2D editor GUI input rework. Changes are:

- The input handling is done into several distinct functions, and the
  code is more consistent.
- The actions' history is more precise ("Edited CanvasItem"
  is now "Rotated CanvasItem","Moved CanvasItem",etc...)
- Fixed a little bug about input key events not forwarded correctly to plugins
- IK is followed by default when you move a bone node, the alt-key allow
  you to move it normally

10 files changed, 131 insertions, 92 deletions

diff --git a/scene/2d/animated_sprite.cpp b/scene/2d/animated_sprite.cpp
index f290a181ec..824f50495b 100644
--- a/scene/2d/animated_sprite.cpp
+++ b/scene/2d/animated_sprite.cpp
@@ -34,7 +34,51 @@
 
 #define NORMAL_SUFFIX "_normal"
 
-////////////////////////////
+Dictionary AnimatedSprite::_edit_get_state() const {
+	Dictionary state = Node2D::_edit_get_state();
+	state["offset"] = offset;
+	return state;
+}
+
+void AnimatedSprite::_edit_set_state(const Dictionary &p_state) {
+	Node2D::_edit_set_state(p_state);
+	set_offset(p_state["offset"]);
+}
+
+void AnimatedSprite::_edit_set_pivot(const Point2 &p_pivot) {
+	set_offset(get_offset() - p_pivot);
+	set_position(get_transform().xform(p_pivot));
+}
+
+Point2 AnimatedSprite::_edit_get_pivot() const {
+	return Vector2();
+}
+
+bool AnimatedSprite::_edit_use_pivot() const {
+	return true;
+}
+
+Rect2 AnimatedSprite::_edit_get_rect() const {
+	if (!frames.is_valid() || !frames->has_animation(animation) || frame < 0 || frame >= frames->get_frame_count(animation)) {
+		return Node2D::_edit_get_rect();
+	}
+
+	Ref<Texture> t;
+	if (animation)
+		t = frames->get_frame(animation, frame);
+	if (t.is_null())
+		return Node2D::_edit_get_rect();
+	Size2 s = t->get_size();
+
+	Point2 ofs = offset;
+	if (centered)
+		ofs -= s / 2;
+
+	if (s == Size2(0, 0))
+		s = Size2(1, 1);
+
+	return Rect2(ofs, s);
+}
 
 void SpriteFrames::add_frame(const StringName &p_anim, const Ref<Texture> &p_frame, int p_at_pos) {
 
@@ -248,20 +292,6 @@ SpriteFrames::SpriteFrames() {
 	add_animation(SceneStringNames::get_singleton()->_default);
 }
 
-void AnimatedSprite::_edit_set_pivot(const Point2 &p_pivot) {
-
-	set_offset(p_pivot);
-}
-
-Point2 AnimatedSprite::_edit_get_pivot() const {
-
-	return get_offset();
-}
-bool AnimatedSprite::_edit_use_pivot() const {
-
-	return true;
-}
-
 void AnimatedSprite::_validate_property(PropertyInfo &property) const {
 
 	if (!frames.is_valid())
@@ -491,29 +521,6 @@ bool AnimatedSprite::is_flipped_v() const {
 	return vflip;
 }
 
-Rect2 AnimatedSprite::_edit_get_rect() const {
-
-	if (!frames.is_valid() || !frames->has_animation(animation) || frame < 0 || frame >= frames->get_frame_count(animation)) {
-		return Node2D::_edit_get_rect();
-	}
-
-	Ref<Texture> t;
-	if (animation)
-		t = frames->get_frame(animation, frame);
-	if (t.is_null())
-		return Node2D::_edit_get_rect();
-	Size2i s = t->get_size();
-
-	Point2 ofs = offset;
-	if (centered)
-		ofs -= s / 2;
-
-	if (s == Size2(0, 0))
-		s = Size2(1, 1);
-
-	return Rect2(ofs, s);
-}
-
 void AnimatedSprite::_res_changed() {
 
 	set_frame(frame);
diff --git a/scene/2d/animated_sprite.h b/scene/2d/animated_sprite.h
index 2c356d619f..a38adf792c 100644
--- a/scene/2d/animated_sprite.h
+++ b/scene/2d/animated_sprite.h
@@ -150,9 +150,13 @@ protected:
 	virtual void _validate_property(PropertyInfo &property) const;
 
 public:
+	virtual Dictionary _edit_get_state() const;
+	virtual void _edit_set_state(const Dictionary &p_state);
+
 	virtual void _edit_set_pivot(const Point2 &p_pivot);
 	virtual Point2 _edit_get_pivot() const;
 	virtual bool _edit_use_pivot() const;
+	virtual Rect2 _edit_get_rect() const;
 
 	void set_sprite_frames(const Ref<SpriteFrames> &p_frames);
 	Ref<SpriteFrames> get_sprite_frames() const;
@@ -182,8 +186,6 @@ public:
 	void set_modulate(const Color &p_color);
 	Color get_modulate() const;
 
-	virtual Rect2 _edit_get_rect() const;
-
 	virtual String get_configuration_warning() const;
 	AnimatedSprite();
 };
diff --git a/scene/2d/canvas_item.h b/scene/2d/canvas_item.h
index 7e5bea0511..68384b9f1e 100644
--- a/scene/2d/canvas_item.h
+++ b/scene/2d/canvas_item.h
@@ -230,7 +230,7 @@ public:
 	// Used to resize/move/select the node
 	virtual void _edit_set_rect(const Rect2 &p_rect){};
 	virtual Rect2 _edit_get_rect() const { return Rect2(-32, -32, 64, 64); };
-	virtual bool _edit_is_selected_on_click(const Point2 &p_point, double p_tolerance) const { return true; }
+	virtual bool _edit_is_selected_on_click(const Point2 &p_point, double p_tolerance) const { return _edit_get_rect().has_point(p_point); }
 	Rect2 _edit_get_item_and_children_rect() const;
 	virtual bool _edit_use_rect() const { return false; };
 
diff --git a/scene/2d/light_2d.cpp b/scene/2d/light_2d.cpp
index 999d8a2630..1220ff299c 100644
--- a/scene/2d/light_2d.cpp
+++ b/scene/2d/light_2d.cpp
@@ -33,35 +33,36 @@
 #include "engine.h"
 #include "servers/visual_server.h"
 
-void Light2D::_edit_set_pivot(const Point2 &p_pivot) {
+Dictionary Light2D::_edit_get_state() const {
+	Dictionary state = Node2D::_edit_get_state();
+	state["offset"] = get_texture_offset();
+	return state;
+}
 
-	set_texture_offset(p_pivot);
+void Light2D::_edit_set_state(const Dictionary &p_state) {
+	Node2D::_edit_set_state(p_state);
+	set_texture_offset(p_state["offset"]);
 }
 
-Point2 Light2D::_edit_get_pivot() const {
+void Light2D::_edit_set_pivot(const Point2 &p_pivot) {
+	set_position(get_transform().xform(p_pivot));
+	set_texture_offset(get_texture_offset() - p_pivot);
+}
 
-	return get_texture_offset();
+Point2 Light2D::_edit_get_pivot() const {
+	return Vector2();
 }
-bool Light2D::_edit_use_pivot() const {
 
+bool Light2D::_edit_use_pivot() const {
 	return true;
 }
 
 Rect2 Light2D::_edit_get_rect() const {
-
 	if (texture.is_null())
-		return Rect2(0, 0, 1, 1);
-
-	Size2i s;
-
-	s = texture->get_size() * _scale;
-	Point2i ofs = texture_offset;
-	ofs -= s / 2;
-
-	if (s == Size2(0, 0))
-		s = Size2(1, 1);
+		return Node2D::_edit_get_rect();
 
-	return Rect2(ofs, s);
+	Size2 s = texture->get_size() * _scale;
+	return Rect2(texture_offset - s / 2.0, s);
 }
 
 void Light2D::_update_light_visibility() {
@@ -131,6 +132,7 @@ void Light2D::set_texture_offset(const Vector2 &p_offset) {
 	texture_offset = p_offset;
 	VS::get_singleton()->canvas_light_set_texture_offset(canvas_light, texture_offset);
 	item_rect_changed();
+	_change_notify("offset");
 }
 
 Vector2 Light2D::get_texture_offset() const {
diff --git a/scene/2d/light_2d.h b/scene/2d/light_2d.h
index b216ad5e95..16d8c485d4 100644
--- a/scene/2d/light_2d.h
+++ b/scene/2d/light_2d.h
@@ -85,6 +85,9 @@ protected:
 	static void _bind_methods();
 
 public:
+	virtual Dictionary _edit_get_state() const;
+	virtual void _edit_set_state(const Dictionary &p_state);
+
 	virtual void _edit_set_pivot(const Point2 &p_pivot);
 	virtual Point2 _edit_get_pivot() const;
 	virtual bool _edit_use_pivot() const;
diff --git a/scene/2d/node_2d.cpp b/scene/2d/node_2d.cpp
index 95a1cbfce3..95e24505be 100644
--- a/scene/2d/node_2d.cpp
+++ b/scene/2d/node_2d.cpp
@@ -46,10 +46,9 @@ Dictionary Node2D::_edit_get_state() const {
 }
 void Node2D::_edit_set_state(const Dictionary &p_state) {
 
-	Dictionary state = p_state;
-	pos = state["position"];
-	angle = state["rotation"];
-	_scale = state["scale"];
+	pos = p_state["position"];
+	angle = p_state["rotation"];
+	_scale = p_state["scale"];
 
 	_update_transform();
 	_change_notify("rotation");
@@ -60,6 +59,8 @@ void Node2D::_edit_set_state(const Dictionary &p_state) {
 
 void Node2D::_edit_set_position(const Point2 &p_position) {
 	pos = p_position;
+	_update_transform();
+	_change_notify("position");
 }
 
 Point2 Node2D::_edit_get_position() const {
diff --git a/scene/2d/polygon_2d.cpp b/scene/2d/polygon_2d.cpp
index f6cb796b10..e63dc4e515 100644
--- a/scene/2d/polygon_2d.cpp
+++ b/scene/2d/polygon_2d.cpp
@@ -31,8 +31,31 @@
 #include "polygon_2d.h"
 #include "core/math/geometry.h"
 
-Rect2 Polygon2D::_edit_get_rect() const {
+Dictionary Polygon2D::_edit_get_state() const {
+	Dictionary state = Node2D::_edit_get_state();
+	state["offset"] = offset;
+	return state;
+}
+
+void Polygon2D::_edit_set_state(const Dictionary &p_state) {
+	Node2D::_edit_set_state(p_state);
+	set_offset(p_state["offset"]);
+}
+
+void Polygon2D::_edit_set_pivot(const Point2 &p_pivot) {
+	set_position(get_transform().xform(p_pivot));
+	set_offset(get_offset() - p_pivot);
+}
+
+Point2 Polygon2D::_edit_get_pivot() const {
+	return Vector2();
+}
+
+bool Polygon2D::_edit_use_pivot() const {
+	return true;
+}
 
+Rect2 Polygon2D::_edit_get_rect() const {
 	if (rect_cache_dirty) {
 		int l = polygon.size();
 		PoolVector<Vector2>::Read r = polygon.read();
@@ -52,21 +75,7 @@ Rect2 Polygon2D::_edit_get_rect() const {
 
 bool Polygon2D::_edit_is_selected_on_click(const Point2 &p_point, double p_tolerance) const {
 
-	return Geometry::is_point_in_polygon(p_point, Variant(polygon));
-}
-
-void Polygon2D::_edit_set_pivot(const Point2 &p_pivot) {
-
-	set_offset(p_pivot);
-}
-
-Point2 Polygon2D::_edit_get_pivot() const {
-
-	return get_offset();
-}
-bool Polygon2D::_edit_use_pivot() const {
-
-	return true;
+	return Geometry::is_point_in_polygon(p_point - get_offset(), Variant(polygon));
 }
 
 void Polygon2D::_notification(int p_what) {
@@ -324,6 +333,7 @@ void Polygon2D::set_offset(const Vector2 &p_offset) {
 	offset = p_offset;
 	rect_cache_dirty = true;
 	update();
+	_change_notify("offset");
 }
 
 Vector2 Polygon2D::get_offset() const {
diff --git a/scene/2d/polygon_2d.h b/scene/2d/polygon_2d.h
index f62c78c55b..66f44cb3f1 100644
--- a/scene/2d/polygon_2d.h
+++ b/scene/2d/polygon_2d.h
@@ -59,6 +59,16 @@ protected:
 	static void _bind_methods();
 
 public:
+	virtual Dictionary _edit_get_state() const;
+	virtual void _edit_set_state(const Dictionary &p_state);
+
+	virtual void _edit_set_pivot(const Point2 &p_pivot);
+	virtual Point2 _edit_get_pivot() const;
+	virtual bool _edit_use_pivot() const;
+	virtual Rect2 _edit_get_rect() const;
+
+	virtual bool _edit_is_selected_on_click(const Point2 &p_point, double p_tolerance) const;
+
 	void set_polygon(const PoolVector<Vector2> &p_polygon);
 	PoolVector<Vector2> get_polygon() const;
 
@@ -98,15 +108,6 @@ public:
 	void set_offset(const Vector2 &p_offset);
 	Vector2 get_offset() const;
 
-	//editor stuff
-
-	virtual void _edit_set_pivot(const Point2 &p_pivot);
-	virtual Point2 _edit_get_pivot() const;
-	virtual bool _edit_use_pivot() const;
-
-	virtual Rect2 _edit_get_rect() const;
-	virtual bool _edit_is_selected_on_click(const Point2 &p_point, double p_tolerance) const;
-
 	Polygon2D();
 };
 
diff --git a/scene/2d/sprite.cpp b/scene/2d/sprite.cpp
index 9c344b9581..17ca066fc0 100644
--- a/scene/2d/sprite.cpp
+++ b/scene/2d/sprite.cpp
@@ -34,17 +34,27 @@
 #include "scene/main/viewport.h"
 #include "scene/scene_string_names.h"
 
-void Sprite::_edit_set_pivot(const Point2 &p_pivot) {
+Dictionary Sprite::_edit_get_state() const {
+	Dictionary state = Node2D::_edit_get_state();
+	state["offset"] = offset;
+	return state;
+}
 
-	set_offset(p_pivot);
+void Sprite::_edit_set_state(const Dictionary &p_state) {
+	Node2D::_edit_set_state(p_state);
+	set_offset(p_state["offset"]);
 }
 
-Point2 Sprite::_edit_get_pivot() const {
+void Sprite::_edit_set_pivot(const Point2 &p_pivot) {
+	set_offset(get_offset() - p_pivot);
+	set_position(get_transform().xform(p_pivot));
+}
 
-	return get_offset();
+Point2 Sprite::_edit_get_pivot() const {
+	return Vector2();
 }
-bool Sprite::_edit_use_pivot() const {
 
+bool Sprite::_edit_use_pivot() const {
 	return true;
 }
 
diff --git a/scene/2d/sprite.h b/scene/2d/sprite.h
index 261165bbf9..0422e0635f 100644
--- a/scene/2d/sprite.h
+++ b/scene/2d/sprite.h
@@ -65,6 +65,9 @@ protected:
 	virtual void _validate_property(PropertyInfo &property) const;
 
 public:
+	virtual Dictionary _edit_get_state() const;
+	virtual void _edit_set_state(const Dictionary &p_state);
+
 	virtual void _edit_set_pivot(const Point2 &p_pivot);
 	virtual Point2 _edit_get_pivot() const;
 	virtual bool _edit_use_pivot() const;