int over_box::compute_metrics(int style)
{
if (reduce_size) {
style = script_style(style);
printf(".nr " SIZE_FORMAT " \\n[.ps]\n", uid);
set_script_size();
printf(".nr " SMALL_SIZE_FORMAT " \\n[.ps]\n", uid);
}
int mark_uid = 0;
int res = num->compute_metrics(style);
if (res)
mark_uid = num->uid;
int r = den->compute_metrics(cramped_style(style));
if (r && res)
error("multiple marks and lineups");
else {
mark_uid = den->uid;
res = r;
}
if (reduce_size)
printf(".ps \\n[" SIZE_FORMAT "]u\n", uid);
printf(".nr " WIDTH_FORMAT " (\\n[" WIDTH_FORMAT "]>?\\n[" WIDTH_FORMAT "]",
uid, num->uid, den->uid);
// allow for \(ru being wider than both the numerator and denominator
if (!draw_flag)
fputs(">?\\w" DELIMITER_CHAR "\\(ru" DELIMITER_CHAR, stdout);
printf(")+%dM\n", null_delimiter_space*2 + over_hang*2);
// 15b
printf(".nr " SUP_RAISE_FORMAT " %dM\n",
uid, (reduce_size ? num2 : num1));
printf(".nr " SUB_LOWER_FORMAT " %dM\n",
uid, (reduce_size ? denom2 : denom1));
// 15d
printf(".nr " SUP_RAISE_FORMAT " +(\\n[" DEPTH_FORMAT
"]-\\n[" SUP_RAISE_FORMAT "]+%dM+(%dM/2)+%dM)>?0\n",
uid, num->uid, uid, axis_height, default_rule_thickness,
default_rule_thickness*(reduce_size ? 1 : 3));
printf(".nr " SUB_LOWER_FORMAT " +(\\n[" HEIGHT_FORMAT
"]-\\n[" SUB_LOWER_FORMAT "]-%dM+(%dM/2)+%dM)>?0\n",
uid, den->uid, uid, axis_height, default_rule_thickness,
default_rule_thickness*(reduce_size ? 1 : 3));
printf(".nr " HEIGHT_FORMAT " \\n[" SUP_RAISE_FORMAT "]+\\n["
HEIGHT_FORMAT "]\n",
uid, uid, num->uid);
printf(".nr " DEPTH_FORMAT " \\n[" SUB_LOWER_FORMAT "]+\\n["
DEPTH_FORMAT "]\n",
uid, uid, den->uid);
if (res)
printf(".nr " MARK_REG " +(\\n[" WIDTH_FORMAT "]-\\n["
WIDTH_FORMAT "]/2)\n", uid, mark_uid);
return res;
}
int limit_box::compute_metrics(int style)
{
printf(".nr " SIZE_FORMAT " \\n[.ps]\n", uid);
if (!(style <= SCRIPT_STYLE && one_size_reduction_flag))
set_script_size();
printf(".nr " SMALL_SIZE_FORMAT " \\n[.ps]\n", uid);
int res = 0;
int mark_uid = -1;
if (from != 0) {
res = from->compute_metrics(cramped_style(script_style(style)));
if (res)
mark_uid = from->uid;
}
if (to != 0) {
int r = to->compute_metrics(script_style(style));
if (res && r)
error("multiple marks and lineups");
else {
mark_uid = to->uid;
res = r;
}
}
printf(".ps \\n[" SIZE_FORMAT "]u\n", uid);
int r = p->compute_metrics(style);
p->compute_subscript_kern();
if (res && r)
error("multiple marks and lineups");
else {
mark_uid = p->uid;
res = r;
}
printf(".nr " LEFT_WIDTH_FORMAT " "
"0\\n[" WIDTH_FORMAT "]",
uid, p->uid);
if (from != 0)
printf(">?(\\n[" SUB_KERN_FORMAT "]+\\n[" WIDTH_FORMAT "])",
p->uid, from->uid);
if (to != 0)
printf(">?(-\\n[" SUB_KERN_FORMAT "]+\\n[" WIDTH_FORMAT "])",
p->uid, to->uid);
printf("/2\n");
printf(".nr " WIDTH_FORMAT " "
"0\\n[" WIDTH_FORMAT "]",
uid, p->uid);
if (from != 0)
printf(">?(-\\n[" SUB_KERN_FORMAT "]+\\n[" WIDTH_FORMAT "])",
p->uid, from->uid);
if (to != 0)
printf(">?(\\n[" SUB_KERN_FORMAT "]+\\n[" WIDTH_FORMAT "])",
p->uid, to->uid);
printf("/2+\\n[" LEFT_WIDTH_FORMAT "]\n", uid);
printf(".nr " WIDTH_FORMAT " 0\\n[" WIDTH_FORMAT "]", uid, p->uid);
if (to != 0)
printf(">?\\n[" WIDTH_FORMAT "]", to->uid);
if (from != 0)
printf(">?\\n[" WIDTH_FORMAT "]", from->uid);
printf("\n");
if (res)
printf(".nr " MARK_REG " +(\\n[" LEFT_WIDTH_FORMAT "]"
"-(\\n[" WIDTH_FORMAT "]/2))\n",
uid, mark_uid);
if (to != 0) {
printf(".nr " SUP_RAISE_FORMAT " %dM+\\n[" DEPTH_FORMAT
"]>?%dM+\\n[" HEIGHT_FORMAT "]\n",
uid, big_op_spacing1, to->uid, big_op_spacing3, p->uid);
printf(".nr " HEIGHT_FORMAT " \\n[" SUP_RAISE_FORMAT "]+\\n["
HEIGHT_FORMAT "]+%dM\n",
uid, uid, to->uid, big_op_spacing5);
}
else
printf(".nr " HEIGHT_FORMAT " \\n[" HEIGHT_FORMAT "]\n", uid, p->uid);
if (from != 0) {
printf(".nr " SUB_LOWER_FORMAT " %dM+\\n[" HEIGHT_FORMAT
"]>?%dM+\\n[" DEPTH_FORMAT "]\n",
uid, big_op_spacing2, from->uid, big_op_spacing4, p->uid);
printf(".nr " DEPTH_FORMAT " \\n[" SUB_LOWER_FORMAT "]+\\n["
DEPTH_FORMAT "]+%dM\n",
uid, uid, from->uid, big_op_spacing5);
}
else
printf(".nr " DEPTH_FORMAT " \\n[" DEPTH_FORMAT "]\n", uid, p->uid);
return res;
}
int script_box::compute_metrics(int style)
{
int res = p->compute_metrics(style);
p->compute_subscript_kern();
printf(".nr " SIZE_FORMAT " \\n[.ps]\n", uid);
if (!(style <= SCRIPT_STYLE && one_size_reduction_flag))
set_script_size();
printf(".nr " SMALL_SIZE_FORMAT " \\n[.ps]\n", uid);
if (sub != 0)
sub->compute_metrics(cramped_style(script_style(style)));
if (sup != 0)
sup->compute_metrics(script_style(style));
// 18a
if (p->is_char()) {
printf(".nr " SUP_RAISE_FORMAT " 0\n", uid);
printf(".nr " SUB_LOWER_FORMAT " 0\n", uid);
}
else {
printf(".nr " SUP_RAISE_FORMAT " \\n[" HEIGHT_FORMAT "]-%dM>?0\n",
uid, p->uid, sup_drop);
printf(".nr " SUB_LOWER_FORMAT " \\n[" DEPTH_FORMAT "]+%dM\n",
uid, p->uid, sub_drop);
}
printf(".ps \\n[" SIZE_FORMAT "]u\n", uid);
if (sup == 0) {
assert(sub != 0);
// 18b
printf(".nr " SUB_LOWER_FORMAT " \\n[" SUB_LOWER_FORMAT "]>?%dM>?(\\n["
HEIGHT_FORMAT "]-(%dM*4/5))\n",
uid, uid, sub1, sub->uid, x_height);
}
else {
// sup != 0
// 18c
int pos;
if (style == DISPLAY_STYLE)
pos = sup1;
else if (style & 1) // not cramped
pos = sup2;
else
pos = sup3;
printf(".nr " SUP_RAISE_FORMAT " \\n[" SUP_RAISE_FORMAT
"]>?%dM>?(\\n[" DEPTH_FORMAT "]+(%dM/4))\n",
uid, uid, pos, sup->uid, x_height);
// 18d
if (sub != 0) {
printf(".nr " SUB_LOWER_FORMAT " \\n[" SUB_LOWER_FORMAT "]>?%dM\n",
uid, uid, sub2);
// 18e
printf(".nr " TEMP_REG " \\n[" DEPTH_FORMAT "]-\\n["
SUP_RAISE_FORMAT "]+\\n[" HEIGHT_FORMAT "]-\\n["
SUB_LOWER_FORMAT "]+(4*%dM)\n",
sup->uid, uid, sub->uid, uid, default_rule_thickness);
printf(".if \\n[" TEMP_REG "] \\{");
printf(".nr " SUB_LOWER_FORMAT " +\\n[" TEMP_REG "]\n", uid);
printf(".nr " TEMP_REG " (%dM*4/5)-\\n[" SUP_RAISE_FORMAT
"]+\\n[" DEPTH_FORMAT "]>?0\n",
x_height, uid, sup->uid);
printf(".nr " SUP_RAISE_FORMAT " +\\n[" TEMP_REG "]\n", uid);
printf(".nr " SUB_LOWER_FORMAT " -\\n[" TEMP_REG "]\n", uid);
printf(".\\}\n");
}
}
printf(".nr " WIDTH_FORMAT " 0\\n[" WIDTH_FORMAT "]", uid, p->uid);
if (sub != 0 && sup != 0)
printf("+((\\n[" WIDTH_FORMAT "]-\\n[" SUB_KERN_FORMAT "]>?\\n["
WIDTH_FORMAT "])+%dM)>?0\n",
sub->uid, p->uid, sup->uid, script_space);
else if (sub != 0)
printf("+(\\n[" WIDTH_FORMAT "]-\\n[" SUB_KERN_FORMAT "]+%dM)>?0\n",
sub->uid, p->uid, script_space);
else if (sup != 0)
printf("+(\\n[" WIDTH_FORMAT "]+%dM)>?0\n", sup->uid, script_space);
else
printf("\n");
printf(".nr " HEIGHT_FORMAT " \\n[" HEIGHT_FORMAT "]",
uid, p->uid);
if (sup != 0)
printf(">?(\\n[" SUP_RAISE_FORMAT "]+\\n[" HEIGHT_FORMAT "])",
uid, sup->uid);
if (sub != 0)
printf(">?(-\\n[" SUB_LOWER_FORMAT "]+\\n[" HEIGHT_FORMAT "])",
uid, sub->uid);
printf("\n");
printf(".nr " DEPTH_FORMAT " \\n[" DEPTH_FORMAT "]",
uid, p->uid);
if (sub != 0)
printf(">?(\\n[" SUB_LOWER_FORMAT "]+\\n[" DEPTH_FORMAT "])",
uid, sub->uid);
if (sup != 0)
printf(">?(-\\n[" SUP_RAISE_FORMAT "]+\\n[" DEPTH_FORMAT "])",
uid, sup->uid);
printf("\n");
return res;
}
