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/* texmath.h
Copyright 1996-2006 Han The Thanh <thanh@pdftex.org>
Copyright 2006-2009 Taco Hoekwater <taco@luatex.org>
This file is part of LuaTeX.
LuaTeX 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 2 of the License, or (at your
option) any later version.
LuaTeX 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 Lesser General Public
License for more details.
You should have received a copy of the GNU General Public License along
with LuaTeX; if not, see <http://www.gnu.org/licenses/>. */
#ifndef TEXMATH_H
# define TEXMATH_H 1
# define empty 0
extern pointer new_noad(void);
extern void show_math_node(halfword);
extern void flush_math(void);
extern void math_left_brace(void);
extern void finish_display_alignment(halfword, halfword, halfword);
extern halfword new_sub_box(halfword);
# define math_reset(p) do { if (p!=null) flush_node(p); p = null; } while (0)
# define scripts_allowed(A) ((type((A))>=simple_noad)&&(type((A))<fence_noad))
# define default_code 010000000000 /* denotes |default_rule_thickness| */
typedef enum {
ord_noad_type = 0,
op_noad_type_normal,
op_noad_type_limits,
op_noad_type_no_limits,
bin_noad_type,
rel_noad_type,
open_noad_type,
close_noad_type,
punct_noad_type,
inner_noad_type,
under_noad_type,
over_noad_type,
vcenter_noad_type,
} noad_types;
extern void initialize_math(void);
extern void initialize_math_spacing(void);
extern halfword math_vcenter_group(halfword);
extern void build_choices(void);
extern void close_math_group(halfword);
extern void init_math(void);
extern void start_eq_no(void);
extern void set_math_char(mathcodeval);
extern void math_char_in_text(mathcodeval);
extern void math_math_comp(void);
extern void math_limit_switch(void);
extern void math_radical(void);
extern void math_ac(void);
extern pointer new_style(small_number);
extern void append_choices(void);
extern void sub_sup(void);
extern void math_fraction(void);
extern void math_left_right(void);
extern void after_math(void);
extern void scan_extdef_del_code(int level, int extcode);
extern void scan_extdef_math_code(int level, int extcode);
extern int fam_fnt(int fam_id, int size_id);
extern void def_fam_fnt(int fam_id, int size_id, int f, int lvl);
extern void dump_math_data(void);
extern void undump_math_data(void);
void unsave_math_data(int lvl);
/*
@ We also need to compute the change in style between mlists and their
subsidiaries. The following macros define the subsidiary style for
an overlined nucleus (|cramped_style|), for a subscript or a superscript
(|sub_style| or |sup_style|), or for a numerator or denominator (|num_style|
or |denom_style|).
*/
extern const char *math_style_names[];
# define cramped 1 /* add this to an uncramped style if you want to cramp it */
# define cramped_style(A) 2*((A)/2)+cramped /* cramp the style */
# define sub_style(A) 2*((A)/4)+script_style+cramped /* smaller and cramped */
# define sup_style(A) 2*((A)/4)+script_style+((A)%2) /* smaller */
# define num_style(A) (A)+2-2*((A)/6) /* smaller unless already script-script */
# define denom_style(A) 2*((A)/2)+cramped+2-2*((A)/6) /* smaller, cramped */
# define sup_sup_style(A) sup_style(sup_style((A))) /* smaller */
void setup_math_style(void);
void print_math_style(void);
# define text_size 0
# define script_size 1
# define script_script_size 2
# define dir_math_save cur_list.math_field
# define m_style cur_list.math_style_field
# define init_math_fields() do { \
dir_math_save=false; \
m_style=-1; \
} while (0)
# define null_font 0
# define min_quarterword 0
# define undefined_math_parameter max_dimen
typedef enum {
math_param_quad,
math_param_axis,
math_param_operator_size,
math_param_overbar_kern,
math_param_overbar_rule,
math_param_overbar_vgap,
math_param_underbar_kern,
math_param_underbar_rule,
math_param_underbar_vgap,
math_param_radical_kern,
math_param_radical_rule,
math_param_radical_vgap,
math_param_radical_degree_before,
math_param_radical_degree_after,
math_param_radical_degree_raise,
math_param_stack_vgap,
math_param_stack_num_up,
math_param_stack_denom_down,
math_param_fraction_rule,
math_param_fraction_num_vgap,
math_param_fraction_num_up,
math_param_fraction_denom_vgap,
math_param_fraction_denom_down,
math_param_fraction_del_size,
math_param_skewed_fraction_hgap,
math_param_skewed_fraction_vgap,
math_param_limit_above_vgap,
math_param_limit_above_bgap,
math_param_limit_above_kern,
math_param_limit_below_vgap,
math_param_limit_below_bgap,
math_param_limit_below_kern,
math_param_nolimit_sub_factor, /* bonus */
math_param_nolimit_sup_factor, /* bonus */
math_param_under_delimiter_vgap,
math_param_under_delimiter_bgap,
math_param_over_delimiter_vgap,
math_param_over_delimiter_bgap,
math_param_sub_shift_drop,
math_param_sup_shift_drop,
math_param_sub_shift_down,
math_param_sub_sup_shift_down,
math_param_sub_top_max,
math_param_sup_shift_up,
math_param_sup_bottom_min,
math_param_sup_sub_bottom_max,
math_param_subsup_vgap,
math_param_space_after_script,
math_param_connector_overlap_min,
math_param_ord_ord_spacing,
math_param_ord_op_spacing,
math_param_ord_bin_spacing,
math_param_ord_rel_spacing,
math_param_ord_open_spacing,
math_param_ord_close_spacing,
math_param_ord_punct_spacing,
math_param_ord_inner_spacing,
math_param_op_ord_spacing,
math_param_op_op_spacing,
math_param_op_bin_spacing,
math_param_op_rel_spacing,
math_param_op_open_spacing,
math_param_op_close_spacing,
math_param_op_punct_spacing,
math_param_op_inner_spacing,
math_param_bin_ord_spacing,
math_param_bin_op_spacing,
math_param_bin_bin_spacing,
math_param_bin_rel_spacing,
math_param_bin_open_spacing,
math_param_bin_close_spacing,
math_param_bin_punct_spacing,
math_param_bin_inner_spacing,
math_param_rel_ord_spacing,
math_param_rel_op_spacing,
math_param_rel_bin_spacing,
math_param_rel_rel_spacing,
math_param_rel_open_spacing,
math_param_rel_close_spacing,
math_param_rel_punct_spacing,
math_param_rel_inner_spacing,
math_param_open_ord_spacing,
math_param_open_op_spacing,
math_param_open_bin_spacing,
math_param_open_rel_spacing,
math_param_open_open_spacing,
math_param_open_close_spacing,
math_param_open_punct_spacing,
math_param_open_inner_spacing,
math_param_close_ord_spacing,
math_param_close_op_spacing,
math_param_close_bin_spacing,
math_param_close_rel_spacing,
math_param_close_open_spacing,
math_param_close_close_spacing,
math_param_close_punct_spacing,
math_param_close_inner_spacing,
math_param_punct_ord_spacing,
math_param_punct_op_spacing,
math_param_punct_bin_spacing,
math_param_punct_rel_spacing,
math_param_punct_open_spacing,
math_param_punct_close_spacing,
math_param_punct_punct_spacing,
math_param_punct_inner_spacing,
math_param_inner_ord_spacing,
math_param_inner_op_spacing,
math_param_inner_bin_spacing,
math_param_inner_rel_spacing,
math_param_inner_open_spacing,
math_param_inner_close_spacing,
math_param_inner_punct_spacing,
math_param_inner_inner_spacing,
math_param_last
} math_parameters;
extern const char *math_param_names[];
# define math_param_first_mu_glue math_param_ord_ord_spacing
extern void def_math_param(int param_code, int style_code, scaled value,
int lvl);
extern scaled get_math_param(int param_code, int style_code);
typedef enum {
ScriptPercentScaleDown = 1,
ScriptScriptPercentScaleDown,
DelimitedSubFormulaMinHeight,
DisplayOperatorMinHeight,
MathLeading,
AxisHeight,
AccentBaseHeight,
FlattenedAccentBaseHeight,
SubscriptShiftDown,
SubscriptTopMax,
SubscriptBaselineDropMin,
SuperscriptShiftUp,
SuperscriptShiftUpCramped,
SuperscriptBottomMin,
SuperscriptBaselineDropMax,
SubSuperscriptGapMin,
SuperscriptBottomMaxWithSubscript,
SpaceAfterScript,
UpperLimitGapMin,
UpperLimitBaselineRiseMin,
LowerLimitGapMin,
LowerLimitBaselineDropMin,
StackTopShiftUp,
StackTopDisplayStyleShiftUp,
StackBottomShiftDown,
StackBottomDisplayStyleShiftDown,
StackGapMin,
StackDisplayStyleGapMin,
StretchStackTopShiftUp,
StretchStackBottomShiftDown,
StretchStackGapAboveMin,
StretchStackGapBelowMin,
FractionNumeratorShiftUp,
FractionNumeratorDisplayStyleShiftUp,
FractionDenominatorShiftDown,
FractionDenominatorDisplayStyleShiftDown,
FractionNumeratorGapMin,
FractionNumeratorDisplayStyleGapMin,
FractionRuleThickness,
FractionDenominatorGapMin,
FractionDenominatorDisplayStyleGapMin,
SkewedFractionHorizontalGap,
SkewedFractionVerticalGap,
OverbarVerticalGap,
OverbarRuleThickness,
OverbarExtraAscender,
UnderbarVerticalGap,
UnderbarRuleThickness,
UnderbarExtraDescender,
RadicalVerticalGap,
RadicalDisplayStyleVerticalGap,
RadicalRuleThickness,
RadicalExtraAscender,
RadicalKernBeforeDegree,
RadicalKernAfterDegree,
RadicalDegreeBottomRaisePercent,
MinConnectorOverlap,
SubscriptShiftDownWithSuperscript,
FractionDelimiterSize,
FractionDelimiterDisplayStyleSize,
NoLimitSubFactor,
NoLimitSupFactor,
MATH_param_last,
} MATH_param_codes;
# define MATH_param_max MATH_param_last
extern const char *MATH_param_names[];
#endif
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