//---------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
// Description: Implementation of GeometryGroup
//
// History:
// 2004/11/11-Michka
// Created it
//
//---------------------------------------------------------------------------
using System;
using MS.Internal;
using System.ComponentModel;
using System.ComponentModel.Design.Serialization;
using System.Diagnostics;
using System.Reflection;
using System.Collections;
using System.Text;
using System.Globalization;
using System.Windows.Media;
using System.Windows;
using System.Windows.Media.Composition;
using System.Text.RegularExpressions;
using System.Windows.Media.Animation;
using System.Windows.Markup;
using System.Runtime.InteropServices;
using SR=MS.Internal.PresentationCore.SR;
using SRID=MS.Internal.PresentationCore.SRID;
namespace System.Windows.Media
{
#region GeometryGroup
/// <summary>
/// GeometryGroup
/// </summary>
[ContentProperty("Children")]
public sealed partial class GeometryGroup : Geometry
{
#region Constructors
/// <summary>
/// Default constructor
/// </summary>
public GeometryGroup()
{
}
#endregion
#region Overrides
/// <summary>
/// GetPathGeometryData - returns a struct which contains this Geometry represented
/// as a path geometry's serialized format.
/// </summary>
internal override PathGeometryData GetPathGeometryData()
{
PathGeometry pathGeometry = GetAsPathGeometry();
return pathGeometry.GetPathGeometryData();
}
internal override PathGeometry GetAsPathGeometry()
{
PathGeometry pg = new PathGeometry();
pg.AddGeometry(this);
pg.FillRule = FillRule;
Debug.Assert(pg.CanFreeze);
return pg;
}
#endregion
#region GetPathFigureCollection
internal override PathFigureCollection GetTransformedFigureCollection(Transform transform)
{
// Combine the transform argument with the internal transform
Transform combined = new MatrixTransform(GetCombinedMatrix(transform));
PathFigureCollection result = new PathFigureCollection();
GeometryCollection children = Children;
if (children != null)
{
for (int i = 0; i < children.Count; i++)
{
PathFigureCollection pathFigures = children.Internal_GetItem(i).GetTransformedFigureCollection(combined);
if (pathFigures != null)
{
int count = pathFigures.Count;
for (int j = 0; j < count; ++j)
{
result.Add(pathFigures[j]);
}
}
}
}
return result;
}
#endregion
#region IsEmpty
/// <summary>
/// Returns true if this geometry is empty
/// </summary>
public override bool IsEmpty()
{
GeometryCollection children = Children;
if (children == null)
{
return true;
}
for (int i=0; i<children.Count; i++)
{
if (!((Geometry)children[i]).IsEmpty())
{
return false;
}
}
return true;
}
internal override bool IsObviouslyEmpty()
{
GeometryCollection children = Children;
return (children == null) || (children.Count == 0);
}
#endregion IsEmpty
/// <summary>
/// Returns true if this geometry may have curved segments
/// </summary>
public override bool MayHaveCurves()
{
GeometryCollection children = Children;
if (children == null)
{
return false;
}
for (int i = 0; i < children.Count; i++)
{
if (((Geometry)children[i]).MayHaveCurves())
{
return true;
}
}
return false;
}
}
#endregion
}
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