/// <summary>
/// 画图
/// </summary>
/// <param name="e"></param>
protected override void OnPaint(PaintEventArgs e)
{
if (this.DesignMode)
{
///Y坐标轴
_mainPanel.YAxisList.Clear();
_mainPanel.YAxisList.Add(new MedAxis(this.Font, Brushes.Black, 100, 0, 20));
_mainPanel.YAxisList.MinSetp = 1;
_mainPanel.YAxisList.Pen.Color = Color.Black;
///X坐标轴
_mainPanel.XAxisList.Clear();
MedAxis axis = new MedAxis(this.Font, Brushes.Black, 10, 1, 1f);
_mainPanel.XAxisList.Add(axis);
_mainPanel.XAxisList.MinSetp = 1;
_mainPanel.XAxisList.Pen.Color = Color.Black;
///其他属性
_mainPanel.LeftMargin = 10;
_mainPanel.BottomMargin = 20;
_mainPanel.RectBorderPen = Pens.Gray;
_mainPanel.HasAxisGridLine = false;
_mainPanel.XAxisTitleAtTop = false;
_mainPanel.CurveList.Clear();
MedPointList points = new MedPointList();
points.Add(1, 10);
points.Add(2, 40);
points.Add(3, 20);
points.Add(4, 80);
points.Add(5, 50);
points.Add(6, 70);
points.Add(7, 60);
points.Add(8, 100);
points.Add(9, 90);
points.Add(10, 0);
MedCurve curve = new MedCurve(points);
_mainPanel.CurveList.Add(curve);
}
///隐藏滚动条
///如果没有坐标轴则不作图
if ((_mainPanel.XAxisList.Count == 0) || (_mainPanel.YAxisList.Count == 0))
{
return;
}
_mainPanel.DrawGraph(e.Graphics);
///绘制光标位置
if (_drawcursorpos)
{
DrawCursorPos(e.Graphics);
}
}
public void Add(MedAxis axis)
{
List.Add(axis);
}
/// <summary>
/// 绘制刻度值标题
/// </summary>
/// <param name="g">作图对象</param>
/// <param name="rect">区域</param>
/// <param name="pen">画笔</param>
/// <param name="gridPen">网格画笔</param>
/// <param name="index">坐标轴索引</param>
/// <param name="minstep">最小刻度</param>
/// <param name="axis">坐标轴</param>
public void DrawYAxisTitle(Graphics g, Rectangle rect, Pen pen, Pen gridPen, int index, int minstep, MedAxis axis, int leftOffSet, int topOffSet)
{
///刻度数量
int _count = (int)((axis.Max - axis.Min) / (axis.Step));
for (int i = 0; i <= _count; i++)
{
float _Y = rect.Y + i * rect.Height / _count;
/////绘制刻度值标题
float _V = (axis.Max - axis.Step * i);
SizeF _sizeF = g.MeasureString(_V.ToString(), axis.Font);
SizeF _sizeF1 = g.MeasureString("1000", axis.Font);
///有网格
if (_gridHeightPercent > 0)
{
if (i < _count)
{
g.DrawString(_V.ToString(), axis.Font, axis.Brush, rect.X + leftOffSet - _sizeF.Width - index * _sizeF1.Width - 15 + _yAxisTitleOffset, _Y + topOffSet - _sizeF.Height / 2);
}
}
///无网格
else
{
if ((i > 0) && (i < _count))
{
g.DrawString(_V.ToString(), axis.Font, axis.Brush, rect.X + leftOffSet - _sizeF.Width - index * _sizeF1.Width - 15, _Y + topOffSet - _sizeF.Height / 2 - i - 1);
}
else if (i > 0)
{
g.DrawString(_V.ToString(), axis.Font, axis.Brush, rect.X + leftOffSet - _sizeF.Width - index * _sizeF1.Width - 15, _Y + topOffSet - _sizeF.Height - 2);
}
else
{
g.DrawString(_V.ToString(), axis.Font, axis.Brush, rect.X + leftOffSet - _sizeF.Width - index * _sizeF1.Width - 15, _Y + topOffSet - 2);
}
}
}
}
/// <summary>
/// 绘制Y坐标轴
/// </summary>
/// <param name="g">作图对象</param>
/// <param name="rect">区域</param>
/// <param name="pen">画笔</param>
/// <param name="gridPen">网格画笔</param>
/// <param name="index">坐标轴索引</param>
/// <param name="minstep">最小刻度</param>
/// <param name="axis">坐标轴</param>
public void DrawYAxis(Graphics g, Rectangle rect, Pen pen, Pen gridPen, int index, int minstep, MedAxis axis, int leftOffSet, int topOffSet)
{
///刻度数量
int _count = (int)((axis.Max - axis.Min) / (axis.Step));
for (int i = 0; i <= _count; i++)
{
float _Y = rect.Y + i * rect.Height / _count;
///只绘制一次
if (index == 0)
{
if (_gridHeightPercent > 0)
{
g.DrawLine(pen, rect.X + leftOffSet, _Y + topOffSet, rect.X + rect.Width + leftOffSet, _Y + topOffSet);
///绘制网格
if ((i < _count) && (_hasAxisGridLine))
{
DrawAxisGrid(g, new Rectangle(rect.X + leftOffSet, (int)_Y + topOffSet, rect.Width, (int)(rect.Height / _count)), minstep, false, gridPen);
}
}
else
{
if ((_hasAxisGridLine) || (i == _count))
{
g.DrawLine(pen, rect.X + leftOffSet, _Y + topOffSet - i - 1, rect.X + rect.Width + leftOffSet, _Y + topOffSet - i - 1);
}
else
{
g.DrawLine(pen, rect.X + leftOffSet, _Y + topOffSet - i - 1, rect.X + 5 + leftOffSet, _Y + topOffSet - i - 1);
}
///绘制网格
if ((i < _count) && (_hasAxisGridLine))
{
DrawAxisGrid(g, new Rectangle(rect.X + leftOffSet, (int)_Y + topOffSet - i - 1, rect.Width, (int)(rect.Height / _count) - 1), minstep, false, gridPen);
}
}
}
}
}
/// <summary>
/// 画X坐标轴
/// </summary>
/// <param name="g">作图对象</param>
/// <param name="rect">作图区域</param>
/// <param name="pen">画笔</param>
/// <param name="gridPen">网格画笔</param>
/// <param name="index">坐标轴索引</param>
/// <param name="minstep">最小分割</param>
/// <param name="axis">坐标轴</param>
public void DrawXAxis(Graphics g, Rectangle rect, Pen pen, Pen gridPen, int index, int minstep, MedAxis axis, int leftOffSet, int topOffSet)
{
int _count = (int)((axis.Max - axis.Min) / (axis.Step));
if (_count == 0)
{
return;
}
for (int i = 0; i <= _count; i++)
{
float _X = rect.X + i * rect.Width / _count;
if (index == 0)
{
if ((_hasAxisGridLine) || (i == 0))
{
g.DrawLine(pen, _X + leftOffSet, rect.Y + topOffSet, _X + leftOffSet, rect.Y + topOffSet + rect.Height);
}
else
{
g.DrawLine(pen, _X + leftOffSet, rect.Y + topOffSet + rect.Height - 10, _X + leftOffSet, rect.Y + topOffSet + rect.Height);
}
if ((i < _count) && _hasAxisGridLine)
{
DrawAxisGrid(g, new Rectangle((int)_X + leftOffSet, rect.Y + topOffSet, (int)(rect.Width / _count), rect.Height), minstep, true, gridPen);
}
}
}
}
