blob: aad447e73ffb6fccc05a85abd0e49c5990c580d4 [file] [log] [blame]
* Copyright 2019 The Android Open Source Project
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* See the License for the specific language governing permissions and
* limitations under the License.
import androidx.compose.runtime.Immutable
import androidx.compose.runtime.Stable
import androidx.compose.ui.text.lerpTextUnitInheritable
import androidx.compose.ui.unit.TextUnit
import androidx.compose.ui.unit.sp
* Specify the indentation of a paragraph.
* @param firstLine the amount of indentation applied to the first line.
* @param restLine the amount of indentation applied to every line except the first line.
class TextIndent(
val firstLine: TextUnit = 0.sp,
val restLine: TextUnit = 0.sp
) {
companion object {
* Constant fot no text indent.
val None = TextIndent()
fun copy(
firstLine: TextUnit = this.firstLine,
restLine: TextUnit = this.restLine
): TextIndent {
return TextIndent(firstLine, restLine)
override operator fun equals(other: Any?): Boolean {
if (this === other) return true
if (other !is TextIndent) return false
if (firstLine != other.firstLine) return false
if (restLine != other.restLine) return false
return true
override fun hashCode(): Int {
var result = firstLine.hashCode()
result = 31 * result + restLine.hashCode()
return result
override fun toString(): String {
return "TextIndent(firstLine=$firstLine, restLine=$restLine)"
* Linearly interpolate between two [TextIndent]s.
* The [fraction] argument represents position on the timeline, with 0.0 meaning
* that the interpolation has not started, returning [start] (or something
* equivalent to [start]), 1.0 meaning that the interpolation has finished,
* returning [stop] (or something equivalent to [stop]), and values in between
* meaning that the interpolation is at the relevant point on the timeline
* between [start] and [stop]. The interpolation can be extrapolated beyond 0.0 and
* 1.0, so negative values and values greater than 1.0 are valid.
fun lerp(start: TextIndent, stop: TextIndent, fraction: Float): TextIndent {
return TextIndent(
lerpTextUnitInheritable(start.firstLine, stop.firstLine, fraction),
lerpTextUnitInheritable(start.restLine, stop.restLine, fraction)