89 lines
3.4 KiB
C++
89 lines
3.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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#ifndef INCLUDED_VCL_EMBEDDEDFONTSHELPER_HXX
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#define INCLUDED_VCL_EMBEDDEDFONTSHELPER_HXX
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#include <vcl/dllapi.h>
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#include <com/sun/star/io/XInputStream.hpp>
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#include <com/sun/star/uno/Reference.hxx>
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#include <rtl/ustring.hxx>
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#include <tools/fontenum.hxx>
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#include <vector>
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/**
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Helper functions for handling embedded fonts in documents.
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*/
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class VCL_DLLPUBLIC EmbeddedFontsHelper
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{
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public:
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/// Specification of what kind of operation is allowed when embedding a font
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enum FontRights
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{
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ViewingAllowed, ///< Font may be embedded for viewing the document (but not editing)
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EditingAllowed ///< Font may be embedded for editing document (implies viewing)
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};
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/**
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Returns URL for a font file for the given font, or empty if it does not exist.
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*/
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static OUString fontFileUrl( const OUString& familyName, FontFamily family, FontItalic italic,
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FontWeight weight, FontPitch pitch, rtl_TextEncoding encoding, FontRights rights );
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/**
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Reads a font from the input stream, saves it to a temporary font file and activates the font.
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@param stream stream of font data
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@param fontName name of the font (e.g. 'Times New Roman')
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@param extra additional text to use for name (e.g. to distinguish regular from bold, italic,...), "?" for unique
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@param key key to xor the data with, from the start until the key's length (not repeated)
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*/
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static bool addEmbeddedFont( com::sun::star::uno::Reference< com::sun::star::io::XInputStream > stream,
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const OUString& fontName, const char* extra,
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std::vector< unsigned char > key = std::vector< unsigned char >());
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/**
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Returns an URL for a file where to store contents of a given temporary font.
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The file may or not may not exist yet, and will be cleaned up automatically as appropriate.
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Use activateTemporaryFont() to actually enable usage of the font.
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@param fontName name of the font (e.g. 'Times New Roman')
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@param extra additional text to use for name (e.g. to distinguish regular from bold, italic,...), "?" for unique
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*/
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static OUString fileUrlForTemporaryFont( const OUString& fontName, const char* extra );
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/**
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Adds the given font to the list of known fonts. The font is used only until application
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exit.
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@param fontName name of the font (e.g. 'Times New Roman')
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@param fileUrl URL of the font file
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*/
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static void activateFont( const OUString& fontName, const OUString& fileUrl );
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/**
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Returns if the restrictions specified in the font (if present) allow embedding
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the font for a particular purpose.
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@param data font data
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@param size size of the font data
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@param rights type of operation to be allowed for the font
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*/
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static bool sufficientFontRights( const void* data, long size, FontRights rights );
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/**
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Removes all temporary fonts in the path used by fileUrlForTemporaryFont().
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@internal
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*/
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static void clearTemporaryFontFiles();
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};
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#endif
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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