====== Source Code ServicesEditionSample Compass CS 090820.zip ======
====CompassAdornmentLayer.cs====
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;
using ThinkGeo.MapSuite.Core;
namespace Compass
{
public enum Position { UpperLeft, UpperRight, LowerLeft, LowerRight };
//This class accepts two images. One image for the needle (north arrow) and another optional image for
//the frame of the compass. Typically, we want to have an image for the frame representing the angles (in degrees or other units)
//representing to what angle the map is rotated. We could have a regular frame as in a traditional compass.
//The image for the frame stays fixed as the map rotates whereas the image for the needle rotates with the map to always point
//to the north.
class CompassAdornmentLayer : AdornmentLayer
{
GeoImage needleImage = null;
GeoImage frameImage = null;
Position position;
int sizePercentage;
float rotateAngle;
//Use that constructor with only one image for the needle (will work as a simple north arrow)
public CompassAdornmentLayer(GeoImage needleImage, Position position, int sizePercentage)
{
this.needleImage = needleImage;
this.position = position;
this.sizePercentage = sizePercentage;
}
//Use that constructor with both images for needle and frame of the compass.
public CompassAdornmentLayer(GeoImage needleImage, GeoImage frameImage, Position position, int sizePercentage)
{
this.needleImage = needleImage;
this.frameImage = frameImage;
this.position = position;
this.sizePercentage = sizePercentage;
}
public GeoImage NeedleImage
{
get { return needleImage; }
set { needleImage = value; }
}
public GeoImage FrameImage
{
get { return frameImage; }
set { frameImage = value; }
}
//We needs to update that property as the map rotates to have the needle showing the north accurately.
public float RotateAngle
{
get { return rotateAngle; }
set { rotateAngle = value; }
}
public Position Position
{
get { return position; }
set { position = value;}
}
public int SizePercentage
{
get { return sizePercentage; }
set { sizePercentage = value; }
}
protected override void DrawCore(GeoCanvas canvas, Collection labelsInAllLayers)
{
//Draws the scaled images of needle and frame images according to the percentage size. For example with a PercentageSize of 80,
//the compass size will be 80% of the size of needle image.
//Sets the position of the compass.
int margin = 10;
int Xloc = 0;
int Yloc = 0;
int imageWidth = (sizePercentage * needleImage.GetWidth()) / 100;
int imageHeight = (sizePercentage * needleImage.GetHeight()) / 100;
switch (position)
{
case Position.UpperLeft:
Xloc = (imageWidth /2)+ margin;
Yloc = (imageHeight / 2) + margin;
break;
case Position.UpperRight:
Xloc = ((int)canvas.Width -(imageWidth /2)) - margin;
Yloc = (imageHeight / 2) + margin;
break;
case Position.LowerLeft:
Xloc = (imageWidth / 2) + margin;
Yloc = ((int)canvas.Height - (imageHeight / 2)) - margin;
break;
case Position.LowerRight:
Xloc = ((int)canvas.Width - (imageWidth / 2)) - margin;
Yloc = ((int)canvas.Height - (imageHeight / 2)) - margin;
break;
}
//Draws the needle image at the size according to the percentage size and rotate the image according to RotateAngle property.
canvas.DrawScreenImage(needleImage, Xloc, Yloc, imageWidth, imageHeight, DrawingLevel.LevelFour, 0, 0, rotateAngle);
//If the frame image has been set, draws image at the size according to the percentage size with no rotation.
if (frameImage != null)
{
canvas.DrawScreenImage(frameImage, Xloc, Yloc, imageWidth, imageHeight, DrawingLevel.LevelFour, 0, 0, 0);
}
}
}
}
====Program.cs====
using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows.Forms;
namespace Compass
{
static class Program
{
///
/// The main entry point for the application.
///
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new TestForm());
}
}
}
====TestForm.cs====
using System;
using System.Drawing;
using System.Windows.Forms;
using ThinkGeo.MapSuite.Core;
namespace Compass
{
public partial class TestForm : Form
{
private MapEngine mapEngine = new MapEngine();
private Bitmap bitmap = null;
private RotationProjection rotateProjection = new RotationProjection();
public TestForm()
{
InitializeComponent();
}
private void TestForm_Load(object sender, EventArgs e)
{
mapEngine.CurrentExtent = ExtentHelper.GetDrawingExtent(new RectangleShape(-66.8581, 10.4995, -66.8456, 10.4915), Map.Width, Map.Height);
mapEngine.BackgroundFillBrush = new GeoSolidBrush(GeoColor.FromArgb(255, 233, 232, 214));
//Loads all the backgrounds layers for street, street label, park and park label.
LoadBackgroundLayers();
//Makes sure all the layers have the Projection property set to RotationProjection.
foreach (FeatureLayer Layer in mapEngine.StaticLayers)
{
Layer.FeatureSource.Projection = rotateProjection;
}
//Gets the image for the needle of the compass that will rotate with the map.
GeoImage needleImage = new GeoImage(@"..\..\Data\compass_needle_letters_disc.png");
//Gets the image for the frame of the compass that will stay fixed.
GeoImage frameImage = new GeoImage(@"..\..\Data\compass_circle_digits.png");
//Passes the images, the position on the map and the size of the compass in percentage to the size of the needle image.
CompassAdornmentLayer compassAdornmentLayer = new CompassAdornmentLayer(needleImage, frameImage, Position.UpperLeft, 80);
//Adds CompassAdornmentLayer for the compass to the AdormentLayers collection of mapEngine.
mapEngine.AdornmentLayers.Add("MyCompassAdornmentLayer", compassAdornmentLayer);
DrawImage();
}
private void btnClockWise_Click(object sender, EventArgs e)
{
//Sets the Angle property of RotationProjection.Adds 10 to go clockwise.
rotateProjection.Angle = rotateProjection.Angle + 10;
//Sets CurrentExtent of mapEngine according to RotationProjection.
mapEngine.CurrentExtent = rotateProjection.GetUpdatedExtent(mapEngine.CurrentExtent);
//Updates RotateAngle property of CompassAdornmentLayer (Compass) according to the new value of
//Angle property of RotationProjection.
CompassAdornmentLayer compassAdornmentLayer = (CompassAdornmentLayer)mapEngine.AdornmentLayers[0];
compassAdornmentLayer.RotateAngle = (float)rotateProjection.Angle;
DrawImage();
}
private void btnCounterClockWise_Click(object sender, EventArgs e)
{
//Sets the Angle property of RotationProjection.Adds 10 to go clockwise.
rotateProjection.Angle = rotateProjection.Angle - 10;
//Sets CurrentExtent of mapEngine according to RotationProjection.
mapEngine.CurrentExtent = rotateProjection.GetUpdatedExtent(mapEngine.CurrentExtent);
//Updates RotateAngle property of CompassAdornmentLayer (Compass) according to the new value of
//Angle property of RotationProjection.
CompassAdornmentLayer compassAdornmentLayer = (CompassAdornmentLayer) mapEngine.AdornmentLayers[0];
compassAdornmentLayer.RotateAngle = (float)rotateProjection.Angle;
DrawImage();
}
private void DrawImage()
{
if (bitmap != null) { bitmap.Dispose(); }
bitmap = new Bitmap(Map.Width, Map.Height);
mapEngine.OpenAllLayers();
mapEngine.DrawStaticLayers(bitmap, GeographyUnit.DecimalDegree);
mapEngine.DrawAdornmentLayers(bitmap, GeographyUnit.DecimalDegree);
mapEngine.CloseAllLayers();
Map.Image = bitmap;
}
private void LoadBackgroundLayers()
{
ShapeFileFeatureLayer ParksShapeLayer = new ShapeFileFeatureLayer(@"..\..\Data\parks.shp");
ShapeFileFeatureLayer.BuildIndexFile(@"..\..\Data\parks.shp", BuildIndexMode.DoNotRebuild);
ParksShapeLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;
ParksShapeLayer.ZoomLevelSet.ZoomLevel01.DefaultAreaStyle = AreaStyles.Park1;
ShapeFileFeatureLayer ParksLabelLayer = new ShapeFileFeatureLayer(@"..\..\Data\parks.shp");
ParksLabelLayer.RequireIndex = false;
ParksLabelLayer.ZoomLevelSet.ZoomLevel01.DefaultTextStyle = TextStyles.CreateSimpleTextStyle("Name", "Arial", 10, DrawingFontStyles.Bold, GeoColor.StandardColors.SeaGreen, GeoColor.StandardColors.White, 2);
ParksLabelLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;
ShapeFileFeatureLayer StreetsShapeLayer = new ShapeFileFeatureLayer(@"..\..\Data\streets.shp");
ShapeFileFeatureLayer.BuildIndexFile(@"..\..\Data\streets.shp", BuildIndexMode.DoNotRebuild);
StreetsShapeLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;
ValueStyle valueStyle = new ValueStyle();
valueStyle.ColumnName = "Type";
valueStyle.ValueItems.Add(new ValueItem("A", LineStyles.LocalRoad2));
valueStyle.ValueItems.Add(new ValueItem("M", LineStyles.MajorRoad1));
StreetsShapeLayer.ZoomLevelSet.ZoomLevel01.CustomStyles.Add(valueStyle);
StreetsShapeLayer.FeatureSource.Projection = rotateProjection;
ShapeFileFeatureLayer StreetsLabelLayer = new ShapeFileFeatureLayer(@"..\..\Data\streets.shp");
StreetsLabelLayer.RequireIndex = false;
TextStyle textStyle = new TextStyle();
textStyle.TextColumnName = "St_name";
textStyle.TextSolidBrush = new GeoSolidBrush(GeoColor.StandardColors.Black);
textStyle.Font = new GeoFont("Arial", 7);
textStyle.TextLineSegmentRatio = 10;
textStyle.GridSize = 100;
textStyle.SplineType = SplineType.StandardSplining;
textStyle.DuplicateRule = LabelDuplicateRule.OneDuplicateLabelPerQuadrant;
StreetsLabelLayer.ZoomLevelSet.ZoomLevel01.CustomStyles.Add(textStyle);
StreetsLabelLayer.ZoomLevelSet.ZoomLevel01.DefaultTextStyle.GridSize = 5;
StreetsLabelLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;
StreetsLabelLayer.FeatureSource.Projection = rotateProjection;
mapEngine.StaticLayers.Add("ParksShapeLayer", ParksShapeLayer);
mapEngine.StaticLayers.Add("StreetsShapeLayer", StreetsShapeLayer);
mapEngine.StaticLayers.Add("ParksLabelLayer", ParksLabelLayer);
mapEngine.StaticLayers.Add("StreetsLabelLayer", StreetsLabelLayer);
}
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":
mapEngine.CurrentExtent = ExtentHelper.GetDrawingExtent(new RectangleShape(-180.0, 83.0, 180.0, -90.0), 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();
}
}
}