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Drupal example source code file (preview.js)

This example Drupal source code file (preview.js) is included in the DevDaily.com "Drupal Source Code Warehouse" project. The intent of this project is to help you "Learn Drupal by Example".

PHP - Drupal tags/keywords

accum, color_end, color_start, delta, for, function, height, input, palette, php, text, var, width

The preview.js Drupal example source code

// $Id: preview.js,v 1.2 2010/04/28 20:25:21 dries Exp $

(function ($) {
  Drupal.color = {
    callback: function(context, settings, form, farb, height, width) {
      // Solid background.
      $('#preview', form).css('backgroundColor', $('#palette input[name="palette[base]"]', form).val());

      // Text preview
      $('#text', form).css('color', $('#palette input[name="palette[text]"]', form).val());
      $('#text a, #text h2', form).css('color', $('#palette input[name="palette[link]"]', form).val());

      // Set up gradients if there are some.
      var color_start, color_end;
      for (i in settings.gradients) {
        color_start = farb.unpack($('#palette input[name="palette[' + settings.gradients[i]['colors'][0] + ']"]', form).val());
        color_end = farb.unpack($('#palette input[name="palette[' + settings.gradients[i]['colors'][1] + ']"]', form).val());
        if (color_start && color_end) {
          var delta = [];
          for (j in color_start) {
            delta[j] = (color_end[j] - color_start[j]) / (settings.gradients[i]['vertical'] ? height[i] : width[i]);
          }
          var accum = color_start;
          // Render gradient lines.
          $('#gradient-' + i + ' > div', form).each(function () {
            for (j in accum) {
              accum[j] += delta[j];
            }
            this.style.backgroundColor = farb.pack(accum);
          });
        }
      }
    }
  };
})(jQuery);

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