using System;
using System.Drawing;
using Wankuma.Interop;

namespace Wankuma.Drawing.Printing
{
	/// <summary>
	/// PrinterInfo の概要の説明です。
	/// </summary>
	public sealed class PrinterInfo
	{
		private PrinterInfo()
		{
		}


		/// <summary>
		/// プリンタのマージンを取得します。
		/// 用紙の縦モードで取得です。
		/// </summary>
		/// <param name="PrinterName"></param>
		/// <param name="PageBounds">ページバウンズ</param>
		/// <returns>取得したマージン</returns>
		public static Rectangle MarginBounds( string PrinterName, Rectangle PageBounds )
		{
			//PrinterNameがnullや""だと例外
			if ( PrinterName == null || PrinterName == "" )
			{
				throw new ArgumentNullException("PrinterName");
			}


			//デバイスキャップラッパオブジェクトを作成
			using ( GetDeviceCapsWrapper devicecaps = new GetDeviceCapsWrapper() )
			{
				//各マージンは.NETFrameworkのデフォルトと同じ1inchとする
				int TopMargin = 100;
				int LeftMargin = 100;
				int RightMargin = 100;
				int BottomMargin = 100;

				if ( devicecaps.Init(PrinterName) == true )
				{

					int XRes = devicecaps.GetData(GetDeviceCapsWrapper.CommandIndex.LOGPIXELSX);
					int YRes = devicecaps.GetData(GetDeviceCapsWrapper.CommandIndex.LOGPIXELSY);

					LeftMargin = (int)((float)devicecaps.GetData(GetDeviceCapsWrapper.CommandIndex.PHYSICALOFFSETX) / (float)XRes * 100.0);
					TopMargin = (int)((float)devicecaps.GetData(GetDeviceCapsWrapper.CommandIndex.PHYSICALOFFSETY) / (float)YRes * 100.0);
					int Width = (int)((float)devicecaps.GetData(GetDeviceCapsWrapper.CommandIndex.PHYSICALWIDTH) / (float)XRes * 100.0);
					int Height = (int)((float)devicecaps.GetData(GetDeviceCapsWrapper.CommandIndex.PHYSICALHEIGHT) / (float)YRes * 100.0);

					int HorzRes = (int)((float)devicecaps.GetData(GetDeviceCapsWrapper.CommandIndex.HORZRES) / (float)XRes * 100.0);
					int VertRes = (int)((float)devicecaps.GetData(GetDeviceCapsWrapper.CommandIndex.VERTRES) / (float)YRes * 100.0);

					RightMargin = Width - HorzRes - LeftMargin;
					BottomMargin = Height - VertRes - TopMargin;

				}
				if ( PageBounds.Width > PageBounds.Height )
				{
					//返却用構造体の作成
					return new Rectangle(TopMargin, LeftMargin, PageBounds.Width - TopMargin - BottomMargin, PageBounds.Height - LeftMargin - RightMargin);
				}
				else
				{
					//返却用構造体の作成
					return new Rectangle(LeftMargin, TopMargin, PageBounds.Width - LeftMargin - RightMargin, PageBounds.Height - TopMargin - BottomMargin);
				}
				
			}
		}
	}
}