Aspose.Slides for .NET 20.11 Release Notes

Key Summary Category
SLIDESNET-42195 File corruption saving through Aspose.Slides Investigation
SLIDESNET-42128 Support for caching PPTX using Aspose.Slides Investigation
SLIDESNET-39938 Issue in generated result Investigation
SLIDESNET-42201 Ability to test presentation password to open Feature
SLIDESNET-42020 Support for Map type chart in Aspose.Slides Feature
SLIDESNET-38917 Ability to test presentation password to modify Feature
SLIDESNET-36008 Support to verify the presentation password Feature
SLIDESNET-42240 Save presentation throws the ‘The method or operation is not implemented.’ Bug
SLIDESNET-42239 ODP gradient deserialization throws ArgumentNullException Bug
SLIDESNET-42236 PPTX to PDF conversion: Aspose.Slides.PptxReadException: ‘Unknown series type’ Bug
SLIDESNET-42211 Chart missing in exported PDF Bug
SLIDESNET-42209 IOException is thrown when trying to analyze TXT file with PresentationFactory.GetPresentationInfo Bug
SLIDESNET-42202 Wrong background rendering Bug
SLIDESNET-42199 Chart doesn’t render properly Bug
SLIDESNET-42170 Thumbnail improperly generated using Aspose.Slides for .NET 20.8 Bug
SLIDESNET-42164 API hangs infinitely on generating slide thumbnail Bug
SLIDESNET-42163 Sunburst chart creation fails if first branch contains less levels of nesting than the following. Bug
SLIDESNET-42162 Bullet indentation is disturbed on importing HTML Bug
SLIDESNET-42141 Generate wrong image when saving slide as jpg Bug
SLIDESNET-42127 Memory spike while saving Presentation Bug
SLIDESNET-42118 EMF text improperly rendered in exported PDF Bug
SLIDESNET-42108 Unable to save presentation to pdf with chart data that has row with numbers 85/15 Bug
SLIDESNET-42106 Can’t convert pptx file (PptxReadException: Unknown series type) Bug
SLIDESNET-42100 Chart improperly rendered in exported PDF Bug
SLIDESNET-42092 Exception on loading Presentation file Bug
SLIDESNET-42047 XmlException on exporting to PDF Bug
SLIDESNET-41965 In case of font is missing - no error message was displayed Bug
SLIDESNET-40961 Emf image improperly rendered in generated thumbnail Bug
SLIDESNET-40686 High memory consumption while loading and saving pptx Bug
SLIDESNET-39779 ‘Some of the embedded fonts in your presentation cannot be installed’ message appears in saved presentation Bug

Public API Changes

Partial support of Map charts has been added

Partial support of Map charts has been added. It means that you can create, edit, and save charts. Rendering options are limited since Microsoft Office uses Bing data provider for generating chart image. So any changes related to the Map charts made within Aspose.Slides won’t affect the rendering results. If the chart was loaded from an input file, the cached image from the PPTX package will be used for rendering purposes.

Following enum values have been added:

Methods:

Properties:

Following example shows how to create a map chart from scratch:

using (Presentation presentation = new Presentation())
{    
    //create empty chart
    IChart chart = presentation.Slides[0].Shapes.AddChart(ChartType.Map, 50, 50, 500, 400, false);
    
    IChartDataWorkbook wb = chart.ChartData.ChartDataWorkbook;

    //Add series and few data points
    IChartSeries series = chart.ChartData.Series.Add(ChartType.Map);
    series.DataPoints.AddDataPointForMapSeries(wb.GetCell(0, "B2", 5));
    series.DataPoints.AddDataPointForMapSeries(wb.GetCell(0, "B3", 1));    
    series.DataPoints.AddDataPointForMapSeries(wb.GetCell(0, "B4", 10));
    
    //add categories
    chart.ChartData.Categories.Add(wb.GetCell(0, "A2", "United States"));
    chart.ChartData.Categories.Add(wb.GetCell(0, "A3", "Mexico"));
    chart.ChartData.Categories.Add(wb.GetCell(0, "A4", "Brazil"));

    //change data point value    
    IChartDataPoint dataPoint = series.DataPoints[1];    
    dataPoint.ColorValue.AsCell.Value = "15";
    
    //set data point appearance    
    dataPoint.Format.Fill.FillType = FillType.Solid;
    dataPoint.Format.Fill.SolidFillColor.Color = Color.Green;

    presentation.Save("output.pptx", SaveFormat.Pptx);
}
  • When you first open a presentation in PP it may take a few seconds to upload an image of the chart from the Bing service since we don’t provide the cached image.

todo:image_alt_text

Checking password to open via IPresentationInfo interface

CheckPassword method has been added to IPresentationInfo interface and PresentationInfo class. This method allows checking whether a presentation is protected by a password to open.

Method declaration:

/// <summary>
/// Checks whether a password is correct for a presentation protected with open password.
/// </summary>
/// <param name="password">The password to check.</param>
/// <returns>
/// True if the presentation is protected with open password and the password is correct and false otherwise.
/// </returns>
/// <remarks>
/// When the password is null or empty, this method returns false.
/// </remarks>
bool CheckPassword(string password);

The example below demonstrates how to check a password to open a presentation:

IPresentationInfo info = PresentationFactory.Instance.GetPresentationInfo("pres.pptx");
bool isPasswordCorrect = info.CheckPassword("my_password");

ITextFrameFormat.KeepTextFlat property has been added

A new property KeepTextFlat has been added to ITextFrameFormat interface.

Using this property allows to keep text out of 3D scene entirely.

Property declaration:

/// <summary>
/// Returns or set keeping text out of 3D scene entirely.
/// Read/write <see cref="bool"/>.
/// </summary>
bool KeepTextFlat { get; set; }

The code snippet below demonstrates setting keep text out of 3D scene:

using (Presentation pres = new Presentation("Presentation.pptx"))
{
    IAutoShape shape = pres.Slides[0].Shapes[0] as AutoShape;
    if (shape != null)
    {
        shape.TextFrame.TextFrameFormat.KeepTextFlat = true;
    }
}
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