/// <summary>
/// 初始化样式布局（默认为直角坐标，无图例）
/// </summary>
/// <param name="g"></param>
/// <param name="xa"></param>
/// <param name="ya"></param>
/// <param name="y2a"></param>
/// <param name="gd"></param>
/// <param name="lb"></param>
/// <param name="tl"></param>
internal void AddChartStyle(Graphics g, Title tl, XYLabel lb, Grid gd, XAxis xa, YAxis ya, Y2Axis y2a)
{
//设置绘图区位置、大小
SetPlotArea(g, tl, lb, gd, xa, ya, y2a);
//ChartArea和PlotArea底色绘制（通用）
FillColorInChartAreas(g);
//直角坐标通用网格线
AddGirdSquare(g, gd, xa, ya);
//绘制x，y,y2 轴刻度线和标记
float fX, fY;
SolidBrush aBrush = new SolidBrush(xa.XTickStyle.TextColor);
for (fX = xa.XLimMin; fX <= xa.XLimMax; fX += xa.XTick)
{
fX = DataDeal.FloatAccur(fX);
PointF yAxisPoint = Point2D(new PointF(fX, ya.YLimMin), xa, ya);
g.DrawLine(Pens.Black, yAxisPoint, new PointF(yAxisPoint.X, yAxisPoint.Y - 5f));
StringFormat sFormat = new StringFormat();
sFormat.Alignment = StringAlignment.Far;
SizeF sizeXTick = g.MeasureString(fX.ToString(), xa.XTickStyle.TextFont);
g.DrawString(fX.ToString(), xa.XTickStyle.TextFont, aBrush, new PointF(yAxisPoint.X + sizeXTick.Width / 2, yAxisPoint.Y + 4f), sFormat);
}
aBrush = new SolidBrush(ya.YTickStyle.TextColor);
SizeF tickFontSize = g.MeasureString("A", ya.YTickStyle.TextFont);
for (fY = ya.YLimMin; fY <= ya.YLimMax; fY += ya.YTick)
{
fY = DataDeal.FloatAccur(fY);
PointF xAxisPoint = Point2D(new PointF(xa.XLimMin, fY), xa, ya);
g.DrawLine(Pens.Black, xAxisPoint, new PointF(xAxisPoint.X + 5f, xAxisPoint.Y));
StringFormat sFormat = new StringFormat();
sFormat.Alignment = StringAlignment.Far;
g.DrawString(fY.ToString(), ya.YTickStyle.TextFont, aBrush, new PointF(xAxisPoint.X - 3f, xAxisPoint.Y - tickFontSize.Height / 2), sFormat);
}
if (y2a.IsY2Axis)
{
aBrush = new SolidBrush(y2a.Y2TickStyle.TextColor);
tickFontSize = g.MeasureString("A", y2a.Y2TickStyle.TextFont);
for (fY = y2a.Y2LimMin; fY <= y2a.Y2LimMax; fY += y2a.Y2Tick)
{
fY = DataDeal.FloatAccur(fY);
PointF x2AxisPoint = Point2DY2(new PointF(xa.XLimMax, fY), xa, y2a);
g.DrawLine(Pens.Black, x2AxisPoint, new PointF(x2AxisPoint.X - 5f, x2AxisPoint.Y));
StringFormat sFormat = new StringFormat();
sFormat.Alignment = StringAlignment.Near;
g.DrawString(fY.ToString(), y2a.Y2TickStyle.TextFont, aBrush, new PointF(x2AxisPoint.X + 3f, x2AxisPoint.Y - tickFontSize.Height / 2), sFormat);
}
}
aBrush.Dispose();
AddTitle(g, tl);
AddLabels(g, tl, lb, y2a);
}
/// <summary>
/// 绘制标签（无图例影响的默认位置）
/// </summary>
/// <param name="g"></param>
/// <param name="tl"></param>
/// <param name="lb"></param>
/// <param name="y2a"></param>
private void AddLabels(Graphics g, Title tl, XYLabel lb, Y2Axis y2a)
{
StringFormat sFormat = new StringFormat();
sFormat.Alignment = StringAlignment.Center;
SizeF titleFontSize = g.MeasureString("A", tl.TitleStyle.TextFont);
SolidBrush aBrush = new SolidBrush(lb.XYLabelStyle.TextColor);
//添加x轴标签
SizeF labelFontSize = g.MeasureString("A", lb.XYLabelStyle.TextFont);
if (lb.IsXLabelVisible)
{
if (string.IsNullOrWhiteSpace(lb.XLabel))
{
lb.XLabel = "X Axis";
}
g.DrawString(lb.XLabel, lb.XYLabelStyle.TextFont, aBrush,
new Point(PlotArea.Left + PlotArea.Width / 2, ChartArea.Bottom - (int)YOffset - (int)labelFontSize.Height), sFormat);
}
//添加y轴标签
if (lb.IsYLabelVisible)
{
if (string.IsNullOrWhiteSpace(lb.YLabel))
{
lb.YLabel = "Y Axis";
}
// Save the state of the current Graphics object
GraphicsState gState = g.Save();
g.TranslateTransform(ChartArea.X + XOffset, ChartArea.Y + YOffset + titleFontSize.Height + YOffset / 2 + PlotArea.Height / 2);
g.RotateTransform(-90);
g.DrawString(lb.YLabel, lb.XYLabelStyle.TextFont, aBrush, new Point(0, 0), sFormat);
// Restore it:
g.Restore(gState);
}
//添加y2轴标签
if (y2a.IsY2Axis)
{
if (lb.IsY2LabelVisible)
{
if (string.IsNullOrWhiteSpace(lb.Y2Label))
{
lb.Y2Label = "Y2 Axis";
}
// Save the state of the current Graphics object
GraphicsState gState2 = g.Save();
g.TranslateTransform(ChartArea.X + ChartArea.Width - XOffset - labelFontSize.Width, ChartArea.Y + YOffset + titleFontSize.Height + YOffset / 2 + PlotArea.Height / 2);
g.RotateTransform(-90);
g.DrawString(lb.Y2Label, lb.XYLabelStyle.TextFont, aBrush, new Point(0, 0), sFormat);
// Restore it:
g.Restore(gState2);
}
}
aBrush.Dispose();
}
/// <summary>
/// x轴标记角度自适应
/// </summary>
/// <param name="g"></param>
/// <param name="cs"></param>
/// <param name="lb"></param>
/// <param name="xa"></param>
internal static void SetTickAngle(Graphics g, ChartStyle cs, XYLabel lb, XAxis xa)
{
SizeF sizeXTick;
float maxlength = 0; float maxheight = 0;
for (int n = 0; n < xa.XTickMarkFull.Length; n++)
{
sizeXTick = g.MeasureString(xa.XTickMarkFull[n], xa.XTickStyle.TextFont);
maxlength = (sizeXTick.Width > maxlength) ? sizeXTick.Width : maxlength;
maxheight = (sizeXTick.Height > maxheight)? sizeXTick.Height:maxheight;
}
float xticklength = xa.XTick * cs.PlotArea.Width / (xa.XLimMax - xa.XLimMin);
xa.XTickAngle = (xa.XMarkInterval * xticklength > maxlength) ? 0 : ((xa.XMarkInterval * xticklength > maxlength / 2) ? -45 : -90);
}
/// <summary>
/// 直角坐标样式布局
/// </summary>
/// <param name="g"></param>
/// <param name="dcs"></param>
/// <param name="xa"></param>
/// <param name="ya"></param>
/// <param name="y2a"></param>
/// <param name="gd"></param>
/// <param name="lb"></param>
/// <param name="tl"></param>
/// <param name="lg"></param>
internal void AddChartStyleSquare(Graphics g, Title tl, XYLabel lb, Grid gd, XAxis xa, YAxis ya, Y2Axis y2a, Legend lg, List <DataCollection> dcs)
{
try
{
//设置直角坐标绘图区位置、大小（受元素之间的相互影响）
SetPlotArea(g, tl, lb, xa, ya, y2a, gd, lg, dcs);
//再次确定大小的原因：根据plot宽度->确定文本角度->重新确定plot高度
AxisFit.SetTickAngle(g, this, lb, xa);
SetPlotArea(g, tl, lb, xa, ya, y2a, gd, lg, dcs);
//ChartArea和PlotArea底色绘制（通用）
FillColorInChartAreas(g);
//绘制标题（通用）
AddTitle(g, tl);
//直角坐标通用网格线
AddGirdSquare(g, gd, xa, ya);
//绘制轴标签（受图例影响）
AddLabels(g, tl, lb, y2a, lg, dcs);
//绘制坐标轴刻度线和标记（受数据影响）
AddTicks(g, lb, xa, ya, y2a);
}
catch { }
}
/// <summary>
/// 绘制刻度线和标记（受数据影响）
/// </summary>
/// <param name="g"></param>
/// <param name="lb"></param>
/// <param name="xa"></param>
/// <param name="ya"></param>
/// <param name="y2a"></param>
private void AddTicks(Graphics g, XYLabel lb, XAxis xa, YAxis ya, Y2Axis y2a)
{
float fX, fY;
//绘制x轴刻度线和标记：
SolidBrush aBrush = new SolidBrush(xa.XTickStyle.TextColor);
SizeF sizeXTick;
//出现在SetPlotArea和AddTicks中轴循环
//for(float xTick = xa.XLimMin; xTick <= xa.XLimMax; xTick += xa.XTick)
//弃用原因1：防止Tick为0时出现死循环
//弃用原因2：float的精度损失程度累加
int count = (int)Math.Round((xa.XLimMax - xa.XLimMin) / xa.XTick) + 1;
for (int i = 0; i < count; i++)
{
fX = xa.XLimMin + i * xa.XTick;
fX = DataDeal.FloatAccur(fX);
PointF yAxisPoint = Point2D(new PointF(fX, ya.YLimMin), xa, ya);
g.DrawLine(Pens.Black, yAxisPoint, new PointF(yAxisPoint.X, yAxisPoint.Y - 5f));
StringFormat sFormat = new StringFormat();
sFormat.Alignment = StringAlignment.Far;
sizeXTick = g.MeasureString(xa.XTickMarkFull[i], xa.XTickStyle.TextFont);
if (xa.XTickAngle != 0)
{
g.TranslateTransform(yAxisPoint.X, yAxisPoint.Y); //设置旋转中心为文字中心
g.RotateTransform(xa.XTickAngle); //旋转
//g.TranslateTransform(-yAxisPoint.X, -yAxisPoint.Y);
g.DrawString(xa.XTickMarkFull[i], xa.XTickStyle.TextFont, aBrush, new PointF(0, 4f - sizeXTick.Height / 2), sFormat);
g.ResetTransform();
}
else
{
g.DrawString(xa.XTickMarkFull[i], xa.XTickStyle.TextFont, aBrush, new PointF(yAxisPoint.X + sizeXTick.Width / 2, yAxisPoint.Y + 4f), sFormat);
}
}
SizeF tickFontSize = g.MeasureString("A", ya.YTickStyle.TextFont);
//绘制y轴刻度线和标记：
int ycount = (int)Math.Round((ya.YLimMax - ya.YLimMin) / ya.YTick) + 1;
for (int i = 0; i < ycount; i++)
{
fY = ya.YLimMin + i * ya.YTick;
fY = DataDeal.FloatAccur(fY);
PointF xAxisPoint = Point2D(new PointF(xa.XLimMin, fY), xa, ya);
g.DrawLine(Pens.Black, xAxisPoint, new PointF(xAxisPoint.X + 5f, xAxisPoint.Y));
StringFormat sFormat = new StringFormat();
sFormat.Alignment = StringAlignment.Far;
g.DrawString(fY.ToString(), ya.YTickStyle.TextFont, aBrush, new PointF(xAxisPoint.X - 3f, xAxisPoint.Y - tickFontSize.Height / 2), sFormat);
}
//绘制y2轴刻度线和标记：
if (y2a.IsY2Axis)
{
int y2count = (int)Math.Round((y2a.Y2LimMax - y2a.Y2LimMin) / y2a.Y2Tick) + 1;
for (int i = 0; i < y2count; i++)
{
fY = y2a.Y2LimMin + i * y2a.Y2Tick;
fY = DataDeal.FloatAccur(fY);
PointF x2AxisPoint = Point2DY2(new PointF(xa.XLimMax, fY), xa, y2a);
g.DrawLine(Pens.Black, x2AxisPoint, new PointF(x2AxisPoint.X - 5f, x2AxisPoint.Y));
StringFormat sFormat = new StringFormat();
sFormat.Alignment = StringAlignment.Near;
g.DrawString(fY.ToString(), y2a.Y2TickStyle.TextFont, aBrush, new PointF(x2AxisPoint.X + 3f, x2AxisPoint.Y - tickFontSize.Height / 2), sFormat);
}
}
aBrush.Dispose();
}
/// <summary>
/// 绘制轴标签（受图例影响）
/// </summary>
/// <param name="g"></param>
/// <param name="tl"></param>
/// <param name="lb"></param>
/// <param name="y2a"></param>
/// <param name="lg"></param>
/// <param name="dcs"></param>
private void AddLabels(Graphics g, Title tl, XYLabel lb, Y2Axis y2a, Legend lg, List <DataCollection> dcs)
{
StringFormat sFormat = new StringFormat();
sFormat.Alignment = StringAlignment.Center;
SolidBrush aBrush = new SolidBrush(lb.XYLabelStyle.TextColor);
SizeF labelFontSize = g.MeasureString("A", lb.XYLabelStyle.TextFont);
float stringX; float stringY;
SizeF titleFontSize = g.MeasureString("A", tl.TitleStyle.TextFont);
//图例对标题的影响
float legendWidth = 0; float legendHeight = 0;
if (lg.IsLegendVisible && !lg.IsInside)
{
lg.GetLegendSize(g, dcs, this, out legendWidth, out legendHeight);
}
//添加x轴标签
if (lb.IsXLabelVisible)
{
if (string.IsNullOrWhiteSpace(lb.XLabel))
{
lb.XLabel = "X Axis";
}
stringX = PlotArea.Left + PlotArea.Width / 2;
stringY = ChartArea.Bottom - (int)YOffset - (int)labelFontSize.Height;
if (lg.LegendPosition == Legend.LegendPositionEnum.South)
{
stringY -= legendHeight;
}
g.DrawString(lb.XLabel, lb.XYLabelStyle.TextFont, aBrush, stringX, stringY, sFormat);
}
//添加y轴标签
if (string.IsNullOrWhiteSpace(lb.YLabel))
{
lb.YLabel = "Y Axis";
}
stringX = ChartArea.X + XOffset;
stringY = ChartArea.Y + YOffset + titleFontSize.Height + YOffset / 3 + PlotArea.Height / 2;
if (lg.LegendPosition == Legend.LegendPositionEnum.West || lg.LegendPosition == Legend.LegendPositionEnum.SouthWest || lg.LegendPosition == Legend.LegendPositionEnum.NorthWest)
{
stringX += legendWidth;
}
if (lg.LegendPosition == Legend.LegendPositionEnum.North)
{
stringY += legendHeight;
}
// Save the state of the current Graphics object
GraphicsState gState = g.Save();
g.TranslateTransform(stringX, stringY);
g.RotateTransform(-90);
g.DrawString(lb.YLabel, lb.XYLabelStyle.TextFont, aBrush, 0, 0, sFormat);
// Restore it:
g.Restore(gState);
//添加y2轴标签
if (y2a.IsY2Axis)
{
if (string.IsNullOrWhiteSpace(lb.Y2Label))
{
lb.Y2Label = "Y2 Axis";
}
stringX = ChartArea.X + ChartArea.Width - XOffset - labelFontSize.Height;
stringY = ChartArea.Y + YOffset + titleFontSize.Height + YOffset / 3 + PlotArea.Height / 2;
if (lg.LegendPosition == Legend.LegendPositionEnum.East || lg.LegendPosition == Legend.LegendPositionEnum.SouthEast || lg.LegendPosition == Legend.LegendPositionEnum.NorthEast)
{
stringX -= legendWidth;
}
if (lg.LegendPosition == Legend.LegendPositionEnum.North)
{
stringY += legendHeight;
}
// Save the state of the current Graphics object
GraphicsState gState2 = g.Save();
g.TranslateTransform(stringX, stringY);
g.RotateTransform(-90);
g.DrawString(lb.Y2Label, lb.XYLabelStyle.TextFont, aBrush, 0, 0, sFormat);
// Restore it:
g.Restore(gState2);
}
aBrush.Dispose();
}
/// <summary>
/// 设置直角坐标绘图区位置、大小（受元素之间的相互影响）
/// </summary>
/// <param name="g"></param>
/// <param name="tl"></param>
/// <param name="lb"></param>
/// <param name="xa"></param>
/// <param name="ya"></param>
/// <param name="y2a"></param>
/// <param name="gd"></param>
/// <param name="lg"></param>
/// <param name="dcs"></param>
private void SetPlotArea(Graphics g, Title tl, XYLabel lb, XAxis xa, YAxis ya, Y2Axis y2a, Grid gd, Legend lg, List <DataCollection> dcs)
{
SizeF titleFontSize = g.MeasureString("A", tl.TitleStyle.TextFont);
if (string.IsNullOrWhiteSpace(tl.TitleName) || tl.TitleName.ToUpper() == "NO TITLE")
{
titleFontSize.Width = 8f;
titleFontSize.Height = 8f;
}
float xSpacing = XOffset / 2.0f;
float ySpacing = YOffset / 2.0f;
SizeF labelFontSize = g.MeasureString("A", lb.XYLabelStyle.TextFont);
SizeF tickFontSize = g.MeasureString("A", xa.XTickStyle.TextFont);
float tickSpacing = 2f;
//图例所在位置影响plotarea的大小和位置
#region 受图例影响时
if (!lg.IsLegendVisible || lg.IsInside)
{
//X轴标记的自适应和全显示，影响底部间距
//float bottomMargin = YOffset + xlabelFontSize.Height + ySpacing + tickFontSize.Height + tickSpacing;
float bottomMargin = YOffset + tickSpacing + ySpacing;
if (lb.IsXLabelVisible)
{
bottomMargin += labelFontSize.Height;
}
SizeF xTickSize = g.MeasureString(xa.XLimMin.ToString(), xa.XTickStyle.TextFont);
int xcount = (int)Math.Round((xa.XLimMax - xa.XLimMin) / xa.XTick) + 1;
for (int i = 0; i < xcount; i++)
{
SizeF tempSize = g.MeasureString(xa.XTickMarkFull[i], xa.XTickStyle.TextFont);
if (xTickSize.Width < tempSize.Width)
{
xTickSize = tempSize;
}
}
if (xa.XTickAngle == 0)
{
bottomMargin += xTickSize.Height;
}
else if (xa.XTickAngle == -90)
{
bottomMargin += xTickSize.Width;
}
else
{
bottomMargin += xTickSize.Width * 0.72f;
}
//获取y轴标记宽度
SizeF yTickSize = g.MeasureString(ya.YLimMin.ToString(), ya.YTickStyle.TextFont);
int ycount = (int)Math.Round((ya.YLimMax - ya.YLimMin) / ya.YTick) + 1;
for (int i = 0; i < ycount; i++)
{
float yTick = ya.YLimMin + i * ya.YTick;
SizeF tempSize = g.MeasureString(yTick.ToString(), ya.YTickStyle.TextFont);
if (yTickSize.Width < tempSize.Width)
{
yTickSize = tempSize;
}
}
float leftMargin = XOffset + labelFontSize.Height + xSpacing + yTickSize.Width + tickSpacing;
float rightMargin = 2 * XOffset;
float topMargin = YOffset + titleFontSize.Height + ySpacing;
//单y轴绘图区
int plotX = ChartArea.X + (int)leftMargin;
int plotY = ChartArea.Y + (int)topMargin;
int plotHeight = ChartArea.Height - (int)topMargin - (int)bottomMargin;
int plotWidth = ChartArea.Width - (int)leftMargin - (int)rightMargin;
//双y轴：重新定义绘图区宽度
if (y2a.IsY2Axis)
{
//y2轴标记宽度
SizeF y2TickSize = g.MeasureString(y2a.Y2LimMin.ToString(), y2a.Y2TickStyle.TextFont);
int y2count = (int)Math.Round((y2a.Y2LimMax - y2a.Y2LimMin) / y2a.Y2Tick) + 1;
for (int i = 0; i < y2count; i++)
{
float y2Tick = y2a.Y2LimMin + i * y2a.Y2Tick;
SizeF tempSize2 = g.MeasureString(y2Tick.ToString(), y2a.Y2TickStyle.TextFont);
if (y2TickSize.Width < tempSize2.Width)
{
y2TickSize = tempSize2;
}
}
rightMargin = XOffset + labelFontSize.Height + xSpacing + y2TickSize.Width + tickSpacing;
plotWidth = ChartArea.Width - (int)leftMargin - (int)rightMargin;
}
plotArea = new Rectangle(plotX, plotY, plotWidth, plotHeight);
}
#endregion
#region 外部图例
else
{
//X轴标记的自适应和全显示，影响底部间距bottom
float bottomMargin = YOffset + tickSpacing + ySpacing;
if (lb.IsXLabelVisible)
{
bottomMargin += labelFontSize.Height;
}
SizeF xTickSize = g.MeasureString(xa.XLimMin.ToString(), xa.XTickStyle.TextFont);
int count = (int)Math.Round((xa.XLimMax - xa.XLimMin) / xa.XTick) + 1;
for (int i = 0; i < count; i++)
{
SizeF tempSize = g.MeasureString(xa.XTickMarkFull[i], xa.XTickStyle.TextFont);
if (xTickSize.Width < tempSize.Width)
{
xTickSize = tempSize;
}
}
if (xa.XTickAngle == 0)
{
bottomMargin += xTickSize.Height;
}
else if (xa.XTickAngle == -90)
{
bottomMargin += xTickSize.Width;
}
else
{
bottomMargin += xTickSize.Width * 0.72f;
}
//获取y轴标记宽度
SizeF yTickSize = g.MeasureString(ya.YLimMin.ToString(), ya.YTickStyle.TextFont);
int ycount = (int)Math.Round((ya.YLimMax - ya.YLimMin) / ya.YTick) + 1;
for (int i = 0; i < ycount; i++)
{
float yTick = ya.YLimMin + i * ya.YTick;
SizeF tempSize = g.MeasureString(yTick.ToString(), ya.YTickStyle.TextFont);
if (yTickSize.Width < tempSize.Width)
{
yTickSize = tempSize;
}
}
float leftMargin = XOffset + labelFontSize.Height + xSpacing + yTickSize.Width + tickSpacing;
float rightMargin = XOffset + xSpacing;
float topMargin = YOffset + titleFontSize.Height + ySpacing;
//根据图例位置确定边距
float legendWidth = 0; float legendHeight = 0;
lg.GetLegendSize(g, dcs, this, out legendWidth, out legendHeight);
if (lg.LegendPosition == Legend.LegendPositionEnum.East || lg.LegendPosition == Legend.LegendPositionEnum.SouthEast || lg.LegendPosition == Legend.LegendPositionEnum.NorthEast)
{
rightMargin += legendWidth;
}
if (lg.LegendPosition == Legend.LegendPositionEnum.West || lg.LegendPosition == Legend.LegendPositionEnum.SouthWest || lg.LegendPosition == Legend.LegendPositionEnum.NorthWest)
{
leftMargin += legendWidth;
}
if (lg.LegendPosition == Legend.LegendPositionEnum.North)
{
topMargin += legendHeight;
}
if (lg.LegendPosition == Legend.LegendPositionEnum.South)
{
bottomMargin += legendHeight;
}
//单y轴绘图区大小
int plotX = ChartArea.X + (int)leftMargin;
int plotY = ChartArea.Y + (int)topMargin;
int plotHeight = ChartArea.Height - (int)topMargin - (int)bottomMargin;
int plotWidth = ChartArea.Width - (int)leftMargin - (int)rightMargin;
//双y轴：重新定义绘图区宽度
if (y2a.IsY2Axis)
{
//y2轴标记宽度
SizeF y2TickSize = g.MeasureString(y2a.Y2LimMin.ToString(), y2a.Y2TickStyle.TextFont);
int y2count = (int)Math.Round((y2a.Y2LimMax - y2a.Y2LimMin) / y2a.Y2Tick) + 1;
for (int i = 0; i < y2count; i++)
{
float y2Tick = y2a.Y2LimMin + i * y2a.Y2Tick;
SizeF tempSize2 = g.MeasureString(y2Tick.ToString(), y2a.Y2TickStyle.TextFont);
if (y2TickSize.Width < tempSize2.Width)
{
y2TickSize = tempSize2;
}
}
rightMargin = XOffset + labelFontSize.Height + xSpacing + y2TickSize.Width + tickSpacing;
if (lg.LegendPosition == Legend.LegendPositionEnum.East || lg.LegendPosition == Legend.LegendPositionEnum.SouthEast || lg.LegendPosition == Legend.LegendPositionEnum.NorthEast)
{
rightMargin += legendWidth;
}
plotWidth = ChartArea.Width - (int)leftMargin - (int)rightMargin;
}
plotArea = new Rectangle(plotX, plotY, plotWidth, plotHeight);
}
#endregion
}
/// <summary>
/// 设置默认绘图区位置，大小（无图例影响的默认位置）
/// </summary>
/// <param name="g"></param>
/// <param name="xa"></param>
/// <param name="ya"></param>
/// <param name="y2a"></param>
/// <param name="gd"></param>
/// <param name="lb"></param>
/// <param name="tl"></param>
private void SetPlotArea(Graphics g, Title tl, XYLabel lb, Grid gd, XAxis xa, YAxis ya, Y2Axis y2a)
{
SizeF titleFontSize = g.MeasureString("A", tl.TitleStyle.TextFont);
if (string.IsNullOrWhiteSpace(tl.TitleName) || tl.TitleName.ToUpper() == "NO TITLE")
{
titleFontSize.Width = 8f;
titleFontSize.Height = 8f;
}
float xSpacing = XOffset / 2.0f;
float ySpacing = YOffset / 2.0f;
SizeF tickFontSize = g.MeasureString("A", xa.XTickStyle.TextFont);
float tickSpacing = 2f;
//获取y轴标记宽度
SizeF yTickSize = g.MeasureString(ya.YLimMin.ToString(), ya.YTickStyle.TextFont);
int ycount = (int)Math.Round((ya.YLimMax - ya.YLimMin) / ya.YTick) + 1;
for (int i = 0; i < ycount; i++)
{
float yTick = ya.YLimMin + i * ya.YTick;
yTick = DataDeal.FloatAccur(yTick);
SizeF tempSize = g.MeasureString(yTick.ToString(), ya.YTickStyle.TextFont);
if (yTickSize.Width < tempSize.Width)
{
yTickSize = tempSize;
}
}
SizeF labelFontSize = g.MeasureString("A", lb.XYLabelStyle.TextFont);
float leftMargin = XOffset + labelFontSize.Height + xSpacing + yTickSize.Width + tickSpacing;
float rightMargin = 2 * XOffset;
float topMargin = YOffset + titleFontSize.Height + ySpacing;
float bottomMargin = YOffset + labelFontSize.Height + ySpacing + tickFontSize.Height + tickSpacing;
//单y轴绘图区大小
int plotX = ChartArea.X + (int)leftMargin;
int plotY = ChartArea.Y + (int)topMargin;
int plotHeight = ChartArea.Height - (int)topMargin - (int)bottomMargin;
int plotWidth = ChartArea.Width - (int)leftMargin - (int)rightMargin;
//双y轴：重新定义绘图区宽度
if (y2a.IsY2Axis)
{
//y2轴标记宽度
SizeF y2TickSize = g.MeasureString(y2a.Y2LimMin.ToString(), y2a.Y2TickStyle.TextFont);
int y2count = (int)Math.Round((y2a.Y2LimMax - y2a.Y2LimMin) / y2a.Y2Tick) + 1;
for (int i = 0; i < ycount; i++)
{
float y2Tick = y2a.Y2LimMin + i * y2a.Y2Tick;
y2Tick = DataDeal.FloatAccur(y2Tick);
SizeF tempSize2 = g.MeasureString(y2Tick.ToString(), y2a.Y2TickStyle.TextFont);
if (y2TickSize.Width < tempSize2.Width)
{
y2TickSize = tempSize2;
}
}
rightMargin = XOffset + labelFontSize.Height + xSpacing + y2TickSize.Width + tickSpacing;
plotWidth = ChartArea.Width - (int)leftMargin - (int)rightMargin;
}
plotArea = new Rectangle(plotX, plotY, plotWidth, plotHeight);
}
