C# 创建使用其他用户控件的用户控件
我有一个用户控件,在C# 创建使用其他用户控件的用户控件,c#,forms,visual-studio,user-controls,C#,Forms,Visual Studio,User Controls,我有一个用户控件,在Min和Max的范围内充当一个带有SelectedMin、Value和SelectedMax的轨迹栏 现在,我想创建另一个用户控件作为上述用户控件的外壳,以便包含悬停标签以显示每个选定值的当前值 我想在一个单独的用户控件中实现这一点,因为在TrackBar用户控件中,为了给值标签腾出空间而向下移动似乎是一件痛苦的事情 这是我当前的CustomTrackBar.cs用户控件。对不起,太乱了: public partial class CustomTrackBar : UserC
Min
和Max
的范围内充当一个带有SelectedMin
、Value
和SelectedMax
的轨迹栏
现在,我想创建另一个用户控件作为上述用户控件的外壳,以便包含悬停标签以显示每个选定值的当前值
我想在一个单独的用户控件中实现这一点,因为在TrackBar用户控件中,为了给值标签腾出空间而向下移动似乎是一件痛苦的事情
这是我当前的CustomTrackBar.cs
用户控件。对不起,太乱了:
public partial class CustomTrackBar : UserControl
{
#region variables
private int min = 0;
private int max = 1000;
private int selectedMin = 0;
private int selectedMax;
private int value;
private int sliderWidth = 2;
#endregion
#region accessors
public int Min
{
get { return min; }
set { min = value; Invalidate(); }
}
public int Max
{
get { return max; }
set { max = value; Invalidate(); }
}
public int SelectedMin
{
get { return selectedMin; }
set
{
selectedMin = value;
if (AnythingChanged != null)
{
//SelectionChanged(this, null);
AnythingChanged(this, null);
}
MinChanged = true;
Invalidate();
}
}
public int SelectedMax
{
get { return selectedMax; }
set
{
selectedMax = value;
if (AnythingChanged != null)
{
//SelectionChanged(this, null);
AnythingChanged(this, null);
}
MaxChanged = true;
Invalidate();
MaxChanged = false;
}
}
public int Value
{
get { return value; }
set
{
this.value = value;
if (AnythingChanged != null)
{
//ValueChanged(this, null);
AnythingChanged(this, null);
}
ValueChanged = true;
Invalidate();
}
}
public int SliderWidth
{
get { return sliderWidth; }
set
{
this.sliderWidth = value;
Invalidate();
}
}
public Boolean MinChanged
{
get; private set;
}
public Boolean ValueChanged
{
get; private set;
}
public Boolean MaxChanged
{
get; private set;
}
#endregion
//Fired when SelectedMin or SelectedMax changes.
//public event EventHandler SelectionChanged;
//Fired when Value changes.
//public event EventHandler ValueChanged;
//Fired if anything changes
public event EventHandler AnythingChanged;
public CustomTrackBar()
{
//Set default values
Value = (Max - Min) / 2;
SelectedMax = Max;
SliderWidth = SliderWidth / (Max - Min); //this line is horrible
InitializeComponent();
//Avoid flickering
SetStyle(ControlStyles.AllPaintingInWmPaint, true);
SetStyle(ControlStyles.OptimizedDoubleBuffer, true);
//Events
Paint += new PaintEventHandler(CustomTrackBar_Paint);
MouseDown += new MouseEventHandler(CustomTrackBar_MouseDown);
MouseMove += new MouseEventHandler(CustomTrackBar_MouseMove);
}
//Create a rectangle
void CustomTrackBar_Paint(object sender, PaintEventArgs e)
{
//paint background in white
e.Graphics.FillRectangle(Brushes.White, ClientRectangle);
//Create a rectangle object
Rectangle selectionRect = new Rectangle(
0,
0,
Width,
Height);
/*
Rectangle selectionRect = new Rectangle(
(SelectedMin - Min) * Width / (Max - Min),
15,
(SelectedMax - selectedMin) * Width / (Max - Min),
Height - 30);
*/
//paint the rectangle object
e.Graphics.FillRectangle(Brushes.GreenYellow, selectionRect);
//Again how does this work?
Rectangle firstFrameRect = new Rectangle(
(SelectedMin - SliderWidth/2) * Width / (Max - Min),
0,
SliderWidth * Width / (Max - Min),
Height
);
e.Graphics.FillRectangle(Brushes.DarkBlue, firstFrameRect);
Rectangle lastFrameRect = new Rectangle(
(SelectedMax - SliderWidth/2) * Width / (Max - Min),
0,
SliderWidth * Width / (Max - Min),
Height
);
/*
Rectangle lastFrameRect = new Rectangle(
SelectedMax * Width / (Max - Min),
0,
5 * Width / (Max - Min),
Height
);
*/
e.Graphics.FillRectangle(Brushes.OrangeRed, lastFrameRect);
//draw a black frame around our control
e.Graphics.DrawRectangle(Pens.Black, 0, 0, Width - 1, Height - 1);
//draw a simple vertical line at the Value position
e.Graphics.DrawLine(Pens.Black,
(Value - Min) * Width / (Max - Min) - 5,
0,
(Value - Min) * Width / (Max - Min) - 5,
Height);
}
void CustomTrackBar_MouseDown(object sender, MouseEventArgs e)
{
//check where the user clicked so we can decide which thumb to move
int pointedValue = Min + e.X * (Max - Min) / Width;
int distValue = Math.Abs(pointedValue - Value);
int distMin = Math.Abs(pointedValue - SelectedMin);
int distMax = Math.Abs(pointedValue - SelectedMax);
int minDist = Math.Min(distValue, Math.Min(distMin, distMax));
if (minDist == distValue)
movingMode = MovingMode.MovingValue; //this should only move when video plays
else if (minDist == distMin)
movingMode = MovingMode.MovingMin;
else
movingMode = MovingMode.MovingMax;
//call this to refreh the position of the selected thumb
CustomTrackBar_MouseMove(sender, e);
}
void CustomTrackBar_MouseMove(object sender, MouseEventArgs e)
{
//if the left button is pushed, move the selected thumb
if (e.Button != MouseButtons.Left)
return;
int pointedValue = Min + e.X * (Max - Min) / Width;
if (movingMode == MovingMode.MovingValue)
{
if (pointedValue <= Max && pointedValue >= Min)
Value = pointedValue;
}
else if (movingMode == MovingMode.MovingMin)
{
if (pointedValue < SelectedMax && pointedValue >= Min)
SelectedMin = pointedValue;
}
else if (movingMode == MovingMode.MovingMax)
{
if (pointedValue > SelectedMin && pointedValue <= Max)
SelectedMax = pointedValue;
}
}
//To know which thumb is moving
enum MovingMode { MovingValue, MovingMin, MovingMax }
MovingMode movingMode;
public String AllValues()
{
return String.Format("{0}\t{1}\t{2}", SelectedMin, Value, SelectedMax);
}
}
公共部分类CustomTrackBar:UserControl
{
#区域变量
私有int min=0;
私有整数最大值=1000;
private int selectedMin=0;
私有int-selectedMax;
私有int值;
私有int滑块宽度=2;
#端区
#区域存取器
公共int Min
{
获取{return min;}
设置{min=value;使无效();}
}
公共整数最大值
{
获取{return max;}
设置{max=value;Invalidate();}
}
公共int-SelectedMin
{
获取{return selectedMin;}
设置
{
selectedMin=值;
if(AnythingChanged!=null)
{
//SelectionChanged(此为空);
AnythingChanged(此为空);
}
MinChanged=true;
使无效();
}
}
公共整数选择最大值
{
获取{return selectedMax;}
设置
{
selectedMax=值;
if(AnythingChanged!=null)
{
//SelectionChanged(此为空);
AnythingChanged(此为空);
}
MaxChanged=true;
使无效();
MaxChanged=false;
}
}
公共整数值
{
获取{返回值;}
设置
{
这个值=值;
if(AnythingChanged!=null)
{
//ValueChanged(此为空);
AnythingChanged(此为空);
}
ValueChanged=true;
使无效();
}
}
公共整数滑块宽度
{
获取{return sliderWidth;}
设置
{
this.sliderWidth=值;
使无效();
}
}
公共布尔值已更改
{
获得;私人设置;
}
公共布尔值已更改
{
获得;私人设置;
}
公共布尔MaxChanged
{
获得;私人设置;
}
#端区
//当SelectedMin或SelectedMax更改时激发。
//公共事件处理程序选择已更改;
//值更改时激发。
//公共事件处理程序值已更改;
//如果有什么变化就被解雇
public event EventHandler AnythingChanged;
公共自定义轨迹栏()
{
//设置默认值
值=(最大-最小)/2;
选择最大值=最大值;
SliderWidth=SliderWidth/(Max-Min);//这行太可怕了
初始化组件();
//避免闪烁
设置样式(ControlStyles.AllPaintingInWmPaint,true);
SetStyle(ControlStyles.OptimizedDoubleBuffer,true);
//事件
Paint+=新的PaintEventHandler(CustomTrackBar_Paint);
MouseDown+=新的MouseEventHandler(CustomTrackBar_MouseDown);
MouseMove+=新的MouseEventHandler(CustomTrackBar\u MouseMove);
}
//创建一个矩形
void CustomTrackBar_Paint(对象发送器,PaintEventArgs e)
{
//将背景漆成白色
e、 图形。填充矩形(画笔。白色,ClientRectangle);
//创建一个矩形对象
矩形选择矩形=新矩形(
0,
0,
宽度,
高度);
/*
矩形选择矩形=新矩形(
(选择最小值)*宽度/(最大值-最小值),
15,
(选择最大-选择最小)*宽度/(最大-最小),
身高(30),;
*/
//绘制矩形对象
e、 Graphics.FillRectangle(画笔.绿黄色,selectionRect);
//再说一遍,这是怎么回事?
矩形firstFrameRect=新矩形(
(选择最小-滑块宽度/2)*宽度/(最大-最小),
0,
滑块宽度*宽度/(最大-最小),
高度
);
e、 Graphics.FillRectangle(笔刷.DarkBlue,firstFrameRect);
矩形lastFrameRect=新矩形(
(选择最大-滑块宽度/2)*宽度/(最大-最小),
0,
滑块宽度*宽度/(最大-最小),
高度
);
/*
矩形lastFrameRect=新矩形(
选择最大*宽度/(最大-最小),
0,
5*宽度/(最大-最小),
高度
);
*/
e、 Graphics.FillRectangle(画笔.OrangeRed,lastFrameRect);
//在控件周围画一个黑色边框
e、 图形.绘图矩形(钢笔.黑色,0,0,宽-1,高-1);
//在值位置绘制一条简单的垂直线
e、 图形.抽绳(黑色笔),
(最小值)*宽度/(最大值-最小值)-5,
0,
(最小值)*宽度/(最大值-最小值)-5,
高度);
}
void CustomTrackBar_MouseDown(对象发送器,MouseEventArgs e)
{
//检查用户单击的位置,以便我们可以决定移动哪个拇指
int pointedValue=Min+e.X*(Max-Min)/宽度;
int distValue=Math.Abs(pointedValue-Value);
int distMin=Math.Abs(pointedValue-SelectedMin);
int distMax=Math.Abs(pointedValue-SelectedMax);
int minDist=Math.Min(distValue,Math.Min(distMin,distMax));
if(minDist==distValue)
movingMode=movingMode.MovingValue;//仅在视频播放时移动
else if(minDist==dist
public partial class CustomTrackBar : Panel
{
private Panel backdrop;
private Panel minBar;
private Panel maxBar;
private Panel currentBar;
private Label minDisplay;
private Label maxDisplay;
private Label currentDisplay;
public CustomTrackBar()
{
InitializeComponent(); // This should almost always be first.
backdrop = new Panel() {
BackColor = Color.LightGreen,
// set position, size, etc.
};
// add event handlers to backdrop...
Controls.Add(backdrop);
// repeat for minBar, maxBar, etc.
SizeChanged += (sender, args) => {
Update();
};
// ... remaining initialization logic.
}
private void Update()
{
// adjust the position and size of each inner control...
}
}