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