private void IterateString(string text, Vector2 position, bool draw, float scale, Color4 color, CoordinateType coordinateType,
out StringMetrics metrics)
{
metrics = new StringMetrics();
float scalY = coordinateType == CoordinateType.SNorm ? -1 : 1;
var visualText = NBidi.NBidi.LogicalToVisual(text);
var codePoints = Helpers.ConvertToCodePointArray(visualText);
for (var i = 0; i < codePoints.Length; i++)
{
var c = codePoints[i];
var charDesc = GetCharDescription(c);
var charMetrics = charDesc.ToStringMetrics(position, scale, scale * scalY);
if (draw)
{
if (charMetrics.FullRectSize.X != 0 && charMetrics.FullRectSize.Y != 0)
{
var posY = position.Y - scalY * charMetrics.OverhangTop;
var posX = position.X - charMetrics.OverhangLeft;
Sprite.Draw(charDesc.TableDescription.Srv, new Vector2(posX, posY), charMetrics.FullRectSize, Vector2.Zero, 0,
charDesc.TexCoordsStart, charDesc.TexCoordsSize, color, coordinateType);
}
}
metrics.Merge(charMetrics);
position.X += charMetrics.Size.X;
// Break newlines
if (c == '\r')
{
position.X = metrics.TopLeft.X;
}
if (c == '\n')
{
position.Y = metrics.BottomRight.Y - charMetrics.Size.Y / 2;
}
}
}
/// <summary>
/// Draws the string in the specified coordinate system aligned in the given rectangle. The text is not clipped or wrapped.
/// </summary>
/// <param name="text">The text to draw</param>
/// <param name="rect">The rectangle in which to align the text</param>
/// <param name="align">Alignment of text in rectangle</param>
/// <param name="realFontSize">The real font size in the chosen coordinate system</param>
/// <param name="color">The color in which to draw the text</param>
/// <param name="coordinateType">The chosen coordinate system</param>
/// <returns>The StringMetrics for the rendered text</returns>
public StringMetrics DrawString(string text, RectangleF rect, TextAlignment align, float realFontSize, Color4 color,
CoordinateType coordinateType)
{
// If text is aligned top and left, no adjustment has to be made
if (align.HasFlag(TextAlignment.Top) && align.HasFlag(TextAlignment.Left))
{
return(DrawString(text, new Vector2(rect.X, rect.Y), realFontSize, color, coordinateType));
}
text = text.Replace("\r", "");
var rawTextMetrics = MeasureString(text, realFontSize, coordinateType);
var mMetrics = MeasureString("m", realFontSize, coordinateType);
float startY;
if (align.HasFlag(TextAlignment.Top))
{
startY = rect.Top;
}
else if (align.HasFlag(TextAlignment.VerticalCenter))
{
startY = rect.Top + rect.Height / 2 - rawTextMetrics.Size.Y / 2;
}
else
{
startY = rect.Bottom - rawTextMetrics.Size.Y;
}
var totalMetrics = new StringMetrics();
// break text into lines
var lines = text.Split('\n');
for (var i = 0; i < lines.Length; i++)
{
var line = lines[i];
float startX;
if (align.HasFlag(TextAlignment.Left))
{
startX = rect.X;
}
else
{
var lineMetrics = MeasureString(line, realFontSize, coordinateType);
startX = align.HasFlag(TextAlignment.HorizontalCenter) ?
rect.X + rect.Width / 2 - lineMetrics.Size.X / 2 :
rect.Right - lineMetrics.Size.X;
}
{
var lineMetrics = DrawString(line, new Vector2(startX, startY), realFontSize, color, coordinateType);
startY += mMetrics.Size.Y < 0 ?
Math.Min(lineMetrics.Size.Y, mMetrics.Size.Y) :
Math.Max(lineMetrics.Size.Y, mMetrics.Size.Y);
totalMetrics.Merge(lineMetrics);
}
}
return(totalMetrics);
}
private void IterateString(string text, Vector2 position, float angle, bool draw, float scale, Color4 color, CoordinateType coordinateType,
out StringMetrics metrics)
{
metrics = new StringMetrics();
float scalY = coordinateType == CoordinateType.SNorm ? -1 : 1;
var visualText = NBidi.NBidi.LogicalToVisual(text);
var codePoints = Helpers.ConvertToCodePointArray(visualText);
float sine, cosine;
if (angle != 0f)
{
sine = (float)Math.Sin(angle);
cosine = (float)Math.Cos(angle);
}
else
{
sine = cosine = 0f;
}
var x = 0f;
var y = Lazier.Create(() => Math.Abs(GetCharDescription('M').CharSize.Y *scale *scalY));
for (var i = 0; i < codePoints.Length; i++)
{
var c = codePoints[i];
var charDesc = GetCharDescription(c);
var charMetrics = charDesc.ToStringMetrics(position, scale, scale * scalY);
metrics.Merge(charMetrics);
if (c != '\r' && c != '\n')
{
if (draw)
{
var h = charMetrics.FullRectSize.Y;
if (h != 0 && charMetrics.FullRectSize.X != 0)
{
var fix = new Vector2(-charMetrics.OverhangLeft, -scalY * charMetrics.OverhangTop);
if (angle != 0f)
{
fix = SpriteRenderer.Rotate(fix, sine, cosine);
}
Sprite.Draw(charDesc.TableDescription.Srv, position + fix, charMetrics.FullRectSize,
Vector2.Zero, sine, cosine, charDesc.TexCoordsStart, charDesc.TexCoordsSize, color, coordinateType);
}
}
}
var delta = new Vector2(charMetrics.Size.X + KerningAdjustment, 0f);
switch (c)
{
case '\n':
delta.Y += y.Value;
goto case '\r';
case '\r':
delta.X = -x;
x = 0f;
break;
default:
x += delta.X;
break;
}
if (angle != 0f)
{
delta = SpriteRenderer.Rotate(delta, sine, cosine);
}
position += delta;
}
}