public TileBrushImplHelper(ITileBrush brush, Size targetSize)
{
_imageBrush = brush as IImageBrush;
_visualBrush = brush as IVisualBrush;
if (_imageBrush != null)
{
if (_imageBrush.Source == null)
{
return;
}
_imageSize = new Size(_imageBrush.Source.PixelWidth, _imageBrush.Source.PixelHeight);
IsValid = true;
}
else if (_visualBrush != null)
{
var control = _visualBrush.Visual as IControl;
if (control != null)
{
EnsureInitialized(control);
if (control.IsArrangeValid == false)
{
control.Measure(Size.Infinity);
control.Arrange(new Rect(control.DesiredSize));
}
_imageSize = control.Bounds.Size;
IsValid = true;
}
}
else
{
return;
}
_tileMode = brush.TileMode;
_sourceRect = brush.SourceRect.ToPixels(_imageSize);
DestinationRect = brush.DestinationRect.ToPixels(targetSize);
_scale = brush.Stretch.CalculateScaling(DestinationRect.Size, _sourceRect.Size);
_translate = CalculateTranslate(brush, _sourceRect, DestinationRect, _scale);
IntermediateSize = CalculateIntermediateSize(_tileMode, targetSize, DestinationRect.Size);
_transform = CalculateIntermediateTransform(
_tileMode,
_sourceRect,
DestinationRect,
_scale,
_translate,
out _drawRect);
}
public ImageBrushImpl(IImageBrush brush, Size destinationSize)
{
this.PlatformBrush = TileBrushes.CreateTileBrush(brush, destinationSize);
}
/// <summary>
/// Initializes a new instance of the <see cref="ImmutableImageBrush"/> class.
/// </summary>
/// <param name="source">The brush from which this brush's properties should be copied.</param>
public ImmutableImageBrush(IImageBrush source)
: base(source)
{
Source = source.Source;
}
