这篇文章主要介绍“C#怎么实现带行数和标尺的RichTextBox”,在日常操作中,相信很多人在C#怎么实现带行数和标尺的RichTextBox问题上存在疑惑,小编查阅了各式资料,整理出简单好用的操作方法,希望对大家解答”C#怎么实现带行数和标尺的RichTextBox”的疑惑有所帮助!接下来,请跟着小编一起来学习吧!
public partial class GuageRichTextBox : UserControl { public GuageRichTextBox() { InitializeComponent(); richTextBox1.WordWrap = false; richTextBox1.Top = Distance_X; richTextBox1.Left = Distance_Y; richTextBox1.Width = this.Width - Distance_X - 2; richTextBox1.Height = this.Height - Distance_Y - 2; } #region 变量及常量 const int Distance_X = 30; //设置RichTextBox控件的X位置 const int Distance_Y = 30; //设置RichTextBox控件的Y位置 const int SpaceBetween = 3; //设置标尺的间距 public static float thisleft = 0; //设置控件的左边距 public static float StartBitH = 0; //记录横向滚动条的位置 public static float StartBitV = 0; //记录纵向滚动条的位置 const int Scale1 = 3; //设置刻度最短的线长 const int Scale5 = 6; //设置刻度为5时的线长 const int Scale10 = 9; //设置刻度为10是垢线长 public static float Degree = 0; //度数 public static float CodeSize = 1; //代码编号的宽度 #endregion #region 属性 [Browsable(true), Category("设置标尺控件"), Description("设置RichTextBox控件的相关属性")] //在“属性”窗口中显示DataStyle属性 public RichTextBox NRichTextBox { get { return richTextBox1; } } public enum Ruler { Graduation = 0, //刻度 Rule = 1, //尺子 } private bool TCodeShow = false; [Browsable(true), Category("设置标尺控件"), Description("是否在RichTextBox控件的前面添加代码的行号")] //在“属性”窗口中显示DataStyle属性 public bool CodeShow { get { return TCodeShow; } set { TCodeShow = value; this.Invalidate(); } } private Ruler TRulerStyle = Ruler.Graduation; [Browsable(true), Category("设置标尺控件"), Description("设置标尺样式:\nGraduation为刻度\nRule为尺子")] //在“属性”窗口中显示DataStyle属性 public Ruler RulerStyle { get { return TRulerStyle; } set { TRulerStyle = value; this.Invalidate(); } } public enum Unit { Cm = 0, //厘米 Pels = 1, //像素 } private Unit TUnitStyle = Unit.Cm; [Browsable(true), Category("设置标尺控件"), Description("设置标尺的单位:\nCm为厘米\nPels为像素")] //在“属性”窗口中显示DataStyle属性 public Unit UnitStyle { get { return TUnitStyle; } set { TUnitStyle = value; this.Invalidate(); } } #endregion #region 事件 private void GuageRichTextBox_Paint(object sender, PaintEventArgs e) { e.Graphics.DrawRectangle(new Pen(Color.DarkGray), 0, 0, this.Width - 1, this.Height - 1); //绘制外边框 if (CodeShow) //如查在文本框左边添加行号 { //获取行号的宽度 float tem_code = (float) StringSize( (Convert.ToInt32(CodeSize + (float) (richTextBox1.Height / (StringSize(CodeSize.ToString(), richTextBox1.Font, false))))).ToString(), this.Font, true); richTextBox1.Top = Distance_X; //设置控件的顶端距离 richTextBox1.Left = Distance_Y + (int) Math.Ceiling(tem_code); //设置控件的左端距离 richTextBox1.Width = this.Width - Distance_X - 2 - (int) Math.Ceiling(tem_code); //设置控件的宽度 richTextBox1.Height = this.Height - Distance_Y - 2; //设置控件高度 thisleft = Distance_Y + tem_code; //设置标尺的左端位置 } else { richTextBox1.Top = Distance_X; //设置控件的顶端距离 richTextBox1.Left = Distance_Y; //设置控件的左端距离 richTextBox1.Width = this.Width - Distance_X - 2; //设置控件的宽度 richTextBox1.Height = this.Height - Distance_Y - 2; //设置控件高度 thisleft = Distance_Y; //设置标尺的左端位置 } //绘制文本框的边框 e.Graphics.DrawRectangle(new Pen(Color.LightSteelBlue), richTextBox1.Location.X - 1, thisleft - 1, richTextBox1.Width + 1, richTextBox1.Height + 1); e.Graphics.FillRectangle(new SolidBrush(Color.Silver), 1, 1, this.Width - 2, Distance_Y - 2); //文本框的上边框 e.Graphics.FillRectangle(new SolidBrush(Color.Silver), 1, 1, Distance_X - 2, this.Height - 2); //文本框的左边框 e.Graphics.FillRectangle(new SolidBrush(Color.Gray), 3, 3, Distance_X - 7, Distance_Y - 8); //绘制左上角的方块边框 e.Graphics.DrawRectangle(new Pen(SystemColors.Control), 3, 3, Distance_X - 8, Distance_Y - 8); //绘制左上角的方块 if (RulerStyle == Ruler.Rule) //标尺 { //绘制上边的标尺背景 e.Graphics.FillRectangle(new SolidBrush(Color.Gray), thisleft - 3, 3, this.Width - (thisleft - 2), Distance_Y - 9); //绘制左上角的方块边框 e.Graphics.DrawLine(new Pen(SystemColors.Control), thisleft - 3, 3, this.Width - 2, 3); //绘制方块的上边线 e.Graphics.DrawLine(new Pen(SystemColors.Control), thisleft - 3, Distance_Y - 5, this.Width - 2, Distance_Y - 5); //绘制方块的下边线 e.Graphics.FillRectangle(new SolidBrush(Color.WhiteSmoke), thisleft - 2, 9, this.Width - (thisleft - 2) - 1, Distance_Y - 19); //绘制方块的中间块 //绘制左边的标尺背景 e.Graphics.FillRectangle(new SolidBrush(Color.Gray), 3, Distance_Y - 3, Distance_X - 7, this.Height - (Distance_Y - 3) - 2); //绘制左边的方块 e.Graphics.DrawLine(new Pen(SystemColors.Control), 3, Distance_Y - 3, 3, this.Height - 2); //绘制方块的左边线 e.Graphics.DrawLine(new Pen(SystemColors.Control), Distance_X - 5, Distance_Y - 3, Distance_X - 5, this.Height - 2); //绘制方块的右边线 e.Graphics.FillRectangle(new SolidBrush(Color.WhiteSmoke), 9, Distance_Y - 3, Distance_X - 19, this.Height - (Distance_Y - 3) - 2); //绘制方块的中间块 } int tem_temHeight = 0; string tem_value = ""; int tem_n = 0; int divide = 5; Pen tem_p = new Pen(new SolidBrush(Color.Black)); //横向刻度的设置 if (UnitStyle == Unit.Cm) //如果刻度的单位是厘米 Degree = e.Graphics.DpiX / 25.4F; //将像素转换成毫米 if (UnitStyle == Unit.Pels) //如果刻度的单位是像素 Degree = 10; //设置10像素为一个刻度 int tem_width = this.Width - 3; tem_n = (int) StartBitH; //记录横向滚动条的位置 if (tem_n != StartBitH) //如果横向滚动条的位置值为小数 StartBitH = (int) StartBitH; //对横向滚动条的位置进行取整 for (float i = 0; i < tem_width;) //在文本框的项端绘制标尺 { tem_temHeight = Scale1; //设置刻度线的最小长度 float j = (i + (int) StartBitH) / Degree; //获取刻度值 tem_value = ""; j = (int) j; //对刻度值进行取整 if (j % (divide * 2) == 0) //如果刻度值是10进位 { tem_temHeight = Scale10; //设置最长的刻度线 if (UnitStyle == Unit.Cm) //如果刻度的单位为厘米 tem_value = Convert.ToString(j / 10); //记录刻度值 if (UnitStyle == Unit.Pels) //如果刻度的单位为像素 tem_value = Convert.ToString((int) j * 10); //记录刻度值 } else if (j % divide == 0) //如果刻度值的进位为5 { tem_temHeight = Scale5; //设置刻度线为中等 } tem_p.Width = 1; if (RulerStyle == Ruler.Graduation) //如果是以刻度值进行测量 { //绘制刻度线 e.Graphics.DrawLine(tem_p, i + 1 + thisleft, SpaceBetween, i + 1 + thisleft, SpaceBetween + tem_temHeight); if (tem_value.Length > 0) //如果有刻度值 //绘制刻度值 ProtractString(e.Graphics, tem_value.Trim(), i + 1 + thisleft, SpaceBetween, i + 1 + thisleft, SpaceBetween + tem_temHeight, 0); } if (RulerStyle == Ruler.Rule) //如果是以标尺进行测量 { if (tem_value.Length > 0) //如果有刻度值 { e.Graphics.DrawLine(tem_p, i + 1 + thisleft, 4, i + 1 + thisleft, 7); //绘制顶端的刻度线 e.Graphics.DrawLine(tem_p, i + 1 + thisleft, Distance_Y - 9, i + 1 + thisleft, Distance_Y - 7); //绘制底端的刻度线 float tem_space = 3 + (Distance_X - 19F - 9F - StringSize(tem_value.Trim(), this.Font, false)) / 2F; //设置文本的横向位置 //绘制文本 ProtractString(e.Graphics, tem_value.Trim(), i + 1 + thisleft, (float) Math.Ceiling(tem_space), i + 1 + thisleft, (float) Math.Ceiling(tem_space) + tem_temHeight, 0); } } i += Degree; //累加刻度的宽度 } //纵向刻度的设置 if (UnitStyle == Unit.Cm) //如果刻度的单位是厘米 Degree = e.Graphics.DpiX / 25.4F; //将像素转换成毫米 if (UnitStyle == Unit.Pels) //如果刻度的单位是像素 Degree = 10; //刻度值设为10像素 int tem_height = this.Height - 3; tem_n = (int) StartBitV; //记录纵向滚动条的位置 if (tem_n != StartBitV) //如果纵向滚动条的位置为小数 StartBitV = (int) StartBitV; //对其进行取整 for (float i = 0; i < tem_height;) //在文本框的左端绘制标尺 { tem_temHeight = Scale1; //设置刻度线的最小值 float j = (i + (int) StartBitV) / Degree; //获取当前的刻度值 tem_value = ""; j = (int) j; //对刻度值进行取整 if (j % 10 == 0) //如果刻度值是10进位 { tem_temHeight = Scale10; //设置刻度线的长度为最长 if (UnitStyle == Unit.Cm) //如果刻度的单位是厘米 tem_value = Convert.ToString(j / 10); //获取厘米的刻度值 if (UnitStyle == Unit.Pels) //如果刻度的单位是像素 tem_value = Convert.ToString((int) j * 10); //获取像素的刻度值 } else if (j % 5 == 0) //如果刻度值是5进位 { tem_temHeight = Scale5; //设置刻度线的长度为中等 } tem_p.Width = 1; if (RulerStyle == Ruler.Graduation) //如果是以刻度值进行测量 { //绘制刻度线 e.Graphics.DrawLine(tem_p, SpaceBetween, i + 1 + Distance_Y, SpaceBetween + tem_temHeight, i + 1 + Distance_Y); if (tem_value.Length > 0) //如果有刻度值 //绘制刻度值 ProtractString(e.Graphics, tem_value.Trim(), SpaceBetween, i + 1 + Distance_Y, SpaceBetween + tem_temHeight, i + 1 + Distance_Y, 1); } if (RulerStyle == Ruler.Rule) //如果是以标尺进行测量 { if (tem_value.Length > 0) //如果有刻度值 { e.Graphics.DrawLine(tem_p, 4, i + 1 + Distance_Y, 7, i + 1 + Distance_Y); //绘制左端刻度线 e.Graphics.DrawLine(tem_p, Distance_Y - 9, i + 1 + Distance_Y, Distance_Y - 7, i + 1 + Distance_Y); //绘制右端刻度线 float tem_space = 3 + (Distance_X - 19F - 9F - StringSize(tem_value.Trim(), this.Font, false)) / 2F; //设置文本的纵向位置 //绘制文本 ProtractString(e.Graphics, tem_value.Trim(), (float) Math.Floor(tem_space), i + 1 + Distance_Y, (float) Math.Floor(tem_space) + tem_temHeight, i + 1 + Distance_Y, 1); } } i += Degree; //累加刻度值 } if (CodeShow) //如果显示行号 { //设置文本的高度 float tem_FontHeight = (float) (richTextBox1.Height / (StringSize(CodeSize.ToString(), richTextBox1.Font, false))); float tem_tep = richTextBox1.Top; //获取文本框的顶端位置 int tem_mark = 0; for (int i = 0; i < (int) tem_FontHeight; i++) //绘制行号 { tem_mark = i + (int) CodeSize; //设置代码编号的宽度 //绘制行号 e.Graphics.DrawString(tem_mark.ToString(), this.Font, new SolidBrush(Color.Red), new PointF(richTextBox1.Left - StringSize(tem_mark.ToString(), this.Font, true) - 2, tem_tep)); tem_tep = tem_tep + StringSize("懂", richTextBox1.Font, false); //设置下一个行号的X坐标值 } } } private void GuageRichTextBox_Resize(object sender, EventArgs e) { richTextBox1.Top = Distance_X; //设置控件的顶端位置 richTextBox1.Left = Distance_Y; //设置控件的左端位置 richTextBox1.Width = this.Width - Distance_X - 2; //设置控件的宽度 richTextBox1.Height = this.Height - Distance_Y - 2; //设置控件的高度 this.Invalidate(); } private void richTextBox1_HScroll(object sender, EventArgs e) { StartBitH = (int) (Math.Abs((float) richTextBox1.GetPositionFromCharIndex(0).X - 1)); //检索控件横向内指定字符索引处的位置 this.Invalidate(); } private void richTextBox1_VScroll(object sender, EventArgs e) { StartBitV = (int) (Math.Abs((float) richTextBox1.GetPositionFromCharIndex(0).Y - 1)); //检索控件纵向内指定字符索引处的位置 if (CodeShow) //如果显示行号 CodeSize = (int) Math.Abs((richTextBox1.GetPositionFromCharIndex(0).Y / StringSize("懂", richTextBox1.Font, false))); //设置行号的高度 this.Invalidate(); } #endregion #region 方法 /// <summary> /// 在指定的位置绘制文本信息 /// </summary> /// <param e="Graphics">封装一个绘图的类对象</param> /// <param str="string">文本信息</param> /// <param x1="float">左上角x坐标</param> /// <param y1="float">左上角y坐标</param> /// <param x2="float">右下角x坐标</param> /// <param y2="float">右下角y坐标</param> /// <param n="float">标识,判断是在横向标尺上绘制文字还是在纵向标尺上绘制文字</param> public void ProtractString(Graphics e, string str, float x1, float y1, float x2, float y2, float n) { float TitWidth = StringSize(str, this.Font, true); //获取字符串的宽度 if (n == 0) //在横向标尺上绘制文字 e.DrawString(str, this.Font, new SolidBrush(Color.Black), new PointF(x2 - TitWidth / 2, y2 + 1)); else //在纵向标尺上绘制文字 { StringFormat drawFormat = new StringFormat(); //实例化StringFormat类 drawFormat.FormatFlags = StringFormatFlags.DirectionVertical; //设置文本为垂直对齐 //绘制指定的文本 e.DrawString(str, this.Font, new SolidBrush(Color.Black), new PointF(x2 + 1, y2 - TitWidth / 2), drawFormat); } } /// <summary> /// 获取文本的高度或宽度 /// </summary> /// <param str="string">文本信息</param> /// <param font="Font">字体样式</param> /// <param n="bool">标识,判断返回的是高度还是宽度</param> public float StringSize(string str, Font font, bool n) //n==true为width { Graphics TitG = this.CreateGraphics(); //创建Graphics类对象 SizeF TitSize = TitG.MeasureString(str, font); //将绘制的字符串进行格式化 float TitWidth = TitSize.Width; //获取字符串的宽度 float TitHeight = TitSize.Height; //获取字符串的高度 if (n) return TitWidth; //返回文本信息的宽度 else return TitHeight; //返回文本信息的高度 } #endregion }
到此,关于“C#怎么实现带行数和标尺的RichTextBox”的学习就结束了,希望能够解决大家的疑惑。理论与实践的搭配能更好的帮助大家学习,快去试试吧!若想继续学习更多相关知识,请继续关注亿速云网站,小编会继续努力为大家带来更多实用的文章!
免责声明:本站发布的内容(图片、视频和文字)以原创、转载和分享为主,文章观点不代表本网站立场,如果涉及侵权请联系站长邮箱:is@yisu.com进行举报,并提供相关证据,一经查实,将立刻删除涉嫌侵权内容。