Beispiel #1
0
func change(point *math.Point, direction string) {
	switch direction {
	case Top:
		point.Y -= 20
	case Right:
		point.X += 20
	case Bottom:
		point.Y += 20
	case Left:
		point.X -= 20
	}
}
Beispiel #2
0
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
}
Beispiel #3
0
func (f *font) Measure(fl *gxui.TextBlock) math.Size {
	size := math.Size{W: 0, H: f.glyphMaxSizeDips.H}
	var offset math.Point
	for _, r := range fl.Runes {
		if r == '\n' {
			offset.X = 0
			offset.Y += f.glyphMaxSizeDips.H
			continue
		}
		offset.X += f.advanceDips(r)
		size = size.Max(math.Size{W: offset.X, H: offset.Y + f.glyphMaxSizeDips.H})
	}
	return size
}
Beispiel #4
0
func (f *font) Layout(fl *gxui.TextBlock) (offsets []math.Point) {
	sizeDips := math.Size{}
	offsets = make([]math.Point, len(fl.Runes))
	var offset math.Point
	for i, r := range fl.Runes {
		if r == '\n' {
			offset.X = 0
			offset.Y += f.glyphMaxSizeDips.H
			continue
		}

		offsets[i] = offset
		offset.X += f.advanceDips(r)
		sizeDips = sizeDips.Max(math.Size{W: offset.X, H: offset.Y + f.glyphMaxSizeDips.H})
	}

	origin := f.align(fl.AlignRect, sizeDips, f.ascentDips, fl.H, fl.V)
	for i, p := range offsets {
		offsets[i] = p.Add(origin)
	}
	return offsets
}
Beispiel #5
0
func (l *LinearLayout) DesiredSize(min, max math.Size) math.Size {
	if l.sizeMode.Fill() {
		return max
	}

	bounds := min.Rect()
	children := l.outer.Children()

	horizontal := l.direction.Orientation().Horizontal()
	offset := math.Point{X: 0, Y: 0}
	for _, c := range children {
		cs := c.Control.DesiredSize(math.ZeroSize, max)
		cm := c.Control.Margin()
		cb := cs.Expand(cm).Rect().Offset(offset)
		if horizontal {
			offset.X += cb.W()
		} else {
			offset.Y += cb.H()
		}
		bounds = bounds.Union(cb)
	}

	return bounds.Size().Expand(l.outer.Padding()).Clamp(min, max)
}