using System;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.IO;
using System.Runtime.InteropServices;
using System.Windows.Forms;

namespace TrOCR
{

	public partial class FmScreenPaste : Form
	{

		public FmScreenPaste(Image img, Point LocationPoint)
		{
			m_aeroEnabled = false;
			InitializeComponent();
			BackgroundImage = img;
			Location = LocationPoint;
			FormBorderStyle = FormBorderStyle.None;
			MouseDown += Form1_MouseDown;
			MouseMove += Form1_MouseMove;
			MouseUp += Form1_MouseUp;
			var size = img.Size;
			MaximumSize = (MinimumSize = size);
			Size = size;
			MouseDoubleClick += 双击_MouseDoubleClick;
		}

		private void Form_MouseWheel(object sender, MouseEventArgs e)
		{
		}

		private void RightCMS_Opening(object sender, CancelEventArgs e)
		{
			var topMost = TopMost;
			if (topMost)
			{
				置顶ToolStripMenuItem.Text = "取消置顶";
			}
			else
			{
				置顶ToolStripMenuItem.Text = "置顶窗体";
			}
		}

		private void 置顶ToolStripMenuItem_Click(object sender, EventArgs e)
		{
			TopMost = !TopMost;
		}

		private void 关闭ToolStripMenuItem_Click(object sender, EventArgs e)
		{
			BackgroundImage.Dispose();
			GC.Collect();
			Close();
		}

		private void 复制toolStripMenuItem_Click(object sender, EventArgs e)
		{
			Clipboard.SetImage(BackgroundImage);
		}

		private void 保存toolStripMenuItem_Click(object sender, EventArgs e)
		{
			var saveFileDialog = new SaveFileDialog();
			saveFileDialog.Filter = "jpg图片(*.jpg)|*.jpg|png图片(*.png)|*.jpg|bmp图片(*.bmp)|*.bmp";
			saveFileDialog.AddExtension = false;
			saveFileDialog.FileName = string.Concat("tianruo_", DateTime.Now.Year.ToString(), "-", DateTime.Now.Month.ToString(), "-", DateTime.Now.Day.ToString(), "-", DateTime.Now.Ticks.ToString());
			saveFileDialog.Title = "保存图片";
			saveFileDialog.FilterIndex = 1;
			saveFileDialog.RestoreDirectory = true;
			var flag = saveFileDialog.ShowDialog() == DialogResult.OK;
			if (flag)
			{
				var extension = Path.GetExtension(saveFileDialog.FileName);
				var flag2 = extension.Equals(".jpg");
				if (flag2)
				{
					BackgroundImage.Save(saveFileDialog.FileName, ImageFormat.Jpeg);
				}
				var flag3 = extension.Equals(".png");
				if (flag3)
				{
					BackgroundImage.Save(saveFileDialog.FileName, ImageFormat.Png);
				}
				var flag4 = extension.Equals(".bmp");
				if (flag4)
				{
					BackgroundImage.Save(saveFileDialog.FileName, ImageFormat.Bmp);
				}
			}
		}

		[DllImport("user32.dll")]
		public static extern bool ReleaseCapture();

		[DllImport("user32.dll")]
		public static extern bool SendMessage(IntPtr hwnd, int wMsg, int wParam, int lParam);

		private void Form_MouseDown(object sender, MouseEventArgs e)
		{
			var wMsg = 274;
			var num = 61456;
			var num2 = 2;
			ReleaseCapture();
			SendMessage(Handle, wMsg, num + num2, 0);
		}

		[DllImport("Gdi32.dll")]
		private static extern IntPtr CreateRoundRectRgn(int nLeftRect, int nTopRect, int nRightRect, int nBottomRect, int nWidthEllipse, int nHeightEllipse);

		[DllImport("dwmapi.dll")]
		public static extern int DwmExtendFrameIntoClientArea(IntPtr hWnd, ref MARGINS pMarInset);

		[DllImport("dwmapi.dll")]
		public static extern int DwmSetWindowAttribute(IntPtr hwnd, int attr, ref int attrValue, int attrSize);

		[DllImport("dwmapi.dll")]
		public static extern int DwmIsCompositionEnabled(ref int pfEnabled);

		private bool CheckAeroEnabled()
		{
			var flag = Environment.OSVersion.Version.Major >= 6;
			bool result;
			if (flag)
			{
				var num = 0;
				DwmIsCompositionEnabled(ref num);
				result = (num == 1);
			}
			else
			{
				result = false;
			}
			return result;
		}

		protected override void WndProc(ref Message m)
		{
			var msg = m.Msg;
			var flag = m.Msg == 132 && (int)m.Result == 1;
			if (flag)
			{
				m.Result = (IntPtr)2;
			}
			var flag2 = msg == 133 && m_aeroEnabled;
			if (flag2)
			{
				var num = 2;
				DwmSetWindowAttribute(Handle, 2, ref num, 4);
				var margins = new MARGINS
				{
					bottomHeight = 1,
					leftWidth = 1,
					rightWidth = 1,
					topHeight = 1
				};
				DwmExtendFrameIntoClientArea(Handle, ref margins);
			}
			base.WndProc(ref m);
		}

		protected override CreateParams CreateParams
		{
			get
			{
				m_aeroEnabled = CheckAeroEnabled();
				var createParams = base.CreateParams;
				var flag = !m_aeroEnabled;
				if (flag)
				{
					createParams.ClassStyle |= 131072;
				}
				return createParams;
			}
		}

		private void 双击_MouseDoubleClick(object sender, MouseEventArgs e)
		{
			BackgroundImage.Dispose();
			GC.Collect();
			Close();
		}

		public void AdjustSize()
		{
			var size = new Size(10, 25);
			MaximumSize = (MinimumSize = size);
			Size = size;
		}

		private void Form1_MouseDown(object sender, MouseEventArgs e)
		{
			var flag = e.Button == MouseButtons.Left;
			if (flag)
			{
				mouseOff = new Point(-e.X, -e.Y);
				leftFlag = true;
			}
		}

		private void Form1_MouseMove(object sender, MouseEventArgs e)
		{
			var flag = leftFlag;
			if (flag)
			{
				var mousePosition = MousePosition;
				mousePosition.Offset(mouseOff.X, mouseOff.Y);
				Location = mousePosition;
			}
		}

		private void Form1_MouseUp(object sender, MouseEventArgs e)
		{
			var flag = leftFlag;
			if (flag)
			{
				leftFlag = false;
			}
		}

		protected override void OnPaint(PaintEventArgs e)
		{
			DoubleBuffered = true;
			var flag = BackgroundImage != null;
			if (flag)
			{
				e.Graphics.SmoothingMode = SmoothingMode.HighQuality;
				e.Graphics.DrawImage(BackgroundImage, new Rectangle(0, 0, Width, Height), 0, 0, BackgroundImage.Width, BackgroundImage.Height, GraphicsUnit.Pixel);
			}
			base.OnPaint(e);
		}

		protected override void OnPaintBackground(PaintEventArgs e)
		{
		}

		private int zoomLevel;

		private string ScreenshotLastSavePath;

		private bool m_aeroEnabled;

		private const int CS_DROPSHADOW = 131072;

		private const int WM_NCPAINT = 133;

		private const int WM_ACTIVATEAPP = 28;

		private const int WM_NCHITTEST = 132;

		private const int HTCLIENT = 1;

		private const int HTCAPTION = 2;

		private Point mouseOff;

		private bool leftFlag;

		public struct MARGINS
		{

			public int leftWidth;

			public int rightWidth;

			public int topHeight;

			public int bottomHeight;
		}
	}
}