- TR(TRACE_VIRTPUT | TRACE_CCALLS, (T_CALLED("wadd_wch(%p, %s)"), win,
- _tracech_t(wch)));
-
- if (win != 0) {
- PUTC_INIT;
- while (PUTC_i < CCHARW_MAX) {
- if ((PUTC_ch = wch->chars[PUTC_i++]) == L'\0')
- break;
- if ((PUTC_n = wcrtomb(PUTC_buf, PUTC_ch, &PUT_st)) <= 0) {
- code = ERR;
- if (is8bits(PUTC_ch))
- code = waddch(win, UChar(PUTC_ch) | wch->attr);
- break;
+/*
+ * The _WRAPPED flag is useful only for telling an application that we've just
+ * wrapped the cursor. We don't do anything with this flag except set it when
+ * wrapping, and clear it whenever we move the cursor. If we try to wrap at
+ * the lower-right corner of a window, we cannot move the cursor (since that
+ * wouldn't be legal). So we return an error (which is what SVr4 does).
+ * Unlike SVr4, we can successfully add a character to the lower-right corner
+ * (Solaris 2.6 does this also, however).
+ */
+static int
+wrap_to_next_line(WINDOW *win)
+{
+ win->_flags |= _WRAPPED;
+ if (newline_forces_scroll(win, &(win->_cury))) {
+ win->_curx = win->_maxx;
+ if (!win->_scroll)
+ return (ERR);
+ scroll(win);
+ }
+ win->_curx = 0;
+ return (OK);
+}
+
+static int wadd_wch_literal(WINDOW *, cchar_t);
+/*
+ * Fill the given number of cells with blanks using the current background
+ * rendition. This saves/restores the current x-position.
+ */
+static void
+fill_cells(WINDOW *win, int count)
+{
+ cchar_t blank = blankchar;
+ int save_x = win->_curx;
+ int save_y = win->_cury;
+
+ while (count-- > 0) {
+ if (wadd_wch_literal(win, blank) == ERR)
+ break;
+ }
+ win->_curx = (NCURSES_SIZE_T) save_x;
+ win->_cury = (NCURSES_SIZE_T) save_y;
+}
+
+static int
+wadd_wch_literal(WINDOW *win, cchar_t ch)
+{
+ int x;
+ int y;
+ struct ldat *line;
+
+ x = win->_curx;
+ y = win->_cury;
+
+ CHECK_POSITION(win, x, y);
+
+ ch = render_char(win, ch);
+
+ line = win->_line + y;
+
+ CHANGED_CELL(line, x);
+
+ /*
+ * Non-spacing characters are added to the current cell.
+ *
+ * Spacing characters that are wider than one column require some display
+ * adjustments.
+ */
+ {
+ int len = wcwidth(CharOf(ch));
+ int i;
+ int j;
+ wchar_t *chars;
+
+ if (len == 0) { /* non-spacing */
+ if ((x > 0 && y >= 0)
+ || (win->_maxx >= 0 && win->_cury >= 1)) {
+ if (x > 0 && y >= 0)
+ chars = (win->_line[y].text[x - 1].chars);
+ else
+ chars = (win->_line[y - 1].text[win->_maxx].chars);
+ for (i = 0; i < CCHARW_MAX; ++i) {
+ if (chars[i] == 0) {
+ TR(TRACE_VIRTPUT,
+ ("added non-spacing %d: %x",
+ x, (int) CharOf(ch)));
+ chars[i] = CharOf(ch);
+ break;
+ }
+ }