C# 自定义时间进度条
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2022-11-01 18:31:23
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 ......
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。 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，修改办法放在收获中
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