private static void DrawMarqueeToolRectangular(this CanvasDrawingSession drawingSession, ICanvasResourceCreator resourceCreator, TransformerRect transformerRect, Rect sourceRectangle, MarqueeCompositeMode compositeMode = MarqueeCompositeMode.New)
{
switch (compositeMode)
{
case MarqueeCompositeMode.New:
{
drawingSession.Clear(Windows.UI.Colors.Transparent);
Rect rect = transformerRect.ToRect();
drawingSession.FillRectangle(rect, Windows.UI.Colors.DodgerBlue);
}
break;
case MarqueeCompositeMode.Add:
{
Rect rect = transformerRect.ToRect();
drawingSession.FillRectangle(rect, Windows.UI.Colors.DodgerBlue);
}
break;
case MarqueeCompositeMode.Subtract:
{
CanvasCommandList canvasCommandList = CanvasDrawingSessionExtensions.GetMarqueeToolRectangular(drawingSession, resourceCreator, transformerRect);
CanvasComposite canvasComposite = CanvasComposite.DestinationOut;
drawingSession.DrawImage(canvasCommandList, 0, 0, sourceRectangle, 1, CanvasImageInterpolation.Linear, canvasComposite);
}
break;
case MarqueeCompositeMode.Intersect:
{
CanvasCommandList canvasCommandList = CanvasDrawingSessionExtensions.GetMarqueeToolRectangular(drawingSession, resourceCreator, transformerRect);
CanvasComposite canvasComposite = CanvasComposite.DestinationIn;
drawingSession.DrawImage(canvasCommandList, 0, 0, sourceRectangle, 1, CanvasImageInterpolation.Linear, canvasComposite);
}
break;
case MarqueeCompositeMode.Xor:
{
CanvasCommandList canvasCommandList = CanvasDrawingSessionExtensions.GetMarqueeToolRectangular(drawingSession, resourceCreator, transformerRect);
CanvasComposite canvasComposite = CanvasComposite.Xor;
drawingSession.DrawImage(canvasCommandList, 0, 0, sourceRectangle, 1, CanvasImageInterpolation.Linear, canvasComposite);
}
break;
}
}
private static void DrawMarqueeToolEllipse(this CanvasDrawingSession drawingSession, ICanvasResourceCreator resourceCreator, TransformerRect transformerRect, Rect sourceRectangle, MarqueeCompositeMode compositeMode = MarqueeCompositeMode.New)
{
switch (compositeMode)
{
case MarqueeCompositeMode.New:
{
drawingSession.Clear(Windows.UI.Colors.Transparent);
Vector2 centerPoint = transformerRect.Center;
float width = transformerRect.Width / 2;
float height = transformerRect.Height / 2;
drawingSession.FillEllipse(centerPoint, width, height, Windows.UI.Colors.DodgerBlue);
}
break;
case MarqueeCompositeMode.Add:
{
Vector2 centerPoint = transformerRect.Center;
float width = transformerRect.Width / 2;
float height = transformerRect.Height / 2;
drawingSession.FillEllipse(centerPoint, width, height, Windows.UI.Colors.DodgerBlue);
}
break;
case MarqueeCompositeMode.Subtract:
{
CanvasCommandList canvasCommandList = CanvasDrawingSessionExtensions.GetMarqueeToolEllipse(drawingSession, resourceCreator, transformerRect);
CanvasComposite canvasComposite = CanvasComposite.DestinationOut;
drawingSession.DrawImage(canvasCommandList, 0, 0, sourceRectangle, 1, CanvasImageInterpolation.Linear, canvasComposite);
}
break;
case MarqueeCompositeMode.Intersect:
{
CanvasCommandList canvasCommandList = CanvasDrawingSessionExtensions.GetMarqueeToolEllipse(drawingSession, resourceCreator, transformerRect);
CanvasComposite canvasComposite = CanvasComposite.DestinationIn;
drawingSession.DrawImage(canvasCommandList, 0, 0, sourceRectangle, 1, CanvasImageInterpolation.Linear, canvasComposite);
}
break;
case MarqueeCompositeMode.Xor:
{
CanvasCommandList canvasCommandList = CanvasDrawingSessionExtensions.GetMarqueeToolEllipse(drawingSession, resourceCreator, transformerRect);
CanvasComposite canvasComposite = CanvasComposite.Xor;
drawingSession.DrawImage(canvasCommandList, 0, 0, sourceRectangle, 1, CanvasImageInterpolation.Linear, canvasComposite);
}
break;
}
}
/// <summary>
/// Fill a marquee mask with a marquee-tool.
/// </summary>
/// <param name="drawingSession"> The drawing-session. </param>
/// <param name="resourceCreator"> The resource-creator. </param>
/// <param name="toolType"> The marquee-tool type. </param>
/// <param name="marqueeTool"> The marquee-tool. </param>
/// <param name="sourceRectangle"> The source rectangle. </param>
/// <param name="compositeMode"> The composite mode. </param>
public static void FillMarqueeMaskl(this CanvasDrawingSession drawingSession, ICanvasResourceCreator resourceCreator, MarqueeToolType toolType, MarqueeTool marqueeTool, Rect sourceRectangle, MarqueeCompositeMode compositeMode)
{
switch (toolType)
{
case MarqueeToolType.Rectangular:
drawingSession.DrawMarqueeToolRectangular(resourceCreator, marqueeTool.TransformerRect, sourceRectangle, compositeMode);
break;
case MarqueeToolType.Elliptical:
drawingSession.DrawMarqueeToolEllipse(resourceCreator, marqueeTool.TransformerRect, sourceRectangle, compositeMode);
break;
case MarqueeToolType.Polygonal:
case MarqueeToolType.FreeHand:
Vector2[] points = marqueeTool.Points.ToArray();
CanvasGeometry canvasGeometry = CanvasGeometry.CreatePolygon(resourceCreator, marqueeTool.Points.ToArray());
drawingSession.DrawMarqueeToolGeometry(resourceCreator, canvasGeometry, sourceRectangle, compositeMode);
break;
}
}
