DataV:Arrow Drawing

Chart style

Arrow plotting is a type of media widget. It allows you to add arrow elements of a custom style to a visual application or a module of a visual application.

Settings

• Search Configuration: Click Search Configuration in the upper-right corner of the Configuration panel. In the Search Configuration panel, enter the name of the configuration items that you want to search for to quickly locate the configuration items. Fuzzy match is supported. For more information, see Search for asset configurations.

• Size: indicates the size of a widget, including its pixel width and height. You can click the icon to lock the aspect ratio of the widget and modify the width and height of the widget in equal proportion. After you click this icon again, you can adjust the width and height as needed.

• Position: the position of a widget, which is indicated by pixel X and Y coordinates. X-coordinate indicates the pixel distance between the upper-left corner of the widget and the left border of the canvas. Y-coordinate indicates the pixel distance between the upper-left corner of the widget and the upper border of the canvas.

• Rotation Angle: the angle of a rotation that uses the center point of a widget as the rotation point. The unit is degrees (°). You can use one of the following methods to control the rotation angle of a widget:

  • Directly enter the degrees in the Rotation Angle spin box or click the plus sign (+) or minus sign (-) to increase or decrease the value in the Rotation Angle spin box.

  • Drag the black dot in the icon to control the rotation angle of the widget.

  • Click the icon to flip the widget style.

  • Click the icon to flip the widget style.

• Opacity: Valid values: 0 to 1. If this parameter is set to 0, the widget is hidden. If this parameter is set to 1, the widget is completely displayed. Default value: 1.

• Line Style: the style of the line in the arrow plot.

  Parameter	description
  Left Height Scale	The ratio of the line end on the left side of the widget to the border height of the widget. The value ranges from 0 to 1. A larger ratio indicates a lower line end.
  Right Height Scale	The ratio of the line end on the right side of the widget to the border height of the widget. The value ranges from 0 to 1. A larger ratio indicates a lower line end.
  Arc thickness	The thickness of the line arc. Valid values: 0 to 20. Unit: pixels. The larger the value, the thicker the arc.
  Linetype	The style of the line curve.
  End Shape	Shape selection for endpoints in a line, optional, including round and butt.
  Dotted Line	The dashed pattern of the spaces between the endpoints and the end points in the line.
  Animation Direction	The animated direction of the line, optionally left and right.
  Dotted Speed	The movement speed of the dotted line, the value range is between 0 and 300, the larger the value, the faster the speed.
  Fill Color	The fill color of the line. For more information, see color picker instructions.

• Arrow Style: the style of the arrow in the arrow plot.

  Parameter	description
  Show Left Arrow	Turn on the switch to show the left arrow style; turn off the switch to hide the left arrow style.
  Show Right Arrow	If you turn on the switch, the right arrow style is displayed. If you turn off the switch, the right arrow style is hidden.
  Width	The width of the arrow. Valid values: 0 to 100. Unit: pixels. The larger the value, the larger the width of the arrow.
  Height	The height of the arrow. Valid values: 0 to 100. Unit: pixels. The greater the value, the greater the height of the arrow.
  Fill Color	The fill color of the arrow. For more information, see color picker instructions.

• Text Style: the style of the text in the arrow plot.

  Parameter	description
  Display	Turn on the switch to show the text style; turn off the switch to hide the text style.
  Text Position	The placement style of the text. Valid values: Text Above and Text Below.
  Text and Line Spacing	The parallel distance between the text and the line. Valid values: 0 to 100. Unit: pixels. The larger the value, the larger the separation distance.
  Animation Direction	The direction in which the text animation is played. Valid values: Left and Right.
  Animation Interval	The time when the text is played through the animation. Valid values: 0 to 10. Unit: seconds. The higher the number, the longer it takes for the animation to play one turn.
  Font size	The font size of the text.
  Font color	The font color of the text. For more information, see color picker instructions.
  Font weight	The weight of the font.
  Font	The style of the font. The default value is Microsoft Yahei.

Data tab

Configuration field description

Interaction tab

This widget does not support interaction events.

Configure interactions in Blueprint Editor

1. In Canvas Editor, right-click a widget in the Layer panel and select Add to Blueprint Editor.

2. Click the icon in the upper-left corner.

3. In Blueprint Editor, click the Arrow Plot widget in the Added Nodes pane. You can view the parameters in the canvas, as shown in the following figure.

   • Events

     Events	Description
     When the data request is completed	The event is triggered with the processed JSON data after a data interface request is responded and processed by a filter. For more information about specific data examples, see the Data Response Result section of the Data tab in the right-side configuration panel of the canvas editor.
     When a data request fails	The event that is returned when a data interface request fails (such as network problems or interface errors) and is processed by the filter. The event also throws the processed JSON data. For more information about specific data examples, see the Data Response Result section of the Data tab in the right-side configuration panel of the canvas editor.

   • Action

     Action	Description
     Requests	This action is performed to request the server data again. The data sent by an upstream data processing node or layer node is used as a parameter. For example, if the API data source is https://api.test and the data transferred to the request data interface is { id: '1'}, the final request interface is https://api.test?id=1.
     Import Data	After data of a widget is processed in accordance with its drawing format, the widget is imported for redrawing. You do not need to request server data again. For more information about specific data examples, see the Data Response Result section of the Data tab in the right-side configuration panel of the canvas editor.
     Update component configurations	Style configurations of widgets are dynamically updated. Before this action is executed, you must click the widget in Canvas Editor, click the Settings tab in the right-side panel, and click Copy Configurations to... to obtain widget configurations. After that, change the style field for the data processing node in Blueprint Editor.
     Display	Displays the widget. The following example shows the reference data. return { "animationType": "", "animationDuration": 1000, "animationEasing": "linear" };
     Hide	The following example shows how to hide a widget. return { "animationType": "", "animationDuration": 1000, "animationEasing": "linear" };
     Switch to the implicit state	Specifies whether to show or hide a widget. The following example shows the reference data. return { "animationIn": { "animationType": "", "animationDuration": 1000, "animationEasing": "linear" }, "animationOut": { "animationType": "", "animationDuration": 1000, "animationEasing": "linear" } };
     China Mobile	Move a widget to a specified location. The following example shows the reference data. return { // The positioning type. to indicates absolute positioning, whereas by indicates relative positioning. The default value is to. "positionType": "to", // The location, which is indicated by the x and y coordinates. "attr": { "x": 0, "y": 0 }, // The animation type. "animation": { "enable": false, // The duration in which animation is displayed. "animationDuration": 1000, // The animation curve, which can be set to linear|easeInOutQuad|easeInOutExpo. "animationEasing": "linear" } };