contrib/ncurses/panel/panel.priv.h

   1 /****************************************************************************
   2  * Copyright (c) 1998-2012,2014 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 /* $Id: panel.priv.h,v 1.26 2014/11/01 14:48:03 tom Exp $ */
  30
  31 #ifndef NCURSES_PANEL_PRIV_H
  32 #define NCURSES_PANEL_PRIV_H 1
  33 /* *INDENT-OFF* */
  34
  35 #if HAVE_CONFIG_H
  36 #  include <ncurses_cfg.h>
  37 #endif
  38
  39 #include <stdlib.h>
  40 #include <string.h>
  41 #include <assert.h>
  42
  43 struct screen;              /* forward declaration */
  44
  45 #include "curses.priv.h"    /* includes nc_panel.h */
  46 #include "panel.h"
  47
  48
  49 #if USE_RCS_IDS
  50 #  define MODULE_ID(id) static const char Ident[] = id;
  51 #else
  52 #  define MODULE_ID(id) /*nothing*/
  53 #endif
  54
  55
  56 #ifdef TRACE
  57    extern NCURSES_EXPORT(const char *) _nc_my_visbuf (const void *);
  58 #  ifdef TRACE_TXT
  59 #    define USER_PTR(ptr) _nc_visbuf((const char *)ptr)
  60 #  else
  61 #    define USER_PTR(ptr) _nc_my_visbuf((const char *)ptr)
  62 #  endif
  63
  64 #  define returnPanel(code)     TRACE_RETURN1(code,panel)
  65
  66    extern NCURSES_EXPORT(PANEL *) _nc_retrace_panel (PANEL *);
  67    extern NCURSES_EXPORT(void) _nc_dPanel (const char*, const PANEL*);
  68    extern NCURSES_EXPORT(void) _nc_dStack (const char*, int, const PANEL*);
  69    extern NCURSES_EXPORT(void) _nc_Wnoutrefresh (const PANEL*);
  70    extern NCURSES_EXPORT(void) _nc_Touchpan (const PANEL*);
  71    extern NCURSES_EXPORT(void) _nc_Touchline (const PANEL*, int, int);
  72
  73 #  define dBug(x) _tracef x
  74 #  define dPanel(text,pan) _nc_dPanel(text,pan)
  75 #  define dStack(fmt,num,pan) _nc_dStack(fmt,num,pan)
  76 #  define Wnoutrefresh(pan) _nc_Wnoutrefresh(pan)
  77 #  define Touchpan(pan) _nc_Touchpan(pan)
  78 #  define Touchline(pan,start,count) _nc_Touchline(pan,start,count)
  79 #else /* !TRACE */
  80 #  define returnPanel(code)     return code
  81 #  define dBug(x)
  82 #  define dPanel(text,pan)
  83 #  define dStack(fmt,num,pan)
  84 #  define Wnoutrefresh(pan) wnoutrefresh((pan)->win)
  85 #  define Touchpan(pan) touchwin((pan)->win)
  86 #  define Touchline(pan,start,count) touchline((pan)->win,start,count)
  87 #endif
  88
  89 #if NCURSES_SP_FUNCS
  90 #define GetScreenHook(sp) \
  91                         struct panelhook* ph = NCURSES_SP_NAME(_nc_panelhook)(sp)
  92 #define GetPanelHook(pan) \
  93                         GetScreenHook(pan ? _nc_screen_of((pan)->win) : 0)
  94 #define GetWindowHook(win) \
  95                         SCREEN* sp = _nc_screen_of(win); \
  96                         GetScreenHook(sp)
  97 #define GetHook(pan)    SCREEN* sp = _nc_screen_of(pan->win); \
  98                         GetScreenHook(sp)
  99
 100 #define _nc_stdscr_pseudo_panel ((ph)->stdscr_pseudo_panel)
 101 #define _nc_top_panel           ((ph)->top_panel)
 102 #define _nc_bottom_panel        ((ph)->bottom_panel)
 103
 104 #else   /* !NCURSES_SP_FUNCS */
 105
 106 #define GetScreenHook(sp) /* nothing */
 107 #define GetPanelHook(pan) /* nothing */
 108 #define GetWindowHook(win) /* nothing */
 109 #define GetHook(pan) /* nothing */
 110
 111 #define _nc_stdscr_pseudo_panel _nc_panelhook()->stdscr_pseudo_panel
 112 #define _nc_top_panel           _nc_panelhook()->top_panel
 113 #define _nc_bottom_panel        _nc_panelhook()->bottom_panel
 114
 115 #endif  /* NCURSES_SP_FUNCS */
 116
 117 #define EMPTY_STACK() (_nc_top_panel == _nc_bottom_panel)
 118 #define Is_Bottom(p)  (((p) != (PANEL*)0) && !EMPTY_STACK() && (_nc_bottom_panel->above == (p)))
 119 #define Is_Top(p)     (((p) != (PANEL*)0) && !EMPTY_STACK() && (_nc_top_panel == (p)))
 120 #define Is_Pseudo(p)  (((p) != (PANEL*)0) && ((p) == _nc_bottom_panel))
 121
 122 /*+-------------------------------------------------------------------------
 123         IS_LINKED(pan) - check to see if panel is in the stack
 124 --------------------------------------------------------------------------*/
 125 /* This works! The only case where it would fail is, when the list has
 126    only one element. But this could only be the pseudo panel at the bottom */
 127 #define IS_LINKED(p) (((p)->above || (p)->below ||((p)==_nc_bottom_panel)) ? TRUE : FALSE)
 128
 129 #define PSTARTX(pan) ((pan)->win->_begx)
 130 #define PENDX(pan)   ((pan)->win->_begx + getmaxx((pan)->win) - 1)
 131 #define PSTARTY(pan) ((pan)->win->_begy)
 132 #define PENDY(pan)   ((pan)->win->_begy + getmaxy((pan)->win) - 1)
 133
 134 /*+-------------------------------------------------------------------------
 135         PANELS_OVERLAPPED(pan1,pan2) - check panel overlapped
 136 ---------------------------------------------------------------------------*/
 137 #define PANELS_OVERLAPPED(pan1,pan2) \
 138 (( !(pan1) || !(pan2) || \
 139        PSTARTY(pan1) > PENDY(pan2) || PENDY(pan1) < PSTARTY(pan2) ||\
 140        PSTARTX(pan1) > PENDX(pan2) || PENDX(pan1) < PSTARTX(pan2) ) \
 141      ? FALSE : TRUE)
 142
 143
 144 /*+-------------------------------------------------------------------------
 145         Compute the intersection rectangle of two overlapping rectangles
 146 ---------------------------------------------------------------------------*/
 147 #define COMPUTE_INTERSECTION(pan1,pan2,ix1,ix2,iy1,iy2)\
 148    ix1 = (PSTARTX(pan1) < PSTARTX(pan2)) ? PSTARTX(pan2) : PSTARTX(pan1);\
 149    ix2 = (PENDX(pan1)   < PENDX(pan2))   ? PENDX(pan1)   : PENDX(pan2);\
 150    iy1 = (PSTARTY(pan1) < PSTARTY(pan2)) ? PSTARTY(pan2) : PSTARTY(pan1);\
 151    iy2 = (PENDY(pan1)   < PENDY(pan2))   ? PENDY(pan1)   : PENDY(pan2);\
 152    assert((ix1<=ix2) && (iy1<=iy2))
 153
 154
 155 /*+-------------------------------------------------------------------------
 156         Walk through the panel stack starting at the given location and
 157         check for intersections; overlapping panels are "touched", so they
 158         are incrementally overwriting cells that should be hidden.
 159         If the "touch" flag is set, the panel gets touched before it is
 160         updated.
 161 ---------------------------------------------------------------------------*/
 162 #define PANEL_UPDATE(pan,panstart)\
 163 {  PANEL* pan2 = ((panstart) ? (panstart) : _nc_bottom_panel);\
 164    while(pan2 && pan2->win) {\
 165       if ((pan2 != pan) && PANELS_OVERLAPPED(pan,pan2)) {\
 166         int y, ix1, ix2, iy1, iy2;\
 167         COMPUTE_INTERSECTION(pan, pan2, ix1, ix2, iy1, iy2);\
 168         for(y = iy1; y <= iy2; y++) {\
 169           if (is_linetouched(pan->win,y - PSTARTY(pan))) {\
 170             struct ldat* line = &(pan2->win->_line[y - PSTARTY(pan2)]);\
 171             CHANGED_RANGE(line, ix1 - PSTARTX(pan2), ix2 - PSTARTX(pan2));\
 172           }\
 173         }\
 174       }\
 175       pan2 = pan2->above;\
 176    }\
 177 }
 178
 179 /*+-------------------------------------------------------------------------
 180         Remove panel from stack.
 181 ---------------------------------------------------------------------------*/
 182 #define PANEL_UNLINK(pan,err) \
 183 {  err = ERR;\
 184    if (pan) {\
 185      if (IS_LINKED(pan)) {\
 186        if ((pan)->below)\
 187          (pan)->below->above = (pan)->above;\
 188        if ((pan)->above)\
 189          (pan)->above->below = (pan)->below;\
 190        if ((pan) == _nc_bottom_panel) \
 191          _nc_bottom_panel = (pan)->above;\
 192        if ((pan) == _nc_top_panel) \
 193          _nc_top_panel = (pan)->below;\
 194        err = OK;\
 195      }\
 196      (pan)->above = (pan)->below = (PANEL*)0;\
 197    }\
 198 }
 199
 200 #define HIDE_PANEL(pan,err,err_if_unlinked)\
 201   if (IS_LINKED(pan)) {\
 202     Touchpan(pan);\
 203     PANEL_UPDATE(pan,(PANEL*)0);\
 204     PANEL_UNLINK(pan,err);\
 205   } \
 206   else {\
 207       err = err_if_unlinked;\
 208   }
 209
 210 #if NCURSES_SP_FUNCS
 211 /* These may become later renamed and part of panel.h and the public API */
 212 extern NCURSES_EXPORT(void) NCURSES_SP_NAME(_nc_update_panels)(SCREEN*);
 213 #endif
 214 /* *INDENT-ON* */
 215
 216 #endif /* NCURSES_PANEL_PRIV_H */