Loading of rasterisation settings from IntelliJ UI settings

JetBrains · Jul 4, 2024 · a5d4562 · a5d4562
1 parent 135f009
commit a5d4562
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Showing 2 changed files with 35 additions and 1 deletion.
diff --git a/ide-laf-bridge/src/main/kotlin/org/jetbrains/jewel/bridge/Bridge.kt b/ide-laf-bridge/src/main/kotlin/org/jetbrains/jewel/bridge/Bridge.kt
@@ -1,6 +1,7 @@
 package org.jetbrains.jewel.bridge
 
 import com.intellij.ide.ui.LafManagerListener
+import com.intellij.ide.ui.UISettingsListener
 import com.intellij.openapi.application.Application
 import com.intellij.openapi.application.ApplicationManager
 import com.intellij.util.messages.MessageBus
@@ -12,6 +13,7 @@ import kotlinx.coroutines.channels.awaitClose
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.SharingStarted
 import kotlinx.coroutines.flow.callbackFlow
+import kotlinx.coroutines.flow.merge
 import kotlinx.coroutines.flow.onStart
 import kotlinx.coroutines.flow.shareIn
 
@@ -21,11 +23,16 @@ internal val IntelliJApplication: Application
 private fun Application.lookAndFeelFlow(scope: CoroutineScope): Flow<Unit> =
     messageBus.flow(LafManagerListener.TOPIC, scope) { LafManagerListener { trySend(Unit) } }
 
+private fun Application.uiSettingsFlow(scope: CoroutineScope): Flow<Unit> =
+    messageBus.flow(UISettingsListener.TOPIC, scope) {
+        UISettingsListener { trySend(Unit) }
+    }
+
 internal fun Application.lookAndFeelChangedFlow(
     scope: CoroutineScope,
     sharingStarted: SharingStarted = SharingStarted.Eagerly,
 ): Flow<Unit> =
-    lookAndFeelFlow(scope).onStart { emit(Unit) }
+    merge(lookAndFeelFlow(scope), uiSettingsFlow(scope)).onStart { emit(Unit) }
         .shareIn(scope, sharingStarted, replay = 1)
 
 internal fun <L : Any, K> MessageBus.flow(

diff --git a/ide-laf-bridge/src/main/kotlin/org/jetbrains/jewel/bridge/BridgeUtils.kt b/ide-laf-bridge/src/main/kotlin/org/jetbrains/jewel/bridge/BridgeUtils.kt
@@ -7,6 +7,10 @@ import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.SolidColor
 import androidx.compose.ui.graphics.TileMode
 import androidx.compose.ui.text.ExperimentalTextApi
+import androidx.compose.ui.text.FontRasterizationSettings
+import androidx.compose.ui.text.FontSmoothing
+import androidx.compose.ui.text.PlatformParagraphStyle
+import androidx.compose.ui.text.PlatformTextStyle
 import androidx.compose.ui.text.TextStyle
 import androidx.compose.ui.text.font.FontStyle
 import androidx.compose.ui.text.font.FontWeight
@@ -19,7 +23,9 @@ import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.isUnspecified
 import androidx.compose.ui.unit.sp
 import androidx.compose.ui.unit.takeOrElse
+import com.intellij.ide.ui.AntialiasingType
 import com.intellij.ide.ui.LafManager
+import com.intellij.ide.ui.UISettings
 import com.intellij.ide.ui.UISettingsUtils
 import com.intellij.openapi.diagnostic.Logger
 import com.intellij.openapi.editor.colors.EditorColorsManager
@@ -175,6 +181,9 @@ public fun retrieveTextStyle(
 ): TextStyle {
     val lafFont = UIManager.getFont(key) ?: keyNotFound(key, "Font")
     val jbFont = JBFont.create(lafFont, false)
+    val uiSettings = UISettings.instanceOrNull
+    val aa = uiSettings?.ideAAType ?: AntialiasingType.GREYSCALE
+    val platformDefaultFontRasterization = FontRasterizationSettings.PlatformDefault
 
     val derivedFont = jbFont.let { if (bold) it.asBold() else it.asPlain() }
         .let { if (fontStyle == FontStyle.Italic) it.asItalic() else it }
@@ -187,9 +196,27 @@ public fun retrieveTextStyle(
         fontFamily = derivedFont.asComposeFontFamily(),
         // TODO textDecoration might be defined in the AWT theme
         lineHeight = lineHeight,
+        platformStyle = PlatformTextStyle(
+            null,
+            paragraphStyle = PlatformParagraphStyle(
+                fontRasterizationSettings = FontRasterizationSettings(
+                    smoothing = aa.asComposeFontSmoothing(),
+                    hinting = platformDefaultFontRasterization.hinting,
+                    subpixelPositioning = platformDefaultFontRasterization.subpixelPositioning,
+                    platformDefaultFontRasterization.autoHintingForced
+                )
+            ),
+        )
     )
 }
 
+@OptIn(ExperimentalTextApi::class)
+private fun AntialiasingType.asComposeFontSmoothing(): FontSmoothing = when(this) {
+    AntialiasingType.GREYSCALE -> FontSmoothing.AntiAlias
+    AntialiasingType.SUBPIXEL -> FontSmoothing.SubpixelAntiAlias
+    AntialiasingType.OFF -> FontSmoothing.None
+}
+
 public val JBValue.dp: Dp
     get() = unscaled.dp