// Load a Direct2D bitmap from the given gdi resource.
public D2D.Bitmap LoadBitmap(Bitmap drawingBitmap)
{
D2D.Bitmap result = null;
//Lock the gdi resource
BitmapData drawingBitmapData = drawingBitmap.LockBits(
new Rectangle(0, 0, drawingBitmap.Width, drawingBitmap.Height),
ImageLockMode.ReadOnly, PixelFormat.Format32bppPArgb);
//Prepare loading the image from gdi resource
DataStream dataStream = new DataStream(
drawingBitmapData.Scan0,
drawingBitmapData.Stride * drawingBitmapData.Height,
true, false);
D2D.BitmapProperties properties = new D2D.BitmapProperties();
properties.PixelFormat = new D2D.PixelFormat(
DXGI.Format.B8G8R8A8_UNorm,
D2D.AlphaMode.Premultiplied);
//Load the image from the gdi resource
result = new D2D.Bitmap(
m_renderTarget,
new Size(drawingBitmap.Width, drawingBitmap.Height),
dataStream, drawingBitmapData.Stride,
properties);
//Unlock the gdi resource
drawingBitmap.UnlockBits(drawingBitmapData);
return(result);
}
/**
* Render with or without texture
**/
protected override void _render()
{
if (this._bitmap == null)
{
// Render in solid color
if (_brush == null)
_brush = new SolidColorBrush(Device.RenderTarget, Color);
Device.RenderTarget.FillRectangle(_brush, _rectangle);
return;
}
if (this._d2dBitmap == null)
{
// Load the texture
var bitmapData = this._bitmap.LockBits(
new Rectangle(new Point(0, 0), this._bitmap.Size),
System.Drawing.Imaging.ImageLockMode.ReadOnly,
System.Drawing.Imaging.PixelFormat.Format32bppPArgb
);
var dataStream = new SlimDX.DataStream(
bitmapData.Scan0,
bitmapData.Stride * bitmapData.Height,
true,
false
);
var d2dPixelFormat = new SlimDX.Direct2D.PixelFormat(
SlimDX.DXGI.Format.B8G8R8A8_UNorm,
SlimDX.Direct2D.AlphaMode.Premultiplied
);
var d2dBitmapProperties = new SlimDX.Direct2D.BitmapProperties();
d2dBitmapProperties.PixelFormat = d2dPixelFormat;
_d2dBitmap = new SlimDX.Direct2D.Bitmap(
Device.RenderTarget,
new Size(this._bitmap.Width, this._bitmap.Height),
dataStream,
bitmapData.Stride,
d2dBitmapProperties
);
this._bitmap.UnlockBits(bitmapData);
}
// Render the texture
Device.RenderTarget.DrawBitmap(_d2dBitmap, _rectangle);
}
