CN114118023A - Method for converting OFD file - Google Patents
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- CN114118023A CN114118023A CN202111455582.9A CN202111455582A CN114118023A CN 114118023 A CN114118023 A CN 114118023A CN 202111455582 A CN202111455582 A CN 202111455582A CN 114118023 A CN114118023 A CN 114118023A
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Abstract
The invention discloses a method for converting an OFD file, which comprises the following steps: decompressing the OFD file; obtaining an OFD.xml configuration file and a resource object, and analyzing a corresponding relation between the resource object and a page; analyzing the content object and the related information of each page, wherein the related information comprises position information, drawing parameters and page numbers; converting the position information to form new related information; generating a basic format data stream file structure; writing the content object, the new related information and the resource object into a format data stream file structure; and writing the corresponding relation into a corresponding file configuration information file, and packaging to generate a format data stream file. The method has the advantages that the OFD file is converted into the format data stream file, a system applying the format data stream file can be adapted to the OFD file, the application range of the OFD file is expanded, the content of the file can be edited, and the data filling and extending of a local area can be carried out according to actual needs.
Description
Technical Field
The invention relates to the field of electronic file format conversion, in particular to a method for converting an OFD file into a format data stream file.
Background
The format data stream file integrates three applications of format file reading, file and stream data interaction and form handwriting signing under a user interface; the file is realized mainly based on innovative technologies such as automatic reconstruction of a file bottom plate, multi-level hierarchical structure display, a handwriting engine, multi-file combination, sequential and quick reading, endorsement closure traceability, overlapping and the like:
1. reading experience of layout software;
2. flexibility: flexible interaction of data is realized;
3. diversification: the system has the advantages that the system adopts a standardized signing mode, files support mixed signing of multiple input modes such as a keyboard, handwriting, a path object or audio and the like, and the handwriting signing bottom plate is mutually controlled, so that the problem that the input content of a single user is too much, and other input areas cannot be occupied due to the fact that unit cells cannot be extended is solved, and the practicability and the applicability of the signing are improved; the endorsement contents are automatically sequenced according to a certain rule so that opinion endorsement is more standardized;
4. the layered arrangement rendering mode is favorable for transmission, and the cohesion is high and the coupling is low;
5. compatibility: the system can run on a plurality of different operating systems such as Windows, Linux, Galaxy kylin, UOS, Chinese Koidesia and the like;
6. stability: through the evolution of a plurality of main versions, the product has rich functions, is stable and reliable, can highly replace imported similar software, has a plurality of innovative functions, and is independently innovative excellent domestic office software.
The OFD format is an electronic file format document format which is independently controllable in China, is fixed in layout, does not run the layout and can be obtained by what you see, and can be regarded as digital paper in the computer age. However, the OFD file is not applied to an actual service system at present, and after the OFD file is formed, the body cannot be edited and tampered, and only information such as a comment seal can be attached to the OFD file.
Disclosure of Invention
It is an object of the present invention to provide a method for converting OFD files that solves one or more of the above mentioned problems of the prior art.
In a first aspect, the present invention provides a method for converting an OFD file, comprising the steps of:
decompressing the OFD file;
acquiring a configuration file and a resource object, and analyzing the corresponding relation between the resource object and a page;
analyzing the content object and the related information of each page, wherein the related information comprises position information, drawing parameters and page numbers;
converting the position information to form new related information by combining the position information with the drawing parameters and the page numbers;
generating a basic format data stream file structure;
writing the content object, the new related information and the resource object into a format data stream file structure;
and writing the corresponding relation into a file configuration information file in a format data stream file structure, and packaging to generate a format data stream file.
In some embodiments, the content object and related information of each page are analyzed by adopting a multi-thread concurrent process.
In some embodiments, the rendering parameters include a line connection style, a line frame, a dotted line style, a dotted line repetition style, a line endpoint style, a fill color, a border check color, bold, italics, if a glyph is equal in width, an inline glyph font, if a font is filled, a fill color, if a font is bordered, a border check color, a thickness value, an image border horizontal corner radius, an image border vertical corner radius, an image border style.
In some embodiments, the content object includes a text object, a path object, and an image object, the position information corresponding to the text object and the image object includes coordinates, width, and height, and the position information corresponding to the path object includes coordinates of a start point and coordinates of an end point.
In some embodiments, the conversion process when the content object is a text object or an image object is: the position information of the content object is read, and the position information of the content object is converted into position information conforming to a reference.
In some embodiments, the text object comprises words, word punctuation, word separation symbols, bullets, numbers, formulas, or various combinations thereof, and the image object comprises images and video.
In some embodiments, the benchmark-compliant location information refers to location information based on 1024 points, and the specific conversion process is:
the page width value of the OFD file in the same measurement unit is w;
the coordinates, width values, height values of the content objects in the OFD file are (x1, y1), w1, h 1;
coordinates, width values and height values which correspond to the drawing parameters with the reference are (x2, y2), w2 and h 2;
the conversion formula between the two is as follows:
scale=1024/w,
x2=x1*scale,
y2=y1*scale,
w2=w1*scale,
h2=h1*scale。
in some embodiments, the conversion process of the content object as a path object is: and reading the coordinates of the starting point and the coordinates of the end point of the path object, and converting the coordinates of the starting point and the coordinates of the end point of the path object into the coordinates of the starting point and the coordinates of the end point which accord with the reference.
In some embodiments, the coordinates of the start point and the coordinates of the end point of the reference refer to coordinates of the start point and coordinates of the end point based on 1024 points, and the specific conversion process is as follows:
the page width value of the OFD file in the same measurement unit is w;
coordinates of a start point of the content object in the OFD file are (x3, y3), and coordinates of an end point are (x4, y 4);
coordinates of a corresponding start point in the drawing parameters with the reference are (x5, y5), and coordinates of an end point are (x6, y 6);
the conversion formula between the two is as follows:
scale=1024/w,
x5=x3*scale,
y5=y3*scale,
X6=x4*scale,
Y6=y4*scale。
in some embodiments, the resource object includes an attachment, a multimedia file, a font, and a signature, and the process of writing the format data stream file structure by the resource object is:
s1, judging whether the format data stream file structure comprises the resource object, and if the format data stream file structure comprises the resource object, entering S2;
s2, acquiring a hash value of the resource object, judging whether the resource object with the same hash value as the resource object exists in the format data stream file structure, if so, adding the resource object repeatedly, and if not, entering S3;
and S3, generating an id corresponding to the resource object, writing the id and the resource object into a format data stream file structure as a key and a value respectively in a form of a key, value and key value pair, and modifying the corresponding relation related to the resource object in the reference relation between the page and the resource object into the id.
In a second aspect, the present invention proposes an apparatus for converting an OFD file, comprising at least one storage medium and at least one processor;
the at least one storage medium is configured to store computer instructions;
the at least one processor is configured to execute the computer instructions to implement a method for converting an OFD file recited in the first aspect.
The method for converting the OFD file into the format data stream file has the advantages that:
converting the OFD file into the layout data stream file enables the file to have the characteristics of the layout data stream file:
flexible and multi-element;
the file content can be edited, the operations of signing, adding video and audio and the like can be performed, the hierarchy is clear, and the readability is strong;
the layout file is displayed and combined with the data stream, and during signing, data filling and extension of a local area can be performed according to actual needs;
good compatibility, easy maintenance and conversion.
Drawings
Fig. 1 is a flow chart of a method of reprinting a data stream file from an OFD file in some embodiments of the invention;
FIG. 2 is a schematic diagram of elements of a layout data stream file structure of the present invention.
Detailed Description
The invention provides a method for converting an OFD file, which writes a related program in an application system and executes the program, and combines the contents shown in FIG. 1 and FIG. 2 to execute a process, namely the method for converting the format data stream file of the OFD file comprises the following steps:
step 1, decompressing OFD files;
finding out an OFD.xml configuration file and a resource object in the decompressed content, wherein the resource object comprises an attachment, a multimedia file, a font and a signature, acquiring a root directory, and analyzing the corresponding relation between the resource object and a page, such as: the font reference is in the form of id, and the font corresponding to the id is defined in other places, such as
The id corresponding to the Song body in one section of script information is 4, the id corresponding to the Times New Roman is 7:
the fonts corresponding to the ids 4 and 7 in the other piece of script information are defined:
step 3, the content object and the related information of each page are analyzed through multithreading, the content of each page is read, the related information of the content object is analyzed, the content object comprises a text object, a path object and an image object, the related information comprises position information, drawing parameters and page numbers, one page corresponds to one thread,
drawing parameters comprise line connection style, a line frame, dotted line style (default from 0), dotted line repeated style (dotted line width and interval width), line endpoint style, filling color, edge-hooking color, bold, italics, font with equal width, font embedded font, font with equal width, color filling, font edge-hooking, edge-hooking color, thickness value, image frame horizontal angle radius, image frame vertical angle radius, image frame style (line width, color, edge-hooking filling and dotted line on the upper surface), wherein the color comprises (basic color, shading filling, radial gradient, axial gradient and high lode gradient);
the text object comprises characters, character punctuations, character separation symbols, item symbols, numbers, formulas or various combinations thereof;
the path object comprises a straight line, a rectangle, a Bezier curve or any shape formed by a combination of a plurality of the straight line, the rectangle and the Bezier curve;
the image objects comprise images and videos;
step 4, converting the position information to form new related information by combining the position information with the drawing parameters and the page numbers, wherein the sizes of different devices are different, so the drawing parameters described below need to meet the same reference, and during the rendering, one rendering is performed according to the relation between the reference and the screen size, for example, the reference is based on 1024, the width of the screen 2048, and at this time 2048/1024 is 2, so the abscissa and the ordinate in the position information are both multiplied by 2, the primary purpose is that the vector is not blurred, taking 1024 as an example,
the conversion process when the content object is a text object or an image object is as follows:
step 4.1.1, reading the position information of the content object, and converting the position information of the content object into position information which accords with a reference, wherein the position information comprises coordinates, width and height;
4.1.2, converting, wherein the page width value of the OFD file in the same measurement unit is w; the coordinates, width values, height values of the content objects in the OFD file are (x1, y1), w1, h 1; coordinates, width values and height values corresponding to the position information of the combined reference are (x2, y2), w2 and h 2;
the conversion formula between the two is as follows:
scale=1024/w,
x2=x1*scale,
y2=y1*scale,
w2=w1*scale,
h2=h1*scale;
for example, 300 × 300 pages are converted into 1024 coordinates, and the coordinates, width values, and height values of the content objects are (20, 20), and the rendering parameters after 30, 30 conversion are expressed as (x3, y3), w3, and h3, which is x3 — 1024/300 — 20;
the conversion process when the content object is a path object is as follows:
step 4.2.1, reading the position information of the content object, and converting the position information of the content object into position information which accords with a reference, wherein the position information comprises a coordinate of a starting point and a coordinate of an end point;
4.2.2, converting, wherein the page width value of the OFD file in the same measurement unit is w;
coordinates of a start point of the content object in the OFD file are (x3, y3), and coordinates of an end point are (x4, y 4);
coordinates of a corresponding start point in the drawing parameters with the reference are (x5, y5), and coordinates of an end point are (x6, y 6);
the conversion formula between the two is as follows:
scale=1024/w,
x5=x3*scale,
y5=y3*scale,
X6=x4*scale,
Y6=y4*scale;
step 5, generating a basic format data stream file structure;
step 6, writing the content object, the new related information and the resource object into a format data stream file structure,
the process of writing the resource object into the format data stream file structure body is as follows:
s6.1.1, judging whether the format data stream file structure comprises resource objects, and entering S6.1.2 if the format data stream file structure comprises the resource objects;
s6.1.2, acquiring a hash value of the resource object, and judging whether the resource object with the same hash value as the resource object exists in the format data stream file structure, if so, adding the resource object repeatedly, and if not, entering S6.1.3;
s6.1.3, generating an id corresponding to the resource object, writing the id and the resource object into a format data stream file structure as a key and a value respectively in a key, value and key value pair mode, and modifying the corresponding relation related to the resource object in the reference relation of the page and the resource object into the id;
step 7, writing the corresponding relation of each page into a configuration information file of the file, wherein docinnfo comprises information, a title, a description, a subtitle, a version number, an author and the like of the file; pages contain page numbers of files, and paths represent file content names, specific content information of a current page is found according to the paths, id is only a unique identifier, the pages contain multiple pages, and corresponding script information is in the following format:
and 8, finally, packaging the page content file and the configuration information file of the file together to compress the page content file and the configuration information file of the file into a format data stream file. This enables a system applying the layout data stream file to adapt the OFD file.
The OFD file is converted into the format data stream file by the above method to obtain the excellent characteristics of the format data stream file, which includes:
firstly, reading experience of layout software;
secondly, flexibility: flexible interaction of data is realized;
thirdly, diversification: the system has the advantages that the system adopts a standardized signing mode, files support mixed signing of multiple input modes such as a keyboard, handwriting, a path object or audio and the like, and the handwriting signing bottom plate is mutually controlled, so that the problem that the input content of a single user is too much, and other input areas cannot be occupied due to the fact that unit cells cannot be extended is solved, and the practicability and the applicability of the signing are improved; the endorsement contents are automatically sequenced according to a certain rule so that opinion endorsement is more standardized;
fourthly, the layered arrangement rendering mode is favorable for transmission, and the cohesion is high and the coupling is low;
fifthly, compatibility: the system can run on a plurality of different operating systems such as Windows, Linux, Galaxy kylin, UOS, Chinese Koidesia and the like;
sixthly, stability: through the evolution of a plurality of main versions, the product has rich functions, is stable and reliable, can highly replace imported similar software, has a plurality of innovative functions, and is independently innovative excellent domestic office software.
The invention provides a device for converting an OFD file, which comprises at least one storage medium and at least one processor;
at least one storage medium for storing computer instructions;
at least one processor is configured to execute the computer instructions to implement the method for converting an OFD file described above.
The foregoing is only a preferred form of the invention and it should be noted that several similar variations and modifications could be made by one skilled in the art without departing from the inventive concept of the present invention and these should also be considered as the protection scope of the present invention.
Claims (10)
1. A method for converting an OFD file, comprising the steps of:
decompressing the OFD file;
acquiring a configuration file and a resource object, and analyzing the corresponding relation between the resource object and a page;
analyzing the content object and the related information of each page, wherein the related information comprises position information, drawing parameters and page numbers;
converting the position information to form new related information by combining the position information with the drawing parameters and the page numbers;
generating a basic format data stream file structure;
writing the content object, the new related information and the resource object into a format data stream file structure;
and writing the corresponding relation into a file configuration information file in a format data stream file structure, and packaging to generate a format data stream file.
2. The method for converting an OFD file according to claim 1, wherein,
and when the content object and the related information of each page are analyzed, multithreading concurrent processing is adopted.
3. The method for converting an OFD file according to claim 1, wherein,
the drawing parameters comprise line connection patterns, line frames, dotted line patterns, dotted line repeated patterns, line end point patterns, filling colors, edge-hooking colors, bold, italics, font with equal width, font with embedded font, font filling, color filling, font edge-hooking, edge-hooking colors, thickness values, horizontal corner radius of the image frame, vertical corner radius of the image frame and image frame patterns.
4. The method for converting an OFD file according to claim 1, wherein the content object comprises a text object, a path object and an image object, the position information corresponding to the text object and the image object comprises coordinates, width and height, and the position information corresponding to the path object comprises coordinates of a start point and coordinates of an end point.
5. The method for converting an OFD file according to claim 4, wherein the conversion process when the content object is a text object or an image object is as follows: reading the position information of the content object, and converting the position information of the content object into position information conforming to a reference, wherein the text object comprises characters, character punctuations, character separation symbols, bullets, numbers, formulas or a plurality of combinations thereof, and the image object comprises images and videos.
6. The method for converting an OFD file according to claim 5, wherein the reference-compliant location information refers to location information based on 1024 points, and the specific conversion process is as follows:
the page width value of the OFD file in the same measurement unit is w;
the coordinates, width values, height values of the content objects in the OFD file are (x1, y1), w1, h 1;
coordinates, width values and height values which correspond to the drawing parameters with the reference are (x2, y2), w2 and h 2;
the conversion formula between the two is as follows:
scale=1024/w,
x2=x1*scale,
y2=y1*scale,
w2=w1*scale,
h2=h1*scale。
7. the method for converting an OFD file according to claim 4, wherein the conversion process of the content object into the path object is: and reading the coordinates of the starting point and the coordinates of the end point of the path object, and converting the coordinates of the starting point and the coordinates of the end point of the path object into the coordinates of the starting point and the coordinates of the end point which accord with the reference.
8. The method for converting an OFD file according to claim 7, wherein the coordinates of the start point and the coordinates of the end point according to the reference refer to the coordinates of the start point and the coordinates of the end point based on 1024 points, and the specific conversion process is as follows:
the page width value of the OFD file in the same measurement unit is w;
coordinates of a start point of the content object in the OFD file are (x3, y3), and coordinates of an end point are (x4, y 4);
coordinates of a corresponding start point in the drawing parameters with the reference are (x5, y5), and coordinates of an end point are (x6, y 6);
the conversion formula between the two is as follows:
scale=1024/w,
x5=x3*scale,
y5=y3*scale,
X6=x4*scale,
Y6=y4*scale。
9. the method for converting an OFD file according to claim 1, wherein the resource object comprises an attachment, a multimedia file, a font and a signature, and the process of writing the format data stream file structure by the resource object is:
s1, judging whether the format data stream file structure comprises the resource object, and if the format data stream file structure comprises the resource object, entering S2;
s2, acquiring a hash value of the resource object, judging whether the resource object with the same hash value as the resource object exists in the format data stream file structure, if so, adding the resource object repeatedly, and if not, entering S3;
and S3, generating an id corresponding to the resource object, writing the id and the resource object into a format data stream file structure as a key and a value respectively in a form of a key, value and key value pair, and modifying the corresponding relation related to the resource object in the reference relation between the page and the resource object into the id.
10. An apparatus for converting an OFD file, the apparatus comprising at least one storage medium and at least one processor;
the at least one storage medium is configured to store computer instructions;
the at least one processor is configured to execute the computer instructions to implement a method for converting an OFD file according to any one of claims 1 to 9.
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CN117725885B (en) * | 2024-01-26 | 2024-04-26 | 江苏中威科技软件***有限公司 | Method for affecting reading operation effect by layering and engraving OFD file |
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