83 lines
3.7 KiB
C#
83 lines
3.7 KiB
C#
// Copyright (c) 2010-2014 SharpDX - Alexandre Mutel
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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using System;
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using System.Diagnostics;
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using System.Runtime.InteropServices;
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namespace SharpDX.DirectWrite
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{
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/// <summary>
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/// Internal FontCollectionLoader Callback
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/// </summary>
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internal class FontCollectionLoaderShadow : SharpDX.ComObjectShadow
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{
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private static readonly FontCollectionLoaderVtbl Vtbl = new FontCollectionLoaderVtbl();
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private Factory _factory;
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public static IntPtr ToIntPtr(FontCollectionLoader loader)
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{
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return ToCallbackPtr<FontCollectionLoader>(loader);
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}
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public static void SetFactory(FontCollectionLoader loader, Factory factory)
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{
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var shadowPtr = ToIntPtr(loader);
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var shadow = ToShadow<FontCollectionLoaderShadow>(shadowPtr);
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shadow._factory = factory;
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}
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private class FontCollectionLoaderVtbl : ComObjectVtbl
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{
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public FontCollectionLoaderVtbl() : base(1)
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{
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AddMethod(new CreateEnumeratorFromKeyDelegate(CreateEnumeratorFromKeyImpl));
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}
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/// <unmanaged>HRESULT IDWriteFontCollectionLoader::CreateEnumeratorFromKey([None] IDWriteFactory* factory,[In, Buffer] const void* collectionKey,[None] int collectionKeySize,[Out] IDWriteFontFileEnumerator** fontFileEnumerator)</unmanaged>
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[UnmanagedFunctionPointer(CallingConvention.StdCall)]
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private delegate int CreateEnumeratorFromKeyDelegate(IntPtr thisPtr, IntPtr factory, IntPtr collectionKey, int collectionKeySize, out IntPtr fontFileEnumerator);
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private static int CreateEnumeratorFromKeyImpl(IntPtr thisPtr, IntPtr factory, IntPtr collectionKey, int collectionKeySize, out IntPtr fontFileEnumerator)
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{
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fontFileEnumerator = IntPtr.Zero;
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try
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{
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var shadow = ToShadow<FontCollectionLoaderShadow>(thisPtr);
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var callback = (FontCollectionLoader)shadow.Callback;
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Debug.Assert(factory == shadow._factory.NativePointer);
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var enumerator = callback.CreateEnumeratorFromKey(shadow._factory, new DataPointer(collectionKey, collectionKeySize));
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fontFileEnumerator = FontFileEnumeratorShadow.ToIntPtr(enumerator);
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}
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catch (Exception exception)
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{
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return (int)SharpDX.Result.GetResultFromException(exception);
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}
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return Result.Ok.Code;
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}
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}
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protected override CppObjectVtbl GetVtbl
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{
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get { return Vtbl; }
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}
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}
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} |