Merge pull request #12635 from poke1024/line2d-poly-editor

Use AbstractPolygon2DEditor for Line2D

4 files changed, 131 insertions, 324 deletions

diff --git a/editor/plugins/abstract_polygon_2d_editor.cpp b/editor/plugins/abstract_polygon_2d_editor.cpp
index 2f839b96cf..f2f913d2b3 100644
--- a/editor/plugins/abstract_polygon_2d_editor.cpp
+++ b/editor/plugins/abstract_polygon_2d_editor.cpp
@@ -92,6 +92,11 @@ bool AbstractPolygon2DEditor::_is_empty() const {
 	return true;
 }
 
+bool AbstractPolygon2DEditor::_is_line() const {
+
+	return false;
+}
+
 int AbstractPolygon2DEditor::_get_polygon_count() const {
 
 	return 1;
@@ -158,12 +163,23 @@ void AbstractPolygon2DEditor::_menu_option(int p_option) {
 			mode = MODE_CREATE;
 			button_create->set_pressed(true);
 			button_edit->set_pressed(false);
+			button_delete->set_pressed(false);
 		} break;
 		case MODE_EDIT: {
 
+			wip_active = false;
 			mode = MODE_EDIT;
 			button_create->set_pressed(false);
 			button_edit->set_pressed(true);
+			button_delete->set_pressed(false);
+		} break;
+		case MODE_DELETE: {
+
+			wip_active = false;
+			mode = MODE_DELETE;
+			button_create->set_pressed(false);
+			button_edit->set_pressed(false);
+			button_delete->set_pressed(true);
 		} break;
 	}
 }
@@ -174,8 +190,9 @@ void AbstractPolygon2DEditor::_notification(int p_what) {
 
 		case NOTIFICATION_READY: {
 
-			button_create->set_icon(get_icon("Edit", "EditorIcons"));
-			button_edit->set_icon(get_icon("MovePoint", "EditorIcons"));
+			button_create->set_icon(EditorNode::get_singleton()->get_gui_base()->get_icon("CurveCreate", "EditorIcons"));
+			button_edit->set_icon(EditorNode::get_singleton()->get_gui_base()->get_icon("CurveEdit", "EditorIcons"));
+			button_delete->set_icon(EditorNode::get_singleton()->get_gui_base()->get_icon("CurveDelete", "EditorIcons"));
 			button_edit->set_pressed(true);
 
 			get_tree()->connect("node_removed", this, "_node_removed");
@@ -199,19 +216,32 @@ void AbstractPolygon2DEditor::_node_removed(Node *p_node) {
 	}
 }
 
+void AbstractPolygon2DEditor::_wip_changed() {
+
+	if (wip_active && _is_line()) {
+		_set_polygon(0, wip);
+	}
+}
+
 void AbstractPolygon2DEditor::_wip_close() {
+	if (_is_line()) {
 
-	if (wip.size() >= 3) {
+		_set_polygon(0, wip);
+	} else if (wip.size() >= 3) {
 
 		undo_redo->create_action(TTR("Create Poly"));
 		_action_add_polygon(wip);
 		_commit_action();
+	} else {
 
-		mode = MODE_EDIT;
-		button_edit->set_pressed(true);
-		button_create->set_pressed(false);
+		return;
 	}
 
+	mode = MODE_EDIT;
+	button_edit->set_pressed(true);
+	button_create->set_pressed(false);
+	button_delete->set_pressed(false);
+
 	wip.clear();
 	wip_active = false;
 
@@ -252,6 +282,7 @@ bool AbstractPolygon2DEditor::forward_gui_input(const Ref<InputEvent> &p_event)
 					wip.clear();
 					wip.push_back(cpoint);
 					wip_active = true;
+					_wip_changed();
 					edited_point = PosVertex(-1, 1, cpoint);
 					canvas_item_editor->get_viewport_control()->update();
 					hover_point = Vertex();
@@ -262,20 +293,20 @@ bool AbstractPolygon2DEditor::forward_gui_input(const Ref<InputEvent> &p_event)
 
 					const real_t grab_threshold = EDITOR_DEF("editors/poly_editor/point_grab_radius", 8);
 
-					if (wip.size() > 1 && xform.xform(wip[0]).distance_to(gpoint) < grab_threshold) {
+					if (!_is_line() && wip.size() > 1 && xform.xform(wip[0]).distance_to(gpoint) < grab_threshold) {
 						//wip closed
 						_wip_close();
 
 						return true;
 					} else {
 
+						//add wip point
 						wip.push_back(cpoint);
+						_wip_changed();
 						edited_point = PosVertex(-1, wip.size(), cpoint);
 						selected_point = Vertex(wip.size() - 1);
 						canvas_item_editor->get_viewport_control()->update();
 						return true;
-
-						//add wip point
 					}
 				}
 			} else if (mb->get_button_index() == BUTTON_RIGHT && mb->is_pressed() && wip_active) {
@@ -362,6 +393,18 @@ bool AbstractPolygon2DEditor::forward_gui_input(const Ref<InputEvent> &p_event)
 					return true;
 				}
 			}
+		} else if (mode == MODE_DELETE) {
+
+			if (mb->get_button_index() == BUTTON_LEFT && mb->is_pressed()) {
+
+				const PosVertex closest = closest_point(gpoint);
+
+				if (closest.valid()) {
+
+					remove_point(closest);
+					return true;
+				}
+			}
 		}
 	}
 
@@ -414,25 +457,33 @@ bool AbstractPolygon2DEditor::forward_gui_input(const Ref<InputEvent> &p_event)
 
 	Ref<InputEventKey> k = p_event;
 
-	if (k.is_valid() && k->is_pressed() && (k->get_scancode() == KEY_DELETE || k->get_scancode() == KEY_BACKSPACE)) {
-		if (wip_active && selected_point.polygon == -1) {
+	if (k.is_valid() && k->is_pressed()) {
 
-			if (wip.size() > selected_point.vertex) {
+		if (k->get_scancode() == KEY_DELETE || k->get_scancode() == KEY_BACKSPACE) {
 
-				wip.remove(selected_point.vertex);
-				selected_point = wip.size() - 1;
-				canvas_item_editor->get_viewport_control()->update();
-				return true;
-			}
-		} else {
+			if (wip_active && selected_point.polygon == -1) {
 
-			const Vertex active_point = get_active_point();
+				if (wip.size() > selected_point.vertex) {
 
-			if (active_point.valid()) {
+					wip.remove(selected_point.vertex);
+					_wip_changed();
+					selected_point = wip.size() - 1;
+					canvas_item_editor->get_viewport_control()->update();
+					return true;
+				}
+			} else {
+
+				const Vertex active_point = get_active_point();
+
+				if (active_point.valid()) {
 
-				remove_point(active_point);
-				return true;
+					remove_point(active_point);
+					return true;
+				}
 			}
+		} else if (wip_active && k->get_scancode() == KEY_ENTER) {
+
+			_wip_close();
 		}
 	}
 
@@ -451,6 +502,7 @@ void AbstractPolygon2DEditor::forward_draw_over_canvas(Control *p_canvas) {
 
 	const Vertex active_point = get_active_point();
 	const int n_polygons = _get_polygon_count();
+	const bool is_closed = !_is_line();
 
 	for (int j = -1; j < n_polygons; j++) {
 
@@ -476,7 +528,7 @@ void AbstractPolygon2DEditor::forward_draw_over_canvas(Control *p_canvas) {
 
 			const Color col = Color(0.5, 0.5, 0.5); // FIXME polygon->get_outline_color();
 			const int n = pre_move_edit.size();
-			for (int i = 0; i < n; i++) {
+			for (int i = 0; i < n - is_closed ? 0 : 1; i++) {
 
 				Vector2 p, p2;
 				p = pre_move_edit[i] + offset;
@@ -496,17 +548,22 @@ void AbstractPolygon2DEditor::forward_draw_over_canvas(Control *p_canvas) {
 
 			const Vertex vertex(j, i);
 
-			Vector2 p, p2;
-			p = (vertex == edited_point) ? edited_point.pos : (points[i] + offset);
-			if (j == edited_point.polygon && ((wip_active && i == n_points - 1) || (((i + 1) % n_points) == edited_point.vertex)))
-				p2 = edited_point.pos;
-			else
-				p2 = points[(i + 1) % n_points] + offset;
+			const Vector2 p = (vertex == edited_point) ? edited_point.pos : (points[i] + offset);
+			const Vector2 point = xform.xform(p);
 
-			Vector2 point = xform.xform(p);
-			Vector2 next_point = xform.xform(p2);
+			if (is_closed || i < n_points - 1) {
+
+				Vector2 p2;
+				if (j == edited_point.polygon &&
+						((wip_active && i == n_points - 1) || (((i + 1) % n_points) == edited_point.vertex)))
+					p2 = edited_point.pos;
+				else
+					p2 = points[(i + 1) % n_points] + offset;
+
+				const Vector2 next_point = xform.xform(p2);
+				vpc->draw_line(point, next_point, col, 2);
+			}
 
-			vpc->draw_line(point, next_point, col, 2);
 			Ref<Texture> handle = vertex == active_point ? selected_handle : default_handle;
 			vpc->draw_texture(handle, point - handle->get_size() * 0.5);
 		}
@@ -674,7 +731,7 @@ AbstractPolygon2DEditor::AbstractPolygon2DEditor(EditorNode *p_editor, bool p_wi
 	add_child(button_create);
 	button_create->connect("pressed", this, "_menu_option", varray(MODE_CREATE));
 	button_create->set_toggle_mode(true);
-	button_create->set_tooltip(TTR("Create a new polygon from scratch."));
+	button_create->set_tooltip(TTR("Create a new polygon from scratch"));
 
 	button_edit = memnew(ToolButton);
 	add_child(button_edit);
@@ -682,6 +739,12 @@ AbstractPolygon2DEditor::AbstractPolygon2DEditor(EditorNode *p_editor, bool p_wi
 	button_edit->set_toggle_mode(true);
 	button_edit->set_tooltip(TTR("Edit existing polygon:\nLMB: Move Point.\nCtrl+LMB: Split Segment.\nRMB: Erase Point."));
 
+	button_delete = memnew(ToolButton);
+	add_child(button_delete);
+	button_delete->connect("pressed", this, "_menu_option", varray(MODE_DELETE));
+	button_delete->set_toggle_mode(true);
+	button_delete->set_tooltip(TTR("Delete points"));
+
 	create_resource = memnew(ConfirmationDialog);
 	add_child(create_resource);
 	create_resource->get_ok()->set_text(TTR("Create"));
diff --git a/editor/plugins/abstract_polygon_2d_editor.h b/editor/plugins/abstract_polygon_2d_editor.h
index 8dd22958db..915fe0803e 100644
--- a/editor/plugins/abstract_polygon_2d_editor.h
+++ b/editor/plugins/abstract_polygon_2d_editor.h
@@ -46,6 +46,7 @@ class AbstractPolygon2DEditor : public HBoxContainer {
 
 	ToolButton *button_create;
 	ToolButton *button_edit;
+	ToolButton *button_delete;
 
 	struct Vertex {
 		Vertex();
@@ -89,6 +90,7 @@ protected:
 
 		MODE_CREATE,
 		MODE_EDIT,
+		MODE_DELETE,
 		MODE_CONT,
 
 	};
@@ -98,7 +100,9 @@ protected:
 	UndoRedo *undo_redo;
 
 	virtual void _menu_option(int p_option);
+	void _wip_changed();
 	void _wip_close();
+	bool _delete_point(const Vector2 &p_gpoint);
 
 	void _notification(int p_what);
 	void _node_removed(Node *p_node);
@@ -116,6 +120,7 @@ protected:
 	virtual Node2D *_get_node() const = 0;
 	virtual void _set_node(Node *p_polygon) = 0;
 
+	virtual bool _is_line() const;
 	virtual int _get_polygon_count() const;
 	virtual Vector2 _get_offset(int p_idx) const;
 	virtual Variant _get_polygon(int p_idx) const;
diff --git a/editor/plugins/line_2d_editor_plugin.cpp b/editor/plugins/line_2d_editor_plugin.cpp
index 0533aaa9c0..51fa488b43 100644
--- a/editor/plugins/line_2d_editor_plugin.cpp
+++ b/editor/plugins/line_2d_editor_plugin.cpp
@@ -29,259 +29,42 @@
 /*************************************************************************/
 #include "line_2d_editor_plugin.h"
 
-#include "canvas_item_editor_plugin.h"
-#include "editor/editor_settings.h"
-#include "os/file_access.h"
-#include "os/keyboard.h"
+Node2D *Line2DEditor::_get_node() const {
 
-//----------------------------------------------------------------------------
-// Line2DEditor
-//----------------------------------------------------------------------------
-
-void Line2DEditor::_node_removed(Node *p_node) {
-	if (p_node == node) {
-		node = NULL;
-		hide();
-	}
-}
-
-void Line2DEditor::_notification(int p_what) {
-	switch (p_what) {
-		case NOTIFICATION_VISIBILITY_CHANGED:
-			// This widget is not a child but should have the same visibility state
-			base_hb->set_visible(is_visible());
-			break;
-	}
-}
-
-int Line2DEditor::get_point_index_at(const Transform2D &xform, Vector2 gpos) {
-	ERR_FAIL_COND_V(node == 0, -1);
-
-	real_t grab_threshold = EDITOR_DEF("editors/poly_editor/point_grab_radius", 8);
-
-	for (int i = 0; i < node->get_point_count(); ++i) {
-		Point2 p = xform.xform(node->get_point_position(i));
-		if (gpos.distance_to(p) < grab_threshold) {
-			return i;
-		}
-	}
-
-	return -1;
-}
-
-bool Line2DEditor::forward_canvas_gui_input(const Ref<InputEvent> &p_event) {
-
-	if (!node)
-		return false;
-
-	if (!node->is_visible())
-		return false;
-
-	Ref<InputEventMouseButton> mb = p_event;
-
-	if (mb.is_valid()) {
-
-		Vector2 gpoint = mb->get_position();
-		Vector2 cpoint = node->get_global_transform().affine_inverse().xform(canvas_item_editor->snap_point(canvas_item_editor->get_canvas_transform().affine_inverse().xform(mb->get_position())));
-
-		if (mb->is_pressed() && _dragging == false) {
-			int i = get_point_index_at(canvas_item_editor->get_canvas_transform() * node->get_global_transform(), gpoint);
-			if (i != -1) {
-				if (mb->get_button_index() == BUTTON_LEFT && !mb->get_shift() && mode == MODE_EDIT) {
-					_dragging = true;
-					action_point = i;
-					moving_from = node->get_point_position(i);
-					moving_screen_from = gpoint;
-				} else if ((mb->get_button_index() == BUTTON_RIGHT && mode == MODE_EDIT) || (mb->get_button_index() == BUTTON_LEFT && mode == MODE_DELETE)) {
-					undo_redo->create_action(TTR("Remove Point from Line2D"));
-					undo_redo->add_do_method(node, "remove_point", i);
-					undo_redo->add_undo_method(node, "add_point", node->get_point_position(i), i);
-					undo_redo->add_do_method(canvas_item_editor->get_viewport_control(), "update");
-					undo_redo->add_undo_method(canvas_item_editor->get_viewport_control(), "update");
-					undo_redo->commit_action();
-				}
-				return true;
-			}
-		}
-
-		if (mb->is_pressed() && mb->get_button_index() == BUTTON_LEFT && ((mb->get_command() && mode == MODE_EDIT) || mode == MODE_CREATE)) {
-
-			undo_redo->create_action(TTR("Add Point to Line2D"));
-			undo_redo->add_do_method(node, "add_point", cpoint);
-			undo_redo->add_undo_method(node, "remove_point", node->get_point_count());
-			undo_redo->add_do_method(canvas_item_editor->get_viewport_control(), "update");
-			undo_redo->add_undo_method(canvas_item_editor->get_viewport_control(), "update");
-			undo_redo->commit_action();
-
-			_dragging = true;
-			action_point = node->get_point_count() - 1;
-			moving_from = node->get_point_position(action_point);
-			moving_screen_from = gpoint;
-
-			canvas_item_editor->get_viewport_control()->update();
-
-			return true;
-		}
-
-		if (!mb->is_pressed() && mb->get_button_index() == BUTTON_LEFT && _dragging) {
-			undo_redo->create_action(TTR("Move Point in Line2D"));
-			undo_redo->add_do_method(node, "set_point_position", action_point, cpoint);
-			undo_redo->add_undo_method(node, "set_point_position", action_point, moving_from);
-			undo_redo->add_do_method(canvas_item_editor->get_viewport_control(), "update");
-			undo_redo->add_undo_method(canvas_item_editor->get_viewport_control(), "update");
-			undo_redo->commit_action();
-			_dragging = false;
-			return true;
-		}
-	}
-
-	Ref<InputEventMouseMotion> mm = p_event;
-
-	if (mm.is_valid()) {
-
-		if (_dragging) {
-			Vector2 gpoint = mm->get_position();
-			Vector2 cpoint = node->get_global_transform().affine_inverse().xform(canvas_item_editor->snap_point(canvas_item_editor->get_canvas_transform().affine_inverse().xform(mm->get_position())));
-			node->set_point_position(action_point, cpoint);
-			canvas_item_editor->get_viewport_control()->update();
-			return true;
-		}
-	}
-
-	return false;
+	return node;
 }
 
-void Line2DEditor::forward_draw_over_canvas(Control *p_canvas) {
-
-	if (!node)
-		return;
-
-	if (!node->is_visible())
-		return;
+void Line2DEditor::_set_node(Node *p_line) {
 
-	Transform2D xform = canvas_item_editor->get_canvas_transform() * node->get_global_transform();
-	Ref<Texture> handle = get_icon("EditorHandle", "EditorIcons");
-	Size2 handle_size = handle->get_size();
-
-	int len = node->get_point_count();
-	Control *vpc = canvas_item_editor->get_viewport_control();
-
-	for (int i = 0; i < len; ++i) {
-		Vector2 point = xform.xform(node->get_point_position(i));
-		vpc->draw_texture_rect(handle, Rect2(point - handle_size * 0.5, handle_size), false);
-	}
+	node = Object::cast_to<Line2D>(p_line);
 }
 
-void Line2DEditor::_node_visibility_changed() {
-	if (!node)
-		return;
-	canvas_item_editor->get_viewport_control()->update();
-}
-
-void Line2DEditor::edit(Node *p_line2d) {
-
-	if (!canvas_item_editor)
-		canvas_item_editor = CanvasItemEditor::get_singleton();
+bool Line2DEditor::_is_line() const {
 
-	if (p_line2d) {
-		node = Object::cast_to<Line2D>(p_line2d);
-		if (!node->is_connected("visibility_changed", this, "_node_visibility_changed"))
-			node->connect("visibility_changed", this, "_node_visibility_changed");
-	} else {
-		// node may have been deleted at this point
-		if (node && node->is_connected("visibility_changed", this, "_node_visibility_changed"))
-			node->disconnect("visibility_changed", this, "_node_visibility_changed");
-		node = NULL;
-	}
+	return true;
 }
 
-void Line2DEditor::_bind_methods() {
-	ClassDB::bind_method(D_METHOD("_node_visibility_changed"), &Line2DEditor::_node_visibility_changed);
-	ClassDB::bind_method(D_METHOD("_mode_selected"), &Line2DEditor::_mode_selected);
-}
+Variant Line2DEditor::_get_polygon(int p_idx) const {
 
-void Line2DEditor::_mode_selected(int p_mode) {
-	for (int i = 0; i < _MODE_COUNT; ++i) {
-		toolbar_buttons[i]->set_pressed(i == p_mode);
-	}
-	mode = Mode(p_mode);
+	return _get_node()->get("points");
 }
 
-Line2DEditor::Line2DEditor(EditorNode *p_editor) {
-
-	canvas_item_editor = NULL;
-	editor = p_editor;
-	undo_redo = editor->get_undo_redo();
-
-	_dragging = false;
-
-	base_hb = memnew(HBoxContainer);
-	CanvasItemEditor::get_singleton()->add_control_to_menu_panel(base_hb);
-
-	sep = memnew(VSeparator);
-	base_hb->add_child(sep);
-
-	{
-		ToolButton *b = memnew(ToolButton);
-		b->set_icon(EditorNode::get_singleton()->get_gui_base()->get_icon("CurveEdit", "EditorIcons"));
-		b->set_toggle_mode(true);
-		b->set_focus_mode(Control::FOCUS_NONE);
-		b->set_tooltip(
-				TTR("Select Points") + "\n" + TTR("Shift+Drag: Select Control Points") + "\n" + keycode_get_string(KEY_MASK_CMD) + TTR("Click: Add Point") + "\n" + TTR("Right Click: Delete Point"));
-		b->connect("pressed", this, "_mode_selected", varray(MODE_EDIT));
-		toolbar_buttons[MODE_EDIT] = b;
-		base_hb->add_child(b);
-	}
+void Line2DEditor::_set_polygon(int p_idx, const Variant &p_polygon) const {
 
-	{
-		ToolButton *b = memnew(ToolButton);
-		b->set_icon(EditorNode::get_singleton()->get_gui_base()->get_icon("CurveCreate", "EditorIcons"));
-		b->set_toggle_mode(true);
-		b->set_focus_mode(Control::FOCUS_NONE);
-		b->set_tooltip(TTR("Add Point (in empty space)") + "\n" + TTR("Split Segment (in line)"));
-		b->connect("pressed", this, "_mode_selected", varray(MODE_CREATE));
-		toolbar_buttons[MODE_CREATE] = b;
-		base_hb->add_child(b);
-	}
-
-	{
-		ToolButton *b = memnew(ToolButton);
-		b->set_icon(EditorNode::get_singleton()->get_gui_base()->get_icon("CurveDelete", "EditorIcons"));
-		b->set_toggle_mode(true);
-		b->set_focus_mode(Control::FOCUS_NONE);
-		b->set_tooltip(TTR("Delete Point"));
-		b->connect("pressed", this, "_mode_selected", varray(MODE_DELETE));
-		toolbar_buttons[MODE_DELETE] = b;
-		base_hb->add_child(b);
-	}
-
-	base_hb->hide();
-	hide();
-
-	_mode_selected(MODE_CREATE);
+	_get_node()->set("points", p_polygon);
 }
 
-//----------------------------------------------------------------------------
-// Line2DEditorPlugin
-//----------------------------------------------------------------------------
-
-void Line2DEditorPlugin::edit(Object *p_object) {
-	line2d_editor->edit(Object::cast_to<Node>(p_object));
-}
+void Line2DEditor::_action_set_polygon(int p_idx, const Variant &p_previous, const Variant &p_polygon) {
 
-bool Line2DEditorPlugin::handles(Object *p_object) const {
-	return p_object->is_class("Line2D");
+	Node2D *node = _get_node();
+	undo_redo->add_do_method(node, "set_points", p_polygon);
+	undo_redo->add_undo_method(node, "set_points", p_previous);
 }
 
-void Line2DEditorPlugin::make_visible(bool p_visible) {
-	line2d_editor->set_visible(p_visible);
-	if (p_visible == false)
-		line2d_editor->edit(NULL);
+Line2DEditor::Line2DEditor(EditorNode *p_editor)
+	: AbstractPolygon2DEditor(p_editor) {
 }
 
-Line2DEditorPlugin::Line2DEditorPlugin(EditorNode *p_node) {
-	editor = p_node;
-	line2d_editor = memnew(Line2DEditor(p_node));
-	CanvasItemEditor::get_singleton()->add_control_to_menu_panel(line2d_editor);
-	line2d_editor->hide();
+Line2DEditorPlugin::Line2DEditorPlugin(EditorNode *p_node)
+	: AbstractPolygon2DEditorPlugin(p_node, memnew(Line2DEditor(p_node)), "Line2D") {
 }
diff --git a/editor/plugins/line_2d_editor_plugin.h b/editor/plugins/line_2d_editor_plugin.h
index 6858680aed..24c19c420d 100644
--- a/editor/plugins/line_2d_editor_plugin.h
+++ b/editor/plugins/line_2d_editor_plugin.h
@@ -30,78 +30,34 @@
 #ifndef LINE_2D_EDITOR_PLUGIN_H
 #define LINE_2D_EDITOR_PLUGIN_H
 
-#include "editor/editor_node.h"
-#include "editor/editor_plugin.h"
+#include "editor/plugins/abstract_polygon_2d_editor.h"
 #include "scene/2d/line_2d.h"
-#include "scene/2d/path_2d.h"
-#include "scene/gui/tool_button.h"
 
-class CanvasItemEditor;
+class Line2DEditor : public AbstractPolygon2DEditor {
 
-class Line2DEditor : public HBoxContainer {
-	GDCLASS(Line2DEditor, HBoxContainer)
-private:
-	void _mode_selected(int p_mode);
-	void _node_visibility_changed();
+	GDCLASS(Line2DEditor, AbstractPolygon2DEditor);
 
-	int get_point_index_at(const Transform2D &xform, Vector2 gpos);
-
-	UndoRedo *undo_redo;
-
-	CanvasItemEditor *canvas_item_editor;
-	EditorNode *editor;
-	Panel *panel;
 	Line2D *node;
 
-	HBoxContainer *base_hb;
-	Separator *sep;
-
-	enum Mode {
-		MODE_CREATE = 0,
-		MODE_EDIT,
-		MODE_DELETE,
-		_MODE_COUNT
-	};
-
-	Mode mode;
-	ToolButton *toolbar_buttons[_MODE_COUNT];
-
-	bool _dragging;
-	int action_point;
-	Point2 moving_from;
-	Point2 moving_screen_from;
-
 protected:
-	void _node_removed(Node *p_node);
-	void _notification(int p_what);
+	virtual Node2D *_get_node() const;
+	virtual void _set_node(Node *p_line);
 
-	static void _bind_methods();
+	virtual bool _is_line() const;
+	virtual Variant _get_polygon(int p_idx) const;
+	virtual void _set_polygon(int p_idx, const Variant &p_polygon) const;
+	virtual void _action_set_polygon(int p_idx, const Variant &p_previous, const Variant &p_polygon);
 
 public:
-	bool forward_canvas_gui_input(const Ref<InputEvent> &p_event);
-	void forward_draw_over_canvas(Control *p_canvas);
-	void edit(Node *p_line2d);
 	Line2DEditor(EditorNode *p_editor);
 };
 
-class Line2DEditorPlugin : public EditorPlugin {
-	GDCLASS(Line2DEditorPlugin, EditorPlugin)
-
-public:
-	virtual bool forward_canvas_gui_input(const Ref<InputEvent> &p_event) { return line2d_editor->forward_canvas_gui_input(p_event); }
-	virtual void forward_draw_over_canvas(Control *p_canvas) { return line2d_editor->forward_draw_over_canvas(p_canvas); }
+class Line2DEditorPlugin : public AbstractPolygon2DEditorPlugin {
 
-	virtual String get_name() const { return "Line2D"; }
-	bool has_main_screen() const { return false; }
-	virtual void edit(Object *p_object);
-	virtual bool handles(Object *p_object) const;
-	virtual void make_visible(bool p_visible);
+	GDCLASS(Line2DEditorPlugin, AbstractPolygon2DEditorPlugin);
 
+public:
 	Line2DEditorPlugin(EditorNode *p_node);
-
-private:
-	Line2DEditor *line2d_editor;
-	EditorNode *editor;
 };
 
 #endif // LINE_2D_EDITOR_PLUGIN_H