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The watermarks in Visio documents are usually represented by shapes. But sometimes document headers&footers can also be used to display text that can be considered as the watermark. GroupDocs.Watermark API allows you to find and remove watermarks of both types in Visio document.
Removing watermark from a particular page of a Visio document using GroupDocs.Watermark consists of following steps.
- Load the document
- Create and initialize image/text search criteria
- Find possible watermarks
- Remove found watermarks
- Save the document
Following code sample shows how to remove watermark from a particular page.
advanced_usage.add_watermarks_to_diagrams.DiagramRemoveWatermark
DiagramLoadOptions loadOptions = new DiagramLoadOptions();
// Specify an absolute or relative path to your document. Ex: "C:\\Docs\\diagram.vsdx"
Watermarker watermarker = new Watermarker("diagram.vsdx", loadOptions);
DiagramContent content = watermarker.getContent(DiagramContent.class);
// Initialize search criteria
ImageSearchCriteria imageSearchCriteria = new ImageDctHashSearchCriteria("logo.png");
TextSearchCriteria textSearchCriteria = new TextSearchCriteria("Company Name");
// Call FindWatermarks method for the first page
PossibleWatermarkCollection possibleWatermarks = content.getPages().get_Item(0).search(textSearchCriteria.or(imageSearchCriteria));
// Remove all found watermarks
possibleWatermarks.clear();
watermarker.save("diagram.vsdx");
watermarker.close();
Search() method searches watermarks of all mentioned types, but in some cases, it’s necessary to analyze only one type of Visio objects. Following code sample shows how to get information about all the shapes in a Visio document.
advanced_usage.add_watermarks_to_diagrams.DiagramGetShapesInformation
DiagramLoadOptions loadOptions = new DiagramLoadOptions();
// Specify an absolute or relative path to your document. Ex: "C:\\Docs\\diagram.vsdx"
Watermarker watermarker = new Watermarker("diagram.vsdx", loadOptions);
DiagramContent content = watermarker.getContent(DiagramContent.class);
for (DiagramPage page : content.getPages())
{
for (DiagramShape shape : page.getShapes())
{
if (shape.getImage() != null)
{
System.out.println(shape.getImage().getWidth());
System.out.println(shape.getImage().getHeight());
System.out.println(shape.getImage().getBytes().length);
}
System.out.println(shape.getName());
System.out.println(shape.getX());
System.out.println(shape.getY());
System.out.println(shape.getWidth());
System.out.println(shape.getHeight());
System.out.println(shape.getRotateAngle());
System.out.println(shape.getText());
System.out.println(shape.getId());
}
}
watermarker.close();
You can also remove a particular shape from a page using GroupDocs.Watermark API (as shown in the sample code below).
advanced_usage.add_watermarks_to_diagrams.DiagramRemoveShape()
DiagramLoadOptions loadOptions = new DiagramLoadOptions();
// Specify an absolute or relative path to your document. Ex: @"C:\Docs\diagram.vsdx"
Watermarker watermarker = new Watermarker("diagram.vsdx", loadOptions);
DiagramContent content = watermarker.getContent(DiagramContent.class);
// Remove shape by index
content.getPages().get_Item(0).getShapes().removeAt(0);
// Remove shape by reference
content.getPages().get_Item(0).getShapes().remove(content.getPages().get_Item(0).getShapes().get_Item(0));
watermarker.save("diagram.vsdx");
watermarker.close();
You can also find and remove the shapes with a particular text formatting from a Visio document as shown in the below code sample.
advanced_usage.add_watermarks_to_diagrams.DiagramRemoveTextShapesWithParticularTextFormatting
DiagramLoadOptions loadOptions = new DiagramLoadOptions();
// Specify an absolute or relative path to your document. Ex: "C:\\Docs\\diagram.vsdx"
Watermarker watermarker = new Watermarker("diagram.vsdx", loadOptions);
DiagramContent content = watermarker.getContent(DiagramContent.class);
for (DiagramPage page : content.getPages())
{
for (int i = page.getShapes().getCount() - 1; i >= 0; i--)
{
for (FormattedTextFragment fragment : page.getShapes().get_Item(i).getFormattedTextFragments())
{
if (fragment.getForegroundColor().equals(Color.getRed()) && fragment.getFont().getFamilyName() == "Arial")
{
page.getShapes().removeAt(i);
break;
}
}
}
}
watermarker.save("diagram.vsdx");
watermarker.close();
Using GroupDocs.Watermark for Java, you can also remove hyperlink associated with a particular shape inside a Visio document. Use following code sample to achieve this functionality.
advanced_usage.add_watermarks_to_diagrams.DiagramRemoveHyperlinks
DiagramLoadOptions loadOptions = new DiagramLoadOptions();
// Specify an absolute or relative path to your document. Ex: "C:\\Docs\\diagram.vsdx"
Watermarker watermarker = new Watermarker("diagram.vsdx", loadOptions);
DiagramContent content = watermarker.getContent(DiagramContent.class);
DiagramShape shape = content.getPages().get_Item(0).getShapes().get_Item(0);
for (int i = shape.getHyperlinks().getCount() - 1; i >= 0; i--)
{
if (shape.getHyperlinks().get_Item(i).getAddress().contains("http://someurl.com"))
{
shape.getHyperlinks().removeAt(i);
}
}
watermarker.save("diagram.vsdx");
watermarker.close();
Since version 18.1. GroupDocs.Watermark allows you to replace the text for particular shapes. Following code sample shows how to replace shapes’ text.
advanced_usage.add_watermarks_to_diagrams.DiagramReplaceTextForParticularShapes
DiagramLoadOptions loadOptions = new DiagramLoadOptions();
// Specify an absolute or relative path to your document. Ex: @"C:\Docs\diagram.vsdx"
Watermarker watermarker = new Watermarker("diagram.vsdx", loadOptions);
DiagramContent content = watermarker.getContent(DiagramContent.class);
for (DiagramShape shape : content.getPages().get_Item(0).getShapes())
{
if (shape.getText() != null && shape.getText().contains("© Aspose 2016"))
{
shape.setText("© GroupDocs 2017");
}
}
// Save changes
watermarker.save("diagram.vsdx");
watermarker.close();
You can also replace the text with a formatted text as shown in the following code sample.
advanced_usage.add_watermarks_to_diagrams.DiagramReplaceTextWithFormatting
DiagramLoadOptions loadOptions = new DiagramLoadOptions();
// Specify an absolute or relative path to your document. Ex: "C:\\Docs\\diagram.vsdx"
Watermarker watermarker = new Watermarker("diagram.vsdx", loadOptions);
DiagramContent content = watermarker.getContent(DiagramContent.class);
for (DiagramShape shape : content.getPages().get_Item(0).getShapes())
{
if (shape.getText() != null && shape.getText().contains("© Aspose 2016"))
{
shape.getFormattedTextFragments().clear();
shape.getFormattedTextFragments().add("© GroupDocs 2017", new Font("Calibri", 19, FontStyle.Bold), Color.getRed(), Color.getAqua());
}
}
// Save changes
watermarker.save("diagram.vsdx");
watermarker.close();
Since version 18.1. GroupDocs.Watermark also allows you to replace the image of particular shapes as shown in the below code sample.
advanced_usage.add_watermarks_to_diagrams.DiagramReplaceShapeImage
DiagramLoadOptions loadOptions = new DiagramLoadOptions();
// Specify an absolute or relative path to your document. Ex: "C:\\Docs\\diagram.vsdx"
Watermarker watermarker = new Watermarker("diagram.vsdx", loadOptions);
DiagramContent content = watermarker.getContent(DiagramContent.class);
for (DiagramShape shape : content.getPages().get_Item(0).getShapes())
{
if (shape.getImage() != null)
{
File imageFile = new File("test.png");
byte[] imageBytes = new byte[(int) imageFile.length()];
InputStream imageInputStream = new FileInputStream(imageFile);
imageInputStream.read(imageBytes);
imageInputStream.close();
shape.setImage(new DiagramWatermarkableImage(imageBytes));
}
}
// Save changes
watermarker.save("diagram.vsdx");
watermarker.close();
The API allows you to extract information about all the headers and footers in a Visio document using following code.
advanced_usage.add_watermarks_to_diagrams.DiagramGetHeaderFooterInformation
DiagramLoadOptions loadOptions = new DiagramLoadOptions();
// Specify an absolute or relative path to your document. Ex: "C:\\Docs\\diagram.vsdx"
Watermarker watermarker = new Watermarker("diagram.vsdx", loadOptions);
DiagramContent content = watermarker.getContent(DiagramContent.class);
// Get header&footer font settings
System.out.println(content.getHeaderFooter().getFont().getFamilyName());
System.out.println(content.getHeaderFooter().getFont().getSize());
System.out.println(content.getHeaderFooter().getFont().getBold());
System.out.println(content.getHeaderFooter().getFont().getItalic());
System.out.println(content.getHeaderFooter().getFont().getUnderline());
System.out.println(content.getHeaderFooter().getFont().getStrikeout());
// Get text contained in headers&footers
System.out.println(content.getHeaderFooter().getHeaderLeft());
System.out.println(content.getHeaderFooter().getHeaderCenter());
System.out.println(content.getHeaderFooter().getHeaderRight());
System.out.println(content.getHeaderFooter().getFooterLeft());
System.out.println(content.getHeaderFooter().getFooterCenter());
System.out.println(content.getHeaderFooter().getFooterRight());
// Get text color
System.out.println(content.getHeaderFooter().getTextColor().toArgb());
// Get header&footer margins
System.out.println(content.getHeaderFooter().getFooterMargin());
System.out.println(content.getHeaderFooter().getHeaderMargin());
watermarker.close();
Following code sample shows how to remove and replace a particular header and footer in a Visio document.
advanced_usage.add_watermarks_to_diagrams.DiagramRemoveOrReplaceHeaderFooter
DiagramLoadOptions loadOptions = new DiagramLoadOptions();
// Specify an absolute or relative path to your document. Ex: "C:\\Docs\\diagram.vsdx"
Watermarker watermarker = new Watermarker("diagram.vsdx", loadOptions);
DiagramContent content = watermarker.getContent(DiagramContent.class);
// Remove header
content.getHeaderFooter().setHeaderCenter(null);
// Replace footer
content.getHeaderFooter().setFooterCenter("Footer center");
content.getHeaderFooter().getFont().setSize(19);
content.getHeaderFooter().getFont().setFamilyName("Calibri");
content.getHeaderFooter().setTextColor(Color.getRed());
watermarker.save("diagram.vsdx");
watermarker.close();
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