For panel_background, panel_border, panel_grid_major/minor.

plot-base/src/commonMain/kotlin/org/jetbrains/letsPlot/core/plot/base/theme/PanelGridTheme.kt

@@ -6,6 +6,7 @@
 package org.jetbrains.letsPlot.core.plot.base.theme
 
 import org.jetbrains.letsPlot.commons.values.Color
+import org.jetbrains.letsPlot.core.plot.base.render.linetype.LineType
 
 interface PanelGridTheme {
  fun isOntop(): Boolean
@@ -21,4 +22,8 @@ interface PanelGridTheme {
  fun majorLineColor(): Color
 
  fun minorLineColor(): Color
+
+ fun majorLineType(): LineType
+
+ fun minorLineType(): LineType
 }

plot-base/src/commonMain/kotlin/org/jetbrains/letsPlot/core/plot/base/theme/PanelTheme.kt

@@ -7,6 +7,7 @@ package org.jetbrains.letsPlot.core.plot.base.theme
 
 import org.jetbrains.letsPlot.commons.values.Color
 import org.jetbrains.letsPlot.core.plot.base.layout.Thickness
+import org.jetbrains.letsPlot.core.plot.base.render.linetype.LineType
 
 /**
  * Plotting area, drawn underneath plot.
@@ -16,11 +17,13 @@ interface PanelTheme {
  fun rectColor(): Color
  fun rectFill(): Color
  fun rectStrokeWidth(): Double
+ fun rectLineType(): LineType
 
  fun showBorder(): Boolean
  fun borderColor(): Color
  fun borderWidth(): Double
  fun borderIsOntop(): Boolean
+ fun borderLineType(): LineType
 
  fun gridX(flipAxis: Boolean = false): PanelGridTheme
  fun gridY(flipAxis: Boolean = false): PanelGridTheme

plot-builder/src/commonMain/kotlin/org/jetbrains/letsPlot/core/plot/builder/defaultTheme/DefaultPanelGridTheme.kt

@@ -53,4 +53,8 @@ internal class DefaultPanelGridTheme(
  override fun minorLineColor(): Color {
  return getColor(getElemValue(minorLineKey), Elem.COLOR)
  }
+
+ override fun majorLineType() = getLineType(getElemValue(majorLineKey))
+
+ override fun minorLineType() = getLineType(getElemValue(minorLineKey))
 }

plot-builder/src/commonMain/kotlin/org/jetbrains/letsPlot/core/plot/builder/defaultTheme/DefaultPanelTheme.kt

@@ -45,6 +45,8 @@ internal class DefaultPanelTheme(
  return getNumber(getElemValue(rectKey), Elem.SIZE)
  }
 
+ override fun rectLineType() = getLineType(getElemValue(rectKey))
+
  override fun showBorder() = !isElemBlank(borderKey)
 
  override fun borderColor() = getColor(getElemValue(borderKey), Elem.COLOR)
@@ -53,6 +55,8 @@ internal class DefaultPanelTheme(
 
  override fun borderIsOntop(): Boolean = getBoolean(borderOntopKey)
 
+ override fun borderLineType() = getLineType(getElemValue(borderKey))
+
  override fun gridX(flipAxis: Boolean): PanelGridTheme = if (flipAxis) gridY else gridX
 
  override fun gridY(flipAxis: Boolean): PanelGridTheme = if (flipAxis) gridX else gridY

plot-builder/src/commonMain/kotlin/org/jetbrains/letsPlot/core/plot/builder/frame/PolarFrameOfReference.kt

@@ -8,6 +8,7 @@ package org.jetbrains.letsPlot.core.plot.builder.frame
 import org.jetbrains.letsPlot.commons.geometry.DoubleRectangle
 import org.jetbrains.letsPlot.core.plot.base.CoordinateSystem
 import org.jetbrains.letsPlot.core.plot.base.PlotContext
+import org.jetbrains.letsPlot.core.plot.base.render.svg.StrokeDashArraySupport
 import org.jetbrains.letsPlot.core.plot.base.render.svg.SvgComponent
 import org.jetbrains.letsPlot.core.plot.base.scale.ScaleBreaks
 import org.jetbrains.letsPlot.core.plot.base.theme.PanelGridTheme
@@ -133,7 +134,9 @@ internal class PolarFrameOfReference(
  override fun doStrokeBkgr(parent: SvgComponent) {
  val strokeBkgr = createPanelElement() {
  it.strokeColor().set(theme.panel().rectColor())
- it.strokeWidth().set(theme.panel().rectStrokeWidth())
+ val width = theme.panel().rectStrokeWidth()
+ it.strokeWidth().set(width)
+ StrokeDashArraySupport.apply(it, width, theme.panel().rectLineType())
  it.fillOpacity().set(0.0)
  }
 
@@ -143,7 +146,9 @@ internal class PolarFrameOfReference(
  override fun doDrawPanelBorder(parent: SvgComponent) {
  val border = createPanelElement() {
  it.strokeColor().set(theme.panel().borderColor())
- it.strokeWidth().set(theme.panel().borderWidth())
+ val width = theme.panel().borderWidth()
+ it.strokeWidth().set(width)
+ StrokeDashArraySupport.apply(it, width, theme.panel().borderLineType())
  it.fillOpacity().set(0.0)
  }
 

plot-builder/src/commonMain/kotlin/org/jetbrains/letsPlot/core/plot/builder/frame/SquareFrameOfReference.kt

@@ -10,6 +10,7 @@ import org.jetbrains.letsPlot.commons.geometry.DoubleVector
 import org.jetbrains.letsPlot.commons.values.Color
 import org.jetbrains.letsPlot.core.plot.base.CoordinateSystem
 import org.jetbrains.letsPlot.core.plot.base.PlotContext
+import org.jetbrains.letsPlot.core.plot.base.render.svg.StrokeDashArraySupport
 import org.jetbrains.letsPlot.core.plot.base.render.svg.SvgComponent
 import org.jetbrains.letsPlot.core.plot.base.scale.ScaleBreaks
 import org.jetbrains.letsPlot.core.plot.base.theme.AxisTheme
@@ -107,7 +108,9 @@ internal open class SquareFrameOfReference(
  protected open fun doDrawPanelBorder(parent: SvgComponent) {
  val panelBorder = SvgRectElement(layoutInfo.geomContentBounds).apply {
  strokeColor().set(theme.panel().borderColor())
- strokeWidth().set(theme.panel().borderWidth())
+ val width = theme.panel().borderWidth()
+ strokeWidth().set(width)
+ StrokeDashArraySupport.apply(this, width, theme.panel().borderLineType())
  fillOpacity().set(0.0)
  }
  parent.add(panelBorder)
@@ -195,7 +198,9 @@ internal open class SquareFrameOfReference(
  protected open fun doStrokeBkgr(parent: SvgComponent) {
  val panelRectStroke = SvgRectElement(layoutInfo.geomContentBounds).apply {
  strokeColor().set(theme.panel().rectColor())
- strokeWidth().set(theme.panel().rectStrokeWidth())
+ val width = theme.panel().rectStrokeWidth()
+ strokeWidth().set(width)
+ StrokeDashArraySupport.apply(this, width, theme.panel().rectLineType())
  fillOpacity().set(0.0)
  }
  parent.add(panelRectStroke)

plot-builder/src/commonMain/kotlin/org/jetbrains/letsPlot/core/plot/builder/guide/GridComponent.kt

@@ -7,6 +7,8 @@ package org.jetbrains.letsPlot.core.plot.builder.guide
 
 import org.jetbrains.letsPlot.commons.geometry.DoubleVector
 import org.jetbrains.letsPlot.commons.values.Color
+import org.jetbrains.letsPlot.core.plot.base.render.linetype.LineType
+import org.jetbrains.letsPlot.core.plot.base.render.svg.StrokeDashArraySupport
 import org.jetbrains.letsPlot.core.plot.base.render.svg.SvgComponent
 import org.jetbrains.letsPlot.core.plot.base.render.svg.lineString
 import org.jetbrains.letsPlot.core.plot.base.theme.PanelGridTheme
@@ -21,21 +23,31 @@ class GridComponent(
 
  if (gridTheme.showMinor()) {
  for (lineString in minorGrid) {
- val elem = buildGridLine(lineString, gridTheme.minorLineWidth(), gridTheme.minorLineColor())
+ val elem = buildGridLine(
+ lineString,
+ gridTheme.minorLineWidth(),
+ gridTheme.minorLineColor(),
+ gridTheme.minorLineType()
+ )
  rootGroup.children().add(elem)
  }
  }
 
  // Major grid.
  if (gridTheme.showMajor()) {
  for (lineString in majorGrid) {
- val elem = buildGridLine(lineString, gridTheme.majorLineWidth(), gridTheme.majorLineColor())
+ val elem = buildGridLine(
+ lineString,
+ gridTheme.majorLineWidth(),
+ gridTheme.majorLineColor(),
+ gridTheme.majorLineType()
+ )
  rootGroup.children().add(elem)
  }
  }
  }
 
- private fun buildGridLine(lineString: List<DoubleVector>, width: Double, color: Color): SvgNode {
+ private fun buildGridLine(lineString: List<DoubleVector>, width: Double, color: Color, lineType: LineType): SvgNode {
  val shapeElem: SvgShape = when {
  lineString.size == 2 -> SvgLineElement(lineString[0].x, lineString[0].y, lineString[1].x, lineString[1].y )
  lineString.size < 2 -> SvgPathElement()
@@ -44,6 +56,7 @@ class GridComponent(
 
  shapeElem.strokeColor().set(color)
  shapeElem.strokeWidth().set(width)
+ StrokeDashArraySupport.apply(shapeElem, width, lineType)
  shapeElem.fill().set(SvgColors.NONE)
  return shapeElem as SvgNode
  }