collapseexpandbutton.cs

破解的飞信源代码

namespace Imps.Client.Pc.BizControls.Conversation
{
    using Imps.Client.Pc.BizControls;
    using System;
    using System.Drawing;
    using System.Runtime.CompilerServices;
    using System.Windows.Forms;

    public class CollapseExpandButton : BControl
    {
        protected System.Drawing.Image hoverImage;
        protected System.Drawing.Image image;
        protected Rectangle imageRectangle;
        protected bool isExpanded;
        protected bool isMouseHover;

        public event EventHandler CollapseExpand;

        public CollapseExpandButton()
        {
            base.SetStyle(0x20802, true);
            base.Size = new Size(12, 13);
            this.BackColor = Color.Transparent;
        }

        private Rectangle CalculateImageRectangle()
        {
            if (this.Image == null)
            {
                return Rectangle.Empty;
            }
            return new Rectangle((base.Width - this.Image.Width) / 2, (base.Height - this.Image.Height) / 2, this.Image.Width, this.Image.Height);
        }

        public void ChangeStatus()
        {
            if (this.image != null)
            {
                this.image.RotateFlip(RotateFlipType.RotateNoneFlipX);
                this.hoverImage.RotateFlip(RotateFlipType.RotateNoneFlipX);
                this.isExpanded = !this.isExpanded;
                if (this.CollapseExpand != null)
                {
                    this.CollapseExpand(this, new EventArgs());
                }
            }
        }

        protected override void OnMouseClick(MouseEventArgs e)
        {
            base.OnMouseClick(e);
            if (MouseButtons.Left == e.Button)
            {
                this.ChangeStatus();
                base.Invalidate();
            }
        }

        protected override void OnMouseEnter(EventArgs e)
        {
            this.isMouseHover = true;
            base.Invalidate();
        }

        protected override void OnMouseLeave(EventArgs e)
        {
            this.isMouseHover = false;
            base.Invalidate();
        }

        protected override void OnPaint(PaintEventArgs e)
        {
            base.OnPaint(e);
            if (this.image != null)
            {
                Graphics graphics = e.Graphics;
                this.imageRectangle = this.CalculateImageRectangle();
                if (this.isMouseHover)
                {
                    graphics.DrawImage(this.hoverImage, this.imageRectangle);
                }
                else
                {
                    graphics.DrawImage(this.image, this.imageRectangle);
                }
            }
        }

        public System.Drawing.Image HoverImage
        {
            get
            {
                if (this.hoverImage == null)
                {
                    this.hoverImage = this.image;
                }
                return this.hoverImage;
            }
            set
            {
                this.hoverImage = value;
            }
        }

        public System.Drawing.Image Image
        {
            get
            {
                return this.image;
            }
            set
            {
                this.image = value;
            }
        }

        public bool IsExpanded
        {
            get
            {
                return this.isExpanded;
            }
            set
            {
                this.isExpanded = value;
            }
        }
    }
}