From: David Lawrence Ramsey Date: Sat, 23 Jul 2005 20:39:41 +0000 (+0000) Subject: remove more redundant screen updates in edit_scroll(), and add a few X-Git-Tag: v1.3.9~132 X-Git-Url: https://git.wh0rd.org/?a=commitdiff_plain;h=27865304d7da65e4638af07c4307aba5a7fd18eb;p=nano.git remove more redundant screen updates in edit_scroll(), and add a few more miscellaneous cleanups git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@2914 35c25a1d-7b9e-4130-9fde-d3aeb78583b8 --- diff --git a/ChangeLog b/ChangeLog index 0413b364..31b52306 100644 --- a/ChangeLog +++ b/ChangeLog @@ -193,7 +193,7 @@ CVS code - - Clean up and simplify. (DLR) edit_update() - Since we no longer use TOP, remove references to it. Also, - don't call edit_refresh() anymore: it will call us. (DLR) + don't call edit_refresh() anymore; it will call us. (DLR) do_statusbar_next_word() - Rework to be more like do_statusbar_prev_word(), to avoid a potential problem if we start at the end of a line. (DLR) diff --git a/src/winio.c b/src/winio.c index 5ffbb2c6..8ae8964e 100644 --- a/src/winio.c +++ b/src/winio.c @@ -3493,6 +3493,7 @@ int need_vertical_update(size_t old_pww) * assume that current and current_x are up to date. */ void edit_scroll(updown direction, int nlines) { + bool do_redraw = need_vertical_update(0); const filestruct *foo; int i; @@ -3533,7 +3534,7 @@ void edit_scroll(updown direction, int nlines) /* If we scrolled up, we couldn't scroll up all nlines lines, and * we're now at the top of the file, we need to draw the entire edit - * window instead of just its top nlines lines. */ + * window. */ if (direction == UP && i > 0 && openfile->edittop == openfile->fileage) nlines = editwinrows - 2; @@ -3555,10 +3556,19 @@ void edit_scroll(updown direction, int nlines) foo = foo->next; } - /* Draw new lines on the blank lines before, inside, and after the - * scrolled region. */ - for (; nlines > 0 && foo != NULL; nlines--) { - update_line(foo, (foo == openfile->current) ? + /* Draw new lines on any blank lines before or inside the scrolled + * region. If we scrolled down and we're on the top line, or if we + * scrolled up and we're on the bottom line, the line won't be + * blank, so we don't need to draw it unless the mark is on or we're + * not on the first page. */ + for (i = nlines; i > 0 && foo != NULL; i--) { + if ((i == nlines && direction == DOWN) || (i == 1 && + direction == UP)) { + if (do_redraw) + update_line(foo, (foo == openfile->current) ? + openfile->current_x : 0); + } else + update_line(foo, (foo == openfile->current) ? openfile->current_x : 0); foo = foo->next; } @@ -3568,7 +3578,7 @@ void edit_scroll(updown direction, int nlines) * updated. */ void edit_redraw(const filestruct *old_current, size_t old_pww) { - bool do_refresh = need_vertical_update(0) || + bool do_redraw = need_vertical_update(0) || need_vertical_update(old_pww); const filestruct *foo; @@ -3589,7 +3599,7 @@ void edit_redraw(const filestruct *old_current, size_t old_pww) foo = old_current; while (foo != openfile->current) { - if (do_refresh) + if (do_redraw) update_line(foo, 0); #ifndef NANO_SMALL @@ -3603,7 +3613,7 @@ void edit_redraw(const filestruct *old_current, size_t old_pww) #endif } - if (do_refresh) + if (do_redraw) update_line(openfile->current, openfile->current_x); }