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39 changes: 39 additions & 0 deletions
39
app/src/main/kotlin/nl/ndat/tvlauncher/ui/indication/scale.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,39 @@ | ||
| package nl.ndat.tvlauncher.ui.indication | ||
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|
||
| import androidx.compose.animation.core.animateFloatAsState | ||
| import androidx.compose.foundation.Indication | ||
| import androidx.compose.foundation.IndicationInstance | ||
| import androidx.compose.foundation.interaction.FocusInteraction | ||
| import androidx.compose.foundation.interaction.InteractionSource | ||
| import androidx.compose.runtime.Composable | ||
| import androidx.compose.runtime.collectAsState | ||
| import androidx.compose.runtime.getValue | ||
| import androidx.compose.runtime.remember | ||
| import androidx.compose.ui.graphics.drawscope.ContentDrawScope | ||
| import androidx.compose.ui.graphics.drawscope.scale | ||
|
|
||
| private class ScaleIndicationInstance( | ||
| private val scale: Float, | ||
| ) : IndicationInstance { | ||
| override fun ContentDrawScope.drawIndication() { | ||
| scale(scale) { | ||
| this@drawIndication.drawContent() | ||
| } | ||
| } | ||
| } | ||
|
|
||
| class FocusScaleIndication( | ||
| private val focusedScale: Float, | ||
| ) : Indication { | ||
| @Composable | ||
| override fun rememberUpdatedInstance(interactionSource: InteractionSource): IndicationInstance { | ||
| val interaction by interactionSource.interactions.collectAsState(initial = null) | ||
| val currentScale = when (interaction) { | ||
| is FocusInteraction.Focus -> focusedScale | ||
| else -> 1.0f | ||
| } | ||
|
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| val scale by animateFloatAsState(currentScale) | ||
| return remember(scale) { ScaleIndicationInstance(scale) } | ||
| } | ||
| } |