pal-edit.cs

using System;
using System.Collections.Generic;
using Eto;
using Eto.Forms;
using Eto.Drawing;

namespace ShpSharp
{
	public class PalEditorForm : Form
	{
		public readonly Drawable Drawable;

		PaletteData palette;

		public PalEditorForm()
		{
			Title = "Palette Editor";
			ClientSize = new Size(400, 300);

			Drawable = new Drawable();
			Drawable.Paint += HandlePaint;
			Drawable.Width = 256; // Explicit is bad, but we'll do it for now
			Drawable.Visible = true;

			#region Open files
			var openFileDlg = new OpenFileDialog
			{
				CheckFileExists = true,
				MultiSelect = false,
				Filters = GetFilters(),
				Directory = new Uri(EtoEnvironment.GetFolderPath(EtoSpecialFolder.ApplicationResources))
			};

			var openFileCmd = new Command
			{
				MenuText = "Open Pal...",
				ToolBarText = "Open Pal",
				ToolTip = "Open a palette for editing",
				Shortcut = Application.Instance.CommonModifier | Keys.O
			};
			openFileCmd.Executed += (sender, e) =>
			{
				var result = openFileDlg.ShowDialog(this);
				if (result == DialogResult.Cancel)
					return;

				var file = openFileDlg.FileName;
				MessageBox.Show(this, "TODO: Open pal: " + file);
			};
			#endregion

			var newPalCmd = new Command
			{
				MenuText = "New Pal",
				ToolBarText = "New Pal",
				ToolTip = "Create a new palette",
			};
			newPalCmd.Executed += (sender, e) =>
			{
				Console.WriteLine("newPalCmd");
				palette = new PaletteData();
				palette.Entries = new PaletteEntry[256];
				Drawable.Invalidate();
			};

			var invalidateBtn = new Button
			{
				Text = "Invalidate Drawable",
				Visible = true,
			};
			invalidateBtn.Click += (sender, e) => Drawable.Invalidate();

			ToolBar = new ToolBar
			{
				Items =
				{
					openFileCmd,
					newPalCmd
				}
			};

			var layout = new TableLayout
			(
				Drawable,
				invalidateBtn
			);

			Content = layout;
		}

		void HandlePaint(object sender, PaintEventArgs e)
		{
			Console.WriteLine("HandlePaint from " + sender.ToString());
			var g = e.Graphics;
			var entries = palette.Entries;

			for (var i = 0; i < entries.Length; i++)
			{
				var c = Color.FromArgb
				(
					entries[i].R,
					entries[i].G,
					entries[i].B
				);
				var rect = RectForEntry(i);
				g.DrawPolygon(c, rect);
				Console.WriteLine("Color ({0}), Rect ({1}, {2}, {3}, {4})",
					c, rect[0], rect[1], rect[2], rect[3]);
			}
		}

		PointF[] RectForEntry(int i)
		{
			var w = 32;
			var h = 16;
			var rect = new PointF[]
			{
				new PointF(i * w,     i * h),     // top-left
				new PointF(i * w + w, i * h),     // top-right
				new PointF(i * w + w, i * h + h), // bottom-right
				new PointF(i * w,     i * h + h)  // bottom-left
			};

			// Console.WriteLine("Rect ({0}, {1}, {2}, {3})", rect[0], rect[1], rect[2], rect[3]);

			return rect;
		}

		IEnumerable<IFileDialogFilter> GetFilters()
		{
			yield return new FileDialogFilter("Palettes (.pal)", "pal");
		}
	}
}