internal bool draw()
{
Font font = gdef.smallFont;
Color gridColor = gdef.colors[COLOR_GRID];
Color mGridColor = gdef.colors[COLOR_MGRID];
Color fontColor = gdef.colors[COLOR_FONT];
int fontHeight = (int)Math.Ceiling(rrdGraph.getSmallFontHeight());
int labelOffset = (int)(worker.getFontAscent(font) / 2);
double pixpex = (double)im.ysize / (Math.Log10(im.maxval) - Math.Log10(im.minval));
if (Double.IsNaN(pixpex))
{
return(false);
}
double minstep, pixperstep;
int minoridx = 0, majoridx = 0;
for (int i = 0; yloglab[i][0] > 0; i++)
{
minstep = Math.Log10(yloglab[i][0]);
for (int ii = 1; yloglab[i][ii + 1] > 0; ii++)
{
if (yloglab[i][ii + 2] == 0)
{
minstep = Math.Log10(yloglab[i][ii + 1]) - Math.Log10(yloglab[i][ii]);
break;
}
}
pixperstep = pixpex * minstep;
if (pixperstep > 5)
{
minoridx = i;
}
if (pixperstep > 2 * fontHeight)
{
majoridx = i;
}
}
int x0 = im.xorigin, x1 = x0 + im.xsize;
for (double value = Math.Pow(10, Math.Log10(im.minval)
- Math.Log10(im.minval) % Math.Log10(yloglab[minoridx][0]));
value <= im.maxval;
value *= yloglab[minoridx][0])
{
if (value < im.minval)
{
continue;
}
int i = 0;
while (yloglab[minoridx][++i] > 0)
{
int y = rrdGraph.mapper.ytr(value * yloglab[minoridx][i]);
if (y <= im.yorigin - im.ysize)
{
break;
}
worker.drawLine(x0 - 1, y, x0 + 1, y, gridColor, TICK_STROKE);
worker.drawLine(x1 - 1, y, x1 + 1, y, gridColor, TICK_STROKE);
worker.drawLine(x0, y, x1, y, gridColor, GRID_STROKE);
}
}
for (double value = Math.Pow(10, Math.Log10(im.minval)
- (Math.Log10(im.minval) % Math.Log10(yloglab[majoridx][0])));
value <= im.maxval;
value *= yloglab[majoridx][0])
{
if (value < im.minval)
{
continue;
}
int i = 0;
while (yloglab[majoridx][++i] > 0)
{
int y = rrdGraph.mapper.ytr(value * yloglab[majoridx][i]);
if (y <= im.yorigin - im.ysize)
{
break;
}
worker.drawLine(x0 - 2, y, x0 + 2, y, mGridColor, TICK_STROKE);
worker.drawLine(x1 - 2, y, x1 + 2, y, mGridColor, TICK_STROKE);
worker.drawLine(x0, y, x1, y, mGridColor, GRID_STROKE);
String graph_label = string.Format("{0,3:E0}", value * yloglab[majoridx][i]);
int length = (int)(worker.getStringWidth(graph_label, font));
worker.drawString(graph_label, x0 - length - PADDING_VLABEL, y + labelOffset, font, fontColor);
}
}
return(true);
}
