mattercontrol/PartPreviewWindow/OverflowMenu.cs

/*
Copyright (c) 2017, John Lewin
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this
   list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

The views and conclusions contained in the software and documentation are those
of the authors and should not be interpreted as representing official policies,
either expressed or implied, of the FreeBSD Project.
*/

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using MatterHackers.Agg;
using MatterHackers.Agg.Image;
using MatterHackers.Agg.Platform;
using MatterHackers.Agg.RasterizerScanline;
using MatterHackers.Agg.Transform;
using MatterHackers.Agg.UI;
using MatterHackers.Agg.VertexSource;
using MatterHackers.Localizations;

namespace MatterHackers.MatterControl.PartPreviewWindow
{
	public class OverflowMenu : PopupMenuButton
	{
		private ImageBuffer gradientBackground;

		public OverflowMenu(IconColor iconColor = IconColor.Theme)
			: base(new ImageWidget(AggContext.StaticData.LoadIcon(Path.Combine("ViewTransformControls", "overflow.png"), 32, 32, iconColor)) { Margin = new BorderDouble(left: 5), HAnchor = HAnchor.Left })
		{
			this.ToolTipText = "More...".Localize();
		}

		public OverflowMenu(GuiWidget viewWidget)
			: base(viewWidget)
		{
		}

		public override void OnDrawBackground(Graphics2D graphics2D)
		{
			if (gradientBackground != null)
			{
				graphics2D.Render(gradientBackground, this.LocalBounds.Left, 0);
			}

			//base.OnDrawBackground(graphics2D);
		}

		public override void OnLoad(EventArgs args)
		{
			base.OnLoad(args);

			var innerGradient = new gradient_x();
			var outerGradient = new gradient_clamp_adaptor(innerGradient); // gradient_repeat_adaptor/gradient_reflect_adaptor/gradient_clamp_adaptor

			var rect = new RoundedRect(new RectangleDouble(0, 0, this.LocalBounds.Width, this.LocalBounds.Height), 0);

			var ras = new ScanlineRasterizer();
			ras.add_path(rect);

			gradientBackground = new ImageBuffer((int)this.LocalBounds.Width, (int)this.LocalBounds.Height);
			gradientBackground.SetRecieveBlender(new BlenderPreMultBGRA());

			var color = this.BackgroundColor;

			var colors = new GradientColors(
				Enumerable.Range(0, 256).Select(i => new Color(color, i)).ToArray());

			var scanlineRenderer = new ScanlineRenderer();
			scanlineRenderer.GenerateAndRender(
				ras,
				new scanline_unpacked_8(), 
				gradientBackground,
				new span_allocator(),
				new span_gradient(
					new span_interpolator_linear(Affine.NewIdentity()),
					outerGradient, 
					colors, //new gradient_linear_color(Color.Transparent, this.BackgroundColor, ), 
					0, 
					5));
		}

		private class GradientColors : IColorFunction
		{
			private List<Color> colors;

			public GradientColors(IEnumerable<Color> colors)
			{
				this.colors = new List<Color>(colors);
			}

			public Color this[int v] => colors[v];

			public int size() => colors.Count;
		}
	}
}