// Remove all IndividualValueThemes from the World layer
private void DoClearThemes()
{
// First obtain a reference to the layer
FeatureLayer lyr = (FeatureLayer)mapControl1.Map.Layers[_layerName];
if (lyr == null)
{
MessageBox.Show(
"Layer " + _layerName + " not found; no themes to remove.");
return;
}
// Reference the layer's collection of themes and other modifiers
FeatureStyleModifiers modifiers = lyr.Modifiers;
// remove any IndividualValueTheme objects
ArrayList aliases = new ArrayList();
foreach (FeatureStyleModifier mod in modifiers)
{
IndividualValueTheme ivTheme = mod as IndividualValueTheme;
if (ivTheme != null)
{
// We found a modifier that is an IndividualValueTheme.
// Remember its name so we can remove it after this loop.
aliases.Add(ivTheme.Alias);
}
}
foreach (string s in aliases)
{
modifiers.Remove(s);
}
MessageBox.Show("Removed " + aliases.Count
+ " IndividualValueTheme(s) from layer: " + _layerName);
}
// Examine the layer's IndividualValueTheme, if there is one,
// and display information about some of the theme's properties.
private void DoThemeInfo()
{
// First obtain a reference to the layer
FeatureLayer lyr = (FeatureLayer)mapControl1.Map.Layers[_layerName];
if (lyr == null)
{
MessageBox.Show(
"Layer " + _layerName + " not found; no theme information to display.");
return;
}
// Reference the layer's collection of themes and other modifiers
FeatureStyleModifiers modifiers = lyr.Modifiers;
// See if the collection contains any IndividualValueTheme objects
IndividualValueTheme ivTheme = null;
int counter = 0;
foreach (FeatureStyleModifier mod in modifiers)
{
if (mod is IndividualValueTheme)
{
// We did find an IndividualValueTheme in the collection
counter++;
if (ivTheme == null)
{
// Keep a reference to the top-most theme we find
ivTheme = mod as IndividualValueTheme;
}
}
}
if (counter > 1)
{
MessageBox.Show("Found " + counter + " IndividualValueThemes on layer "
+ _layerName + "; displaying information for topmost theme.");
}
if (ivTheme != null)
{
string str = "Individual Value Theme properties: ";
str += "Theme name: '" + ivTheme.Name + "'. ";
str += "Theme expression: '" + ivTheme.Expression + "'. ";
str += "Theme has " + ivTheme.Bins.Count + " bins. ";
if (ivTheme.Visible)
{
str += " Theme is visible at the current zoom level. ";
}
else
{
str += " Theme is not currently visible. ";
}
MessageBox.Show(str);
}
else
{
MessageBox.Show("No IndividualValueTheme objects found for layer " + _layerName);
}
}
// Add an IndividualValueTheme to the specified layer.
private void DoAddTheme(Map myMap, string layerToTheme, string expression)
{
// First obtain a reference to the layer that will own the theme
FeatureLayer lyr = (FeatureLayer)myMap.Layers[layerToTheme];
if (lyr == null)
{
MessageBox.Show("Layer " + layerToTheme + " not found; theme cannot be added.");
return;
}
IndividualValueTheme ivTheme = null;
try
{
// Create the theme. Pass null for the theme's alias.
ivTheme = new IndividualValueTheme(lyr, expression, null);
}
catch (System.NullReferenceException)
{
// This exception can occur if you specify an expression
// that is not valid for this layer.
MessageBox.Show("Unable to create theme; check expression syntax. "
+ "Layer: " + layerToTheme + ", Expression: " + expression,
"Error");
return;
}
// Set the theme's ApplyStylePart property to control which display
// attributes are overridden by the theme. If you specify StylePart.All:
// ivTheme.ApplyStylePart = StylePart.All;
// the theme will control each country's fill pattern and color.
// If you specify StylePart.Color, the theme will control each country's
// color, but will not alter each region's fill pattern.
// If you have specified a fill pattern using a display style override,
// and you do not want the individual value theme to interfere with that
// fill pattern, set ApplyStylePart to StylePart.Color.
ivTheme.ApplyStylePart = StylePart.Color;
// Now add the theme to the layer's collection of style modifiers.
// Insert it at the top of the list of modifiers, so that it will
// definitely be visible. (If the layer has other modifiers,
// such as style overrides, and you append the theme to the
// bottom of the list, the style overrides might override the theme.)
lyr.Modifiers.Insert(0, ivTheme);
MessageBox.Show("Added new IndividualValueTheme to layer " + _layerName
+ " using expression: " + expression, "Theme Added");
}
public override void Process()
{
MapControlModel model = MapControlModel.GetModelFromSession();
model.SetMapSize(MapAlias, MapWidth, MapHeight);
//get map object from map model
MapInfo.Mapping.Map map = model.GetMapObj(MapAlias);
FeatureLayer fLyr = map.Layers[ProjectConstants.ThemeLayerAlias] as FeatureLayer;
fLyr.Modifiers.Clear();
map.Legends.Clear();
//create theme
IndividualValueTheme iTheme = new IndividualValueTheme(fLyr, ProjectConstants.IndColumnName, ProjectConstants.ThemeAlias);
fLyr.Modifiers.Insert(0, iTheme);
//create legend based on the individual value theme
Legend lg = map.Legends.CreateLegend(new Size(236, 282));
//create legend frame
ThemeLegendFrame lgFrame = LegendFrameFactory.CreateThemeLegendFrame(iTheme);
lg.Frames.Append(lgFrame);
//modify legend frame style
lgFrame.BackgroundBrush = new SolidBrush(Color.AliceBlue);
lgFrame.Title = "World Country Legend";
lgFrame.SubTitle = " ";
MapInfo.Styles.Font titleFont = new MapInfo.Styles.Font("Arial", 10);
titleFont.ForeColor = Color.DarkBlue;
titleFont.FontWeight = FontWeight.Bold;
lgFrame.TitleStyle = titleFont;
MapInfo.Styles.Font rowTextStyle = new Font("Arial", 8);
rowTextStyle.FontWeight = FontWeight.Bold;
lgFrame.RowTextStyle = rowTextStyle;
//stream map image back to client
MemoryStream ms = model.GetMap(MapAlias, MapWidth, MapHeight, ExportFormat);
StreamImageToClient(ms);
}
public override void Process()
{
MapControlModel model = MapControlModel.GetModelFromSession();
model.SetMapSize(MapAlias, MapWidth, MapHeight);
//get map object from map model
MapInfo.Mapping.Map map = model.GetMapObj(MapAlias);
FeatureLayer fLyr = map.Layers[ProjectConstants.ThemeLayerAlias] as FeatureLayer;
fLyr.Modifiers.Clear();
map.Legends.Clear();
//create theme
IndividualValueTheme iTheme = new IndividualValueTheme(fLyr, ProjectConstants.IndColumnName, ProjectConstants.ThemeAlias);
fLyr.Modifiers.Insert(0, iTheme);
//create legend based on the individual value theme
Legend lg = map.Legends.CreateLegend(new Size(236, 282));
//create legend frame
ThemeLegendFrame lgFrame = LegendFrameFactory.CreateThemeLegendFrame(iTheme);
lg.Frames.Append(lgFrame);
//modify legend frame style
lgFrame.BackgroundBrush = new SolidBrush(Color.AliceBlue);
lgFrame.Title = "World Country Legend";
lgFrame.SubTitle = " ";
MapInfo.Styles.Font titleFont = new MapInfo.Styles.Font("Arial", 10);
titleFont.ForeColor = Color.DarkBlue;
titleFont.FontWeight = FontWeight.Bold;
lgFrame.TitleStyle = titleFont;
MapInfo.Styles.Font rowTextStyle = new Font("Arial", 8);
rowTextStyle.FontWeight = FontWeight.Bold;
lgFrame.RowTextStyle = rowTextStyle;
//stream map image back to client
MemoryStream ms = model.GetMap(MapAlias, MapWidth, MapHeight, ExportFormat);
StreamImageToClient(ms);
}
private void ModifyTheme()
{
try
{
// Bring up the modify theme dialog for modifier themes
if (_themedFeatureLayer != null)
{
FeatureStyleModifier modifier = _themedFeatureLayer.Modifiers["theme1"];
if (modifier != null)
{
if (modifier is DotDensityTheme)
{
DotDensityTheme thm = modifier as DotDensityTheme;
ModifyDotDensityThemeDlg dlg = new ModifyDotDensityThemeDlg(mapControl1.Map, thm);
dlg.ShowDialog();
}
else if (modifier is RangedTheme)
{
RangedTheme thm = modifier as RangedTheme;
ModifyRangedThemeDlg dlg = new ModifyRangedThemeDlg(mapControl1.Map, thm);
dlg.ShowDialog();
}
else if (modifier is IndividualValueTheme)
{
IndividualValueTheme thm = modifier as IndividualValueTheme;
ModifyIndValueThemeDlg dlg = new ModifyIndValueThemeDlg(mapControl1.Map, thm);
dlg.ShowDialog();
}
_themedFeatureLayer.Invalidate();
}
}
// Bring up the modify theme dialog for object themes
ObjectThemeLayer thmLayer = mapControl1.Map.Layers["theme1"] as ObjectThemeLayer;
if (thmLayer != null)
{
if (thmLayer.Theme is GraduatedSymbolTheme)
{
GraduatedSymbolTheme thm = thmLayer.Theme as GraduatedSymbolTheme;
ModifyGradSymbolThemeDlg dlg = new ModifyGradSymbolThemeDlg(mapControl1.Map, thm);
dlg.ShowDialog();
}
else if (thmLayer.Theme is BarTheme)
{
BarTheme thm = thmLayer.Theme as BarTheme;
ModifyBarThemeDlg dlg = new ModifyBarThemeDlg(mapControl1.Map, thm);
dlg.ShowDialog();
}
else if (thmLayer.Theme is PieTheme)
{
PieTheme thm = thmLayer.Theme as PieTheme;
ModifyPieThemeDlg dlg = new ModifyPieThemeDlg(mapControl1.Map, thm);
dlg.ShowDialog();
}
thmLayer.RebuildTheme();
}
if (_themedLabelLayer != null)
{
LabelModifier labelModifier = _themedLabelLayer.Sources[0].Modifiers["theme1"];
if (labelModifier != null)
{
if (labelModifier is RangedLabelTheme)
{
RangedLabelTheme thm = labelModifier as RangedLabelTheme;
ModifyRangedThemeDlg dlg = new ModifyRangedThemeDlg(mapControl1.Map, thm);
dlg.ShowDialog();
}
else if (labelModifier is IndividualValueLabelTheme)
{
IndividualValueLabelTheme thm = labelModifier as IndividualValueLabelTheme;
ModifyIndValueThemeDlg dlg = new ModifyIndValueThemeDlg(mapControl1.Map, thm);
dlg.ShowDialog();
}
_themedLabelLayer.Invalidate();
}
}
}
catch (MapException)
{
}
}
// Disable other LabelLayers if we demo a new LabelLayer with theme or modifier sample.
// so User could see theme/modifier label layer clearly.
// public static void HandleLabelLayerVisibleStatus(Map map)
// {
// if(map == null) return;
// for(int index=0; index < map.Layers.Count; index++)
// {
// IMapLayer lyr = map.Layers[index];
// if(lyr is LabelLayer)
// {
// LabelLayer ll = lyr as LabelLayer;
// if(map.Layers[SampleConstants.NewLabelLayerAlias] != null
// && ll.Alias != SampleConstants.NewLabelLayerAlias)
// {
// ll.Enabled = false;
// }
// else
// {
// ll.Enabled = true;
// }
// }
// }
// }
// Create all MapXtreme.Net themes and modifiers for the bound data
// and add them into the corresponding Map object.
private void CreateThemeOrModifier(string themeName)
{
Map myMap = GetMapObj();
if (myMap == null)
{
return;
}
// Clean up all temp themes or modifiers from the Map object.
this.CleanUp(myMap);
FeatureLayer fLyr = myMap.Layers[SampleConstants.ThemeLayerAlias] as FeatureLayer;
ThemeAndModifierTypes themeType = ThemesAndModifiers.GetThemeAndModifierTypesByName(themeName);
string alias = ConstructThemeAlias(themeType);
switch (themeType)
{
case ThemeAndModifierTypes.RangedTheme:
RangedTheme rt = new RangedTheme(fLyr, GetThemeOrModifierExpression(), alias, 5, MapInfo.Mapping.Thematics.DistributionMethod.EqualCountPerRange);
fLyr.Modifiers.Append(rt);
break;
case ThemeAndModifierTypes.DotDensityTheme:
DotDensityTheme ddt = new DotDensityTheme(fLyr, GetThemeOrModifierExpression(), alias, Color.Purple, DotDensitySize.Large);
ddt.ValuePerDot = 2000000d;
fLyr.Modifiers.Append(ddt);
break;
case ThemeAndModifierTypes.IndividualValueTheme:
IndividualValueTheme ivt = new IndividualValueTheme(fLyr, GetThemeOrModifierExpression(), alias);
fLyr.Modifiers.Append(ivt);
break;
case ThemeAndModifierTypes.PieTheme:
PieTheme pt = new PieTheme(myMap, fLyr.Table, GetThemeOrModifierExpressions());
ObjectThemeLayer otlPt = new ObjectThemeLayer("PieTheme", alias, pt);
GetTheGroupLayer().Insert(0, otlPt);
break;
case ThemeAndModifierTypes.BarTheme:
BarTheme bt = new BarTheme(myMap, fLyr.Table, GetThemeOrModifierExpressions());
bt.DataValueAtSize = 10000000;
bt.Size = new MapInfo.Engine.PaperSize(0.1, 0.1, MapInfo.Geometry.PaperUnit.Inch);
bt.Width = new MapInfo.Engine.PaperSize(0.1, MapInfo.Geometry.PaperUnit.Inch);
ObjectThemeLayer otlBt = new ObjectThemeLayer("BarTheme", alias, bt);
GetTheGroupLayer().Insert(0, otlBt);
break;
case ThemeAndModifierTypes.GraduatedSymbolTheme:
GraduatedSymbolTheme gst = new GraduatedSymbolTheme(fLyr.Table, GetThemeOrModifierExpression());
ObjectThemeLayer otlGst = new ObjectThemeLayer("GraduatedSymbolTheme", alias, gst);
GetTheGroupLayer().Insert(0, otlGst);
break;
case ThemeAndModifierTypes.FeatureOverrideStyleModifier:
FeatureOverrideStyleModifier fosm = new FeatureOverrideStyleModifier("OverrideTheme", alias);
SimpleInterior fs = new SimpleInterior((SimpleInterior.MaxFillPattern - SimpleInterior.MinFillPattern) / 2, Color.FromArgb(10, 23, 90), Color.FromArgb(33, 35, 35), false);
fs.SetApplyAll();
SimpleLineStyle lineStyle = new SimpleLineStyle(new LineWidth(2, LineWidthUnit.Point), (SimpleLineStyle.MaxLinePattern - SimpleLineStyle.MinLinePattern) / 2);
lineStyle.Color = Color.FromArgb(111, 150, 230);
lineStyle.Interleaved = false;
lineStyle.SetApplyAll();
fosm.Style.AreaStyle = new AreaStyle(lineStyle, fs);
fLyr.Modifiers.Append(fosm);
break;
case ThemeAndModifierTypes.Label_IndividualValueLabelTheme:
IndividualValueLabelTheme ivlt = new IndividualValueLabelTheme(fLyr.Table, GetThemeOrModifierExpression(), alias);
CreateLabelLayer(myMap, fLyr.Table, GetThemeOrModifierExpression()).Sources[0].Modifiers.Append(ivlt);
break;
case ThemeAndModifierTypes.Label_RangedLabelTheme:
RangedLabelTheme rlt = new RangedLabelTheme(fLyr.Table, GetThemeOrModifierExpression(), alias, 5, DistributionMethod.EqualCountPerRange);
CreateLabelLayer(myMap, fLyr.Table, GetThemeOrModifierExpression()).Sources[0].Modifiers.Append(rlt);
break;
case ThemeAndModifierTypes.Label_OverrideLabelModifier:
OverrideLabelModifier olm = new OverrideLabelModifier(alias, "OverrideLabelModifier");
MapInfo.Styles.Font font = new MapInfo.Styles.Font("Arial", 24, Color.Red, Color.Yellow, FontFaceStyle.Italic,
FontWeight.Bold, TextEffect.Halo, TextDecoration.All, TextCase.AllCaps, true, true);
font.Attributes = StyleAttributes.FontAttributes.All;
olm.Properties.Style = new TextStyle(font);
olm.Properties.Caption = GetThemeOrModifierExpression();
CreateLabelLayer(myMap, fLyr.Table, GetThemeOrModifierExpression()).Sources[0].Modifiers.Append(olm);
break;
default:
break;
}
}
// Create all MapXtreme.Net themes and modifiers for the bound data
// and add them into the corresponding Map object.
private void CreateThemeOrModifier(string themeName)
{
Map myMap = GetMapObj();
if(myMap == null)return;
// Clean up all temp themes or modifiers from the Map object.
this.CleanUp(myMap);
FeatureLayer fLyr = myMap.Layers[SampleConstants.ThemeLayerAlias] as FeatureLayer;
ThemeAndModifierTypes themeType = ThemesAndModifiers.GetThemeAndModifierTypesByName(themeName);
string alias = ConstructThemeAlias(themeType);
switch(themeType)
{
case ThemeAndModifierTypes.RangedTheme:
RangedTheme rt = new RangedTheme(fLyr, GetThemeOrModifierExpression(), alias, 5, MapInfo.Mapping.Thematics.DistributionMethod.EqualCountPerRange);
fLyr.Modifiers.Append(rt);
break;
case ThemeAndModifierTypes.DotDensityTheme:
DotDensityTheme ddt = new DotDensityTheme(fLyr, GetThemeOrModifierExpression(), alias, Color.Purple, DotDensitySize.Large);
ddt.ValuePerDot = 2000000d;
fLyr.Modifiers.Append(ddt);
break;
case ThemeAndModifierTypes.IndividualValueTheme:
IndividualValueTheme ivt = new IndividualValueTheme(fLyr, GetThemeOrModifierExpression(), alias);
fLyr.Modifiers.Append(ivt);
break;
case ThemeAndModifierTypes.PieTheme:
PieTheme pt = new PieTheme(myMap, fLyr.Table, GetThemeOrModifierExpressions());
ObjectThemeLayer otlPt = new ObjectThemeLayer("PieTheme", alias, pt);
GetTheGroupLayer().Insert(0, otlPt);
break;
case ThemeAndModifierTypes.BarTheme:
BarTheme bt = new BarTheme(myMap, fLyr.Table, GetThemeOrModifierExpressions());
bt.DataValueAtSize = 10000000;
bt.Size = new MapInfo.Engine.PaperSize(0.1, 0.1, MapInfo.Geometry.PaperUnit.Inch);
bt.Width = new MapInfo.Engine.PaperSize(0.1, MapInfo.Geometry.PaperUnit.Inch);
ObjectThemeLayer otlBt = new ObjectThemeLayer("BarTheme", alias, bt);
GetTheGroupLayer().Insert(0, otlBt);
break;
case ThemeAndModifierTypes.GraduatedSymbolTheme:
GraduatedSymbolTheme gst = new GraduatedSymbolTheme(fLyr.Table, GetThemeOrModifierExpression());
ObjectThemeLayer otlGst = new ObjectThemeLayer("GraduatedSymbolTheme", alias, gst);
GetTheGroupLayer().Insert(0, otlGst);
break;
case ThemeAndModifierTypes.FeatureOverrideStyleModifier:
FeatureOverrideStyleModifier fosm = new FeatureOverrideStyleModifier("OverrideTheme", alias);
SimpleInterior fs = new SimpleInterior((SimpleInterior.MaxFillPattern - SimpleInterior.MinFillPattern) / 2, Color.FromArgb(10, 23, 90), Color.FromArgb(33, 35, 35), false);
fs.SetApplyAll();
SimpleLineStyle lineStyle = new SimpleLineStyle(new LineWidth(2, LineWidthUnit.Point), (SimpleLineStyle.MaxLinePattern - SimpleLineStyle.MinLinePattern) /2);
lineStyle.Color = Color.FromArgb(111, 150, 230);
lineStyle.Interleaved = false;
lineStyle.SetApplyAll();
fosm.Style.AreaStyle = new AreaStyle(lineStyle, fs);
fLyr.Modifiers.Append(fosm);
break;
case ThemeAndModifierTypes.Label_IndividualValueLabelTheme:
IndividualValueLabelTheme ivlt = new IndividualValueLabelTheme(fLyr.Table, GetThemeOrModifierExpression(), alias);
CreateLabelLayer(myMap, fLyr.Table, GetThemeOrModifierExpression()).Sources[0].Modifiers.Append(ivlt);
break;
case ThemeAndModifierTypes.Label_RangedLabelTheme:
RangedLabelTheme rlt = new RangedLabelTheme(fLyr.Table, GetThemeOrModifierExpression(), alias, 5, DistributionMethod.EqualCountPerRange);
CreateLabelLayer(myMap, fLyr.Table, GetThemeOrModifierExpression()).Sources[0].Modifiers.Append(rlt);
break;
case ThemeAndModifierTypes.Label_OverrideLabelModifier:
OverrideLabelModifier olm = new OverrideLabelModifier(alias, "OverrideLabelModifier");
MapInfo.Styles.Font font = new MapInfo.Styles.Font("Arial", 24, Color.Red, Color.Yellow, FontFaceStyle.Italic,
FontWeight.Bold, TextEffect.Halo, TextDecoration.All, TextCase.AllCaps, true, true);
font.Attributes = StyleAttributes.FontAttributes.All;
olm.Properties.Style = new TextStyle(font);
olm.Properties.Caption = GetThemeOrModifierExpression();
CreateLabelLayer(myMap, fLyr.Table, GetThemeOrModifierExpression()).Sources[0].Modifiers.Append(olm);
break;
default:
break;
}
}
// Add an IndividualValueTheme to the specified layer.
private void DoAddTheme(Map myMap, string layerToTheme, string expression)
{
// First obtain a reference to the layer that will own the theme
FeatureLayer lyr = (FeatureLayer)myMap.Layers[layerToTheme];
if (lyr == null)
{
MessageBox.Show("Layer " + layerToTheme + " not found; theme cannot be added.");
return;
}
IndividualValueTheme ivTheme = null;
try
{
// Create the theme. Pass null for the theme's alias.
ivTheme = new IndividualValueTheme(lyr, expression, null);
}
catch (System.NullReferenceException)
{
// This exception can occur if you specify an expression
// that is not valid for this layer.
MessageBox.Show("Unable to create theme; check expression syntax. "
+ "Layer: " + layerToTheme + ", Expression: " + expression,
"Error");
return;
}
// Set the theme's ApplyStylePart property to control which display
// attributes are overridden by the theme. If you specify StylePart.All:
// ivTheme.ApplyStylePart = StylePart.All;
// the theme will control each country's fill pattern and color.
// If you specify StylePart.Color, the theme will control each country's
// color, but will not alter each region's fill pattern.
// If you have specified a fill pattern using a display style override,
// and you do not want the individual value theme to interfere with that
// fill pattern, set ApplyStylePart to StylePart.Color.
ivTheme.ApplyStylePart = StylePart.Color;
// Now add the theme to the layer's collection of style modifiers.
// Insert it at the top of the list of modifiers, so that it will
// definitely be visible. (If the layer has other modifiers,
// such as style overrides, and you append the theme to the
// bottom of the list, the style overrides might override the theme.)
lyr.Modifiers.Insert(0, ivTheme);
MessageBox.Show("Added new IndividualValueTheme to layer " + _layerName
+ " using expression: " + expression, "Theme Added");
}
