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| 1 /* | 1 /* |
| 2 This file is part of LilyPond, the GNU music typesetter. | 2 This file is part of LilyPond, the GNU music typesetter. |
| 3 | 3 |
| 4 Copyright (C) 2006--2012 Joe Neeman <joeneeman@gmail.com> | 4 Copyright (C) 2006--2012 Joe Neeman <joeneeman@gmail.com> |
| 5 | 5 |
| 6 LilyPond is free software: you can redistribute it and/or modify | 6 LilyPond is free software: you can redistribute it and/or modify |
| 7 it under the terms of the GNU General Public License as published by | 7 it under the terms of the GNU General Public License as published by |
| 8 the Free Software Foundation, either version 3 of the License, or | 8 the Free Software Foundation, either version 3 of the License, or |
| 9 (at your option) any later version. | 9 (at your option) any later version. |
| 10 | 10 |
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| 497 | 497 |
| 498 Real | 498 Real |
| 499 Page_breaking::page_height (int page_num, bool last) const | 499 Page_breaking::page_height (int page_num, bool last) const |
| 500 { | 500 { |
| 501 // The caches allow us to store the page heights for any | 501 // The caches allow us to store the page heights for any |
| 502 // non-negative page numbers. We use a negative value in the | 502 // non-negative page numbers. We use a negative value in the |
| 503 // cache to signal that that position has not yet been initialized. | 503 // cache to signal that that position has not yet been initialized. |
| 504 // This means that we won't cache properly if page_num is negative or | 504 // This means that we won't cache properly if page_num is negative or |
| 505 // if calc_height returns a negative number. But that's likely to | 505 // if calc_height returns a negative number. But that's likely to |
| 506 // be rare, so it shouldn't affect performance. | 506 // be rare, so it shouldn't affect performance. |
| 507 vector<Real>& cache = last ? last_page_height_cache_ : page_height_cache_; | 507 vector<Real> &cache = last ? last_page_height_cache_ : page_height_cache_; |
| 508 if (page_num >= 0 && (int) cache.size () > page_num && cache[page_num] >= 0) | 508 if (page_num >= 0 && (int) cache.size () > page_num && cache[page_num] >= 0) |
| 509 return cache[page_num]; | 509 return cache[page_num]; |
| 510 else | 510 else |
| 511 { | 511 { |
| 512 SCM mod = scm_c_resolve_module ("scm page"); | 512 SCM mod = scm_c_resolve_module ("scm page"); |
| 513 SCM page = make_page (page_num, last); | 513 SCM page = make_page (page_num, last); |
| 514 SCM calc_height = scm_c_module_lookup (mod, "calc-printable-height"); | 514 SCM calc_height = scm_c_module_lookup (mod, "calc-printable-height"); |
| 515 calc_height = scm_variable_ref (calc_height); | 515 calc_height = scm_variable_ref (calc_height); |
| 516 | 516 |
| 517 SCM height_scm = scm_apply_1 (calc_height, page, SCM_EOL); | 517 SCM height_scm = scm_apply_1 (calc_height, page, SCM_EOL); |
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| 1667 // FIXME: take into account the height of the footer | 1667 // FIXME: take into account the height of the footer |
| 1668 Real translate = min (line.shape_.begin_[DOWN], line.shape_.rest_[DOWN]); | 1668 Real translate = min (line.shape_.begin_[DOWN], line.shape_.rest_[DOWN]); |
| 1669 return max (0.0, max (padding, min_distance + translate)); | 1669 return max (0.0, max (padding, min_distance + translate)); |
| 1670 } | 1670 } |
| 1671 | 1671 |
| 1672 int | 1672 int |
| 1673 Page_breaking::orphan_penalty () const | 1673 Page_breaking::orphan_penalty () const |
| 1674 { | 1674 { |
| 1675 return orphan_penalty_; | 1675 return orphan_penalty_; |
| 1676 } | 1676 } |
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