C# 自定义时间进度条

这篇文章对我帮助极大,我模仿着写了两遍大概摸清楚了自定义控件的流程。https://www.cnblogs.com/lesliexin/p/13265707.html 感谢大佬 leslie_xin

样式

最开始

进度条有更改

根据开始时间和结束时间 时间刻度间隔有更改

设置项

正文

首先,我模仿过leslie_xin,写过一个进度条,用于播放视频,但是没有刻度,现在没有刻度不行,所以要搞一个刻度,计划使用GDI+
然后,发现https://www.cnblogs.com/lesliexin/p/13265707.html 这个控件里的长、宽不能修改,不然得自己再计算细节性得问题,就打算继承UserControl,把leslie_xin的进度条拖放进来
```UserControl```就把他当成正常窗口写,改写啥就写啥

正经脸

首先,能够满足自定以的进度条样式吧,比如前景色、背景色、进度的颜色,所以有了
        private Color _BarBackColor = Color.FromArgb(128, 255, 128);
        [Category("TimeTrackBarControl"), Description("进度条背景色")]
        public Color BarBackColor
        {
            get
            {
                return this.trackBar.BarBackColor;
            }
            set
            {
                _BarBackColor = value;
                this.trackBar.BarBackColor = _BarBackColor;
                Invalidate();
            }
        }

        private Color _BarSliderColor = Color.FromArgb(64, 128, 64);
        [Category("TimeTrackBarControl"), Description("进度条滑块颜色\r\n有值部分的颜色")]
        public Color BarSliderColor
        {
            get
            {
                return this.trackBar.SliderColor;
            }
            set
            {
                _BarSliderColor = value;
                this.trackBar.SliderColor = _BarSliderColor;
                Invalidate();
            }
        }
然后因为要显示时间、开始时间、结束时间,所以又有了
        private DateTime _StartTime = DateTime.Now.AddHours(-1);
        [Category("TimeTrackBarControl"), Description("开始时间")]
        public DateTime StartTime
        {
            get
            {
                return _StartTime;
            }
            set
            {
                _StartTime = value;
                //if (_StartTime > _EndTime) _StartTime = _EndTime.AddMinutes(-1);
                _BarMaximum = (_EndTime - _StartTime).TotalSeconds.ToInt();
                this.trackBar.Maximum = _BarMaximum;
                this.trackBar.Minimum = 0;
                Invalidate();
            }
        }

        private DateTime _EndTime = DateTime.Now;
        [Category("TimeTrackBarControl"), Description("结束时间")]
        public DateTime EndTime
        {
            get
            {
                return _EndTime;
            }
            set
            {
                _EndTime = value;
                //if (_EndTime < _StartTime) _EndTime = _StartTime.AddMinutes(1);
                _BarMaximum = (_EndTime - _StartTime).TotalSeconds.ToInt();
                this.trackBar.Maximum = _BarMaximum;
                this.trackBar.Minimum = 0;
                Invalidate();
            }
        }
再次因为要纪录进度条的值、最大值、最小值为0,记个der~,(我也不知道为啥会有这样值,脑子可能有它自己的想法)所以还有
        private int _BarMaximum = 0;
        [Category("TimeTrackBarControl"), Description("最大值\r\n默认:0,由开始时间和结束时间决定(只读)")]
        public int BarMaximum
        {
            get
            {
                return _BarMaximum;
            }
        }

        private int _BarCurValue = 0;
        [Category("TimeTrackBarControl"), Description("当前值")]
        public int BarCurValue
        {
            get
            {
                _BarCurValue = this.trackBar.CurValue;
                return _BarCurValue;
            }
            set
            {
                _BarCurValue = value;
                if (_BarCurValue < 0) _BarCurValue = 0;
                if (_BarCurValue > _BarMaximum) _BarCurValue = _BarMaximum;
                this.trackBar.CurValue = _BarCurValue;
                BarCurValueChanged?.Invoke(this, new CurValueEventArgs(_BarCurValue));
            }
        }
你这个时间刻度总得有颜色吧,总不能是皇帝的时间刻度,进度条的值对应的时间label也得有样式吧,皇帝也没有label啊,所以双有了
        private Color _TimeScaleColor = Color.FromArgb(210, 210, 210);
        [Category("TimeTrackBarControl"), Description("时间刻度的颜色")]
        public Color TimeScaleColor
        {
            get
            {
                return _TimeScaleColor;
            }
            set
            {
                _TimeScaleColor = value;
                Invalidate();
            }
        }

        private int _ScaleInterval = 1200;
        [Category("TimeTrackBarControl"), Description("时间刻度之间相隔秒数,小于零表示自适应\r\n单位:秒")]
        public int ScaleInterval
        {
            get
            {
                return _ScaleInterval;
            }
            set
            {
                _ScaleInterval = value;
                //if (_ScaleInterval <= 0)
                //{
                //    _ScaleInterval = 1800;
                //}
                Invalidate();
            }
        }
        private int _RealScaleInterval = 1200;
        [Category("TimeTrackBarControl"), Description("实际相隔的秒数(为了显示自适应时真实的间隔时间)\r\n单位:秒")]
        public int RealScaleInterval
        {
            get
            {
                _RealScaleInterval = _ScaleInterval > 0 ? _ScaleInterval : _RealScaleInterval;
                return _RealScaleInterval;
            }
        }

        private Color _TimeLabelBackColor = Color.FromArgb(255, 192, 192);
        [Category("TimeTrackBarControl"), Description("时间label背景色")]
        public Color TimeLabelBackColor
        {
            get
            {
                return _TimeLabelBackColor;
            }
            set
            {
                _TimeLabelBackColor = value;
                Invalidate();
            }
        }

        private Color _TimeLabelForeColor = Color.FromArgb(192,255,192);
        [Category("TimeTrackBarControl"), Description("时间label前景色")]
        public Color TimeLabelForeColor
        {
            get
            {
                return _TimeLabelForeColor;
            }
            set
            {
                _TimeLabelForeColor = value;
                Invalidate();
            }
        }
最后你这个时间刻度总得能够直接跳到某个时间点吧,所以叒有
        public void SeekByTime(DateTime time)
        {
            BarCurValue = (time - StartTime).TotalSeconds.ToInt();
        }
你搞了那么多样式,总得有人去画吧,所以叕有了
        protected override void OnPaint(PaintEventArgs e)
        {
            base.OnPaint(e);
        }
时间刻度呢?总得去生成吧,所以我们要计算一下,每个刻度之间间隔多少秒钟,毕竟进度条的最小值为零,最大值为开始时间和最小时间间隔的秒数。
所以:1、计算间隔
2、计算时间刻度的坐标
3、画出来
        /// <summary>
        /// 微软雅黑 regular 10F 23:56分约占38个像素,现定为45个像素为最小值,时间刻度:60秒为最小值
        /// </summary>
        /// <returns></returns>
        private int SelfAdaption()
        {
            float radio = 45 * 1.0f / trackBar.Width;//45个像素占进度条总长的比例
            double interval = (_EndTime - _StartTime).TotalSeconds * radio;//这个比例下,占多长的时间
            if (interval<=60)
            {
                interval = 60;
            }
            else if (interval>60 && interval <= 300)
            {
                interval = 300;
            }
            else if (interval >300 && interval <= 600)
            {
                interval = 600;
            }
            else if (interval >600 && interval <= 1200)
            {
                interval = 1200;
            }
            else if (interval > 1200 && interval <= 1800)
            {
                interval = 1800;
            }
            else if (interval > 1800 && interval <= 3600)
            {
                interval = 3600;
            }
            return Convert.ToInt32(interval);
        }

        /// <summary>
        /// 要划线的坐标
        /// </summary>
        /// <param name="intervalSec"></param>
        /// <returns></returns>
        private List<TimeScaleLocation> TimeScaleList()
        {
            DateTime time = _StartTime;
            if (_ScaleInterval<0)
            {
                _RealScaleInterval = SelfAdaption();
            }
            else
            {
                _RealScaleInterval = _ScaleInterval;
            }
            List<TimeScaleLocation> scales = new List<TimeScaleLocation>();
            TimeScaleLocation start_scale = new TimeScaleLocation(trackBar.Location.X, trackBar.Location.Y + trackBar.Height / 2, _StartTime);
            scales.Add(start_scale);
            while (time.AddSeconds(_RealScaleInterval) < _EndTime)
            {
                time = time.AddSeconds(_RealScaleInterval);
                int val = (time - _StartTime).TotalSeconds.ToInt();
                float radio = val * 1.0f / _BarMaximum;
                int x = trackBar.Location.X + Convert.ToInt32(trackBar.Width * radio);
                int y = trackBar.Location.Y;
                TimeScaleLocation scale = new TimeScaleLocation(x, y, time);
                scales.Add(scale);
            }
            int end_x = trackBar.Location.X + trackBar.Width;
            int end_y = trackBar.Location.Y + trackBar.Height / 2;
            TimeScaleLocation end_scale = new TimeScaleLocation(end_x, end_y, _EndTime);
            scales.Add(end_scale);
            return scales;
        }

        // 完全体的OnPaint方法
        protected override void OnPaint(PaintEventArgs e)
        {
            base.OnPaint(e);
            ChangeStyle();
            e.Graphics.SmoothingMode = SmoothingMode.HighQuality;
            Pen pen = new Pen(_TimeScaleColor, 1);
            Brush brush = new SolidBrush(_TimeScaleColor);
            Font font = new Font("微软雅黑", 10, FontStyle.Regular, GraphicsUnit.Point, (byte)134);
            List<TimeScaleLocation> scales = TimeScaleList();
            for (int i = 0; i < scales.Count; i++)
            {
                TimeScaleLocation item = scales[i];
                int length = 15;
                if (_RealScaleInterval * i % 3600 == 0)
                {
                    length = length + trackBar.Height * 1;
                }
                if (i == 0 || i == scales.Count - 1)
                {
                    length = (int)(length + trackBar.Height * 1.5);
                }
                if (i == 0)
                {
                    item.x -= 1;
                }
                e.Graphics.DrawLine(pen, item.x, item.y, item.x, item.y - length);
                e.Graphics.DrawString(item.time.ToString("HH:mm"), font, brush, new Point(item.x - 19, item.y - length - trackBar.Height * 2));
            }
        }

        // 设置label样式,onpaint方法调用
        private void ChangeStyle()
        {
            this.timeLabel.BackColor = _TimeLabelBackColor;
            this.timeLabel.ForeColor = _TimeLabelForeColor;
        }
是不是发现有个TimeScaleLocation不知道是啥?
using System;

namespace QAQ.Controls
{
    /// <summary>
    /// 时间刻度信息
    /// </summary>
    public class TimeScaleLocation
    {
        /// <summary>
        /// time对应在进度条上的点的x坐标
        /// </summary>
        public int x { get; set; }
        /// <summary>
        /// time对应在进度条上的点的y坐标
        /// </summary>
        public int y { get; set; }
        /// <summary>
        /// time时间点
        /// </summary>
        public DateTime time{get;set;}

        public TimeScaleLocation(int x, int y, DateTime time)
        {
            this.x = x;
            this.y = y;
            this.time = time;
        }
    }
}
哦,我亲爱的老伙计,我好像忘记了把事件加上来了,我今天得罚我自己吃三大碗饭,治治我这个不长记性的脑子。所以这个事件我借用那个大佬的
        #region 事件,

        public delegate void CurValueChangedEventHandler(object sender, CurValueEventArgs e);
        /// <summary>
        /// 值发生改变时引发的事件
        /// </summary>
        public event CurValueChangedEventHandler BarCurValueChanged;

        #endregion

收获

1、markdown 不会使,排版全用######

####### 我太难了

2、在UserControl中,如果不是其他控件的事件,那么将事件替换为OnXXX(),例如:Click替换为OnClick(),这样好像比较快,尤其是鼠标事件
3、注意循环调用,比如修改 BarCurValue时修改了this.trackBar.value还加了事件,然后又在this.trackBar的valueChanged事件中修改了BarCurValue,然后就会发现vs好像累了,它不想理你了,怎么挑逗都不起作用了outofstrack?还是其他的啥玩意。就是这两个发生了循环调用
4、这个版本有点小问题,修改办法放在收获

其他,未知,忘记了,等我记起了再补充。退朝~

完整内容

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;

namespace QAQ.Controls
{
    [DefaultEvent("CurValueChanged")]
    public partial class TimeTrackBarControl : UserControl
    {
        public TimeTrackBarControl()
        {
            InitializeComponent();
        }

        #region 事件

        public delegate void CurValueChangedEventHandler(object sender, CurValueEventArgs e);
        /// <summary>
        /// 值发生改变时引发的事件
        /// </summary>
        public event CurValueChangedEventHandler BarCurValueChanged;

        #endregion

        private Color _BarBackColor = Color.FromArgb(128, 255, 128);
        [Category("TimeTrackBarControl"), Description("进度条背景色")]
        public Color BarBackColor
        {
            get
            {
                return this.trackBar.BarBackColor;
            }
            set
            {
                _BarBackColor = value;
                this.trackBar.BarBackColor = _BarBackColor;
                Invalidate();
            }
        }

        private Color _BarSliderColor = Color.FromArgb(64, 128, 64);
        [Category("TimeTrackBarControl"), Description("进度条滑块颜色\r\n有值部分的颜色")]
        public Color BarSliderColor
        {
            get
            {
                return this.trackBar.SliderColor;
            }
            set
            {
                _BarSliderColor = value;
                this.trackBar.SliderColor = _BarSliderColor;
                Invalidate();
            }
        }


        private DateTime _StartTime = DateTime.Now.AddHours(-1);
        [Category("TimeTrackBarControl"), Description("开始时间")]
        public DateTime StartTime
        {
            get
            {
                return _StartTime;
            }
            set
            {
                _StartTime = value;
                //if (_StartTime > _EndTime) _StartTime = _EndTime.AddMinutes(-1);
                _BarMaximum = (_EndTime - _StartTime).TotalSeconds.ToInt();
                this.trackBar.Maximum = _BarMaximum;
                this.trackBar.Minimum = 0;
                Invalidate();
            }
        }

        private DateTime _EndTime = DateTime.Now;
        [Category("TimeTrackBarControl"), Description("结束时间")]
        public DateTime EndTime
        {
            get
            {
                return _EndTime;
            }
            set
            {
                _EndTime = value;
                //if (_EndTime < _StartTime) _EndTime = _StartTime.AddMinutes(1);
                _BarMaximum = (_EndTime - _StartTime).TotalSeconds.ToInt();
                this.trackBar.Maximum = _BarMaximum;
                this.trackBar.Minimum = 0;
                Invalidate();
            }
        }

        private int _BarMaximum = 0;
        [Category("TimeTrackBarControl"), Description("最大值\r\n默认:0,由开始时间和结束时间决定(只读)")]
        public int BarMaximum
        {
            get
            {
                return _BarMaximum;
            }
        }

        private int _BarCurValue = 0;
        [Category("TimeTrackBarControl"), Description("当前值")]
        public int BarCurValue
        {
            get
            {
                _BarCurValue = this.trackBar.CurValue;
                return _BarCurValue;
            }
            set
            {
                _BarCurValue = value;
                if (_BarCurValue < 0) _BarCurValue = 0;
                if (_BarCurValue > _BarMaximum) _BarCurValue = _BarMaximum;
                this.trackBar.CurValue = _BarCurValue;
                BarCurValueChanged?.Invoke(this, new CurValueEventArgs(_BarCurValue));
            }
        }

        private Color _TimeScaleColor = Color.FromArgb(210, 210, 210);
        [Category("TimeTrackBarControl"), Description("时间刻度的颜色")]
        public Color TimeScaleColor
        {
            get
            {
                return _TimeScaleColor;
            }
            set
            {
                _TimeScaleColor = value;
                Invalidate();
            }
        }

        private int _ScaleInterval = 1200;
        [Category("TimeTrackBarControl"), Description("时间刻度之间相隔秒数,小于零表示自适应\r\n单位:秒")]
        public int ScaleInterval
        {
            get
            {
                return _ScaleInterval;
            }
            set
            {
                _ScaleInterval = value;
                //if (_ScaleInterval <= 0)
                //{
                //    _ScaleInterval = 1800;
                //}
                Invalidate();
            }
        }
        private int _RealScaleInterval = 1200;
        [Category("TimeTrackBarControl"), Description("实际相隔的秒数(为了显示自适应时真实的间隔时间)\r\n单位:秒")]
        public int RealScaleInterval
        {
            get
            {
                _RealScaleInterval = _ScaleInterval > 0 ? _ScaleInterval : _RealScaleInterval;
                return _RealScaleInterval;
            }
        }

        private Color _TimeLabelBackColor = Color.FromArgb(255, 192, 192);
        [Category("TimeTrackBarControl"), Description("时间label背景色")]
        public Color TimeLabelBackColor
        {
            get
            {
                return _TimeLabelBackColor;
            }
            set
            {
                _TimeLabelBackColor = value;
                Invalidate();
            }
        }

        private Color _TimeLabelForeColor = Color.FromArgb(192,255,192);
        [Category("TimeTrackBarControl"), Description("时间label前景色")]
        public Color TimeLabelForeColor
        {
            get
            {
                return _TimeLabelForeColor;
            }
            set
            {
                _TimeLabelForeColor = value;
                Invalidate();
            }
        }
        public void SeekByTime(DateTime time)
        {
            BarCurValue = (time - StartTime).TotalSeconds.ToInt();
        }

        #region 一些系统事件
        protected override void OnPaint(PaintEventArgs e)
        {
            base.OnPaint(e);
            ChangeStyle();
            e.Graphics.SmoothingMode = SmoothingMode.HighQuality;
            Pen pen = new Pen(_TimeScaleColor, 1);
            Brush brush = new SolidBrush(_TimeScaleColor);
            Font font = new Font("微软雅黑", 10, FontStyle.Regular, GraphicsUnit.Point, (byte)134);
            List<TimeScaleLocation> scales = TimeScaleList();
            for (int i = 0; i < scales.Count; i++)
            {
                TimeScaleLocation item = scales[i];
                int length = 15;
                if (_RealScaleInterval * i % 3600 == 0)
                {
                    length = length + trackBar.Height * 1;
                }
                if (i == 0 || i == scales.Count - 1)
                {
                    length = (int)(length + trackBar.Height * 1.5);
                }
                if (i == 0)
                {
                    item.x -= 1;
                }
                e.Graphics.DrawLine(pen, item.x, item.y, item.x, item.y - length);
                e.Graphics.DrawString(item.time.ToString("HH:mm"), font, brush, new Point(item.x - 19, item.y - length - trackBar.Height * 2));
            }
        }

        protected override void OnMouseDown(MouseEventArgs e)
        {
            base.OnMouseDown(e);
        }

        protected override void OnMouseMove(MouseEventArgs e)
        {
            base.OnMouseMove(e);
        }
        protected override void OnMouseUp(MouseEventArgs e)
        {
            base.OnMouseUp(e);
        }
        protected override void OnMouseEnter(EventArgs e)
        {
            base.OnMouseEnter(e);
        }
        protected override void OnMouseLeave(EventArgs e)
        {
            base.OnMouseLeave(e);
        }

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

            int x = (this.Width - this.timeLabel.Width) / 2;
            int y = this.timeLabel.Location.Y;
            this.timeLabel.Location = new Point(x, y);
        }

        /// <summary>
        /// 要划线的坐标
        /// </summary>
        /// <param name="intervalSec"></param>
        /// <returns></returns>
        private List<TimeScaleLocation> TimeScaleList()
        {
            DateTime time = _StartTime;
            if (_ScaleInterval<0)
            {
                _RealScaleInterval = SelfAdaption();
            }
            else
            {
                _RealScaleInterval = _ScaleInterval;
            }
            List<TimeScaleLocation> scales = new List<TimeScaleLocation>();
            TimeScaleLocation start_scale = new TimeScaleLocation(trackBar.Location.X, trackBar.Location.Y + trackBar.Height / 2, _StartTime);
            scales.Add(start_scale);
            while (time.AddSeconds(_RealScaleInterval) < _EndTime)
            {
                time = time.AddSeconds(_RealScaleInterval);
                int val = (time - _StartTime).TotalSeconds.ToInt();
                float radio = val * 1.0f / _BarMaximum;
                int x = trackBar.Location.X + Convert.ToInt32(trackBar.Width * radio);
                int y = trackBar.Location.Y;
                TimeScaleLocation scale = new TimeScaleLocation(x, y, time);
                scales.Add(scale);
            }
            int end_x = trackBar.Location.X + trackBar.Width;
            int end_y = trackBar.Location.Y + trackBar.Height / 2;
            TimeScaleLocation end_scale = new TimeScaleLocation(end_x, end_y, _EndTime);
            scales.Add(end_scale);
            return scales;
        }

        /// <summary>
        /// 微软雅黑 regular 10F 23:56分约占38个像素,现定为45个像素为最小值,时间刻度:60秒为最小值
        /// </summary>
        /// <returns></returns>
        private int SelfAdaption()
        {
            float radio = 45 * 1.0f / trackBar.Width;//45个像素占进度条总长的比例
            double interval = (_EndTime - _StartTime).TotalSeconds * radio;//这个比例下,占多长的时间
            if (interval<=60)
            {
                interval = 60;
            }
            else if (interval>60 && interval <= 300)
            {
                interval = 300;
            }
            else if (interval >300 && interval <= 600)
            {
                interval = 600;
            }
            else if (interval >600 && interval <= 1200)
            {
                interval = 1200;
            }
            else if (interval > 1200 && interval <= 1800)
            {
                interval = 1800;
            }
            else if (interval > 1800 && interval <= 3600)
            {
                interval = 3600;
            }
            return Convert.ToInt32(interval);
        }

        private void ChangeStyle()
        {
            this.timeLabel.BackColor = _TimeLabelBackColor;
            this.timeLabel.ForeColor = _TimeLabelForeColor;
        }
        #endregion

        /// <summary>
        /// 为了实时改变显示的值
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void TrackBar_CurValueChanged(object sender, CurValueEventArgs e)
        {
            BarCurValueChanged?.Invoke(this, new CurValueEventArgs(e.Value));
            timeLabel.Text = _StartTime.AddSeconds(e.Value).ToString("HH:mm:ss");
        }
    }
}
哦,要和大佬的例子放在一起,因为借用了他的控件和事件。还有,大佬的文章末尾有大佬代码的下载链接,嘿嘿~

没有七个#号的样式
####### 不信你看

转载请注明出处

posted @ 2021-03-16 16:05  小草上飞飞  阅读(248)  评论(1编辑  收藏