contrib/ncurses/panel/panel.priv.h

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  28
  29 /* $Id: panel.priv.h,v 1.27 2017/02/11 16:50:43 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
  47 #define NCURSES_OPAQUE_PANEL 0
  48
  49 #include "panel.h"
  50
  51 #ifdef TRACE
  52    extern NCURSES_EXPORT(const char *) _nc_my_visbuf (const void *);
  53 #  ifdef TRACE_TXT
  54 #    define USER_PTR(ptr) _nc_visbuf((const char *)ptr)
  55 #  else
  56 #    define USER_PTR(ptr) _nc_my_visbuf((const char *)ptr)
  57 #  endif
  58
  59 #  define returnPanel(code)     TRACE_RETURN1(code,panel)
  60
  61    extern NCURSES_EXPORT(PANEL *) _nc_retrace_panel (PANEL *);
  62    extern NCURSES_EXPORT(void) _nc_dPanel (const char*, const PANEL*);
  63    extern NCURSES_EXPORT(void) _nc_dStack (const char*, int, const PANEL*);
  64    extern NCURSES_EXPORT(void) _nc_Wnoutrefresh (const PANEL*);
  65    extern NCURSES_EXPORT(void) _nc_Touchpan (const PANEL*);
  66    extern NCURSES_EXPORT(void) _nc_Touchline (const PANEL*, int, int);
  67
  68 #  define dBug(x) _tracef x
  69 #  define dPanel(text,pan) _nc_dPanel(text,pan)
  70 #  define dStack(fmt,num,pan) _nc_dStack(fmt,num,pan)
  71 #  define Wnoutrefresh(pan) _nc_Wnoutrefresh(pan)
  72 #  define Touchpan(pan) _nc_Touchpan(pan)
  73 #  define Touchline(pan,start,count) _nc_Touchline(pan,start,count)
  74 #else /* !TRACE */
  75 #  define returnPanel(code)     return code
  76 #  define dBug(x)
  77 #  define dPanel(text,pan)
  78 #  define dStack(fmt,num,pan)
  79 #  define Wnoutrefresh(pan) wnoutrefresh((pan)->win)
  80 #  define Touchpan(pan) touchwin((pan)->win)
  81 #  define Touchline(pan,start,count) touchline((pan)->win,start,count)
  82 #endif
  83
  84 #if NCURSES_SP_FUNCS
  85 #define GetScreenHook(sp) \
  86                         struct panelhook* ph = NCURSES_SP_NAME(_nc_panelhook)(sp)
  87 #define GetPanelHook(pan) \
  88                         GetScreenHook(pan ? _nc_screen_of((pan)->win) : 0)
  89 #define GetWindowHook(win) \
  90                         SCREEN* sp = _nc_screen_of(win); \
  91                         GetScreenHook(sp)
  92 #define GetHook(pan)    SCREEN* sp = _nc_screen_of(pan->win); \
  93                         GetScreenHook(sp)
  94
  95 #define _nc_stdscr_pseudo_panel ((ph)->stdscr_pseudo_panel)
  96 #define _nc_top_panel           ((ph)->top_panel)
  97 #define _nc_bottom_panel        ((ph)->bottom_panel)
  98
  99 #else   /* !NCURSES_SP_FUNCS */
 100
 101 #define GetScreenHook(sp) /* nothing */
 102 #define GetPanelHook(pan) /* nothing */
 103 #define GetWindowHook(win) /* nothing */
 104 #define GetHook(pan) /* nothing */
 105
 106 #define _nc_stdscr_pseudo_panel _nc_panelhook()->stdscr_pseudo_panel
 107 #define _nc_top_panel           _nc_panelhook()->top_panel
 108 #define _nc_bottom_panel        _nc_panelhook()->bottom_panel
 109
 110 #endif  /* NCURSES_SP_FUNCS */
 111
 112 #define EMPTY_STACK() (_nc_top_panel == _nc_bottom_panel)
 113 #define Is_Bottom(p)  (((p) != (PANEL*)0) && !EMPTY_STACK() && (_nc_bottom_panel->above == (p)))
 114 #define Is_Top(p)     (((p) != (PANEL*)0) && !EMPTY_STACK() && (_nc_top_panel == (p)))
 115 #define Is_Pseudo(p)  (((p) != (PANEL*)0) && ((p) == _nc_bottom_panel))
 116
 117 /*+-------------------------------------------------------------------------
 118         IS_LINKED(pan) - check to see if panel is in the stack
 119 --------------------------------------------------------------------------*/
 120 /* This works! The only case where it would fail is, when the list has
 121    only one element. But this could only be the pseudo panel at the bottom */
 122 #define IS_LINKED(p) (((p)->above || (p)->below ||((p)==_nc_bottom_panel)) ? TRUE : FALSE)
 123
 124 #define PSTARTX(pan) ((pan)->win->_begx)
 125 #define PENDX(pan)   ((pan)->win->_begx + getmaxx((pan)->win) - 1)
 126 #define PSTARTY(pan) ((pan)->win->_begy)
 127 #define PENDY(pan)   ((pan)->win->_begy + getmaxy((pan)->win) - 1)
 128
 129 /*+-------------------------------------------------------------------------
 130         PANELS_OVERLAPPED(pan1,pan2) - check panel overlapped
 131 ---------------------------------------------------------------------------*/
 132 #define PANELS_OVERLAPPED(pan1,pan2) \
 133 (( !(pan1) || !(pan2) || \
 134        PSTARTY(pan1) > PENDY(pan2) || PENDY(pan1) < PSTARTY(pan2) ||\
 135        PSTARTX(pan1) > PENDX(pan2) || PENDX(pan1) < PSTARTX(pan2) ) \
 136      ? FALSE : TRUE)
 137
 138
 139 /*+-------------------------------------------------------------------------
 140         Compute the intersection rectangle of two overlapping rectangles
 141 ---------------------------------------------------------------------------*/
 142 #define COMPUTE_INTERSECTION(pan1,pan2,ix1,ix2,iy1,iy2)\
 143    ix1 = (PSTARTX(pan1) < PSTARTX(pan2)) ? PSTARTX(pan2) : PSTARTX(pan1);\
 144    ix2 = (PENDX(pan1)   < PENDX(pan2))   ? PENDX(pan1)   : PENDX(pan2);\
 145    iy1 = (PSTARTY(pan1) < PSTARTY(pan2)) ? PSTARTY(pan2) : PSTARTY(pan1);\
 146    iy2 = (PENDY(pan1)   < PENDY(pan2))   ? PENDY(pan1)   : PENDY(pan2);\
 147    assert((ix1<=ix2) && (iy1<=iy2))
 148
 149
 150 /*+-------------------------------------------------------------------------
 151         Walk through the panel stack starting at the given location and
 152         check for intersections; overlapping panels are "touched", so they
 153         are incrementally overwriting cells that should be hidden.
 154         If the "touch" flag is set, the panel gets touched before it is
 155         updated.
 156 ---------------------------------------------------------------------------*/
 157 #define PANEL_UPDATE(pan,panstart)\
 158 {  PANEL* pan2 = ((panstart) ? (panstart) : _nc_bottom_panel);\
 159    while(pan2 && pan2->win) {\
 160       if ((pan2 != pan) && PANELS_OVERLAPPED(pan,pan2)) {\
 161         int y, ix1, ix2, iy1, iy2;\
 162         COMPUTE_INTERSECTION(pan, pan2, ix1, ix2, iy1, iy2);\
 163         for(y = iy1; y <= iy2; y++) {\
 164           if (is_linetouched(pan->win,y - PSTARTY(pan))) {\
 165             struct ldat* line = &(pan2->win->_line[y - PSTARTY(pan2)]);\
 166             CHANGED_RANGE(line, ix1 - PSTARTX(pan2), ix2 - PSTARTX(pan2));\
 167           }\
 168         }\
 169       }\
 170       pan2 = pan2->above;\
 171    }\
 172 }
 173
 174 /*+-------------------------------------------------------------------------
 175         Remove panel from stack.
 176 ---------------------------------------------------------------------------*/
 177 #define PANEL_UNLINK(pan,err) \
 178 {  err = ERR;\
 179    if (pan) {\
 180      if (IS_LINKED(pan)) {\
 181        if ((pan)->below)\
 182          (pan)->below->above = (pan)->above;\
 183        if ((pan)->above)\
 184          (pan)->above->below = (pan)->below;\
 185        if ((pan) == _nc_bottom_panel) \
 186          _nc_bottom_panel = (pan)->above;\
 187        if ((pan) == _nc_top_panel) \
 188          _nc_top_panel = (pan)->below;\
 189        err = OK;\
 190      }\
 191      (pan)->above = (pan)->below = (PANEL*)0;\
 192    }\
 193 }
 194
 195 #define HIDE_PANEL(pan,err,err_if_unlinked)\
 196   if (IS_LINKED(pan)) {\
 197     Touchpan(pan);\
 198     PANEL_UPDATE(pan,(PANEL*)0);\
 199     PANEL_UNLINK(pan,err);\
 200   } \
 201   else {\
 202       err = err_if_unlinked;\
 203   }
 204
 205 #if NCURSES_SP_FUNCS
 206 /* These may become later renamed and part of panel.h and the public API */
 207 extern NCURSES_EXPORT(void) NCURSES_SP_NAME(_nc_update_panels)(SCREEN*);
 208 #endif
 209 /* *INDENT-ON* */
 210
 211 #endif /* NCURSES_PANEL_PRIV_H */