Prevent board-size oscillations

[xboard.git] / gtk / xboard.c

diff --git a/gtk/xboard.c b/gtk/xboard.c
index 0d04c5b..78fa0f6 100644 (file)
--- a/gtk/xboard.c
+++ b/gtk/xboard.c
@@ -1647,10 +1647,13 @@ ReSize (WindowPlacement *wp)
        if(sqy < sqx) sqx = sqy;
         if(sqx < 20) return;
        if(appData.overrideLineGap < 0) { // do second iteration with adjusted lineGap
+           int oldSqx = sqx;
            lg = lineGap = sqx < 37 ? 1 : sqx < 59 ? 2 : sqx < 116 ? 3 : 4;
            sqx = (wp->width  - lg - marginW) / BOARD_WIDTH - lg;
            sqy = (wp->height - lg - marginH - hc) / BOARD_HEIGHT - lg;
            if(sqy < sqx) sqx = sqy;
+           lg = sqx < 37 ? 1 : sqx < 59 ? 2 : sqx < 116 ? 3 : 4;
+           if(sqx == oldSqx + 1 && lg == lineGap + 1) sqx = oldSqx, squareSize = 0; // prevent oscillations, force resize by kludge
        }
        if(sqx != squareSize) {
            squareSize = sqx; // adopt new square size