From d9d787503ae41842309f74a2eabc5b848abe1f22 Mon Sep 17 00:00:00 2001
From: Mikko Rasa <tdb@tdb.fi>
Date: Fri, 7 Dec 2012 20:59:43 +0200
Subject: [PATCH] Allow Root widgets to be created with custom input devices

---
 source/root.cpp | 52 ++++++++++++++++++++++++++++++++++++-------------
 source/root.h   | 20 ++++++++++++-------
 2 files changed, 51 insertions(+), 21 deletions(-)

diff --git a/source/root.cpp b/source/root.cpp
index e7c0a92..89db305 100644
--- a/source/root.cpp
+++ b/source/root.cpp
@@ -9,24 +9,48 @@
 namespace Msp {
 namespace GLtk {
 
-Root::Root(const Resources &r, Graphics::Window &w):
+Root::Root(const Resources &r, Graphics::Window &window):
 	resources(r),
-	window(w),
-	keyboard(window),
-	mouse(window),
-	lbl_tooltip(0),
-	tooltip_target(0)
+	keyboard(new Input::Keyboard(window)),
+	mouse(new Input::Mouse(window)),
+	own_input(true)
 {
 	set_geometry(Geometry(0, 0, window.get_width(), window.get_height()));
 
+	init();
+}
+
+Root::Root(const Resources &r, Input::Keyboard *k, Input::Mouse *m):
+	resources(r),
+	keyboard(k),
+	mouse(m),
+	own_input(false)
+{
+	init();
+}
+
+void Root::init()
+{
+	lbl_tooltip = 0;
+	tooltip_target = 0;
+
 	update_style();
 
-	mouse.signal_button_press.connect(sigc::mem_fun(this, &Root::button_press_event));
-	mouse.signal_button_release.connect(sigc::mem_fun(this, &Root::button_release_event));
-	mouse.signal_axis_motion.connect(sigc::mem_fun(this, &Root::axis_motion_event));
-	keyboard.signal_button_press.connect(sigc::mem_fun(this, &Root::key_press_event));
-	keyboard.signal_button_release.connect(sigc::mem_fun(this, &Root::key_release_event));
-	keyboard.signal_character.connect(sigc::mem_fun(this, &Root::character_event));
+	mouse->signal_button_press.connect(sigc::mem_fun(this, &Root::button_press_event));
+	mouse->signal_button_release.connect(sigc::mem_fun(this, &Root::button_release_event));
+	mouse->signal_axis_motion.connect(sigc::mem_fun(this, &Root::axis_motion_event));
+	keyboard->signal_button_press.connect(sigc::mem_fun(this, &Root::key_press_event));
+	keyboard->signal_button_release.connect(sigc::mem_fun(this, &Root::key_release_event));
+	keyboard->signal_character.connect(sigc::mem_fun(this, &Root::character_event));
+}
+
+Root::~Root()
+{
+	if(own_input)
+	{
+		delete keyboard;
+		delete mouse;
+	}
 }
 
 void Root::tick()
@@ -149,8 +173,8 @@ void Root::character_event(StringCodec::unichar ch)
 
 void Root::get_pointer(int &x, int &y)
 {
-	x = (mouse.get_axis_value(0)*0.5+0.5)*geom.w;
-	y = (mouse.get_axis_value(1)*0.5+0.5)*geom.h;
+	x = (mouse->get_axis_value(0)*0.5+0.5)*geom.w;
+	y = (mouse->get_axis_value(1)*0.5+0.5)*geom.h;
 }
 
 } // namespace GLtk
diff --git a/source/root.h b/source/root.h
index 53f8ff3..4e5309f 100644
--- a/source/root.h
+++ b/source/root.h
@@ -14,10 +14,8 @@ namespace GLtk {
 class Label;
 
 /**
-A Root is a special type of Panel that covers and entire Window and accepts
-input from it.  When created, a Root widget will take its size from the window
-it is created for.  The size can be changed, but a Root should always be
-rendered to fill the window in order to get coordinates mapped correctly.
+A Root is a special type of Panel that covers the entire viewport and receives
+input from keyboard and mouse.
 */
 class Root: public Panel, public sigc::trackable
 {
@@ -26,9 +24,9 @@ public:
 
 private:
 	const Resources &resources;
-	Graphics::Window &window;
-	Input::Keyboard keyboard;
-	Input::Mouse mouse;
+	Input::Keyboard *keyboard;
+	Input::Mouse *mouse;
+	bool own_input;
 	Label *lbl_tooltip;
 	int pointer_x;
 	int pointer_y;
@@ -36,8 +34,16 @@ private:
 	Widget *tooltip_target;
 
 public:
+	/** Creates a Root widget for a window.  The geometry is set to match the
+	window's size, and input devices are created automatically. */
 	Root(const Resources &, Graphics::Window &);
 
+	Root(const Resources &, Input::Keyboard *, Input::Mouse *);
+private:
+	void init();
+public:
+	virtual ~Root();
+
 	virtual const char *get_class() const { return "root"; }
 
 	const Resources &get_resources() const { return resources; }
-- 
2.43.0