/// <summary>
/// Causes a portion of the layer surface to be invalidated.
/// </summary>
/// <param name="roi">The region of interest to be invalidated.</param>
public void Invalidate(GeometryRegion roi)
{
foreach (Rectangle rect in roi.GetRegionScansReadOnlyInt())
{
Invalidate(rect);
}
}
public void Invert(GeometryRegion region)
{
foreach (Rectangle rect in region.GetRegionScansReadOnlyInt())
{
Invert(rect);
}
}
public void UnsafeSet(GeometryRegion region, bool newValue)
{
foreach (Rectangle rect in region.GetRegionScansReadOnlyInt())
{
UnsafeSet(rect, newValue);
}
}
/// <summary>
/// Causes the layer to render a given region of interest (roi) to the given destination surface.
/// </summary>
/// <param name="args">Contains information about which objects to use for rendering</param>
/// <param name="roi">The region to be rendered.</param>
public void Render(RenderArgs args, GeometryRegion roi)
{
Rectangle roiBounds = roi.GetBoundsInt();
if (!IsInBounds(roiBounds))
{
throw new ArgumentOutOfRangeException("roi");
}
Rectangle[] rects = roi.GetRegionScansReadOnlyInt();
RenderImpl(args, rects);
}
protected override void OnPaint(PaintEventArgs e)
{
if (this._surface != null)
{
GeometryRegion clipRegion = null;
Rectangle[] rects = this._realUpdateRects;
if (rects == null)
{
clipRegion = new GeometryRegion(e.Graphics.Clip, true);
clipRegion.Intersect(e.ClipRectangle);
rects = clipRegion.GetRegionScansReadOnlyInt();
}
if (this._justPaintWhite > 0)
{
PtnGraphics.FillRectangles(e.Graphics, Color.White, rects);
}
else
{
foreach (Rectangle rect in rects)
{
if (e.Graphics.IsVisible(rect))
{
var drawArg = new DrawArgs(e.Graphics, rect);
Draw(drawArg);
}
}
}
if (clipRegion != null)
{
clipRegion.Dispose();
}
}
if (this._justPaintWhite > 0)
{
--this._justPaintWhite;
}
base.OnPaint(e);
}
public void Apply(Surface surface, GeometryRegion roi)
{
Apply(surface, roi.GetRegionScansReadOnlyInt());
}
/// <summary>
/// Allows you to find the bounding box for a Region object without requiring
/// the presence of a Graphics object.
/// (Region.GetBounds takes a Graphics instance as its only parameter.)
/// </summary>
/// <param name="region">The region you want to find a bounding box for.</param>
/// <returns>A RectangleF structure that surrounds the Region.</returns>
public static Rectangle GetRegionBounds(GeometryRegion region)
{
Rectangle[] rects = region.GetRegionScansReadOnlyInt();
return(GetRegionBounds(rects, 0, rects.Length));
}