Aspose.Slides for Java 19.4 Release Notes

This page contains release notes for Aspose.Slides for Java 19.4

Key	Summary	Category
SLIDESNET-41018	Supporting of external Excel workbooks	Feature
SLIDESNET-40897	Support for OpenDocument encryption	Feature
SLIDESNET-40917	The rendition to PDF format occupies too much RAM memory	Enhancement
SLIDESNET-40938	PDF text is not searchable when exported to PDF with Notes	Enhancement
SLIDESJAVA-37405	Transparent Image looses transparency while converted to PDF	Bug
SLIDESJAVA-37564	Exception on generating SVG	Bug
SLIDESJAVA-33319	Shadow of shape is not visible in PDF and in thumbnails when export from PPTX	Bug
SLIDESJAVA-37587	Exception on cloning	Bug
SLIDESJAVA-37563	Exception on loading PPTX	Bug
SLIDESJAVA-37473	ODP file not properly converted to PPTX	Bug
SLIDESJAVA-37565	Crop-circle image is not properly written as SVG	Bug
SLIDESJAVA-37419	Exception on converting large PPTX file to PDF	Bug
SLIDESJAVA-37596	Font spacing is incorrect in embedded word documents	Bug
SLIDESJAVA-37470	Thumbnails are not properly generated	Bug

Public API Changes

Support of external workbooks as a data source for charts has been added - JAVA

Since version 19.4 Aspose.Slides supports external workbooks as a data source for charts.

IResourceLoadingCallback can be used to manage external workbook loading. See New IResourceLoadingCallback interface has been added

1. Chart data in external workbooks can be edited the same way it works for internal workbooks. If external workbook can’t be loaded an exception is thrown.

Presentation pres = new Presentation("presentation.pptx");
try
{
    IChart chart = (IChart) pres.getSlides().get_Item(0).getShapes().get_Item(0);
    ChartData chartData = (ChartData)chart.getChartData();

    assert(chartData.getDataSourceType() == ChartDataSourceType.ExternalWorkbook);

    chartData.getSeries().get_Item(0).getDataPoints().get_Item(0).getValue().getAsCell().setValue(100);
    pres.save(outPptxFileName, SaveFormat.Pptx);
}
finally {
    pres.dispose();
}

2. An external workbook can be assigned to a chart as a data source. For this purpose IChartData.setExternalWorkbook(String workbookPath) method has been added.

setExternalWorkbook() method can be also used to update a path to the external workbook if it has been moved. Workbooks placed on remote resources unavailable for data editing but still can be assigned as an external data source. If the relative path was provided for an external workbook, it converts to full path automatically.

Presentation pres = new Presentation();
try
{
    IChart chart = pres.getSlides().get_Item(0).getShapes().addChart(ChartType.Pie, 50, 50, 400, 600, false);
    IChartData chartData = chart.getChartData();

    assert(chartData.getDataSourceType() == ChartDataSourceType.ExternalWorkbook);

    chartData.setExternalWorkbook("externalWorkbook.xlsx");

    assert(chartData.getDataSourceType() == ChartDataSourceType.ExternalWorkbook);

    chartData.getSeries().add(chartData.getChartDataWorkbook().getCell(0, "B1"), ChartType.Pie);
    chartData.getSeries().get_Item(0).getDataPoints().addDataPointForPieSeries(chartData.getChartDataWorkbook().getCell(0, "B2"));
    chartData.getSeries().get_Item(0).getDataPoints().addDataPointForPieSeries(chartData.getChartDataWorkbook().getCell(0, "B3"));
    chartData.getSeries().get_Item(0).getDataPoints().addDataPointForPieSeries(chartData.getChartDataWorkbook().getCell(0, "B4"));

    chartData.getCategories().add(chartData.getChartDataWorkbook().getCell(0, "A2"));
    chartData.getCategories().add(chartData.getChartDataWorkbook().getCell(0, "A3"));
    chartData.getCategories().add(chartData.getChartDataWorkbook().getCell(0, "A4"));
    pres.save("Presentation.pptx", SaveFormat.Pptx);
}
finally {
    pres.dispose();
}

3. Combination of methods IChartData.readWorkbookStream() and IChartData.setExternalWorkbook() can be used to create an external workbook from scratch or to make an internal workbook external.

Presentation pres = new Presentation("presentaion.pptx");
try
{
    String externalWbPath = "externalWorkbook.pptx";

    IChart chart = pres.getSlides().get_Item(0).getShapes().addChart(ChartType.Pie, 50, 50, 400, 600);

    java.io.File file = new File(externalWbPath);
    if (file.exists())
        file.delete();

    byte[] worbookData = chart.getChartData().readWorkbookStream();
    FileOutputStream outputStream = new FileOutputStream(file);
    outputStream.write(worbookData);
    outputStream.close();

    chart.getChartData().setExternalWorkbook(externalWbPath);
} catch (FileNotFoundException e) {
    e.printStackTrace();
} catch (IOException e) {
    e.printStackTrace();
} finally {
    pres.dispose();
}