From 4db3df312ada9d92564d5580fb4e67f7704efff8 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Aur=C3=A9lien=20Aptel?= Date: Thu, 26 Aug 2010 21:37:12 +0200 Subject: [PATCH] faster resizing. --- st.c | 21 +++++++++------------ 1 file changed, 9 insertions(+), 12 deletions(-) diff --git a/st.c b/st.c index e288902..f44db79 100644 --- 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; }