0.9.1-alpha.64

Patch Changes

• 1a5bc45: feat(chart): Chart — the card a figure is read on

  A figure on a screen is a card with words around it, and those words are a title, a subtitle, a number and a legend. Every one of them is a Text that should take the theme's type rather than a prop on a figure — so they are slots: Chart.Header, Chart.Heading, Chart.Title, Chart.Description, Chart.Value, Chart.Legend, Chart.LegendItem, Chart.Footer.

  The frame owns the appearance and the figure takes it. variant, size and color are handed down, so the legend's dots and the figure's series are the same colours in the same order without either being told twice — which is the whole reason Chart.Legend can exist rather than being a prop on a figure. A figure that names its own still wins, and one outside a frame is unchanged.

  seriesCount is the one number the frame asks for: it cannot count the figure's series, because it has not rendered the figure and the keys are that figure's props, and a legend needs the palette walked to the right length or its third dot is the wrong colour.

  The labels stay the caller's. What a series is called is a sentence in their language; which colour it got is arithmetic the palette already did. labels is the short form and children are the long one — a legend carrying a value beside each name, which is what a donut wants under it.

  Optional in both directions. A figure on its own draws no ground and belongs in whatever card the caller has. A frame with no figure in it is a complete use too: a card with a title, a value and a footer is what a chart looks like while its data is loading, or when there is none.

  Chart.Heading exists for ProgressBar.Header's reason — the gap between a title and its subtitle is a different gap from the one between that block and the legend beside it, and two gaps belong to two roots. The recipe's root slot is now the card and the plot's box is plot; the series ink moves to a slot of its own rather than riding on the root's color.