protected override void OnPreRender(EventArgs e)
{
if (!IsPostBack)
{
string[] colAlias = SampleConstants.BoundDataColumns;
ArrayList ThemeList = new ArrayList();
ThemesAndModifiers.FillThemeNames(ThemeList);
DropDownList1.Items.Clear();
DropDownList1.DataSource = ThemeList;
DropDownList1.DataBind();
// Prepare CheckBoxes, RadioButtons and note label contents.
CheckBoxList1.DataSource = colAlias;
CheckBoxList1.DataBind();
CheckBoxList1.Visible = this.IsCheckBoxListVisible(ThemeList[0] as string);
RadioButtonList1.DataSource = colAlias;
RadioButtonList1.DataBind();
RadioButtonList1.Visible = this.IsRadioButtonListVisible(ThemeList[0] as string);
Label2.Visible = this.IsNoteLabelVisible(ThemeList[0] as string);
Label2.Text = "Please select two columns from below checkboxes.";
DropDownList1.Items.Clear();
DropDownList1.DataSource = ThemeList;
DropDownList1.DataBind();
}
}
// Decide if the note message should be displayed or not.
private bool IsNoteLabelVisible(string themeName)
{
ThemeAndModifierTypes themeType = ThemesAndModifiers.GetThemeAndModifierTypesByName(themeName);
switch (themeType)
{
case ThemeAndModifierTypes.BarTheme:
case ThemeAndModifierTypes.PieTheme:
return(true);
}
return(false);
}
// Decide if the RadioButtonListVisible should be visible or not.
private bool IsRadioButtonListVisible(string themeName)
{
ThemeAndModifierTypes themeType = ThemesAndModifiers.GetThemeAndModifierTypesByName(themeName);
switch (themeType)
{
case ThemeAndModifierTypes.RangedTheme:
case ThemeAndModifierTypes.IndividualValueTheme:
case ThemeAndModifierTypes.DotDensityTheme:
case ThemeAndModifierTypes.GraduatedSymbolTheme:
case ThemeAndModifierTypes.Label_IndividualValueLabelTheme:
case ThemeAndModifierTypes.Label_RangedLabelTheme:
case ThemeAndModifierTypes.Label_OverrideLabelModifier:
return(true);
}
return(false);
}
// Validate user's inputs.
private bool ValidateThemeAndModifierParams(string themeName)
{
ThemeAndModifierTypes themeType = ThemesAndModifiers.GetThemeAndModifierTypesByName(themeName);
switch (themeType)
{
case ThemeAndModifierTypes.RangedTheme:
case ThemeAndModifierTypes.IndividualValueTheme:
case ThemeAndModifierTypes.DotDensityTheme:
case ThemeAndModifierTypes.GraduatedSymbolTheme:
case ThemeAndModifierTypes.Label_IndividualValueLabelTheme:
case ThemeAndModifierTypes.Label_RangedLabelTheme:
case ThemeAndModifierTypes.Label_OverrideLabelModifier:
// Need to select one column, otherwise we can not proceed it.
if (RadioButtonList1.SelectedItem == null)
{
return(false);
}
return(true);
case ThemeAndModifierTypes.BarTheme:
case ThemeAndModifierTypes.PieTheme:
// Need to select two columns.
int selectedItemsSum = 0;
// this is required to customer to select 2 cols.
for (int index = 0; index < CheckBoxList1.Items.Count; index++)
{
if (CheckBoxList1.Items[index].Selected)
{
selectedItemsSum++;
}
}
if (selectedItemsSum != 2)
{
return(false);
}
return(true);
case ThemeAndModifierTypes.FeatureOverrideStyleModifier:
return(true);
}
return(false);
}
// 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;
}
}