576 lines
21 KiB
C#
576 lines
21 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) 2012-2022 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: UIBarChart.cs
|
||
* 文件说明: 柱状图
|
||
* 当前版本: V3.1
|
||
* 创建日期: 2020-06-06
|
||
*
|
||
* 2020-06-06: V2.2.5 增加文件说明
|
||
* 2020-08-21: V2.2.7 可设置柱状图最小宽度
|
||
* 2021-07-22: V3.0.5 增加更新数据的方法
|
||
* 2021-01-01: V3.0.9 增加柱子上显示数值
|
||
* 2022-03-08: V3.1.1 增加X轴文字倾斜
|
||
* 2022-05-27: V3.1.9 重写Y轴坐标显示
|
||
* 2022-07-29: V3.2.2 数据显示的小数位数重构调整至数据序列 Series.DecimalPlaces
|
||
* 2022-07-30: V3.2.2 坐标轴的小数位数重构调整至坐标轴标签 AxisLabel.DecimalPlaces
|
||
******************************************************************************/
|
||
|
||
using System;
|
||
using System.Collections.Concurrent;
|
||
using System.Collections.Generic;
|
||
using System.ComponentModel;
|
||
using System.Drawing;
|
||
using System.Drawing.Drawing2D;
|
||
using System.Linq;
|
||
using System.Windows.Forms;
|
||
|
||
namespace Sunny.UI
|
||
{
|
||
/// <summary>
|
||
/// 柱状图
|
||
/// </summary>
|
||
[ToolboxItem(true)]
|
||
public class UIBarChart : UIChart
|
||
{
|
||
private bool NeedDraw;
|
||
|
||
/// <summary>
|
||
/// 重载控件尺寸变更
|
||
/// </summary>
|
||
/// <param name="e">参数</param>
|
||
protected override void OnSizeChanged(EventArgs e)
|
||
{
|
||
base.OnSizeChanged(e);
|
||
CalcData();
|
||
}
|
||
|
||
/// <summary>
|
||
/// 刷新显示
|
||
/// </summary>
|
||
public override void Refresh()
|
||
{
|
||
base.Refresh();
|
||
if (Option != null)
|
||
{
|
||
SetOption(Option);
|
||
}
|
||
|
||
CalcData();
|
||
}
|
||
|
||
/// <summary>
|
||
/// 更新数据
|
||
/// </summary>
|
||
/// <param name="seriesName">序列名称</param>
|
||
/// <param name="index">序号</param>
|
||
/// <param name="value">值</param>
|
||
public void Update(string seriesName, int index, double value)
|
||
{
|
||
var series = Option[seriesName];
|
||
if (series != null)
|
||
{
|
||
series.Update(index, value);
|
||
}
|
||
}
|
||
|
||
UILinearScale YScale = new UILinearScale();
|
||
|
||
/// <summary>
|
||
/// 计算数据用于显示
|
||
/// </summary>
|
||
protected override void CalcData()
|
||
{
|
||
Bars.Clear();
|
||
NeedDraw = false;
|
||
if (Option == null || Option.Series == null || Option.SeriesCount == 0) return;
|
||
if (DrawSize.Width <= 0 || DrawSize.Height <= 0) return;
|
||
if (Option.XAxis.Data.Count == 0) return;
|
||
|
||
NeedDraw = true;
|
||
DrawBarWidth = DrawSize.Width * 1.0f / Option.XAxis.Data.Count;
|
||
|
||
double min = double.MaxValue;
|
||
double max = double.MinValue;
|
||
foreach (var series in Option.Series)
|
||
{
|
||
if (series.Data.Count > 0)
|
||
{
|
||
min = Math.Min(min, series.Data.Min());
|
||
max = Math.Max(max, series.Data.Max());
|
||
}
|
||
}
|
||
|
||
if (min > 0 && max > 0 && !Option.YAxis.Scale) min = 0;
|
||
if (min < 0 && max < 0 && !Option.YAxis.Scale) max = 0;
|
||
if (!Option.YAxis.MaxAuto) max = Option.YAxis.Max;
|
||
if (!Option.YAxis.MinAuto) min = Option.YAxis.Min;
|
||
|
||
if (Option.YAxis.MaxAuto && Option.YAxis.MinAuto)
|
||
{
|
||
if (min > 0) min = 0;
|
||
if (max < 0) max = 0;
|
||
|
||
if (min.IsZero() && !max.IsZero())
|
||
{
|
||
max = max * 1.2;
|
||
}
|
||
|
||
if (max.IsZero() && !min.IsZero())
|
||
{
|
||
min = min * 1.2;
|
||
}
|
||
|
||
if (!max.IsZero() && !min.IsZero())
|
||
{
|
||
max = max * 1.2;
|
||
min = min * 1.2;
|
||
}
|
||
}
|
||
|
||
if ((max - min).IsZero())
|
||
{
|
||
if (min.IsZero())
|
||
{
|
||
max = 100;
|
||
min = 0;
|
||
}
|
||
else if (max > 0)
|
||
{
|
||
max = max * 2;
|
||
min = 0;
|
||
}
|
||
else
|
||
{
|
||
max = 0;
|
||
min = min * 2;
|
||
}
|
||
}
|
||
|
||
YScale.Max = max;
|
||
YScale.Min = min;
|
||
YScale.AxisChange();
|
||
|
||
YAxisStart = YScale.Min;
|
||
YAxisEnd = YScale.Max;
|
||
YAxisInterval = YScale.Step;
|
||
double[] YLabels = YScale.CalcLabels();
|
||
float[] labels = YScale.CalcYPixels(YLabels, DrawOrigin.Y, DrawSize.Height);
|
||
YAxisDecimalCount = YScale.Format.Replace("F", "").ToInt();
|
||
|
||
float x1 = DrawBarWidth / (Option.SeriesCount * 2 + Option.SeriesCount + 1);
|
||
float x2 = x1 * 2;
|
||
|
||
for (int i = 0; i < Option.SeriesCount; i++)
|
||
{
|
||
float barX = DrawOrigin.X;
|
||
var series = Option.Series[i];
|
||
Bars.TryAdd(i, new List<BarInfo>());
|
||
for (int j = 0; j < series.Data.Count; j++)
|
||
{
|
||
Color color = ChartStyle.GetColor(i);
|
||
if (series.Colors.Count > 0 && j >= 0 && j < series.Colors.Count)
|
||
color = series.Colors[j];
|
||
|
||
float xx = barX + x1 * (i + 1) + x2 * i + x1;
|
||
float ww = Math.Min(x2, series.MaxWidth);
|
||
xx -= ww / 2.0f;
|
||
|
||
float YZeroPos = YScale.CalcYPixel(0, DrawOrigin.Y, DrawSize.Height);
|
||
float VPos = YScale.CalcYPixel(series.Data[j], DrawOrigin.Y, DrawSize.Height);
|
||
|
||
if (VPos <= YZeroPos)
|
||
{
|
||
Bars[i].Add(new BarInfo()
|
||
{
|
||
Rect = new RectangleF(xx, VPos, ww, (YZeroPos - VPos)),
|
||
Value = series.Data[j],
|
||
Color = color,
|
||
Top = true,
|
||
Series = series,
|
||
});
|
||
}
|
||
else
|
||
{
|
||
Bars[i].Add(new BarInfo()
|
||
{
|
||
Rect = new RectangleF(xx, YZeroPos, ww, (VPos - YZeroPos)),
|
||
Value = series.Data[j],
|
||
Color = color,
|
||
Top = false,
|
||
Series = series,
|
||
});
|
||
}
|
||
|
||
barX += DrawBarWidth;
|
||
}
|
||
}
|
||
|
||
if (Option.ToolTip != null)
|
||
{
|
||
for (int i = 0; i < Option.XAxis.Data.Count; i++)
|
||
{
|
||
string str = Option.XAxis.Data[i];
|
||
foreach (var series in Option.Series)
|
||
{
|
||
str += '\n';
|
||
str += series.Name + " : " + series.Data[i].ToString("F" + series.DecimalPlaces);
|
||
}
|
||
|
||
Bars[0][i].Tips = str;
|
||
}
|
||
}
|
||
}
|
||
|
||
private Point DrawOrigin => new Point(Option.Grid.Left, Height - Option.Grid.Bottom);
|
||
private Size DrawSize => new Size(Width - Option.Grid.Left - Option.Grid.Right, Height - Option.Grid.Top - Option.Grid.Bottom);
|
||
private Rectangle DrawRect => new Rectangle(Option.Grid.Left, Option.Grid.Top, DrawSize.Width, DrawSize.Height);
|
||
|
||
private int selectIndex = -1;
|
||
private float DrawBarWidth;
|
||
private double YAxisStart;
|
||
private double YAxisEnd;
|
||
private double YAxisInterval;
|
||
private int YAxisDecimalCount;
|
||
private readonly ConcurrentDictionary<int, List<BarInfo>> Bars = new ConcurrentDictionary<int, List<BarInfo>>();
|
||
|
||
[DefaultValue(-1), Browsable(false)]
|
||
private int SelectIndex
|
||
{
|
||
get => selectIndex;
|
||
set
|
||
{
|
||
if (Option.ToolTip != null && selectIndex != value)
|
||
{
|
||
selectIndex = value;
|
||
Invalidate();
|
||
}
|
||
|
||
if (selectIndex < 0) tip.Visible = false;
|
||
}
|
||
}
|
||
|
||
/// <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);
|
||
|
||
try
|
||
{
|
||
if (!Option.ToolTip.Visible) return;
|
||
if (e.Location.X > Option.Grid.Left && e.Location.X < Width - Option.Grid.Right
|
||
&& e.Location.Y > Option.Grid.Top &&
|
||
e.Location.Y < Height - Option.Grid.Bottom)
|
||
{
|
||
SelectIndex = (int)((e.Location.X - Option.Grid.Left) / DrawBarWidth);
|
||
}
|
||
else
|
||
{
|
||
SelectIndex = -1;
|
||
}
|
||
|
||
if (SelectIndex >= 0 && Bars.Count > 0)
|
||
{
|
||
if (tip.Text != Bars[0][selectIndex].Tips)
|
||
{
|
||
tip.Text = Bars[0][selectIndex].Tips;
|
||
tip.Size = new Size((int)Bars[0][selectIndex].Size.Width + 4, (int)Bars[0][selectIndex].Size.Height + 4);
|
||
}
|
||
|
||
int x = e.Location.X + 15;
|
||
int y = e.Location.Y + 20;
|
||
if (e.Location.X + 15 + tip.Width > Width - Option.Grid.Right)
|
||
x = e.Location.X - tip.Width - 2;
|
||
if (e.Location.Y + 20 + tip.Height > Height - Option.Grid.Bottom)
|
||
y = e.Location.Y - tip.Height - 2;
|
||
|
||
tip.Left = x;
|
||
tip.Top = y;
|
||
if (!tip.Visible) tip.Visible = Bars[0][selectIndex].Tips.IsValid();
|
||
}
|
||
}
|
||
catch (Exception exception)
|
||
{
|
||
Console.WriteLine(exception);
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 图表参数
|
||
/// </summary>
|
||
[Browsable(false), DefaultValue(null)]
|
||
public UIBarOption Option
|
||
{
|
||
get
|
||
{
|
||
UIOption option = BaseOption ?? EmptyOption;
|
||
return (UIBarOption)option;
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 默认创建空的图表参数
|
||
/// </summary>
|
||
protected override void CreateEmptyOption()
|
||
{
|
||
if (emptyOption != null) return;
|
||
|
||
UIBarOption option = new UIBarOption();
|
||
option.Title = new UITitle();
|
||
option.Title.Text = "SunnyUI";
|
||
option.Title.SubText = "BarChart";
|
||
|
||
//设置Legend
|
||
option.Legend = new UILegend();
|
||
option.Legend.Orient = UIOrient.Horizontal;
|
||
option.Legend.Top = UITopAlignment.Top;
|
||
option.Legend.Left = UILeftAlignment.Left;
|
||
option.Legend.AddData("Bar1");
|
||
option.Legend.AddData("Bar2");
|
||
|
||
var series = new UIBarSeries();
|
||
series.Name = "Bar1";
|
||
series.AddData(1);
|
||
series.AddData(5);
|
||
series.AddData(2);
|
||
series.AddData(4);
|
||
series.AddData(3);
|
||
option.Series.Add(series);
|
||
|
||
series = new UIBarSeries();
|
||
series.Name = "Bar2";
|
||
series.AddData(2);
|
||
series.AddData(1);
|
||
series.AddData(5);
|
||
series.AddData(3);
|
||
series.AddData(4);
|
||
option.Series.Add(series);
|
||
|
||
option.XAxis.Data.Add("Mon");
|
||
option.XAxis.Data.Add("Tue");
|
||
option.XAxis.Data.Add("Wed");
|
||
option.XAxis.Data.Add("Thu");
|
||
option.XAxis.Data.Add("Fri");
|
||
|
||
option.ToolTip = new UIBarToolTip();
|
||
option.ToolTip.AxisPointer.Type = UIAxisPointerType.Shadow;
|
||
|
||
emptyOption = option;
|
||
}
|
||
|
||
/// <summary>
|
||
/// 绘制图表参数
|
||
/// </summary>
|
||
/// <param name="g">绘制图面</param>
|
||
protected override void DrawOption(Graphics g)
|
||
{
|
||
if (Option == null) return;
|
||
if (!NeedDraw) return;
|
||
|
||
if (Option.ToolTip != null && Option.ToolTip.AxisPointer.Type == UIAxisPointerType.Shadow) DrawToolTip(g);
|
||
|
||
DrawSeries(g, Option.Series);
|
||
DrawAxis(g);
|
||
DrawTitle(g, Option.Title);
|
||
if (Option.ToolTip != null && Option.ToolTip.AxisPointer.Type == UIAxisPointerType.Line) DrawToolTip(g);
|
||
|
||
DrawLegend(g, Option.Legend);
|
||
DrawAxisScales(g);
|
||
}
|
||
|
||
/// <summary>
|
||
/// 绘制工具提示
|
||
/// </summary>
|
||
/// <param name="g">绘制图面</param>
|
||
protected virtual void DrawToolTip(Graphics g)
|
||
{
|
||
if (selectIndex < 0) return;
|
||
if (Option.ToolTip.AxisPointer.Type == UIAxisPointerType.Line)
|
||
{
|
||
float x = DrawOrigin.X + SelectIndex * DrawBarWidth + DrawBarWidth / 2.0f;
|
||
g.DrawLine(ChartStyle.ToolTipShadowColor, x, DrawOrigin.Y, x, Option.Grid.Top);
|
||
}
|
||
|
||
if (Option.ToolTip.AxisPointer.Type == UIAxisPointerType.Shadow)
|
||
{
|
||
float x = DrawOrigin.X + SelectIndex * DrawBarWidth;
|
||
g.FillRectangle(ChartStyle.ToolTipShadowColor, x, Option.Grid.Top, DrawBarWidth, Height - Option.Grid.Top - Option.Grid.Bottom);
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 绘制坐标轴
|
||
/// </summary>
|
||
/// <param name="g">绘制图面</param>
|
||
protected virtual void DrawAxis(Graphics g)
|
||
{
|
||
g.FillRectangle(FillColor, Option.Grid.Left, 1, Width - Option.Grid.Left - Option.Grid.Right, Option.Grid.Top);
|
||
g.FillRectangle(FillColor, Option.Grid.Left, Height - Option.Grid.Bottom, Width - Option.Grid.Left - Option.Grid.Right, Option.Grid.Bottom - 1);
|
||
|
||
if (YAxisStart >= 0) g.DrawLine(ForeColor, DrawOrigin, new Point(DrawOrigin.X + DrawSize.Width, DrawOrigin.Y));
|
||
if (YAxisEnd <= 0) g.DrawLine(ForeColor, new Point(DrawOrigin.X, Option.Grid.Top), new Point(DrawOrigin.X + DrawSize.Width, Option.Grid.Top));
|
||
|
||
g.DrawLine(ForeColor, DrawOrigin, new Point(DrawOrigin.X, DrawOrigin.Y - DrawSize.Height));
|
||
g.DrawLine(ForeColor, DrawOrigin, new Point(Width - Option.Grid.Right, DrawOrigin.Y));
|
||
|
||
if (Option.XAxis.AxisTick.Show)
|
||
{
|
||
float start = DrawOrigin.X + DrawBarWidth / 2.0f;
|
||
for (int i = 0; i < Option.XAxis.Data.Count; i++)
|
||
{
|
||
g.DrawLine(ForeColor, start, DrawOrigin.Y, start, DrawOrigin.Y + Option.XAxis.AxisTick.Length);
|
||
start += DrawBarWidth;
|
||
}
|
||
}
|
||
|
||
if (Option.XAxis.AxisLabel.Show)
|
||
{
|
||
float start = DrawOrigin.X + DrawBarWidth / 2.0f;
|
||
foreach (var data in Option.XAxis.Data)
|
||
{
|
||
SizeF sf = g.MeasureString(data, TempFont);
|
||
int angle = (Option.XAxis.AxisLabel.Angle + 36000) % 360;
|
||
if (angle > 0 && angle <= 90)
|
||
g.DrawString(data, TempFont, ForeColor, new PointF(start, DrawOrigin.Y + Option.XAxis.AxisTick.Length),
|
||
new StringFormat() { Alignment = StringAlignment.Far }, (3600 - Option.XAxis.AxisLabel.Angle) % 360);
|
||
else
|
||
g.DrawString(data, TempFont, ForeColor, start - sf.Width / 2.0f, DrawOrigin.Y + Option.XAxis.AxisTick.Length); start += DrawBarWidth;
|
||
}
|
||
|
||
SizeF sfname = g.MeasureString(Option.XAxis.Name, TempFont);
|
||
g.DrawString(Option.XAxis.Name, TempFont, ForeColor, DrawOrigin.X + (DrawSize.Width - sfname.Width) / 2.0f, DrawOrigin.Y + Option.XAxis.AxisTick.Length + sfname.Height);
|
||
}
|
||
|
||
double[] YLabels = YScale.CalcLabels();
|
||
float[] labels = YScale.CalcYPixels(YLabels, DrawOrigin.Y, DrawSize.Height);
|
||
for (int i = 0; i < labels.Length; i++)
|
||
{
|
||
if (labels[i] > DrawOrigin.Y) continue;
|
||
if (labels[i] < Option.Grid.Top) continue;
|
||
if (Option.YAxis.AxisTick.Show)
|
||
{
|
||
g.DrawLine(ForeColor, DrawOrigin.X, labels[i], DrawOrigin.X - Option.YAxis.AxisTick.Length, labels[i]);
|
||
if (!YLabels[i].EqualsDouble(0))
|
||
{
|
||
using (Pen pn = new Pen(ForeColor))
|
||
{
|
||
pn.DashStyle = DashStyle.Dash;
|
||
pn.DashPattern = new float[] { 3, 3 };
|
||
g.DrawLine(pn, DrawOrigin.X, labels[i], Width - Option.Grid.Right, labels[i]);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
g.DrawLine(ForeColor, DrawOrigin.X, labels[i], Width - Option.Grid.Right, labels[i]);
|
||
}
|
||
}
|
||
|
||
if (Option.YAxis.AxisLabel.Show)
|
||
{
|
||
string label = YLabels[i].ToString(Option.YAxis.AxisLabel.DecimalPlaces >= 0 ? "F" + Option.YAxis.AxisLabel.DecimalPlaces : YScale.Format);
|
||
SizeF sf = g.MeasureString(label, TempFont);
|
||
g.DrawString(label, TempFont, ForeColor, DrawOrigin.X - Option.YAxis.AxisTick.Length - sf.Width, labels[i] - sf.Height / 2.0f);
|
||
}
|
||
}
|
||
}
|
||
|
||
private void DrawAxisScales(Graphics g)
|
||
{
|
||
foreach (var line in Option.YAxisScaleLines)
|
||
{
|
||
double ymin = YAxisStart * YAxisInterval;
|
||
double ymax = YAxisEnd * YAxisInterval;
|
||
float pos = YScale.CalcYPixel(line.Value, DrawOrigin.Y, DrawSize.Height);
|
||
if (pos <= Option.Grid.Top || pos >= Height - Option.Grid.Bottom) continue;
|
||
using (Pen pn = new Pen(line.Color, line.Size))
|
||
{
|
||
g.DrawLine(pn, DrawOrigin.X, pos, Width - Option.Grid.Right, pos);
|
||
}
|
||
|
||
SizeF sf = g.MeasureString(line.Name, TempFont);
|
||
if (line.Left == UILeftAlignment.Left)
|
||
g.DrawString(line.Name, TempFont, line.Color, DrawOrigin.X + 4, pos - 2 - sf.Height);
|
||
if (line.Left == UILeftAlignment.Center)
|
||
g.DrawString(line.Name, TempFont, line.Color, DrawOrigin.X + (Width - Option.Grid.Left - Option.Grid.Right - sf.Width) / 2, pos - 2 - sf.Height);
|
||
if (line.Left == UILeftAlignment.Right)
|
||
g.DrawString(line.Name, TempFont, line.Color, Width - sf.Width - 4 - Option.Grid.Right, pos - 2 - sf.Height);
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 绘制序列
|
||
/// </summary>
|
||
/// <param name="g">绘制图面</param>
|
||
/// <param name="series">序列</param>
|
||
protected virtual void DrawSeries(Graphics g, List<UIBarSeries> series)
|
||
{
|
||
if (series == null || series.Count == 0) return;
|
||
|
||
for (int i = 0; i < Bars.Count; i++)
|
||
{
|
||
var bars = Bars[i];
|
||
foreach (var info in bars)
|
||
{
|
||
g.FillRectangle(info.Color, info.Rect);
|
||
|
||
if (Option.ShowValue)
|
||
{
|
||
string value = info.Value.ToString("F" + info.Series.DecimalPlaces);
|
||
SizeF sf = g.MeasureString(value, TempFont);
|
||
if (info.Top)
|
||
{
|
||
float top = info.Rect.Top - sf.Height;
|
||
if (top > Option.Grid.Top)
|
||
{
|
||
g.DrawString(value, TempFont, info.Color, info.Rect.Center().X - sf.Width / 2, top);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (info.Rect.Bottom + sf.Height + Option.Grid.Bottom < Height)
|
||
{
|
||
g.DrawString(value, TempFont, info.Color, info.Rect.Center().X - sf.Width / 2, info.Rect.Bottom);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
for (int i = 0; i < Option.XAxis.Data.Count; i++)
|
||
{
|
||
Bars[0][i].Size = g.MeasureString(Bars[0][i].Tips, TempFont);
|
||
}
|
||
}
|
||
|
||
|
||
private class BarInfo
|
||
{
|
||
public RectangleF Rect { get; set; }
|
||
|
||
public string Tips { get; set; }
|
||
|
||
public SizeF Size { get; set; }
|
||
|
||
public Color Color { get; set; }
|
||
|
||
public double Value { get; set; }
|
||
|
||
public bool Top { get; set; }
|
||
|
||
public UIBarSeries Series { get; set; }
|
||
}
|
||
}
|
||
} |