Aspose::Words::Saving::XamlFlowSaveOptions::get_ImagesFolder method

XamlFlowSaveOptions::get_ImagesFolder method

Specifies the physical folder where images are saved when exporting a document to XAML format. Default is an empty string.

System::String Aspose::Words::Saving::XamlFlowSaveOptions::get_ImagesFolder() const

Remarks

When you save a Document in XAML format, Aspose.Words needs to save all images embedded in the document as standalone files. ImagesFolder allows you to specify where the images will be saved and ImagesFolderAlias allows to specify how the image URIs will be constructed.

If you save a document into a file and provide a file name, Aspose.Words, by default, saves the images in the same folder where the document file is saved. Use ImagesFolder to override this behavior.

If you save a document into a stream, Aspose.Words does not have a folder where to save the images, but still needs to save the images somewhere. In this case, you need to specify an accessible folder in the ImagesFolder property or provide custom streams via the ImageSavingCallback event handler.

Examples

Shows how to print the filenames of linked images created while converting a document to flow-form .xaml.

void ImageFolder()
{
    auto doc = MakeObject<Document>(MyDir + u"Rendering.docx");

    auto callback = MakeObject<ExXamlFlowSaveOptions::ImageUriPrinter>(ArtifactsDir + u"XamlFlowImageFolderAlias");

    // Create a "XamlFlowSaveOptions" object, which we can pass to the document's "Save" method
    // to modify how we save the document to the XAML save format.
    auto options = MakeObject<XamlFlowSaveOptions>();

    ASSERT_EQ(SaveFormat::XamlFlow, options->get_SaveFormat());

    // Use the "ImagesFolder" property to assign a folder in the local file system into which
    // Aspose.Words will save all the document's linked images.
    options->set_ImagesFolder(ArtifactsDir + u"XamlFlowImageFolder");

    // Use the "ImagesFolderAlias" property to use this folder
    // when constructing image URIs instead of the images folder's name.
    options->set_ImagesFolderAlias(ArtifactsDir + u"XamlFlowImageFolderAlias");

    options->set_ImageSavingCallback(callback);

    // A folder specified by "ImagesFolderAlias" will need to contain the resources instead of "ImagesFolder".
    // We must ensure the folder exists before the callback's streams can put their resources into it.
    System::IO::Directory::CreateDirectory_(options->get_ImagesFolderAlias());

    doc->Save(ArtifactsDir + u"XamlFlowSaveOptions.ImageFolder.xaml", options);

    for (const auto& resource : callback->get_Resources())
    {
        std::cout << callback->get_ImagesFolderAlias() << "/" << resource << std::endl;
    }
}

class ImageUriPrinter : public IImageSavingCallback
{
public:
    String get_ImagesFolderAlias()
    {
        return pr_ImagesFolderAlias;
    }

    SharedPtr<System::Collections::Generic::List<String>> get_Resources()
    {
        return pr_Resources;
    }

    ImageUriPrinter(String imagesFolderAlias)
    {
        pr_ImagesFolderAlias = imagesFolderAlias;
        pr_Resources = MakeObject<System::Collections::Generic::List<String>>();
    }

private:
    String pr_ImagesFolderAlias;
    SharedPtr<System::Collections::Generic::List<String>> pr_Resources;

    void ImageSaving(SharedPtr<ImageSavingArgs> args) override
    {
        get_Resources()->Add(args->get_ImageFileName());

        // If we specified an image folder alias, we would also need
        // to redirect each stream to put its image in the alias folder.
        args->set_ImageStream(MakeObject<System::IO::FileStream>(String::Format(u"{0}/{1}", get_ImagesFolderAlias(), args->get_ImageFileName()),
                                                                 System::IO::FileMode::Create));
        args->set_KeepImageStreamOpen(false);
    }
};

See Also

Aspose::Words::Saving::XamlFlowSaveOptions::get_ImageSavingCallback method Aspose::Words::Saving::XamlFlowSaveOptions::get_ImagesFolderAlias method