Aspose::Words::Saving::TiffCompression enum

TiffCompression enum

Specifies what type of compression to apply when saving page images into a TIFF file.

enum class TiffCompression

Values

Name	Value	Description
None	0	Specifies no compression.
Rle	1	Specifies the RLE compression scheme.
Lzw	2	Specifies the LZW compression scheme. In Java emulated by Deflate (Zip) compression.
Ccitt3	3	Specifies the CCITT3 compression scheme.
Ccitt4	4	Specifies the CCITT4 compression scheme.

Examples

Shows how to select the compression scheme to apply to a document that we convert into a TIFF image.

auto doc = MakeObject<Document>();
auto builder = MakeObject<DocumentBuilder>(doc);

builder->InsertImage(ImageDir + u"Logo.jpg");

// Create an "ImageSaveOptions" object which we can pass to the document's "Save" method
// to modify the way in which that method renders the document into an image.
auto options = MakeObject<ImageSaveOptions>(SaveFormat::Tiff);

// Set the "TiffCompression" property to "TiffCompression.None" to apply no compression while saving,
// which may result in a very large output file.
// Set the "TiffCompression" property to "TiffCompression.Rle" to apply RLE compression
// Set the "TiffCompression" property to "TiffCompression.Lzw" to apply LZW compression.
// Set the "TiffCompression" property to "TiffCompression.Ccitt3" to apply CCITT3 compression.
// Set the "TiffCompression" property to "TiffCompression.Ccitt4" to apply CCITT4 compression.
options->set_TiffCompression(tiffCompression);

doc->Save(ArtifactsDir + u"ImageSaveOptions.TiffImageCompression.tiff", options);

switch (tiffCompression)
{
case TiffCompression::None:
    ASSERT_LT(3000000, MakeObject<System::IO::FileInfo>(ArtifactsDir + u"ImageSaveOptions.TiffImageCompression.tiff")->get_Length());
    break;

case TiffCompression::Rle:
    ASSERT_LT(600000, MakeObject<System::IO::FileInfo>(ArtifactsDir + u"ImageSaveOptions.TiffImageCompression.tiff")->get_Length());
    break;

case TiffCompression::Lzw:
    ASSERT_LT(200000, MakeObject<System::IO::FileInfo>(ArtifactsDir + u"ImageSaveOptions.TiffImageCompression.tiff")->get_Length());
    break;

case TiffCompression::Ccitt3:
    ASSERT_GE(90000, MakeObject<System::IO::FileInfo>(ArtifactsDir + u"ImageSaveOptions.TiffImageCompression.tiff")->get_Length());
    break;

case TiffCompression::Ccitt4:
    ASSERT_GE(20000, MakeObject<System::IO::FileInfo>(ArtifactsDir + u"ImageSaveOptions.TiffImageCompression.tiff")->get_Length());
    break;
}

See Also

• Namespace Aspose::Words::Saving
• Library Aspose.Words for C++