/// <summary>
/// Initializes a new instance of the <see cref="UCFunnelChart"/> class.
/// </summary>
public UCFunnelChart()
{
this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
this.SetStyle(ControlStyles.DoubleBuffer, true);
this.SetStyle(ControlStyles.ResizeRedraw, true);
this.SetStyle(ControlStyles.Selectable, true);
this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
this.SetStyle(ControlStyles.UserPaint, true);
this.FontChanged += UCFunnelChart_FontChanged;
Font = new Font("微软雅黑", 8);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
this.SizeChanged += UCFunnelChart_SizeChanged;
Size = new System.Drawing.Size(150, 150);
items = new FunelChartItem[0];
if (ControlHelper.IsDesignMode())
{
items = new FunelChartItem[5];
for (int i = 0; i < 5; i++)
{
items[i] = new FunelChartItem()
{
Text = "item" + i,
Value = 10 * (i + 1)
};
}
}
}
/// <summary>
/// 引发 <see cref="E:System.Windows.Forms.Control.Paint" /> 事件。
/// </summary>
/// <param name="e">包含事件数据的 <see cref="T:System.Windows.Forms.PaintEventArgs" />。</param>
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
var g = e.Graphics;
g.SetGDIHigh();
if (!string.IsNullOrEmpty(title))
{
g.DrawString(title, titleFont, new SolidBrush(titleForeColor), new RectangleF(0, 0, this.Width, m_titleSize.Height), new StringFormat()
{
Alignment = StringAlignment.Center, LineAlignment = StringAlignment.Center
});
}
if (items == null || items.Length <= 0)
{
g.DrawString("没有数据", Font, new SolidBrush(Color.Black), this.m_rectWorking, new StringFormat()
{
Alignment = StringAlignment.Center, LineAlignment = StringAlignment.Center
});
return;
}
List <FunelChartItem> lstItems;
if (direction == FunelChartDirection.UP)
{
lstItems = items.OrderBy(p => p.Value).ToList();
}
else
{
lstItems = items.OrderByDescending(p => p.Value).ToList();
}
List <RectangleF> lstRects = new List <RectangleF>();
List <GraphicsPath> lstPaths = new List <GraphicsPath>();
float maxValue = lstItems.Max(p => p.Value);
float dblSplitHeight = m_rectWorking.Height / lstItems.Count;
for (int i = 0; i < lstItems.Count; i++)
{
FunelChartItem item = lstItems[i];
if (item.ValueColor == null || item.ValueColor == Color.Empty || item.ValueColor == Color.Transparent)
{
item.ValueColor = ControlHelper.Colors[i];
}
switch (alignment)
{
case FunelChartAlignment.Left:
lstRects.Add(new RectangleF(m_rectWorking.Left, m_rectWorking.Top + dblSplitHeight * i, item.Value / maxValue * m_rectWorking.Width, dblSplitHeight));
break;
case FunelChartAlignment.Center:
lstRects.Add(new RectangleF(m_rectWorking.Left + (m_rectWorking.Width - (item.Value / maxValue * m_rectWorking.Width)) / 2, m_rectWorking.Top + dblSplitHeight * i, item.Value / maxValue * m_rectWorking.Width, dblSplitHeight));
break;
case FunelChartAlignment.Right:
lstRects.Add(new RectangleF(m_rectWorking.Right - (item.Value / maxValue * m_rectWorking.Width), m_rectWorking.Top + dblSplitHeight * i, item.Value / maxValue * m_rectWorking.Width, dblSplitHeight));
break;
}
}
for (int i = 0; i < lstRects.Count; i++)
{
var rect = lstRects[i];
GraphicsPath path = new GraphicsPath();
List <PointF> lstPoints = new List <PointF>();
if (direction == FunelChartDirection.UP)
{
switch (alignment)
{
case FunelChartAlignment.Left:
lstPoints.Add(new PointF(rect.Left, rect.Top));
if (i != 0)
{
lstPoints.Add(new PointF(lstRects[i - 1].Right, rect.Top));
}
break;
case FunelChartAlignment.Center:
if (i == 0)
{
lstPoints.Add(new PointF(rect.Left + rect.Width / 2, rect.Top));
}
else
{
lstPoints.Add(new PointF(lstRects[i - 1].Left, rect.Top));
lstPoints.Add(new PointF(lstRects[i - 1].Right, rect.Top));
}
break;
case FunelChartAlignment.Right:
if (i == 0)
{
lstPoints.Add(new PointF(rect.Right, rect.Top));
}
else
{
lstPoints.Add(new PointF(rect.Right - lstRects[i - 1].Width, rect.Top));
lstPoints.Add(new PointF(rect.Right, rect.Top));
}
break;
}
lstPoints.Add(new PointF(rect.Right, rect.Bottom - intSplitWidth));
lstPoints.Add(new PointF(rect.Left, rect.Bottom - intSplitWidth));
}
else
{
lstPoints.Add(new PointF(rect.Left, rect.Top + intSplitWidth));
lstPoints.Add(new PointF(rect.Right, rect.Top + intSplitWidth));
switch (alignment)
{
case FunelChartAlignment.Left:
if (i == lstRects.Count - 1)
{
lstPoints.Add(new PointF(rect.Left, rect.Bottom));
}
else
{
lstPoints.Add(new PointF(lstRects[i + 1].Right, rect.Bottom));
lstPoints.Add(new PointF(rect.Left, rect.Bottom));
}
break;
case FunelChartAlignment.Center:
if (i == lstRects.Count - 1)
{
lstPoints.Add(new PointF(rect.Left + rect.Width / 2, rect.Bottom));
}
else
{
lstPoints.Add(new PointF(lstRects[i + 1].Right, rect.Bottom));
lstPoints.Add(new PointF(lstRects[i + 1].Left, rect.Bottom));
}
break;
case FunelChartAlignment.Right:
if (i == lstRects.Count - 1)
{
lstPoints.Add(new PointF(rect.Right, rect.Bottom));
}
else
{
lstPoints.Add(new PointF(rect.Right, rect.Bottom));
lstPoints.Add(new PointF(lstRects[i + 1].Left, rect.Bottom));
}
break;
}
}
path.AddLines(lstPoints.ToArray());
path.CloseAllFigures();
// g.DrawPath(new Pen(new SolidBrush(lstItems[i].ValueColor.Value)), path);
g.FillPath(new SolidBrush(lstItems[i].ValueColor.Value), path);
//写字
if (itemTextAlign == FunelChartAlignment.Center)
{
g.DrawString(lstItems[i].Text + (ShowValue ? lstItems[i].Value.ToString("\n" + valueFormat) : ""), Font, new SolidBrush((lstItems[i].TextForeColor == null || lstItems[i].TextForeColor == Color.Empty || lstItems[i].TextForeColor == Color.Transparent) ? Color.White : lstItems[i].TextForeColor.Value), rect, new StringFormat()
{
Alignment = StringAlignment.Center, LineAlignment = StringAlignment.Center
});
}
else if (itemTextAlign == FunelChartAlignment.Left)
{
g.DrawString(lstItems[i].Text + (ShowValue ? lstItems[i].Value.ToString("\n" + valueFormat) : ""), Font, new SolidBrush((lstItems[i].TextForeColor == null || lstItems[i].TextForeColor == Color.Empty || lstItems[i].TextForeColor == Color.Transparent) ? lstItems[i].ValueColor.Value : lstItems[i].TextForeColor.Value), new RectangleF(0, rect.Top, rect.Left, rect.Height), new StringFormat()
{
Alignment = StringAlignment.Far, LineAlignment = StringAlignment.Center
});
g.DrawLine(new Pen(new SolidBrush((lstItems[i].TextForeColor == null || lstItems[i].TextForeColor == Color.Empty || lstItems[i].TextForeColor == Color.Transparent) ? lstItems[i].ValueColor.Value : lstItems[i].TextForeColor.Value)), rect.Left, rect.Top + rect.Height / 2, rect.Left + rect.Width / 2, rect.Top + rect.Height / 2);
}
else
{
g.DrawString(lstItems[i].Text + (ShowValue ? lstItems[i].Value.ToString("\n" + valueFormat) : ""), Font, new SolidBrush((lstItems[i].TextForeColor == null || lstItems[i].TextForeColor == Color.Empty || lstItems[i].TextForeColor == Color.Transparent) ? lstItems[i].ValueColor.Value : lstItems[i].TextForeColor.Value), new RectangleF(rect.Right, rect.Top, this.Width - rect.Right, rect.Height), new StringFormat()
{
Alignment = StringAlignment.Near, LineAlignment = StringAlignment.Center
});
g.DrawLine(new Pen(new SolidBrush((lstItems[i].TextForeColor == null || lstItems[i].TextForeColor == Color.Empty || lstItems[i].TextForeColor == Color.Transparent) ? lstItems[i].ValueColor.Value : lstItems[i].TextForeColor.Value)), rect.Left + rect.Width / 2, rect.Top + rect.Height / 2, rect.Right, rect.Top + rect.Height / 2);
}
}
}