shell/inc/internal/thumbviewer.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #ifndef THUMBVIEWER_HXX_INCLUDED
  21 #define THUMBVIEWER_HXX_INCLUDED
  22
  23 #if defined _MSC_VER
  24 #pragma warning(push, 1)
  25 #pragma warning(disable:4917)
  26 #endif
  27 #include <objidl.h>
  28 #include <shlobj.h>
  29 #ifdef __MINGW32__
  30 #include <algorithm>
  31 using std::min;
  32 using std::max;
  33 #endif
  34 #ifndef DONT_HAVE_GDIPLUS
  35 #include <gdiplus.h>
  36 #endif
  37 #if defined _MSC_VER
  38 #pragma warning(pop)
  39 #endif
  40 #include <string>
  41
  42 class CThumbviewer : public IPersistFile, public IExtractImage
  43 {
  44 public:
  45     CThumbviewer(long RefCnt = 1);
  46     virtual ~CThumbviewer();
  47
  48     //-----------------------------
  49     // IUnknown methods
  50     //-----------------------------
  51
  52     virtual HRESULT STDMETHODCALLTYPE QueryInterface(
  53             REFIID riid,
  54             void __RPC_FAR *__RPC_FAR *ppvObject);
  55
  56     virtual ULONG STDMETHODCALLTYPE AddRef( void);
  57
  58     virtual ULONG STDMETHODCALLTYPE Release( void);
  59
  60     //----------------------------
  61     // IExtractImage methods
  62     //----------------------------
  63
  64     virtual HRESULT STDMETHODCALLTYPE Extract(HBITMAP *phBmpImage);
  65
  66     virtual HRESULT STDMETHODCALLTYPE GetLocation(
  67         LPWSTR pszPathBuffer,
  68         DWORD cchMax,
  69         DWORD *pdwPriority,
  70         const SIZE *prgSize,
  71         DWORD dwRecClrDepth,
  72         DWORD *pdwFlags);
  73
  74     //----------------------------
  75     // IPersist methods
  76     //----------------------------
  77
  78     virtual HRESULT STDMETHODCALLTYPE GetClassID(CLSID* pClassID);
  79
  80     //----------------------------
  81     // IPersistFile methods
  82     //----------------------------
  83
  84     virtual HRESULT STDMETHODCALLTYPE IsDirty();
  85
  86     virtual HRESULT STDMETHODCALLTYPE Load(
  87             /* [in] */ LPCOLESTR pszFileName,
  88             /* [in] */ DWORD dwMode);
  89
  90     virtual HRESULT STDMETHODCALLTYPE Save(
  91             /* [unique][in] */ LPCOLESTR pszFileName,
  92             /* [in] */ BOOL fRemember);
  93
  94     virtual HRESULT STDMETHODCALLTYPE SaveCompleted(
  95             /* [unique][in] */ LPCOLESTR pszFileName);
  96
  97     virtual HRESULT STDMETHODCALLTYPE GetCurFile(
  98             /* [out] */ LPOLESTR __RPC_FAR *ppszFileName);
  99
 100 private:
 101     Gdiplus::Rect CalcScaledAspectRatio(Gdiplus::Rect src, Gdiplus::Rect dest);
 102
 103 private:
 104     long         ref_count_;
 105     std::wstring filename_;
 106     SIZE         thumbnail_size_;
 107     DWORD        color_depth_;
 108     ULONG_PTR    gdiplus_token_;
 109     Gdiplus::Bitmap* signet_;
 110 };
 111
 112 #endif
 113
 114 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */