1 /**************************************************************************** 2 * Copyright (c) 1998-2005,2008 Free Software Foundation, Inc. * 3 * * 4 * Permission is hereby granted, free of charge, to any person obtaining a * 5 * copy of this software and associated documentation files (the * 6 * "Software"), to deal in the Software without restriction, including * 7 * without limitation the rights to use, copy, modify, merge, publish, * 8 * distribute, distribute with modifications, sublicense, and/or sell * 9 * copies of the Software, and to permit persons to whom the Software is * 10 * furnished to do so, subject to the following conditions: * 11 * * 12 * The above copyright notice and this permission notice shall be included * 13 * in all copies or substantial portions of the Software. * 14 * * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 22 * * 23 * Except as contained in this notice, the name(s) of the above copyright * 24 * holders shall not be used in advertising or otherwise to promote the * 25 * sale, use or other dealings in this Software without prior written * 26 * authorization. * 27 ****************************************************************************/ 28 29 /**************************************************************************** 30 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1995 * 31 * and: Eric S. Raymond <esr@snark.thyrsus.com> * 32 * and: Juergen Pfeifer 1997-1999 * 33 * and: Thomas E. Dickey 2000-on * 34 ****************************************************************************/ 35 36 /* p_new.c 37 * Creation of a new panel 38 */ 39 #include "panel.priv.h" 40 41 MODULE_ID("$Id: p_new.c,v 1.10 2008/08/04 18:25:48 tom Exp $") 42 43 #ifdef TRACE 44 static char *stdscr_id; 45 static char *new_id; 46 #endif 47 48 /*+------------------------------------------------------------------------- 49 Get root (i.e. stdscr's) panel. 50 Establish the pseudo panel for stdscr if necessary. 51 --------------------------------------------------------------------------*/ 52 static PANEL * 53 root_panel(void) 54 { 55 if (_nc_stdscr_pseudo_panel == (PANEL *) 0) 56 { 57 58 assert(stdscr && !_nc_bottom_panel && !_nc_top_panel); 59 #if NO_LEAKS 60 _nc_panelhook()->destroy = del_panel; 61 #endif 62 _nc_stdscr_pseudo_panel = (PANEL *) malloc(sizeof(PANEL)); 63 if (_nc_stdscr_pseudo_panel != 0) 64 { 65 PANEL *pan = _nc_stdscr_pseudo_panel; 66 WINDOW *win = stdscr; 67 68 pan->win = win; 69 pan->below = (PANEL *) 0; 70 pan->above = (PANEL *) 0; 71 #ifdef TRACE 72 if (!stdscr_id) 73 stdscr_id = strdup("stdscr"); 74 pan->user = stdscr_id; 75 #else 76 pan->user = (void *)0; 77 #endif 78 _nc_bottom_panel = _nc_top_panel = pan; 79 } 80 } 81 return _nc_stdscr_pseudo_panel; 82 } 83 84 NCURSES_EXPORT(PANEL *) 85 new_panel(WINDOW *win) 86 { 87 PANEL *pan = (PANEL *) 0; 88 89 T((T_CALLED("new_panel(%p)"), win)); 90 91 if (!win) 92 returnPanel(pan); 93 94 if (!_nc_stdscr_pseudo_panel) 95 (void)root_panel(); 96 assert(_nc_stdscr_pseudo_panel); 97 98 if (!(win->_flags & _ISPAD) && (pan = (PANEL *) malloc(sizeof(PANEL)))) 99 { 100 pan->win = win; 101 pan->above = (PANEL *) 0; 102 pan->below = (PANEL *) 0; 103 #ifdef TRACE 104 if (!new_id) 105 new_id = strdup("new"); 106 pan->user = new_id; 107 #else 108 pan->user = (char *)0; 109 #endif 110 (void)show_panel(pan); 111 } 112 returnPanel(pan); 113 } 114