Added additional functions to RichTextLabel:

* Added set_text function to RichTextLabel
* Added percent_visible attributes and functions to RichTextLabel
This should make switching from Label to RichTextLabel easier.

(cherry picked from commit d649140b9b11306c590c17169fd78dc591a7107d)

scene/gui/rich_text_label.cpp

@@ -1829,12 +1829,37 @@ String RichTextLabel::get_text() {
 	return text;
 }
 
+void RichTextLabel::set_text(const String &p_string) {
+	clear();
+	add_text(p_string);
+}
+
+void RichTextLabel::set_percent_visible(float p_percent) {
+
+	if (p_percent < 0 || p_percent >= 1) {
+
+		visible_characters = -1;
+		percent_visible = 1;
+
+	} else {
+
+		visible_characters = get_total_character_count() * p_percent;
+		percent_visible = p_percent;
+	}
+	update();
+}
+
+float RichTextLabel::get_percent_visible() const {
+	return percent_visible;
+}
+
 void RichTextLabel::_bind_methods() {
 
 	ObjectTypeDB::bind_method(_MD("_input_event"), &RichTextLabel::_input_event);
 	ObjectTypeDB::bind_method(_MD("_scroll_changed"), &RichTextLabel::_scroll_changed);
 	ObjectTypeDB::bind_method(_MD("get_text"), &RichTextLabel::get_text);
 	ObjectTypeDB::bind_method(_MD("add_text", "text"), &RichTextLabel::add_text);
+	ObjectTypeDB::bind_method(_MD("set_text", "text"), &RichTextLabel::set_text);
 	ObjectTypeDB::bind_method(_MD("add_image", "image:Texture"), &RichTextLabel::add_image);
 	ObjectTypeDB::bind_method(_MD("newline"), &RichTextLabel::add_newline);
 	ObjectTypeDB::bind_method(_MD("remove_line"), &RichTextLabel::remove_line);
@@ -1880,6 +1905,9 @@ void RichTextLabel::_bind_methods() {
 	ObjectTypeDB::bind_method(_MD("set_visible_characters", "amount"), &RichTextLabel::set_visible_characters);
 	ObjectTypeDB::bind_method(_MD("get_visible_characters"), &RichTextLabel::get_visible_characters);
 
+	ObjectTypeDB::bind_method(_MD("set_percent_visible", "percent_visible"), &RichTextLabel::set_percent_visible);
+	ObjectTypeDB::bind_method(_MD("get_percent_visible"), &RichTextLabel::get_percent_visible);
+
 	ObjectTypeDB::bind_method(_MD("get_total_character_count"), &RichTextLabel::get_total_character_count);
 
 	ObjectTypeDB::bind_method(_MD("set_use_bbcode", "enable"), &RichTextLabel::set_use_bbcode);
@@ -1887,7 +1915,9 @@ void RichTextLabel::_bind_methods() {
 
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "bbcode/enabled"), _SCS("set_use_bbcode"), _SCS("is_using_bbcode"));
 	ADD_PROPERTY(PropertyInfo(Variant::STRING, "bbcode/bbcode", PROPERTY_HINT_MULTILINE_TEXT), _SCS("set_bbcode"), _SCS("get_bbcode"));
+
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "visible_characters", PROPERTY_HINT_RANGE, "-1,128000,1"), _SCS("set_visible_characters"), _SCS("get_visible_characters"));
+	ADD_PROPERTY(PropertyInfo(Variant::REAL, "percent_visible", PROPERTY_HINT_RANGE, "0,1,0.001"), _SCS("set_percent_visible"), _SCS("get_percent_visible"));
 
 	ADD_SIGNAL(MethodInfo("meta_clicked", PropertyInfo(Variant::NIL, "meta")));
 
@@ -1920,7 +1950,6 @@ void RichTextLabel::set_visible_characters(int p_visible) {
 }
 
 int RichTextLabel::get_visible_characters() const {
-
 	return visible_characters;
 }
 int RichTextLabel::get_total_character_count() const {
@@ -1970,9 +1999,9 @@ RichTextLabel::RichTextLabel() {
 	selection.enabled = false;
 
 	visible_characters = -1;
+	percent_visible = 1;
 }
 
 RichTextLabel::~RichTextLabel() {
-
 	memdelete(main);
 }

scene/gui/rich_text_label.h

@@ -258,6 +258,7 @@ private:
 	Selection selection;
 
 	int visible_characters;
+	float percent_visible;
 
 	void _process_line(ItemFrame *p_frame, const Vector2 &p_ofs, int &y, int p_width, int p_line, ProcessMode p_mode, const Ref<Font> &p_base_font, const Color &p_base_color, const Point2i &p_click_pos = Point2i(), Item **r_click_item = NULL, int *r_click_char = NULL, bool *r_outside = NULL, int p_char_count = 0);
 	void _find_click(ItemFrame *p_frame, const Point2i &p_click, Item **r_click_item = NULL, int *r_click_char = NULL, bool *r_outside = NULL);
@@ -340,10 +341,15 @@ public:
 	void set_bbcode(const String &p_bbcode);
 	String get_bbcode() const;
 
+	void set_text(const String &p_string);
+
 	void set_visible_characters(int p_visible);
 	int get_visible_characters() const;
 	int get_total_character_count() const;
 
+	void set_percent_visible(float p_percent);
+	float get_percent_visible() const;
+
 	RichTextLabel();
 	~RichTextLabel();
 };