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package com.svenjacobs.reveal
import androidx.compose.ui.unit.IntRect
import androidx.compose.ui.unit.IntSize
import androidx.compose.ui.unit.LayoutDirection
public object RevealOverlayArrangement {
public data object Start : Horizontal {
override fun arrange(
revealable: IntRect,
space: IntSize,
confineHeight: Boolean,
layoutDirection: LayoutDirection,
): IntRect = IntRect(
left = if (layoutDirection == LayoutDirection.Ltr) 0 else revealable.right,
top = if (confineHeight) revealable.top else 0,
right = if (layoutDirection == LayoutDirection.Ltr) revealable.left else space.width,
bottom = if (confineHeight) revealable.bottom else space.height,
)
override fun align(size: Int, layout: Int, space: Int): Int = layout - size
}
public data object End : Horizontal {
override fun arrange(
revealable: IntRect,
space: IntSize,
confineHeight: Boolean,
layoutDirection: LayoutDirection,
): IntRect = IntRect(
left = if (layoutDirection == LayoutDirection.Ltr) revealable.right else 0,
top = if (confineHeight) revealable.top else 0,
right = if (layoutDirection == LayoutDirection.Ltr) space.width else revealable.left,
bottom = if (confineHeight) revealable.bottom else space.height,
)
override fun align(size: Int, layout: Int, space: Int): Int = space - layout
}
public data object Top : Vertical {
override fun arrange(revealable: IntRect, space: IntSize, confineWidth: Boolean): IntRect =
IntRect(
left = if (confineWidth) revealable.left else 0,
top = 0,
right = if (confineWidth) revealable.right else space.width,
bottom = revealable.top,
)
override fun align(size: Int, layout: Int, space: Int): Int = layout - size
}
public data object Bottom : Vertical {
override fun arrange(revealable: IntRect, space: IntSize, confineWidth: Boolean): IntRect =
IntRect(
left = if (confineWidth) revealable.left else 0,
top = revealable.bottom,
right = if (confineWidth) revealable.right else space.width,
bottom = space.height,
)
override fun align(size: Int, layout: Int, space: Int): Int = space - layout
}
public sealed interface Horizontal {
/**
* Returns an [IntRect] which represents the position and size of the overlay layout area
* for a [revealable] within available [space].
*/
public fun arrange(
revealable: IntRect,
space: IntSize,
confineHeight: Boolean,
layoutDirection: LayoutDirection,
): IntRect
/**
* Returns the X offset to place the overlay content with width [size] in available [layout]
* width and total [space] width.
*/
public fun align(size: Int, layout: Int, space: Int): Int
}
public sealed interface Vertical {
/**
* Returns an [IntRect] which represents the position and size of the overlay layout area
* for a [revealable] within available [space].
*/
public fun arrange(revealable: IntRect, space: IntSize, confineWidth: Boolean): IntRect
/**
* Returns an Y offset to place the overlay content with height [size] in available [layout]
* height and total [space] height.
*/
public fun align(size: Int, layout: Int, space: Int): Int
}
}
