using Annulus;
using Azimuth;

namespace Glass.Testbed
{
    /// <summary>
    /// ClipsChildren dropping one rect from the accumulation: the badge clears its icon, but the region above
    /// still cuts it.
    /// </summary>
    public class ClipEscapeTestCase : TestCase
    {
        public ClipEscapeTestCase(string name) : base(name) { }

        protected override void Populate()
        {
            var regionSize = new Vector(150, 110);
            var iconSize = new Vector(60, 60);
            var badgeSize = new Vector(44, 30);
            var badgeOverhang = new Vector(28, -14);

            AddCaption("Left: the icon clips its children, so the badge is cut off at its edge");
            AddCaption("Right: the icon stops clipping, so the badge overhangs it and the region still trims it");

            Rect stage = ContentAggregator.NewRow(regionSize.Y);

            void AddRegion(string name, bool badgeEscapes)
            {
                var region = NewChild<Panel>(name);
                region.Material = UiPacksheetMaterials.GreenFlatPanel;
                region.Bounds = stage.NewCol(regionSize.X, margin: 90);

                // Parked near the region's right edge, so an escaping badge runs into the region's own clip rather
                // than merely clearing the icon.
                Rect insideRegion = Rect.FromPositionAndSize(Vector.Zero, region.ClientRect.Size)
                    .Erode(new Rect.BorderSize { Top = 20, Right = 10 });
                Rect iconColumn = insideRegion.NewCol(iconSize.X, HorizontalJustification.Right);

                var icon = region.ChildControls.NewChild<Panel>("icon");
                icon.Material = UiPacksheetMaterials.RedFlatPanel;
                icon.Bounds = iconColumn.NewRow(iconSize.Y);
                icon.ClipsChildren = !badgeEscapes;

                // Taken from the icon's own right edge and then pushed back out, since overhanging two sides is
                // what gives the clip something to cut.
                Rect insideIcon = Rect.FromPositionAndSize(Vector.Zero, icon.ClientRect.Size);
                Rect badgeSlot = insideIcon.NewCol(badgeSize.X, HorizontalJustification.Right);

                var badge = icon.ChildControls.NewChild<Panel>("badge");
                badge.Material = UiPacksheetMaterials.YellowFlatPanel;
                badge.Bounds = Rect.FromPositionAndSize(badgeSlot.TopLeft + badgeOverhang, badgeSize);
            }

            AddRegion("confining region", badgeEscapes: false);
            AddRegion("escaping region", badgeEscapes: true);
        }
    }
}