Button动画扩展----------WinForm控件开发系列

该控件是继承于 Button 基类开发的。动画主要利用定时器完成。

    /// <summary>
    /// Button动画扩展
    /// </summary>
    [Description("Button动画扩展")]
    public partial class ButtonExt : Button
    {
        #region 新增属性

        private AnimationTimer animation = null;
        /// <summary>
        /// 动画组件对象
        /// </summary>
        [Description("动画组件对象")]
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
        public AnimationTimer Animation
        {
            get { return this.animation; }
            set { this.animation = value; }
        }

        #endregion

        #region 重写属性

        [DefaultValue(FlatStyle.Flat)]
        public new FlatStyle FlatStyle
        {
            get
            {
                return base.FlatStyle;
            }
            set
            {
                base.FlatStyle = value;
            }
        }

        [DefaultValue(false)]
        public new bool UseVisualStyleBackColor
        {
            get
            {
                return base.UseVisualStyleBackColor;
            }
            set
            {
                base.UseVisualStyleBackColor = value;
            }
        }

        [DefaultValue(typeof(Color), "245, 168, 154")]
        public override Color BackColor
        {
            get
            {
                return base.BackColor;
            }
            set
            {
                base.BackColor = value;
            }
        }

        [DefaultValue(typeof(Color), "White")]
        public override System.Drawing.Color ForeColor
        {
            get
            {
                return base.ForeColor;
            }
            set
            {
                base.ForeColor = value;
            }
        }

        [Browsable(false)]
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
        protected new bool DesignMode
        {
            get
            {
                if (this.GetService(typeof(IDesignerHost)) != null || System.ComponentModel.LicenseManager.UsageMode == System.ComponentModel.LicenseUsageMode.Designtime)
                {
                    return true;   //界面设计模式
                }
                else
                {
                    return false;//运行时模式
                }
            }
        }

        protected override Size DefaultSize
        {
            get
            {
                return new Size(100, 40);
            }
        }

        #endregion

        #region 字段

        private bool original_isload = false;
        private double original_w = 0.0;// 动画对象开始制定属性原始值
        private double original_h = 0.0;// 动画对象开始制定属性原始值
        private int original_x = 0;// 动画对象开始制定属性原始值
        private int original_y = 0;// 动画对象开始制定属性原始值

        #endregion

        public ButtonExt()
        {
            InitializeComponent();

            this.BackColor = System.Drawing.Color.OliveDrab;
            this.FlatAppearance.BorderSize = 0;
            this.FlatStyle = FlatStyle.Flat;
            this.ForeColor = Color.White;

            this.animation = new AnimationTimer(this, new AnimationOptions() { EveryNewTimer = false });
            this.animation.Animationing += new AnimationTimer.AnimationEventHandler(this.Animation_Animationing);
        }

        #region 重写

        protected override void OnMouseEnter(EventArgs e)
        {
            base.OnMouseEnter(e);

            if (this.DesignMode)
                return;

            this.loadOriginal(this.original_isload);
            this.animation.AnimationType = AnimationTypes.ElasticOut;
            this.animation.Start(AnimationIntervalTypes.Add, this.animation.AnimationUsedTime);
        }

        protected override void OnMouseLeave(EventArgs e)
        {
            base.OnMouseLeave(e);

            if (this.DesignMode)
                return;

            this.animation.AnimationType = AnimationTypes.BackIn;
            this.animation.Start(AnimationIntervalTypes.Subtrac, this.animation.AnimationUsedTime);
        }

        /// <summary> 
        /// 清理所有正在使用的资源。
        /// </summary>
        /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && components != null)
            {
                components.Dispose();
            }
            if (disposing)
            {
                if (this.animation != null)
                    this.animation.Dispose();
            }
            base.Dispose(disposing);
        }
        #endregion

        #region 私有方法

        protected void Animation_Animationing(object sender, AnimationEventArgs e)
        {
            ButtonExt control = (ButtonExt)sender;
            control.Width = (int)((double)control.original_w + e.AllTransformValue * e.ProgressValue);
            control.Height = (int)((double)control.original_h + e.AllTransformValue * e.ProgressValue);
            int x = (int)((this.original_w - control.Width) / 2.0);
            int y = (int)((this.original_h - control.Height) / 2.0);
            control.Location = new Point((int)this.original_x + x, (int)this.original_y + y);
        }

        private void loadOriginal(bool _isload)
        {
            if (!_isload)
            {
                this.original_w = this.Width;
                this.original_h = this.Height;
                this.original_x = this.Location.X;
                this.original_y = this.Location.Y;
                this.original_isload = true;
            }
        }

        #endregion

    }

控件库的源码已整体发布到gitee，下载地址：（花木兰控件库）https://gitee.com/tlmbem/hml