*/
#include <stdio.h>
+#include <math.h>
#include "ly-module.hh"
#include "main.hh"
#include "paper-score.hh"
#include "stencil.hh"
-// WIP -- simplistic page interface
-// Do we need this at all? SCM, smob?
+static Real const MIN_COVERAGE = 0.66;
+static Real const MAX_CRAMP = 0.05;
+
+static SCM
+stencil2line (Stencil* stil)
+{
+ static SCM z;
+ if (!z)
+ z = scm_permanent_object (ly_offset2scm (Offset (0, 0)));
+ Offset dim = Offset (stil->extent (X_AXIS).length (),
+ stil->extent (Y_AXIS).length ());
+ return scm_cons (ly_offset2scm (dim),
+ scm_list_1 (scm_cons (z, stil->smobbed_copy ())));
+}
+
+static SCM
+title2line (Stencil* stil)
+{
+ SCM s = stencil2line (stil);
+ /* whugh, add marker recognise titles. */
+ return scm_cons (scm_cons (ly_symbol2scm ("title"), ly_car (s)), ly_cdr (s));
+}
+
+/* Simplistic page interface */
class Page
{
public:
Paper_def *paper_;
-
- SCM lines_;
- Stencil *header_;
- Stencil *footer_;
+ static int page_count_;
+ int number_;
+ int line_count_;
+
+ Protected_scm lines_;
+ Protected_scm header_;
+ Protected_scm footer_;
+ Protected_scm copyright_;
+ Protected_scm tagline_;
+
+ Stencil *get_header () { return unsmob_stencil (header_); }
+ Stencil *get_copyright () { return unsmob_stencil (copyright_); }
+ Stencil *get_tagline () { return unsmob_stencil (tagline_); }
+ Stencil *get_footer () { return unsmob_stencil (footer_); }
/* actual height filled with text. */
Real height_;
- //HMMM all this size stuff to paper/paper-outputter?
+ // HMMM all this size stuff to paper/paper-outputter?
Real hsize_;
Real vsize_;
+ Real left_margin_;
+ Real top_margin_;
+ Real bottom_margin_;
Real foot_sep_;
Real head_sep_;
+ Real text_width_;
/* available area for text. */
Real text_height ();
- Page (Paper_def*);
+ Page (Paper_def*, int);
void output (Paper_outputter*, bool);
};
-Page::Page (Paper_def *paper)
+int Page::page_count_ = 0;
+
+Page::Page (Paper_def *paper, int number)
{
paper_ = paper;
+ number_ = number;
+ page_count_++;
+
height_ = 0;
- header_ = 0;
- footer_ = 0;
lines_ = SCM_EOL;
-
+ line_count_ = 0;
+
hsize_ = paper->get_realvar (ly_symbol2scm ("hsize"));
vsize_ = paper->get_realvar (ly_symbol2scm ("vsize"));
- head_sep_ = 0; //paper->get_realvar (ly_symbol2scm ("head-sep"));
- foot_sep_ = 0; //paper->get_realvar (ly_symbol2scm ("foot-sep"));
+ top_margin_ = paper->get_realvar (ly_symbol2scm ("top-margin"));
+ bottom_margin_ = paper->get_realvar (ly_symbol2scm ("bottom-margin"));
+ head_sep_ = paper->get_realvar (ly_symbol2scm ("head-sep"));
+ foot_sep_ = paper->get_realvar (ly_symbol2scm ("foot-sep"));
+ text_width_ = paper->get_realvar (ly_symbol2scm ("linewidth"));
+ left_margin_ = (hsize_ - text_width_) / 2;
+
+ copyright_ = SCM_EOL;
+ tagline_ = SCM_EOL;
+
+ SCM make_header = scm_primitive_eval (ly_symbol2scm ("make-header"));
+ SCM make_footer = scm_primitive_eval (ly_symbol2scm ("make-footer"));
+
+ header_ = scm_call_2 (make_header, paper_->smobbed_copy (),
+ scm_int2num (number_));
+ // FIXME: why does this (generates Stencil) not trigger font load?
+ if (get_header ())
+ get_header ()->align_to (Y_AXIS, UP);
+
+ footer_ = scm_call_2 (make_footer, paper_->smobbed_copy (),
+ scm_int2num (number_));
+ if (get_footer ())
+ get_footer ()->align_to (Y_AXIS, UP);
}
void
Page::output (Paper_outputter *out, bool is_last)
{
- // TODO: header/footer etc
+ progress_indication ("[" + to_string (number_));
out->output_scheme (scm_list_1 (ly_symbol2scm ("start-page")));
+ Offset o (left_margin_, top_margin_);
+ Real vfill = line_count_ > 1 ? (text_height () - height_) / (line_count_ - 1)
+ : 0;
+
+ Real coverage = height_ / text_height ();
+ if (coverage < MIN_COVERAGE)
+ /* Do not space out a badly filled page. This is too simplistic
+ (ie broken), because this should not vary too much between
+ (subsequent?) pages in a book. */
+ vfill = 0;
+
+ if (get_header ())
+ {
+ out->output_line (stencil2line (get_header ()), &o, false);
+ o[Y_AXIS] += head_sep_;
+ }
for (SCM s = lines_; gh_pair_p (s); s = ly_cdr (s))
- out->output_line (ly_car (s), is_last && gh_pair_p (ly_cdr (s)));
+ {
+ SCM line = ly_car (s);
+ SCM offset = ly_car (line);
+ if (ly_car (offset) == ly_symbol2scm ("title"))
+ line = scm_cons (ly_cdr (offset), ly_cdr (line));
+ out->output_line (line, &o,
+ is_last && gh_pair_p (ly_cdr (s)) && !get_copyright ()
+ && !get_tagline () && !get_footer ());
+ if (gh_pair_p (ly_cdr (s)) && ly_car (offset) != ly_symbol2scm ("title"))
+ o[Y_AXIS] += vfill;
+ }
+
+#if 0
+ if (get_copyright () || get_tagline () || get_footer ())
+ o[Y_AXIS] += foot_sep_;
+#else
+ o[Y_AXIS] = vsize_ - bottom_margin_;
+ if (get_copyright ())
+ o[Y_AXIS] -= get_copyright ()->extent (Y_AXIS).length ();
+ if (get_tagline ())
+ o[Y_AXIS] -= get_tagline ()->extent (Y_AXIS).length ();
+ if (get_footer ())
+ o[Y_AXIS] -= get_footer ()->extent (Y_AXIS).length ();
+#endif
+
+ if (get_copyright ())
+ out->output_line (stencil2line (get_copyright ()), &o,
+ is_last && !get_tagline () && !get_footer ());
+ if (get_tagline ())
+ out->output_line (stencil2line (get_tagline ()), &o,
+ is_last && !get_footer ());
+ if (get_footer ())
+ out->output_line (stencil2line (get_footer ()), &o, is_last);
out->output_scheme (scm_list_2 (ly_symbol2scm ("stop-page"),
- gh_bool2scm (is_last)));
+ gh_bool2scm (is_last && !get_footer ())));
+ progress_indication ("]");
}
Real
Page::text_height ()
{
- Real h = vsize_;
- if (header_)
- h -= header_->extent (Y_AXIS).length () + head_sep_;
- if (footer_)
- h -= footer_->extent (Y_AXIS).length () + foot_sep_;
+ Real h = vsize_ - top_margin_ - bottom_margin_;
+ if (get_header ())
+ h -= get_header ()->extent (Y_AXIS).length () + head_sep_;
+ if (get_copyright () || get_tagline () || get_footer ())
+ h -= foot_sep_;
+ if (get_copyright ())
+ h -= get_copyright ()->extent (Y_AXIS).length ();
+ if (get_tagline ())
+ h -= get_tagline ()->extent (Y_AXIS).length ();
+ if (get_footer ())
+ h -= get_footer ()->extent (Y_AXIS).length ();
return h;
}
+/****************************************************************/
+/* Current global paper book. Gives default_rendering access from
+ input-file-results. */
Paper_book *paper_book;
Paper_book::Paper_book ()
{
- protect_ = SCM_EOL;
+ copyright_ = SCM_EOL;
+ tagline_ = SCM_EOL;
+
+ smobify_self ();
+}
+
+Paper_book::~Paper_book ()
+{
}
void
Paper_book::output (String outname)
{
+ if (!papers_.size ())
+ return;
+
/* Generate all stencils to trigger font loads. */
Link_array<Page> *pages = get_pages ();
Paper_def *paper = papers_[0];
Paper_outputter *out = paper->get_paper_outputter (outname);
- out->output_metadata (get_scopes (0), paper);
- out->output_header (paper);
+ out->output_header (paper, get_scopes (0), pages->size ());
int page_count = pages->size ();
for (int i = 0; i < page_count; i++)
Stencil*
Paper_book::get_title (int i)
{
- SCM make_title = scm_primitive_eval (ly_symbol2scm ("make-title"));
+ SCM user_title = scm_primitive_eval (ly_symbol2scm ("user-title"));
+ SCM book_title = scm_primitive_eval (ly_symbol2scm ("book-title"));
+ SCM score_title = scm_primitive_eval (ly_symbol2scm ("score-title"));
SCM field = (i == 0 ? ly_symbol2scm ("bookTitle")
: ly_symbol2scm ("scoreTitle"));
- SCM s = ly_modules_lookup (get_scopes (i), field);
+ Stencil *title = 0;
+ SCM scopes = get_scopes (i);
+ SCM s = ly_modules_lookup (scopes, field);
if (s != SCM_UNDEFINED && scm_variable_bound_p (s) == SCM_BOOL_T)
- return unsmob_stencil (gh_call2 (make_title,
- // papers_[i]->self_scm (),
- papers_[0]->self_scm (),
- scm_variable_ref (s)));
- return 0;
+ title = unsmob_stencil (scm_call_2 (user_title,
+ papers_[0]->self_scm (),
+ scm_variable_ref (s)));
+ else
+ title = unsmob_stencil (scm_call_2 (i == 0 ? book_title : score_title,
+ papers_[0]->self_scm (),
+ scopes));
+ if (title)
+ title->align_to (Y_AXIS, UP);
+
+ return title;
}
-/*
- WIP
-
- FIXME: titling is broken.
-
- TODO:
- * ->SCM?
- * decent page breaking algorithm
- * header / footer (generate per Page, with page#)
- * override: # pages, or pageBreakLines= #'(3 3 4), ?
- * what about between-system-breaking, can we junk that?
-
-*/
-Link_array<Page>*
-Paper_book::get_pages ()
+/* calculate book height, #lines, stencils. */
+void
+Paper_book::init ()
{
- Link_array<Page> *pages = new Link_array<Page>;
int score_count = scores_.size ();
/* Calculate the full book height. Hmm, can't we cache system
heights while making stencils? */
- Real book_height = 0;
+ height_ = 0;
for (int i = 0; i < score_count; i++)
{
Stencil *title = get_title (i);
if (title)
- book_height += title->extent (Y_AXIS).length ();
+ height_ += title->extent (Y_AXIS).length ();
int line_count = SCM_VECTOR_LENGTH ((SCM) scores_[i]);
for (int j = 0; j < line_count; j++)
{
SCM line = scm_vector_ref ((SCM) scores_[i], scm_int2num (j));
- book_height += ly_scm2offset (ly_car (line))[Y_AXIS];
+ height_ += ly_scm2offset (ly_car (line))[Y_AXIS];
}
}
Paper_def *paper = papers_[0];
- Page *page = new Page (paper);
- fprintf (stderr, "book_height: %f\n", book_height);
- fprintf (stderr, "vsize: %f\n", page->vsize_);
- fprintf (stderr, "pages: %f\n", book_height / page->text_height ());
+ SCM scopes = get_scopes (0);
+
+ SCM make_tagline = scm_primitive_eval (ly_symbol2scm ("make-tagline"));
+ tagline_ = scm_call_2 (make_tagline, paper->smobbed_copy (), scopes);
+ Real tag_height = 0;
+ if (Stencil *s = unsmob_stencil (tagline_))
+ tag_height = s->extent (Y_AXIS).length ();
+ height_ += tag_height;
+
+ SCM make_copyright = scm_primitive_eval (ly_symbol2scm ("make-copyright"));
+ copyright_ = scm_call_2 (make_copyright, paper->smobbed_copy (), scopes);
+ Real copy_height = 0;
+ if (Stencil *s = unsmob_stencil (copyright_))
+ copy_height = s->extent (Y_AXIS).length ();
+ height_ += copy_height;
+}
+
+/* Ideas:
+ - real page breaking algorithm (Gourlay?)
+ Hmmughr, Gourlay uses Grobs, columns etc -- looks like it needs serious
+ refactoring before it can be applied to Page breaking...
+ - override: # pages, or pageBreakLines= #'(3 3 4), ? */
+Link_array<Page>*
+Paper_book::get_pages ()
+{
+ init ();
+ Page::page_count_ = 0;
+ Paper_def *paper = papers_[0];
+ Page *page = new Page (paper, 1);
- /* Simplistic page breaking. */
+ Real text_height = page->text_height ();
+ Real page_frac = height_ / text_height;
+ int page_count = (int) ceil (page_frac);
+ if (unsmob_stencil (copyright_))
+ page->copyright_ = copyright_;
+ if (unsmob_stencil (tagline_) && page_count == 1)
+ page->tagline_ = tagline_;
+
+ /* Attempt to fill pages better using FUDGE kludge. */
+ Real r = page_frac - (int) page_frac;
+ Real cramp_fudge = page_count > 1 ? (r / (page_count - 1)) * text_height : 0;
+ Real expand_fudge = - ((1 - r) / page_count) * text_height;
+
+ Link_array<Page>* pages = 0;
+ if ((page_count > 1 && (r / (page_count - 1)) < MAX_CRAMP))
+ {
+ /* Just a little more space (<MAX_CRAMP) per page is needed,
+ cramp onto one page less. */
+ pages = fill_pages (page, page_count - 1, cramp_fudge);
+ if (pages->size () != page_count - 1)
+ {
+ /* Cramping failed. */
+ page = pages->get (0);
+ delete pages;
+ pages = 0;
+ }
+ }
+ if (!pages && ((1 - r) / page_count) < 1 - MIN_COVERAGE)
+ {
+ /* There is space left, but not so much that paged would have too
+ little blackness (< MIN_COVERAGE), distribute evenly. */
+ pages = fill_pages (page, page_count, expand_fudge);
+ bool badly_covered = false;
+ if (pages->size () == page_count)
+ for (int i = 0; i < page_count; i++)
+ {
+ Page *p = (*pages)[i];
+ Real coverage = p ->height_ / p->text_height ();
+ if (coverage < MIN_COVERAGE)
+ {
+ badly_covered = true;
+ break;
+ }
+ }
+ if (pages->size () != page_count || badly_covered)
+ {
+ /* expanding failed. */
+ page = pages->get (0);
+ delete pages;
+ pages = 0;
+ }
+ }
+
+ if (!pages)
+ /* Fudging failed; just fill pages. */
+ pages = fill_pages (page, page_count, 0);
+ return pages;
+}
+
+/* Simplistic page breaking:
+ add lines until HEIGHT > PAGE.TEXT_HEIGHT_ + FUDGE */
+Link_array<Page>*
+Paper_book::fill_pages (Page *page, int page_count, Real fudge)
+{
+ int page_number = 1;
+ int score_count = scores_.size ();
+ Paper_def *paper = papers_[0];
+ Link_array<Page> *pages = new Link_array<Page>;
+ page->lines_ = SCM_EOL;
+ page->height_ = 0;
+ page->line_count_ = 0;
Real text_height = page->text_height ();
for (int i = 0; i < score_count; i++)
{
- Stencil *title = get_title (i);
- if (title)
- book_height += title->extent (Y_AXIS).length ();
Real h = 0;
+ Stencil *title = get_title (i);
if (title)
h = title->extent (Y_AXIS).length ();
{
SCM line = scm_vector_ref ((SCM) scores_[i], scm_int2num (j));
h += ly_scm2offset (ly_car (line))[Y_AXIS];
- if (page->height_ + h > text_height)
+ Real fill = (page->height_ - text_height) / text_height;
+ // Real fill_h = (page->height_ + h - text_height) / text_height;
+ Real fudged_fill = (page->height_ - (text_height + fudge))
+ / (text_height + fudge);
+ Real fudged_fill_h = ((page->height_ + h) - (text_height + fudge))
+ / (text_height + fudge);
+ if (fill > -MAX_CRAMP
+ || (fudged_fill > -MAX_CRAMP
+ && (fudge < 0
+ || !(fudged_fill_h > 0
+ && abs (fudged_fill_h) < 4 * abs (fudged_fill)))))
{
pages->push (page);
- page = new Page (paper);
- }
- if (page->height_ + h <= text_height || page->height_ == 0)
- {
- if (j == 0 && title)
- page->lines_
- = ly_snoc (scm_cons (ly_offset2scm (Offset (0, 0)),
- scm_list_1
- (scm_cons
- (ly_offset2scm (Offset (0, 0)),
- title->smobbed_copy ()))),
- page->lines_);
- page->lines_ = ly_snoc (line, page->lines_);
- page->height_ += h;
- h = 0;
+ page = new Page (paper, ++page_number);
+ if (unsmob_stencil (tagline_) && page_number == page_count)
+ page->tagline_ = tagline_;
+ text_height = page->text_height ();
}
+ if (j == 0 && title)
+ page->lines_ = ly_snoc (title2line (title), page->lines_);
+ page->lines_ = ly_snoc (line, page->lines_);
+ page->line_count_++;
+ page->height_ += h;
+ h = 0;
}
}
-
+
pages->push (page);
return pages;
}
void
Paper_book::classic_output (String outname)
{
- Paper_outputter *out = papers_.top ()->get_paper_outputter (outname);
int count = scores_.size ();
-
- out->output_metadata (get_scopes (count - 1), papers_.top ());
- out->output_header (papers_.top ());
+ Paper_outputter *out = papers_.top ()->get_paper_outputter (outname);
+ out->output_header (papers_.top (), get_scopes (count - 1), 0);
int line_count = SCM_VECTOR_LENGTH ((SCM) scores_.top ());
for (int i = 0; i < line_count; i++)
out->output_line (scm_vector_ref ((SCM) scores_.top (), scm_int2num (i)),
- i == line_count - 1);
+ 0, i == line_count - 1);
out->output_scheme (scm_list_1 (ly_symbol2scm ("end-output")));
progress_indication ("\n");
#include "ly-smobs.icc"
IMPLEMENT_DEFAULT_EQUAL_P (Paper_book);
-IMPLEMENT_SIMPLE_SMOBS (Paper_book)
-IMPLEMENT_TYPE_P (Paper_book, "ly:paper_book?")
+IMPLEMENT_SMOBS (Paper_book)
+IMPLEMENT_TYPE_P (Paper_book, "ly:paper-book?")
SCM
-Paper_book::mark_smob (SCM)
+Paper_book::mark_smob (SCM smob)
{
- return SCM_EOL;
+ Paper_book *pb = (Paper_book*) SCM_CELL_WORD_1 (smob);
+ for (int i = 0; i < pb->headers_.size (); i++)
+ scm_gc_mark (pb->headers_[i]);
+ for (int i = 0; i < pb->global_headers_.size (); i++)
+ scm_gc_mark (pb->global_headers_[i]);
+ for (int i = 0; i < pb->papers_.size (); i++)
+ scm_gc_mark (pb->papers_[i]->self_scm ());
+ for (int i = 0; i < pb->scores_.size (); i++)
+ scm_gc_mark (pb->scores_[i]);
+
+ scm_gc_mark (pb->copyright_);
+
+
+ return pb->tagline_;
}
int
scm_puts (">", port);
return 1;
}
-
-SCM
-Paper_book::smobbed_copy () const
-{
- Paper_book *b = new Paper_book (*this);
- return b->smobbed_self ();
-}
projects / lilypond.git / blobdiff