From baba971c81fee3c87c1b1a8994c42fc1a29e7b76 Mon Sep 17 00:00:00 2001
From: Eric M <itsjusteza@gmail.com>
Date: Mon, 27 Apr 2020 20:24:27 +1000
Subject: [PATCH] Added option for spinbox to update it's value on line edit
 'text_changed' rather than 'text_entered'

---
 doc/classes/SpinBox.xml |  3 +++
 scene/gui/spin_box.cpp  | 31 ++++++++++++++++++++++++++++++-
 scene/gui/spin_box.h    |  6 ++++++
 3 files changed, 39 insertions(+), 1 deletion(-)

diff --git a/doc/classes/SpinBox.xml b/doc/classes/SpinBox.xml
index c86742eb460..33d2b472b50 100644
--- a/doc/classes/SpinBox.xml
+++ b/doc/classes/SpinBox.xml
@@ -55,6 +55,9 @@
 		<member name="suffix" type="String" setter="set_suffix" getter="get_suffix" default="&quot;&quot;">
 			Adds the specified [code]suffix[/code] string after the numerical value of the [SpinBox].
 		</member>
+		<member name="update_on_text_changed" type="bool" setter="set_update_on_text_changed" getter="get_update_on_text_changed" default="false">
+			Sets the value of the [Range] for this [SpinBox] when the [LineEdit] text is [i]changed[/i] instead of [i]submitted[/i]. See [signal LineEdit.text_changed] and [signal LineEdit.text_submitted].
+		</member>
 	</members>
 	<theme_items>
 		<theme_item name="updown" data_type="icon" type="Texture2D">
diff --git a/scene/gui/spin_box.cpp b/scene/gui/spin_box.cpp
index 1074d0d8a04..0aec017649b 100644
--- a/scene/gui/spin_box.cpp
+++ b/scene/gui/spin_box.cpp
@@ -68,6 +68,15 @@ void SpinBox::_text_submitted(const String &p_string) {
 	_value_changed(0);
 }
 
+void SpinBox::_text_changed(const String &p_string) {
+	int cursor_pos = line_edit->get_caret_column();
+
+	_text_submitted(p_string);
+
+	// Line edit 'set_text' method resets the cursor position so we need to undo that.
+	line_edit->set_caret_column(cursor_pos);
+}
+
 LineEdit *SpinBox::get_line_edit() {
 	return line_edit;
 }
@@ -244,6 +253,24 @@ String SpinBox::get_prefix() const {
 	return prefix;
 }
 
+void SpinBox::set_update_on_text_changed(bool p_update) {
+	if (update_on_text_changed == p_update) {
+		return;
+	}
+
+	update_on_text_changed = p_update;
+
+	if (p_update) {
+		line_edit->connect("text_changed", callable_mp(this, &SpinBox::_text_changed), Vector<Variant>(), CONNECT_DEFERRED);
+	} else {
+		line_edit->disconnect("text_changed", callable_mp(this, &SpinBox::_text_changed));
+	}
+}
+
+bool SpinBox::get_update_on_text_changed() const {
+	return update_on_text_changed;
+}
+
 void SpinBox::set_editable(bool p_editable) {
 	line_edit->set_editable(p_editable);
 }
@@ -267,11 +294,14 @@ void SpinBox::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("get_prefix"), &SpinBox::get_prefix);
 	ClassDB::bind_method(D_METHOD("set_editable", "editable"), &SpinBox::set_editable);
 	ClassDB::bind_method(D_METHOD("is_editable"), &SpinBox::is_editable);
+	ClassDB::bind_method(D_METHOD("set_update_on_text_changed"), &SpinBox::set_update_on_text_changed);
+	ClassDB::bind_method(D_METHOD("get_update_on_text_changed"), &SpinBox::get_update_on_text_changed);
 	ClassDB::bind_method(D_METHOD("apply"), &SpinBox::apply);
 	ClassDB::bind_method(D_METHOD("get_line_edit"), &SpinBox::get_line_edit);
 
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "align", PROPERTY_HINT_ENUM, "Left,Center,Right,Fill"), "set_align", "get_align");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "editable"), "set_editable", "is_editable");
+	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "update_on_text_changed"), "set_update_on_text_changed", "get_update_on_text_changed");
 	ADD_PROPERTY(PropertyInfo(Variant::STRING, "prefix"), "set_prefix", "get_prefix");
 	ADD_PROPERTY(PropertyInfo(Variant::STRING, "suffix"), "set_suffix", "get_suffix");
 }
@@ -284,7 +314,6 @@ SpinBox::SpinBox() {
 	line_edit->set_mouse_filter(MOUSE_FILTER_PASS);
 	line_edit->set_align(LineEdit::ALIGN_LEFT);
 
-	//connect("value_changed",this,"_value_changed");
 	line_edit->connect("text_submitted", callable_mp(this, &SpinBox::_text_submitted), Vector<Variant>(), CONNECT_DEFERRED);
 	line_edit->connect("focus_exited", callable_mp(this, &SpinBox::_line_edit_focus_exit), Vector<Variant>(), CONNECT_DEFERRED);
 	line_edit->connect("gui_input", callable_mp(this, &SpinBox::_line_edit_input));
diff --git a/scene/gui/spin_box.h b/scene/gui/spin_box.h
index 9ec3885f1fc..9828b894da9 100644
--- a/scene/gui/spin_box.h
+++ b/scene/gui/spin_box.h
@@ -40,6 +40,7 @@ class SpinBox : public Range {
 
 	LineEdit *line_edit;
 	int last_w = 0;
+	bool update_on_text_changed = false;
 
 	Timer *range_click_timer;
 	void _range_click_timeout();
@@ -47,6 +48,8 @@ class SpinBox : public Range {
 
 	void _text_submitted(const String &p_string);
 	virtual void _value_changed(double) override;
+	void _text_changed(const String &p_string);
+
 	String prefix;
 	String suffix;
 
@@ -88,6 +91,9 @@ public:
 	void set_prefix(const String &p_prefix);
 	String get_prefix() const;
 
+	void set_update_on_text_changed(bool p_update);
+	bool get_update_on_text_changed() const;
+
 	void apply();
 
 	SpinBox();