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+/*
+ * Copyright © 2010 Google, 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.
+ *
+ * Google Author(s): Behdad Esfahbod
+ */
+
+#ifndef HB_OT_SHAPE_PRIVATE_HH
+#define HB_OT_SHAPE_PRIVATE_HH
+
+#include "hb-private.hh"
+
+#include "hb-ot-map-private.hh"
+#include "hb-ot-layout-private.hh"
+
+
+
+struct hb_ot_shape_plan_t
+{
+ hb_segment_properties_t props;
+ const struct hb_ot_complex_shaper_t *shaper;
+ hb_ot_map_t map;
+ const void *data;
+ hb_mask_t rtlm_mask, frac_mask, numr_mask, dnom_mask;
+ hb_mask_t kern_mask;
+ unsigned int has_frac : 1;
+ unsigned int has_kern : 1;
+ unsigned int has_mark : 1;
+
+ inline void collect_lookups (hb_tag_t table_tag, hb_set_t *lookups) const
+ {
+ unsigned int table_index;
+ switch (table_tag) {
+ case HB_OT_TAG_GSUB: table_index = 0; break;
+ case HB_OT_TAG_GPOS: table_index = 1; break;
+ default: return;
+ }
+ map.collect_lookups (table_index, lookups);
+ }
+ inline void substitute (hb_font_t *font, hb_buffer_t *buffer) const { map.substitute (this, font, buffer); }
+ inline void position (hb_font_t *font, hb_buffer_t *buffer) const { map.position (this, font, buffer); }
+
+ void finish (void) { map.finish (); }
+};
+
+struct hb_ot_shape_planner_t
+{
+ /* In the order that they are filled in. */
+ hb_face_t *face;
+ hb_segment_properties_t props;
+ const struct hb_ot_complex_shaper_t *shaper;
+ hb_ot_map_builder_t map;
+
+ hb_ot_shape_planner_t (const hb_shape_plan_t *master_plan) :
+ face (master_plan->face_unsafe),
+ props (master_plan->props),
+ shaper (NULL),
+ map (face, &props) {}
+ ~hb_ot_shape_planner_t (void) { map.finish (); }
+
+ inline void compile (hb_ot_shape_plan_t &plan,
+ const int *coords,
+ unsigned int num_coords)
+ {
+ plan.props = props;
+ plan.shaper = shaper;
+ map.compile (plan.map, coords, num_coords);
+
+ plan.rtlm_mask = plan.map.get_1_mask (HB_TAG ('r','t','l','m'));
+ plan.frac_mask = plan.map.get_1_mask (HB_TAG ('f','r','a','c'));
+ plan.numr_mask = plan.map.get_1_mask (HB_TAG ('n','u','m','r'));
+ plan.dnom_mask = plan.map.get_1_mask (HB_TAG ('d','n','o','m'));
+
+ plan.kern_mask = plan.map.get_mask (HB_DIRECTION_IS_HORIZONTAL (plan.props.direction) ?
+ HB_TAG ('k','e','r','n') : HB_TAG ('v','k','r','n'));
+
+ plan.has_frac = plan.frac_mask || (plan.numr_mask && plan.dnom_mask);
+ plan.has_kern = !!plan.kern_mask;
+ plan.has_mark = !!plan.map.get_1_mask (HB_TAG ('m','a','r','k'));
+ }
+
+ private:
+ NO_COPY (hb_ot_shape_planner_t);
+};
+
+
+#endif /* HB_OT_SHAPE_PRIVATE_HH */