X-Git-Url: http://winboard.nl/cgi-bin?a=blobdiff_plain;f=backend.c;h=36131f683c4a3e4c810f8995ece67b248f984f4e;hb=24eec7ef0db2c98df79453e377a72cefe12b7569;hp=b49ba15f79099178e80c2d31033cb9c1ad0d8326;hpb=a2f3d790becbea6cd93ec51add89f2251a90bba4;p=xboard.git

diff --git a/backend.c b/backend.c
index b49ba15..36131f6 100644
--- a/backend.c
+++ b/backend.c
@@ -7981,6 +7981,23 @@ RightClick (ClickType action, int x, int y, int *fromX, int *fromY)
 }
 
 void
+Wheel (int dir, int x, int y)
+{
+    if(gameMode == EditPosition) {
+	int xSqr = EventToSquare(x, BOARD_WIDTH);
+	int ySqr = EventToSquare(y, BOARD_HEIGHT);
+	if(ySqr < 0 || xSqr < BOARD_LEFT || xSqr >= BOARD_RGHT) return;
+	if(flipView) xSqr = BOARD_WIDTH - 1 - xSqr; else ySqr = BOARD_HEIGHT - 1 - ySqr;
+	do {
+	    boards[currentMove][ySqr][xSqr] += dir;
+	    if((int) boards[currentMove][ySqr][xSqr] < WhitePawn) boards[currentMove][ySqr][xSqr] = BlackKing;
+	    if((int) boards[currentMove][ySqr][xSqr] > BlackKing) boards[currentMove][ySqr][xSqr] = WhitePawn;
+	} while(PieceToChar(boards[currentMove][ySqr][xSqr]) == '.');
+	DrawPosition(FALSE, boards[currentMove]);
+    } else if(dir > 0) ForwardEvent(); else BackwardEvent();
+}
+
+void
 SendProgramStatsToFrontend (ChessProgramState * cps, ChessProgramStats * cpstats)
 {
 //    char * hint = lastHint;