internal InteropBitmap(IntPtr hbitmap, IntPtr hpalette, Int32Rect sourceRect, BitmapSizeOptions sizeOptions, WICBitmapAlphaChannelOption alphaOptions) : base(true) // Use virtuals { _bitmapInit.BeginInit(); using (FactoryMaker myFactory = new FactoryMaker()) { HRESULT.Check(UnsafeNativeMethods.WICImagingFactory.CreateBitmapFromHBITMAP( myFactory.ImagingFactoryPtr, hbitmap, hpalette, alphaOptions, out _unmanagedSource)); Debug.Assert (_unmanagedSource != null && !_unmanagedSource.IsInvalid); } _unmanagedSource.CalculateSize(); _sizeOptions = sizeOptions; _sourceRect = sourceRect; _syncObject = _unmanagedSource; _bitmapInit.EndInit(); FinalizeCreation(); }
unsafe public static BitmapSource CreateBitmapSourceFromHBitmap( IntPtr bitmap, IntPtr palette, Int32Rect sourceRect, BitmapSizeOptions sizeOptions) { SecurityHelper.DemandUnmanagedCode(); // CR: [....] (1681459) return CriticalCreateBitmapSourceFromHBitmap(bitmap, palette, sourceRect, sizeOptions, WICBitmapAlphaChannelOption.WICBitmapUseAlpha); }
unsafe internal static BitmapSource CriticalCreateBitmapSourceFromHBitmap( IntPtr bitmap, IntPtr palette, Int32Rect sourceRect, BitmapSizeOptions sizeOptions, WICBitmapAlphaChannelOption alphaOptions) { if (bitmap == IntPtr.Zero) { throw new ArgumentNullException("bitmap"); } return new InteropBitmap(bitmap, palette, sourceRect, sizeOptions, alphaOptions); // use the critical version }
public static BitmapSource ConverToBitmapSource(this Bitmap b) { try { //Use existing Interop functionality to perform conversion IntPtr HBitmap = ((System.Drawing.Bitmap)b).GetHbitmap(); System.Windows.Media.Imaging.BitmapSizeOptions sizeOptions = System.Windows.Media.Imaging.BitmapSizeOptions.FromEmptyOptions(); return(System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap( HBitmap, IntPtr.Zero, Int32Rect.Empty, sizeOptions)); } catch { return(null); } }
/// <summary> /// Constructs an BitmapSizeOptions that does not preserve the aspect ratio and /// instead uses dimensions pixelWidth x pixelHeight. /// </summary> /// <param name="rotation">Angle to rotate</param> public static BitmapSizeOptions FromRotation(Rotation rotation) { switch(rotation) { case Rotation.Rotate0: case Rotation.Rotate90: case Rotation.Rotate180: case Rotation.Rotate270: break; default: throw new ArgumentException(SR.Get(SRID.Image_SizeOptionsAngle), "rotation"); } BitmapSizeOptions sizeOptions = new BitmapSizeOptions(); sizeOptions._rotationAngle = rotation; sizeOptions._preservesAspectRatio = true; sizeOptions._pixelWidth = 0; sizeOptions._pixelHeight = 0; return sizeOptions; }
/// <summary> /// Constructs an BitmapSizeOptions that does not preserve the aspect ratio and /// instead uses dimensions pixelWidth x pixelHeight. /// </summary> /// <param name="pixelWidth">Width of the resulting Bitmap</param> /// <param name="pixelHeight">Height of the resulting Bitmap</param> public static BitmapSizeOptions FromWidthAndHeight(int pixelWidth, int pixelHeight) { if (pixelWidth <= 0) { throw new System.ArgumentOutOfRangeException("pixelWidth", SR.Get(SRID.ParameterMustBeGreaterThanZero)); } if (pixelHeight <= 0) { throw new System.ArgumentOutOfRangeException("pixelHeight", SR.Get(SRID.ParameterMustBeGreaterThanZero)); } BitmapSizeOptions sizeOptions = new BitmapSizeOptions(); sizeOptions._rotationAngle = Rotation.Rotate0; sizeOptions._preservesAspectRatio = false; sizeOptions._pixelWidth = pixelWidth; sizeOptions._pixelHeight = pixelHeight; return sizeOptions; }
/// <summary> /// Constructs an identity BitmapSizeOptions (when passed to a TransformedBitmap, the /// input is the same as the output). /// </summary> public static BitmapSizeOptions FromEmptyOptions() { BitmapSizeOptions sizeOptions = new BitmapSizeOptions(); sizeOptions._rotationAngle = Rotation.Rotate0; sizeOptions._preservesAspectRatio = true; sizeOptions._pixelHeight = 0; sizeOptions._pixelWidth = 0; return sizeOptions; }
internal InteropBitmap(IntPtr hicon, Int32Rect sourceRect, BitmapSizeOptions sizeOptions) : base(true) // Use virtuals { SecurityHelper.DemandUnmanagedCode(); _bitmapInit.BeginInit(); using (FactoryMaker myFactory = new FactoryMaker()) { HRESULT.Check(UnsafeNativeMethods.WICImagingFactory.CreateBitmapFromHICON( myFactory.ImagingFactoryPtr, hicon, out _unmanagedSource)); Debug.Assert (_unmanagedSource != null && !_unmanagedSource.IsInvalid); } _unmanagedSource.CalculateSize(); _sourceRect = sourceRect; _sizeOptions = sizeOptions; _syncObject = _unmanagedSource; _bitmapInit.EndInit(); FinalizeCreation(); }
unsafe public static BitmapSource CreateBitmapSourceFromHIcon( IntPtr icon, Int32Rect sourceRect, BitmapSizeOptions sizeOptions) { SecurityHelper.DemandUnmanagedCode(); if (icon == IntPtr.Zero) { throw new ArgumentNullException("icon"); } return new InteropBitmap(icon, sourceRect, sizeOptions); }