（八十八）c#Winform自定义控件-转子

官网

http://www.hzhcontrols.com/

前提

入行已经7,8年了，一直想做一套漂亮点的自定义控件，于是就有了本系列文章。

GitHub：https://github.com/kwwwvagaa/NetWinformControl

码云：https://gitee.com/kwwwvagaa/net_winform_custom_control.git

如果觉得写的还行，请点个 star 支持一下吧

欢迎前来交流探讨： 企鹅群568015492 

来都来了，点个【推荐】再走吧，谢谢

NuGet

Install-Package HZH_Controls

目录

http://www.hzhcontrols.com/blog-63.html

用处及效果

 准备工作

也没什么准备的，开撸

开始

添加一个用户控件UCRotor

添加一下属性

 private Color rotorColor = Color.Black;

        public Color RotorColor
        {
            get { return rotorColor; }
            set
            {
                rotorColor = value;
                Refresh();
            }
        }

        RotorAround rotorAround = RotorAround.None;
        int jiaodu = 0;
        public RotorAround RotorAround
        {
            get { return rotorAround; }
            set
            {
                rotorAround = value;
                if (value == RotorAround.None)
                {
                    timer1.Enabled = false;
                    jiaodu = 0;
                    Refresh();
                }
                else
                    timer1.Enabled = true;
            }
        }
        private int speed = 100;

        [Description("旋转速度，100-1000，值越小 速度越快"), Category("自定义")]
        public int Speed
        {
            get { return speed; }
            set
            {
                if (value < 100 || value > 1000)
                    return;
                speed = value;
                timer1.Interval = value;
            }
        }

大小改变事件处理一下

void UCRotor_SizeChanged(object sender, EventArgs e)
        {
            maxWidth = Math.Min(this.Width, this.Height);
            one = maxWidth / 10;
            ResetPathCache();

        }

然后就是重绘了

 protected override void OnPaint(PaintEventArgs e)
        {
            base.OnPaint(e);
            var g = e.Graphics;
            this.Region = new System.Drawing.Region(lstCachePath[jiaodu]);
            g.TranslateTransform(Width / 2, Height / 2);
            // 旋转画板
            g.RotateTransform(jiaodu);
            // 回退画板x,y轴移动过的距离
            g.TranslateTransform(-(Width / 2), -(Height / 2));
            g.FillEllipse(new SolidBrush(rotorColor), new Rectangle((this.Width - maxWidth) / 2+5, (this.Height - maxWidth) / 2 + maxWidth / 4 + maxWidth / 8+2, maxWidth / 2-5, maxWidth / 2 - maxWidth / 4-4));
            g.FillEllipse(new SolidBrush(rotorColor), new Rectangle(this.Width / 2, (this.Height - maxWidth) / 2 + maxWidth / 4 + maxWidth / 8+2, maxWidth / 2-5, maxWidth / 2 - maxWidth / 4-4));
            g.FillEllipse(new SolidBrush(rotorColor), new Rectangle((this.Width - maxWidth) / 2 + maxWidth / 2 - maxWidth / 8, (this.Height - maxWidth) / 2 + maxWidth / 2 - maxWidth / 8, maxWidth / 4, maxWidth / 4));
            g.FillEllipse(new SolidBrush(Color.FromArgb(10, Color.White)), new Rectangle((this.Width - maxWidth) / 2 + maxWidth / 2 - maxWidth / 8, (this.Height - maxWidth) / 2 + maxWidth / 2 - maxWidth / 8, maxWidth / 4, maxWidth / 4));

        }

添加一个Timer用以旋转

private void timer1_Tick(object sender, EventArgs e)
        {
            if (rotorAround == RotorAround.Clockwise)
            {
                jiaodu += 15;
                if (jiaodu == 180)
                    jiaodu = 0;
            }
            else if (rotorAround == RotorAround.Counterclockwise)
            {
                jiaodu -= 15;
                if (jiaodu < 0)
                    jiaodu = 165;
            }

            Refresh();
        }

最后的话

如果你喜欢的话，请到 https://gitee.com/kwwwvagaa/net_winform_custom_control 点个星星吧