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 DrawTextOnPath(string text, SKPath path, SKPoint offset, bool warpGlyphs, SKFont font, SKPaint paint)
{
if (text == null)
{
throw new ArgumentNullException(nameof(text));
}
if (path == null)
{
throw new ArgumentNullException(nameof(path));
}
if (font == null)
{
throw new ArgumentNullException(nameof(font));
}
if (paint == null)
{
throw new ArgumentNullException(nameof(paint));
}
if (warpGlyphs)
{
using var textPath = font.GetTextPathOnPath(text, path, paint.TextAlign, offset);
DrawPath(textPath, paint);
}
else
{
using var blob = SKTextBlob.CreatePathPositioned(text, font, path, paint.TextAlign, offset);
if (blob != null)
{
DrawText(blob, 0, 0, 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);
}
// Build
public SKTextBlob Build()
{
var blob = SKTextBlob.GetObject(SkiaApi.sk_textblob_builder_make(Handle));
GC.KeepAlive(this);
return(blob);
}
public void DrawText(SKTextBlob text, float x, float y, SKPaint paint)
{
if (text == null)
{
throw new ArgumentNullException(nameof(text));
}
if (paint == null)
{
throw new ArgumentNullException(nameof(paint));
}
SkiaApi.sk_canvas_draw_text_blob(Handle, text.Handle, x, y, paint.Handle);
}
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 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);
}
// Build
public SKTextBlob Build() =>
SKTextBlob.GetObject(SkiaApi.sk_textblob_builder_make(Handle));
