Inspector: Make default float step configurable

Also allow lifting the decimal step formatting with a hint range step
of 0. A new `range_step_decimals()` is added for this to avoid breaking
compatibility on the general purpose `step_decimals()` (which still
returns 0 for an input step of 0).

Supersedes #25470.
Partial fix for #18251.

3 files changed, 16 insertions, 12 deletions

diff --git a/editor/editor_node.cpp b/editor/editor_node.cpp
index f1944bf63f..5705629c56 100644
--- a/editor/editor_node.cpp
+++ b/editor/editor_node.cpp
@@ -5557,6 +5557,8 @@ EditorNode::EditorNode() {
 	EDITOR_DEF_RST("interface/scene_tabs/restore_scenes_on_load", false);
 	EDITOR_DEF_RST("interface/scene_tabs/show_thumbnail_on_hover", true);
 	EDITOR_DEF_RST("interface/inspector/capitalize_properties", true);
+	EDITOR_DEF_RST("interface/inspector/default_float_step", 0.001);
+	EditorSettings::get_singleton()->add_property_hint(PropertyInfo(Variant::REAL, "interface/inspector/default_float_step", PROPERTY_HINT_EXP_RANGE, "0,1,0"));
 	EDITOR_DEF_RST("interface/inspector/disable_folding", false);
 	EDITOR_DEF_RST("interface/inspector/auto_unfold_foreign_scenes", true);
 	EDITOR_DEF("interface/inspector/horizontal_vector2_editing", false);
diff --git a/editor/editor_properties.cpp b/editor/editor_properties.cpp
index d54f72382c..3300228921 100644
--- a/editor/editor_properties.cpp
+++ b/editor/editor_properties.cpp
@@ -2904,6 +2904,8 @@ void EditorInspectorDefaultPlugin::parse_begin(Object *p_object) {
 
 bool EditorInspectorDefaultPlugin::parse_property(Object *p_object, Variant::Type p_type, const String &p_path, PropertyHint p_hint, const String &p_hint_text, int p_usage) {
 
+	float default_float_step = EDITOR_GET("interface/inspector/default_float_step");
+
 	switch (p_type) {
 
 		// atomic types
@@ -3010,7 +3012,7 @@ bool EditorInspectorDefaultPlugin::parse_property(Object *p_object, Variant::Typ
 
 			} else {
 				EditorPropertyFloat *editor = memnew(EditorPropertyFloat);
-				double min = -65535, max = 65535, step = 0.001;
+				double min = -65535, max = 65535, step = default_float_step;
 				bool hide_slider = true;
 				bool exp_range = false;
 				bool greater = true, lesser = true;
@@ -3107,7 +3109,7 @@ bool EditorInspectorDefaultPlugin::parse_property(Object *p_object, Variant::Typ
 
 		case Variant::VECTOR2: {
 			EditorPropertyVector2 *editor = memnew(EditorPropertyVector2);
-			double min = -65535, max = 65535, step = 0.001;
+			double min = -65535, max = 65535, step = default_float_step;
 			bool hide_slider = true;
 
 			if (p_hint == PROPERTY_HINT_RANGE && p_hint_text.get_slice_count(",") >= 2) {
@@ -3125,7 +3127,7 @@ bool EditorInspectorDefaultPlugin::parse_property(Object *p_object, Variant::Typ
 		} break; // 5
 		case Variant::RECT2: {
 			EditorPropertyRect2 *editor = memnew(EditorPropertyRect2);
-			double min = -65535, max = 65535, step = 0.001;
+			double min = -65535, max = 65535, step = default_float_step;
 			bool hide_slider = true;
 
 			if (p_hint == PROPERTY_HINT_RANGE && p_hint_text.get_slice_count(",") >= 2) {
@@ -3142,7 +3144,7 @@ bool EditorInspectorDefaultPlugin::parse_property(Object *p_object, Variant::Typ
 		} break;
 		case Variant::VECTOR3: {
 			EditorPropertyVector3 *editor = memnew(EditorPropertyVector3);
-			double min = -65535, max = 65535, step = 0.001;
+			double min = -65535, max = 65535, step = default_float_step;
 			bool hide_slider = true;
 
 			if (p_hint == PROPERTY_HINT_RANGE && p_hint_text.get_slice_count(",") >= 2) {
@@ -3160,7 +3162,7 @@ bool EditorInspectorDefaultPlugin::parse_property(Object *p_object, Variant::Typ
 		} break;
 		case Variant::TRANSFORM2D: {
 			EditorPropertyTransform2D *editor = memnew(EditorPropertyTransform2D);
-			double min = -65535, max = 65535, step = 0.001;
+			double min = -65535, max = 65535, step = default_float_step;
 			bool hide_slider = true;
 
 			if (p_hint == PROPERTY_HINT_RANGE && p_hint_text.get_slice_count(",") >= 2) {
@@ -3178,7 +3180,7 @@ bool EditorInspectorDefaultPlugin::parse_property(Object *p_object, Variant::Typ
 		} break;
 		case Variant::PLANE: {
 			EditorPropertyPlane *editor = memnew(EditorPropertyPlane);
-			double min = -65535, max = 65535, step = 0.001;
+			double min = -65535, max = 65535, step = default_float_step;
 			bool hide_slider = true;
 
 			if (p_hint == PROPERTY_HINT_RANGE && p_hint_text.get_slice_count(",") >= 2) {
@@ -3195,7 +3197,7 @@ bool EditorInspectorDefaultPlugin::parse_property(Object *p_object, Variant::Typ
 		} break;
 		case Variant::QUAT: {
 			EditorPropertyQuat *editor = memnew(EditorPropertyQuat);
-			double min = -65535, max = 65535, step = 0.001;
+			double min = -65535, max = 65535, step = default_float_step;
 			bool hide_slider = true;
 
 			if (p_hint == PROPERTY_HINT_RANGE && p_hint_text.get_slice_count(",") >= 2) {
@@ -3212,7 +3214,7 @@ bool EditorInspectorDefaultPlugin::parse_property(Object *p_object, Variant::Typ
 		} break; // 10
 		case Variant::AABB: {
 			EditorPropertyAABB *editor = memnew(EditorPropertyAABB);
-			double min = -65535, max = 65535, step = 0.001;
+			double min = -65535, max = 65535, step = default_float_step;
 			bool hide_slider = true;
 
 			if (p_hint == PROPERTY_HINT_RANGE && p_hint_text.get_slice_count(",") >= 2) {
@@ -3229,7 +3231,7 @@ bool EditorInspectorDefaultPlugin::parse_property(Object *p_object, Variant::Typ
 		} break;
 		case Variant::BASIS: {
 			EditorPropertyBasis *editor = memnew(EditorPropertyBasis);
-			double min = -65535, max = 65535, step = 0.001;
+			double min = -65535, max = 65535, step = default_float_step;
 			bool hide_slider = true;
 
 			if (p_hint == PROPERTY_HINT_RANGE && p_hint_text.get_slice_count(",") >= 2) {
@@ -3246,7 +3248,7 @@ bool EditorInspectorDefaultPlugin::parse_property(Object *p_object, Variant::Typ
 		} break;
 		case Variant::TRANSFORM: {
 			EditorPropertyTransform *editor = memnew(EditorPropertyTransform);
-			double min = -65535, max = 65535, step = 0.001;
+			double min = -65535, max = 65535, step = default_float_step;
 			bool hide_slider = true;
 
 			if (p_hint == PROPERTY_HINT_RANGE && p_hint_text.get_slice_count(",") >= 2) {
diff --git a/editor/editor_spin_slider.cpp b/editor/editor_spin_slider.cpp
index dcb106899e..9966394025 100644
--- a/editor/editor_spin_slider.cpp
+++ b/editor/editor_spin_slider.cpp
@@ -38,9 +38,9 @@ String EditorSpinSlider::get_tooltip(const Point2 &p_pos) const {
 }
 
 String EditorSpinSlider::get_text_value() const {
-	int zeros = Math::step_decimals(get_step());
-	return String::num(get_value(), zeros);
+	return String::num(get_value(), Math::range_step_decimals(get_step()));
 }
+
 void EditorSpinSlider::_gui_input(const Ref<InputEvent> &p_event) {
 
 	if (read_only)