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.Text;
+using System.Windows.Forms;
+
+namespace Lskj.Main.Control
+{
+    public partial class ScrollBarBg : UserControl
+    {
+
+        #region private properties
+
+        private Timer ScrollTimer = null;
+
+        /// <summary>
+        /// 框架面板高度
+        /// </summary>
+        private int BoxPanelHeight = 0;
+
+        /// <summary>
+        /// 内容面板高度
+        /// </summary>
+        private int ContentPanelHeight = 0;
+
+        /// <summary>
+        /// 滚动条滑块鼠标左键是否按下
+        /// </summary>
+        private bool IsLeftKeyDown_ScrollBar = false;
+
+        /// <summary>
+        /// 滚动条背景板鼠标左键是否按下
+        /// </summary>
+        private bool IsLeftKeyDown_ScrollBg = false;
+
+        /// <summary>
+        /// 鼠标相对有屏幕的Y坐标
+        /// </summary>
+        private int MouseYToScreen = 0;
+
+        #endregion
+
+        public ScrollBarBg()
+        {
+            InitializeComponent();
+            this.ScrollBar.Top = 0;
+            this.MouseWheel += ScrollBar_MouseWheel;
+            ScrollBar.MouseWheel += ScrollBar_MouseWheel;
+            ScrollTimer = new Timer();
+            ScrollTimer.Interval = 200;
+            ScrollTimer.Tick += Timer_Tick;
+        }
+
+        #region public
+
+        /// <summary>
+        /// 滑块高度
+        /// </summary>
+        public int ScrollBarHeight
+        {
+            get { return this.ScrollBar.Height; }
+        }
+
+        /// <summary>
+        /// 滑块在滚动条上的位置
+        /// </summary>
+        public int ScrollBarTop
+        {
+            set { ScrollBarAndContent(value); }
+            get { return this.ScrollBar.Top; }
+        }
+
+        /// <summary>
+        /// 滑块背景颜色
+        /// </summary>
+        public Color ScrollBarBackColor
+        {
+            set { this.ScrollBar.BackColor = value; }
+            get { return ScrollBar.BackColor; }
+        }
+
+        /// <summary>
+        /// 滑块背景图片
+        /// </summary>
+        public Image ScrollBarBackgroundImage
+        {
+            set { this.ScrollBar.BackgroundImage = value; }
+            get { return ScrollBar.BackgroundImage; }
+        }
+
+        /// <summary>
+        /// 鼠标进入滚动条滑块事件
+        /// </summary>
+        public event EventHandler ScrollBarMouseEnter = null;
+
+        /// <summary>
+        /// 鼠标离开滚动条滑块事件
+        /// </summary>
+        public event EventHandler ScrollBarMouseLeave = null;
+
+        /// <summary>
+        /// 滑块滚动发生
+        /// int：内容面板相对于框架面板的高度
+        /// </summary>
+        public Action<int> ScrollBarScroll = null;
+
+        /// <summary>
+        /// 鼠标转动滚轮滑块滚动的单位高度,影响滚动速度
+        /// </summary>
+        private int mouseWheelUnitHeight = 10;
+        public int MouseWheelUnitHeight
+        {
+            set { mouseWheelUnitHeight = value; }
+            get { return mouseWheelUnitHeight; }
+        }
+
+        /// <summary>
+        /// 长按滚动条背景框滑块滚动的单位高度,影响滚动速度
+        /// </summary>
+        private int timerScrollUnitHeight = 40;
+        public int TimerScrollUnitHeight
+        {
+            set { timerScrollUnitHeight = value; }
+            get { return timerScrollUnitHeight; }
+        }
+
+        /// <summary>
+        /// 设置滑块高度
+        /// </summary>
+        /// <param name="panelHeight">面板高度</param>
+        /// <param name="contentHeight">内容高度</param>
+        public void SetScrollBarHeight(int boxPanelHeight, int contentPanelHeight)
+        {
+            BoxPanelHeight = boxPanelHeight;
+            ContentPanelHeight = contentPanelHeight;
+            ScrollBar.Height = (int)((double)boxPanelHeight / contentPanelHeight * this.Height);
+            MouseWheel += ScrollBar_MouseWheel;
+        }
+
+        /// <summary>
+        /// 内容面板鼠标滚动
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="e"></param>
+        public void ContentPanelMouseWheel(object sender, MouseEventArgs e)
+        {
+            ScrollBar_MouseWheel(sender, e);
+        }
+
+        #endregion
+
+        #region private
+
+        private void ScrollBar_MouseWheel(object sender, MouseEventArgs e)
+        {
+            int ScrollBarTop = e.Delta > 0 ? this.ScrollBar.Top - mouseWheelUnitHeight : this.ScrollBar.Top + mouseWheelUnitHeight;
+            ScrollBarAndContent(ScrollBarTop);
+        }
+
+        private void ScrollBar_MouseDown(object sender, MouseEventArgs e)
+        {
+            if (e.Button == MouseButtons.Left)
+            {
+                IsLeftKeyDown_ScrollBar = true;
+                MouseYToScreen = Cursor.Position.Y;
+            }
+        }
+
+        private void ScrollBar_MouseUp(object sender, MouseEventArgs e)
+        {
+            if (e.Button == MouseButtons.Left)
+                IsLeftKeyDown_ScrollBar = false;
+        }
+
+        private void ScrollBar_MouseMove(object sender, MouseEventArgs e)
+        {
+            if (IsLeftKeyDown_ScrollBar)
+            {
+                int ScrollBarTop = this.ScrollBar.Top + Cursor.Position.Y - MouseYToScreen;
+                MouseYToScreen = Cursor.Position.Y;
+
+                ScrollBarAndContent(ScrollBarTop);
+            }
+        }
+
+        private void ScrollBar_MouseEnter(object sender, EventArgs e)
+        {
+            if (ScrollBarMouseEnter != null)
+                ScrollBarMouseEnter(sender, e);
+        }
+
+        private void ScrollBar_MouseLeave(object sender, EventArgs e)
+        {
+            if (ScrollBarMouseLeave != null)
+                ScrollBarMouseLeave(sender, e);
+        }
+
+        private void ScrollBarBg_MouseDown(object sender, MouseEventArgs e)
+        {
+            if (e.Button == MouseButtons.Left)
+            {
+                IsLeftKeyDown_ScrollBg = true;
+                ScrollTimer.Start();
+            }
+        }
+
+        private void Timer_Tick(object sender, EventArgs e)
+        {
+            if (!IsLeftKeyDown_ScrollBg)
+                goto ret;
+
+            int ScrollBarTop = this.ScrollBar.Top;
+            int ScrollBarMiddlePointY = ScrollBarTop + ScrollBar.Height / 2;
+            int MousePointToClientY = this.PointToClient(Cursor.Position).Y;
+            if (ScrollBarMiddlePointY > MousePointToClientY)
+            {
+                if (ScrollBarMiddlePointY - timerScrollUnitHeight < this.PointToClient(Cursor.Position).Y)
+                    goto ret;
+                else
+                    ScrollBarTop -= timerScrollUnitHeight;
+            }
+            else
+            {
+                if (ScrollBarMiddlePointY + timerScrollUnitHeight > this.PointToClient(Cursor.Position).Y)
+                    goto ret;
+                else
+                    ScrollBarTop += timerScrollUnitHeight;
+            }
+
+            this.BeginInvoke(new Action(() =>
+            {
+                ScrollBarAndContent(ScrollBarTop);
+            }));
+            return;
+
+            ret:
+            IsLeftKeyDown_ScrollBg = false;
+            ScrollTimer.Stop();
+        }
+
+        private void ScrollBarBg_MouseUp(object sender, MouseEventArgs e)
+        {
+            if (e.Button == MouseButtons.Left && IsLeftKeyDown_ScrollBg)
+            {
+                IsLeftKeyDown_ScrollBg = false;
+                int ScrollBarTop = this.ScrollBar.Top + ScrollBar.Height / 2 > e.Y ? this.ScrollBar.Top - timerScrollUnitHeight : this.ScrollBar.Top + timerScrollUnitHeight;
+                ScrollBarAndContent(ScrollBarTop);
+            }
+        }
+
+        private void ScrollBarControl_SizeChanged(object sender, EventArgs e)
+        {
+            this.ScrollBar.Width = this.Width;
+        }
+
+        private void ScrollBarAndContent(int ScrollBarTop)
+        {
+            if (ScrollBarTop <= 0)
+                this.ScrollBar.Top = 0;
+            else if (ScrollBarTop >= this.Height - this.ScrollBar.Height)
+                this.ScrollBar.Top = this.Height - this.ScrollBar.Height;
+            else
+                this.ScrollBar.Top = ScrollBarTop;
+
+            int Y = (int)(this.ScrollBar.Top / (double)(this.Height - this.ScrollBar.Height) * (ContentPanelHeight - BoxPanelHeight));
+            if (ScrollBarScroll != null)
+                ScrollBarScroll(-Y);
+        }
+
+        #endregion
+    }
+}