using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using System.Threading;using System.Drawing.Drawing2D;using System.Reflection;namespace lxzh{ public partial class CaptureForm : Form { private MouseHook mHook; private List<Bitmap> historyLayer; //记录历史图层 private bool isStartDraw; private Point ptOriginal; private Point ptCurrent; private Bitmap bmpLayerCurrent; private Bitmap bmpLayerShow; private Cursor crossCursor; #region Properties private bool isCaptureCursor; /// <summary> /// 获取或设置是否捕获鼠标 /// </summary> public bool IsCaptureCursor { get { return isCaptureCursor; } set { isCaptureCursor = value; } } private bool isFromClipBoard; /// <summary> /// 获取或设置是否从剪切板获取图像 /// </summary> public bool IsFromClipBoard { get { return isFromClipBoard; } set { isFromClipBoard = value; } } /// <summary> /// 获取或设置是否显示图像信息 /// </summary> public bool ImgProcessBoxIsShowInfo { get { return imageProcessBox.IsShowInfo; } set { imageProcessBox.IsShowInfo = value; } } /// <summary> /// 获取或设置操作框点的颜色 /// </summary> public Color ImgProcessBoxDotColor { get { return imageProcessBox.DotColor; } set { imageProcessBox.DotColor = value; } } /// <summary> /// 获取或设置操作框边框颜色 /// </summary> public Color ImgProcessBoxLineColor { get { return imageProcessBox.LineColor; } set { imageProcessBox.LineColor = value; } } /// <summary> /// 获取或设置放大图形的原始尺寸 /// </summary> public Size ImgProcessBoxMagnifySize { get { return imageProcessBox.MagnifySize; } set { imageProcessBox.MagnifySize = value; } } /// <summary> /// 获取或设置放大图像的倍数 /// </summary> public int ImgProcessBoxMagnifyTimes { get { return imageProcessBox.MagnifyTimes; } set { imageProcessBox.MagnifyTimes = value; } } #endregion public CaptureForm() { InitializeComponent(); this.Location = new Point(0, 0); this.Size = new Size(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height); mHook = new MouseHook(); this.FormClosing = (s, e) => { mHook.UnLoadHook(); this.DelResource(); }; imageProcessBox.MouseLeave = (s, e) => this.Cursor = Cursors.Default; //后期一些操作历史记录图层 historyLayer = new List<Bitmap>(); List<String> items = new List<string>(); items.AddRange(new String[] { "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22" }); this.fontBox.SetItems(items); } private void DelResource() { if (bmpLayerCurrent != null) bmpLayerCurrent.Dispose(); if (bmpLayerShow != null) bmpLayerShow.Dispose(); historyLayer.Clear(); imageProcessBox.DeleResource(); GC.Collect(); } //初始化参数 private void InitMember() { plTool.Height = btnFinish.Bottom 3; plTool.Width = btnFinish.Right 3; plColorBox.Height = colorBox.Height; plTool.Paint = (s, e) => e.Graphics.DrawRectangle(Pens.SteelBlue, 0, 0, plTool.Width - 1, plTool.Height - 1); plColorBox.Paint = (s, e) => e.Graphics.DrawRectangle(Pens.SteelBlue, 0, 0, plColorBox.Width - 1, plColorBox.Height - 1); btnRect.Click = new EventHandler(selectToolButton_Click); btnEllipse.Click = new EventHandler(selectToolButton_Click); btnArrow.Click = new EventHandler(selectToolButton_Click); btnBrush.Click = new EventHandler(selectToolButton_Click); btnText.Click = new EventHandler(selectToolButton_Click); btnClose.Click = (s, e) => this.Close(); fontBox.ValueChanged = new EventHandler(fontBox_ValueChanged); colorBox.ColorChanged = (s, e) => txtDrawText.ForeColor = e.Color; } private void CaptureForm_Load(object sender, EventArgs e) { this.InitMember(); imageProcessBox.BaseImage = CaptureForm.GetScreen(this.isCaptureCursor,this.isFromClipBoard); mHook.SetHook(); mHook.MHookEvent = new MouseHook.MHookEventHandler(mHook_MHookEvent); imageProcessBox.IsDrawOperationDot = false; this.BeginInvoke(new MethodInvoker(() => this.Enabled = false)); // //crossCursor = new Cursor(Cursor.Current.Handle); //IntPtr customCursorHandle = Win32.LoadCursorFromFile("cross.cur"); //crossCursor.GetType().InvokeMember("handle", BindingFlags.Public | //BindingFlags.NonPublic | BindingFlags.Instance | //BindingFlags.SetField, null, crossCursor, //new object[] { customCursorHandle }); crossCursor = new Cursor(global::lxzh.Properties.Resources.cross.GetHicon()); //timer1.Interval = 500; //timer1.Enabled = true; } private void mHook_MHookEvent(object sender, MHookEventArgs e) { //如果窗体禁用 调用控件的方法设置信息显示位置 if (!this.Enabled) //貌似Hook不能精确坐标(Hook最先执行,执行完后的坐标可能与执行时传入的坐标发生了变化 猜测是这样) 所以放置了一个timer检测 imageProcessBox.SetInfoPoint(MousePosition.X, MousePosition.Y); //鼠标点下恢复窗体禁用 if (e.MButton == ButtonStatus.LeftDown || e.MButton == ButtonStatus.RightDown) { this.Enabled = true; imageProcessBox.IsDrawOperationDot = true; } #region 右键抬起 if (e.MButton == ButtonStatus.RightUp) { if (!imageProcessBox.IsDrawed) //没有绘制那么退出(直接this.Close右键将传递到下面) this.BeginInvoke(new MethodInvoker(() => this.Close())); } #endregion #region 找寻窗体 if (!this.Enabled) this.FoundAndDrawWindowRect(); #endregion } /// <summary> /// 将控件捕获的方向键点击事件传到窗体 /// 需要将窗体的KeyPreview属性设置为true /// </summary> /// <param name="keyData"></param> /// <returns></returns> protected override bool ProcessDialogKey(Keys keyData) { if (keyData == Keys.Up || keyData == Keys.Down || keyData == Keys.Left || keyData == Keys.Right || keyData == (Keys.Control | Keys.S) || keyData == (Keys.Control | Keys.Z)||keyData==Keys.Escape) return false; else return base.ProcessDialogKey(keyData); } /// <summary> /// 窗体接收到的按键点击事件 /// 处理方向键事件，移动选框位置 /// </summary> private void CaptureForm_KeyDown(object sender, KeyEventArgs e) { if (e.KeyValue >= 37 && e.KeyValue <= 40 && !txtDrawText.Visible) { Rectangle rect = imageProcessBox.SelectedRect; rect.Width -= 1; rect.Height -= 1; switch (e.KeyData) { case Keys.Left: if (rect.X > 0) { rect.X -= 1; Win32.SetCursorPos(MousePosition.X - 1, MousePosition.Y); } break; case Keys.Up: if (rect.Y > 0) { rect.Y -= 1; Win32.SetCursorPos(MousePosition.X, MousePosition.Y - 1); } break; case Keys.Right: if (rect.Right < this.Width) { rect.X = 1; Win32.SetCursorPos(MousePosition.X 1, MousePosition.Y); } break; case Keys.Down: if (rect.Bottom < this.Height) { rect.Y = 1; Win32.SetCursorPos(MousePosition.X, MousePosition.Y 1); } break; } imageProcessBox.SelectedRect = rect; SetToolBarLocation(); this.Refresh(); } switch (e.KeyData) { case Keys.Control | Keys.S: btnSave_Click(sender, e); break; case Keys.Control | Keys.Z: btnReset_Click(sender, e); break; case Keys.Escape: this.Close(); break; } //base.OnKeyDown(e); } //工具条前五个按钮绑定的公共事件 private void selectToolButton_Click(object sender, EventArgs e) { LxzhToolButton nowButton = sender as LxzhToolButton; plColorBox.Visible = nowButton.IsSelected; tBtn_TextFont.Visible = fontBox.Visible = nowButton.Equals(btnText); if (plColorBox.Visible) imageProcessBox.CanReset = false; else { imageProcessBox.CanReset = historyLayer.Count == 0; } this.SetToolBarLocation(); } private void fontBox_ValueChanged(object sender, EventArgs e) { int size=10; if (!string.IsNullOrEmpty(fontBox.Text)) { try { size=Convert.ToInt32(fontBox.Text); } catch (Exception ex) { Console.WriteLine(ex.ToString()); } } Font font=txtDrawText.Font; FontFamily fontF=font.FontFamily; FontStyle fontS = font.Style; txtDrawText.Font = new Font(fontF.Name, size, fontS, GraphicsUnit.Point, ((byte)(134))); } #region 截图后的一些后期绘制 private void imageProcessBox_MouseDown(object sender, MouseEventArgs e) { if (imageProcessBox.Cursor != Cursors.SizeAll && imageProcessBox.Cursor != Cursors.Default) plTool.Visible = false; //表示改变选取大小 隐藏工具条 //若果在选区内点击 并且有选择工具 if (e.Button == MouseButtons.Left && imageProcessBox.IsDrawed && HaveSelectedToolButton()) { if (imageProcessBox.SelectedRect.Contains(e.Location)) { if (btnText.IsSelected) { //如果选择的是绘制文本 弹出文本框 Size size = TextRenderer.MeasureText("X", txtDrawText.Font); Point loc = e.Location; if (loc.X size.Width > imageProcessBox.SelectedRect.Right-1) { loc.X = imageProcessBox.SelectedRect.Right - 1 - size.Width; if (loc.X < imageProcessBox.SelectedRect.Left 1) { loc.X = imageProcessBox.SelectedRect.Left 1; size.Width = imageProcessBox.SelectedRect.Width - 2; } } if (loc.Y size.Height > imageProcessBox.SelectedRect.Bottom - 1) { loc.Y = imageProcessBox.SelectedRect.Bottom - 1 - size.Height; if (loc.Y < imageProcessBox.SelectedRect.Top 1) { loc.Y = imageProcessBox.SelectedRect.Top 1; size.Height = imageProcessBox.SelectedRect.Height - 2; } } txtDrawText.Size = size; txtDrawText.Invalidate(); txtDrawText.Location = loc; txtDrawText.Visible = true; txtDrawText.Focus(); return; } this.Cursor = crossCursor; isStartDraw = true; Cursor.Clip = imageProcessBox.SelectedRect; } } ptOriginal = e.Location; } private void imageProcessBox_MouseMove(object sender, MouseEventArgs e) { ptCurrent = e.Location; //根据是否选择有工具决定 鼠标指针样式 if (imageProcessBox.SelectedRect.Contains(e.Location) && HaveSelectedToolButton() && imageProcessBox.IsDrawed) this.Cursor = crossCursor; else if (!imageProcessBox.SelectedRect.Contains(e.Location)) this.Cursor = Cursors.Default; Rectangle rect = new Rectangle(); rect.X = imageProcessBox.SelectedRect.X-2; rect.Y = imageProcessBox.SelectedRect.Y-2; rect.Width = imageProcessBox.SelectedRect.Width 6; rect.Height = imageProcessBox.SelectedRect.Height 6; if (imageProcessBox.IsStartDraw && plTool.Visible) //在重置选取的时候 重置工具条位置(成立于移动选取的时候) this.SetToolBarLocation(); if (isStartDraw && bmpLayerShow != null) { //如果在区域内点下那么绘制相应图形 using (Graphics g = Graphics.FromImage(bmpLayerShow)) { int tempWidth = 1; if (btnMiddle.IsSelected) tempWidth = 3; if (btnLarge.IsSelected) tempWidth = 5; Pen p = new Pen(colorBox.SelectedColor, tempWidth); g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias; #region 绘制矩形 if (btnRect.IsSelected) { int tempX = e.X - ptOriginal.X > 0 ? ptOriginal.X : e.X; int tempY = e.Y - ptOriginal.Y > 0 ? ptOriginal.Y : e.Y; g.Clear(Color.Transparent); g.DrawRectangle(p, tempX - imageProcessBox.SelectedRect.Left, tempY - imageProcessBox.SelectedRect.Top, Math.Abs(e.X - ptOriginal.X), Math.Abs(e.Y - ptOriginal.Y)); imageProcessBox.Invalidate(); } #endregion #region 绘制圆形 if (btnEllipse.IsSelected) { g.DrawLine(Pens.Red, 0, 0, 200, 200); g.Clear(Color.Transparent); g.DrawEllipse(p, ptOriginal.X - imageProcessBox.SelectedRect.Left, ptOriginal.Y - imageProcessBox.SelectedRect.Top, e.X - ptOriginal.X, e.Y - ptOriginal.Y); imageProcessBox.Invalidate(); } #endregion #region 绘制箭头 if (btnArrow.IsSelected) { g.Clear(Color.Transparent); int X = imageProcessBox.SelectedRect.Location.X; int Y = imageProcessBox.SelectedRect.Location.Y; float len = (float)Math.Sqrt(Math.Pow(ptCurrent.X - ptOriginal.X, 2) Math.Pow(ptCurrent.Y - ptOriginal.Y, 2)); //float k = (ptCurrent.Y - ptOriginal.Y) * 1.0F / (ptCurrent.X - ptOriginal.X); //float b = ptOriginal.Y - k * ptOriginal.X; float sink = (ptCurrent.Y - ptOriginal.Y) / len; float cosk = (ptCurrent.X - ptOriginal.X) / len; PointF[] points; float h = 10; if (btnMiddle.IsSelected) h = 16; if (btnLarge.IsSelected) h = 22; if (len < h) { points = new PointF[4]; points[0].X = points[3].X = ptOriginal.X h * cosk-X; points[0].Y = points[3].Y = ptOriginal.Y h * sink-Y; points[1].X = ptOriginal.X - h / 2 * sink - X; points[1].Y = ptOriginal.Y h / 2 * cosk - Y; points[2].X = ptOriginal.X h / 2 * sink - X; points[2].Y = ptOriginal.Y - h / 2 * cosk - Y; } else { points = new PointF[8]; points[0].X = ptCurrent.X - X; points[0].Y = ptCurrent.Y - Y; points[7] = points[0]; float tmpX = ptCurrent.X - h * cosk; float tmpY = ptCurrent.Y - h * sink; points[1].X = tmpX - h / 2 * sink - X; points[1].Y = tmpY h / 2 * cosk - Y; points[6].X = tmpX h / 2 * sink - X; points[6].Y = tmpY - h / 2 * cosk - Y; points[2].X = tmpX - h / 4 * sink - X; points[2].Y = tmpY h / 4 * cosk - Y; points[5].X = tmpX h / 4 * sink - X; points[5].Y = tmpY - h / 4 * cosk - Y; tmpX = ptOriginal.X; tmpY = ptOriginal.Y; points[3].X = tmpX - h / 50 * sink - X; points[3].Y = tmpY h / 50 * cosk - Y; points[4].X = tmpX h / 50 * sink - X; points[4].Y = tmpY - h / 50 * cosk - Y; } //AdjustableArrowCap lineArrow =new AdjustableArrowCap(10, 10, true); //p.StartCap = LineCap.Round; //p.CustomEndCap = lineArrow; //g.DrawLine(p, (Point)((Size)m_ptOriginal - (Size)imageProcessBox.SelectedRectangle.Location), // (Point)((Size)m_ptCurrent - (Size)imageProcessBox.SelectedRectangle.Location)); g.FillPolygon(new SolidBrush(colorBox.SelectedColor), points); //g.DrawPolygon(p, points); imageProcessBox.Invalidate(); } #endregion #region 绘制线条 if (btnBrush.IsSelected) { Point ptTemp = (Point)((Size)ptOriginal - (Size)imageProcessBox.SelectedRect.Location); p.LineJoin = System.Drawing.Drawing2D.LineJoin.Round; g.DrawLine(p, ptTemp, (Point)((Size)e.Location - (Size)imageProcessBox.SelectedRect.Location)); ptOriginal = e.Location; imageProcessBox.Invalidate(); } #endregion p.Dispose(); } } } private void imageProcessBox_MouseUp(object sender, MouseEventArgs e) { if (this.IsDisposed) return; if (e.Button == MouseButtons.Right) { //右键清空绘制 this.Enabled = false; imageProcessBox.ClearDraw(); imageProcessBox.CanReset = true; imageProcessBox.IsDrawOperationDot = false; historyLayer.Clear(); //清空历史记录 bmpLayerCurrent = null; bmpLayerShow = null; ClearToolBarBtnSelected(); plTool.Visible = false; plColorBox.Visible = false; } if (!imageProcessBox.IsDrawed) { //如果没有成功绘制选取 继续禁用窗体 this.Enabled = false; imageProcessBox.IsDrawOperationDot = false; } else if (!plTool.Visible) { //否则显示工具条 this.SetToolBarLocation(); //重置工具条位置 plTool.Visible = true; bmpLayerCurrent = imageProcessBox.GetResultBmp(); //获取选取图形 bmpLayerShow = new Bitmap(bmpLayerCurrent.Width, bmpLayerCurrent.Height); } //如果移动了选取位置 重新获取选取的图形 if (imageProcessBox.Cursor == Cursors.SizeAll && ptOriginal != e.Location) { bmpLayerCurrent.Dispose(); bmpLayerCurrent = imageProcessBox.GetResultBmp(); } if (!isStartDraw) return; Cursor.Clip = Rectangle.Empty; isStartDraw = false; if (e.Location == ptOriginal && !btnBrush.IsSelected) return; this.SetLayer(); //将绘制的图形绘制到历史图层中 } //绘制后期操作 private void imageProcessBox_Paint(object sender, PaintEventArgs e) { Graphics g = e.Graphics; if (historyLayer.Count > 0) //绘制保存的历史记录的最后一张图 g.DrawImage(historyLayer[historyLayer.Count - 1], imageProcessBox.SelectedRect.Location); if (bmpLayerShow != null) //绘制当前正在拖动绘制的图形(即鼠标点下还没有抬起确认的图形) g.DrawImage(bmpLayerShow, imageProcessBox.SelectedRect.Location); } #endregion //文本改变时重置文本框大小 private void txtDrawText_TextChanged(object sender, EventArgs e) { if (txtDrawText.Right < imageProcessBox.SelectedRect.Right - 1 || txtDrawText.Bottom < imageProcessBox.SelectedRect.Bottom - 1) { int lines = txtDrawText.Lines.Length; Size[] sizes = new Size[lines]; int maxWidth = imageProcessBox.SelectedRect.Right - txtDrawText.Left-1; int maxHeight = imageProcessBox.SelectedRect.Bottom - txtDrawText.Top-1; Size size = new Size(0,0); for (int i = 0; i < lines; i ) { sizes[i] = TextRenderer.MeasureText(txtDrawText.Text, txtDrawText.Font); if (sizes[i].Width >= maxWidth) { size.Width = maxWidth; if (sizes[i].Width / maxWidth * maxWidth == sizes[i].Width) size.Height = sizes[i].Width / maxWidth * sizes[i].Height; else size.Height = (sizes[i].Width / maxWidth 1) * sizes[i].Height; } else { if (size.Width < sizes[i].Width) { size.Width = sizes[i].Width; } size.Height = sizes[i].Height; } } if (size.Height > maxHeight) size.Height = maxHeight; //if (txtDrawText.Left se.Width > imageProcessBox.SelectedRectangle.Right) { // se.Width = imageProcessBox.SelectedRectangle.Right - txtDrawText.Left; // se.Height = TextRenderer.MeasureText("X", txtDrawText.Font).Height; //} //if (txtDrawText.Top se.Height > imageProcessBox.SelectedRectangle.Bottom) { // se.Height = imageProcessBox.SelectedRectangle.Bottom - txtDrawText.Top; //} if (size.Width < txtDrawText.Width) size.Width = txtDrawText.Width; if (size.Height < txtDrawText.Height) size.Height = txtDrawText.Height; txtDrawText.Size = size.IsEmpty ? new Size(50, txtDrawText.Font.Height) : size; txtDrawText.Invalidate(); } } //文本框失去焦点时 绘制文本 private void txtDrawText_Validating(object sender, CancelEventArgs e) { txtDrawText.Visible = false; if (string.IsNullOrEmpty(txtDrawText.Text.Trim())) { txtDrawText.Text = ""; return; } using (Graphics g = Graphics.FromImage(bmpLayerCurrent)) { SolidBrush sb = new SolidBrush(colorBox.SelectedColor); //g.DrawString(txtDrawText.Text, txtDrawText.Font, sb, // txtDrawText.Left - imageProcessBox.SelectedRectangle.Left, // txtDrawText.Top - imageProcessBox.SelectedRectangle.Top); Point ptT=txtDrawText.Location; Point ptS=imageProcessBox.SelectedRect.Location; g.DrawString(txtDrawText.Text, txtDrawText.Font, sb, new RectangleF(ptT.X-ptS.X,ptT.Y-ptS.Y,txtDrawText.Size.Width,txtDrawText.Height)); sb.Dispose(); txtDrawText.Text = ""; this.SetLayer(); //将文本绘制到当前图层并存入历史记录 imageProcessBox.Invalidate(); } } //撤销 private void btnReset_Click(object sender, EventArgs e) { using (Graphics g = Graphics.FromImage(bmpLayerShow)) { g.Clear(Color.Transparent); //清空当前临时显示的图像 } if (historyLayer.Count > 0) { //删除最后一层 historyLayer.RemoveAt(historyLayer.Count - 1); if (historyLayer.Count > 0) bmpLayerCurrent = historyLayer[historyLayer.Count - 1].Clone() as Bitmap; else bmpLayerCurrent = imageProcessBox.GetResultBmp(); imageProcessBox.Invalidate(); imageProcessBox.CanReset = historyLayer.Count == 0 && !HaveSelectedToolButton(); } else { //如果没有历史记录则取消本次截图 this.Enabled = false; imageProcessBox.ClearDraw(); imageProcessBox.IsDrawOperationDot = false; plTool.Visible = false; plColorBox.Visible = false; } } private void btnSave_Click(object sender, EventArgs e) { SaveFileDialog saveDlg = new SaveFileDialog(); saveDlg.Filter = "Bitmap(*.bmp)|*.bmp|JPEG(*.jpg)|*.jpg|PNG(*.png)|*.png"; saveDlg.FilterIndex = 3; saveDlg.FileName = Util.GetSavePicPath(); if (saveDlg.ShowDialog() == DialogResult.OK) { switch (saveDlg.FilterIndex) { case 1: bmpLayerCurrent.Clone(new Rectangle(0, 0, bmpLayerCurrent.Width, bmpLayerCurrent.Height), System.Drawing.Imaging.PixelFormat.Format24bppRgb).Save(saveDlg.FileName, System.Drawing.Imaging.ImageFormat.Bmp); this.Close(); break; case 2: bmpLayerCurrent.Save(saveDlg.FileName, System.Drawing.Imaging.ImageFormat.Jpeg); this.Close(); break; case 3: bmpLayerCurrent.Save(saveDlg.FileName, System.Drawing.Imaging.ImageFormat.Png); this.Close(); break; } } //m_bSave = false; } //将图像保存到剪贴板 private void tBtn_Finish_Click(object sender, EventArgs e) { Clipboard.SetImage(bmpLayerCurrent); this.Close(); } private void btnSticky_Click(object sender, EventArgs e) { new StickyForm(bmpLayerCurrent.Clone() as Bitmap).Show(); this.Close(); } private void imageProcessBox_DoubleClick(object sender, EventArgs e) { Clipboard.SetImage(bmpLayerCurrent); this.Close(); } private void timer1_Tick(object sender, EventArgs e) { //if (!this.Enabled) // imageProcessBox.SetInfoPoint(MousePosition.X, MousePosition.Y); } //根据鼠标位置找寻窗体并绘制边框 private void FoundAndDrawWindowRect() { Win32.LPPOINT pt = new Win32.LPPOINT(); pt.X = MousePosition.X; pt.Y = MousePosition.Y; IntPtr hWnd = Win32.ChildWindowFromPointEx(Win32.GetDesktopWindow(), pt, Win32.CWP_SKIPINVISIBL | Win32.CWP_SKIPDISABLED); if (hWnd != IntPtr.Zero) { IntPtr hTemp = hWnd; while (true) { Win32.ScreenToClient(hTemp, out pt); hTemp = Win32.ChildWindowFromPointEx(hWnd, pt, Win32.CWP_SKIPINVISIBL); if (hTemp == IntPtr.Zero || hTemp == hWnd) break; hWnd = hTemp; pt.X = MousePosition.X; pt.Y = MousePosition.Y; //坐标还原为屏幕坐标 } Win32.LPRECT rect = new Win32.LPRECT(); Win32.GetWindowRect(hWnd, out rect); imageProcessBox.SetSelectRect(new Rectangle(rect.Left, rect.Top, rect.Right - rect.Left, rect.Bottom - rect.Top)); } } //获取桌面图像 private static Bitmap GetScreen(bool bCaptureCursor, bool bFromClipBoard) { Bitmap bmp = new Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height); if (bCaptureCursor) //是否捕获鼠标 DrawCurToScreen(); //做完以上操作 才开始捕获桌面图像 using (Graphics g = Graphics.FromImage(bmp)) { g.CopyFromScreen(0, 0, 0, 0, bmp.Size); if (!bFromClipBoard) return bmp; using (Image imgClip = Clipboard.GetImage()) { if (imgClip != null) { using (SolidBrush sb = new SolidBrush(Color.FromArgb(150, 0, 0, 0))) { g.FillRectangle(sb, 0, 0, bmp.Width, bmp.Height); g.DrawImage(imgClip, (bmp.Width - imgClip.Width) >> 1, (bmp.Height - imgClip.Height) >> 1, imgClip.Width, imgClip.Height); } } } } return bmp; } //在桌面绘制鼠标 public static Rectangle DrawCurToScreen() { //如果直接将捕获到的鼠标画在bmp上 光标不会反色 指针边框也很浓 也就是说 //尽管bmp上绘制了图像 绘制鼠标的时候还是以黑色作为鼠标的背景 然后在将混合好的鼠标绘制到图像 会很别扭 //所以 干脆直接在桌面把鼠标绘制出来再截取桌面 using (Graphics g = Graphics.FromHwnd(IntPtr.Zero)) { //传入0默认就是桌面 Win32.GetDesktopWindow()也可以 Win32.PCURSORINFO pci; pci.cbSize = System.Runtime.InteropServices.Marshal.SizeOf(typeof(Win32.PCURSORINFO)); Win32.GetCursorInfo(out pci); if (pci.hCursor != IntPtr.Zero) { Cursor cur = new Cursor(pci.hCursor); Rectangle rectCur = new Rectangle((Point)((Size)MousePosition - (Size)cur.HotSpot), cur.Size); g.CopyFromScreen(0, 0, 0, 0, Screen.PrimaryScreen.Bounds.Size); //g.CopyFromScreen(rect_cur.Location, rect_cur.Location, rect_cur.Size); //在桌面绘制鼠标前 先在桌面绘制一下当前的桌面图像 //如果不绘制当前桌面 那么cur.Draw的时候会是用历史桌面的快照 进行鼠标的混合 那么到时候混出现底色(测试中就是这样的) cur.Draw(g, rectCur); return rectCur; } return Rectangle.Empty; } } //设置工具条位置 private void SetToolBarLocation() { int plToolX = imageProcessBox.SelectedRect.Right-plTool.Width; if (plToolX < 0) plToolX = 0; plTool.Left = plToolX; plColorBox.Left = plToolX; int plToolY = imageProcessBox.SelectedRect.Bottom 3; if (plToolY plTool.Height > this.Height) { plToolY = imageProcessBox.SelectedRect.Top - plTool.Height - 6 - imageProcessBox.Font.Height; if (plToolY <= 0) { plToolY = 0; } } plTool.Top = plToolY; if (plColorBox.Visible) { int plColorBoxY = plTool.Bottom 2; int tempHeight = plColorBox.Height 2; if (plColorBoxY tempHeight > this.Height) { plColorBoxY = plTool.Top - 2 - plColorBox.Height; } plColorBox.Top = plColorBoxY; } } //确定是否工具条上面有被选中的按钮 private bool HaveSelectedToolButton() { return btnRect.IsSelected || btnEllipse.IsSelected || btnArrow.IsSelected || btnBrush.IsSelected || btnText.IsSelected; } //清空选中的工具条上的工具 private void ClearToolBarBtnSelected() { btnRect.IsSelected = btnEllipse.IsSelected = btnArrow.IsSelected = btnBrush.IsSelected = btnText.IsSelected = false; } //设置历史图层 private void SetLayer() { if (this.IsDisposed) return; using (Graphics g = Graphics.FromImage(bmpLayerCurrent)) { g.DrawImage(bmpLayerShow, 0, 0); } Bitmap bmpTemp = bmpLayerCurrent.Clone() as Bitmap; historyLayer.Add(bmpTemp); } }}
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