From a79ec513efeea3e6d6aba6ae6aa4b7b99ec05d6c Mon Sep 17 00:00:00 2001
From: Rodolfo Ribeiro Gomes <rodolforg@gmail.com>
Date: Dec 13 2019 04:29:26 +0000
Subject: separate start-dragging code


---

diff --git a/synfig-studio/src/gui/widgets/widget_curves.cpp b/synfig-studio/src/gui/widgets/widget_curves.cpp
index b85dc2c..ffc41fb 100644
--- a/synfig-studio/src/gui/widgets/widget_curves.cpp
+++ b/synfig-studio/src/gui/widgets/widget_curves.cpp
@@ -419,17 +419,15 @@ Widget_Curves::on_event(GdkEvent *event)
 					bool is_already_selected = std::find(selected_points.begin(), selected_points.end(), pointed_item) != selected_points.end();
 					if (is_already_selected) {
 						if ((event->button.state & (GDK_CONTROL_MASK|GDK_SHIFT_MASK)) == 0) {
+							start_dragging(pointed_item);
 							pointer_state = POINTER_DRAGGING;
-							active_point = pointed_item;
-							active_point_initial_y = time_plot_data->get_pixel_y_coord(pointed_item.get_value(time_plot_data->dt));
 						} else
 							pointer_state = POINTER_SELECTING;
 					} else {
 						selected_points.clear();
 						selected_points.push_back(pointed_item);
+						start_dragging(pointed_item);
 						pointer_state = POINTER_DRAGGING;
-						active_point = pointed_item;
-						active_point_initial_y = time_plot_data->get_pixel_y_coord(pointed_item.get_value(time_plot_data->dt));
 					}
 				} else {
 					pointer_state = POINTER_SELECTING;
@@ -580,6 +578,13 @@ bool Widget_Curves::find_channelpoints_in_rect(Gdk::Rectangle rect, std::vector<
 	return list.size() > 0;
 }
 
+void Widget_Curves::start_dragging(const ChannelPoint& pointed_item)
+{
+	active_point = pointed_item;
+	active_point_initial_y = time_plot_data->get_pixel_y_coord(pointed_item.get_value(time_plot_data->dt));
+	pointer_state = POINTER_DRAGGING;
+}
+
 void Widget_Curves::cancel_dragging()
 {
 	if (pointer_state != POINTER_DRAGGING)
diff --git a/synfig-studio/src/gui/widgets/widget_curves.h b/synfig-studio/src/gui/widgets/widget_curves.h
index f207a73..8d25564 100644
--- a/synfig-studio/src/gui/widgets/widget_curves.h
+++ b/synfig-studio/src/gui/widgets/widget_curves.h
@@ -92,6 +92,7 @@ private:
 	int pointer_tracking_start_x, pointer_tracking_start_y;
 	ChannelPoint active_point;
 	int active_point_initial_y;
+	void start_dragging(const ChannelPoint &pointed_item);
 	void cancel_dragging();
 
 	static void set_value_base_for_channel_point(synfig::ValueBase &value_base, const ChannelPoint &channel_point, synfig::Real v);