add loading of gambatte-style palette files to the palette selector (includes drag and drop)

BizHawk.Emulation/Consoles/Nintendo/Gameboy/ColorChooserForm.Designer.cs

@@ -49,6 +49,7 @@
 			this.button3 = new System.Windows.Forms.Button();
 			this.button4 = new System.Windows.Forms.Button();
 			this.button5 = new System.Windows.Forms.Button();
+			this.button6 = new System.Windows.Forms.Button();
 			this.SuspendLayout();
 			// 
 			// panel1
@@ -245,11 +246,23 @@
 			this.button5.UseVisualStyleBackColor = true;
 			this.button5.Click += new System.EventHandler(this.button5_Click);
 			// 
+			// button6
+			// 
+			this.button6.Location = new System.Drawing.Point(42, 197);
+			this.button6.Name = "button6";
+			this.button6.Size = new System.Drawing.Size(75, 23);
+			this.button6.TabIndex = 28;
+			this.button6.Text = "Load...";
+			this.button6.UseVisualStyleBackColor = true;
+			this.button6.Click += new System.EventHandler(this.button6_Click);
+			// 
 			// ColorChooserForm
 			// 
+			this.AllowDrop = true;
 			this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
 			this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
 			this.ClientSize = new System.Drawing.Size(315, 259);
+			this.Controls.Add(this.button6);
 			this.Controls.Add(this.button5);
 			this.Controls.Add(this.button4);
 			this.Controls.Add(this.button3);
@@ -273,6 +286,8 @@
 			this.Controls.Add(this.panel1);
 			this.Name = "ColorChooserForm";
 			this.Text = "ColorChooserForm";
+			this.DragDrop += new System.Windows.Forms.DragEventHandler(this.ColorChooserForm_DragDrop);
+			this.DragEnter += new System.Windows.Forms.DragEventHandler(this.ColorChooserForm_DragEnter);
 			this.ResumeLayout(false);
 			this.PerformLayout();
 
@@ -301,5 +316,6 @@
 		private System.Windows.Forms.Button button3;
 		private System.Windows.Forms.Button button4;
 		private System.Windows.Forms.Button button5;
+		private System.Windows.Forms.Button button6;
 	}
 }

BizHawk.Emulation/Consoles/Nintendo/Gameboy/ColorChooserForm.cs

@@ -6,6 +6,7 @@ using System.Drawing;
 using System.Linq;
 using System.Text;
 using System.Windows.Forms;
+using System.IO;
 
 namespace BizHawk.Emulation.Consoles.Nintendo.Gameboy
 {
@@ -126,13 +127,66 @@ namespace BizHawk.Emulation.Consoles.Nintendo.Gameboy
 			}
 		}
 
+		/// <summary>
+		/// load gambatte-style .pal file
+		/// </summary>
+		/// <param name="f"></param>
+		/// <returns>null on failure</returns>
+		public static int[] LoadPalFile(TextReader f)
+		{
+			Dictionary<string, int> lines = new Dictionary<string, int>();
+
+			string line;
+			while ((line = f.ReadLine()) != null)
+			{
+				int i = line.IndexOf('=');
+				if (i < 0)
+					continue;
+				try
+				{
+					lines.Add(line.Substring(0, i), int.Parse(line.Substring(i + 1)));
+				}
+				catch (FormatException)
+				{
+				}
+			}
+
+			int[] ret = new int[12];
+			try
+			{
+				ret[0] = lines["Background0"];
+				ret[1] = lines["Background1"];
+				ret[2] = lines["Background2"];
+				ret[3] = lines["Background3"];
+				ret[4] = lines["Sprite%2010"];
+				ret[5] = lines["Sprite%2011"];
+				ret[6] = lines["Sprite%2012"];
+				ret[7] = lines["Sprite%2013"];
+				ret[8] = lines["Sprite%2020"];
+				ret[9] = lines["Sprite%2021"];
+				ret[10] = lines["Sprite%2022"];
+				ret[11] = lines["Sprite%2023"];
+			}
+			catch (KeyNotFoundException)
+			{
+				return null;
+			}
+			return ret;
+		}
+
+		void SetAllColors(int[] colors)
+		{
+			// fix alpha to 255 in created color objects, else problems
+			for (int i = 0; i < this.colors.Length; i++)
+				this.colors[i] = Color.FromArgb(255, Color.FromArgb(colors[i]));
+			RefreshAllBackdrops();
+		}
+
 		public static bool DoColorChooserFormDialog(int[] colors)
 		{
 			using (var dlg = new ColorChooserForm())
 			{
-				for (int i = 0; i < dlg.colors.Length; i++)
-					dlg.colors[i] = Color.FromArgb(255, Color.FromArgb(colors[i]));
-				dlg.RefreshAllBackdrops();
+				dlg.SetAllColors(colors);
 
 				var result = dlg.ShowDialog();
 				if (result != DialogResult.OK)
@@ -147,5 +201,61 @@ namespace BizHawk.Emulation.Consoles.Nintendo.Gameboy
 				}
 			}
 		}
+
+		void LoadColorFile(string filename)
+		{
+			try
+			{
+				using (StreamReader f = new StreamReader(filename))
+				{
+					int[] newcolors = LoadPalFile(f);
+					if (newcolors == null)
+						throw new Exception();
+
+					SetAllColors(newcolors);
+				}
+			}
+			catch
+			{
+				MessageBox.Show(this, "Error loading .pal file!");
+			}
+		}
+
+
+		private void button6_Click(object sender, EventArgs e)
+		{
+			using (var ofd = new OpenFileDialog())
+			{
+				//ofd.InitialDirectory =
+				ofd.Filter = "Gambatte Palettes (*.pal)|*.pal|All Files|*.*";
+				ofd.RestoreDirectory = true;
+
+				var result = ofd.ShowDialog(this);
+				if (result != System.Windows.Forms.DialogResult.OK)
+					return;
+
+				LoadColorFile(ofd.FileName);
+			}
+		}
+
+		private void ColorChooserForm_DragDrop(object sender, DragEventArgs e)
+		{
+			if (e.Data.GetDataPresent(DataFormats.FileDrop))
+			{
+				string[] files = (string[])e.Data.GetData(DataFormats.FileDrop);
+
+				if (files.Length > 1)
+					return;
+				LoadColorFile(files[0]);
+			}
+		}
+
+		private void ColorChooserForm_DragEnter(object sender, DragEventArgs e)
+		{
+			if (e.Data.GetDataPresent(DataFormats.FileDrop))
+				e.Effect = DragDropEffects.Move;
+			else
+				e.Effect = DragDropEffects.None;
+		}
 	}
 }

BizHawk.Emulation/Consoles/Nintendo/Gameboy/Gambatte.cs

@@ -430,6 +430,10 @@ namespace BizHawk.Emulation.Consoles.GB
 			get { return 0; }
 		}
 
+		#endregion
+
+		#region palette
+
 		/// <summary>
 		/// palette colors to display in dmg mode
 		/// </summary>
@@ -464,9 +468,6 @@ namespace BizHawk.Emulation.Consoles.GB
 				LibGambatte.gambatte_setdmgpalettecolor(GambatteState, (LibGambatte.PalType)(i / 4), (uint)i % 4, (uint)dmgcolors[i]);
 		}
 
-
-
-
 		#endregion
 
 		#region ISoundProvider