texttool.cs

arcgis server9.2 (graphicElement)图形元素操作

// Copyright 2006 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 use restrictions at /arcgis/developerkit/userestrictions.

using System;
using System.Collections.Generic;
using System.Text;
using System.Web;
using ESRI.ArcGIS.ADF.Web.UI.WebControls;
using ESRI.ArcGIS.ADF.Web.UI.WebControls.Tools;
using ESRI.ArcGIS.ADF.ArcGISServer;
using ESRI.ArcGIS.ADF.Web.DataSources;
using ESRI.ArcGIS.Server;
using System.Collections;
using ESRI.ArcGIS.ADF.Web.DataSources.ArcGISServer;

public class TextTool: IMapServerCommandAction, IMapServerToolAction
{

    #region IServerAction Members

    void IServerAction.ServerAction(ToolbarItemInfo info)
    {
        ESRI.ArcGIS.ADF.Web.UI.WebControls.Map mapctrl = (ESRI.ArcGIS.ADF.Web.UI.WebControls.Map)info.BuddyControls[0];

        MapFunctionality mf = (MapFunctionality)mapctrl.GetFunctionality(0);
        ESRI.ArcGIS.ADF.ArcGISServer.MapDescription mapDescription = mf.MapDescription;

        ESRI.ArcGIS.ADF.Web.Geometry.Point adf_map_point = ESRI.ArcGIS.ADF.Web.Geometry.Point.ToMapPoint(200, 200, mapctrl.Extent, mf.DisplaySettings.ImageDescriptor.Width, mf.DisplaySettings.ImageDescriptor.Height);

        PointN ags_map_point = ESRI.ArcGIS.ADF.Web.DataSources.ArcGISServer.Converter.FromAdfPoint(adf_map_point);

        TextElement text = new TextElement();
        text.TextGeometry = ags_map_point;
        TextSymbol textSymbol = new TextSymbol();

        ESRI.ArcGIS.ADF.ArcGISServer.RgbColor rgb = new ESRI.ArcGIS.ADF.ArcGISServer.RgbColor();
        rgb.Red = 0;
        rgb.Green = 0;
        rgb.Blue = 255;
        rgb.AlphaValue = 255;

        textSymbol.Color = rgb;
        textSymbol.Size = 10;
        textSymbol.FontName = "Arial";
        text.Symbol = textSymbol;
        text.Scale = true;
        text.Text = "COMMAND";

        if (mapDescription.CustomGraphics != null)
        {
            GraphicElement[] oldges = mapDescription.CustomGraphics;
            int cnt = oldges.Length;
            GraphicElement[] newges = new GraphicElement[cnt + 1];
            oldges.CopyTo(newges, 0);
            newges[cnt] = text;
            mapDescription.CustomGraphics = newges;
        }
        else
        {
            GraphicElement[] ges = new GraphicElement[1];
            ges[0] = text;
            mapDescription.CustomGraphics = ges;
        }

        mapctrl.Refresh();
    }

    #endregion

    #region IMapServerToolAction Members

    public void ServerAction(ToolEventArgs args)
    {
        ESRI.ArcGIS.ADF.Web.UI.WebControls.Map mapctrl;
        mapctrl = (ESRI.ArcGIS.ADF.Web.UI.WebControls.Map)args.Control;

        PointEventArgs pea = (PointEventArgs)args;
        System.Drawing.Point screen_point = pea.ScreenPoint;

        MapFunctionality mf = (MapFunctionality)mapctrl.GetFunctionality(0);

        ESRI.ArcGIS.ADF.ArcGISServer.MapDescription mapDescription = mf.MapDescription;

        ESRI.ArcGIS.ADF.Web.Geometry.Point adf_map_point = ESRI.ArcGIS.ADF.Web.Geometry.Point.ToMapPoint(screen_point, mapctrl.Extent, mf.DisplaySettings.ImageDescriptor.Width, mf.DisplaySettings.ImageDescriptor.Height);

        PointN ags_map_point = ESRI.ArcGIS.ADF.Web.DataSources.ArcGISServer.Converter.FromAdfPoint(adf_map_point);


        TextElement text = new TextElement();
        text.TextGeometry = ags_map_point;
        TextSymbol textSymbol = new TextSymbol();

        ESRI.ArcGIS.ADF.ArcGISServer.RgbColor rgb = new ESRI.ArcGIS.ADF.ArcGISServer.RgbColor();
        rgb.Red = 255;
        rgb.Green = 0;
        rgb.Blue = 0;
        rgb.AlphaValue = 255;

        textSymbol.Color = rgb;
        textSymbol.Size = 10;
        textSymbol.FontName = "Tahoma";
        text.Symbol = textSymbol;
        text.Scale = true;
        text.Text = "TOOL";

        if (mapDescription.CustomGraphics != null)
        {
            GraphicElement[] oldges = mapDescription.CustomGraphics;
            int cnt = oldges.Length;
            GraphicElement[] newges = new GraphicElement[cnt + 1];
            oldges.CopyTo(newges, 0);
            newges[cnt] = text;
            mapDescription.CustomGraphics = newges;
        }
        else
        {
            GraphicElement[] ges = new GraphicElement[1];
            ges[0] = text;
            mapDescription.CustomGraphics = ges;
        }

        mapctrl.Refresh();
    }

    #endregion
}