PieThemeSample
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///////////////////////////////////////////////////////////////////////////////
//
// (c) Pitney Bowes MapInfo Corporation, 2008. All rights reserved.
//
// The source code below is provided as sample code only. The end user of the
// Licensed Product that contains this code may use the code below for
// development purposes. This software is provided by Pitney Bowes MapInfo
// "as is" and any express or implied warranties, including, but not limited
// to, the implied warranties of merchantability and fitness for a particular
// purpose are disclaimed. In no event shall Pitney Bowes MapInfo be liable
// for any direct, indirect, incidental, special, exemplary, or consequential
// damages (including, but not limited to, procurement of substitute goods or
// services; loss of use, data or profits; or business interruption) however
// caused and whether in contract, strict liability, or tort (including
// negligence) arising in any way out of the use of this software, even if
// advised of the possibility of such damage.
//
///////////////////////////////////////////////////////////////////////////////
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.IO;
using System.Reflection;
using MapInfo.Data;
using MapInfo.Mapping;
using MapInfo.Engine;
using MapInfo.Windows.Dialogs;
using MapInfo.Mapping.Thematics;
namespace PieThemeSample
{
/// <summary>
/// Summary description for MapForm1.
/// </summary>
public class MapForm1 : System.Windows.Forms.Form
{
private MapInfo.Windows.Controls.MapControl mapControl1;
private System.Windows.Forms.Panel panel1;
private System.Windows.Forms.StatusBar statusBar1;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.CheckedListBox fields;
private System.Windows.Forms.ComboBox layers;
private System.Windows.Forms.Label label2;
internal MapInfo.Windows.Controls.MapToolBar mapToolBar1;
internal MapInfo.Windows.Controls.MapToolBarButton mapToolBarButtonOpenTable;
private MapInfo.Windows.Controls.MapToolBarButton mapToolBarButtonLayerControl;
internal System.Windows.Forms.ToolBarButton toolBarButtonSeparator;
internal MapInfo.Windows.Controls.MapToolBarButton mapToolBarButtonSelect;
internal MapInfo.Windows.Controls.MapToolBarButton mapToolBarButtonZoomIn;
internal MapInfo.Windows.Controls.MapToolBarButton mapToolBarButtonZoomOut;
internal MapInfo.Windows.Controls.MapToolBarButton mapToolBarButtonPan;
private System.ComponentModel.Container components = null;
public MapForm1()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
// Listen to the right map event to allow the status bar Zoom level to be updated
mapControl1.Map.ViewChangedEvent += new ViewChangedEventHandler(Map_ViewChanged);
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
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()
{
this.mapControl1 = new MapInfo.Windows.Controls.MapControl();
this.panel1 = new System.Windows.Forms.Panel();
this.statusBar1 = new System.Windows.Forms.StatusBar();
this.label1 = new System.Windows.Forms.Label();
this.fields = new System.Windows.Forms.CheckedListBox();
this.layers = new System.Windows.Forms.ComboBox();
this.label2 = new System.Windows.Forms.Label();
this.mapToolBar1 = new MapInfo.Windows.Controls.MapToolBar();
this.mapToolBarButtonOpenTable = new MapInfo.Windows.Controls.MapToolBarButton();
this.mapToolBarButtonLayerControl = new MapInfo.Windows.Controls.MapToolBarButton();
this.toolBarButtonSeparator = new System.Windows.Forms.ToolBarButton();
this.mapToolBarButtonSelect = new MapInfo.Windows.Controls.MapToolBarButton();
this.mapToolBarButtonZoomIn = new MapInfo.Windows.Controls.MapToolBarButton();
this.mapToolBarButtonZoomOut = new MapInfo.Windows.Controls.MapToolBarButton();
this.mapToolBarButtonPan = new MapInfo.Windows.Controls.MapToolBarButton();
this.panel1.SuspendLayout();
this.SuspendLayout();
//
// mapControl1
//
this.mapControl1.Dock = System.Windows.Forms.DockStyle.Fill;
this.mapControl1.Location = new System.Drawing.Point(0, 0);
this.mapControl1.Name = "mapControl1";
this.mapControl1.Size = new System.Drawing.Size(296, 244);
this.mapControl1.TabIndex = 0;
this.mapControl1.Text = "mapControl1";
this.mapControl1.Tools.MiddleButtonTool = null;
//
// panel1
//
this.panel1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.panel1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
this.panel1.Controls.Add(this.mapControl1);
this.panel1.Location = new System.Drawing.Point(4, 40);
this.panel1.Name = "panel1";
this.panel1.Size = new System.Drawing.Size(300, 248);
this.panel1.TabIndex = 1;
//
// statusBar1
//
this.statusBar1.Location = new System.Drawing.Point(0, 291);
this.statusBar1.Name = "statusBar1";
this.statusBar1.Size = new System.Drawing.Size(520, 19);
this.statusBar1.TabIndex = 2;
//
// label1
//
this.label1.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
this.label1.Location = new System.Drawing.Point(320, 38);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(168, 16);
this.label1.TabIndex = 5;
this.label1.Text = "Layers:";
//
// fields
//
this.fields.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Right)));
this.fields.CheckOnClick = true;
this.fields.Location = new System.Drawing.Point(320, 94);
this.fields.Name = "fields";
this.fields.Size = new System.Drawing.Size(184, 184);
this.fields.TabIndex = 6;
this.fields.ItemCheck += new System.Windows.Forms.ItemCheckEventHandler(this.fields_ItemCheckChanged);
//
// layers
//
this.layers.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
this.layers.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
this.layers.Location = new System.Drawing.Point(320, 54);
this.layers.Name = "layers";
this.layers.Size = new System.Drawing.Size(184, 21);
this.layers.TabIndex = 7;
//
// label2
//
this.label2.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
this.label2.Location = new System.Drawing.Point(320, 78);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(168, 16);
this.label2.TabIndex = 8;
this.label2.Text = "Fields:";
//
// mapToolBar1
//
this.mapToolBar1.Buttons.AddRange(new System.Windows.Forms.ToolBarButton[] {
this.mapToolBarButtonOpenTable,
this.mapToolBarButtonLayerControl,
this.toolBarButtonSeparator,
this.mapToolBarButtonSelect,
this.mapToolBarButtonZoomIn,
this.mapToolBarButtonZoomOut,
this.mapToolBarButtonPan});
this.mapToolBar1.Divider = false;
this.mapToolBar1.Dock = System.Windows.Forms.DockStyle.None;
this.mapToolBar1.DropDownArrows = true;
this.mapToolBar1.Location = new System.Drawing.Point(6, 8);
this.mapToolBar1.MapControl = this.mapControl1;
this.mapToolBar1.Name = "mapToolBar1";
this.mapToolBar1.ShowToolTips = true;
this.mapToolBar1.Size = new System.Drawing.Size(160, 26);
this.mapToolBar1.TabIndex = 9;
//
// mapToolBarButtonOpenTable
//
this.mapToolBarButtonOpenTable.ButtonType = MapInfo.Windows.Controls.MapToolButtonType.OpenTable;
this.mapToolBarButtonOpenTable.ToolTipText = "Open Table";
//
// mapToolBarButtonLayerControl
//
this.mapToolBarButtonLayerControl.ButtonType = MapInfo.Windows.Controls.MapToolButtonType.LayerControl;
this.mapToolBarButtonLayerControl.ToolTipText = "Layer Control";
//
// toolBarButtonSeparator
//
this.toolBarButtonSeparator.Style = System.Windows.Forms.ToolBarButtonStyle.Separator;
//
// mapToolBarButtonSelect
//
this.mapToolBarButtonSelect.ButtonType = MapInfo.Windows.Controls.MapToolButtonType.Select;
this.mapToolBarButtonSelect.ToolTipText = "Select";
//
// mapToolBarButtonZoomIn
//
this.mapToolBarButtonZoomIn.ButtonType = MapInfo.Windows.Controls.MapToolButtonType.ZoomIn;
this.mapToolBarButtonZoomIn.ToolTipText = "Zoom-in";
//
// mapToolBarButtonZoomOut
//
this.mapToolBarButtonZoomOut.ButtonType = MapInfo.Windows.Controls.MapToolButtonType.ZoomOut;
this.mapToolBarButtonZoomOut.ToolTipText = "Zoom-out";
//
// mapToolBarButtonPan
//
this.mapToolBarButtonPan.ButtonType = MapInfo.Windows.Controls.MapToolButtonType.Pan;
this.mapToolBarButtonPan.ToolTipText = "Pan";
//
// MapForm1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(520, 310);
this.Controls.Add(this.mapToolBar1);
this.Controls.Add(this.label2);
this.Controls.Add(this.layers);
this.Controls.Add(this.fields);
this.Controls.Add(this.label1);
this.Controls.Add(this.statusBar1);
this.Controls.Add(this.panel1);
this.MinimumSize = new System.Drawing.Size(250, 200);
this.Name = "MapForm1";
this.Text = "Pie Theme Sample";
this.Load += new System.EventHandler(this.MapForm1_Load);
this.panel1.ResumeLayout(false);
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new MapForm1());
}
// Handler function called when the active map's view changes
private void Map_ViewChanged(object o, ViewChangedEventArgs e) {
// Get the map
MapInfo.Mapping.Map map = (MapInfo.Mapping.Map) o;
// Display the zoom level
Double dblZoom = System.Convert.ToDouble(String.Format("{0:E2}", mapControl1.Map.Zoom.Value));
statusBar1.Text = "Zoom: " + dblZoom.ToString() + " " + mapControl1.Map.Zoom.Unit.ToString();
}
private void MapForm1_Load(object sender, System.EventArgs e)
{
// Set table search path to value sampledatasearch registry key
// if not found, then just use the app's current directory
Microsoft.Win32.RegistryKey key = Microsoft.Win32.Registry.LocalMachine.CreateSubKey(@"SOFTWARE\MapInfo\MapXtreme\6.8.0");
string s = (string)key.GetValue("SampleDataSearchPath");
if (s != null && s.Length > 0)
{
if (s.EndsWith("\\")==false)
{
s += "\\";
}
}
else
{
s = Environment.CurrentDirectory;
}
key.Close();
Session.Current.TableSearchPath.Path = s;
// Listen to the layers added event so that we can refresh the
//
mapControl1.Map.Layers.Added +=new CollectionEventHandler(Layers_Added);
mapControl1.Map.Layers.Removed += new CollectionEventHandler(Layers_Removed);
layers.SelectedValueChanged +=new EventHandler(layers_SelectedValueChanged);
}
private void Layers_Added(object sender, CollectionEventArgs e)
{
layers.Items.Insert(e.Position, e.Item);
if(layers.Items.Count == 1)
{
layers.SelectedItem = e.Item;
}
}
private void Layers_Removed(object sender, CollectionEventArgs e)
{
if(e.Item == layers.SelectedItem)
{
fields.Items.Clear();
DeletePieThemeLayer();
layers.SelectedIndex = (layers.SelectedIndex > 0)? layers.SelectedIndex - 1 : (layers.Items.Count > 1)? 1 : -1;
}
layers.Items.Remove(e.Item);
}
private void layers_SelectedValueChanged(object sender, EventArgs e)
{
fields.Items.Clear();
DeletePieThemeLayer();
FeatureLayer selected = layers.SelectedItem as FeatureLayer;
if(selected != null)
{
foreach(MapInfo.Data.Column column in selected.Table.TableInfo.Columns)
{
if(column.Alias != "Obj" && column.Alias != "MI_Style")
{
fields.Items.Add(column.Alias, CheckState.Unchecked);
}
}
}
}
private void fields_ItemCheckChanged(object sender, System.Windows.Forms.ItemCheckEventArgs e)
{
DeletePieThemeLayer();
switch(e.NewValue)
{
case CheckState.Checked:
try
{
AddPieTheme(e.Index);
}
catch(Exception ex)
{
//Catch any/all exceptions thrown while processing the event.
// First display a message box with the error message
System.Windows.Forms.MessageBox.Show("Error: \n" + ex.Message, "Pie Theme Error");
// Remove what we tried to add from the theme, getting back the original theme
// before the error was caused
RemovePieTheme(e.Index);
// Make sure that the check box is still unchecked
e.NewValue = CheckState.Unchecked;
}
break;
case CheckState.Unchecked:
RemovePieTheme(e.Index);
break;
case CheckState.Indeterminate:
break;
default:
break;
}
}
private void DeletePieThemeLayer()
{
// Remove previous themes:
MapLayerEnumerator e = mapControl1.Map.Layers.GetMapLayerEnumerator(MapLayerFilterFactory.FilterByType(typeof(ObjectThemeLayer)));
while(e.MoveNext())
{
mapControl1.Map.Layers.Remove(e.Current);
e = mapControl1.Map.Layers.GetMapLayerEnumerator(MapLayerFilterFactory.FilterByType(typeof(ObjectThemeLayer)));
}
}
private ArrayList GetThemeFieldList(int removeIndex, int addIndex)
{
ArrayList list = new ArrayList();
// Collect list of columns to use:
if (addIndex >= 0) list.Add(fields.Items[addIndex]); // Add a new one?
for(int i=0; i < fields.Items.Count; i++)
{
if(fields.GetItemCheckState(i) == CheckState.Checked)
{
if (i != removeIndex) // make sure it isn't being removed
list.Add(fields.Items[i]);
}
}
return list;
}
private void RemovePieTheme(int removeIndex)
{
ArrayList list = GetThemeFieldList(removeIndex, -1);
ShowThemeLayer(list);
}
private void AddPieTheme(int addIndex)
{
ArrayList list = GetThemeFieldList(-1, addIndex);
ShowThemeLayer(list);
}
private void ShowThemeLayer(ArrayList list)
{
FeatureLayer selected = layers.SelectedItem as FeatureLayer;
// If there are any, then add the theme:
if (selected != null)
{
if(list.Count > 0)
{
PieTheme theme = new PieTheme(
mapControl1.Map,
selected.Table,
(string[])list.ToArray(typeof(string))
);
ObjectThemeLayer themeLayer = new ObjectThemeLayer(
"World Pop Growth Rate", null, theme);
mapControl1.Map.Layers.Add(themeLayer);
theme.DataValueAtSize *= 2;
theme.GraduateSizeBy = GraduateSizeBy.Constant;
themeLayer.RebuildTheme();
}
}
}
}
}
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PieThemeSample 
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