// Copyright 2012 ESRI
// 
// All rights reserved under the copyright laws of the United States
// and applicable international laws, treaties, and conventions.
// 
// You may freely redistribute and use this sample code, with or
// without modification, provided you include the original copyright
// notice and use restrictions.
// 
// See the use restrictions.
// 

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;

using ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.Controls;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Display;
using ESRI.ArcGIS.esriSystem;

namespace ColorRamps
{

  public class Form2 : System.Windows.Forms.Form
  {
    private System.Windows.Forms.ComboBox comboBox1;
    private System.Windows.Forms.GroupBox groupBox1;
    private System.Windows.Forms.GroupBox groupBox2;
    private System.Windows.Forms.TextBox textBox1;
    private System.Windows.Forms.TextBox textBox2;
    private System.Windows.Forms.TextBox textBox3;
    private System.Windows.Forms.Label label1;
    private System.Windows.Forms.GroupBox groupBox3;
    private System.Windows.Forms.Button button2;
    private System.Windows.Forms.Button button3;
    private System.ComponentModel.Container components = null;
    private System.Windows.Forms.Label label2;
    private System.Windows.Forms.Label label3;
    private System.Windows.Forms.Label label4;
    private ESRI.ArcGIS.Controls.AxSymbologyControl axSymbologyControl1;
    
    private IClassBreaksRenderer m_classBreaksRenderer;
    private IStyleGalleryItem m_styleGalleryItem;
    private IFeatureLayer m_featureLayer;

    public Form2()
    {
      InitializeComponent();
    }


    protected override void Dispose( bool disposing )
    {
      if( disposing )
      {
        if(components != null)
        {
          components.Dispose();
        }
      }
      base.Dispose( disposing );
    }

    #region Windows Form Designer generated code
    /// <summary>
    /// Required method for Designer support - do not modify
    /// the contents of this method with the code editor.
    /// </summary>
    private void InitializeComponent()
    {
      System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Form2));
      this.comboBox1 = new System.Windows.Forms.ComboBox();
      this.groupBox1 = new System.Windows.Forms.GroupBox();
      this.label1 = new System.Windows.Forms.Label();
      this.groupBox2 = new System.Windows.Forms.GroupBox();
      this.label4 = new System.Windows.Forms.Label();
      this.label3 = new System.Windows.Forms.Label();
      this.label2 = new System.Windows.Forms.Label();
      this.textBox3 = new System.Windows.Forms.TextBox();
      this.textBox2 = new System.Windows.Forms.TextBox();
      this.textBox1 = new System.Windows.Forms.TextBox();
      this.groupBox3 = new System.Windows.Forms.GroupBox();
      this.axSymbologyControl1 = new ESRI.ArcGIS.Controls.AxSymbologyControl();
      this.button2 = new System.Windows.Forms.Button();
      this.button3 = new System.Windows.Forms.Button();
      this.groupBox1.SuspendLayout();
      this.groupBox2.SuspendLayout();
      this.groupBox3.SuspendLayout();
      ((System.ComponentModel.ISupportInitialize)(this.axSymbologyControl1)).BeginInit();
      this.SuspendLayout();
      // 
      // comboBox1
      // 
      this.comboBox1.Location = new System.Drawing.Point(16, 56);
      this.comboBox1.Name = "comboBox1";
      this.comboBox1.Size = new System.Drawing.Size(168, 21);
      this.comboBox1.TabIndex = 0;
      this.comboBox1.Text = "comboBox1";
      this.comboBox1.SelectedIndexChanged += new System.EventHandler(this.comboBox1_SelectedIndexChanged);
      // 
      // groupBox1
      // 
      this.groupBox1.Controls.Add(this.label1);
      this.groupBox1.Controls.Add(this.comboBox1);
      this.groupBox1.Location = new System.Drawing.Point(304, 24);
      this.groupBox1.Name = "groupBox1";
      this.groupBox1.Size = new System.Drawing.Size(232, 100);
      this.groupBox1.TabIndex = 1;
      this.groupBox1.TabStop = false;
      this.groupBox1.Text = "FeatureLayer";
      // 
      // label1
      // 
      this.label1.Location = new System.Drawing.Point(16, 32);
      this.label1.Name = "label1";
      this.label1.TabIndex = 1;
      this.label1.Text = "Numeric Fields:";
      // 
      // groupBox2
      // 
      this.groupBox2.Controls.Add(this.label4);
      this.groupBox2.Controls.Add(this.label3);
      this.groupBox2.Controls.Add(this.label2);
      this.groupBox2.Controls.Add(this.textBox3);
      this.groupBox2.Controls.Add(this.textBox2);
      this.groupBox2.Controls.Add(this.textBox1);
      this.groupBox2.Location = new System.Drawing.Point(304, 128);
      this.groupBox2.Name = "groupBox2";
      this.groupBox2.Size = new System.Drawing.Size(232, 128);
      this.groupBox2.TabIndex = 1;
      this.groupBox2.TabStop = false;
      this.groupBox2.Text = "Break";
      // 
      // label4
      // 
      this.label4.Location = new System.Drawing.Point(8, 96);
      this.label4.Name = "label4";
      this.label4.TabIndex = 7;
      this.label4.Text = "Max Value:";
      // 
      // label3
      // 
      this.label3.Location = new System.Drawing.Point(8, 64);
      this.label3.Name = "label3";
      this.label3.TabIndex = 6;
      this.label3.Text = "Min Value:";
      // 
      // label2
      // 
      this.label2.Location = new System.Drawing.Point(8, 32);
      this.label2.Name = "label2";
      this.label2.Size = new System.Drawing.Size(104, 23);
      this.label2.TabIndex = 5;
      this.label2.Text = "Number of Classes:";
      // 
      // textBox3
      // 
      this.textBox3.Enabled = false;
      this.textBox3.Location = new System.Drawing.Point(120, 96);
      this.textBox3.Name = "textBox3";
      this.textBox3.TabIndex = 4;
      this.textBox3.Text = "";
      // 
      // textBox2
      // 
      this.textBox2.Enabled = false;
      this.textBox2.Location = new System.Drawing.Point(120, 64);
      this.textBox2.Name = "textBox2";
      this.textBox2.TabIndex = 3;
      this.textBox2.Text = "";
      // 
      // textBox1
      // 
      this.textBox1.Location = new System.Drawing.Point(120, 32);
      this.textBox1.Name = "textBox1";
      this.textBox1.TabIndex = 2;
      this.textBox1.Text = "";
      this.textBox1.Leave += new System.EventHandler(this.textBox1_Leave);
      // 
      // groupBox3
      // 
      this.groupBox3.Controls.Add(this.axSymbologyControl1);
      this.groupBox3.Location = new System.Drawing.Point(8, 8);
      this.groupBox3.Name = "groupBox3";
      this.groupBox3.Size = new System.Drawing.Size(288, 288);
      this.groupBox3.TabIndex = 3;
      this.groupBox3.TabStop = false;
      this.groupBox3.Text = "Symbology";
      // 
      // axSymbologyControl1
      // 
      this.axSymbologyControl1.ContainingControl = this;
      this.axSymbologyControl1.Location = new System.Drawing.Point(8, 16);
      this.axSymbologyControl1.Name = "axSymbologyControl1";
      this.axSymbologyControl1.OcxState = ((System.Windows.Forms.AxHost.State)(resources.GetObject("axSymbologyControl1.OcxState")));
      this.axSymbologyControl1.Size = new System.Drawing.Size(272, 265);
      this.axSymbologyControl1.TabIndex = 0;
      this.axSymbologyControl1.OnItemSelected += new ESRI.ArcGIS.Controls.ISymbologyControlEvents_Ax_OnItemSelectedEventHandler(this.axSymbologyControl1_OnItemSelected);
      // 
      // button2
      // 
      this.button2.Location = new System.Drawing.Point(384, 264);
      this.button2.Name = "button2";
      this.button2.TabIndex = 3;
      this.button2.Text = "OK";
      this.button2.Click += new System.EventHandler(this.button2_Click);
      // 
      // button3
      // 
      this.button3.Location = new System.Drawing.Point(464, 264);
      this.button3.Name = "button3";
      this.button3.TabIndex = 4;
      this.button3.Text = "Cancel";
      this.button3.Click += new System.EventHandler(this.button3_Click);
      // 
      // Form2
      // 
      this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
      this.ClientSize = new System.Drawing.Size(546, 304);
      this.Controls.Add(this.button3);
      this.Controls.Add(this.groupBox3);
      this.Controls.Add(this.groupBox1);
      this.Controls.Add(this.groupBox2);
      this.Controls.Add(this.button2);
      this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
      this.Name = "Form2";
      this.Text = "Class Breaks Renderer";
      this.Load += new System.EventHandler(this.Form3_Load);
      this.groupBox1.ResumeLayout(false);
      this.groupBox2.ResumeLayout(false);
      this.groupBox3.ResumeLayout(false);
      ((System.ComponentModel.ISupportInitialize)(this.axSymbologyControl1)).EndInit();
      this.ResumeLayout(false);

    }
    #endregion

    private void Form3_Load(object sender, System.EventArgs e)
    {
    
      //Get the ArcGIS install location
            string sInstall = ESRI.ArcGIS.RuntimeManager.ActiveRuntime.Path;

      //Load the ESRI.ServerStyle file into the SymbologyControl
      axSymbologyControl1.LoadStyleFile(sInstall + "\\Styles\\ESRI.ServerStyle");

      //Set the style class
      axSymbologyControl1.StyleClass = esriSymbologyStyleClass.esriStyleClassColorRamps;

      //Select the color ramp item
      axSymbologyControl1.GetStyleClass(axSymbologyControl1.StyleClass).SelectItem(0);
    }

   
    private void button2_Click(object sender, System.EventArgs e)
    {
      //Create a new ClassBreaksRenderer and set properties
      m_classBreaksRenderer = new ClassBreaksRenderer();
      m_classBreaksRenderer.Field = comboBox1.SelectedItem.ToString();
      m_classBreaksRenderer.BreakCount = Convert.ToInt32(textBox1.Text);
      m_classBreaksRenderer.MinimumBreak = Convert.ToDouble(textBox2.Text);

      //Calculate the class interval by a simple mean value
      double interval = (Convert.ToDouble(textBox3.Text) - m_classBreaksRenderer.MinimumBreak) / m_classBreaksRenderer.BreakCount;

      //Get the color ramp
      IColorRamp colorRamp = (IColorRamp) m_styleGalleryItem.Item;
      //Set the size of the color ramp and recreate it
      colorRamp.Size = Convert.ToInt32(textBox1.Text);
      bool createRamp;
      colorRamp.CreateRamp(out createRamp);

      //Get the enumeration of colors from the color ramp
      IEnumColors enumColors = colorRamp.Colors;
      enumColors.Reset();
      double currentBreak = m_classBreaksRenderer.MinimumBreak;

      ISimpleFillSymbol simpleFillSymbol;
      //Loop through each class break
      for (int i = 0; i <= m_classBreaksRenderer.BreakCount-1; i++)
      {
        //Set class break
        m_classBreaksRenderer.set_Break(i,currentBreak);
        //Create simple fill symbol and set color
        simpleFillSymbol = new SimpleFillSymbolClass();
        simpleFillSymbol.Color = enumColors.Next();
        //Add symbol to renderer
        m_classBreaksRenderer.set_Symbol(i, (ISymbol)simpleFillSymbol);
        currentBreak += interval;
      }

      //Hide the form
      this.Hide();
    }


    private void button3_Click(object sender, System.EventArgs e)
    {
      this.Hide();
    }

    
    private void textBox1_Leave(object sender, System.EventArgs e)
    {
      IColorRamp colorRamp = (IColorRamp) m_styleGalleryItem.Item;

      //Ensure is numeric
      if (IsInteger(textBox1.Text) == false) 
      {
        System.Windows.Forms.MessageBox.Show("Must be a numeric!");
        textBox1.Text = "10";
        return;
      }
      else if (Convert.ToInt32(textBox1.Text) <= 0)
      {
        //Ensure is not zero
        System.Windows.Forms.MessageBox.Show("Must be greater than 0!");
        textBox1.Text = "10";
        return;
      }
      else if (Convert.ToInt32(textBox1.Text) > colorRamp.Size)
      {
        //Ensure does not exceed number of colors in color ramp
        System.Windows.Forms.MessageBox.Show("Must be less than " + colorRamp.Size + "!");
        textBox1.Text = "10";
        return;
      }

    }

    private void comboBox1_SelectedIndexChanged(object sender, System.EventArgs e)
    {
      //Find the selected field in the feature layer
      IFeatureClass featureClass = m_featureLayer.FeatureClass;
      IField field = featureClass.Fields.get_Field(featureClass.FindField(comboBox1.Text));

      //Get a feature cursor
      ICursor cursor = (ICursor) m_featureLayer.Search(null, false);

      //Create a DataStatistics object and initialize properties
      IDataStatistics dataStatistics = new DataStatisticsClass();
      dataStatistics.Field = field.Name;
      dataStatistics.Cursor = cursor;

      //Get the result statistics
      IStatisticsResults statisticsResults = dataStatistics.Statistics;

      //Set the values min and max values
      textBox2.Text = statisticsResults.Minimum.ToString();
      textBox3.Text = statisticsResults.Maximum.ToString();
      textBox1.Text = "10";
    }  

    public IClassBreaksRenderer GetClassBreaksRenderer(IFeatureLayer featureLayer)
    {    
      m_featureLayer = featureLayer;

      comboBox1.Items.Clear();

      //Add numeric fields names to the combobox
      IFields fields = m_featureLayer.FeatureClass.Fields;
      for (int i = 0; i<=fields.FieldCount-1; i++)
      {
        if ((fields.get_Field(i).Type == esriFieldType.esriFieldTypeDouble) ||
          (fields.get_Field(i).Type == esriFieldType.esriFieldTypeInteger) ||
          (fields.get_Field(i).Type == esriFieldType.esriFieldTypeSingle) ||
          (fields.get_Field(i).Type == esriFieldType.esriFieldTypeSmallInteger) )
        {
          comboBox1.Items.Add(fields.get_Field(i).Name);
        }
      }
      comboBox1.SelectedIndex = 0;

      //Show form modally and wait for user input
      this.ShowDialog();

      //Return the ClassBreaksRenderer
      return m_classBreaksRenderer;
    }

    private void axSymbologyControl1_OnItemSelected(object sender, ESRI.ArcGIS.Controls.ISymbologyControlEvents_OnItemSelectedEvent e)
    {
      //Get the selected item
      m_styleGalleryItem = (IStyleGalleryItem) e.styleGalleryItem;
    }

    public bool IsInteger(string s)
    {
      try 
      {
        Int32.Parse(s);
      }
      catch 
      {
        return false;
      }
      return true;
    }


  }
}