146 lines
4.1 KiB
Plaintext
146 lines
4.1 KiB
Plaintext
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dnl
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dnl _VFUNC_PH(gtkname, crettype, cargs and names)
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dnl Create a callback and set it in our derived G*Class.
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dnl
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define(`_VFUNC_PH',`dnl
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_PUSH(SECTION_PCC_CLASS_INIT_VFUNCS)
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ifelse(`$4',,,`#ifdef $4'
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)dnl
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klass->$1 = `&'$1_vfunc_callback;
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ifelse(`$4',,,`#endif // $4
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')dnl
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_SECTION(SECTION_PH_VFUNCS)
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ifelse(`$4',,,`#ifdef $4'
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)dnl
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static $2 $1_vfunc_callback`'($3);
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ifelse(`$4',,,`#endif // $4
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')dnl
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_POP()')
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dnl $1 $2 $3 $4
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dnl _VFUNC_PCC(cppname,gtkname,cpprettype,crettype,
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dnl $5 $6 $7 $8 $9 $10
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dnl `<cargs and names>',`<cnames>',`<cpparg names>',firstarg, refreturn_ctype, ifdef)
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dnl
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define(`_VFUNC_PCC',`dnl
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_PUSH(SECTION_PCC_VFUNCS)
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ifelse(`$10',,,`#ifdef $10'
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)dnl
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$4 __CPPNAME__`'_Class::$2_vfunc_callback`'($5)
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{
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dnl We cast twice to allow for multiple-inheritance casts, which might
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dnl change the value. We have to use a dynamic_cast because we do not
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dnl know the actual type from which to cast up.
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CppObjectType *const obj = dynamic_cast<CppObjectType*>(
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Glib::ObjectBase::_get_current_wrapper`'((GObject*)$8));
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_IMPORT(SECTION_CHECK)
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// Non-gtkmmproc-generated custom classes implicitly call the default
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// Glib::ObjectBase constructor, which sets is_derived_. But gtkmmproc-
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// generated classes can use this optimisation, which avoids the unnecessary
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// parameter conversions if there is no possibility of the virtual function
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// being overridden:
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if(obj && obj->is_derived_())
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{
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#ifdef GLIBMM_EXCEPTIONS_ENABLED
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try // Trap C++ exceptions which would normally be lost because this is a C callback.
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{
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#endif //GLIBMM_EXCEPTIONS_ENABLED
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// Call the virtual member method, which derived classes might override.
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ifelse($4,void,`dnl
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obj->$1`'($7);
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',`dnl
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ifelse($9,refreturn_ctype,`dnl Assume Glib::unwrap_copy() is correct if refreturn_ctype is requested.
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return Glib::unwrap_copy`'(`obj->$1'($7));
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',`dnl
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return _CONVERT($3,$4,`obj->$1`'($7)');
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')dnl
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')dnl
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#ifdef GLIBMM_EXCEPTIONS_ENABLED
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}
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catch(...)
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{
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Glib::exception_handlers_invoke`'();
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}
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#endif //GLIBMM_EXCEPTIONS_ENABLED
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}
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else
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{
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BaseClassType *const base = static_cast<BaseClassType*>(
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ifdef(`__BOOL_IS_INTERFACE__',`dnl
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_IFACE_PARENT_FROM_OBJECT($8)dnl
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',`dnl
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_PARENT_GCLASS_FROM_OBJECT($8)dnl
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') );
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dnl g_assert(base != 0);
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// Call the original underlying C function:
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if(base && base->$2)
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ifelse($4,void,,`return ')(*base->$2)`'($6);
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}
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ifelse($4,void,,`dnl
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typedef $4 RType;
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return RType`'();
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')dnl
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}
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ifelse(`$10',,,`#endif // $10
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')dnl
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_POP()')
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# $1 $2 $3 $4 $5 $6 $7 $8 $9
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# _VFUNC_CC(vfunc_name, gtkname, cpp_rettype, c_rettype, `<cppargs>', `<carg_names>', is_const, refreturn, $ifdef)
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#
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define(`_VFUNC_CC',`dnl
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_PUSH(SECTION_CC_VFUNCS)
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ifelse(`$9',,,`#ifdef $9'
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)dnl
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$3 __NAMESPACE__::__CPPNAME__::$1`'($5) ifelse($7,1,const,)
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{
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BaseClassType *const base = static_cast<BaseClassType*>(
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ifdef(`__BOOL_IS_INTERFACE__',`dnl
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_IFACE_PARENT_FROM_OBJECT(gobject_)dnl
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',`dnl
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_PARENT_GCLASS_FROM_OBJECT(gobject_)dnl
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') );
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dnl g_assert(base != 0);
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if(base && base->$2)
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ifelse($3,void,`dnl
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(*base->$2)`'(ifelse(`$7',1,const_cast<__CNAME__*>(gobj()),gobj())`'_COMMA_PREFIX($6));
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',`dnl
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ifelse($8,refreturn,`dnl Assume Glib::wrap() is correct if refreturn is requested.
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return Glib::wrap((*base->$2)`'(ifelse(`$7',1,const_cast<__CNAME__*>(gobj()),gobj())`'_COMMA_PREFIX($6)), true);
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',`dnl
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return _CONVERT($4,$3,`(*base->$2)`'(ifelse(`$7',1,const_cast<__CNAME__*>(gobj()),gobj())`'_COMMA_PREFIX($6))');
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')dnl
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typedef $3 RType;
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return RType`'();
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')dnl
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}
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ifelse(`$9',,,`#endif // $9
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')dnl
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_POP()')
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# $1 $2 $3 $4 $5
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# _VFUNC_H(vfunc_name, rettype, `<cppargs>', is_const, ifndef)
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# Only used for custom vfuncs.
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#
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define(`_VFUNC_H',`dnl
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_PUSH(SECTION_H_VFUNCS)
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ifelse(`$5',,,`#ifdef $5'
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)dnl
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ifelse($4,`1',`dnl
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virtual $2 $1`'($3) const;
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',`dnl
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virtual $2 $1`'($3);
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')
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ifelse(`$5',,,`#endif // $5
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')dnl
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_POP()')
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