322 lines
9.7 KiB
C#
322 lines
9.7 KiB
C#
/******************************************************************************
|
||
* SunnyUI 开源控件库、工具类库、扩展类库、多页面开发框架。
|
||
* CopyRight (C) 2012-2025 ShenYongHua(沈永华).
|
||
* QQ群：56829229 QQ：17612584 EMail：SunnyUI@QQ.Com
|
||
*
|
||
* Blog: https://www.cnblogs.com/yhuse
|
||
* Gitee: https://gitee.com/yhuse/SunnyUI
|
||
* GitHub: https://github.com/yhuse/SunnyUI
|
||
*
|
||
* SunnyUI.dll can be used for free under the GPL-3.0 license.
|
||
* If you use this code, please keep this note.
|
||
* 如果您使用此代码，请保留此说明。
|
||
******************************************************************************
|
||
* 文件名称: UIHorScrollBarEx.cs
|
||
* 文件说明: 水平滚动条
|
||
* 当前版本: V3.1
|
||
* 创建日期: 2020-08-29
|
||
*
|
||
* 2020-08-29: V2.2.7 新增水平滚动条
|
||
* 2022-03-19: V3.1.1 重构主题配色
|
||
* 2022-11-13: V3.2.8 增加了可设置水平滚动条高度的属性
|
||
******************************************************************************/
|
||
|
||
using System;
|
||
using System.ComponentModel;
|
||
using System.Drawing;
|
||
using System.Drawing.Drawing2D;
|
||
using System.Windows.Forms;
|
||
|
||
namespace Sunny.UI
|
||
{
|
||
[ToolboxItem(true)]
|
||
[Description("水平滚动条控件")]
|
||
public class UIHorScrollBarEx : UIControl
|
||
{
|
||
public UIHorScrollBarEx()
|
||
{
|
||
SetStyleFlags(true, false);
|
||
ShowText = false;
|
||
ShowRect = false;
|
||
Height = ScrollBarInfo.HorizontalScrollBarHeight() + 1;
|
||
|
||
fillColor = UIStyles.Blue.ScrollBarFillColor;
|
||
foreColor = UIStyles.Blue.ScrollBarForeColor;
|
||
fillHoverColor = UIStyles.Blue.ScrollBarFillHoverColor;
|
||
fillPressColor = UIStyles.Blue.ScrollBarFillPressColor;
|
||
}
|
||
|
||
private int fillHeight = 6;
|
||
|
||
[DefaultValue(6)]
|
||
public int FillHeight
|
||
{
|
||
get => fillHeight;
|
||
set
|
||
{
|
||
fillHeight = Math.Max(6, value);
|
||
Invalidate();
|
||
}
|
||
}
|
||
|
||
private int maximum = 100;
|
||
[DefaultValue(100)]
|
||
public int Maximum
|
||
{
|
||
get => maximum;
|
||
set
|
||
{
|
||
maximum = value.GetLowerLimit(2);
|
||
Invalidate();
|
||
}
|
||
}
|
||
[DefaultValue(10)]
|
||
public int LargeChange { get; set; } = 10;
|
||
|
||
private int thisValue;
|
||
public event EventHandler ValueChanged;
|
||
|
||
[DefaultValue(0)]
|
||
public int Value
|
||
{
|
||
get => thisValue;
|
||
set
|
||
{
|
||
thisValue = value.GetLowerLimit(0);
|
||
thisValue = value.GetUpperLimit(Maximum - BoundsWidth);
|
||
Invalidate();
|
||
}
|
||
}
|
||
|
||
private int boundsWidth = 10;
|
||
[DefaultValue(10)]
|
||
public int BoundsWidth
|
||
{
|
||
get => boundsWidth;
|
||
set
|
||
{
|
||
boundsWidth = value.GetLowerLimit(1);
|
||
Invalidate();
|
||
}
|
||
}
|
||
|
||
public int LeftButtonPos => 16;
|
||
|
||
public int RightButtonPos => Width - 16;
|
||
|
||
/// <summary>
|
||
/// 绘制填充颜色
|
||
/// </summary>
|
||
/// <param name="g">绘图图面</param>
|
||
/// <param name="path">绘图路径</param>
|
||
protected override void OnPaintFill(Graphics g, GraphicsPath path)
|
||
{
|
||
base.OnPaintFill(g, path);
|
||
g.Clear(fillColor);
|
||
|
||
DrawUpDownArrow(g, true);
|
||
DrawUpDownArrow(g, false);
|
||
|
||
DrawValueBar(g);
|
||
}
|
||
|
||
private void DrawValueBar(Graphics g)
|
||
{
|
||
Color clr = foreColor;
|
||
if (inCenterArea && IsPress)
|
||
{
|
||
clr = fillPressColor;
|
||
}
|
||
|
||
int left = 16 + Value * (Width - 32) / Maximum;
|
||
int width = BoundsWidth * (Width - 32) / Maximum;
|
||
|
||
g.SetHighQuality();
|
||
int h = Math.Min(Height, FillHeight);
|
||
g.FillRoundRectangle(clr, new Rectangle(left, Height / 2 - h / 2, width, h), 5);
|
||
g.SetDefaultQuality();
|
||
}
|
||
|
||
private Rectangle GetUpRect()
|
||
{
|
||
var rect = new Rectangle(1, 1, 16, Height - 2);
|
||
return rect;
|
||
}
|
||
|
||
private Rectangle GetDownRect()
|
||
{
|
||
return new Rectangle(Width - 17, 1, 16, Height - 2);
|
||
}
|
||
|
||
/// <summary>
|
||
/// 重载鼠标按下事件
|
||
/// </summary>
|
||
/// <param name="e">鼠标参数</param>
|
||
protected override void OnMouseDown(MouseEventArgs e)
|
||
{
|
||
base.OnMouseDown(e);
|
||
IsPress = true;
|
||
|
||
if (inLeftArea)
|
||
{
|
||
int value = (Value - LargeChange).GetLimit(0, Maximum - BoundsWidth);
|
||
Value = value;
|
||
ValueChanged?.Invoke(this, EventArgs.Empty);
|
||
}
|
||
|
||
if (inRightArea)
|
||
{
|
||
int value = (Value + LargeChange).GetLimit(0, Maximum - BoundsWidth);
|
||
Value = value;
|
||
ValueChanged?.Invoke(this, EventArgs.Empty);
|
||
}
|
||
|
||
if (inCenterArea)
|
||
{
|
||
int x = BoundsWidth * (Width - 32) / Maximum;
|
||
int value = (e.Location.X - x / 2) * maximum / (Width - 32);
|
||
value = value.GetLimit(0, Maximum - BoundsWidth);
|
||
Value = value;
|
||
ValueChanged?.Invoke(this, EventArgs.Empty);
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 重载鼠标抬起事件
|
||
/// </summary>
|
||
/// <param name="e">鼠标参数</param>
|
||
protected override void OnMouseUp(MouseEventArgs e)
|
||
{
|
||
base.OnMouseUp(e);
|
||
IsPress = false;
|
||
Invalidate();
|
||
}
|
||
|
||
/// <summary>
|
||
/// 重载鼠标离开事件
|
||
/// </summary>
|
||
/// <param name="e">鼠标参数</param>
|
||
protected override void OnMouseLeave(EventArgs e)
|
||
{
|
||
base.OnMouseLeave(e);
|
||
IsPress = false;
|
||
Invalidate();
|
||
}
|
||
|
||
/// <summary>
|
||
/// 重载鼠标进入事件
|
||
/// </summary>
|
||
/// <param name="e">鼠标参数</param>
|
||
protected override void OnMouseEnter(EventArgs e)
|
||
{
|
||
base.OnMouseEnter(e);
|
||
Invalidate();
|
||
}
|
||
|
||
private void DrawUpDownArrow(Graphics g, bool isUp)
|
||
{
|
||
Color clr_arrow = foreColor;
|
||
if ((inLeftArea || inRightArea) && IsPress)
|
||
{
|
||
clr_arrow = fillPressColor;
|
||
}
|
||
|
||
g.FillRectangle(fillColor, isUp ? GetUpRect() : GetDownRect());
|
||
g.SetHighQuality();
|
||
using var pen = new Pen(clr_arrow, 2);
|
||
Point pt1, pt2, pt3;
|
||
if (!isUp)
|
||
{
|
||
pt1 = new Point(Width - 16 / 2 - 4, Height / 2 - 4);
|
||
pt2 = new Point(Width - 16 / 2, Height / 2);
|
||
pt3 = new Point(Width - 16 / 2 - 4, Height / 2 + 4);
|
||
}
|
||
else
|
||
{
|
||
pt1 = new Point(16 / 2 + 4 - 1, Height / 2 - 4);
|
||
pt2 = new Point(16 / 2 - 1, Height / 2);
|
||
pt3 = new Point(16 / 2 + 4 - 1, Height / 2 + 4);
|
||
}
|
||
|
||
g.DrawLines(pen, new[] { pt1, pt2, pt3 });
|
||
g.SetDefaultQuality();
|
||
}
|
||
|
||
private bool inLeftArea, inRightArea, inCenterArea;
|
||
|
||
/// <summary>
|
||
/// 重载鼠标移动事件
|
||
/// </summary>
|
||
/// <param name="e">鼠标参数</param>
|
||
protected override void OnMouseMove(MouseEventArgs e)
|
||
{
|
||
base.OnMouseMove(e);
|
||
inLeftArea = e.Location.X < LeftButtonPos;
|
||
inRightArea = e.Location.X > RightButtonPos;
|
||
inCenterArea = e.Location.X >= LeftButtonPos && e.Location.X <= RightButtonPos;
|
||
|
||
if (inCenterArea && IsPress)
|
||
{
|
||
int x = BoundsWidth * (Width - 32) / Maximum;
|
||
int value = (e.Location.X - x / 2) * maximum / (Width - 32);
|
||
value = value.GetLimit(0, Maximum - BoundsWidth);
|
||
Value = value;
|
||
ValueChanged?.Invoke(this, EventArgs.Empty);
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 设置主题样式
|
||
/// </summary>
|
||
/// <param name="uiColor">主题样式</param>
|
||
public override void SetStyleColor(UIBaseStyle uiColor)
|
||
{
|
||
base.SetStyleColor(uiColor);
|
||
|
||
fillColor = uiColor.ScrollBarFillColor;
|
||
foreColor = uiColor.ScrollBarForeColor;
|
||
fillHoverColor = uiColor.ScrollBarFillHoverColor;
|
||
fillPressColor = uiColor.ScrollBarFillPressColor;
|
||
}
|
||
|
||
|
||
/// <summary>
|
||
/// 字体颜色
|
||
/// </summary>
|
||
[Description("字体颜色"), Category("SunnyUI")]
|
||
[DefaultValue(typeof(Color), "80, 160, 255")]
|
||
public override Color ForeColor
|
||
{
|
||
get => foreColor;
|
||
set => SetForeColor(value);
|
||
}
|
||
|
||
/// <summary>
|
||
/// 填充颜色，当值为背景色或透明色或空值则不填充
|
||
/// </summary>
|
||
[Description("填充颜色"), Category("SunnyUI")]
|
||
[DefaultValue(typeof(Color), "243, 249, 255")]
|
||
public Color FillColor
|
||
{
|
||
get => fillColor;
|
||
set => SetFillColor(value);
|
||
}
|
||
|
||
[Description("鼠标移上颜色"), Category("SunnyUI")]
|
||
[DefaultValue(typeof(Color), "115, 179, 255")]
|
||
public Color HoverColor
|
||
{
|
||
get => fillHoverColor;
|
||
set => SetFillHoverColor(value);
|
||
}
|
||
|
||
[Description("鼠标按下颜色"), Category("SunnyUI")]
|
||
[DefaultValue(typeof(Color), "64, 128, 204")]
|
||
public Color PressColor
|
||
{
|
||
get => fillPressColor;
|
||
set => SetFillPressColor(value);
|
||
}
|
||
}
|
||
}
|