1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/harfbuzz/src/hb-ot-shape-private.hh Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,102 @@
1.4 +/*
1.5 + * Copyright © 2010 Google, Inc.
1.6 + *
1.7 + * This is part of HarfBuzz, a text shaping library.
1.8 + *
1.9 + * Permission is hereby granted, without written agreement and without
1.10 + * license or royalty fees, to use, copy, modify, and distribute this
1.11 + * software and its documentation for any purpose, provided that the
1.12 + * above copyright notice and the following two paragraphs appear in
1.13 + * all copies of this software.
1.14 + *
1.15 + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
1.16 + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
1.17 + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
1.18 + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
1.19 + * DAMAGE.
1.20 + *
1.21 + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
1.22 + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
1.23 + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
1.24 + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
1.25 + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
1.26 + *
1.27 + * Google Author(s): Behdad Esfahbod
1.28 + */
1.29 +
1.30 +#ifndef HB_OT_SHAPE_PRIVATE_HH
1.31 +#define HB_OT_SHAPE_PRIVATE_HH
1.32 +
1.33 +#include "hb-private.hh"
1.34 +
1.35 +#include "hb-ot-map-private.hh"
1.36 +#include "hb-ot-layout-private.hh"
1.37 +
1.38 +
1.39 +
1.40 +struct hb_ot_shape_plan_t
1.41 +{
1.42 + hb_segment_properties_t props;
1.43 + const struct hb_ot_complex_shaper_t *shaper;
1.44 + hb_ot_map_t map;
1.45 + const void *data;
1.46 + hb_mask_t rtlm_mask, frac_mask, numr_mask, dnom_mask;
1.47 + hb_mask_t kern_mask;
1.48 + unsigned int has_frac : 1;
1.49 + unsigned int has_kern : 1;
1.50 +
1.51 + inline void collect_lookups (hb_tag_t table_tag, hb_set_t *lookups) const
1.52 + {
1.53 + unsigned int table_index;
1.54 + switch (table_tag) {
1.55 + case HB_OT_TAG_GSUB: table_index = 0; break;
1.56 + case HB_OT_TAG_GPOS: table_index = 1; break;
1.57 + default: return;
1.58 + }
1.59 + map.collect_lookups (table_index, lookups);
1.60 + }
1.61 + inline void substitute (hb_font_t *font, hb_buffer_t *buffer) const { map.substitute (this, font, buffer); }
1.62 + inline void position (hb_font_t *font, hb_buffer_t *buffer) const { map.position (this, font, buffer); }
1.63 +
1.64 + void finish (void) { map.finish (); }
1.65 +};
1.66 +
1.67 +struct hb_ot_shape_planner_t
1.68 +{
1.69 + /* In the order that they are filled in. */
1.70 + hb_face_t *face;
1.71 + hb_segment_properties_t props;
1.72 + const struct hb_ot_complex_shaper_t *shaper;
1.73 + hb_ot_map_builder_t map;
1.74 +
1.75 + hb_ot_shape_planner_t (const hb_shape_plan_t *master_plan) :
1.76 + face (master_plan->face_unsafe),
1.77 + props (master_plan->props),
1.78 + shaper (NULL),
1.79 + map (face, &props) {}
1.80 + ~hb_ot_shape_planner_t (void) { map.finish (); }
1.81 +
1.82 + inline void compile (hb_ot_shape_plan_t &plan)
1.83 + {
1.84 + plan.props = props;
1.85 + plan.shaper = shaper;
1.86 + map.compile (plan.map);
1.87 +
1.88 + plan.rtlm_mask = plan.map.get_1_mask (HB_TAG ('r','t','l','m'));
1.89 + plan.frac_mask = plan.map.get_1_mask (HB_TAG ('f','r','a','c'));
1.90 + plan.numr_mask = plan.map.get_1_mask (HB_TAG ('n','u','m','r'));
1.91 + plan.dnom_mask = plan.map.get_1_mask (HB_TAG ('d','n','o','m'));
1.92 +
1.93 + plan.kern_mask = plan.map.get_mask (HB_DIRECTION_IS_HORIZONTAL (plan.props.direction) ?
1.94 + HB_TAG ('k','e','r','n') : HB_TAG ('v','k','r','n'));
1.95 +
1.96 + plan.has_frac = plan.frac_mask || (plan.numr_mask && plan.dnom_mask);
1.97 + plan.has_kern = !!plan.kern_mask;
1.98 + }
1.99 +
1.100 + private:
1.101 + NO_COPY (hb_ot_shape_planner_t);
1.102 +};
1.103 +
1.104 +
1.105 +#endif /* HB_OT_SHAPE_PRIVATE_HH */
