diff options
author | Akira Kakuto <kakuto@fuk.kindai.ac.jp> | 2018-12-22 00:39:38 +0000 |
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committer | Akira Kakuto <kakuto@fuk.kindai.ac.jp> | 2018-12-22 00:39:38 +0000 |
commit | aefa260469999e53f3b8ea263fda94cdddef8ce3 (patch) | |
tree | e1182a668216a25f19d5f18ffcfec27cc7925b96 /Build/source/libs/harfbuzz/harfbuzz-src/src/hb-cff-interp-cs-common.hh | |
parent | 27205aecce351fee6bb1ad9a7c43d4b542e28a1a (diff) |
harfbuzz-2.3.0
git-svn-id: svn://tug.org/texlive/trunk@49473 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/libs/harfbuzz/harfbuzz-src/src/hb-cff-interp-cs-common.hh')
-rw-r--r-- | Build/source/libs/harfbuzz/harfbuzz-src/src/hb-cff-interp-cs-common.hh | 904 |
1 files changed, 904 insertions, 0 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-cff-interp-cs-common.hh b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-cff-interp-cs-common.hh new file mode 100644 index 00000000000..e78d5571c94 --- /dev/null +++ b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-cff-interp-cs-common.hh @@ -0,0 +1,904 @@ +/* + * 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_CFF_INTERP_CS_COMMON_HH +#define HB_CFF_INTERP_CS_COMMON_HH + +#include "hb.hh" +#include "hb-cff-interp-common.hh" + +namespace CFF { + +using namespace OT; + +enum CSType { + CSType_CharString, + CSType_GlobalSubr, + CSType_LocalSubr +}; + +struct CallContext +{ + void init (const SubByteStr substr_=SubByteStr (), CSType type_=CSType_CharString, unsigned int subr_num_=0) + { + substr = substr_; + type = type_; + subr_num = subr_num_; + } + + void fini () {} + + SubByteStr substr; + CSType type; + unsigned int subr_num; +}; + +/* call stack */ +const unsigned int kMaxCallLimit = 10; +struct CallStack : Stack<CallContext, kMaxCallLimit> {}; + +template <typename SUBRS> +struct BiasedSubrs +{ + void init (const SUBRS &subrs_) + { + subrs = &subrs_; + unsigned int nSubrs = get_count (); + if (nSubrs < 1240) + bias = 107; + else if (nSubrs < 33900) + bias = 1131; + else + bias = 32768; + } + + void fini () {} + + unsigned int get_count () const { return (subrs == nullptr)? 0: subrs->count; } + unsigned int get_bias () const { return bias; } + + ByteStr operator [] (unsigned int index) const + { + if (unlikely ((subrs == nullptr) || index >= subrs->count)) + return Null(ByteStr); + else + return (*subrs)[index]; + } + + protected: + unsigned int bias; + const SUBRS *subrs; +}; + +struct Point +{ + void init () + { + x.init (); + y.init (); + } + + void set_int (int _x, int _y) + { + x.set_int (_x); + y.set_int (_y); + } + + void move_x (const Number &dx) { x += dx; } + void move_y (const Number &dy) { y += dy; } + void move (const Number &dx, const Number &dy) { move_x (dx); move_y (dy); } + void move (const Point &d) { move_x (d.x); move_y (d.y); } + + Number x; + Number y; +}; + +template <typename ARG, typename SUBRS> +struct CSInterpEnv : InterpEnv<ARG> +{ + void init (const ByteStr &str, const SUBRS &globalSubrs_, const SUBRS &localSubrs_) + { + InterpEnv<ARG>::init (str); + + context.init (str, CSType_CharString); + seen_moveto = true; + seen_hintmask = false; + hstem_count = 0; + vstem_count = 0; + pt.init (); + callStack.init (); + globalSubrs.init (globalSubrs_); + localSubrs.init (localSubrs_); + } + void fini () + { + InterpEnv<ARG>::fini (); + + callStack.fini (); + globalSubrs.fini (); + localSubrs.fini (); + } + + bool in_error () const + { + return callStack.in_error () || SUPER::in_error (); + } + + bool popSubrNum (const BiasedSubrs<SUBRS>& biasedSubrs, unsigned int &subr_num) + { + int n = SUPER::argStack.pop_int (); + n += biasedSubrs.get_bias (); + if (unlikely ((n < 0) || ((unsigned int)n >= biasedSubrs.get_count ()))) + return false; + + subr_num = (unsigned int)n; + return true; + } + + void callSubr (const BiasedSubrs<SUBRS>& biasedSubrs, CSType type) + { + unsigned int subr_num; + + if (unlikely (!popSubrNum (biasedSubrs, subr_num) + || callStack.get_count () >= kMaxCallLimit)) + { + SUPER::set_error (); + return; + } + context.substr = SUPER::substr; + callStack.push (context); + + context.init ( biasedSubrs[subr_num], type, subr_num); + SUPER::substr = context.substr; + } + + void returnFromSubr () + { + if (unlikely (SUPER::substr.in_error ())) + SUPER::set_error (); + context = callStack.pop (); + SUPER::substr = context.substr; + } + + void determine_hintmask_size () + { + if (!seen_hintmask) + { + vstem_count += SUPER::argStack.get_count() / 2; + hintmask_size = (hstem_count + vstem_count + 7) >> 3; + seen_hintmask = true; + } + } + + void set_endchar (bool endchar_flag_) { endchar_flag = endchar_flag_; } + bool is_endchar () const { return endchar_flag; } + + const Number &get_x () const { return pt.x; } + const Number &get_y () const { return pt.y; } + const Point &get_pt () const { return pt; } + + void moveto (const Point &pt_ ) { pt = pt_; } + + public: + CallContext context; + bool endchar_flag; + bool seen_moveto; + bool seen_hintmask; + + unsigned int hstem_count; + unsigned int vstem_count; + unsigned int hintmask_size; + CallStack callStack; + BiasedSubrs<SUBRS> globalSubrs; + BiasedSubrs<SUBRS> localSubrs; + + private: + Point pt; + + typedef InterpEnv<ARG> SUPER; +}; + +template <typename ENV, typename PARAM> +struct PathProcsNull +{ + static void rmoveto (ENV &env, PARAM& param) {} + static void hmoveto (ENV &env, PARAM& param) {} + static void vmoveto (ENV &env, PARAM& param) {} + static void rlineto (ENV &env, PARAM& param) {} + static void hlineto (ENV &env, PARAM& param) {} + static void vlineto (ENV &env, PARAM& param) {} + static void rrcurveto (ENV &env, PARAM& param) {} + static void rcurveline (ENV &env, PARAM& param) {} + static void rlinecurve (ENV &env, PARAM& param) {} + static void vvcurveto (ENV &env, PARAM& param) {} + static void hhcurveto (ENV &env, PARAM& param) {} + static void vhcurveto (ENV &env, PARAM& param) {} + static void hvcurveto (ENV &env, PARAM& param) {} + static void moveto (ENV &env, PARAM& param, const Point &pt) {} + static void line (ENV &env, PARAM& param, const Point &pt1) {} + static void curve (ENV &env, PARAM& param, const Point &pt1, const Point &pt2, const Point &pt3) {} + static void hflex (ENV &env, PARAM& param) {} + static void flex (ENV &env, PARAM& param) {} + static void hflex1 (ENV &env, PARAM& param) {} + static void flex1 (ENV &env, PARAM& param) {} +}; + +template <typename ARG, typename OPSET, typename ENV, typename PARAM, typename PATH=PathProcsNull<ENV, PARAM> > +struct CSOpSet : OpSet<ARG> +{ + static void process_op (OpCode op, ENV &env, PARAM& param) + { + switch (op) { + + case OpCode_return: + env.returnFromSubr (); + break; + case OpCode_endchar: + OPSET::check_width (op, env, param); + env.set_endchar (true); + OPSET::flush_args_and_op (op, env, param); + break; + + case OpCode_fixedcs: + env.argStack.push_fixed_from_substr (env.substr); + break; + + case OpCode_callsubr: + env.callSubr (env.localSubrs, CSType_LocalSubr); + break; + + case OpCode_callgsubr: + env.callSubr (env.globalSubrs, CSType_GlobalSubr); + break; + + case OpCode_hstem: + case OpCode_hstemhm: + OPSET::check_width (op, env, param); + OPSET::process_hstem (op, env, param); + break; + case OpCode_vstem: + case OpCode_vstemhm: + OPSET::check_width (op, env, param); + OPSET::process_vstem (op, env, param); + break; + case OpCode_hintmask: + case OpCode_cntrmask: + OPSET::check_width (op, env, param); + OPSET::process_hintmask (op, env, param); + break; + case OpCode_rmoveto: + OPSET::check_width (op, env, param); + PATH::rmoveto (env, param); + OPSET::process_post_move (op, env, param); + break; + case OpCode_hmoveto: + OPSET::check_width (op, env, param); + PATH::hmoveto (env, param); + OPSET::process_post_move (op, env, param); + break; + case OpCode_vmoveto: + OPSET::check_width (op, env, param); + PATH::vmoveto (env, param); + OPSET::process_post_move (op, env, param); + break; + case OpCode_rlineto: + PATH::rlineto (env, param); + process_post_path (op, env, param); + break; + case OpCode_hlineto: + PATH::hlineto (env, param); + process_post_path (op, env, param); + break; + case OpCode_vlineto: + PATH::vlineto (env, param); + process_post_path (op, env, param); + break; + case OpCode_rrcurveto: + PATH::rrcurveto (env, param); + process_post_path (op, env, param); + break; + case OpCode_rcurveline: + PATH::rcurveline (env, param); + process_post_path (op, env, param); + break; + case OpCode_rlinecurve: + PATH::rlinecurve (env, param); + process_post_path (op, env, param); + break; + case OpCode_vvcurveto: + PATH::vvcurveto (env, param); + process_post_path (op, env, param); + break; + case OpCode_hhcurveto: + PATH::hhcurveto (env, param); + process_post_path (op, env, param); + break; + case OpCode_vhcurveto: + PATH::vhcurveto (env, param); + process_post_path (op, env, param); + break; + case OpCode_hvcurveto: + PATH::hvcurveto (env, param); + process_post_path (op, env, param); + break; + + case OpCode_hflex: + PATH::hflex (env, param); + OPSET::process_post_flex (op, env, param); + break; + + case OpCode_flex: + PATH::flex (env, param); + OPSET::process_post_flex (op, env, param); + break; + + case OpCode_hflex1: + PATH::hflex1 (env, param); + OPSET::process_post_flex (op, env, param); + break; + + case OpCode_flex1: + PATH::flex1 (env, param); + OPSET::process_post_flex (op, env, param); + break; + + default: + SUPER::process_op (op, env); + break; + } + } + + static void process_hstem (OpCode op, ENV &env, PARAM& param) + { + env.hstem_count += env.argStack.get_count () / 2; + OPSET::flush_args_and_op (op, env, param); + } + + static void process_vstem (OpCode op, ENV &env, PARAM& param) + { + env.vstem_count += env.argStack.get_count () / 2; + OPSET::flush_args_and_op (op, env, param); + } + + static void process_hintmask (OpCode op, ENV &env, PARAM& param) + { + env.determine_hintmask_size (); + if (likely (env.substr.avail (env.hintmask_size))) + { + OPSET::flush_hintmask (op, env, param); + env.substr.inc (env.hintmask_size); + } + } + + static void process_post_flex (OpCode op, ENV &env, PARAM& param) + { + OPSET::flush_args_and_op (op, env, param); + } + + static void check_width (OpCode op, ENV &env, PARAM& param) + {} + + static void process_post_move (OpCode op, ENV &env, PARAM& param) + { + if (!env.seen_moveto) + { + env.determine_hintmask_size (); + env.seen_moveto = true; + } + OPSET::flush_args_and_op (op, env, param); + } + + static void process_post_path (OpCode op, ENV &env, PARAM& param) + { + OPSET::flush_args_and_op (op, env, param); + } + + static void flush_args_and_op (OpCode op, ENV &env, PARAM& param) + { + OPSET::flush_args (env, param); + OPSET::flush_op (op, env, param); + } + + static void flush_args (ENV &env, PARAM& param) + { + env.pop_n_args (env.argStack.get_count ()); + } + + static void flush_op (OpCode op, ENV &env, PARAM& param) + { + } + + static void flush_hintmask (OpCode op, ENV &env, PARAM& param) + { + OPSET::flush_args_and_op (op, env, param); + } + + static bool is_number_op (OpCode op) + { + switch (op) + { + case OpCode_shortint: + case OpCode_fixedcs: + case OpCode_TwoBytePosInt0: case OpCode_TwoBytePosInt1: + case OpCode_TwoBytePosInt2: case OpCode_TwoBytePosInt3: + case OpCode_TwoByteNegInt0: case OpCode_TwoByteNegInt1: + case OpCode_TwoByteNegInt2: case OpCode_TwoByteNegInt3: + return true; + + default: + /* 1-byte integer */ + return (OpCode_OneByteIntFirst <= op) && (op <= OpCode_OneByteIntLast); + } + } + + protected: + typedef OpSet<ARG> SUPER; +}; + +template <typename PATH, typename ENV, typename PARAM> +struct PathProcs +{ + static void rmoveto (ENV &env, PARAM& param) + { + Point pt1 = env.get_pt (); + const Number &dy = env.pop_arg (); + const Number &dx = env.pop_arg (); + pt1.move (dx, dy); + PATH::moveto (env, param, pt1); + } + + static void hmoveto (ENV &env, PARAM& param) + { + Point pt1 = env.get_pt (); + pt1.move_x (env.pop_arg ()); + PATH::moveto (env, param, pt1); + } + + static void vmoveto (ENV &env, PARAM& param) + { + Point pt1 = env.get_pt (); + pt1.move_y (env.pop_arg ()); + PATH::moveto (env, param, pt1); + } + + static void rlineto (ENV &env, PARAM& param) + { + for (unsigned int i = 0; i + 2 <= env.argStack.get_count (); i += 2) + { + Point pt1 = env.get_pt (); + pt1.move (env.eval_arg (i), env.eval_arg (i+1)); + PATH::line (env, param, pt1); + } + } + + static void hlineto (ENV &env, PARAM& param) + { + Point pt1; + unsigned int i = 0; + for (; i + 2 <= env.argStack.get_count (); i += 2) + { + pt1 = env.get_pt (); + pt1.move_x (env.eval_arg (i)); + PATH::line (env, param, pt1); + pt1.move_y (env.eval_arg (i+1)); + PATH::line (env, param, pt1); + } + if (i < env.argStack.get_count ()) + { + pt1 = env.get_pt (); + pt1.move_x (env.eval_arg (i)); + PATH::line (env, param, pt1); + } + } + + static void vlineto (ENV &env, PARAM& param) + { + Point pt1; + unsigned int i = 0; + for (; i + 2 <= env.argStack.get_count (); i += 2) + { + pt1 = env.get_pt (); + pt1.move_y (env.eval_arg (i)); + PATH::line (env, param, pt1); + pt1.move_x (env.eval_arg (i+1)); + PATH::line (env, param, pt1); + } + if (i < env.argStack.get_count ()) + { + pt1 = env.get_pt (); + pt1.move_y (env.eval_arg (i)); + PATH::line (env, param, pt1); + } + } + + static void rrcurveto (ENV &env, PARAM& param) + { + for (unsigned int i = 0; i + 6 <= env.argStack.get_count (); i += 6) + { + Point pt1 = env.get_pt (); + pt1.move (env.eval_arg (i), env.eval_arg (i+1)); + Point pt2 = pt1; + pt2.move (env.eval_arg (i+2), env.eval_arg (i+3)); + Point pt3 = pt2; + pt3.move (env.eval_arg (i+4), env.eval_arg (i+5)); + PATH::curve (env, param, pt1, pt2, pt3); + } + } + + static void rcurveline (ENV &env, PARAM& param) + { + unsigned int i = 0; + for (; i + 6 <= env.argStack.get_count (); i += 6) + { + Point pt1 = env.get_pt (); + pt1.move (env.eval_arg (i), env.eval_arg (i+1)); + Point pt2 = pt1; + pt2.move (env.eval_arg (i+2), env.eval_arg (i+3)); + Point pt3 = pt2; + pt3.move (env.eval_arg (i+4), env.eval_arg (i+5)); + PATH::curve (env, param, pt1, pt2, pt3); + } + for (; i + 2 <= env.argStack.get_count (); i += 2) + { + Point pt1 = env.get_pt (); + pt1.move (env.eval_arg (i), env.eval_arg (i+1)); + PATH::line (env, param, pt1); + } + } + + static void rlinecurve (ENV &env, PARAM& param) + { + unsigned int i = 0; + unsigned int line_limit = (env.argStack.get_count () % 6); + for (; i + 2 <= line_limit; i += 2) + { + Point pt1 = env.get_pt (); + pt1.move (env.eval_arg (i), env.eval_arg (i+1)); + PATH::line (env, param, pt1); + } + for (; i + 6 <= env.argStack.get_count (); i += 6) + { + Point pt1 = env.get_pt (); + pt1.move (env.eval_arg (i), env.eval_arg (i+1)); + Point pt2 = pt1; + pt2.move (env.eval_arg (i+2), env.eval_arg (i+3)); + Point pt3 = pt2; + pt3.move (env.eval_arg (i+4), env.eval_arg (i+5)); + PATH::curve (env, param, pt1, pt2, pt3); + } + } + + static void vvcurveto (ENV &env, PARAM& param) + { + unsigned int i = 0; + Point pt1 = env.get_pt (); + if ((env.argStack.get_count () & 1) != 0) + pt1.move_x (env.eval_arg (i++)); + for (; i + 4 <= env.argStack.get_count (); i += 4) + { + pt1.move_y (env.eval_arg (i)); + Point pt2 = pt1; + pt2.move (env.eval_arg (i+1), env.eval_arg (i+2)); + Point pt3 = pt2; + pt3.move_y (env.eval_arg (i+3)); + PATH::curve (env, param, pt1, pt2, pt3); + pt1 = env.get_pt (); + } + } + + static void hhcurveto (ENV &env, PARAM& param) + { + unsigned int i = 0; + Point pt1 = env.get_pt (); + if ((env.argStack.get_count () & 1) != 0) + pt1.move_y (env.eval_arg (i++)); + for (; i + 4 <= env.argStack.get_count (); i += 4) + { + pt1.move_x (env.eval_arg (i)); + Point pt2 = pt1; + pt2.move (env.eval_arg (i+1), env.eval_arg (i+2)); + Point pt3 = pt2; + pt3.move_x (env.eval_arg (i+3)); + PATH::curve (env, param, pt1, pt2, pt3); + pt1 = env.get_pt (); + } + } + + static void vhcurveto (ENV &env, PARAM& param) + { + Point pt1, pt2, pt3; + unsigned int i = 0; + if ((env.argStack.get_count () % 8) >= 4) + { + Point pt1 = env.get_pt (); + pt1.move_y (env.eval_arg (i)); + Point pt2 = pt1; + pt2.move (env.eval_arg (i+1), env.eval_arg (i+2)); + Point pt3 = pt2; + pt3.move_x (env.eval_arg (i+3)); + i += 4; + + for (; i + 8 <= env.argStack.get_count (); i += 8) + { + PATH::curve (env, param, pt1, pt2, pt3); + pt1 = env.get_pt (); + pt1.move_x (env.eval_arg (i)); + pt2 = pt1; + pt2.move (env.eval_arg (i+1), env.eval_arg (i+2)); + pt3 = pt2; + pt3.move_y (env.eval_arg (i+3)); + PATH::curve (env, param, pt1, pt2, pt3); + + pt1 = pt3; + pt1.move_y (env.eval_arg (i+4)); + pt2 = pt1; + pt2.move (env.eval_arg (i+5), env.eval_arg (i+6)); + pt3 = pt2; + pt3.move_x (env.eval_arg (i+7)); + } + if (i < env.argStack.get_count ()) + pt3.move_y (env.eval_arg (i)); + PATH::curve (env, param, pt1, pt2, pt3); + } + else + { + for (; i + 8 <= env.argStack.get_count (); i += 8) + { + pt1 = env.get_pt (); + pt1.move_y (env.eval_arg (i)); + pt2 = pt1; + pt2.move (env.eval_arg (i+1), env.eval_arg (i+2)); + pt3 = pt2; + pt3.move_x (env.eval_arg (i+3)); + PATH::curve (env, param, pt1, pt2, pt3); + + pt1 = pt3; + pt1.move_x (env.eval_arg (i+4)); + pt2 = pt1; + pt2.move (env.eval_arg (i+5), env.eval_arg (i+6)); + pt3 = pt2; + pt3.move_y (env.eval_arg (i+7)); + if ((env.argStack.get_count () - i < 16) && ((env.argStack.get_count () & 1) != 0)) + pt3.move_x (env.eval_arg (i+8)); + PATH::curve (env, param, pt1, pt2, pt3); + } + } + } + + static void hvcurveto (ENV &env, PARAM& param) + { + Point pt1, pt2, pt3; + unsigned int i = 0; + if ((env.argStack.get_count () % 8) >= 4) + { + Point pt1 = env.get_pt (); + pt1.move_x (env.eval_arg (i)); + Point pt2 = pt1; + pt2.move (env.eval_arg (i+1), env.eval_arg (i+2)); + Point pt3 = pt2; + pt3.move_y (env.eval_arg (i+3)); + i += 4; + + for (; i + 8 <= env.argStack.get_count (); i += 8) + { + PATH::curve (env, param, pt1, pt2, pt3); + pt1 = env.get_pt (); + pt1.move_y (env.eval_arg (i)); + pt2 = pt1; + pt2.move (env.eval_arg (i+1), env.eval_arg (i+2)); + pt3 = pt2; + pt3.move_x (env.eval_arg (i+3)); + PATH::curve (env, param, pt1, pt2, pt3); + + pt1 = pt3; + pt1.move_x (env.eval_arg (i+4)); + pt2 = pt1; + pt2.move (env.eval_arg (i+5), env.eval_arg (i+6)); + pt3 = pt2; + pt3.move_y (env.eval_arg (i+7)); + } + if (i < env.argStack.get_count ()) + pt3.move_x (env.eval_arg (i)); + PATH::curve (env, param, pt1, pt2, pt3); + } + else + { + for (; i + 8 <= env.argStack.get_count (); i += 8) + { + pt1 = env.get_pt (); + pt1.move_x (env.eval_arg (i)); + pt2 = pt1; + pt2.move (env.eval_arg (i+1), env.eval_arg (i+2)); + pt3 = pt2; + pt3.move_y (env.eval_arg (i+3)); + PATH::curve (env, param, pt1, pt2, pt3); + + pt1 = pt3; + pt1.move_y (env.eval_arg (i+4)); + pt2 = pt1; + pt2.move (env.eval_arg (i+5), env.eval_arg (i+6)); + pt3 = pt2; + pt3.move_x (env.eval_arg (i+7)); + if ((env.argStack.get_count () - i < 16) && ((env.argStack.get_count () & 1) != 0)) + pt3.move_y (env.eval_arg (i+8)); + PATH::curve (env, param, pt1, pt2, pt3); + } + } + } + + /* default actions to be overridden */ + static void moveto (ENV &env, PARAM& param, const Point &pt) + { env.moveto (pt); } + + static void line (ENV &env, PARAM& param, const Point &pt1) + { PATH::moveto (env, param, pt1); } + + static void curve (ENV &env, PARAM& param, const Point &pt1, const Point &pt2, const Point &pt3) + { PATH::moveto (env, param, pt3); } + + static void hflex (ENV &env, PARAM& param) + { + if (likely (env.argStack.get_count () == 7)) + { + Point pt1 = env.get_pt (); + pt1.move_x (env.eval_arg (0)); + Point pt2 = pt1; + pt2.move (env.eval_arg (1), env.eval_arg (2)); + Point pt3 = pt2; + pt3.move_x (env.eval_arg (3)); + Point pt4 = pt3; + pt4.move_x (env.eval_arg (4)); + Point pt5 = pt4; + pt5.move_x (env.eval_arg (5)); + pt5.y = pt1.y; + Point pt6 = pt5; + pt6.move_x (env.eval_arg (6)); + + curve2 (env, param, pt1, pt2, pt3, pt4, pt5, pt6); + } + else + env.set_error (); + } + + static void flex (ENV &env, PARAM& param) + { + if (likely (env.argStack.get_count () == 13)) + { + Point pt1 = env.get_pt (); + pt1.move (env.eval_arg (0), env.eval_arg (1)); + Point pt2 = pt1; + pt2.move (env.eval_arg (2), env.eval_arg (3)); + Point pt3 = pt2; + pt3.move (env.eval_arg (4), env.eval_arg (5)); + Point pt4 = pt3; + pt4.move (env.eval_arg (6), env.eval_arg (7)); + Point pt5 = pt4; + pt5.move (env.eval_arg (8), env.eval_arg (9)); + Point pt6 = pt5; + pt6.move (env.eval_arg (10), env.eval_arg (11)); + + curve2 (env, param, pt1, pt2, pt3, pt4, pt5, pt6); + } + else + env.set_error (); + } + + static void hflex1 (ENV &env, PARAM& param) + { + if (likely (env.argStack.get_count () == 9)) + { + Point pt1 = env.get_pt (); + pt1.move (env.eval_arg (0), env.eval_arg (1)); + Point pt2 = pt1; + pt2.move (env.eval_arg (2), env.eval_arg (3)); + Point pt3 = pt2; + pt3.move_x (env.eval_arg (4)); + Point pt4 = pt3; + pt4.move_x (env.eval_arg (5)); + Point pt5 = pt4; + pt5.move (env.eval_arg (6), env.eval_arg (7)); + Point pt6 = pt5; + pt6.move_x (env.eval_arg (8)); + pt6.y = env.get_pt ().y; + + curve2 (env, param, pt1, pt2, pt3, pt4, pt5, pt6); + } + else + env.set_error (); + } + + static void flex1 (ENV &env, PARAM& param) + { + if (likely (env.argStack.get_count () == 11)) + { + Point d; + d.init (); + for (unsigned int i = 0; i < 10; i += 2) + d.move (env.eval_arg (i), env.eval_arg (i+1)); + + Point pt1 = env.get_pt (); + pt1.move (env.eval_arg (0), env.eval_arg (1)); + Point pt2 = pt1; + pt2.move (env.eval_arg (2), env.eval_arg (3)); + Point pt3 = pt2; + pt3.move (env.eval_arg (4), env.eval_arg (5)); + Point pt4 = pt3; + pt4.move (env.eval_arg (6), env.eval_arg (7)); + Point pt5 = pt4; + pt5.move (env.eval_arg (8), env.eval_arg (9)); + Point pt6 = pt5; + + if (fabs (d.x.to_real ()) > fabs (d.y.to_real ())) + { + pt6.move_x (env.eval_arg (10)); + pt6.y = env.get_pt ().y; + } + else + { + pt6.x = env.get_pt ().x; + pt6.move_y (env.eval_arg (10)); + } + + curve2 (env, param, pt1, pt2, pt3, pt4, pt5, pt6); + } + else + env.set_error (); + } + + protected: + static void curve2 (ENV &env, PARAM& param, + const Point &pt1, const Point &pt2, const Point &pt3, + const Point &pt4, const Point &pt5, const Point &pt6) + { + PATH::curve (env, param, pt1, pt2, pt3); + PATH::curve (env, param, pt4, pt5, pt6); + } +}; + +template <typename ENV, typename OPSET, typename PARAM> +struct CSInterpreter : Interpreter<ENV> +{ + bool interpret (PARAM& param) + { + SUPER::env.set_endchar (false); + + for (;;) { + OPSET::process_op (SUPER::env.fetch_op (), SUPER::env, param); + if (unlikely (SUPER::env.in_error ())) + return false; + if (SUPER::env.is_endchar ()) + break; + } + + return true; + } + + private: + typedef Interpreter<ENV> SUPER; +}; + +} /* namespace CFF */ + +#endif /* HB_CFF_INTERP_CS_COMMON_HH */ |