public SKPositionedRunBuffer AllocatePositionedRun(SKPaint font, int count, int textByteCount, SKRect?bounds)
{
if (font == null)
{
throw new ArgumentNullException(nameof(font));
}
var originalEncoding = font.TextEncoding;
try {
font.TextEncoding = SKTextEncoding.GlyphId;
SKRunBufferInternal runbuffer;
if (bounds is SKRect b)
{
SkiaApi.sk_textblob_builder_alloc_run_text_pos(Handle, font.GetFont().Handle, count, textByteCount, &b, &runbuffer);
}
else
{
SkiaApi.sk_textblob_builder_alloc_run_text_pos(Handle, font.GetFont().Handle, count, textByteCount, null, &runbuffer);
}
return(new SKPositionedRunBuffer(runbuffer, count, textByteCount));
} finally {
font.TextEncoding = originalEncoding;
}
}
public void DrawText(IntPtr buffer, int length, float x, float y, SKPaint paint)
{
if (buffer == IntPtr.Zero && length != 0)
{
throw new ArgumentNullException(nameof(buffer));
}
if (paint == null)
{
throw new ArgumentNullException(nameof(paint));
}
if (paint.TextAlign != SKTextAlign.Left)
{
var width = paint.MeasureText(buffer, length);
if (paint.TextAlign == SKTextAlign.Center)
{
width *= 0.5f;
}
x -= width;
}
using var blob = SKTextBlob.Create(buffer, length, paint.TextEncoding, paint.GetFont());
if (blob == null)
{
return;
}
DrawText(blob, x, y, paint);
}
public void DrawText(byte[] text, float x, float y, SKPaint paint)
{
if (text == null)
{
throw new ArgumentNullException(nameof(text));
}
if (paint == null)
{
throw new ArgumentNullException(nameof(paint));
}
if (paint.TextAlign != SKTextAlign.Left)
{
var width = paint.MeasureText(text);
if (paint.TextAlign == SKTextAlign.Center)
{
width *= 0.5f;
}
x -= width;
}
using var blob = SKTextBlob.Create(text, paint.TextEncoding, paint.GetFont());
if (blob == null)
{
return;
}
DrawText(blob, x, y, paint);
}
public void DrawTextOnPath(string text, SKPath path, SKPoint offset, bool warpGlyphs, SKPaint paint)
{
if (paint == null)
{
throw new ArgumentNullException(nameof(paint));
}
DrawTextOnPath(text, path, offset, warpGlyphs, paint.GetFont(), paint);
}
public void DrawTextOnPath(IntPtr buffer, int length, SKPath path, float hOffset, float vOffset, SKPaint paint)
{
if (buffer == IntPtr.Zero && length != 0)
{
throw new ArgumentNullException(nameof(buffer));
}
if (path == null)
{
throw new ArgumentNullException(nameof(path));
}
if (paint == null)
{
throw new ArgumentNullException(nameof(paint));
}
var font = paint.GetFont();
using var textPath = font.GetTextPathOnPath(buffer, length, paint.TextEncoding, path, paint.TextAlign, new SKPoint(hOffset, vOffset));
DrawPath(textPath, paint);
}
public void DrawPositionedText(byte[] text, SKPoint[] points, SKPaint paint)
{
if (text == null)
{
throw new ArgumentNullException(nameof(text));
}
if (paint == null)
{
throw new ArgumentNullException(nameof(paint));
}
if (points == null)
{
throw new ArgumentNullException(nameof(points));
}
using var blob = SKTextBlob.CreatePositioned(text, paint.TextEncoding, paint.GetFont(), points);
if (blob == null)
{
return;
}
DrawText(blob, 0, 0, paint);
}
public void DrawPositionedText(IntPtr buffer, int length, SKPoint[] points, SKPaint paint)
{
if (buffer == IntPtr.Zero && length != 0)
{
throw new ArgumentNullException(nameof(buffer));
}
if (paint == null)
{
throw new ArgumentNullException(nameof(paint));
}
if (points == null)
{
throw new ArgumentNullException(nameof(points));
}
using var blob = SKTextBlob.CreatePositioned(buffer, length, paint.TextEncoding, paint.GetFont(), points);
if (blob == null)
{
return;
}
DrawText(blob, 0, 0, paint);
}
public void DrawText(string text, float x, float y, SKPaint paint)
{
DrawText(text, x, y, paint.GetFont(), paint);
}