User Interactions in ASP.NET Core Maps Component
18 Nov 20185 minutes to read
Zooming
The zooming feature is used to zoom in and out of Maps to show in-depth information. It is controlled by the ZoomFactor property of the MapsZoomSettings of the Maps. The ZoomFactor is increased or decrease dynamically based on zoom in and out interaction.
Enable zooming
Zooming of Maps is enabled by setting the Enable property of MapsZoomSettings to true.
Enable panning
To enable the panning feature, set the EnablePanning property of MapsZoomSettings to true.
Various type of zooming
Zooming can be performed in following types:
Zooming toolbar
By default, the toolbar is rendered with zoom-in, zoom-out, and reset options when it is set to true in the Enable property of MapsZoomSettings.
The following options are available in toolbar.
- Zoom - Provides rectangular zoom support.
- ZoomIn - Zoom in the Maps.
- ZoomOut - Zoom out the Maps.
- Pan - Switches to panning if rectangular zoom is activated.
- Reset - Restores the Maps to the default view.
Pinch zooming
To enable or disable the pinch zooming, use the PinchZooming property in MapsZoomSettings.
Single-click zooming
To enable or disable the single-click zooming, use the ZoomOnClick property in MapsZoomSettings.
Double-click zooming
To enable or disable the double-click zooming, use the DoubleClickZoom property in MapsZoomSettings.
Mouse wheel zooming
To enable or disable mouse wheel zooming, use the MouseWheelZoom property in MapsZoomSettings.
Selection zooming
To enable or disable selection zooming, use the EnableSelectionZooming property in MapsZoomSettings. The EnablePanning property must be set to false to enable the selection zooming in Maps.
Setting minimum and maximum values for zoom factor
The zooming range can be adjusted using the MinZoom and MaxZoom properties in MapsZoomSettings. The minZoom value is set to 1 by default, and the maxZoom value is set to 10.
Zooming with animation
To zoom in or zoom out the Maps with animation, use the AnimationDuration property in MapsLayer.
Customizing the zoom toolbar
Customizing the buttons in the zoom toolbar
Customizing the tooltip of the zoom toolbar
Selection
Each shape in the Maps can be selected and deselected during interaction with the shapes. Selection is enabled by setting the Enable property of MapsSelectionSettings to true.
The following properties are available to customize the selection of Maps elements such as shapes, bubbles, markers and legends.
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Border- To customize the color, width and opacity of the border of which element is selected in Maps. -
Fill- Applies the color for the element that is selected. -
Opacity- To customize the transparency for the element that is selected. -
EnableMultiSelect- To enable or disable the selection for multiple shapes or markers or bubbles in the Maps.
By tapping on the specific legend, the shapes which are bounded to the selected legend is also selected and vice versa.
Enable selection for bubbles
To enable the selection for bubbles in Maps, set the MapsSelectionSettings in MapsBubble and set the Enable property of MapsSelectionSettings as true.
Enable selection for markers
To enable the selection for markers in Maps, set the MapsSelectionSettings in the MapsMarker and set the Enable property of the MapsSelectionSettings as true.
Enable selection for polygons
Public method for the shape selection
The shapeSelection method can be used to select each shape in the Maps. LayerIndex, propertyName, country name, and selected value as a boolean state(true / false) are the input parameters for this method.
Initial shape selection
The shape is initially selected using the MapsInitialShapeSelection, and the values are mapped to the ShapePath and ShapeValue.
Initial marker selection
Using the InitialMarkerSelection, the marker shape can be selected initially. Markers render based on the Latitude and Longitude values.
Highlight
Each shape in the Maps can be highlighted during mouse hover on the Maps elements such as shapes, bubbles, markers and legends. Highlight is enabled by setting the Enable property of MapsHighlightSettings to true.
The following properties are available to customize the highlight of Maps elements such as shapes, bubbles, markers and legends.
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Border- To customize the color, width and opacity of the border of which element is highlighted in Maps. -
Fill- Applies the color for the element that is highlighted. -
Opacity- To customize the transparency for the element that is highlighted.
Hovering on the specific legend, the shapes which are bounded to the selected legend is also highlighted and vice versa.
Enable highlight for bubbles
To enable the highlight for bubbles in Maps, set the MapsHighlightSettings in MapsBubble and set the Enable property of MapsHighlightSettings as true.
Enable highlight for markers
To enable the highlight for markers in Maps, set the MapsHighlightSettings in MapsMarker and set the Enable property of MapsHighlightSettings as true.
Enable highlight for polygons
Tooltip
On mouse over or touch end event, the tooltip is used to get more information about the layer, bubble, or marker. It can be enabled separately for layer or bubble or marker by using the Visible property of MapsTooltipSettings as true. The ValuePath property in the tooltip takes the field name that presents in data source and displays that value as tooltip text. The TooltipDisplayMode property is used to change the display mode of the tooltip in Maps. Following display modes of tooltip are available in the Maps component. By default, TooltipDisplayMode is set to MouseMove.
Customization
The following properties are available in the MapsTooltipSettings to customize the tooltip of the Maps component.
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Border- To customize the color, width and opacity of the border of the tooltip in layers, markers, and bubbles of Maps. -
Fill- Applies the color of the tooltip in layers, markers, and bubbles of Maps. -
Format- To customize the format of the tooltip in layers, markers, and bubbles of Maps -
TextStyle- To customize the style of the text in the tooltip for layers, markers, and bubbles of Maps.
Tooltip template
The HTML element can be rendered in the tooltip of the Maps using the Template property of the MapsTooltipSettings. In the following example, ${value1} and ${value2} are the place holders in the HTML element to display the value1 and value2 values of the corresponding shape.
