// ArcGIS Snippet Title:
// Create JPEG from ActiveView
//
// Long Description:
// Creates a .jpg (JPEG) file from IActiveView. Default values of 96 DPI are used for the image creation.
//
// Add the following references to the project:
// ESRI.ArcGIS.Carto
// ESRI.ArcGIS.Display
// ESRI.ArcGIS.Geometry
// ESRI.ArcGIS.Output
// ESRI.ArcGIS.System
//
// Intended ArcGIS Products for this snippet:
// ArcGIS Desktop (ArcEditor, ArcInfo, ArcView)
// ArcGIS Engine
// ArcGIS Server
//
// Applicable ArcGIS Product Versions:
// 9.2
// 9.3
// 9.3.1
// 10.0
//
// Required ArcGIS Extensions:
// (NONE)
//
// Notes:
// This snippet is intended to be inserted at the base level of a Class.
// It is not intended to be nested within an existing Method.
//
///<summary>Creates a .jpg (JPEG) file from IActiveView. Default values of 96 DPI are used for the image creation.</summary>
///
///<param name="activeView">An IActiveView interface</param>
///<param name="pathFileName">A System.String that the path and filename of the JPEG you want to create. Example: "C:\temp\test.jpg"</param>
///
///<returns>A System.Boolean indicating the success</returns>
///
///<remarks></remarks>
private bool CreateJPEGFromActiveView(ESRI.ArcGIS.Carto.IActiveView activeView, System.String pathFileName)
{
//parameter check
if (activeView == null || !(pathFileName.EndsWith(".jpg")))
{
return(false);
}
ESRI.ArcGIS.Output.IExport export = new ESRI.ArcGIS.Output.ExportJPEGClass();
export.ExportFileName = pathFileName;
// Microsoft Windows default DPI resolution
export.Resolution = 300;
ESRI.ArcGIS.esriSystem.tagRECT exportRECT = activeView.ExportFrame;
ESRI.ArcGIS.Geometry.IEnvelope envelope = new ESRI.ArcGIS.Geometry.EnvelopeClass();
envelope.PutCoords(exportRECT.left, exportRECT.top, exportRECT.right, exportRECT.bottom);
export.PixelBounds = envelope;
System.Int32 hDC = export.StartExporting();
activeView.Output(hDC, (System.Int16)export.Resolution, ref exportRECT, null, null);
// Finish writing the export file and cleanup any intermediate files
export.FinishExporting();
export.Cleanup();
MessageBox.Show("已将地图导出为jpg格式图片");
return(true);
}
public static string CreateJPEGFromActiveView(IRaster pRaster,IEnvelope pEnv,string outurl, System.String pathFileName)
{
//创建rasterlayer
IRasterLayer pRasterLayer = new RasterLayerClass();
//获取mapServer中所有的图层
IMap pMap = new MapClass();
pRasterLayer.CreateFromRaster(pRaster);
pMap.AddLayer(pRasterLayer as ILayer);
IActiveView activeView = pMap as IActiveView;
activeView.Extent = pEnv;
//parameter check
if (activeView == null)
{
return null;
}
string imageName = System.DateTime.Now.ToString().Replace("/", "").Replace(":", "").Replace(" ", "") + ".png";
pathFileName = System.IO.Path.Combine(pathFileName, imageName);
ESRI.ArcGIS.Output.IExport export = new ESRI.ArcGIS.Output.ExportPNGClass();
export.ExportFileName = pathFileName;
// Microsoft Windows default DPI resolution
ESRI.ArcGIS.esriSystem.tagRECT exportRECT = new ESRI.ArcGIS.esriSystem.tagRECT();
exportRECT.top = 0;
exportRECT.left = 0;
exportRECT.right = 800;
exportRECT.bottom = 600;
ESRI.ArcGIS.Geometry.IEnvelope envelope = new ESRI.ArcGIS.Geometry.EnvelopeClass();
envelope.PutCoords(exportRECT.top,exportRECT.left,exportRECT.right,exportRECT.bottom);
export.PixelBounds = envelope;
System.Int32 hDC = export.StartExporting();
activeView.Output(hDC, (System.Int16)export.Resolution, ref exportRECT, null, null);
// Finish writing the export file and cleanup any intermediate files
export.FinishExporting();
export.Cleanup();
return outurl + "/" + imageName;
}
//使用IActiveView.Output方法输出
//Width和Hight用于设置输出的图片尺寸，默认为0则使用ActiveView.ExportFrame
//VisibleBounds用于设置待输出的地图范围，默认为null则使用ActiveView.Extent
private void ActiveViewOutput(IActiveView docActiveView, int iOutputResolution, int Width, int Height, IEnvelope VisibleBounds, string sExportFileName, IExport docExport)
{
docExport.ExportFileName = sExportFileName;
if (iOutputResolution <= 0) iOutputResolution = 96;
if (Width <= 0 || Height <= 0)
{
Width = docActiveView.ExportFrame.right;
Height = docActiveView.ExportFrame.bottom;
if (Width == 0)
Width = 1024;
if (Height == 0)
Height = 768;
Width = (Width * iOutputResolution) / 96;
Height = (Height * iOutputResolution) / 96;
}
docExport.Resolution = iOutputResolution;
ESRI.ArcGIS.esriSystem.tagRECT exportRECT = new ESRI.ArcGIS.esriSystem.tagRECT();
exportRECT.left = 0;
exportRECT.top = 0;
exportRECT.right = Width;
exportRECT.bottom = Height;
IEnvelope envelope = new EnvelopeClass();
envelope.PutCoords(exportRECT.left, exportRECT.top, exportRECT.right, exportRECT.bottom);
docExport.PixelBounds = envelope;
System.Int32 hDC = docExport.StartExporting();
docActiveView.Output(hDC, iOutputResolution, ref exportRECT, VisibleBounds, null);
docExport.FinishExporting();
docExport.Cleanup();
}
//Function: Export map
//Date: 2019/4/3
public void ExportMap(int pOutputResolution, string pExportFileName, bool pWriteWorldFile, double pWidth, double pHeight)
{
IActiveView docActiveView;
IExport docExport;
IPrintAndExport docPrintExport;
IWorldFileSettings pWorldFile = null;
ESRI.ArcGIS.esriSystem.tagRECT userRECT = new ESRI.ArcGIS.esriSystem.tagRECT();
IEnvelope pEnv = new EnvelopeClass();
string pFileType;
int pFileNameLength = pExportFileName.Length;
if (pFileNameLength > 3)
{
pFileType = pExportFileName.Substring(pFileNameLength - 3, 3);
}
else
{
pFileType = pExportFileName;
}
switch (pFileType)
{
case "jpg":
docExport = new ExportJPEGClass();
break;
case "png":
docExport = new ExportPNGClass();
break;
case "tif":
docExport = new ExportTIFFClass();
break;
default:
docExport = new ExportJPEGClass();
break;
}
if (miLayoutView.Checked)
{
docActiveView = axPageLayoutControl1.ActiveView;
}
else
{
docActiveView = axMapControl1.ActiveView;
}
pEnv = docActiveView.Extent;
pWorldFile = (IWorldFileSettings)docExport;
pWorldFile.MapExtent = pEnv;
pWorldFile.OutputWorldFile = pWriteWorldFile;
userRECT.left = 0;
userRECT.top = 0;
userRECT.right = Convert.ToInt32(pWidth);
userRECT.bottom = Convert.ToInt32(pHeight);
IEnvelope pDriverBounds = new EnvelopeClass();
pDriverBounds.PutCoords(userRECT.top, userRECT.bottom, userRECT.right, userRECT.top);
docExport.PixelBounds = pDriverBounds;
docPrintExport = new PrintAndExportClass();
docExport.ExportFileName = pExportFileName;
docPrintExport.Export(docActiveView, docExport, pOutputResolution, true, null);
}
private void button2_Click(object sender, EventArgs e)
{
if (System.IO.File.Exists(textBoxFileName.Text.ToString()) == true)
{
MessageBox.Show("该文件已经存在，请重新命名！");
textBoxFileName.SelectAll();
}
else
{
IExport pExport = null;
IWorldFileSettings pWorldFile = null;
IExportImage pExportType;
IEnvelope pDriverBounds = null;
ESRI.ArcGIS.esriSystem.tagRECT userRECT = new ESRI.ArcGIS.esriSystem.tagRECT();
IEnvelope pEnv = new EnvelopeClass();
string FilePath = this.m_strFileName;
string[] strFileName = FilePath.Split('.');
string strFileType = strFileName[1];
switch (strFileType)
{
case "jpg":
pExport = new ExportJPEGClass();
break;
case "bmp":
pExport = new ExportBMPClass();
break;
case "gif":
pExport = new ExportGIFClass();
break;
case "tif":
pExport = new ExportTIFFClass();
break;
case "png":
pExport = new ExportPNGClass();
break;
case "emf":
pExport = new ExportEMFClass();
break;
case "pdf":
pExport = new ExportPDFClass();
break;
case ".ai":
pExport = new ExportAIClass();
break;
case "svg":
pExport = new ExportSVGClass();
break;
default:
pExport = new ExportJPEGClass();
break;
}
pExport.ExportFileName = this.m_strFileName;
pExport.Resolution = Convert.ToInt32(numUDresolution.Value);
pExportType = pExport as IExportImage;
pExportType.ImageType = esriExportImageType.esriExportImageTypeTrueColor;
pEnv = m_pageLayoutControl.ActiveView.Extent;
pWorldFile = (IWorldFileSettings)pExport;
pWorldFile.MapExtent = pEnv;
pWorldFile.OutputWorldFile = false;
userRECT.top = 0;
userRECT.left = 0;
userRECT.right = Convert.ToInt32(txtBoxWidth.Text);
userRECT.bottom = Convert.ToInt32(txtBoxHeight.Text);
pDriverBounds = new EnvelopeClass();
pDriverBounds.PutCoords(userRECT.top, userRECT.bottom, userRECT.right, userRECT.top);
pExport.PixelBounds = pDriverBounds;
ITrackCancel pTrackCancel = new TrackCancelClass();
m_pageLayoutControl.ActiveView.Output(pExport.StartExporting(), Convert.ToInt32(numUDresolution.Value), ref userRECT, m_pageLayoutControl.ActiveView.Extent, pTrackCancel);
pExport.FinishExporting();
MessageBox.Show("打印图片保存成功!", "保存", MessageBoxButtons.OK);
this.Close();
}
}
