From 56310c5b198bc521e0a715377c68378b7bcf10a5 Mon Sep 17 00:00:00 2001
From: H.G. Muller <h.g.muller@hccnet.nl>
Date: Thu, 7 Jul 2011 19:28:04 +0200
Subject: [PATCH] Print 50-move counter in Engine-Output title

---
 engineoutput.c           |   20 ++++++++++++++++++++
 engineoutput.h           |    1 +
 winboard/wengineoutput.c |    5 +++++
 winboard/winboard.c      |    2 ++
 xengineoutput.c          |    7 +++++++
 xhistory.c               |    2 ++
 6 files changed, 37 insertions(+), 0 deletions(-)

diff --git a/engineoutput.c b/engineoutput.c
index 463f652..a21282e 100644
--- a/engineoutput.c
+++ b/engineoutput.c
@@ -43,6 +43,7 @@
 #include "common.h"
 #include "frontend.h"
 #include "backend.h"
+#include "moves.h"
 #include "engineoutput.h"
 
 typedef struct {
@@ -75,6 +76,25 @@ static char header[MSG_SIZ];
 #define MAX_VAR 400
 static int scores[MAX_VAR], textEnd[MAX_VAR], curDepth[2], nrVariations[2];
 
+void MakeEngineOutputTitle()
+{
+	static char buf[MSG_SIZ];
+	static char oldTitle[MSG_SIZ];
+	char *title = "Engine Output";
+      extern int initialRulePlies;
+	int count;
+	// figure out value of 50-move counter
+	count = currentMove;
+	while( (signed char)boards[count][EP_STATUS] <= EP_NONE && count > backwardMostMove ) count--;
+	if( count == backwardMostMove ) count -= initialRulePlies;
+	count += 2*appData.ruleMoves - currentMove;
+	snprintf(buf, MSG_SIZ, "%s (%d ply to draw)", title, count);
+	if(count <= 40) title = buf;
+	if(!strcmp(oldTitle, title)) return;
+	safeStrCpy(oldTitle, title, MSG_SIZ);
+	SetEngineOutputTitle(title);
+}
+
 // back end, due to front-end wrapper for SetWindowText, and new SetIcon arguments
 void SetEngineState( int which, int state, char * state_data )
 {
diff --git a/engineoutput.h b/engineoutput.h
index 03c9442..292cb93 100644
--- a/engineoutput.h
+++ b/engineoutput.h
@@ -66,4 +66,5 @@ void InsertIntoMemo( int which, char * text, int where );
 void DoClearMemo(int which);
 void ResizeWindowControls( int mode );
 int EngineOutputDialogExists();
+void SetEngineOutputTitle( char *title );
 
diff --git a/winboard/wengineoutput.c b/winboard/wengineoutput.c
index 301d4f6..f2c0e56 100644
--- a/winboard/wengineoutput.c
+++ b/winboard/wengineoutput.c
@@ -274,6 +274,11 @@ void DoSetWindowText(int which, int field, char *s_label)
     SetWindowText( outputField[which][field], s_label );
 }
 
+void SetEngineOutputTitle(char *title)
+{
+    SetWindowText( engineOutputDialog, title );
+}
+
 // This seems pure front end
 LRESULT CALLBACK EngineOutputProc( HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam )
 {
diff --git a/winboard/winboard.c b/winboard/winboard.c
index cf66f76..87b1830 100644
--- a/winboard/winboard.c
+++ b/winboard/winboard.c
@@ -9824,6 +9824,8 @@ HistorySet( char movelist[][2*MOVE_LEN], int first, int last, int current )
     MoveHistorySet( movelist, first, last, current, pvInfoList );
 
     EvalGraphSet( first, last, current, pvInfoList );
+
+    MakeEngineOutputTitle();
 }
 
 void
diff --git a/xengineoutput.c b/xengineoutput.c
index 3067fc1..11b0695 100644
--- a/xengineoutput.c
+++ b/xengineoutput.c
@@ -167,6 +167,13 @@ void DoSetWindowText(int which, int field, char *s_label)
 	XtSetValues(outputField[which][field], &arg, 1);
 }
 
+void SetEngineOutputTitle(char *title)
+{
+	Arg arg;
+	XtSetArg(arg, XtNtitle, (XtArgVal) title);
+	XtSetValues(engineOutputShell, &arg, 1);
+}
+
 void InsertIntoMemo( int which, char * text, int where )
 {
 	XawTextBlock t;
diff --git a/xhistory.c b/xhistory.c
index d79e7e8..e8dd0b4 100644
--- a/xhistory.c
+++ b/xhistory.c
@@ -176,5 +176,7 @@ HistorySet( char movelist[][2*MOVE_LEN], int first, int last, int current )
     MoveHistorySet( movelist, first, last, current, pvInfoList );
 
     EvalGraphSet( first, last, current, pvInfoList );
+
+    MakeEngineOutputTitle();
 }
 
-- 
1.7.0.4