MLCamera Methods

This method allows you to convert the coordinate system from a widget to a point (receiver’s coordinate system).

Syntax

convertPointFromWidget(point, fromWidget)

Parameters

point

[JSObject]- Mandatory

You can specify an object with keys as x and y. You can specify the values in all (dp, px and %) units of measurement.

fromWidget

[widgetref]- Mandatory

This parameter is the handle to the widget instance. Based on this parameter, the coordinate system is converted from the widget to a point (receiver’s coordinate system).

Example

Form1.widget1.convertPointFromWidget({
    x: "10dp",
    y: "20dp"
}, widget2);

Platform Availability

• iOS, Android, Windows, and SPA

Using the convertPointToWidget method, you can modify the co-ordinate system. You can convert the receiver’s co-ordinate system from a point to a Widget.

Syntax

convertPointToWidget(point, toWidget)

Parameters

point

[JSObject]- Mandatory. You can specify an object with keys as x and y. You can specify the values in all (dp, px and %) units of measurement.

toWidget

[widgetref] - Mandatory. This parameter is the handle to the widget instance. Based on this parameter, the coordinate system is converted from a point to a widget.

Example

Form1.widget2.convertPointToWidget({
    x: "20dp",
    y: "30dp"
}, widget1);

Platform Availability

• iOS, Android, Windows, and SPA

This method allows you to remove a child widget from a parent widget.

Syntax

removeFromParent()

Read/Write

Yes - (Read and Write)

Example

//This is a generic method that is applicable for various widgets.
//Here, we have shown how to use the removeFromParent Method for a Calendar widget.
//You need to make a corresponding call of the removeFromParent method for other applicable widgets.

Form1.calendar.removeFromParent();

Platform Availability

• iOS, Android , Windows, SPA, and Desktop Web

This method is used to set an imageClassifier object to the MLCamera widget. This object helps the MLCamera widget to recognize and classify the real-world objects.

For more information on Image Classifier and its related APIs, click here.

Syntax

setImageClassifier(imageClassifier)

Parameters

imageClassifier [JSObject]-Mandatory

This object must be created using the voltmx.ml.imageClassifier API.

Return Values

None

Example

/*Sample code to invoke setImageClassifier Method using myMLCamera MLCamera widget in frmMLCamera Form and imageClassifier1 object.*/  
frmMLCamera.mlCamera.setImageClassifier(imageClassifier1);

Platform Availability

• iOS and Android

This method enables you to classify preview frames.

Syntax

startDetection()

Parameters

None

Return Values

None

Example

/*Sample code to invoke startDetection Method using myMLCamera MLCamera widget in frmMLCamera Form.*/

frmMLCamera.myMLCamera.startDetection();

Platform Availability

• iOS and Android

This method is used to stop the classification of the preview frames.

Syntax

stopDetection()

Parameters

None

Return Values

None

Example

/*Sample code to invoke stopDetection Method using myMLCamera MLCamera widget in frmMLCamera Form.*/

frmMLCamera.myMLCamera.stopDetection();

Platform Availability

• iOS and Android

Use this method to set the visibility of the widget.

Default : true

Syntax

setVisibility(visible)

Parameters

visible

[Boolean] - Mandatory

true -Indicates visibility is true.

false - Indicates visibility is false.

animationConfig

[JSObject] - Optional. The parameter specifies the animation configuration of the object. This is not supported in SPA and Desktop Web platforms.

Following are the parameters of the JSObject:

animEffect

Optional. The parameter specifies the animation effect. Following are the available options of animation effect:

• constants.ANIMATION_EFFECT_EXPAND: This is applicable when the visibility is turned on. Specifies the widget must expand gradually by increasing the height of the widget.
• constants.ANIMATION_EFFECT_COLLAPSE: This is applicable when the visibility is turned off. Specifies the widget must collapse gradually by decreasing the height of the widget.
• constants.ANIMATION_EFFECT_REVEAL: This is applicable when the visibility is turned on. Specifies the widget must appear gradually by decreasing the transparency of the widget.
• constants.ANIMATION_EFFECT_FADE: This is applicable when the visibility is turned off. Specifies the widget must disappear gradually by increasing the transparency of the widget.
• constants.ANIMATION_EFFECT_NONE: This is the default option. Specifies animation should not be applied to the widget. However the layout animations are applied on the Form.

animDuration

Optional. The parameter specifies the duration of the animation effect in seconds. The default value is 1 second. The negative values are ignored and defaulted to 1 second.

animDelay

Optional. This parameter specifies the delay of the animation effect in seconds. The default value is 0 second. The negative values are ignored and defaulted to 0 second.

animCurve

Optional. The parameter specifies the animation curve to be applied while playing the animation. An animation curve defines the speed of the animations at different intervals of the animation duration. Following are the available options of animation curve:

• constants.ANIMATION_CURVE_EASEIN: Specifies the animation effect to start slow in the beginning.
• constants.ANIMATION_CURVE_EASEOUT: Specifies the animation effect to slowdown towards the end.
• constants.ANIMATION_CURVE_EASEINOUT: Specifies the animation effect to start slow and slowdown towards the end.
• constants.ANIMATION_CURVE_LINEAR: This is the default value. Specifies the animation effect to continue with the same speed from start to end.

animCallBacks - Optional

It is a JS dictionary containing the events invoked by the platform during the animation life cycle. Following are the available events:

• animStarted: Invoked at the beginning of the animation without any parameters. Following is the Syntax of the event: function animStarted()
• animEnded: Invoked at the end of the animation without any parameters. Following is the Syntax of the event: function animEnded()

Return Values

None

Exceptions

Error

Remarks

This method is not applicable on Form, Popup, and Alert. It is also not applicable if the widget is placed in a Segment. When the widget is placed in a Segment, the default Visibility is set to true. If you want to change the value to false, you can do so by using Segment methods.

Passing an invalid type other than the above events lead to run time exceptions/ crashes.

This method is not supported on the widgets FlexForm, FlexContainer, and FlexScrollContainer.

Example

//This is a generic method that is applicable for various widgets.
//Here, we have shown how to invoke the setVisibility Method for a button widget with animation.
//You need to make a corresponding call of the setVisibility method for other applicable widgets.

form1.myButton.setVisibility(
    false, {
        "animEffect": constants.ANIMATION_EFFECT_COLLAPSE,
        "animDuration": 1,
        "animDelay": 0,
        "animCurve": constants.ANIMATION_CURVE_LINEAR,
        "animCallBacks": {
            "animStarted": startCallBackFunc,
            "animEnded": endCallBackFunc
        }
    });
//Sample code to invoke setVisibility Method for button widget without animation.
form1.myButton.setVisibility(false);

Platform Availability

Available on all platforms.