X-Git-Url: http://winboard.nl/cgi-bin?a=blobdiff_plain;f=winboard%2Fwevalgraph.c;h=3f1f07644849c018370fed2316b85a2567b857ef;hb=HEAD;hp=e438916e546f3bc36b9cc195b3bdcd8cc99e3b63;hpb=cb4cfa8ca5e717cb2c3d14988b6fc05e31bc1837;p=xboard.git

diff --git a/winboard/wevalgraph.c b/winboard/wevalgraph.c
index e438916..3f1f076 100644
--- a/winboard/wevalgraph.c
+++ b/winboard/wevalgraph.c
@@ -5,6 +5,9 @@
  *
  * Copyright 2005 Alessandro Scotti
  *
+ * Enhancements Copyright 2009, 2010, 2011, 2012, 2013, 2014, 2015,
+ * 2016 Free Software Foundation, Inc.
+ *
  * ------------------------------------------------------------------------
  *
  * GNU XBoard is free software: you can redistribute it and/or modify
@@ -49,7 +52,7 @@ static COLORREF crBlack = RGB( 0xAD, 0x5D, 0x3D );
 
 static HDC hdcPB = NULL;
 static HBITMAP hbmPB = NULL;
-static HPEN pens[6]; // [HGM] put all pens in one array
+static HPEN pens[PEN_ANY+1]; // [HGM] put all pens in one array
 static HBRUSH hbrHist[3] = { NULL, NULL, NULL };
 
 Boolean EvalGraphIsUp()
@@ -58,7 +61,7 @@ Boolean EvalGraphIsUp()
 }
 
 // [HGM] front-end, added as wrapper to avoid use of LineTo and MoveToEx in other routines (so they can be back-end) 
-void DrawSegment( int x, int y, int *lastX, int *lastY, enum PEN penType )
+void DrawSegment( int x, int y, int *lastX, int *lastY, int penType )
 {
     POINT stPt;
     if(penType == PEN_NONE) MoveToEx( hdcPB, x, y, &stPt ); else {
@@ -154,7 +157,7 @@ static VOID DisplayEvalGraph( HWND hWnd, HDC hDC )
 
     // back-end painting; calls back front-end primitives for lines, rectangles and text
     PaintEvalGraph();
-    SetWindowText(hWnd, MakeEvalTitle(T_("Evaluation Graph")));
+    SetWindowText(hWnd, MakeEvalTitle(differentialView ? T_("Blunder Graph") : T_("Evaluation Graph")));
 
     /* Copy bitmap into destination DC */
     BitBlt( hDC, 0, 0, nWidthPB, nHeightPB, hdcPB, 0, 0, SRCCOPY );
@@ -206,7 +209,14 @@ LRESULT CALLBACK EvalGraphProc( HWND hDlg, UINT message, WPARAM wParam, LPARAM l
         EndPaint( hDlg, &stPS );
         break;
 
+    case WM_MOUSEWHEEL:
+        if((short)HIWORD(wParam) < 0) appData.zoom++;
+        if((short)HIWORD(wParam) > 0 && appData.zoom > 1)  appData.zoom--;
+        goto paint;
+    case WM_RBUTTONDOWN:
+        differentialView = !differentialView;
     case WM_REFRESH_GRAPH:
+    paint:
         hDC = GetDC( hDlg );
         DisplayEvalGraph( hDlg, hDC );
         ReleaseDC( hDlg, hDC );