From 14c9863a837157a807789f717e32e4a8728a7595 Mon Sep 17 00:00:00 2001
From: sergeych <real.sergeych@gmail.com>
Date: Sun, 17 May 2026 02:48:53 +0300
Subject: [PATCH] hyphenate text fix for desktop

---
 .../net/sergeych/toread/ReaderContent.kt      | 62 ++++++++++++++++++-
 gradle/libs.versions.toml                     |  4 +-
 2 files changed, 62 insertions(+), 4 deletions(-)

diff --git a/composeApp/src/commonMain/kotlin/net/sergeych/toread/ReaderContent.kt b/composeApp/src/commonMain/kotlin/net/sergeych/toread/ReaderContent.kt
index c2f0d2e..38cfb1c 100644
--- a/composeApp/src/commonMain/kotlin/net/sergeych/toread/ReaderContent.kt
+++ b/composeApp/src/commonMain/kotlin/net/sergeych/toread/ReaderContent.kt
@@ -26,15 +26,22 @@ import androidx.compose.material3.Card
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
+import androidx.compose.ui.draw.drawWithContent
+import androidx.compose.ui.geometry.Offset
 import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.StrokeCap
 import androidx.compose.ui.layout.ContentScale
 import androidx.compose.ui.text.AnnotatedString
 import androidx.compose.ui.text.SpanStyle
 import androidx.compose.ui.text.TextStyle
+import androidx.compose.ui.text.TextLayoutResult
 import androidx.compose.ui.text.buildAnnotatedString
 import androidx.compose.ui.text.font.FontFamily
 import androidx.compose.ui.text.font.FontStyle
@@ -48,6 +55,7 @@ import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.text.style.TextDecoration
 import androidx.compose.ui.text.withStyle
 import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.isSpecified
 import androidx.compose.ui.unit.sp
 import net.sergeych.toread.fb2.Fb2Block
 import net.sergeych.toread.fb2.Fb2Book
@@ -57,6 +65,9 @@ import net.sergeych.toread.fb2.Fb2Text
 import net.sergeych.toread.fb2.Fb2TextSpan
 import net.sergeych.toread.fb2.Fb2TextStyle
 import net.sergeych.toread.text.HyphenationRegistry
+import net.sergeych.toread.text.SoftHyphen
+import kotlin.math.max
+import kotlin.math.min
 
 @Composable
 internal fun ContinuousBookReader(
@@ -343,11 +354,50 @@ private fun ReaderText(
     textAlign: TextAlign,
     modifier: Modifier = Modifier,
 ) {
+    val annotatedText = text.toAnnotatedString(language, hyphenation)
+    val needsSoftHyphenPaintWorkaround = isDesktopPlatform()
+    var textLayout by remember(annotatedText) { mutableStateOf<TextLayoutResult?>(null) }
+    val desktopHyphenColor = MaterialTheme.colorScheme.onSurface
+    val desktopHyphenGutter = 8.dp
+    val textModifier = modifier
+        .fillMaxWidth()
+        .then(
+            if (needsSoftHyphenPaintWorkaround) {
+                Modifier.drawWithContent {
+                    drawContent()
+
+                    val layout = textLayout ?: return@drawWithContent
+                    val layoutText = layout.layoutInput.text.text
+                    val fontSizePx = if (style.fontSize.isSpecified) style.fontSize.toPx() else 18.sp.toPx()
+                    val hyphenLength = fontSizePx * 0.36f
+                    val strokeWidth = max(1f, fontSizePx * 0.055f)
+
+                    for (line in 0 until layout.lineCount) {
+                        if (!layout.endsAtSoftHyphen(layoutText, line)) continue
+
+                        val lineRight = layout.getLineRight(line)
+                        val x = min(lineRight + hyphenLength * 0.12f, size.width - hyphenLength)
+                        val y = layout.getLineBaseline(line) - fontSizePx * 0.32f
+                        drawLine(
+                            color = desktopHyphenColor,
+                            start = Offset(x, y),
+                            end = Offset(x + hyphenLength, y),
+                            strokeWidth = strokeWidth,
+                            cap = StrokeCap.Square,
+                        )
+                    }
+                }.padding(end = desktopHyphenGutter)
+            } else {
+                Modifier
+            },
+        )
+
     Text(
-        text = text.toAnnotatedString(language, hyphenation),
+        text = annotatedText,
         style = style,
         textAlign = textAlign,
-        modifier = modifier.fillMaxWidth(),
+        modifier = textModifier,
+        onTextLayout = { textLayout = it },
     )
 }
 
@@ -364,6 +414,14 @@ private fun readerParagraphTextStyle(language: String?): TextStyle =
 private fun isAndroidPlatform(): Boolean =
     getPlatform().name.startsWith("Android")
 
+private fun isDesktopPlatform(): Boolean =
+    getPlatform().name.startsWith("Java")
+
+private fun TextLayoutResult.endsAtSoftHyphen(text: String, line: Int): Boolean {
+    val end = getLineEnd(line, visibleEnd = false)
+    return text.getOrNull(end - 1) == SoftHyphen || text.getOrNull(end) == SoftHyphen
+}
+
 @Composable
 private fun BookImage(
     book: Fb2Book,
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 8d9a9ea..7bc16c5 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -11,13 +11,13 @@ androidx-lifecycle = "2.10.0"
 androidx-testExt = "1.3.0"
 composeHotReload = "1.1.0"
 composeMaterialIcons = "1.7.3"
-composeMultiplatform = "1.10.3"
+composeMultiplatform = "1.11.0"
 junit = "4.13.2"
 kotlin = "2.3.21"
 kotlinx-coroutines = "1.10.2"
 ktor = "3.4.3"
 logback = "1.5.32"
-material3 = "1.10.0-alpha05"
+material3 = "1.11.0-alpha07"
 h2 = "2.4.240"
 
 [libraries]