[转] ArcGIS engine中气泡标注的添加、修改

2022-02-28 11:41:11

　　你微微地笑着，不同我说什么话。而我觉得，为了这个，我已等待得久了。

　　　　 ——泰戈尔

　　喜欢看你微微的笑着，哪怕你一句话都不说，看见你笑，仿佛四季如春……笑，蕴含着着一种信任，一种安全，一种爱护，一种宽容，一种心灵的感应……宝贝，朝我笑笑，好么？

　　生活本已是一杯苦酒，我们何不笑着饮下？一颗感恩的心，一颗热爱生活的心，爱惜那些值得爱的人，一起欢乐，一起将各自生活的苦酒淡化，每天都让我们灿烂的笑……

　　不要认为后面还有更好的，因为现在拥有的就是最好的。不要因为距离太远而放弃，爱情可以和你一起坐火车的。不要因为对方不富裕而放弃，只要不是无能的人，勤劳可以让你们富裕的。不要因为父母反对而放弃，你会发现因为这个原因而反放弃的爱情，将是你一生的悔恨。其实对于爱情，越单纯越幸福。一生只谈一次恋爱是最好的，经历的太多了，会麻木；分离多了，会习惯；换恋人多了，会比较；到最后，你不会再相信爱情；你会自暴自弃；你会行尸走肉；你会与你不爱的人结婚，就这样过一辈子。

　　ArcGIS engine中气泡标注，是我们在编辑图形中一个重要的工具，能提供注释功能，下面的介绍怎么来编程实现callout的添加，以及怎么去修改它们！

//  在Mapcontrol的mouseDown中添加下列内容，来添加气泡注释功能：callout.

 private void axMapControl1_OnMouseDown(object sender, IMapControlEvents2_OnMouseDownEvent e)

        {

                    axMapControl1.CurrentTool = null;
 
                    IPoint pPoint ;

                    pPoint = new PointClass();

                    pPoint.PutCoords(e.mapX, e.mapY);

                    IFormattedTextSymbol pTextSymbol = new TextSymbolClass();

                    pTextSymbol.Background = CreateBalloonCallout(e.mapX, e.mapY) as ITextBackground;

                    pTextSymbol.Direction = esriTextDirection.esriTDAngle;

                    pTextSymbol.Angle = 15;
 
                    ITextElement pTextElement = new TextElementClass();

                    pTextElement.Symbol = pTextSymbol as ITextSymbol;
 
                    pTextElement.Text = "MaDeSheng";

                    IElement ptexte = pTextElement as IElement;

                    pPoint = new PointClass();

                    pPoint.PutCoords(e.mapX * 0.90, e.mapY *1.1);

                    ptexte.Geometry = pPoint as IGeometry;
 
                    IMap pMap = axMapControl1.Map;

                    IGraphicsContainer pGraphicsContainer = pMap as IGraphicsContainer;

                    pGraphicsContainer.AddElement(pTextElement as IElement, 0);

                    this.axMapControl1.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);
}

红颜色的部分是产生气泡背景，具体程序如下：

public IBalloonCallout CreateBalloonCallout(double x, double y)

        {
 
            IRgbColor pRgbClr = new RgbColorClass();

            pRgbClr.Red = 225;

            pRgbClr.Blue = 225;

            pRgbClr.Green = 225;

            ISimpleFillSymbol pSmplFill = new SimpleFillSymbolClass();

            pSmplFill.Color = pRgbClr;

            pSmplFill.Style = esriSimpleFillStyle.esriSFSSolid;

            IBalloonCallout pBllnCallout = new BalloonCalloutClass();

            //pBllnCallout.Style = esriBalloonCalloutStyle.esriBCSRectangle;

            pBllnCallout.Style = esriBalloonCalloutStyle.esriBCSRoundedRectangle;

            pBllnCallout.Symbol = pSmplFill;

            pBllnCallout.LeaderTolerance = 5;

            IPoint pPoint = new ESRI.ArcGIS.Geometry.PointClass();

            pPoint.X = x;

            pPoint.Y = y;

            pBllnCallout.AnchorPoint = pPoint;

            return pBllnCallout;

        }

那么添加了之后如何修改呢?

双击事件！

private void axMapControl1_OnDoubleClick(object sender, IMapControlEvents2_OnDoubleClickEvent e)

        {

            if(e.button ==1)

            {

                //标注的修改

                if (((axMapControl1.CurrentTool) as ICommand).Name == "ControlToolsGraphicElement_SelectTool")//这一句的判断很牛B，我当时考虑了半天才搞出来。难点呀！toolbarControl中要加载esriControls.ControlsSelectTool工具

                {

                    IPoint pPoint = new PointClass();

                    pPoint.PutCoords(e.mapX, e.mapY);
 
                    IMap pMap = axMapControl1.Map;

                    IGraphicsContainer pGraphicsContainer = pMap as IGraphicsContainer;

                    IEnumElement pEnumElement = pGraphicsContainer.LocateElements(pPoint, 10);

                    if (pEnumElement != null)

                    {

                        IElement pElement = pEnumElement.Next();

                        if (pElement is ITextElement)

                        {

                            ITextElement ptextElement = pElement as ITextElement;
 
                            labelEditCallout pLabelEditCallout = new labelEditCallout(ptextElement.Text, ptextElement.Symbol);

                            pLabelEditCallout.ShowDialog();
 
                            ptextElement.Text = pLabelEditCallout.inputText;

                            ptextElement.Symbol = pLabelEditCallout.textSymbol;

                            pGraphicsContainer.DeleteElement(pElement);

                            pGraphicsContainer.AddElement(pElement,0);

                         //这两句可以用pGraphicsContainer.UpdataElement(pElement);来代替

                            this.axMapControl1.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);

                        }

                    }
 
                }

            }
 
        }

labelEditCallout是我自己弄的一个修改样式，其实很简单的一个页面，截图如下：

[转] ArcGIS engine中气泡标注的添加、修改

具体，代码如下：

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using ESRI.ArcGIS.Display;

using ESRI.ArcGIS.Geometry;

namespace Edit
{

    public partial class labelEditCallout : Form

    {

        public string inputText = "";

        public ITextSymbol textSymbol;

        private bool ModifFillColor = false;

        public labelEditCallout(string s,ITextSymbol texSy)

        {

            inputText = s;

            textSymbol = texSy;

            InitializeComponent();

        }
 
        private void labelEditCallout_Load(object sender, EventArgs e)

        {
 
            textBox1.Text = inputText;

             comboBox1.Items.Add("矩形框");

             comboBox1.Items.Add("圆角矩形");

             //comboBox1.Items.Add("Oval");

             comboBox1.SelectedIndex = 1;
 
        }

        public IColor ConvertColorToIColor(Color color)

        {
 
            IColor pColor = new RgbColorClass();
 
            pColor.RGB = color.B * 65536 + color.G * 256 + color.R;
 
            return pColor;
 
        }

        private void button2_Click(object sender, EventArgs e)

        {

            IBalloonCallout textBack = (((IFormattedTextSymbol)textSymbol).Background) as IBalloonCallout;

            IFillSymbol pOldFill = textBack.Symbol;

            IPoint pPoint = textBack.AnchorPoint;

            ISimpleFillSymbol pSmplFill = new SimpleFillSymbolClass();

            pSmplFill.Style = esriSimpleFillStyle.esriSFSSolid;

            if (ModifFillColor)

            {

                pSmplFill.Color = ConvertColorToIColor(this.button1.BackColor);

            }

            else

                pSmplFill.Color = pOldFill.Color;
 
            IBalloonCallout pBllnCallout = new BalloonCalloutClass();

            switch (comboBox1.Text)

            {

                case"矩形框":

                    pBllnCallout.Style = esriBalloonCalloutStyle.esriBCSRectangle;

                    break;

                case"圆角矩形":

                    pBllnCallout.Style = esriBalloonCalloutStyle.esriBCSRoundedRectangle;

                    break;

                //case"Oval":

                //    pBllnCallout.Style = esriBalloonCalloutStyle.esriBCSOval;

                //    break;

            }

            pBllnCallout.Symbol = pSmplFill;

            pBllnCallout.LeaderTolerance = 5;

            pBllnCallout.AnchorPoint = pPoint;
 
            IFormattedTextSymbol pTextSymbol = new TextSymbolClass();

            pTextSymbol.Direction = esriTextDirection.esriTDAngle;

            pTextSymbol.Angle = 15;

            pTextSymbol.Background = pBllnCallout as ITextBackground;

            textSymbol = pTextSymbol as ITextSymbol;
 
            inputText = textBox1.Text;

            this.Close();

        }
 
        //获取颜色

        private void button1_Click(object sender, EventArgs e)

        {

            if (this.colorDialog.ShowDialog() == DialogResult.OK)

            {

                this.button1.BackColor = this.colorDialog.Color;

                ModifFillColor = true;

            }
 
        }
 
        private void button3_Click(object sender, EventArgs e)

        {

            this.Close();

        }
 
    }
}

没有整理与归纳的知识，一文不值！高度概括与梳理的知识，才是自己真正的知识与技能。永远不要让自己的*、好奇、充满创造力的想法被现实的框架所束缚，让创造力*成长吧！多花时间，关心他（她）人，正如别人所关心你的。理想的腾飞与实现，没有别人的支持与帮助，是万万不能的。

本文转自wenglabs博客园博客，原文链接：http://www.cnblogs.com/arxive/p/5903508.html，如需转载请自行联系原作者

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