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faster resizing.

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This commit is contained in:
Aurélien Aptel
2010-08-26 21:37:12 +02:00
parent e8c13ebe80
commit 4db3df312a
1 changed files with 9 additions and 12 deletions
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21
st.c
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@@ -1001,23 +1001,21 @@ tputs(char *s, int len) {
void void
tresize(int col, int row) { tresize(int col, int row) {
int i; int i;
Line *line;
int minrow = MIN(row, term.row); int minrow = MIN(row, term.row);
int mincol = MIN(col, term.col); int mincol = MIN(col, term.col);
if(col < 1 || row < 1) if(col < 1 || row < 1)
return; return;
/* alloc */
line = calloc(row, sizeof(Line)); for(i = row; i < term.row; i++)
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++)
free(term.line[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.x, 0, col-1);
LIMIT(term.c.y, 0, row-1); LIMIT(term.c.y, 0, row-1);
@@ -1025,7 +1023,6 @@ tresize(int col, int row) {
LIMIT(term.bot, 0, row-1); LIMIT(term.bot, 0, row-1);
term.bot = row-1; term.bot = row-1;
term.line = line;
term.col = col, term.row = row; term.col = col, term.row = row;
} }