using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing.Imaging;
using System.Drawing;
using System.IO;
namespace TChart.ImageChart
{
///
/// 走势图
///
///
/// 作者: Kingthy
/// 日期: 2007-09-11
/// MSN: Kingthy@gmail.com
/// 转载请注明原作者,当你有更新修改时如果方便的希望能发一份给我.谢谢
///
public class MovementImage : IDisposable
{
///
///
///
public MovementImage()
{
InitParameter();
}
#region 属性定义
///
/// 初始化参数
///
private void InitParameter()
{
m_Title = null;
m_Width = 0;
m_Height = 200;
m_Xspace = 4;
m_XSpaceWidth = 30;
m_YSpaceWidth = 30;
m_XAxisMaxValue = 0;
m_TitleColor = Color.Black;
m_TitleFont = new Font(new FontFamily("Arial"), 9, FontStyle.Regular);
m_BackgroundColor = Color.White;
m_XAxisColor = Color.Black;
m_YAxisColor = Color.Black;
m_Painter = new RectanglePainter(this);
m_Picture = null;
}
private int m_Xspace;
///
/// 返回或设置X轴间隔
///
public int Xspace
{
get
{
return m_Xspace;
}
set
{
m_Xspace = value;
}
}
private string m_Title;
///
/// 标题
///
public string Title
{
get
{
return m_Title;
}
set
{
m_Title = value;
}
}
private int m_Width;
///
/// 返回图片的宽度
///
public int Width
{
get
{
return m_Width;
}
}
private int m_Height;
///
/// 返回或设置图片的高度
///
public int Height
{
get
{
return m_Height;
}
set
{
m_Height = value;
}
}
private int m_XSpaceWidth;
///
/// X轴的间距
///
public int XSpaceWidth
{
get
{
return m_XSpaceWidth;
}
set
{
m_XSpaceWidth = value;
}
}
private int m_YSpaceWidth;
///
/// Y轴的间距
///
public int YSpaceWidth
{
get
{
return m_YSpaceWidth;
}
set
{
m_YSpaceWidth = value;
}
}
private Color m_TitleColor;
///
/// 标题的颜色
///
public Color TitleColor
{
get
{
return m_TitleColor;
}
set
{
m_TitleColor = value;
}
}
private Font m_TitleFont;
///
/// 标题的字体
///
public Font TitleFont
{
get
{
return m_TitleFont;
}
set
{
m_TitleFont = value;
}
}
private Color m_BackgroundColor;
///
/// 背景颜色
///
public Color BackgroundColor
{
get
{
return m_BackgroundColor;
}
set
{
m_BackgroundColor = value;
}
}
private Color m_XAxisColor;
///
/// X轴的颜色
///
public Color XAxisColor
{
get
{
return m_XAxisColor;
}
set
{
m_XAxisColor = value;
}
}
private Color m_YAxisColor;
///
/// Y轴的颜色
///
public Color YAxisColor
{
get
{
return m_YAxisColor;
}
set
{
m_YAxisColor = value;
}
}
private decimal m_XAxisMaxValue;
///
/// 返回X轴数据的最大值(供给Painter调用)
///
public decimal XAxisMaxValue
{
get
{
return m_XAxisMaxValue;
}
}
private System.Drawing.Image m_Picture;
///
/// 返回图片数据
///
public System.Drawing.Image Picture
{
get
{
return m_Picture;
}
set
{
m_Picture = value;
}
}
///
/// 画布
///
private Graphics m_Graphics;
#endregion
#region 设置作图器
private MovementPainterBase m_Painter;
///
/// 作图器
///
public MovementPainterBase Painter
{
get
{
return m_Painter;
}
set
{
m_Painter = value;
//重置作图器的关联图像为当前图
if (value != null) m_Painter.Image = this;
}
}
#endregion
#region 释放内容资源
///
/// 释放内容资源
///
public void Dispose()
{
if (m_Picture == null) m_Picture.Dispose();
m_Picture = null;
if (m_Graphics != null) m_Graphics.Dispose();
m_Graphics = null;
}
#endregion
#region 取得最大值
///
/// 获取X轴中的最大值
///
///
///
private decimal GetMaxXAxisValue(XAxisItemList xAxes)
{
if (xAxes.Count == 0) return 0;
decimal max = xAxes[0].Value;
for (int i = 1; i < xAxes.Count; i++)
{
max = Math.Max(max, xAxes[i].Value);
}
return max;
}
///
/// 获取所有X轴列中的最大值
///
///
///
private decimal GetMaxXAxisValue(List list)
{
decimal max = 0;
foreach (XAxisItemList item in list)
{
if (item.Count != 0) max = Math.Max(max, GetMaxXAxisValue(item));
}
return max;
}
#endregion
#region 画图
///
/// 初始化图片
///
/// X轴的数据
///
private bool InitImage(XAxisItemList xAxes)
{
if (xAxes == null) return false;
if (xAxes.Count == 0) return false;
//求长(左右距 + X轴数量级 * 间距)
this.m_Width = this.XSpaceWidth * 3 + this.XSpaceWidth * xAxes.Count;
//初始化图片
m_Picture = new Bitmap(this.Width, this.Height);
m_Graphics = Graphics.FromImage(m_Picture);
//填充背景色
m_Graphics.FillRectangle(new SolidBrush(this.BackgroundColor), 0, 0, this.Width, this.Height);
//画标题
Painter.DrawTitle(m_Graphics);
//画X,Y轴坐标
Painter.DrawXYAxisLine(m_Graphics, xAxes);
return true;
}
///
/// 画一条走势图
///
///
public void Draw(XAxisItemList xAxes)
{
//取得最大值
m_XAxisMaxValue = GetMaxXAxisValue(xAxes);
if (!InitImage(xAxes)) return;
//画值
Painter.DrawValue(m_Graphics, xAxes);
}
///
/// 画多条走势图
///
///
public void Draw(List list)
{
if (list == null || list.Count == 0) return;
//取得最大值
m_XAxisMaxValue = GetMaxXAxisValue(list);
XAxisItemList xAxes = list[0];
if (!InitImage(xAxes)) return;
//画值
foreach (XAxisItemList item in list)
{
Painter.DrawValue(m_Graphics, item);
}
}
#endregion
}
}