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 1.22 2020/12/26 18:25:48 tom Exp $") 43 44 #ifdef TRACE 45 static char *stdscr_id; 46 static char *new_id; 47 48 static PANEL * 49 AllocPanel(const char *name) 50 { 51 PANEL *result = typeMalloc(PANEL, 1); 52 53 _tracef("create :%s %p", name, (void *)result); 54 return result; 55 } 56 #define InitUser(name) \ 57 if (!name ## _id) \ 58 name ## _id = strdup(#name); \ 59 pan->user = name ## _id; \ 60 _tracef("create :user_ptr %p", pan->user) 61 #else 62 #define AllocPanel(name) typeMalloc(PANEL, 1) 63 #define InitUser(name) \ 64 pan->user = (void *)0 65 #endif 66 67 /*+------------------------------------------------------------------------- 68 Get root (i.e. stdscr's) panel. 69 Establish the pseudo panel for stdscr if necessary. 70 --------------------------------------------------------------------------*/ 71 static PANEL * 72 root_panel(NCURSES_SP_DCL0) 73 { 74 #if NCURSES_SP_FUNCS 75 struct panelhook *ph = NCURSES_SP_NAME(_nc_panelhook) (sp); 76 77 #elif NO_LEAKS 78 struct panelhook *ph = _nc_panelhook(); 79 #endif 80 81 if (_nc_stdscr_pseudo_panel == (PANEL *)0) 82 { 83 84 assert(SP_PARM && SP_PARM->_stdscr && !_nc_bottom_panel && !_nc_top_panel); 85 #if NO_LEAKS 86 ph->destroy = del_panel; 87 #endif 88 _nc_stdscr_pseudo_panel = AllocPanel("root_panel"); 89 if (_nc_stdscr_pseudo_panel != 0) 90 { 91 PANEL *pan = _nc_stdscr_pseudo_panel; 92 WINDOW *win = SP_PARM->_stdscr; 93 94 pan->win = win; 95 pan->below = (PANEL *)0; 96 pan->above = (PANEL *)0; 97 InitUser(stdscr); 98 _nc_bottom_panel = _nc_top_panel = pan; 99 } 100 } 101 return _nc_stdscr_pseudo_panel; 102 } 103 104 PANEL_EXPORT(PANEL *) 105 new_panel(WINDOW *win) 106 { 107 PANEL *pan = (PANEL *)0; 108 109 GetWindowHook(win); 110 111 T((T_CALLED("new_panel(%p)"), (void *)win)); 112 113 if (!win) 114 returnPanel(pan); 115 116 if (!_nc_stdscr_pseudo_panel) 117 (void)root_panel(NCURSES_SP_ARG); 118 assert(_nc_stdscr_pseudo_panel); 119 120 if (!(win->_flags & _ISPAD) && (pan = AllocPanel("new_panel"))) 121 { 122 pan->win = win; 123 pan->above = (PANEL *)0; 124 pan->below = (PANEL *)0; 125 InitUser(new); 126 (void)show_panel(pan); 127 } 128 returnPanel(pan); 129 } 130