1 /************************************************************************* 2 * 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * Copyright 2000, 2010 Oracle and/or its affiliates. 6 * 7 * OpenOffice.org - a multi-platform office productivity suite 8 * 9 * This file is part of OpenOffice.org. 10 * 11 * OpenOffice.org is free software: you can redistribute it and/or modify 12 * it under the terms of the GNU Lesser General Public License version 3 13 * only, as published by the Free Software Foundation. 14 * 15 * OpenOffice.org is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU Lesser General Public License version 3 for more details 19 * (a copy is included in the LICENSE file that accompanied this code). 20 * 21 * You should have received a copy of the GNU Lesser General Public License 22 * version 3 along with OpenOffice.org. If not, see 23 * <http://www.openoffice.org/license.html> 24 * for a copy of the LGPLv3 License. 25 * 26 ************************************************************************/ 27 28 #ifndef _DIBPREVIEW_HXX_ 29 #define _DIBPREVIEW_HXX_ 30 31 //------------------------------------------------------------------------ 32 // includes 33 //------------------------------------------------------------------------ 34 35 #include "previewbase.hxx" 36 #include <osl/mutex.hxx> 37 38 #if defined _MSC_VER 39 #pragma warning(push, 1) 40 #endif 41 #include <windows.h> 42 #if defined _MSC_VER 43 #pragma warning(pop) 44 #endif 45 46 //--------------------------------------------- 47 // A very simple wrapper for a window that does 48 // display DIBs. 49 // Maybe it would be better and more extensible 50 // to create another class that is responsible 51 // for rendering a specific image format into 52 // the area of the window, but for our purpose 53 // it's enough to go the simple way - KISS. 54 //--------------------------------------------- 55 56 class CDIBPreview : public PreviewBase 57 { 58 public: 59 60 // ctor 61 CDIBPreview(HINSTANCE instance,HWND parent,sal_Bool bShowWindow = sal_False); 62 63 // dtor 64 virtual ~CDIBPreview( ); 65 66 // preview interface implementation 67 68 virtual sal_Int32 SAL_CALL getTargetColorDepth() 69 throw (::com::sun::star::uno::RuntimeException); 70 71 virtual sal_Int32 SAL_CALL getAvailableWidth() 72 throw (::com::sun::star::uno::RuntimeException); 73 74 virtual sal_Int32 SAL_CALL getAvailableHeight() 75 throw (::com::sun::star::uno::RuntimeException); 76 77 virtual void SAL_CALL setImage(sal_Int16 aImageFormat, const ::com::sun::star::uno::Any& aImage) 78 throw (::com::sun::star::lang::IllegalArgumentException, ::com::sun::star::uno::RuntimeException); 79 80 virtual sal_Bool SAL_CALL setShowState(sal_Bool bShowState) 81 throw (::com::sun::star::uno::RuntimeException); 82 83 virtual sal_Bool SAL_CALL getShowState() 84 throw (::com::sun::star::uno::RuntimeException); 85 86 virtual HWND SAL_CALL getWindowHandle() const; 87 88 private: 89 virtual void SAL_CALL onPaint( HWND hWnd, HDC hDC ); 90 91 ATOM SAL_CALL RegisterDibPreviewWindowClass( ); 92 void SAL_CALL UnregisterDibPreviewWindowClass( ); 93 94 static LRESULT CALLBACK WndProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam ); 95 96 private: 97 HINSTANCE m_Instance; 98 HWND m_Hwnd; 99 com::sun::star::uno::Sequence<sal_Int8> m_Image; 100 osl::Mutex m_PaintLock; 101 102 // the preview window class has to be registered only 103 // once per process, so multiple instance of this class 104 // share the registered window class 105 static ATOM s_ClassAtom; 106 static osl::Mutex s_Mutex; 107 static sal_Int32 s_RegisterDibPreviewWndCount; 108 109 // prevent copy and assignment 110 private: 111 CDIBPreview(const CDIBPreview&); 112 CDIBPreview& operator=(const CDIBPreview&); 113 }; 114 115 116 #endif 117