1*ed2f6d3bSAndrew Rist /************************************************************** 2cdf0e10cSrcweir * 3*ed2f6d3bSAndrew Rist * Licensed to the Apache Software Foundation (ASF) under one 4*ed2f6d3bSAndrew Rist * or more contributor license agreements. See the NOTICE file 5*ed2f6d3bSAndrew Rist * distributed with this work for additional information 6*ed2f6d3bSAndrew Rist * regarding copyright ownership. The ASF licenses this file 7*ed2f6d3bSAndrew Rist * to you under the Apache License, Version 2.0 (the 8*ed2f6d3bSAndrew Rist * "License"); you may not use this file except in compliance 9*ed2f6d3bSAndrew Rist * with the License. You may obtain a copy of the License at 10*ed2f6d3bSAndrew Rist * 11*ed2f6d3bSAndrew Rist * http://www.apache.org/licenses/LICENSE-2.0 12*ed2f6d3bSAndrew Rist * 13*ed2f6d3bSAndrew Rist * Unless required by applicable law or agreed to in writing, 14*ed2f6d3bSAndrew Rist * software distributed under the License is distributed on an 15*ed2f6d3bSAndrew Rist * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16*ed2f6d3bSAndrew Rist * KIND, either express or implied. See the License for the 17*ed2f6d3bSAndrew Rist * specific language governing permissions and limitations 18*ed2f6d3bSAndrew Rist * under the License. 19*ed2f6d3bSAndrew Rist * 20*ed2f6d3bSAndrew Rist *************************************************************/ 21*ed2f6d3bSAndrew Rist 22*ed2f6d3bSAndrew Rist 23cdf0e10cSrcweir 24cdf0e10cSrcweir #ifndef THUMBVIEWER_HXX_INCLUDED 25cdf0e10cSrcweir #define THUMBVIEWER_HXX_INCLUDED 26cdf0e10cSrcweir 27cdf0e10cSrcweir #if defined _MSC_VER 28cdf0e10cSrcweir #pragma warning(push, 1) 29cdf0e10cSrcweir #pragma warning(disable:4917) 30cdf0e10cSrcweir #endif 31cdf0e10cSrcweir #include <objidl.h> 32cdf0e10cSrcweir #include <shlobj.h> 33cdf0e10cSrcweir #ifdef __MINGW32__ 34cdf0e10cSrcweir #include <algorithm> 35cdf0e10cSrcweir using std::min; 36cdf0e10cSrcweir using std::max; 37cdf0e10cSrcweir #endif 38cdf0e10cSrcweir #include <gdiplus.h> 39cdf0e10cSrcweir #if defined _MSC_VER 40cdf0e10cSrcweir #pragma warning(pop) 41cdf0e10cSrcweir #endif 42cdf0e10cSrcweir #include <string> 43cdf0e10cSrcweir 44cdf0e10cSrcweir class CThumbviewer : public IPersistFile, public IExtractImage 45cdf0e10cSrcweir { 46cdf0e10cSrcweir public: 47cdf0e10cSrcweir CThumbviewer(long RefCnt = 1); 48cdf0e10cSrcweir virtual ~CThumbviewer(); 49cdf0e10cSrcweir 50cdf0e10cSrcweir //----------------------------- 51cdf0e10cSrcweir // IUnknown methods 52cdf0e10cSrcweir //----------------------------- 53cdf0e10cSrcweir 54cdf0e10cSrcweir virtual HRESULT STDMETHODCALLTYPE QueryInterface( 55cdf0e10cSrcweir REFIID riid, 56cdf0e10cSrcweir void __RPC_FAR *__RPC_FAR *ppvObject); 57cdf0e10cSrcweir 58cdf0e10cSrcweir virtual ULONG STDMETHODCALLTYPE AddRef( void); 59cdf0e10cSrcweir 60cdf0e10cSrcweir virtual ULONG STDMETHODCALLTYPE Release( void); 61cdf0e10cSrcweir 62cdf0e10cSrcweir //---------------------------- 63cdf0e10cSrcweir // IExtractImage methods 64cdf0e10cSrcweir //---------------------------- 65cdf0e10cSrcweir 66cdf0e10cSrcweir virtual HRESULT STDMETHODCALLTYPE Extract(HBITMAP *phBmpImage); 67cdf0e10cSrcweir 68cdf0e10cSrcweir virtual HRESULT STDMETHODCALLTYPE GetLocation( 69cdf0e10cSrcweir LPWSTR pszPathBuffer, 70cdf0e10cSrcweir DWORD cchMax, 71cdf0e10cSrcweir DWORD *pdwPriority, 72cdf0e10cSrcweir const SIZE *prgSize, 73cdf0e10cSrcweir DWORD dwRecClrDepth, 74cdf0e10cSrcweir DWORD *pdwFlags); 75cdf0e10cSrcweir 76cdf0e10cSrcweir //---------------------------- 77cdf0e10cSrcweir // IPersist methods 78cdf0e10cSrcweir //---------------------------- 79cdf0e10cSrcweir 80cdf0e10cSrcweir virtual HRESULT STDMETHODCALLTYPE GetClassID(CLSID* pClassID); 81cdf0e10cSrcweir 82cdf0e10cSrcweir //---------------------------- 83cdf0e10cSrcweir // IPersistFile methods 84cdf0e10cSrcweir //---------------------------- 85cdf0e10cSrcweir 86cdf0e10cSrcweir virtual HRESULT STDMETHODCALLTYPE IsDirty(); 87cdf0e10cSrcweir 88cdf0e10cSrcweir virtual HRESULT STDMETHODCALLTYPE Load( 89cdf0e10cSrcweir /* [in] */ LPCOLESTR pszFileName, 90cdf0e10cSrcweir /* [in] */ DWORD dwMode); 91cdf0e10cSrcweir 92cdf0e10cSrcweir virtual HRESULT STDMETHODCALLTYPE Save( 93cdf0e10cSrcweir /* [unique][in] */ LPCOLESTR pszFileName, 94cdf0e10cSrcweir /* [in] */ BOOL fRemember); 95cdf0e10cSrcweir 96cdf0e10cSrcweir virtual HRESULT STDMETHODCALLTYPE SaveCompleted( 97cdf0e10cSrcweir /* [unique][in] */ LPCOLESTR pszFileName); 98cdf0e10cSrcweir 99cdf0e10cSrcweir virtual HRESULT STDMETHODCALLTYPE GetCurFile( 100cdf0e10cSrcweir /* [out] */ LPOLESTR __RPC_FAR *ppszFileName); 101cdf0e10cSrcweir 102cdf0e10cSrcweir private: 103cdf0e10cSrcweir Gdiplus::Rect CalcScaledAspectRatio(Gdiplus::Rect src, Gdiplus::Rect dest); 104cdf0e10cSrcweir 105cdf0e10cSrcweir private: 106cdf0e10cSrcweir long ref_count_; 107cdf0e10cSrcweir std::wstring filename_; 108cdf0e10cSrcweir SIZE thumbnail_size_; 109cdf0e10cSrcweir DWORD color_depth_; 110cdf0e10cSrcweir ULONG_PTR gdiplus_token_; 111cdf0e10cSrcweir Gdiplus::Bitmap* signet_; 112cdf0e10cSrcweir }; 113cdf0e10cSrcweir 114cdf0e10cSrcweir #endif 115