From: H.G. Muller <h.g.muller@hccnet.nl>
Date: Fri, 8 Feb 2013 14:14:43 +0000 (+0100)
Subject: Revive -flipBlack option
X-Git-Url: http://winboard.nl/cgi-bin?a=commitdiff_plain;h=b7d7c902b3f869f85816a2da3872b03119affd3a;p=xboard.git

Revive -flipBlack option

The -flipBlack option in the cairo version is now implemented the same
way as it was in XBoard, swapping white and black pieces in filpView mode.
This requires a set black piece images that are the upside-down versions
of the white ones.
---

diff --git a/draw.c b/draw.c
index 53156f0..45aaf01 100644
--- a/draw.c
+++ b/draw.c
@@ -627,7 +627,7 @@ BlankSquare (cairo_surface_t *dest, int x, int y, int color, ChessSquare piece,
 static void
 pngDrawPiece (cairo_surface_t *dest, ChessSquare piece, int square_color, int x, int y)
 {
-    int kind, p = piece;
+    int kind;
     cairo_t *cr;
 
     if ((int)piece < (int) BlackPawn) {
@@ -636,7 +636,7 @@ pngDrawPiece (cairo_surface_t *dest, ChessSquare piece, int square_color, int x,
 	kind = 1;
 	piece -= BlackPawn;
     }
-    if(appData.upsideDown && flipView) { p += p < BlackPawn ? BlackPawn : -BlackPawn; }// swap white and black pieces
+    if(appData.upsideDown && flipView) kind = 1 - kind; // swap white and black pieces
     BlankSquare(dest, x, y, square_color, piece, 1); // erase previous contents with background
     cr = cairo_create (dest);
     cairo_set_source_surface (cr, pngPieceBitmaps[kind][piece], x, y);