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implement flex ops for glyph extents/subset

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also removed unused CSInterpEnv::move_[xy]_with_arg
fixed bug a width being left over on argStack with CFF1
This commit is contained in:
Michiharu Ariza 2018-10-18 13:04:21 -07:00
parent 1f34388e8b
commit 8679d02b4b
4 changed files with 138 additions and 28 deletions
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157
src/hb-cff-interp-cs-common.hh
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@ -152,24 +152,6 @@ struct CSInterpEnv : InterpEnv<ARG>
inline void moveto (const Point &pt_ ) { pt = pt_; }
inline unsigned int move_x_with_arg (unsigned int i)
{
pt.move_x (SUPER::eval_arg (i));
return i + 1;
}
inline unsigned int move_y_with_arg (unsigned int i)
{
pt.move_y (SUPER::eval_arg (i));
return i + 1;
}
inline unsigned int move_xy_with_arg (unsigned int i)
{
pt.move (SUPER::eval_arg (i), SUPER::eval_arg (i+1));
return i + 2;
}
public:
bool endchar_flag;
bool seen_moveto;
@ -207,6 +189,10 @@ struct PathProcsNull
static inline void moveto (ENV &env, PARAM& param, const Point &pt) {}
static inline void line (ENV &env, PARAM& param, const Point &pt1) {}
static inline void curve (ENV &env, PARAM& param, const Point &pt1, const Point &pt2, const Point &pt3) {}
static inline void hflex (ENV &env, PARAM& param) {}
static inline void flex (ENV &env, PARAM& param) {}
static inline void hflex1 (ENV &env, PARAM& param) {}
static inline void flex1 (ENV &env, PARAM& param) {}
};
template <typename ARG, typename OPSET, typename ENV, typename PARAM, typename PATH=PathProcsNull<ENV, PARAM> >
@ -302,10 +288,23 @@ struct CSOpSet : OpSet<ARG>
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:
OPSET::process_flex (op, env, param);
PATH::flex1 (env, param);
OPSET::process_post_flex (op, env, param);
break;
default:
@ -336,7 +335,7 @@ struct CSOpSet : OpSet<ARG>
}
}
static inline void process_flex (OpCode op, ENV &env, PARAM& param)
static inline void process_post_flex (OpCode op, ENV &env, PARAM& param)
{
OPSET::flush_args_and_op (op, env, param);
}
@ -680,6 +679,124 @@ struct PathProcs
static inline void curve (ENV &env, PARAM& param, const Point &pt1, const Point &pt2, const Point &pt3)
{ PATH::moveto (env, param, pt3); }
static inline 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 inline 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 inline 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 inline 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 inline 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>

1
src/hb-cff1-interp-cs.hh
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@ -214,6 +214,7 @@ struct CFF1CSOpSet : CSOpSet<Number, OPSET, CFF1CSInterpEnv, PARAM, PATH>
{
start_arg = env.check_width ();
SUPER::flush_args (env, param, start_arg);
env.clear_args (); /* pop off width */
}
private:

4
src/hb-subset-cff1.cc
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@ -284,10 +284,6 @@ struct CFF1CSOpSet_Flatten : CFF1CSOpSet<CFF1CSOpSet_Flatten, FlattenParam>
case OpCode_vstemhm:
case OpCode_hintmask:
case OpCode_cntrmask:
case OpCode_hflex:
case OpCode_flex:
case OpCode_hflex1:
case OpCode_flex1:
if (param.drop_hints)
{
env.clear_args ();

4
src/hb-subset-cff2.cc
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@ -92,10 +92,6 @@ struct CFF2CSOpSet_Flatten : CFF2CSOpSet<CFF2CSOpSet_Flatten, FlattenParam>
case OpCode_vstemhm:
case OpCode_hintmask:
case OpCode_cntrmask:
case OpCode_hflex:
case OpCode_flex:
case OpCode_hflex1:
case OpCode_flex1:
if (param.drop_hints)
{
env.clear_args ();