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Neha_Jadhav
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February 6, 2024
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Asset Management

  • February 6, 2024
  • 3 replies
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How to crop image programmatically using ImageHelper.getCropRect()? Can anyone provide me documentation or sample code for reference?

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    Best answer by TarunKumar

    Hi @neha_jadhav ,

    You can try to use  ImageHelper.createLayer(dataResource) for layer creation:

    Sample code you can check below:

    private void cropCad(final Asset asset, final ResourceResolver resolver, final long cropValue) throws WorkflowException { if (asset == null) { LOG.debug("Cad asset is null"); return; } final Resource dataResource = asset.getOriginal().getChild(JcrConstants.JCR_CONTENT); final Layer layer = ImageHelper.createLayer(dataResource); String cropRatios = StringUtils.EMPTY; if (asset.getMetadata() != null) { long heightinDec = 0L; long widthinDec = 0L; if (asset.getMetadata(DamConstants.TIFF_IMAGELENGTH) != null) { heightinDec = (long) asset.getMetadata(DamConstants.TIFF_IMAGELENGTH); } if (asset.getMetadata(DamConstants.TIFF_IMAGEWIDTH) != null) { widthinDec = (long) asset.getMetadata(DamConstants.TIFF_IMAGEWIDTH); } cropRatios = new StringBuilder(Long.toString(0L)).append(",").append(Long.toString(0L)) .append(",").append(Long.toString(widthinDec)).append(",") .append(Long.toString(heightinDec - cropValue)).toString(); } final Rectangle rect = ImageHelper.getCropRect(cropRatios, asset.getPath()); layer.crop(rect); OutputStream out = null; InputStream in = null; final String mimeType = StandardImageHandler.PNG1_MIMETYPE; File file = null; try { final String tempFilePrefix = "cropped-" + asset.getName(); file = File.createTempFile(tempFilePrefix, ".tmp"); out = FileUtils.openOutputStream(file); layer.write(mimeType, 1.0, out); in = FileUtils.openInputStream(file); final Map<String, Object> map = new HashMap<>(); map.put(RenditionHandler.PROPERTY_RENDITION_MIME_TYPE, mimeType); try { final Revision stateId = asset.createRevision( asset.getName() + Calendar.getInstance().getTimeInMillis(), "Asset backup revision"); asset.removeRendition("original"); if (asset.getOriginal() != null) { LOG.info("Original Not Removed2!!!"); } else { LOG.info("Original is Removed2!!!"); } asset.addRendition("original", in, map); final Rendition croppedOriginal = asset.getOriginal(); if (croppedOriginal != null) { LOG.debug("Original Exists!!! {}", croppedOriginal.getPath()); } else { LOG.info("Cropped original unavailable. Trying to restore to the previous original. {}", asset.getPath()); asset.restore(stateId.getId()); throw new WorkflowException("Error 1 occurred while cropping and setting the rendition"); } } catch (final Exception e) { LOG.error("Error in Adding Original", e); throw new WorkflowException("Error 2 occurred while cropping and setting the rendition"); } } catch (final IOException e) { LOG.error("Error while cropping an outfit image", e); throw new WorkflowException("Error 3 occurred while cropping and setting the rendition"); } finally { if (null != file && !file.delete()) { LOG.warn("Temporary file cannot be deleted or it's null"); } IOUtils.closeQuietly(in); IOUtils.closeQuietly(out); } }

     

     

    Thanks
    Tarun

     

    3 replies

    Kamal_Kishor
    Community Advisor
    Kamal_KishorCommunity Advisor
    Community Advisor
    February 6, 2024

    @neha_jadhav : Please refer: 

    1. https://github.com/sgaem/Image-Rendition-Cropping-/blob/master/bundle/src/main/java/com/aem/sgaem/project/process/ImageRenditionProcess.java#L67
    2. https://aemdiary.wordpress.com/2019/09/26/crop-image-through-code-using-imagehelper-api-in-aem/

    PS: I have not tried these yet. Please try and let us know if it solves your use-case.

    thanks.

     

      SureshDhulipudi
      Community Advisor
      SureshDhulipudiCommunity Advisor
      Community Advisor
      February 6, 2024

      public Layer cropImage(Asset asset, Session session, int x, int y, int width, int height) {
      Rendition original = asset.getOriginal();
      Layer layer = null;

      if (original != null) {
      try {
      layer = new Layer(original.getStream());
      Rectangle rect = new Rectangle(x, y, width, height);
      layer.crop(rect);
      } catch (Exception e) {
      // handle exception
      }
      }

      return layer;
      }

       

      Please replace the x, y, width, and height parameters with the actual values for your crop area.

        TarunKumar
        Community Advisor
        TarunKumarCommunity AdvisorAccepted solution
        Community Advisor
        February 7, 2024

        Hi @neha_jadhav ,

        You can try to use  ImageHelper.createLayer(dataResource) for layer creation:

        Sample code you can check below:

        private void cropCad(final Asset asset, final ResourceResolver resolver, final long cropValue) throws WorkflowException { if (asset == null) { LOG.debug("Cad asset is null"); return; } final Resource dataResource = asset.getOriginal().getChild(JcrConstants.JCR_CONTENT); final Layer layer = ImageHelper.createLayer(dataResource); String cropRatios = StringUtils.EMPTY; if (asset.getMetadata() != null) { long heightinDec = 0L; long widthinDec = 0L; if (asset.getMetadata(DamConstants.TIFF_IMAGELENGTH) != null) { heightinDec = (long) asset.getMetadata(DamConstants.TIFF_IMAGELENGTH); } if (asset.getMetadata(DamConstants.TIFF_IMAGEWIDTH) != null) { widthinDec = (long) asset.getMetadata(DamConstants.TIFF_IMAGEWIDTH); } cropRatios = new StringBuilder(Long.toString(0L)).append(",").append(Long.toString(0L)) .append(",").append(Long.toString(widthinDec)).append(",") .append(Long.toString(heightinDec - cropValue)).toString(); } final Rectangle rect = ImageHelper.getCropRect(cropRatios, asset.getPath()); layer.crop(rect); OutputStream out = null; InputStream in = null; final String mimeType = StandardImageHandler.PNG1_MIMETYPE; File file = null; try { final String tempFilePrefix = "cropped-" + asset.getName(); file = File.createTempFile(tempFilePrefix, ".tmp"); out = FileUtils.openOutputStream(file); layer.write(mimeType, 1.0, out); in = FileUtils.openInputStream(file); final Map<String, Object> map = new HashMap<>(); map.put(RenditionHandler.PROPERTY_RENDITION_MIME_TYPE, mimeType); try { final Revision stateId = asset.createRevision( asset.getName() + Calendar.getInstance().getTimeInMillis(), "Asset backup revision"); asset.removeRendition("original"); if (asset.getOriginal() != null) { LOG.info("Original Not Removed2!!!"); } else { LOG.info("Original is Removed2!!!"); } asset.addRendition("original", in, map); final Rendition croppedOriginal = asset.getOriginal(); if (croppedOriginal != null) { LOG.debug("Original Exists!!! {}", croppedOriginal.getPath()); } else { LOG.info("Cropped original unavailable. Trying to restore to the previous original. {}", asset.getPath()); asset.restore(stateId.getId()); throw new WorkflowException("Error 1 occurred while cropping and setting the rendition"); } } catch (final Exception e) { LOG.error("Error in Adding Original", e); throw new WorkflowException("Error 2 occurred while cropping and setting the rendition"); } } catch (final IOException e) { LOG.error("Error while cropping an outfit image", e); throw new WorkflowException("Error 3 occurred while cropping and setting the rendition"); } finally { if (null != file && !file.delete()) { LOG.warn("Temporary file cannot be deleted or it's null"); } IOUtils.closeQuietly(in); IOUtils.closeQuietly(out); } }

         

         

        Thanks
        Tarun

         

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