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emacs/src/cm.h
Paul Eggert 55ba8c022b Make src headers idempotent and standalone 
Redo src/*.h so that each include file is idempotent (that is, can
be included multiple times with the latter inclusions having no
effect) and standalone (that is, can be included by itself,
with no include file other than config.h needed as a prerequisite).
This is standard practice in GNU programs nowadays.
* lwlib/lwlib-widget.h, src/buffer.h, src/category.h, src/character.h:
* src/charset.h, src/coding.h, src/commands.h, src/disptab.h:
* src/fontset.h, src/gnutls.h, src/indent.h, src/keymap.h, src/macros.h:
* src/regex.h [emacs]:
* src/syntax.h, src/systty.h, src/termhooks.h:
Include lisp.h, for Lisp_Object.
* src/buffer.h, src/category.h, src/cm.h, src/commands.h, src/disptab.h:
* src/indent.h, src/intervals.h, src/keyboard.h, src/macros.h:
* src/process.h, src/puresize.h, src/region-cache.h, src/syntax.h:
* src/syssignal.h, src/sysstdio.h, src/systty.h, src/termchar.h:
* src/termopts.h, src/tparam.h, src/unexec.h:
Protect against multiple inclusion.
* src/buffer.h: Include character.h, for STRING_CHAR.
* src/emacsgtkfixed.h (struct frame):
* src/fontset.h (struct face):
* src/region-cache.h (struct buffer):
* src/termhooks.h (struct glyph):
* src/xsettings.h (struct x_display_info):
Add possibly-forward decl.
* src/syntax.h: Include buffer.h, for BVAR.
* src/sysselect.h: Include lisp.h, for eassume.
* src/termchar.h: Include <stdio.h>, for FILE.
* src/widget.h: Include <X11/IntrinsicP.h>, for Widget.
* src/xsettings.h: Include <X11/Xlib.h>, for XEvent.
2015-10-16 14:56:11 -07:00

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/* Cursor motion calculation definitions for GNU Emacs
Copyright (C) 1985, 1989, 2001-2015 Free Software Foundation, Inc.
This file is part of GNU Emacs.
GNU Emacs is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
#ifndef EMACS_CM_H
#define EMACS_CM_H
/* Holds the minimum and maximum costs for the parameterized capabilities. */
struct parmcap
{
int mincost, maxcost;
};
/* This structure holds everything needed to do cursor motion except the pad
character (PC) and the output speed of the terminal (ospeed), which
termcap wants in global variables. */
struct cm
{
/* Cursor position. -1 in *both* variables means the cursor
position is unknown, in order to force absolute cursor motion. */
int cm_curY; /* Current row */
int cm_curX; /* Current column */
/* Capabilities from termcap */
const char *cm_up; /* up (up) */
const char *cm_down; /* down (do) */
const char *cm_left; /* left (le) */
const char *cm_right; /* right (nd) */
const char *cm_home; /* home (ho) */
const char *cm_cr; /* carriage return (cr) */
const char *cm_ll; /* last line (ll) */
const char *cm_tab; /* tab (ta) */
const char *cm_backtab; /* backtab (bt) */
char *cm_abs; /* absolute (cm) */
const char *cm_habs; /* horizontal absolute (ch) */
const char *cm_vabs; /* vertical absolute (cv) */
#if false
const char *cm_ds; /* "don't send" string (ds) */
#endif
const char *cm_multiup; /* multiple up (UP) */
const char *cm_multidown; /* multiple down (DO) */
const char *cm_multileft; /* multiple left (LE) */
const char *cm_multiright; /* multiple right (RI) */
int cm_cols; /* number of cols on screen (co) */
int cm_rows; /* number of rows on screen (li) */
int cm_tabwidth; /* tab width (it) */
bool_bf cm_autowrap : 1; /* autowrap flag (am) */
bool_bf cm_magicwrap : 1; /* VT-100: cursor stays in last col but
will cm_wrap if next char is
printing (xn) */
bool_bf cm_usetabs : 1; /* if set, use tabs */
bool_bf cm_losewrap : 1; /* if reach right margin, forget cursor
location */
bool_bf cm_autolf : 1; /* \r performs a \r\n (rn) */
/* Parameterized capabilities. This needs to be a struct since
the costs are accessed through pointers. */
#if false
struct parmcap cc_abs; /* absolute (cm) */
struct parmcap cc_habs; /* horizontal absolute (ch) */
struct parmcap cc_vabs; /* vertical absolute (cv) */
struct parmcap cc_multiup; /* multiple up (UP) */
struct parmcap cc_multidown; /* multiple down (DO) */
struct parmcap cc_multileft; /* multiple left (LE) */
struct parmcap cc_multiright; /* multiple right (RI) */
#endif
/* Costs for the non-parameterized capabilities */
int cc_up; /* cost for up */
int cc_down; /* etc. */
int cc_left;
int cc_right;
int cc_home;
int cc_cr;
int cc_ll;
int cc_tab;
int cc_backtab;
/* These are temporary, until the code is installed to use the
struct parmcap fields above. */
int cc_abs;
int cc_habs;
int cc_vabs;
};
/* Shorthand */
#ifndef NoCMShortHand
#define curY(tty) (tty)->Wcm->cm_curY
#define curX(tty) (tty)->Wcm->cm_curX
#define Up(tty) (tty)->Wcm->cm_up
#define Down(tty) (tty)->Wcm->cm_down
#define Left(tty) (tty)->Wcm->cm_left
#define Right(tty) (tty)->Wcm->cm_right
#define Tab(tty) (tty)->Wcm->cm_tab
#define BackTab(tty) (tty)->Wcm->cm_backtab
#define TabWidth(tty) (tty)->Wcm->cm_tabwidth
#define CR(tty) (tty)->Wcm->cm_cr
#define Home(tty) (tty)->Wcm->cm_home
#define LastLine(tty) (tty)->Wcm->cm_ll
#define AbsPosition(tty) (tty)->Wcm->cm_abs
#define ColPosition(tty) (tty)->Wcm->cm_habs
#define RowPosition(tty) (tty)->Wcm->cm_vabs
#define MultiUp(tty) (tty)->Wcm->cm_multiup
#define MultiDown(tty) (tty)->Wcm->cm_multidown
#define MultiLeft(tty) (tty)->Wcm->cm_multileft
#define MultiRight(tty) (tty)->Wcm->cm_multiright
#define AutoWrap(tty) (tty)->Wcm->cm_autowrap
#define MagicWrap(tty) (tty)->Wcm->cm_magicwrap
#define UseTabs(tty) (tty)->Wcm->cm_usetabs
#define FrameRows(tty) (tty)->Wcm->cm_rows
#define FrameCols(tty) (tty)->Wcm->cm_cols
#define UpCost(tty) (tty)->Wcm->cc_up
#define DownCost(tty) (tty)->Wcm->cc_down
#define LeftCost(tty) (tty)->Wcm->cc_left
#define RightCost(tty) (tty)->Wcm->cc_right
#define HomeCost(tty) (tty)->Wcm->cc_home
#define CRCost(tty) (tty)->Wcm->cc_cr
#define LastLineCost(tty) (tty)->Wcm->cc_ll
#define TabCost(tty) (tty)->Wcm->cc_tab
#define BackTabCost(tty) (tty)->Wcm->cc_backtab
#define AbsPositionCost(tty) (tty)->Wcm->cc_abs
#define ColPositionCost(tty) (tty)->Wcm->cc_habs
#define RowPositionCost(tty) (tty)->Wcm->cc_vabs
#define MultiUpCost(tty) (tty)->Wcm->cc_multiup
#define MultiDownCost(tty) (tty)->Wcm->cc_multidown
#define MultiLeftCost(tty) (tty)->Wcm->cc_multileft
#define MultiRightCost(tty) (tty)->Wcm->cc_multiright
#endif /* NoCMShortHand */
#define cmat(tty,row,col) (curY(tty) = (row), curX(tty) = (col))
#define cmplus(tty,n) \
{ \
if ((curX (tty) += (n)) >= FrameCols (tty) && !MagicWrap (tty)) \
{ \
if ((tty)->Wcm->cm_losewrap) losecursor (tty); \
else if (AutoWrap (tty)) curX (tty) = 0, curY (tty)++; \
else curX (tty)--; \
} \
}
#define losecursor(tty) (curX(tty) = -1, curY(tty) = -1)
extern int cost;
extern int evalcost (int c);
#define emacs_tputs(tty, str, affcnt, putc) (current_tty = (tty), tputs (str, affcnt, putc))
extern struct tty_display_info *current_tty;
extern void cmcheckmagic (struct tty_display_info *);
extern int cmputc (int);
extern void cmcostinit (struct tty_display_info *);
extern void cmgoto (struct tty_display_info *, int, int);
extern void Wcm_clear (struct tty_display_info *);
extern int Wcm_init (struct tty_display_info *);
#endif /* EMACS_CM_H */
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