curioustorvald/Terrarum-sans-bitmap
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two more paragraph alignment: raggedleft and centred

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minjaesong
2024-05-09 16:47:42 +09:00
parent e2d6d3724c
commit d31b5e4068
1 changed files with 63 additions and 22 deletions
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85
src/net/torvald/terrarumsansbitmap/MovableType.kt
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@@ -12,7 +12,7 @@ import kotlin.math.*
import kotlin.properties.Delegates
enum class TypesettingStrategy {
JUSTIFIED, RAGGED_RIGHT
JUSTIFIED, RAGGED_RIGHT, RAGGED_LEFT, CENTRED
}
/**
@@ -92,9 +92,46 @@ class MovableType(
width = maxOf(width, nextPosX + box.width)
}
fun dispatchSlug() {
// typesettedSlugs.add(slug)
typesettedSlugs.add(slug.freezeIntoCodepointSequence(font))
fun dispatchSlug(align: TypesettingStrategy) {
val frozen = slug.freezeIntoCodepointSequence(font)
// insert empty blocks to the left
if (align == TypesettingStrategy.RAGGED_LEFT) {
// has hangables?
val penult = frozen.penultimateOrNull()
val hang = if (penult == null)
0
else if (hangable.contains(penult))
hangWidth
else if (hangableFW.contains(penult))
hangWidthFW
else
0
val diff = paperWidth - (font.getWidthNormalised(frozen) - hang)
if (diff != 0) {
frozen.addAll(0, diff.glueSizeToGlueChars())
}
}
else if (align == TypesettingStrategy.CENTRED) {
// has hangables?
val penult = frozen.penultimateOrNull()
val hang = if (penult == null)
0
else if (hangable.contains(penult))
hangWidth / 2
else if (hangableFW.contains(penult))
hangWidthFW / 2
else
0
val diff = (paperWidth - (font.getWidthNormalised(frozen)) - hang) / 2
if (diff != 0) {
frozen.addAll(0, diff.glueSizeToGlueChars())
}
}
typesettedSlugs.add(frozen)
slug = ArrayList()
slugWidth = 0
@@ -180,21 +217,25 @@ class MovableType(
if (box.isNotGlue()) {
// deal with the hangables
val slugWidthForOverflowCalc = when (strategy) {
TypesettingStrategy.JUSTIFIED -> if (box.penultimateCharOrNull == null)
slugWidth
else if (hangable.contains(box.penultimateCharOrNull))
slugWidth - hangWidth
else if (hangableFW.contains(box.penultimateCharOrNull))
slugWidth - hangWidthFW
else
slugWidth
TypesettingStrategy.JUSTIFIED -> {
val penult = box.penultimateCharOrNull
TypesettingStrategy.RAGGED_RIGHT -> slugWidth
if (penult == null)
slugWidth
else if (hangable.contains(penult))
slugWidth - hangWidth
else if (hangableFW.contains(penult))
slugWidth - hangWidthFW
else
slugWidth
}
TypesettingStrategy.RAGGED_RIGHT, TypesettingStrategy.RAGGED_LEFT, TypesettingStrategy.CENTRED -> slugWidth
}
val truePaperWidth = when (strategy) {
TypesettingStrategy.JUSTIFIED -> paperWidth
TypesettingStrategy.RAGGED_RIGHT -> paperWidth + 2
TypesettingStrategy.RAGGED_RIGHT, TypesettingStrategy.RAGGED_LEFT, TypesettingStrategy.CENTRED -> paperWidth + 2
}
// if adding the box would cause overflow
@@ -324,10 +365,10 @@ class MovableType(
}
// println(" > Line ${typesettedSlugs.size + 1} Final Slug: [ ${slug.map { it.block.text.toReadable() }.joinToString(" | ")} ]")
dispatchSlug()
dispatchSlug(strategy)
}
// if adding the box would cause overflow (ragged right)
else if (strategy == TypesettingStrategy.RAGGED_RIGHT) {
// if adding the box would cause overflow (ragged-something, centred)
else {
// remove trailing glues
while (slug.lastOrNull()?.block?.isGlue() == true) {
slug.removeLast()
@@ -335,10 +376,7 @@ class MovableType(
addHyphenatedTail(box)
dispatchSlug()
}
else {
throw UnsupportedOperationException("Unknown typesetting strategy: ${strategy.name}")
dispatchSlug(strategy)
}
}
// typeset the boxes normally
@@ -353,7 +391,7 @@ class MovableType(
if (!ignoreThisLine) {
// println(" > Line ${typesettedSlugs.size + 1} Final Slug: [ ${slug.map { it.block.text.toReadable() }.joinToString(" | ")} ]")
dispatchSlug()
dispatchSlug(strategy)
}
} // end of lines.forEach
@@ -736,6 +774,9 @@ class MovableType(
private fun <E> java.util.ArrayList<E>.penultimate(): E {
return this[this.size - 2]
}
private fun <E> java.util.ArrayList<E>.penultimateOrNull(): E? {
return this.getOrNull(this.size - 2)
}
private fun penaliseWidening(score: Int, availableGlues: Double): Double =
100.0 * (score / availableGlues).pow(3.0)