Reorganize Region Rect Editor

Problem:

* Region rect was pretty much a hidden editor. Because it was annoying for it to pop up automatically, it did not.
* Because it did not, most users have no idea it even exists.
* But because it is a transient editor, it would steal focus of other editor and annoy users.

Solution:

* Editor has been moved to a window.
* Regions that can be edited add a button below the region which can be pressed to open the editor.

This required a slight change in EditorInspectorPlugin to allow custom editors to be below others.

4 files changed, 134 insertions, 163 deletions

diff --git a/editor/editor_inspector.cpp b/editor/editor_inspector.cpp
index 4bc37456d5..9a400eb2bc 100644
--- a/editor/editor_inspector.cpp
+++ b/editor/editor_inspector.cpp
@@ -1008,12 +1008,11 @@ void EditorInspectorPlugin::add_custom_control(Control *control) {
 	added_editors.push_back(ae);
 }
 
-void EditorInspectorPlugin::add_property_editor(const String &p_for_property, Control *p_prop) {
-	ERR_FAIL_COND(Object::cast_to<EditorProperty>(p_prop) == nullptr);
-
+void EditorInspectorPlugin::add_property_editor(const String &p_for_property, Control *p_prop, bool p_add_to_end) {
 	AddedEditor ae;
 	ae.properties.push_back(p_for_property);
 	ae.property_editor = p_prop;
+	ae.add_to_end = p_add_to_end;
 	added_editors.push_back(ae);
 }
 
@@ -1059,7 +1058,7 @@ void EditorInspectorPlugin::parse_end(Object *p_object) {
 
 void EditorInspectorPlugin::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("add_custom_control", "control"), &EditorInspectorPlugin::add_custom_control);
-	ClassDB::bind_method(D_METHOD("add_property_editor", "property", "editor"), &EditorInspectorPlugin::add_property_editor);
+	ClassDB::bind_method(D_METHOD("add_property_editor", "property", "editor", "add_to_end"), &EditorInspectorPlugin::add_property_editor, DEFVAL(false));
 	ClassDB::bind_method(D_METHOD("add_property_editor_for_multiple_properties", "label", "properties", "editor"), &EditorInspectorPlugin::add_property_editor_for_multiple_properties);
 
 	GDVIRTUAL_BIND(_can_handle, "object")
@@ -2894,87 +2893,99 @@ void EditorInspector::update_tree() {
 			doc_hint = descr;
 		}
 
+		Vector<EditorInspectorPlugin::AddedEditor> editors;
+		Vector<EditorInspectorPlugin::AddedEditor> late_editors;
+
 		// Search for the inspector plugin that will handle the properties. Then add the correct property editor to it.
 		for (Ref<EditorInspectorPlugin> &ped : valid_plugins) {
 			bool exclusive = ped->parse_property(object, p.type, p.name, p.hint, p.hint_string, p.usage, wide_editors);
 
-			List<EditorInspectorPlugin::AddedEditor> editors = ped->added_editors; // Make a copy, since plugins may be used again in a sub-inspector.
+			for (const EditorInspectorPlugin::AddedEditor &F : ped->added_editors) {
+				if (F.add_to_end) {
+					late_editors.push_back(F);
+				} else {
+					editors.push_back(F);
+				}
+			}
+
 			ped->added_editors.clear();
 
-			for (const EditorInspectorPlugin::AddedEditor &F : editors) {
-				EditorProperty *ep = Object::cast_to<EditorProperty>(F.property_editor);
+			if (exclusive) {
+				break;
+			}
+		}
 
-				if (ep) {
-					// Set all this before the control gets the ENTER_TREE notification.
-					ep->object = object;
+		editors.append_array(late_editors);
 
-					if (F.properties.size()) {
-						if (F.properties.size() == 1) {
-							//since it's one, associate:
-							ep->property = F.properties[0];
-							ep->property_path = property_prefix + F.properties[0];
-							ep->property_usage = p.usage;
-							//and set label?
-						}
+		for (int i = 0; i < editors.size(); i++) {
+			EditorProperty *ep = Object::cast_to<EditorProperty>(editors[i].property_editor);
+			const Vector<String> &properties = editors[i].properties;
 
-						if (!F.label.is_empty()) {
-							ep->set_label(F.label);
-						} else {
-							// Use the existing one.
-							ep->set_label(property_label_string);
-						}
-						for (int i = 0; i < F.properties.size(); i++) {
-							String prop = F.properties[i];
+			if (ep) {
+				// Set all this before the control gets the ENTER_TREE notification.
+				ep->object = object;
 
-							if (!editor_property_map.has(prop)) {
-								editor_property_map[prop] = List<EditorProperty *>();
-							}
-							editor_property_map[prop].push_back(ep);
-						}
+				if (properties.size()) {
+					if (properties.size() == 1) {
+						//since it's one, associate:
+						ep->property = properties[0];
+						ep->property_path = property_prefix + properties[0];
+						ep->property_usage = p.usage;
+						//and set label?
 					}
-					ep->set_draw_warning(draw_warning);
-					ep->set_use_folding(use_folding);
-					ep->set_checkable(checkable);
-					ep->set_checked(checked);
-					ep->set_keying(keying);
-					ep->set_read_only(property_read_only);
-					ep->set_deletable(deletable_properties || p.name.begins_with("metadata/"));
-				}
-
-				current_vbox->add_child(F.property_editor);
-
-				if (ep) {
-					// Eventually, set other properties/signals after the property editor got added to the tree.
-					bool update_all = (p.usage & PROPERTY_USAGE_UPDATE_ALL_IF_MODIFIED);
-					ep->connect("property_changed", callable_mp(this, &EditorInspector::_property_changed), varray(update_all));
-					ep->connect("property_keyed", callable_mp(this, &EditorInspector::_property_keyed));
-					ep->connect("property_deleted", callable_mp(this, &EditorInspector::_property_deleted), varray(), CONNECT_DEFERRED);
-					ep->connect("property_keyed_with_value", callable_mp(this, &EditorInspector::_property_keyed_with_value));
-					ep->connect("property_checked", callable_mp(this, &EditorInspector::_property_checked));
-					ep->connect("property_pinned", callable_mp(this, &EditorInspector::_property_pinned));
-					ep->connect("selected", callable_mp(this, &EditorInspector::_property_selected));
-					ep->connect("multiple_properties_changed", callable_mp(this, &EditorInspector::_multiple_properties_changed));
-					ep->connect("resource_selected", callable_mp(this, &EditorInspector::_resource_selected), varray(), CONNECT_DEFERRED);
-					ep->connect("object_id_selected", callable_mp(this, &EditorInspector::_object_id_selected), varray(), CONNECT_DEFERRED);
-					if (!doc_hint.is_empty()) {
-						ep->set_tooltip(property_prefix + p.name + "::" + doc_hint);
+
+					if (!editors[i].label.is_empty()) {
+						ep->set_label(editors[i].label);
 					} else {
-						ep->set_tooltip(property_prefix + p.name);
+						// Use the existing one.
+						ep->set_label(property_label_string);
 					}
-					ep->update_property();
-					ep->_update_pin_flags();
-					ep->update_revert_and_pin_status();
-					ep->update_cache();
+					for (int j = 0; j < properties.size(); j++) {
+						String prop = properties[j];
 
-					if (current_selected && ep->property == current_selected) {
-						ep->select(current_focusable);
+						if (!editor_property_map.has(prop)) {
+							editor_property_map[prop] = List<EditorProperty *>();
+						}
+						editor_property_map[prop].push_back(ep);
 					}
 				}
-			}
+				ep->set_draw_warning(draw_warning);
+				ep->set_use_folding(use_folding);
+				ep->set_checkable(checkable);
+				ep->set_checked(checked);
+				ep->set_keying(keying);
+				ep->set_read_only(property_read_only);
+				ep->set_deletable(deletable_properties || p.name.begins_with("metadata/"));
+			}
+
+			current_vbox->add_child(editors[i].property_editor);
+
+			if (ep) {
+				// Eventually, set other properties/signals after the property editor got added to the tree.
+				bool update_all = (p.usage & PROPERTY_USAGE_UPDATE_ALL_IF_MODIFIED);
+				ep->connect("property_changed", callable_mp(this, &EditorInspector::_property_changed), varray(update_all));
+				ep->connect("property_keyed", callable_mp(this, &EditorInspector::_property_keyed));
+				ep->connect("property_deleted", callable_mp(this, &EditorInspector::_property_deleted), varray(), CONNECT_DEFERRED);
+				ep->connect("property_keyed_with_value", callable_mp(this, &EditorInspector::_property_keyed_with_value));
+				ep->connect("property_checked", callable_mp(this, &EditorInspector::_property_checked));
+				ep->connect("property_pinned", callable_mp(this, &EditorInspector::_property_pinned));
+				ep->connect("selected", callable_mp(this, &EditorInspector::_property_selected));
+				ep->connect("multiple_properties_changed", callable_mp(this, &EditorInspector::_multiple_properties_changed));
+				ep->connect("resource_selected", callable_mp(this, &EditorInspector::_resource_selected), varray(), CONNECT_DEFERRED);
+				ep->connect("object_id_selected", callable_mp(this, &EditorInspector::_object_id_selected), varray(), CONNECT_DEFERRED);
+				if (!doc_hint.is_empty()) {
+					ep->set_tooltip(property_prefix + p.name + "::" + doc_hint);
+				} else {
+					ep->set_tooltip(property_prefix + p.name);
+				}
+				ep->update_property();
+				ep->_update_pin_flags();
+				ep->update_revert_and_pin_status();
+				ep->update_cache();
 
-			if (exclusive) {
-				// If we know the plugin is exclusive, we don't need to go through other plugins.
-				break;
+				if (current_selected && ep->property == current_selected) {
+					ep->select(current_focusable);
+				}
 			}
 		}
 	}
diff --git a/editor/editor_inspector.h b/editor/editor_inspector.h
index 30c0cffe40..2b89fb3f9f 100644
--- a/editor/editor_inspector.h
+++ b/editor/editor_inspector.h
@@ -205,11 +205,13 @@ public:
 class EditorInspectorPlugin : public RefCounted {
 	GDCLASS(EditorInspectorPlugin, RefCounted);
 
+public:
 	friend class EditorInspector;
 	struct AddedEditor {
 		Control *property_editor = nullptr;
 		Vector<String> properties;
 		String label;
+		bool add_to_end = false;
 	};
 
 	List<AddedEditor> added_editors;
@@ -226,7 +228,7 @@ protected:
 
 public:
 	void add_custom_control(Control *control);
-	void add_property_editor(const String &p_for_property, Control *p_prop);
+	void add_property_editor(const String &p_for_property, Control *p_prop, bool p_add_to_end = false);
 	void add_property_editor_for_multiple_properties(const String &p_label, const Vector<String> &p_properties, Control *p_prop);
 
 	virtual bool can_handle(Object *p_object);
diff --git a/editor/plugins/texture_region_editor_plugin.cpp b/editor/plugins/texture_region_editor_plugin.cpp
index 74c96e19d0..2b24ebaebd 100644
--- a/editor/plugins/texture_region_editor_plugin.cpp
+++ b/editor/plugins/texture_region_editor_plugin.cpp
@@ -37,6 +37,7 @@
 #include "editor/editor_scale.h"
 #include "scene/gui/check_box.h"
 #include "scene/gui/view_panner.h"
+#include "scene/resources/texture.h"
 
 void draw_margin_line(Control *edit_draw, Vector2 from, Vector2 to) {
 	Vector2 line = (to - from).normalized() * 10;
@@ -228,8 +229,8 @@ void TextureRegionEditor::_region_draw() {
 	Size2 vmin = vscroll->get_combined_minimum_size();
 
 	// Avoid scrollbar overlapping.
-	hscroll->set_anchor_and_offset(SIDE_RIGHT, ANCHOR_END, vscroll->is_visible() ? -vmin.width : 0);
-	vscroll->set_anchor_and_offset(SIDE_BOTTOM, ANCHOR_END, hscroll->is_visible() ? -hmin.height : 0);
+	hscroll->set_anchor_and_offset(SIDE_RIGHT, Control::ANCHOR_END, vscroll->is_visible() ? -vmin.width : 0);
+	vscroll->set_anchor_and_offset(SIDE_BOTTOM, Control::ANCHOR_END, hscroll->is_visible() ? -hmin.height : 0);
 
 	updating_scroll = false;
 
@@ -817,8 +818,8 @@ void TextureRegionEditor::_notification(int p_what) {
 			zoom_reset->set_icon(get_theme_icon(SNAME("ZoomReset"), SNAME("EditorIcons")));
 			zoom_in->set_icon(get_theme_icon(SNAME("ZoomMore"), SNAME("EditorIcons")));
 
-			vscroll->set_anchors_and_offsets_preset(PRESET_RIGHT_WIDE);
-			hscroll->set_anchors_and_offsets_preset(PRESET_BOTTOM_WIDE);
+			vscroll->set_anchors_and_offsets_preset(Control::PRESET_RIGHT_WIDE);
+			hscroll->set_anchors_and_offsets_preset(Control::PRESET_BOTTOM_WIDE);
 			[[fallthrough]];
 		}
 		case EditorSettings::NOTIFICATION_EDITOR_SETTINGS_CHANGED: {
@@ -921,6 +922,7 @@ void TextureRegionEditor::edit(Object *p_obj) {
 		atlas_tex = Ref<AtlasTexture>(nullptr);
 	}
 	edit_draw->update();
+	popup_centered_ratio();
 }
 
 void TextureRegionEditor::_texture_changed() {
@@ -977,6 +979,9 @@ Vector2 TextureRegionEditor::snap_point(Vector2 p_target) const {
 }
 
 TextureRegionEditor::TextureRegionEditor() {
+	get_ok_button()->set_text(TTR("Close"));
+	VBoxContainer *vb = memnew(VBoxContainer);
+	add_child(vb);
 	node_sprite_2d = nullptr;
 	node_sprite_3d = nullptr;
 	node_ninepatch = nullptr;
@@ -992,7 +997,7 @@ TextureRegionEditor::TextureRegionEditor() {
 	drag = false;
 
 	HBoxContainer *hb_tools = memnew(HBoxContainer);
-	add_child(hb_tools);
+	vb->add_child(hb_tools);
 	hb_tools->add_child(memnew(Label(TTR("Snap Mode:"))));
 
 	snap_mode_button = memnew(OptionButton);
@@ -1076,12 +1081,12 @@ TextureRegionEditor::TextureRegionEditor() {
 	panner->set_callbacks(callable_mp(this, &TextureRegionEditor::_scroll_callback), callable_mp(this, &TextureRegionEditor::_pan_callback), callable_mp(this, &TextureRegionEditor::_zoom_callback));
 
 	edit_draw = memnew(Panel);
-	add_child(edit_draw);
-	edit_draw->set_v_size_flags(SIZE_EXPAND_FILL);
+	vb->add_child(edit_draw);
+	edit_draw->set_v_size_flags(Control::SIZE_EXPAND_FILL);
 	edit_draw->connect("draw", callable_mp(this, &TextureRegionEditor::_region_draw));
 	edit_draw->connect("gui_input", callable_mp(this, &TextureRegionEditor::_region_input));
 	edit_draw->connect("focus_exited", callable_mp(panner.ptr(), &ViewPanner::release_pan_key));
-	edit_draw->set_focus_mode(FOCUS_CLICK);
+	edit_draw->set_focus_mode(Control::FOCUS_CLICK);
 
 	draw_zoom = 1.0;
 	edit_draw->set_clip_contents(true);
@@ -1119,88 +1124,40 @@ TextureRegionEditor::TextureRegionEditor() {
 
 	updating_scroll = false;
 	autoslice_is_dirty = true;
-}
 
-void TextureRegionEditorPlugin::edit(Object *p_object) {
-	region_editor->edit(p_object);
+	set_title(TTR("Region Editor"));
 }
 
-bool TextureRegionEditorPlugin::handles(Object *p_object) const {
-	return p_object->is_class("Sprite2D") || p_object->is_class("Sprite3D") || p_object->is_class("NinePatchRect") || p_object->is_class("StyleBoxTexture") || p_object->is_class("AtlasTexture");
-}
+////////////////////////
 
-void TextureRegionEditorPlugin::_editor_visiblity_changed() {
-	manually_hidden = !region_editor->is_visible_in_tree();
+bool EditorInspectorPluginTextureRegion::can_handle(Object *p_object) {
+	return Object::cast_to<Sprite2D>(p_object) || Object::cast_to<Sprite3D>(p_object) || Object::cast_to<NinePatchRect>(p_object) || Object::cast_to<StyleBoxTexture>(p_object) || Object::cast_to<AtlasTexture>(p_object);
 }
 
-void TextureRegionEditorPlugin::make_visible(bool p_visible) {
-	if (p_visible) {
-		texture_region_button->show();
-		bool is_node_configured = region_editor->is_stylebox() || region_editor->is_atlas_texture() || region_editor->is_ninepatch();
-		is_node_configured |= region_editor->get_sprite_2d() && region_editor->get_sprite_2d()->is_region_enabled();
-		is_node_configured |= region_editor->get_sprite_3d() && region_editor->get_sprite_3d()->is_region_enabled();
-		if ((is_node_configured && !manually_hidden) || texture_region_button->is_pressed()) {
-			EditorNode::get_singleton()->make_bottom_panel_item_visible(region_editor);
-		}
-	} else {
-		if (region_editor->is_visible_in_tree()) {
-			EditorNode::get_singleton()->hide_bottom_panel();
-			manually_hidden = false;
-		}
-		texture_region_button->hide();
-		region_editor->edit(nullptr);
-	}
-}
-
-Dictionary TextureRegionEditorPlugin::get_state() const {
-	Dictionary state;
-	state["snap_offset"] = region_editor->snap_offset;
-	state["snap_step"] = region_editor->snap_step;
-	state["snap_separation"] = region_editor->snap_separation;
-	state["snap_mode"] = region_editor->snap_mode;
-	return state;
+void EditorInspectorPluginTextureRegion::_region_edit(Object *p_object) {
+	texture_region_editor->edit(p_object);
 }
 
-void TextureRegionEditorPlugin::set_state(const Dictionary &p_state) {
-	Dictionary state = p_state;
-	if (state.has("snap_step")) {
-		Vector2 s = state["snap_step"];
-		region_editor->sb_step_x->set_value(s.x);
-		region_editor->sb_step_y->set_value(s.y);
-		region_editor->snap_step = s;
-	}
-
-	if (state.has("snap_offset")) {
-		Vector2 ofs = state["snap_offset"];
-		region_editor->sb_off_x->set_value(ofs.x);
-		region_editor->sb_off_y->set_value(ofs.y);
-		region_editor->snap_offset = ofs;
-	}
-
-	if (state.has("snap_separation")) {
-		Vector2 sep = state["snap_separation"];
-		region_editor->sb_sep_x->set_value(sep.x);
-		region_editor->sb_sep_y->set_value(sep.y);
-		region_editor->snap_separation = sep;
-	}
-
-	if (state.has("snap_mode")) {
-		region_editor->_set_snap_mode(state["snap_mode"]);
-		region_editor->snap_mode_button->select(state["snap_mode"]);
+bool EditorInspectorPluginTextureRegion::parse_property(Object *p_object, const Variant::Type p_type, const String &p_path, const PropertyHint p_hint, const String &p_hint_text, const uint32_t p_usage, const bool p_wide) {
+	if ((p_type == Variant::RECT2 || p_type == Variant::RECT2I)) {
+		if (((Object::cast_to<Sprite2D>(p_object) || Object::cast_to<Sprite3D>(p_object) || Object::cast_to<NinePatchRect>(p_object) || Object::cast_to<StyleBoxTexture>(p_object)) && p_path == "region_rect") || (Object::cast_to<AtlasTexture>(p_object) && p_path == "region")) {
+			Button *button = memnew(Button);
+			button->set_text(TTR("Edit Region"));
+			button->set_icon(texture_region_editor->get_theme_icon(SNAME("RegionEdit"), SNAME("EditorIcons")));
+			button->connect("pressed", callable_mp(this, &EditorInspectorPluginTextureRegion::_region_edit), varray(p_object));
+			add_property_editor(p_path, button, true);
+		}
 	}
+	return false; //not exclusive
 }
 
-void TextureRegionEditorPlugin::_bind_methods() {
+EditorInspectorPluginTextureRegion::EditorInspectorPluginTextureRegion() {
+	texture_region_editor = memnew(TextureRegionEditor);
+	EditorNode::get_singleton()->get_gui_base()->add_child(texture_region_editor);
 }
 
 TextureRegionEditorPlugin::TextureRegionEditorPlugin() {
-	manually_hidden = false;
-
-	region_editor = memnew(TextureRegionEditor);
-	region_editor->set_custom_minimum_size(Size2(0, 200) * EDSCALE);
-	region_editor->hide();
-	region_editor->connect("visibility_changed", callable_mp(this, &TextureRegionEditorPlugin::_editor_visiblity_changed));
-
-	texture_region_button = EditorNode::get_singleton()->add_bottom_panel_item(TTR("TextureRegion"), region_editor);
-	texture_region_button->hide();
+	Ref<EditorInspectorPluginTextureRegion> inspector_plugin;
+	inspector_plugin.instantiate();
+	add_inspector_plugin(inspector_plugin);
 }
diff --git a/editor/plugins/texture_region_editor_plugin.h b/editor/plugins/texture_region_editor_plugin.h
index 2c4ab72743..dd92f6e3eb 100644
--- a/editor/plugins/texture_region_editor_plugin.h
+++ b/editor/plugins/texture_region_editor_plugin.h
@@ -41,8 +41,8 @@
 
 class ViewPanner;
 
-class TextureRegionEditor : public VBoxContainer {
-	GDCLASS(TextureRegionEditor, VBoxContainer);
+class TextureRegionEditor : public AcceptDialog {
+	GDCLASS(TextureRegionEditor, AcceptDialog);
 
 	enum SnapMode {
 		SNAP_NONE,
@@ -142,26 +142,27 @@ public:
 	TextureRegionEditor();
 };
 
-class TextureRegionEditorPlugin : public EditorPlugin {
-	GDCLASS(TextureRegionEditorPlugin, EditorPlugin);
+//
 
-	bool manually_hidden;
-	Button *texture_region_button = nullptr;
-	TextureRegionEditor *region_editor = nullptr;
+class EditorInspectorPluginTextureRegion : public EditorInspectorPlugin {
+	GDCLASS(EditorInspectorPluginTextureRegion, EditorInspectorPlugin);
 
-protected:
-	static void _bind_methods();
+	TextureRegionEditor *texture_region_editor = nullptr;
+
+	void _region_edit(Object *p_object);
 
-	void _editor_visiblity_changed();
+public:
+	virtual bool can_handle(Object *p_object) override;
+	virtual bool parse_property(Object *p_object, const Variant::Type p_type, const String &p_path, const PropertyHint p_hint, const String &p_hint_text, const uint32_t p_usage, const bool p_wide) override;
+
+	EditorInspectorPluginTextureRegion();
+};
+
+class TextureRegionEditorPlugin : public EditorPlugin {
+	GDCLASS(TextureRegionEditorPlugin, EditorPlugin);
 
 public:
 	virtual String get_name() const override { return "TextureRegion"; }
-	bool has_main_screen() const override { return false; }
-	virtual void edit(Object *p_object) override;
-	virtual bool handles(Object *p_object) const override;
-	virtual void make_visible(bool p_visible) override;
-	void set_state(const Dictionary &p_state) override;
-	Dictionary get_state() const override;
 
 	TextureRegionEditorPlugin();
 };