public static void RenderTickLabels(PlotDimensions dims, Graphics gfx, TickCollection tc, Drawing.Font tickFont, Edge edge, float rotation, bool rulerMode, float PixelOffset, float MajorTickLength, float MinorTickLength)
{
if (tc.tickLabels is null || tc.tickLabels.Length == 0)
{
return;
}
using (var font = GDI.Font(tickFont))
using (var brush = GDI.Brush(tickFont.Color))
using (var sf = GDI.StringFormat())
{
// TODO: Refactor to improve rotated tick label rendering:
// 1) rotation should always be assumed
// 2) a separate function should translate/rotate/render/reset
// 3) all edges should support rotation
if (edge == Edge.Bottom)
{
if (rotation == 0)
{
sf.Alignment = rulerMode ? StringAlignment.Near : StringAlignment.Center;
sf.LineAlignment = StringAlignment.Near;
for (int i = 0; i < tc.tickPositionsMajor.Length; i++)
{
gfx.DrawString(tc.tickLabels[i], font, brush, format: sf,
x: dims.GetPixelX(tc.tickPositionsMajor[i]),
y: dims.DataOffsetY + dims.DataHeight + PixelOffset + MajorTickLength);
}
sf.Alignment = StringAlignment.Far;
gfx.DrawString(tc.cornerLabel, font, brush, format: sf,
x: dims.DataOffsetX + dims.DataWidth,
y: dims.DataOffsetY + dims.DataHeight + MajorTickLength + tc.maxLabelHeight);
}
else
{
for (int i = 0; i < tc.tickPositionsMajor.Length; i++)
{
float x = dims.GetPixelX(tc.tickPositionsMajor[i]);
float y = dims.DataOffsetY + dims.DataHeight + MajorTickLength + 3;
gfx.TranslateTransform(x, y);
gfx.RotateTransform(-rotation);
sf.Alignment = StringAlignment.Far;
sf.LineAlignment = StringAlignment.Center;
gfx.DrawString(tc.tickLabels[i], font, brush, 0, 0, sf);
gfx.ResetTransform();
}
}
}
else if (edge == Edge.Top)
{
sf.Alignment = rulerMode ? StringAlignment.Near : StringAlignment.Center;
sf.LineAlignment = StringAlignment.Far;
for (int i = 0; i < tc.tickPositionsMajor.Length; i++)
{
gfx.DrawString(tc.tickLabels[i], font, brush, format: sf,
x: dims.GetPixelX(tc.tickPositionsMajor[i]),
y: dims.DataOffsetY - PixelOffset - MajorTickLength);
}
}
else if (edge == Edge.Left)
{
if (rotation == 0)
{
sf.LineAlignment = rulerMode ? StringAlignment.Far : StringAlignment.Center;
sf.Alignment = StringAlignment.Far;
for (int i = 0; i < tc.tickPositionsMajor.Length; i++)
{
gfx.DrawString(tc.tickLabels[i], font, brush, format: sf,
x: dims.DataOffsetX - PixelOffset - MajorTickLength,
y: dims.GetPixelY(tc.tickPositionsMajor[i]));
}
sf.LineAlignment = StringAlignment.Far;
sf.Alignment = StringAlignment.Near;
gfx.DrawString(tc.cornerLabel, font, brush, dims.DataOffsetX, dims.DataOffsetY, sf);
}
else
{
for (int i = 0; i < tc.tickPositionsMajor.Length; i++)
{
float x = dims.DataOffsetX - PixelOffset - MajorTickLength;
float y = dims.GetPixelY(tc.tickPositionsMajor[i]);
gfx.TranslateTransform(x, y);
gfx.RotateTransform(-rotation);
sf.Alignment = StringAlignment.Far;
sf.LineAlignment = StringAlignment.Center;
gfx.DrawString(tc.tickLabels[i], font, brush, 0, 0, sf);
gfx.ResetTransform();
}
}
}
else if (edge == Edge.Right)
{
sf.LineAlignment = rulerMode ? StringAlignment.Far : StringAlignment.Center;
sf.Alignment = StringAlignment.Near;
for (int i = 0; i < tc.tickPositionsMajor.Length; i++)
{
gfx.DrawString(tc.tickLabels[i], font, brush, format: sf,
x: dims.DataOffsetX + PixelOffset + MajorTickLength + dims.DataWidth,
y: dims.GetPixelY(tc.tickPositionsMajor[i]));
}
}
else
{
throw new NotImplementedException();
}
}
}
public static void RenderTickLabels(PlotDimensions dims, Graphics gfx, TickCollection tc, Drawing.Font tickFont, Edge edge, float rotation, bool rulerMode, float PixelOffset, float MajorTickLength, float MinorTickLength)
{
if (tc.tickLabels is null || tc.tickLabels.Length == 0)
{
return;
}
using var font = GDI.Font(tickFont);
using var brush = GDI.Brush(tickFont.Color);
using var sf = GDI.StringFormat();
Tick[] visibleMajorTicks = tc.GetVisibleMajorTicks(dims);
switch (edge)
{
case Edge.Bottom:
for (int i = 0; i < visibleMajorTicks.Length; i++)
{
float x = dims.GetPixelX(visibleMajorTicks[i].Position);
float y = dims.DataOffsetY + dims.DataHeight + MajorTickLength;
gfx.TranslateTransform(x, y);
gfx.RotateTransform(-rotation);
sf.Alignment = rotation == 0 ? StringAlignment.Center : StringAlignment.Far;
if (rulerMode)
{
sf.Alignment = StringAlignment.Near;
}
sf.LineAlignment = rotation == 0 ? StringAlignment.Near : StringAlignment.Center;
gfx.DrawString(visibleMajorTicks[i].Label, font, brush, 0, 0, sf);
GDI.ResetTransformPreservingScale(gfx, dims);
}
break;
case Edge.Top:
for (int i = 0; i < visibleMajorTicks.Length; i++)
{
float x = dims.GetPixelX(visibleMajorTicks[i].Position);
float y = dims.DataOffsetY - MajorTickLength;
gfx.TranslateTransform(x, y);
gfx.RotateTransform(-rotation);
sf.Alignment = rotation == 0 ? StringAlignment.Center : StringAlignment.Near;
if (rulerMode)
{
sf.Alignment = StringAlignment.Near;
}
sf.LineAlignment = rotation == 0 ? StringAlignment.Far : StringAlignment.Center;
gfx.DrawString(visibleMajorTicks[i].Label, font, brush, 0, 0, sf);
GDI.ResetTransformPreservingScale(gfx, dims);
}
break;
case Edge.Left:
for (int i = 0; i < visibleMajorTicks.Length; i++)
{
float x = dims.DataOffsetX - PixelOffset - MajorTickLength;
float y = dims.GetPixelY(visibleMajorTicks[i].Position);
gfx.TranslateTransform(x, y);
gfx.RotateTransform(-rotation);
sf.Alignment = StringAlignment.Far;
sf.LineAlignment = rulerMode ? StringAlignment.Far : StringAlignment.Center;
if (rotation == 90)
{
sf.Alignment = StringAlignment.Center;
sf.LineAlignment = StringAlignment.Far;
}
gfx.DrawString(visibleMajorTicks[i].Label, font, brush, 0, 0, sf);
GDI.ResetTransformPreservingScale(gfx, dims);
}
break;
case Edge.Right:
for (int i = 0; i < visibleMajorTicks.Length; i++)
{
float x = dims.DataOffsetX + PixelOffset + MajorTickLength + dims.DataWidth;
float y = dims.GetPixelY(visibleMajorTicks[i].Position);
gfx.TranslateTransform(x, y);
gfx.RotateTransform(-rotation);
sf.Alignment = StringAlignment.Near;
sf.LineAlignment = rulerMode ? StringAlignment.Far : StringAlignment.Center;
if (rotation == 90)
{
sf.Alignment = StringAlignment.Center;
sf.LineAlignment = StringAlignment.Near;
}
gfx.DrawString(visibleMajorTicks[i].Label, font, brush, 0, 0, sf);
GDI.ResetTransformPreservingScale(gfx, dims);
}
break;
default:
throw new NotImplementedException($"unsupported edge type {edge}");
}
if (!string.IsNullOrWhiteSpace(tc.CornerLabel))
{
switch (edge)
{
case Edge.Bottom:
sf.Alignment = StringAlignment.Far;
sf.LineAlignment = StringAlignment.Near;
gfx.DrawString(s: "\n" + tc.CornerLabel,
x: dims.DataOffsetX + dims.DataWidth,
y: dims.DataOffsetY + dims.DataHeight + MajorTickLength,
font: font, brush: brush, format: sf);
break;
case Edge.Left:
sf.Alignment = StringAlignment.Near;
sf.LineAlignment = StringAlignment.Far;
gfx.DrawString(s: "\n" + tc.CornerLabel,
x: dims.DataOffsetX,
y: dims.DataOffsetY,
font: font, brush: brush, format: sf);
break;
case Edge.Top:
throw new NotImplementedException("multiplier and offset notation is not supported for right and top axes");
case Edge.Right:
throw new NotImplementedException("multiplier and offset notation is not supported for right and top axes");
default:
throw new NotImplementedException($"unsupported edge type {edge}");
}
}
}