// COPYRIGHT (C) Tom. ALL RIGHTS RESERVED.
|
// THE AntdUI PROJECT IS AN WINFORM LIBRARY LICENSED UNDER THE Apache-2.0 License.
|
// LICENSED UNDER THE Apache License, VERSION 2.0 (THE "License")
|
// YOU MAY NOT USE THIS FILE EXCEPT IN COMPLIANCE WITH THE License.
|
// YOU MAY OBTAIN A COPY OF THE LICENSE AT
|
//
|
// http://www.apache.org/licenses/LICENSE-2.0
|
//
|
// UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING, SOFTWARE
|
// DISTRIBUTED UNDER THE LICENSE IS DISTRIBUTED ON AN "AS IS" BASIS,
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
// SEE THE LICENSE FOR THE SPECIFIC LANGUAGE GOVERNING PERMISSIONS AND
|
// LIMITATIONS UNDER THE License.
|
// GITEE: https://gitee.com/antdui/AntdUI
|
// GITHUB: https://github.com/AntdUI/AntdUI
|
// CSDN: https://blog.csdn.net/v_132
|
// QQ: 17379620
|
|
using System;
|
using System.Drawing;
|
using System.Windows.Forms;
|
|
namespace AntdUI
|
{
|
public class ScrollY
|
{
|
IControl? control;
|
|
public ScrollY(IControl _control)
|
{
|
Invalidate = () =>
|
{
|
_control.Invalidate();
|
};
|
control = _control;
|
}
|
|
public ScrollY(FlowLayoutPanel _control)
|
{
|
SIZE = SystemInformation.VerticalScrollBarWidth;
|
Invalidate = () =>
|
{
|
_control.Invalidate(Rect);
|
};
|
}
|
public ScrollY(Control _control)
|
{
|
Invalidate = () =>
|
{
|
_control.Invalidate();
|
};
|
}
|
public ScrollY(ILayeredForm _form)
|
{
|
Invalidate = () =>
|
{
|
_form.Print();
|
};
|
Gap = Back = false;
|
}
|
|
Action Invalidate;
|
|
public bool Back = true;
|
public bool Gap = true;
|
|
#region 属性
|
|
bool show = false;
|
public bool Show
|
{
|
get => show;
|
set
|
{
|
if (show == value) return;
|
show = value;
|
if (!value) val = 0;
|
}
|
}
|
|
public Rectangle Rect;
|
public RectangleF Slider;
|
|
internal float val = 0;
|
public float SetValue(float value)
|
{
|
if (value < 0) return 0;
|
if (value > VrValueI) return VrValueI;
|
return value;
|
}
|
/// <summary>
|
/// 滚动条进度
|
/// </summary>
|
public float Value
|
{
|
get => val;
|
set
|
{
|
var _val = SetValue(value);
|
if (val == _val) return;
|
val = _val;
|
Invalidate();
|
}
|
}
|
|
/// <summary>
|
/// 虚拟高度
|
/// </summary>
|
public float VrValue { get; set; } = 0F;
|
public float VrValueI { get; set; } = 0F;
|
public int Height { get; set; }
|
|
/// <summary>
|
/// 设置容器虚拟高度
|
/// </summary>
|
/// <param name="len">总Y</param>
|
/// <param name="height">容器高度</param>
|
public void SetVrSize(float len, int height)
|
{
|
Height = height;
|
if (len > 0 && len > height)
|
{
|
if (ShowX) len += SIZE;
|
VrValueI = len - height;
|
VrValue = len;
|
Show = VrValue > height;
|
if (Show)
|
{
|
if (val > (len - height)) Value = (len - height);
|
}
|
}
|
else
|
{
|
VrValue = VrValueI = 0F;
|
Show = false;
|
}
|
}
|
|
/// <summary>
|
/// 设置容器虚拟高度
|
/// </summary>
|
/// <param name="len">总Y</param>
|
public void SetVrSize(float len)
|
{
|
SetVrSize(len, Rect.Height);
|
}
|
|
#endregion
|
|
public int SIZE { get; set; } = 20;
|
public bool ShowX { get; set; }
|
public virtual void SizeChange(Rectangle rect)
|
{
|
Rect = new Rectangle(rect.Right - SIZE, rect.Y, SIZE, rect.Height);
|
}
|
|
/// <summary>
|
/// 渲染滚动条竖
|
/// </summary>
|
/// <param name="g"></param>
|
public virtual void Paint(Graphics g)
|
{
|
Paint(g, Style.Db.TextBase);
|
}
|
public virtual void Paint(Graphics g, Color baseColor)
|
{
|
if (Show)
|
{
|
if (Back)
|
{
|
using (var brush = new SolidBrush(Color.FromArgb(10, baseColor)))
|
{
|
if (ShowX) g.FillRectangle(brush, new Rectangle(Rect.X, Rect.Y, Rect.Width, Rect.Height - SIZE));
|
else g.FillRectangle(brush, Rect);
|
//g.FillRectangle(brush, Rect);
|
}
|
}
|
float height = (Rect.Height / VrValue) * Rect.Height;
|
if (height < SIZE) height = SIZE;
|
if (Gap) height -= 12;
|
float y = val == 0 ? 0 : (val / (VrValue - Rect.Height)) * ((ShowX ? (Rect.Height - SIZE) : Rect.Height) - height);
|
if (Hover) Slider = new RectangleF(Rect.X + 6, Rect.Y + y, 8, height);
|
else Slider = new RectangleF(Rect.X + 7, Rect.Y + y, 6, height);
|
if (Gap)
|
{
|
if (Slider.Y < 6) Slider.Y = 6;
|
else if (Slider.Y > (ShowX ? (Rect.Height - SIZE) : Rect.Height) - height - 6) Slider.Y = (ShowX ? (Rect.Height - SIZE) : Rect.Height) - height - 6;
|
}
|
using (var brush = new SolidBrush(Color.FromArgb(141, baseColor)))
|
{
|
using (var path = Slider.RoundPath(Slider.Width))
|
{
|
g.FillPath(brush, path);
|
}
|
}
|
}
|
}
|
|
public bool ShowDown = false;
|
bool hover = false;
|
bool Hover
|
{
|
get => hover;
|
set
|
{
|
if (hover == value) return;
|
hover = value;
|
Invalidate();
|
}
|
}
|
public virtual bool MouseDown(Point e)
|
{
|
if (Show && Rect.Contains(e))
|
{
|
if (!Slider.Contains(e))
|
{
|
float y = (e.Y - Slider.Height / 2F) / Rect.Height;
|
Value = y * VrValue;
|
}
|
ShowDown = true;
|
return false;
|
}
|
return true;
|
}
|
public virtual bool MouseDown(Point e, Action<float> cal)
|
{
|
if (Show && Rect.Contains(e))
|
{
|
if (!Slider.Contains(e))
|
{
|
float y = (e.Y - Slider.Height / 2F) / Rect.Height;
|
var old_value = val;
|
Value = y * VrValue;
|
if (old_value != val) cal(val);
|
}
|
ShowDown = true;
|
return false;
|
}
|
return true;
|
}
|
|
public virtual bool MouseUp(Point e)
|
{
|
ShowDown = false;
|
return true;
|
}
|
|
public virtual bool MouseMove(Point e)
|
{
|
if (ShowDown)
|
{
|
Hover = true;
|
float y = (e.Y - Slider.Height / 2F) / Rect.Height;
|
Value = y * VrValue;
|
return false;
|
}
|
else if (Show && Rect.Contains(e))
|
{
|
Hover = true;
|
control?.SetCursor(false);
|
return false;
|
}
|
else Hover = false;
|
return true;
|
}
|
|
public virtual bool MouseMove(Point e, Action<float> cal)
|
{
|
if (ShowDown)
|
{
|
Hover = true;
|
float y = (e.Y - Slider.Height / 2F) / Rect.Height;
|
var old_value = val;
|
Value = y * VrValue;
|
if (old_value != val) cal(val);
|
return false;
|
}
|
else if (Show && Rect.Contains(e))
|
{
|
Hover = true;
|
control?.SetCursor(false);
|
return false;
|
}
|
else Hover = false;
|
return true;
|
}
|
|
public bool MouseWheel(int delta)
|
{
|
if (Show && delta != 0)
|
{
|
Value -= delta;//120
|
return true;
|
}
|
return false;
|
}
|
|
public void Leave()
|
{
|
Hover = false;
|
}
|
}
|
}
|
