实例介绍
【实例简介】探照灯效果，可更改图形，透明度等
【实例截图】
【核心代码】
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
using System.Runtime.InteropServices;
using System.Threading;
namespace Spotlight
{
public partial class FormSpotlight : Form
{
public FormSpotlight()
{
InitializeComponent();
mySpotlight = new MySpotlight();
}
MySpotlight mySpotlight;
private void FormSpotlight_Load(object sender, EventArgs e)
{
toolStripMenuItem2.Checked = true;
this.Opacity = 0.9;
椭圆ToolStripMenuItem.Checked = true;
黄色ToolStripMenuItem.Checked = true;
mySpotlight.ColorPen = Color.Yellow;
mySpotlight.IntPenSize = 20;
mySpotlight.MyShape = "strEillpse";
mySpotlight.BooDrawPath = true;
mySpotlight.ChangeShape(this);
BtnLocation();
}
private void FormSpotlight_Paint(object sender, PaintEventArgs e)
{
e.Graphics.SmoothingMode = SmoothingMode.HighQuality;
Pen myPen = new Pen(mySpotlight.ColorPen, mySpotlight.IntPenSize);
myPen.Alignment = PenAlignment.Inset;
if (mySpotlight.BooDrawPath)
{
e.Graphics.DrawPath(myPen, mySpotlight.MyDefiningShape());
}
}
private void FormSpotlight_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
mySpotlight.IntDownX= e.X;
mySpotlight.IntDownY = e.Y;
mySpotlight.MoveOrChangeSize(new Point(e.X, e.Y));
mySpotlight.BooDrawPath = false;
}
}
private void FormSpotlight_MouseMove(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
//定义鼠标改变形状大小
if (mySpotlight.BooIsChangeSize)
{
mySpotlight.ChangeSize(e);
mySpotlight.ChangeShape(this);
}
else //移动
{
mySpotlight.MoveShape(e);
mySpotlight.ChangeShape(this);
}
BtnLocation();
this.Invalidate();
}
}
private void FormSpotlight_MouseUp(object sender, MouseEventArgs e)
{
mySpotlight.BooDrawPath = true;
mySpotlight.BooSetAll = true;
mySpotlight.BooIsChangeSize = false;
if (e.Button == MouseButtons.Left)
{
mySpotlight.IntUpX = e.X;
mySpotlight.IntUpY = e.Y;
}
}
#region 设置菜单
private void 退出ToolStripMenuItem_Click(object sender, EventArgs e)
{
this.Close();
}
private void button1_MouseClick(object sender, MouseEventArgs e)
{
this.contextMenuStrip1.Show(button1, new Point(0, 0));
}
private void toolStripMenuItem5_Click(object sender, EventArgs e)
{
toolStripMenuItem5.Checked = true;
不透明ToolStripMenuItem.Checked = false;
toolStripMenuItem2.Checked = false;
toolStripMenuItem3.Checked = false;
toolStripMenuItem4.Checked = false;
this.Opacity = 0.25;
}
private void toolStripMenuItem4_Click(object sender, EventArgs e)
{
toolStripMenuItem4.Checked = true;
不透明ToolStripMenuItem.Checked = false;
toolStripMenuItem2.Checked = false;
toolStripMenuItem3.Checked = false;
toolStripMenuItem5.Checked = false;
this.Opacity = 0.5;
}
private void toolStripMenuItem3_Click(object sender, EventArgs e)
{
toolStripMenuItem3.Checked = true;
不透明ToolStripMenuItem.Checked = false;
toolStripMenuItem2.Checked = false;
toolStripMenuItem4.Checked = false;
toolStripMenuItem5.Checked = false;
this.Opacity=0.75;
}
private void toolStripMenuItem2_Click(object sender, EventArgs e)
{
toolStripMenuItem2.Checked = true;
不透明ToolStripMenuItem.Checked = false;
toolStripMenuItem3.Checked = false;
toolStripMenuItem4.Checked = false;
toolStripMenuItem5.Checked = false;
this.Opacity = 0.9;
}
private void 不透明ToolStripMenuItem_Click(object sender, EventArgs e)
{
不透明ToolStripMenuItem.Checked = true;
toolStripMenuItem2.Checked = false;
toolStripMenuItem3.Checked = false;
toolStripMenuItem4.Checked = false;
toolStripMenuItem5.Checked = false;
this.Opacity = 1;
}
private void 矩形ToolStripMenuItem_Click(object sender, EventArgs e)
{
椭圆ToolStripMenuItem.Checked = false;
矩形ToolStripMenuItem.Checked = true;
mySpotlight.MyShape = "strRectangle";
mySpotlight.ChangeShape(this);
}
private void 椭圆ToolStripMenuItem_Click(object sender, EventArgs e)
{
椭圆ToolStripMenuItem.Checked = true;
矩形ToolStripMenuItem.Checked = false;
mySpotlight.MyShape = "strEillpse";
mySpotlight.ChangeShape(this);
}
private void 无色ToolStripMenuItem_Click(object sender, EventArgs e)
{
无色ToolStripMenuItem.Checked = true;
橙色ToolStripMenuItem.Checked = false;
黄色ToolStripMenuItem.Checked = false;
红色ToolStripMenuItem.Checked = false;
蓝色ToolStripMenuItem.Checked = false;
mySpotlight.ColorPen = Color.Black;
mySpotlight.ChangeShape(this);
}
private void 黄色ToolStripMenuItem_Click(object sender, EventArgs e)
{
黄色ToolStripMenuItem.Checked = true;
橙色ToolStripMenuItem.Checked = false;
无色ToolStripMenuItem.Checked = false;
红色ToolStripMenuItem.Checked = false;
蓝色ToolStripMenuItem.Checked = false;
mySpotlight.ColorPen = Color.Yellow;
mySpotlight.ChangeShape(this);
}
private void 红色ToolStripMenuItem_Click(object sender, EventArgs e)
{
红色ToolStripMenuItem.Checked = true;
橙色ToolStripMenuItem.Checked = false;
无色ToolStripMenuItem.Checked = false;
蓝色ToolStripMenuItem.Checked = false;
黄色ToolStripMenuItem.Checked = false;
mySpotlight.ColorPen = Color.Red;
mySpotlight.ChangeShape(this);
}
private void 蓝色ToolStripMenuItem_Click(object sender, EventArgs e)
{
蓝色ToolStripMenuItem.Checked = true;
橙色ToolStripMenuItem.Checked = false;
无色ToolStripMenuItem.Checked = false;
红色ToolStripMenuItem.Checked = false;
黄色ToolStripMenuItem.Checked = false;
mySpotlight.ColorPen = Color.Blue;
mySpotlight.ChangeShape(this);
}
private void 橙色ToolStripMenuItem_Click(object sender, EventArgs e)
{
橙色ToolStripMenuItem.Checked = true;
蓝色ToolStripMenuItem.Checked = false;
无色ToolStripMenuItem.Checked = false;
红色ToolStripMenuItem.Checked = false;
黄色ToolStripMenuItem.Checked = false;
mySpotlight.ColorPen = Color.Orange;
mySpotlight.ChangeShape(this);
}
#endregion
/// <summary>
///设置 按钮坐标
/// </summary>
public void BtnLocation()
{
//button1 X 轴坐标
int btnX = mySpotlight.IntShapeLocationX mySpotlight.IntShapeWidth;
//button1 Y 轴坐标
int btnY = mySpotlight.IntShapeLocationY mySpotlight.IntShapeHeight;
Point pointLocation = new Point(btnX, btnY);
if (pointLocation.X > mySpotlight.IntFormMaxWidth && mySpotlight.IntShapeLocationY - button1.Height < 0)
{
pointLocation.X = mySpotlight.IntShapeLocationX - button1.Width;
pointLocation.Y = mySpotlight.IntShapeLocationY mySpotlight.IntShapeHeight;
}
else if (pointLocation.Y button1.Height > mySpotlight.IntFormMaxHeight && mySpotlight.IntShapeLocationX - button1.Width < 0)
{
pointLocation.X = mySpotlight.IntShapeLocationX mySpotlight.IntShapeWidth;
pointLocation.Y = mySpotlight.IntShapeLocationY - button1.Height;
}
else if (pointLocation.X button1.Width > mySpotlight.IntFormMaxWidth)
{
pointLocation.X = mySpotlight.IntShapeLocationX - button1.Width;
pointLocation.Y = mySpotlight.IntShapeLocationY - button1.Height;
}
else if (pointLocation.Y button1.Height > mySpotlight.IntFormMaxHeight)
{
pointLocation.X = mySpotlight.IntShapeLocationX - button1.Width;
pointLocation.Y = mySpotlight.IntShapeLocationY - button1.Height;
}
else
{
this.button1.Location = pointLocation;
}
this.button1.Location = pointLocation;
}
}
}
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