public ArtboardSnapEngineContext(ArtboardSnapEngine engine, ArtboardSnapEngineContextParameters parameters)
{
Engine = engine;
Parameters = parameters;
SourceSnapPrimitives = new ReadOnlyCollection <ArtboardSnapSourcePrimitive>(Engine.GetSourcesInternal(Parameters.Element).SelectMany(snapSource => snapSource.GetSnapPrimitives(Parameters)).ToList());
TargetSnapPrimitives = new ReadOnlyCollection <ArtboardSnapTargetPrimitive>(Engine.GetTargetsInternal(Parameters.Element).SelectMany(snapTarget => snapTarget.GetSnapPrimitives(Parameters)).ToList());
DynamicTargets = new ReadOnlyCollection <ArtboardSnapTargetPrimitive>(TargetSnapPrimitives.Where(p => p.IsFixed == false).ToList());
}
public override IEnumerable <ArtboardSnapSourcePrimitive> GetSnapPrimitives(ArtboardSnapEngineContextParameters parameters)
{
var side = parameters.Side;
var hasLeft = ArtboardSnapEngineUtils.HasLeft(side);
var hasTop = ArtboardSnapEngineUtils.HasTop(side);
var hasRight = ArtboardSnapEngineUtils.HasRight(side);
var hasBottom = ArtboardSnapEngineUtils.HasBottom(side);
if (hasTop && hasLeft)
{
yield return(_topLeft);
}
if (hasTop && hasRight)
{
yield return(_topRight);
}
if (hasBottom && hasRight)
{
yield return(_bottomRight);
}
if (hasBottom && hasLeft)
{
yield return(_bottomLeft);
}
if (hasLeft)
{
yield return(_left);
}
if (hasTop)
{
yield return(_top);
}
if (hasRight)
{
yield return(_right);
}
if (hasBottom)
{
yield return(_bottom);
}
}
public override IEnumerable <ArtboardSnapTargetPrimitive> GetSnapPrimitives(ArtboardSnapEngineContextParameters parameters)
{
return(_snapPrimitives);
}
public abstract IEnumerable <ArtboardSnapSourcePrimitive> GetSnapPrimitives(ArtboardSnapEngineContextParameters parameters);