using System;
using System.Drawing;
using System.Windows.Forms;

// The 'windowHandle' parameter will contain the window handle for the:
//   - Active window when run by hotkey
//   - Window Location target when run by a Window Location rule
//   - TitleBar Button owner when run by a TitleBar Button
//   - Jump List owner when run from a Taskbar Jump List
//   - Currently focused window if none of these match
public static class DisplayFusionFunction
{
	public static void Run(IntPtr windowHandle)
	{
		//get the width from the user
		using(WindowPercentInput dialog = new WindowPercentInput(windowHandle))
		{
			if(dialog.ShowDialog() != DialogResult.OK)
				return;
				
			Rectangle workArea = BFS.Monitor.GetMonitorWorkAreaByWindow(windowHandle);
			try
			{
				int width, height;
				//if the user entered nothing for the width, keep it the same
				if(string.IsNullOrEmpty(dialog.WidthPercent))
				{
						width = BFS.Window.GetBounds(windowHandle).Width;
				}
				else
				{
					//if the number entered is greater than 100, treat is as a pixel value
					int dialogWidth = Convert.ToInt32(dialog.WidthPercent);
					if(dialogWidth > 100)
						width = dialogWidth;
					else
						width = (int)Math.Round(workArea.Width * dialogWidth / 100m);
				}
					
				//if the user entered nothing for the height, keep it the same
				if(string.IsNullOrEmpty(dialog.HeightPercent))
				{
						height = BFS.Window.GetBounds(windowHandle).Height;
				}
				else
				{
					//if the number entered is greater than 100, treat is as a pixel value
					int dialogHeight = Convert.ToInt32(dialog.HeightPercent);
					if(dialogHeight > 100)
						height = dialogHeight;
					else
						height = (int)Math.Round(workArea.Height * dialogHeight / 100m);
				}
				
				//set the window size, compensate for invisible windows borders if this is windows 10
					BFS.Window.SetSize(windowHandle, width, height);
			}
			catch
			{
			}
		}
	}

	private class WindowPercentInput : Form
	{
		private TextBox txtWidth = new TextBox();
		private TextBox txtHeight = new TextBox();
		private IntPtr ParentWindow = IntPtr.Zero;
		internal string WidthPercent
		{
			get
			{
				return txtWidth.Text;
			}
		}
		
		internal string HeightPercent
		{
			get
			{
				return txtHeight.Text;
			}
		}
				
		internal WindowPercentInput(IntPtr parent)
		{
			Label label2 = new Label();
			Label label1 = new Label();
			Label label3 = new Label();
			Button btnOK = new Button();
			Button btnCancel = new Button();
			this.ParentWindow = parent;
			this.SuspendLayout();
			
			Rectangle workArea = BFS.Monitor.GetMonitorWorkAreaByWindow(parent);
			Rectangle windowBounds = BFS.Window.GetBounds(parent);
			
			label1.Location = new Point(8, 8);
			label1.Size = new Size(296, 23);
			label1.TabIndex = 0;
			if(BFS.Window.IsMaximized(parent))
				label1.Text = "Current Window: Maximized";
			else
				label1.Text = string.Format("Current Window Size: {0}px ({1}%) x {2}px ({3}%)", windowBounds.Width, (int)Math.Round(windowBounds.Width / (decimal)workArea.Width * 100m), windowBounds.Height, (int)Math.Round(windowBounds.Height / (decimal)workArea.Height * 100m));
			
			label1.TextAlign = ContentAlignment.MiddleLeft;
			
			label3.Location = new Point(8, 32);
			label3.Size = new Size(296, 23);
			label3.TabIndex = 1;
			label3.Text = "Enter the width and height in percent:";
			label3.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
			
			this.txtWidth.Location = new Point(8, 64);
			this.txtWidth.Size = new Size(144, 20);
			this.txtWidth.TabIndex = 2;

			label2.Location = new Point(152, 64);
			label2.Size = new Size(16, 23);
			label2.TabIndex = 3;
			label2.Text = "X";
			label2.TextAlign = ContentAlignment.MiddleLeft;
			
			this.txtHeight.Location = new Point(168, 64);
			this.txtHeight.Size = new Size(144, 20);
			this.txtHeight.TabIndex = 4;

			btnOK.Location = new Point(144, 96);
			btnOK.Size = new Size(80, 24);
			btnOK.TabIndex = 5;
			btnOK.Text = "OK";

			btnCancel.DialogResult = DialogResult.Cancel;
			btnCancel.Location = new Point(232, 96);
			btnCancel.Size = new Size(80, 24);
			btnCancel.TabIndex = 6;
			btnCancel.Text = "Cancel";
			btnCancel.UseVisualStyleBackColor = true;

			this.ClientSize = new System.Drawing.Size(323, 131);
			this.Controls.Add(this.txtHeight);
			this.Controls.Add(this.txtWidth);
			this.Controls.Add(label1);
			this.Controls.Add(label3);
			this.Controls.Add(btnCancel);
			this.Controls.Add(btnOK);			
			this.Controls.Add(label2);			
			
			this.MinimizeBox = false;
			this.MaximizeBox = false;
			this.ShowIcon = false;
			this.ShowInTaskbar = false;
			this.ResumeLayout(false);
			this.Text = "Set Window Size";
			
			btnOK.Click += btnOK_Click;
			btnCancel.Click += btnCancel_Click;
			this.Load += OnLoad;
			
			this.AcceptButton = btnOK;
			this.CancelButton = btnCancel;
		}
		
		private void OnLoad(object sender, EventArgs e)
		{
			if(this.ParentWindow != IntPtr.Zero)
			{
				Rectangle bounds = BFS.Window.GetBounds(this.ParentWindow);
				this.Location = new Point(bounds.X - this.Width / 2 + bounds.Width / 2, bounds.Y - this.Height / 2 + bounds.Height / 2);
			}
			
			BFS.Window.Focus(this.Handle);
			BFS.Window.SetAlwaysOnTop(this.Handle, true);
			this.txtWidth.Focus();
		}
		
		private void btnOK_Click(object sender, EventArgs e)
		{
			this.DialogResult = DialogResult.OK;
			this.Close();
		}
		
		private void btnCancel_Click(object sender, EventArgs e)
		{
			this.DialogResult = DialogResult.Cancel;
			this.Close();
		}
	}
}