rg_gui: Added rg_gui_error (rel #241)

Once properly tested this will replace RG_PANIC in many instances.

Author: ducalex

components/retro-go/rg_gui.c

@@ -1039,6 +1039,29 @@ void rg_gui_alert(const char *title, const char *message)
     rg_gui_dialog(title, message ? options : options + 1, -1);
 }
 
+void rg_gui_error(const char *message, const char *object, int _errno, bool exit_program)
+{
+    const char *title = exit_program ? _("Fatal Error") : _("Error");
+    const char *button = exit_program ? _("Exit") : _("OK");
+    char error_msg[128] = "";
+
+    const rg_gui_option_t options[] = {
+        {0, message,  NULL,           RG_DIALOG_FLAG_NORMAL,                                   NULL},
+        {0, _("Obj"), (char *)object, object ? RG_DIALOG_FLAG_MESSAGE : RG_DIALOG_FLAG_HIDDEN, NULL},
+        {0, _("Err"), error_msg,      _errno ? RG_DIALOG_FLAG_MESSAGE : RG_DIALOG_FLAG_HIDDEN, NULL},
+        {0, "",       NULL,           RG_DIALOG_FLAG_MESSAGE,                                  NULL},
+        {1, button,   NULL,           RG_DIALOG_FLAG_NORMAL,                                   NULL},
+        RG_DIALOG_END,
+    };
+
+    esp_err_to_name_r(_errno, error_msg, sizeof(error_msg));
+
+    // FIXME: show blue backdrop color and hide bars?
+    rg_gui_dialog(title, options, -1);
+    if (exit_program)
+        rg_system_exit();
+}
+
 typedef struct
 {
     rg_gui_option_t *options;

components/retro-go/rg_gui.h

@@ -133,6 +133,7 @@ void rg_gui_draw_input_screen(const char *title, const char *message, const char
 intptr_t rg_gui_dialog(const char *title, const rg_gui_option_t *options, int selected_index);
 bool rg_gui_confirm(const char *title, const char *message, bool default_yes);
 void rg_gui_alert(const char *title, const char *message);
+void rg_gui_error(const char *message, const char *object, int _errno, bool exit_program); // , bool allow_retry
 char *rg_gui_file_picker(const char *title, const char *path, bool (*validator)(const char *path), bool browse_tree, bool none_option);
 char *rg_gui_input_str(const char *title, const char *message, const char *default_value);
 int rg_gui_input_char(const rg_keyboard_layout_t *map);