Morphing Text

It is a collection of text animations inspired by LTMorphingLabel.

Animations

ScaleMorphingText

ScaleMorphingText(
    texts: text,
    loopForever: true,
    onComplete: () {},
    textStyle: TextStyle(fontSize: 40.0),
),

EvaporateMorphingText

EvaporateMorphingText(
    texts: text,
    loopForever: true,
    onComplete: () {},
    yDisplacement: 1.2,     // To factor of y-displacement
    textStyle: TextStyle(fontSize: 40.0),
),

All Parameters

Type	Parameter	Description	Default
List<String>	texts	List of String which will show the text	-
TextStyle	textStyle	Styling of texts	DefaultTextStyle
Duration	speed	Define the speed of changing of each text	500 milliseconds
Duration	pause	Define the pause between each transition	1500 milliseconds
bool	loopForever	When true animations will repeat indefinitely	false
int	loopCount	Number of time animation will repeat itself	1
void	onComplete	When loopCount is completed it is called	-
Curve	fadeInCurve	Curve which controls opacity from 0 to 1	Curves.easeInExpo
Curve	fadeOutCurve	Curve which controls opacity from 1 to 0	Curves.easeOut
Curve	progressCurve	Curve which controls movement of text and scale changes	Curves.easeIn

Changing Curves is purely experimental, select proper curves as per your need or leave them at default

Making custom animations

1. To make custom animations extend your class with MorphingText

class CustomFooMorphingText extends MorphingText {
  ...
}

2. Override incomingText and outgoingText methods to animate entry of next and exit of previous text respectively and pass text, textStyle and progress to super.

class CustomFooMorphingText extends MorphingText {
  CustomFooMorphingText(
      String text,
      TextStyle textStyle,
      double progress,
  ) : super(text, textStyle, progress);

  @override
  TextProperties morphingText(TextProperties textProperties) {
    // Optional to change the motion of moving text
  }

  @override
  TextProperties incomingText(TextProperties textProperties) {
    // Write you logic for next text
  }

  @override
  TextProperties outgoingText(TextProperties textProperties) {
    // Write you logic for leaving text
  }
}

3. Pass your custom animation to CustomMorphingText in build method.

CustomMorphingText(
  morphingText: CustomFooMorphingText(
    texts[index],
    DefaultTextStyle.of(context).style.merge(widget.textStyle),
    _progress.value,
  ),
);

4. For example you can see implementation of CustomScaleMorphingText on github

Want to Contribute?

A help is always welcomed, check our CONTRIBUTING.md