基线 SVN r240

SVN-Revision: r240
2025-02-06 06:46:06 +00:00
commit ab56a9bcf7
5317 changed files with 902274 additions and 0 deletions
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+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Reflection;
+using System.Text;
+using System.Windows.Forms;
+
+namespace Lskj.Control
+{
+    public partial class PictureBoxEx : BaseUserControl
+    {
+        private static bool isMove = false;
+        private static Point mouseDownPoint;
+        private static int zoomStep = 70;
+        public static int ZoomStep
+        {
+            get
+            {
+                return zoomStep;
+            }
+
+            set
+            {
+                zoomStep = value;
+            }
+        }
+        public Image Image
+        {
+            get
+            {
+                return this.mainPicBox.Image;
+            }
+            set
+            {
+                this.mainPicBox.Image = value;
+            }
+        }
+        public PictureBoxEx()
+        {
+            InitializeComponent();
+            this.mainPicBox.MouseWheel += PictureBoxEx_MouseWheel;
+            this.mainPicBox.MouseDown += MainPicBox_MouseDown;
+            this.mainPicBox.MouseMove += MainPicBox_MouseMove;
+            this.mainPicBox.MouseUp += MainPicBox_MouseUp;
+            this.SizeChanged += PictureBoxEx_SizeChanged;
+        }
+
+        private void MainPicBox_MouseUp(object sender, MouseEventArgs e)
+        {
+            if (e.Button == MouseButtons.Left)
+            {
+                isMove = false;
+            }
+        }
+
+        private void MainPicBox_MouseMove(object sender, MouseEventArgs e)
+        {
+            PictureBox pbox = sender as PictureBox;
+            pbox.Focus(); //鼠标在picturebox上时才有焦点，此时可以缩放
+            if (isMove)
+            {
+                int x, y;   //新的pictureBox1.Location(x,y)
+                int moveX, moveY; //X方向，Y方向移动大小。
+                moveX = Cursor.Position.X - mouseDownPoint.X;
+                moveY = Cursor.Position.Y - mouseDownPoint.Y;
+                x = pbox.Location.X + moveX;
+                y = pbox.Location.Y + moveY;
+                pbox.Location = new Point(x, y);
+                mouseDownPoint.X = Cursor.Position.X;
+                mouseDownPoint.Y = Cursor.Position.Y;
+            }
+        }
+
+        private void MainPicBox_MouseDown(object sender, MouseEventArgs e)
+        {
+            PictureBox pbox = sender as PictureBox;
+            if (e.Button == MouseButtons.Left)
+            {
+                mouseDownPoint.X = Cursor.Position.X; //记录鼠标左键按下时位置
+                mouseDownPoint.Y = Cursor.Position.Y;
+                isMove = true;
+                pbox.Focus(); //鼠标滚轮事件(缩放时)需要picturebox有焦点
+            }
+        }
+
+        private void PictureBoxEx_SizeChanged(object sender, EventArgs e)
+        {
+            this.mainPicBox.Width = this.Width;
+            this.mainPicBox.Height = this.Height;
+        }
+
+        private void PictureBoxEx_MouseWheel(object sender, MouseEventArgs e)
+        {
+            PictureBox pbox = sender as PictureBox;
+            int x = e.Location.X;
+            int y = e.Location.Y;
+            int ow = pbox.Width;
+            int oh = pbox.Height;
+            int VX, VY;  //因缩放产生的位移矢量
+            if (e.Delta > 0) //放大
+            {
+                pbox.Width += ZoomStep;
+                pbox.Height += ZoomStep;
+                PropertyInfo pInfo = pbox.GetType().GetProperty("ImageRectangle", BindingFlags.Instance |
+                 BindingFlags.NonPublic);
+                Rectangle rect = (Rectangle)pInfo.GetValue(pbox, null);
+                pbox.Width = rect.Width;
+                pbox.Height = rect.Height;
+            }
+            if (e.Delta < 0) //缩小
+            {
+                //防止一直缩成负值
+                if (pbox.Width < 300)
+                    return;
+
+                pbox.Width -= ZoomStep;
+                pbox.Height -= ZoomStep;
+                PropertyInfo pInfo = pbox.GetType().GetProperty("ImageRectangle", BindingFlags.Instance |
+                 BindingFlags.NonPublic);
+                Rectangle rect = (Rectangle)pInfo.GetValue(pbox, null);
+                pbox.Width = rect.Width;
+                pbox.Height = rect.Height;
+            }
+            VX = (int)((double)x * (ow - pbox.Width) / ow);
+            VY = (int)((double)y * (oh - pbox.Height) / oh);
+            pbox.Location = new Point(pbox.Location.X + VX, pbox.Location.Y + VY);
+        }
+    }
+}