CN110956024A - Method for automatically drawing custom graph in PDF (Portable document Format) based on WEB - Google Patents
Method for automatically drawing custom graph in PDF (Portable document Format) based on WEB Download PDFInfo
- Publication number
- CN110956024A CN110956024A CN201811043451.8A CN201811043451A CN110956024A CN 110956024 A CN110956024 A CN 110956024A CN 201811043451 A CN201811043451 A CN 201811043451A CN 110956024 A CN110956024 A CN 110956024A
- Authority
- CN
- China
- Prior art keywords
- canvas
- painting brush
- creating
- automatically drawing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/30—Creation or generation of source code
- G06F8/38—Creation or generation of source code for implementing user interfaces
Abstract
The invention relates to the technical field of software development and application, in particular to a method for automatically drawing a custom graph in PDF. The method comprises the following steps: 1. PDF, a package of operation PDF documents is referenced; 2. creating an empty PDF document object; 3. arranging a painting brush and a painting brush; 4. creating a canvas, drawing a graph and storing the canvas; 5. the PDF document is saved and opened. The invention solves the problem of automatically drawing the user-defined graph in PDF without the help of a third party tool, and can be widely applied to WEB application and development.
Description
Technical Field
The invention relates to the technical field of software development and application, in particular to a method for automatically drawing a custom graph in PDF.
Background
PDF (short for Portable Document Format) is a file Format developed by adobes systems for file exchange in a manner independent of application programs, operating systems, and hardware. The PDF file format may encapsulate text, fonts, formats, colors, and device and resolution independent graphical images, etc. in one file. The format file can also contain electronic information such as hypertext links, sound, dynamic images and the like, supports a special file, and has high integration level and high safety and reliability.
PDF documents are usually read-only and cannot be modified, and they are basically converted from other editable documents by tools. In practical application, a PDF document often needs to be directly generated through text content and graphic variables, the text content can be directly written in, but the graphics need to be automatically drawn when being generated. By referring to spiral.PDF in the program, the PDF document is directly read and written in the memory without using a third-party tool, and the graph is drawn, so that the problem of automatically drawing a user-defined graph in PDF without using the third-party tool is solved, and the method can be widely applied to software development and application processes.
Disclosure of Invention
The invention solves the technical problem of providing a method for automatically drawing a user-defined graph in PDF; the problem of need not to draw user-defined figure in PDF automatically with the help of third party's instrument is solved.
The technical scheme for solving the technical problems is as follows:
the method comprises the following steps:
step one, quoting a program package spiral. PDF of an operation PDF document;
step two, creating an empty PDF document object;
thirdly, setting a painting brush and a painting brush;
step four, creating a canvas, drawing a graph and storing the canvas;
and step five, saving and opening the PDF document.
In the method for automatically drawing the user-defined graph in the PDF, in the first step, a program package of a PDF document is referred to and operated in a project program, and the program package is generated and compiled.
In the second step, an empty PDF document object is created in the memory, and a PDF page object is created according to the PDF object.
And in the third step, creating a painting brush, a painting brush object and transparency attributes according to the predefined colors, creating different painting brush objects according to different colors, and setting different transparency attributes according to different transparencies.
And in the fourth step and the fifth step, a canvas is created, pictures are drawn on the canvas and the canvas is stored according to the paintbrushes, the transparency, the coordinate values and the attributes of different shapes, and PDF documents are stored and opened after drawing is finished.
The problem of automatically drawing the user-defined graph in the PDF without the help of a third-party tool is solved, and the method can be widely applied to software development and application processes.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a flow chart of the method of the present invention.
Detailed Description
As shown in fig. 1, the present invention specifically comprises the following steps:
step one, quoting a program package spiral. PDF of an operation PDF document;
step two, creating an empty PDF document object;
thirdly, setting a painting brush and a painting brush;
step four, creating a canvas, drawing a graph and storing the canvas;
and step five, saving and opening the PDF document.
In the first step, a package of a pdf document is referred to in the project program, generated and compiled.
In the second step, an empty PDF document object is created in the memory, and a PDF page object is created according to the PDF object.
New PDF document
PdfDocument doc = new PdfDocument();
PdfPageBase page = doc.Pages.Add();
And in the third step, creating a painting brush, a painting brush object and transparency attributes according to the predefined colors, creating different painting brush objects according to different colors, and setting different transparency attributes according to different transparencies.
V/instantiate brushes and brushes 1, 2
PdfPen pen = new PdfPen(Color.DeepSkyBlue, 0.02f);
PdfBrush brush1 = new PdfSolidBrush(Color.PaleGreen);
PdfBrush brush2 = new PdfSolidBrush(Color.Bisque);
Setting the basic color transparency to 1
PdfSeparationColor color1 = new PdfSeparationColor(cs1, 1f);
PdfSeparationColor color2 = new PdfSeparationColor (cs2, 1f), PdfSeparationColor 3 = new PdfSeparationColor (cs3, 1f), in the fourth step and the fifth step, creating a canvas, drawing a picture on the canvas and storing the canvas according to a brush, transparency, coordinate values and attributes of different shapes, and storing and opening a PDF document after drawing is finished.
Drawing in graphics and text and coloring
page.Canvas.DrawPie(brush1, 10, 30, 60, 60, 360, 360);
page.Canvas.DrawPie(brush2, 10, 120, 60, 60, 360, 360);page.Canvas.DrawPie(brush3, 10, 210, 60, 60, 360, 360);
Canvas & drawstring ("transparency =1.0", new pdftruetypefent (new Font ("arial unicode MS", 10f), true), brush1, new PointF (16, 100));
setting the basic color transparency to 0.5, and drawing pictures and characters
color1 = new PdfSeparationColor(cs1, 0.5f);
brush1 = new PdfSolidBrush(color1);
page.Canvas.DrawPie(brush1, 80, 30, 60, 60, 360, 360);
color2 = new PdfSeparationColor(cs2, 0.5f);
brush2 = new PdfSolidBrush(color2);
page.Canvas.DrawPie(brush2, 80, 120, 60, 60, 360, 360); color3 = newPdfSeparationColor(cs3, 0.5f);
brush3 = new PdfSolidBrush(color3);
page canvas. draw pie (brush3, 80, 210, 60, 60, 360, 360); page canvas. draw string ("transparency =0.5", new pdftruetypefent (new Font ("arial unicode MS", 10f), true), brush1, new PointF (86, 100));
// save and open document
doc.SaveToFile("xxx123.pdf");
System.Diagnostics.Process.Start("xxx123.pdf")。
Claims (5)
1. A method for automatically drawing a custom graph in PDF is characterized in that: the method comprises the following steps:
step one, quoting a program package spiral. PDF of an operation PDF document;
step two, creating an empty PDF document object;
thirdly, setting a painting brush and a painting brush;
step four, creating a canvas, drawing a graph and storing the canvas;
and step five, saving and opening the PDF document.
2. The method for automatically drawing the custom graphics in the PDF according to claim 1, wherein: in the first step, a package of a pdf document is referred to in the project program, generated and compiled.
3. The method for automatically drawing the custom graphics in the PDF according to claim 1, wherein: in the second step, an empty PDF document object is created in the memory, and a PDF page object is created according to the PDF object.
4. The method for automatically drawing the custom graphics in the PDF according to claim 1, wherein: and in the third step, creating a painting brush, a painting brush object and transparency attributes according to the predefined colors, creating different painting brush objects according to different colors, and setting different transparency attributes according to different transparencies.
5. The method for automatically drawing the custom graphics in the PDF according to claim 1, wherein: and in the fourth step and the fifth step, a canvas is created, pictures are drawn on the canvas and the canvas is stored according to the paintbrushes, the transparency, the coordinate values and the attributes of different shapes, and PDF documents are stored and opened after drawing is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811043451.8A CN110956024A (en) | 2018-09-07 | 2018-09-07 | Method for automatically drawing custom graph in PDF (Portable document Format) based on WEB |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811043451.8A CN110956024A (en) | 2018-09-07 | 2018-09-07 | Method for automatically drawing custom graph in PDF (Portable document Format) based on WEB |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110956024A true CN110956024A (en) | 2020-04-03 |
Family
ID=69962106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811043451.8A Pending CN110956024A (en) | 2018-09-07 | 2018-09-07 | Method for automatically drawing custom graph in PDF (Portable document Format) based on WEB |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110956024A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1445691A (en) * | 2003-04-29 | 2003-10-01 | 吴晶 | Method for drawing on or sending to bulletins containing graphics bulletin boards |
| CN101833744A (en) * | 2010-03-29 | 2010-09-15 | 广东威创视讯科技股份有限公司 | Method and device for efficiently drawing graphics |
| CN105094835A (en) * | 2015-08-11 | 2015-11-25 | 金蝶软件（中国）有限公司 | Graph drawing method and device |
| JP2017151913A (en) * | 2016-02-26 | 2017-08-31 | 株式会社スカイコム | Pdf file management system, pdf file management server, pdf file data acquiring server, pdf file management method, pdf file data acquiring method, pdf file management program, and pdf file data acquiring program |
-
2018
- 2018-09-07 CN CN201811043451.8A patent/CN110956024A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1445691A (en) * | 2003-04-29 | 2003-10-01 | 吴晶 | Method for drawing on or sending to bulletins containing graphics bulletin boards |
| CN101833744A (en) * | 2010-03-29 | 2010-09-15 | 广东威创视讯科技股份有限公司 | Method and device for efficiently drawing graphics |
| CN105094835A (en) * | 2015-08-11 | 2015-11-25 | 金蝶软件（中国）有限公司 | Graph drawing method and device |
| JP2017151913A (en) * | 2016-02-26 | 2017-08-31 | 株式会社スカイコム | Pdf file management system, pdf file management server, pdf file data acquiring server, pdf file management method, pdf file data acquiring method, pdf file management program, and pdf file data acquiring program |
Non-Patent Citations (1)
| Title |
|---|
| OFFICE文档开发: "C#如何在PDF中绘制图形", 《HTTPS://JINGYAN.BAIDU.COM/ARTICLE/0964ECA25844628285F536C7.HTML》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6507472B2 (en) | Processing method, processing system and computer program | |
| AU2005202722B2 (en) | Common charting using shapes | |
| WO2020192463A1 (en) | Display method and apparatus | |
| US7730399B2 (en) | Journal file reader | |
| US8832548B2 (en) | System and method for selective control of zoom adjustments in an electronic publication | |
| CN100356372C (en) | Generating method of computer format document and opening method | |
| CN100543725C (en) | A kind of method for the E-seal location | |
| US9141596B2 (en) | System and method for processing markup language templates from partial input data | |
| CN111241454A (en) | Method, system and device for generating webpage code | |
| US8243317B2 (en) | Hierarchical arrangement for spooling job data | |
| CN110705237B (en) | Automatic document generation method, data processing device and storage medium | |
| CN110096275B (en) | Page processing method and device | |
| EP1126379A1 (en) | Conversion of directly assigned document format attributes | |
| CN106708506A (en) | Method and device for optimizing starting speed of Android applications visually | |
| CN103309849B (en) | A kind of docx document creation based on OpenXML and amending method | |
| JP6228106B2 (en) | Obfuscating page description language output to prevent conversion to editable format | |
| US8988692B2 (en) | Information processing apparatus, information processing method, and storage medium | |
| CN110968294A (en) | Business domain model establishing system and method | |
| US8365066B2 (en) | Systems and methods for processing markup language specified spreadsheet styles | |
| US20110197117A1 (en) | Systems and methods for processing color information in spreadsheets | |
| US7757165B1 (en) | Method and system for deriving and matching local formatting in an electronic document | |
| CN113867694A (en) | Method and system for intelligently generating front-end code | |
| CN110956024A (en) | Method for automatically drawing custom graph in PDF (Portable document Format) based on WEB | |
| US20140198111A1 (en) | Method and system for preserving a graphics file | |
| US7154511B2 (en) | Fast rendering of ink |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200403 |