public SharpDX.Direct2D1.Bitmap1 RenderLabel(
float imageWidth,
float imageHeight,
Color4 foregroundColor,
Vector2 origin,
TextLayout textLayout,
float dpi = DEFAULT_DPI,
SharpDX.DXGI.Format format = SharpDX.DXGI.Format.B8G8R8A8_UNorm,
SharpDX.Direct2D1.AlphaMode alpha = AlphaMode.Premultiplied)
{
var renderTarget = CreateRenderTarget(imageWidth, imageHeight, dpi, format, alpha);
using (var drawingContext = CreateDrawingContext(renderTarget))
{
// Begin our drawing
drawingContext.BeginDraw();
// Clear to transparent
drawingContext.Clear(TransparentColor);
// Create our brush to actually draw with
var solidBrush = new SolidColorBrush(drawingContext, foregroundColor);
// Draw the text to the bitmap
drawingContext.DrawTextLayout(origin, textLayout, solidBrush);
// End our drawing
drawingContext.EndDraw();
}
return(renderTarget);
}
/// <summary>
/// Creates a new texture description for a <see cref="BitmapTarget" />.
/// </summary>
/// <param name="dpiX">The width.</param>
/// <param name="dpiY">The height.</param>
/// <param name="format">Describes the format to use.</param>
/// <param name="alphaMode">The <see cref="AlphaMode"/>.</param>
/// <param name="options">Sets the bitmap options.</param>
/// <param name="colorContext">The <see cref="ColorContext"/>.</param>
/// <returns>A new instance of <see cref="BitmapTarget" /> class.</returns>
public static BitmapProperties1 CreateDescription(float dpiX, float dpiY, PixelFormat format,
AlphaMode alphaMode = AlphaMode.Premultiplied,
BitmapOptions options = BitmapOptions.Target | BitmapOptions.CannotDraw, ColorContext colorContext = null)
{
// Make sure that the texture to create is a render target
options |= BitmapOptions.Target;
var description = NewDescription(dpiX, dpiY, format, alphaMode, options, colorContext);
return(description);
}
public SharpDX.Direct2D1.Bitmap1 CreateRenderTarget(
float width,
float height,
float dpi = DEFAULT_DPI,
SharpDX.DXGI.Format format = SharpDX.DXGI.Format.B8G8R8A8_UNorm,
SharpDX.Direct2D1.AlphaMode alpha = AlphaMode.Premultiplied)
{
var bitmapProperties = new SharpDX.Direct2D1.BitmapProperties1()
{
BitmapOptions = BitmapOptions.Target,
DpiX = dpi,
DpiY = dpi,
PixelFormat = new SharpDX.Direct2D1.PixelFormat(format, alpha)
};
var pixelWidth = SizeDipsToPixels(width, dpi);
var pixelHeight = SizeDipsToPixels(height, dpi);
var bitmap = new SharpDX.Direct2D1.Bitmap1(d2dResourceCreationDeviceContext,
new Size2(pixelWidth, pixelHeight), bitmapProperties);
return(bitmap);
}
public async Task <System.IO.MemoryStream> RenderLabelToStream(
float imageWidth,
float imageHeight,
Color4 foregroundColor,
Vector2 origin,
TextLayout textLayout,
float dpi = DEFAULT_DPI,
SharpDX.DXGI.Format format = SharpDX.DXGI.Format.B8G8R8A8_UNorm,
SharpDX.Direct2D1.AlphaMode alpha = AlphaMode.Premultiplied)
{
// Get stream
var pngStream = new MemoryStream();
using (var renderTarget = RenderLabel(
imageWidth,
imageHeight,
foregroundColor,
origin,
textLayout,
dpi,
format,
alpha))
{
pngStream.Position = 0;
// Create a WIC outputstream
using (var wicStream = new WICStream(FactoryImaging, pngStream))
{
var size = renderTarget.PixelSize;
// Initialize a Png encoder with this stream
using (var wicBitmapEncoder = new PngBitmapEncoder(FactoryImaging, wicStream))
{
// Create a Frame encoder
using (var wicFrameEncoder = new BitmapFrameEncode(wicBitmapEncoder))
{
wicFrameEncoder.Initialize();
// Create image encoder
ImageEncoder wicImageEncoder;
ImagingFactory2 factory2 = new ImagingFactory2();
wicImageEncoder = new ImageEncoder(factory2, D2DDevice);
var imgParams = new ImageParameters();
imgParams.PixelFormat =
new SharpDX.Direct2D1.PixelFormat(SharpDX.DXGI.Format.B8G8R8A8_UNorm,
AlphaMode.Premultiplied);
imgParams.PixelHeight = (int)size.Height;
imgParams.PixelWidth = (int)size.Width;
wicImageEncoder.WriteFrame(renderTarget, wicFrameEncoder, imgParams);
//// Commit changes
wicFrameEncoder.Commit();
wicBitmapEncoder.Commit();
byte[] buffer = new byte[pngStream.Length];
pngStream.Position = 0;
await pngStream.ReadAsync(buffer, 0, (int)pngStream.Length);
}
}
}
}
return(pngStream);
}
protected static BitmapProperties1 NewDescription(float dpiX, float dpiY, PixelFormat format, AlphaMode alphaMode,
BitmapOptions bitmapOptions, ColorContext colorContext)
{
var pixelFormat = new SharpDX.Direct2D1.PixelFormat(format, alphaMode);
return(new BitmapProperties1(pixelFormat, dpiX, dpiY, bitmapOptions, colorContext));
}
