X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fside-position-interface.cc;h=a974a4495844c270bd6a41c0437ff1216ff1f781;hb=0936aae8ea2abc218410af27a3f832a850cdda05;hp=103593b686c95be0bf6a7e80b69e5460209bfcea;hpb=1753b1a73742a5b0893037116bb6f2febba277f3;p=lilypond.git diff --git a/lily/side-position-interface.cc b/lily/side-position-interface.cc index 103593b686..a974a44958 100644 --- a/lily/side-position-interface.cc +++ b/lily/side-position-interface.cc @@ -3,7 +3,7 @@ source file of the GNU LilyPond music typesetter - (c) 1998--2003 Han-Wen Nienhuys + (c) 1998--2004 Han-Wen Nienhuys */ #include // ceil. @@ -15,6 +15,7 @@ #include "staff-symbol-referencer.hh" #include "group-interface.hh" #include "directional-element-interface.hh" +#include "staff-symbol-referencer.hh" void Side_position_interface::add_support (Grob*me, Grob*e) @@ -22,8 +23,6 @@ Side_position_interface::add_support (Grob*me, Grob*e) Pointer_group_interface::add_grob (me, ly_symbol2scm ("side-support-elements"), e); } - - Direction Side_position_interface::get_direction (Grob*me) { @@ -42,7 +41,7 @@ Side_position_interface::get_direction (Grob*me) Grob * e = unsmob_grob (other_elt); if (e) { - return (Direction) (relative_dir * Directional_element_interface::get (e)); + return (Direction) (relative_dir * get_grob_direction (e)); } return CENTER; @@ -67,21 +66,21 @@ Side_position_interface::aligned_on_support_extents (SCM element_smob, SCM axis) SCM Side_position_interface::general_side_position (Grob * me, Axis a, bool use_extents) { - - - /* - As this is only used as a callback, this is called only once. We - could wipe SIDE-SUPPORT-ELEMENTS after we retrieve it to conserve - memory; however -- we should look more into benefits of such actions? - - The benefit is small, it seems: total GC times taken don't - differ. Would this also hamper Generational GC ? - - */ + Real ss = Staff_symbol_referencer::staff_space (me); SCM support = me->get_grob_property ("side-support-elements"); Grob *common = common_refpoint_of_list (support, me->get_parent (a), a); - + Grob * st = Staff_symbol_referencer::get_staff_symbol (me); + bool include_staff = (st + && a == Y_AXIS + && gh_number_p (me->get_grob_property ("staff-padding"))); + Interval dim; + if (include_staff) + { + common = st->common_refpoint (common, Y_AXIS); + dim = st->extent (common, Y_AXIS); + } + for (SCM s = support; s != SCM_EOL; s = ly_cdr (s)) { Grob * e = unsmob_grob (ly_car (s)); @@ -95,7 +94,7 @@ Side_position_interface::general_side_position (Grob * me, Axis a, bool use_exte } } - if (dim.empty_b ()) + if (dim.is_empty ()) { dim = Interval (0,0); } @@ -103,25 +102,24 @@ Side_position_interface::general_side_position (Grob * me, Axis a, bool use_exte Direction dir = Side_position_interface::get_direction (me); Real off = me->get_parent (a)->relative_coordinate (common, a); - SCM minimum = me->get_grob_property ("minimum-space"); + Real minimum_space = ss * robust_scm2double (me->get_grob_property ("minimum-space"), -1); Real total_off = dim.linear_combination (dir) - off; - SCM padding = me->get_grob_property ("padding"); - if (gh_number_p (padding)) - { - total_off += gh_scm2double (padding) * dir; - } + total_off += dir * ss * robust_scm2double (me->get_grob_property ("padding"), 0); - if (gh_number_p (minimum) + if (minimum_space >= 0 && dir - && total_off * dir < gh_scm2double (minimum)) + && total_off * dir < minimum_space) { - total_off = gh_scm2double (minimum) * dir; + total_off = minimum_space * dir; } if (fabs (total_off) > 100 CM) programming_error ("Huh ? Improbable staff side dim."); + + + return gh_double2scm (total_off); } @@ -135,7 +133,7 @@ Side_position_interface::aligned_on_support_refpoints (SCM smob, SCM axis) Grob *me = unsmob_grob (smob); Axis a = (Axis) gh_scm2int (axis); - return general_side_position (me, a, false); + return general_side_position (me, a, false); } @@ -199,7 +197,7 @@ Side_position_interface::aligned_side (SCM element_smob, SCM axis) Interval iv = me->extent (me, a); - if (!iv.empty_b ()) + if (!iv.is_empty ()) { if (!d) { @@ -208,50 +206,32 @@ Side_position_interface::aligned_side (SCM element_smob, SCM axis) } o += - iv[-d]; } - return gh_double2scm (o); -} -/* + /* Maintain a minimum distance to the staff. This is similar to side position with padding, but it will put adjoining objects on a row if stuff sticks out of the staff a little. */ -MAKE_SCHEME_CALLBACK (Side_position_interface,out_of_staff,2); -SCM -Side_position_interface::out_of_staff (SCM element_smob, SCM axis) -{ - Grob *me = unsmob_grob (element_smob); - Axis a = (Axis) gh_scm2int (axis); - Grob * st = Staff_symbol_referencer::get_staff_symbol (me); - - if (!st) - return gh_int2scm (0); - - Real padding=0.0; - SCM spad = me->get_grob_property ("staff-padding"); - - if (gh_number_p (spad)) - padding = gh_scm2double (spad); - - Grob *common = me->common_refpoint (st, Y_AXIS); - Direction d = Side_position_interface::get_direction (me); - Interval staff_size = st->extent (common, Y_AXIS); - Interval me_ext = me->extent (common, a); - Real diff = d*staff_size[d] + padding - d*me_ext[-d]; - return gh_double2scm (diff >? 0); -} - -void -Side_position_interface::add_staff_support (Grob*me) -{ - Grob* st = Staff_symbol_referencer::get_staff_symbol (me); - if (st && get_axis (me) == Y_AXIS) + if (st && a == Y_AXIS + && gh_number_p (me->get_grob_property ("staff-padding"))) { - add_support (me,st); + Real padding= + Staff_symbol_referencer::staff_space (me) + * gh_scm2double (me->get_grob_property ("staff-padding")); + + Grob *common = me->common_refpoint (st, Y_AXIS); + + Interval staff_size = st->extent (common, Y_AXIS); + Interval me_ext = me->extent (common, a); + Real diff = d*staff_size[d] + padding - d*(o + iv[-d]); + o += (d* (diff >? 0)); } + + return gh_double2scm (o); } + void Side_position_interface::set_axis (Grob*me, Axis a) { @@ -260,7 +240,7 @@ Side_position_interface::set_axis (Grob*me, Axis a) -// ugh. doesn't cactch all variants. +// ugh. doesn't catch all variants. Axis Side_position_interface::get_axis (Grob*me) { @@ -272,38 +252,15 @@ Side_position_interface::get_axis (Grob*me) return Y_AXIS; } -void -Side_position_interface::set_direction (Grob*me, Direction d) -{ - me->set_grob_property ("direction", gh_int2scm (d)); -} - -void -Side_position_interface::set_minimum_space (Grob*me, Real m) -{ - me->set_grob_property ("minimum-space", gh_double2scm (m)); -} - -void -Side_position_interface::set_padding (Grob*me, Real p) -{ - me->set_grob_property ("padding", gh_double2scm (p)); -} - - -bool -Side_position_interface::supported_b (Grob*me) -{ - SCM s = me->get_grob_property ("side-support-elements"); - return gh_pair_p (s); -} - ADD_INTERFACE (Side_position_interface,"side-position-interface", - "Position a victim object (this one) next to other objects (the " -"support). In this case, the property @code{direction} signifies where to put the " -"victim object relative to the support (left or right, up or down?) " -, - "staff-padding side-support-elements direction-source direction side-relative-direction minimum-space padding"); + "Position a victim object (this one) next to other objects (the " + "support). In this case, the property @code{direction} signifies where to put the " + "victim object relative to the support (left or right, up or down?)\n\n " + "The routine also takes the size the staff into account if " + "@code{staff-padding} is set. If undefined, the staff symbol is ignored." + , + "staff-padding side-support-elements direction-source " + "direction side-relative-direction minimum-space padding");