--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/pdcurses/initscr.c Thu Jul 23 18:07:39 2015 +0300
@@ -0,0 +1,339 @@
+/* Public Domain Curses */
+
+#include <curspriv.h>
+
+RCSID("$Id: initscr.c,v 1.114 2008/07/13 16:08:18 wmcbrine Exp $")
+
+/*man-start**************************************************************
+
+ Name: initscr
+
+ Synopsis:
+ WINDOW *initscr(void);
+ WINDOW *Xinitscr(int argc, char *argv[]);
+ int endwin(void);
+ bool isendwin(void);
+ SCREEN *newterm(const char *type, FILE *outfd, FILE *infd);
+ SCREEN *set_term(SCREEN *new);
+ void delscreen(SCREEN *sp);
+
+ int resize_term(int nlines, int ncols);
+ bool is_termresized(void);
+ const char *curses_version(void);
+
+ Description:
+ initscr() should be the first curses routine called. It will
+ initialize all curses data structures, and arrange that the
+ first call to refresh() will clear the screen. In case of
+ error, initscr() will write a message to standard error and end
+ the program.
+
+ endwin() should be called before exiting or escaping from curses
+ mode temporarily. It will restore tty modes, move the cursor to
+ the lower left corner of the screen and reset the terminal into
+ the proper non-visual mode. To resume curses after a temporary
+ escape, call refresh() or doupdate().
+
+ isendwin() returns TRUE if endwin() has been called without a
+ subsequent refresh, unless SP is NULL.
+
+ In some implementations of curses, newterm() allows the use of
+ multiple terminals. Here, it's just an alternative interface for
+ initscr(). It always returns SP, or NULL.
+
+ delscreen() frees the memory allocated by newterm() or
+ initscr(), since it's not freed by endwin(). This function is
+ usually not needed. In PDCurses, the parameter must be the
+ value of SP, and delscreen() sets SP to NULL.
+
+ set_term() does nothing meaningful in PDCurses, but is included
+ for compatibility with other curses implementations.
+
+ resize_term() is effectively two functions: When called with
+ nonzero values for nlines and ncols, it attempts to resize the
+ screen to the given size. When called with (0, 0), it merely
+ adjusts the internal structures to match the current size after
+ the screen is resized by the user. On the currently supported
+ platforms, this functionality is mutually exclusive: X11 allows
+ user resizing, while DOS, OS/2 and Win32 allow programmatic
+ resizing. If you want to support user resizing, you should check
+ for getch() returning KEY_RESIZE, and/or call is_termresized()
+ at appropriate times; if either condition occurs, call
+ resize_term(0, 0). Then, with either user or programmatic
+ resizing, you'll have to resize any windows you've created, as
+ appropriate; resize_term() only handles stdscr and curscr.
+
+ is_termresized() returns TRUE if the curses screen has been
+ resized by the user, and a call to resize_term() is needed.
+ Checking for KEY_RESIZE is generally preferable, unless you're
+ not handling the keyboard.
+
+ curses_version() returns a string describing the version of
+ PDCurses.
+
+ Return Value:
+ All functions return NULL on error, except endwin(), which
+ returns ERR on error.
+
+ Portability X/Open BSD SYS V
+ initscr Y Y Y
+ endwin Y Y Y
+ isendwin Y - 3.0
+ newterm Y - Y
+ set_term Y - Y
+ delscreen Y - 4.0
+ resize_term - - -
+ is_termresized - - -
+ curses_version - - -
+
+**man-end****************************************************************/
+
+#include <stdlib.h>
+
+char ttytype[128];
+
+const char *_curses_notice = "PDCurses 3.4 - Public Domain 2008";
+
+SCREEN *SP = (SCREEN*)NULL; /* curses variables */
+WINDOW *curscr = (WINDOW *)NULL; /* the current screen image */
+WINDOW *stdscr = (WINDOW *)NULL; /* the default screen window */
+WINDOW *pdc_lastscr = (WINDOW *)NULL; /* the last screen image */
+
+int LINES = 0; /* current terminal height */
+int COLS = 0; /* current terminal width */
+int TABSIZE = 8;
+
+MOUSE_STATUS Mouse_status, pdc_mouse_status;
+
+extern RIPPEDOFFLINE linesripped[5];
+extern char linesrippedoff;
+
+WINDOW *Xinitscr(int argc, char *argv[])
+{
+ int i;
+
+ PDC_LOG(("Xinitscr() - called\n"));
+
+ if (SP && SP->alive)
+ return NULL;
+
+ if (PDC_scr_open(argc, argv) == ERR)
+ {
+ fprintf(stderr, "initscr(): Unable to create SP\n");
+ exit(8);
+ }
+
+ SP->autocr = TRUE; /* cr -> lf by default */
+ SP->raw_out = FALSE; /* tty I/O modes */
+ SP->raw_inp = FALSE; /* tty I/O modes */
+ SP->cbreak = TRUE;
+ SP->save_key_modifiers = FALSE;
+ SP->return_key_modifiers = FALSE;
+ SP->echo = TRUE;
+ SP->visibility = 1;
+ SP->resized = FALSE;
+ SP->_trap_mbe = 0L;
+ SP->_map_mbe_to_key = 0L;
+ SP->linesrippedoff = 0;
+ SP->linesrippedoffontop = 0;
+ SP->delaytenths = 0;
+ SP->line_color = -1;
+
+ SP->orig_cursor = PDC_get_cursor_mode();
+
+ LINES = SP->lines;
+ COLS = SP->cols;
+
+ if (LINES < 2 || COLS < 2)
+ {
+ fprintf(stderr, "initscr(): LINES=%d COLS=%d: too small.\n",
+ LINES, COLS);
+ exit(4);
+ }
+
+ if ((curscr = newwin(LINES, COLS, 0, 0)) == (WINDOW *)NULL)
+ {
+ fprintf(stderr, "initscr(): Unable to create curscr.\n");
+ exit(2);
+ }
+
+ if ((pdc_lastscr = newwin(LINES, COLS, 0, 0)) == (WINDOW *)NULL)
+ {
+ fprintf(stderr, "initscr(): Unable to create pdc_lastscr.\n");
+ exit(2);
+ }
+
+ wattrset(pdc_lastscr, (chtype)(-1));
+ werase(pdc_lastscr);
+
+ PDC_slk_initialize();
+ LINES -= SP->slklines;
+
+ /* We have to sort out ripped off lines here, and reduce the height
+ of stdscr by the number of lines ripped off */
+
+ for (i = 0; i < linesrippedoff; i++)
+ {
+ if (linesripped[i].line < 0)
+ (*linesripped[i].init)(newwin(1, COLS, LINES - 1, 0), COLS);
+ else
+ (*linesripped[i].init)(newwin(1, COLS,
+ SP->linesrippedoffontop++, 0), COLS);
+
+ SP->linesrippedoff++;
+ LINES--;
+ }
+
+ linesrippedoff = 0;
+
+ if (!(stdscr = newwin(LINES, COLS, SP->linesrippedoffontop, 0)))
+ {
+ fprintf(stderr, "initscr(): Unable to create stdscr.\n");
+ exit(1);
+ }
+
+ wclrtobot(stdscr);
+
+ /* If preserving the existing screen, don't allow a screen clear */
+
+ if (SP->_preserve)
+ {
+ untouchwin(curscr);
+ untouchwin(stdscr);
+ stdscr->_clear = FALSE;
+ curscr->_clear = FALSE;
+ }
+ else
+ curscr->_clear = TRUE;
+
+ PDC_init_atrtab(); /* set up default colors */
+
+ MOUSE_X_POS = MOUSE_Y_POS = -1;
+ BUTTON_STATUS(1) = BUTTON_RELEASED;
+ BUTTON_STATUS(2) = BUTTON_RELEASED;
+ BUTTON_STATUS(3) = BUTTON_RELEASED;
+ Mouse_status.changes = 0;
+
+ SP->alive = TRUE;
+
+ def_shell_mode();
+
+ sprintf(ttytype, "pdcurses|PDCurses for %s", PDC_sysname());
+
+ return stdscr;
+}
+
+WINDOW *initscr(void)
+{
+ PDC_LOG(("initscr() - called\n"));
+
+ return Xinitscr(0, NULL);
+}
+
+int endwin(void)
+{
+ PDC_LOG(("endwin() - called\n"));
+
+ /* Allow temporary exit from curses using endwin() */
+
+ def_prog_mode();
+ PDC_scr_close();
+
+ SP->alive = FALSE;
+
+ return OK;
+}
+
+bool isendwin(void)
+{
+ PDC_LOG(("isendwin() - called\n"));
+
+ return SP ? !(SP->alive) : FALSE;
+}
+
+SCREEN *newterm(const char *type, FILE *outfd, FILE *infd)
+{
+ PDC_LOG(("newterm() - called\n"));
+
+ return Xinitscr(0, NULL) ? SP : NULL;
+}
+
+SCREEN *set_term(SCREEN *new)
+{
+ PDC_LOG(("set_term() - called\n"));
+
+ /* We only support one screen */
+
+ return (new == SP) ? SP : NULL;
+}
+
+void delscreen(SCREEN *sp)
+{
+ PDC_LOG(("delscreen() - called\n"));
+
+ if (sp != SP)
+ return;
+
+ PDC_slk_free(); /* free the soft label keys, if needed */
+
+ delwin(stdscr);
+ delwin(curscr);
+ delwin(pdc_lastscr);
+ stdscr = (WINDOW *)NULL;
+ curscr = (WINDOW *)NULL;
+ pdc_lastscr = (WINDOW *)NULL;
+
+ SP->alive = FALSE;
+
+ PDC_scr_free(); /* free SP and pdc_atrtab */
+
+ SP = (SCREEN *)NULL;
+}
+
+int resize_term(int nlines, int ncols)
+{
+ PDC_LOG(("resize_term() - called: nlines %d\n", nlines));
+
+ if (!stdscr || PDC_resize_screen(nlines, ncols) == ERR)
+ return ERR;
+
+ SP->lines = PDC_get_rows();
+ LINES = SP->lines - SP->linesrippedoff - SP->slklines;
+ SP->cols = COLS = PDC_get_columns();
+
+ if (wresize(curscr, SP->lines, SP->cols) == ERR ||
+ wresize(stdscr, LINES, COLS) == ERR ||
+ wresize(pdc_lastscr, SP->lines, SP->cols) == ERR)
+ return ERR;
+
+ werase(pdc_lastscr);
+ curscr->_clear = TRUE;
+
+ if (SP->slk_winptr)
+ {
+ if (wresize(SP->slk_winptr, SP->slklines, COLS) == ERR)
+ return ERR;
+
+ wmove(SP->slk_winptr, 0, 0);
+ wclrtobot(SP->slk_winptr);
+ PDC_slk_initialize();
+ slk_noutrefresh();
+ }
+
+ touchwin(stdscr);
+ wnoutrefresh(stdscr);
+
+ return OK;
+}
+
+bool is_termresized(void)
+{
+ PDC_LOG(("is_termresized() - called\n"));
+
+ return SP->resized;
+}
+
+const char *curses_version(void)
+{
+ return _curses_notice;
+}