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/*
* $LynxId: LYJustify.h,v 1.8 2009/11/21 15:24:48 tom Exp $
*
* Justification for lynx - implemented by Vlad Harchev <hvv@hippo.ru>
* 11 July 1999
*/
#ifndef LYJUSTIFY_H
#define LYJUSTIFY_H
#include <HTUtils.h>
#ifdef __cplusplus
extern "C" {
#endif
#ifdef USE_JUSTIFY_ELTS
extern BOOL can_justify_here;
extern BOOL can_justify_here_saved;
extern BOOL can_justify_this_line;
extern int wait_for_this_stacked_elt;
extern BOOL form_in_htext;
/* this is the element with SGML_EMPTY content, so it won't get on the stack,
* so we can't trap it with wait_for_this_stacked_elt
*/
extern BOOL in_DT;
/*disabled by default*/
/*#define DEBUG_JUSTIFY*/
#ifdef DEBUG_JUSTIFY
extern BOOL can_justify_stack_depth; /* can be 0 or 1 if all code is correct */
# define CAN_JUSTIFY_STACK_INC ++can_justify_stack_depth;\
assert(can_justify_stack_depth < 2 && can_justify_stack_depth >=0 );
# define CAN_JUSTIFY_STACK_DEC --can_justify_stack_depth;\
assert(can_justify_stack_depth < 2 && can_justify_stack_depth >=0 );
#else
# define CAN_JUSTIFY_STACK_INC /* nothing */
# define CAN_JUSTIFY_STACK_DEC /* nothing */
#endif
#define CAN_JUSTIFY_PUSH(x) can_justify_here_saved=can_justify_here;\
can_justify_here=(x); CAN_JUSTIFY_STACK_INC
#define CAN_JUSTIFY_POP can_justify_here=can_justify_here_saved;\
CAN_JUSTIFY_STACK_INC
#define CAN_JUSTIFY_SET(x) can_justify_here=(x);
/*
* This is used to indicate that starting from the current offset in current
* line justification can take place (in order the gap between some prefix and
* the word not to be enlarged.
* For example, when forming OL,
* 1.21 foo
* ^justification can start here so that gap between 1.21 and "foo"
* will not be enlarged.
* This is a macro (that uses 'me').
*/
#define CAN_JUSTIFY_START mark_justify_start_position(me->text);
#define CANT_JUSTIFY_THIS_LINE can_justify_this_line = FALSE
#define EMIT_IFDEF_USE_JUSTIFY_ELTS(x) x
/*defined in order not to wrap single line of code into #ifdef/#endif */
extern void ht_justify_cleanup(void);
extern void mark_justify_start_position(void *text);
#else /* ! USE_JUSTIFY_ELTS */
/*
* define empty macros so that they can be used without wrapping them in
* #ifdef USE_JUSTIFY_ELTS/#endif
*/
#define CAN_JUSTIFY_PUSH(x)
#define CAN_JUSTIFY_POP
#define CAN_JUSTIFY_SET(x)
#define CAN_JUSTIFY_START
#define CANT_JUSTIFY_THIS_LINE
#define EMIT_IFDEF_USE_JUSTIFY_ELTS(x)
#endif /* USE_JUSTIFY_ELTS */
#define CAN_JUSTIFY_PUSH_F CAN_JUSTIFY_PUSH(FALSE)
#ifdef __cplusplus
}
#endif
#endif /* LYJUSTIFY_H */
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