Java API to Generate & Convert Visio Diagrams

Getting Started with Aspose.Diagram for Java

The recommend way to install Aspose.Diagram for Java is via Maven repository. You can easily use Aspose.Diagram for Java API directly in your Maven Projects with simple configurations.

 //First you need to specify Aspose Repository configuration / location in your Maven pom.xml as follows:

<repositories>
	<repository>
	<id>AsposeJavaAPI</id>
	<name>Aspose Java API</name>
	<url>https://releases.aspose.com/java/repo/</url>
	</repository>
</repositories>

//Then define Aspose.Diagram for Java API dependency in your pom.xml as follows:

<dependencies>
	<dependency>
	<groupId>com.aspose</groupId>
	<artifactId>aspose-diagram</artifactId>
	<version>19.9</version>
    <classifier>jdk16</classifier>
	</dependency>
</dependencies>

Visio Diagrams Generation via Java API

Aspose.Diagram for Java has included complete supports for generating Microsoft Visio diagrams inside Java applications without Microsoft Office Automation. To create a new diagram from the scratch you need to create a new Visio documents and add shapes as well as connectors to build up the diagram. The library supports various Layout approaches helping developers to quickly and smoothly create the diagrams. The library fully support working with VBA projects and allows developers to modify their VBA module code automatically with just a couple of lines of java code. Developers can also easily retrieve Visio connectors and font information. The library also gives users the control to stop conversion or loading of diagrams using InterruptMonitor when it is taking too long.

string dataDir = RunExamples.GetDataDir_LoadSaveConvert();

// Initialize a Diagram class
Diagram diagram = new Diagram();

// Save diagram in the VSDX format
diagram.Save(dataDir + "CreateNewVisio_out.vsdx", SaveFileFormat.VSDX);

Visio Diagrams Conversion inside Java Apps

Aspose.Diagram for Java has included complete support for loading and converting Microsoft Visio diagrams to a wide range of file formats, including PDF, XPS HTML, EMF, SWF, XAML, JPEG, PNG, BMP, TIFF, SVG, EMF, and many more. The conversion process is simple and straightforward, and you can use the same code to convert multiple diagrams in batch mode. The library also supports the conversion of other file formats to Visio diagrams. You can easily control the appearance and behavior of the converted diagrams. The library supports setting options such as page size, margins, and more, to ensure that your converted diagrams look exactly the way you want them to.

String dataDir = Utils.getDataDir(ExportToPDF.class);

// Call the diagram constructor to load diagram from a VSD file
Diagram diagram = new Diagram(dataDir + "ExportToPDF.vsd");

// Save as PDF file format
diagram.save(dataDir + "ExportToPDF_Out.pdf", SaveFileFormat.PDF);

Work with Pages in Visio Diagrams via Java API/h2>

Pages are the building blocks of a Visio diagram and are used to organize the shapes, lines, and other elements that make up a diagram. Aspose.Diagram for Java library enables software developers to easily create new pages, access existing pages, and manipulate the elements on a page. It allows accessing the shapes and elements on a page, and modifying their properties, such as size, position, and appearance. You can also add new shapes and elements to a page, and delete existing ones. It is also very easy to access and work with layers. The library allows users to easily create new layers, access existing layers, and modify the properties of layers, such as visibility and printing behavior.

How to Get a Page Object by Name from Visio Drawing via Java API

String dataDir = Utils.getDataDir(GetVisioPagebyName.class);     
// Call the diagram constructor to load diagram from a VSDX file
Diagram diagram = new Diagram(dataDir + "Drawing1.vsdx");

// Set page name
String pageName = "Flow 2";
// Get page object by name
Page page2 = diagram.getPages().getPage(pageName);

Manage Masters in Visio Diagrams via Java API

Aspose.Diagram for Java makes it easy for software developers to work with masters and retrieve information like ID and names of masters inside Java applications. Masters are pre-designed shapes that can be reused multiple times in a Visio diagram. By using masters, you can ensure that your diagrams are consistent and standardized, which can make it easier to maintain and update your diagrams over time. The library allows creating new masters, modify existing ones, or delete masters that you no longer need. It is also possible to access the shapes and elements within a master, which makes it possible to manipulate the master's appearance and behavior. The library also allows controlling the behavior of the shapes in a master, such as how they respond to events such as resizing, rotating, and moving.

String dataDir = Utils.getDataDir(GetMasterbyID.class);  
// Call the diagram constructor to load diagram from a VDX file
Diagram diagram = new Diagram(dataDir + "RetrieveMasterInfo.vdx");

// Set master id
int masterid = 2;
// Get master object by id
Master master = diagram.getMasters().getMaster(masterid);

System.out.println("Master ID : " + master.getID());
System.out.println("Master Name : " + master.getName());
System.out.println("Master Name : " + master.getUniqueID());