1 /* $OpenBSD: p_new.c,v 1.5 2010/01/12 23:22:08 nicm Exp $ */ 2 3 /**************************************************************************** 4 * Copyright (c) 1998-2005,2008 Free Software Foundation, Inc. * 5 * * 6 * Permission is hereby granted, free of charge, to any person obtaining a * 7 * copy of this software and associated documentation files (the * 8 * "Software"), to deal in the Software without restriction, including * 9 * without limitation the rights to use, copy, modify, merge, publish, * 10 * distribute, distribute with modifications, sublicense, and/or sell * 11 * copies of the Software, and to permit persons to whom the Software is * 12 * furnished to do so, subject to the following conditions: * 13 * * 14 * The above copyright notice and this permission notice shall be included * 15 * in all copies or substantial portions of the Software. * 16 * * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 20 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 21 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 22 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 23 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 24 * * 25 * Except as contained in this notice, the name(s) of the above copyright * 26 * holders shall not be used in advertising or otherwise to promote the * 27 * sale, use or other dealings in this Software without prior written * 28 * authorization. * 29 ****************************************************************************/ 30 31 /**************************************************************************** 32 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1995 * 33 * and: Eric S. Raymond <esr@snark.thyrsus.com> * 34 * and: Juergen Pfeifer 1997-1999 * 35 * and: Thomas E. Dickey 2000-on * 36 ****************************************************************************/ 37 38 /* p_new.c 39 * Creation of a new panel 40 */ 41 #include "panel.priv.h" 42 43 MODULE_ID("$Id: p_new.c,v 1.5 2010/01/12 23:22:08 nicm Exp $") 44 45 #ifdef TRACE 46 static char *stdscr_id; 47 static char *new_id; 48 #endif 49 50 /*+------------------------------------------------------------------------- 51 Get root (i.e. stdscr's) panel. 52 Establish the pseudo panel for stdscr if necessary. 53 --------------------------------------------------------------------------*/ 54 static PANEL * 55 root_panel(void) 56 { 57 if (_nc_stdscr_pseudo_panel == (PANEL *) 0) 58 { 59 60 assert(stdscr && !_nc_bottom_panel && !_nc_top_panel); 61 #if NO_LEAKS 62 _nc_panelhook()->destroy = del_panel; 63 #endif 64 _nc_stdscr_pseudo_panel = (PANEL *) malloc(sizeof(PANEL)); 65 if (_nc_stdscr_pseudo_panel != 0) 66 { 67 PANEL *pan = _nc_stdscr_pseudo_panel; 68 WINDOW *win = stdscr; 69 70 pan->win = win; 71 pan->below = (PANEL *) 0; 72 pan->above = (PANEL *) 0; 73 #ifdef TRACE 74 if (!stdscr_id) 75 stdscr_id = strdup("stdscr"); 76 pan->user = stdscr_id; 77 #else 78 pan->user = (void *)0; 79 #endif 80 _nc_bottom_panel = _nc_top_panel = pan; 81 } 82 } 83 return _nc_stdscr_pseudo_panel; 84 } 85 86 NCURSES_EXPORT(PANEL *) 87 new_panel(WINDOW *win) 88 { 89 PANEL *pan = (PANEL *) 0; 90 91 T((T_CALLED("new_panel(%p)"), win)); 92 93 if (!win) 94 returnPanel(pan); 95 96 if (!_nc_stdscr_pseudo_panel) 97 (void)root_panel(); 98 assert(_nc_stdscr_pseudo_panel); 99 100 if (!(win->_flags & _ISPAD) && (pan = (PANEL *) malloc(sizeof(PANEL)))) 101 { 102 pan->win = win; 103 pan->above = (PANEL *) 0; 104 pan->below = (PANEL *) 0; 105 #ifdef TRACE 106 if (!new_id) 107 new_id = strdup("new"); 108 pan->user = new_id; 109 #else 110 pan->user = (char *)0; 111 #endif 112 (void)show_panel(pan); 113 } 114 returnPanel(pan); 115 } 116