CN105224509A - A kind of method and device generating font format - Google Patents

Abstract

The invention provides a method and device for generating a font format. The method, applied to a server, includes: receiving the font type transmitted by the terminal application program and the Unicode code corresponding to the text content; according to the font type and the Unicode code, obtaining the font file of the font type corresponding to the A font format set corresponding to the text content; after the font format set is packaged into a file containing font data usable by the application program, it is sent to the terminal application program. The above solution encapsulates the font format on the server side into a file that can be recognized by the application program and provides it to the application program. The generation speed is fast, the data volume is small, and the original effect of the font can be effectively maintained. All content of the font can be completely presented, which greatly improves the user experience.

Description

Method and device for generating font format

technical field

The invention relates to the field of word processing, in particular to a method and device for generating font formats.

Background technique

With the development of science and technology and the popularization of the Internet, a large number of personalized printed products have appeared one after another, such as: personalized customized photo albums, postcards, photo books, etc.; at the same time, a large number of online customized personalized printed products websites have also appeared one after another. Foreign ones such as Shutterfly, MixBook, Blurb, etc. Domestic ones such as Netease Impressionism, My Album.com, etc. Usually, for related products in Europe and the United States, due to the relatively small number of letters in English-speaking countries, there are only more than 100 commonly used characters, and the storage capacity of fonts is relatively small; therefore, the processing of fonts uses the method of downloading the full amount of font data to the local. However, due to the characteristics of Chinese fonts, the national standard GB2312 contains more than 6,000 glyphs even for a relatively small set of characters, and the size of the font file is dozens to hundreds of times that of English national fonts. Directly downloading the full amount of font data has a great impact on bandwidth consumption, calculation consumption, and user experience damage. Therefore, more effective methods are needed to change this situation.

In order to change this situation, some domestic websites generally use each required font to be spliced out in the form of a bitmap to achieve the purpose of display. However, such methods are limited in terms of text enlargement, reduction, and typesetting, and it is difficult to provide users with high-quality and good user experience.

Contents of the invention

The technical problem to be solved by the present invention is to provide a method and device for generating a font format, which is used to solve the problem of splicing each required font in the form of a bitmap commonly used in existing websites, but this method is difficult to enlarge the text. It is difficult to provide high-quality and good user experience because of problems such as , zooming out, and typesetting.

In order to solve the above technical problems, an embodiment of the present invention provides a method for generating a font format, which is applied to a server, including:

Receive the font type transmitted by the terminal application and the Unicode encoding corresponding to the text content;

Obtain a set of font formats corresponding to the text content in the font file of the font type according to the font type and the Unicode encoding;

After the font format collection is packaged into a file containing font data that can be used by the application program, it is sent to the terminal application program.

Further, after the said font format collection is encapsulated into a file containing font data usable by the application program, before sending to the application program, it also includes:

converting each font format in the font format set from the first font format to a second font format, wherein the second font format is a font format recognizable by the application program.

Further, the first font format is a common font format, and the second font format is a compressed font format.

Further, the conversion of each font format in the font format set from the first font format to the second font format is specifically:

The vector curve corresponding to each font format in the font format set is converted from a quadratic Bezier curve to a cubic Bezier curve to generate a compressed font format set.

Further, the file is a file used by a Flash player, wherein the file includes a mapping relationship of font data and a script code for being recognized by the Flash player.

Further, before the font type transmitted by the receiving terminal application program and the Unicode encoding corresponding to the text content, it also includes:

A pre-set font corpus file is stored, and the font corpus file includes a font type and a general font format of characters corresponding to the font type.

Further, according to the font type and the Unicode encoding, the font format set corresponding to the text content in the font file of the font type obtained is specifically:

Searching for a font file corresponding to the font type in the font encyclopedia file according to the font type;

Find the general font format corresponding to each Unicode encoding in the font file to generate a font format set corresponding to the text content.

An embodiment of the present invention provides a device for generating a font format, including:

The receiving module is used to receive the font type transmitted by the terminal application program and the Unicode encoding corresponding to the text content;

A generating module, configured to obtain a font format set corresponding to the text content in the font file of the font type according to the font type and the Unicode encoding;

An encapsulation module, configured to encapsulate the set of font formats into a file containing font data usable by the application;

A sending module, configured to send the file to the terminal application.

Further, the device also includes:

The conversion module is configured to convert each font format in the font format set from a first font format to a second font format, wherein the second font format is a font format recognizable by the application program.

Further, the device also includes:

The storage module is used to store preset font corpus files, and the font corpus files include font types and common font formats of characters corresponding to the font types.

Further, the generating module specifically includes:

A search unit, configured to search for a font file corresponding to the font type in the font encyclopedia file according to the font type;

A generating unit, configured to search the font file for a common font format corresponding to each Unicode code and generate a set of font formats corresponding to the text content.

The beneficial effects of above-mentioned technical scheme of the present invention are as follows:

In the above solution, by encapsulating the font format on the server side into a file that can be recognized by the application program and providing it to the application program, the generation speed is fast, the data volume is small, and the original effect of the font can be effectively maintained. The entire content of the font can be fully presented under the screen, which greatly improves the user experience.

Description of drawings

Fig. 1 is the overall flowchart of the described method of the embodiment of the present invention;

Fig. 2 is the detailed flowchart of the described method of the embodiment of the present invention;

Fig. 3 is a schematic diagram of the device modules of the embodiment of the present invention.

detailed description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

The present invention splices each required font in the form of a bitmap for the common use of existing websites, but this type of method is stretched in terms of text enlargement, reduction, typesetting, etc., and it is difficult to provide high-quality and good user experience. Provided are a method and device for generating a font format.

As shown in Figure 1, the method for generating a font format in the embodiment of the present invention includes:

Step 10, receiving the font type transmitted by the terminal application program and the Unicode encoding corresponding to the text content;

Step 20, according to the font type and the Unicode encoding, obtain the font format set corresponding to the text content in the font file of the font type;

Step 30, after encapsulating the set of font formats into a file containing font data usable by the application program, sending it to the terminal application program.

It should be noted that, according to the input content, the terminal application sends the font type and the Unicode encoding corresponding to the text content to the server through the HTTP protocol (hypertext transfer protocol), and the server will search for the font format The collection is packaged as a file that can be recognized by the application program, and provided to the application program, which reduces the user's data transmission volume and meets the user's need to use different fonts in a timely manner; , The typesetting is more flexible and efficient, and it can effectively maintain the original effect of the font and improve the user experience.

In order to facilitate the generation of the font format, before step 10, it also includes: storing a preset font corpus file, the font corpus file includes the font type and the general font format of the characters corresponding to the font type.

It should be noted that the font collection file contains multiple font types and the general font format of the characters corresponding to the font type, such as the general font format of all the characters corresponding to the imitation Song font type. For Chinese fonts, it should at least meet the GB2312 standard, preferably Specifically, in order to meet the standards of GBK or GB18030 and above; the font collection file can be a standard TTF (TrueTypeFont, a font name, representing a general font) file, or an OTF (OpenTypeFont, a font name) file, The complete set of font files is stored in the server after being set. Further, operations such as adding, changing, and deleting the complete set of font files can be performed at any time according to needs, so that end users can use the complete set of fonts without updating or downloading corresponding font files. font.

In another embodiment of the present invention, the step 20 specifically includes:

Step 21, searching for a font file corresponding to the font type in the font encyclopedia file according to the font type;

Step 22: Search the font file for the general font format corresponding to each Unicode code to generate a font format set corresponding to the text content.

Because the font files are distinguished by font type in the server, when generating the font format set, the corresponding font file is first located according to the font type, and then the font file that matches each Unicode code is searched. Font formats make up a font format collection.

It should be noted that the font format stored in the server may not be the font format recognized by the application program. Therefore, the method in the embodiment of the present invention, before step 30, further includes:

converting each font format in the font format set from the first font format to a second font format, wherein the second font format is a font format recognizable by the application program.

When the usage environment of the application program is Flash, the running environment needs to use the font format of CFF (CompactFontFormat, compressed font format). format, the conversion from the first font format to the second font format is as follows:

converting the vector curve corresponding to each font format in the font format set from a quadratic Bezier curve to a cubic Bezier curve to generate a compressed font format set, wherein the first font format is a general font format, and the The second font format is a compressed font format.

It should be noted that the step-up operation using Bezier curves is specifically:

Use the characteristic of B(t)=(1-t)B(t)+tB(t) to carry out the step-up operation, and multiply each item b _i,n(t) P _i in the curve equation by ( 1-t) or t, let each item go up one level, the specific examples are as follows:

(1-t) ² P ₀ +2(1-t)tP ₁ +t ² P ₂

＝(1-t) ³ P ₀ +(1-t) ² tP ₀ +2(1-t) ² tP ₁ +2(1-t)t ² P ₁ +(1-t)t ² P ₂ + t ³ P ₂

＝(1-t) ³ P ₀ +3(1-t) ² t(P ₀ +2P ₁ )/3+3(1-t)t ² (2P ₁ +P ₂ )/3+t ³ P ₂

Further, when the usage environment of the application program is a Flash situation, the font format collection should be packaged into a SWF file (SWF is the abbreviation of ShockWaveFlash, which is a An animation file format that supports vector and dot-matrix graphics, SWF files are also commonly referred to as Flash files); wherein the SWF files include the mapping relationship of font data and script codes for recognition by Flash player programs.

Specifically, according to the format description requirements of Adobe's "SWFFileFormatSpecificationVersion19", several data structures and SWFTags (tags) need to be generated, including:

SWFHeader, used to describe the basic information of SWF;

FileAttributes, describing the configuration of FlashPlayer;

SetBackgroundColor, set the background color;

DefineFont4, save the CFF font instance;

DefineBinaryData, save the JSON description information used by the application;

DoABC2, save the ActionScriptByteCode (ABC code) program used to export fonts;

ExportAssets, providing the export name when the application imports the SWF file;

SymbolClass, which associates CFF font resources, JSON description information resources with ABC programs;

ShowFrame, tells FlashPlayer what to display on the display list;

End, marks the end of the SWF.

The most important ones are the four tags DefineFont4, DefineBinaryData, DoABC2, and SymbolClass used to save CFF font instances.

DefineBinaryData saves the JSON data of the font description, and the application operates on the font according to the described application data, which includes: fontname, contained_characters, missing_characters and other data.

DoABC2 contains a corresponding export program, which is a program similar to the following:

The above program code is used for the program interface provided to FlashPlayer when importing font collection and JSON description.

As shown in Figure 2, with the font collection being packaged into SWF files, providing the Flash player for use as an example, the detailed process of the method of the present invention is described as follows:

First, store the set font complete set file on the server side for searching font format; when the user uses the application program on the terminal, when it comes to the operation of the font, the type of font and the text content input by the user will be input by the application program The Unicode encoding corresponding to the font type and text content is transmitted to the server through the HTTP protocol. For example, if the font type selected by the user is "Kai Ti", the input text content is "Founder", and the corresponding Unicode encoding is "U+65B9, U+ 6B63", at this time, the application will transmit the font type "Kai Ti" and "U+65B9, U+6B63" to the server; the server obtains the font file corresponding to the font type according to the received font type and the Unicode code The font formats corresponding to the "U+65B9" and "U+6B63" form a font format set; then, the server converts the vector curve corresponding to each font format in the font format set from a quadratic Bezier curve to Cubic Bezier curves to generate a set of compressed font formats; next, the server will encapsulate the set of compressed font formats into a SWF file, and embed script codes in the SWF file for the The SWF file is sent to the terminal application program through the HTTP protocol for use by the terminal application program.

In the above-mentioned embodiment, by encapsulating the font format collection into a SWF file in the form of vector fonts, and providing it to the Flash player program, it avoids the text deformation and distortion caused by the traditional splicing of fonts in the form of bitmaps and passing them to the application program for use. disadvantages; and this text format generation method has fast generation speed and small data volume; at the same time, the standard vector font format can effectively maintain the original effect of the font, and can fully present all the content of the font at any scaling ratio; and can Directly used in professional typesetting systems, it has a more flexible form of expression than the traditional bitmap method in terms of text typesetting, changing text display form, changing font color, and adding font effects; and by adding, modifying, and deleting fonts on the server file, so that the user can use the font without downloading and installing the corresponding font file by himself, which greatly improves the convenience of the user. To sum up, the method of the present invention facilitates the use of the user and greatly improves the user experience.

As shown in Figure 3, the device for generating a font format according to the embodiment of the present invention includes:

The receiving module 11 is used to receive the font type transmitted by the terminal application program and the Unicode encoding corresponding to the text content;

A generating module 12, configured to obtain a font format set corresponding to the text content in the font file of the font type according to the font type and the Unicode encoding;

An encapsulation module 13, configured to encapsulate the set of font formats into a file containing font data usable by the application;

The sending module 14 is configured to send the file to the terminal application program.

In another embodiment of the present invention, the device further includes:

The conversion module is configured to convert each font format in the font format set from a first font format to a second font format, wherein the second font format is a font format recognizable by the application program.

In yet another embodiment of the present invention, the device further includes:

The storage module is used to store preset font corpus files, and the font corpus files include font types and common font formats of characters corresponding to the font types.

It should be noted that the generating module specifically includes:

A search unit, configured to search for a font file corresponding to the font type in the font encyclopedia file according to the font type;

A generating unit, configured to search the font file for a common font format corresponding to each Unicode code and generate a set of font formats corresponding to the text content.

It should be noted that this device embodiment is a device corresponding to the above-mentioned method, all implementation modes of the above-mentioned method are applicable to this device embodiment, and can also achieve the same technical effect as the above-mentioned method.

What has been described above is a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications can also be made without departing from the principle of the present invention. These improvements and modifications should also be considered as Be the protection scope of the present invention.

Claims (11)

1. generate a method for font format, be applied to a server, it is characterized in that, comprising:

The font type of receiving terminal application transfer and word content corresponding Unicode coding;

Encode according to described font type and described Unicode, obtain font format set corresponding with described word content in the font file of described font type;

After described font format group encapsulates being become described application program is spendable and comprising the file of character font data, send to described end application.

2. method according to claim 1, is characterized in that, described described font format group encapsulates is become described application program is spendable and comprises the file of character font data after, before sending to described application program, also comprise:

By each font format in described font format set, convert the second font format to by the first font format, wherein, described second font format is the discernible font format of described application program.

3. method according to claim 2, is characterized in that, described first font format is general font form, and described second font format is compressed font form.

4. method according to claim 3, is characterized in that, described by each font format in described font format set, converts the second font format to be specially by the first font format:

Be three Bayside curves by vector curve corresponding for each font format in described font format set by secondary Bayside Curve transform, generate the set of compressed font form.

5. method according to claim 4, is characterized in that, described file is the file that Flash playing program uses, and wherein said file comprises the mapping relations of character font data and the scripted code for the identification of confession Flash playing program.

6. method according to claim 1, is characterized in that, the font type of described receiving terminal application transfer and word content corresponding Unicode coding before also comprise:

Store the font complete or collected works file that pre-sets, described font complete or collected works file comprises the general font form of font type and word corresponding to font type.

7. method according to claim 6, is characterized in that, describedly encodes according to described font type and described Unicode, obtains font format set corresponding with described word content in the font file of described font type and is specially:

In described font complete or collected works file, the font file corresponding with described font type is searched according to described font type;

In described font file, search the general font form of encoding corresponding with described each Unicode generate font format set corresponding to described word content.

8. generate a device for font format, it is characterized in that, comprising:

Receiver module, for the font type of receiving terminal application transfer and Unicode coding corresponding to word content;

Generation module, for encoding according to described font type and described Unicode, obtains font format set corresponding with described word content in the font file of described font type;

Package module, for becoming the spendable file comprising character font data of described application program by described font format group encapsulates;

Sending module, for sending to described end application by described file.

9. device according to claim 8, is characterized in that, also comprises:

Modular converter, for by each font format in described font format set, converts the second font format to by the first font format, and wherein, described second font format is the discernible font format of described application program.

10. device according to claim 8, is characterized in that, also comprises:

Memory module, for storing the font complete or collected works file pre-set, described font complete or collected works file comprises the general font form of font type and word corresponding to font type.

11. devices according to claim 10, is characterized in that, described generation module specifically comprises:

Search unit, for searching the font file corresponding with described font type according to described font type in described font complete or collected works file;

Generation unit, generates font format set corresponding to described word content for searching the general font form of encoding corresponding with described each Unicode in described font file.