X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=c%2B%2B%2Fcursesw.cc;h=47e5cf64dcf0ded1e7ca1d88f1ed69cc2ae8fbfb;hp=4072c3c3f6930b6bf139b7a11c4b5e12575eef9c;hb=c340bf75caa7aabe7db96787961e151e70ddff08;hpb=0eb88fc5281804773e2a0c7a488a4452463535ce diff --git a/c++/cursesw.cc b/c++/cursesw.cc index 4072c3c3..47e5cf64 100644 --- a/c++/cursesw.cc +++ b/c++/cursesw.cc @@ -1,87 +1,109 @@ // * this is for making emacs happy: -*-Mode: C++;-*- +/**************************************************************************** + * Copyright (c) 2007-2008,2009 Free Software Foundation, Inc. * + * * + * Permission is hereby granted, free of charge, to any person obtaining a * + * copy of this software and associated documentation files (the * + * "Software"), to deal in the Software without restriction, including * + * without limitation the rights to use, copy, modify, merge, publish, * + * distribute, distribute with modifications, sublicense, and/or sell * + * copies of the Software, and to permit persons to whom the Software is * + * furnished to do so, subject to the following conditions: * + * * + * The above copyright notice and this permission notice shall be included * + * in all copies or substantial portions of the Software. * + * * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * + * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * + * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * + * * + * Except as contained in this notice, the name(s) of the above copyright * + * holders shall not be used in advertising or otherwise to promote the * + * sale, use or other dealings in this Software without prior written * + * authorization. * + ****************************************************************************/ /* - Copyright (C) 1989 Free Software Foundation - written by Eric Newton (newton@rocky.oswego.edu) - - This file is part of the GNU C++ Library. This library is free - software; you can redistribute it and/or modify it under the terms of - the GNU Library General Public License as published by the Free - Software Foundation; either version 2 of the License, or (at your - option) any later version. This library is distributed in the hope - that it will be useful, but WITHOUT ANY WARRANTY; without even the - implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR - PURPOSE. See the GNU Library General Public License for more details. - You should have received a copy of the GNU Library General Public - License along with this library; if not, write to the Free Software - Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. - - modified by Ulrich Drepper (drepper@karlsruhe.gmd.de) - and Anatoly Ivasyuk (anatoly@nick.csh.rit.edu) - - modified by Juergen Pfeifer (juergen.pfeifer@gmx.net) -*/ + * Authors: + * Thomas E. Dickey + * Juergen Pfeifer + * + * The NCursesWindow class was originally based on a file written by + * Eric Newton, later modified by Ulrich Drepper and Anatoly Ivasyuk. + * However, aside from the compatible interface definition, no trace + * of the original code remains in this version: it consists only of + * changes introduced since 1995. + */ -#include "cursesw.h" #include "internal.h" +#include "cursesw.h" -MODULE_ID("$Id: cursesw.cc,v 1.15 1999/09/11 23:26:29 tom Exp $") +MODULE_ID("$Id: cursesw.cc,v 1.51 2009/03/28 21:31:37 tom Exp $") #define COLORS_NEED_INITIALIZATION -1 #define COLORS_NOT_INITIALIZED 0 #define COLORS_MONOCHROME 1 #define COLORS_ARE_REALLY_THERE 2 +#define HaveColors() (colorInitialized == COLORS_ARE_REALLY_THERE) + // declare static variables for the class long NCursesWindow::count = 0L; bool NCursesWindow::b_initialized = FALSE; -#if defined(__GNUG__) -# ifndef _IO_va_list -# define _IO_va_list char * -# endif -#endif - int NCursesWindow::scanw(const char* fmt, ...) { -#if defined(__GNUG__) + int result = ERR; + va_list args; va_start(args, fmt); - char buf[BUFSIZ]; - int result = wgetstr(w, buf); - if (result == OK) { - strstreambuf ss(buf, sizeof(buf)); - result = ss.vscan(fmt, (_IO_va_list)args); - } + result = ::vw_scanw (w, const_cast(fmt), args); va_end(args); + return result; -#else - return ERR; -#endif } int NCursesWindow::scanw(int y, int x, const char* fmt, ...) { -#if defined(__GNUG__) - va_list args; - va_start(args, fmt); - char buf[BUFSIZ]; - int result = wmove(w, y, x); - if (result == OK) { - result = wgetstr(w, buf); - if (result == OK) { - strstreambuf ss(buf, sizeof(buf)); - result = ss.vscan(fmt, (_IO_va_list)args); - } + int result = ERR; + + if (::wmove(w, y, x) != ERR) { + va_list args; + va_start(args, fmt); + result = ::vw_scanw (w, const_cast(fmt), args); + va_end(args); + } + return result; +} + + +int +NCursesWindow::scanw(const char* fmt, va_list args) +{ + int result = ERR; + + result = ::vw_scanw (w, const_cast(fmt), args); + + return result; +} + + +int +NCursesWindow::scanw(int y, int x, const char* fmt, va_list args) +{ + int result = ERR; + + if (::wmove(w, y, x) != ERR) { + result = ::vw_scanw (w, const_cast(fmt), args); } - va_end(args); return result; -#else - return ERR; -#endif } @@ -90,10 +112,9 @@ NCursesWindow::printw(const char * fmt, ...) { va_list args; va_start(args, fmt); - char buf[BUFSIZ]; - vsprintf(buf, fmt, args); + int result = ::vw_printw(w, fmt, args); va_end(args); - return waddstr(w, buf); + return result; } @@ -102,23 +123,39 @@ NCursesWindow::printw(int y, int x, const char * fmt, ...) { va_list args; va_start(args, fmt); - int result = wmove(w, y, x); + int result = ::wmove(w, y, x); if (result == OK) { - char buf[BUFSIZ]; - vsprintf(buf, fmt, args); - result = waddstr(w, buf); + result = ::vw_printw(w, fmt, args); } va_end(args); return result; } +int +NCursesWindow::printw(const char * fmt, va_list args) +{ + int result = ::vw_printw(w, fmt, args); + return result; +} + + +int +NCursesWindow::printw(int y, int x, const char * fmt, va_list args) +{ + int result = ::wmove(w, y, x); + if (result == OK) { + result = ::vw_printw(w, fmt, args); + } + return result; +} + + void -NCursesWindow::init(void) +NCursesWindow::set_keyboard(void) { - leaveok(0); - keypad(1); - meta(1); + keypad(TRUE); + meta(TRUE); } void @@ -128,71 +165,75 @@ NCursesWindow::err_handler(const char *msg) const THROWS(NCursesException) } void -NCursesWindow::initialize() { - if (!b_initialized) { - ::initscr(); - b_initialized = TRUE; - if (colorInitialized==COLORS_NEED_INITIALIZATION) { - colorInitialized=COLORS_NOT_INITIALIZED; - useColors(); +NCursesWindow::initialize() +{ + if (!b_initialized) { + ::initscr(); + b_initialized = TRUE; + if (colorInitialized == COLORS_NEED_INITIALIZATION) { + colorInitialized = COLORS_NOT_INITIALIZED; + useColors(); + } + ::noecho(); + ::cbreak(); } - ::noecho(); - ::cbreak(); - } } -NCursesWindow::NCursesWindow() { - if (!b_initialized) +void +NCursesWindow::constructing() +{ initialize(); + ++count; +} + +NCursesWindow::NCursesWindow() + : w(0), alloced(FALSE), par(0), subwins(0), sib(0) +{ + constructing(); - w = (WINDOW *)0; - init(); - alloced = FALSE; - subwins = par = sib = 0; - count++; + w = static_cast(0); + set_keyboard(); } -NCursesWindow::NCursesWindow(int lines, int cols, int begin_y, int begin_x) +NCursesWindow::NCursesWindow(int nlines, int ncols, int begin_y, int begin_x) + : w(0), alloced(TRUE), par(0), subwins(0), sib(0) { - if (!b_initialized) - initialize(); + constructing(); - w = ::newwin(lines, cols, begin_y, begin_x); + w = ::newwin(nlines, ncols, begin_y, begin_x); if (w == 0) { err_handler("Cannot construct window"); } - init(); - - alloced = TRUE; - subwins = par = sib = 0; - count++; + set_keyboard(); } -NCursesWindow::NCursesWindow(WINDOW* &window) +NCursesWindow::NCursesWindow(WINDOW* window) + : w(0), alloced(FALSE), par(0), subwins(0), sib(0) { - if (!b_initialized) - initialize(); - - w = window; - init(); - alloced = FALSE; - subwins = par = sib = 0; - count++; + constructing(); + + // We used to use a reference on the "window" parameter, but we cannot do + // that with an opaque pointer (see NCURSES_OPAQUE). If the parameter was + // "::stdscr", that is first set via the "constructing() call, and is null + // up to that point. So we allow a null pointer here as meaning the "same" + // as "::stdscr". + w = window ? window : ::stdscr; + set_keyboard(); } -NCursesWindow::NCursesWindow(NCursesWindow& win, int l, int c, +NCursesWindow::NCursesWindow(NCursesWindow& win, int ny, int nx, int begin_y, int begin_x, char absrel) + : w(0), alloced(TRUE), par(0), subwins(0), sib(0) { - if (absrel == 'a') { // absolute origin + constructing(); + if (absrel == 'a') { // absolute origin begin_y -= win.begy(); begin_x -= win.begx(); } - // Even though we treat subwindows as a tree, the standard curses - // library needs the `subwin' call to link to the parent in - // order to correctly perform refreshes, etc. - // Friendly enough, this also works for pads. - w = ::derwin(win.w, l, c, begin_y, begin_x); + // Link this window into its parent's list of subwindows. + // We use derwin(), since this also works for pads. + w = ::derwin(win.w, ny, nx, begin_y, begin_x); if (w == 0) { err_handler("Cannot construct subwindow"); } @@ -200,40 +241,40 @@ NCursesWindow::NCursesWindow(NCursesWindow& win, int l, int c, par = &win; sib = win.subwins; win.subwins = this; - subwins = 0; - alloced = TRUE; - count++; } NCursesWindow::NCursesWindow(NCursesWindow& win, bool do_box NCURSES_PARAM_INIT(TRUE)) + : w(0), alloced(TRUE), par(0), subwins(0), sib(0) { - w = :: derwin(win.w,win.height()-2,win.width()-2,1,1); - if (w == 0) { - err_handler("Cannot construct subwindow"); - } + constructing(); + int myHeight = win.height(); + int myWidth = win.width(); + w = :: derwin(win.w, myHeight - 2, myWidth - 2, 1, 1); + if (w == 0) { + err_handler("Cannot construct subwindow"); + } - par = &win; - sib = win.subwins; - win.subwins = this; - subwins = 0; - alloced = TRUE; - count++; + par = &win; + sib = win.subwins; + win.subwins = this; + subwins = 0; - if (do_box) { - win.box(); - win.touchwin(); - } + if (do_box) { + win.box(); + win.touchwin(); + } } -NCursesWindow NCursesWindow::Clone() { - WINDOW *d = ::dupwin(w); - NCursesWindow W(d); - W.subwins = subwins; - W.sib = sib; - W.par = par; - W.alloced = alloced; - return W; +NCursesWindow NCursesWindow::Clone() +{ + WINDOW *d = ::dupwin(w); + NCursesWindow W(d); + W.subwins = subwins; + W.sib = sib; + W.par = par; + W.alloced = alloced; + return W; } typedef int (*RIPOFFINIT)(NCursesWindow&); @@ -241,60 +282,63 @@ static RIPOFFINIT R_INIT[5]; // There can't be more static int r_init_idx = 0; static RIPOFFINIT* prip = R_INIT; -extern "C" int _nc_ripoffline(int,int (*init)(WINDOW*,int)); - -NCursesWindow::NCursesWindow(WINDOW *win, int cols) { - w = win; - assert((w->_maxx+1)==cols); - alloced = FALSE; - subwins = par = sib = 0; +NCursesWindow::NCursesWindow(WINDOW *win, int ncols) + : w(0), alloced(FALSE), par(0), subwins(0), sib(0) +{ + initialize(); + w = win; } -int NCursesWindow::ripoff_init(WINDOW *w, int cols) +int _nc_xx_ripoff_init(WINDOW *w, int ncols) { - int res = ERR; + int res = ERR; - RIPOFFINIT init = *prip++; - if (init) { - NCursesWindow* W = new NCursesWindow(w,cols); - res = init(*W); - } - return res; + RIPOFFINIT init = *prip++; + if (init) { + res = init(*(new NCursesWindow(w,ncols))); + } + return res; } int NCursesWindow::ripoffline(int ripoff_lines, - int (*init)(NCursesWindow& win)) { - int code = ::_nc_ripoffline(ripoff_lines,ripoff_init); - if (code==OK && init && ripoff_lines) { - R_INIT[r_init_idx++] = init; - } - return code; + int (*init)(NCursesWindow& win)) +{ + int code = ::_nc_ripoffline(ripoff_lines,_nc_xx_ripoff_init); + if (code == OK && init && ripoff_lines) { + R_INIT[r_init_idx++] = init; + } + return code; } bool -NCursesWindow::isDescendant(NCursesWindow& win) { - for (NCursesWindow* p = subwins; p != NULL; p = p->sib) { - if (p==&win) - return TRUE; - else { - if (p->isDescendant(win)) - return TRUE; +NCursesWindow::isDescendant(NCursesWindow& win) +{ + bool result = FALSE; + + for (NCursesWindow* p = subwins; p != NULL; p = p->sib) { + if (p == &win || p->isDescendant(win)) { + result = TRUE; + break; + } } - } - return FALSE; + return result; } void NCursesWindow::kill_subwindows() { - for (NCursesWindow* p = subwins; p != 0; p = p->sib) { + NCursesWindow* p = subwins; + + subwins = 0; + while (p != 0) { + NCursesWindow* q = p->sib; p->kill_subwindows(); if (p->alloced) { if (p->w != 0) ::delwin(p->w); - p->alloced = FALSE; } - p->w = 0; // cause a run-time error if anyone attempts to use... + delete p; + p = q; } } @@ -303,36 +347,34 @@ NCursesWindow::~NCursesWindow() { kill_subwindows(); - if (par != 0) { // Snip us from the parent's list of subwindows. - NCursesWindow * win = par->subwins; - NCursesWindow * trail = 0; - for (;;) { - if (win == 0) - break; - else if (win == this) { - if (trail != 0) - trail->sib = win->sib; - else - par->subwins = win->sib; + if (par != 0) { + // Remove this window from the parent's list of subwindows. + NCursesWindow * next = par->subwins; + NCursesWindow * prev = 0; + while (next != 0) { + if (next == this) { + if (prev != 0) { + prev->sib = next->sib; + } else { + par->subwins = next->sib; + } break; - } else { - trail = win; - win = win->sib; } + prev = next; + next = next->sib; } } if (alloced && w != 0) - delwin(w); + ::delwin(w); if (alloced) { - --count; - if (count == 0) { - ::endwin(); - } - else if (count < 0) { // cannot happen! - err_handler("Too many windows destroyed"); - } + --count; + if (count == 0) { + ::endwin(); + } else if (count < 0) { // cannot happen! + err_handler("Too many windows destroyed"); + } } } @@ -345,88 +387,82 @@ void NCursesWindow::useColors(void) { if (colorInitialized == COLORS_NOT_INITIALIZED) { - if (b_initialized) { - if (::has_colors()) { - ::start_color(); - colorInitialized = COLORS_ARE_REALLY_THERE; + if (b_initialized) { + if (::has_colors()) { + ::start_color(); + colorInitialized = COLORS_ARE_REALLY_THERE; + } else { + colorInitialized = COLORS_MONOCHROME; + } + } else { + colorInitialized = COLORS_NEED_INITIALIZATION; } - else - colorInitialized = COLORS_MONOCHROME; - } - else - colorInitialized = COLORS_NEED_INITIALIZATION; } } +short +NCursesWindow::getPair() const +{ + return static_cast(PAIR_NUMBER(getattrs(w))); +} + short NCursesWindow::getcolor(int getback) const { short fore, back; - if (colorInitialized==COLORS_ARE_REALLY_THERE) { - if (pair_content((short)PAIR_NUMBER(w->_attrs), &fore, &back)) - err_handler("Can't get color pair"); - } - else { - // Monochrome means white on black - back = COLOR_BLACK; - fore = COLOR_WHITE; + if (HaveColors()) { + if (::pair_content(getPair(), &fore, &back) == ERR) + err_handler("Can't get color pair"); + } else { + // Monochrome means white on black + back = COLOR_BLACK; + fore = COLOR_WHITE; } return getback ? back : fore; } int NCursesWindow::NumberOfColors() { - if (colorInitialized==COLORS_ARE_REALLY_THERE) - return COLORS; - else - return 1; // monochrome (actually there are two ;-) + return (HaveColors()) ? COLORS : 1; } short NCursesWindow::getcolor() const { - if (colorInitialized==COLORS_ARE_REALLY_THERE) - return PAIR_NUMBER(w->_attrs); - else - return 0; // we only have pair zero + return (HaveColors()) ? getPair() : 0; } int NCursesWindow::setpalette(short fore, short back, short pair) { - if (colorInitialized==COLORS_ARE_REALLY_THERE) - return init_pair(pair, fore, back); - else - return OK; + return (HaveColors()) ? ::init_pair(pair, fore, back) : OK; } int NCursesWindow::setpalette(short fore, short back) { - if (colorInitialized==COLORS_ARE_REALLY_THERE) - return setpalette(fore, back, (short)PAIR_NUMBER(w->_attrs)); - else - return OK; + return setpalette(fore, back, getPair()); } int NCursesWindow::setcolor(short pair) { - if (colorInitialized==COLORS_ARE_REALLY_THERE) { - if ((pair < 1) || (pair > COLOR_PAIRS)) - err_handler("Can't set color pair"); + if (HaveColors()) { + if ((pair < 1) || (pair > COLOR_PAIRS)) + err_handler("Can't set color pair"); - attroff(A_COLOR); - attrset(COLOR_PAIR(pair)); - } - return OK; + attroff(A_COLOR); + attrset(COLOR_PAIR(pair)); + } + return OK; } -extern "C" int _nc_has_mouse(void); - -bool NCursesWindow::has_mouse() const { - return ((::has_key(KEY_MOUSE) || ::_nc_has_mouse()) - ? TRUE : FALSE); +#if HAVE_HAS_KEY +bool NCursesWindow::has_mouse() const +{ + return ((::has_key(KEY_MOUSE) || ::has_mouse()) + ? TRUE : FALSE); } +#endif