source file of the GNU LilyPond music typesetter
- (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
+
#include "font-metric.hh"
+#include "libc-extension.hh"
+#include "lookup.hh"
#include "stencil.hh"
/*
TODO: naming add/combine.
- */
-/*
- UGH. Junk all mutators.
- */
-LY_DEFINE (ly_stencil_set_extent_x, "ly:stencil-set-extent!",
- 3, 0, 0, (SCM stil, SCM axis, SCM np),
- "Set the extent of @var{stil} "
- "(@var{extent} must be a pair of numbers) "
- "in @var{axis} direction (0 or 1 for x- and y-axis respectively).")
-{
- Stencil *s = unsmob_stencil (stil);
- SCM_ASSERT_TYPE (s, stil, SCM_ARG1, __FUNCTION__, "stencil");
- SCM_ASSERT_TYPE (is_axis (axis), axis, SCM_ARG2, __FUNCTION__, "axis");
- SCM_ASSERT_TYPE (is_number_pair (np), np, SCM_ARG3, __FUNCTION__,
- "number pair");
-
- Interval iv = ly_scm2interval (np);
- s->dim_[Axis (ly_scm2int (axis))] = iv;
-
- return SCM_UNDEFINED;
-}
+*/
LY_DEFINE (ly_translate_stencil_axis, "ly:stencil-translate-axis",
3, 0, 0, (SCM stil, SCM amount, SCM axis),
{
Stencil *s = unsmob_stencil (stil);
SCM_ASSERT_TYPE (s, stil, SCM_ARG1, __FUNCTION__, "stencil");
- SCM_ASSERT_TYPE (ly_c_number_p (amount), amount, SCM_ARG2, __FUNCTION__, "number pair");
+ SCM_ASSERT_TYPE (scm_is_number (amount), amount, SCM_ARG2, __FUNCTION__, "number");
+
+ Real real_amount = scm_to_double (amount);
+
+#if 0
+ SCM_ASSERT_TYPE (!isinf (real_amount) && !isnan (real_amount),
+ amount, SCM_ARG2, __FUNCTION__, "finite number");
+#endif
+
SCM_ASSERT_TYPE (is_axis (axis), axis, SCM_ARG3, __FUNCTION__, "axis");
SCM new_s = s->smobbed_copy ();
Stencil *q = unsmob_stencil (new_s);
- q->translate_axis (ly_scm2double (amount), Axis (ly_scm2int (axis)));
+ q->translate_axis (real_amount, Axis (scm_to_int (axis)));
return new_s;
-
}
LY_DEFINE (ly_translate_stencil, "ly:stencil-translate",
Offset o = ly_scm2offset (offset);
SCM new_s = s->smobbed_copy ();
- Stencil *q =unsmob_stencil (new_s);
+ Stencil *q = unsmob_stencil (new_s);
q->translate (o);
return new_s;
}
return s->expr ();
}
-LY_DEFINE (ly_stencil_get_extent, "ly:stencil-extent",
+LY_DEFINE (ly_stencil_extent, "ly:stencil-extent",
2, 0, 0, (SCM stil, SCM axis),
"Return a pair of numbers signifying the extent of @var{stil} in "
"@var{axis} direction (0 or 1 for x and y axis respectively).")
SCM_ASSERT_TYPE (s, stil, SCM_ARG1, __FUNCTION__, "stencil");
SCM_ASSERT_TYPE (is_axis (axis), axis, SCM_ARG2, __FUNCTION__, "axis");
- return ly_interval2scm (s->extent (Axis (ly_scm2int (axis))));
+ return ly_interval2scm (s->extent (Axis (scm_to_int (axis))));
+}
+
+LY_DEFINE (ly_stencil_empty_p, "ly:stencil-empty?",
+ 1, 0, 0, (SCM stil),
+ "Return whether @var{stil} is empty ")
+{
+ Stencil *s = unsmob_stencil (stil);
+ SCM_ASSERT_TYPE (s, stil, SCM_ARG1, __FUNCTION__, "stencil");
+ return scm_from_bool (s->is_empty ());
+}
+
+LY_DEFINE (ly_stencil_origin, "ly:stencil-origin",
+ 2, 0, 0, (SCM stil, SCM axis),
+ "Return a pair of numbers signifying the origin @var{stil} in "
+ "@var{axis} direction (0 or 1 for x and y axis respectively).")
+{
+ Stencil *s = unsmob_stencil (stil);
+ SCM_ASSERT_TYPE (s, stil, SCM_ARG1, __FUNCTION__, "stencil");
+ SCM_ASSERT_TYPE (is_axis (axis), axis, SCM_ARG2, __FUNCTION__, "axis");
+
+ return scm_from_double (s->origin ()[Axis (scm_to_int (axis))]);
}
LY_DEFINE (ly_stencil_moved_to_edge, "ly:stencil-moved-to-edge",
{
/*
C&P from combine-at-edge.
- */
+ */
Stencil *s1 = unsmob_stencil (first);
Stencil *s2 = unsmob_stencil (second);
Stencil first_stencil;
Real p = 0.0;
if (padding != SCM_UNDEFINED)
{
- SCM_ASSERT_TYPE (ly_c_number_p (padding), padding, SCM_ARG5, __FUNCTION__, "number");
- p = ly_scm2double (padding);
+ SCM_ASSERT_TYPE (scm_is_number (padding), padding, SCM_ARG5, __FUNCTION__, "number");
+ p = scm_to_double (padding);
}
Real m = 0.0;
if (minimum != SCM_UNDEFINED)
{
- SCM_ASSERT_TYPE (ly_c_number_p (minimum), minimum, SCM_ARG6, __FUNCTION__, "number");
- m = ly_scm2double (minimum);
+ SCM_ASSERT_TYPE (scm_is_number (minimum), minimum, SCM_ARG6, __FUNCTION__, "number");
+ m = scm_to_double (minimum);
}
if (s1)
first_stencil = *s1;
if (s2)
- return first_stencil.moved_to_edge (Axis (ly_scm2int (axis)),
- Direction (ly_scm2int (direction)),
+ return first_stencil.moved_to_edge (Axis (scm_to_int (axis)),
+ Direction (scm_to_int (direction)),
*s2, p, m).smobbed_copy ();
else
- return Stencil().smobbed_copy ();
+ return Stencil ().smobbed_copy ();
}
-
-
LY_DEFINE (ly_stencil_combine_at_edge, "ly:stencil-combine-at-edge",
- 4, 2, 0, (SCM first, SCM axis, SCM direction,
- SCM second,
- SCM padding,
- SCM minimum),
+ 4, 2, 0, (SCM first, SCM axis, SCM direction,
+ SCM second,
+ SCM padding,
+ SCM minimum),
"Construct a stencil by putting @var{second} next to @var{first}. "
"@var{axis} can be 0 (x-axis) or 1 (y-axis), "
"@var{direction} can be -1 (left or down) or 1 (right or up). "
Stencil *s2 = unsmob_stencil (second);
Stencil result;
- SCM_ASSERT_TYPE (s1 || first == SCM_BOOL_F || first == SCM_EOL,
+ SCM_ASSERT_TYPE (s1 || first == SCM_BOOL_F || first == SCM_EOL,
first, SCM_ARG1, __FUNCTION__, "Stencil, #f or ()");
- SCM_ASSERT_TYPE (s2 || second == SCM_BOOL_F || second == SCM_EOL,
+ SCM_ASSERT_TYPE (s2 || second == SCM_BOOL_F || second == SCM_EOL,
second, SCM_ARG4, __FUNCTION__, "Stencil, #f or ()");
SCM_ASSERT_TYPE (is_axis (axis), axis, SCM_ARG2, __FUNCTION__, "axis");
SCM_ASSERT_TYPE (is_direction (direction), direction, SCM_ARG3, __FUNCTION__, "dir");
Real p = 0.0;
if (padding != SCM_UNDEFINED)
{
- SCM_ASSERT_TYPE (ly_c_number_p (padding), padding, SCM_ARG5, __FUNCTION__, "number");
- p = ly_scm2double (padding);
+ SCM_ASSERT_TYPE (scm_is_number (padding), padding, SCM_ARG5, __FUNCTION__, "number");
+ p = scm_to_double (padding);
}
Real m = 0.0;
if (minimum != SCM_UNDEFINED)
{
- SCM_ASSERT_TYPE (ly_c_number_p (minimum), minimum, SCM_ARG6, __FUNCTION__, "number");
- m = ly_scm2double (minimum);
+ SCM_ASSERT_TYPE (scm_is_number (minimum), minimum, SCM_ARG6, __FUNCTION__, "number");
+ m = scm_to_double (minimum);
}
if (s1)
result = *s1;
-
+
if (s2)
- result.add_at_edge (Axis (ly_scm2int (axis)),
- Direction (ly_scm2int (direction)), *s2, p, m);
+ result.add_at_edge (Axis (scm_to_int (axis)),
+ Direction (scm_to_int (direction)), *s2, p, m);
return result.smobbed_copy ();
}
-LY_DEFINE (ly_stencil_add , "ly:stencil-add",
+LY_DEFINE (ly_stencil_add, "ly:stencil-add",
0, 0, 1, (SCM args),
"Combine stencils. Takes any number of arguments.")
{
#define FUNC_NAME __FUNCTION__
SCM_VALIDATE_REST_ARGUMENT (args);
- Stencil result;
+ SCM expr = SCM_EOL;
+ SCM *tail = &expr;
+ Box extent;
+ extent.set_empty ();
while (!SCM_NULLP (args))
{
- Stencil *s = unsmob_stencil (ly_car (args));
+ Stencil *s = unsmob_stencil (scm_car (args));
if (!s)
- SCM_ASSERT_TYPE (s, ly_car (args), SCM_ARGn, __FUNCTION__, "Stencil");
+ SCM_ASSERT_TYPE (s, scm_car (args), SCM_ARGn, __FUNCTION__, "Stencil");
- result.add_stencil (*s);
- args = ly_cdr (args);
+ extent.unite (s->extent_box ());
+ *tail = scm_cons (s->expr (), SCM_EOL);
+ tail = SCM_CDRLOC (*tail);
+ args = scm_cdr (args);
}
- return result.smobbed_copy ();
+ expr = scm_cons (ly_symbol2scm ("combine-stencil"), expr);
+ return Stencil (extent, expr).smobbed_copy ();
}
LY_DEFINE (ly_make_stencil, "ly:make-stencil",
- 3, 0, 0, (SCM expr, SCM xext, SCM yext),
+ 3, 0, 0, (SCM expr, SCM xext, SCM yext),
" \n"
"Stencils are a device independent output expressions."
"They carry two pieces of information: \n\n"
"1: a specification of how to print this object. "
"This specification is processed by the output backends, "
- " for example @file{scm/output-tex.scm}.\n\n"
+ " for example @file{scm/output-ps.scm}.\n\n"
"2: the vertical and horizontal extents of the object.\n\n")
{
+ SCM_ASSERT_TYPE (!scm_is_pair (expr)
+ || is_stencil_head (scm_car (expr)),
+ expr, SCM_ARG1, __FUNCTION__, "registered stencil expression");
+
SCM_ASSERT_TYPE (is_number_pair (xext), xext, SCM_ARG2, __FUNCTION__, "number pair");
SCM_ASSERT_TYPE (is_number_pair (yext), yext, SCM_ARG3, __FUNCTION__, "number pair");
return s.smobbed_copy ();
}
-
-LY_DEFINE (ly_stencil_align_to_x, "ly:stencil-align-to!",
+LY_DEFINE (ly_stencil_aligned_to, "ly:stencil-aligned-to",
3, 0, 0, (SCM stil, SCM axis, SCM dir),
"Align @var{stil} using its own extents. "
"@var{dir} is a number -1, 1 are left and right respectively. "
- "Other values are interpolated (so 0 means the center. ")
+ "Other values are interpolated (so 0 means the center).")
{
SCM_ASSERT_TYPE (unsmob_stencil (stil), stil, SCM_ARG1, __FUNCTION__, "stencil");
SCM_ASSERT_TYPE (is_axis (axis), axis, SCM_ARG2, __FUNCTION__, "axis");
- SCM_ASSERT_TYPE (ly_c_number_p (dir), dir, SCM_ARG3, __FUNCTION__, "number");
+ SCM_ASSERT_TYPE (scm_is_number (dir), dir, SCM_ARG3, __FUNCTION__, "number");
+
+ Stencil target = *unsmob_stencil (stil);
+
+ target.align_to ((Axis)scm_to_int (axis),
+ scm_to_double (dir));
+ return target.smobbed_copy ();
+}
+
+LY_DEFINE (ly_stencil_fonts, "ly:stencil-fonts",
+ 1, 0, 0, (SCM s),
+ " Analyse @var{s}, and return a list of fonts used in @var{s}.")
+{
+ Stencil *stil = unsmob_stencil (s);
+ SCM_ASSERT_TYPE (stil, s, SCM_ARG1, __FUNCTION__, "Stencil");
+ return find_expression_fonts (stil->expr ());
+}
+
+LY_DEFINE (ly_stencil_in_color, "ly:stencil-in-color",
+ 4, 0, 0, (SCM stc, SCM r, SCM g, SCM b),
+ "Put @var{stc} in a different color.")
+{
+ Stencil *stil = unsmob_stencil (stc);
+ SCM_ASSERT_TYPE (stil, stc, SCM_ARG1, __FUNCTION__, "Stencil");
+ return Stencil (stil->extent_box (),
+ scm_list_3 (ly_symbol2scm ("color"),
+ scm_list_3 (r, g, b),
+ stil->expr ())).smobbed_copy ();
+}
+
+struct Stencil_interpret_arguments
+{
+ SCM func;
+ SCM arg1;
+};
+
+void stencil_interpret_in_scm (void *p, SCM expr)
+{
+ Stencil_interpret_arguments *ap = (Stencil_interpret_arguments *) p;
+ scm_call_2 (ap->func, ap->arg1, expr);
+}
+
+LY_DEFINE (ly_interpret_stencil_expression, "ly:interpret-stencil-expression",
+ 4, 0, 0, (SCM expr, SCM func, SCM arg1, SCM offset),
+ "Parse EXPR, feed bits to FUNC with first arg ARG1")
+{
+ SCM_ASSERT_TYPE (ly_is_procedure (func), func, SCM_ARG1, __FUNCTION__,
+ "procedure");
+
+ Stencil_interpret_arguments a;
+ a.func = func;
+ a.arg1 = arg1;
+ Offset o = ly_scm2offset (offset);
+
+ interpret_stencil_expression (expr, stencil_interpret_in_scm, (void *) & a, o);
- unsmob_stencil (stil)->align_to ((Axis)ly_scm2int (axis),
- ly_scm2double (dir));
- return stil;
+ return SCM_UNSPECIFIED;
+}
+
+LY_DEFINE (ly_bracket, "ly:bracket",
+ 4, 0, 0,
+ (SCM a, SCM iv, SCM t, SCM p),
+ "Make a bracket in direction @var{a}. The extent of the bracket is "
+ "given by @var{iv}. The wings protude by an amount of @var{p}, which "
+ "may be negative. The thickness is given by @var{t}.")
+{
+ SCM_ASSERT_TYPE (is_axis (a), a, SCM_ARG1, __FUNCTION__, "axis");
+ SCM_ASSERT_TYPE (is_number_pair (iv), iv, SCM_ARG2, __FUNCTION__, "number pair");
+ SCM_ASSERT_TYPE (scm_is_number (t), a, SCM_ARG3, __FUNCTION__, "number");
+ SCM_ASSERT_TYPE (scm_is_number (p), a, SCM_ARG4, __FUNCTION__, "number");
+
+ return Lookup::bracket ((Axis)scm_to_int (a), ly_scm2interval (iv),
+ scm_to_double (t),
+ scm_to_double (p),
+ 0.95 * scm_to_double (t)).smobbed_copy ();
+}
+
+LY_DEFINE (ly_rotate_stencil, "ly:stencil-rotate",
+ 4, 0, 0, (SCM stil, SCM angle, SCM x, SCM y),
+ "Return a @var{stil} rotated @var{angle} degrees around point (@var{x}, @var{y}).")
+{
+ Stencil *s = unsmob_stencil (stil);
+ SCM_ASSERT_TYPE (s, stil, SCM_ARG1, __FUNCTION__, "stencil");
+ SCM_ASSERT_TYPE (scm_is_number (angle), angle, SCM_ARG2, __FUNCTION__, "number");
+ SCM_ASSERT_TYPE (scm_is_number (x), x, SCM_ARG3, __FUNCTION__, "number");
+ SCM_ASSERT_TYPE (scm_is_number (y), y, SCM_ARG4, __FUNCTION__, "number");
+ Real a = scm_to_double (angle);
+ Real x_off = scm_to_double (x);
+ Real y_off = scm_to_double (y);
+
+ SCM new_s = s->smobbed_copy ();
+ Stencil *q = unsmob_stencil (new_s);
+ q->rotate (a, Offset (x_off, y_off));
+ return new_s;
+}
+
+LY_DEFINE (ly_filled_box, "ly:round-filled-box",
+ 3, 0, 0,
+ (SCM xext, SCM yext, SCM blot),
+ "Make a @code{Stencil} "
+ "that prints a black box of dimensions @var{xext}, "
+ "@var{yext} and roundness @var{blot}.")
+{
+ SCM_ASSERT_TYPE (is_number_pair (xext), xext, SCM_ARG1, __FUNCTION__, "number pair");
+ SCM_ASSERT_TYPE (is_number_pair (yext), yext, SCM_ARG2, __FUNCTION__, "number pair");
+ SCM_ASSERT_TYPE (scm_is_number (blot), blot, SCM_ARG3, __FUNCTION__, "number");
+
+ return Lookup::round_filled_box (Box (ly_scm2interval (xext), ly_scm2interval (yext)),
+ scm_to_double (blot)).smobbed_copy ();
+}
+
+LY_DEFINE (ly_register_stencil_expression, "ly:register-stencil-expression",
+ 1, 0, 0,
+ (SCM symbol),
+ "Add @var{symbol} as head of a stencil expression")
+{
+ SCM_ASSERT_TYPE (scm_is_symbol (symbol), symbol,
+ SCM_ARG1, __FUNCTION__, "Symbol");
+ register_stencil_head (symbol);
+ return SCM_UNSPECIFIED;
+}
+
+LY_DEFINE (ly_all_stencil_expressions, "ly:all-stencil-expressions",
+ 0, 0, 0,
+ (),
+ "Return all symbols recognized as stencil expressions.")
+{
+ return all_stencil_heads ();
}
projects / lilypond.git / blobdiff