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47a41c0d4d
livetrax/libs/glibmm2/tools/m4/signal.m4
David Robillard 47a41c0d4d Fix building. 
git-svn-id: svn://localhost/ardour2/trunk@2791 d708f5d6-7413-0410-9779-e7cbd77b26cf
2007-12-18 07:20:02 +00:00

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#
# --------------------------- Signal Decl----------------------------
#
dnl _SIGNAL_PROXY($1 = c_signal_name,
dnl $2 = c_return_type,
dnl $3 = `<c_arg_types_and_names>',
dnl $4 = cpp_signal_name,
dnl $5 = cpp_return_type,
dnl $6 = `<cpp_arg_types>',
dnl $7 = `<c_args_to_cpp>',
dnl $8 = `custom_c_callback (boolean)',
dnl $9 = `refdoc_comment',
dnl $10 = ifdef)
define(`_SIGNAL_PROXY',`
$9
ifelse(`$10',,,`#ifdef $10'
)dnl
Glib::SignalProxy`'_NUM($6)< $5`'_COMMA_PREFIX($6) > signal_$4`'();
ifelse(`$10',,,`#endif // $10
')dnl
dnl
_PUSH(SECTION_ANONYMOUS_NAMESPACE)
ifelse(`$10',,,`#ifdef $10'
)dnl
dnl
ifelse($2`'_NUM($3)`'$5`'_NUM($6),`void0void0',`dnl
dnl
dnl Use predefined callback for SignalProxy0<void>, to reduce code size.
static const Glib::SignalProxyInfo __CPPNAME__`'_signal_$4_info =
{
"$1",
(GCallback) &Glib::SignalProxyNormal::slot0_void_callback,
(GCallback) &Glib::SignalProxyNormal::slot0_void_callback
};
',`dnl else
ifelse($8,`1',,`dnl Do not generate the implementation if it should be custom:
static $2 __CPPNAME__`'_signal_$4_callback`'(__CNAME__`'* self, _COMMA_SUFFIX($3)`'void* data)
{
using namespace __NAMESPACE__;
typedef sigc::slot< $5`'_COMMA_PREFIX($6) > SlotType;
// Do not try to call a signal on a disassociated wrapper.
if(Glib::ObjectBase::_get_current_wrapper((GObject*) self))
{
#ifdef GLIBMM_EXCEPTIONS_ENABLED
try
{
#endif //GLIBMM_EXCEPTIONS_ENABLED
if(sigc::slot_base *const slot = Glib::SignalProxyNormal::data_to_slot`'(data))
ifelse(`$2',void,`dnl
(*static_cast<SlotType*>(slot))($7);
',`dnl else
return _CONVERT($5,$2,`(*static_cast<SlotType*>(slot))($7)');
')dnl endif
#ifdef GLIBMM_EXCEPTIONS_ENABLED
}
catch(...)
{
Glib::exception_handlers_invoke();
}
#endif //GLIBMM_EXCEPTIONS_ENABLED
}
ifelse($2,void,,`dnl else
typedef $2 RType;
return RType`'();
')dnl
}
ifelse($2,void,,`dnl else
static $2 __CPPNAME__`'_signal_$4_notify_callback`'(__CNAME__`'* self, _COMMA_SUFFIX($3)`' void* data)
{
using namespace __NAMESPACE__;
typedef sigc::slot< void`'_COMMA_PREFIX($6) > SlotType;
// Do not try to call a signal on a disassociated wrapper.
if(Glib::ObjectBase::_get_current_wrapper((GObject*) self))
{
#ifdef GLIBMM_EXCEPTIONS_ENABLED
try
{
#endif //GLIBMM_EXCEPTIONS_ENABLED
if(sigc::slot_base *const slot = Glib::SignalProxyNormal::data_to_slot`'(data))
(*static_cast<SlotType*>(slot))($7);
#ifdef GLIBMM_EXCEPTIONS_ENABLED
}
catch(...)
{
Glib::exception_handlers_invoke();
}
#endif //GLIBMM_EXCEPTIONS_ENABLED
}
typedef $2 RType;
return RType`'();
}
')dnl endif
')dnl endif
static const Glib::SignalProxyInfo __CPPNAME__`'_signal_$4_info =
{
"$1",
(GCallback) &__CPPNAME__`'_signal_$4_callback,
(GCallback) &__CPPNAME__`'_signal_$4_`'ifelse($2,void,,notify_)`'callback
};
')dnl endif
ifelse(`$10',,,`#endif // $10
')dnl
_SECTION(SECTION_CC_SIGNALPROXIES)
ifelse(`$10',,,`#ifdef $10'
)dnl
Glib::SignalProxy`'_NUM($6)< $5`'_COMMA_PREFIX($6) > __CPPNAME__::signal_$4`'()
{
return Glib::SignalProxy`'_NUM($6)< $5`'_COMMA_PREFIX($6) >(this, &__CPPNAME__`'_signal_$4_info);
}
ifelse(`$10',,,`#endif // $10
')dnl
_POP()')
dnl
dnl _SIGNAL_PH(gname, crettype, cargs and names)
dnl Create a callback and set it in our derived G*Class.
dnl
define(`_SIGNAL_PH',`dnl
_PUSH(SECTION_PCC_CLASS_INIT_DEFAULT_SIGNAL_HANDLERS)
ifelse(`$4',,,`#ifdef $4'
)dnl
klass->$1 = `&'$1_callback;
ifelse(`$4',,,`#endif // $4
')dnl
_SECTION(SECTION_PH_DEFAULT_SIGNAL_HANDLERS)
ifelse(`$4',,,`#ifdef $4'
)dnl
static $2 $1_callback`'($3);
ifelse(`$4',,,`#endif // $4
')dnl
_POP()')
dnl $1 $2 $3 $4
dnl _SIGNAL_PCC(cppname,gname,cpprettype,crettype,
dnl $5 $6 $7 $8 $9
dnl `<cargs and names>',`<cnames>',`<cpparg names>', firstarg, <ifndef>)
dnl
define(`_SIGNAL_PCC',`dnl
_PUSH(SECTION_PCC_DEFAULT_SIGNAL_HANDLERS)
ifelse(`$9',,,`#ifdef $9'
)dnl
$4 __CPPNAME__`'_Class::$2_callback`'($5)
{
dnl First, do a simple cast to ObjectBase. We will have to do a dynamic_cast
dnl eventually, but it is not necessary to check whether we need to call
dnl the vfunc.
Glib::ObjectBase *const obj_base = static_cast<Glib::ObjectBase*>(
Glib::ObjectBase::_get_current_wrapper`'((GObject*)$8));
_IMPORT(SECTION_CHECK)
// Non-gtkmmproc-generated custom classes implicitly call the default
// Glib::ObjectBase constructor, which sets is_derived_. But gtkmmproc-
// generated classes can use this optimisation, which avoids the unnecessary
// parameter conversions if there is no possibility of the virtual function
// being overridden:
if(obj_base && obj_base->is_derived_())
{
dnl We need to do a dynamic cast to get the real object type, to call the
dnl C++ vfunc on it.
CppObjectType *const obj = dynamic_cast<CppObjectType* const>(obj_base);
if(obj) // This can be NULL during destruction.
{
#ifdef GLIBMM_EXCEPTIONS_ENABLED
try // Trap C++ exceptions which would normally be lost because this is a C callback.
{
#endif //GLIBMM_EXCEPTIONS_ENABLED
// Call the virtual member method, which derived classes might override.
ifelse($4,void,`dnl
obj->on_$1`'($7);
return;
',`dnl
return _CONVERT($3,$4,`obj->on_$1`'($7)');
')dnl
#ifdef GLIBMM_EXCEPTIONS_ENABLED
}
catch(...)
{
Glib::exception_handlers_invoke`'();
}
#endif //GLIBMM_EXCEPTIONS_ENABLED
}
}
BaseClassType *const base = static_cast<BaseClassType*>(
ifdef(`__BOOL_IS_INTERFACE__',`dnl
_IFACE_PARENT_FROM_OBJECT($8)dnl
',`dnl
_PARENT_GCLASS_FROM_OBJECT($8)dnl
') );
dnl g_assert(base != 0);
// Call the original underlying C function:
if(base && base->$2)
ifelse($4,void,,`return ')(*base->$2)`'($6);
ifelse($4,void,,`dnl
typedef $4 RType;
return RType`'();
')dnl
}
ifelse(`$9',,,`#endif // $9
')dnl
_POP()')
dnl $1 $2 $3 $4
dnl _SIGNAL_H(signame, rettype, `<cppargs>', <ifdef>)
dnl
define(`_SIGNAL_H',`dnl
_PUSH(SECTION_H_DEFAULT_SIGNAL_HANDLERS)
ifelse(`$4',,,`#ifdef $4'
)dnl
virtual $2 on_$1`'($3);
ifelse(`$4',,,`#endif // $4
')dnl
_POP()')
dnl $1 $2 $3 $4 $5 $6 $7 $8 $9
dnl _SIGNAL_CC(signame,gname,rettype,crettype,`<cppargs>',`<carg_names>', const, refreturn, <ifdef>)
dnl
define(`_SIGNAL_CC',`dnl
_PUSH(SECTION_CC_DEFAULT_SIGNAL_HANDLERS)
ifelse(`$9',,,`#ifdef $9'
)dnl
$3 __NAMESPACE__::__CPPNAME__::on_$1`'($5)
{
BaseClassType *const base = static_cast<BaseClassType*>(
ifdef(`__BOOL_IS_INTERFACE__',`dnl
_IFACE_PARENT_FROM_OBJECT(gobject_)dnl
',`dnl
_PARENT_GCLASS_FROM_OBJECT(gobject_)dnl
') );
dnl g_assert(base != 0);
if(base && base->$2)
ifelse($3,void,`dnl
(*base->$2)`'(gobj`'()`'_COMMA_PREFIX($6));
',`dnl
ifelse($8,refreturn,`dnl Assume Glib::wrap() is correct if refreturn is requested.
return Glib::wrap((*base->$2)`'(ifelse(`$7',1,const_cast<__CNAME__*>(gobj()),gobj())`'_COMMA_PREFIX($6)), true);
',`dnl
return _CONVERT($4,$3,`(*base->$2)`'(ifelse(`$7',1,const_cast<__CNAME__*>(gobj()),gobj())`'_COMMA_PREFIX($6))');
')dnl
typedef $3 RType;
return RType`'();
')dnl
}
ifelse(`$9',,,`#endif // $9
')dnl
_POP()')
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