[hackers] [st] resize from the top. || Aurélien Aptel

changeset: 136:818975e71073
tag: tip
user: Aurélien Aptel <aurelien.aptel_AT_gmail.com>
date: Thu Sep 02 01:42:03 2010 +0200
files: st.c
description:
resize from the top.

diff -r a59c609033be -r 818975e71073 st.c
--- a/st.c Thu Sep 02 01:37:01 2010 +0200
+++ b/st.c Thu Sep 02 01:42:03 2010 +0200
@@ -1060,12 +1060,25 @@
         int i;
         int minrow = MIN(row, term.row);
         int mincol = MIN(col, term.col);
+ int slide = term.c.y - row + 1;
 
         if(col < 1 || row < 1)
                 return;
 
- /* free uneeded rows */
- for(i = row; i < term.row; i++) {
+ /* free unneeded rows */
+ i = 0;
+ if(slide > 0) {
+ /* slide screen to keep cursor where we expect it -
+ * tscrollup would work here, but we can optimize to
+ * memmove because we're freeing the earlier lines */
+ for(/* i = 0 */; i < slide; i++) {
+ free(term.line[i]);
+ free(term.alt[i]);
+ }
+ memmove(term.line, term.line + slide, row * sizeof(Line));
+ memmove(term.alt, term.alt + slide, row * sizeof(Line));
+ }
+ for(i += row; i < term.row; i++) {
                 free(term.line[i]);
                 free(term.alt[i]);
         }
Received on Thu Sep 02 2010 - 01:42:08 CEST