1 /* $OpenBSD: p_new.c,v 1.6 2023/10/17 09:52:10 nicm Exp $ */ 2 3 /**************************************************************************** 4 * Copyright 2020,2021 Thomas E. Dickey * 5 * Copyright 1998-2009,2010 Free Software Foundation, Inc. * 6 * * 7 * Permission is hereby granted, free of charge, to any person obtaining a * 8 * copy of this software and associated documentation files (the * 9 * "Software"), to deal in the Software without restriction, including * 10 * without limitation the rights to use, copy, modify, merge, publish, * 11 * distribute, distribute with modifications, sublicense, and/or sell * 12 * copies of the Software, and to permit persons to whom the Software is * 13 * furnished to do so, subject to the following conditions: * 14 * * 15 * The above copyright notice and this permission notice shall be included * 16 * in all copies or substantial portions of the Software. * 17 * * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 21 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 24 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 25 * * 26 * Except as contained in this notice, the name(s) of the above copyright * 27 * holders shall not be used in advertising or otherwise to promote the * 28 * sale, use or other dealings in this Software without prior written * 29 * authorization. * 30 ****************************************************************************/ 31 32 /**************************************************************************** 33 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1995 * 34 * and: Eric S. Raymond <esr@snark.thyrsus.com> * 35 * and: Juergen Pfeifer 1997-1999 * 36 * and: Thomas E. Dickey 2000-on * 37 ****************************************************************************/ 38 39 /* p_new.c 40 * Creation of a new panel 41 */ 42 #include "panel.priv.h" 43 44 MODULE_ID("$Id: p_new.c,v 1.6 2023/10/17 09:52:10 nicm Exp $") 45 46 #ifdef TRACE 47 static char *stdscr_id; 48 static char *new_id; 49 50 static PANEL * 51 AllocPanel(const char *name) 52 { 53 PANEL *result = typeMalloc(PANEL, 1); 54 55 _tracef("create :%s %p", name, (void *)result); 56 return result; 57 } 58 #define InitUser(name) \ 59 if (!name ## _id) \ 60 name ## _id = strdup(#name); \ 61 pan->user = name ## _id; \ 62 _tracef("create :user_ptr %p", pan->user) 63 #else 64 #define AllocPanel(name) typeMalloc(PANEL, 1) 65 #define InitUser(name) \ 66 pan->user = (void *)0 67 #endif 68 69 /*+------------------------------------------------------------------------- 70 Get root (i.e. stdscr's) panel. 71 Establish the pseudo panel for stdscr if necessary. 72 --------------------------------------------------------------------------*/ 73 static PANEL * 74 root_panel(NCURSES_SP_DCL0) 75 { 76 #if NCURSES_SP_FUNCS 77 struct panelhook *ph = NCURSES_SP_NAME(_nc_panelhook) (sp); 78 79 #elif NO_LEAKS 80 struct panelhook *ph = _nc_panelhook(); 81 #endif 82 83 if (_nc_stdscr_pseudo_panel == (PANEL *)0) 84 { 85 86 assert(SP_PARM && SP_PARM->_stdscr && !_nc_bottom_panel && !_nc_top_panel); 87 #if NO_LEAKS 88 ph->destroy = del_panel; 89 #endif 90 _nc_stdscr_pseudo_panel = AllocPanel("root_panel"); 91 if (_nc_stdscr_pseudo_panel != 0) 92 { 93 PANEL *pan = _nc_stdscr_pseudo_panel; 94 WINDOW *win = SP_PARM->_stdscr; 95 96 pan->win = win; 97 pan->below = (PANEL *)0; 98 pan->above = (PANEL *)0; 99 InitUser(stdscr); 100 _nc_bottom_panel = _nc_top_panel = pan; 101 } 102 } 103 return _nc_stdscr_pseudo_panel; 104 } 105 106 PANEL_EXPORT(PANEL *) 107 new_panel(WINDOW *win) 108 { 109 PANEL *pan = (PANEL *)0; 110 111 GetWindowHook(win); 112 113 T((T_CALLED("new_panel(%p)"), (void *)win)); 114 115 if (!win) 116 returnPanel(pan); 117 118 if (!_nc_stdscr_pseudo_panel) 119 (void)root_panel(NCURSES_SP_ARG); 120 assert(_nc_stdscr_pseudo_panel); 121 122 if ((pan = AllocPanel("new_panel")) != NULL) 123 { 124 pan->win = win; 125 pan->above = (PANEL *)0; 126 pan->below = (PANEL *)0; 127 InitUser(new); 128 (void)show_panel(pan); 129 } 130 returnPanel(pan); 131 } 132