User Interaction

4 Jan 201810 minutes to read

Options like zooming, panning, and map selection enables the effective interaction on Map elements.

Map Selection

Each shape in the Map can be selected and deselected during interaction with the shapes.

The selectionColor property is used to get or set the selected shape color. The selectionStroke and selectionStrokeWidth properties are used to customize the selected shape border.

You can select the shape by tapping the shape. The Single selection is enabled by the enableSelection property of shape layer. When enableSelection is set to false, the shapes cannot be selected.

this.mapLayers = [
    {
        shapeData: usMap,
        shapeSettings: {
            fill: "#9CBF4E",
            strokeThickness: "0.5",
            stroke: "White",
            selectionStrokeWidth: 2,
            selectionStroke: "white",
            selectionColor: "#BC5353"
        },
        enableSelection: true
    }];

HTML

<ej-map id="mapcontrol" [layers]="mapLayers">
</ej-map>

MultiSelection

This feature enables you to select multiple Map shapes on mouse taps accompanied by the “Control” key press. To enable this feature, set the selectionMode property as “multiple” along with the enableSelection property.

this.mapLayers = [{
    shapeData: usMap,
    // ...
    enableSelection: true,
    selectionMode: "multiple",
    // ..
}];

HTML

<ej-map id="mapcontrol" [layers]="mapLayers">
</ej-map>

Dragging On Selection

This feature enables you to select the shapes by dragging over the shapes. While dragging over the shapes, a rectangle is generated and the shapes that comes within the rectangle is selected.
You can enable this feature by setting the draggingOnSelection property in the layers to true.

this.mapLayers = [{
    // ...                        
    draggingOnSelection: true
    // ...
}];

HTML

<ej-map id="mapcontrol" [layers]="mapLayers">
</ej-map>

Zooming

The zooming feature enables you to zoom in and out the Map to show in-depth information. It is controlled by the level property of the Map. When the zoom level of the Map control is increased, the Map is zoomed in. When the zoom level is decreased, then the Map is zoomed out.

Properties

The following properties are related to the zooming feature of the Maps control:

level
enableZoom
minValue
maxValue

Level

The level property determines the Map’s scale size when zooming. The default value of level is 1.

NOTE

level cannot be less than 1

EnableZoom

The enableZoom property enables or disables the zooming feature.

MinValue

The minValue property is used to set the minimum zoom level of the Map.

MaxValue

The maxValue property is used to set the maximum zoom level of the Map.

this.mapLayers= [{
        shapeData: usMap
   }];

HTML

<ej-map id="mapcontrol" [layers]="mapLayers" [zoomSettings.minValue]=1 [zoomSettings.maxValue]=20 [zoomSettings.enableZoom]="true" [zoomSettings.level]=1>
</ej-map>

Additional Options to Zoom the Map

Maps can be zoomed by using the following options also,

Zoom method.
mouse scroll.
mouse double tap.
shape selection
Position

Zoom method

You can zoom the Maps by using zoom method. The zoom method contains parameter zoom value. The Map can be zoomed or scaled based on zoom value parameter.

JAVASCRIPT

$("#map").ejMap("zoom", 2);

Mouse scroll

You can zoom the Map with mouse events by using mouse scroll. When the mouse is scrolled up, the Map is zoomed in and when the mouse is scrolled down, the Map is zoomed out.

Mouse double tap

When the Map is double-tapped by using mouse, the zoom in operation is performed.

Shape Selection

Map shape is zoomed to the whole Map area on the shape selected. Animation can be applied for that zooming by using the enableAnimation property as true.

You can enable this feature by setting enableZoomOnSelection property value as ‘true’.

When enableZoomOnSelection property is set to true, then zooming by double click is muted.

HTML

<ej-map id="mapcontrol" [layers]="mapLayers" [zoomSettings.enableZoomOnSelection]="true">
</ej-map>

Positioning

Depending on the latitude and longitude, you can zoom the Map to the exact position. All locations are considered as latitude and longitude values and the exact location is considered as Map coordinates.

The navigateTo is a method that allows you to zoom the Map control to the given location. This method contains three attributes as follows.

Attribute	Type	Description
Latitude	Double	Latitude point of the position
Longitude	Double	Longitude point of the position
level	Double	Zoom level of the map

HTML

<script type="text/javascript">
        function buttonClick() {
            $("#map").ejMap("navigateTo", 13, 80, 5);
        }
    </script>

Panning

The panning feature enables the Map navigation. The enablePan property is used to enable or disable the panning support.

HTML

<ej-map id="mapcontrol" [layers]="mapLayers" [enablePan]="true">
</ej-map>

Factor

Specifies the zoom factor for map zoom value, you can use factor property.

HTML

<ej-map id="mapcontrol" [factor]=''>
</ej-map>

Navigation control is built-in with Maps control. With Navigation control, Maps can be panned in any direction and zoomed. It is possible to show or hide the NavigationControl by enableNavigation property.

HTML

<ej-map id="mapcontrol" [layers]="mapLayers" [navigationControl.enableNavigation]="true" >
</ej-map>

Positions

The Navigation control can be positioned in two ways.

Absolute Position
Dock Position

Absolute Position

Based on the margin values of X and Y-axes, the navigation control can be positioned with the help of the x and y properties available in absolutePosition. For positioning the navigation control based on margins corresponding to a Map, dockPosition value is set as ‘none’.

Dock Position

The navigation control can be positioned in the following locations within the container.

topLeft
topCenter
topRight
centerLeft
center
centerRight
bottomLeft
bottomRight
bottomCenter
bottomRight
none

You can set this option by using dockPosition property in navigationControl.

HTML

<ej-map id="mapcontrol" [layers]="mapLayers" [navigationControl.enableNavigation]="true"
          navigationControl.orientation='vertical' navigationControl.dockPosition='none' 
          [navigationControl.absolutePosition]="{x:'5',y:'16'}">
</ej-map>

Orientation

Set the orientation value for navigation control.

HTML

<ej-map id="mapcontrol" [layers]="mapLayers" [navigationControl.enableNavigation]="true"
          navigationControl.orientation='vertical' navigationControl.dockPosition='none' 
          [navigationControl.absolutePosition]="{x:'5',y:'16'}">
</ej-map>

Content

Specifies the navigation control template for map, you can use content property.

HTML

<ej-map id="mapcontrol" [layers]="mapLayers" [navigationControl.enableNavigation]="true"
          navigationControl.content="">
</ej-map>

Animation

Animation is enabled or disabled using enable animationproperty.

HTML

<ej-map id="mapcontrol" [enableAnimation]="true">
</ej-map>

Enable Layer Change Animation

Enables or Disables the animation for layer change in map, you can use enableLayerChangeAnimation property and the default value is false.

HTML

<li role="presentation" class=""><a data-target="#6zc03vi9pwewb30wznb3f9ssjmomy32h-html" aria-controls="home" role="tab" data-toggle="tab" data-original-lang="html">HTML</a></li><div role="tabpanel" class="tab-pane" id="6zc03vi9pwewb30wznb3f9ssjmomy32h-html" data-original-lang = "html" ><div class="highlight"><pre><code class="language-html" data-lang="html"><span></span><span class="p">&lt;</span><span class="nt">ej-map</span> <span class="na">id</span><span class="o">=</span><span class="s">&quot;mapcontrol&quot;</span> <span class="err">[</span><span class="na">enableChangeLayerAnimation</span><span class="err">]=&quot;</span><span class="na">true</span><span class="err">&quot;</span><span class="p">&gt;</span>
<span class="p">&lt;/</span><span class="nt">ej-map</span><span class="p">&gt;</span></code></pre></div>
</div>

Responsiveness during browser resize

Map is made responsive when resizing the browser by using isResponsive property.

JAVASCRIPT

<li role="presentation" class=""><a data-target="#53lzcl312ob5odldxf3a5g3idxg91j6b-html" aria-controls="home" role="tab" data-toggle="tab" data-original-lang="html">HTML</a></li><div role="tabpanel" class="tab-pane" id="53lzcl312ob5odldxf3a5g3idxg91j6b-html" data-original-lang = "html" ><div class="highlight"><pre><code class="language-html" data-lang="html"><span></span><span class="p">&lt;</span><span class="nt">ej-map</span> <span class="na">id</span><span class="o">=</span><span class="s">&quot;mapcontrol&quot;</span> <span class="err">[</span><span class="na">isResponsive</span><span class="err">]=&quot;</span><span class="na">true</span><span class="err">&quot;</span><span class="p">&gt;</span>
<span class="p">&lt;/</span><span class="nt">ej-map</span><span class="p">&gt;</span></code></pre></div>
</div>

User Interaction

Map Selection

MultiSelection

Dragging On Selection

Zooming

Properties

Level

EnableZoom

MinValue

MaxValue

Additional Options to Zoom the Map

Zoom method

Mouse scroll

Mouse double tap

Shape Selection

Positioning

Panning

Factor

Navigation Control

Positions

Absolute Position

Dock Position

Orientation

Content

Animation

Enable Layer Change Animation

Responsiveness during browser resize