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Support adjust the speed of animation by scaling duration #178

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Support adjust the speed of animation by scaling duration #178

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2 changes: 2 additions & 0 deletions app/src/main/res/layout/activity_simple.xml
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Original file line number Diff line number Diff line change
Expand Up @@ -6,11 +6,13 @@
android:layout_height="match_parent"
android:background="#000000">

<!--slow down half,if set durationScaleRatio = 5,means to accelerate 5 times-->
<com.opensource.svgaplayer.SVGAImageView
android:layout_height="match_parent"
android:layout_width="match_parent"
android:scaleType="fitCenter"
app:source="angel.svga"
app:durationScaleRatio="0.5"
app:antiAlias="true"/>

</RelativeLayout>
10 changes: 10 additions & 0 deletions library/src/main/java/com/opensource/svgaplayer/SVGAImageView.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,9 @@ open class SVGAImageView : ImageView {

var fillMode: FillMode = FillMode.Forward

// =0 means default speed，>1 speed up，<1 Slow down
var durationScaleRatio: Float = 0f

var callback: SVGACallback? = null

private var animator: ValueAnimator? = null
Expand Down Expand Up @@ -73,6 +76,7 @@ open class SVGAImageView : ImageView {
private fun loadAttrs(attrs: AttributeSet) {
val typedArray = context.theme.obtainStyledAttributes(attrs, R.styleable.SVGAImageView, 0, 0)
loops = typedArray.getInt(R.styleable.SVGAImageView_loopCount, 0)
durationScaleRatio = typedArray.getFloat(R.styleable.SVGAImageView_durationScaleRatio, 0f) //new attr to adjust speed of animation
clearsAfterStop = typedArray.getBoolean(R.styleable.SVGAImageView_clearsAfterStop, true)
val antiAlias = typedArray.getBoolean(R.styleable.SVGAImageView_antiAlias, true)
val autoPlay = typedArray.getBoolean(R.styleable.SVGAImageView_autoPlay, true)
Expand Down Expand Up @@ -143,6 +147,12 @@ open class SVGAImageView : ImageView {
} catch (e: Exception) {}
animator.interpolator = LinearInterpolator()
animator.duration = ((endFrame - startFrame + 1) * (1000 / it.FPS) / durationScale).toLong()

//Adjust the duration,and no need to modify the .svga file.
if (durationScaleRatio > 0) {
animator.duration = (animator.duration / durationScaleRatio).toLong()
}

animator.repeatCount = if (loops <= 0) 99999 else loops - 1
animator.addUpdateListener {
drawable.currentFrame = animator.animatedValue as Int
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1 change: 1 addition & 0 deletions library/src/main/res/values/attrs.xml
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@
<attr name="antiAlias" format="boolean" />
<attr name="loopCount" format="integer" />
<attr name="clearsAfterStop" format="boolean" />
<attr name="durationScaleRatio" format="float" />
<attr name="fillMode" format="enum">
<enum name="Backward" value="0" />
<enum name="Forward" value="1" />
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