Avoid tooltip flickering

[bric3]

Ideas :

• Heavyweight balloon tooltip flickers when shown weisJ/darklaf#82
• https://stackoverflow.com/questions/5500999/possible-to-stop-flickering-java-tooltip-in-heavyweight-mode
• https://stackoverflow.com/questions/8592264/tooltip-behavior-that-treats-a-jcomponent-with-subcomponents-as-a-whole-sans-f#comment10658681_8592264

[bric3]

    private fun adjustPosition(
        componentPoint: Point,
        flamegraphView: FlamegraphView<*>,
        tooltipComponent: JComponent,
        hoveredFrameRectangle: Rectangle
    ) {
        val gapBetweenPopupAndFrame = JBUI.scale(6)

        val height = tooltipComponent.preferredSize.height
        if (flamegraphView.mode == FlamegraphView.Mode.FLAMEGRAPH) {
            if (componentPoint.y + height > flamegraphView.component.visibleRect.height) {
                componentPoint.y -= height + gapBetweenPopupAndFrame
            } else {
                componentPoint.y += hoveredFrameRectangle.height + gapBetweenPopupAndFrame
            }
        } else {
            componentPoint.y -= height + gapBetweenPopupAndFrame
        }

        val width = tooltipComponent.preferredSize.width
        if (componentPoint.x + width > flamegraphView.component.visibleRect.width) {
            componentPoint.x = flamegraphView.component.visibleRect.width - width
        } else {
            componentPoint.x += gapBetweenPopupAndFrame
        }
    }

Look at JPopup instead ?