diff options
Diffstat (limited to 'libcons/cons.h')
| -rw-r--r-- | libcons/cons.h | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/libcons/cons.h b/libcons/cons.h index 67f4e45b..8105a723 100644 --- a/libcons/cons.h +++ b/libcons/cons.h @@ -136,6 +136,15 @@ extern const char *cons_client_version; version specification that should be printed for --version. */ extern char *cons_extra_version; +/* The user must define this function. Deallocate the scarce + resources (like font glyph slots, colors etc) in the LENGTH entries + of the screen matrix starting from position COL and ROW. This call + is immediately followed by calls to cons_vcons_write that cover the + same area. If there are no scarce resources, the caller might do + nothing. */ +void cons_vcons_clear (vcons_t vcons, size_t length, + uint32_t col, uint32_t row); + /* The user must define this function. Write LENGTH characters starting from STR on the virtual console VCONS, which is locked, starting from position COL and ROW. */ @@ -165,10 +174,10 @@ void cons_vcons_set_cursor_status (vcons_t vcons, uint32_t status); prepare a full refresh of the screen. In the latter case the user should not really perform any scrolling. Instead it might deallocate limited resources (like display glyph slots and palette - colors) if that helps to perform the subsequent write. It goes - without saying that the same deallocation, if any, should be - performed on the area that will be filled with the scrolled in - content. + colors) if that helps to perform the subsequent write, just like + cons_vcons_clear. It goes without saying that the same + deallocation, if any, should be performed on the area that will be + filled with the scrolled in content. XXX Possibly need a function to invalidate scrollback buffer, or in general to signal a switch of the console so state can be reset. |