-/*
+/*
note-spacing.cc -- implement Note_spacing
source file of the GNU LilyPond music typesetter
#include "output-def.hh"
/*
-
-TODO: detect hshifts due to collisions, and account for them in
-spacing?
-
-*/
+ TODO: detect hshifts due to collisions, and account for them in
+ spacing?
+*/
void
-Note_spacing::get_spacing (Grob *me, Item* right_col,
+Note_spacing::get_spacing (Grob *me, Item *right_col,
Real base_space, Real increment, Real *space, Real *fixed)
{
Drul_array<SCM> props (me->get_property ("left-items"),
- me->get_property ("right-items"));
+ me->get_property ("right-items"));
Direction d = LEFT;
- Direction col_dir = right_col->break_status_dir ();
+ Direction col_dir = right_col->break_status_dir ();
Drul_array<Interval> extents;
- Interval left_head_wid;
+ Interval left_head_wid;
do
{
- for (SCM s = props[d]; scm_is_pair (s); s = scm_cdr (s))
+ for (SCM s = props[d]; scm_is_pair (s); s = scm_cdr (s))
{
- Item * it = dynamic_cast<Item*> (unsmob_grob (scm_car (s)));
-
+ Item *it = dynamic_cast<Item *> (unsmob_grob (scm_car (s)));
+
if (d == RIGHT && it->break_status_dir () != col_dir)
{
it = it -> find_prebroken_piece (col_dir);
/*
some kind of mismatch, eg. a note column, that is behind a
linebreak.
- */
+ */
if (!it)
- continue;
+ continue;
Item *it_col = it->get_column ();
if (d == RIGHT && right_col != it_col)
continue;
-
+
if (Separation_item::has_interface (it))
{
extents[d].unite (Separation_item::width (it));
if (d == LEFT)
{
SCM r = it->get_property ("rest");
- Grob * g = unsmob_grob (r);
+ Grob *g = unsmob_grob (r);
if (!g)
- g = Note_column::first_head (it);
+ g = Note_column::first_head (it);
/*
Ugh. If Stem is switched off, we don't know what the
first note head will be.
- */
+ */
if (g)
left_head_wid = g->extent (it_col, X_AXIS);
}
-
+
extents[d].unite (it->extent (it_col, X_AXIS));
if (d == RIGHT)
{
- Grob * accs = Note_column::accidentals (it);
+ Grob *accs = Note_column::accidentals (it);
if (!accs)
accs = Note_column::accidentals (it->get_parent (X_AXIS));
-
+
if (accs)
{
- Interval v =
- Accidental_placement::get_relevant_accidental_extent (accs, it_col, me);
-
+ Interval v
+ = Accidental_placement::get_relevant_accidental_extent (accs, it_col, me);
+
extents[d].unite (v);
}
}
}
while (flip (&d) != LEFT);
-
/*
We look at the width of the note head, since smaller heads get less space
eg. a quarter rest gets almost 0.5 ss less horizontal space than a note.
FIXED also includes the left part of the right object.
*/
- *fixed =
- (left_head_wid.is_empty () ? increment :
- /*
- Size of the head:
- */
- (left_head_wid[RIGHT]+
+ *fixed
+ = (left_head_wid.is_empty () ? increment :
+ /*
+ Size of the head:
+ */
+ (left_head_wid[RIGHT]+
- /*
- What's sticking out of the head, eg. a flag:
- */
- (extents[LEFT][RIGHT] - left_head_wid[RIGHT])/2))
+ /*
+ What's sticking out of the head, eg. a flag:
+ */
+ (extents[LEFT][RIGHT] - left_head_wid[RIGHT]) / 2))
/*
What is sticking out of the right note:
- */
- + (extents[RIGHT].is_empty () ? 0.0 : - extents[RIGHT][LEFT] / 2);
+ */
+ + (extents[RIGHT].is_empty () ? 0.0 : - extents[RIGHT][LEFT] / 2);
/*
We don't do complicated stuff: (base_space - increment) is the
normal amount of white, which also determines the amount of
stretch. Upon (extreme) stretching, notes with accidentals should
stretch as much as notes without accidentals.
- */
- *space = (base_space - increment) + *fixed ;
+ */
+ *space = (base_space - increment) + *fixed;
if (!extents[RIGHT].is_empty ()
&& (Item::is_breakable (right_col)
Since we only take half of the right-object space above, the
barline will bump into the notes preceding it, if the right
thing is big. We add the rest of the extents here:
- */
-
+ */
+
*space += -extents[RIGHT][LEFT] / 2;
*fixed += -extents[RIGHT][LEFT] / 2;
}
-
+
stem_dir_correction (me, right_col, increment, space, fixed);
}
{
if (!me->is_live ())
return 0;
-
- return dynamic_cast<Item*> (me)->get_column ();
+
+ return dynamic_cast<Item *> (me)->get_column ();
}
/*
Compute the column of the right-items. This is a big function,
-since RIGHT-ITEMS may span more columns (eg. if a clef if inserted,
-this will add a new columns to RIGHT-ITEMS. Here we look at the
-columns, and return the left-most. If there are multiple columns, we
-prune RIGHT-ITEMS.
-
- */
+ since RIGHT-ITEMS may span more columns (eg. if a clef if inserted,
+ this will add a new columns to RIGHT-ITEMS. Here we look at the
+ columns, and return the left-most. If there are multiple columns, we
+ prune RIGHT-ITEMS.
+*/
Item *
-Note_spacing::right_column (Grob*me)
+Note_spacing::right_column (Grob *me)
{
if (!me->is_live ())
return 0;
-
+
SCM right = me->get_property ("right-items");
Item *mincol = 0;
int min_rank = INT_MAX;
bool prune = false;
- for (SCM s = right ; scm_is_pair (s) ; s = scm_cdr (s))
+ for (SCM s = right; scm_is_pair (s); s = scm_cdr (s))
{
- Item * ri = unsmob_item (scm_car (s));
+ Item *ri = unsmob_item (scm_car (s));
- Item * col = ri->get_column ();
+ Item *col = ri->get_column ();
int rank = Paper_column::get_rank (col);
if (rank < min_rank)
mincol = col;
}
}
-
+
if (prune)
{
// I'm a lazy bum. We could do this in-place.
- SCM newright = SCM_EOL;
- for (SCM s = right ; scm_is_pair (s) ; s = scm_cdr (s))
+ SCM newright = SCM_EOL;
+ for (SCM s = right; scm_is_pair (s); s = scm_cdr (s))
{
if (unsmob_item (scm_car (s))->get_column () == mincol)
newright = scm_cons (scm_car (s), newright);
me->set_property ("right-items", newright);
}
-
+
if (!mincol)
{
/*
- int r = Paper_column::get_rank (dynamic_cast<Item*>(me)->get_column ());
- programming_error (_f ("Spacing wish column %d has no right item.", r));
+ int r = Paper_column::get_rank (dynamic_cast<Item*>(me)->get_column ());
+ programming_error (_f ("Spacing wish column %d has no right item.", r));
*/
return 0;
down-stem + up-stem less.
TODO: have to check wether the stems are in the same staff.
-
*/
void
-Note_spacing::stem_dir_correction (Grob*me, Item * rcolumn,
+Note_spacing::stem_dir_correction (Grob *me, Item *rcolumn,
Real increment,
- Real * space, Real *fixed)
+ Real *space, Real *fixed)
{
Drul_array<Direction> stem_dirs (CENTER, CENTER);
Drul_array<Interval> stem_posns;
- Drul_array<Interval> head_posns;
+ Drul_array<Interval> head_posns;
Drul_array<SCM> props (me->get_property ("left-items"),
- me->get_property ("right-items"));
+ me->get_property ("right-items"));
+
+ Drul_array<Spanner *> beams_drul (0, 0);
+ Drul_array<Grob *> stems_drul (0, 0);
- Drul_array<Spanner*> beams_drul (0, 0);
- Drul_array<Grob*> stems_drul (0, 0);
-
stem_dirs[LEFT] = stem_dirs[RIGHT] = CENTER;
Interval intersect;
Interval bar_xextent;
- Interval bar_yextent;
-
+ Interval bar_yextent;
+
bool correct_stem_dirs = true;
Direction d = LEFT;
bool acc_right = false;
-
+
do
{
- for (SCM s = props[d]; scm_is_pair (s); s = scm_cdr (s))
+ for (SCM s = props[d]; scm_is_pair (s); s = scm_cdr (s))
{
- Item * it = dynamic_cast<Item*> (unsmob_grob (scm_car (s)));
+ Item *it = dynamic_cast<Item *> (unsmob_grob (scm_car (s)));
if (d == RIGHT)
acc_right = acc_right || Note_column::accidentals (it);
-
+
Grob *stem = Note_column::get_stem (it);
if (!stem || !stem->is_live ())
{
it = it->find_prebroken_piece (rcolumn->break_status_dir ());
}
-
+
Grob *last = Separation_item::extremal_break_aligned_grob (it, LEFT, &bar_xextent);
if (last)
break;
}
- return ;
+ return;
}
-
+
if (Stem::is_invisible (stem))
{
correct_stem_dirs = false;
stems_drul[d] = stem;
beams_drul[d] = Stem::get_beam (stem);
-
+
Direction sd = Stem::get_direction (stem);
if (stem_dirs[d] && stem_dirs[d] != sd)
{
/*
Correction doesn't seem appropriate when there is a large flag
hanging from the note.
- */
+ */
if (d == LEFT
- && Stem::duration_log (stem) > 2 && !Stem::get_beam (stem))
+ && Stem::duration_log (stem) > 2 && !Stem::get_beam (stem))
{
correct_stem_dirs = false;
}
-
- Interval hp = Stem::head_positions (stem);
- if (!hp.is_empty())
+
+ Interval hp = Stem::head_positions (stem);
+ if (!hp.is_empty ())
{
- Real chord_start = hp[sd];
+ Real chord_start = hp[sd];
Real stem_end = Stem::stem_end_position (stem);
-
+
stem_posns[d] = Interval (chord_start <? stem_end, chord_start>? stem_end);
head_posns[d].unite (hp);
}
}
}
while (flip (&d) != LEFT);
-
/*
don't correct if accidentals are sticking out of the right side.
*/
if (acc_right)
- return ;
+ return;
Real correction = 0.0;
if (!bar_yextent.is_empty ())
{
- stem_dirs[RIGHT] = - stem_dirs[LEFT];
+ stem_dirs[RIGHT] = -stem_dirs[LEFT];
stem_posns[RIGHT] = bar_yextent;
}
-
+
if (correct_stem_dirs && stem_dirs[LEFT] *stem_dirs[RIGHT] == -1)
{
if (beams_drul[LEFT] && beams_drul[LEFT] == beams_drul[RIGHT])
{
-
+
/*
this is a knee: maximal correction.
*/
Real note_head_width = increment;
- Grob * st = stems_drul[RIGHT];
- Grob * head = st ? Stem::support_head (st) : 0;
+ Grob *st = stems_drul[RIGHT];
+ Grob *head = st ? Stem::support_head (st) : 0;
Interval head_extent;
if (head)
}
else
{
- intersect = stem_posns[LEFT];
+ intersect = stem_posns[LEFT];
intersect.intersect (stem_posns[RIGHT]);
correct_stem_dirs = correct_stem_dirs && !intersect.is_empty ();
{
correction = abs (intersect.length ());
-
/*
Ugh. 7 is hardcoded.
*/
- correction = (correction/7) <? 1.0;
- correction *= stem_dirs[LEFT] ;
- correction *=
- robust_scm2double (me->get_property ("stem-spacing-correction"), 0);
+ correction = (correction / 7) <? 1.0;
+ correction *= stem_dirs[LEFT];
+ correction
+ *= robust_scm2double (me->get_property ("stem-spacing-correction"), 0);
}
-
+
if (!bar_yextent.is_empty ())
{
correction *= 0.5;
/*
Correct for the following situation:
- X X
- | |
+ X X
+ | |
| |
| X |
| | |
========
- ^ move the center one to the left.
-
+ ^ move the center one to the left.
+
this effect seems to be much more subtle than the
stem-direction stuff (why?), and also does not scale with the
difference in stem length.
-
- */
-
+ */
+
Interval hp = head_posns[LEFT];
- hp.intersect (head_posns[RIGHT]);
+ hp.intersect (head_posns[RIGHT]);
if (!hp.is_empty ())
- return ;
+ return;
- Direction lowest =
- (head_posns[LEFT][DOWN] > head_posns[RIGHT][UP]) ? RIGHT : LEFT;
+ Direction lowest
+ = (head_posns[LEFT][DOWN] > head_posns[RIGHT][UP]) ? RIGHT : LEFT;
- Real delta = head_posns[-lowest][DOWN] - head_posns[lowest][UP] ;
+ Real delta = head_posns[-lowest][DOWN] - head_posns[lowest][UP];
Real corr = robust_scm2double (me->get_property ("stem-spacing-correction"), 0);
- corr = (delta <= 1) ? 0.0 : 0.25;
-
- correction = -lowest * corr ;
+ corr = (delta <= 1) ? 0.0 : 0.25;
+
+ correction = -lowest * corr;
}
*space += correction;
*/
}
-
-
ADD_INTERFACE (Note_spacing, "note-spacing-interface",
- "This object calculates spacing wishes for individual voices.",
- "left-items right-items stem-spacing-correction knee-spacing-correction");
+ "This object calculates spacing wishes for individual voices.",
+ "left-items right-items stem-spacing-correction knee-spacing-correction");
projects / lilypond.git / blobdiff