|
2
|
1 |
/*
|
|
|
2 |
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
|
3 |
*
|
|
|
4 |
* This code is free software; you can redistribute it and/or modify it
|
|
|
5 |
* under the terms of the GNU General Public License version 2 only, as
|
|
5506
|
6 |
* published by the Free Software Foundation. Oracle designates this
|
|
2
|
7 |
* particular file as subject to the "Classpath" exception as provided
|
|
5506
|
8 |
* by Oracle in the LICENSE file that accompanied this code.
|
|
2
|
9 |
*
|
|
|
10 |
* This code is distributed in the hope that it will be useful, but WITHOUT
|
|
|
11 |
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
|
12 |
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
|
13 |
* version 2 for more details (a copy is included in the LICENSE file that
|
|
|
14 |
* accompanied this code).
|
|
|
15 |
*
|
|
|
16 |
* You should have received a copy of the GNU General Public License version
|
|
|
17 |
* 2 along with this work; if not, write to the Free Software Foundation,
|
|
|
18 |
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
|
19 |
*
|
|
5506
|
20 |
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
|
|
21 |
* or visit www.oracle.com if you need additional information or have any
|
|
|
22 |
* questions.
|
|
2
|
23 |
*
|
|
|
24 |
*/
|
|
|
25 |
|
|
|
26 |
/*
|
|
|
27 |
*
|
|
|
28 |
* (C) Copyright IBM Corp. 1998-2004 - All Rights Reserved
|
|
|
29 |
*
|
|
|
30 |
*/
|
|
|
31 |
|
|
|
32 |
#ifndef __CHARSUBSTITUTIONFILTER_H
|
|
|
33 |
#define __CHARSUBSTITUTIONFILTER_H
|
|
|
34 |
|
|
|
35 |
#include "LETypes.h"
|
|
|
36 |
#include "LEGlyphFilter.h"
|
|
|
37 |
|
|
3935
|
38 |
U_NAMESPACE_BEGIN
|
|
|
39 |
|
|
2
|
40 |
class LEFontInstance;
|
|
|
41 |
|
|
|
42 |
/**
|
|
|
43 |
* This filter is used by character-based GSUB processors. It
|
|
|
44 |
* accepts only those characters which the given font can display.
|
|
|
45 |
*
|
|
22330
|
46 |
* Note: Implementation is in ArabicLayoutEngine.cpp
|
|
|
47 |
*
|
|
2
|
48 |
* @internal
|
|
|
49 |
*/
|
|
3935
|
50 |
class CharSubstitutionFilter : public UMemory, public LEGlyphFilter
|
|
2
|
51 |
{
|
|
|
52 |
private:
|
|
|
53 |
/**
|
|
|
54 |
* Holds the font which is used to test the characters.
|
|
|
55 |
*
|
|
|
56 |
* @internal
|
|
|
57 |
*/
|
|
|
58 |
const LEFontInstance *fFontInstance;
|
|
|
59 |
|
|
|
60 |
/**
|
|
|
61 |
* The copy constructor. Not allowed!
|
|
|
62 |
*
|
|
|
63 |
* @internal
|
|
|
64 |
*/
|
|
|
65 |
CharSubstitutionFilter(const CharSubstitutionFilter &other); // forbid copying of this class
|
|
|
66 |
|
|
|
67 |
/**
|
|
|
68 |
* The replacement operator. Not allowed!
|
|
|
69 |
*
|
|
|
70 |
* @internal
|
|
|
71 |
*/
|
|
|
72 |
CharSubstitutionFilter &operator=(const CharSubstitutionFilter &other); // forbid copying of this class
|
|
|
73 |
|
|
|
74 |
public:
|
|
|
75 |
/**
|
|
|
76 |
* The constructor.
|
|
|
77 |
*
|
|
|
78 |
* @param fontInstance - the font to use to test the characters.
|
|
|
79 |
*
|
|
|
80 |
* @internal
|
|
|
81 |
*/
|
|
|
82 |
CharSubstitutionFilter(const LEFontInstance *fontInstance);
|
|
|
83 |
|
|
|
84 |
/**
|
|
|
85 |
* The destructor.
|
|
|
86 |
*
|
|
|
87 |
* @internal
|
|
|
88 |
*/
|
|
|
89 |
~CharSubstitutionFilter();
|
|
|
90 |
|
|
|
91 |
/**
|
|
|
92 |
* This method is used to test if a particular
|
|
|
93 |
* character can be displayed by the filter's
|
|
|
94 |
* font.
|
|
|
95 |
*
|
|
|
96 |
* @param glyph - the Unicode character code to be tested
|
|
|
97 |
*
|
|
|
98 |
* @return TRUE if the filter's font can display this character.
|
|
|
99 |
*
|
|
|
100 |
* @internal
|
|
|
101 |
*/
|
|
22330
|
102 |
le_bool accept(LEGlyphID glyph, LEErrorCode &success) const;
|
|
2
|
103 |
};
|
|
|
104 |
|
|
3935
|
105 |
U_NAMESPACE_END
|
|
2
|
106 |
#endif
|