public string Draw(BaseChartSettings settings)
{
StringBuilder rst = new StringBuilder();
var paras = (BarChartSettings)settings;
//绘制标题
StringBuilder title = new StringBuilder();
title.Append(" <title>" + paras.Title + "</title> ");
title.Append(" <g> ");
title.Append(" <text x=\"287\" y=\"246\" font-size=\"18\">" + paras.XTitle + "</text> ");
title.Append(" <text x=\"52\" y=\"150\" font-size=\"18\" transform=\"rotate(-90,52,150)\">" + paras.YTitle + "</text> ");
title.Append(" <text x=\"239\" y=\"24\" font-size=\"24\">" + paras.Title + "</text> ");
title.Append(" </g> ");
//绘制x轴和y轴的刻度
StringBuilder scale = new StringBuilder();
int xScaleCount = paras.Bars.Count;
int xScaleSpace = 550 / xScaleCount;
string xScale = string.Empty;
for (int i = 0; i < xScaleCount; i++)
{
xScale += " v7 m" + xScaleSpace.ToString() + ",-7 ";
}
scale.Append(" <g id=\"coordinate\" stroke=\"#003f7f\" fill=\"white\"> ");
scale.Append(" <path id=\"xy\" d=\"M90,200 h550 m-550,0 v-160\"></path> ");
scale.Append(" <path id=\"xy-2\" d=\"M90,40 m550,0 v160\" stroke-dasharray=\"1,5\"></path> ");
scale.Append(" <path id=\"lines\" d=\"M90,40 h550 m-550,32 h550 m-550,32 h550 m-550,32 h550 m-550,32 h550 m-550,32\" stroke-dasharray=\"1,5\"></path> ");
scale.Append(" <path id=\"ys\" d=\"M90,40 h-7 m7,32 h-7 m7,32 h-7 m7,32 h-7 m7,32 h-7 m7,32 h-7 m7,32\"></path> ");
scale.Append(" <path id=\"xs\" d=\"M90,200 v7 m" + xScaleSpace.ToString() + ",-7 " + xScale + "\"></path> ");
scale.Append(" </g> ");
//绘制y轴的坐标
int maxVal = paras.Bars.Max();
int yInterval = maxVal / 5 + 1;
StringBuilder yCoordinate = new StringBuilder();
yCoordinate.Append(" <g id=\"yt\" direction=\"rtl\"> ");
yCoordinate.Append(" <text x=\"81\" y=\"44\" font-size=\"14\">" + (yInterval * 5).ToString() + "</text> ");
yCoordinate.Append(" <text x=\"81\" y=\"76\" font-size=\"14\">" + (yInterval * 4).ToString() + "</text> ");
yCoordinate.Append(" <text x=\"81\" y=\"108\" font-size=\"14\">" + (yInterval * 3).ToString() + "</text> ");
yCoordinate.Append(" <text x=\"81\" y=\"140\" font-size=\"14\">" + (yInterval * 2).ToString() + "</text> ");
yCoordinate.Append(" <text x=\"81\" y=\"172\" font-size=\"14\">" + (yInterval * 1).ToString() + "</text> ");
yCoordinate.Append(" </g> ");
//绘制x轴的坐标
double xInterval = (double)paras.XMax / xScaleCount;
StringBuilder xCoordinate = new StringBuilder();
xCoordinate.Append(" <g id=\"xt\"> ");
xCoordinate.Append(" <text x=\"86\" y=\"210\" font-size=\"14\" transform=\"rotate(90,86,210)\">0</text> ");
for (int i = 0; i < xScaleCount; i++)
{
int xp = 86 + xScaleSpace * (i + 1);
double xc = xInterval * (i + 1);
xCoordinate.Append(" <text x=\"" + xp.ToString() + "\" y=\"210\" font-size=\"14\" transform=\"rotate(90," + xp.ToString() + ",210)\">" + xc.ToString() + "</text> ");
}
xCoordinate.Append(" </g> ");
//绘制矩形
StringBuilder bar = new StringBuilder();
StringBuilder rect = new StringBuilder();
StringBuilder text = new StringBuilder();
int rectIdx = 0;
foreach (var item in paras.Bars)
{
int xRect = 90 + rectIdx * xScaleSpace;
double rectHeight = ((double)32 / yInterval) * item;
double yRect = 200 - rectHeight;
int rectWidth = xScaleSpace - 2;
string rectID = "R" + rectIdx.ToString() + "_" + DateTime.Now.Ticks.ToString();
rect.Append("<rect id=\"" + rectID + "\" x=\"" + xRect.ToString() + "\" y=\"" + yRect.ToString() + "\" width=\"" + rectWidth.ToString() + "\" height=\"" + rectHeight.ToString() + "\"></rect>");
text.Append(" <text x=\"" + xRect.ToString() + "\" y=\"" + (yRect - 6).ToString() + "\" display=\"none\"> " + item.ToString() + " ");
text.Append(" <set attributeName=\"display\" from=\"none\" to=\"block\" begin=\"" + rectID + ".mouseover\" end=\"" + rectID + ".mouseout\"></set> ");
text.Append(" </text> ");
rectIdx++;
}
bar.Append(" <g id=\"bar\" fill=\"red\"> ");
bar.Append(rect.ToString());
bar.Append(" </g> ");
bar.Append(" <g id=\"label\"> ");
bar.Append(text.ToString());
bar.Append(" </g> ");
rst.Append(" <svg x=\"0\" y=\"0\" width=\"" + paras.Width.ToString() + "\" height=\"" + paras.Height.ToString() + "\" viewBox=\"0,0,650,250\" xmlns=\"http://www.w3.org/2000/svg\"> ");
rst.Append(title.ToString());
rst.Append(scale.ToString());
rst.Append(yCoordinate.ToString());
rst.Append(xCoordinate.ToString());
rst.Append(bar.ToString());
rst.Append(" </svg> ");
return rst.ToString();
}
public string Draw(BaseChartSettings settings)
{
throw new NotImplementedException();
}
