如何在 Magnolia CMS 中获取图像尺寸

Question

I have an absolute positioned image whose parent container I need to set a height on, but now I can't find a method in magnolia API that allows me to get the width or height of an asset/item.

Is there a way to get Image Dimensions (height, width) of an Asset/Item in Magnolia CMS using only the native API?

If not, how would you do it?

Answer 1

I would write it somehow like

import info.magnolia.dam.api.metadata.MagnoliaAssetMetadata;
// ...
if (asset.supports(MagnoliaAssetMetadata.class)) {
  MagnoliaAssetMetadata metadata = asset.getMetadata(MagnoliaAssetMetadata.class);
  long width = metadata.getWidth();
  long height = metadata.getHeight();
  // do whatever you need with the image dimensions
} else {
  // handle non-image asset
}

See MagnoliaAssetMetadata javadoc and/or sources (and related classes) for more info.

Answer 2

I have done something like this, base on what you have suggested. I am using damTemplatingFunctions to get the asset using the JCR id.

Node node = nodes.nextNode();
String imageJcrId = node.getProperty("image").getValue().getString();
Asset asset = damTemplatingFunctions.getAsset(imageJcrId);
MagnoliaAssetMetadata metadata1 = asset.getMetadata(MagnoliaAssetMetadata.class);
System.out.println(metadata1.getHeight());
System.out.println(metadata1.getWidth());