source file of the GNU LilyPond music typesetter
- (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
-#include <math.h>
#include "font-metric.hh"
#include "libc-extension.hh"
TODO: naming add/combine.
*/
-LY_DEFINE (ly_translate_stencil_axis, "ly:stencil-translate-axis",
+LY_DEFINE (ly_stencil_translate_axis, "ly:stencil-translate-axis",
3, 0, 0, (SCM stil, SCM amount, SCM axis),
- "Return a copy of @var{stil} but translated by @var{amount} in @var{axis} direction.")
+ "Return a copy of @var{stil} but translated by @var{amount}"
+ " in @var{axis} direction.")
{
Stencil *s = unsmob_stencil (stil);
- SCM_ASSERT_TYPE (s, stil, SCM_ARG1, __FUNCTION__, "stencil");
- SCM_ASSERT_TYPE (scm_is_number (amount), amount, SCM_ARG2, __FUNCTION__, "number");
+ LY_ASSERT_SMOB (Stencil, stil, 1);
+ LY_ASSERT_TYPE (scm_is_number, amount, 2);
+ LY_ASSERT_TYPE (is_axis, axis, 3);
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 (real_amount, Axis (scm_to_int (axis)));
return new_s;
}
-LY_DEFINE (ly_translate_stencil, "ly:stencil-translate",
+LY_DEFINE (ly_stencil_translate, "ly:stencil-translate",
2, 0, 0, (SCM stil, SCM offset),
- "Return a @var{stil}, "
- "but translated by @var{offset} (a pair of numbers).")
+ "Return a @var{stil}, but translated by @var{offset}"
+ " (a pair of numbers).")
{
Stencil *s = unsmob_stencil (stil);
- SCM_ASSERT_TYPE (s, stil, SCM_ARG1, __FUNCTION__, "stencil");
- SCM_ASSERT_TYPE (is_number_pair (offset), offset, SCM_ARG2, __FUNCTION__, "number pair");
+ LY_ASSERT_SMOB (Stencil, stil, 1);
+ LY_ASSERT_TYPE (is_number_pair, offset, 2);
Offset o = ly_scm2offset (offset);
SCM new_s = s->smobbed_copy ();
"Return the expression of @var{stil}.")
{
Stencil *s = unsmob_stencil (stil);
- SCM_ASSERT_TYPE (s, stil, SCM_ARG1, __FUNCTION__, "stencil");
+ LY_ASSERT_SMOB (Stencil, stil, 1);
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).")
+ "Return a pair of numbers signifying the extent of @var{stil} in"
+ " @var{axis} direction (@code{0} or @code{1} for x and"
+ " y@tie{}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");
+ LY_ASSERT_SMOB (Stencil, stil, 1);
+ LY_ASSERT_TYPE (is_axis, axis, 2);
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 ")
+ "Return whether @var{stil} is empty.")
{
Stencil *s = unsmob_stencil (stil);
- SCM_ASSERT_TYPE (s, stil, SCM_ARG1, __FUNCTION__, "stencil");
+ LY_ASSERT_SMOB (Stencil, stil, 1);
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",
- 4, 2, 0, (SCM first, SCM axis, SCM direction, SCM second,
- SCM padding, SCM minimum),
- "Similar to @code{ly:stencil-combine-edge}, but returns "
- "@var{second} positioned to be next to @var{first}. ")
-{
- /*
- C&P from combine-at-edge.
- */
- Stencil *s1 = unsmob_stencil (first);
- Stencil *s2 = unsmob_stencil (second);
- Stencil first_stencil;
-
- SCM_ASSERT_TYPE (is_axis (axis), axis, SCM_ARG3, __FUNCTION__, "axis");
- SCM_ASSERT_TYPE (is_direction (direction), direction, SCM_ARG4, __FUNCTION__, "dir");
-
- Real p = 0.0;
- if (padding != SCM_UNDEFINED)
- {
- 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 (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 (scm_to_int (axis)),
- Direction (scm_to_int (direction)),
- *s2, p, m).smobbed_copy ();
- else
- 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),
- "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). "
- "The stencils are juxtaposed with @var{padding} as extra space. "
- "If this puts the reference points closer than @var{minimum}, "
- "they are moved by the latter amount."
- "@var{first} and @var{second} may also be '() or #f.")
+ "Construct a stencil by putting @var{second} next to @var{first}."
+ " @var{axis} can be 0 (x-axis) or@tie{}1 (y-axis)."
+ " @var{direction} can be -1 (left or down) or@tie{}1 (right or"
+ " up). The stencils are juxtaposed with @var{padding} as extra"
+ " space. If this puts the reference points closer than"
+ " @var{minimum}, they are moved by the latter amount."
+ " @var{first} and @var{second} may also be @code{'()} or"
+ " @code{#f}.")
{
Stencil *s1 = unsmob_stencil (first);
Stencil *s2 = unsmob_stencil (second);
first, SCM_ARG1, __FUNCTION__, "Stencil, #f or ()");
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");
+ LY_ASSERT_TYPE (is_axis, axis, 2);
+ LY_ASSERT_TYPE (is_direction, direction, 3);
Real p = 0.0;
if (padding != SCM_UNDEFINED)
{
- SCM_ASSERT_TYPE (scm_is_number (padding), padding, SCM_ARG5, __FUNCTION__, "number");
+ LY_ASSERT_TYPE (scm_is_number, padding, 5);
p = scm_to_double (padding);
}
Real m = 0.0;
if (minimum != SCM_UNDEFINED)
{
- SCM_ASSERT_TYPE (scm_is_number (minimum), minimum, SCM_ARG6, __FUNCTION__, "number");
+ LY_ASSERT_TYPE (scm_is_number, minimum, 6);
m = scm_to_double (minimum);
}
if (s2)
result.add_at_edge (Axis (scm_to_int (axis)),
- Direction (scm_to_int (direction)), *s2, p, m);
+ Direction (scm_to_int (direction)), *s2, p);
return result.smobbed_copy ();
}
LY_DEFINE (ly_stencil_add, "ly:stencil-add",
0, 0, 1, (SCM args),
- "Combine stencils. Takes any number of arguments.")
+ "Combine stencils. Takes any number of arguments.")
{
#define FUNC_NAME __FUNCTION__
SCM_VALIDATE_REST_ARGUMENT (args);
SCM expr = SCM_EOL;
- SCM *tail = &expr;
+ SCM *tail = &expr;
Box extent;
extent.set_empty ();
-
+
while (!SCM_NULLP (args))
{
Stencil *s = unsmob_stencil (scm_car (args));
if (!s)
SCM_ASSERT_TYPE (s, scm_car (args), SCM_ARGn, __FUNCTION__, "Stencil");
-
extent.unite (s->extent_box ());
*tail = scm_cons (s->expr (), SCM_EOL);
tail = SCM_CDRLOC (*tail);
}
LY_DEFINE (ly_make_stencil, "ly:make-stencil",
- 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"
- "2: the vertical and horizontal extents of the object.\n\n")
+ 1, 2, 0, (SCM expr, SCM xext, SCM yext),
+ "Stencils are device independent output expressions."
+ " They carry two pieces of information:\n"
+ "\n"
+ "@enumerate\n"
+ "@item\n"
+ "A specification of how to print this object."
+ " This specification is processed by the output backends,"
+ " for example @file{scm/output-ps.scm}.\n"
+ "\n"
+ "@item\n"
+ "The vertical and horizontal extents of the object, given as"
+ " pairs. If an extent is unspecified (or if you use"
+ " @code{(1000 . -1000)} as its value), it is taken to be empty.\n"
+ "@end enumerate\n")
{
- 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");
+ SCM_ASSERT_TYPE (!scm_is_pair (expr)
+ || is_stencil_head (scm_car (expr)),
+ expr, SCM_ARG1, __FUNCTION__, "registered stencil expression");
+
+
+ Interval x;
+ if (xext != SCM_UNDEFINED)
+ {
+ LY_ASSERT_TYPE (is_number_pair, xext, 2);
+ x = ly_scm2interval (xext);
+ }
- Box b (ly_scm2interval (xext), ly_scm2interval (yext));
+ Interval y;
+ if (yext != SCM_UNDEFINED)
+ {
+ LY_ASSERT_TYPE (is_number_pair, yext, 3);
+ y = ly_scm2interval (yext);
+ }
+
+ Box b (x, y);
Stencil s (b, expr);
return s.smobbed_copy ();
}
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).")
+ "Align @var{stil} using its own extents. @var{dir} is a number."
+ " @code{-1} and @code{1} are left and right, respectively."
+ " Other values are interpolated (so @code{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 (scm_is_number (dir), dir, SCM_ARG3, __FUNCTION__, "number");
+ LY_ASSERT_SMOB (Stencil, stil, 1);
+ LY_ASSERT_TYPE (is_axis, axis, 2);
+ LY_ASSERT_TYPE (scm_is_number, dir, 3);
Stencil target = *unsmob_stencil (stil);
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}.")
+ "Analyze @var{s}, and return a list of fonts used"
+ " in@tie{}@var{s}.")
{
+ LY_ASSERT_SMOB (Stencil, s, 1);
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.")
+{
+ LY_ASSERT_SMOB (Stencil, stc, 1);
+ Stencil *stil = unsmob_stencil (stc);
+ 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;
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")
+ "Parse @var{expr}, feed bits to @var{func} with first arg"
+ " @var{arg1} having offset @var{offset}.")
{
- SCM_ASSERT_TYPE (ly_c_procedure_p (func), func, SCM_ARG1, __FUNCTION__,
- "procedure");
+ LY_ASSERT_TYPE (ly_is_procedure, func, 2);
Stencil_interpret_arguments a;
a.func = func;
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}.")
+ "Make a bracket in direction@tie{}@var{a}. The extent of the"
+ " bracket is given by @var{iv}. The wings protrude by an amount"
+ " of@tie{}@var{p}, which may be negative. The thickness is given"
+ " by@tie{}@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");
+ LY_ASSERT_TYPE (is_axis, a, 1);
+ LY_ASSERT_TYPE (is_number_pair, iv, 2);
+ LY_ASSERT_TYPE (scm_is_number, t, 3);
+ LY_ASSERT_TYPE (scm_is_number, p, 4);
return Lookup::bracket ((Axis)scm_to_int (a), ly_scm2interval (iv),
scm_to_double (t),
0.95 * scm_to_double (t)).smobbed_copy ();
}
-LY_DEFINE (ly_filled_box, "ly:round-filled-box",
+LY_DEFINE (ly_stencil_rotate, "ly:stencil-rotate",
+ 4, 0, 0, (SCM stil, SCM angle, SCM x, SCM y),
+ "Return a stencil @var{stil} rotated @var{angle} degrees around"
+ " the relative offset (@var{x}, @var{y}). E.g. an offset of"
+ " (-1, 1) will rotate the stencil around the left upper corner.")
+{
+ Stencil *s = unsmob_stencil (stil);
+ LY_ASSERT_SMOB (Stencil, stil, 1);
+ LY_ASSERT_TYPE (scm_is_number, angle, 2);
+ LY_ASSERT_TYPE (scm_is_number, x, 3);
+ LY_ASSERT_TYPE (scm_is_number, y, 4);
+ 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_degrees (a, Offset (x_off, y_off));
+ return new_s;
+}
+
+LY_DEFINE (ly_stencil_rotate_absolute, "ly:stencil-rotate-absolute",
+ 4, 0, 0, (SCM stil, SCM angle, SCM x, SCM y),
+ "Return a stencil @var{stil} rotated @var{angle} degrees around"
+ " point (@var{x}, @var{y}), given in absolute coordinates.")
+{
+ Stencil *s = unsmob_stencil (stil);
+ LY_ASSERT_SMOB (Stencil, stil, 1);
+ LY_ASSERT_TYPE (scm_is_number, angle, 2);
+ LY_ASSERT_TYPE (scm_is_number, x, 3);
+ LY_ASSERT_TYPE (scm_is_number, y, 4);
+ 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_degrees_absolute (a, Offset (x_off, y_off));
+ return new_s;
+}
+
+LY_DEFINE (ly_round_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}.")
+ "Make a @code{Stencil} object 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");
+ LY_ASSERT_TYPE (is_number_pair, xext, 1);
+ LY_ASSERT_TYPE (is_number_pair, yext, 2);
+ LY_ASSERT_TYPE (scm_is_number, blot, 3);
return Lookup::round_filled_box (Box (ly_scm2interval (xext), ly_scm2interval (yext)),
scm_to_double (blot)).smobbed_copy ();
}
+LY_DEFINE (ly_round_filled_polygon, "ly:round-filled-polygon",
+ 2, 0, 0,
+ (SCM points, SCM blot),
+ "Make a @code{Stencil} object that prints a black polygon with"
+ " corners at the points defined by @var{points} (list of coordinate"
+ " pairs) and roundness @var{blot}.")
+{
+ SCM_ASSERT_TYPE (scm_ilength (points) > 0, points, SCM_ARG1, __FUNCTION__, "list of coordinate pairs");
+ LY_ASSERT_TYPE (scm_is_number, blot, 2);
+ vector<Offset> pts;
+ for (SCM p = points; scm_is_pair (p); p = scm_cdr (p))
+ {
+ SCM scm_pt = scm_car (p);
+ if (scm_is_pair (scm_pt)) {
+ pts.push_back (ly_scm2offset (scm_pt));
+ } else {
+ // TODO: Print out warning
+ }
+ }
+ return Lookup::round_filled_polygon (pts, 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.")
+{
+ LY_ASSERT_TYPE (ly_is_symbol, symbol, 1);
+ 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