#include "prob.hh"
#include "skyline-pair.hh"
#include "system.hh"
+#include "text-interface.hh"
+
+/*
+ Returns a stencil for the footnote of each system. This stencil may
+ itself be comprised of several footnotes.
+*/
+
+SCM
+Page_layout_problem::get_footnotes_from_lines (SCM lines, Real padding)
+{
+ SCM footnotes = SCM_EOL;
+ // ugh...code dup from the Page_layout_problem constructor
+ for (SCM s = lines; scm_is_pair (s); s = scm_cdr (s))
+ {
+ if (Grob *g = unsmob_grob (scm_car (s)))
+ {
+ System *sys = dynamic_cast<System *> (g);
+ if (!sys)
+ {
+ programming_error ("got a grob for footnotes that wasn't a System");
+ continue;
+ }
+ footnotes = scm_cons (sys->make_footnote_stencil (padding).smobbed_copy (), footnotes);
+ }
+ else if (Prob *p = unsmob_prob (scm_car (s)))
+ {
+ SCM stencils = p->get_property ("footnotes");
+ if (stencils == SCM_EOL)
+ continue;
+ Stencil footnote_stencil;
+
+ for (SCM st = stencils; scm_is_pair (st); st = scm_cdr (st))
+ footnote_stencil.add_at_edge (Y_AXIS, DOWN, *unsmob_stencil (scm_car (st)), padding);
+ footnotes = scm_cons (footnote_stencil.smobbed_copy (), footnotes);
+ }
+ }
+
+ if (!scm_is_pair (footnotes))
+ return SCM_EOL;
+
+ return scm_reverse (footnotes);
+}
+
+Stencil*
+Page_layout_problem::get_footnote_separator_stencil (Output_def *paper)
+{
+ SCM props = scm_call_1 (ly_lily_module_constant ("layout-extract-page-properties"),
+ paper->self_scm ());
+
+ SCM markup = paper->c_variable ("footnote-separator-markup");
+
+ if (!Text_interface::is_markup (markup))
+ return NULL;
+
+ SCM footnote_stencil = Text_interface::interpret_markup (paper->self_scm (),
+ props, markup);
+
+ Stencil *footnote_separator = unsmob_stencil (footnote_stencil);
+
+ return footnote_separator;
+}
+
+void
+Page_layout_problem::add_footnotes_to_footer (SCM footnotes, Stencil *foot, Paper_book *pb)
+{
+ bool footnotes_found = false;
+ Real footnote_padding = robust_scm2double (pb->paper_->c_variable ("footnote-padding"), 0.0);
+ Real footnote_footer_padding = robust_scm2double (pb->paper_->c_variable ("footnote-footer-padding"), 0.0);
+
+ footnotes = scm_reverse (footnotes);
+
+ for (SCM s = footnotes; scm_is_pair (s); s = scm_cdr (s))
+ {
+ Stencil *stencil = unsmob_stencil (scm_car (s));
+
+ if (!stencil)
+ continue;
+
+ if (!stencil->is_empty ())
+ {
+ foot->add_at_edge (Y_AXIS, UP, *stencil, (!footnotes_found ? footnote_footer_padding : footnote_padding));
+ footnotes_found = true;
+ }
+ }
+
+ if (footnotes_found)
+ {
+ Stencil *separator = get_footnote_separator_stencil (pb->paper_);
+ if (separator)
+ foot->add_at_edge (Y_AXIS, UP, *separator, footnote_padding);
+ }
+}
Page_layout_problem::Page_layout_problem (Paper_book *pb, SCM page_scm, SCM systems)
: bottom_skyline_ (DOWN)
{
Stencil *head = unsmob_stencil (page->get_property ("head-stencil"));
Stencil *foot = unsmob_stencil (page->get_property ("foot-stencil"));
-
+
+ Real footnote_padding = 0.0;
+ if (pb && pb->paper_)
+ footnote_padding = robust_scm2double (pb->paper_->c_variable ("footnote-padding"), 0.0);
+ SCM footnotes = get_footnotes_from_lines (systems, footnote_padding);
+ add_footnotes_to_footer (footnotes, foot, pb);
+
header_height_ = head ? head->extent (Y_AXIS).length () : 0;
footer_height_ = foot ? foot->extent (Y_AXIS).length () : 0;
page_height_ = robust_scm2double (page->get_property ("paper-height"), 100);
springs_.push_back (spring_copy);
bottom_skyline_ = down_skyline;
- elements_.push_back (Element (elts, minimum_offsets));
+ elements_.push_back (Element (elts, minimum_offsets, padding));
// Add the springs for the VerticalAxisGroups in this system.
alter_spring_from_spacing_spec (spec, &spring);
springs_.push_back (spring);
- Real min_distance = (found_spaceable_staff ? minimum_offsets[last_spaceable_staff] : 0) - minimum_offsets[i];
+ Real min_distance = (found_spaceable_staff ? minimum_offsets_with_min_dist[last_spaceable_staff] : 0) - minimum_offsets_with_min_dist[i];
springs_.back ().ensure_min_distance (min_distance);
if (scm_is_pair (manual_dists))
spring_copy.ensure_min_distance (minimum_distance + padding);
springs_.push_back (spring_copy);
- elements_.push_back (Element (prob));
+ elements_.push_back (Element (prob, padding));
}
void
Real overflow = spacer.configuration_length (spacer.force ())
- page_height_;
if (ragged && overflow < 1e-6)
- warning (_ ("couldn't fit music on page: ragged-spacing was requested, but page was compressed"));
+ warning (_ ("cannot fit music on page: ragged-spacing was requested, but page was compressed"));
else
{
- warning (_f ("couldn't fit music on page: overflow is %f",
+ warning (_f ("cannot fit music on page: overflow is %f",
overflow));
warning (_ ("compressing music to fit"));
vsize space_count = solution_.size ();
if (loose_lines.size ())
{
Interval loose_extent = loose_lines.back ()->extent (loose_lines.back (), Y_AXIS);
- Real min_distance = -loose_extent[DOWN] + prob_extent[UP]; // TODO: include padding/minimum-distance
+ Real min_distance = (-loose_extent[DOWN] + prob_extent[UP]
+ + elements_[i].padding);
loose_line_min_distances.push_back (min_distance);
loose_lines.push_back (0);
// the last one.
if (loose_lines.size ())
{
- loose_line_min_distances.push_back (min_offsets[staff_idx-1] - min_offsets[staff_idx]);
+ if (staff_idx)
+ loose_line_min_distances.push_back (min_offsets[staff_idx-1] - min_offsets[staff_idx]);
+ else
+ loose_line_min_distances.push_back (elements_[i].padding - min_offsets[staff_idx]);
loose_lines.push_back (staff);
distribute_loose_lines (loose_lines, loose_line_min_distances,
loose_line_min_distances.clear ();
}
last_spaceable_line = staff;
- // Negative is down but the translation is relative to the whole page.
- last_spaceable_line_translation = -system_position + translation;
+ last_spaceable_line_translation = -solution_[spring_idx - 1];
staff->translate_axis (translation, Y_AXIS);
found_spaceable_staff = true;
loose_lines.push_back (last_spaceable_line);
if (staff_idx)
+ // NOTE: the way we do distances between loose lines (and other lines too, actually)
+ // is not the most accurate way possible: we only insert rods between adjacent
+ // lines. To be more accurate, we could insert rods between non-adjacent lines
+ // using a scheme similar to the one in set_column_rods.
loose_line_min_distances.push_back (min_offsets[staff_idx-1] - min_offsets[staff_idx]);
else
- {
+ { // this is the first line in a system
Real min_dist = 0;
if (loose_lines.back ())
- min_dist = Axis_group_interface::minimum_distance (loose_lines.back (),
- staff,
- Y_AXIS);
+ // distance to the final line in the preceding system,
+ // including 'system-system-spacing 'padding
+ min_dist = (Axis_group_interface::minimum_distance (loose_lines.back (),
+ staff,
+ Y_AXIS)
+ + elements_[i].padding);
else if (!last_title_extent.is_empty ())
- { // distance to the preceding title
- // TODO: add options for controlling the space between a loose line
- // and a title/markup preceding it.
- min_dist = staff->extent (staff, Y_AXIS)[UP] - last_title_extent[DOWN];
- }
+ // distance to the preceding title,
+ // including 'markup-system-spacing 'padding
+ min_dist = (staff->extent (staff, Y_AXIS)[UP] - last_title_extent[DOWN]
+ + elements_[i].padding);
else // distance to the top margin
min_dist = header_padding_ + header_height_ + staff->extent (staff, Y_AXIS)[UP];
Real
Page_layout_problem::get_fixed_spacing (Grob *before, Grob *after, int spaceable_index, bool pure, int start, int end)
{
+ Spanner *after_sp = dynamic_cast<Spanner*> (after);
+ SCM cache_symbol = (is_spaceable (before) && is_spaceable (after))
+ ? ly_symbol2scm ("spaceable-fixed-spacing")
+ : ly_symbol2scm ("loose-fixed-spacing");
+ if (pure)
+ {
+ // The result of this function doesn't depend on "end," so we can reduce the
+ // size of the cache by ignoring it.
+ SCM cached = after_sp->get_cached_pure_property (cache_symbol, start, 0);
+ if (scm_is_number (cached))
+ return robust_scm2double (cached, 0.0);
+ }
+
SCM spec = Page_layout_problem::get_spacing_spec (before, after, pure, start, end);
Real ret = -infinity_f;
Real stretchability = 0;
ret = max (ret, scm_to_double (forced));
}
}
+
+ // Cache the result. As above, we ignore "end."
+ if (pure)
+ after_sp->cache_pure_property (cache_symbol, start, 0, scm_from_double (ret));
+
return ret;
}
{
Direction before_affinity = to_dir (before->get_maybe_pure_property ("staff-affinity", pure, start, end));
Direction after_affinity = to_dir (after->get_maybe_pure_property ("staff-affinity", pure, start, end));
- if (after_affinity > before_affinity)
+ static bool warned = false;
+ if (after_affinity > before_affinity
+ && !warned && !pure)
{
warning (_ ("staff-affinities should only decrease"));
- after_affinity = before_affinity;
+ warned = true;
}
if (before_affinity != UP)
return before->get_maybe_pure_property ("nonstaff-nonstaff-spacing", pure, start, end);