Remove constant padding around geometry area, update default margins …

…for some elements.

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

@@ -71,14 +71,20 @@ internal open class ThemeValuesBase : ThemeValues(VALUES) {
  Elem.Margin.LEFT to 0.0
  ),
  PLOT_TITLE to mapOf(
- Elem.SIZE to Defaults.FONT_LARGE
+ Elem.SIZE to Defaults.FONT_LARGE,
+ Elem.Margin.TOP to 0.0,
+ Elem.Margin.BOTTOM to 10.0
  ),
  PLOT_SUBTITLE to mapOf(
- Elem.SIZE to Defaults.FONT_MEDIUM
+ Elem.SIZE to Defaults.FONT_MEDIUM,
+ Elem.Margin.TOP to 0.0,
+ Elem.Margin.BOTTOM to 10.0
  ),
  PLOT_CAPTION to mapOf(
  Elem.HJUST to 1.0,
- Elem.SIZE to Defaults.FONT_SMALL
+ Elem.SIZE to Defaults.FONT_SMALL,
+ Elem.Margin.TOP to 10.0,
+ Elem.Margin.BOTTOM to 0.0
  ),
 // TEXT_WIDTH_FACTOR to 1.0,
  PANEL_BORDER_RECT to ELEMENT_BLANK,
@@ -156,10 +162,10 @@ internal open class ThemeValuesBase : ThemeValues(VALUES) {
  ),
 
  PLOT_MARGIN to mapOf(
- Elem.Margin.TOP to 0.0,
- Elem.Margin.RIGHT to 0.0,
- Elem.Margin.BOTTOM to 0.0,
- Elem.Margin.LEFT to 0.0
+ Elem.Margin.TOP to 6.5,
+ Elem.Margin.RIGHT to 6.5,
+ Elem.Margin.BOTTOM to 6.5,
+ Elem.Margin.LEFT to 6.5
  ),
  )
  }

plot-builder/src/commonMain/kotlin/org/jetbrains/letsPlot/core/plot/builder/layout/LayoutConstants.kt

@@ -11,7 +11,7 @@ import org.jetbrains.letsPlot.core.plot.builder.layout.util.Insets
 internal object LayoutConstants {
  val GEOM_MIN_SIZE = DoubleVector(50.0, 50.0)
 
- const val GEOM_AREA_PADDING = 10.0
+ const val GEOM_AREA_PADDING = 0.0
 
  // Horizontal axis labels
  const val H_AXIS_LABELS_EXPAND = 10.0 // Value by which labels can go beyond the axis bounds (px).