300 lines
10 KiB
C#
300 lines
10 KiB
C#
using System;
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using System.Windows.Forms;
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using System.Drawing;
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using System.Drawing.Drawing2D;
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namespace UI.Framework.Tools
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{
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/// <summary>
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/// 该类实现了分级和移动功能
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/// 图形控制的运行时编辑
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/// </summary>
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public class PickBox
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{
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//////////////////////////////////////////////////////////////////
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// 私人常量和变量
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//////////////////////////////////////////////////////////////////
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private const int BOX_SIZE = 8;
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private Color BOX_COLOR = Color.White;
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//private ContainerControl m_container;
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private Control m_control;
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private Label[] lbl = new Label[8];
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private int startl;
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private int startt;
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private int startw;
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private int starth;
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private int startx;
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private int starty;
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private bool dragging;
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private Cursor[] arrArrow = new Cursor[] {Cursors.SizeNWSE, Cursors.SizeNS,
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Cursors.SizeNESW, Cursors.SizeWE, Cursors.SizeNWSE, Cursors.SizeNS,
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Cursors.SizeNESW, Cursors.SizeWE};
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private Cursor oldCursor;
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private const int MIN_SIZE = 20;
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public static Image ResizeImage(Image imgToResize, Size size)
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{
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//获取图片宽度
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int sourceWidth = imgToResize.Width;
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//获取图片高度
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int sourceHeight = imgToResize.Height;
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float nPercent = 0;
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float nPercentW = 0;
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float nPercentH = 0;
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//计算宽度的缩放比例
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nPercentW = ((float)size.Width / (float)sourceWidth);
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//计算高度的缩放比例
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nPercentH = ((float)size.Height / (float)sourceHeight);
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if (nPercentH < nPercentW)
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nPercent = nPercentH;
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else
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nPercent = nPercentW;
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//期望的宽度
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int destWidth = (int)(sourceWidth * nPercent);
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//期望的高度
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int destHeight = (int)(sourceHeight * nPercent);
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Bitmap b = new Bitmap(destWidth, destHeight);
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using (Graphics g = Graphics.FromImage((Image)b))
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{
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g.InterpolationMode = InterpolationMode.HighQualityBicubic;
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//绘制图像
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g.DrawImage(imgToResize, 0, 0, destWidth, destHeight);
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}
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return (Image)b;
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}
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public PickBox()
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{
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for (int i = 0; i < 8; i++)
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{
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lbl[i] = new Label();
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lbl[i].TabIndex = i;
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lbl[i].FlatStyle = 0;
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lbl[i].BorderStyle = BorderStyle.FixedSingle;
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lbl[i].BackColor = BOX_COLOR;
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lbl[i].Cursor = arrArrow[i];
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lbl[i].Text = "";
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lbl[i].BringToFront();
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lbl[i].MouseDown += new MouseEventHandler(this.lbl_MouseDown);
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lbl[i].MouseMove += new MouseEventHandler(this.lbl_MouseMove);
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lbl[i].MouseUp += new MouseEventHandler(this.lbl_MouseUp);
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}
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}
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public void RemoveSelect()
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{
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try
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{
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if (lbl != null && m_control != null)
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{
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for (int i = 0; i < 8; i++)
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{
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//lbl[i].BorderStyle = BorderStyle.None;
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//lbl[i].MouseDown -= new MouseEventHandler(this.lbl_MouseDown);
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//lbl[i].MouseMove -= new MouseEventHandler(this.lbl_MouseMove);
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//lbl[i].MouseUp -= new MouseEventHandler(this.lbl_MouseUp);
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m_control.Parent.Controls.Remove(lbl[i]);
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}
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}
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}
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catch { }
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}
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public void WireControl(Control ctl)
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{
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ctl.Click += new EventHandler(this.SelectControl);
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}
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/////////////////////////////////////////////////////////////////
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// 私有方法
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/////////////////////////////////////////////////////////////////
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//
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// 将一个选择框附加到发送方控件
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//
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private void SelectControl(object sender, EventArgs e)
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{
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if (m_control is Control)
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{
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m_control.Cursor = oldCursor;
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//删除该类附带的任何已存在的事件处理程序
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m_control.MouseDown -= new MouseEventHandler(this.ctl_MouseDown);
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m_control.MouseMove -= new MouseEventHandler(this.ctl_MouseMove);
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m_control.MouseUp -= new MouseEventHandler(this.ctl_MouseUp);
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m_control = null;
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}
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m_control = (Control)sender;
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//为移动选定的控件添加事件处理程序
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m_control.MouseDown += new MouseEventHandler(this.ctl_MouseDown);
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m_control.MouseMove += new MouseEventHandler(this.ctl_MouseMove);
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m_control.MouseUp += new MouseEventHandler(this.ctl_MouseUp);
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//Add sizing handles to Control's container (Form or PictureBox)
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for (int i = 0; i < 8; i++)
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{
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m_control.Parent.Controls.Add(lbl[i]);
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lbl[i].BringToFront();
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}
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//位置调整处理控制
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MoveHandles();
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//显示分级处理
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ShowHandles();
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oldCursor = m_control.Cursor;
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m_control.Cursor = Cursors.SizeAll;
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}
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public void Remove()
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{
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HideHandles();
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m_control.Cursor = oldCursor;
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}
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private void ShowHandles()
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{
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if (m_control != null)
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{
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for (int i = 0; i < 8; i++)
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{
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lbl[i].Visible = true;
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}
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}
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}
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private void HideHandles()
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{
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for (int i = 0; i < 8; i++)
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{
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lbl[i].Visible = false;
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}
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}
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private void MoveHandles()
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{
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int sX = m_control.Left - BOX_SIZE;
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int sY = m_control.Top - BOX_SIZE;
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int sW = m_control.Width + BOX_SIZE;
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int sH = m_control.Height + BOX_SIZE;
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int hB = BOX_SIZE / 2;
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int[] arrPosX = new int[] {sX+hB, sX + sW / 2, sX + sW-hB, sX + sW-hB,
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sX + sW-hB, sX + sW / 2, sX+hB, sX+hB};
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int[] arrPosY = new int[] {sY+hB, sY+hB, sY+hB, sY + sH / 2, sY + sH-hB,
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sY + sH-hB, sY + sH-hB, sY + sH / 2};
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for (int i = 0; i < 8; i++)
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lbl[i].SetBounds(arrPosX[i], arrPosY[i], BOX_SIZE, BOX_SIZE);
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}
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private void lbl_MouseDown(object sender, MouseEventArgs e)
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{
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dragging = true;
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startl = m_control.Left;
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startt = m_control.Top;
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startw = m_control.Width;
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starth = m_control.Height;
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HideHandles();
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}
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private void lbl_MouseMove(object sender, MouseEventArgs e)
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{
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int l = m_control.Left;
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int w = m_control.Width;
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int t = m_control.Top;
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int h = m_control.Height;
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if (dragging)
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{
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switch (((Label)sender).TabIndex)
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{
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case 0: // 拖动左上的分级箱
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l = startl + e.X < startl + startw - MIN_SIZE ? startl + e.X : startl + startw - MIN_SIZE;
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t = startt + e.Y < startt + starth - MIN_SIZE ? startt + e.Y : startt + starth - MIN_SIZE;
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w = startl + startw - m_control.Left;
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h = startt + starth - m_control.Top;
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break;
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case 1: // 拖动上方分级箱
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t = startt + e.Y < startt + starth - MIN_SIZE ? startt + e.Y : startt + starth - MIN_SIZE;
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h = startt + starth - m_control.Top;
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break;
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case 2: // 拖动右上的分级箱
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w = startw + e.X > MIN_SIZE ? startw + e.X : MIN_SIZE;
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t = startt + e.Y < startt + starth - MIN_SIZE ? startt + e.Y : startt + starth - MIN_SIZE;
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h = startt + starth - m_control.Top;
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break;
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case 3: // 拖动右侧中间大小的盒子
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w = startw + e.X > MIN_SIZE ? startw + e.X : MIN_SIZE;
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break;
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case 4: // 拖动right-bottom分级箱
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w = startw + e.X > MIN_SIZE ? startw + e.X : MIN_SIZE;
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h = starth + e.Y > MIN_SIZE ? starth + e.Y : MIN_SIZE;
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break;
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case 5: // 拖动中下部分级箱
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h = starth + e.Y > MIN_SIZE ? starth + e.Y : MIN_SIZE;
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break;
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case 6: // 拖动左下角大小框
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l = startl + e.X < startl + startw - MIN_SIZE ? startl + e.X : startl + startw - MIN_SIZE;
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w = startl + startw - m_control.Left;
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h = starth + e.Y > MIN_SIZE ? starth + e.Y : MIN_SIZE;
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break;
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case 7: //拖动左中施胶盒
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l = startl + e.X < startl + startw - MIN_SIZE ? startl + e.X : startl + startw - MIN_SIZE;
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w = startl + startw - m_control.Left;
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break;
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}
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l = (l < 0) ? 0 : l;
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t = (t < 0) ? 0 : t;
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m_control.SetBounds(l, t, w, h);
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}
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}
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private void lbl_MouseUp(object sender, MouseEventArgs e)
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{
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dragging = false;
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MoveHandles();
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ShowHandles();
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}
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private void ctl_MouseDown(object sender, MouseEventArgs e)
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{
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dragging = true;
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startx = e.X;
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starty = e.Y;
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HideHandles();
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}
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private void ctl_MouseMove(object sender, MouseEventArgs e)
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{
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if (dragging)
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{
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int l = m_control.Left + e.X - startx;
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int t = m_control.Top + e.Y - starty;
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int w = m_control.Width;
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int h = m_control.Height;
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l = (l < 0) ? 0 : ((l + w > m_control.Parent.ClientRectangle.Width) ?
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m_control.Parent.ClientRectangle.Width - w : l);
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t = (t < 0) ? 0 : ((t + h > m_control.Parent.ClientRectangle.Height) ?
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m_control.Parent.ClientRectangle.Height - h : t);
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m_control.Left = l;
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m_control.Top = t;
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}
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}
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private void ctl_MouseUp(object sender, MouseEventArgs e)
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{
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dragging = false;
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MoveHandles();
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ShowHandles();
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}
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}
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}
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