WO2015000259A1 - 构建超大字库的方法及装置、字符显示方法及装置 - Google Patents

构建超大字库的方法及装置、字符显示方法及装置 Download PDF

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Publication number
WO2015000259A1
WO2015000259A1 PCT/CN2013/088623 CN2013088623W WO2015000259A1 WO 2015000259 A1 WO2015000259 A1 WO 2015000259A1 CN 2013088623 W CN2013088623 W CN 2013088623W WO 2015000259 A1 WO2015000259 A1 WO 2015000259A1
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Prior art keywords
font
character
library
engine
outline data
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PCT/CN2013/088623
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English (en)
French (fr)
Inventor
夏立宁
唐英敏
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北大方正集团有限公司
方正信息产业控股有限公司
北京北大方正电子有限公司
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Priority to JP2016522188A priority Critical patent/JP2016533568A/ja
Priority to KR1020167001827A priority patent/KR101780905B1/ko
Priority to US14/902,957 priority patent/US10192336B2/en
Publication of WO2015000259A1 publication Critical patent/WO2015000259A1/zh

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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T11/002D [Two Dimensional] image generation
    • G06T11/60Editing figures and text; Combining figures or text
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/20Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
    • G06F16/22Indexing; Data structures therefor; Storage structures
    • G06F16/2228Indexing structures
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/20Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
    • G06F16/21Design, administration or maintenance of databases
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F40/00Handling natural language data
    • G06F40/10Text processing
    • G06F40/103Formatting, i.e. changing of presentation of documents
    • G06F40/109Font handling; Temporal or kinetic typography
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F40/00Handling natural language data
    • G06F40/10Text processing
    • G06F40/12Use of codes for handling textual entities
    • G06F40/126Character encoding
    • G06F40/129Handling non-Latin characters, e.g. kana-to-kanji conversion
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00Arrangements for program control, e.g. control units
    • G06F9/06Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/44Arrangements for executing specific programs
    • G06F9/451Execution arrangements for user interfaces
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T1/00General purpose image data processing
    • G06T1/60Memory management

Definitions

  • the invention belongs to the technical field of computer text input, and particularly relates to a method for constructing a super large font library and a character display method. Background technique
  • the number of characters is often less, generally more than 6,000, so there will be no problem in a font file, even if it is a GBK or 18030 encoded font, the number of characters will be Two or three thousand or so, using a font file to load and display is no problem. However, sometimes the number of characters you need to use may be more than these. These characters may be used in some special fields. In this case, the number of characters that need to be stored in the font may exceed 60,000. Due to the limitation of the data structure of the font format itself, it is impossible to store so many characters in one font. Even if it is stored, it may encounter problems when it is displayed. This has to divide the characters into two parts and put them into two or more font files.
  • font linking Although Microsoft provides a method called "font linking", this method can link two fonts together, for example: font A and font B, which store a part of the characters respectively, when we select the font, the font A is selected. At this point, if we enter the characters in font B, we can still display them through the mechanism of font linking.
  • this method is simple and easy, it has many unsatisfactory places, especially in the display of non-zero plane characters (zero-plane characters are characters Unicode encoding in the range of OxOOOO-OxFFFF.
  • 0x10000 - OxlFFFF is a 1-plane character
  • 0x20000 - 0x2FFFF is a 2-plane character, and so on, sometimes it cannot be called and displayed.
  • the number of coded words increases, the number of link libraries needs to increase, and the efficiency of character retrieval and display becomes more and more prominent.
  • One aspect of the present invention provides a method and apparatus for constructing a super large font library to solve the problem of the limitation of the data structure in the font format in the prior art, so that the number of characters accommodated in the font library is limited.
  • Another aspect of the present invention provides a character display method and apparatus for easily and conveniently identifying characters in a non-standard format super large font library, thereby improving character retrieval efficiency.
  • the present invention provides the following technical solutions:
  • a method of building a super large font library includes:
  • a font engine middleware for interpreting the oversized font library is created.
  • the boot font contains only basic ASCII symbols.
  • the non-standard format large font library encodes 4 bytes.
  • the non-standard format super large font library comprises: a code table for storing a character encoding and an index comparison relationship, a position information table for storing an index and a character data offset relationship, and a character contour data for storing character contour data. Glyph table.
  • the font engine middleware intercepts a font invocation message sent by the system font engine, where the font invocation message includes a character encoding and a font name corresponding to the character that the application needs to display;
  • the super large font library is a non-standard format font library;
  • the outline data of the character is returned to the system font engine such that the system font engine displays the character based on the character outline data.
  • the font engine middleware ⁇ the font invocation message sent by the system font engine comprises: the font engine middleware intercepting the font invocation message by using a hook function, and obtaining the character encoding and the font name.
  • the obtaining, according to the character encoding and the font name, the contour data corresponding to the character from the large font library comprises:
  • the outline data of the character is obtained from the character outline data table based on the index value.
  • a device for building a super large font library includes:
  • a boot font building unit for constructing a boot font
  • a large font building unit for building a large font library in a non-standard format; a middleware building unit for establishing a font engine middleware for interpreting the large font library.
  • a character display device includes:
  • An intercepting unit configured to intercept a font calling message sent by the system font engine, where the font calling message includes a character encoding and a font name corresponding to characters that the application needs to display;
  • An outline data obtaining unit configured to obtain, according to the character encoding and the font name, contour data corresponding to the character from a large font library, where the large font library is a font library in a non-standard format;
  • a transmitting unit configured to return contour data of the character to the system font engine, so that the system font engine displays the character according to the character contour data.
  • the intercepting unit is specifically configured to intercept the font invocation message by using a hook function, and obtain the character encoding and the font name.
  • the contour data acquiring unit includes:
  • a font file search subunit configured to search for a font file from the large font library according to the font name
  • An index value finding subunit configured to obtain an index value corresponding to the character encoding from the found font file according to the character encoding
  • the obtaining subunit is configured to obtain the contour data of the character from the character outline data table according to the index value.
  • the method and apparatus for constructing a super large font library provided by the embodiments of the present invention adopt a super large font library of a non-standard format, so that it can accommodate more characters.
  • the corresponding font engine middleware and boot font library are constructed.
  • the character display method and apparatus provided by the embodiment of the present invention assists the system font engine in explaining the large font library by the font engine middleware, and extracts the character related information to be displayed from the super large font library. It is organized according to the information format required by the system font engine, and then passed back to the system font engine, which is finally displayed by the system font engine to the user interface. Therefore, the problem that the prior art is inefficient by the link calling method and cannot call each other in different fonts is solved.
  • FIG. 1 is a flow chart of a method for constructing a super large font library according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of an apparatus for constructing a super large font library according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of a character display device according to an embodiment of the present invention. detailed description
  • the TrueType fonts commonly used in the operating system cannot directly construct the available large fonts with more than 65535 characters.
  • the data structure in the font format determines that it cannot accommodate more than 65535 characters, even if more characters are stored in the font. Called by the operating system's font engine, it can even be considered an invalid font. Therefore, most of the current solutions to this problem use the method of font linking, by linking two or more fonts to achieve more characters. However, this method still has its imperfections. For example: In the current operating system, a font containing the CJK-ExtB character in the ISO/IEC 10646 coded character set can be entered and displayed with the CJK-Ext A area after the font link.
  • an embodiment of the present invention provides a method and apparatus for constructing a large font library. Based on the existing font format and display mode, a TrueType-based font library capable of accommodating more characters is established, and the current operating system is not Support for this non-standard format, build font engine middleware and lead Guide library.
  • the embodiment of the invention further provides a character display method and device, which assists the system font engine in interpreting the non-standard format super large font library by the font engine middleware, and displays the character related information to be displayed. It is extracted from the large font library and organized according to the information format required by the system font engine, and then passed back to the system font engine, which is finally displayed by the system font engine to the user interface.
  • the process of the method for constructing a super large font in the embodiment of the present invention includes the following steps: Step 101: Construct a boot font.
  • the boot font can be a standard format font, but it only contains basic ASCII symbols and does not contain true Chinese characters.
  • Step 102 Construct a large font library in a non-standard format.
  • the standard font organization format cannot be accommodated because of the large number of characters, so it is stored in a non-standard font format. That is to say, the large font library is a font library in a non-standard format.
  • some modifications can be made on the existing standard format, for example: The number of encoded bytes is changed from 2 bytes to 4 bytes, so that only up to OxFFFF characters can be stored, and now OxFFFFFF characters can be stored. , to meet the needs of the large font library.
  • Each font vendor or individual can organize the characters that need to be added to the font into a font as needed. Due to the number of characters, it may not be organized in accordance with the standard format of the font, and will be interpreted by a dedicated font engine during interpretation.
  • the large font library of the non-standard format mainly includes: a code table for storing a character encoding and an index comparison relationship, a position information table for storing an index and a character data offset relationship, a glyph table for storing character contour data, and the like.
  • a code table for storing a character encoding and an index comparison relationship
  • a position information table for storing an index and a character data offset relationship
  • a glyph table for storing character contour data
  • Step 103 Create a font engine middleware for interpreting the large font library.
  • the font engine middleware is established, so that the system font engine assists the system font engine in explaining the oversized by calling the font engine middleware.
  • the font and extract the character related information that needs to be displayed from the large font library, and then according to the system font
  • the information format required by the engine is organized and passed to the system font engine, which is ultimately displayed by the system font engine to the user interface.
  • the large font library described in the embodiments of the present invention is particularly suitable for companies and individuals who need to store more than 60,000 characters in a font library.
  • an embodiment of the present invention further provides an apparatus for constructing a super large font, and Fig. 2 shows a schematic structural view of the apparatus.
  • the set 200 includes: a boot font construction unit 201, a super large font construction unit 202, and a middleware construction unit 203. among them:
  • the boot font building unit 201 is configured to construct a boot font library
  • the super large font building unit 202 is configured to construct a super large font library in a non-standard format
  • the middleware building unit 203 is for creating a font engine middleware for interpreting the large font library.
  • the embodiment of the present invention further provides a character display method.
  • the character display in the prior art the following briefly describes the description of the character display in the prior art.
  • the process of displaying characters in a font in the prior art includes the following steps:
  • Step 301 When the application needs to display a certain character, the character code corresponding to the character and the font name are transmitted to the system font engine.
  • Step 302 The system font engine searches for the font file according to the font name.
  • Step 303 The system font engine searches for the character in the found font file according to the character encoding.
  • Step 304 If the character is found in the font file, the contour data of the character is obtained according to the corresponding index value to the character outline data table.
  • Step 305 The system font engine displays the character according to the acquired contour data.
  • the current operating system does not support The character display method of the non-standard format of the present invention
  • the character display method provided by the embodiment of the present invention is used by the system font to introduce the font engine middleware, and the retrieval of the characters in the large font library is realized simply and conveniently, and the character display is greatly improved. effectiveness.
  • Step 401 The font engine middleware ⁇ system font engine sends a font call message to the boot font, and the font call message includes the The character encoding and font name corresponding to the characters that the application needs to display.
  • the font engine middleware can utilize the hook function of WINDOWS to intercept the font call message and obtain the character code and font name.
  • the hook function can be used to intercept messages in windows, as well as intercept calls to functions, including application calls to functions and system calls to functions.
  • Step 402 The font engine middleware acquires contour data corresponding to the character from a large font library of a non-standard format according to the character encoding and the font name.
  • the super large font library can accommodate more character encoding information and contour data information.
  • a one-to-one correspondence can be established between the boot font and the super large font, and the correspondence is introduced into the font engine middleware.
  • the font engine middleware knows that the system font engine wants to call the boot font, According to the correspondence, the reading of the boot font by the system font engine can be turned to the reading of the large font library.
  • the process of getting the outline data from the font library by the font engine middleware is similar to the i1 ⁇ 2 of the existing system font engine for obtaining the outline data from the boot font.
  • the font file to be read is determined according to the intercepted font name, and then according to the intercepted characters.
  • Encoding, and a CMAP table (character encoding and index comparison table) in the font file to obtain an index corresponding to the character encoding, and then searching the LOCA table according to the index to find a partiality of the character corresponding to the index in the GLYF table.
  • the glyph contour data can be read directly in the GLYF table, and the glyph contour data of all characters is stored in the GLYF table.
  • Step 403 returning contour data of the character to the system font engine to make the system
  • the font engine displays the character based on the character outline data.
  • the character display method of the embodiment of the present invention uses the font engine middleware to intercept the font invocation message sent by the system font engine to the boot font, thereby converting the reading of the boot font by the system font engine into the reading of the super large font by the font engine middleware. After the reading is completed, the obtained glyph contour data is returned to the system font engine, thereby simply and conveniently realizing the retrieval and display of characters in the super large font library, and greatly improving the character display efficiency. And at the application level, it feels that the system font engine itself does not affect the user experience.
  • an embodiment of the present invention further provides a character display device, and FIG. 5 shows a schematic structural view of the device.
  • the apparatus includes:
  • the intercepting unit 501 is configured to: ⁇ a font invoking message sent by the system font engine, where the font invoking message includes a character encoding and a font name corresponding to the character that the application needs to display;
  • the contour data obtaining unit 502 is configured to obtain contour data of the character from the large font library according to the character encoding and the font name, and the large font library is a font library in a non-standard format;
  • the transmitting unit 503 is configured to return the outline data of the character to the system font engine, so that the system font engine displays the character according to the character outline data.
  • the large font library can accommodate more character encoding information and contour data information, and the specific content is similar to the standard format font library, and has been described in detail above, and will not be described here. .
  • the intercepting unit 501 can utilize a hook function to intercept a font invocation message and obtain the character encoding and font name.
  • the outline data obtaining unit 502 includes: a font file lookup subunit, an index value lookup subunit, and an acquisition subunit (not shown). among them:
  • the font file search subunit is configured to search for a font file from the large font library according to the font name;
  • the index value searching subunit is configured to obtain an index value corresponding to the character encoding from the found font file according to the character encoding; contour data.
  • the character display device of the embodiment of the present invention invokes a message by a font sent by the system font engine to the boot font, thereby converting the reading of the boot font by the system font engine into reading of the super large font by the font engine middleware, and reading After completion, the obtained glyph contour data is returned to the system font engine, thereby simply and conveniently realizing the retrieval and display of characters in the super large font library, and greatly improving the character display efficiency.
  • the sensation is also the system font engine itself, which does not affect the user body.
  • the character display method and apparatus of the embodiment of the present invention can be applied to various applications to satisfy the application. A variety of requirements for character display, and high efficiency and speed.
  • the computer is also provided with one or more computer-readable instructions having computer-executable instructions that, when executed by a computer, perform the steps of the method of constructing a super-large font or the method of displaying characters.
  • a computer comprising one or more computer readable media having computer executable instructions for performing the method of constructing a super large font or the character display method as described above when executed by a computer.
  • Exemplary operating environment
  • a computer or computing device such as described herein, has hardware, including one or more processors or processing units, system memory, and some form of computer-readable media.
  • computer-readable media includes computer storage media and communication media.
  • Computer storage includes any method for storing information such as computer readable instructions, data structures, program modules or other data or The volatility and non-volatility of technology implementations are both mobile and non-removable.
  • Communication media typically embody computer readable instructions, data structures, program modules or other data in a modulated data signal, such as a carrier wave or other transmission mechanism, and includes any information delivery medium. Combinations of any of the above are also included within the scope of computer readable.
  • the computer can be used to one or more remote computers, such as logical connections of remote computers operating in a networked environment.
  • remote computers such as logical connections of remote computers operating in a networked environment.
  • the computing system environment is not intended to suggest any limitation as to the scope of use or functionality of any aspect of the invention.
  • the computer environment should not be interpreted as having any dependency or requirement relating to any one or combination of components illustrated in the exemplary operating environment.
  • Examples of well-known computing systems, environments, and/or configurations suitable for use in aspects of the present invention include, but are not limited to: personal computers, server computers, handheld or laptop devices, multiprocessor systems, microprocessor based System, set-top box, programmable consumer electronics, mobile phone, network PC, small computer, mainframe computer, distributed computing environment including any of the above systems or devices, and the like.
  • Computer executable instructions can be organized as software into one or more computer executable components or modules.
  • program modules include, but are not limited to, routines, programs, objects, components, and data structures that perform particular tasks or implement particular abstract data types. Any number of such components or modules and their organization may be utilized to implement aspects of the present invention.
  • aspects of the invention are not limited to the specific computer-executable instructions or specific components or modules illustrated in the drawings and described herein.
  • Other embodiments of the invention may be packaged or assembled.
  • aspects of the invention may also be implemented in a distributed computing environment where tasks are set up by remote processing linked through a communications network.
  • program modules can be located in and including memory storage.
  • the method and apparatus of the present invention may be implemented in a number of ways.
  • the methods and apparatus of the present invention can be implemented in software, hardware, firmware, or any combination of software, hardware, or firmware.
  • the above-described sequence of steps for the method is for illustrative purposes only, and the steps of the method of the present invention are not limited to the above described order unless otherwise specifically stated.
  • this can also be
  • the invention is embodied as programs recorded in a recording medium, the programs comprising machine readable instructions for implementing the method according to the invention.
  • the present invention also stores a recording medium for executing a program according to the method of the present invention.

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Abstract

本发明属于计算机文字输入技术领域,公开了一种构建超大字库的方法置、以及一种字符显示方法及装置。所述字符显示方法包括:字体引擎中间件拦截系统字体引擎发送的字体调用消息,所述字体调用消息中包含所述应用程序需要显示的字符对应的字符编码及字体名称;根据所述字符编码及字体名称从超大字库中获取对应所述字符的轮廓数据,所述超大字库为非标准格式的字库;将所述字符的轮廓数据返回给所述系统字体引擎,以使所述系统字体引擎根据所述字符轮廓数据显示所述字符。利用本发明,不仅提高了字库的容量,而且能够简单方便地识别非标准格式超大字库中的字符,提高字符检索及显示效率。

Description

构建超大字库的方法及装置、 字符显示方法及装置 技术领域
本发明属于计算机文字输入技术领域, 具体涉及一种构建超大字库的方 法 置、 以及一种字符显示方法 置。 背景技术
在我们通常使用的字库中, 字符的个数往往比较少, 一般在 6千多个, 所以放到一个字库文件中不会有任何问题, 即使是 GBK或 18030编码的字 库, 字符数也就在两三万左右, 用一个字库文件来装载和显示都是没有问题 的。 但有的时候需要使用的字符数可能不止这些, 这些字符可能会用于一些 特殊领域, 这时候需要存放到字库中的字符数可能会超过 6万多。 由于字库 格式本身数据结构的限制, 在一个字库中无法存入这么多的字符, 即使存入 了,可能在显示的时候也会遇到问题。这样就不得不把这些字符分成两部分, 分别放到两个甚至更多个字库文件中。 虽然微软提供了一种叫做"字体链接" 的方法, 此方法可以将两个字库链接到一起, 例如: 字库 A和字库 B, 它们 分别存放了一部分字符, 当我们选择字体的时候选中了字库 A, 此时如果我 们输入字库 B中的字符时,仍然能够通过字体链接的机制使其显示出来。 这 种方式虽然简单易行, 但其有许多不尽人意的地方, 尤其是在显示非零平面 的字符(零平面的字符就是字符 Unicode编码在 OxOOOO-OxFFFF的范围内。
0x10000 - OxlFFFF为 1平面的字符, 0x20000 - 0x2FFFF为 2平面的字符, 以此类推)时, 有时候无法调用和显示。 而且, 随着编码字数的增加, 需链 接字库的数量越来越多, 字符检索及显示的效率问题将越来越突出。 发明内容
本发明一方面提供一种构建超大字库的方法及装置, 以解决现有技术中由 于字库格式中数据结构的限制, 使得字库中容纳字符数量受限的问题。
本发明另一方面提供一种字符显示方法及装置, 以简单方便地识别非标准 格式超大字库中的字符, 提高字符检索 示效率。 为此, 本发明提供如下技术方案:
一种构建超大字库的方法包括:
构建引导字库;
构建非标准格式的超大字库;
建立用于解释所述超大字库的字体引擎中间件。
优选地, 所述引导字库只包含基本的 ASCII符号。
优选地, 所述非标准格式的超大字库编码的字节数为 4 字节。
优选地, 所述非标准格式的超大字库包括: 用于存储字符编码和索引对照 关系的码表、 用于存储索引和字符数据偏移量对照关系的位置信息表、 用于存 储字符轮廓数据的字形表。
一种字符显示方法包括:
字体引擎中间件拦截系统字体引擎发送的字体调用消息, 所述字体调用消 息中包含所述应用程序需要显示的字符对应的字符编码及字体名称; 据, 所述超大字库为非标准格式的字库;
将所述字符的轮廓数据返回给所述系统字体引擎, 以使所述系统字体引擎 根据所述字符轮廓数据显示所述字符。
优选地,所述字体引擎中间件^ «系统字体引擎发送的字体调用消息包括: 所述字体引擎中间件利用钩子函数来拦截字体调用消息, 并获得所述字符 编码及字体名称。
优选地, 所述根据所述字符编码及字体名称从超大字库中获取对应所述字 符的轮廓数据包括:
根据所述字体名称从所述超大字库中查找字体文件;
根据所述字符编码从查找到的字体文件中获取所述字符编码对应的索引 值;
根据所述索引值从字符轮廓数据表中获取所述字符的轮廓数据。
一种构建超大字库的装置包括:
引导字库构建单元, 用于构建引导字库;
超大字库构建单元, 用于构建非标准格式的超大字库; 中间件构建单元, 用于建立用于解释所述超大字库的字体引擎中间件。 一种字符显示装置包括:
拦截单元, 用于拦截系统字体引擎发送的字体调用消息, 所述字体调用消 息中包含应用程序需要显示的字符对应的字符编码及字体名称;
轮廓数据获取单元, 用于根据所述字符编码及字体名称从超大字库中获取 对应所述字符的轮廓数据, 所述超大字库为非标准格式的字库;
传送单元, 用于将所述字符的轮廓数据返回给所述系统字体引擎, 以使所 述系统字体引擎根据所述字符轮廓数据显示所述字符。
优选地, 所述拦截单元具体用于利用钩子函数来拦截字体调用消息, 并获 得所述字符编码及字体名称。
优选地, 所述轮廓数据获取单元包括:
字体文件查找子单元, 用于根据所述字体名称从所述超大字库中查找字体 文件;
索引值查找子单元, 用于根据所述字符编码从查找到的字体文件中获取所 述字符编码对应的索引值;
获取子单元, 用于根据所述索引值从字符轮廓数据表中获取所述字符的轮 廓数据。
本发明实施例提供的构建超大字库的方法及装置, 采用非标准格式的超大 字库, 从而使其可以容纳更多的字符。 同时, 为了使系统字体引擎能够识别所 ^大字库中的字符, 构建相应的字体引擎中间件和引导字库。
基于上述的引导字库及字体引擎中间件, 本发明实施例提供的字符显示方 法及装置由字体引擎中间件协助系统字体引擎解释超大字库, 并将所需显示 的字符相关信息从超大字库中提取出来并按照系统字体引擎所需的信息格 式整理好, 然后回传给系统字体引擎, 最终由系统字体引擎将其显示到用户 界面上。 从而解决了现有技术通过链接调用方式效率低、 不能互相调用不同 字库中字符的问题。
利用本发明, 不仅提高了字库的容量, 而且能够简单方便地识别非标准 格式超大字库中的字符, 提高字符检索 示效率。 附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案, 下面将对实施 例中所需 吏用的附图作简单地介绍, 显而易见地, 下面描述中的附图仅仅是 本发明中记载的一些实施例, 对于本领域普通技术人员来讲, 还可以根据这些 附图获得其他的附图。
图 1是本发明实施例构建超大字库的方法的流程图;
图 2是本发明实施例构建超大字库的装置的结构示意图;
图 3是现有技术中显示字库中字符的流程图;
图 4是本发明实施例字符显示方法的流程图;
图 5是本发明实施例字符显示装置的结构示意图。 具体实施方式
为了使 ^术领域的人员更好地理解本发明实施例的方案, 下面结合附图 和实施方式对本发明实施例作进一步的详细说明。
目前操作系统中常用的 TrueType字库无法直接构建可用的超过 65535个字 符的超大字库, 字库格式中的数据结构决定了其无法容纳超过 65535个字符, 即使在字库中存放了更多的字符, 也无法通过操作系统的字体引擎来调用, 甚 至会被认为是无效的字库。 所以, 目前解决此问题的方法大多是采用字体链接 的方式, 通过将两个或两个以上的字库链接起来以实现显示更多字符的目的。 但是此方法仍然有其不完善的地方, 例如: 目前的操作系统中, 含有 ISO/IEC 10646编码字符集中 CJK-ExtB区字符的字库,通过字体链接以后可以录入并显 示含有 CJK-Ext A 区的字库的字符, 反过来却不行; 或者同时含有 ISO/IEC 10646编码字符集基本平面和二平面的两个字库通过字体链接后无法互相调用 对方二平面的字符,等等。 随着编码字数的增加, ISO/IEC 10646编码字符集将 会有更多的平面被应用, 需链接字库的数量越来越多, 字符检索效率问题将越 来越突出。
为此, 本发明实施例提供了一种构建超大字库的方法及装置, 在已有字库 格式和显示方式的基础上, 建立基于 TrueType的可容纳更多字符的超大字库, 并针对目前操作系统不支持这种非标准格式的情况, 构建字体引擎中间件和引 导字库。
相应地, 基于这种超大字库, 本发明实施例还提供了一种字符显示方法及 装置, 由字体引擎中间件协助系统字体引擎解释非标准格式的超大字库, 并将 所需显示的字符相关信息从超大字库中提取出来并按照系统字体引擎所需 的信息格式整理好, 然后回传给系统字体引擎, 最终由系统字体引擎将其显 示到用户界面上。
如图 1所示, 本发明实施例构建超大字库的方法的流程包括以下步骤: 步骤 101, 构建引导字库。
与现有的标准格式的字库相比, 所述引导字库可以是标准格式的字库, 但 其只包含基本的 ASCII符号, 并不包含真正的汉字字符。
步骤 102, 构建非标准格式的超大字库。
在組织超大字库的时候, 由于字符数量很庞大, 标准的字库組织格式无 法容纳, 所以以一种非标准的字库格式来存储。 也就是说, 所述超大字库是 一种非标准格式的字库。 具体地, 可以在现有的标准格式之上做一些修改, 比如: 编码的字节数由 2字节变成 4字节, 这样原来最多只能存储 OxFFFF 个字符, 现在则可以存储 OxFFFFFFFF个字符, 满足了超大字库的需求。
每个字体厂商或个人可以根据需要, 将需要加入字库的字符組织成字 库。 由于字符数目的关系, 可以不完全按照字库标准格式来組织, 在解释的 时候会由专用的字体引擎来进行解释。
非标准格式的超大字库主要包括: 用于存储字符编码和索引对照关系的 码表, 用于存储索引和字符数据偏移量对照关系的位置信息表, 用于存储字 符轮廓数据的字形表等。 相对于现有的标准字库, 在超大字库中对编码和索 引以及偏移量进行改进,扩大了其范围,使得超大字库能够存储更多的字符。
步骤 103, 建立用于解释所述超大字库的字体引擎中间件。
由于只有标准格式的字库才能直接被系统字体引擎所解释, 非标准格式 的字库会被系统字体引擎认为是无效字体。 因此, 为了能够识别所述超大字 库中的字符, 在本发明实施例中, 建立字体引擎中间件, 以使所述系统字体 引擎通过调用所述字体引擎中间件, 使其协助系统字体引擎解释超大字库, 并将所需显示的字符相关信息从超大字库中提取出来, 然后按照系统字体引 擎所需的信息格式整理好, 传给系统字体引擎, 最终由系统字体引擎将其显 示到用户界面上。
本发明实施例中所述的超大字库特别适用于需要在一个字库中存放超 过 6万多字符的公司和个人。
可见, 利用本发明实施例的方法, 可以提高现有字库的容量, 方便用户 对不同字符的使用需求。
相应地, 本发明实施例还提供一种构建超大字库的装置, 图 2示出了该装 置的一种结构示意图。
在该实施例中, 所 置 200包括: 引导字库构建单元 201, 超大字库构 建单元 202和中间件构建单元 203。 其中:
引导字库构建单元 201用于构建引导字库;
超大字库构建单元 202用于构建非标准格式的超大字库;
中间件构建单元 203 用于建立用于解释所述超大字库的字体引擎中间 件。
相应地, 基于上述这种非标准格式的超大字库, 本发明实施例还提供了一 种字符显示方法。 为了使本技术领域的人员更好地理解本发明实施例的方案、 以及本发明实施例的方案与现有技术的区别, 下面首先对现有技术中字符显示 的 ¾½进行简要说明。
如图 3所示, 现有技术中显示字库中字符的流程包括以下步骤:
步骤 301,应用程序需要显示某个字符时,将该字符对应的字符编码以及字 体名称传给系统字体引擎。
步骤 302, 系统字体引擎根据所述字体名称查找字体文件。
步骤 303,系统字体引擎根据所述字符编码在查找到的字体文件中查找所述 字符。
具体根据字库文件中的编码索引对照表查找。
步骤 304,如果在所述字体文件中找到所述字符,则根据对应的索引值到字 符轮廓数据表中获取该字符的轮廓数据。
步骤 305, 系统字体引擎根据获取到的轮廓数据显示所述字符。
由于上述这种超大字库的存储范围超过了标准范围, 目前操作系统不支持 这种非标准格式的超大字库, 为此, 本发明实施例提供的字符显示方法由系统 字体引^用字体引擎中间件, 简单方便地实现对超大字库中字符的检索 示, 并大大提高字符显示效率。
如图 4所示, 本发明实施例的字符显示方法的流程包括以下步骤: 步骤 401,字体引擎中间件^^系统字体引擎向引导字库发送的字体调用消 息, 所述字体调用消息中包含所述应用程序需要显示的字符对应的字符编码及 字体名称。
具体地,所述字体引擎中间件可以利用 WINDOWS的钩子函数来拦截字体 调用消息,并获得所述字符编码及字体名称。利用钩子函数既可以截获 windows 中的消息, 也可以截获函数的调用, 包括应用程序对函数的调用和系统对函数 的调用。
步骤 402,所述字体引擎中间件根据所述字符编码及字体名称从非标准格式 的超大字库中获取对应所述字符的轮廓数据。
与现有的标准格式的字库相比, 所述超大字库中可以容纳更多的字符编码 信息及轮廓数据信息。
在具体实现时,可以在引导字库和超大字库之间建立一个一一对应的关系, 将该对应关系引入字体引擎中间件中, 当字体引擎中间件得知系统字体引擎要 调用引导字库时, 就可以根据该对应关系将系统字体引擎对引导字库的读取转 向对超大字库的读取。
字体引擎中间件从超大字库中获取轮廓数据的过程与现有的系统字体引擎 从引导字库中获取轮廓数据的 i½类似, 首先根据截获的字体名称确定需要读 取的字体文件, 然后根据截获的字符编码、 以及所述字体文件中 CMAP表(字 符编码和索引对照表)来获取该字符编码所对应的索引, 然后再根据该索引到 LOCA表中查找该索引所对应的字符在 GLYF表中的偏移量,有了这个偏移量, 就可以直接在 GLYF表中读取字形轮廓数据, 所有字符的字形轮廓数据都存储 在 GLYF表中。
需要说明的是,上述 CMAP表、 LOCA表和 GLYF表与现有技术的字库中 的相应表类似, 在此不再详细描述。
步骤 403,将所述字符的轮廓数据返回给所述系统字体引擎,以使所述系统 字体引擎根据所述字符轮廓数据显示所述字符。
本发明实施例的字符显示方法利用字体引擎中间件拦截系统字体引擎向引 导字库发送的字体调用消息, 从而将系统字体引擎对引导字库的读取转为由字 体引擎中间件对超大字库的读取, 读取完毕将得到的字形轮廓数据返回给系统 字体引擎, 从而简单方便地实现对超大字库中字符的检索及显示, 并大大提高 字符显示效率。 而且在应用层上看来, 感觉也是系统字体引擎自己进 ^取, 不会影响用户体验。
相应地, 本发明实施例还提供一种字符显示装置, 图 5示出了该装置的一 种结构示意图。
在该实施例中, 所述装置包括:
拦截单元 501,用于^ <系统字体引擎发送的字体调用消息,所述字体调用 消息中包含所述应用程序需要显示的字符对应的字符编码及字体名称;
轮廓数据获取单元 502,用于根据所述字符编码及字体名称从超大字库中获 应所述字符的轮廓数据, 所述超大字库为非标准格式的字库;
传送单元 503,用于将所述字符的轮廓数据返回给所述系统字体引擎,以使 所述系统字体引擎根据所述字符轮廓数据显示所述字符。
与现有的标准格式的字库相比, 所述超大字库可以容纳更多的字符编码信 息及轮廓数据信息, 其具体内容与标准格式的字库类似,在前面已有详细说明, 在此不再追述。
在实际应用中,所述拦截单元 501可以利用钩子函数来拦截字体调用消息, 并获得所述字符编码及字体名称。
所述轮廓数据获取单元 502包括: 字体文件查找子单元、 索引值查找子单 元和获取子单元(未图示)。 其中:
所述字体文件查找子单元用于根据所述字体名称从所述超大字库中查找字 体文件;
所述索引值查找子单元用于根据所述字符编码从查找到的字体文件中获取 所述字符编码对应的索引值; 轮廓数据。 本发明实施例的字符显示装置通过^ <系统字体引擎向引导字库发送的字 体调用消息, 从而将系统字体引擎对引导字库的读取转为由字体引擎中间件对 超大字库的读取, 读取完毕将得到的字形轮廓数据返回给系统字体引擎, 从而 简单方便地实现对超大字库中字符的检索及显示, 并大大提高字符显示效率。 而且在应用层上看来, 感觉也是系统字体引擎自己进 ^取, 不会影响用户体 需要说明的是, 本发明实施例的字符显示方法及装置可以应用于各种不同 应用程序, 满足应用程序对字符显示的多种需求, 并且效率高、 速度快。
本说明书中的各个实施例均采用递进的方式描述, 各个实施例之间相同相 似的部分互相参见即可,每个实施例重点说明的都是与其他实施例的不同之处。 尤其, 对于装置实施例而言, 由于其基^目似于方法实施例, 所以描述得比较 简单, 相关之处参见方法实施例的部分说明即可。 以上所描述的系统实施例仅 仅是示意性的, 其中所述作为分离部件说明的单元可以是或者也可以不是物理 上分开的, 作为单元显示的部件可以是或者也可以不是物理单元, 即可以位于 一个地方, 或者也可以分布到多个网络单元上。 可以根据实际的需要选择其中 的部分或者全部模块来实现本实施例方案的目的。 本领域普通技术人员在不付 出创造性劳动的情况下, 即可以理解并实施。
开还提供一种或多种具有计算机可执行指令的计算机可读介廣, 所述 指令在由计算机执行时, 执行上述的构建超大字库的方法或者字符显示方法的 各个步骤。
开还提供一台包括带有计算机可执行指令的一个或多个计算机可读介 质的计算机, 所述指令在由计算机执行时执行上述的构建超大字库的方法或者 字符显示方法。 示例性操作环境
诸如此处所描述的计算机或计算 i殳备具有硬件, 包括一个或多个处理器或 处理单元、 系统存储器和某种形式的计算机可读介廣。 作为示例而非限制, 计 算机可读介廣包括计算机存储介廣和通信介廣。 计算机存储介廣包括以用于存 如计算机可读指令、 数据结构、 程序模块或其它数据的信息的任何方法或 技术实现的易失性与非易失性、 可移动与不可移动介廣。 通信介廣一般以诸如 载波或其它传输机制等已调制数据信号来体现计算机可读指令、 数据结构、 程 序模块或其它数据, 并且包括任何信息传递介廣。 以上的任一种的組合也包括 在计算机可读介廣的范围之内。
计算机可使用至一个或多个远程计算机, 如远程计算机的逻辑连接在网络 化环境中操作。 尽管结合示例性计算系统环境进行了描述, 但本发明的各实施 例可用于众多其它通用或专用计算系统环境或配置。 计算系统环境并非旨在对 本发明的任何方面的使用范围或功能提出任何限制。 此外, 计算机环境也不应 被解释成对于示例性操作环境中所示出的任一組件或其組合有任何依赖或要 求。 适用于本发明的各方面的公知的计算系统、 环境和 /或配置的示例包括, 但 不仅限于: 个人计算机、服务器计算机、 手持式或膝上型 i殳备、 多处理器系统、 基于微处理器的系统、机顶盒、 可编程消费电子产品、移动电话、 网络 PC、 小 型计算机、 大型计算机、 包括上面的系统或设备中的任何一种的分布式计算环 境等等。
可以在由一台或多台计算机或其他设 行的诸如程序模块之类的计算机 可执行的指令的一般上下文中来描 发明的各实施例。 计算机可执行指令可 作为软件被組织成一个或多个计算机可执行組件或模块。 一般而言, 程序模块 包括, 但不限于, 执行特定任务或实现特定抽象数据类型的例程、程序、对象、 組件, 以及数据结构。 可以利用任何数量的这样的組件或模块及其組织来实现 本发明的各方面。 例如, 本发明的各方面不仅限于附图中所示出并且在此处所 描述的特定计算机可执行指令或特定組件或模块。 本发明的其他实施例可以包 或組件。 本发明的各方面也可以在其中任务由通过通信网络链接的远程处理设 行的分布式计算环境中实现。 在分布式计算环境中, 程序模块可以位于包 括存储器存 备在内的 和 计算 储介廣中。
可能以许多方式来实现本发明的方法和装置。 例如, 可通过软件、 硬件、 固件或者软件、 硬件、 固件的任何組合来实现本发明的方法和装置。 用于所述 方法的步骤的上述顺序仅是为了进行说明, 本发明的方法的步骤不限于以上具 ^述的顺序, 除非以其它方式特别说明。 此外, 在一些实施例中, 还可将本 发明实施为记录在记录介廣中的程序, 这些程序包括用于实现根据本发明的方 法的机器可读指令。 因而, 本发明还^^存储用于执行根据本发明的方法的程 序的记录介廣。
以上对本发明实施例进行了详细介绍, 本文中应用了具体实施方式对本发 明进行了阐述, 以上实施例的说明只是用于帮助理解本发明的方法及设备; 同 时, 对于本领域的一般技术人员, 依据本发明的思想, 在具体实施方式及应用 范围上均会有改变之处, 综上所述,本说明书内容不应理解为对本发明的限制。

Claims

1、 一种构建超大字库的方法, 其特征在于, 包括:
构建引导字库;
构建非标准格式的超大字库;
建立用于解释所述超大字库的字体引擎中间件。
2、根据权利要求 1所述的方法, 其特征在于, 所述引导字库只包含基本 的 ASCII符号。
3、根据权利要求 1或 2所述的方法,其特征在于,所述非标准格式的超大 字库编码的字节数为 4 字节。
4、根据权利要求 3所述的方法, 其特征在于, 所述非标准格式的超大字库 包括: 用于存储字符编码和索引对照关系的码表、 用于存储索引和字符数据偏 移量对照关系的位置信息表、 用于存储字符轮廓数据的字形表。
5、 一种字符显示方法, 其特征在于, 包括:
字体引擎中间件拦截系统字体引擎发送的字体调用消息, 所述字体调用消 息中包含所述应用程序需要显示的字符对应的字符编码及字体名称; 据, 所述超大字库为非标准格式的字库;
将所述字符的轮廓数据返回给所述系统字体引擎, 以使所述系统字体引擎 根据所述字符轮廓数据显示所述字符。
6、根据权利要求 5所述的方法, 其特^于, 所述字体引擎中间件拦截系 统字体引擎发送的字体调用消息包括:
所述字体引擎中间件利用钩子函数来拦截字体调用消息, 并获得所述字符 编码及字体名称。
7、根据权利要求 5或 6所述的方法, 其特征在于, 所述根据所述字符编码 及字体名称从超大字库中获取对应所述字符的轮廓数据包括:
根据所述字体名称从所述超大字库中查找字体文件;
根据所述字符编码从查找到的字体文件中获取所述字符编码对应的索引 值;
+ 根据所述索引值从字符轮廓数据表中获取所述字符的轮廓数据。
8、 一种构建超大字库的装置, 其特征在于, 包括:
引导字库构建单元, 用于构建引导字库;
超大字库构建单元, 用于构建非标准格式的超大字库;
中间件构建单元, 用于建立用于解释所述超大字库的字体引擎中间件。
9、 一种字符显示装置, 其特征在于, 包括:
拦截单元, 用于拦截系统字体引擎发送的字体调用消息, 所述字体调用消 息中包含应用程序需要显示的字符对应的字符编码及字体名称;
轮廓数据获取单元, 用于根据所述字符编码及字体名称从超大字库中获取 对应所述字符的轮廓数据, 所述超大字库为非标准格式的字库;
传送单元, 用于将所述字符的轮廓数据返回给所述系统字体引擎, 以使所 述系统字体引擎根据所述字符轮廓数据显示所述字符。
10、 根据权利要求 9所述的装置, 其特征在于,
所述拦截单元用于利用钩子函数来拦截字体调用消息, 并获得所述字符编 码及字体名称。
11、根据权利要求 9或 10所述的装置, 其特征在于, 所述轮廓数据获取单 元包括:
字体文件查找子单元, 用于根据所述字体名称从所述超大字库中查找字体 文件;
索引值查找子单元, 用于根据所述字符编码从查找到的字体文件中获取所 述字符编码对应的索引值;
获取子单元, 用于根据所述索引值从字符轮廓数据表中获取所述字符的轮 廓数据。
PCT/CN2013/088623 2013-07-05 2013-12-05 构建超大字库的方法及装置、字符显示方法及装置 WO2015000259A1 (zh)

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