display: don't clear a row beforehand -- just clear the remainder

It is a waste of time to first fully clear a row when right afterward
text will be written to it (for most of the row, on average).  So...
just clear the part of the row after the written text.  Curses has the
perfect function for this: clrtoeol().
master
Benno Schulenberg 2019-06-25 11:57:15 +02:00
parent 23cb26c58f
commit 699cacf7a4
1 changed files with 3 additions and 5 deletions

View File

@ -2427,9 +2427,6 @@ void edit_draw(linestruct *fileptr, const char *converted,
* might be beyond the null terminator of the string. */
#endif
/* Wipe out any existing text on the row. */
blank_row(edit, row);
#ifdef ENABLE_LINENUMBERS
/* If line numbering is switched on, put a line number in front of
* the text -- but only for the parts that are not softwrapped. */
@ -2437,7 +2434,7 @@ void edit_draw(linestruct *fileptr, const char *converted,
wattron(edit, interface_color_pair[LINE_NUMBER]);
#ifndef NANO_TINY
if (ISSET(SOFTWRAP) && from_col != 0)
mvwprintw(edit, row, 0, "%*s", margin - 1, " ");
mvwprintw(edit, row, 0, "%*s", margin, " ");
else
#endif
mvwprintw(edit, row, 0, "%*zd ", margin - 1, fileptr->lineno);
@ -2448,6 +2445,7 @@ void edit_draw(linestruct *fileptr, const char *converted,
/* First simply write the converted line -- afterward we'll add colors
* and the marking highlight on just the pieces that need it. */
mvwaddstr(edit, row, margin, converted);
wclrtoeol(edit);
#ifdef USING_OLD_NCURSES
/* Tell ncurses to really redraw the line without trying to optimize