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virtualx-engine/thirdparty/harfbuzz/src/hb-cff-interp-cs-common.hh

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/*
* 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 cs_type_t {
CSType_CharString,
CSType_GlobalSubr,
CSType_LocalSubr
};
struct call_context_t
{
void init (const byte_str_ref_t substr_=byte_str_ref_t (), cs_type_t type_=CSType_CharString, unsigned int subr_num_=0)
{
str_ref = substr_;
type = type_;
subr_num = subr_num_;
}
void fini () {}
byte_str_ref_t str_ref;
cs_type_t type;
unsigned int subr_num;
};
/* call stack */
const unsigned int kMaxCallLimit = 10;
struct call_stack_t : cff_stack_t<call_context_t, kMaxCallLimit> {};
template <typename SUBRS>
struct biased_subrs_t
{
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 ? subrs->count : 0; }
unsigned int get_bias () const { return bias; }
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hb_ubytes_t operator [] (unsigned int index) const
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{
if (unlikely (!subrs || index >= subrs->count))
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return hb_ubytes_t ();
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else
return (*subrs)[index];
}
protected:
unsigned int bias;
const SUBRS *subrs;
};
struct point_t
{
void set_int (int _x, int _y)
{
x.set_int (_x);
y.set_int (_y);
}
void move_x (const number_t &dx) { x += dx; }
void move_y (const number_t &dy) { y += dy; }
void move (const number_t &dx, const number_t &dy) { move_x (dx); move_y (dy); }
void move (const point_t &d) { move_x (d.x); move_y (d.y); }
number_t x;
number_t y;
};
template <typename ARG, typename SUBRS>
struct cs_interp_env_t : interp_env_t<ARG>
{
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cs_interp_env_t (const hb_ubytes_t &str, const SUBRS *globalSubrs_, const SUBRS *localSubrs_) :
interp_env_t<ARG> (str)
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{
context.init (str, CSType_CharString);
seen_moveto = true;
seen_hintmask = false;
hstem_count = 0;
vstem_count = 0;
hintmask_size = 0;
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pt.set_int (0, 0);
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globalSubrs.init (globalSubrs_);
localSubrs.init (localSubrs_);
}
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~cs_interp_env_t ()
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{
globalSubrs.fini ();
localSubrs.fini ();
}
bool in_error () const
{
return callStack.in_error () || SUPER::in_error ();
}
bool pop_subr_num (const biased_subrs_t<SUBRS>& biasedSubrs, unsigned int &subr_num)
{
subr_num = 0;
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 call_subr (const biased_subrs_t<SUBRS>& biasedSubrs, cs_type_t type)
{
unsigned int subr_num = 0;
if (unlikely (!pop_subr_num (biasedSubrs, subr_num)
|| callStack.get_count () >= kMaxCallLimit))
{
SUPER::set_error ();
return;
}
context.str_ref = SUPER::str_ref;
callStack.push (context);
context.init ( biasedSubrs[subr_num], type, subr_num);
SUPER::str_ref = context.str_ref;
}
void return_from_subr ()
{
if (unlikely (SUPER::str_ref.in_error ()))
SUPER::set_error ();
context = callStack.pop ();
SUPER::str_ref = context.str_ref;
}
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_t &get_x () const { return pt.x; }
const number_t &get_y () const { return pt.y; }
const point_t &get_pt () const { return pt; }
void moveto (const point_t &pt_ ) { pt = pt_; }
public:
call_context_t context;
bool endchar_flag;
bool seen_moveto;
bool seen_hintmask;
unsigned int hstem_count;
unsigned int vstem_count;
unsigned int hintmask_size;
call_stack_t callStack;
biased_subrs_t<SUBRS> globalSubrs;
biased_subrs_t<SUBRS> localSubrs;
private:
point_t pt;
typedef interp_env_t<ARG> SUPER;
};
template <typename ENV, typename PARAM>
struct path_procs_null_t
{
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_t &pt) {}
static void line (ENV &env, PARAM& param, const point_t &pt1) {}
static void curve (ENV &env, PARAM& param, const point_t &pt1, const point_t &pt2, const point_t &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=path_procs_null_t<ENV, PARAM>>
struct cs_opset_t : opset_t<ARG>
{
static void process_op (op_code_t op, ENV &env, PARAM& param)
{
switch (op) {
case OpCode_return:
env.return_from_subr ();
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.str_ref);
break;
case OpCode_callsubr:
env.call_subr (env.localSubrs, CSType_LocalSubr);
break;
case OpCode_callgsubr:
env.call_subr (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 (op_code_t 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 (op_code_t 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 (op_code_t op, ENV &env, PARAM& param)
{
env.determine_hintmask_size ();
if (likely (env.str_ref.avail (env.hintmask_size)))
{
OPSET::flush_hintmask (op, env, param);
env.str_ref.inc (env.hintmask_size);
}
}
static void process_post_flex (op_code_t op, ENV &env, PARAM& param)
{
OPSET::flush_args_and_op (op, env, param);
}
static void check_width (op_code_t op, ENV &env, PARAM& param)
{}
static void process_post_move (op_code_t 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 (op_code_t op, ENV &env, PARAM& param)
{
OPSET::flush_args_and_op (op, env, param);
}
static void flush_args_and_op (op_code_t 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 (op_code_t op, ENV &env, PARAM& param)
{
}
static void flush_hintmask (op_code_t op, ENV &env, PARAM& param)
{
OPSET::flush_args_and_op (op, env, param);
}
static bool is_number_op (op_code_t 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_t<ARG> SUPER;
};
template <typename PATH, typename ENV, typename PARAM>
struct path_procs_t
{
static void rmoveto (ENV &env, PARAM& param)
{
point_t pt1 = env.get_pt ();
const number_t &dy = env.pop_arg ();
const number_t &dx = env.pop_arg ();
pt1.move (dx, dy);
PATH::moveto (env, param, pt1);
}
static void hmoveto (ENV &env, PARAM& param)
{
point_t pt1 = env.get_pt ();
pt1.move_x (env.pop_arg ());
PATH::moveto (env, param, pt1);
}
static void vmoveto (ENV &env, PARAM& param)
{
point_t 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_t 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_t 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_t 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_t pt1 = env.get_pt ();
pt1.move (env.eval_arg (i), env.eval_arg (i+1));
point_t pt2 = pt1;
pt2.move (env.eval_arg (i+2), env.eval_arg (i+3));
point_t 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 arg_count = env.argStack.get_count ();
if (unlikely (arg_count < 8))
return;
unsigned int i = 0;
unsigned int curve_limit = arg_count - 2;
for (; i + 6 <= curve_limit; i += 6)
{
point_t pt1 = env.get_pt ();
pt1.move (env.eval_arg (i), env.eval_arg (i+1));
point_t pt2 = pt1;
pt2.move (env.eval_arg (i+2), env.eval_arg (i+3));
point_t pt3 = pt2;
pt3.move (env.eval_arg (i+4), env.eval_arg (i+5));
PATH::curve (env, param, pt1, pt2, pt3);
}
point_t 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 arg_count = env.argStack.get_count ();
if (unlikely (arg_count < 8))
return;
unsigned int i = 0;
unsigned int line_limit = arg_count - 6;
for (; i + 2 <= line_limit; i += 2)
{
point_t pt1 = env.get_pt ();
pt1.move (env.eval_arg (i), env.eval_arg (i+1));
PATH::line (env, param, pt1);
}
point_t pt1 = env.get_pt ();
pt1.move (env.eval_arg (i), env.eval_arg (i+1));
point_t pt2 = pt1;
pt2.move (env.eval_arg (i+2), env.eval_arg (i+3));
point_t 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_t 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_t pt2 = pt1;
pt2.move (env.eval_arg (i+1), env.eval_arg (i+2));
point_t 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_t 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_t pt2 = pt1;
pt2.move (env.eval_arg (i+1), env.eval_arg (i+2));
point_t 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_t pt1, pt2, pt3;
unsigned int i = 0;
if ((env.argStack.get_count () % 8) >= 4)
{
point_t pt1 = env.get_pt ();
pt1.move_y (env.eval_arg (i));
point_t pt2 = pt1;
pt2.move (env.eval_arg (i+1), env.eval_arg (i+2));
point_t 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_t pt1, pt2, pt3;
unsigned int i = 0;
if ((env.argStack.get_count () % 8) >= 4)
{
point_t pt1 = env.get_pt ();
pt1.move_x (env.eval_arg (i));
point_t pt2 = pt1;
pt2.move (env.eval_arg (i+1), env.eval_arg (i+2));
point_t 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_t &pt)
{ env.moveto (pt); }
static void line (ENV &env, PARAM& param, const point_t &pt1)
{ PATH::moveto (env, param, pt1); }
static void curve (ENV &env, PARAM& param, const point_t &pt1, const point_t &pt2, const point_t &pt3)
{ PATH::moveto (env, param, pt3); }
static void hflex (ENV &env, PARAM& param)
{
if (likely (env.argStack.get_count () == 7))
{
point_t pt1 = env.get_pt ();
pt1.move_x (env.eval_arg (0));
point_t pt2 = pt1;
pt2.move (env.eval_arg (1), env.eval_arg (2));
point_t pt3 = pt2;
pt3.move_x (env.eval_arg (3));
point_t pt4 = pt3;
pt4.move_x (env.eval_arg (4));
point_t pt5 = pt4;
pt5.move_x (env.eval_arg (5));
pt5.y = pt1.y;
point_t 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_t pt1 = env.get_pt ();
pt1.move (env.eval_arg (0), env.eval_arg (1));
point_t pt2 = pt1;
pt2.move (env.eval_arg (2), env.eval_arg (3));
point_t pt3 = pt2;
pt3.move (env.eval_arg (4), env.eval_arg (5));
point_t pt4 = pt3;
pt4.move (env.eval_arg (6), env.eval_arg (7));
point_t pt5 = pt4;
pt5.move (env.eval_arg (8), env.eval_arg (9));
point_t 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_t pt1 = env.get_pt ();
pt1.move (env.eval_arg (0), env.eval_arg (1));
point_t pt2 = pt1;
pt2.move (env.eval_arg (2), env.eval_arg (3));
point_t pt3 = pt2;
pt3.move_x (env.eval_arg (4));
point_t pt4 = pt3;
pt4.move_x (env.eval_arg (5));
point_t pt5 = pt4;
pt5.move (env.eval_arg (6), env.eval_arg (7));
point_t 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_t d;
for (unsigned int i = 0; i < 10; i += 2)
d.move (env.eval_arg (i), env.eval_arg (i+1));
point_t pt1 = env.get_pt ();
pt1.move (env.eval_arg (0), env.eval_arg (1));
point_t pt2 = pt1;
pt2.move (env.eval_arg (2), env.eval_arg (3));
point_t pt3 = pt2;
pt3.move (env.eval_arg (4), env.eval_arg (5));
point_t pt4 = pt3;
pt4.move (env.eval_arg (6), env.eval_arg (7));
point_t pt5 = pt4;
pt5.move (env.eval_arg (8), env.eval_arg (9));
point_t 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_t &pt1, const point_t &pt2, const point_t &pt3,
const point_t &pt4, const point_t &pt5, const point_t &pt6)
{
PATH::curve (env, param, pt1, pt2, pt3);
PATH::curve (env, param, pt4, pt5, pt6);
}
};
template <typename ENV, typename OPSET, typename PARAM>
struct cs_interpreter_t : interpreter_t<ENV>
{
HarfBuzz: Update to version 4.3.0
2022-05-23 12:18:11 +02:00
cs_interpreter_t (ENV& env_) : interpreter_t<ENV> (env_) {}
[Complex Text Layouts] Add third-party TextServer dependencies (ICU, HarfBuzz, Graphite).
2020-08-11 11:10:23 +02:00
bool interpret (PARAM& param)
{
SUPER::env.set_endchar (false);
Update HarfBuzz to 7.1.0
2023-02-13 10:44:33 +01:00
unsigned max_ops = HB_CFF_MAX_OPS;
[Complex Text Layouts] Add third-party TextServer dependencies (ICU, HarfBuzz, Graphite).
2020-08-11 11:10:23 +02:00
for (;;) {
HarfBuzz: Update to version 5.0.1
2022-07-24 22:05:03 +02:00
if (unlikely (!--max_ops))
{
SUPER::env.set_error ();
break;
}
[Complex Text Layouts] Add third-party TextServer dependencies (ICU, HarfBuzz, Graphite).
2020-08-11 11:10:23 +02:00
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_t<ENV> SUPER;
};
} /* namespace CFF */
#endif /* HB_CFF_INTERP_CS_COMMON_HH */
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