar ip_v6_address[46] = \"--\";\nchar hostname[262] = { 0 };\n\nconst char *get_var_ip_v4_address() {\n    return ip_v4_address;\n}\n\nvoid set_var_ip_v4_address(const char *value) {\n    strncpy(ip_v4_address, value, sizeof(ip_v4_address) / sizeof(char));\n    ip_v4_address[sizeof(ip_v4_address) / sizeof(char) - 1] = 0;\n\n    tick_screen_home_screen();\n}\n\nconst char *get_var_ip_v6_address() {\n    return ip_v6_address;\n}\n\nvoid set_var_ip_v6_address(const char *value) {\n    strncpy(ip_v6_address, value, sizeof(ip_v6_address) / sizeof(char));\n    ip_v6_address[sizeof(ip_v6_address) / sizeof(char) - 1] = 0;\n\n    tick_screen_home_screen();\n}\n\nconst char *get_var_mac_address() {\n    return mac_address;\n}\n\nvoid set_var_mac_address(const char *value) {\n    strncpy(mac_address, value, sizeof(mac_address) / sizeof(char));\n    mac_address[sizeof(mac_address) / sizeof(char) - 1] = 0;\n\n    tick_screen_home_screen();\n    tick_screen_status_screen();\n}\n\nconst char *get_var_hostname() {\n    return hostname;\n}\n\nvoid set_var_hostname(const char *value) {\n    strncpy(hostname, value, sizeof(hostname) / sizeof(char));\n    hostname[sizeof(hostname) / sizeof(char) - 1] = 0;\n\n    tick_screen_home_screen();\n}\n\nconst char *get_var_app_version() {\n    return app_version;\n}\n\nvoid set_var_app_version(const char *value) {\n    strncpy(app_version, value, sizeof(app_version) / sizeof(char));\n    app_version[sizeof(app_version) / sizeof(char) - 1] = 0;\n    \n    tick_screen_boot_screen();\n    tick_screen_about_screen();\n}\n\nconst char *get_var_system_version() {\n    return system_version;\n}\n\nvoid set_var_system_version(const char *value) {\n    strncpy(system_version, value, sizeof(system_version) / sizeof(char));\n    system_version[sizeof(system_version) / sizeof(char) - 1] = 0;\n\n    tick_screen_about_screen();\n}\n\nconst char *get_var_lvgl_version() {\n    if (lvgl_version[0] == '\\0') {\n        char buf[32];\n        sprintf(buf, \"%d.%d.%d\", LVGL_VERSION_MAJOR, LVGL_VERSION_MINOR, LVGL_VERSION_PATCH);\n        \n        \n        strncpy(lvgl_version, buf, sizeof(lvgl_version) / sizeof(char));\n        app_version[sizeof(lvgl_version) / sizeof(char) - 1] = 0;\n    }\n    return lvgl_version;\n}\n\nvoid set_var_lvgl_version(const char *value) {\n    // intentional NOP since this is actually generated\n \n    tick_screen_about_screen();\n}\n\nconst char *get_var_main_screen() {\n    return main_screen;\n}\n\nvoid set_var_main_screen(const char *value) {\n    strncpy(main_screen, value, sizeof(main_screen) / sizeof(char));\n    main_screen[sizeof(main_screen) / sizeof(char) - 1] = 0;\n}\n"
         },
         {
           "objID": "cbe7cde1-8920-476a-b2a2-1761ae7451b0",
@@ -1414,8 +1414,8 @@
                       "type": "LVGLLabelWidget",
                       "left": 0,
                       "top": 0,
-                      "width": 74,
-                      "height": 21,
+                      "width": 60,
+                      "height": 19,
                       "customInputs": [],
                       "customOutputs": [],
                       "style": {
@@ -1446,8 +1446,7 @@
                           "MAIN": {
                             "DEFAULT": {
                               "pad_bottom": 2,
-                              "pad_top": -1,
-                              "text_font": "FontBook20"
+                              "pad_top": 0
                             }
                           }
                         }

internal/native/eez/src/ui/screens.c

@@ -370,8 +370,7 @@ void create_screen_home_screen() {
                             lv_obj_clear_flag(obj, LV_OBJ_FLAG_CLICK_FOCUSABLE|LV_OBJ_FLAG_PRESS_LOCK|LV_OBJ_FLAG_SCROLLABLE|LV_OBJ_FLAG_SCROLL_CHAIN_HOR|LV_OBJ_FLAG_SCROLL_CHAIN_VER|LV_OBJ_FLAG_SCROLL_ELASTIC|LV_OBJ_FLAG_SCROLL_MOMENTUM|LV_OBJ_FLAG_SCROLL_WITH_ARROW|LV_OBJ_FLAG_SNAPPABLE);
                             add_style_label_font16(obj);
                             lv_obj_set_style_pad_bottom(obj, 2, LV_PART_MAIN | LV_STATE_DEFAULT);
-                            lv_obj_set_style_pad_top(obj, -1, LV_PART_MAIN | LV_STATE_DEFAULT);
-                            lv_obj_set_style_text_font(obj, &ui_font_font_book20, LV_PART_MAIN | LV_STATE_DEFAULT);
+                            lv_obj_set_style_pad_top(obj, 0, LV_PART_MAIN | LV_STATE_DEFAULT);
                             lv_label_set_text(obj, "");
                         }
                     }

internal/native/eez/src/ui/vars.c

@@ -8,8 +8,8 @@ char system_version[100] = { 0 };
 char lvgl_version[32] = { 0 };
 char main_screen[32] = "home_screen";
 char mac_address[18] = { 0 };
-char ip_v4_address[22] = { 0 };
-char ip_v6_address[46] = { 0 };
+char ip_v4_address[22] = "--";
+char ip_v6_address[46] = "--";
 char hostname[262] = { 0 };
 
 const char *get_var_ip_v4_address() {