| /* PDCurses */ |
| |
| #include <curspriv.h> |
| |
| /*man-start************************************************************** |
| |
| touch |
| ----- |
| |
| ### Synopsis |
| |
| int touchwin(WINDOW *win); |
| int touchline(WINDOW *win, int start, int count); |
| int untouchwin(WINDOW *win); |
| int wtouchln(WINDOW *win, int y, int n, int changed); |
| bool is_linetouched(WINDOW *win, int line); |
| bool is_wintouched(WINDOW *win); |
| |
| int touchoverlap(const WINDOW *win1, WINDOW *win2); |
| |
| ### Description |
| |
| touchwin() and touchline() throw away all information about which |
| parts of the window have been touched, pretending that the entire |
| window has been drawn on. This is sometimes necessary when using |
| overlapping windows, since a change to one window will affect the |
| other window, but the records of which lines have been changed in the |
| other window will not reflect the change. |
| |
| untouchwin() marks all lines in the window as unchanged since the |
| last call to wrefresh(). |
| |
| wtouchln() makes n lines in the window, starting at line y, look as |
| if they have (changed == 1) or have not (changed == 0) been changed |
| since the last call to wrefresh(). |
| |
| is_linetouched() returns TRUE if the specified line in the specified |
| window has been changed since the last call to wrefresh(). |
| |
| is_wintouched() returns TRUE if the specified window has been changed |
| since the last call to wrefresh(). |
| |
| touchoverlap(win1, win2) marks the portion of win2 which overlaps |
| with win1 as modified. |
| |
| ### Return Value |
| |
| All functions return OK on success and ERR on error except |
| is_wintouched() and is_linetouched(). |
| |
| ### Portability |
| X/Open ncurses NetBSD |
| touchwin Y Y Y |
| touchline Y Y Y |
| untouchwin Y Y Y |
| wtouchln Y Y Y |
| is_linetouched Y Y Y |
| is_wintouched Y Y Y |
| touchoverlap - - Y |
| |
| **man-end****************************************************************/ |
| |
| int touchwin(WINDOW *win) |
| { |
| int i; |
| |
| PDC_LOG(("touchwin() - called: Win=%x\n", win)); |
| |
| if (!win) |
| return ERR; |
| |
| for (i = 0; i < win->_maxy; i++) |
| { |
| win->_firstch[i] = 0; |
| win->_lastch[i] = win->_maxx - 1; |
| } |
| |
| return OK; |
| } |
| |
| int touchline(WINDOW *win, int start, int count) |
| { |
| int i; |
| |
| PDC_LOG(("touchline() - called: win=%p start %d count %d\n", |
| win, start, count)); |
| |
| if (!win || start > win->_maxy || start + count > win->_maxy) |
| return ERR; |
| |
| for (i = start; i < start + count; i++) |
| { |
| win->_firstch[i] = 0; |
| win->_lastch[i] = win->_maxx - 1; |
| } |
| |
| return OK; |
| } |
| |
| int untouchwin(WINDOW *win) |
| { |
| int i; |
| |
| PDC_LOG(("untouchwin() - called: win=%p", win)); |
| |
| if (!win) |
| return ERR; |
| |
| for (i = 0; i < win->_maxy; i++) |
| { |
| win->_firstch[i] = _NO_CHANGE; |
| win->_lastch[i] = _NO_CHANGE; |
| } |
| |
| return OK; |
| } |
| |
| int wtouchln(WINDOW *win, int y, int n, int changed) |
| { |
| int i; |
| |
| PDC_LOG(("wtouchln() - called: win=%p y=%d n=%d changed=%d\n", |
| win, y, n, changed)); |
| |
| if (!win || y > win->_maxy || y + n > win->_maxy) |
| return ERR; |
| |
| for (i = y; i < y + n; i++) |
| { |
| if (changed) |
| { |
| win->_firstch[i] = 0; |
| win->_lastch[i] = win->_maxx - 1; |
| } |
| else |
| { |
| win->_firstch[i] = _NO_CHANGE; |
| win->_lastch[i] = _NO_CHANGE; |
| } |
| } |
| |
| return OK; |
| } |
| |
| bool is_linetouched(WINDOW *win, int line) |
| { |
| PDC_LOG(("is_linetouched() - called: win=%p line=%d\n", win, line)); |
| |
| if (!win || line > win->_maxy || line < 0) |
| return FALSE; |
| |
| return (win->_firstch[line] != _NO_CHANGE) ? TRUE : FALSE; |
| } |
| |
| bool is_wintouched(WINDOW *win) |
| { |
| int i; |
| |
| PDC_LOG(("is_wintouched() - called: win=%p\n", win)); |
| |
| if (win) |
| for (i = 0; i < win->_maxy; i++) |
| if (win->_firstch[i] != _NO_CHANGE) |
| return TRUE; |
| |
| return FALSE; |
| } |
| |
| int touchoverlap(const WINDOW *win1, WINDOW *win2) |
| { |
| int y, endy, endx, starty, startx; |
| |
| PDC_LOG(("touchoverlap() - called: win1=%p win2=%p\n", win1, win2)); |
| |
| if (!win1 || !win2) |
| return ERR; |
| |
| starty = max(win1->_begy, win2->_begy); |
| startx = max(win1->_begx, win2->_begx); |
| endy = min(win1->_maxy + win1->_begy, win2->_maxy + win2->_begy); |
| endx = min(win1->_maxx + win1->_begx, win2->_maxx + win2->_begx); |
| |
| if (starty >= endy || startx >= endx) |
| return OK; |
| |
| starty -= win2->_begy; |
| startx -= win2->_begx; |
| endy -= win2->_begy; |
| endx -= win2->_begx; |
| endx -= 1; |
| |
| for (y = starty; y < endy; y++) |
| { |
| win2->_firstch[y] = startx; |
| win2->_lastch[y] = endx; |
| } |
| |
| return OK; |
| } |