/// <summary>
/// 打印输出.该功能目前测试只适用于JPEG,BMP.格式
/// </summary>
/// <param name="pExport"></param>
/// <param name="dResolution">分辨率</param>
/// <param name="outputPath">输出路径</param>
/// <param name="pVisibleBounds">自定义可见区域</param>
private void FunExportImage(IExport pExport, double dResolution, string outputPath,IEnvelope pVisibleBounds)
{
IEnvelope pPixelBounds;
ESRI.ArcGIS.Display.tagRECT outtagRECT;
ESRI.ArcGIS.Display.tagRECT DisplayBounds = m_ActiveView.ExportFrame;
double iScreenResolution;
if (pExport == null)
{
MessageBox.Show("打印类型未指定");
return;
}
if(pVisibleBounds!=null) //自定义框范围
{
IDisplayTransformation pDisplayTransformation = m_ActiveView.ScreenDisplay.DisplayTransformation;
pDisplayTransformation.TransformRect(pVisibleBounds, ref DisplayBounds, 8);//8代表esriDisplayTransformEnum.esriTransformToDevice
}
if (pExport is IExportImage)
{
IExportImage pExportImage = pExport as IExportImage;
pExportImage.ImageType = esriExportImageType.esriExportImageTypeTrueColor;
}
iScreenResolution = m_ActiveView.ScreenDisplay.DisplayTransformation.Resolution;
double l_resolution = Convert.ToDouble(domainResolution.Value);
//=====================================================================
//
//方法一
//
//一厘米包含37.79524个像素
//double dPixel = 37.79524;
////按照设置输入分辨率计算一厘米所含的像素数
//double tempratio = l_resolution * dPixel / iScreenResolution;
////输出图形的高度
//double tempbottom = (DisplayBounds.bottom - DisplayBounds.top) * tempratio;
////输出图形的宽度
//double tempright = (DisplayBounds.right - DisplayBounds.left) * tempratio + 0.1 * tempratio;
//======================================================================
//
//方法二:暂时可行.
//
double tempratio = l_resolution / iScreenResolution;
double tempbottom = (DisplayBounds.bottom - DisplayBounds.top) * tempratio;
double tempright = (DisplayBounds.right - DisplayBounds.left) * tempratio;
//=====================================================================
outtagRECT.left = 0;
outtagRECT.top = 0;
outtagRECT.bottom = Convert.ToInt32(Math.Truncate(tempbottom));
outtagRECT.right = Convert.ToInt32(Math.Truncate(tempright));
pPixelBounds = new EnvelopeClass();
pPixelBounds.PutCoords(outtagRECT.left, outtagRECT.top, outtagRECT.right, outtagRECT.bottom);
pExport.Resolution = dResolution;
pExport.PixelBounds = pPixelBounds;
pExport.ExportFileName = outputPath;
try
{
ITrackCancel pTrackCancel = new TrackCancelClass();
int hDC;
hDC = pExport.StartExporting();
if (m_frmProBar == null) //m_frmProBar为进度条窗体
FunProgressBar();
m_frmProBar.Show();
m_ActiveView.Output(hDC, (int)dResolution, ref outtagRECT, pVisibleBounds, pTrackCancel);
pExport.FinishExporting();
m_frmProBar.Hide();
if (DialogResult.Yes == MessageBox.Show("出图成功! \n图片保存在" + txtOutPutPath.Text+"\n是否需要打开文件所在的目录？", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Information))
{
System.Diagnostics.Process.Start("explorer.exe", txtOutPutPath.Text);
}
pExport.Cleanup();
}
catch
{
MessageBox.Show("出图失败!","警告",MessageBoxButtons.OK,MessageBoxIcon.Warning);
//释放变量
m_frmProBar = null;
pExport = null;
pVisibleBounds = null;
}
//释放变量
pExport = null;
pVisibleBounds = null;
}
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