protected override Size OnGetPreferredSize(SizeConstraint widthConstraint, SizeConstraint heightConstraint)
{
FrameBox2 parent = (FrameBox2)Parent;
Size s = new Size(parent.Padding.HorizontalSpacing + parent.BorderWidth.HorizontalSpacing, parent.Padding.VerticalSpacing + parent.BorderWidth.VerticalSpacing);
if (child != null)
{
s += child.Surface.GetPreferredSize(widthConstraint - s.Width, heightConstraint - s.Height, true);
}
return(s);
}
protected override void OnReallocate()
{
if (child != null)
{
FrameBox2 parent = (FrameBox2)Parent;
Rectangle rect = Bounds;
var padding = parent.padding;
var border = parent.borderWidth;
rect.X += padding.Left + border.Left;
rect.Y += padding.Top + border.Top;
rect.Width -= padding.HorizontalSpacing + border.HorizontalSpacing;
rect.Height -= padding.VerticalSpacing + border.VerticalSpacing;
rect = child.Surface.GetPlacementInRect(rect).Round().WithPositiveSize();
SetChildBounds(child, rect);
}
}
protected override void OnDraw(Context ctx, Rectangle dirtyRect)
{
base.OnDraw(ctx, dirtyRect);
FrameBox2 parent = (FrameBox2)Parent;
var border = parent.borderWidth;
var r = Bounds;
//ctx.SetLineDash (0);
ctx.SetColor(parent.borderColor);
if (border.Top > 0)
{
ctx.MoveTo(r.X, r.Y + border.Top / 2);
ctx.RelLineTo(r.Width, 0);
ctx.SetLineWidth(border.Top);
ctx.Stroke();
}
if (border.Bottom > 0)
{
ctx.MoveTo(r.X, r.Bottom - border.Bottom / 2);
ctx.RelLineTo(r.Width, 0);
ctx.SetLineWidth(border.Bottom);
ctx.Stroke();
}
if (border.Left > 0)
{
ctx.MoveTo(r.X + border.Left / 2, r.Y + border.Top);
ctx.RelLineTo(0, r.Height - border.Top - border.Bottom);
ctx.SetLineWidth(border.Left);
ctx.Stroke();
}
if (border.Right > 0)
{
ctx.MoveTo(r.Right - border.Right / 2, r.Y + border.Top);
ctx.RelLineTo(0, r.Height - border.Top - border.Bottom);
ctx.SetLineWidth(border.Right);
ctx.Stroke();
}
}
