//写文件函数主框架
public static void WriteFile(GISLayer layer, string filename)
{
FileStream fsr = new FileStream(filename, FileMode.Create); //根据文件名创建文件流
BinaryWriter bw = new BinaryWriter(fsr);
WriteFileHeader(layer, bw); //写入头文件
GISTools.WriteString(layer.Name, bw); //写入图层名字
WriteFields(layer.Fields, bw); //写入字段
WriteFeatures(layer, bw);
bw.Close();
fsr.Close();
}
private void Clicked(object sender, EventArgs e)
{
if (listBox1.SelectedItem == null)
{
return;
}
GISLayer layer = Document.getLayer(listBox1.SelectedItem.ToString());
layer.Selectable = checkBox1.Checked;
layer.Visible = checkBox2.Checked;
layer.DrawAttributeOrNot = checkBox3.Checked;
layer.LabelIndex = comboBox1.SelectedIndex;
}
static void WriteFileHeader(GISLayer layer, BinaryWriter bw)//bw是与文件相连的文件写入工具
{
MyFileHeader mfh = new MyFileHeader();
mfh.MinX = layer.Extent.getMinX();
mfh.MinY = layer.Extent.getMinY();
mfh.MaxX = layer.Extent.getMaxX();
mfh.MaxY = layer.Extent.getMaxY();
mfh.FeatureCount = layer.FeatureCount();
mfh.Shapetype = (int)(layer.ShapeType);
mfh.FieldCount = layer.Fields.Count;
bw.Write(GISTools.ToBytes(mfh));
}
private void BtchangeEsymbol_Click(object sender, EventArgs e)
{
int symbolsize = Convert.ToInt32(tbsymbolsize.Text);
int cls = Convert.ToInt32(tbclass.Text);
Color symbolcolor = btsymbolfillcolor.BackColor;
List <int> sizes = layer.getSymbolSize(cbattributeEsymbol.SelectedIndex, symbolsize, cls);
//新建一个esymbollayer，在点密度中的点将以一个点图层的形式显示出来
GISLayer esymbollayer = new GISLayer("Esymbol", SHAPETYPE.point, layer.Extent);
esymbollayer.Selectable = false; //设置为不可选择
esymbollayer.ThematicType = THEMATICTYPE.EqualSymbol; //设置为等比变换型专题地图
//为esymbollayer中每一个对象设置一个thematic
for (int i = 0; i < layer.Features.Count; i++)
{
esymbollayer.Thematics.Add(i, new GISThematic(Color.Black, sizes[i], symbolcolor));
Console.WriteLine(sizes[i]);
}
//创建symbols点对象，作为esymbollayer的features
//默认将符号放于polygon的重心位置
List <GISFeature> symbols = new List <GISFeature>();
for (int i = 0; i < layer.Features.Count; i++)
{
GISPolygon polygon = (GISPolygon)layer.Features[i].spatialpart;
GISVertex vertex = new GISVertex(polygon.centroid);
symbols.Add(new GISFeature(new GISPoint(vertex), null));
}
esymbollayer.Features = symbols;
//先移除之前已有的点密度图层
for (int i = Document.layers.Count - 1; i > 0; i--)
{
if (Document.layers[i].Name == "Esymbol")
{
Document.layers.RemoveAt(i);
}
}
Document.layers.Add(esymbollayer);//将esymbollayer添加到document中 在更新地图绘制时会自动绘制layers里面的所有图层
//更新地图绘制
if (sender.Equals(previewes))
{
PreviewWindow.UpdateMap();
}
else if (sender.Equals(btchangeEsymbol))
{
Mapwindow.UpdateMap();
}
}
public static GISLayer ReadShapefile(string shpfilename)
{
FileStream fsr = new FileStream(shpfilename, FileMode.Open); //打开shp文件
BinaryReader br = new BinaryReader(fsr); //获取文件流后用二进制读取工具
ShapefileHeader sfh = ReadFileHeader(br); //调用之前的函数 获取头文件
SHAPETYPE ShapeType = (SHAPETYPE)Enum.Parse( //类型整数变对应的枚举值
typeof(SHAPETYPE), sfh.ShapeType.ToString());
GISExtent extent = new GISExtent(sfh.Xmax, sfh.Xmin, sfh.Ymax, sfh.Ymin);
string dbffilename = shpfilename.Replace(".shp", ".dbf"); //更改后缀
DataTable table = ReadDBF(dbffilename);
GISLayer layer = new GISLayer(shpfilename, ShapeType, extent, ReadFields(table)); //gislayer的构造参数分别是名字 图层类型 范围 *GISField的泛型
int rowindex = 0; //当前读取的记录位置
while (br.PeekChar() != -1)
{
RecordHeader rh = ReadRecordHeader(br);
int RecordLength = FromBigToLittle(rh.RecordLength) * 2 - 4;
byte[] RecordContent = br.ReadBytes(RecordLength);//将记录内容读入字节数组
if (ShapeType == SHAPETYPE.point)
{
GISPoint onepoint = ReadPoint(RecordContent);
GISFeature onefeature = new GISFeature(onepoint, ReadAttribute(table, rowindex));
layer.AddFeature(onefeature);
}
if (ShapeType == SHAPETYPE.line)
{
List <GISLine> lines = ReadLines(RecordContent);
for (int i = 0; i < lines.Count; i++)
{
GISFeature onefeature = new GISFeature(lines[i], ReadAttribute(table, rowindex));
layer.AddFeature(onefeature);
}
}
if (ShapeType == SHAPETYPE.polygon)
{
List <GISPolygon> polygons = ReadPolygons(RecordContent);
for (int i = 0; i < polygons.Count; i++)
{
GISFeature onefeature = new GISFeature(polygons[i], ReadAttribute(table, rowindex));
layer.AddFeature(onefeature);
}
}
rowindex++;
}
br.Close();
fsr.Close(); //归还文件权限于操作系统
return(layer); //最后返回一个图层文件
}
public static GISLayer ReadFile(string filename)
{
FileStream fsr = new FileStream(filename, FileMode.Open);
BinaryReader br = new BinaryReader(fsr);
MyFileHeader mfh = (MyFileHeader)(GISTools.FromBytes(br, typeof(MyFileHeader))); //读取文件头
SHAPETYPE ShapeType = (SHAPETYPE)Enum.Parse(typeof(SHAPETYPE), mfh.Shapetype.ToString()); //获取空间实体类型shapetype和
GISExtent Extent = new GISExtent(mfh.MinX, mfh.MaxX, mfh.MinY, mfh.MaxY); //地图范围extent
string layername = GISTools.ReadString(br); //读取图层名
List <GISField> Fields = ReadFields(br, mfh.FieldCount); //读取字段信息
GISLayer layer = new GISLayer(layername, ShapeType, Extent, Fields);
ReadFeatures(layer, br, mfh.FeatureCount);
br.Close();
fsr.Close();
return(layer);
}
private void Clicked(object sender, EventArgs e)
{
if (listBox1.SelectedItem == null)
{
return;
}
GISLayer layer = Document.getLayer(listBox1.SelectedItem.ToString());
layer.Selectable = checkBox1.Checked;
layer.Visible = checkBox2.Checked;
layer.DrawAttributeOrNot = checkBox3.Checked;
layer.LabelIndex = comboBox1.SelectedIndex;
layer.Thematic.InsideColor = btfillcolor.BackColor;
layer.Thematic.OutsideColor = btboundcolor.BackColor;
layer.Thematic.Size = ((tbdrawsize.Text == "") ? layer.Thematic.Size : Int32.Parse(tbdrawsize.Text));
}
internal void OpenAdvancedThematic(GISDocument document, GISLayer layer)
{
AdvancedThematic ATWindow = null;
//如果高级专题制图窗口没有初始化 则初始化
if (ATWindow == null)
{
ATWindow = new AdvancedThematic(document, this, layer);
}
//如果高级专题制图被释放了 则初始化
if (ATWindow.IsDisposed)
{
ATWindow = new AdvancedThematic(document, this, layer);
}
ATWindow.Show();
ATWindow.BringToFront();
}
private void Btaddlayer_Click(object sender, EventArgs e)
{
OpenFileDialog openFileDialog = new OpenFileDialog();
openFileDialog.Filter = "GIS File (*." + GISConst.SHPFILE + ",*." + GISConst.MYFILE + ")|*."
+ GISConst.SHPFILE + ";*." + GISConst.MYFILE;
openFileDialog.RestoreDirectory = false;
openFileDialog.FilterIndex = 1;
openFileDialog.Multiselect = false;
if (openFileDialog.ShowDialog() != DialogResult.OK)
{
return;
}
GISLayer layer = Document.Addlayer(openFileDialog.FileName);
listBox1.Items.Insert(0, layer.Name);
listBox1.SelectedIndex = 0;
}
private void btchangedotdensity_Click(object sender, EventArgs e)
{
int dotdensity = Convert.ToInt32(tbdotdensity.Text);
int dotsize = Convert.ToInt32(tbdotsize.Text);
Color dotcolor = btdotfillcolor.BackColor;
//获取归一化后的属性数据 作为每一个控件对象内点数量的权重
List <int> normalizations = layer.getNormalized(cbattributedot.SelectedIndex, dotdensity);
if (normalizations == null)
{
MessageBox.Show("基于该属性无法绘制点密度地图!!");
return;
}
//新建一个dotlayer，在点密度中的点将以一个点图层的形式显示出来
GISLayer dotlayer = new GISLayer("dotdensity", SHAPETYPE.point, layer.Extent);
dotlayer.Selectable = false; //设置为不可选择
dotlayer.ThematicType = THEMATICTYPE.DotDensity; //设置为点密度型专题地图
dotlayer.defaultThmatic = new GISThematic(dotcolor, dotsize, dotcolor);
List <GISFeature> dotpoints = GISTools.MakeRandomDensityDot(layer,
cbattributedot.SelectedIndex, normalizations);
dotlayer.Features = dotpoints;
//先移除之前已有的点密度图层
for (int i = Document.layers.Count - 1; i > 0; i--)
{
if (Document.layers[i].Name == "dotdensity")
{
Document.layers.RemoveAt(i);
}
}
Document.layers.Add(dotlayer);//将dotlayer添加到document中 在更新地图绘制时会自动绘制layers里面的所有图层
//更新地图绘制
if (sender.Equals(previewds))
{
PreviewWindow.UpdateMap();
}
else if (sender.Equals(btchangedotdensity))
{
Mapwindow.UpdateMap();
}
}
bool FromMapWindow = true;//记录选择数据集的来源
public AttributeForm(GISLayer _layer, GISPanel mapwindow)
{
InitializeComponent();
Layer = _layer;
MapWindow = mapwindow;
//for (int i = 0; i < layer.Fields.Count; i++) //添加一系列的列
//{
// dataGridView1.Columns.Add(layer.Fields[i].name, layer.Fields[i].name);
//}
//for (int i = 0; i < layer.FeatureCount(); i++)
//{
// dataGridView1.Rows.Add();
// for (int j = 0; j < layer.Fields.Count; j++)
// {
// dataGridView1.Rows[i].Cells[j].Value = layer.GetFeature(i).getAttribute(j);
// }
//}
}
private void Btexportlayer_Click(object sender, EventArgs e)
{
if (listBox1.SelectedItem == null)
{
return;
}
SaveFileDialog savefiledialog1 = new SaveFileDialog();
savefiledialog1.Filter = "GIS file (*." + GISConst.MYFILE + ")|*." + GISConst.MYFILE;
savefiledialog1.FilterIndex = 1;
savefiledialog1.RestoreDirectory = false;
if (savefiledialog1.ShowDialog() == DialogResult.OK)
{
GISLayer layer = Document.getLayer(listBox1.SelectedItem.ToString());
GISMyFile.WriteFile(layer, savefiledialog1.FileName);
MessageBox.Show("Done! " + savefiledialog1.FileName + " saved!");
}
}
private void ListBox1_SelectedIndexChanged(object sender, EventArgs e)
{
//用以应对listbox选择改变的情况 更改相应的项
if (listBox1.SelectedItem == null)
{
return;
}
GISLayer layer = Document.getLayer(listBox1.SelectedItem.ToString());//根据选中情况获取对应的layer
checkBox1.Checked = layer.Selectable;
checkBox2.Checked = layer.Visible;
checkBox3.Checked = layer.DrawAttributeOrNot;
comboBox1.Items.Clear();
for (int i = 0; i < layer.Fields.Count; i++)
{
comboBox1.Items.Add(layer.Fields[i].name);
comboBox3.Items.Add(layer.Fields[i].name);
}
comboBox1.SelectedIndex = (layer.Fields.Count > 0) ? layer.LabelIndex : -1;
comboBox3.SelectedIndex = (layer.Fields.Count > 0) ? layer.ThematicFieldIndex : -1;
fileaddr.Text = layer.Path;
textBox1.Text = layer.Name;
if (layer.ThematicType == THEMATICTYPE.UnifiedValue)
{
comboBox2.SelectedIndex = 0;
GISThematic Thematic = layer.Thematics[layer.ThematicType];
btfillcolor.BackColor = Thematic.InsideColor;
tbdrawsize.Text = Thematic.Size.ToString();
btboundcolor.BackColor = Thematic.OutsideColor;
}
else if (layer.ThematicType == THEMATICTYPE.UniqueValue)
{
comboBox2.SelectedIndex = 1;
}
else if (layer.ThematicType == THEMATICTYPE.GradualColor)
{
comboBox2.SelectedIndex = 2;
tblevelnumber.Text = layer.Thematics.Count.ToString();
}
}
//读取所有的gisfeature的空间信息和属性值
static void ReadFeatures(GISLayer layer, BinaryReader br, int FeatureCount)
{
for (int featureindex = 0; featureindex < FeatureCount; featureindex++)
{
GISFeature feature = new GISFeature(null, null);
if (layer.ShapeType == SHAPETYPE.point)
{
feature.spatialpart = new GISPoint(new GISVertex(br));
}
else if (layer.ShapeType == SHAPETYPE.line)
{
feature.spatialpart = new GISLine(ReadMultipleVertexes(br));
}
else if (layer.ShapeType == SHAPETYPE.polygon)
{
feature.spatialpart = new GISPolygon(ReadMultipleVertexes(br));
}
feature.attributepart = ReadAttributes(layer.Fields, br);
layer.AddFeature(feature);
}
}
private void ListBox1_SelectedIndexChanged(object sender, EventArgs e)
{
//用以应对listbox选择改变的情况 更改相应的项
if (listBox1.SelectedItem == null)
{
return;
}
GISLayer layer = Document.getLayer(listBox1.SelectedItem.ToString());//根据选中情况获取对应的layer
checkBox1.Checked = layer.Selectable;
checkBox2.Checked = layer.Visible;
checkBox3.Checked = layer.DrawAttributeOrNot;
comboBox1.Items.Clear();
for (int i = 0; i < layer.Fields.Count; i++)
{
comboBox1.Items.Add(layer.Fields[i].name);
}
comboBox1.SelectedIndex = layer.LabelIndex;
fileaddr.Text = layer.Path;
textBox1.Text = layer.Name;
}
//输出图层所有GISFeatrue
static void WriteFeatures(GISLayer layer, BinaryWriter bw)
{
for (int featureindex = 0; featureindex < layer.FeatureCount(); featureindex++)
{
GISFeature feature = layer.GetFeature(featureindex);
if (layer.ShapeType == SHAPETYPE.point)
{
((GISPoint)feature.spatialpart).centroid.WriteVertex(bw);
}
else if (layer.ShapeType == SHAPETYPE.line)
{
GISLine line = (GISLine)(feature.spatialpart);
WriteMultipleVertexes(line.Vertexes, bw);
}
else if (layer.ShapeType == SHAPETYPE.polygon)
{
GISPolygon polygon = (GISPolygon)(feature.spatialpart);
WriteMultipleVertexes(polygon.Vertexes, bw);
}
WriteAttributes(feature.attributepart, bw);
}
}
private void Bteditname_Click(object sender, EventArgs e)
{
//修改图层名
if (listBox1.SelectedItem == null)
{
return;
}
//确保新输入的图层名不会与选中之外的其他图层名相同
for (int i = 0; i < listBox1.Items.Count; i++)
{
if (i != listBox1.SelectedIndex)
{
if (listBox1.Items[i].ToString() == textBox1.Text)
{
MessageBox.Show("不能与已有图层名重复!!");
return;
}
}
}
GISLayer layer = Document.getLayer(listBox1.SelectedItem.ToString());
layer.Name = textBox1.Text;
listBox1.SelectedItem = textBox1.Text;
}
private void Btchangethematic_Click(object sender, EventArgs e)
{
if (listBox1.SelectedItem == null)
{
return;
}
GISLayer layer = Document.getLayer(listBox1.SelectedItem.ToString());
//唯一值地图
if (comboBox2.SelectedIndex == 0)
{
layer.MakeUnifiedValueMap();
GISThematic Thematic = layer.Thematics[layer.ThematicType];
Thematic.InsideColor = btfillcolor.BackColor;
Thematic.OutsideColor = btboundcolor.BackColor;
Thematic.Size = (tbdrawsize.Text == "") ? Thematic.Size : Int32.Parse(tbdrawsize.Text);
}
//独立值地图
else if (comboBox2.SelectedIndex == 1)
{
layer.MakeUniqueValueMap(comboBox3.SelectedIndex);
}
//分层设色地图
else if (comboBox2.SelectedIndex == 2)
{
//此处对makegradualcolor的更改
if (layer.MakeGradualColor(comboBox3.SelectedIndex, Int32.Parse(tblevelnumber.Text),
Color.Black, Color.White, Color.Black) == false)
{
MessageBox.Show("基于该属性无法绘制分层设色地图!!");
return;
}
}
//更新地图绘制
Mapwindow.UpdateMap();
}