From 5e3460aaaeff30a4d17672972231dccea34b79ef Mon Sep 17 00:00:00 2001
From: Paul Davis <paul@linuxaudiosystems.com>
Date: Tue, 27 Jul 2021 22:40:14 -0600
Subject: [PATCH] canvas: start to extend size allocation process for box
 packing

---
 libs/canvas/box.cc        | 14 ++++++++++++++
 libs/canvas/canvas/box.h  |  2 ++
 libs/canvas/canvas/item.h |  2 +-
 3 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/libs/canvas/box.cc b/libs/canvas/box.cc
index 91b9714d7a..fd3b871071 100644
--- a/libs/canvas/box.cc
+++ b/libs/canvas/box.cc
@@ -224,6 +224,20 @@ Box::reposition_children ()
 	set (r);
 }
 
+void
+Box::size_request (double& w, double& h) const
+{
+	w = width();
+	h = height();
+}
+
+void
+Box::size_allocate_children (Rect const & r)
+{
+	std::cerr << "Box allocated " << r << std::endl;
+	Item::size_allocate_children (r);
+}
+
 void
 Box::add (Item* i)
 {
diff --git a/libs/canvas/canvas/box.h b/libs/canvas/canvas/box.h
index 2d884a5e98..1ef5fa4472 100644
--- a/libs/canvas/canvas/box.h
+++ b/libs/canvas/canvas/box.h
@@ -67,6 +67,8 @@ public:
 	void set_homogenous (bool);
 
 	void compute_bounding_box () const;
+	void size_request (double& w, double& h) const;
+	void size_allocate_children (Rect const & r);
 
   protected:
 	Orientation orientation;
diff --git a/libs/canvas/canvas/item.h b/libs/canvas/canvas/item.h
index d3544585e1..43695c9e06 100644
--- a/libs/canvas/canvas/item.h
+++ b/libs/canvas/canvas/item.h
@@ -153,6 +153,7 @@ public:
 
 	virtual void preferred_size (Duple& minimum, Duple& natural) const;
 	virtual void size_allocate (Rect const&);
+	virtual void size_allocate_children (Rect const & r);
 	Rect allocation() const { return _allocation; }
 	void set_layout_sensitive (bool);
 	bool layout_sensitive () const { return _layout_sensitive; }
@@ -353,7 +354,6 @@ public:
 	void add_child_bounding_boxes (bool include_hidden = false) const;
 	void render_children (Rect const & area, Cairo::RefPtr<Cairo::Context> context) const;
 	void prepare_for_render_children (Rect const & area) const;
-	void size_allocate_children (Rect const & r);
 
 	Duple scroll_offset() const;
   public: