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btex: img tag with src attrib

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This commit is contained in:
minjaesong
2024-05-16 17:07:36 +09:00
parent e308e9a356
commit efbdc806ea
6 changed files with 142 additions and 29 deletions
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6
src/net/torvald/btex/BTeXDocument.kt
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@@ -63,6 +63,8 @@ class BTeXDocument : Disposable {
private fun String.escape() = this.replace("\"", "\\\"")
private fun newTempFile(name: String) = FileHandle.tempFile(name)
fun fromFile(fileHandle: FileHandle) = fromFile(fileHandle.file())
fun fromFile(file: File): BTeXDocument {
@@ -97,7 +99,7 @@ class BTeXDocument : Disposable {
Clustfile(DOM, "/${page}.png").also {
if (!it.exists()) throw IllegalStateException("No file '${page}.png' on the archive")
val tempFile = Gdx.files.external("./.btex-import.png") // must create new file descriptor for every page, or else every page will share a single file descriptor which cause problems
val tempFile = newTempFile("btex-import.png") // must create new file descriptor for every page, or else every page will share a single file descriptor which cause problems
it.exportFileTo(tempFile.file())
val texture = TextureRegion(Texture(tempFile))
doc.pageTextures[page] = texture
@@ -236,7 +238,7 @@ class BTeXDocument : Disposable {
pagePixmaps.forEachIndexed { index, pixmap ->
Clustfile(DOM, "$index.png").also { file ->
file.createNewFile()
val tempFile = Gdx.files.external("./.btex-export.png")
val tempFile = newTempFile("btex-export.png")
PixmapIO.writePNG(tempFile, pixmap, Deflater.BEST_COMPRESSION, false)
val outstream = ClustfileOutputStream(file)
outstream.write(tempFile.readBytes())

79
src/net/torvald/btex/BTeXParser.kt
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@@ -1,10 +1,13 @@
package net.torvald.btex
import com.badlogic.gdx.Gdx
import com.badlogic.gdx.files.FileHandle
import com.badlogic.gdx.graphics.Color
import com.badlogic.gdx.graphics.Pixmap
import com.badlogic.gdx.graphics.Texture
import com.badlogic.gdx.graphics.g2d.SpriteBatch
import com.badlogic.gdx.utils.Disposable
import com.badlogic.gdx.utils.GdxRuntimeException
import com.jme3.math.FastMath.DEG_TO_RAD
import net.torvald.colourutil.OKLch
import net.torvald.colourutil.tosRGB
@@ -27,15 +30,15 @@ import org.xml.sax.Attributes
import org.xml.sax.InputSource
import org.xml.sax.SAXParseException
import org.xml.sax.helpers.DefaultHandler
import java.io.File
import java.io.FileInputStream
import java.io.StringReader
import java.io.*
import java.net.URL
import javax.xml.parsers.SAXParserFactory
import kotlin.math.roundToInt
import kotlin.reflect.KFunction
import kotlin.reflect.full.declaredFunctions
import kotlin.reflect.full.findAnnotation
/**
* Created by minjaesong on 2023-10-28.
*/
@@ -919,6 +922,74 @@ object BTeXParser {
paragraphBuffer.append(value)
}
@OpenTag // reflective access is impossible with 'private'
fun processElemIMG(handler: BTeXHandler, doc: BTeXDocument, uri: String, attribs: HashMap<String, String>) {
val heightInLines = attribs["height"]!!.toInt()
val imgHeight = doc.lineHeightInPx * heightInLines - 6
val btexObjName = "IMG@${makeRandomObjName()}"
val img = attribs["src"]
// image overflowing?
if (doc.pageLines - doc.linesPrintedOnPage.last() < heightInLines)
doc.addNewPage()
if (img != null) {
val tempFile = FileHandle.tempFile("btex_$btexObjName")
try {
val inputPixmap = if (img.startsWith("file://")) {
// printdbg("Using local file ${img.substring(7)}")
Pixmap(Gdx.files.absolute(img.substring(7)))
}
else {
// printdbg("Downloading image $img")
BufferedInputStream(URL(img).openStream()).use { `in` ->
FileOutputStream(tempFile.file()).use { fileOutputStream ->
val dataBuffer = ByteArray(1024)
var bytesRead: Int
while ((`in`.read(dataBuffer, 0, 1024).also { bytesRead = it }) != -1) {
fileOutputStream.write(dataBuffer, 0, bytesRead)
}
}
}
Pixmap(tempFile).also { App.disposables.add(it) }
}
val imgWidth = (imgHeight.toFloat() / inputPixmap.height * inputPixmap.width).roundToInt()
if (imgWidth > doc.textWidth)
throw RuntimeException("Image width ($imgWidth) is larger than the text width (${doc.textWidth})")
val drawCallObj = { parentText: BTeXDrawCall -> object : BTeXBatchDrawCall(imgWidth, (heightInLines - 1).coerceAtLeast(0), parentText) {
private lateinit var inputTexture: Texture
override fun draw(doc: BTeXDocument, batch: SpriteBatch, x: Float, y: Float, font: TerrarumSansBitmap?) {
if (!::inputTexture.isInitialized) {
inputTexture = Texture(inputPixmap).also { App.disposables.add(it) }
}
val destX = (x + (doc.pageDimensionWidth - imgWidth) / 2)
val destY = y + 1
batch.draw(inputTexture, destX, destY, imgWidth.toFloat(), imgHeight.toFloat())
}
override fun drawToPixmap(doc: BTeXDocument, pixmap: Pixmap, x: Int, y: Int, font: TerrarumSansBitmap?) {
val destX = x
val destY = y + 1
pixmap.drawPixmap(inputPixmap, 0, 0, inputPixmap.width, inputPixmap.height, destX, destY, imgWidth, imgHeight)
}
} }
objDict[btexObjName] = { text: BTeXDrawCall -> drawCallObj(text) }
objWidthDict[btexObjName] = imgWidth
typesetParagraphs(objectMarkerWithWidth(btexObjName, imgWidth), handler, align = "center")
}
catch (e: IOException) { }
catch (e: GdxRuntimeException) { }
finally {
tempFile.delete()
}
}
}
@@ -1827,6 +1898,8 @@ object BTeXParser {
else -> throw IllegalArgumentException("Non-object ID char: $c")
}
}
private fun makeRandomObjName() = (0 until 12).joinToString("") { "${hashStrMap.random()}" }
}
}

4
src/net/torvald/terrarum/tests/BTeXTest.kt
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@@ -26,9 +26,9 @@ import kotlin.system.measureTimeMillis
*/
class BTeXTest : ApplicationAdapter() {
val filePath = "btex.xml"
// val filePath = "btex.xml"
// val filePath = "btex_ko.xml"
// val filePath = "test.xml"
val filePath = "test.xml"
// val filePath = "literature/en/daniel_defoe_robinson_crusoe.xml"
// val filePath = "literature/ruRU/anton_chekhov_palata_no_6.xml"
// val filePath = "literature/koKR/yisang_nalgae.btxbook"