Foundation: tokens, theme, icons, i18n, Button, Spinner, gallery scaffold

internal/paint.go

@@ -0,0 +1,35 @@
+// Package internal holds drawing shared by MujicaUI components.
+package internal
+
+import (
+	"github.com/egoist/mygo/ui"
+
+	"mujicaui/theme"
+)
+
+// FocusRing strokes the keyboard ring outside r, leaving the focus gap.
+func FocusRing(p *ui.Painter, r ui.Rect, radius float32, c ui.Color) {
+	o := theme.FocusGap + theme.FocusWidth
+	p.Stroke(ui.Rect{X: r.X - o, Y: r.Y - o, W: r.W + 2*o, H: r.H + 2*o}, c, radius+o, theme.FocusWidth)
+}
+
+// Ring replaces MyGo's ring on e with the MujicaUI ring.
+func Ring(e *ui.Element, c ui.Color, radius float32) *ui.Element {
+	return e.FocusRing(false).DrawOver(func(p *ui.Painter, r ui.Rect) {
+		if e.FocusVisible() {
+			FocusRing(p, r, radius, c)
+		}
+	})
+}
+
+// Diamond returns a rhombus of size s centered at (cx, cy).
+func Diamond(cx, cy, s float32) *ui.Path {
+	var p ui.Path
+	h := s / 2
+	p.MoveTo(cx, cy-h)
+	p.LineTo(cx+h, cy)
+	p.LineTo(cx, cy+h)
+	p.LineTo(cx-h, cy)
+	p.Close()
+	return &p
+}