Added warning line highlight

doc/classes/EditorSettings.xml

@@ -1498,6 +1498,9 @@
 		<member name="text_editor/theme/highlighting/user_type_color" type="Color" setter="" getter="">
 			The script editor's color for user-defined types (using [code]class_name[/code]).
 		</member>
+		<member name="text_editor/theme/highlighting/warning_color" type="Color" setter="" getter="">
+			The script editor's background color for lines with warnings. This should be set to a translucent color so that it can display on top of other line color modifiers such as [member text_editor/theme/highlighting/current_line_color].
+		</member>
 		<member name="text_editor/theme/highlighting/word_highlighted_color" type="Color" setter="" getter="">
 			The script editor's color for words highlighted by selecting them. Only visible if [member text_editor/appearance/caret/highlight_all_occurrences] is [code]true[/code].
 		</member>

editor/editor_settings.cpp

@@ -1075,6 +1075,7 @@ void EditorSettings::_load_godot2_text_editor_theme() {
 	_initial_set("text_editor/theme/highlighting/function_color", Color(0.4, 0.64, 0.81), true);
 	_initial_set("text_editor/theme/highlighting/member_variable_color", Color(0.9, 0.31, 0.35), true);
 	_initial_set("text_editor/theme/highlighting/mark_color", Color(1.0, 0.4, 0.4, 0.4), true);
+	_initial_set("text_editor/theme/highlighting/warning_color", Color(1.0, 0.8, 0.4, 0.1), true);
 	_initial_set("text_editor/theme/highlighting/bookmark_color", Color(0.08, 0.49, 0.98));
 	_initial_set("text_editor/theme/highlighting/breakpoint_color", Color(0.9, 0.29, 0.3));
 	_initial_set("text_editor/theme/highlighting/executing_line_color", Color(0.98, 0.89, 0.27));

editor/plugins/script_text_editor.cpp

@@ -184,16 +184,22 @@ void ScriptTextEditor::enable_editor(Control *p_shortcut_context) {
 void ScriptTextEditor::_load_theme_settings() {
 	CodeEdit *text_edit = code_editor->get_text_editor();
 
+	Color updated_warning_line_color = EDITOR_GET("text_editor/theme/highlighting/warning_color");
 	Color updated_marked_line_color = EDITOR_GET("text_editor/theme/highlighting/mark_color");
 	Color updated_safe_line_number_color = EDITOR_GET("text_editor/theme/highlighting/safe_line_number_color");
 	Color updated_folded_code_region_color = EDITOR_GET("text_editor/theme/highlighting/folded_code_region_color");
 
-	bool safe_line_number_color_updated = updated_safe_line_number_color != safe_line_number_color;
+	bool warning_line_color_updated = updated_warning_line_color != warning_line_color;
 	bool marked_line_color_updated = updated_marked_line_color != marked_line_color;
+	bool safe_line_number_color_updated = updated_safe_line_number_color != safe_line_number_color;
 	bool folded_code_region_color_updated = updated_folded_code_region_color != folded_code_region_color;
-	if (safe_line_number_color_updated || marked_line_color_updated || folded_code_region_color_updated) {
+	if (safe_line_number_color_updated || warning_line_color_updated || marked_line_color_updated || folded_code_region_color_updated) {
 		safe_line_number_color = updated_safe_line_number_color;
 		for (int i = 0; i < text_edit->get_line_count(); i++) {
+			if (warning_line_color_updated && text_edit->get_line_background_color(i) == warning_line_color) {
+				text_edit->set_line_background_color(i, updated_warning_line_color);
+			}
+
 			if (marked_line_color_updated && text_edit->get_line_background_color(i) == marked_line_color) {
 				text_edit->set_line_background_color(i, updated_marked_line_color);
 			}
@@ -206,6 +212,7 @@ void ScriptTextEditor::_load_theme_settings() {
 				text_edit->set_line_background_color(i, updated_folded_code_region_color);
 			}
 		}
+		warning_line_color = updated_warning_line_color;
 		marked_line_color = updated_marked_line_color;
 		folded_code_region_color = updated_folded_code_region_color;
 	}
@@ -567,8 +574,8 @@ void ScriptTextEditor::_validate_script() {
 		script_is_valid = true;
 	}
 	_update_connected_methods();
-	_update_warnings();
 	_update_errors();
+	_update_warnings();
 
 	emit_signal(SNAME("name_changed"));
 	emit_signal(SNAME("edited_script_changed"));
@@ -637,6 +644,17 @@ void ScriptTextEditor::_update_warnings() {
 		warnings_panel->pop(); // Cell.
 	}
 	warnings_panel->pop(); // Table.
+	if (warning_line_color.a != 0.0) {
+		CodeEdit *te = code_editor->get_text_editor();
+		for (int i = 0; i < te->get_line_count(); i++) {
+			for (const ScriptLanguage::Warning &W : warnings) {
+				if (i >= W.start_line - 1 && i < W.end_line) {
+					te->set_line_background_color(i, warning_line_color);
+					break;
+				}
+			}
+		}
+	}
 }
 
 void ScriptTextEditor::_update_errors() {
@@ -706,7 +724,7 @@ void ScriptTextEditor::_update_errors() {
 		if (errors.is_empty()) {
 			bool is_folded_code_region = te->is_line_code_region_start(i) && te->is_line_folded(i);
 			te->set_line_background_color(i, is_folded_code_region ? folded_code_region_color : Color(0, 0, 0, 0));
-		} else {
+		} else if (marked_line_color.a != 0) {
 			for (const ScriptLanguage::ScriptError &E : errors) {
 				bool error_line = i == E.line - 1;
 				te->set_line_background_color(i, error_line ? marked_line_color : Color(0, 0, 0, 0));
@@ -1807,8 +1825,8 @@ void ScriptTextEditor::_notification(int p_what) {
 				break;
 			}
 			if (is_visible_in_tree()) {
-				_update_warnings();
 				_update_errors();
+				_update_warnings();
 			}
 			[[fallthrough]];
 		case NOTIFICATION_ENTER_TREE: {

editor/plugins/script_text_editor.h

@@ -98,6 +98,7 @@ class ScriptTextEditor : public ScriptEditorBase {
 	Color safe_line_number_color = Color(1, 1, 1);
 
 	Color marked_line_color = Color(1, 1, 1);
+	Color warning_line_color = Color(1, 1, 1);
 	Color folded_code_region_color = Color(1, 1, 1);
 	int previous_line = 0;
 

editor/themes/editor_theme_manager.cpp

@@ -2608,6 +2608,7 @@ void EditorThemeManager::_generate_text_editor_defaults(ThemeConfiguration &p_co
 	const Color function_color =                  p_config.dark_theme ? Color(0.34, 0.7, 1.0) : Color(0, 0.225, 0.9, 1);
 	const Color member_variable_color =           p_config.dark_theme ? Color(0.34, 0.7, 1.0).lerp(p_config.mono_color, 0.6) : Color(0, 0.4, 0.68, 1);
 	const Color mark_color =                      Color(p_config.error_color.r, p_config.error_color.g, p_config.error_color.b, 0.3);
+	const Color warning_color =                   Color(p_config.warning_color.r, p_config.warning_color.g, p_config.warning_color.b, 0.15);
 	const Color bookmark_color =                  Color(0.08, 0.49, 0.98);
 	const Color breakpoint_color =                p_config.dark_theme ? p_config.error_color : Color(1, 0.27, 0.2, 1);
 	const Color executing_line_color =            Color(0.98, 0.89, 0.27);
@@ -2651,6 +2652,7 @@ void EditorThemeManager::_generate_text_editor_defaults(ThemeConfiguration &p_co
 	setting->set_initial_value("text_editor/theme/highlighting/function_color",                  function_color, true);
 	setting->set_initial_value("text_editor/theme/highlighting/member_variable_color",           member_variable_color, true);
 	setting->set_initial_value("text_editor/theme/highlighting/mark_color",                      mark_color, true);
+	setting->set_initial_value("text_editor/theme/highlighting/warning_color",                   warning_color, true);
 	setting->set_initial_value("text_editor/theme/highlighting/bookmark_color",                  bookmark_color, true);
 	setting->set_initial_value("text_editor/theme/highlighting/breakpoint_color",                breakpoint_color, true);
 	setting->set_initial_value("text_editor/theme/highlighting/executing_line_color",            executing_line_color, true);