v0.2.16

A card for an app's main view that floats on the window's chrome, a picture picker, drag domains that span views, and one paint order under text that a selection shows through.

New

• window::content(floating, cx) is the element an app's main view is drawn in: floating, a rounded, bordered card on the Theme::sidebar_bg chrome its parent paints, with half Theme::CONTENT_INSET of margin and the parent padded by the other half, so cards side by side meet the inset apart, filled with Theme::content_bg — Theme::content_background covering Brand::content_opacity of the chrome (from Theme::CONTENT_OPACITY, Material::Thick's) under Theme::vibrancy, opaque otherwise, and casting theme::content_shadows only when opaque; flat, a plain Theme::window_bg fill. window::content_fill is the one colour it shows, chrome included.
• Controls::picture_picker is a row of tiles, each a picture the caller draws over its label, the chosen one ringed in the accent — macOS's appearance picker.
• theme::over composites one translucent colour over another.
• Theme::content_background is the floating card's fill at full coverage, set by a ThemeFamily file as content_background and derived from a family's seed.
• drag::Domain and tabs::Reorder implement Default.
• theme::ink_over(text, page, surface, plate) is the colour a glyph is drawn in over what is painted under it: its own where it reads at the better of the contrasts it kept on the page and on the surface its washes make, else the surface's colour (inverse video), else black or white.
• input::overdraw::Layers is what is painted under a text — washes and a selection, each in a shape its painter gives it. A painter draws Layers::painted, the selection under the washes, and the overdraw takes its plates from the same order.
• input::caret::cover is the colour a solid caret draws the glyph it covers in.
• highlight_wash(color, theme) is the wash a highlight of any colour paints under text, and find_washes(color) the find washes cut from any colour; default_highlight and default_find are built on them.
• ui::color::SystemColor is each of Apple's system colours, with its swatch and a stored name (name, from_name). default_swatches is every one, and HighlightColor::system is the one a highlight colour paints in.

Changed

• input::overdraw::overdraws and input::caret::cover take a Layers.
• theme::frosted_window is theme::behind_window_blending, after AppKit's .behindWindow blending.
• drag::Domain::new, drag::Domain::with_ghost and tabs::Reorder::new take no Painter: a domain may span views, and each region's view is redrawn for the frames the domain owes.

Fixed

• A selection and a solid caret of one colour give a glyph one ink, in text fields, markdown text, code blocks and the terminal: a glyph that does not read on them takes the colour of what it sits on.
• A glyph under a selection and a wash takes its ink over the two together, held to the contrast it had on its wash: text an app coloured for a highlight stays legible under a selection or a solid caret.