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/*
This file is part of LilyPond, the GNU music typesetter.
Copyright (C) 1997--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
LilyPond 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.
LilyPond 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 LilyPond. If not, see <http://www.gnu.org/licenses/>.
*/
#include "context-def.hh"
#include "file-path.hh"
#include "global-context.hh"
#include "international.hh"
#include "interval.hh"
#include "ly-module.hh"
#include "main.hh"
#include "output-def.hh"
#include "scm-hash.hh"
#include "warn.hh"
#include "program-option.hh"
#include "string-convert.hh"
Output_def::Output_def ()
{
scope_ = SCM_EOL;
parent_ = 0;
smobify_self ();
scope_ = ly_make_module (false);
}
Output_def::Output_def (Output_def const &s)
: Smob<Output_def> ()
{
scope_ = SCM_EOL;
parent_ = 0;
smobify_self ();
input_origin_ = s.input_origin_;
scope_ = ly_make_module (false);
if (ly_is_module (s.scope_))
ly_module_copy (scope_, s.scope_);
}
Output_def::~Output_def ()
{
}
SCM
Output_def::mark_smob () const
{
/* FIXME: why is this necessary?
all paper_ should be protected by themselves. */
if (parent_)
scm_gc_mark (parent_->self_scm ());
return scope_;
}
void
assign_context_def (Output_def * m, SCM transdef)
{
Context_def *tp = unsmob<Context_def> (transdef);
assert (tp);
if (tp)
{
SCM sym = tp->get_context_name ();
m->set_variable (sym, transdef);
}
}
/* find the translator for NAME. NAME must be a symbol. */
SCM
find_context_def (Output_def const *m, SCM name)
{
Context_def *cd = unsmob<Context_def> (m->lookup_variable (name));
return cd ? cd->self_scm () : SCM_EOL;
}
int
Output_def::print_smob (SCM p, scm_print_state *) const
{
scm_puts ("#< ", p);
scm_puts (class_name (), p);
scm_puts (">", p);
return 1;
}
Real
Output_def::get_dimension (SCM s) const
{
SCM val = lookup_variable (s);
return scm_to_double (val);
}
SCM
Output_def::lookup_variable (SCM sym) const
{
SCM var = ly_module_lookup (scope_, sym);
if (SCM_VARIABLEP (var) && !SCM_UNBNDP (SCM_VARIABLE_REF (var)))
return SCM_VARIABLE_REF (var);
if (parent_)
return parent_->lookup_variable (sym);
return SCM_UNDEFINED;
}
SCM
Output_def::c_variable (const string &s) const
{
return lookup_variable (ly_symbol2scm (s.c_str ()));
}
void
Output_def::set_variable (SCM sym, SCM val)
{
scm_module_define (scope_, sym, val);
}
void
Output_def::normalize ()
{
Real paper_width;
SCM scm_paper_width = c_variable ("paper-width");
bool twosided = to_boolean (c_variable ("two-sided"));
// We don't distinguish between outer-margin / left-margin and so on
// until page-stencil positioning in page.scm
Real left_margin, left_margin_default;
SCM scm_left_margin_default = (twosided
? c_variable ("outer-margin-default-scaled")
: c_variable ("left-margin-default-scaled"));
SCM scm_left_margin = (twosided
? c_variable ("outer-margin")
: c_variable ("left-margin"));
Real right_margin, right_margin_default;
SCM scm_right_margin_default = (twosided
? c_variable ("inner-margin-default-scaled")
: c_variable ("right-margin-default-scaled"));
SCM scm_right_margin = (twosided
? c_variable ("inner-margin")
: c_variable ("right-margin"));
if (SCM_UNBNDP (scm_paper_width)
|| SCM_UNBNDP (scm_left_margin_default)
|| SCM_UNBNDP (scm_right_margin_default))
{
programming_error ("called normalize () on paper with missing settings");
return;
}
else
{
paper_width = scm_to_double (scm_paper_width);
left_margin_default = scm_to_double (scm_left_margin_default);
right_margin_default = scm_to_double (scm_right_margin_default);
}
Real line_width;
Real line_width_default
= paper_width - left_margin_default - right_margin_default;
SCM scm_line_width = c_variable ("line-width");
Real binding_offset = 0;
if (twosided)
binding_offset = robust_scm2double (c_variable ("binding-offset"), 0);
if (SCM_UNBNDP (scm_line_width))
{
left_margin = (SCM_UNBNDP (scm_left_margin)
? left_margin_default
: scm_to_double (scm_left_margin));
right_margin = (SCM_UNBNDP (scm_right_margin)
? right_margin_default
: scm_to_double (scm_right_margin)) + binding_offset;
line_width = paper_width - left_margin - right_margin;
}
else
{
line_width = scm_to_double (scm_line_width);
if (SCM_UNBNDP (scm_left_margin))
{
// Vertically center systems if only line-width is given
if (SCM_UNBNDP (scm_right_margin))
{
left_margin = (paper_width - line_width) / 2;
right_margin = left_margin;
}
else
{
right_margin = scm_to_double (scm_right_margin) + binding_offset;
left_margin = paper_width - line_width - right_margin;
}
}
else
{
left_margin = scm_to_double (scm_left_margin);
right_margin = (SCM_UNBNDP (scm_right_margin)
? (paper_width - line_width - left_margin)
: scm_to_double (scm_right_margin)) + binding_offset;
}
}
if (to_boolean (c_variable ("check-consistency")))
{
// Consistency checks. If values don't match, set defaults.
if (abs (paper_width - line_width - left_margin - right_margin) > 1e-6)
{
line_width = line_width_default;
left_margin = left_margin_default;
right_margin = right_margin_default;
warning (_ ("margins do not fit with line-width, setting default values"));
}
else if ((left_margin < 0) || (right_margin < 0))
{
line_width = line_width_default;
left_margin = left_margin_default;
right_margin = right_margin_default;
warning (_ ("systems run off the page due to improper paper settings, setting default values"));
}
}
set_variable (ly_symbol2scm ("left-margin"), scm_from_double (left_margin));
set_variable (ly_symbol2scm ("right-margin"), scm_from_double (right_margin));
set_variable (ly_symbol2scm ("line-width"), scm_from_double (line_width));
}
/* FIXME. This is broken until we have a generic way of
putting lists inside the \layout block. */
Interval
line_dimensions_int (Output_def *def, int n)
{
Real lw = def->get_dimension (ly_symbol2scm ("line-width"));
Real ind = n
? def->get_dimension (ly_symbol2scm ("short-indent"))
: def->get_dimension (ly_symbol2scm ("indent"));
return Interval (ind, lw);
}
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