redraw if we scroll on resize

[st.git] / st.c

diff --git a/st.c b/st.c
index 734ad0a..ed8e2a8 100644 (file)
--- a/st.c
+++ b/st.c
@@ -170,7 +170,7 @@ static void tputtab(void);
 static void tputc(char);
 static void tputs(char*, int);
 static void treset(void);
-static void tresize(int, int);
+static int tresize(int, int);
 static void tscrollup(int, int);
 static void tscrolldown(int, int);
 static void tsetattr(int*, int);
@@ -1202,7 +1202,7 @@ tputs(char *s, int len) {
                tputc(*s++);
 }
 
-void
+int
 tresize(int col, int row) {
        int i, x;
        int minrow = MIN(row, term.row);
@@ -1210,7 +1210,7 @@ tresize(int col, int row) {
        int slide = term.c.y - row + 1;
 
        if(col < 1 || row < 1)
-               return;
+               return 0;
 
        /* free unneeded rows */
        i = 0;
@@ -1256,6 +1256,7 @@ tresize(int col, int row) {
        tmoveto(term.c.x, term.c.y);
        /* reset scrolling region */
        tsetscroll(0, row-1);
+       return (slide > 0);
 }
 
 void
@@ -1274,9 +1275,17 @@ xresize(int col, int row) {
        if(xw.bufw > oldw)
                XFillRectangle(xw.dis, newbuf, dc.gc, oldw, 0,
                                xw.bufw-oldw, MIN(xw.bufh, oldh));
+       else if(xw.bufw < oldw && (BORDER > 0 || xw.w > xw.bufw))
+               XClearArea(xw.dis, xw.win, BORDER+xw.bufw, BORDER,
+                               xw.w-xw.bufh-BORDER, BORDER+MIN(xw.bufh, oldh),
+                               False);
        if(xw.bufh > oldh)
                XFillRectangle(xw.dis, newbuf, dc.gc, 0, oldh,
                                xw.bufw, xw.bufh-oldh);
+       else if(xw.bufh < oldh && (BORDER > 0 || xw.h > xw.bufh))
+               XClearArea(xw.dis, xw.win, BORDER, BORDER+xw.bufh,
+                               xw.w-2*BORDER, xw.h-xw.bufh-BORDER,
+                               False);
        xw.buf = newbuf;
 }
 
@@ -1642,7 +1651,8 @@ resize(XEvent *e) {
        row = (xw.h - 2*BORDER) / xw.ch;
        if(col == term.col && row == term.row)
                return;
-       tresize(col, row);
+       if(tresize(col, row))
+               draw(SCREEN_REDRAW);
        ttyresize(col, row);
        xresize(col, row);
 }