CODEWITHSUNDEEP
javascriptphpjqueryopenseadragon
Levent Tulun
Levent Tulun

Reputation: 711

Add Annotation to Openseadragon

var viewer = OpenSeadragon({
    id: "openseadragon1",
    prefixUrl: "images/openseadragon/",
    showNavigator:  true,
    navigatorPosition:   "BOTTOM_RIGHT",
    tileSources: '/fcgi-bin/iipsrv.fcgi?Deepzoom=<?=$plink?>.jp2.dzi',
    crossOriginPolicy: 'Anonymous',
    zoomInButton:   "zoom-in",
    zoomOutButton:  "zoom-out",
    homeButton:     "home",
    fullPageButton: "full-page"
});

anno.makeAnnotatable(viewer);

$.ajax({
    url: "handlers/H_AnnotationHandler.php",
    data: "case_id=<?=$case_id?>&plink=<?=$plink?>&mode=get",
    type: "post",
    dataType: "json",
    success: function(response) {
        if (!response.error) {
            for (var i=0; i<response.annots.length; i++) {
                console.log(response.annots[i].comment);
                anno.addAnnotation({
                    text: response.annots[i].comment,
                    shapes: [{
                        type: 'rect',
                        geometry: {
                            x: response.annots[i].rect_x,
                            y: response.annots[i].rect_y,
                            width: response.annots[i].rect_w,
                            height: response.annots[i].rect_h
                        }
                    }]
                });
            }
        } else {
            console.log(response.error);
        }
    }
});

I can add annotation live : http://annotorious.github.io/demos/openseadragon-preview.html

After user added the annotation, I store in my database. When the user refresh the page, I am loading saved datas from database using ajax call (H_AnnotationHandler.php). Returning data is true, but I could not draw annotation on jpeg2000 image using anno.addAnnotation, how can I draw it ?

Reference : Add annotations API.

Upvotes: 18

Views: 4675

Answers (2)

Maciej Kwas
Maciej Kwas

Reputation: 6419

You are missing src attribute in anno.addAnnotation method, the thing is that I don't really know what value should go there, there is nothing in documentation about that, the only thing I could find in internet is this plugin:

https://github.com/dgutman/OpenSeadragon-Plugins/tree/master/annotationState_Code

You could try that instead.

EDIT

I actually managed to attach event programatically on the demo page, the open sea dragon module there is registered as a dzi://openseadragon/something, knowing this you can invoke the function

anno.addAnnotation({
    src : 'dzi://openseadragon/something',
    text : 'My annotation',
    shapes : [{
        type : 'rect',
        geometry : { x : 0.8, y: 0.8, width : 0.2, height: 0.2 }
    }]
});

from console (or in your code within the ajax-success loop) and it will be added to the image. Yet, the naming method is pretty... well, I found this in the source code:

annotorious.mediatypes.openseadragon.OpenSeadragonModule.prototype.getItemURL = function(item) {
  // TODO implement something decent!
  return 'dzi://openseadragon/something';
}

so be assured that this might change in future.

Upvotes: 4

Gavriel
Gavriel

Reputation: 19237

Since you didn't share your code I tried to set it up here: https://jsfiddle.net/peLokacs/3/, please do the necessary changes so I can see the annotations. Also I get a "Annotorious does not support this media type in the current version or build configuration." error, If you managed to save the annotations, then you probably know how to fix that too.

var viewer = OpenSeadragon({
    id: "openseadragon-1",
    prefixUrl: "https://neswork.com/javascript/openseadragon-bin-2.1.0/images/",
    //tileSources: "https://openseadragon.github.io/example-images/highsmith/highsmith.dzi",
    tileSources: { type: 'legacy-image-pyramid', levels: [{ url: '0001q.jpg', height: 889, width:  600 }, { url: '0001r.jpg', height: 2201, width: 1485 }, { url: '0001v.jpg', height: 4402, width: 2970 }]},
    showNavigator: true,
});

Upvotes: -1

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