st

Index Commits Files Refs README LICENSE

commit 4db3df312ada9d92564d5580fb4e67f7704efff8
parent e8c13ebe8001a7870a70b698d8b8fa80b7c90fd3
Author: Aurélien Aptel <aurelien.aptel@gmail.com>
Date:   Thu, 26 Aug 2010 21:37:12 +0200

faster resizing.

Diffstat:
M
st.c
 | 
21
+++++++++------------

1 file changed, 9 insertions(+), 12 deletions(-)
diff --git a/st.c b/st.c
@@ -1001,23 +1001,21 @@ tputs(char *s, int len) {
 void
 tresize(int col, int row) {
     int i;
-    Line *line;
     int minrow = MIN(row, term.row);
     int mincol = MIN(col, term.col);
 
     if(col < 1 || row < 1)
         return;
-    /* alloc */
-    line = calloc(row, sizeof(Line));
-    for(i = 0 ; i < row; i++)
-        line[i] = calloc(col, sizeof(Glyph));
-    /* copy */
-    for(i = 0 ; i < minrow; i++)
-        memcpy(line[i], term.line[i], mincol * sizeof(Glyph));
-    /* free */
-    for(i = 0; i < term.row; i++)
+
+    for(i = row; i < term.row; i++)
         free(term.line[i]);
-    free(term.line);
+    term.line = realloc(term.line, row * sizeof(Line));
+    for(i = 0; i < minrow; i++) {
+        term.line[i] = realloc(term.line[i], col * sizeof(Glyph));
+        memset(term.line[i] + mincol, 0, (col - mincol) * sizeof(Glyph));
+    }
+    for(/* i == minrow */; i < row; i++)
+        term.line[i] = calloc(col, sizeof(Glyph));
     
     LIMIT(term.c.x, 0, col-1);
     LIMIT(term.c.y, 0, row-1);
@@ -1025,7 +1023,6 @@ tresize(int col, int row) {
     LIMIT(term.bot, 0, row-1);
     
     term.bot = row-1;
-    term.line = line;
     term.col = col, term.row = row;
 }