模仿ArcGIS用Graphics重绘的直方图分级调节器




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.Geodatabase;
using ESRI.ArcGIS.Controls;
using
ESRI.ArcGIS.Carto;

namespace 专题图自动化系统
{
    public partial class ColorMap
: Form
    {
       
double max, min;
        AxMapControl
axMapControl1;
        string
FindField;
        public ColorMap(double
_max,double _min,AxMapControl ax,string
findField)
       
{
           
InitializeComponent();
           
max =
_max;
            min
= _min;
           
axMapControl1 =
ax;
           
FindField = findField;
       
}
        IFeatureClass
pFeatureClass;
        private void
FindCity()
       
{
           
IFeatureLayer pFeatureLayer = axMapControl1.get_Layer(0) as
IFeatureLayer;
           
if (pFeatureLayer !=
null)
               
pFeatureClass =
pFeatureLayer.FeatureClass;
           
int[] index = new
int[2];//name字段+查询依据字段
           
for (int i = 0; i < index.Length;
i++)
           
{
               
if (i ==
0)
                   
index[i] =
pFeatureClass.Fields.FindField("name");
               
else
                   
index[i] =
pFeatureClass.Fields.FindField(FindField);
           
}
           
IFeatureCursor pFeatureCursor =
pFeatureClass.Search(null,false);
           
IFeature pFeature =
pFeatureCursor.NextFeature();
           
object [] value=new
object[index.Length];
           
while (pFeature !=
null)
           
{
               
for (int i = 0; i < index.Length;
i++)
               
{
                   
value[i] =
pFeature.get_Value(index[i]);
                   
if (i ==
1)
                   
{
                       
double  a =
Convert.ToDouble(value[1].ToString());
                       
switch
(searchCity.Length)
                       
{
                           
case 2: N1.Add(value[0].ToString());
break;
                           
case 3: if (a <= searchCity[1]) {
N1.Add(value[0].ToString());}
                           
else{N2.Add(value[0].ToString());}break;
                           
case 4: if (a <= searchCity[1]) { N1.Add(value[0].ToString());
}
                               
if (a > searchCity[1] && a <= searchCity[2]) {
N2.Add(value[0].ToString());
}
                               
if (a > searchCity[2]) { N3.Add(value[0].ToString());
}break;
                           
case 5: if (a <= searchCity[1]) { N1.Add(value[0].ToString());
}
                               
if (a > searchCity[1] && a <= searchCity[2]) {
N2.Add(value[0].ToString());
}
                               
if (a > searchCity[2]&&a<=searchCity[3]) {
N3.Add(value[0].ToString());
}
                               
if(a>searchCity[3]){N4.Add(value[0].ToString());}break;
                           
case 6: if (a <= searchCity[1]) { N1.Add(value[0].ToString());
}
                               
if (a > searchCity[1] && a <= searchCity[2]) {
N2.Add(value[0].ToString());
}
                               
if (a > searchCity[2] && a <= searchCity[3]) {
N3.Add(value[0].ToString());
}
                               
if (a > searchCity[3]&&a<=searchCity[4]) {
N4.Add(value[0].ToString());
}
                               
if(a>searchCity[4]){N5.Add(value[0].ToString());}break;
                       
}
                   
}
                    
               
}
               
pFeature =
pFeatureCursor.NextFeature();
           
}
       
}
        List<string> N1 = new
List<string>();
       
List<string> N2 = new
List<string>();
       
List<string> N3 = new
List<string>();
       
List<string> N4 = new
List<string>();
       
List<string> N5 = new
List<string>();
        private void
DrawCity()
       
{
            Bitmap
bt = new
Bitmap(panel3.Width,panel3.Height);
           
Graphics g =
Graphics.FromImage(bt);
           
Pen pen = new
Pen(Color.Black,1);
           
string []n1=new
string[6];
           
if (N1 !=
null)
           
{
               
foreach (string a in
N1)
               
{
                   
n1[1] += a +
",";
               
}
           
}
            if (N2
!= null)
           
{
               
foreach (string a in
N2)
               
{
                   
n1[2] += a +
",";
               
}
           
}
            if (N3
!= null)
           
{
               
foreach (string a in
N3)
               
{
                   
n1[3] += a +
",";
               
}
           
}
            if (N4
!= null)
           
{
               
foreach (string a in
N4)
               
{
                   
n1[4] += a +
",";
               
}
           
}
            if (N5
!= null)
           
{
               
foreach (string a in
N5)
               
{
                   
n1[5] += a +
",";
               
}
           
}
            for (int
i = 1; i <= n;
i++)
           
{
               
g.DrawString("第" + i + "级:" +n1[i], new Font("黑体", 10), new
SolidBrush(Color.Black), new PointF(20, 25 *
i));
           
}
           
panel3.BackgroundImage = bt;
       
}
        private void
DrawString()
       
{
            Bitmap
bt = new
Bitmap(panel2.Width,panel2.Height);
           
Graphics g =
Graphics.FromImage(bt);
           
Pen pen = new
Pen(Color.Black,1);
           
double fromValue =
min;
           
searchCity[0] =
fromValue;
           
double
toValue;
           
for (int i = 1; i <= n;
i++)
           
{
               
if (i ==
index)
                   
toValue = min + (x2 - temp[1]) * k /
flag;
               
else
                   
toValue=min + i *
k;
               
searchCity[i] =
toValue;
               
g.DrawString("第"+i+"级:"+fromValue+"万到"+toValue+"万",new Font("黑体",10),new
SolidBrush(Color.Black),new
PointF(20,25*i));
               
fromValue=toValue;
           
}
           
panel2.BackgroundImage = bt;
       
}
        double
k;
        private void
DrawZft()
       
{
            Bitmap
bt = new
Bitmap(panel1.Width,panel1.Height);
           
Graphics g =
Graphics.FromImage(bt);
           
Pen pen = new
Pen(Color.White,1);
           
g.DrawLine(pen,new Point(30,0),new
Point(30,panel1.Height-30));
           
g.DrawLine(pen,new Point(30,panel1.Height-30),new
Point(panel1.Width-4,panel1.Height-30));
           
k = (max - min) /
n;
            for
(int i = 1; i <= n+1;
i++)
           
{
               
if (i ==
index)
               
{
                   
g.DrawString((min + (x2-temp[1]) * k/flag).ToString(), new Font("宋体", 9), new
SolidBrush(Color.White), new PointF(x2 - 2,
panel1.Height-30));
                   
g.DrawLine(pen, new PointF(x2, panel1.Height-30), new PointF(x2,
0));
               
}
               
else
               
{
                   
g.DrawString((min + (i-1) * k).ToString(), new Font("宋体", 9), new
SolidBrush(Color.White), new PointF(temp[i] - 8,
panel1.Height-30));
                   
g.DrawLine(pen, new PointF(temp[i], panel1.Height-30), new PointF(temp[i],
0));
               
}
           
}
           
panel1.BackgroundImage = bt;
       
}
        int
n=0;
        float[]
temp;
        int
flag;
        double
[]searchCity;
        private void
comboBox1_SelectedIndexChanged(object sender, EventArgs
e)
       
{
            n =
int.Parse(comboBox1.SelectedItem.ToString());
           
temp = new float[n +
2];
           
searchCity=new
double[n+1];
           
flag = (panel1.Width - 4) / (n +
1);
            for
(int i = 1; i <= n+1;
i++)
           
{
               
temp[i] = flag *
i;
           
}
            if (N1
!=
null)
               
N1.Clear();
           
if (N2 !=
null)
               
N2.Clear();
           
if (N3 !=
null)
               
N3.Clear();
           
if (N4 !=
null)
               
N4.Clear();
           
if (N5 !=
null)
               
N5.Clear();
           
DrawZft();
           
DrawString();
           
FindCity();
           
DrawCity();
       
}
        int
index=0;
        int x1, x2,
x3;
        private void
panel1_MouseDown(object sender, MouseEventArgs
e)
       
{
            x1 =
e.X;
            for
(int i = 1; i < temp.Length;
i++)
           
{
               
if (Math.Abs(x1 - temp[i]) <
3)
               
{
                   
index =
i;
               
}
           
}
        }

private void
panel1_MouseMove(object sender, MouseEventArgs
e)
       
{
           
x2=e.X;
            if
(index !=
0)
           
{
               
if (N1 !=
null)
                   
N1.Clear();
               
if (N2 !=
null)
                   
N2.Clear();
               
if (N3 !=
null)
                   
N3.Clear();
               
if (N4 !=
null)
                   
N4.Clear();
               
if (N5 !=
null)
                   
N5.Clear();
               
DrawZft();
               
DrawString();
               
FindCity();
               
DrawCity();
           
}
        }

private void
panel1_MouseUp(object sender, MouseEventArgs
e)
       
{
            x3 =
e.X;
           
temp[index] =
x3;
           
DrawZft();
           
index = 0;
        }
   
}
}

模仿ArcGIS用Graphics重绘的直方图分级调节器,布布扣,bubuko.com

时间： 2024-08-03 20:36:08

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