--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/pdcurses/window.c Thu Jul 23 18:07:39 2015 +0300
@@ -0,0 +1,562 @@
+/* Public Domain Curses */
+
+#include <curspriv.h>
+
+RCSID("$Id: window.c,v 1.62 2008/07/13 16:08:18 wmcbrine Exp $")
+
+/*man-start**************************************************************
+
+ Name: window
+
+ Synopsis:
+ WINDOW *newwin(int nlines, int ncols, int begy, int begx);
+ WINDOW *derwin(WINDOW* orig, int nlines, int ncols,
+ int begy, int begx);
+ WINDOW *subwin(WINDOW* orig, int nlines, int ncols,
+ int begy, int begx);
+ WINDOW *dupwin(WINDOW *win);
+ int delwin(WINDOW *win);
+ int mvwin(WINDOW *win, int y, int x);
+ int mvderwin(WINDOW *win, int pary, int parx);
+ int syncok(WINDOW *win, bool bf);
+ void wsyncup(WINDOW *win);
+ void wcursyncup(WINDOW *win);
+ void wsyncdown(WINDOW *win);
+
+ WINDOW *resize_window(WINDOW *win, int nlines, int ncols);
+ int wresize(WINDOW *win, int nlines, int ncols);
+ WINDOW *PDC_makelines(WINDOW *win);
+ WINDOW *PDC_makenew(int nlines, int ncols, int begy, int begx);
+ void PDC_sync(WINDOW *win);
+
+ Description:
+ newwin() creates a new window with the given number of lines,
+ nlines and columns, ncols. The upper left corner of the window
+ is at line begy, column begx. If nlines is zero, it defaults to
+ LINES - begy; ncols to COLS - begx. Create a new full-screen
+ window by calling newwin(0, 0, 0, 0).
+
+ delwin() deletes the named window, freeing all associated
+ memory. In the case of overlapping windows, subwindows should be
+ deleted before the main window.
+
+ mvwin() moves the window so that the upper left-hand corner is
+ at position (y,x). If the move would cause the window to be off
+ the screen, it is an error and the window is not moved. Moving
+ subwindows is allowed.
+
+ subwin() creates a new subwindow within a window. The
+ dimensions of the subwindow are nlines lines and ncols columns.
+ The subwindow is at position (begy, begx) on the screen. This
+ position is relative to the screen, and not to the window orig.
+ Changes made to either window will affect both. When using this
+ routine, you will often need to call touchwin() before calling
+ wrefresh().
+
+ derwin() is the same as subwin(), except that begy and begx are
+ relative to the origin of the window orig rather than the
+ screen. There is no difference between subwindows and derived
+ windows.
+
+ mvderwin() moves a derived window (or subwindow) inside its
+ parent window. The screen-relative parameters of the window are
+ not changed. This routine is used to display different parts of
+ the parent window at the same physical position on the screen.
+
+ dupwin() creates an exact duplicate of the window win.
+
+ wsyncup() causes a touchwin() of all of the window's parents.
+
+ If wsyncok() is called with a second argument of TRUE, this
+ causes a wsyncup() to be called every time the window is
+ changed.
+
+ wcursyncup() causes the current cursor position of all of a
+ window's ancestors to reflect the current cursor position of the
+ current window.
+
+ wsyncdown() causes a touchwin() of the current window if any of
+ its parent's windows have been touched.
+
+ resize_window() allows the user to resize an existing window. It
+ returns the pointer to the new window, or NULL on failure.
+
+ wresize() is an ncurses-compatible wrapper for resize_window().
+ Note that, unlike ncurses, it will NOT process any subwindows of
+ the window. (However, you still can call it _on_ subwindows.) It
+ returns OK or ERR.
+
+ PDC_makenew() allocates all data for a new WINDOW * except the
+ actual lines themselves. If it's unable to allocate memory for
+ the window structure, it will free all allocated memory and
+ return a NULL pointer.
+
+ PDC_makelines() allocates the memory for the lines.
+
+ PDC_sync() handles wrefresh() and wsyncup() calls when a window
+ is changed.
+
+ Return Value:
+ newwin(), subwin(), derwin() and dupwin() return a pointer
+ to the new window, or NULL on failure. delwin(), mvwin(),
+ mvderwin() and syncok() return OK or ERR. wsyncup(),
+ wcursyncup() and wsyncdown() return nothing.
+
+ Errors:
+ It is an error to call resize_window() before calling initscr().
+ Also, an error will be generated if we fail to create a newly
+ sized replacement window for curscr, or stdscr. This could
+ happen when increasing the window size. NOTE: If this happens,
+ the previously successfully allocated windows are left alone;
+ i.e., the resize is NOT cancelled for those windows.
+
+ Portability X/Open BSD SYS V
+ newwin Y Y Y
+ delwin Y Y Y
+ mvwin Y Y Y
+ subwin Y Y Y
+ derwin Y - Y
+ mvderwin Y - Y
+ dupwin Y - 4.0
+ wsyncup Y - 4.0
+ syncok Y - 4.0
+ wcursyncup Y - 4.0
+ wsyncdown Y - 4.0
+ resize_window - - -
+ wresize - - -
+ PDC_makelines - - -
+ PDC_makenew - - -
+ PDC_sync - - -
+
+**man-end****************************************************************/
+
+#include <stdlib.h>
+
+WINDOW *PDC_makenew(int nlines, int ncols, int begy, int begx)
+{
+ WINDOW *win;
+
+ PDC_LOG(("PDC_makenew() - called: lines %d cols %d begy %d begx %d\n",
+ nlines, ncols, begy, begx));
+
+ /* allocate the window structure itself */
+
+ if ((win = calloc(1, sizeof(WINDOW))) == (WINDOW *)NULL)
+ return win;
+
+ /* allocate the line pointer array */
+
+ if ((win->_y = malloc(nlines * sizeof(chtype *))) == NULL)
+ {
+ free(win);
+ return (WINDOW *)NULL;
+ }
+
+ /* allocate the minchng and maxchng arrays */
+
+ if ((win->_firstch = malloc(nlines * sizeof(int))) == NULL)
+ {
+ free(win->_y);
+ free(win);
+ return (WINDOW *)NULL;
+ }
+
+ if ((win->_lastch = malloc(nlines * sizeof(int))) == NULL)
+ {
+ free(win->_firstch);
+ free(win->_y);
+ free(win);
+ return (WINDOW *)NULL;
+ }
+
+ /* initialize window variables */
+
+ win->_maxy = nlines; /* real max screen size */
+ win->_maxx = ncols; /* real max screen size */
+ win->_begy = begy;
+ win->_begx = begx;
+ win->_bkgd = ' '; /* wrs 4/10/93 -- initialize background to blank */
+ win->_clear = (bool) ((nlines == LINES) && (ncols == COLS));
+ win->_bmarg = nlines - 1;
+ win->_parx = win->_pary = -1;
+
+ /* init to say window all changed */
+
+ touchwin(win);
+
+ return win;
+}
+
+WINDOW *PDC_makelines(WINDOW *win)
+{
+ int i, j, nlines, ncols;
+
+ PDC_LOG(("PDC_makelines() - called: lines %d cols %d\n", nlines, ncols));
+
+ if (!win)
+ return (WINDOW *)NULL;
+
+ nlines = win->_maxy;
+ ncols = win->_maxx;
+
+ for (i = 0; i < nlines; i++)
+ {
+ if ((win->_y[i] = malloc(ncols * sizeof(chtype))) == NULL)
+ {
+ /* if error, free all the data */
+
+ for (j = 0; j < i; j++)
+ free(win->_y[j]);
+
+ free(win->_firstch);
+ free(win->_lastch);
+ free(win->_y);
+ free(win);
+
+ return (WINDOW *)NULL;
+ }
+ }
+
+ return win;
+}
+
+void PDC_sync(WINDOW *win)
+{
+ PDC_LOG(("PDC_sync() - called:\n"));
+
+ if (win->_immed)
+ wrefresh(win);
+ if (win->_sync)
+ wsyncup(win);
+}
+
+WINDOW *newwin(int nlines, int ncols, int begy, int begx)
+{
+ WINDOW *win;
+
+ PDC_LOG(("newwin() - called:lines=%d cols=%d begy=%d begx=%d\n",
+ nlines, ncols, begy, begx));
+
+ if (!nlines)
+ nlines = LINES - begy;
+ if (!ncols)
+ ncols = COLS - begx;
+
+ if ( (begy + nlines > SP->lines || begx + ncols > SP->cols)
+ || !(win = PDC_makenew(nlines, ncols, begy, begx))
+ || !(win = PDC_makelines(win)) )
+ return (WINDOW *)NULL;
+
+ werase(win);
+
+ return win;
+}
+
+int delwin(WINDOW *win)
+{
+ int i;
+
+ PDC_LOG(("delwin() - called\n"));
+
+ if (!win)
+ return ERR;
+
+ /* subwindows use parents' lines */
+
+ if (!(win->_flags & (_SUBWIN|_SUBPAD)))
+ for (i = 0; i < win->_maxy && win->_y[i]; i++)
+ if (win->_y[i])
+ free(win->_y[i]);
+
+ free(win->_firstch);
+ free(win->_lastch);
+ free(win->_y);
+ free(win);
+
+ return OK;
+}
+
+int mvwin(WINDOW *win, int y, int x)
+{
+ PDC_LOG(("mvwin() - called\n"));
+
+ if (!win || (y + win->_maxy > LINES || y < 0)
+ || (x + win->_maxx > COLS || x < 0))
+ return ERR;
+
+ win->_begy = y;
+ win->_begx = x;
+ touchwin(win);
+
+ return OK;
+}
+
+WINDOW *subwin(WINDOW *orig, int nlines, int ncols, int begy, int begx)
+{
+ WINDOW *win;
+ int i;
+ int j = begy - orig->_begy;
+ int k = begx - orig->_begx;
+
+ PDC_LOG(("subwin() - called: lines %d cols %d begy %d begx %d\n",
+ nlines, ncols, begy, begx));
+
+ /* make sure window fits inside the original one */
+
+ if (!orig || (begy < orig->_begy) || (begx < orig->_begx) ||
+ (begy + nlines) > (orig->_begy + orig->_maxy) ||
+ (begx + ncols) > (orig->_begx + orig->_maxx))
+ return (WINDOW *)NULL;
+
+ if (!nlines)
+ nlines = orig->_maxy - 1 - j;
+ if (!ncols)
+ ncols = orig->_maxx - 1 - k;
+
+ if ( !(win = PDC_makenew(nlines, ncols, begy, begx)) )
+ return (WINDOW *)NULL;
+
+ /* initialize window variables */
+
+ win->_attrs = orig->_attrs;
+ win->_bkgd = orig->_bkgd;
+ win->_leaveit = orig->_leaveit;
+ win->_scroll = orig->_scroll;
+ win->_nodelay = orig->_nodelay;
+ win->_use_keypad = orig->_use_keypad;
+ win->_immed = orig->_immed;
+ win->_sync = orig->_sync;
+ win->_pary = j;
+ win->_parx = k;
+ win->_parent = orig;
+
+ for (i = 0; i < nlines; i++, j++)
+ win->_y[i] = orig->_y[j] + k;
+
+ win->_flags |= _SUBWIN;
+
+ return win;
+}
+
+WINDOW *derwin(WINDOW *orig, int nlines, int ncols, int begy, int begx)
+{
+ return subwin(orig, nlines, ncols, begy + orig->_begy, begx + orig->_begx);
+}
+
+int mvderwin(WINDOW *win, int pary, int parx)
+{
+ int i, j;
+ WINDOW *mypar;
+
+ if (!win || !(win->_parent))
+ return ERR;
+
+ mypar = win->_parent;
+
+ if (pary < 0 || parx < 0 || (pary + win->_maxy) > mypar->_maxy ||
+ (parx + win->_maxx) > mypar->_maxx)
+ return ERR;
+
+ j = pary;
+
+ for (i = 0; i < win->_maxy; i++)
+ win->_y[i] = (mypar->_y[j++]) + parx;
+
+ win->_pary = pary;
+ win->_parx = parx;
+
+ return OK;
+}
+
+WINDOW *dupwin(WINDOW *win)
+{
+ WINDOW *new;
+ chtype *ptr, *ptr1;
+ int nlines, ncols, begy, begx, i;
+
+ if (!win)
+ return (WINDOW *)NULL;
+
+ nlines = win->_maxy;
+ ncols = win->_maxx;
+ begy = win->_begy;
+ begx = win->_begx;
+
+ if ( !(new = PDC_makenew(nlines, ncols, begy, begx))
+ || !(new = PDC_makelines(new)) )
+ return (WINDOW *)NULL;
+
+ /* copy the contents of win into new */
+
+ for (i = 0; i < nlines; i++)
+ {
+ for (ptr = new->_y[i], ptr1 = win->_y[i];
+ ptr < new->_y[i] + ncols; ptr++, ptr1++)
+ *ptr = *ptr1;
+
+ new->_firstch[i] = 0;
+ new->_lastch[i] = ncols - 1;
+ }
+
+ new->_curx = win->_curx;
+ new->_cury = win->_cury;
+ new->_maxy = win->_maxy;
+ new->_maxx = win->_maxx;
+ new->_begy = win->_begy;
+ new->_begx = win->_begx;
+ new->_flags = win->_flags;
+ new->_attrs = win->_attrs;
+ new->_clear = win->_clear;
+ new->_leaveit = win->_leaveit;
+ new->_scroll = win->_scroll;
+ new->_nodelay = win->_nodelay;
+ new->_use_keypad = win->_use_keypad;
+ new->_tmarg = win->_tmarg;
+ new->_bmarg = win->_bmarg;
+ new->_parx = win->_parx;
+ new->_pary = win->_pary;
+ new->_parent = win->_parent;
+ new->_bkgd = win->_bkgd;
+ new->_flags = win->_flags;
+
+ return new;
+}
+
+WINDOW *resize_window(WINDOW *win, int nlines, int ncols)
+{
+ WINDOW *new;
+ int i, save_cury, save_curx, new_begy, new_begx;
+
+ PDC_LOG(("resize_window() - called: nlines %d ncols %d\n",
+ nlines, ncols));
+
+ if (!win)
+ return (WINDOW *)NULL;
+
+ if (win->_flags & _SUBPAD)
+ {
+ if ( !(new = subpad(win->_parent, nlines, ncols,
+ win->_begy, win->_begx)) )
+ return (WINDOW *)NULL;
+ }
+ else if (win->_flags & _SUBWIN)
+ {
+ if ( !(new = subwin(win->_parent, nlines, ncols,
+ win->_begy, win->_begx)) )
+ return (WINDOW *)NULL;
+ }
+ else
+ {
+ if (win == SP->slk_winptr)
+ {
+ new_begy = SP->lines - SP->slklines;
+ new_begx = 0;
+ }
+ else
+ {
+ new_begy = win->_begy;
+ new_begx = win->_begx;
+ }
+
+ if ( !(new = PDC_makenew(nlines, ncols, new_begy, new_begx)) )
+ return (WINDOW *)NULL;
+ }
+
+ save_curx = min(win->_curx, new->_maxx);
+ save_cury = min(win->_cury, new->_maxy);
+
+ if (!(win->_flags & (_SUBPAD|_SUBWIN)))
+ {
+ if ( !(new = PDC_makelines(new)) )
+ return (WINDOW *)NULL;
+
+ werase(new);
+
+ copywin(win, new, 0, 0, 0, 0, min(win->_maxy, new->_maxy) - 1,
+ min(win->_maxx, new->_maxx) - 1, FALSE);
+
+ for (i = 0; i < win->_maxy && win->_y[i]; i++)
+ if (win->_y[i])
+ free(win->_y[i]);
+ }
+
+ new->_flags = win->_flags;
+ new->_attrs = win->_attrs;
+ new->_clear = win->_clear;
+ new->_leaveit = win->_leaveit;
+ new->_scroll = win->_scroll;
+ new->_nodelay = win->_nodelay;
+ new->_use_keypad = win->_use_keypad;
+ new->_tmarg = (win->_tmarg > new->_maxy - 1) ? 0 : win->_tmarg;
+ new->_bmarg = (win->_bmarg == win->_maxy - 1) ?
+ new->_maxy - 1 : min(win->_bmarg, (new->_maxy - 1));
+ new->_parent = win->_parent;
+ new->_immed = win->_immed;
+ new->_sync = win->_sync;
+ new->_bkgd = win->_bkgd;
+
+ new->_curx = save_curx;
+ new->_cury = save_cury;
+
+ free(win->_firstch);
+ free(win->_lastch);
+ free(win->_y);
+
+ *win = *new;
+ free(new);
+
+ return win;
+}
+
+int wresize(WINDOW *win, int nlines, int ncols)
+{
+ return (resize_window(win, nlines, ncols) ? OK : ERR);
+}
+
+void wsyncup(WINDOW *win)
+{
+ WINDOW *tmp;
+
+ PDC_LOG(("wsyncup() - called\n"));
+
+ for (tmp = win; tmp; tmp = tmp->_parent)
+ touchwin(tmp);
+}
+
+int syncok(WINDOW *win, bool bf)
+{
+ PDC_LOG(("syncok() - called\n"));
+
+ if (!win)
+ return ERR;
+
+ win->_sync = bf;
+
+ return OK;
+}
+
+void wcursyncup(WINDOW *win)
+{
+ WINDOW *tmp;
+
+ PDC_LOG(("wcursyncup() - called\n"));
+
+ for (tmp = win; tmp && tmp->_parent; tmp = tmp->_parent)
+ wmove(tmp->_parent, tmp->_pary + tmp->_cury, tmp->_parx + tmp->_curx);
+}
+
+void wsyncdown(WINDOW *win)
+{
+ WINDOW *tmp;
+
+ PDC_LOG(("wsyncdown() - called\n"));
+
+ for (tmp = win; tmp; tmp = tmp->_parent)
+ {
+ if (is_wintouched(tmp))
+ {
+ touchwin(win);
+ break;
+ }
+ }
+}