CN111381781A - Processing method and device for printed file - Google Patents

Processing method and device for printed file Download PDF

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Publication number
CN111381781A
CN111381781A CN201811631890.0A CN201811631890A CN111381781A CN 111381781 A CN111381781 A CN 111381781A CN 201811631890 A CN201811631890 A CN 201811631890A CN 111381781 A CN111381781 A CN 111381781A
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China
Prior art keywords
dimensional code
emf
printer
image
matrix data
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Pending
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CN201811631890.0A
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Chinese (zh)
Inventor
于晴
徐志亮
贺瑞喜
房欢
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BEIJING TIP TECHNOLOGY CO LTD
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BEIJING TIP TECHNOLOGY CO LTD
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Priority to CN201811631890.0A priority Critical patent/CN111381781A/en
Publication of CN111381781A publication Critical patent/CN111381781A/en
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/12—Digital output to print unit, e.g. line printer, chain printer
    • G06F3/1201—Dedicated interfaces to print systems
    • G06F3/1223—Dedicated interfaces to print systems specifically adapted to use a particular technique
    • G06F3/1237—Print job management
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/12—Digital output to print unit, e.g. line printer, chain printer
    • G06F3/1201—Dedicated interfaces to print systems
    • G06F3/1202—Dedicated interfaces to print systems specifically adapted to achieve a particular effect
    • G06F3/1211—Improving printing performance
    • G06F3/1215—Improving printing performance achieving increased printing speed, i.e. reducing the time between printing start and printing end
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/12—Digital output to print unit, e.g. line printer, chain printer
    • G06F3/1201—Dedicated interfaces to print systems
    • G06F3/1202—Dedicated interfaces to print systems specifically adapted to achieve a particular effect
    • G06F3/1218—Reducing or saving of used resources, e.g. avoiding waste of consumables or improving usage of hardware resources
    • G06F3/122—Reducing or saving of used resources, e.g. avoiding waste of consumables or improving usage of hardware resources with regard to computing resources, e.g. memory, CPU
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/12—Digital output to print unit, e.g. line printer, chain printer
    • G06F3/1201—Dedicated interfaces to print systems
    • G06F3/1223—Dedicated interfaces to print systems specifically adapted to use a particular technique
    • G06F3/1237—Print job management
    • G06F3/1253—Configuration of print job parameters, e.g. using UI at the client

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Record Information Processing For Printing (AREA)

Abstract

The invention discloses a method and a device for processing a printed file, which relate to the technical field of information security, and the method comprises the following steps: the terminal draws an enhanced metafile EMF image to be printed into a printer device context DC for drawing printer output by calling a PlayEnhMetaFile function; the terminal draws pre-stored pixel point matrix data of the two-dimensional code for being superposed in the EMF image into the printer DC by calling a SetPixel function; and the terminal transmits the EMF image drawn in the printer DC and the pixel point matrix data of the two-dimensional code to a printer for printing by calling an EndPage function, so that the printer outputs the EMF image superposed with the two-dimensional code.

Description

Processing method and device for printed file
Technical Field
The invention relates to the technical field of information security, in particular to a method and a device for processing a printed file.
Background
The two-dimensional code is also called as a two-dimensional bar code, and the common two-dimensional code can store more information and represent more data types than the traditional bar code.
The two-dimensional bar code/two-dimensional code records data symbol information by black and white figures which are distributed on a plane (two-dimensional direction) according to a certain rule by using a certain specific geometric figure; the concept of '0' and '1' bit stream which forms the internal logic base of computer is skillfully utilized in coding, a plurality of geometric shapes corresponding to binary system are used for representing literal numerical information, and the information is automatically read by an image input device or an optoelectronic scanning device so as to realize the automatic processing of the information: it has some commonality of barcode technology: each code system has its specific character set; each character occupies a certain width; has certain checking function and the like. Meanwhile, the method also has the function of automatically identifying information of different rows and processing the graph rotation change points.
When the printing monitoring and auditing system prints and outputs, a two-dimensional code needs to be embedded into output paper. The current method for printing and outputting the superposed two-dimensional code is to directly draw the two-dimensional code in raster pictures such as bmp, jpg and the like, and then to transmit the pictures to a printer all the time to finish printing and outputting. For raster pictures with high resolution, the occupied space is very large, for network printers, large network bandwidth is needed to transmit print data, the performance of a monitoring system and the printing output efficiency are seriously influenced, and compared with format pictures such as bmp (enhanced metafile), EMF (enhanced metafile) format files have much smaller occupied space of a memory and a disk, so that the EMF files are used as the printing output files in a printing monitoring and auditing system, but the EMF files belong to vector pictures and cannot be used for directly drawing two-dimensional codes on the EMF files.
Disclosure of Invention
The technical problem solved by the scheme provided by the embodiment of the invention is that when the EMF file is used as a printout file, a two-dimensional code cannot be directly drawn on the EMF file.
The processing method for the printed file provided by the embodiment of the invention comprises the following steps:
the terminal draws an enhanced metafile EMF image to be printed into a printer DC (Device Context) for drawing printer output by calling a PlayEnhMetaFile function;
the terminal draws pre-stored pixel point matrix data of the two-dimensional code for being superposed in the EMF image into the printer DC by calling a SetPixel function;
and the terminal transmits the EMF image drawn in the printer DC and the pixel point matrix data of the two-dimensional code to a printer for printing by calling an EndPage function, so that the printer outputs the EMF image superposed with the two-dimensional code.
Preferably, the pixel matrix data of the two-dimensional code, which is pre-stored by the terminal and is used for being superimposed in the EMF image, includes:
the terminal encodes the content information character string to be contained in the two-dimensional code by using a QR (quick response) encoding rule, and generates and stores pixel point matrix data of the two-dimensional code which is used for being superposed in an EMF (electromagnetic field effect) image;
and the numerical value of each point of the two-dimensional code pixel dot matrix is 1 or 0.
Preferably, the method further comprises the following steps:
before the terminal prints a file, judging whether the printed file is an EMF format file;
and if the printed file is judged not to be the EMF format file, the terminal converts the file to be printed into the EMF format file.
Preferably, the terminal draws pre-stored pixel matrix data of the two-dimensional code for superimposing on the EMF image into the printer DC by calling a SetPixel function, including:
the terminal reads matrix data of each pixel point of the two-dimensional code in sequence;
when the pixel matrix data value of the two-dimensional code is 1, the terminal draws the read pixel matrix data of the two-dimensional code into the printer DC by calling a SetPixel function;
and when the pixel point matrix data value of the two-dimensional code is 0, the terminal does not process the pixel point matrix data value.
Preferably, the printer outputting the EMF image superimposed with the two-dimensional code includes one of:
the two-dimensional code is superposed at the upper left position of the EMF image;
the two-dimensional code is superposed at the upper right position of the EMF image;
the two-dimensional code is superposed at the lower left position of the EMF image;
the two-dimensional code is superimposed at a lower right position of the EMF image.
According to an embodiment of the present invention, there is provided a processing apparatus for printing a document, including:
the system comprises a drawing module, a printer device context module and a data processing module, wherein the drawing module is used for drawing an enhanced metafile EMF image to be printed into a printer device context DC for drawing printer output by calling a PlayEnhMetaFile function, and drawing pre-stored pixel point matrix data of a two-dimensional code for being superposed in the EMF image into the printer DC by calling a SetPrxel function;
and the printing output module is used for transmitting the EMF image drawn in the printer DC and the pixel point matrix data of the two-dimensional code to a printer for printing by calling an EndPage function so that the printer can output the EMF image superimposed with the two-dimensional code.
Preferably, the method further comprises the following steps:
the generating and storing module is used for encoding the content information character string to be contained in the two-dimensional code by using a QR encoding rule, and generating and storing pixel point matrix data of the two-dimensional code which is used for being superposed in the EMF image;
and the numerical value of each point of the two-dimensional code pixel dot matrix is 1 or 0.
Preferably, the method further comprises the following steps:
the judging module is used for judging whether the printed file is an EMF format file before the file is printed, and converting the file to be printed into the EMF format file if the printed file is judged not to be the EMF format file.
Preferably, the drawing module is specifically configured to read each pixel matrix data of the two-dimensional code in sequence, when the pixel matrix data value of the two-dimensional code is 1, draw the read pixel matrix data of the two-dimensional code into the printer DC by calling a SetPixel function, and when the pixel matrix data value of the two-dimensional code is 0, do not perform processing.
Preferably, the printer in the printout module outputting the EMF image superimposed with the two-dimensional code comprises one of:
the two-dimensional code is superposed at the upper left position of the EMF image;
the two-dimensional code is superposed at the upper right position of the EMF image;
the two-dimensional code is superposed at the lower left position of the EMF image;
the two-dimensional code is superimposed at a lower right position of the EMF image.
According to the scheme provided by the embodiment of the invention, the following effects can be brought:
1) EMF is used to keep the accuracy of the graph without distortion, and the EMF file is much smaller in size compared to the bmp file. For a network printer, the printing content is transmitted to the printer through a network, and the EMF file format has small file volume, so that a large amount of network bandwidth is saved, and network congestion possibly occurring in large-batch printing is reduced.
2) In the large-batch printing operation that needs to embed the two-dimensional code, use EMF file to print, can reduce the consumption of printing in-process printer self memory, can accelerate the speed of printer output paper, greatly promoted the efficiency of adding the two-dimensional code and printing.
Drawings
FIG. 1 is a flowchart of a method for processing a print file according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a device for processing a print document according to an embodiment of the present invention
FIG. 3 is a schematic diagram of a processing system for printing a document according to an embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, and it should be understood that the preferred embodiments described below are only for the purpose of illustrating and explaining the present invention, and are not to be construed as limiting the present invention.
Fig. 1 is a flowchart of a processing method for printing a file according to an embodiment of the present invention, as shown in fig. 1, including:
step S101: the terminal draws an enhanced metafile EMF image to be printed into a printer device context DC for drawing printer output by calling a PlayEnhMetaFile function;
step S102: the terminal draws pre-stored pixel point matrix data of the two-dimensional code for being superposed in the EMF image into the printer DC by calling a SetPixel function;
step S103: and the terminal transmits the EMF image drawn in the printer DC and the pixel point matrix data of the two-dimensional code to a printer for printing by calling an EndPage function, so that the printer outputs the EMF image superposed with the two-dimensional code.
The pixel point matrix data of the two-dimensional code pre-stored by the terminal and used for being superposed in the EMF image comprises the following steps: the terminal encodes the content information character string to be contained in the two-dimensional code by using a QR (quick response) encoding rule, and generates and stores pixel point matrix data of the two-dimensional code which is used for being superposed in an EMF (electromagnetic field effect) image; and the numerical value of each point of the two-dimensional code pixel dot matrix is 1 or 0.
The embodiment of the invention also comprises the following steps: before the terminal prints a file, judging whether the printed file is an EMF format file; and if the printed file is judged not to be the EMF format file, the terminal converts the file to be printed into the EMF format file.
Wherein, the terminal draws pre-stored pixel matrix data of the two-dimensional code for superimposing in the EMF image into the printer DC by calling a SetPixel function, including: the terminal reads matrix data of each pixel point of the two-dimensional code in sequence; when the pixel matrix data value of the two-dimensional code is 1, the terminal draws the read pixel matrix data of the two-dimensional code into the printer DC by calling a SetPixel function; and when the pixel point matrix data value of the two-dimensional code is 0, the terminal does not process the pixel point matrix data value.
Specifically, the printer outputs the EMF image superimposed with the two-dimensional code including one of: the two-dimensional code is superposed at the upper left position of the EMF image; the two-dimensional code is superposed at the upper right position of the EMF image; the two-dimensional code is superposed at the lower left position of the EMF image; the two-dimensional code is superimposed at a lower right position of the EMF image.
Fig. 2 is a schematic diagram of a processing apparatus for printing a document according to an embodiment of the present invention, and as shown in fig. 2, the processing apparatus includes: the drawing module 201 is used for drawing the enhanced metafile EMF image to be printed into a printer device context DC for drawing printer output by calling a PlayEnhMetaFile function, and drawing the pre-stored pixel point matrix data of the two-dimensional code for being superposed in the EMF image into the printer DC by calling a SetPixel function; a printout module 202, configured to transfer the EMF image drawn in the printer DC and the pixel matrix data of the two-dimensional code to a printer for printing by calling an EndPage function, so that the printer outputs the EMF image on which the two-dimensional code is superimposed.
The embodiment of the invention also comprises the following steps: the generating and storing module 203 is configured to encode the content information character string to be included in the two-dimensional code by using a QR coding rule, and generate and store pixel matrix data of the two-dimensional code to be superimposed on the EMF image; and the numerical value of each point of the two-dimensional code pixel dot matrix is 1 or 0.
The embodiment of the invention also comprises the following steps: the determining module 204 is configured to determine, before printing a file, whether the printed file is an EMF format file, and if it is determined that the printed file is not the EMF format file, convert the file to be printed into the EMF format file.
The drawing module 201 is specifically configured to read each pixel matrix data of the two-dimensional code in sequence, when the pixel matrix data value of the two-dimensional code is 1, draw the read pixel matrix data of the two-dimensional code into the printer DC by calling a SetPixel function, and when the pixel matrix data value of the two-dimensional code is 0, do not perform processing.
Wherein the printer in the printout module 202 outputs the EMF image superimposed with the two-dimensional code, and the EMF image includes one of: the two-dimensional code is superposed at the upper left position of the EMF image; the two-dimensional code is superposed at the upper right position of the EMF image; the two-dimensional code is superposed at the lower left position of the EMF image; the two-dimensional code is superimposed at a lower right position of the EMF image.
The embodiment of the invention directly draws the two-dimensional code on the printer DC by using a windows GDI (Graphics Device Interface) Interface function. GDI is responsible for the information exchange between operating systems and drawing programs, handling the graphical output of all Windows programs, and provides a series of functions that applications can use to generate graphical output results on displays, printers, etc.
Fig. 3 is a schematic diagram of a processing system for printing a file according to an embodiment of the present invention, as shown in fig. 3, a file format used for printing and outputting is an EMF file format, an EMF occupied space is small, and when printing on a network, a smaller EMF format can save a bandwidth, a transmission speed is high, and a printing efficiency is high, which specifically includes:
step 1: when a print job is performed using an EMF file, the terminal program calls the windows API printer DC to acquire the printer device context DC.
DC is a Windows GDI data structure that contains the rendering properties of a device. The image draw call is by means of a device context object. The device context is device independent, so it can be used to draw both screens and printer output. All operations in the following flow rely on the printer DC to interact with the printer driver to complete the entire printing process.
Step 2: the terminal program starts a print job;
the StartDoc function (instruction function of a print job) is first called with the printer DC as a parameter to notify the printer driver that a print job is ready to start.
And step 3: then, a StartPage function (print page function) is called to notify the printer driver of the start of preparation for receiving print data with the printer DC as a parameter.
And 4, step 4: the terminal program then renders the EMF image to printer DC; by calling the playenhmmetafile function, the EMF image to be printed is rendered in the designated printer DC, again with the printer DC as a parameter.
And 5: before the two-dimensional code is drawn, the terminal program uses a QR two-dimensional code coding rule to code a content information character string to be contained in the two-dimensional code, and two-dimensional pixel matrix data is generated, wherein each data value of a pixel matrix is 0 or 1.
Step 6: drawing the two-dimensional code on a printer DC;
and (3) sequentially drawing each pixel point represented by the two-dimensional pixel matrix at the coordinate position set by the program by calling the windows GDI function SetPixel for multiple times, and if the matrix point data is 1, drawing a black pixel point, and if the matrix point data is 0, not drawing, so that the whole two-dimensional code is drawn on the printer DC. The two-dimensional code is superposed on the EMF image; thus, when output by the printer, the two-dimensional code is printed on the output paper along with the EMF image.
And 7: finally, the printer is informed to output the prepared data to paper;
and printing the current page by calling an EndPage function, and superposing the two-dimensional code image drawn just now on the output printing page to output paper. Repeating the above steps, and starting to continue printing the next page.
And 8: and finishing printing all pages, and finishing all printing jobs by the terminal program.
According to the scheme provided by the embodiment of the invention, the following effects can be brought:
1) the EMF (enhanced MetaFile) enhanced metafile format is used, and the EMF file is much smaller in size compared with a bmp file under the condition that the accuracy of the graph is kept and the distortion is not generated. For a network printer, the printing content is transmitted to the printer through a network, and the EMF file format has small file volume, so that a large amount of network bandwidth is saved, and network congestion possibly occurring in large-batch printing is reduced.
2) In the large-batch printing operation that needs to embed the two-dimensional code, use EMF file to print, can reduce the consumption of printing in-process printer self memory, can accelerate the speed of printer output paper, greatly promoted the efficiency of adding the two-dimensional code and printing.
Although the present invention has been described in detail hereinabove, the present invention is not limited thereto, and various modifications can be made by those skilled in the art in light of the principle of the present invention. Thus, modifications made in accordance with the principles of the present invention should be understood to fall within the scope of the present invention.

Claims (10)

1. A method of processing a printed document, comprising:
the terminal draws an enhanced metafile EMF image to be printed into a printer device context DC for drawing printer output by calling a PlayEnhMetaFile function;
the terminal draws pre-stored pixel point matrix data of the two-dimensional code for being superposed in the EMF image into the printer DC by calling a SetPixel function;
and the terminal transmits the EMF image drawn in the printer DC and the pixel point matrix data of the two-dimensional code to a printer for printing by calling an EndPage function, so that the printer outputs the EMF image superposed with the two-dimensional code.
2. The method according to claim 1, wherein the pixel matrix data of the two-dimensional code pre-stored by the terminal for superimposing on the EMF image comprises:
the terminal encodes the content information character string to be contained in the two-dimensional code by using a QR (quick response) encoding rule, and generates and stores pixel point matrix data of the two-dimensional code which is used for being superposed in an EMF (electromagnetic field effect) image;
and the numerical value of each point of the two-dimensional code pixel dot matrix is 1 or 0.
3. The method of claim 1, further comprising:
before the terminal prints a file, judging whether the printed file is an EMF format file;
and if the printed file is judged not to be the EMF format file, the terminal converts the file to be printed into the EMF format file.
4. The method of claim 2, wherein the terminal drawing pre-stored pixel matrix data of a two-dimensional code for superimposition in an EMF image into the printer DC by calling a SetPixel function comprises:
the terminal reads matrix data of each pixel point of the two-dimensional code in sequence;
when the pixel matrix data value of the two-dimensional code is 1, the terminal draws the read pixel matrix data of the two-dimensional code into the printer DC by calling a SetPixel function;
and when the pixel point matrix data value of the two-dimensional code is 0, the terminal does not process the pixel point matrix data value.
5. The method of claim 1, wherein the printer outputting the EMF image superimposed with the two-dimensional code comprises one of:
the two-dimensional code is superposed at the upper left position of the EMF image;
the two-dimensional code is superposed at the upper right position of the EMF image;
the two-dimensional code is superposed at the lower left position of the EMF image;
the two-dimensional code is superimposed at a lower right position of the EMF image.
6. A processing apparatus for printing a document, comprising:
the system comprises a drawing module, a printer device context module and a data processing module, wherein the drawing module is used for drawing an enhanced metafile EMF image to be printed into a printer device context DC for drawing printer output by calling a PlayEnhMetaFile function, and drawing pre-stored pixel point matrix data of a two-dimensional code for being superposed in the EMF image into the printer DC by calling a SetPrxel function;
and the printing output module is used for transmitting the EMF image drawn in the printer DC and the pixel point matrix data of the two-dimensional code to a printer for printing by calling an EndPage function so that the printer can output the EMF image superimposed with the two-dimensional code.
7. The apparatus of claim 6, further comprising:
the generating and storing module is used for encoding the content information character string to be contained in the two-dimensional code by using a QR encoding rule, and generating and storing pixel point matrix data of the two-dimensional code which is used for being superposed in the EMF image;
and the numerical value of each point of the two-dimensional code pixel dot matrix is 1 or 0.
8. The apparatus of claim 6, further comprising:
the judging module is used for judging whether the printed file is an EMF format file before the file is printed, and converting the file to be printed into the EMF format file if the printed file is judged not to be the EMF format file.
9. The apparatus according to claim 7, wherein the rendering module is specifically configured to sequentially read each pixel matrix data of the two-dimensional code, and when the pixel matrix data value of the two-dimensional code is 1, render the read pixel matrix data of the two-dimensional code into the printer DC by calling a SetPixel function, and when the pixel matrix data value of the two-dimensional code is 0, do not perform processing.
10. The apparatus of claim 6, wherein a printer in the printout module outputting the EMF image superimposed with the two-dimensional code comprises one of:
the two-dimensional code is superposed at the upper left position of the EMF image;
the two-dimensional code is superposed at the upper right position of the EMF image;
the two-dimensional code is superposed at the lower left position of the EMF image;
the two-dimensional code is superimposed at a lower right position of the EMF image.
CN201811631890.0A 2018-12-29 2018-12-29 Processing method and device for printed file Pending CN111381781A (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103500296A (en) * 2013-09-29 2014-01-08 北京溯源鸿业科技有限公司 Inlaying method and device of digital watermarks in text documents
CN106951199A (en) * 2017-03-03 2017-07-14 深圳卡易科技股份有限公司 A kind of docking technique based on printing driving layer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103500296A (en) * 2013-09-29 2014-01-08 北京溯源鸿业科技有限公司 Inlaying method and device of digital watermarks in text documents
CN106951199A (en) * 2017-03-03 2017-07-14 深圳卡易科技股份有限公司 A kind of docking technique based on printing driving layer

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Application publication date: 20200707