Expose RichTextLabel selection to script

Expose existing get_selection_text and add methods to get the current
selection index from and index to.

3 files changed, 56 insertions, 9 deletions

diff --git a/doc/classes/RichTextLabel.xml b/doc/classes/RichTextLabel.xml
index fd32e86d7e..7ca70f5a7a 100644
--- a/doc/classes/RichTextLabel.xml
+++ b/doc/classes/RichTextLabel.xml
@@ -80,6 +80,27 @@
 				Returns the total number of paragraphs (newlines or [code]p[/code] tags in the tag stack's text tags). Considers wrapped text as one paragraph.
 			</description>
 		</method>
+		<method name="get_selected_text" qualifiers="const">
+			<return type="String">
+			</return>
+			<description>
+				Returns the current selection text. Does not include BBCodes.
+			</description>
+		</method>
+		<method name="get_selection_from" qualifiers="const">
+			<return type="int">
+			</return>
+			<description>
+				Returns the current selection first character index if a selection is active, [code]-1[/code] otherwise. Does not include BBCodes.
+			</description>
+		</method>
+		<method name="get_selection_to" qualifiers="const">
+			<return type="int">
+			</return>
+			<description>
+				Returns the current selection last character index if a selection is active, [code]-1[/code] otherwise. Does not include BBCodes.
+			</description>
+		</method>
 		<method name="get_total_character_count" qualifiers="const">
 			<return type="int">
 			</return>
diff --git a/scene/gui/rich_text_label.cpp b/scene/gui/rich_text_label.cpp
index 992e272186..6a1cc291a6 100644
--- a/scene/gui/rich_text_label.cpp
+++ b/scene/gui/rich_text_label.cpp
@@ -45,7 +45,7 @@
 #include "editor/editor_scale.h"
 #endif
 
-RichTextLabel::Item *RichTextLabel::_get_next_item(Item *p_item, bool p_free) {
+RichTextLabel::Item *RichTextLabel::_get_next_item(Item *p_item, bool p_free) const {
 	if (p_free) {
 		if (p_item->subitems.size()) {
 			return p_item->subitems.front()->get();
@@ -90,7 +90,7 @@ RichTextLabel::Item *RichTextLabel::_get_next_item(Item *p_item, bool p_free) {
 	return nullptr;
 }
 
-RichTextLabel::Item *RichTextLabel::_get_prev_item(Item *p_item, bool p_free) {
+RichTextLabel::Item *RichTextLabel::_get_prev_item(Item *p_item, bool p_free) const {
 	if (p_free) {
 		if (p_item->subitems.size()) {
 			return p_item->subitems.back()->get();
@@ -147,7 +147,7 @@ RichTextLabel::Item *RichTextLabel::_get_item_at_pos(RichTextLabel::Item *p_item
 			case ITEM_TEXT: {
 				ItemText *t = (ItemText *)it;
 				offset += t->text.length();
-				if (offset > p_position) {
+				if (offset >= p_position) {
 					return it;
 				}
 			} break;
@@ -454,6 +454,7 @@ void RichTextLabel::_shape_line(ItemFrame *p_frame, int p_line, const Ref<Font>
 				ItemImage *img = (ItemImage *)it;
 				l.text_buf->add_object((uint64_t)it, img->image->get_size(), img->inline_align, 1);
 				text += String::chr(0xfffc);
+				l.char_count += 1;
 			} break;
 			case ITEM_TABLE: {
 				ItemTable *table = static_cast<ItemTable *>(it);
@@ -3523,7 +3524,7 @@ bool RichTextLabel::search(const String &p_string, bool p_from_selection, bool p
 	return false;
 }
 
-String RichTextLabel::_get_line_text(ItemFrame *p_frame, int p_line, Selection p_selection) {
+String RichTextLabel::_get_line_text(ItemFrame *p_frame, int p_line, Selection p_selection) const {
 	String text;
 	ERR_FAIL_COND_V(p_frame == nullptr, text);
 	ERR_FAIL_COND_V(p_line < 0 || p_line >= p_frame->lines.size(), text);
@@ -3590,7 +3591,7 @@ String RichTextLabel::_get_line_text(ItemFrame *p_frame, int p_line, Selection p
 	return text;
 }
 
-String RichTextLabel::get_selected_text() {
+String RichTextLabel::get_selected_text() const {
 	if (!selection.active || !selection.enabled) {
 		return "";
 	}
@@ -3614,6 +3615,22 @@ bool RichTextLabel::is_selection_enabled() const {
 	return selection.enabled;
 }
 
+int RichTextLabel::get_selection_from() const {
+	if (!selection.active || !selection.enabled) {
+		return -1;
+	}
+
+	return selection.from_frame->lines[selection.from_line].char_offset + selection.from_char;
+}
+
+int RichTextLabel::get_selection_to() const {
+	if (!selection.active || !selection.enabled) {
+		return -1;
+	}
+
+	return selection.to_frame->lines[selection.to_line].char_offset + selection.to_char - 1;
+}
+
 void RichTextLabel::set_bbcode(const String &p_bbcode) {
 	bbcode = p_bbcode;
 	if (is_inside_tree() && use_bbcode) {
@@ -3649,6 +3666,8 @@ String RichTextLabel::get_text() {
 			text += t->text;
 		} else if (it->type == ITEM_NEWLINE) {
 			text += "\n";
+		} else if (it->type == ITEM_IMAGE) {
+			text += " ";
 		} else if (it->type == ITEM_INDENT || it->type == ITEM_LIST) {
 			text += "\t";
 		}
@@ -3841,6 +3860,11 @@ void RichTextLabel::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_selection_enabled", "enabled"), &RichTextLabel::set_selection_enabled);
 	ClassDB::bind_method(D_METHOD("is_selection_enabled"), &RichTextLabel::is_selection_enabled);
 
+	ClassDB::bind_method(D_METHOD("get_selection_from"), &RichTextLabel::get_selection_from);
+	ClassDB::bind_method(D_METHOD("get_selection_to"), &RichTextLabel::get_selection_to);
+
+	ClassDB::bind_method(D_METHOD("get_selected_text"), &RichTextLabel::get_selected_text);
+
 	ClassDB::bind_method(D_METHOD("parse_bbcode", "bbcode"), &RichTextLabel::parse_bbcode);
 	ClassDB::bind_method(D_METHOD("append_bbcode", "bbcode"), &RichTextLabel::append_bbcode);
 
diff --git a/scene/gui/rich_text_label.h b/scene/gui/rich_text_label.h
index e89011e9f5..2351aff0a4 100644
--- a/scene/gui/rich_text_label.h
+++ b/scene/gui/rich_text_label.h
@@ -389,7 +389,7 @@ private:
 
 	void _find_click(ItemFrame *p_frame, const Point2i &p_click, ItemFrame **r_click_frame = nullptr, int *r_click_line = nullptr, Item **r_click_item = nullptr, int *r_click_char = nullptr, bool *r_outside = nullptr);
 
-	String _get_line_text(ItemFrame *p_frame, int p_line, Selection p_sel);
+	String _get_line_text(ItemFrame *p_frame, int p_line, Selection p_sel) const;
 	bool _search_line(ItemFrame *p_frame, int p_line, const String &p_string, Item *p_from, Item *p_to);
 
 	void _shape_line(ItemFrame *p_frame, int p_line, const Ref<Font> &p_base_font, int p_base_font_size, int p_width, int *r_char_offset);
@@ -427,8 +427,8 @@ private:
 	void _scroll_changed(double);
 
 	void _gui_input(Ref<InputEvent> p_event);
-	Item *_get_next_item(Item *p_item, bool p_free = false);
-	Item *_get_prev_item(Item *p_item, bool p_free = false);
+	Item *_get_next_item(Item *p_item, bool p_free = false) const;
+	Item *_get_prev_item(Item *p_item, bool p_free = false) const;
 
 	Rect2 _get_text_rect();
 	Ref<RichTextEffect> _get_custom_effect_by_code(String p_bbcode_identifier);
@@ -524,7 +524,9 @@ public:
 
 	void set_selection_enabled(bool p_enabled);
 	bool is_selection_enabled() const;
-	String get_selected_text();
+	int get_selection_from() const;
+	int get_selection_to() const;
+	String get_selected_text() const;
 	void selection_copy();
 
 	Error parse_bbcode(const String &p_bbcode);