1 /**************************************************************************** 2 * Copyright 2020 Thomas E. Dickey * 3 * Copyright 1998-2009,2010 Free Software Foundation, Inc. * 4 * * 5 * Permission is hereby granted, free of charge, to any person obtaining a * 6 * copy of this software and associated documentation files (the * 7 * "Software"), to deal in the Software without restriction, including * 8 * without limitation the rights to use, copy, modify, merge, publish, * 9 * distribute, distribute with modifications, sublicense, and/or sell * 10 * copies of the Software, and to permit persons to whom the Software is * 11 * furnished to do so, subject to the following conditions: * 12 * * 13 * The above copyright notice and this permission notice shall be included * 14 * in all copies or substantial portions of the Software. * 15 * * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 19 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 23 * * 24 * Except as contained in this notice, the name(s) of the above copyright * 25 * holders shall not be used in advertising or otherwise to promote the * 26 * sale, use or other dealings in this Software without prior written * 27 * authorization. * 28 ****************************************************************************/ 29 30 /**************************************************************************** 31 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1995 * 32 * and: Eric S. Raymond <esr@snark.thyrsus.com> * 33 * and: Juergen Pfeifer 1997-1999 * 34 * and: Thomas E. Dickey 2000-on * 35 ****************************************************************************/ 36 37 /* p_new.c 38 * Creation of a new panel 39 */ 40 #include "panel.priv.h" 41 42 MODULE_ID("$Id: p_new.c,v 1.17 2020/02/02 23:34:34 tom Exp $") 43 44 #ifdef TRACE 45 static char *stdscr_id; 46 static char *new_id; 47 #endif 48 49 /*+------------------------------------------------------------------------- 50 Get root (i.e. stdscr's) panel. 51 Establish the pseudo panel for stdscr if necessary. 52 --------------------------------------------------------------------------*/ 53 static PANEL * 54 root_panel(NCURSES_SP_DCL0) 55 { 56 #if NCURSES_SP_FUNCS 57 struct panelhook *ph = NCURSES_SP_NAME(_nc_panelhook) (sp); 58 59 #elif NO_LEAKS 60 struct panelhook *ph = _nc_panelhook(); 61 #endif 62 63 if (_nc_stdscr_pseudo_panel == (PANEL *) 0) 64 { 65 66 assert(SP_PARM && SP_PARM->_stdscr && !_nc_bottom_panel && !_nc_top_panel); 67 #if NO_LEAKS 68 ph->destroy = del_panel; 69 #endif 70 _nc_stdscr_pseudo_panel = typeMalloc(PANEL, 1); 71 if (_nc_stdscr_pseudo_panel != 0) 72 { 73 PANEL *pan = _nc_stdscr_pseudo_panel; 74 WINDOW *win = SP_PARM->_stdscr; 75 76 pan->win = win; 77 pan->below = (PANEL *) 0; 78 pan->above = (PANEL *) 0; 79 #ifdef TRACE 80 if (!stdscr_id) 81 stdscr_id = strdup("stdscr"); 82 pan->user = stdscr_id; 83 #else 84 pan->user = (void *)0; 85 #endif 86 _nc_bottom_panel = _nc_top_panel = pan; 87 } 88 } 89 return _nc_stdscr_pseudo_panel; 90 } 91 92 NCURSES_EXPORT(PANEL *) 93 new_panel(WINDOW *win) 94 { 95 PANEL *pan = (PANEL *) 0; 96 97 GetWindowHook(win); 98 99 T((T_CALLED("new_panel(%p)"), (void *)win)); 100 101 if (!win) 102 returnPanel(pan); 103 104 if (!_nc_stdscr_pseudo_panel) 105 (void)root_panel(NCURSES_SP_ARG); 106 assert(_nc_stdscr_pseudo_panel); 107 108 if (!(win->_flags & _ISPAD) && (pan = typeMalloc(PANEL, 1))) 109 { 110 pan->win = win; 111 pan->above = (PANEL *) 0; 112 pan->below = (PANEL *) 0; 113 #ifdef TRACE 114 if (!new_id) 115 new_id = strdup("new"); 116 pan->user = new_id; 117 #else 118 pan->user = (char *)0; 119 #endif 120 (void)show_panel(pan); 121 } 122 returnPanel(pan); 123 } 124