text: // Copyright 2007 The Closure Library Authors. All Rights Reserved.
  //
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  //
  //      http://www.apache.org/licenses/LICENSE-2.0
  //
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS-IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
  
  
  /**
   * @fileoverview The color theme used by a gauge (goog.ui.Guage).
   */
  
  
  goog.provide('goog.ui.GaugeTheme');
  
  
  goog.require('goog.graphics.LinearGradient');
  goog.require('goog.graphics.SolidFill');
  goog.require('goog.graphics.Stroke');
  
  
  
  /**
   * A class for the default color theme for a Gauge.
   * Users can extend this class to provide a custom color theme, and apply the
   * custom color theme by calling  {@link goog.ui.Gauge#setTheme}.
   * @constructor
   */
  goog.ui.GaugeTheme = function() {
  };
  
  
  /**
   * Returns the stroke for the external border of the gauge.
   * @return {goog.graphics.Stroke} The stroke to use.
   */
  goog.ui.GaugeTheme.prototype.getExternalBorderStroke = function() {
    return new goog.graphics.Stroke(1, '#333333');
  };
  
  
  /**
   * Returns the fill for the external border of the gauge.
   * @param {number} cx X coordinate of the center of the gauge.
   * @param {number} cy Y coordinate of the center of the gauge.
   * @param {number} r Radius of the gauge.
   * @return {goog.graphics.Fill} The fill to use.
   */
  goog.ui.GaugeTheme.prototype.getExternalBorderFill = function(cx, cy, r) {
    return new goog.graphics.LinearGradient(cx + r, cy - r, cx - r, cy + r,
        '#f7f7f7', '#cccccc');
  };
  
  
  /**
   * Returns the stroke for the internal border of the gauge.
   * @return {goog.graphics.Stroke} The stroke to use.
   */
  goog.ui.GaugeTheme.prototype.getInternalBorderStroke = function() {
    return new goog.graphics.Stroke(2, '#e0e0e0');
  };
  
  
  /**
   * Returns the fill for the internal border of the gauge.
   * @param {number} cx X coordinate of the center of the gauge.
   * @param {number} cy Y coordinate of the center of the gauge.
   * @param {number} r Radius of the gauge.
   * @return {goog.graphics.Fill} The fill to use.
   */
  goog.ui.GaugeTheme.prototype.getInternalBorderFill = function(cx, cy, r) {
    return new goog.graphics.SolidFill('#f7f7f7');
  };
  
  
  /**
   * Returns the stroke for the major ticks of the gauge.
   * @return {goog.graphics.Stroke} The stroke to use.
   */
  goog.ui.GaugeTheme.prototype.getMajorTickStroke = function() {
    return new goog.graphics.Stroke(2, '#333333');
  };
  
  
  /**
   * Returns the stroke for the minor ticks of the gauge.
   * @return {goog.graphics.Stroke} The stroke to use.
   */
  goog.ui.GaugeTheme.prototype.getMinorTickStroke = function() {
    return new goog.graphics.Stroke(1, '#666666');
  };
  
  
  /**
   * Returns the stroke for the hinge at the center of the gauge.
   * @return {goog.graphics.Stroke} The stroke to use.
   */
  goog.ui.GaugeTheme.prototype.getHingeStroke = function() {
    return new goog.graphics.Stroke(1, '#666666');
  };
  
  
  /**
   * Returns the fill for the hinge at the center of the gauge.
   * @param {number} cx  X coordinate of the center of the gauge.
   * @param {number} cy  Y coordinate of the center of the gauge.
   * @param {number} r  Radius of the hinge.
   * @return {goog.graphics.Fill} The fill to use.
   */
  goog.ui.GaugeTheme.prototype.getHingeFill = function(cx, cy, r) {
    return new goog.graphics.LinearGradient(cx + r, cy - r, cx - r, cy + r,
        '#4684ee', '#3776d6');
  };
  
  
  /**
   * Returns the stroke for the gauge needle.
   * @return {goog.graphics.Stroke} The stroke to use.
   */
  goog.ui.GaugeTheme.prototype.getNeedleStroke = function() {
    return new goog.graphics.Stroke(1, '#c63310');
  };
  
  
  /**
   * Returns the fill for the hinge at the center of the gauge.
   * @param {number} cx X coordinate of the center of the gauge.
   * @param {number} cy Y coordinate of the center of the gauge.
   * @param {number} r Radius of the gauge.
   * @return {goog.graphics.Fill} The fill to use.
   */
  goog.ui.GaugeTheme.prototype.getNeedleFill = function(cx, cy, r) {
    // Make needle a bit transparent so that text underneeth is still visible.
    return new goog.graphics.SolidFill('#dc3912', 0.7);
  };
  
  
  /**
   * Returns the color for the gauge title.
   * @return {string} The color to use.
   */
  goog.ui.GaugeTheme.prototype.getTitleColor = function() {
      return '#333333';
  };
  
  
  /**
   * Returns the color for the gauge value.
   * @return {string} The color to use.
   */
  goog.ui.GaugeTheme.prototype.getValueColor = function() {
      return 'black';
  };
  
  
  /**
   * Returns the color for the labels (formatted values) of tick marks.
   * @return {string} The color to use.
   */
  goog.ui.GaugeTheme.prototype.getTickLabelColor = function() {
      return '#333333';
  };
  