mirror of
https://github.com/eggplantlwj/VisionEdit.git
synced 2026-03-24 00:36:41 +08:00
201 lines
8.1 KiB
C#
201 lines
8.1 KiB
C#
// ***********************************************************************
|
||
// Assembly : HZH_Controls
|
||
// Created : 2019-09-28
|
||
//
|
||
// ***********************************************************************
|
||
// <copyright file="ShadowComponent.cs">
|
||
// Copyright by Huang Zhenghui(黄正辉) All, QQ group:568015492 QQ:623128629 Email:623128629@qq.com
|
||
// </copyright>
|
||
//
|
||
// Blog: https://www.cnblogs.com/bfyx
|
||
// GitHub：https://github.com/kwwwvagaa/NetWinformControl
|
||
// gitee：https://gitee.com/kwwwvagaa/net_winform_custom_control.git
|
||
//
|
||
// If you use this code, please keep this note.
|
||
// ***********************************************************************
|
||
using System;
|
||
using System.Collections.Generic;
|
||
using System.Linq;
|
||
using System.Text;
|
||
using System.Drawing;
|
||
using System.Windows.Forms;
|
||
using System.ComponentModel;
|
||
using System.Drawing.Drawing2D;
|
||
|
||
namespace HZH_Controls.Controls
|
||
{
|
||
/// <summary>
|
||
/// Class ShadowComponent.
|
||
/// Implements the <see cref="System.ComponentModel.Component" />
|
||
/// Implements the <see cref="System.ComponentModel.IExtenderProvider" />
|
||
/// </summary>
|
||
/// <seealso cref="System.ComponentModel.Component" />
|
||
/// <seealso cref="System.ComponentModel.IExtenderProvider" />
|
||
[ProvideProperty("ShowShadow", typeof(Control))]
|
||
public class ShadowComponent : Component, IExtenderProvider
|
||
{
|
||
/// <summary>
|
||
/// The m control cache
|
||
/// </summary>
|
||
Dictionary<Control, bool> m_controlCache = new Dictionary<Control, bool>();
|
||
|
||
#region 构造函数 English:Constructor
|
||
/// <summary>
|
||
/// Initializes a new instance of the <see cref="ShadowComponent" /> class.
|
||
/// </summary>
|
||
public ShadowComponent()
|
||
{
|
||
|
||
}
|
||
|
||
/// <summary>
|
||
/// Initializes a new instance of the <see cref="ShadowComponent" /> class.
|
||
/// </summary>
|
||
/// <param name="container">The container.</param>
|
||
public ShadowComponent(IContainer container)
|
||
: this()
|
||
{
|
||
container.Add(this);
|
||
}
|
||
#endregion
|
||
|
||
/// <summary>
|
||
/// 指定此对象是否可以将其扩展程序属性提供给指定的对象。
|
||
/// </summary>
|
||
/// <param name="extendee">要接收扩展程序属性的 <see cref="T:System.Object" />。</param>
|
||
/// <returns>如果此对象可以扩展程序属性提供给指定对象，则为 true；否则为 false。</returns>
|
||
public bool CanExtend(object extendee)
|
||
{
|
||
if (extendee is Control && !(extendee is Form))
|
||
return true;
|
||
return false;
|
||
}
|
||
|
||
/// <summary>
|
||
/// Gets the show shadow.
|
||
/// </summary>
|
||
/// <param name="control">The control.</param>
|
||
/// <returns><c>true</c> if XXXX, <c>false</c> otherwise.</returns>
|
||
[Browsable(true), Category("自定义属性"), Description("是否显示倒影"), DisplayName("ShowShadow"), Localizable(true)]
|
||
public bool GetShowShadow(Control control)
|
||
{
|
||
if (m_controlCache.ContainsKey(control))
|
||
return m_controlCache[control];
|
||
else
|
||
return false;
|
||
}
|
||
|
||
/// <summary>
|
||
/// Sets the show shadow.
|
||
/// </summary>
|
||
/// <param name="control">The control.</param>
|
||
/// <param name="isShowShadow">if set to <c>true</c> [is show shadow].</param>
|
||
public void SetShowShadow(Control control, bool isShowShadow)
|
||
{
|
||
control.ParentChanged += control_ParentChanged;
|
||
m_controlCache[control] = isShowShadow;
|
||
}
|
||
|
||
/// <summary>
|
||
/// Handles the ParentChanged event of the control control.
|
||
/// </summary>
|
||
/// <param name="sender">The source of the event.</param>
|
||
/// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
|
||
void control_ParentChanged(object sender, EventArgs e)
|
||
{
|
||
Control control = sender as Control;
|
||
if (control.Parent != null && m_controlCache[control])
|
||
{
|
||
if (!lstPaintEventControl.Contains(control.Parent))
|
||
{
|
||
lstPaintEventControl.Add(control.Parent);
|
||
Type type = control.Parent.GetType();
|
||
System.Reflection.PropertyInfo pi = type.GetProperty("DoubleBuffered", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
|
||
pi.SetValue(control.Parent, true, null);
|
||
control.Parent.Paint += Parent_Paint;
|
||
}
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// The LST paint event control
|
||
/// </summary>
|
||
List<Control> lstPaintEventControl = new List<Control>();
|
||
/// <summary>
|
||
/// The shadow height
|
||
/// </summary>
|
||
private float shadowHeight = 0.3f;
|
||
|
||
/// <summary>
|
||
/// Gets or sets the height of the shadow.
|
||
/// </summary>
|
||
/// <value>The height of the shadow.</value>
|
||
[Browsable(true), Category("自定义属性"), Description("倒影高度，0-1"), Localizable(true)]
|
||
public float ShadowHeight
|
||
{
|
||
get { return shadowHeight; }
|
||
set { shadowHeight = value; }
|
||
}
|
||
/// <summary>
|
||
/// The BLN loading
|
||
/// </summary>
|
||
bool blnLoading = false;
|
||
/// <summary>
|
||
/// Handles the Paint event of the Parent control.
|
||
/// </summary>
|
||
/// <param name="sender">The source of the event.</param>
|
||
/// <param name="e">The <see cref="PaintEventArgs"/> instance containing the event data.</param>
|
||
void Parent_Paint(object sender, PaintEventArgs e)
|
||
{
|
||
if (blnLoading)
|
||
return;
|
||
if (shadowHeight > 0)
|
||
{
|
||
var control = sender as Control;
|
||
var lst = m_controlCache.Where(p => p.Key.Parent == control && p.Value);
|
||
if (lst != null && lst.Count() > 0)
|
||
{
|
||
blnLoading = true;
|
||
e.Graphics.SetGDIHigh();
|
||
foreach (var item in lst)
|
||
{
|
||
Control _control = item.Key;
|
||
|
||
using (Bitmap bit = new Bitmap(_control.Width, _control.Height))
|
||
{
|
||
_control.DrawToBitmap(bit, _control.ClientRectangle);
|
||
using (Bitmap bitNew = new Bitmap(bit.Width, (int)(bit.Height * shadowHeight)))
|
||
{
|
||
using (var g = Graphics.FromImage(bitNew))
|
||
{
|
||
g.DrawImage(bit, new RectangleF(0, 0, bitNew.Width, bitNew.Height), new RectangleF(0, bit.Height - bit.Height * shadowHeight, bit.Width, bit.Height * shadowHeight), GraphicsUnit.Pixel);
|
||
}
|
||
bitNew.RotateFlip(RotateFlipType.RotateNoneFlipY);
|
||
e.Graphics.DrawImage(bitNew, new Point(_control.Location.X, _control.Location.Y + _control.Height + 1));
|
||
Color bgColor = GetParentColor(_control);
|
||
LinearGradientBrush lgb = new LinearGradientBrush(new Rectangle(_control.Location.X, _control.Location.Y + _control.Height + 1, bitNew.Width, bitNew.Height), Color.FromArgb(50, bgColor), bgColor, 90f); //75f 表示角度
|
||
e.Graphics.FillRectangle(lgb, new Rectangle(new Point(_control.Location.X, _control.Location.Y + _control.Height + 1), bitNew.Size));
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
blnLoading = false;
|
||
}
|
||
|
||
/// <summary>
|
||
/// Gets the color of the parent.
|
||
/// </summary>
|
||
/// <param name="c">The c.</param>
|
||
/// <returns>Color.</returns>
|
||
private Color GetParentColor(Control c)
|
||
{
|
||
if (c.Parent.BackColor != Color.Transparent)
|
||
{
|
||
return c.Parent.BackColor;
|
||
}
|
||
return GetParentColor(c.Parent);
|
||
}
|
||
}
|
||
}
|
