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tsm: screen: add flag to select alternate screen buffer

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The VTE layer can now set the TSM_SCREEN_ALTERNATE flag to switch to the
alternate screen-buffer and back.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
This commit is contained in:
David Herrmann 2012-10-11 11:31:14 +02:00
parent e23b9d0090
commit abd4764199
2 changed files with 13 additions and 0 deletions
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12
src/tsm_screen.c
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@ -869,18 +869,30 @@ void tsm_screen_reset(struct tsm_screen *con)
void tsm_screen_set_flags(struct tsm_screen *con, unsigned int flags)
{
unsigned int old;
if (!con || !flags)
return;
old = con->flags;
con->flags |= flags;
if (!(old & TSM_SCREEN_ALTERNATE) && (flags & TSM_SCREEN_ALTERNATE))
con->lines = con->alt_lines;
}
void tsm_screen_reset_flags(struct tsm_screen *con, unsigned int flags)
{
unsigned int old;
if (!con || !flags)
return;
old = con->flags;
con->flags &= ~flags;
if ((old & TSM_SCREEN_ALTERNATE) && (flags & TSM_SCREEN_ALTERNATE))
con->lines = con->main_lines;
}
unsigned int tsm_screen_get_flags(struct tsm_screen *con)

1
src/tsm_screen.h
View File

@ -71,6 +71,7 @@ typedef void (*tsm_log_t) (const char *file,
#define TSM_SCREEN_INVERSE 0x08
#define TSM_SCREEN_HIDE_CURSOR 0x10
#define TSM_SCREEN_FIXED_POS 0x20
#define TSM_SCREEN_ALTERNATE 0x40
#define TSM_SCREEN_OPT_RENDER_TIMING 0x01