Fix hover event

[xboard.git] / backend.c

diff --git a/backend.c b/backend.c
index f449d26..0e0f80e 100644 (file)
--- a/backend.c
+++ b/backend.c
@@ -7169,13 +7169,17 @@ void
 HoverEvent (int xPix, int yPix, int x, int y)
 {
        static char baseMarker[BOARD_RANKS][BOARD_FILES], baseLegal[BOARD_RANKS][BOARD_FILES];
+       static int oldX = -1, oldY = -1, oldFromX = -1, oldFromY = -1;
        int r, f;
        if(dragging == 2) DragPieceMove(xPix, yPix); // [HGM] lion: drag without button for second leg
        if(!first.highlight) return;
-       if(hiX == -1 && hiY == -1 && x == fromX && y == fromY) // record markings 
+       if(fromX != oldFromX || fromY != oldFromY)  oldX = oldY = -1; // kludge to fake entry on from-click
+       if(x == oldX && y == oldY) return; // only do something if we enter new square
+       oldFromX = fromX; oldFromY = fromY;
+       if(oldX == -1 && oldY == -1 && x == fromX && y == fromY) // record markings after from-change
          for(r=0; r<BOARD_HEIGHT; r++) for(f=BOARD_LEFT; f<BOARD_RGHT; f++)
            baseMarker[r][f] = marker[r][f], baseLegal[r][f] = legal[r][f];
-       else if(hiX != x || hiY != y) {
+       else if(oldX != x || oldY != y) {
          // [HGM] lift: entered new to-square; redraw arrow, and inform engine
          for(r=0; r<BOARD_HEIGHT; r++) for(f=BOARD_LEFT; f<BOARD_RGHT; f++)
            marker[r][f] = baseMarker[r][f], legal[r][f] = baseLegal[r][f];
@@ -7184,7 +7188,8 @@ HoverEvent (int xPix, int yPix, int x, int y)
            snprintf(buf, MSG_SIZ, "hover %c%d\n", x + AAA, y + ONE - '0');
            SendToProgram(buf, &first);
          }
-         SetHighlights(fromX, fromY, x, y);
+         oldX = x; oldY = y;
+//       SetHighlights(fromX, fromY, x, y);
        }
 }