1/*
2 * Copyright 2001-2009, Haiku.
3 * Distributed under the terms of the MIT License.
4 *
5 * Authors:
6 * DarkWyrm <bpmagic@columbus.rr.com>
7 * Axel Dörfler, axeld@pinc-software.de
8 */
9#ifndef FONT_MANAGER_H
10#define FONT_MANAGER_H
11
12
13#include <AutoDeleter.h>
14#include <HashMap.h>
15#include <Looper.h>
16#include <ObjectList.h>
17#include <Referenceable.h>
18
19#include <ft2build.h>
20#include FT_FREETYPE_H
21
22class BEntry;
23class BPath;
24struct node_ref;
25
26class FontFamily;
27class FontStyle;
28class ServerFont;
29
30
31/*!
32 \class FontManager FontManager.h
33 \brief Manager for the largest part of the font subsystem
34*/
35class FontManager : public BLooper {
36public:
37 FontManager();
38 virtual ~FontManager();
39
40 status_t InitCheck() { return fInitStatus; }
41 void SaveRecentFontMappings();
42
43 virtual void MessageReceived(BMessage* message);
44
45 int32 CheckRevision(uid_t user);
46 int32 CountFamilies();
47
48 int32 CountStyles(const char* family);
49 int32 CountStyles(uint16 familyID);
50 FontFamily* FamilyAt(int32 index) const;
51
52 FontFamily* GetFamily(uint16 familyID) const;
53 FontFamily* GetFamily(const char* name);
54
55 FontStyle* GetStyleByIndex(const char* family,
56 int32 index);
57 FontStyle* GetStyleByIndex(uint16 familyID, int32 index);
58 FontStyle* GetStyle(const char* family, const char* style,
59 uint16 familyID = 0xffff,
60 uint16 styleID = 0xffff, uint16 face = 0);
61 FontStyle* GetStyle(const char *family, uint16 styleID);
62 FontStyle* GetStyle(uint16 familyID,
63 uint16 styleID) const;
64 FontStyle* FindStyleMatchingFace(uint16 face) const;
65
66 void RemoveStyle(FontStyle* style);
67 // This call must not be used by anything else than class
68 // FontStyle.
69
70 const ServerFont* DefaultPlainFont() const;
71 const ServerFont* DefaultBoldFont() const;
72 const ServerFont* DefaultFixedFont() const;
73
74 void AttachUser(uid_t userID);
75 void DetachUser(uid_t userID);
76
77private:
78 struct font_directory;
79 struct font_mapping;
80
81 void _AddDefaultMapping(const char* family,
82 const char* style, const char* path);
83 bool _LoadRecentFontMappings();
84 status_t _AddMappedFont(const char* family,
85 const char* style = NULL);
86 FontStyle* _GetDefaultStyle(const char* familyName,
87 const char* styleName,
88 const char* fallbackFamily,
89 const char* fallbackStyle,
90 uint16 fallbackFace);
91 status_t _SetDefaultFonts();
92 void _PrecacheFontFile(const ServerFont* font);
93 void _AddSystemPaths();
94 font_directory* _FindDirectory(node_ref& nodeRef);
95 void _RemoveDirectory(font_directory* directory);
96 status_t _CreateDirectories(const char* path);
97 status_t _AddPath(const char* path);
98 status_t _AddPath(BEntry& entry,
99 font_directory** _newDirectory = NULL);
100
101 void _RemoveStyle(font_directory& directory,
102 FontStyle* style);
103 void _RemoveStyle(dev_t device, uint64 directory,
104 uint64 node);
105 FontFamily* _FindFamily(const char* family) const;
106
107 void _ScanFontsIfNecessary();
108 void _ScanFonts();
109 status_t _ScanFontDirectory(font_directory& directory);
110 status_t _AddFont(font_directory& directory,
111 BEntry& entry);
112
113 FT_CharMap _GetSupportedCharmap(const FT_Face& face);
114
115private:
116 struct FontKey {
117 FontKey(uint16 family, uint16 style)
118 : familyID(family), styleID(style) {}
119
120 uint32 GetHashCode() const
121 {
122 return familyID | (styleID << 16UL);
123 }
124
125 bool operator==(const FontKey& other) const
126 {
127 return familyID == other.familyID
128 && styleID == other.styleID;
129 }
130
131 uint16 familyID, styleID;
132 };
133
134private:
135 status_t fInitStatus;
136
137 typedef BObjectList<font_directory> DirectoryList;
138 typedef BObjectList<font_mapping> MappingList;
139 typedef BObjectList<FontFamily> FamilyList;
140
141 DirectoryList fDirectories;
142 MappingList fMappings;
143 FamilyList fFamilies;
144
145 HashMap<FontKey, BReference<FontStyle> > fStyleHashTable;
146
147 ObjectDeleter<ServerFont>
148 fDefaultPlainFont;
149 ObjectDeleter<ServerFont>
150 fDefaultBoldFont;
151 ObjectDeleter<ServerFont>
152 fDefaultFixedFont;
153
154 bool fScanned;
155 int32 fNextID;
156};
157
158extern FT_Library gFreeTypeLibrary;
159extern FontManager* gFontManager;
160
161#endif /* FONT_MANAGER_H */
