diff options
Diffstat (limited to 'src/nvim/screen.c')
| -rw-r--r-- | src/nvim/screen.c | 86 |
1 files changed, 37 insertions, 49 deletions
diff --git a/src/nvim/screen.c b/src/nvim/screen.c index bcfef89cc2..ec48bf5dcf 100644 --- a/src/nvim/screen.c +++ b/src/nvim/screen.c @@ -4232,26 +4232,19 @@ win_line ( /* Remember that the line wraps, used for modeless copy. */ LineWraps[screen_row - 1] = TRUE; - /* - * Special trick to make copy/paste of wrapped lines work with - * xterm/screen: write an extra character beyond the end of - * the line. This will work with all terminal types - * (regardless of the xn,am settings). - * Only do this if the cursor is on the current line - * (something has been written in it). - * Don't do this for double-width characters. - * Don't do this for a window not at the right screen border. - */ - if (!(has_mbyte - && ((*mb_off2cells)(LineOffset[screen_row], - LineOffset[screen_row] + screen_Columns) - == 2 - || (*mb_off2cells)(LineOffset[screen_row - 1] - + (int)Columns - 2, - LineOffset[screen_row] + screen_Columns) - == 2)) - ) { - ui_add_linewrap(screen_row-1); + // Special trick to make copy/paste of wrapped lines work with + // xterm/screen: write an extra character beyond the end of + // the line. This will work with all terminal types + // (regardless of the xn,am settings). + // Only do this if the cursor is on the current line + // (something has been written in it). + // Don't do this for double-width characters. + // Don't do this for a window not at the right screen border. + if (utf_off2cells(LineOffset[screen_row], + LineOffset[screen_row] + screen_Columns) != 2 + && utf_off2cells(LineOffset[screen_row - 1] + (int)Columns - 2, + LineOffset[screen_row] + screen_Columns) != 2) { + ui_add_linewrap(screen_row - 1); } } @@ -4304,7 +4297,7 @@ static int char_needs_redraw(int off_from, int off_to, int cols) return (cols > 0 && ((schar_cmp(ScreenLines[off_from], ScreenLines[off_to]) || ScreenAttrs[off_from] != ScreenAttrs[off_to] - || ((*mb_off2cells)(off_from, off_from + cols) > 1 + || (utf_off2cells(off_from, off_from + cols) > 1 && schar_cmp(ScreenLines[off_from + 1], ScreenLines[off_to + 1]))) || p_wd < 0)); @@ -4330,15 +4323,11 @@ static void screen_line(int row, int coloff, int endcol, unsigned max_off_to; int col = 0; int hl; - int force = FALSE; /* force update rest of the line */ - int redraw_this /* bool: does character need redraw? */ - ; - int redraw_next; /* redraw_this for next character */ - int clear_next = FALSE; - int char_cells; /* 1: normal char */ - /* 2: occupies two display cells */ -# define CHAR_CELLS char_cells - + bool redraw_this; // Does character need redraw? + bool redraw_next; // redraw_this for next character + bool clear_next = false; + int char_cells; // 1: normal char + // 2: occupies two display cells int start_dirty = -1, end_dirty = 0; /* Check for illegal row and col, just in case. */ @@ -4383,15 +4372,14 @@ static void screen_line(int row, int coloff, int endcol, redraw_next = char_needs_redraw(off_from, off_to, endcol - col); while (col < endcol) { - if (has_mbyte && (col + 1 < endcol)) - char_cells = (*mb_off2cells)(off_from, max_off_from); - else - char_cells = 1; - + char_cells = 1; + if (col + 1 < endcol) { + char_cells = utf_off2cells(off_from, max_off_from); + } redraw_this = redraw_next; - redraw_next = force || char_needs_redraw(off_from + CHAR_CELLS, - off_to + CHAR_CELLS, endcol - col - CHAR_CELLS); - + redraw_next = char_needs_redraw(off_from + char_cells, + off_to + char_cells, + endcol - col - char_cells); if (redraw_this) { if (start_dirty == -1) { @@ -4403,12 +4391,12 @@ static void screen_line(int row, int coloff, int endcol, // the right halve of the old character. // Also required when writing the right halve of a double-width // char over the left halve of an existing one - if (has_mbyte && col + char_cells == endcol + if (col + char_cells == endcol && ((char_cells == 1 - && (*mb_off2cells)(off_to, max_off_to) > 1) + && utf_off2cells(off_to, max_off_to) > 1) || (char_cells == 2 - && (*mb_off2cells)(off_to, max_off_to) == 1 - && (*mb_off2cells)(off_to + 1, max_off_to) > 1))) { + && utf_off2cells(off_to, max_off_to) == 1 + && utf_off2cells(off_to + 1, max_off_to) > 1))) { clear_next = true; } @@ -4425,9 +4413,9 @@ static void screen_line(int row, int coloff, int endcol, } } - off_to += CHAR_CELLS; - off_from += CHAR_CELLS; - col += CHAR_CELLS; + off_to += char_cells; + off_from += char_cells; + col += char_cells; } if (clear_next) { @@ -5396,15 +5384,15 @@ void screen_puts_len(char_u *text, int textlen, int row, int col, int attr) // character with a one-cell character, need to clear the next // cell. Also when overwriting the left halve of a two-cell char // with the right halve of a two-cell char. Do this only once - // (mb_off2cells() may return 2 on the right halve). + // (utf8_off2cells() may return 2 on the right halve). if (clear_next_cell) { clear_next_cell = false; } else if ((len < 0 ? ptr[mbyte_blen] == NUL : ptr + mbyte_blen >= text + len) - && ((mbyte_cells == 1 && (*mb_off2cells)(off, max_off) > 1) + && ((mbyte_cells == 1 && utf_off2cells(off, max_off) > 1) || (mbyte_cells == 2 - && (*mb_off2cells)(off, max_off) == 1 - && (*mb_off2cells)(off + 1, max_off) > 1))) { + && utf_off2cells(off, max_off) == 1 + && utf_off2cells(off + 1, max_off) > 1))) { clear_next_cell = true; } |