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i'm using papaya API from github

In this papaya dicom viewer, I want to integrate few things.

One is pagination. if i try to edit this API, I'm getting error

What i want:-

  1. In the papaya viewer NEXT, PREV is working fine but I want to make On click to FIRST and the LAST slice moving.
  2. And also the pagination will be 1,2,3,4...If click ONE first slice should appear.

Advance thanks

RaghuPrasanth V
  • 194
  • 16

1 Answers1

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After download Papaya medical research image viewer, choose to work test folder file, So that you can understand how papaya Dicom viewer working.

Step 1:-

In the js folder open constants.js file and create the constants

var MOVE_TO_FIRST_SLICE = "move-to-first-slice",
    MOVE_TO_LAST_SLICE = "move-to-last-slice";
    PAGINATION_LIST = "pagination-list";

Step2:-

Now open the viewer.js, create this on click functions FIRST, LAST and 1,2,3... slices(data-value).

    $(this.container.containerHtml.find("#" + MOVE_TO_FIRST_SLICE + this.container.containerIndex)).click(function () {
        viewer.firstLastSlice(false);
    });

    $(this.container.containerHtml.find("#" + MOVE_TO_LAST_SLICE + this.container.containerIndex)).click(function () {
        viewer.firstLastSlice(true)
    });

    $(this.container.containerHtml.find("." + PAGINATION_LIST + this.container.containerIndex)).click(function () {
        var id = $(this).data('value');
        viewer.pagination(id);
    });

Step 3:- And open the main.js and create the elements

papaya.Container.fillContainerHTML = function (containerHTML, isDefault, params, replaceIndex) {

containerHTML.append("<button type='button' id='"+ (MOVE_TO_FIRST_SLICE + index) + "' class='" + MOVE_TO_FIRST_SLICE + "'>First</button> ");
containerHTML.append("<button type='button' id='"+ (PAPAYA_CONTROL_MAIN_INCREMENT_BUTTON_CSS + index) + "' class='" + PAPAYA_CONTROL_MAIN_INCREMENT_BUTTON_CSS + "'><</button> ");

                var max = 23;
                var slice;
                for(slice=1; slice<=max; slice++){
containerHTML.append("<button id='"+ (PAGINATION_LIST + index) +"' class='"+ (PAGINATION_LIST + index) + "' data-value='" + slice + "'  OnClick(" + slice +") >" + slice + "</button>");
                    }

containerHTML.append("<button id='"+ (PAPAYA_CONTROL_MAIN_DECREMENT_BUTTON_CSS + index) + "' class='" + PAPAYA_CONTROL_MAIN_DECREMENT_BUTTON_CSS + "'>></button> ");              
                containerHTML.append("<button type='button' id='"+ (MOVE_TO_LAST_SLICE + index) + "' class='" + MOVE_TO_LAST_SLICE + "'>Last</button> ");
               containerHTML.append("<button type='button' id='"+ (GET_MAX_VALUE + index) + "' class='" + GET_MAX_VALUE + index + "'>TesT</button> ");
}

Step4:-

The below functions are important to move slices viewer.js

//pagination 1,2,3
papaya.viewer.Viewer.prototype.pagination = function (id, paginationList) {
    var max =  this.volume.header.imageDimensions.zDim;
    //console.log(id);
    this.currentCoord.z = id;
    this.gotoCoordinate(this.currentCoord);

   };

// firstLastSlice
papaya.viewer.Viewer.prototype.firstLastSlice = function (flSlice, degree) {
    var max = this.volume.header.imageDimensions.zDim;
    if (degree === undefined) {
        degree = 0; 
    }

    if (flSlice) {
        this.currentCoord.z = max;
    } else {
        this.currentCoord.z = 0;
    }

    this.gotoCoordinate(this.currentCoord);
};

Explanation

  1. viewer.js calculated total slices this.volume.header.imageDimensions.zDim; and stored the total count in Max variable. If the this.currentCoord.z = max; It will go to last slice else, If the this.currentCoord.z = 0; It will move to first slice.
  2. In pagination on click to passed data-value to viewer.js pagination function and if this.currentCoord.z = id(id <=> data-value ) It will move to particular slice.

After click using this function this.gotoCoordinate(this.currentCoord); the slice will move.

Ashok Charu
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