diff options
| -rw-r--r-- | view.c | 12 |
1 files changed, 10 insertions, 2 deletions
@@ -53,6 +53,8 @@ struct View { ViewEvent *events; int width, height; /* size of display area */ Filepos start, end; /* currently displayed area [start, end] in bytes from the start of the file */ + Filepos start_last; /* previously used start of visible area, used to update the mark */ + Mark start_mark; /* mark to keep track of the start of the visible area */ size_t lines_size; /* number of allocated bytes for lines (grows only) */ Line *lines; /* view->height number of lines representing view content */ Line *topline; /* top of the view, first line currently shown */ @@ -100,8 +102,14 @@ void view_tabwidth_set(View *view, int tabwidth) { /* reset internal view data structures (cell matrix, line offsets etc.) */ static void view_clear(View *view) { - /* calculate line number of first line */ - // TODO move elsewhere + if (view->start != view->start_last) { + view->start_mark = text_mark_set(view->text, view->start); + view->start_last = view->start; + } else { + size_t start = text_mark_get(view->text, view->start_mark); + if (start != EPOS) + view->start = start; + } view->topline = view->lines; view->topline->lineno = text_lineno_by_pos(view->text, view->start); view->lastline = view->topline; |