X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fstencil-scheme.cc;h=5764b8fd60d5443f3488fef7f8e2a04c0679f452;hb=9e781b7dc83b60a543ce218aa1a5f139f74c760f;hp=7791f02d5ac5b040759724434c877080c690500d;hpb=28f3294954eff1f263d3b2e3de1c520f4d2fbdfc;p=lilypond.git diff --git a/lily/stencil-scheme.cc b/lily/stencil-scheme.cc index 7791f02d5a..5764b8fd60 100644 --- a/lily/stencil-scheme.cc +++ b/lily/stencil-scheme.cc @@ -1,7 +1,7 @@ /* This file is part of LilyPond, the GNU music typesetter. - Copyright (C) 1997--2012 Han-Wen Nienhuys + Copyright (C) 1997--2014 Han-Wen Nienhuys LilyPond is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -40,6 +40,8 @@ LY_DEFINE (ly_stencil_translate_axis, "ly:stencil-translate-axis", Real real_amount = scm_to_double (amount); SCM new_s = s->smobbed_copy (); + scm_remember_upto_here_1 (stil); + Stencil *q = unsmob_stencil (new_s); q->translate_axis (real_amount, Axis (scm_to_int (axis))); return new_s; @@ -56,6 +58,8 @@ LY_DEFINE (ly_stencil_translate, "ly:stencil-translate", Offset o = ly_scm2offset (offset); SCM new_s = s->smobbed_copy (); + scm_remember_upto_here_1 (stil); + Stencil *q = unsmob_stencil (new_s); q->translate (o); return new_s; @@ -84,12 +88,17 @@ LY_DEFINE (ly_stencil_extent, "ly:stencil-extent", } LY_DEFINE (ly_stencil_empty_p, "ly:stencil-empty?", - 1, 0, 0, (SCM stil), - "Return whether @var{stil} is empty.") + 1, 1, 0, (SCM stil, SCM axis), + "Return whether @var{stil} is empty. If an optional" + " @var{axis} is supplied, the emptiness check is" + " restricted to that axis.") { Stencil *s = unsmob_stencil (stil); LY_ASSERT_SMOB (Stencil, stil, 1); - return scm_from_bool (s->is_empty ()); + if (SCM_UNBNDP (axis)) + return scm_from_bool (s->is_empty ()); + LY_ASSERT_TYPE (is_axis, axis, 2); + return scm_from_bool (s->is_empty (Axis (scm_to_int (axis)))); } LY_DEFINE (ly_stencil_combine_at_edge, "ly:stencil-combine-at-edge", @@ -128,6 +137,61 @@ LY_DEFINE (ly_stencil_combine_at_edge, "ly:stencil-combine-at-edge", result.add_at_edge (Axis (scm_to_int (axis)), Direction (scm_to_int (direction)), *s2, p); + scm_remember_upto_here_2 (first, second); + + return result.smobbed_copy (); +} + +LY_DEFINE (ly_stencil_stack, "ly:stencil-stack", + 4, 2, 0, (SCM first, SCM axis, SCM direction, + SCM second, + SCM padding, + SCM mindist), + "Construct a stencil by stacking @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. @var{first} and @var{second} may also be @code{'()} or" + " @code{#f}. As opposed to @code{ly:stencil-combine-at-edge}," + " metrics are suited for successively accumulating lines of" + " stencils. Also, @var{second} stencil is drawn last.\n\n" + "If @var{mindist} is specified, reference points are placed" + " apart at least by this distance. If either of the stencils" + " is spacing, @var{padding} and @var{mindist} do not apply.") +{ + Stencil *s1 = unsmob_stencil (first); + Stencil *s2 = unsmob_stencil (second); + Stencil result; + + 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, + second, SCM_ARG4, __FUNCTION__, "Stencil, #f or ()"); + LY_ASSERT_TYPE (is_axis, axis, 2); + LY_ASSERT_TYPE (is_direction, direction, 3); + + Real p = 0.0; + if (padding != SCM_UNDEFINED) + { + LY_ASSERT_TYPE (scm_is_number, padding, 5); + p = scm_to_double (padding); + } + Real d = -infinity_f; + if (!SCM_UNBNDP (mindist)) + { + LY_ASSERT_TYPE (scm_is_number, mindist, 6); + d = scm_to_double (mindist); + } + + if (s1) + result = *s1; + + if (s2) + result.stack (Axis (scm_to_int (axis)), + Direction (scm_to_int (direction)), *s2, p, d); + + scm_remember_upto_here_2 (first, second); + return result.smobbed_copy (); } @@ -139,7 +203,8 @@ LY_DEFINE (ly_stencil_add, "ly:stencil-add", SCM_VALIDATE_REST_ARGUMENT (args); SCM expr = SCM_EOL; - SCM *tail = &expr; + SCM cs = ly_symbol2scm ("combine-stencil"); + Box extent; extent.set_empty (); @@ -150,12 +215,18 @@ LY_DEFINE (ly_stencil_add, "ly:stencil-add", 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); + if (scm_is_pair (s->expr ()) && scm_is_eq (cs, s->expr ())) + { + expr = scm_reverse_x (scm_list_copy (scm_cdr (s->expr ())), + expr); + } + else + expr = scm_cons (s->expr (), expr); + args = scm_cdr (args); } - expr = scm_cons (ly_symbol2scm ("combine-stencil"), expr); + expr = scm_cons (cs, scm_reverse_x (expr, SCM_EOL)); return Stencil (extent, expr).smobbed_copy (); } @@ -173,7 +244,7 @@ LY_DEFINE (ly_make_stencil, "ly:make-stencil", "@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" + " @code{empty-interval} as its value), it is taken to be empty.\n" "@end enumerate\n") { SCM_ASSERT_TYPE (!scm_is_pair (expr) @@ -244,10 +315,10 @@ struct Stencil_interpret_arguments SCM arg1; }; -void stencil_interpret_in_scm (void *p, SCM expr) +SCM stencil_interpret_in_scm (void *p, SCM expr) { Stencil_interpret_arguments *ap = (Stencil_interpret_arguments *) p; - scm_call_2 (ap->func, ap->arg1, expr); + return scm_call_2 (ap->func, ap->arg1, expr); } LY_DEFINE (ly_interpret_stencil_expression, "ly:interpret-stencil-expression",