static void view_remove_line(TEXT_BUFFER_VIEW_REC *view, LINE_REC *line,
int linecount)
{
int realcount;
view_bookmarks_check(view, line);
if (view->buffer->cur_line == line) {
/* the last line is being removed */
LINE_REC *prevline;
prevline = view->buffer->first_line == line ? NULL :
textbuffer_line_last(view->buffer);
view->cache->last_linecount = prevline == NULL ? 0 :
view_get_linecount(view, prevline);
}
if (view->buffer->first_line == line) {
/* first line in the buffer - this is the most commonly
removed line.. */
if (view->bottom_startline == line) {
/* very small scrollback.. */
view->bottom_startline = view->bottom_startline->next;
view->bottom_subline = 0;
}
if (view->startline == line) {
/* removing the first line in screen */
int is_last = view->startline->next == NULL;
realcount = view_scroll(view, &view->startline,
&view->subline,
linecount, FALSE);
view->ypos -= realcount;
view->empty_linecount += linecount-realcount;
if (is_last == 1)
view->startline = NULL;
}
} else {
if (textbuffer_line_exists_after(view->bottom_startline,
line)) {
realcount = view_scroll(view, &view->bottom_startline,
&view->bottom_subline,
-linecount, FALSE);
view->empty_linecount += linecount-realcount;
}
if (textbuffer_line_exists_after(view->startline,
line)) {
view_remove_line_update_startline(view, line,
linecount);
}
}
view->bottom = view_is_bottom(view);
if (view->bottom) view->more_text = FALSE;
if (view->window != NULL)
term_refresh(view->window);
}
/* Set a bookmark in view to the bottom line */
void textbuffer_view_set_bookmark_bottom(TEXT_BUFFER_VIEW_REC *view,
const char *name)
{
LINE_REC *line;
g_return_if_fail(view != NULL);
g_return_if_fail(name != NULL);
if (view->bottom_startline != NULL) {
line = textbuffer_line_last(view->buffer);
textbuffer_view_set_bookmark(view, name, line);
}
}
/* Clear the view, don't actually remove any lines from buffer. */
void textbuffer_view_clear(TEXT_BUFFER_VIEW_REC *view)
{
g_return_if_fail(view != NULL);
view->ypos = -1;
view->bottom_startline = view->startline =
textbuffer_line_last(view->buffer);
view->bottom_subline = view->subline =
view->buffer->cur_line == NULL ? 0 :
view_get_linecount(view, view->buffer->cur_line);
view->empty_linecount = view->height;
view->bottom = TRUE;
view->more_text = FALSE;
textbuffer_view_redraw(view);
}
/* Recalculate view's bottom line information - try to keep the
original if possible */
static void textbuffer_view_init_bottom(TEXT_BUFFER_VIEW_REC *view)
{
LINE_REC *line;
int linecount, total;
if (view->empty_linecount == 0) {
/* no empty lines in screen, no need to try to keep
the old bottom startline */
view->bottom_startline = NULL;
}
total = 0;
line = textbuffer_line_last(view->buffer);
for (; line != NULL; line = line->prev) {
linecount = view_get_linecount(view, line);
if (line == view->bottom_startline) {
/* keep the old one, make sure that subline is ok */
if (view->bottom_subline > linecount)
view->bottom_subline = linecount;
view->empty_linecount = view->height - total -
(linecount-view->bottom_subline);
return;
}
total += linecount;
if (total >= view->height) {
view->bottom_startline = line;
view->bottom_subline = total - view->height;
view->empty_linecount = 0;
return;
}
}
/* not enough lines so we must be at the beginning of the buffer */
view->bottom_startline = view->buffer->first_line;
view->bottom_subline = 0;
view->empty_linecount = view->height - total;
}
