source file of the GNU LilyPond music typesetter
- (c) 2003 Juergen Reuter <reuter@ipd.uka.de>
+ (c) 2003 Juergen Reuter <reuter@ipd.uka.de>
*/
#include "gregorian-ligature-engraver.hh"
Real thickness);
public:
- TRANSLATOR_DECLARATIONS(Vaticana_ligature_engraver);
+ TRANSLATOR_DECLARATIONS (Vaticana_ligature_engraver);
protected:
virtual Spanner *create_ligature_spanner ();
Spanner *
Vaticana_ligature_engraver::create_ligature_spanner ()
{
- return new Spanner (get_property ("VaticanaLigature"));
+ return make_spanner ("VaticanaLigature");
}
bool
return is_stacked_b;
}
-inline int get_context_info (Item *primitive)
+/*
+ * When aligning the heads, sometimes extra space is needed, e.g. to
+ * avoid clashing with the appendix of an adjacent notehead or with an
+ * adjacent notehead itself if it has the same pitch. Extra space is
+ * added at most once between to heads.
+ */
+bool
+need_extra_space (int prev_prefix_set, int prefix_set,
+ int context_info, int delta_pitch)
{
- SCM context_info_scm = primitive->get_grob_property ("context-info");
- if (context_info_scm != SCM_EOL)
- {
- return gh_scm2int (context_info_scm);
- }
- else
- {
- primitive->programming_error ("Vaticana_ligature:"
- "context-info undefined -> "
- "aborting ligature");
- return -1;
- }
+ if (prev_prefix_set & VIRGA)
+ /*
+ * After a virga, make a an additional small space such that the
+ * appendix on the right side of the head does not touch the
+ * following head.
+ */
+ return true;
+
+ if ((prefix_set & INCLINATUM) &&
+ !(prev_prefix_set & INCLINATUM))
+ /*
+ * Always start a series of inclinatum heads with an extra space.
+ */
+ return true;
+
+ if ((context_info & FLEXA_LEFT) && !(context_info & PES_UPPER))
+ /*
+ * Before a flexa (but not within a torculus), make a an
+ * additional small space such that the appendix on the left side
+ * of the flexa does not touch the this head.
+ */
+ return true;
+
+ if (delta_pitch == 0)
+ /*
+ * If there are two adjacent noteheads with the same pitch, add
+ * additional small space between them, such that they do not
+ * touch each other.
+ */
+ return true;
+
+ return false;
}
Real
Real ligature_width = 0.0;
Item *prev_primitive = 0;
+ int prev_prefix_set = 0;
for (int i = 0; i < primitives.size (); i++)
{
Item *primitive = dynamic_cast<Item*> (primitives[i].grob_);
- int context_info;
-
- if ((context_info = get_context_info (primitive)) < 0)
- break; // programming error
+ int prefix_set =
+ gh_scm2int (primitive->get_property ("prefix-set"));
+ int context_info =
+ gh_scm2int (primitive->get_property ("context-info"));
/*
* Get glyph_name, delta_pitch and context_info for this head.
*/
- SCM glyph_name_scm = primitive->get_grob_property ("glyph-name");
+ SCM glyph_name_scm = primitive->get_property ("glyph-name");
if (glyph_name_scm == SCM_EOL)
{
primitive->programming_error ("Vaticana_ligature:"
int delta_pitch = 0;
if (prev_primitive) /* urgh, need prev_primitive only here */
{
- SCM delta_pitch_scm = prev_primitive->get_grob_property ("delta-pitch");
+ SCM delta_pitch_scm = prev_primitive->get_property ("delta-pitch");
if (delta_pitch_scm != SCM_EOL)
{
delta_pitch = gh_scm2int (delta_pitch_scm);
/*
* Save the head's final x-offset.
*/
- primitive->set_grob_property ("x-offset",
+ primitive->set_property ("x-offset",
gh_double2scm (x_offset));
/*
}
else
{
- prev_primitive->set_grob_property ("add-join",
- gh_bool2scm(true));
+ prev_primitive->set_property ("add-join",
+ gh_bool2scm (true));
/*
* Create a small overlap of adjacent heads so that the join
*/
}
- /* Sometimes, extra space is needed, e.g. to avoid clashing with
- the appendix of an adjacent notehead or with an adjacent
- notehead itself if it has the same pitch. */
-
- if (context_info & AFTER_VIRGA)
- {
- /*
- * After a virga, make a an additional small space such that
- * the appendix on the right side of the head does not touch
- * the following head.
- */
- ligature_width += extra_space;
- }
- else if ((context_info & FLEXA_LEFT) && !(context_info & PES_UPPER))
- {
- /*
- * Before a flexa (but not within a torculus), make a an
- * additional small space such that the appendix on the left
- * side of the flexa does not touch the this head.
- */
- ligature_width += extra_space;
- }
- else if (delta_pitch == 0)
- {
- /*
- * If there are two adjacent noteheads with the same pitch,
- * add additional small space between them, such that they
- * do not touch each other.
- */
- ligature_width += extra_space;
- }
+ if (need_extra_space (prev_prefix_set, prefix_set,
+ context_info, delta_pitch))
+ ligature_width += extra_space;
/*
* Horizontally line-up this head to form a ligature.
ligature_width += head_width;
prev_primitive = primitive;
+ prev_prefix_set = prefix_set;
}
/*
return ligature_width;
}
+/*
+ * Depending on the typographical features of a particular ligature
+ * style, some prefixes may be ignored. In particular, if a curved
+ * flexa shape is produced, any prefixes to either of the two
+ * contributing heads that would select a head other than punctum, is
+ * by definition ignored.
+ *
+ * This function prints a warning, if the given primitive is prefixed
+ * such that a head other than punctum would be chosen, if this
+ * primitive were engraved as a stand-alone head.
+ */
void
-Vaticana_ligature_engraver::transform_heads (Spanner *ligature,
- Array<Grob_info> primitives)
+check_for_prefix_loss (Item *primitive)
{
- Real flexa_width;
- SCM flexa_width_scm = ligature->get_grob_property ("flexa-width");
- if (flexa_width_scm != SCM_EOL)
- {
- flexa_width = gh_scm2double (flexa_width_scm);
- }
- else
+ int prefix_set =
+ gh_scm2int (primitive->get_property ("prefix-set"));
+ if (prefix_set & ~PES_OR_FLEXA)
{
- ligature->programming_error ("Vaticana_ligature_engraver:"
- "flexa-width undefined; "
- "assuming 2.0 staff space");
- flexa_width =
- 2.0 * Staff_symbol_referencer::staff_space (ligature);
+ String prefs = Gregorian_ligature::prefixes_to_str (primitive);
+ primitive->warning (_f ("ignored prefix (es) `%s' of this head according "
+ "to restrictions of the selected ligature style",
+ prefs.to_str0 ()));
}
+}
- Real thickness;
- SCM thickness_scm = ligature->get_grob_property ("thickness");
- if (thickness_scm != SCM_EOL)
- {
- thickness = gh_scm2double (thickness_scm);
- }
- else
- {
- ligature->programming_error ("Vaticana_ligature_engraver:"
- "thickness undefined; assuming 1.0");
- thickness = 1.0;
- }
+void
+Vaticana_ligature_engraver::transform_heads (Spanner *ligature,
+ Array<Grob_info> primitives)
+{
+ Real flexa_width= robust_scm2double ( ligature->get_property ("flexa-width"), 2);
+
+ Real thickness= robust_scm2double ( ligature->get_property ("thickness"), 1);
Item *prev_primitive = 0;
int prev_prefix_set = 0;
int prev_context_info = 0;
int prev_delta_pitch = 0;
String prev_glyph_name = "";
- for (int i = 0; i < primitives.size(); i++) {
+ for (int i = 0; i < primitives.size (); i++) {
Item *primitive = dynamic_cast<Item*> (primitives[i].grob_);
int delta_pitch;
- SCM delta_pitch_scm = primitive->get_grob_property ("delta-pitch");
+ SCM delta_pitch_scm = primitive->get_property ("delta-pitch");
if (delta_pitch_scm != SCM_EOL)
{
delta_pitch = gh_scm2int (delta_pitch_scm);
/* retrieve & complete prefix_set and context_info */
int prefix_set =
- gh_scm2int (primitive->get_grob_property ("prefix-set"));
+ gh_scm2int (primitive->get_property ("prefix-set"));
int context_info =
- gh_scm2int (primitive->get_grob_property ("context-info"));
+ gh_scm2int (primitive->get_property ("context-info"));
if (is_stacked_head (prefix_set, context_info))
{
context_info |= STACKED_HEAD;
- primitive->set_grob_property ("context-info",
+ primitive->set_property ("context-info",
gh_int2scm (context_info));
}
if (prefix_set & VIRGA)
{
glyph_name = "vaticana_punctum";
- primitive->set_grob_property ("add-stem", gh_bool2scm(true));
+ primitive->set_property ("add-stem", gh_bool2scm (true));
}
else if (prefix_set & QUILISMA)
glyph_name = "vaticana_quilisma";
* Therefore, the following line of code should be
* placed somewhere else.
*/
- prev_primitive->set_grob_property ("add-cauda",
- gh_bool2scm(false));
+ prev_primitive->set_property ("add-cauda",
+ gh_bool2scm (false));
}
glyph_name = "vaticana_reverse_plica";
}
*/
if ((context_info & FLEXA_LEFT) && !(context_info & PES_UPPER))
if (!String::compare (glyph_name, "vaticana_punctum"))
- primitive->set_grob_property ("add-cauda", gh_bool2scm(true));
+ primitive->set_property ("add-cauda", gh_bool2scm (true));
/*
* Execptional rule for porrectus:
*/
if ((context_info & FLEXA_RIGHT) && (context_info & PES_LOWER))
{
- glyph_name = "";
+ check_for_prefix_loss (prev_primitive);
prev_glyph_name = "flexa";
- prev_primitive->set_grob_property ("flexa-height",
+ prev_primitive->set_property ("flexa-height",
gh_int2scm (prev_delta_pitch));
- prev_primitive->set_grob_property ("flexa-width",
+ prev_primitive->set_property ("flexa-width",
gh_double2scm (flexa_width));
bool add_cauda = !(prev_prefix_set && PES_OR_FLEXA);
- prev_primitive->set_grob_property ("add-cauda",
+ prev_primitive->set_property ("add-cauda",
gh_bool2scm (add_cauda));
+ check_for_prefix_loss (primitive);
+ glyph_name = "";
+ primitive->set_property ("flexa-width",
+ gh_double2scm (flexa_width));
}
/*
}
if (prev_primitive)
- prev_primitive->set_grob_property ("glyph-name",
+ prev_primitive->set_property ("glyph-name",
scm_makfrom0str (prev_glyph_name.to_str0 ()));
/*
* ligature grob's value for thickness to each ligature head (even
* if not all of them need to know).
*/
- primitive->set_grob_property ("thickness", gh_double2scm (thickness));
+ primitive->set_property ("thickness", gh_double2scm (thickness));
prev_primitive = primitive;
prev_prefix_set = prefix_set;
prev_glyph_name = glyph_name;
}
- prev_primitive->set_grob_property ("glyph-name",
+ prev_primitive->set_property ("glyph-name",
scm_makfrom0str (prev_glyph_name.to_str0 ()));
#if 0
align_heads (primitives, flexa_width, thickness);
#if 0 // experimental code to collapse spacing after ligature
- /* TODO: set to max(old/new spacing-increment), since other
+ /* TODO: set to max (old/new spacing-increment), since other
voices/staves also may want to set this property. */
Item *first_primitive = dynamic_cast<Item*> (primitives[0].grob_);
- Paper_column *paper_column = first_primitive->get_column();
+ Paper_column *paper_column = first_primitive->get_column ();
paper_column->warning (_f ("Vaticana_ligature_engraver: "
"setting `spacing-increment = %f': ptr=%ul",
ligature_width, paper_column));
paper_column->
- set_grob_property("forced-spacing", gh_double2scm (ligature_width));
+ set_property ("forced-spacing", gh_double2scm (ligature_width));
#endif
}
ENTER_DESCRIPTION (Vaticana_ligature_engraver,
/* descr */ "Handles ligatures by glueing special ligature heads together.",
/* creats*/ "VaticanaLigature",
-/* accepts */ "ligature-event abort-event",
+/* accepts */ "ligature-event",
/* acks */ "note-head-interface rest-interface",
/* reads */ "",
/* write */ "");
projects / lilypond.git / blobdiff