| 1 | /**
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| 2 | * This file has no copyright assigned and is placed in the Public Domain.
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| 3 | * This file is part of the mingw-w64 runtime package.
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| 4 | * No warranty is given; refer to the file DISCLAIMER.PD within this package.
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| 5 | */
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| 6 |
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| 7 | #ifndef _D2D1_EFFECT_HELPERS_H_
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| 8 | #define _D2D1_EFFECT_HELPERS_H_
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| 9 |
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| 10 | #include <winapifamily.h>
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| 11 |
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| 12 | #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP)
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| 13 |
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| 14 | #include <d2d1effectauthor.h>
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| 15 |
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| 16 | template<typename T>
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| 17 | T GetType(T t) {
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| 18 | return t;
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| 19 | };
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| 20 |
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| 21 | template<class C, typename P, typename I>
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| 22 | HRESULT DeducingValueSetter(HRESULT (C::*callback)(P), I *effect, const BYTE *data, UINT32 dataSize) {
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| 23 | return dataSize == sizeof(P)
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| 24 | ? (static_cast<C*>(effect)->*callback)(*reinterpret_cast<const P*>(data))
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| 25 | : E_INVALIDARG;
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| 26 | }
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| 27 |
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| 28 | template<typename T, T P, typename I>
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| 29 | HRESULT CALLBACK ValueSetter(IUnknown *effect, const BYTE *data, UINT32 dataSize) {
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| 30 | return DeducingValueSetter(P, static_cast<I*>(effect), data, dataSize);
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| 31 | }
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| 32 |
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| 33 | template<class C, typename P, typename I>
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| 34 | HRESULT DeducingValueGetter(P (C::*callback)() const, const I *effect, BYTE *data, UINT32 dataSize, UINT32 *actualSize) {
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| 35 | if (actualSize)
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| 36 | *actualSize = sizeof(P);
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| 37 |
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| 38 | if(!dataSize || !data)
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| 39 | return S_OK;
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| 40 |
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| 41 | if (dataSize < sizeof(P))
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| 42 | return E_NOT_SUFFICIENT_BUFFER;
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| 43 |
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| 44 | *reinterpret_cast<P*>(data) = (static_cast<const C*>(effect)->*callback)();
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| 45 | return S_OK;
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| 46 | }
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| 47 |
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| 48 | template<typename T, T P, typename I>
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| 49 | HRESULT CALLBACK ValueGetter(const IUnknown *effect, BYTE *data, UINT32 dataSize, UINT32 *actualSize) {
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| 50 | return DeducingValueGetter(P, static_cast<const I*>(effect), data, dataSize, actualSize);
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| 51 | }
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| 52 |
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| 53 | #define D2D1_VALUE_TYPE_BINDING(name, setter, getter) \
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| 54 | { \
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| 55 | name, \
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| 56 | &ValueSetter<decltype(GetType(setter)), setter, ID2D1EffectImpl>, \
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| 57 | &ValueGetter<decltype(GetType(getter)), getter, ID2D1EffectImpl> \
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| 58 | }
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| 59 |
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| 60 | #endif /* WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP) */
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| 61 |
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| 62 | #endif /* _D2D1_EFFECT_HELPERS_H_ */
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