func (b *ProgressBar) SetSize(size math.Size) {
b.ProgressBar.SetSize(size)
b.chevrons = nil
if size.Area() > 0 {
b.chevrons = b.theme.Driver().CreateCanvas(size)
b.chevronWidth = size.H / 2
cw := b.chevronWidth
for x := -cw * 2; x < size.W; x += cw * 2 {
// x0 x2
// | x1 | x3
// | |
// A-----B - y0
// \ \
// \ \
// F C - y1
// / /
// / /
// E-----D - y2
y0, y1, y2 := 0, size.H/2, size.H
x0, x1 := x, x+cw/2
x2, x3 := x0+cw, x1+cw
var chevron = gxui.Polygon{
/* A */ gxui.PolygonVertex{Position: math.Point{X: x0, Y: y0}},
/* B */ gxui.PolygonVertex{Position: math.Point{X: x2, Y: y0}},
/* C */ gxui.PolygonVertex{Position: math.Point{X: x3, Y: y1}},
/* D */ gxui.PolygonVertex{Position: math.Point{X: x2, Y: y2}},
/* E */ gxui.PolygonVertex{Position: math.Point{X: x0, Y: y2}},
/* F */ gxui.PolygonVertex{Position: math.Point{X: x1, Y: y1}},
}
b.chevrons.DrawPolygon(chevron, gxui.TransparentPen, gxui.CreateBrush(gxui.Gray30))
}
b.chevrons.Complete()
}
}
