using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Drawing;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows.Forms;
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namespace HotelPms.Share.Windows.Component
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{
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/// <summary>
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/// 透明的加载等待层
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/// </summary>
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[ToolboxBitmap(typeof(LoadingPanel))]
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public class LoadingPanel : System.Windows.Forms.Control
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{
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/// <summary>
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/// 是否背景透明
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/// </summary>
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private bool _transparentBG = true;
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/// <summary>
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/// 透明度
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/// </summary>
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private int _alpha = 125;
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/// <summary>
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/// 容器组件
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/// </summary>
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private System.ComponentModel.Container components = new System.ComponentModel.Container();
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/// <summary>
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/// 构造函数
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/// </summary>
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public LoadingPanel() : this(true) { }
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/// <summary>
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/// 标准构造函数
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/// </summary>
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/// <param name="Alpha"></param>
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/// <param name="showLoadingImage"></param>
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public LoadingPanel(bool showLoadingImage)
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{
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// | ControlStyles.OptimizedDoubleBuffer AllPaintingInWmPaint
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SetStyle(ControlStyles.Opaque | ControlStyles.AllPaintingInWmPaint | ControlStyles.UserPaint, true);
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base.CreateControl();
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// 显示等待的图像
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if (showLoadingImage)
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{
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PictureBox pictureBox_Loading = new PictureBox();
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//pictureBox_Loading.BackColor = System.Drawing.Color.White;
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pictureBox_Loading.BackColor = System.Drawing.Color.Transparent;
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//Properties.Resources.load.MakeTransparent(Properties.Resources.load.GetPixel(0, 0));
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//pictureBox_Loading.SizeMode = PictureBoxSizeMode.AutoSize;
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//Bitmap bitmap2 = new Bitmap(@"D:\Develop\Src\Cs\L2Soft\HotelPms\HotelPms.Share.Windows\Resources\load.gif");
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//// 透過にする
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//bitmap2.MakeTransparent(bitmap2.GetPixel(0, 0));
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//pictureBox_Loading.Image = bitmap2;
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pictureBox_Loading.Image = Properties.Resources.load;
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pictureBox_Loading.Name = "pictureBox_Loading";
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pictureBox_Loading.Size = new System.Drawing.Size(200, 200);
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pictureBox_Loading.SizeMode = System.Windows.Forms.PictureBoxSizeMode.Zoom;
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Point Location = new Point(this.Location.X + (this.Width - pictureBox_Loading.Width) / 2, this.Location.Y + (this.Height - pictureBox_Loading.Height) / 2);
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pictureBox_Loading.Location = Location;
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pictureBox_Loading.Anchor = AnchorStyles.None;
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this.Controls.Add(pictureBox_Loading);
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}
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}
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/// <summary>
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/// 析构处理
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/// </summary>
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/// <param name="disposing"></param>
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protected override void Dispose(bool disposing)
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{
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if (disposing)
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{
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if (!((components == null)))
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{
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components.Dispose();
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}
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}
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base.Dispose(disposing);
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}
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protected override void OnSizeChanged(EventArgs e)
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{
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this.Invalidate();
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base.OnSizeChanged(e);
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}
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protected override void OnLocationChanged(EventArgs e)
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{
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this.Invalidate();
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base.OnLocationChanged(e);
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}
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/// <summary>
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/// 自定义绘制窗体
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/// </summary>
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/// <param name="e"></param>
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protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)
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{
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float vlblControlWidth;
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float vlblControlHeight;
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Pen labelBorderPen;
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SolidBrush labelBackColorBrush;
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if (_transparentBG)
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{
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Color drawColor = Color.FromArgb(this._alpha, this.BackColor);
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labelBorderPen = new Pen(drawColor, 0);
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labelBackColorBrush = new SolidBrush(drawColor);
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}
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else
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{
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labelBorderPen = new Pen(this.BackColor, 0);
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labelBackColorBrush = new SolidBrush(this.BackColor);
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}
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vlblControlWidth = this.Size.Width;
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vlblControlHeight = this.Size.Height;
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//e.Graphics.DrawRectangle(labelBorderPen, 0, 0, vlblControlWidth, vlblControlHeight);
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e.Graphics.FillRectangle(labelBackColorBrush, 0, 0, vlblControlWidth, vlblControlHeight);
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//Pen b6 = new Pen(Color.FromArgb(255, 215 - 16, 227 - 11, 242 - 5));
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//Pen b8 = new Pen(Color.FromArgb(_alpha, 215, 227 + 4, 242));
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//Pen b7 = new Pen(Color.FromArgb(255, 215 - 22, 227 - 10, 242));
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//GraphicsPath path = new GraphicsPath();
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//path.AddRectangle(new Rectangle( 0, 0, this.Width, this.Height));
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//LinearGradientBrush brocha = new LinearGradientBrush(new Point(0, 0), new Point(this.Height, this.Width), b6.Color, b8.Color);
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//e.Graphics.FillPath(brocha, path);
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base.OnPaint(e);
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}
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/// <summary>
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/// 控件透明特性
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/// </summary>
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protected override CreateParams CreateParams
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{
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get
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{
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CreateParams cp = base.CreateParams;
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// 开启 WS_EX_TRANSPARENT,使控件支持透明
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cp.ExStyle |= 0x20;
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return cp;
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}
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}
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/// <summary>
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/// 是否使用透明
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/// </summary>
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[Category("AlphaOpaque"), Description("是否使用透明,默认为True")]
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public bool TransparentBG
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{
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get { return _transparentBG; }
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set
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{
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_transparentBG = value;
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this.Invalidate();
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}
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}
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/// <summary>
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/// 设置透明度
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/// </summary>
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[Category("AlphaOpaque"), Description("设置透明度")]
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public int Alpha
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{
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get { return _alpha; }
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set
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{
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_alpha = value;
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this.Invalidate();
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}
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}
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/// <summary>
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/// 隐藏处理
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/// </summary>
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public void CloseWaiting()
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{
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this.BeginInvoke(new Action(() =>
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{
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SendToBack();
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Hide();
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}));
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}
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/// <summary>
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/// 显示处理
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/// </summary>
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public void ShowWaiting()
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{
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this.BeginInvoke(new Action(() =>
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{
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BringToFront();
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Show();
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}));
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}
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}
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}
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