Aspose.Slides for Java 19.12 Release Notes

Public API Changes

Data Points of Treemap and Sunburst Chart

Among other types of PowerPoint charts, there are two “hierarchical” types - Treemap and Sunburst chart (also known as Sunburst Graph, Sunburst Diagram, Radial Chart, Radial Graph or Multi Level Pie Chart). These charts display hierarchical data organized as a tree - from leaves to the top of the branch. Leaves are defined by the series data points, and each subsequent nested grouping level defined by the corresponding category. Aspose.Slides for Java allows to format data points of Sunburst Chart and Treemap in Java.

Here is a Sunburst Chart, where data in Series1 column define the leaf nodes, while other columns define hierarchical datapoints:

Let’s start with adding a new Sunburst chart to the presentation:

Presentation pres = new Presentation();
try
{
   IChart chart = pres.getSlides().get_Item(0).getShapes().addChart(ChartType.Sunburst, 100, 100, 450, 400);
   // ...
} finally {
   if (pres != null) pres.dispose();
}

Read more about Creating Sunburst Chart.

If there is a need to format data points of the chart, we should use the following:

IChartDataPointLevelsManager, IChartDataPointLevel  classes and IChartDataPoint. getDataPointLevels()  method provide access to format data points of Treemap and Sunburst charts. IChartDataPointLevelsManager is used for accessing multi-level categories - it represents the container of  IChartDataPointLevel objects. Basically it is a wrapper for IChartCategoryLevelsManager with the properties added specifically for data points. IChartDataPointLevel class has two methods: getFormat() and getLabel() which provide access to corresponding settings.

Show Data Point Value

Show value of “Leaf 4” data point:

IChartDataPointCollection dataPoints = chart.getChartData().getSeries().get_Item(0).getDataPoints();
dataPoints.get_Item(3).getDataPointLevels().get_Item(0).getLabel().getDataLabelFormat().setShowValue(true);

Set Data Point label and its color

Set “Branch 1” data label to show a series name (“Series1”) instead of the category name. Then set the text color to yellow:

IDataLabel branch1Label = dataPoints.get_Item(0).getDataPointLevels().get_Item(2).getLabel();
branch1Label.getDataLabelFormat().setShowCategoryName(false);
branch1Label.getDataLabelFormat().setShowSeriesName(true);
branch1Label.getDataLabelFormat().getTextFormat().getPortionFormat().getFillFormat().setFillType(FillType.Solid);
branch1Label.getDataLabelFormat().getTextFormat().getPortionFormat().getFillFormat().getSolidFillColor().setColor(Color.YELLOW);

Set Data Point Branch Color

Change color of “Steam 4” branch:

IFormat steam4Format = dataPoints.get_Item(9).getDataPointLevels().get_Item(1).getFormat();
steam4Format.getFill().setFillType(FillType.Solid);
steam4Format.getFill().getSolidFillColor().setColor(new Color(0, 176, 240, 255));

getAccessPermissions() and setAccessPermissions() methods have been added to IPdfOptions interface and PdfOptions class

getAccessPermissions() and setAccessPermissions() methods have been added to IPdfOptions interface and PdfOptions class. All possible values of this property are defined in the PdfAccessPermissions class. These values allow you to restrict access rights to a PDF document such as printing, modify the contents, copy text and graphics, add or modify text annotations, create or modify interactive form fields, extract text and graphics in support of accessibility to users with disabilities, create bookmarks, manipulate pages, etc. The values of this enumeration may be combined.

Example

The example below demonstrates how to set access permissions to a PDF document only for printing in high quality.

PdfOptions pdfOptions = new PdfOptions();
pdfOptions.setPassword("my_password");
pdfOptions.setAccessPermissions(PdfAccessPermissions.PrintDocument | PdfAccessPermissions.HighQualityPrint);
Presentation presentation = new Presentation();
try {
   presentation.save(pdfFilePath, SaveFormat.Pdf, pdfOptions);
} finally {
   if (presentation != null) presentation.dispose();
}

ISlideCollection.addClone() method has been added

addClone() method has been added to ISlideCollection interface and SlideCollection class. This method allows adding a slide clone into a specified section.

Method declaration:

/**
 * <p>
 * Adds a copy of a specified slide to the end of the specified section.
 * </p>
 * @return New slide.
 * @param sourceSlide Slide to clone.
 * @param section Section for a new slide.
 * <pre>
 * IPresentation presentation = new Presentation();
 * try
 * {
 *     presentation.getSlides().get_Item(0).getShapes().addAutoShape(ShapeType.Rectangle, 200, 50, 300, 100);
 *     presentation.getSections().addSection("Section 1", presentation.getSlides().get_Item(0));
 *     
 *     ISection section2 = presentation.getSections().appendEmptySection("Section 2");
 *     presentation.getSlides().addClone(presentation.getSlides().get_Item(0), section2);
 *     
 *     // Now the second section contains a copy of the first slide.
 * } finally {
 *     if (presentation != null) presentation.dispose();
 * }
 * </pre>
 */
public ISlide addClone(ISlide sourceSlide, ISection section);