public void VerticalAlignmentTests(
VerticalAlignment vertical,
HorizontalAlignment horizental,
float top, float left)
{
string text = "hello world\nhello";
Font font = CreateFont(text);
int scaleFactor = 72 * font.EmSize; // 72 * emSize means 1 point = 1px
var span = new RendererOptions(font, scaleFactor)
{
HorizontalAlignment = horizental,
VerticalAlignment = vertical
};
IReadOnlyList <GlyphLayout> glyphsToRender = new TextLayout().GenerateLayout(text.AsSpan(), span);
IFontInstance fontInst = span.Font.Instance;
float lineHeight = (fontInst.LineHeight * span.Font.Size) / (fontInst.EmSize * 72);
lineHeight *= scaleFactor;
FontRectangle bound = TextMeasurer.GetBounds(glyphsToRender, new Vector2(span.DpiX, span.DpiY));
Assert.Equal(310, bound.Width, 3);
Assert.Equal(40, bound.Height, 3);
Assert.Equal(left, bound.Left, 3);
Assert.Equal(top, bound.Top, 3);
}