Font "Escapement" (angle)

[SheetJSDev]

This affects rotated text (for example, a vertical axis title in a chart)

The META_CREATEFONTINDIRECT record stores the angle in the Escapement field (https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-wmf/dabb1ed6-e5e8-4243-80ed-e63443e5484f). To be more precise, it stores the angle in tenths of a degree.

To support text angle, the following mantra works:

ctx.save();
ctx.translate(x_offset, y_offset);
ctx.rotate(-(escapement / 10) * Math.PI / 180);
ctx.fillText(text, 0, 0);
ctx.translate(-x_offset, -y_offset);
ctx.restore();