标签：核心 mamicode 允许 rgb copy inf 下载地址 else 窗体
该插件目前只提供截图功能，你可以继续优化截图的编辑功能。
该插件使用js调用OpenScreen方法后启动截图功能，在截图功能启动后按键盘C键抓取屏幕，然后选中截取部分后双击选取将会完成截图，鼠标的右键为取消选中区域和取消已抓取的的屏幕。双击桌面右下角的文字可以关闭截图功能。
///
/// 截图核心
///
[Description("截图核心")]
public class ScreenCore
{
#region
///
/// 截图ActiveX
///
public ActiveXScreen activeXScreen = null;
///
/// 关闭窗体
///
internal IcoForm icoForm = null;
///
/// 截屏窗体
///
internal ScreenForm screenForm = null;
///
/// 截图状态
///
public CaptureStatus captureStatus = CaptureStatus.Close;
///
/// 键盘钩
///
public HookUilt HookObject = null;
///
/// 要截取的屏幕
///
public Screen screen = null;
///
/// 原始截图
///
public Bitmap OriginalScreen = null;
///
/// 蒙版截图
///
public Bitmap MaskScreen = null;
///
/// 截图边框厚度
///
public int CatBoder = 1;
///
/// 截图边框颜色
///
public Color CatBodeColor = Color.YellowGreen;
///
/// 截图边框点的外边距
///
public int CatBoderDotMargin = 3;
///
/// 截图边框Rect
///
public ImageRectangle CatRect = null;
///
/// 鼠标的类型
///
public ScreenMoveTypes ScreenMoveType = ScreenMoveTypes.Normal;
///
/// 鼠标按下的坐标
///
public Point MoveDownPoint;
///
/// 鼠标移动时的上一次坐标
///
public Point MoveStartPoint;
#endregion
public ScreenCore(ActiveXScreen _activeXScreen)
{
this.activeXScreen = _activeXScreen;
this.icoForm = new IcoForm(this);
this.screenForm = new ScreenForm(this);
this.HookObject = new HookUilt();
this.HookObject.KeyDownHandler += new KeyEventHandler(this.Screen_KeyDown);
}
///
/// 键盘监听
///
///
///
private void Screen_KeyDown(object sender, KeyEventArgs e)
{
switch (e.KeyCode)
{
case Keys.C://截图
{
if (this.captureStatus == CaptureStatus.Open)
{
this.CaptureScreen();
}
break;
}
case Keys.Up://上移
{
if (this.captureStatus == CaptureStatus.Capture && this.IsCapture())
{
this.CatRect.Rect = new Rectangle(this.GetRectanglePoint(this.CatRect.Rect.X, this.CatRect.Rect.Y - 1), this.CatRect.Rect.Size);
this.InitializeRectangleDot();
this.screenForm.Invalidate();
}
break;
}
case Keys.Down://下移
{
if (this.captureStatus == CaptureStatus.Capture && this.IsCapture())
{
this.CatRect.Rect = new Rectangle(this.GetRectanglePoint(this.CatRect.Rect.X, this.CatRect.Rect.Y + 1), this.CatRect.Rect.Size);
this.InitializeRectangleDot();
this.screenForm.Invalidate();
}
break;
}
case Keys.Left://左移
{
if (this.captureStatus == CaptureStatus.Capture && this.IsCapture())
{
this.CatRect.Rect = new Rectangle(this.GetRectanglePoint(this.CatRect.Rect.X - 1, this.CatRect.Rect.Y), this.CatRect.Rect.Size);
this.InitializeRectangleDot();
this.screenForm.Invalidate();
}
break;
}
case Keys.Right://右移
{
if (this.captureStatus == CaptureStatus.Capture && this.IsCapture())
{
this.CatRect.Rect = new Rectangle(this.GetRectanglePoint(this.CatRect.Rect.X + 1, this.CatRect.Rect.Y), this.CatRect.Rect.Size);
this.InitializeRectangleDot();
this.screenForm.Invalidate();
}
break;
}
}
}
///
/// 初始化截图边框信息
///
/// 截图边框开始坐标
/// 截图边框结束坐标
public void InitializeRectangle(Point moveStartPoint, Point moveEndPoint)
{
Point point = new Point(Math.Min(moveStartPoint.X, moveEndPoint.X), Math.Min(moveStartPoint.Y, moveEndPoint.Y));
Size size = new Size(Math.Abs(moveStartPoint.X - moveEndPoint.X), Math.Abs(moveStartPoint.Y - moveEndPoint.Y));
this.CatRect.Rect = new Rectangle(point, size);
}
///
/// 初始化截图边框点信息
///
public void InitializeRectangleDot()
{
int dot_width = this.CatBoderDotMargin * 2;
this.CatRect.TopLeftRect = new Rectangle(this.CatRect.Rect.X - this.CatBoderDotMargin, this.CatRect.Rect.Y - this.CatBoderDotMargin, dot_width, dot_width);
this.CatRect.TopMiddleRect = new Rectangle(this.CatRect.Rect.X + this.CatRect.Rect.Width / 2 - this.CatBoderDotMargin, this.CatRect.Rect.Y - this.CatBoderDotMargin, dot_width, dot_width);
this.CatRect.TopRightRect = new Rectangle(this.CatRect.Rect.Right - this.CatBoderDotMargin, this.CatRect.Rect.Y - this.CatBoderDotMargin, dot_width, dot_width);
this.CatRect.BottomLeftRect = new Rectangle(this.CatRect.Rect.X - this.CatBoderDotMargin, this.CatRect.Rect.Bottom - this.CatBoderDotMargin, dot_width, dot_width);
this.CatRect.BottomMiddleRect = new Rectangle(this.CatRect.Rect.X + this.CatRect.Rect.Width / 2 - this.CatBoderDotMargin, this.CatRect.Rect.Bottom - this.CatBoderDotMargin, dot_width, dot_width);
this.CatRect.BottomRightRect = new Rectangle(this.CatRect.Rect.Right - this.CatBoderDotMargin, this.CatRect.Rect.Bottom - this.CatBoderDotMargin, dot_width, dot_width);
this.CatRect.MiddleLeftRect = new Rectangle(this.CatRect.Rect.X - this.CatBoderDotMargin, this.CatRect.Rect.Y + this.CatRect.Rect.Height / 2 - this.CatBoderDotMargin, dot_width, dot_width);
this.CatRect.MiddleRightRect = new Rectangle(this.CatRect.Rect.Right - this.CatBoderDotMargin, this.CatRect.Rect.Y + this.CatRect.Rect.Height / 2 - this.CatBoderDotMargin, dot_width, dot_width);
}
///
/// 缩放截图边框
///
/// 缩放前鼠标坐标
/// 缩放后鼠标坐标
public void ZoonRectangle(Point moveStartPoint, Point moveEndPoint)
{
int x = moveEndPoint.X - moveStartPoint.X;
int y = moveEndPoint.Y - moveStartPoint.Y;
#region 更新鼠标类型
if (this.ScreenMoveType == ScreenMoveTypes.DownZoonTopLeft)
{
this.CatRect.Rect = new Rectangle(this.CatRect.Rect.X + x, this.CatRect.Rect.Y + y, this.CatRect.Rect.Width - x, this.CatRect.Rect.Height - y);
if (this.CatRect.Rect.Width 0 && this.CatRect.Rect.Height 0)
{
this.ScreenMoveType = ScreenMoveTypes.DownZoonBottomRight;
}
else if (this.CatRect.Rect.Width 0)
{
this.ScreenMoveType = ScreenMoveTypes.DownZoonTopRight;
}
else if (this.CatRect.Rect.Height 0)
{
this.ScreenMoveType = ScreenMoveTypes.DownZoonBottomLeft;
}
}
else if (this.ScreenMoveType == ScreenMoveTypes.DownZoonTopMiddle)
{
this.CatRect.Rect = new Rectangle(this.CatRect.Rect.X, this.CatRect.Rect.Y + y, this.CatRect.Rect.Width, this.CatRect.Rect.Height - y);
if (this.CatRect.Rect.Height 0)
{
this.ScreenMoveType = ScreenMoveTypes.DownZoonBottomMiddle;
}
}
else if (this.ScreenMoveType == ScreenMoveTypes.DownZoonTopRight)
{
this.CatRect.Rect = new Rectangle(this.CatRect.Rect.X, this.CatRect.Rect.Y + y, this.CatRect.Rect.Width + x, this.CatRect.Rect.Height - y);
if (this.CatRect.Rect.Width 0 && this.CatRect.Rect.Height 0)
{
this.ScreenMoveType = ScreenMoveTypes.DownZoonBottomLeft;
}
else if (this.CatRect.Rect.Width 0)
{
this.ScreenMoveType = ScreenMoveTypes.DownZoonTopLeft;
}
else if (this.CatRect.Rect.Height 0)
{
this.ScreenMoveType = ScreenMoveTypes.DownZoonBottomRight;
}
}
else if (this.ScreenMoveType == ScreenMoveTypes.DownZoonBottomLeft)
{
this.CatRect.Rect = new Rectangle(this.CatRect.Rect.X + x, this.CatRect.Rect.Y, this.CatRect.Rect.Width - x, this.CatRect.Rect.Height + y);
if (this.CatRect.Rect.Width 0 && this.CatRect.Rect.Height 0)
{
this.ScreenMoveType = ScreenMoveTypes.DownZoonTopRight;
}
else if (this.CatRect.Rect.Width 0)
{
this.ScreenMoveType = ScreenMoveTypes.DownZoonBottomRight;
}
else if (this.CatRect.Rect.Height 0)
{
this.ScreenMoveType = ScreenMoveTypes.DownZoonTopLeft;
}
}
else if (this.ScreenMoveType == ScreenMoveTypes.DownZoonBottomMiddle)
{
this.CatRect.Rect = new Rectangle(this.CatRect.Rect.X, this.CatRect.Rect.Y, this.CatRect.Rect.Width, this.CatRect.Rect.Height + y);
if (this.CatRect.Rect.Height 0)
{
this.ScreenMoveType = ScreenMoveTypes.DownZoonTopMiddle;
}
}
else if (this.ScreenMoveType == ScreenMoveTypes.DownZoonBottomRight)
{
this.CatRect.Rect = new Rectangle(this.CatRect.Rect.X, this.CatRect.Rect.Y, this.CatRect.Rect.Width + x, this.CatRect.Rect.Height + y);
if (this.CatRect.Rect.Width 0 && this.CatRect.Rect.Height 0)
{
this.ScreenMoveType = ScreenMoveTypes.DownZoonTopLeft;
}
else if (this.CatRect.Rect.Width 0)
{
this.ScreenMoveType = ScreenMoveTypes.DownZoonBottomLeft;
}
else if (this.CatRect.Rect.Height 0)
{
this.ScreenMoveType = ScreenMoveTypes.DownZoonTopRight;
}
}
else if (this.ScreenMoveType == ScreenMoveTypes.DownZoonMiddleLeft)
{
this.CatRect.Rect = new Rectangle(this.CatRect.Rect.X + x, this.CatRect.Rect.Y, this.CatRect.Rect.Width - x, this.CatRect.Rect.Height);
if (this.CatRect.Rect.Width 0)
{
this.ScreenMoveType = ScreenMoveTypes.DownZoonMiddleRight;
}
}
else if (this.ScreenMoveType == ScreenMoveTypes.DownZoonMiddleRight)
{
this.CatRect.Rect = new Rectangle(this.CatRect.Rect.X, this.CatRect.Rect.Y, this.CatRect.Rect.Width + x, this.CatRect.Rect.Height);
if (this.CatRect.Rect.Width 0)
{
this.ScreenMoveType = ScreenMoveTypes.DownZoonMiddleLeft;
}
}
#endregion
#region 更新截图边框防止匡高出现负数
int x_tmp = this.CatRect.Rect.X;
int y_tmp = this.CatRect.Rect.Y;
int width_tmp = this.CatRect.Rect.Width;
int height_tmp = this.CatRect.Rect.Height;
if (this.CatRect.Rect.Width 0)
{
width_tmp = -1 * this.CatRect.Rect.Width;
x_tmp = this.CatRect.Rect.X - width_tmp;
}
if (this.CatRect.Rect.Height 0)
{
height_tmp = -1 * this.CatRect.Rect.Height;
y_tmp = this.CatRect.Rect.Y - height_tmp;
}
this.CatRect.Rect = new Rectangle(x_tmp, y_tmp, width_tmp, height_tmp);
#endregion
}
///
/// 获取截图边框在屏幕的允许坐标中
///
///
///
///
public Point GetRectanglePoint(int x, int y)
{
if (x this.screen.Bounds.X)
x = this.screen.Bounds.X;
if (x > this.screen.Bounds.Right - this.CatRect.Rect.Width)
x = this.screen.Bounds.Right - this.CatRect.Rect.Width;
if (y this.screen.Bounds.Y)
y = this.screen.Bounds.Y;
if (y > this.screen.Bounds.Bottom - this.CatRect.Rect.Height)
y = this.screen.Bounds.Bottom - this.CatRect.Rect.Height;
return new Point(x, y);
}
///
/// 打开截屏
///
public void OpenScreen()
{
this.captureStatus = CaptureStatus.Open;
this.icoForm.Show();
this.screenForm.Hide();
this.icoForm.LoadLocation();
this.HookObject.Hook_Start();
}
///
/// 关闭截屏
///
public void ColseScreen()
{
this.CatRect = null;
this.DisposeImage(true, true);
this.HookObject.Hook_Clear();
this.icoForm.Hide();
this.screenForm.Hide();
this.captureStatus = CaptureStatus.Close;
}
///
/// 截屏
///
private void CaptureScreen()
{
this.icoForm.Hide();
this.screenForm.Hide();
this.screen = Screen.FromControl(this.screenForm);
this.screenForm.BackgroundImage = null;
this.DisposeImage(true, true);
//原图
this.OriginalScreen = new Bitmap(this.screen.Bounds.Width, this.screen.Bounds.Height);
Graphics g = Graphics.FromImage(this.OriginalScreen);
g.CopyFromScreen(new Point(0, 0), new Point(0, 0), this.screen.Bounds.Size);
//蒙版图
this.MaskScreen = (Bitmap)this.OriginalScreen.Clone();
g = Graphics.FromImage(this.MaskScreen);
SolidBrush mask_sb = new SolidBrush(Color.FromArgb(150, 1, 1, 1));
g.FillRectangle(mask_sb, this.screen.Bounds);
mask_sb.Dispose();
g.Dispose();
this.screenForm.BackgroundImage = (Image)this.MaskScreen;
this.screenForm.Location = this.screen.Bounds.Location;
this.screenForm.Size = this.screen.Bounds.Size;
this.screenForm.Show();
this.captureStatus = CaptureStatus.Capture;
}
///
/// 释放截取的图片
///
/// 是否释放原图
/// 是否释放蒙版图
public void DisposeImage(bool Original, bool Mask)
{
if (Original && this.OriginalScreen != null)
{
this.OriginalScreen.Dispose();
this.OriginalScreen = null;
}
if (Mask && this.MaskScreen != null)
{
this.MaskScreen.Dispose();
this.MaskScreen = null;
}
}
///
/// 获取截取的图片
///
///
public Bitmap GetCaptureImage()
{
Bitmap captureImage = new Bitmap(this.CatRect.Rect.Width, this.CatRect.Rect.Height);//选中截图
using (Graphics g = Graphics.FromImage(captureImage))
{
g.DrawImage(this.OriginalScreen, 0, 0, this.CatRect.Rect, GraphicsUnit.Pixel);
return captureImage;
}
}
///
/// 获取截取的图片64为字符串
///
/// 截取的图片
///
public string GetCaptureImageBase64String(Bitmap bmp)
{
string captureImageBase64 = "data:image/jpeg;base64,";
using (MemoryStream ms = new MemoryStream())
{
bmp.Save(ms, ImageFormat.Jpeg);
captureImageBase64 += Convert.ToBase64String(ms.ToArray());
}
return captureImageBase64;
}
///
/// 是否有截图边框
///
///
public bool IsCapture()
{
if (this.CatRect == null || this.CatRect.Rect.Width 1 || this.CatRect.Rect.Height 1)
{
return false;
}
return true;
}
}
源码下载地址：ActiveX网页截图插件.zip
ActiveX网页截图插件
标签：核心 mamicode 允许 rgb copy inf 下载地址 else 窗体
原文地址：https://www.cnblogs.com/tlmbem/p/12384592.html