func (l *SplitterLayout) LayoutChildren() {
s := l.outer.Size().Contract(l.Padding())
o := l.Padding().LT()
children := l.outer.Children()
splitterCount := len(children) / 2
splitterWidth := l.splitterWidth
if l.orientation.Horizontal() {
s.W -= splitterWidth * splitterCount
} else {
s.H -= splitterWidth * splitterCount
}
netWeight := float32(0.0)
for i, c := range children {
if isSplitter := (i & 1) == 1; !isSplitter {
netWeight += l.weights[c.Control]
}
}
d := 0
for i, c := range children {
var cr math.Rect
if isSplitter := (i & 1) == 1; !isSplitter {
cm := c.Control.Margin()
frac := l.weights[c.Control] / netWeight
if l.orientation.Horizontal() {
cw := int(float32(s.W) * frac)
cr = math.CreateRect(d+cm.L, cm.T, d+cw-cm.R, s.H-cm.B)
d += cw
} else {
ch := int(float32(s.H) * frac)
cr = math.CreateRect(cm.L, d+cm.T, s.W-cm.R, d+ch-cm.B)
d += ch
}
} else {
if l.orientation.Horizontal() {
cr = math.CreateRect(d, 0, d+splitterWidth, s.H)
} else {
cr = math.CreateRect(0, d, s.W, d+splitterWidth)
}
d += splitterWidth
}
c.Layout(cr.Offset(o).Canon())
}
}
func (l *TableLayout) LayoutChildren() {
s := l.outer.Size().Contract(l.outer.Padding())
o := l.outer.Padding().LT()
cw, ch := s.W/l.columns, s.H/l.rows
var cr math.Rect
for _, c := range l.outer.Children() {
cm := c.Control.Margin()
cell := l.grid[c.Control]
x, y := cell.x*cw, cell.y*ch
w, h := x+cell.w*cw, y+cell.h*ch
cr = math.CreateRect(x+cm.L, y+cm.T, w-cm.R, h-cm.B)
c.Layout(cr.Offset(o).Canon())
}
}
func (f *font) align(rect math.Rect, size math.Size, ascent int, h gxui.HorizontalAlignment, v gxui.VerticalAlignment) math.Point {
var origin math.Point
switch h {
case gxui.AlignLeft:
origin.X = rect.Min.X
case gxui.AlignCenter:
origin.X = rect.Mid().X - (size.W / 2)
case gxui.AlignRight:
origin.X = rect.Max.X - size.W
}
switch v {
case gxui.AlignTop:
origin.Y = rect.Min.Y + ascent
case gxui.AlignMiddle:
origin.Y = rect.Mid().Y - (size.H / 2) + ascent
case gxui.AlignBottom:
origin.Y = rect.Max.Y - size.H + ascent
}
return origin
}
func (c *canvas) DrawRoundedRect(r math.Rect, tl, tr, bl, br float32, pen gxui.Pen, brush gxui.Brush) {
if tl == 0 && tr == 0 && bl == 0 && br == 0 && pen.Color.A == 0 {
c.DrawRect(r, brush)
return
}
p := gxui.Polygon{
gxui.PolygonVertex{Position: r.TL(), RoundedRadius: tl},
gxui.PolygonVertex{Position: r.TR(), RoundedRadius: tr},
gxui.PolygonVertex{Position: r.BR(), RoundedRadius: br},
gxui.PolygonVertex{Position: r.BL(), RoundedRadius: bl},
}
c.DrawPolygon(p, pen, brush)
}
// Layout sets the Child size and offset relative to the parent.
// Layout should only be called by the Child's parent.
func (c *Child) Layout(rect math.Rect) {
c.Offset = rect.Min
c.Control.SetSize(rect.Size())
}