Design change -- the callback system is unnecssary, all InputHandler_X11 needs to do is unmask events, which is already available through OpenMask(). Also, a few idle formatting tweaks.

stepmania/src/archutils/Unix/X11Helper.cpp

@@ -6,8 +6,6 @@
 
 #include "RageDisplay.h"	// RageDisplay
 
-vector<Callback_t>	pCBacks;	// Callbacks for the rendering
-					// thread
 list<long>		pMasks;		// Currently open masks
 Display			*pDpy;		// Running X connection
 Window			*pWin	= NULL;	// Current window
@@ -31,6 +29,11 @@ Display *X11Helper::Dpy()
 	return pDpy;
 }
 
+Window& X11Helper::Win()
+{
+	return pWin;
+}
+
 static bool pApplyMasks()
 {
 	int i;
@@ -52,13 +55,9 @@ bool X11Helper::OpenMask(long mask)
 {
 	pMasks.push_back(mask);
 	if(pWin != NULL)
-	{
-		return pApplyMasks();
-	}
+		{ return pApplyMasks(); }
 	else
-	{
-		return true;
-	}
+		{ return true; }
 }
 
 bool X11Helper::CloseMask(long mask)
@@ -78,13 +77,9 @@ bool X11Helper::CloseMask(long mask)
 	}
 
 	if(pWin != NULL)
-	{
-		return pApplyMasks();
-	}
+		{ return pApplyMasks(); }
 	else
-	{
-		return true;
-	}
+		{ return true; }
 }
 
 bool X11Helper::MakeWindow(int screenNum, int depth, Visual *visual int width=64, int height=64)
@@ -106,23 +101,9 @@ bool X11Helper::MakeWindow(int screenNum, int depth, Visual *visual int width=64
 		height, 0, depth, InputOutput, visual,
 		CWBorderPixel | CWColorMap | CWEventMask, &winAttribs);
 
-	i = 0;
-	while(i < pCBacks.size() )
-	{
-		pCBacks[i](pWin);
-		i++;
-	}
-
 	return pApplyMasks();	
 }
 
-bool X11Helper::Callback(Callback_t cb)
-{
-	pCBacks.push_back(cb);
-
-	return true;
-}
-
 void X11Helper::Stop()
 {
 	pCt--;

stepmania/src/archutils/Unix/X11Helper.h

@@ -19,14 +19,15 @@ namespace X11Helper
 	// didn't call Go() with a successful result first.
 	Display *Dpy();
 
+	// Get the current open window. Behavior is undefined if we didn't make
+	// a window yet.
+	Window& Win();
+
 	// (Re)create the window on the screen of this number with this depth,
 	// this visual type, this width (optional -- you can resize the window
 	// in your callback later), and this height (optional).
-	bool MakeWindow(int screenNum, int depth, Visual *visual, int width=64,
-								int height=64);
-
-	// Callback type.
-	typedef void (*Callback_t)(Window*);
+	bool MakeWindow(int screenNum, int depth, Visual *visual,
+					int width=64, int height=64);
 
 	// Unmask one X event type mask thingy (XSelectInput() arg 3) on the
 	// current window. Masked/unmasked events will carry between windows.
@@ -36,11 +37,6 @@ namespace X11Helper
 	// current window. Masked/unmasked events will carry between windows.
 	bool CloseMask(long mask);
 
-	// Register a callback for new windows (including the initial window).
-	// This callback will be called with 0 if I try to create a new window,
-	// but fail.
-	bool Callback(Callback_t cb);
-
 	// Destroy the connection, if appropriate; otherwise do some important
 	// internal session-tracking stuff (so you should call it anyway).
 	void Stop();