From b92c878a286036af106e969a29b2689876aa5f65 Mon Sep 17 00:00:00 2001
From: Mikko Rasa <tdb@tdb.fi>
Date: Mon, 28 Feb 2011 15:18:18 +0000
Subject: [PATCH] Add a signal to notify when the automatic size of a widget
 changes

---
 source/button.cpp   |  1 +
 source/dropdown.cpp | 11 +++++++----
 source/dropdown.h   |  1 +
 source/image.cpp    |  1 +
 source/label.cpp    |  1 +
 source/list.cpp     |  4 ++++
 source/toggle.cpp   |  1 +
 source/widget.cpp   |  1 +
 source/widget.h     |  1 +
 9 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/source/button.cpp b/source/button.cpp
index 5095379..da2c433 100644
--- a/source/button.cpp
+++ b/source/button.cpp
@@ -51,6 +51,7 @@ void Button::autosize()
 void Button::set_text(const std::string &t)
 {
 	text = t;
+	signal_autosize_changed.emit();
 }
 
 void Button::set_icon(const GL::Texture2D *i)
diff --git a/source/dropdown.cpp b/source/dropdown.cpp
index 801c8a6..cff5387 100644
--- a/source/dropdown.cpp
+++ b/source/dropdown.cpp
@@ -24,6 +24,7 @@ Dropdown::Dropdown():
 {
 	add(list);
 	list.signal_item_selected.connect(sigc::mem_fun(this, &Dropdown::list_item_selected));
+	list.signal_autosize_changed.connect(sigc::mem_fun(this, &Dropdown::list_autosize_changed));
 }
 
 void Dropdown::autosize()
@@ -47,25 +48,21 @@ void Dropdown::autosize()
 void Dropdown::append(const string &item)
 {
 	list.append(item);
-	resize_list();
 }
 
 void Dropdown::insert(unsigned i, const string &v)
 {
 	list.insert(i, v);
-	resize_list();
 }
 
 void Dropdown::remove(unsigned i)
 {
 	list.remove(i);
-	resize_list();
 }
 
 void Dropdown::clear()
 {
 	list.clear();
-	resize_list();
 }
 
 unsigned Dropdown::get_n_items() const
@@ -129,6 +126,12 @@ void Dropdown::on_style_change()
 	resize_list();
 }
 
+void Dropdown::list_autosize_changed()
+{
+	resize_list();
+	signal_autosize_changed.emit();
+}
+
 void Dropdown::resize_list()
 {
 	list.autosize_all();
diff --git a/source/dropdown.h b/source/dropdown.h
index 598ad80..7cacf22 100644
--- a/source/dropdown.h
+++ b/source/dropdown.h
@@ -60,6 +60,7 @@ private:
 	virtual void on_geometry_change();
 	virtual void on_style_change();
 
+	void list_autosize_changed();
 	void resize_list();
 	void list_item_selected(unsigned, const std::string &);
 };
diff --git a/source/image.cpp b/source/image.cpp
index eb3bd6e..3c0cfa5 100644
--- a/source/image.cpp
+++ b/source/image.cpp
@@ -50,6 +50,7 @@ void Image::autosize()
 void Image::set_image(const GL::Texture2D *i)
 {
 	image = i;
+	signal_autosize_changed.emit();
 }
 
 void Image::set_keep_aspect(bool ka)
diff --git a/source/label.cpp b/source/label.cpp
index 30ccd62..e1015e8 100644
--- a/source/label.cpp
+++ b/source/label.cpp
@@ -38,6 +38,7 @@ void Label::autosize()
 void Label::set_text(const string &t)
 {
 	text = t;
+	signal_autosize_changed.emit();
 }
 
 void Label::render_special(const Part &part) const
diff --git a/source/list.cpp b/source/list.cpp
index ea3969c..f7cc4d7 100644
--- a/source/list.cpp
+++ b/source/list.cpp
@@ -91,6 +91,7 @@ void List::append(const string &v)
 {
 	items.push_back(v);
 	check_view_range();
+	signal_autosize_changed.emit();
 }
 
 void List::insert(unsigned i, const string &v)
@@ -100,6 +101,7 @@ void List::insert(unsigned i, const string &v)
 
 	items.insert(items.begin()+i, v);
 	check_view_range();
+	signal_autosize_changed.emit();
 }
 
 void List::remove(unsigned i)
@@ -114,6 +116,7 @@ void List::remove(unsigned i)
 		sel_index = -1;
 
 	check_view_range();
+	signal_autosize_changed.emit();
 }
 
 void List::clear()
@@ -122,6 +125,7 @@ void List::clear()
 	sel_index = -1;
 
 	check_view_range();
+	signal_autosize_changed.emit();
 }
 
 void List::set_selected_index(int i)
diff --git a/source/toggle.cpp b/source/toggle.cpp
index 753257c..41e38cb 100644
--- a/source/toggle.cpp
+++ b/source/toggle.cpp
@@ -42,6 +42,7 @@ void Toggle::autosize()
 void Toggle::set_text(const string &t)
 {
 	text = t;
+	signal_autosize_changed.emit();
 }
 
 void Toggle::set_exclusive(bool e)
diff --git a/source/widget.cpp b/source/widget.cpp
index 4e0c489..17bc4e3 100644
--- a/source/widget.cpp
+++ b/source/widget.cpp
@@ -102,6 +102,7 @@ void Widget::update_style()
 	}
 
 	on_style_change();
+	signal_autosize_changed.emit();
 }
 
 void Widget::set_tooltip(const string &t)
diff --git a/source/widget.h b/source/widget.h
index 5522ba3..3653970 100644
--- a/source/widget.h
+++ b/source/widget.h
@@ -41,6 +41,7 @@ public:
 	};
 
 	sigc::signal<void, bool> signal_visibility_changed;
+	sigc::signal<void> signal_autosize_changed;
 	sigc::signal<void> signal_request_focus;
 	sigc::signal<void> signal_grab_pointer;
 	sigc::signal<void> signal_ungrab_pointer;
-- 
2.43.0