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package com.svenjacobs.reveal
import androidx.compose.foundation.layout.PaddingValues
import androidx.compose.runtime.DisposableEffect
import androidx.compose.ui.Modifier
import androidx.compose.ui.composed
import androidx.compose.ui.layout.onGloballyPositioned
import androidx.compose.ui.layout.positionInRoot
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.toSize
/**
* Registers the element as a revealable item.
*
* [key] must be unique in the current scope and should be used for [RevealState.reveal].
* Internally [Modifier.onGloballyPositioned] is used. Hence elements are only registered after
* they have been laid out.
*
* If the element that this modifier is applied to leaves the composition while the reveal
* effect is shown for the element, the effect is finished.
*
* @param key Unique key to identify the revealable content. Also see documentation of [Key].
* @param state Item is associated with this [RevealState]
* @param shape Shape of the reveal effect around the element. Defaults to a rounded rect
* with a corner size of 4 dp.
* @param padding Additional padding around the reveal area. Positive values increase area while
* negative values decrease it. Defaults to 8 dp on all sides.
* @param onClick Called when item is clicked while revealed. `key` is the key of this, the clicked
* element. If click listener is defined here, clicks for this element will not be
* handled by `onRevealableClick` of `Reveal`
*
* @see Key
*/
public fun Modifier.revealable(
key: Key,
state: RevealState,
shape: RevealShape = RevealShape.RoundRect(4.dp),
padding: PaddingValues = PaddingValues(8.dp),
onClick: OnClickListener? = null,
): Modifier = this.then(
Modifier.revealable(
state = state,
keys = listOf(key),
shape = shape,
padding = padding,
onClick = onClick,
),
)
/**
* Registers the element as a revealable item.
*
* Each key in [keys] must be unique in the current scope and should be used for
* [RevealState.reveal]. Internally [Modifier.onGloballyPositioned] is used. Hence elements are
* only registered after they have been laid out.
*
* If the element that this modifier is applied to leaves the composition while the reveal
* effect is shown for the element, the effect is finished.
*
* @param keys Unique keys to identify the revealable content. Also see documentation of [Key].
* @param state Item is associated with this [RevealState]
* @param shape Shape of the reveal effect around the element. Defaults to a rounded rect
* with a corner size of 4 dp.
* @param padding Additional padding around the reveal area. Positive values increase area while
* negative values decrease it. Defaults to 8 dp on all sides.
* @param onClick Called when item is clicked while revealed. `key` is the key of this, the clicked
* element. If click listener is defined here, clicks for this element will not be
* handled by `onRevealableClick` of `Reveal`
*
* @see Key
*/
public fun Modifier.revealable(
vararg keys: Key,
state: RevealState,
shape: RevealShape = RevealShape.RoundRect(4.dp),
padding: PaddingValues = PaddingValues(8.dp),
onClick: OnClickListener? = null,
): Modifier = this.then(
Modifier.revealable(
state = state,
keys = keys.toList(),
shape = shape,
padding = padding,
onClick = onClick,
),
)
/**
* Registers the element as a revealable item.
*
* Each key specified in [keys] must be unique in the current scope and should be used for
* [RevealState.reveal]. Internally [Modifier.onGloballyPositioned] is used. Hence elements are
* only registered after they have been laid out.
*
* If the element that this modifier is applied to leaves the composition while the reveal
* effect is shown for the element, the effect is finished.
*
* @param keys Unique keys to identify the revealable content. Also see documentation of [Key].
* @param state Item is associated with this [RevealState]
* @param shape Shape of the reveal effect around the element. Defaults to a rounded rect
* with a corner size of 4 dp.
* @param padding Additional padding around the reveal area. Positive values increase area while
* negative values decrease it. Defaults to 8 dp on all sides.
* @param onClick Called when item is clicked while revealed. `key` is the key of this, the clicked
* element. If click listener is defined here, clicks for this element will not be
* handled by `onRevealableClick` of `Reveal`
*
* @see Key
*/
public fun Modifier.revealable(
keys: Iterable,
state: RevealState,
shape: RevealShape = RevealShape.RoundRect(4.dp),
padding: PaddingValues = PaddingValues(8.dp),
onClick: OnClickListener? = null,
): Modifier = this.then(
Modifier
.onGloballyPositioned { layoutCoordinates ->
for (key in keys) {
state.putRevealable(
Revealable(
key = key,
shape = shape,
padding = padding,
layout = Revealable.Layout(
offset = layoutCoordinates.positionInRoot(),
size = layoutCoordinates.size.toSize(),
),
onClick = onClick,
),
)
}
}
.composed {
DisposableEffect(Unit) {
onDispose {
for (key in keys) {
state.removeRevealable(key)
}
}
}
this
},
)
