diff options
Diffstat (limited to 'mbbsd/screen.c')
| -rw-r--r-- | mbbsd/screen.c | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/mbbsd/screen.c b/mbbsd/screen.c index b9b57b90..b7bde5ff 100644 --- a/mbbsd/screen.c +++ b/mbbsd/screen.c @@ -15,7 +15,6 @@ static int scrollcnt, tc_col, tc_line; #define MODIFIED (1) /* if line has been modifed, screen output */ #define STANDOUT (2) /* if this line has a standout region */ - void initscr(void) { @@ -522,11 +521,15 @@ standend(void) } } -// XXX race: signal handler write to screen, data larger than allocated buf -void screen_backup(int len, const screenline_t *bp, void *buf) +void screen_backup(int len, const screenline_t *bp, screen_backup_t *old) { int i; size_t offset=0; + void *buf = old->raw_memory; + + old->col = t_columns; + old->row = t_lines; + for(i=0;i<len;i++) { memcpy((char*)buf+offset, &bp[i], ((char*)&bp[i].data-(char*)&bp[i])); offset+=((char*)&bp[i].data-(char*)&bp[i]); @@ -544,10 +547,21 @@ size_t screen_backupsize(int len, const screenline_t *bp) return sum; } -void screen_restore(int len, screenline_t *bp, const void *buf) +void screen_restore(int len, screenline_t *bp, const screen_backup_t *old) { int i; size_t offset=0; + void *buf = old->raw_memory; + + // TODO try to be more user friendly. + if (old->col > t_columns || old->row > t_lines) { + move(1, 0); + clrtobot(); + move(2, 2); + outs("偵測到視窗改變大小，畫面繪製將會暫時失效"); + return; + } + for(i=0;i<len;i++) { memcpy(&bp[i], (char*)buf+offset, ((char*)&bp[i].data-(char*)&bp[i])); offset+=((char*)&bp[i].data-(char*)&bp[i]); |