1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#ifndef VCL_EMBEDDEDFONTSHELPER_HXX
#define VCL_EMBEDDEDFONTSHELPER_HXX
#include <vcl/dllapi.h>
#include <com/sun/star/io/XInputStream.hpp>
#include <com/sun/star/uno/Reference.hxx>
#include <rtl/ustring.hxx>
#include <tools/fontenum.hxx>
#include <vector>
/**
Helper functions for handling embedded fonts in documents.
*/
class VCL_DLLPUBLIC EmbeddedFontsHelper
{
public:
/// Specification of what kind of operation is allowed when embedding a font
enum FontRights
{
ViewingAllowed, ///< Font may be embedded for viewing the document (but not editing)
EditingAllowed ///< Font may be embedded for editing document (implies viewing)
};
/**
Returns URL for a font file for the given font, or empty if it does not exist.
*/
static OUString fontFileUrl( const OUString& familyName, FontFamily family, FontItalic italic,
FontWeight weight, FontPitch pitch, rtl_TextEncoding encoding, FontRights rights );
/**
Reads a font from the input stream, saves it to a temporary font file and activates the font.
@param stream stream of font data
@param fontName name of the font (e.g. 'Times New Roman')
@param extra additional text to use for name (e.g. to distinguish regular from bold, italic,...), "?" for unique
@param key key to xor the data with, from the start until the key's length (not repeated)
*/
static bool addEmbeddedFont( com::sun::star::uno::Reference< com::sun::star::io::XInputStream > stream,
const OUString& fontName, const char* extra,
std::vector< unsigned char > key = std::vector< unsigned char >());
/**
Returns an URL for a file where to store contents of a given temporary font.
The file may or not may not exist yet, and will be cleaned up automatically as appropriate.
Use activateTemporaryFont() to actually enable usage of the font.
@param fontName name of the font (e.g. 'Times New Roman')
@param extra additional text to use for name (e.g. to distinguish regular from bold, italic,...), "?" for unique
*/
static OUString fileUrlForTemporaryFont( const OUString& fontName, const char* extra );
/**
Adds the given font to the list of known fonts. The font is used only until application
exit.
@param fontName name of the font (e.g. 'Times New Roman')
@param fileUrl URL of the font file
*/
static void activateFont( const OUString& fontName, const OUString& fileUrl );
/**
Returns if the restrictions specified in the font (if present) allow embedding
the font for a particular purpose.
@param data font data
@param size size of the font data
@param rights type of operation to be allowed for the font
*/
static bool sufficientFontRights( const void* data, long size, FontRights rights );
/**
Removes all temporary fonts in the path used by fileUrlForTemporaryFont().
@internal
*/
static void clearTemporaryFontFiles();
};
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
