NLeSC/Cesium-NcWMS

(function() {
  'use strict';

  function PaletteController(NcwmsService, Messagebus, UserAgent) {
    this.mobile = UserAgent.mobile;
    this.getNcWMSdata = function() {
      return NcwmsService.ncWMSdata;
    };

    this.selectedPalette = 'default';
    Messagebus.subscribe('ncwmsPaletteSelected', function(event, value) {
      if (this.selectedPalette !== value) {
        this.selectedPalette = value;
        this.setOnload(value.graphic);
      }
    }.bind(this));

    this.selectPalette = function(palette) {
      Messagebus.publish('ncwmsPaletteSelected', palette);
    };

    this.setOnload = function(imgURL) {
      var context = document.getElementById('paletteDropdownHeaderCanvas').getContext('2d');
      var img = new Image();
      img.src = imgURL;

      img.onload = function() {
        context.canvas.width = 150;
        context.canvas.height = 10;

        context.translate(150, 0);
        context.rotate(-1.5 * Math.PI);
        context.drawImage(img, 0, 0);
      };
    };
  }

  angular.module('eWaterCycleApp.palette').controller('PaletteController', PaletteController);
})();