/// <summary>
/// 反序列化点图像
/// 从mwsr中获得点信息并翻译，应用到图层上。
/// </summary>
public void DeserializePointImageScheme(int newHandle, XmlElement root)
{
Program.frmMain.MapMain.LockWindow(MapWinGIS.tkLockMode.lmLock);
try
{
MapWinGIS.Utility.ImageUtils imgUtil = new MapWinGIS.Utility.ImageUtils();
bool found = false;
Interfaces.ShapefilePointImageScheme csh = new Interfaces.ShapefilePointImageScheme(newHandle);
Hashtable TranslationTable = new Hashtable();
foreach (XmlElement xe1 in root)
{
if (xe1.Name == "PointImageScheme")
{
found = true;
csh.FieldIndex = long.Parse(xe1.Attributes["FieldIndex"].InnerText);
foreach (XmlElement xe2 in xe1.ChildNodes)
{
if (xe2.Name == "ImageData")
{
foreach (XmlElement xe3 in xe2.ChildNodes)
{
long origIndex = long.Parse(xe3.Attributes["ID"].InnerText);
string imgtype;
imgtype = xe3["Image"].Attributes["Type"].InnerText;
System.Drawing.Image img = (System.Drawing.Image)(ConvertStringToImage(xe3["Image"].InnerText, imgtype));
MapWinGIS.Image ico = new MapWinGIS.Image();
ico.Picture = (stdole.IPictureDisp)imgUtil.ImageToIPictureDisp(img);
if (ico != null)
{
ico.TransparencyColor = (uint)ico.Value[0, 0];
}
int newidx = System.Convert.ToInt32(Program.frmMain.MapMain.set_UDPointImageListAdd(newHandle, ico));
TranslationTable.Add(origIndex, newidx);
img = null;
}
}
else if (xe2.Name == "ItemData")
{
foreach (XmlElement xe3 in xe2.ChildNodes)
{
if (xe3.Name == "Item")
{
string tag = xe3.Attributes["MatchValue"].InnerText;
long imgIndex = long.Parse(xe3.Attributes["ImgIndex"].InnerText);
long actualIndex = -1;
if (TranslationTable.Contains(imgIndex))
{
actualIndex = System.Convert.ToInt64(TranslationTable[imgIndex]);
}
else
{
actualIndex = imgIndex;
}
if (actualIndex != -1 && tag != "")
{
csh.Items.Add(tag, actualIndex);
}
MapWinGIS.Shapefile sf;
sf = (MapWinGIS.Shapefile)(Program.frmMain.m_Layers[newHandle].GetObject());
if (sf == null)
{
Program.g_error = "获取Shapefile 对象失败。";
return;
}
if (actualIndex != -1)
{
for (int j = 0; j < sf.NumShapes; j++)
{
if (sf.CellValue[(int)csh.FieldIndex, j].ToString() == tag)
{
Program.frmMain.MapMain.set_ShapePointImageListID(newHandle, j, (int)actualIndex);
if (Program.frmMain.MapMain.get_ShapePointType(newHandle, j) != MapWinGIS.tkPointType.ptImageList)
{
Program.frmMain.MapMain.set_ShapePointType(newHandle, j, MapWinGIS.tkPointType.ptImageList);
}
Program.frmMain.MapMain.set_ShapePointSize(newHandle, j, 1);
}
}
}
sf = null;
}
}
}
else if (xe2.Name == "ItemVisibility")
{
foreach (XmlElement xe3 in xe2.ChildNodes)
{
if (xe3.Name == "Item")
{
string tag = xe3.Attributes["MatchValue"].InnerText;
bool vis = bool.Parse(xe3.Attributes["Visible"].InnerText);
csh.ItemVisibility.Add(tag, vis);
MapWinGIS.Shapefile sf;
sf = (MapWinGIS.Shapefile)(Program.frmMain.m_Layers[newHandle].GetObject());
if (sf == null)
{
Program.g_error = "获取Shapefile 对象失败.";
return;
}
for (int j = 0; j < sf.NumShapes; j++)
{
if (sf.CellValue[(int)csh.FieldIndex, j].ToString() == tag)
{
Program.frmMain.MapMain.set_ShapeVisible(newHandle, j, vis);
}
}
sf = null;
}
}
}
}
break;
}
}
if (found)
{
Program.frmMain.Legend.Layers.ItemByHandle(newHandle).PointImageScheme = csh;
}
TranslationTable.Clear();
GC.Collect();
}
catch (Exception ex)
{
MapWinGIS.Utility.Logger.Dbg("DEBUG: " + ex.ToString());
}
finally
{
Program.frmMain.MapMain.LockWindow(MapWinGIS.tkLockMode.lmUnlock);
}
}
/// <summary>
/// 更新PreviewMap的地图显示
/// </summary>
/// <param name="fullExtents">指示是否使用全图显示地图</param>
public void GetPictureFromMap(bool fullExtents)
{
try
{
MapWinGIS.Extents exts;
MapWinGIS.Image img = new MapWinGIS.Image();
double ratio = 0;
MapWinGIS.Extents oldExts = (MapWinGIS.Extents)Program.frmMain.MapMain.Extents;
//锁定地图
Program.frmMain.MapPreview.LockWindow(MapWinGIS.tkLockMode.lmLock);
Program.frmMain.MapMain.LockWindow(MapWinGIS.tkLockMode.lmLock);
if (fullExtents) //更新为全图显示，主地图也更新为全图显示
{
exts = Program.frmMain.m_View.MaxVisibleExtents;
if (Program.frmMain.MapPreview.Width < Program.frmMain.MapPreview.Height) //宽小于高
{
ratio = System.Convert.ToDouble(Program.frmMain.MapPreview.Width / Program.frmMain.MapMain.Width);
}
else //宽大于高
{
ratio = System.Convert.ToDouble(Program.frmMain.MapPreview.Height / Program.frmMain.MapMain.Height);
}
ratio *= 1.5; //缩放比例
Program.frmMain.MapMain.Extents = exts;
exts = (MapWinGIS.Extents)Program.frmMain.MapMain.Extents;
}
else
{
exts = (MapWinGIS.Extents)Program.frmMain.MapMain.Extents;
}
img = (MapWinGIS.Image)(Program.frmMain.MapMain.SnapShot(exts));
MapWinGIS.Utility.ImageUtils cvter = new MapWinGIS.Utility.ImageUtils();
System.Drawing.Image tmpImg = MapWinGIS.Utility.ImageUtils.ObjectToImage(img.Picture, System.Convert.ToInt32(img.Width * ratio), System.Convert.ToInt32(img.Height * ratio));
img.Picture = (stdole.IPictureDisp)(cvter.ImageToIPictureDisp(tmpImg));
img.dX = (exts.xMax - exts.xMin) / img.Width;
img.dY = (exts.yMax - exts.yMin) / img.Height;
img.XllCenter = exts.xMin + 0.5 * img.dX;
img.YllCenter = exts.yMin + 0.5 * img.dX;
img.DownsamplingMode = MapWinGIS.tkInterpolationMode.imHighQualityBicubic;
img.UpsamplingMode = MapWinGIS.tkInterpolationMode.imHighQualityBicubic;
Program.frmMain.MapPreview.RemoveAllLayers();
Program.frmMain.MapPreview.AddLayer(img, true);
Program.frmMain.MapPreview.ExtentPad = 0;
Program.frmMain.MapPreview.ZoomToMaxExtents();
Program.frmMain.m_PreviewMap.m_ShowLocatorBox = true;
Program.frmMain.m_PreviewMap.UpdateLocatorBox();
Program.frmMain.mnuZoomPreviewMap.Enabled = Program.frmMain.MapMain.NumLayers > 0 && Program.frmMain.PreviewMapExtentsValid();
if (Program.frmMain.m_Menu["mnuZoomToPreviewExtents"] != null)
{
Program.frmMain.m_Menu["mnuZoomToPreviewExtents"].Enabled = Program.frmMain.MapMain.NumLayers > 0 && Program.frmMain.PreviewMapExtentsValid();
}
}
catch (Exception ex)
{
Program.g_error = ex.ToString();
Program.ShowError(ex);
}
finally
{
//解锁地图
Program.frmMain.MapPreview.LockWindow(MapWinGIS.tkLockMode.lmUnlock);
Program.frmMain.MapMain.LockWindow(MapWinGIS.tkLockMode.lmUnlock);
}
}
