/// <summary>
/// This will draw any features that intersect this region. To specify the features
/// directly, use OnDrawFeatures. This will not clear existing buffer content.
/// For that call Initialize instead.
/// </summary>
/// <param name="args">A GeoArgs clarifying the transformation from geographic to image space</param>
/// <param name="regions">The geographic regions to draw</param>
/// <param name="selected">If this is true, nothing is painted, because selected labels get painted together with not selected labels.</param>
public void DrawRegions(MapArgs args, List <Extent> regions, bool selected)
{
if (FeatureSet == null || selected)
{
return;
}
#if DEBUG
var sw = new Stopwatch();
sw.Start();
#endif
if (FeatureSet.IndexMode)
{
// First determine the number of features we are talking about based on region.
List <int> drawIndices = new List <int>();
foreach (Extent region in regions)
{
if (region != null)
{
// We need to consider labels that go off the screen. Figure a region that is larger.
Extent sur = region.Copy();
sur.ExpandBy(region.Width, region.Height);
// Use union to prevent duplicates. No sense in drawing more than we have to.
drawIndices = drawIndices.Union(FeatureSet.SelectIndices(sur)).ToList();
}
}
List <Rectangle> clips = args.ProjToPixel(regions);
DrawFeatures(args, drawIndices, clips, true);
}
else
{
// First determine the number of features we are talking about based on region.
List <IFeature> drawList = new List <IFeature>();
foreach (Extent region in regions)
{
if (region != null)
{
// We need to consider labels that go off the screen. Figure a region that is larger.
Extent r = region.Copy();
r.ExpandBy(region.Width, region.Height);
// Use union to prevent duplicates. No sense in drawing more than we have to.
drawList = drawList.Union(FeatureSet.Select(r)).ToList();
}
}
List <Rectangle> clipRects = args.ProjToPixel(regions);
DrawFeatures(args, drawList, clipRects, true);
}
#if DEBUG
sw.Stop();
Debug.WriteLine("MapLabelLayer {0} DrawRegions: {1} ms", FeatureSet.Name, sw.ElapsedMilliseconds);
#endif
}
/// <summary>
/// This will draw any features that intersect this region. To specify the features
/// directly, use OnDrawFeatures. This will not clear existing buffer content.
/// For that call Initialize instead.
/// </summary>
/// <param name="args">A GeoArgs clarifying the transformation from geographic to image space</param>
/// <param name="regions">The geographic regions to draw</param>
public void DrawRegions(MapArgs args, List <Extent> regions)
{
if (FeatureSet == null)
{
return;
}
if (FeatureSet.IndexMode)
{
// First determine the number of features we are talking about based on region.
List <int> drawIndices = new List <int>();
foreach (Extent region in regions)
{
if (region != null)
{
// We need to consider labels that go off the screen. figure a region
// that is larger.
Extent sur = region.Copy();
sur.ExpandBy(region.Width, region.Height);
// Use union to prevent duplicates. No sense in drawing more than we have to.
drawIndices = drawIndices.Union(FeatureSet.SelectIndices(sur)).ToList();
}
}
List <Rectangle> clips = args.ProjToPixel(regions);
DrawFeatures(args, drawIndices, clips, true);
}
else
{
// First determine the number of features we are talking about based on region.
List <IFeature> drawList = new List <IFeature>();
foreach (Extent region in regions)
{
if (region != null)
{
// We need to consider labels that go off the screen. figure a region
// that is larger.
Extent r = region.Copy();
r.ExpandBy(region.Width, region.Height);
// Use union to prevent duplicates. No sense in drawing more than we have to.
drawList = drawList.Union(FeatureSet.Select(r)).ToList();
}
}
List <Rectangle> clipRects = args.ProjToPixel(regions);
DrawFeatures(args, drawList, clipRects, true);
}
}
public void RaiseCallbackEvent(String eventArgument)
// public virtual void RaiseCallbackEvent(String eventArgument) //to override in subclass
{
// returnCommand = "REFRESH"; //unsightly refresh when change legend selection
returnCommand = "NOTHING";
// string Nm = SessionName; //not used
GDIMap m = (GDIMap)System.Web.HttpContext.Current.Session[(string)ViewState[ClientID]];
if (m == null)
{
return;
}
string[] arg = eventArgument.Split('|');
string cmd = arg[0].ToUpper();
switch (cmd)
{
case "ZOOMALL":
{
ZoomAll(ref m);
returnCommand = "REFRESHANDHIDEBUFFER";
}
break;
case "SELECT":
{
if (m.Layers.SelectedLayer != null)
{
System.Drawing.Point pt1 = new System.Drawing.Point(Convert.ToInt32(arg[1]), Convert.ToInt32(arg[2]));
System.Drawing.Point pt2 = new System.Drawing.Point(Convert.ToInt32(arg[3]), Convert.ToInt32(arg[4]));
Coordinate pm1 = m.PixelToProj(pt1);
Coordinate pm2 = m.PixelToProj(pt2);
Extent ex = new Extent(Math.Min(pm1.X, pm2.X), Math.Min(pm1.Y, pm2.Y),
Math.Max(pm1.X, pm2.X), Math.Max(pm1.Y, pm2.Y));
IEnvelope MapEnv = m.Extent.ToEnvelope();
m.Layers.SelectedLayer.ClearSelection(out MapEnv);
m.Layers.SelectedLayer.ClearSelection();
IEnvelope affectedarea = null;
// m.Layers.SelectedLayer.Select(m.ViewExtents.ToEnvelope(), ex.ToEnvelope(), Symbology.SelectionMode.IntersectsExtent, out affectedarea);
m.Layers.SelectedLayer.Select(ex.ToEnvelope(), ex.ToEnvelope(), Symbology.SelectionMode.Intersects, out affectedarea);
returnCommand = "STRUCTURE";
}
else
{
returnValue = "<table><tr><td>Select a layer first.<p></td></tr><table>";
returnCommand = "POPUP";
// returnValue = "Select a layer first.";
// returnCommand = "ALERT";
}
}
break;
case "INFO":
{
System.Drawing.Point pt = new System.Drawing.Point(Convert.ToInt32(arg[2]), Convert.ToInt32(arg[3]));
Coordinate pm = m.PixelToProj(pt);
Extent ex = new Extent(pm.X, pm.Y, pm.X, pm.Y);
if (m.Layers.SelectedLayer != null)
{
FeatureSet fs = m.Layers.SelectedLayer.DataSet as FeatureSet;
// List<IFeature> flist = fs.Select(ex); //returns empty list when IndexMode == false
List <int> flist = fs.SelectIndices(ex);
int n = flist.Count;
// returnValue = "<table border='1'>"; //looks goofy
returnValue = "<table>";
if (n > 0)
{
for (int i = 0; i < fs.DataTable.Columns.Count; i++)
{
returnValue += "<tr><td>" + fs.DataTable.Columns[i].ColumnName +
// "</td><td>" + flist[0].DataRow[i].ToString() + "</td></tr>";
"</td><td>" + fs.GetFeature(flist[0]).DataRow[i].ToString() + "</td></tr>";
}
returnValue += "</table>";
returnCommand = "POPUP";
}
}
else
{
returnValue = "<table><tr><td>Select a layer first.<p></td></tr><table>";
returnCommand = "POPUP";
// returnValue = "Select a layer first.";
// returnCommand = "ALERT";
}
}
break;
case "RESIZE":
{
Size NewSz = new Size(Convert.ToInt32(arg[2]), Convert.ToInt32(arg[3]));
Size ActualSz = ControlSize;
if (ActualSz.Width == 0 || ActualSz.Height == 0)
{
ControlSize = NewSz;
ZoomAll(ref m);
returnCommand = "STRUCTURE";
}
else
{
if (NewSz != ActualSz)
{
ControlSize = NewSz;
returnCommand = "STRUCTURE";
}
else
{
returnCommand = "NOTHING";
}
}
}
break;
case "ZOOMRECT":
{
System.Drawing.Point pt1 = new System.Drawing.Point(Convert.ToInt32(arg[1]), Convert.ToInt32(arg[2]));
System.Drawing.Point pt2 = new System.Drawing.Point(Convert.ToInt32(arg[3]), Convert.ToInt32(arg[4]));
Coordinate pm1 = m.PixelToProj(pt1);
Coordinate pm2 = m.PixelToProj(pt2);
Extent x = new Extent(Math.Min(pm1.X, pm2.X),
Math.Min(pm1.Y, pm2.Y),
Math.Max(pm1.X, pm2.X),
Math.Max(pm1.Y, pm2.Y));
m.ViewExtents = x;
returnCommand = "REFRESHANDHIDEBUFFER";
}
break;
case "ZOOMIN":
{
int x = Convert.ToInt32(arg[1]);
int y = Convert.ToInt32(arg[2]);
System.Drawing.Point pntZoomAndCenter = new System.Drawing.Point((x - m.Size.Width / 2), (y - m.Size.Height / 2));
m.MapFrame.Pan(pntZoomAndCenter);
m.ZoomIn();
returnCommand = "REFRESHANDHIDEBUFFER";
}
break;
case "ZOOMOUT":
{
int x = Convert.ToInt32(arg[1]);
int y = Convert.ToInt32(arg[2]);
System.Drawing.Point pnt = new System.Drawing.Point((x - m.Size.Width / 2), (y - m.Size.Height / 2));
m.MapFrame.Pan(pnt);
m.ZoomOut();
returnCommand = "REFRESHANDHIDEBUFFER";
}
break;
case "PAN":
{
int x = Convert.ToInt32(arg[1]);
int y = Convert.ToInt32(arg[2]);
// not used: System.Drawing.Point pnt = new System.Drawing.Point((x - m.Size.Width / 2), (y - m.Size.Height / 2));
m.MapFrame.Pan(new System.Drawing.Point(x, y));
returnCommand = "REFRESH";
}
break;
case "WHEELIN":
{
m.ZoomIn();
returnCommand = "REFRESHANDHIDEBUFFER";
}
break;
case "WHEELOUT":
{
m.ZoomOut();
returnCommand = "REFRESHANDHIDEBUFFER";
}
break;
case "DATAGRID": //moved to here from RaisePostBackEvent
{
if (m.Layers.SelectedLayer != null)
{
//string script=null;
IMapFeatureLayer MFL = (IMapFeatureLayer)m.Layers.SelectedLayer;
int n = MFL.Selection.Count;
FeatureSet fs;
DataTable rs;
if (n > 0)
{
fs = MFL.Selection.ToFeatureSet();
rs = fs.DataTable;
}
else
{
fs = MFL.DataSet as FeatureSet;
rs = fs.DataTable;
}
if (DataOnGrid != null) //Let event handler display grid?
{
DataGridEventArgs e = new DataGridEventArgs();
e.Recordsource = rs;
DataOnGrid(this, e);
}
else //Display default HTML grid
{
returnValue = "<table border='1'><tr>";
for (int h = 0; h < rs.Columns.Count; h++)
{
returnValue += "<th>" + rs.Columns[h].ColumnName + "</th>";
}
returnValue += "</tr>";
string rowHtml;
for (int r = 0; r < rs.Rows.Count; r++)
{ //note: _much_ faster if build each row separately
rowHtml = "<tr>";
for (int c = 0; c < rs.Columns.Count; c++)
{
rowHtml += "<td>" + fs.GetFeature(r).DataRow[c].ToString() + "</td>";
}
rowHtml += "</tr>";
returnValue += rowHtml;
}
returnValue += "</table>";
returnCommand = "POPUP";
}
}
else
{
returnValue = "<table><tr><td>Select a layer first.<p></td></tr><table>";
returnCommand = "POPUP";
}
}
break;
case "ADDFEATURE": //moved to here from RaisePostBackEvent
{
int num = Convert.ToInt32(arg[1]);
System.Drawing.Point pt = new System.Drawing.Point();
Coordinate[] pm = new Coordinate[num];
for (int i = 0; i < num; i++)
{
pt.X = Convert.ToInt32(arg[(i + 1) * 2]);
pt.Y = Convert.ToInt32(arg[(i + 1) * 2 + 1]);
pm[i] = m.PixelToProj(pt);
}
if (m.Layers.SelectedLayer != null)
{
FeatureSet fs = m.Layers.SelectedLayer.DataSet as FeatureSet;
Feature f;
FeatureType ft = FeatureType.Unspecified;
IMapFeatureLayer MFL = (IMapFeatureLayer)m.Layers.SelectedLayer;
if (MFL.GetType() == typeof(MapPointLayer))
{
ft = FeatureType.Point;
}
if (MFL.GetType() == typeof(MapLineLayer))
{
ft = FeatureType.Line;
}
if (MFL.GetType() == typeof(MapPolygonLayer))
{
ft = FeatureType.Polygon;
}
if (ft != FeatureType.Unspecified)
{
f = new Feature(ft, pm);
try
{
if (AddFeature != null)
{
AddFeature(this, fs, f);
}
else
{
try
{
fs.AddFeature(f);
fs.Save();
}
catch
{
fs.Features.Remove(f);
throw; //re-throw exception
}
fs.InitializeVertices();
}
//Apparently have to force recreating labels when add feature.
if (MFL.LabelLayer != null)
{
// Recreating label layer works.
// MapLabelLayer NewLabels = new MapLabelLayer();
// NewLabels.Symbology = MFL.LabelLayer.Symbology;
// NewLabels.Symbolizer = MFL.LabelLayer.Symbolizer;
// MFL.LabelLayer = NewLabels;
// Recreating just labels also works.
MFL.LabelLayer.CreateLabels();
}
returnCommand = "FORCEREFRESH";
}
catch (Exception e)
{
returnValue = "Unable to save feature.<p>" + e.Message;
returnCommand = "POPUPANDREFRESH"; //erase new shape too
}
// fs.IndexMode = true;
//Adding a feature sets FeatureSet.IndexMode to false,
// causing fs.Select above in INFO case to return a list
// with Count == 0. One workaround is to set IndexMode
// back to true. This does cause all existing labels
// to disapper with refresh, but recreating label layer
// above fixed that. (Also tried InitializeVertices,
// InvalidateEnvelope, InvalidateVertices, UpdateExtents, etc.)
// Oops, setting IndexMode back to true corrupts shapes...
}
}
}
break;
}
//ControlMap = m;
System.Web.HttpContext.Current.Session[(string)ViewState[ClientID]] = m;
if (returnCommand == "STRUCTURE")
{
returnValue = redraw(ref m);
if (OnRedraw != null)
{
OnRedraw(this);
}
}
if (returnCommand == "REFRESH" | returnCommand == "REFRESHANDHIDEBUFFER")
{
returnValue = refresh(ref m);
if (OnRedraw != null)
{
OnRedraw(this);
}
}
}
