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🥭本文内容：使用C#实现VS窗体应用——画图板
📚 ** ps ** ： 阅读文章如果有问题或者疑惑，欢迎在评论区提问或指出。
目录
一. 界面
二. 绘制图形
三. 修改颜色
四. 铅笔工具
五. 颜料桶
六. 橡皮擦
七. 图像彩色
八. 撤销
九. 重做
十. 文件保存
十一. 文件打开
十二. 套索操作(比较粗糙)
十三. 美白(由RGB更改实现)
十四. 透明(由透明度变化实现)：
十五. 源码分享
主要有十三个功能模块：1、绘制图形功能 2、编辑颜色功能 3、显示颜色值功能 4、铅笔工具 5、颜料桶填充功能 6、橡皮擦工具功能7、撤销功能8、重做操作功能9、保存文件功能10、打开文件功能11、套索选中像素功能12、选中区域美白功能13、修改像素透明度功能
一. 界面
主要代码：
namespace 画图板程序
{
partial class Form1
{
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(Form1));
btnPen = new Button();
btnPigmentBucket = new Button();
button3 = new Button();
btnEraser = new Button();
btnColorExtractor = new Button();
button6 = new Button();
trackBarWidth = new TrackBar();
pictureBox1 = new PictureBox();
tableLayoutPanel1 = new TableLayoutPanel();
groupBox1 = new GroupBox();
groupBox2 = new GroupBox();
comboBox1 = new ComboBox();
btnDrawEllipse = new Button();
panel8 = new Panel();
btnDrawLine = new Button();
btnDrawDiamond = new Button();
btnDrawRectangle = new Button();
btnDrawTriangle = new Button();
btnDrawHexagon = new Button();
btnDrawPentagon = new Button();
btnDrawCircle = new Button();
panelColor = new Panel();
btnYellow = new TableLayoutPanel();
label1 = new Label();
tableLayoutPanel4 = new TableLayoutPanel();
rbtnBlack = new RoundButton();
rbtnWhite = new RoundButton();
rbtnGray = new RoundButton();
rbtnGreen = new RoundButton();
rbtnRed = new RoundButton();
rbtnLightBlue = new RoundButton();
rBtnOrange = new RoundButton();
rbtnBlue = new RoundButton();
rbtnYellow = new RoundButton();
rbtnPurple = new RoundButton();
panel1 = new Panel();
btnSelectColor = new RoundButton();
panel6 = new Panel();
panel7 = new Panel();
tableLayoutPanel3 = new TableLayoutPanel();
labelColor2 = new Label();
panelCurColor1 = new Panel();
rbtnCurColor2 = new RoundButton();
panelCurColor2 = new Panel();
rbtnCurColor = new RoundButton();
labelColor1 = new Label();
groupBox3 = new GroupBox();
button5 = new Button();
button2 = new Button();
button1 = new Button();
button4 = new Button();
btnChangeOpacity = new Button();
btnWhiten = new Button();
btnLasso = new Button();
panelBoundaryLine = new Panel();
groupBox4 = new GroupBox();
panel10 = new Panel();
btnRedo = new Button();
btnUndo = new Button();
roundButton11 = new RoundButton();
colorDialog1 = new ColorDialog();
panelDrawingArea = new Panel();
tableLayoutPanel2 = new TableLayoutPanel();
menuStrip1 = new MenuStrip();
文件ToolStripMenuItem = new ToolStripMenuItem();
导入ToolStripMenuItem = new ToolStripMenuItem();
导出ToolStripMenuItem = new ToolStripMenuItem();
编辑ToolStripMenuItem = new ToolStripMenuItem();
复制ToolStripMenuItem = new ToolStripMenuItem();
剪切CtrlXToolStripMenuItem = new ToolStripMenuItem();
粘贴CtrlvToolStripMenuItem = new ToolStripMenuItem();
旋转ToolStripMenuItem = new ToolStripMenuItem();
顺时针旋转90ToolStripMenuItem = new ToolStripMenuItem();
顺时针旋转180ToolStripMenuItem = new ToolStripMenuItem();
逆时针旋转90ToolStripMenuItem = new ToolStripMenuItem();
逆时针旋转180ToolStripMenuItem = new ToolStripMenuItem();
查看ToolStripMenuItem = new ToolStripMenuItem();
保存ToolStripMenuItem = new ToolStripMenuItem();
panel2 = new Panel();
panel5 = new Panel();
buttonSizeFitWindow = new Button();
comboBoxCanvasSize = new ComboBox();
trackBarCanvasSize = new TrackBar();
btnBottomShrink = new Button();
btnBottomEnlarge = new Button();
panelButtomLeft2 = new Panel();
panel4 = new Panel();
labelColorB = new Label();
panelB = new Panel();
labelColorG = new Label();
label2 = new Label();
labelColorR = new Label();
panelG = new Panel();
panelR = new Panel();
panelButtomLeft1 = new Panel();
panel3 = new Panel();
labelYShow = new Label();
labelY = new Label();
labelXShow = new Label();
labelCoordinate = new Label();
labelX = new Label();
((System.ComponentModel.ISupportInitialize)trackBarWidth).BeginInit();
((System.ComponentModel.ISupportInitialize)pictureBox1).BeginInit();
tableLayoutPanel1.SuspendLayout();
groupBox1.SuspendLayout();
groupBox2.SuspendLayout();
panelColor.SuspendLayout();
btnYellow.SuspendLayout();
tableLayoutPanel4.SuspendLayout();
panel1.SuspendLayout();
panel6.SuspendLayout();
tableLayoutPanel3.SuspendLayout();
panelCurColor1.SuspendLayout();
panelCurColor2.SuspendLayout();
groupBox3.SuspendLayout();
groupBox4.SuspendLayout();
panelDrawingArea.SuspendLayout();
tableLayoutPanel2.SuspendLayout();
menuStrip1.SuspendLayout();
panel2.SuspendLayout();
panel5.SuspendLayout();
((System.ComponentModel.ISupportInitialize)trackBarCanvasSize).BeginInit();
panelButtomLeft2.SuspendLayout();
panelButtomLeft1.SuspendLayout();
SuspendLayout();
//
// btnPen
//
btnPen.Image = Properties.Resources.qianbi2;
btnPen.Location = new Point(6, 30);
btnPen.Name = "btnPen";
btnPen.Size = new Size(54, 50);
btnPen.TabIndex = 0;
btnPen.UseVisualStyleBackColor = true;
btnPen.Click += BtnStartDrawing_Click;
//
// btnPigmentBucket
//
btnPigmentBucket.Image = (Image)resources.GetObject("btnPigmentBucket.Image");
btnPigmentBucket.Location = new Point(80, 30);
btnPigmentBucket.Name = "btnPigmentBucket";
btnPigmentBucket.Size = new Size(54, 50);
btnPigmentBucket.TabIndex = 1;
btnPigmentBucket.UseVisualStyleBackColor = true;
btnPigmentBucket.Click += button2_Click;
//
// button3
//
button3.Image = (Image)resources.GetObject("button3.Image");
button3.Location = new Point(151, 30);
button3.Name = "button3";
button3.Size = new Size(54, 50);
button3.TabIndex = 2;
button3.UseVisualStyleBackColor = true;
button3.Click += button3_Click;
//
// btnEraser
//
btnEraser.Image = (Image)resources.GetObject("btnEraser.Image");
btnEraser.Location = new Point(6, 88);
btnEraser.Name = "btnEraser";
btnEraser.Size = new Size(54, 50);
btnEraser.TabIndex = 3;
btnEraser.UseVisualStyleBackColor = true;
btnEraser.Click += BtnEraser_Click;
//
// btnColorExtractor
//
btnColorExtractor.Image = (Image)resources.GetObject("btnColorExtractor.Image");
btnColorExtractor.Location = new Point(80, 88);
btnColorExtractor.Name = "btnColorExtractor";
btnColorExtractor.Size = new Size(54, 50);
btnColorExtractor.TabIndex = 4;
btnColorExtractor.UseVisualStyleBackColor = true;
btnColorExtractor.Click += btnColorExtractor_Click;
//
// button6
//
button6.Image = Properties.Resources.fangdajing1;
button6.Location = new Point(151, 88);
button6.Name = "button6";
button6.Size = new Size(54, 50);
button6.TabIndex = 5;
button6.UseVisualStyleBackColor = true;
button6.Click += button6_Click;
//
// trackBarWidth
//
trackBarWidth.BackColor = Color.FromArgb(192, 192, 255);
trackBarWidth.Location = new Point(3, 37);
trackBarWidth.Name = "trackBarWidth";
trackBarWidth.Orientation = Orientation.Vertical;
trackBarWidth.Size = new Size(33, 264);
trackBarWidth.TabIndex = 8;
trackBarWidth.Scroll += TrackBarWidth_Scroll;
//
// pictureBox1
//
pictureBox1.BackColor = Color.FromArgb(192, 192, 255);
pictureBox1.Image = (Image)resources.GetObject("pictureBox1.Image");
pictureBox1.Location = new Point(3, 3);
pictureBox1.Name = "pictureBox1";
pictureBox1.Size = new Size(31, 28);
pictureBox1.TabIndex = 9;
pictureBox1.TabStop = false;
//
// tableLayoutPanel1
//
tableLayoutPanel1.ColumnCount = 6;
tableLayoutPanel1.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 22.58F));
tableLayoutPanel1.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 14.29F));
tableLayoutPanel1.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 21.29F));
tableLayoutPanel1.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 24.29F));
tableLayoutPanel1.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 14.29F));
tableLayoutPanel1.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 3.29F));
tableLayoutPanel1.Controls.Add(groupBox1, 1, 0);
tableLayoutPanel1.Controls.Add(groupBox2, 2, 0);
tableLayoutPanel1.Controls.Add(panelColor, 3, 0);
tableLayoutPanel1.Controls.Add(groupBox3, 0, 0);
tableLayoutPanel1.Controls.Add(groupBox4, 4, 0);
tableLayoutPanel1.Dock = DockStyle.Top;
tableLayoutPanel1.Location = new Point(0, 32);
tableLayoutPanel1.Name = "tableLayoutPanel1";
tableLayoutPanel1.RowCount = 1;
tableLayoutPanel1.RowStyles.Add(new RowStyle(SizeType.Percent, 50F));
tableLayoutPanel1.Size = new Size(2046, 147);
tableLayoutPanel1.TabIndex = 10;
tableLayoutPanel1.Paint += tableLayoutPanel1_Paint_1;
//
// groupBox1
//
groupBox1.Controls.Add(button6);
groupBox1.Controls.Add(btnEraser);
groupBox1.Controls.Add(button3);
groupBox1.Controls.Add(btnColorExtractor);
groupBox1.Controls.Add(btnPen);
groupBox1.Controls.Add(btnPigmentBucket);
groupBox1.Location = new Point(464, 3);
groupBox1.Name = "groupBox1";
groupBox1.Size = new Size(216, 141);
groupBox1.TabIndex = 6;
groupBox1.TabStop = false;
groupBox1.Text = "工具";
//
// groupBox2
//
groupBox2.BackColor = Color.FromArgb(192, 192, 255);
groupBox2.Controls.Add(comboBox1);
groupBox2.Controls.Add(btnDrawEllipse);
groupBox2.Controls.Add(panel8);
groupBox2.Controls.Add(btnDrawLine);
groupBox2.Controls.Add(btnDrawDiamond);
groupBox2.Controls.Add(btnDrawRectangle);
groupBox2.Controls.Add(btnDrawTriangle);
groupBox2.Controls.Add(btnDrawHexagon);
groupBox2.Controls.Add(btnDrawPentagon);
groupBox2.Controls.Add(btnDrawCircle);
groupBox2.Location = new Point(756, 3);
groupBox2.Name = "groupBox2";
groupBox2.Size = new Size(429, 141);
groupBox2.TabIndex = 7;
groupBox2.TabStop = false;
groupBox2.Text = "形状";
//
// comboBox1
//
comboBox1.DropDownStyle = ComboBoxStyle.DropDownList;
comboBox1.FormattingEnabled = true;
comboBox1.Location = new Point(286, 29);
comboBox1.Name = "comboBox1";
comboBox1.Size = new Size(120, 32);
comboBox1.TabIndex = 8;
comboBox1.SelectedIndexChanged += comboBox1_SelectedIndexChanged;
//
// btnDrawEllipse
//
btnDrawEllipse.Image = Properties.Resources.ellipse1;
btnDrawEllipse.Location = new Point(30, 86);
btnDrawEllipse.Name = "btnDrawEllipse";
btnDrawEllipse.Size = new Size(52, 40);
btnDrawEllipse.TabIndex = 0;
btnDrawEllipse.UseVisualStyleBackColor = true;
btnDrawEllipse.Click += btnDrawEllipse_Click;
//
// panel8
//
panel8.BackColor = Color.Gray;
panel8.Location = new Point(265, 18);
panel8.Name = "panel8";
panel8.Size = new Size(1, 116);
panel8.TabIndex = 12;
//
// btnDrawLine
//
btnDrawLine.Image = Properties.Resources.line1;
btnDrawLine.Location = new Point(30, 40);
btnDrawLine.Name = "btnDrawLine";
btnDrawLine.Size = new Size(52, 40);
btnDrawLine.TabIndex = 2;
btnDrawLine.UseVisualStyleBackColor = true;
btnDrawLine.Click += btnDrawLine_Click;
//
// btnDrawDiamond
//
btnDrawDiamond.Image = Properties.Resources.tubiao1;
btnDrawDiamond.Location = new Point(204, 86);
btnDrawDiamond.Name = "btnDrawDiamond";
btnDrawDiamond.Size = new Size(52, 40);
btnDrawDiamond.TabIndex = 7;
btnDrawDiamond.UseVisualStyleBackColor = true;
btnDrawDiamond.Click += btnDrawDiamond_Click;
//
// btnDrawRectangle
//
btnDrawRectangle.Image = Properties.Resources.juxing1;
btnDrawRectangle.Location = new Point(146, 40);
btnDrawRectangle.Name = "btnDrawRectangle";
btnDrawRectangle.Size = new Size(52, 40);
btnDrawRectangle.TabIndex = 1;
btnDrawRectangle.UseVisualStyleBackColor = true;
//
// btnDrawTriangle
//
btnDrawTriangle.Image = Properties.Resources.xingzhuang_sanjiaoxing1;
btnDrawTriangle.Location = new Point(88, 40);
btnDrawTriangle.Name = "btnDrawTriangle";
btnDrawTriangle.Size = new Size(52, 40);
btnDrawTriangle.TabIndex = 6;
btnDrawTriangle.UseVisualStyleBackColor = true;
btnDrawTriangle.Click += btnDrawTriangle_Click;
//
// btnDrawHexagon
//
btnDrawHexagon.Image = Properties.Resources.tx_liubianxing1;
btnDrawHexagon.Location = new Point(146, 86);
btnDrawHexagon.Name = "btnDrawHexagon";
btnDrawHexagon.Size = new Size(52, 40);
btnDrawHexagon.TabIndex = 5;
btnDrawHexagon.UseVisualStyleBackColor = true;
btnDrawHexagon.Click += btnDrawHexagon_Click;
//
// btnDrawPentagon
//
btnDrawPentagon.Image = Properties.Resources.pentagon_1;
btnDrawPentagon.Location = new Point(88, 86);
btnDrawPentagon.Name = "btnDrawPentagon";
btnDrawPentagon.Size = new Size(52, 40);
btnDrawPentagon.TabIndex = 3;
btnDrawPentagon.UseVisualStyleBackColor = true;
btnDrawPentagon.Click += btnDrawPentagon_Click;
//
// btnDrawCircle
//
btnDrawCircle.Image = Properties.Resources.radio_on1;
btnDrawCircle.Location = new Point(204, 40);
btnDrawCircle.Name = "btnDrawCircle";
btnDrawCircle.Size = new Size(52, 40);
btnDrawCircle.TabIndex = 4;
btnDrawCircle.UseVisualStyleBackColor = true;
btnDrawCircle.Click += btnDrawCircle_Click;
//
// panelColor
//
panelColor.BorderStyle = BorderStyle.FixedSingle;
panelColor.Controls.Add(btnYellow);
panelColor.Dock = DockStyle.Fill;
panelColor.Location = new Point(1191, 3);
panelColor.Name = "panelColor";
panelColor.Size = new Size(490, 141);
panelColor.TabIndex = 10;
panelColor.Paint += panelColor_Paint;
//
// btnYellow
//
btnYellow.ColumnCount = 2;
btnYellow.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 25.2049179F));
btnYellow.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 74.79508F));
btnYellow.Controls.Add(label1, 1, 1);
btnYellow.Controls.Add(tableLayoutPanel4, 2, 0);
btnYellow.Controls.Add(panel1, 0, 1);
btnYellow.Controls.Add(panel6, 0, 0);
btnYellow.Dock = DockStyle.Fill;
btnYellow.ForeColor = SystemColors.ControlText;
btnYellow.Location = new Point(0, 0);
btnYellow.Name = "btnYellow";
btnYellow.RowCount = 2;
btnYellow.RowStyles.Add(new RowStyle(SizeType.Percent, 63.3802834F));
btnYellow.RowStyles.Add(new RowStyle(SizeType.Percent, 36.6197166F));
btnYellow.RowStyles.Add(new RowStyle(SizeType.Absolute, 20F));
btnYellow.Size = new Size(488, 139);
btnYellow.TabIndex = 8;
btnYellow.Paint += btnYellow_Paint;
//
// label1
//
label1.AutoSize = true;
label1.Dock = DockStyle.Fill;
label1.Location = new Point(126, 88);
label1.Name = "label1";
label1.Size = new Size(359, 51);
label1.TabIndex = 0;
label1.Text = "选择";
label1.TextAlign = ContentAlignment.MiddleCenter;
//
// tableLayoutPanel4
//
tableLayoutPanel4.BackColor = Color.FromArgb(192, 192, 255);
tableLayoutPanel4.ColumnCount = 5;
tableLayoutPanel4.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 20F));
tableLayoutPanel4.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 20F));
tableLayoutPanel4.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 20F));
tableLayoutPanel4.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 20F));
tableLayoutPanel4.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 20F));
tableLayoutPanel4.ColumnStyles.Add(new ColumnStyle(SizeType.Absolute, 20F));
tableLayoutPanel4.Controls.Add(rbtnBlack, 0, 0);
tableLayoutPanel4.Controls.Add(rbtnWhite, 0, 1);
tableLayoutPanel4.Controls.Add(rbtnGray, 1, 0);
tableLayoutPanel4.Controls.Add(rbtnGreen, 1, 1);
tableLayoutPanel4.Controls.Add(rbtnRed, 2, 0);
tableLayoutPanel4.Controls.Add(rbtnLightBlue, 2, 1);
tableLayoutPanel4.Controls.Add(rBtnOrange, 3, 0);
tableLayoutPanel4.Controls.Add(rbtnBlue, 3, 1);
tableLayoutPanel4.Controls.Add(rbtnYellow, 4, 0);
tableLayoutPanel4.Controls.Add(rbtnPurple, 4, 1);
tableLayoutPanel4.Location = new Point(126, 3);
tableLayoutPanel4.Name = "tableLayoutPanel4";
tableLayoutPanel4.RowCount = 2;
tableLayoutPanel4.RowStyles.Add(new RowStyle(SizeType.Percent, 50F));
tableLayoutPanel4.RowStyles.Add(new RowStyle(SizeType.Percent, 50F));
tableLayoutPanel4.RowStyles.Add(new RowStyle(SizeType.Absolute, 20F));
tableLayoutPanel4.Size = new Size(359, 82);
tableLayoutPanel4.TabIndex = 2;
tableLayoutPanel4.Paint += tableLayoutPanel4_Paint;
//
// rbtnBlack
//
rbtnBlack.BackColor = Color.Black;
rbtnBlack.BorderColor = Color.White;
rbtnBlack.Dock = DockStyle.Fill;
rbtnBlack.FlatAppearance.BorderSize = 0;
rbtnBlack.FlatStyle = FlatStyle.Flat;
rbtnBlack.Location = new Point(3, 3);
rbtnBlack.Name = "rbtnBlack";
rbtnBlack.Size = new Size(35, 35);
rbtnBlack.TabIndex = 0;
rbtnBlack.UseVisualStyleBackColor = false;
//
// rbtnWhite
//
rbtnWhite.AutoSize = true;
rbtnWhite.BackColor = Color.White;
rbtnWhite.BorderColor = Color.White;
rbtnWhite.Dock = DockStyle.Fill;
rbtnWhite.FlatAppearance.BorderSize = 0;
rbtnWhite.FlatStyle = FlatStyle.Flat;
rbtnWhite.Location = new Point(3, 44);
rbtnWhite.Name = "rbtnWhite";
rbtnWhite.Size = new Size(35, 35);
rbtnWhite.TabIndex = 1;
rbtnWhite.UseVisualStyleBackColor = false;
//
// rbtnGray
//
rbtnGray.BackColor = Color.Silver;
rbtnGray.BorderColor = Color.White;
rbtnGray.Dock = DockStyle.Fill;
rbtnGray.FlatAppearance.BorderSize = 0;
rbtnGray.FlatStyle = FlatStyle.Flat;
rbtnGray.Location = new Point(74, 3);
rbtnGray.Name = "rbtnGray";
rbtnGray.Size = new Size(35, 35);
rbtnGray.TabIndex = 2;
rbtnGray.UseVisualStyleBackColor = false;
//
// rbtnGreen
//
rbtnGreen.BackColor = Color.Lime;
rbtnGreen.BorderColor = Color.White;
rbtnGreen.Dock = DockStyle.Fill;
rbtnGreen.FlatAppearance.BorderSize = 0;
rbtnGreen.FlatStyle = FlatStyle.Flat;
rbtnGreen.Location = new Point(74, 44);
rbtnGreen.Name = "rbtnGreen";
rbtnGreen.Size = new Size(35, 35);
rbtnGreen.TabIndex = 3;
rbtnGreen.UseVisualStyleBackColor = false;
//
// rbtnRed
//
rbtnRed.BackColor = Color.Red;
rbtnRed.BorderColor = Color.White;
rbtnRed.Dock = DockStyle.Fill;
rbtnRed.FlatAppearance.BorderSize = 0;
rbtnRed.FlatStyle = FlatStyle.Flat;
rbtnRed.Location = new Point(145, 3);
rbtnRed.Name = "rbtnRed";
rbtnRed.Size = new Size(35, 35);
rbtnRed.TabIndex = 4;
rbtnRed.UseVisualStyleBackColor = false;
//
// rbtnLightBlue
//
rbtnLightBlue.BackColor = Color.Cyan;
rbtnLightBlue.BorderColor = Color.White;
rbtnLightBlue.Dock = DockStyle.Fill;
rbtnLightBlue.FlatAppearance.BorderSize = 0;
rbtnLightBlue.FlatStyle = FlatStyle.Flat;
rbtnLightBlue.Location = new Point(145, 44);
rbtnLightBlue.Name = "rbtnLightBlue";
rbtnLightBlue.Size = new Size(35, 35);
rbtnLightBlue.TabIndex = 5;
rbtnLightBlue.UseVisualStyleBackColor = false;
//
// rBtnOrange
//
rBtnOrange.BackColor = Color.FromArgb(255, 128, 0);
rBtnOrange.BorderColor = Color.White;
rBtnOrange.Dock = DockStyle.Fill;
rBtnOrange.FlatAppearance.BorderSize = 0;
rBtnOrange.FlatStyle = FlatStyle.Flat;
rBtnOrange.Location = new Point(216, 3);
rBtnOrange.Name = "rBtnOrange";
rBtnOrange.Size = new Size(35, 35);
rBtnOrange.TabIndex = 6;
rBtnOrange.UseVisualStyleBackColor = false;
//
// rbtnBlue
//
rbtnBlue.BackColor = Color.Blue;
rbtnBlue.BorderColor = Color.White;
rbtnBlue.Dock = DockStyle.Fill;
rbtnBlue.FlatAppearance.BorderSize = 0;
rbtnBlue.FlatStyle = FlatStyle.Flat;
rbtnBlue.Location = new Point(216, 44);
rbtnBlue.Name = "rbtnBlue";
rbtnBlue.Size = new Size(35, 35);
rbtnBlue.TabIndex = 7;
rbtnBlue.UseVisualStyleBackColor = false;
//
// rbtnYellow
//
rbtnYellow.BackColor = Color.Yellow;
rbtnYellow.BorderColor = Color.White;
rbtnYellow.Dock = DockStyle.Fill;
rbtnYellow.FlatAppearance.BorderSize = 0;
rbtnYellow.FlatStyle = FlatStyle.Flat;
rbtnYellow.Location = new Point(287, 3);
rbtnYellow.Name = "rbtnYellow";
rbtnYellow.Size = new Size(35, 35);
rbtnYellow.TabIndex = 8;
rbtnYellow.UseVisualStyleBackColor = false;
//
// rbtnPurple
//
rbtnPurple.BackColor = Color.Fuchsia;
rbtnPurple.BorderColor = Color.White;
rbtnPurple.Dock = DockStyle.Fill;
rbtnPurple.FlatAppearance.BorderSize = 0;
rbtnPurple.FlatStyle = FlatStyle.Flat;
rbtnPurple.Location = new Point(287, 44);
rbtnPurple.Name = "rbtnPurple";
rbtnPurple.Size = new Size(35, 35);
rbtnPurple.TabIndex = 9;
rbtnPurple.UseVisualStyleBackColor = false;
//
// panel1
//
panel1.Controls.Add(btnSelectColor);
panel1.Dock = DockStyle.Fill;
panel1.Location = new Point(3, 91);
panel1.Name = "panel1";
panel1.Size = new Size(117, 45);
panel1.TabIndex = 3;
//
// btnSelectColor
//
btnSelectColor.BackColor = Color.Transparent;
btnSelectColor.BorderColor = Color.White;
btnSelectColor.FlatAppearance.BorderSize = 0;
btnSelectColor.FlatStyle = FlatStyle.Flat;
btnSelectColor.Image = (Image)resources.GetObject("btnSelectColor.Image");
btnSelectColor.Location = new Point(39, 1);
btnSelectColor.Name = "btnSelectColor";
btnSelectColor.Size = new Size(44, 44);
btnSelectColor.TabIndex = 0;
btnSelectColor.UseVisualStyleBackColor = false;
btnSelectColor.Click += btnSelectColor_Click;
//
// panel6
//
panel6.Controls.Add(panel7);
panel6.Controls.Add(tableLayoutPanel3);
panel6.Location = new Point(3, 3);
panel6.Name = "panel6";
panel6.Size = new Size(117, 82);
panel6.TabIndex = 4;
//
// panel7
//
panel7.BackColor = Color.Black;
panel7.Dock = DockStyle.Right;
panel7.Location = new Point(116, 0);
panel7.Name = "panel7";
panel7.Size = new Size(1, 82);
panel7.TabIndex = 13;
//
// tableLayoutPanel3
//
tableLayoutPanel3.ColumnCount = 2;
tableLayoutPanel3.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 50F));
tableLayoutPanel3.ColumnStyles.Add(new ColumnStyle(SizeType.Absolute, 49F));
tableLayoutPanel3.Controls.Add(labelColor2, 0, 1);
tableLayoutPanel3.Controls.Add(panelCurColor1, 1, 1);
tableLayoutPanel3.Controls.Add(panelCurColor2, 1, 0);
tableLayoutPanel3.Controls.Add(labelColor1, 0, 0);
tableLayoutPanel3.Location = new Point(-3, 0);
tableLayoutPanel3.Name = "tableLayoutPanel3";
tableLayoutPanel3.RowCount = 2;
tableLayoutPanel3.RowStyles.Add(new RowStyle(SizeType.Percent, 50F));
tableLayoutPanel3.RowStyles.Add(new RowStyle(SizeType.Percent, 50F));
tableLayoutPanel3.Size = new Size(123, 86);
tableLayoutPanel3.TabIndex = 1;
//
// labelColor2
//
labelColor2.AutoSize = true;
labelColor2.Dock = DockStyle.Fill;
labelColor2.Location = new Point(3, 43);
labelColor2.Name = "labelColor2";
labelColor2.Size = new Size(68, 43);
labelColor2.TabIndex = 12;
labelColor2.Text = "颜色2:";
labelColor2.TextAlign = ContentAlignment.MiddleCenter;
//
// panelCurColor1
//
panelCurColor1.Controls.Add(rbtnCurColor2);
panelCurColor1.Location = new Point(77, 46);
panelCurColor1.Name = "panelCurColor1";
panelCurColor1.Size = new Size(37, 37);
panelCurColor1.TabIndex = 0;
//
// rbtnCurColor2
//
rbtnCurColor2.AutoSize = true;
rbtnCurColor2.BackColor = Color.FromArgb(255, 192, 255);
rbtnCurColor2.BorderColor = Color.White;
rbtnCurColor2.Dock = DockStyle.Fill;
rbtnCurColor2.FlatAppearance.BorderSize = 0;
rbtnCurColor2.FlatStyle = FlatStyle.Flat;
rbtnCurColor2.Location = new Point(0, 0);
rbtnCurColor2.Name = "rbtnCurColor2";
rbtnCurColor2.Size = new Size(37, 37);
rbtnCurColor2.TabIndex = 2;
rbtnCurColor2.UseVisualStyleBackColor = false;
rbtnCurColor2.Click += rbtnCurColor_Click2_Click;
//
// panelCurColor2
//
panelCurColor2.Controls.Add(rbtnCurColor);
panelCurColor2.Location = new Point(77, 3);
panelCurColor2.Name = "panelCurColor2";
panelCurColor2.Size = new Size(37, 37);
panelCurColor2.TabIndex = 1;
//
// rbtnCurColor
//
rbtnCurColor.BackColor = Color.Black;
rbtnCurColor.BorderColor = Color.White;
rbtnCurColor.Dock = DockStyle.Fill;
rbtnCurColor.FlatAppearance.BorderSize = 0;
rbtnCurColor.FlatStyle = FlatStyle.Flat;
rbtnCurColor.Location = new Point(0, 0);
rbtnCurColor.Name = "rbtnCurColor";
rbtnCurColor.Size = new Size(37, 37);
rbtnCurColor.TabIndex = 1;
rbtnCurColor.UseVisualStyleBackColor = false;
rbtnCurColor.Click += rbtnCurColor_Click;
//
// labelColor1
//
labelColor1.AutoSize = true;
labelColor1.Dock = DockStyle.Fill;
labelColor1.Location = new Point(3, 0);
labelColor1.Name = "labelColor1";
labelColor1.Size = new Size(68, 43);
labelColor1.TabIndex = 11;
labelColor1.Text = "颜色1:";
labelColor1.TextAlign = ContentAlignment.MiddleCenter;
labelColor1.Click += labelColor1_Click;
//
// groupBox3
//
groupBox3.Controls.Add(button5);
groupBox3.Controls.Add(button2);
groupBox3.Controls.Add(button1);
groupBox3.Controls.Add(button4);
groupBox3.Controls.Add(btnChangeOpacity);
groupBox3.Controls.Add(btnWhiten);
groupBox3.Controls.Add(btnLasso);
groupBox3.Controls.Add(panelBoundaryLine);
groupBox3.Dock = DockStyle.Left;
groupBox3.Location = new Point(3, 3);
groupBox3.Name = "groupBox3";
groupBox3.Size = new Size(455, 141);
groupBox3.TabIndex = 11;
groupBox3.TabStop = false;
groupBox3.Text = "套索";
//
// button5
//
button5.Image = (Image)resources.GetObject("button5.Image");
button5.Location = new Point(364, 82);
button5.Name = "button5";
button5.Size = new Size(73, 43);
button5.TabIndex = 14;
button5.UseVisualStyleBackColor = true;
button5.Click += button5_Click_1;
//
// button2
//
button2.Image = (Image)resources.GetObject("button2.Image");
button2.Location = new Point(276, 83);
button2.Name = "button2";
button2.Size = new Size(73, 43);
button2.TabIndex = 13;
button2.UseVisualStyleBackColor = true;
//
// button1
//
button1.Image = (Image)resources.GetObject("button1.Image");
button1.Location = new Point(364, 24);
button1.Name = "button1";
button1.Size = new Size(73, 43);
button1.TabIndex = 12;
button1.UseVisualStyleBackColor = true;
button1.Click += button1_Click_2;
//
// button4
//
button4.Image = (Image)resources.GetObject("button4.Image");
button4.Location = new Point(276, 24);
button4.Name = "button4";
button4.Size = new Size(73, 43);
button4.TabIndex = 11;
button4.UseVisualStyleBackColor = true;
button4.Click += button4_Click_1;
//
// btnChangeOpacity
//
btnChangeOpacity.Image = (Image)resources.GetObject("btnChangeOpacity.Image");
btnChangeOpacity.Location = new Point(159, 82);
btnChangeOpacity.Name = "btnChangeOpacity";
btnChangeOpacity.Size = new Size(80, 54);
btnChangeOpacity.TabIndex = 2;
btnChangeOpacity.UseVisualStyleBackColor = true;
btnChangeOpacity.Click += btnChangeOpacity_Click;
//
// btnWhiten
//
btnWhiten.Image = (Image)resources.GetObject("btnWhiten.Image");
btnWhiten.Location = new Point(159, 18);
btnWhiten.Name = "btnWhiten";
btnWhiten.Size = new Size(80, 54);
btnWhiten.TabIndex = 1;
btnWhiten.UseVisualStyleBackColor = true;
btnWhiten.Click += btnWhiten_Click;
//
// btnLasso
//
btnLasso.BackColor = Color.White;
btnLasso.Image = (Image)resources.GetObject("btnLasso.Image");
btnLasso.Location = new Point(26, 40);
btnLasso.Name = "btnLasso";
btnLasso.Size = new Size(107, 74);
btnLasso.TabIndex = 0;
btnLasso.UseVisualStyleBackColor = false;
btnLasso.Click += btnLasso_Click;
//
// panelBoundaryLine
//
panelBoundaryLine.BackColor = Color.Gray;
panelBoundaryLine.Location = new Point(255, 18);
panelBoundaryLine.Name = "panelBoundaryLine";
panelBoundaryLine.Size = new Size(1, 116);
panelBoundaryLine.TabIndex = 11;
//
// groupBox4
//
groupBox4.Controls.Add(panel10);
groupBox4.Controls.Add(btnRedo);
groupBox4.Controls.Add(btnUndo);
groupBox4.Location = new Point(1687, 3);
groupBox4.Name = "groupBox4";
groupBox4.Size = new Size(250, 126);
groupBox4.TabIndex = 12;
groupBox4.TabStop = false;
groupBox4.Text = "操作";
//
// panel10
//
panel10.BackColor = Color.Gray;
panel10.Location = new Point(123, 24);
panel10.Name = "panel10";
panel10.Size = new Size(1, 88);
panel10.TabIndex = 12;
//
// btnRedo
//
btnRedo.Image = (Image)resources.GetObject("btnRedo.Image");
btnRedo.Location = new Point(146, 40);
btnRedo.Name = "btnRedo";
btnRedo.Size = new Size(96, 68);
btnRedo.TabIndex = 1;
btnRedo.UseVisualStyleBackColor = true;
btnRedo.Click += BtnRedo_Click;
//
// btnUndo
//
btnUndo.Image = (Image)resources.GetObject("btnUndo.Image");
btnUndo.Location = new Point(6, 40);
btnUndo.Name = "btnUndo";
btnUndo.Size = new Size(96, 68);
btnUndo.TabIndex = 0;
btnUndo.UseVisualStyleBackColor = true;
btnUndo.Click += BtnUndo_Click;
//
// roundButton11
//
roundButton11.BackColor = Color.Transparent;
roundButton11.BorderColor = Color.White;
roundButton11.FlatStyle = FlatStyle.Flat;
roundButton11.Location = new Point(0, 0);
roundButton11.Name = "roundButton11";
roundButton11.Size = new Size(75, 23);
roundButton11.TabIndex = 0;
roundButton11.UseVisualStyleBackColor = false;
//
// panelDrawingArea
//
panelDrawingArea.Anchor = AnchorStyles.Top | AnchorStyles.Bottom | AnchorStyles.Left | AnchorStyles.Right;
panelDrawingArea.AutoScroll = true;
panelDrawingArea.BackColor = Color.White;
panelDrawingArea.Controls.Add(tableLayoutPanel2);
panelDrawingArea.Location = new Point(0, 178);
panelDrawingArea.Margin = new Padding(0, 32, 0, 0);
panelDrawingArea.Name = "panelDrawingArea";
panelDrawingArea.Size = new Size(2046, 1002);
panelDrawingArea.TabIndex = 6;
panelDrawingArea.Paint += panel1_Paint;
//
// tableLayoutPanel2
//
tableLayoutPanel2.ColumnCount = 1;
tableLayoutPanel2.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 50F));
tableLayoutPanel2.Controls.Add(trackBarWidth, 0, 1);
tableLayoutPanel2.Controls.Add(pictureBox1, 0, 0);
tableLayoutPanel2.Location = new Point(3, 214);
tableLayoutPanel2.Name = "tableLayoutPanel2";
tableLayoutPanel2.RowCount = 2;
tableLayoutPanel2.RowStyles.Add(new RowStyle(SizeType.Percent, 11.43695F));
tableLayoutPanel2.RowStyles.Add(new RowStyle(SizeType.Percent, 88.56305F));
tableLayoutPanel2.Size = new Size(39, 304);
tableLayoutPanel2.TabIndex = 10;
//
// menuStrip1
//
menuStrip1.ImageScalingSize = new Size(24, 24);
menuStrip1.Items.AddRange(new ToolStripItem[] { 文件ToolStripMenuItem, 编辑ToolStripMenuItem, 查看ToolStripMenuItem, 保存ToolStripMenuItem });
menuStrip1.Location = new Point(0, 0);
menuStrip1.Name = "menuStrip1";
menuStrip1.Size = new Size(2046, 32);
menuStrip1.TabIndex = 11;
menuStrip1.Text = "menuStrip1";
menuStrip1.ItemClicked += menuStrip1_ItemClicked;
//
// 文件ToolStripMenuItem
//
文件ToolStripMenuItem.DropDownItems.AddRange(new ToolStripItem[] { 导入ToolStripMenuItem, 导出ToolStripMenuItem });
文件ToolStripMenuItem.Name = "文件ToolStripMenuItem";
文件ToolStripMenuItem.Size = new Size(84, 28);
文件ToolStripMenuItem.Text = "文件(F)";
//
// 导入ToolStripMenuItem
//
导入ToolStripMenuItem.Name = "导入ToolStripMenuItem";
导入ToolStripMenuItem.Size = new Size(251, 34);
导入ToolStripMenuItem.Text = "打开文件 Ctrl+O";
导入ToolStripMenuItem.Click += openFile;
//
// 导出ToolStripMenuItem
//
导出ToolStripMenuItem.Name = "导出ToolStripMenuItem";
导出ToolStripMenuItem.Size = new Size(251, 34);
导出ToolStripMenuItem.Text = "保存文件 Ctrl+S";
导出ToolStripMenuItem.Click += saveFile;
//
// 编辑ToolStripMenuItem
//
编辑ToolStripMenuItem.DropDownItems.AddRange(new ToolStripItem[] { 复制ToolStripMenuItem, 剪切CtrlXToolStripMenuItem, 粘贴CtrlvToolStripMenuItem, 旋转ToolStripMenuItem });
编辑ToolStripMenuItem.Name = "编辑ToolStripMenuItem";
编辑ToolStripMenuItem.Size = new Size(62, 28);
编辑ToolStripMenuItem.Text = "编辑";
//
// 复制ToolStripMenuItem
//
复制ToolStripMenuItem.Name = "复制ToolStripMenuItem";
复制ToolStripMenuItem.Size = new Size(209, 34);
复制ToolStripMenuItem.Text = "复制 Ctrl+c";
//
// 剪切CtrlXToolStripMenuItem
//
剪切CtrlXToolStripMenuItem.Name = "剪切CtrlXToolStripMenuItem";
剪切CtrlXToolStripMenuItem.Size = new Size(209, 34);
剪切CtrlXToolStripMenuItem.Text = "剪切 Ctrl+x";
//
// 粘贴CtrlvToolStripMenuItem
//
粘贴CtrlvToolStripMenuItem.Name = "粘贴CtrlvToolStripMenuItem";
粘贴CtrlvToolStripMenuItem.Size = new Size(209, 34);
粘贴CtrlvToolStripMenuItem.Text = "粘贴 Ctrl+v";
//
// 旋转ToolStripMenuItem
//
旋转ToolStripMenuItem.DropDownItems.AddRange(new ToolStripItem[] { 顺时针旋转90ToolStripMenuItem, 顺时针旋转180ToolStripMenuItem, 逆时针旋转90ToolStripMenuItem, 逆时针旋转180ToolStripMenuItem });
旋转ToolStripMenuItem.Name = "旋转ToolStripMenuItem";
旋转ToolStripMenuItem.Size = new Size(209, 34);
旋转ToolStripMenuItem.Text = "旋转";
//
// 顺时针旋转90ToolStripMenuItem
//
顺时针旋转90ToolStripMenuItem.Name = "顺时针旋转90ToolStripMenuItem";
顺时针旋转90ToolStripMenuItem.Size = new Size(240, 34);
顺时针旋转90ToolStripMenuItem.Text = "顺时针旋转90°";
//
// 顺时针旋转180ToolStripMenuItem
//
顺时针旋转180ToolStripMenuItem.Name = "顺时针旋转180ToolStripMenuItem";
顺时针旋转180ToolStripMenuItem.Size = new Size(240, 34);
顺时针旋转180ToolStripMenuItem.Text = "顺时针旋转180°";
//
// 逆时针旋转90ToolStripMenuItem
//
逆时针旋转90ToolStripMenuItem.Name = "逆时针旋转90ToolStripMenuItem";
逆时针旋转90ToolStripMenuItem.Size = new Size(240, 34);
逆时针旋转90ToolStripMenuItem.Text = "逆时针旋转90°";
//
// 逆时针旋转180ToolStripMenuItem
//
逆时针旋转180ToolStripMenuItem.Name = "逆时针旋转180ToolStripMenuItem";
逆时针旋转180ToolStripMenuItem.Size = new Size(240, 34);
逆时针旋转180ToolStripMenuItem.Text = "逆时针旋转180°";
//
// 查看ToolStripMenuItem
//
查看ToolStripMenuItem.Name = "查看ToolStripMenuItem";
查看ToolStripMenuItem.Size = new Size(62, 28);
查看ToolStripMenuItem.Text = "查看";
//
// 保存ToolStripMenuItem
//
保存ToolStripMenuItem.Name = "保存ToolStripMenuItem";
保存ToolStripMenuItem.Size = new Size(62, 28);
保存ToolStripMenuItem.Text = "保存";
//
// panel2
//
panel2.BackColor = Color.FromArgb(192, 192, 255);
panel2.Controls.Add(panel5);
panel2.Controls.Add(panelButtomLeft2);
panel2.Controls.Add(panelButtomLeft1);
panel2.Dock = DockStyle.Bottom;
panel2.Location = new Point(0, 1180);
panel2.Name = "panel2";
panel2.Size = new Size(2046, 65);
panel2.TabIndex = 12;
//
// panel5
//
panel5.Controls.Add(buttonSizeFitWindow);
panel5.Controls.Add(comboBoxCanvasSize);
panel5.Controls.Add(trackBarCanvasSize);
panel5.Controls.Add(btnBottomShrink);
panel5.Controls.Add(btnBottomEnlarge);
panel5.Dock = DockStyle.Right;
panel5.Location = new Point(1116, 0);
panel5.Name = "panel5";
panel5.Size = new Size(930, 65);
panel5.TabIndex = 1;
panel5.Paint += panel5_Paint;
//
// buttonSizeFitWindow
//
buttonSizeFitWindow.BackgroundImage = (Image)resources.GetObject("buttonSizeFitWindow.BackgroundImage");
buttonSizeFitWindow.Image = (Image)resources.GetObject("buttonSizeFitWindow.Image");
buttonSizeFitWindow.Location = new Point(257, -1);
buttonSizeFitWindow.Name = "buttonSizeFitWindow";
buttonSizeFitWindow.Size = new Size(65, 65);
buttonSizeFitWindow.TabIndex = 3;
buttonSizeFitWindow.UseVisualStyleBackColor = true;
buttonSizeFitWindow.Click += buttonSizeFitWindow_Click;
//
// comboBoxCanvasSize
//
comboBoxCanvasSize.FormattingEnabled = true;
comboBoxCanvasSize.Location = new Point(341, 19);
comboBoxCanvasSize.Name = "comboBoxCanvasSize";
comboBoxCanvasSize.Size = new Size(86, 32);
comboBoxCanvasSize.TabIndex = 2;
comboBoxCanvasSize.SelectedIndexChanged += comboBoxCanvasSize_SelectedIndexChanged;
//
// trackBarCanvasSize
//
trackBarCanvasSize.Location = new Point(504, 23);
trackBarCanvasSize.Name = "trackBarCanvasSize";
trackBarCanvasSize.Size = new Size(333, 69);
trackBarCanvasSize.TabIndex = 0;
trackBarCanvasSize.Scroll += trackBarCanvasSize_Scroll;
//
// btnBottomShrink
//
btnBottomShrink.BackgroundImage = (Image)resources.GetObject("btnBottomShrink.BackgroundImage");
btnBottomShrink.Image = (Image)resources.GetObject("btnBottomShrink.Image");
btnBottomShrink.Location = new Point(433, -1);
btnBottomShrink.Name = "btnBottomShrink";
btnBottomShrink.Size = new Size(65, 65);
btnBottomShrink.TabIndex = 1;
btnBottomShrink.UseVisualStyleBackColor = true;
btnBottomShrink.Click += btnBottomShrink_Click;
//
// btnBottomEnlarge
//
btnBottomEnlarge.BackColor = Color.Transparent;
btnBottomEnlarge.BackgroundImage = (Image)resources.GetObject("btnBottomEnlarge.BackgroundImage");
btnBottomEnlarge.Image = (Image)resources.GetObject("btnBottomEnlarge.Image");
btnBottomEnlarge.Location = new Point(843, -1);
btnBottomEnlarge.Name = "btnBottomEnlarge";
btnBottomEnlarge.Size = new Size(65, 65);
btnBottomEnlarge.TabIndex = 0;
btnBottomEnlarge.UseVisualStyleBackColor = false;
btnBottomEnlarge.Click += btnBottomEnlarge_Click;
//
// panelButtomLeft2
//
panelButtomLeft2.Controls.Add(panel4);
panelButtomLeft2.Controls.Add(labelColorB);
panelButtomLeft2.Controls.Add(panelB);
panelButtomLeft2.Controls.Add(labelColorG);
panelButtomLeft2.Controls.Add(label2);
panelButtomLeft2.Controls.Add(labelColorR);
panelButtomLeft2.Controls.Add(panelG);
panelButtomLeft2.Controls.Add(panelR);
panelButtomLeft2.Dock = DockStyle.Left;
panelButtomLeft2.Location = new Point(429, 0);
panelButtomLeft2.Name = "panelButtomLeft2";
panelButtomLeft2.Size = new Size(594, 65);
panelButtomLeft2.TabIndex = 2;
//
// panel4
//
panel4.BackColor = Color.Black;
panel4.Location = new Point(590, 13);
panel4.Name = "panel4";
panel4.Size = new Size(2, 43);
panel4.TabIndex = 1;
//
// labelColorB
//
labelColorB.Location = new Point(478, 17);
labelColorB.Name = "labelColorB";
labelColorB.Size = new Size(94, 34);
labelColorB.TabIndex = 2;
labelColorB.TextAlign = ContentAlignment.MiddleLeft;
//
// panelB
//
panelB.Location = new Point(432, 13);
panelB.Name = "panelB";
panelB.Size = new Size(40, 40);
panelB.TabIndex = 5;
//
// labelColorG
//
labelColorG.Location = new Point(334, 17);
labelColorG.Name = "labelColorG";
labelColorG.Size = new Size(94, 34);
labelColorG.TabIndex = 1;
labelColorG.TextAlign = ContentAlignment.MiddleLeft;
//
// label2
//
label2.Font = new Font("Microsoft YaHei UI", 12F, FontStyle.Bold);
label2.Location = new Point(0, 0);
label2.Name = "label2";
label2.Size = new Size(138, 65);
label2.TabIndex = 2;
label2.Text = "RGB:";
label2.TextAlign = ContentAlignment.MiddleCenter;
//
// labelColorR
//
labelColorR.Location = new Point(190, 13);
labelColorR.Name = "labelColorR";
labelColorR.Size = new Size(94, 36);
labelColorR.TabIndex = 0;
labelColorR.TextAlign = ContentAlignment.MiddleLeft;
//
// panelG
//
panelG.Location = new Point(288, 13);
panelG.Name = "panelG";
panelG.Size = new Size(40, 40);
panelG.TabIndex = 4;
//
// panelR
//
panelR.Location = new Point(144, 13);
panelR.Name = "panelR";
panelR.Size = new Size(40, 40);
panelR.TabIndex = 3;
//
// panelButtomLeft1
//
panelButtomLeft1.Controls.Add(panel3);
panelButtomLeft1.Controls.Add(labelYShow);
panelButtomLeft1.Controls.Add(labelY);
panelButtomLeft1.Controls.Add(labelXShow);
panelButtomLeft1.Controls.Add(labelCoordinate);
panelButtomLeft1.Controls.Add(labelX);
panelButtomLeft1.Dock = DockStyle.Left;
panelButtomLeft1.Location = new Point(0, 0);
panelButtomLeft1.Name = "panelButtomLeft1";
panelButtomLeft1.Size = new Size(429, 65);
panelButtomLeft1.TabIndex = 1;
panelButtomLeft1.Paint += panelButtomLeft1_Paint;
//
// panel3
//
panel3.BackColor = Color.Black;
panel3.Location = new Point(425, 13);
panel3.Name = "panel3";
panel3.Size = new Size(2, 43);
panel3.TabIndex = 0;
//
// labelYShow
//
labelYShow.AutoSize = true;
labelYShow.Location = new Point(258, 23);
labelYShow.Name = "labelYShow";
labelYShow.Size = new Size(0, 24);
labelYShow.TabIndex = 4;
labelYShow.TextAlign = ContentAlignment.MiddleLeft;
//
// labelY
//
labelY.AutoSize = true;
labelY.Font = new Font("Microsoft YaHei UI", 9F, FontStyle.Regular, GraphicsUnit.Point, 134);
labelY.Location = new Point(232, 23);
labelY.Name = "labelY";
labelY.Size = new Size(25, 24);
labelY.TabIndex = 3;
labelY.Text = "Y:";
labelY.TextAlign = ContentAlignment.MiddleCenter;
labelY.Click += labelY_Click;
//
// labelXShow
//
labelXShow.AutoSize = true;
labelXShow.Location = new Point(136, 23);
labelXShow.Name = "labelXShow";
labelXShow.Size = new Size(0, 24);
labelXShow.TabIndex = 2;
labelXShow.TextAlign = ContentAlignment.MiddleLeft;
//
// labelCoordinate
//
labelCoordinate.Font = new Font("Microsoft YaHei UI", 12F, FontStyle.Bold);
labelCoordinate.Location = new Point(0, 0);
labelCoordinate.Name = "labelCoordinate";
labelCoordinate.Size = new Size(101, 65);
labelCoordinate.TabIndex = 0;
labelCoordinate.Text = "坐标：";
labelCoordinate.TextAlign = ContentAlignment.MiddleCenter;
labelCoordinate.Click += labelCoordinate_Click;
//
// labelX
//
labelX.AutoSize = true;
labelX.Location = new Point(107, 23);
labelX.Name = "labelX";
labelX.Size = new Size(26, 24);
labelX.TabIndex = 1;
labelX.Text = "X:";
labelX.TextAlign = ContentAlignment.MiddleCenter;
//
// Form1
//
AutoScaleDimensions = new SizeF(11F, 24F);
AutoScaleMode = AutoScaleMode.Font;
BackColor = Color.FromArgb(192, 192, 255);
ClientSize = new Size(2046, 1245);
Controls.Add(panel2);
Controls.Add(panelDrawingArea);
Controls.Add(tableLayoutPanel1);
Controls.Add(menuStrip1);
DoubleBuffered = true;
Icon = (Icon)resources.GetObject("$this.Icon");
KeyPreview = true;
MainMenuStrip = menuStrip1;
Name = "Form1";
StartPosition = FormStartPosition.CenterParent;
Text = "画图板";
Load += Form1_Load;
KeyDown += Form1_KeyDown;
((System.ComponentModel.ISupportInitialize)trackBarWidth).EndInit();
((System.ComponentModel.ISupportInitialize)pictureBox1).EndInit();
tableLayoutPanel1.ResumeLayout(false);
groupBox1.ResumeLayout(false);
groupBox2.ResumeLayout(false);
panelColor.ResumeLayout(false);
btnYellow.ResumeLayout(false);
btnYellow.PerformLayout();
tableLayoutPanel4.ResumeLayout(false);
tableLayoutPanel4.PerformLayout();
panel1.ResumeLayout(false);
panel6.ResumeLayout(false);
tableLayoutPanel3.ResumeLayout(false);
tableLayoutPanel3.PerformLayout();
panelCurColor1.ResumeLayout(false);
panelCurColor1.PerformLayout();
panelCurColor2.ResumeLayout(false);
groupBox3.ResumeLayout(false);
groupBox4.ResumeLayout(false);
panelDrawingArea.ResumeLayout(false);
tableLayoutPanel2.ResumeLayout(false);
tableLayoutPanel2.PerformLayout();
menuStrip1.ResumeLayout(false);
menuStrip1.PerformLayout();
panel2.ResumeLayout(false);
panel5.ResumeLayout(false);
panel5.PerformLayout();
((System.ComponentModel.ISupportInitialize)trackBarCanvasSize).EndInit();
panelButtomLeft2.ResumeLayout(false);
panelButtomLeft1.ResumeLayout(false);
panelButtomLeft1.PerformLayout();
ResumeLayout(false);
PerformLayout();
}
#endregion
private Button btnPen;
private Button btnPigmentBucket;
private Button button3;
private Button btnEraser;
private Button btnColorExtractor;
private Button button6;
private TrackBar trackBarWidth;
private TableLayoutPanel tableLayoutPanel1;
private GroupBox groupBox1;
private GroupBox groupBox2;
private Button btnDrawRectangle;
private Button btnDrawEllipse;
private Button btnDrawDiamond;
private Button btnDrawTriangle;
private Button btnDrawHexagon;
private Button btnDrawCircle;
private Button btnDrawPentagon;
private Button btnDrawLine;
private ComboBox comboBox1;
private TableLayoutPanel btnYellow;
private Label label1;
private ColorDialog colorDialog1;
private TableLayoutPanel tableLayoutPanel3;
private RoundButton rbtnCurColor;
private RoundButton rbtnCurColor2;
private TableLayoutPanel tableLayoutPanel4;
private Panel panelCurColor1;
private Panel panelCurColor2;
private RoundButton rbtnBlack;
private RoundButton rbtnWhite;
private RoundButton rbtnGray;
private RoundButton rbtnGreen;
private RoundButton rbtnRed;
private RoundButton rbtnLightBlue;
private RoundButton rBtnOrange;
private RoundButton rbtnBlue;
private RoundButton rbtnYellow;
private RoundButton rbtnPurple;
private RoundButton roundButton11;
private Panel panelDrawingArea;
private RoundButton btnSelectColor;
private Panel panel1;
private Panel panelColor;
private MenuStrip menuStrip1;
private ToolStripMenuItem 文件ToolStripMenuItem;
private ToolStripMenuItem 导入ToolStripMenuItem;
private ToolStripMenuItem 导出ToolStripMenuItem;
private ToolStripMenuItem 编辑ToolStripMenuItem;
private ToolStripMenuItem 查看ToolStripMenuItem;
private ToolStripMenuItem 保存ToolStripMenuItem;
private GroupBox groupBox3;
private Button btnLasso;
private Button btnUndo;
private GroupBox groupBox4;
private Button btnRedo;
private PictureBox pictureBox1;
private Panel panel2;
private Label labelX;
private Label labelCoordinate;
private Panel panelButtomLeft1;
private Label labelXShow;
private Label labelY;
private Label labelYShow;
private Label label2;
private Panel panelButtomLeft2;
private Panel panelB;
private Panel panelG;
private Panel panelR;
private Label labelColorB;
private Label labelColorG;
private Label labelColorR;
private Panel panel3;
private Panel panel4;
private Panel panel5;
private Button btnBottomEnlarge;
private Button btnBottomShrink;
private TrackBar trackBarCanvasSize;
private Button buttonSizeFitWindow;
private ComboBox comboBoxCanvasSize;
private TableLayoutPanel tableLayoutPanel2;
private Panel panelBoundaryLine;
private Button btnChangeOpacity;
private Button btnWhiten;
private Panel panel8;
private Panel panel10;
private Panel panel6;
private Panel panel7;
private Label labelColor1;
private Label labelColor2;
private Button button4;
private Button button5;
private Button button2;
private Button button1;
private ToolStripMenuItem 复制ToolStripMenuItem;
private ToolStripMenuItem 剪切CtrlXToolStripMenuItem;
private ToolStripMenuItem 粘贴CtrlvToolStripMenuItem;
private ToolStripMenuItem 旋转ToolStripMenuItem;
private ToolStripMenuItem 顺时针旋转90ToolStripMenuItem;
private ToolStripMenuItem 顺时针旋转180ToolStripMenuItem;
private ToolStripMenuItem 逆时针旋转90ToolStripMenuItem;
private ToolStripMenuItem 逆时针旋转180ToolStripMenuItem;
}
}
二. 绘制图形
代码：
private void Panel1_MouseUp(object sender, MouseEventArgs e)
{
if (_choicePen)
{
_isDrawing = false;
startPoint = null;
}
else if (_choiceEraser)
{
_isErasing = false;
startPoint = null;
}
else if (_isDraging)
{
if (e.Button == MouseButtons.Left && startPoint.HasValue) // 左键释放
{
using (Graphics g = Graphics.FromImage(canvas))
{
// 画笔和画刷设置
Pen pen = new Pen(rbtnCurColor.BackColor, shapeWidth);
SolidBrush brush = new SolidBrush(rbtnCurColor2.BackColor);
// 根据当前选择的形状类型进行绘制
switch (shapeType)
{
case ShapeType.Line:
g.DrawLine(pen, startPoint.Value, endPoint.Value); // 绘制直线
break;
case ShapeType.Triangle:
DrawEquilateralTriangle(g, pen, brush, startPoint.Value, endPoint.Value);
break;
case ShapeType.Rectangle:
var rect = GetRectangleFromPoints(startPoint.Value, endPoint.Value); // 获取矩形区域
g.DrawRectangle(pen, rect); // 绘制矩形
break;
case ShapeType.Circle:
DrawCircle(g, pen, brush, startPoint.Value, endPoint.Value);
break;
case ShapeType.Ellipse:
DrawEllipse(g, pen, brush, startPoint.Value, endPoint.Value);
break;
case ShapeType.Pentagon:
DrawRegularPolygon(g, pen, brush, 5, startPoint.Value, endPoint.Value);
break;
case ShapeType.Hexagon:
DrawRegularPolygon(g, pen, brush, 6, startPoint.Value, endPoint.Value);
break;
case ShapeType.Diamond:
DrawDiamond(g, pen, brush, startPoint.Value, endPoint.Value);
break;
default:
break;
}
pen.Dispose();
brush.Dispose();
}
panelDrawingArea.Invalidate(); // 触发重绘
startPoint = null; // 重置起点，以便绘制新的形状
}
}
else if (_choicePigmentbucket)
{
Color targetColor = canvas.GetPixel(e.X, e.Y); // 获取点击位置的颜色
FloodFillOptimized(canvas, e.Location, targetColor, rbtnCurColor.BackColor); // 填充为所选颜色
panelDrawingArea.Invalidate(); // 触发重绘
}
else if (_choiceColorExtractor)
{
rbtnCurColor.BackColor = canvas.GetPixel(e.X, e.Y);
}
else if (_choiceSelection)
{
if (startPoint.HasValue)
{
endPoint = e.Location;
ApplySelectionEffects();
startPoint = null;
endPoint = null;
panelDrawingArea.Invalidate(); // 触发重绘
}
}
}
private void panel1_Paint(object sender, PaintEventArgs e)
{
int width = (int)(canvas.Width * scaleFactor);
int height = (int)(canvas.Height * scaleFactor);
// 计算缩放后图像在Panel中的位置，以保持图像居中
int x = (panelDrawingArea.Width - width) / 2 + panelDrawingArea.AutoScrollPosition.X;
int y = (panelDrawingArea.Height - height) / 2 + panelDrawingArea.AutoScrollPosition.Y;
// 设置Panel的最小滚动区域以适应放大后的图像
panelDrawingArea.AutoScrollMinSize = new Size(
(int)(canvas.Width * (1.0 + ((scaleFactor - 1.0) / 2.0))),
(int)(canvas.Height * (1.0 + ((scaleFactor - 1.0) / 2.0)))
);
// 考虑滚动偏移量来绘制图像
e.Graphics.DrawImage(canvas, new Rectangle(x, y, width, height));
if (_choiceSelection && selectStartPoint.HasValue && selectEndPoint.HasValue)
{
// 在工作图像上绘制选择矩形
e.Graphics.DrawRectangle(selectionPen,
Math.Min(selectStartPoint.Value.X, selectEndPoint.Value.X),
Math.Min(selectStartPoint.Value.Y, selectEndPoint.Value.Y),
Math.Abs(selectEndPoint.Value.X - selectStartPoint.Value.X),
Math.Abs(selectEndPoint.Value.Y - selectStartPoint.Value.Y)
);
// 根据起点和终点创建一个矩形区域
Rectangle selectionRectangle = new Rectangle(
Math.Min(selectStartPoint.Value.X, selectEndPoint.Value.X),
Math.Min(selectStartPoint.Value.Y, selectEndPoint.Value.Y),
Math.Abs(selectEndPoint.Value.X - selectStartPoint.Value.X),
Math.Abs(selectEndPoint.Value.Y - selectStartPoint.Value.Y)
);
}
if (!startPoint.HasValue || !endPoint.HasValue) return; // 起点或终点无效时返回
if (_isDraging)
{
// 画笔和画刷设置
Pen pen = new Pen(rbtnCurColor.BackColor, shapeWidth);
SolidBrush brush = new SolidBrush(rbtnCurColor2.BackColor); // 填充颜色
// 根据当前选择的形状类型进行绘制
switch (shapeType)
{
case ShapeType.Line:
e.Graphics.DrawLine(pen, startPoint.Value, endPoint.Value); // 绘制直线
break;
case ShapeType.Triangle:
DrawEquilateralTriangle(e.Graphics, pen, brush, startPoint.Value, endPoint.Value);
break;
case ShapeType.Rectangle:
var rect = GetRectangleFromPoints(startPoint.Value, endPoint.Value); // 获取矩形区域
e.Graphics.DrawRectangle(pen, rect); // 绘制矩形
break;
case ShapeType.Circle:
DrawCircle(e.Graphics, pen, brush, startPoint.Value, endPoint.Value);
break;
case ShapeType.Ellipse:
DrawEllipse(e.Graphics, pen, brush, startPoint.Value, endPoint.Value);
break;
case ShapeType.Pentagon:
DrawRegularPolygon(e.Graphics, pen, brush, 5, startPoint.Value, endPoint.Value);
break;
case ShapeType.Hexagon:
DrawRegularPolygon(e.Graphics, pen, brush, 6, startPoint.Value, endPoint.Value);
break;
case ShapeType.Diamond:
DrawDiamond(e.Graphics, pen, brush, startPoint.Value, endPoint.Value);
break;
default:
break;
}
pen.Dispose();
brush.Dispose();
}
}
// 绘制等边三角形
private void DrawEquilateralTriangle(Graphics g, Pen pen, Brush brush, Point start, Point end)
{
// 计算等边三角形的高和边长
int sideLength = (int)Math.Sqrt(Math.Pow(end.X - start.X, 2) + Math.Pow(end.Y - start.Y, 2));
Point top = new Point(start.X + sideLength / 2, start.Y - (int)(Math.Sqrt(3) / 2 * sideLength));
Point[] points = { start, end, top };
g.DrawPolygon(pen, points);
g.FillPolygon(brush, points);
}
// 绘制圆形
private void DrawCircle(Graphics g, Pen pen, Brush brush, Point start, Point end)
{
int radius = (int)Math.Sqrt(Math.Pow(end.X - start.X, 2) + Math.Pow(end.Y - start.Y, 2)) / 2;
int centerX = start.X + radius;
int centerY = start.Y + radius;
g.DrawEllipse(pen, centerX - radius, centerY - radius, 2 * radius, 2 * radius);
g.FillEllipse(brush, centerX - radius, centerY - radius, 2 * radius, 2 * radius);
}
// 绘制椭圆形
private void DrawEllipse(Graphics g, Pen pen, Brush brush, Point start, Point end)
{
int width = Math.Abs(end.X - start.X);
int height = Math.Abs(end.Y - start.Y);
int left = Math.Min(start.X, end.X);
int top = Math.Min(start.Y, end.Y);
g.DrawEllipse(pen, left, top, width, height);
g.FillEllipse(brush, left, top, width, height);
}
// 根据两个点获取矩形的位置和大小
private Rectangle GetRectangleFromPoints(Point p1, Point p2)
{
int x = Math.Min(p1.X, p2.X);
int y = Math.Min(p1.Y, p2.Y);
int width = Math.Abs(p1.X - p2.X);
int height = Math.Abs(p1.Y - p2.Y);
return new Rectangle(x, y, width, height);
}
// 绘制正多边形
private void DrawRegularPolygon(Graphics g, Pen pen, Brush brush, int sides, Point start, Point end)
{
// 假定start是中心点，end是多边形的一个顶点
int radius = (int)Math.Sqrt(Math.Pow(end.X - start.X, 2) + Math.Pow(end.Y - start.Y, 2));
double angleIncrement = 2 * Math.PI / sides;
PointF[] points = new PointF[sides];
for (int i = 0; i < sides; i++)
{
double angle = i * angleIncrement;
float x = (float)(start.X + radius * Math.Cos(angle));
float y = (float)(start.Y + radius * Math.Sin(angle));
points[i] = new PointF(x, y);
}
g.DrawPolygon(pen, points);
g.FillPolygon(brush, points);
}
// 绘制菱形
private void DrawDiamond(Graphics g, Pen pen, Brush brush, Point start, Point end)
{
// 假定start是菱形的一个顶点，end是菱形的对角顶点
int width = Math.Abs(end.X - start.X);
int height = Math.Abs(end.Y - start.Y);
int left = Math.Min(start.X, end.X);
int top = Math.Min(start.Y, end.Y);
PointF[] points = {
new PointF(left + width / 2, top),
new PointF(left + width, top + height / 2),
new PointF(left + width / 2, top + height),
new PointF(left, top + height / 2)
};
g.DrawPolygon(pen, points);
g.FillPolygon(brush, points);
}三. 修改颜色
主要代码：
private void btnSelectColor_Click(object sender, EventArgs e)
{
// 显示颜色选择器对话框
if (colorDialog1.ShowDialog() == DialogResult.OK)
{
if (_choiceColorOne)
{
// 用户选择了一种颜色，将该颜色设置为Panel的背景色
rbtnCurColor.BackColor = colorDialog1.Color;
}
else
{
rbtnCurColor2.BackColor = colorDialog1.Color;
}
}
}四. 铅笔工具
主要代码：
private void Panel1_MouseMove(object sender, MouseEventArgs e)
{
// 计算相对于绘图区域的偏移量:从 e.Position 中减去绘图区域（即缩放后的图像在面板上的位置）的左上角坐标（x, y）。得出一个相对于绘图区域的点
int width = (int)(canvas.Width * scaleFactor);
int height = (int)(canvas.Height * scaleFactor);
int x = (panelDrawingArea.Width - width) / 2 + panelDrawingArea.AutoScrollPosition.X;
int y = (panelDrawingArea.Height - height) / 2 + panelDrawingArea.AutoScrollPosition.Y;
Point relativePosition = new Point(e.X - x, e.Y - y);
//将相对位置转换为原始图像上的位置
Point currentPoint = new Point((int)(relativePosition.X / scaleFactor), (int)(relativePosition.Y / scaleFactor));
if (_isDrawing)
{
int circleRadius = trackBarWidth.Value / 2;
// 使用SolidBrush和Pen对象进行绘制
using (SolidBrush brush = new SolidBrush(rbtnCurColor.BackColor))
using (Pen pen = new Pen(brush, trackBarWidth.Value))
{
using (Graphics g = Graphics.FromImage(canvas))
{
g.SmoothingMode = SmoothingMode.AntiAlias;
// 如果存在前一个点，则从前一个点到当前点绘制一个圆圈
if (startPoint.HasValue)
{
// 计算两点间的距离，并根据需要调整圆圈的密度
double distance = Math.Sqrt(Math.Pow(currentPoint.X - startPoint.Value.X, 2) + Math.Pow(currentPoint.Y - startPoint.Value.Y, 2));
int steps = (int)(distance / circleRadius); // 根据距离确定需要绘制的圆圈数量
if (steps < 20) steps = 20; // 至少绘制一个圆圈
// 在前一个点和当前点之间插值，绘制圆圈
for (int i = 0; i <= steps; i++)
{
double t = (double)i / steps;
int x2 = (int)(startPoint.Value.X + (currentPoint.X - startPoint.Value.X) * t);
int y2 = (int)(startPoint.Value.Y + (currentPoint.Y - startPoint.Value.Y) * t);
g.FillEllipse(brush, x2 - circleRadius, y2 - circleRadius, 2 * circleRadius, 2 * circleRadius);
}
}
// 在当前位置也绘制一个圆圈，以确保路径的连续性
g.FillEllipse(brush, currentPoint.X - circleRadius, currentPoint.Y - circleRadius, 2 * circleRadius, 2 * circleRadius);
}
// 更新画布显示
panelDrawingArea.Refresh();
}
// 更新前一个点的位置
startPoint = currentPoint;
}
}
五. 颜料桶
主要代码：
private void Panel1_MouseUp(object sender, MouseEventArgs e){
Color targetColor = canvas.GetPixel(e.X, e.Y); // 获取点击位置的颜色
FloodFillOptimized(canvas, e.Location, targetColor, rbtnCurColor.BackColor); // 填充为所选颜色
panelDrawingArea.Invalidate(); // 触发重绘
}
private unsafe void FloodFillOptimized(Bitmap bmp, Point pt, Color targetColor, Color replacementColor)
{
// 如果目标颜色和替换颜色相同，则不进行填充操作
if (targetColor.ToArgb() == replacementColor.ToArgb())
return;
// 锁定位图以进行直接内存操作，提高性能
BitmapData bmpData = bmp.LockBits(
new Rectangle(0, 0, bmp.Width, bmp.Height), // 锁定整个位图区域
ImageLockMode.WriteOnly, // 只写模式
bmp.PixelFormat); // 使用位图的原始像素格式
try
{
// 计算每个像素占用的字节数
int bytesPerPixel = Bitmap.GetPixelFormatSize(bmp.PixelFormat) / 8;
// 无需使用的变量，可以删除或注释掉 // int byteCount = bmpData.Stride * bmp.Height;
// 获取位图数据的首地址指针
byte* scan0 = (byte*)bmpData.Scan0;
// 使用栈来存储待处理的像素点
Stack<Point> stack = new Stack<Point>();
stack.Push(pt); // 将初始点压入栈中
// 循环处理栈中的像素点
while (stack.Count > 0)
{
Point p = stack.Pop(); // 弹出栈顶的像素点
// 计算当前像素点在位图数据中的字节位置
int position = p.Y * bmpData.Stride + p.X * bytesPerPixel;
// 读取当前像素点的颜色（假设是24位RGB格式）
Color currentColor = Color.FromArgb(
scan0[position + 2], // R（红色分量）
scan0[position + 1], // G（绿色分量）
scan0[position]); // B（蓝色分量）
// 如果当前像素点颜色与目标颜色不同，则跳过
if (currentColor.ToArgb() != targetColor.ToArgb())
continue;
// 将当前像素点的颜色替换为替换颜色
scan0[position + 2] = replacementColor.R; // 设置红色分量
scan0[position + 1] = replacementColor.G; // 设置绿色分量
scan0[position] = replacementColor.B; // 设置蓝色分量
// 将相邻的上下左右四个点压入栈中，以便后续处理
// 注意要检查相邻点是否在图像范围内
if (p.X > 0) stack.Push(new Point(p.X - 1, p.Y)); // 左
if (p.X < bmp.Width - 1) stack.Push(new Point(p.X + 1, p.Y)); // 右
if (p.Y > 0) stack.Push(new Point(p.X, p.Y - 1)); // 上
if (p.Y < bmp.Height - 1) stack.Push(new Point(p.X, p.Y + 1)); // 下
}
}
finally
{
// 无论是否发生异常，都要确保解锁位图数据区域，释放资源
bmp.UnlockBits(bmpData);
}
}
六. 橡皮擦
主要代码：
private void Panel1_MouseMove(object sender, MouseEventArgs e)
{
else if (_isErasing)
{
int eraserRadius = eraserWidth / 2;
using (Graphics g = Graphics.FromImage(canvas))
{
g.SmoothingMode = SmoothingMode.AntiAlias;
using (SolidBrush eraserBrush = new SolidBrush(Color.White)) // 假设画布背景是白色
{
if (startPoint.HasValue)
{
// 计算两点间的距离
double distance = Math.Sqrt(Math.Pow(currentPoint.X - startPoint.Value.X, 2) + Math.Pow(currentPoint.Y - startPoint.Value.Y, 2));
int steps = (int)(distance / eraserRadius);
if (steps < 5) steps = 5;
// 在前一个点和当前点之间插值，绘制橡皮擦
for (int i = 0; i <= steps; i++)
{
double t = (double)i / steps;
int x2 = (int)(startPoint.Value.X + (currentPoint.X - startPoint.Value.X) * t);
int y2 = (int)(startPoint.Value.Y + (currentPoint.Y - startPoint.Value.Y) * t);
g.FillEllipse(eraserBrush, x2 - eraserRadius, y2 - eraserRadius, 2 * eraserRadius, 2 * eraserRadius);
}
}
// 在当前位置也绘制一个橡皮擦
g.FillEllipse(eraserBrush, currentPoint.X - eraserRadius, currentPoint.Y - eraserRadius, 2 * eraserRadius, 2 * eraserRadius);
}
}
panelDrawingArea.Refresh();
// 更新前一个点的位置
startPoint = currentPoint;
}
}七. 图像彩色
主要代码：同二
八. 撤销
主要代码：
// 撤销操作栈，保存之前的绘图状态
private Stack<Bitmap> undoStack = new Stack<Bitmap>();
private void BtnUndo_Click(object sender, EventArgs e) // 撤销
{
if (undoStack.Count > 0)
{
redoStack.Push(canvas.Clone() as Bitmap);
canvas = undoStack.Pop();
panelDrawingArea.Invalidate(); // 触发重绘事件
}
}九. 重做
主要代码：
// 重做操作栈，保存已撤销的绘图状态
private Stack<Bitmap> redoStack = new Stack<Bitmap>();
private void BtnRedo_Click(object sender, EventArgs e) // 重做
{
if (redoStack.Count > 0)
{
undoStack.Push(canvas.Clone() as Bitmap);
canvas = redoStack.Pop();
panelDrawingArea.Invalidate(); // 触发重绘事件
}
}十. 文件保存
主要代码：
private void saveFile(object sender, EventArgs e)
{
SaveFileDialog saveFileDialog1 = new SaveFileDialog();
saveFileDialog1.Title = "另存为";
// 设置保存文件对话框的过滤器，以便用户可以选择不同的图像格式
saveFileDialog1.Filter = "JPEG Files (*.jpg)|*.jpg|BMP Files (*.bmp)|*.bmp|GIF Files (*.gif)|*.gif|PNG Files (*.png)|*.png";
if (saveFileDialog1.ShowDialog() == DialogResult.OK)
{
if (saveFileDialog1.FileName != "")
{
using (FileStream fs = (FileStream)saveFileDialog1.OpenFile())
{
switch (saveFileDialog1.FilterIndex)
{
case 1:
canvas.Save(fs, ImageFormat.Jpeg);
break;
case 2:
canvas.Save(fs, ImageFormat.Bmp);
break;
case 3:
canvas.Save(fs, ImageFormat.Gif);
break;
case 4:
canvas.Save(fs, ImageFormat.Png);
break;
}
}
}
}
}十一. 文件打开
主要代码：
private void openFile(object sender, EventArgs e)
{
OpenFileDialog openFileDialog1 = new OpenFileDialog();
// 设置打开文件对话框的过滤器，以便用户可以选择图像文件
openFileDialog1.Filter = "Image Files (*.bmp;*.jpg;*.jpeg;*.png;*.gif)|*.bmp;*.jpg;*.jpeg;*.png;*.gif";
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
if (File.Exists(openFileDialog1.FileName))
{
try
{
// 从文件中加载图像到Bitmap对象
canvas = new Bitmap(openFileDialog1.FileName);
panelDrawingArea.Invalidate();
}
catch (Exception ex)
{
MessageBox.Show("错误: " + ex.Message);
}
}
}
}十二. 套索操作(比较粗糙)
主要代码：
if (_choiceSelection && selectStartPoint.HasValue && selectEndPoint.HasValue)
{
// 在工作图像上绘制选择矩形
e.Graphics.DrawRectangle(selectionPen,
Math.Min(selectStartPoint.Value.X, selectEndPoint.Value.X),
Math.Min(selectStartPoint.Value.Y, selectEndPoint.Value.Y),
Math.Abs(selectEndPoint.Value.X - selectStartPoint.Value.X),
Math.Abs(selectEndPoint.Value.Y - selectStartPoint.Value.Y)
);
// 根据起点和终点创建一个矩形区域
Rectangle selectionRectangle = new Rectangle(
Math.Min(selectStartPoint.Value.X, selectEndPoint.Value.X),
Math.Min(selectStartPoint.Value.Y, selectEndPoint.Value.Y),
Math.Abs(selectEndPoint.Value.X - selectStartPoint.Value.X),
Math.Abs(selectEndPoint.Value.Y - selectStartPoint.Value.Y)
);
}
十三. 美白(由RGB更改实现)
主要代码：
private void btnWhiten_Click(object sender, EventArgs e)
{
MakeAreaWhiter(canvas, new Rectangle(
Math.Min(selectStartPoint.Value.X, selectEndPoint.Value.X),
Math.Min(selectStartPoint.Value.Y, selectEndPoint.Value.Y),
Math.Abs(selectEndPoint.Value.X - selectStartPoint.Value.X),
Math.Abs(selectEndPoint.Value.Y - selectStartPoint.Value.Y)
), 0.8f);
}
public void MakeAreaWhiter(Bitmap bitmap, Rectangle selectionRectangle, float whitenFactor)
{
// 增白因子应该在0到1之间，其中0表示不改变颜色，1表示完全变白
if (whitenFactor < 0 || whitenFactor > 1)
{
throw new ArgumentOutOfRangeException(nameof(whitenFactor), "增白因子必须在0到1之间");
}
BitmapData bmpData = bitmap.LockBits(new Rectangle(0, 0, bitmap.Width, bitmap.Height), ImageLockMode.ReadWrite, bitmap.PixelFormat);
int bytesPerPixel = Bitmap.GetPixelFormatSize(bitmap.PixelFormat) / 8;
int byteCount = bmpData.Stride * bitmap.Height;
byte[] pixels = new byte[byteCount];
// 复制位图像素数据到数组中
Marshal.Copy(bmpData.Scan0, pixels, 0, byteCount);
for (int y = selectionRectangle.Top; y < selectionRectangle.Bottom; y++)
{
for (int x = selectionRectangle.Left; x < selectionRectangle.Right; x++)
{
int pixelIndex = (y * bmpData.Stride) + (x * bytesPerPixel);
if (pixelIndex + 2 < pixels.Length) // 确保不会越界，并且至少包含RGB通道
{
// 增加RGB值，使图像变白
pixels[pixelIndex] = (byte)Math.Min(255, pixels[pixelIndex] + (255 - pixels[pixelIndex]) * whitenFactor); // R
pixels[pixelIndex + 1] = (byte)Math.Min(255, pixels[pixelIndex + 1] + (255 - pixels[pixelIndex + 1]) * whitenFactor); // G
pixels[pixelIndex + 2] = (byte)Math.Min(255, pixels[pixelIndex + 2] + (255 - pixels[pixelIndex + 2]) * whitenFactor); // B
}
}
}
// 将修改后的数据复制回位图
Marshal.Copy(pixels, 0, bmpData.Scan0, byteCount);
// 解锁位图资源
bitmap.UnlockBits(bmpData);
panelDrawingArea.Invalidate(); // 重绘粘贴板以显示新图像
}十四. 透明(由透明度变化实现)：
主要代码：
private void btnChangeOpacity_Click(object sender, EventArgs e)
{
MakeAreaTransparent(canvas, new Rectangle(
Math.Min(selectStartPoint.Value.X, selectEndPoint.Value.X),
Math.Min(selectStartPoint.Value.Y, selectEndPoint.Value.Y),
Math.Abs(selectEndPoint.Value.X - selectStartPoint.Value.X),
Math.Abs(selectEndPoint.Value.Y - selectStartPoint.Value.Y)
), 0.5f);
}
public void MakeAreaTransparent(Bitmap bitmap, Rectangle selectionRectangle, float transparencyFactor)
{
// 透明度因子应该在0到1之间，其中0表示完全透明，1表示不改变透明度
if (transparencyFactor < 0 || transparencyFactor > 1)
{
throw new ArgumentOutOfRangeException(nameof(transparencyFactor), "透明度因子必须在0到1之间");
}
BitmapData bmpData = bitmap.LockBits(new Rectangle(0, 0, bitmap.Width, bitmap.Height), ImageLockMode.ReadWrite, bitmap.PixelFormat);
int bytesPerPixel = Bitmap.GetPixelFormatSize(bitmap.PixelFormat) / 8;
int byteCount = bmpData.Stride * bitmap.Height;
byte[] pixels = new byte[byteCount];
// 复制位图像素数据到数组中
Marshal.Copy(bmpData.Scan0, pixels, 0, byteCount);
for (int y = selectionRectangle.Top; y < selectionRectangle.Bottom; y++)
{
for (int x = selectionRectangle.Left; x < selectionRectangle.Right; x++)
{
int pixelIndex = (y * bmpData.Stride) + (x * bytesPerPixel);
if (pixelIndex + 3 < pixels.Length) // 确保不会越界，并且像素格式包含Alpha通道
{
// 降低Alpha值，增加透明度
pixels[pixelIndex + 3] = (byte)(pixels[pixelIndex + 3] * transparencyFactor);
}
}
}
// 将修改后的数据复制回位图
Marshal.Copy(pixels, 0, bmpData.Scan0, byteCount);
bitmap.UnlockBits(bmpData);
panelDrawingArea.Invalidate(); // 重绘粘贴板以显示新图像
}
// 选择区域并复制或剪切
private void CopyOrCutSelection(bool isCut)
{
if (selectStartPoint.HasValue && selectEndPoint.HasValue)
{
Rectangle selectionRectangle = new Rectangle(
Math.Min(selectStartPoint.Value.X, selectEndPoint.Value.X),
Math.Min(selectStartPoint.Value.Y, selectEndPoint.Value.Y),
Math.Abs(selectEndPoint.Value.X - selectStartPoint.Value.X),
Math.Abs(selectEndPoint.Value.Y - selectStartPoint.Value.Y)
);
canvasSelection = new Bitmap(selectionRectangle.Width, selectionRectangle.Height);
if (isCut)
{
MakeAreaWhiter(canvas, selectionRectangle, 1f);
}
panelDrawingArea.Invalidate(); // 重绘粘贴板以显示新图像
}
}十五. 源码分享
链接：https://pan.baidu.com/s/1J7Xvmkw302LD8suN36kE2w?pwd=8700
提取码：8700
最后，
希望文章对你有所帮助！
