summaryrefslogtreecommitdiffstats
path: root/gfx/harfbuzz/src/hb-cff1-interp-cs.hh
diff options
context:
space:
mode:
Diffstat (limited to 'gfx/harfbuzz/src/hb-cff1-interp-cs.hh')
-rw-r--r--gfx/harfbuzz/src/hb-cff1-interp-cs.hh160
1 files changed, 160 insertions, 0 deletions
diff --git a/gfx/harfbuzz/src/hb-cff1-interp-cs.hh b/gfx/harfbuzz/src/hb-cff1-interp-cs.hh
new file mode 100644
index 0000000000..d8868efa53
--- /dev/null
+++ b/gfx/harfbuzz/src/hb-cff1-interp-cs.hh
@@ -0,0 +1,160 @@
+/*
+ * 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_CFF1_INTERP_CS_HH
+#define HB_CFF1_INTERP_CS_HH
+
+#include "hb.hh"
+#include "hb-cff-interp-cs-common.hh"
+
+namespace CFF {
+
+using namespace OT;
+
+typedef biased_subrs_t<CFF1Subrs> cff1_biased_subrs_t;
+
+struct cff1_cs_interp_env_t : cs_interp_env_t<number_t, CFF1Subrs>
+{
+ template <typename ACC>
+ cff1_cs_interp_env_t (const hb_ubytes_t &str, ACC &acc, unsigned int fd,
+ const int *coords_=nullptr, unsigned int num_coords_=0)
+ : SUPER (str, acc.globalSubrs, acc.privateDicts[fd].localSubrs)
+ {
+ processed_width = false;
+ has_width = false;
+ arg_start = 0;
+ in_seac = false;
+ }
+
+ void set_width (bool has_width_)
+ {
+ if (likely (!processed_width && (SUPER::argStack.get_count () > 0)))
+ {
+ if (has_width_)
+ {
+ width = SUPER::argStack[0];
+ has_width = true;
+ arg_start = 1;
+ }
+ }
+ processed_width = true;
+ }
+
+ void clear_args ()
+ {
+ arg_start = 0;
+ SUPER::clear_args ();
+ }
+
+ void set_in_seac (bool _in_seac) { in_seac = _in_seac; }
+
+ bool processed_width;
+ bool has_width;
+ unsigned int arg_start;
+ number_t width;
+ bool in_seac;
+
+ private:
+ typedef cs_interp_env_t<number_t, CFF1Subrs> SUPER;
+};
+
+template <typename OPSET, typename PARAM, typename PATH=path_procs_null_t<cff1_cs_interp_env_t, PARAM>>
+struct cff1_cs_opset_t : cs_opset_t<number_t, OPSET, cff1_cs_interp_env_t, PARAM, PATH>
+{
+ /* PostScript-originated legacy opcodes (OpCode_add etc) are unsupported */
+ /* Type 1-originated deprecated opcodes, seac behavior of endchar and dotsection are supported */
+
+ static void process_op (op_code_t op, cff1_cs_interp_env_t &env, PARAM& param)
+ {
+ switch (op) {
+ case OpCode_dotsection:
+ SUPER::flush_args_and_op (op, env, param);
+ break;
+
+ case OpCode_endchar:
+ OPSET::check_width (op, env, param);
+ if (env.argStack.get_count () >= 4)
+ {
+ OPSET::process_seac (env, param);
+ }
+ OPSET::flush_args_and_op (op, env, param);
+ env.set_endchar (true);
+ break;
+
+ default:
+ SUPER::process_op (op, env, param);
+ }
+ }
+
+ static void check_width (op_code_t op, cff1_cs_interp_env_t &env, PARAM& param)
+ {
+ if (!env.processed_width)
+ {
+ bool has_width = false;
+ switch (op)
+ {
+ case OpCode_endchar:
+ case OpCode_hstem:
+ case OpCode_hstemhm:
+ case OpCode_vstem:
+ case OpCode_vstemhm:
+ case OpCode_hintmask:
+ case OpCode_cntrmask:
+ has_width = ((env.argStack.get_count () & 1) != 0);
+ break;
+ case OpCode_hmoveto:
+ case OpCode_vmoveto:
+ has_width = (env.argStack.get_count () > 1);
+ break;
+ case OpCode_rmoveto:
+ has_width = (env.argStack.get_count () > 2);
+ break;
+ default:
+ return;
+ }
+ env.set_width (has_width);
+ }
+ }
+
+ static void process_seac (cff1_cs_interp_env_t &env, PARAM& param)
+ {
+ }
+
+ static void flush_args (cff1_cs_interp_env_t &env, PARAM& param)
+ {
+ SUPER::flush_args (env, param);
+ env.clear_args (); /* pop off width */
+ }
+
+ private:
+ typedef cs_opset_t<number_t, OPSET, cff1_cs_interp_env_t, PARAM, PATH> SUPER;
+};
+
+template <typename OPSET, typename PARAM>
+using cff1_cs_interpreter_t = cs_interpreter_t<cff1_cs_interp_env_t, OPSET, PARAM>;
+
+} /* namespace CFF */
+
+#endif /* HB_CFF1_INTERP_CS_HH */