Allow tooltips to set and show true value

Add a new variable in shared to store the true value. When update the
range, use true value instead of (snapped) value to ensure that small
floating point entered in the inspector will be recorded. When setting
new value, compare it with true value instead.
`EditorSpinSlider::get_tooltip` will return true value.

editor/editor_properties_vector.cpp

@@ -64,7 +64,7 @@ void EditorPropertyVectorN::_value_changed(double val, const String &p_name) {
 				continue;
 			}
 
-			spin_sliders[slider_idx]->set_value_no_signal(spin_sliders[changed_component]->get_value() * ratio[ratio_idx]);
+			spin_sliders[slider_idx]->set_value_no_signal(spin_sliders[changed_component]->get_true_value() * ratio[ratio_idx]);
 		}
 	}
 
@@ -74,9 +74,9 @@ void EditorPropertyVectorN::_value_changed(double val, const String &p_name) {
 
 	for (int i = 0; i < component_count; i++) {
 		if (radians_as_degrees) {
-			v.set(i, Math::deg_to_rad(spin_sliders[i]->get_value()));
+			v.set(i, Math::deg_to_rad(spin_sliders[i]->get_true_value()));
 		} else {
-			v.set(i, spin_sliders[i]->get_value());
+			v.set(i, spin_sliders[i]->get_true_value());
 		}
 	}
 	emit_changed(get_edited_property(), v, linked->is_pressed() ? "" : p_name);

editor/gui/editor_spin_slider.cpp

@@ -44,9 +44,9 @@ bool EditorSpinSlider::is_text_field() const {
 String EditorSpinSlider::get_tooltip(const Point2 &p_pos) const {
 	if (!read_only && grabber->is_visible()) {
 		Key key = (OS::get_singleton()->has_feature("macos") || OS::get_singleton()->has_feature("web_macos") || OS::get_singleton()->has_feature("web_ios")) ? Key::META : Key::CTRL;
-		return TS->format_number(rtos(get_value())) + "\n\n" + vformat(TTR("Hold %s to round to integers.\nHold Shift for more precise changes."), find_keycode_name(key));
+		return TS->format_number(rtos(get_true_value())) + "\n\n" + vformat(TTR("Hold %s to round to integers.\nHold Shift for more precise changes."), find_keycode_name(key));
 	}
-	return TS->format_number(rtos(get_value()));
+	return TS->format_number(rtos(get_true_value()));
 }
 
 String EditorSpinSlider::get_text_value() const {

scene/gui/range.cpp

@@ -44,8 +44,13 @@ void Range::_value_changed(double p_value) {
 	GDVIRTUAL_CALL(_value_changed, p_value);
 }
 void Range::_value_changed_notify() {
+	if (Engine::get_singleton()->is_editor_hint()) {
+		_value_changed(shared->true_val);
+		emit_signal(SceneStringName(value_changed), shared->true_val);
+	} else {
 		_value_changed(shared->val);
 		emit_signal(SceneStringName(value_changed), shared->val);
+	}
 	queue_redraw();
 }
 
@@ -85,10 +90,12 @@ void Range::Shared::redraw_owners() {
 }
 
 void Range::set_value(double p_val) {
-	double prev_val = shared->val;
+	double prev_val = Engine::get_singleton()->is_editor_hint() ? shared->true_val : shared->val;
 	_set_value_no_signal(p_val);
 
-	if (shared->val != prev_val) {
+	if (Engine::get_singleton()->is_editor_hint() && shared->true_val != prev_val) {
+		shared->emit_value_changed();
+	} else if (!Engine::get_singleton()->is_editor_hint() && shared->val != prev_val) {
 		shared->emit_value_changed();
 	}
 }
@@ -98,6 +105,8 @@ void Range::_set_value_no_signal(double p_val) {
 		return;
 	}
 
+	shared->true_val = p_val;
+
 	if (shared->step > 0) {
 		p_val = Math::round((p_val - shared->min) / shared->step) * shared->step + shared->min;
 	}
@@ -138,7 +147,7 @@ void Range::set_min(double p_min) {
 	shared->min = p_min;
 	shared->max = MAX(shared->max, shared->min);
 	shared->page = CLAMP(shared->page, 0, shared->max - shared->min);
-	set_value(shared->val);
+	set_value(shared->true_val);
 
 	shared->emit_changed("min");
 
@@ -153,7 +162,7 @@ void Range::set_max(double p_max) {
 
 	shared->max = max_validated;
 	shared->page = CLAMP(shared->page, 0, shared->max - shared->min);
-	set_value(shared->val);
+	set_value(shared->true_val);
 
 	shared->emit_changed("max");
 }
@@ -174,7 +183,7 @@ void Range::set_page(double p_page) {
 	}
 
 	shared->page = page_validated;
-	set_value(shared->val);
+	set_value(shared->true_val);
 
 	shared->emit_changed("page");
 }
@@ -183,6 +192,10 @@ double Range::get_value() const {
 	return shared->val;
 }
 
+double Range::get_true_value() const {
+	return shared->true_val;
+}
+
 double Range::get_min() const {
 	return shared->min;
 }
@@ -257,6 +270,7 @@ void Range::unshare() {
 	nshared->min = shared->min;
 	nshared->max = shared->max;
 	nshared->val = shared->val;
+	nshared->true_val = shared->true_val;
 	nshared->step = shared->step;
 	nshared->page = shared->page;
 	nshared->exp_ratio = shared->exp_ratio;

scene/gui/range.h

@@ -38,6 +38,7 @@ class Range : public Control {
 
 	struct Shared {
 		double val = 0.0;
+		double true_val = 0.0;
 		double min = 0.0;
 		double max = 100.0;
 		double step = 1.0;
@@ -82,6 +83,7 @@ public:
 	void set_as_ratio(double p_value);
 
 	double get_value() const;
+	double get_true_value() const;
 	double get_min() const;
 	double get_max() const;
 	double get_step() const;