From c0567c70130911594b5e283af6c18c38dfa4dffb Mon Sep 17 00:00:00 2001
From: Bogdan Kirilenko <bogdan.kirilenko@jetbrains.com>
Date: Thu, 18 Jun 2026 11:08:47 +0200
Subject: [PATCH] [minimap] PY-90183 adding 1px border to the minimap if it's
 inside scrollbar too

fix border visibility for dark theme


(cherry picked from commit 9da2020dbf277a125f73d351c3c06231f298c3fa)

IJ-CR-210985

GitOrigin-RevId: 056dc520ba10ad5437d1607b33fc2aa3f9e26c29
---
 .../ide/minimap/hover/MinimapHoverPresenter.kt | 18 +++++++++++++++++-
 .../factories/EditorSeparatorLayerFactory.kt   |  6 +++---
 2 files changed, 20 insertions(+), 4 deletions(-)

diff --git a/platform/platform-impl/src/com/intellij/ide/minimap/hover/MinimapHoverPresenter.kt b/platform/platform-impl/src/com/intellij/ide/minimap/hover/MinimapHoverPresenter.kt
index 6b0d1e644c2b..dd4f41bb315e 100644
--- a/platform/platform-impl/src/com/intellij/ide/minimap/hover/MinimapHoverPresenter.kt
+++ b/platform/platform-impl/src/com/intellij/ide/minimap/hover/MinimapHoverPresenter.kt
@@ -7,8 +7,10 @@ import com.intellij.ide.minimap.geometry.MinimapLineGeometryUtil
 import com.intellij.ide.minimap.render.MinimapRenderContext
 import com.intellij.openapi.editor.colors.EditorColors
 import com.intellij.ui.JBColor
+import com.intellij.util.ui.JBUI
 import java.awt.Color
 import java.awt.Graphics2D
+import java.awt.Rectangle
 import kotlin.math.roundToInt
 
 class MinimapHoverPresenter(private val panel: MinimapPanel) {
@@ -40,7 +42,17 @@ class MinimapHoverPresenter(private val panel: MinimapPanel) {
     val context = lastContext ?: return
 
     val lineHeight = computeLineHeight(context)
-    hoverPainter.paint(graphics, target.rect, target.declarationWidth, lineHeight, hoverColor())
+    val leftInset = hoverFrameLeftInset()
+    if (leftInset == 0) {
+      hoverPainter.paint(graphics, target.rect, target.declarationWidth, lineHeight, hoverColor())
+    }
+    else {
+      val rect = Rectangle(target.rect)
+      rect.x += leftInset
+      rect.width = (rect.width - leftInset).coerceAtLeast(1)
+      val declarationWidth = (target.declarationWidth - leftInset).coerceAtLeast(1)
+      hoverPainter.paint(graphics, rect, declarationWidth, lineHeight, hoverColor())
+    }
   }
 
   fun hide() {
@@ -62,4 +74,8 @@ class MinimapHoverPresenter(private val panel: MinimapPanel) {
     return scheme.getAttributes(EditorColors.REFERENCE_HYPERLINK_COLOR)?.foregroundColor
            ?: JBColor.BLUE
   }
+
+  private fun hoverFrameLeftInset(): Int {
+    return if (panel.settings.state.rightAligned) JBUI.scale(1) else 0
+  }
 }
diff --git a/platform/platform-impl/src/com/intellij/ide/minimap/layers/factories/EditorSeparatorLayerFactory.kt b/platform/platform-impl/src/com/intellij/ide/minimap/layers/factories/EditorSeparatorLayerFactory.kt
index ec5d6712121a..ddcc1e9d0826 100644
--- a/platform/platform-impl/src/com/intellij/ide/minimap/layers/factories/EditorSeparatorLayerFactory.kt
+++ b/platform/platform-impl/src/com/intellij/ide/minimap/layers/factories/EditorSeparatorLayerFactory.kt
@@ -8,14 +8,14 @@ import com.intellij.ide.minimap.layers.MinimapLayerId
 import com.intellij.ide.minimap.layers.MinimapLayerIds
 import com.intellij.ide.minimap.layers.MinimapLayerRenderState
 import com.intellij.ide.minimap.settings.MinimapSettings
-import com.intellij.openapi.ui.OnePixelDivider
+import com.intellij.ui.JBColor
 import com.intellij.util.ui.JBUI
 import java.awt.Graphics2D
 
 internal class EditorSeparatorLayerFactory : MinimapLayerFactory {
   override val id: MinimapLayerId = MinimapLayerIds.EDITOR_SEPARATOR
   override val order: Int = 100
-  private val leftBorder = JBUI.Borders.customLineLeft(OnePixelDivider.BACKGROUND)
+  private val leftBorder = JBUI.Borders.customLineLeft(JBColor.namedColor("EditorPane.splitBorder", JBColor.border()))
 
   override fun createLayer(panel: MinimapPanel): MinimapLayer {
     return object : MinimapLayer {
@@ -24,7 +24,7 @@ internal class EditorSeparatorLayerFactory : MinimapLayerFactory {
 
       override fun isApplicable(state: MinimapLayerRenderState): Boolean {
         val minimapState = MinimapSettings.getInstance().state
-        return minimapState.rightAligned && minimapState.insideScrollbar
+        return minimapState.rightAligned
       }
 
       override fun paint(graphics: Graphics2D, state: MinimapLayerRenderState) {