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ScalingGrid.cs
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ScalingGrid.cs
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using System;
using com.flagstone.transform.coder;
using com.flagstone.transform.datatype;
using com.flagstone.transform.exception;
/*
* ScalingGrid.java
* Transform
*
* Copyright (c) 2001-2010 Flagstone Software Ltd. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Flagstone Software Ltd. nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
namespace com.flagstone.transform
{
/// <summary>
/// ScalingGrid is used to define a 9-slice grid that can be used to control
/// the way an object is scaled. The Bounds defines the central square of the
/// grid. The (two) squares above and below the Bounds are scaled horizontally;
/// the (two) squares to the left and right are scaled vertically and the (four)
/// corner squares are not scaled at all.
/// </summary>
public sealed class ScalingGrid : DefineTag
{
/// <summary>
/// Format string used in toString() method. </summary>
private const string FORMAT = "ScalingGrid: { identifier=%d;" + " bounds=%s}";
/// <summary>
/// the unique identifier of the object. </summary>
private int identifier;
/// <summary>
/// The box that defines the centre of the grid. </summary>
private Bounds bounds;
/// <summary>
/// The length of the object, minus the header, when it is encoded. </summary>
private int length;
/// <summary>
/// Creates and initialises a ScalingGrid object using values encoded
/// in the Flash binary format.
/// </summary>
/// <param name="coder">
/// an SWFDecoder object that contains the encoded Flash data.
/// </param>
/// <exception cref="IOException">
/// if an error occurs while decoding the data. </exception>
public ScalingGrid(SWFDecoder coder)
{
length = coder.readUnsignedShort() & Coder.LENGTH_FIELD;
if (length == Coder.IS_EXTENDED)
{
length = coder.readInt();
}
identifier = coder.readUnsignedShort();
bounds = new Bounds(coder);
}
/// <summary>
/// Creates and initialises a ScalingGrid with the specified object
/// identifier and bounding box for the centre section.
/// </summary>
/// <param name="uid">
/// the unique identifier of the object to which the grid will be
/// applied </param>
/// <param name="rect">
/// the bounding box that defines the coordinates of the centre
/// section of the grid. </param>
public ScalingGrid(int uid, Bounds rect)
{
Identifier = uid;
Bounds = rect;
}
/// <summary>
/// Creates and initialises a ScalingGrid object using the values copied
/// from another ScalingGrid object.
/// </summary>
/// <param name="object">
/// a ScalingGrid object from which the values will be
/// copied. </param>
public ScalingGrid(ScalingGrid @object)
{
identifier = @object.identifier;
bounds = @object.bounds;
}
/// <summary>
/// Get the identifier of the object which the scaling grid will be applied
/// to.
/// </summary>
/// <returns> the object identifier. </returns>
public int Identifier
{
get => identifier;
set
{
if ((value < 1) || (value > Coder.USHORT_MAX))
{
throw new IllegalArgumentRangeException(1, Coder.USHORT_MAX, value);
}
identifier = value;
}
}
/// <summary>
/// Get the bounding box that defined the centre section of the scaling grid. </summary>
/// <returns> the box defining the centre of the grid. </returns>
public Bounds Bounds
{
get => bounds;
set
{
if (value == null)
{
throw new ArgumentException();
}
bounds = value;
}
}
/// <summary>
/// {@inheritDoc} </summary>
public ScalingGrid copy()
{
return new ScalingGrid(this);
}
/// <summary>
/// {@inheritDoc} </summary>
public override string ToString()
{
return ObjectExtensions.FormatJava(FORMAT, identifier, bounds.ToString());
}
/// <summary>
/// {@inheritDoc} </summary>
public int prepareToEncode(Context context)
{
length = 2 + bounds.prepareToEncode(context);
return 2 + length;
}
/// <summary>
/// {@inheritDoc} </summary>
public void encode(SWFEncoder coder, Context context)
{
coder.writeShort((MovieTypes.DEFINE_SCALING_GRID << Coder.LENGTH_FIELD_SIZE) | length);
coder.writeShort(identifier);
bounds.encode(coder, context);
}
}
}