Fix HScrollBar of TextEdit, closes #2355

scene/gui/text_edit.cpp

@@ -94,9 +94,9 @@ void TextEdit::Text::set_tab_size(int p_tab_size) {
 
 void TextEdit::Text::_update_line_cache(int p_line) const {
 
-	int w =0;
-	int tab_w=font->get_char_size(' ').width;
-	
+	int w = 0;
+	int tab_w=font->get_char_size(' ').width*tab_size;
+
 	int len = text[p_line].data.length();
 	const CharType *str = text[p_line].data.c_str();
 
@@ -292,7 +292,10 @@ void TextEdit::_update_scrollbars() {
 
 	int vscroll_pixels = v_scroll->get_combined_minimum_size().width;
 	int visible_width = size.width - cache.style_normal->get_minimum_size().width;
-	int total_width = text.get_max_width();
+	int total_width = text.get_max_width() + vmin.x;
+
+	if (line_numbers)
+		total_width += cache.line_number_w;
 
 	bool use_hscroll=true;
 	bool use_vscroll=true;
@@ -322,7 +325,6 @@ void TextEdit::_update_scrollbars() {
 		v_scroll->show();
 		v_scroll->set_max(total_rows);
 		v_scroll->set_page(visible_rows);
-
 		v_scroll->set_val(cursor.line_ofs);
 
 	}  else {
@@ -336,6 +338,7 @@ void TextEdit::_update_scrollbars() {
 		h_scroll->set_max(total_width);
 		h_scroll->set_page(visible_width);
 		h_scroll->set_val(cursor.x_ofs);
+
 	} else {
 
 		h_scroll->hide();