protected override void BeforeImageApply()
{
base.BeforeImageApply();
// do everything at the image level as we are delegating the processing down to other processors
var style = new RendererOptions(this.Font, this.Options.DpiX, this.Options.DpiY, this.Location)
{
ApplyKerning = this.Options.ApplyKerning,
TabWidth = this.Options.TabWidth,
WrappingWidth = this.Options.WrapTextWidth,
HorizontalAlignment = this.Options.HorizontalAlignment,
VerticalAlignment = this.Options.VerticalAlignment,
FallbackFontFamilies = this.Options.FallbackFonts,
ColorFontSupport = this.definition.Options.RenderColorFonts ? ColorFontSupport.MicrosoftColrFormat : ColorFontSupport.None,
};
// (this.definition.Options.RenderColorFonts)
//{
this.textRenderer = new ColorCachingGlyphRenderer(this.Configuration.MemoryAllocator, this.Text.Length, this.Pen, this.Brush != null);
// }
// else
// {
// this.textRenderer = new CachingGlyphRenderer(this.Configuration.MemoryAllocator, this.Text.Length, this.Pen, this.Brush != null);
// }
this.textRenderer.Options = (GraphicsOptions)this.Options;
var renderer = new TextRenderer(this.textRenderer);
renderer.RenderText(this.Text, style);
}
public static void RenderTextProcessor(FontFamily fontFamily, string text, float pointSize = 12, IEnumerable <FontFamily> fallbackFonts = null)
{
var textOptions = new TextGraphicsOptionsCopy
{
ApplyKerning = true,
DpiX = 96,
DpiY = 96,
RenderColorFonts = true,
};
if (fallbackFonts != null)
{
textOptions.FallbackFonts.AddRange(fallbackFonts);
}
var font = new Font(fontFamily, pointSize);
var renderOptions = new RendererOptions(font, textOptions.DpiX, textOptions.DpiY)
{
ApplyKerning = true,
ColorFontSupport = ColorFontSupport.MicrosoftColrFormat,
FallbackFontFamilies = textOptions.FallbackFonts?.ToArray()
};
var textSize = TextMeasurer.Measure(text, renderOptions);
using (var img = new Image <Rgba32>((int)Math.Ceiling(textSize.Width) + 20, (int)Math.Ceiling(textSize.Height) + 20))
{
img.Mutate(x => x.Fill(Color.White).ApplyProcessor(new DrawTextProcessorCopy(textOptions, text, font, new SolidBrushCopy(Color.Black), null, new PointF(5, 5))));
string fullPath = CreatePath(font.Name, text + ".caching.png");
Directory.CreateDirectory(System.IO.Path.GetDirectoryName(fullPath));
img.Save(fullPath);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="DrawTextProcessorCopy"/> class.
/// </summary>
/// <param name="options">The options</param>
/// <param name="text">The text we want to render</param>
/// <param name="font">The font we want to render with</param>
/// <param name="brush">The brush to source pixel colors from.</param>
/// <param name="pen">The pen to outline text with.</param>
/// <param name="location">The location on the image to start drawing the text from.</param>
public DrawTextProcessorCopy(TextGraphicsOptionsCopy options, string text, Font font, SolidBrushCopy brush, IPen pen, PointF location)
{
// Guard.NotNull(text, nameof(text));
// Guard.NotNull(font, nameof(font));
if (brush is null && pen is null)
{
throw new ArgumentNullException($"Expected a {nameof(brush)} or {nameof(pen)}. Both were null");
}
this.Options = options;
this.Text = text;
this.Font = font;
this.Location = location;
this.Brush = brush;
this.Pen = pen;
}
public static void RenderTextProcessorWithAlignment(
FontFamily fontFamily,
string text,
float pointSize = 12,
IEnumerable <FontFamily> fallbackFonts = null)
{
foreach (VerticalAlignment va in (VerticalAlignment[])Enum.GetValues(typeof(VerticalAlignment)))
{
if (va != VerticalAlignment.Center)
{
//continue;
}
foreach (HorizontalAlignment ha in (HorizontalAlignment[])Enum.GetValues(typeof(HorizontalAlignment)))
{
if (ha != HorizontalAlignment.Center)
{
// continue;
}
var textOptions = new TextGraphicsOptionsCopy
{
ApplyKerning = true,
DpiX = 96,
DpiY = 96,
RenderColorFonts = true,
VerticalAlignment = va,
HorizontalAlignment = ha
};
if (fallbackFonts != null)
{
textOptions.FallbackFonts.AddRange(fallbackFonts);
}
var font = new Font(fontFamily, pointSize);
var renderOptions = new RendererOptions(font, textOptions.DpiX, textOptions.DpiY)
{
ApplyKerning = true,
ColorFontSupport = ColorFontSupport.MicrosoftColrFormat,
FallbackFontFamilies = textOptions.FallbackFonts?.ToArray(),
VerticalAlignment = va,
HorizontalAlignment = ha
};
FontRectangle textSize = TextMeasurer.Measure(text, renderOptions);
using var img = new Image <Rgba32>(((int)textSize.Width * 2) + 20, ((int)textSize.Height * 2) + 20);
Size size = img.Size();
img.Mutate(x => x.Fill(Color.White).ApplyProcessor(
new DrawTextProcessorCopy(
textOptions,
text,
font,
new SolidBrushCopy(Color.Black),
null,
new PointF(size.Width / 2F, size.Height / 2F))));
string h = ha.ToString().Replace(nameof(HorizontalAlignment), string.Empty).ToLower();
string v = va.ToString().Replace(nameof(VerticalAlignment), string.Empty).ToLower();
string fullPath = CreatePath(font.Name, text + "-" + h + "-" + v + ".png");
Directory.CreateDirectory(System.IO.Path.GetDirectoryName(fullPath));
img.Save(fullPath);
}
}
}
