--- /dev/null 2019-02-21 13:14:21.200397537 -0800 +++ new/src/java.desktop/share/native/libfontmanager/harfbuzz/hb-ot-vorg-table.hh 2019-02-28 12:04:47.230502165 -0800 @@ -0,0 +1,181 @@ +/* + * Copyright © 2018 Adobe Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Adobe Author(s): Michiharu Ariza + */ + +#ifndef HB_OT_VORG_TABLE_HH +#define HB_OT_VORG_TABLE_HH + +#include "hb-open-type.hh" + +/* + * VORG -- Vertical Origin Table + * https://docs.microsoft.com/en-us/typography/opentype/spec/vorg + */ +#define HB_OT_TAG_VORG HB_TAG('V','O','R','G') + +namespace OT { + +struct VertOriginMetric +{ + int cmp (hb_codepoint_t g) const { return glyph.cmp (g); } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + public: + GlyphID glyph; + FWORD vertOriginY; + + public: + DEFINE_SIZE_STATIC (4); +}; + +struct VORG +{ + static constexpr hb_tag_t tableTag = HB_OT_TAG_VORG; + + bool has_data () const { return version.to_int (); } + + int get_y_origin (hb_codepoint_t glyph) const + { + unsigned int i; + if (!vertYOrigins.bfind (glyph, &i)) + return defaultVertOriginY; + return vertYOrigins[i].vertOriginY; + } + + bool _subset (const hb_subset_plan_t *plan HB_UNUSED, + const VORG *vorg_table, + const hb_vector_t &subset_metrics, + unsigned int dest_sz, + void *dest) const + { + hb_serialize_context_t c (dest, dest_sz); + + VORG *subset_table = c.start_serialize (); + if (unlikely (!c.extend_min (*subset_table))) + return false; + + subset_table->version.major.set (1); + subset_table->version.minor.set (0); + + subset_table->defaultVertOriginY.set (vorg_table->defaultVertOriginY); + subset_table->vertYOrigins.len.set (subset_metrics.length); + + bool success = true; + if (subset_metrics.length > 0) + { + unsigned int size = VertOriginMetric::static_size * subset_metrics.length; + VertOriginMetric *metrics = c.allocate_size (size); + if (likely (metrics != nullptr)) + memcpy (metrics, &subset_metrics[0], size); + else + success = false; + } + c.end_serialize (); + + return success; + } + + bool subset (hb_subset_plan_t *plan) const + { + hb_blob_t *vorg_blob = hb_sanitize_context_t().reference_table (plan->source); + const VORG *vorg_table = vorg_blob->as (); + + /* count the number of glyphs to be included in the subset table */ + hb_vector_t subset_metrics; + subset_metrics.init (); + unsigned int glyph = 0; + unsigned int i = 0; + while ((glyph < plan->glyphs.length) && (i < vertYOrigins.len)) + { + if (plan->glyphs[glyph] > vertYOrigins[i].glyph) + i++; + else if (plan->glyphs[glyph] < vertYOrigins[i].glyph) + glyph++; + else + { + VertOriginMetric *metrics = subset_metrics.push (); + metrics->glyph.set (glyph); + metrics->vertOriginY.set (vertYOrigins[i].vertOriginY); + glyph++; + i++; + } + } + + /* alloc the new table */ + unsigned int dest_sz = VORG::min_size + VertOriginMetric::static_size * subset_metrics.length; + void *dest = (void *) malloc (dest_sz); + if (unlikely (!dest)) + { + subset_metrics.fini (); + hb_blob_destroy (vorg_blob); + return false; + } + + /* serialize the new table */ + if (!_subset (plan, vorg_table, subset_metrics, dest_sz, dest)) + { + subset_metrics.fini (); + free (dest); + hb_blob_destroy (vorg_blob); + return false; + } + + hb_blob_t *result = hb_blob_create ((const char *)dest, + dest_sz, + HB_MEMORY_MODE_READONLY, + dest, + free); + bool success = plan->add_table (HB_OT_TAG_VORG, result); + hb_blob_destroy (result); + subset_metrics.fini (); + hb_blob_destroy (vorg_blob); + return success; + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + version.major == 1 && + vertYOrigins.sanitize (c)); + } + + protected: + FixedVersion<> version; /* Version of VORG table. Set to 0x00010000u. */ + FWORD defaultVertOriginY; /* The default vertical origin. */ + SortedArrayOf + vertYOrigins; /* The array of vertical origins. */ + + public: + DEFINE_SIZE_ARRAY(8, vertYOrigins); +}; +} /* namespace OT */ + +#endif /* HB_OT_VORG_TABLE_HH */