move code into new xresize func, add early exit to resize

diff --git a/st.c b/st.c
index 147a6fa..594b0d3 100644 (file)
--- a/st.c
+++ b/st.c
@@ -190,6 +190,7 @@ static void xdrawcursor(void);
 static void xinit(void);
 static void xloadcols(void);
 static void xseturgency(int);
+static void xresize(int, int);
 
 static void expose(XEvent *);
 static void visibility(XEvent *);
@@ -1258,6 +1259,14 @@ tresize(int col, int row) {
 }
 
 void
+xresize(int col, int row) {
+       xw.bufw = MAX(1, col * xw.cw);
+       xw.bufh = MAX(1, row * xw.ch);
+       XFreePixmap(xw.dis, xw.buf);
+       xw.buf = XCreatePixmap(xw.dis, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dis, xw.scr));
+}
+
+void
 xloadcols(void) {
        int i, r, g, b;
        XColor color;
@@ -1615,16 +1624,13 @@ resize(XEvent *e) {
        
        xw.w = e->xconfigure.width;
        xw.h = e->xconfigure.height;
-       xw.bufw = xw.w - 2*BORDER;
-       xw.bufh = xw.h - 2*BORDER;
-       col = xw.bufw / xw.cw;
-       row = xw.bufh / xw.ch;
+       col = (xw.w - 2*BORDER) / xw.cw;
+       row = (xw.h - 2*BORDER) / xw.ch;
+       if(col == term.col && row == term.row)
+               return;
        tresize(col, row);
        ttyresize(col, row);
-       xw.bufh = MAX(1, xw.bufh);
-       xw.bufw = MAX(1, xw.bufw);
-       XFreePixmap(xw.dis, xw.buf);
-       xw.buf = XCreatePixmap(xw.dis, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dis, xw.scr));
+       xresize(col, row);
 }
 
 void