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ThinkGeo Cloud
ThinkGeo UI Controls
ThinkGeo Open Source
Help and Support
External Resources
using System; using System.Collections.Generic; using System.Linq; using System.Windows.Forms; namespace WatermarkAdornmentLayer { 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()); } } }
using System; using System.Drawing; using System.Windows.Forms; using ThinkGeo.MapSuite.Core; namespace WatermarkAdornmentLayer { public partial class TestForm : Form { private MapEngine mapEngine = new MapEngine(); private Bitmap bitmap = null; ShapeFileFeatureLayer worldLayer = null; public TestForm() { InitializeComponent(); } private void TestForm_Load(object sender, EventArgs e) { // Set the full extent and the background color mapEngine.CurrentExtent = ExtentHelper.GetDrawingExtent(new RectangleShape(-180.0, 83.0, 180.0, -90.0), Map.Width, Map.Height); mapEngine.BackgroundFillBrush = new GeoSolidBrush(GeoColor.GeographicColors.ShallowOcean); // Add the static layers to the MapEngine worldLayer = new ShapeFileFeatureLayer(@"..\..\Data\Countries02.shp", ShapeFileReadWriteMode.ReadOnly); worldLayer.ZoomLevelSet.ZoomLevel01.DefaultAreaStyle = AreaStyles.County1; worldLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20; mapEngine.StaticLayers.Add("WorldLayer", worldLayer); // Add the watermarkLayer to the MapEngine WatermarkAdornmentLayer watermarkLayer = new WatermarkAdornmentLayer(); mapEngine.StaticLayers.Add("WatermarkLayer", watermarkLayer); DrawImage(); } 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": 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(); } } }
using System.Collections.ObjectModel; using ThinkGeo.MapSuite.Core; namespace WatermarkAdornmentLayer { public class WatermarkAdornmentLayer : AdornmentLayer { private string watermarkText = string.Empty; public WatermarkAdornmentLayer() : this("Watermark") { } public WatermarkAdornmentLayer(string watermarkText) : base() { this.watermarkText = watermarkText; } public string WatermarkText { get { return watermarkText; } set { watermarkText = value; } } protected override void DrawCore(GeoCanvas canvas, Collection<SimpleCandidate> labelsInAllLayers) { GeoFont font = new GeoFont("Arial", 12); GeoBrush brush = new GeoSolidBrush(GeoColor.StandardColors.Pink); Collection<ScreenPointF> textPath = new Collection<ScreenPointF>(); int interval = 100; if (canvas.Width > interval) { for (int x = 1; x < canvas.Width / interval; x++) { for (int y = 1; y < canvas.Height / interval; y++) { textPath.Add(new ScreenPointF(x * interval, y * interval)); } } } else { textPath.Add(new ScreenPointF(canvas.Width / 2, canvas.Height / 2)); } canvas.DrawText(watermarkText, font, brush, textPath, DrawingLevel.LevelOne); } } }