User Tools

Site Tools

Trace: • source_code_serviceseditionsample_zoomtofullextent_cs_100415.zip

Sidebar

ThinkGeo Cloud

ThinkGeo UI Controls

ThinkGeo Open Source

Help and Support

External Resources

source_code_serviceseditionsample_zoomtofullextent_cs_100415.zip

This is an old revision of the document!

Table of Contents

Source_Code_ServicesEditionSample_ZoomToFullExtent_CS_100415.zip

<noinclude>article_rating</noinclude>

Program.cs

Code
<source lang=“csharp” line=“1”>using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows.Forms;

namespace ZoomToFullExtent
{
static class Program
{
/// <summary>
/// The main entry point for the application.
/// </summary>
STAThread
static void Main()
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new TestForm());
}
}
}
</source>

TestForm.cs

Code
<source lang=“csharp” line=“1”>using System;
using System.Collections.ObjectModel;
using System.Drawing;
using System.Windows.Forms;
using ThinkGeo.MapSuite.Core;

namespace ZoomToFullExtent
{
public partial class TestForm : Form
{
private MapEngine mapEngine = new MapEngine();
private Bitmap bitmap = null;

public TestForm()
{
InitializeComponent();
}

private void TestForm_Load(object sender, EventArgs e)
{
// Sets the extent and the background color
mapEngine.CurrentExtent = ExtentHelper.GetDrawingExtent(new RectangleShape(-98.89,27.74,-56.97,6.78), Map.Width, Map.Height);
mapEngine.BackgroundFillBrush = new GeoSolidBrush(GeoColor.GeographicColors.ShallowOcean);

//Displays the World Map Kit as a background.
ThinkGeo.MapSuite.Core.WorldMapKitLayer worldMapKitLayer = new ThinkGeo.MapSuite.Core.WorldMapKitLayer();
mapEngine.StaticLayers.Add(worldMapKitLayer);

//Adds countries and capitals shapefiles.
ShapeFileFeatureLayer Layer1 = new ShapeFileFeatureLayer(@“..\..\Data\countries02.shp”);
Layer1.ZoomLevelSet.ZoomLevel01.DefaultAreaStyle = AreaStyles.Country2;
Layer1.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;

ShapeFileFeatureLayer Layer2 = new ShapeFileFeatureLayer(@“..\..\Data\worldcapitals.shp”);
Layer2.ZoomLevelSet.ZoomLevel01.DefaultPointStyle = PointStyles.Capital1;
Layer2.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;

mapEngine.StaticLayers.Add(Layer1);
mapEngine.StaticLayers.Add(Layer2);


DrawImage();
}

//Function for getting the extent based on a collection of layers.
//It gets the overall extent of all the layers.
private RectangleShape GetFullExtent(GeoCollection<Layer> Layers)
{
Collection<BaseShape> rectangleShapes = new Collection<BaseShape>();

foreach (Layer layer in Layers)
{
layer.Open();
if (layer.HasBoundingBox == true) rectangleShapes.Add(layer.GetBoundingBox());
}
return ExtentHelper.GetBoundingBoxOfItems(rectangleShapes);
}


private void DrawImage()
{
if (bitmap != null) { bitmap.Dispose(); }
bitmap = new Bitmap(Map.Width, Map.Height);
mapEngine.OpenAllLayers();
mapEngine.DrawStaticLayers(bitmap, GeographyUnit.DecimalDegree);
mapEngine.CloseAllLayers();

Map.Image = bitmap;
}

private void ToolBar_ButtonClick(object sender, ToolBarButtonClickEventArgs e)
{
switch (e.Button.Tag.ToString())
{
case “Zoom In”:
mapEngine.CurrentExtent.ScaleDown(50);
break;
case “Zoom Out”:
mapEngine.CurrentExtent.ScaleUp(50);
break;
case “Full Extent”:
//Sets the current extent according to the overall extent of the static layers.
mapEngine.CurrentExtent = ExtentHelper.GetDrawingExtent(GetFullExtent(mapEngine.StaticLayers), Map.Width,Map.Height);
break;
case “Pan Left”:
mapEngine.CurrentExtent = ExtentHelper.Pan(mapEngine.CurrentExtent, PanDirection.Left, 20);
break;
case “Pan Right”:
mapEngine.CurrentExtent = ExtentHelper.Pan(mapEngine.CurrentExtent, PanDirection.Right, 20);
break;
case “Pan Up”:
mapEngine.CurrentExtent = ExtentHelper.Pan(mapEngine.CurrentExtent, PanDirection.Up, 20);
break;
case “Pan Down”:
mapEngine.CurrentExtent = ExtentHelper.Pan(mapEngine.CurrentExtent, PanDirection.Down, 20);
break;
default:
break;
}
DrawImage();
}

private void btnClose_Click(object sender, EventArgs e)
{
this.Close();
}

private void Map_MouseMove(object sender, MouseEventArgs e)
{
//Displays the X and Y in screen coordinates.
statusStrip1.Items"toolStripStatusLabelScreen".Text = “X:” + e.X + “ Y:” + e.Y;

//Gets the PointShape in world coordinates from screen coordinates.
PointShape pointShape = ExtentHelper.ToWorldCoordinate(mapEngine.CurrentExtent, new ScreenPointF(e.X, e.Y), Map.Width, Map.Height);

//Displays world coordinates.
statusStrip1.Items"toolStripStatusLabelWorld".Text = “(world) X:” + Math.Round(pointShape.X, 4) + “ Y:” + Math.Round(pointShape.Y, 4);
}
}
}
</source>
source_code_serviceseditionsample_zoomtofullextent_cs_100415.zip.1440040126.txt.gz · Last modified: 2015/09/08 05:41 (external edit)

Page Tools