Revision 551c4f43
Added by Andreas Kohlbecker almost 4 years ago
| cdmlib-services/src/main/java/eu/etaxonomy/cdm/api/service/media/MediaUriTransformationProcessor.java | ||
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*/ |
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package eu.etaxonomy.cdm.api.service.media; |
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import java.awt.Point; |
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import java.net.URI; |
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import java.net.URISyntaxException; |
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import eu.etaxonomy.cdm.model.media.ImageFile; |
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import eu.etaxonomy.cdm.model.media.MediaRepresentation; |
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import eu.etaxonomy.cdm.model.media.MediaRepresentationPart; |
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import eu.etaxonomy.cdm.model.metadata.PreferencePredicate; |
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/** |
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* Creates new purely volatile {@link MediaRepresentation MediaRepresentations} objects based
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* a list of {@link MediaUriTransformation} rules. These rules are usually stored in the
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* per data base {@link PreferencePredicate.MediaRepresentationTransformations MediaRepresentationTransformations} property
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* (See also {@link MediaToolbox#readTransformations()}).
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* <p> |
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* These volatile {@link MediaRepresentation MediaRepresentations} objects must not be persisted!
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* |
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* @author a.kohlbecker |
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* @since Jul 8, 2020 |
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*/ |
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public class MediaUriTransformationProcessor {
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private static final Logger logger = Logger.getLogger(MediaUriTransformationProcessor.class); |
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return newUris; |
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} |
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protected URI uriTransformation(URI uri, String pathQueryFragment, MediaUriTransformation replacement) throws URISyntaxException {
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protected URI uriTransformation(URI uri, String pathQueryFragment, MediaUriTransformation replacement) |
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throws URISyntaxException {
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String newScheme = uri.getScheme(); |
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String newHost = uri.getHost(); |
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if (replacement.getHost() != null) {
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Matcher m = replacement.getHost().searchPattern().matcher(newHost); |
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isMatch &= m.find(); |
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newHost= m.replaceAll(replacement.getHost().getReplace()); |
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newHost = m.replaceAll(replacement.getHost().getReplace());
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} |
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// TODO port |
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isMatch &= m.find(); |
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newPathQueryFragment = m.replaceAll(replacement.getPathQueryFragment().getReplace()); |
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} |
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if(isMatch) {
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if (isMatch) {
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// recombine |
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String newURIString = newScheme + "://" + newHost + (newPort > 0 ? ":" + String.valueOf(newPort) : "") |
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+ newPathQueryFragment; |
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return uri; |
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} |
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} |
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protected String buildPathQueryFragment(URI uri) {
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} |
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@Deprecated |
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public List<MediaRepresentation> makeNewMediaRepresentationsFor(URI uri){
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public List<MediaRepresentation> makeNewMediaRepresentationsFor(URI uri) {
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List<MediaRepresentation> repr = new ArrayList<>(); |
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try {
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URI newUri = uriTransformation(uri, pathQueryFragment, transformation); |
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MediaRepresentation mRepresentation = MediaRepresentation.NewInstance(transformation.getMimeType(), null); |
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MediaRepresentation mRepresentation = MediaRepresentation.NewInstance(transformation.getMimeType(), |
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null); |
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MediaRepresentationPart part; |
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if(transformation.getMimeType() != null && transformation.getMimeType().startsWith("image/")) {
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if (transformation.getMimeType() != null && transformation.getMimeType().startsWith("image/")) {
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part = ImageFile.NewInstance(newUri, null, transformation.getHeight(), transformation.getWidth()); |
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} else {
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part = MediaRepresentationPart.NewInstance(newUri, null); |
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return repr; |
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} |
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public List<MediaRepresentation> makeNewMediaRepresentationsFor(MediaRepresentationPart part){
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public List<MediaRepresentation> makeNewMediaRepresentationsFor(MediaRepresentationPart part) {
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List<MediaRepresentation> repr = new ArrayList<>(); |
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try {
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URI newUri = uriTransformation(part.getUri(), pathQueryFragment, transformation); |
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if(newUri.equals(part.getUri())){
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if (newUri.equals(part.getUri())) {
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// transformation did not apply |
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continue; |
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} |
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MediaRepresentation mRepresentation = MediaRepresentation.NewInstance(transformation.getMimeType(), null); |
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MediaRepresentation mRepresentation = MediaRepresentation.NewInstance(transformation.getMimeType(), |
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null); |
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MediaRepresentationPart newPart; |
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if(transformation.getMimeType() != null && transformation.getMimeType().startsWith("image/")) {
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if(part instanceof ImageFile) {
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ImageFile originalImageFile = (ImageFile)part; |
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Point newSize = calculateTargetSize(transformation, originalImageFile.getWidth(), originalImageFile.getHeight()); |
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if (transformation.getMimeType() != null && transformation.getMimeType().startsWith("image/")) {
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if (part instanceof ImageFile) {
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ImageFile originalImageFile = (ImageFile) part; |
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Point newSize = calculateTargetSize(transformation, originalImageFile.getWidth(), |
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originalImageFile.getHeight()); |
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newPart = ImageFile.NewInstance(newUri, null, newSize.y, newSize.x); |
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} else {
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newPart = ImageFile.NewInstance(newUri, null, transformation.getHeight(), transformation.getWidth()); |
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newPart = ImageFile.NewInstance(newUri, null, transformation.getHeight(), |
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transformation.getWidth()); |
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} |
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} else {
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newPart = MediaRepresentationPart.NewInstance(newUri, null); |
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protected Point calculateTargetSize(MediaUriTransformation trans, Integer originalWidth, Integer originalHeight) {
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if(trans.getWidth() == null && trans.getHeight() == null) {
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if (trans.getWidth() == null && trans.getHeight() == null) {
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return null; |
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} else if(originalWidth == null || originalHeight == null) {
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} else if (originalWidth == null || originalHeight == null) {
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return new Point(trans.getWidth(), trans.getHeight()); |
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} else {
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// calculate |
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float originalAspectRatio = ((float)originalWidth/(float)originalHeight);
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if(trans.getWidth() == null) {
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return new Point(Math.round((float)trans.getHeight() * originalAspectRatio), trans.getHeight()); |
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} else if(trans.getHeight() == null) {
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return new Point(trans.getWidth(), Math.round((float)trans.getWidth() / originalAspectRatio)); |
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} else if(trans.getWidth().equals(trans.getHeight())) {
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float originalAspectRatio = ((float) originalWidth / (float) originalHeight);
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if (trans.getWidth() == null) {
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return new Point(Math.round((float) trans.getHeight() * originalAspectRatio), trans.getHeight());
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} else if (trans.getHeight() == null) {
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return new Point(trans.getWidth(), Math.round((float) trans.getWidth() / originalAspectRatio));
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} else if (trans.getWidth().equals(trans.getHeight())) {
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int extend = trans.getWidth(); |
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if(originalWidth.equals(originalHeight)) {
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if (originalWidth.equals(originalHeight)) {
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return new Point(extend, extend); |
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} else if(originalWidth > originalHeight) {
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} else if (originalWidth > originalHeight) {
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return new Point(extend, Math.round(extend / originalAspectRatio)); |
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} else {
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return new Point(Math.round(extend * originalAspectRatio), extend); |
Also available in: Unified diff
ref #9134 adding ducumentation for MediaUriTransformationProcessor and Mediatoolbox