Club Drupal

/**

 * @file

 * Adds javascript functions for font resizing.

 */

(function ($) {

$(document).ready(function() {

  var originalFontSize = $('body').css('font-size');

  // Reset font size

  $(".resetFont").click(function() {

    mayoColumnsResetHeight();

    $('body').css('font-size', originalFontSize);

    mayoColumnsAdjustHeight();

    return false;

  });

  // Increase font size

  $(".increaseFont").click(function() {

    var currentFontSize = $('body').css('font-size');

    var currentFontSizeNum = parseFloat(currentFontSize, 10);

    var newFontSizeNum = currentFontSizeNum + 1;

    if (20 >= newFontSizeNum) { /* max 20px */

      var newFontSize = newFontSizeNum + 'px';

      mayoColumnsResetHeight();

      $('body').css('font-size', newFontSize);

      mayoColumnsAdjustHeight();

    }

    return false;

  });

  // Decrease font size

  $(".decreaseFont").click(function() {

    var currentFontSize = $('body').css('font-size');

    var currentFontSizeNum = parseFloat(currentFontSize, 10);

    var newFontSizeNum = currentFontSizeNum - 1;

    if (10 <= newFontSizeNum) { /* min 10px */

      var newFontSize = newFontSizeNum + 'px';

      mayoColumnsResetHeight();

      $('body').css('font-size', newFontSize);

      mayoColumnsAdjustHeight();

    }

    return false;

  });

});

})(jQuery);

function mayoEqualHeight(group) {

  var tallest = 0;

  group.each(function() {

    var thisHeight = jQuery(this).height();

    if (thisHeight > tallest) {

      tallest = thisHeight;

    }

  });

  group.height(tallest);

}

function mayoColumnsResetHeight() {

  // reset height of column blocks to 'auto' before chaning font size

  // so that the column blocks can change the size based on the new

  // font size

  if (mayoFunctionExists('mayoEqualHeight')) {

    jQuery("#top-columns .column-block").height('auto');

    jQuery("#bottom-columns .column-block").height('auto');

  }

}

function mayoColumnsAdjustHeight() {

  // equalize the height of the column blocks to the tallest height

  if (mayoFunctionExists('mayoEqualHeight')) {

    mayoEqualHeight(jQuery("#top-columns .column-block"));

    mayoEqualHeight(jQuery("#bottom-columns .column-block"));

  }

}

function mayoFunctionExists(function_name) {

  if (typeof function_name == 'string') {

    return (typeof this.window[function_name] == 'function');

  }

  else {

    return (function_name instanceof Function);

  }

}