From 24c6c097f360c4bdaf20e9057177995c76784f6c Mon Sep 17 00:00:00 2001
From: Paulb23 <p_batty@hotmail.co.uk>
Date: Tue, 22 Aug 2017 20:02:08 +0100
Subject: Stops scrolling when the user issues another command

---
 scene/gui/scroll_bar.cpp |  9 +++++++--
 scene/gui/text_edit.cpp  | 13 +++++++++++++
 scene/gui/text_edit.h    |  1 +
 3 files changed, 21 insertions(+), 2 deletions(-)

(limited to 'scene/gui')

diff --git a/scene/gui/scroll_bar.cpp b/scene/gui/scroll_bar.cpp
index 6519cde6d3..4242ee4523 100644
--- a/scene/gui/scroll_bar.cpp
+++ b/scene/gui/scroll_bar.cpp
@@ -40,6 +40,11 @@ void ScrollBar::set_can_focus_by_default(bool p_can_focus) {
 
 void ScrollBar::_gui_input(Ref<InputEvent> p_event) {
 
+	Ref<InputEventMouseMotion> m = p_event;
+	if (!m.is_valid() || drag.active) {
+		emit_signal("scrolling");
+	}
+
 	Ref<InputEventMouseButton> b = p_event;
 
 	if (b.is_valid()) {
@@ -143,8 +148,6 @@ void ScrollBar::_gui_input(Ref<InputEvent> p_event) {
 		}
 	}
 
-	Ref<InputEventMouseMotion> m = p_event;
-
 	if (m.is_valid()) {
 
 		accept_event();
@@ -823,6 +826,8 @@ void ScrollBar::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("_drag_slave_input"), &ScrollBar::_drag_slave_input);
 	ClassDB::bind_method(D_METHOD("_drag_slave_exit"), &ScrollBar::_drag_slave_exit);
 
+	ADD_SIGNAL(MethodInfo("scrolling"));
+
 	ADD_PROPERTY(PropertyInfo(Variant::REAL, "custom_step", PROPERTY_HINT_RANGE, "-1,4096"), "set_custom_step", "get_custom_step");
 }
 
diff --git a/scene/gui/text_edit.cpp b/scene/gui/text_edit.cpp
index f15fb71f87..cba4876a53 100644
--- a/scene/gui/text_edit.cpp
+++ b/scene/gui/text_edit.cpp
@@ -2880,6 +2880,8 @@ void TextEdit::_post_shift_selection() {
 }
 
 void TextEdit::_scroll_lines_up() {
+	scrolling = false;
+
 	// adjust the vertical scroll
 	if (get_v_scroll() > 0) {
 		set_v_scroll(get_v_scroll() - 1);
@@ -2892,6 +2894,8 @@ void TextEdit::_scroll_lines_up() {
 }
 
 void TextEdit::_scroll_lines_down() {
+	scrolling = false;
+
 	// calculate the maximum vertical scroll position
 	int max_v_scroll = get_line_count() - 1;
 	if (!scroll_past_end_of_file_enabled) {
@@ -3156,6 +3160,7 @@ int TextEdit::get_visible_rows() const {
 	return total;
 }
 void TextEdit::adjust_viewport_to_cursor() {
+	scrolling = false;
 
 	if (cursor.line_ofs > cursor.line)
 		cursor.line_ofs = cursor.line;
@@ -3195,6 +3200,7 @@ void TextEdit::adjust_viewport_to_cursor() {
 }
 
 void TextEdit::center_viewport_to_cursor() {
+	scrolling = false;
 
 	if (cursor.line_ofs > cursor.line)
 		cursor.line_ofs = cursor.line;
@@ -3313,6 +3319,10 @@ bool TextEdit::cursor_is_block_mode() const {
 	return block_caret;
 }
 
+void TextEdit::_v_scroll_input() {
+	scrolling = false;
+}
+
 void TextEdit::_scroll_moved(double p_to_val) {
 
 	if (updating_scrolls)
@@ -4709,6 +4719,7 @@ void TextEdit::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("_push_current_op"), &TextEdit::_push_current_op);
 	ClassDB::bind_method(D_METHOD("_click_selection_held"), &TextEdit::_click_selection_held);
 	ClassDB::bind_method(D_METHOD("_toggle_draw_caret"), &TextEdit::_toggle_draw_caret);
+	ClassDB::bind_method(D_METHOD("_v_scroll_input"), &TextEdit::_v_scroll_input);
 
 	BIND_ENUM_CONSTANT(SEARCH_MATCH_CASE);
 	BIND_ENUM_CONSTANT(SEARCH_WHOLE_WORDS);
@@ -4846,6 +4857,8 @@ TextEdit::TextEdit() {
 	h_scroll->connect("value_changed", this, "_scroll_moved");
 	v_scroll->connect("value_changed", this, "_scroll_moved");
 
+	v_scroll->connect("scrolling", this, "_v_scroll_input");
+
 	cursor_changed_dirty = false;
 	text_changed_dirty = false;
 
diff --git a/scene/gui/text_edit.h b/scene/gui/text_edit.h
index 1abfe368dd..6321cad2da 100644
--- a/scene/gui/text_edit.h
+++ b/scene/gui/text_edit.h
@@ -299,6 +299,7 @@ class TextEdit : public Control {
 	void adjust_viewport_to_cursor();
 	void _scroll_moved(double);
 	void _update_scrollbars();
+	void _v_scroll_input();
 	void _click_selection_held();
 
 	void _pre_shift_selection();
-- 
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