1 /**************************************************************************** 2 * Copyright (c) 1998-2000,2005 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 ****************************************************************************/ 33 34 /* p_new.c 35 * Creation of a new panel 36 */ 37 #include "panel.priv.h" 38 39 MODULE_ID("$Id: p_new.c,v 1.8 2005/02/19 16:41:03 tom Exp $") 40 41 #ifdef TRACE 42 static char *stdscr_id; 43 static char *new_id; 44 #endif 45 46 /*+------------------------------------------------------------------------- 47 Get root (i.e. stdscr's) panel. 48 Establish the pseudo panel for stdscr if necessary. 49 --------------------------------------------------------------------------*/ 50 static PANEL * 51 root_panel(void) 52 { 53 if (_nc_stdscr_pseudo_panel == (PANEL *) 0) 54 { 55 56 assert(stdscr && !_nc_bottom_panel && !_nc_top_panel); 57 _nc_stdscr_pseudo_panel = (PANEL *) malloc(sizeof(PANEL)); 58 if (_nc_stdscr_pseudo_panel != 0) 59 { 60 PANEL *pan = _nc_stdscr_pseudo_panel; 61 WINDOW *win = stdscr; 62 63 pan->win = win; 64 pan->below = (PANEL *) 0; 65 pan->above = (PANEL *) 0; 66 #ifdef TRACE 67 if (!stdscr_id) 68 stdscr_id = strdup("stdscr"); 69 pan->user = stdscr_id; 70 #else 71 pan->user = (void *)0; 72 #endif 73 _nc_bottom_panel = _nc_top_panel = pan; 74 } 75 } 76 return _nc_stdscr_pseudo_panel; 77 } 78 79 NCURSES_EXPORT(PANEL *) 80 new_panel(WINDOW *win) 81 { 82 PANEL *pan = (PANEL *) 0; 83 84 T((T_CALLED("new_panel(%p)"), win)); 85 86 if (!win) 87 returnPanel(pan); 88 89 if (!_nc_stdscr_pseudo_panel) 90 (void)root_panel(); 91 assert(_nc_stdscr_pseudo_panel); 92 93 if (!(win->_flags & _ISPAD) && (pan = (PANEL *) malloc(sizeof(PANEL)))) 94 { 95 pan->win = win; 96 pan->above = (PANEL *) 0; 97 pan->below = (PANEL *) 0; 98 #ifdef TRACE 99 if (!new_id) 100 new_id = strdup("new"); 101 pan->user = new_id; 102 #else 103 pan->user = (char *)0; 104 #endif 105 (void)show_panel(pan); 106 } 107 returnPanel(pan); 108 } 109