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Add new api for reading text window geometry

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This commit is contained in:
Ray Strode 2008-06-18 22:07:37 -04:00
parent d50a30ea79
commit 4d686ee8e8
1 changed files with 39 additions and 0 deletions
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39
src/libplybootsplash/ply-window.c
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@ -70,6 +70,9 @@ struct _ply_window
ply_fd_watch_t *tty_fd_watch;
ply_window_mode_t mode;
int number_of_text_rows;
int number_of_text_columns;
uint32_t should_force_text_mode : 1;
uint32_t original_term_attributes_saved : 1;
@ -299,6 +302,29 @@ out:
return console_state.v_active;
}
bool
ply_window_look_up_geometry (ply_window_t *window)
{
struct winsize window_size;
ply_trace ("looking up window text geometry");
if (ioctl (window->tty_fd, TIOCGWINSZ, &window_size) < 0)
{
ply_trace ("could not read window text geometry: %m");
return false;
}
window->number_of_text_rows = window_size.ws_row;
window->number_of_text_columns = window_size.ws_col;
ply_trace ("window is now %dx%d text cells",
window->number_of_text_columns,
window->number_of_text_rows);
return true;
}
bool
ply_window_open (ply_window_t *window)
{
@ -324,6 +350,15 @@ ply_window_open (ply_window_t *window)
if (!ply_window_set_mode (window, PLY_WINDOW_MODE_TEXT))
return false;
if (!ply_window_look_up_geometry (window))
return false;
ply_event_loop_watch_signal (window->loop,
SIGWINCH,
(ply_event_handler_t)
ply_window_look_up_geometry,
window);
if (window->loop != NULL)
window->tty_fd_watch = ply_event_loop_watch_fd (window->loop, window->tty_fd,
PLY_EVENT_LOOP_FD_STATUS_HAS_DATA,
@ -350,6 +385,8 @@ ply_window_close (ply_window_t *window)
window->tty_fd_watch = NULL;
}
ply_event_loop_stop_watching_signal (window->loop, SIGWINCH);
ply_window_set_buffered_input (window);
close (window->tty_fd);
@ -392,11 +429,13 @@ ply_window_set_mode (ply_window_t *window,
int
ply_window_get_number_of_text_rows (ply_window_t *window)
{
return window->number_of_text_rows;
}
int
ply_window_get_number_of_text_columns (ply_window_t *window)
{
return window->number_of_text_columns;
}
static void