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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System.Windows.Media;
using System.Windows.Shapes;
using System.Windows.Controls;
/*++
Description:
Abstract class that provides a common base class for all non-container semantic elements.
These elements have a fixed node and start and end symbol indices associated with them.
--*/
namespace System.Windows.Documents
{
internal abstract class FixedSOMElement : FixedSOMSemanticBox
{
//--------------------------------------------------------------------
//
// Constructors
//
//---------------------------------------------------------------------
#region Constructors
protected FixedSOMElement(FixedNode fixedNode, int startIndex, int endIndex, GeneralTransform transform)
{
_fixedNode = fixedNode;
_startIndex = startIndex;
_endIndex = endIndex;
Transform trans = transform.AffineTransform;
if (trans != null)
{
_mat = trans.Value;
}
else
{
_mat = Transform.Identity.Value;
}
}
protected FixedSOMElement(FixedNode fixedNode, GeneralTransform transform)
{
_fixedNode = fixedNode;
Transform trans = transform.AffineTransform;
if (trans != null)
{
_mat = trans.Value;
}
else
{
_mat = Transform.Identity.Value;
}
}
#endregion Constructors
//--------------------------------------------------------------------
//
// Public Properties
//
//---------------------------------------------------------------------
#region Static methods
public static FixedSOMElement CreateFixedSOMElement(FixedPage page, UIElement uiElement, FixedNode fixedNode, int startIndex, int endIndex)
{
FixedSOMElement element = null;
if (uiElement is Glyphs)
{
Glyphs glyphs = uiElement as Glyphs;
if (glyphs.UnicodeString.Length > 0)
{
GlyphRun glyphRun = glyphs.ToGlyphRun();
Rect alignmentBox = glyphRun.ComputeAlignmentBox();
alignmentBox.Offset(glyphs.OriginX, glyphs.OriginY);
GeneralTransform transform = glyphs.TransformToAncestor(page);
if (startIndex < 0)
{
startIndex = 0;
}
if (endIndex < 0)
{
endIndex = glyphRun.Characters == null ? 0 : glyphRun.Characters.Count;
}
element = FixedSOMTextRun.Create(alignmentBox, transform, glyphs, fixedNode, startIndex, endIndex, false);
}
}
else if (uiElement is Image)
{
element = FixedSOMImage.Create(page, uiElement as Image, fixedNode);
}
else if (uiElement is Path)
{
element = FixedSOMImage.Create(page, uiElement as Path, fixedNode);
}
return element;
}
#endregion Static methods
//--------------------------------------------------------------------
//
// Public Properties
//
//---------------------------------------------------------------------
#region Public Properties
public FixedNode FixedNode
{
get
{
return _fixedNode;
}
}
public int StartIndex
{
get
{
return _startIndex;
}
}
public int EndIndex
{
get
{
return _endIndex;
}
}
#endregion Public Properties
//--------------------------------------------------------------------
//
// Internal Properties
//
//---------------------------------------------------------------------
#region Internal Properties
internal FlowNode FlowNode
{
get
{
return _flowNode;
}
set
{
_flowNode = value;
}
}
internal int OffsetInFlowNode
{
get
{
return _offsetInFlowNode;
}
set
{
_offsetInFlowNode = value;
}
}
internal Matrix Matrix
{
get
{
return _mat;
}
}
#endregion Internal Properties
//--------------------------------------------------------------------
//
// Protected Fields
//
//---------------------------------------------------------------------
#region Protected Fields
protected FixedNode _fixedNode ;
protected int _startIndex;
protected int _endIndex;
protected Matrix _mat;
#endregion Protected Fields
#region Private Fields
private FlowNode _flowNode;
private int _offsetInFlowNode;
#endregion Private Fields
}
}
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