IImageSavingCallback

public interface IImageSavingCallback

Implement this interface if you want to control how Aspose.Words saves images when saving a document to HTML. May be used by other formats.

Examples:

Shows how to rename the image name during saving into Markdown document.

 public void renameImages() throws Exception {
     Document doc = new Document(getMyDir() + "Rendering.docx");

     MarkdownSaveOptions saveOptions = new MarkdownSaveOptions();
     // If we convert a document that contains images into Markdown, we will end up with one Markdown file which links to several images.
     // Each image will be in the form of a file in the local file system.
     // There is also a callback that can customize the name and file system location of each image.
     saveOptions.setImageSavingCallback(new SavedImageRename("MarkdownSaveOptions.HandleDocument.md"));
     saveOptions.setSaveFormat(SaveFormat.MARKDOWN);

     // The ImageSaving() method of our callback will be run at this time.
     doc.save(getArtifactsDir() + "MarkdownSaveOptions.HandleDocument.md", saveOptions);

     Supplier> filteredShapes = () -> DocumentHelper.directoryGetFiles(
             getArtifactsDir(), "*").stream().
             filter(s -> s.startsWith(getArtifactsDir() + "MarkdownSaveOptions.HandleDocument.md shape"));

     Assert.assertEquals(1, filteredShapes.get().filter(f -> f.endsWith(".jpeg")).count());
     Assert.assertEquals(8, filteredShapes.get().filter(f -> f.endsWith(".png")).count());
 }

 /// 
 /// Renames saved images that are produced when an Markdown document is saved.
 /// 
 public static class SavedImageRename implements IImageSavingCallback
 {
     public SavedImageRename(String outFileName)
     {
         mOutFileName = outFileName;
     }

     public void imageSaving(ImageSavingArgs args) throws Exception
     {
         String imageFileName = MessageFormat.format("{0} shape {1}, of type {2}.{3}",
                 mOutFileName, ++mCount, args.getCurrentShape().getShapeType(),
                 FilenameUtils.getExtension(args.getImageFileName()));

         args.setImageFileName(imageFileName);
         args.setImageStream(new FileOutputStream(getArtifactsDir() + imageFileName));

         Assert.assertTrue(args.isImageAvailable());
         Assert.assertFalse(args.getKeepImageStreamOpen());
     }

     private int mCount;
     private String mOutFileName;
 }
 

Shows how to split a document into parts and save them.

 public void documentPartsFileNames() throws Exception {
     Document doc = new Document(getMyDir() + "Rendering.docx");
     String outFileName = "SavingCallback.DocumentPartsFileNames.html";

     // Create an "HtmlFixedSaveOptions" object, which we can pass to the document's "Save" method
     // to modify how we convert the document to HTML.
     HtmlSaveOptions options = new HtmlSaveOptions();

     // If we save the document normally, there will be one output HTML
     // document with all the source document's contents.
     // Set the "DocumentSplitCriteria" property to "DocumentSplitCriteria.SectionBreak" to
     // save our document to multiple HTML files: one for each section.
     options.setDocumentSplitCriteria(DocumentSplitCriteria.SECTION_BREAK);

     // Assign a custom callback to the "DocumentPartSavingCallback" property to alter the document part saving logic.
     options.setDocumentPartSavingCallback(new SavedDocumentPartRename(outFileName, options.getDocumentSplitCriteria()));

     // If we convert a document that contains images into html, we will end up with one html file which links to several images.
     // Each image will be in the form of a file in the local file system.
     // There is also a callback that can customize the name and file system location of each image.
     options.setImageSavingCallback(new SavedImageRename(outFileName));

     doc.save(getArtifactsDir() + outFileName, options);
 }

 /// 
 /// Sets custom filenames for output documents that the saving operation splits a document into.
 /// 
 private static class SavedDocumentPartRename implements IDocumentPartSavingCallback {
     public SavedDocumentPartRename(String outFileName, int documentSplitCriteria) {
         mOutFileName = outFileName;
         mDocumentSplitCriteria = documentSplitCriteria;
     }

     public void documentPartSaving(DocumentPartSavingArgs args) throws Exception {
         // We can access the entire source document via the "Document" property.
         Assert.assertTrue(args.getDocument().getOriginalFileName().endsWith("Rendering.docx"));

         String partType = "";

         switch (mDocumentSplitCriteria) {
             case DocumentSplitCriteria.PAGE_BREAK:
                 partType = "Page";
                 break;
             case DocumentSplitCriteria.COLUMN_BREAK:
                 partType = "Column";
                 break;
             case DocumentSplitCriteria.SECTION_BREAK:
                 partType = "Section";
                 break;
             case DocumentSplitCriteria.HEADING_PARAGRAPH:
                 partType = "Paragraph from heading";
                 break;
         }

         String partFileName = MessageFormat.format("{0} part {1}, of type {2}.{3}", mOutFileName, ++mCount, partType, FilenameUtils.getExtension(args.getDocumentPartFileName()));

         // Below are two ways of specifying where Aspose.Words will save each part of the document.
         // 1 -  Set a filename for the output part file:
         args.setDocumentPartFileName(partFileName);

         // 2 -  Create a custom stream for the output part file:
         try (FileOutputStream outputStream = new FileOutputStream(getArtifactsDir() + partFileName)) {
             args.setDocumentPartStream(outputStream);
         }

         Assert.assertNotNull(args.getDocumentPartStream());
         Assert.assertFalse(args.getKeepDocumentPartStreamOpen());
     }

     private int mCount;
     private final String mOutFileName;
     private final int mDocumentSplitCriteria;
 }

 /// 
 /// Sets custom filenames for image files that an HTML conversion creates.
 /// 
 public static class SavedImageRename implements IImageSavingCallback {
     public SavedImageRename(String outFileName) {
         mOutFileName = outFileName;
     }

     public void imageSaving(ImageSavingArgs args) throws Exception {
         String imageFileName = MessageFormat.format("{0} shape {1}, of type {2}.{3}", mOutFileName, ++mCount, args.getCurrentShape().getShapeType(), FilenameUtils.getExtension(args.getImageFileName()));

         // Below are two ways of specifying where Aspose.Words will save each part of the document.
         // 1 -  Set a filename for the output image file:
         args.setImageFileName(imageFileName);

         // 2 -  Create a custom stream for the output image file:
         args.setImageStream(new FileOutputStream(getArtifactsDir() + imageFileName));

         Assert.assertNotNull(args.getImageStream());
         Assert.assertTrue(args.isImageAvailable());
         Assert.assertFalse(args.getKeepImageStreamOpen());
     }

     private int mCount;
     private final String mOutFileName;
 }
 

Methods

Method	Description
imageSaving(ImageSavingArgs args)	Called when Aspose.Words saves an image to HTML.

imageSaving(ImageSavingArgs args)

public abstract void imageSaving(ImageSavingArgs args)

Called when Aspose.Words saves an image to HTML.

Examples:

Shows how to split a document into parts and save them.

 public void documentPartsFileNames() throws Exception {
     Document doc = new Document(getMyDir() + "Rendering.docx");
     String outFileName = "SavingCallback.DocumentPartsFileNames.html";

     // Create an "HtmlFixedSaveOptions" object, which we can pass to the document's "Save" method
     // to modify how we convert the document to HTML.
     HtmlSaveOptions options = new HtmlSaveOptions();

     // If we save the document normally, there will be one output HTML
     // document with all the source document's contents.
     // Set the "DocumentSplitCriteria" property to "DocumentSplitCriteria.SectionBreak" to
     // save our document to multiple HTML files: one for each section.
     options.setDocumentSplitCriteria(DocumentSplitCriteria.SECTION_BREAK);

     // Assign a custom callback to the "DocumentPartSavingCallback" property to alter the document part saving logic.
     options.setDocumentPartSavingCallback(new SavedDocumentPartRename(outFileName, options.getDocumentSplitCriteria()));

     // If we convert a document that contains images into html, we will end up with one html file which links to several images.
     // Each image will be in the form of a file in the local file system.
     // There is also a callback that can customize the name and file system location of each image.
     options.setImageSavingCallback(new SavedImageRename(outFileName));

     doc.save(getArtifactsDir() + outFileName, options);
 }

 /// 
 /// Sets custom filenames for output documents that the saving operation splits a document into.
 /// 
 private static class SavedDocumentPartRename implements IDocumentPartSavingCallback {
     public SavedDocumentPartRename(String outFileName, int documentSplitCriteria) {
         mOutFileName = outFileName;
         mDocumentSplitCriteria = documentSplitCriteria;
     }

     public void documentPartSaving(DocumentPartSavingArgs args) throws Exception {
         // We can access the entire source document via the "Document" property.
         Assert.assertTrue(args.getDocument().getOriginalFileName().endsWith("Rendering.docx"));

         String partType = "";

         switch (mDocumentSplitCriteria) {
             case DocumentSplitCriteria.PAGE_BREAK:
                 partType = "Page";
                 break;
             case DocumentSplitCriteria.COLUMN_BREAK:
                 partType = "Column";
                 break;
             case DocumentSplitCriteria.SECTION_BREAK:
                 partType = "Section";
                 break;
             case DocumentSplitCriteria.HEADING_PARAGRAPH:
                 partType = "Paragraph from heading";
                 break;
         }

         String partFileName = MessageFormat.format("{0} part {1}, of type {2}.{3}", mOutFileName, ++mCount, partType, FilenameUtils.getExtension(args.getDocumentPartFileName()));

         // Below are two ways of specifying where Aspose.Words will save each part of the document.
         // 1 -  Set a filename for the output part file:
         args.setDocumentPartFileName(partFileName);

         // 2 -  Create a custom stream for the output part file:
         try (FileOutputStream outputStream = new FileOutputStream(getArtifactsDir() + partFileName)) {
             args.setDocumentPartStream(outputStream);
         }

         Assert.assertNotNull(args.getDocumentPartStream());
         Assert.assertFalse(args.getKeepDocumentPartStreamOpen());
     }

     private int mCount;
     private final String mOutFileName;
     private final int mDocumentSplitCriteria;
 }

 /// 
 /// Sets custom filenames for image files that an HTML conversion creates.
 /// 
 public static class SavedImageRename implements IImageSavingCallback {
     public SavedImageRename(String outFileName) {
         mOutFileName = outFileName;
     }

     public void imageSaving(ImageSavingArgs args) throws Exception {
         String imageFileName = MessageFormat.format("{0} shape {1}, of type {2}.{3}", mOutFileName, ++mCount, args.getCurrentShape().getShapeType(), FilenameUtils.getExtension(args.getImageFileName()));

         // Below are two ways of specifying where Aspose.Words will save each part of the document.
         // 1 -  Set a filename for the output image file:
         args.setImageFileName(imageFileName);

         // 2 -  Create a custom stream for the output image file:
         args.setImageStream(new FileOutputStream(getArtifactsDir() + imageFileName));

         Assert.assertNotNull(args.getImageStream());
         Assert.assertTrue(args.isImageAvailable());
         Assert.assertFalse(args.getKeepImageStreamOpen());
     }

     private int mCount;
     private final String mOutFileName;
 }
 

Parameters:

Parameter	Type	Description
args	ImageSavingArgs