IVZMapChartArrows.Add

Syntax

Add(Value: IVZMapChartArrow): Integer;

Parameters

Value. Map arrow.

Description

The Add method adds an arrow to the collection.

Comments

To clear the arrow collection, use IVZMapChartArrows.Clear.

To remove arrow from the collection by its index, use IVZMapChartArrows.Remove.

Example

Executing the example requires that the repository contains an express report with the EXPRESS identifier containing a map with arrows.

Add links to the Drawing, Express, Metabase, Visualizators system assemblies.

Sub UserProc;
Var
    Metabase: IMetabase;
    EaxAnalyzer: IEaxAnalyzer;
    Map: IVZMapChart;
    Arrows: IVZMapChartArrows;
    Arrow: IVZMapChartArrow;
    ArrowStyle: IVZMapChartArrowStyle;
    Color: IGxColor;
    Pen: IGxPenBase;
    LabelStyle: IVZLabelStyle;
    Brush: IGxBrush;
    Font: IGxFontBase;
    TtStyle: IVZToolTipStyle;
    AV: IVZMapChartArrowVisual;
Begin
    // Get repository
    Metabase := MetabaseClass.Active;
    // Get express report
    EaxAnalyzer := Metabase.ItemById("EXPRESS").Edit As IEaxAnalyzer;
    // Get express report map
    Map := EaxAnalyzer.MapChart.MapChart;
    // Get map arrows
    Arrows := Map.Arrows;
    Arrow := Arrows.Item(0);
    Arrows.Clear;
    Arrows.Add(Arrow);
    // Change identifier, arrow entry and exit points
    Arrow.ArrowId := "ArrowID";
    Arrow.StartShapeId := Map.RootLayer.SubLayers.Item(0).Shapes.Item(10).ShapeId;
    Arrow.EndShapeId := Map.RootLayer.SubLayers.Item(0).Shapes.Item(30).ShapeId;
    // Get default arrow style and change it
    ArrowStyle := Map.DefaultArrowStyle;
    // Change arrow bend angle
    ArrowStyle.Angle := 45;
    // Change arrow type to shaped
    ArrowStyle.ArrowType := MapChartArrowType.Figured;
    // Arrow head size does not depend on its length
    If ArrowStyle.IsRelativeWidth Then
        ArrowStyle.IsRelativeWidth := False;
    End If;
    // Arrow head size
    ArrowStyle.PointerLength := 30;
    ArrowStyle.PointerWidth := 30;
    // Change arrow label position by entire length
    ArrowStyle.TextOrientation := MapChartArrowTextOrientation.AlongTheArrow;
    // Create arrow border
    Color := New GxColor.CreateRGB(0, 0, 0);
    Pen := New GxPen.CreateSolid(Color, 2);
    ArrowStyle.Border := Pen;
    // Apply label style
    LabelStyle := New VZLabelStyle.Create;
    Brush := New GxSolidBrush.Create(New GxColor.CreateRGB(120, 0, 120));
    LabelStyle.Background := Brush;
    LabelStyle.BorderPen := Pen;
    Font := New GxFont.Create("Arial", 12, GxFontStyle.Bold, GxUnit.Point);
    LabelStyle.Font := Font;
    LabelStyle.FontShadowColor := New GxColor.CreateRGB(180, 5, 180);
    LabelStyle.MaskText := "Arrow";
    LabelStyle.NoDataText := "NoData";
    ArrowStyle.LabelStyle := LabelStyle;
    // Apply tooltip style
    TtStyle := New VZTooltipStyle.Create;
    TtStyle.HoverMode := VisualizatorHoverMode.Click;
    TtStyle.Background := Brush;
    TtStyle.BorderPen := Pen;
    TtStyle.Font := Font;
    TtStyle.FontShadowColor := New GxColor.CreateRGB(180, 5, 180);
    TtStyle.MaskText := "Arrow";
    TtStyle.NoDataText := "NoData";
    ArrowStyle.ToolTipStyle := TtStyle;
    // Output metric type to console window
    AV := ArrowStyle.ArrowVisual;
    Debug.WriteLine("Metric type for data mapping to arrow color - " + AV.BackgroundMapping.AttributeId);
    Debug.WriteLine("Metric type for mapping to arrow size - " + AV.BasementWidthMapping.AttributeId);
    // Save changes
    (EaxAnalyzer As IMetabaseObject).Save;
End Sub UserProc;

After executing the example:

All arrows except for one are removed from the collection.
Identifier, entry and exit points are changed for arrow.
A label with style is created.
A tooltip is created on click on arrow.
The console window displays types of metrics for mapping to various settings.