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/**
* This file has no copyright assigned and is placed in the Public Domain.
* This file is part of the mingw-w64 runtime package.
* No warranty is given; refer to the file DISCLAIMER.PD within this package.
*/
#ifndef _D2D1_EFFECT_HELPERS_H_
#define _D2D1_EFFECT_HELPERS_H_
#include <winapifamily.h>
#if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP)
#include <d2d1effectauthor.h>
template<typename T>
T GetType(T t) {
return t;
};
template<class C, typename P, typename I>
HRESULT DeducingValueSetter(HRESULT (C::*callback)(P), I *effect, const BYTE *data, UINT32 dataSize) {
return dataSize == sizeof(P)
? (static_cast<C*>(effect)->*callback)(*reinterpret_cast<const P*>(data))
: E_INVALIDARG;
}
template<typename T, T P, typename I>
HRESULT CALLBACK ValueSetter(IUnknown *effect, const BYTE *data, UINT32 dataSize) {
return DeducingValueSetter(P, static_cast<I*>(effect), data, dataSize);
}
template<class C, typename P, typename I>
HRESULT DeducingValueGetter(P (C::*callback)() const, const I *effect, BYTE *data, UINT32 dataSize, UINT32 *actualSize) {
if (actualSize)
*actualSize = sizeof(P);
if(!dataSize || !data)
return S_OK;
if (dataSize < sizeof(P))
return E_NOT_SUFFICIENT_BUFFER;
*reinterpret_cast<P*>(data) = (static_cast<const C*>(effect)->*callback)();
return S_OK;
}
template<typename T, T P, typename I>
HRESULT CALLBACK ValueGetter(const IUnknown *effect, BYTE *data, UINT32 dataSize, UINT32 *actualSize) {
return DeducingValueGetter(P, static_cast<const I*>(effect), data, dataSize, actualSize);
}
#define D2D1_VALUE_TYPE_BINDING(name, setter, getter) \
{ \
name, \
&ValueSetter<decltype(GetType(setter)), setter, ID2D1EffectImpl>, \
&ValueGetter<decltype(GetType(getter)), getter, ID2D1EffectImpl> \
}
#endif /* WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP) */
#endif /* _D2D1_EFFECT_HELPERS_H_ */
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