--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/pdcurses/addch.c Sat Jan 09 17:41:21 2016 +0200
@@ -0,0 +1,408 @@
+/* Public Domain Curses */
+
+#include <curspriv.h>
+
+RCSID("$Id: addch.c,v 1.54 2008/07/13 16:08:17 wmcbrine Exp $")
+
+/*man-start**************************************************************
+
+ Name: addch
+
+ Synopsis:
+ int addch(const chtype ch);
+ int waddch(WINDOW *win, const chtype ch);
+ int mvaddch(int y, int x, const chtype ch);
+ int mvwaddch(WINDOW *win, int y, int x, const chtype ch);
+ int echochar(const chtype ch);
+ int wechochar(WINDOW *win, const chtype ch);
+
+ int addrawch(chtype ch);
+ int waddrawch(WINDOW *win, chtype ch);
+ int mvaddrawch(int y, int x, chtype ch);
+ int mvwaddrawch(WINDOW *win, int y, int x, chtype ch);
+
+ int add_wch(const cchar_t *wch);
+ int wadd_wch(WINDOW *win, const cchar_t *wch);
+ int mvadd_wch(int y, int x, const cchar_t *wch);
+ int mvwadd_wch(WINDOW *win, int y, int x, const cchar_t *wch);
+ int echo_wchar(const cchar_t *wch);
+ int wecho_wchar(WINDOW *win, const cchar_t *wch);
+
+ Description:
+ addch() adds the chtype ch to the default window (stdscr) at the
+ current cursor position, and advances the cursor. Note that
+ chtypes can convey both text (a single character) and
+ attributes, including a color pair. add_wch() is the wide-
+ character version of this function, taking a pointer to a
+ cchar_t instead of a chtype.
+
+ waddch() is like addch(), but also lets you specify the window.
+ (This is in fact the core output routine.) wadd_wch() is the
+ wide version.
+
+ mvaddch() moves the cursor to the specified (y, x) position, and
+ adds ch to stdscr. mvadd_wch() is the wide version.
+
+ mvwaddch() moves the cursor to the specified position and adds
+ ch to the specified window. mvwadd_wch() is the wide version.
+
+ echochar() adds ch to stdscr at the current cursor position and
+ calls refresh(). echo_wchar() is the wide version.
+
+ wechochar() adds ch to the specified window and calls
+ wrefresh(). wecho_wchar() is the wide version.
+
+ addrawch(), waddrawch(), mvaddrawch() and mvwaddrawch() are
+ PDCurses-specific wrappers for addch() etc. that disable the
+ translation of control characters.
+
+ The following applies to all these functions:
+
+ If the cursor moves on to the right margin, an automatic newline
+ is performed. If scrollok is enabled, and a character is added
+ to the bottom right corner of the window, the scrolling region
+ will be scrolled up one line. If scrolling is not allowed, ERR
+ will be returned.
+
+ If ch is a tab, newline, or backspace, the cursor will be moved
+ appropriately within the window. If ch is a newline, the
+ clrtoeol routine is called before the cursor is moved to the
+ beginning of the next line. If newline mapping is off, the
+ cursor will be moved to the next line, but the x coordinate will
+ be unchanged. If ch is a tab the cursor is moved to the next
+ tab position within the window. If ch is another control
+ character, it will be drawn in the ^X notation. Calling the
+ inch() routine after adding a control character returns the
+ representation of the control character, not the control
+ character.
+
+ Video attributes can be combined with a character by ORing them
+ into the parameter. Text, including attributes, can be copied
+ from one place to another by using inch() and addch().
+
+ Note that in PDCurses, for now, a cchar_t and a chtype are the
+ same. The text field is 16 bits wide, and is treated as Unicode
+ (UCS-2) when PDCurses is built with wide-character support
+ (define PDC_WIDE). So, in functions that take a chtype, like
+ addch(), both the wide and narrow versions will handle Unicode.
+ But for portability, you should use the wide functions.
+
+ Return Value:
+ All functions return OK on success and ERR on error.
+
+ Portability X/Open BSD SYS V
+ addch Y Y Y
+ waddch Y Y Y
+ mvaddch Y Y Y
+ mvwaddch Y Y Y
+ echochar Y - 3.0
+ wechochar Y - 3.0
+ addrawch - - -
+ waddrawch - - -
+ mvaddrawch - - -
+ mvwaddrawch - - -
+ add_wch Y
+ wadd_wch Y
+ mvadd_wch Y
+ mvwadd_wch Y
+ echo_wchar Y
+ wecho_wchar Y
+
+**man-end****************************************************************/
+
+int waddch(WINDOW *win, const chtype ch)
+{
+ int x, y;
+ chtype text, attr;
+ bool xlat;
+
+ PDC_LOG(("waddch() - called: win=%p ch=%x (text=%c attr=0x%x)\n",
+ win, ch, ch & A_CHARTEXT, ch & A_ATTRIBUTES));
+
+ if (!win)
+ return ERR;
+
+ x = win->_curx;
+ y = win->_cury;
+
+ if (y > win->_maxy || x > win->_maxx || y < 0 || x < 0)
+ return ERR;
+
+ xlat = !SP->raw_out && !(ch & A_ALTCHARSET);
+ text = ch & A_CHARTEXT;
+ attr = ch & A_ATTRIBUTES;
+
+ if (xlat && (text < ' ' || text == 0x7f))
+ {
+ int x2;
+
+ switch (text)
+ {
+ case '\t':
+ for (x2 = ((x / TABSIZE) + 1) * TABSIZE; x < x2; x++)
+ {
+ if (waddch(win, attr | ' ') == ERR)
+ return ERR;
+
+ /* if tab to next line, exit the loop */
+
+ if (!win->_curx)
+ break;
+ }
+ return OK;
+
+ case '\n':
+ /* if lf -> crlf */
+
+ if (!SP->raw_out)
+ x = 0;
+
+ wclrtoeol(win);
+
+ if (++y > win->_bmarg)
+ {
+ y--;
+
+ if (wscrl(win, 1) == ERR)
+ return ERR;
+ }
+
+ break;
+
+ case '\b':
+ /* don't back over left margin */
+
+ if (--x < 0)
+ case '\r':
+ x = 0;
+
+ break;
+
+ case 0x7f:
+ if (waddch(win, attr | '^') == ERR)
+ return ERR;
+
+ return waddch(win, attr | '?');
+
+ default:
+ /* handle control chars */
+
+ if (waddch(win, attr | '^') == ERR)
+ return ERR;
+
+ return waddch(win, ch + '@');
+ }
+ }
+ else
+ {
+ /* If the incoming character doesn't have its own attribute,
+ then use the current attributes for the window. If it has
+ attributes but not a color component, OR the attributes to
+ the current attributes for the window. If it has a color
+ component, use the attributes solely from the incoming
+ character. */
+
+ if (!(attr & A_COLOR))
+ attr |= win->_attrs;
+
+ /* wrs (4/10/93): Apply the same sort of logic for the window
+ background, in that it only takes precedence if other color
+ attributes are not there and that the background character
+ will only print if the printing character is blank. */
+
+ if (!(attr & A_COLOR))
+ attr |= win->_bkgd & A_ATTRIBUTES;
+ else
+ attr |= win->_bkgd & (A_ATTRIBUTES ^ A_COLOR);
+
+ if (text == ' ')
+ text = win->_bkgd & A_CHARTEXT;
+
+ /* Add the attribute back into the character. */
+
+ text |= attr;
+
+ /* Only change _firstch/_lastch if the character to be added is
+ different from the character/attribute that is already in
+ that position in the window. */
+
+ if (win->_y[y][x] != text)
+ {
+ if (win->_firstch[y] == _NO_CHANGE)
+ win->_firstch[y] = win->_lastch[y] = x;
+ else
+ if (x < win->_firstch[y])
+ win->_firstch[y] = x;
+ else
+ if (x > win->_lastch[y])
+ win->_lastch[y] = x;
+
+ win->_y[y][x] = text;
+ }
+
+ if (++x >= win->_maxx)
+ {
+ /* wrap around test */
+
+ x = 0;
+
+ if (++y > win->_bmarg)
+ {
+ y--;
+
+ if (wscrl(win, 1) == ERR)
+ {
+ PDC_sync(win);
+ return ERR;
+ }
+ }
+ }
+ }
+
+ win->_curx = x;
+ win->_cury = y;
+
+ if (win->_immed)
+ wrefresh(win);
+ if (win->_sync)
+ wsyncup(win);
+
+ return OK;
+}
+
+int addch(const chtype ch)
+{
+ PDC_LOG(("addch() - called: ch=%x\n", ch));
+
+ return waddch(stdscr, ch);
+}
+
+int mvaddch(int y, int x, const chtype ch)
+{
+ PDC_LOG(("mvaddch() - called: y=%d x=%d ch=%x\n", y, x, ch));
+
+ if (move(y,x) == ERR)
+ return ERR;
+
+ return waddch(stdscr, ch);
+}
+
+int mvwaddch(WINDOW *win, int y, int x, const chtype ch)
+{
+ PDC_LOG(("mvwaddch() - called: win=%p y=%d x=%d ch=%d\n", win, y, x, ch));
+
+ if (wmove(win, y, x) == ERR)
+ return ERR;
+
+ return waddch(win, ch);
+}
+
+int echochar(const chtype ch)
+{
+ PDC_LOG(("echochar() - called: ch=%x\n", ch));
+
+ return wechochar(stdscr, ch);
+}
+
+int wechochar(WINDOW *win, const chtype ch)
+{
+ PDC_LOG(("wechochar() - called: win=%p ch=%x\n", win, ch));
+
+ if (waddch(win, ch) == ERR)
+ return ERR;
+
+ return wrefresh(win);
+}
+
+int waddrawch(WINDOW *win, chtype ch)
+{
+ PDC_LOG(("waddrawch() - called: win=%p ch=%x (text=%c attr=0x%x)\n",
+ win, ch, ch & A_CHARTEXT, ch & A_ATTRIBUTES));
+
+ if ((ch & A_CHARTEXT) < ' ' || (ch & A_CHARTEXT) == 0x7f)
+ ch |= A_ALTCHARSET;
+
+ return waddch(win, ch);
+}
+
+int addrawch(chtype ch)
+{
+ PDC_LOG(("addrawch() - called: ch=%x\n", ch));
+
+ return waddrawch(stdscr, ch);
+}
+
+int mvaddrawch(int y, int x, chtype ch)
+{
+ PDC_LOG(("mvaddrawch() - called: y=%d x=%d ch=%d\n", y, x, ch));
+
+ if (move(y, x) == ERR)
+ return ERR;
+
+ return waddrawch(stdscr, ch);
+}
+
+int mvwaddrawch(WINDOW *win, int y, int x, chtype ch)
+{
+ PDC_LOG(("mvwaddrawch() - called: win=%p y=%d x=%d ch=%d\n",
+ win, y, x, ch));
+
+ if (wmove(win, y, x) == ERR)
+ return ERR;
+
+ return waddrawch(win, ch);
+}
+
+#ifdef PDC_WIDE
+int wadd_wch(WINDOW *win, const cchar_t *wch)
+{
+ PDC_LOG(("wadd_wch() - called: win=%p wch=%x\n", win, *wch));
+
+ return wch ? waddch(win, *wch) : ERR;
+}
+
+int add_wch(const cchar_t *wch)
+{
+ PDC_LOG(("add_wch() - called: wch=%x\n", *wch));
+
+ return wadd_wch(stdscr, wch);
+}
+
+int mvadd_wch(int y, int x, const cchar_t *wch)
+{
+ PDC_LOG(("mvaddch() - called: y=%d x=%d wch=%x\n", y, x, *wch));
+
+ if (move(y,x) == ERR)
+ return ERR;
+
+ return wadd_wch(stdscr, wch);
+}
+
+int mvwadd_wch(WINDOW *win, int y, int x, const cchar_t *wch)
+{
+ PDC_LOG(("mvwaddch() - called: win=%p y=%d x=%d wch=%d\n",
+ win, y, x, *wch));
+
+ if (wmove(win, y, x) == ERR)
+ return ERR;
+
+ return wadd_wch(win, wch);
+}
+
+int echo_wchar(const cchar_t *wch)
+{
+ PDC_LOG(("echo_wchar() - called: wch=%x\n", *wch));
+
+ return wecho_wchar(stdscr, wch);
+}
+
+int wecho_wchar(WINDOW *win, const cchar_t *wch)
+{
+ PDC_LOG(("wecho_wchar() - called: win=%p wch=%x\n", win, *wch));
+
+ if (!wch || (wadd_wch(win, wch) == ERR))
+ return ERR;
+
+ return wrefresh(win);
+}
+#endif