133 lines
5.1 KiB
C#
133 lines
5.1 KiB
C#
#region PDFsharp - A .NET library for processing PDF
|
||
//
|
||
// Authors:
|
||
// Stefan Lange
|
||
//
|
||
// Copyright (c) 2005-2017 empira Software GmbH, Cologne Area (Germany)
|
||
//
|
||
// http://www.pdfsharp.com
|
||
// http://sourceforge.net/projects/pdfsharp
|
||
//
|
||
// Permission is hereby granted, free of charge, to any person obtaining a
|
||
// copy of this software and associated documentation files (the "Software"),
|
||
// to deal in the Software without restriction, including without limitation
|
||
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
||
// and/or sell copies of the Software, and to permit persons to whom the
|
||
// Software is furnished to do so, subject to the following conditions:
|
||
//
|
||
// The above copyright notice and this permission notice shall be included
|
||
// in all copies or substantial portions of the Software.
|
||
//
|
||
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
||
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
||
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
||
// DEALINGS IN THE SOFTWARE.
|
||
#endregion
|
||
|
||
using System;
|
||
#if GDI
|
||
using System.Drawing;
|
||
using System.Drawing.Imaging;
|
||
#endif
|
||
#if WPF
|
||
using System.Windows.Media;
|
||
#endif
|
||
using PdfSharp.Drawing;
|
||
using PdfSharp.Drawing.Pdf;
|
||
|
||
namespace PdfSharp.Pdf.Advanced
|
||
{
|
||
/// <summary>
|
||
/// Represents a shading pattern dictionary.
|
||
/// </summary>
|
||
public sealed class PdfShadingPattern : PdfDictionaryWithContentStream
|
||
{
|
||
/// <summary>
|
||
/// Initializes a new instance of the <see cref="PdfShadingPattern"/> class.
|
||
/// </summary>
|
||
public PdfShadingPattern(PdfDocument document)
|
||
: base(document)
|
||
{
|
||
Elements.SetName(Keys.Type, "/Pattern");
|
||
Elements[Keys.PatternType] = new PdfInteger(2);
|
||
}
|
||
|
||
/// <summary>
|
||
/// Setups the shading pattern from the specified brush.
|
||
/// </summary>
|
||
internal void SetupFromBrush(XLinearGradientBrush brush, XMatrix matrix, XGraphicsPdfRenderer renderer)
|
||
{
|
||
if (brush == null)
|
||
throw new ArgumentNullException("brush");
|
||
|
||
PdfShading shading = new PdfShading(_document);
|
||
shading.SetupFromBrush(brush, renderer);
|
||
Elements[Keys.Shading] = shading;
|
||
//Elements[Keys.Matrix] = new PdfLiteral("[" + PdfEncoders.ToString(matrix) + "]");
|
||
Elements.SetMatrix(Keys.Matrix, matrix);
|
||
}
|
||
|
||
/// <summary>
|
||
/// Common keys for all streams.
|
||
/// </summary>
|
||
internal sealed new class Keys : PdfDictionaryWithContentStream.Keys
|
||
{
|
||
/// <summary>
|
||
/// (Optional) The type of PDF object that this dictionary describes; if present,
|
||
/// must be Pattern for a pattern dictionary.
|
||
/// </summary>
|
||
[KeyInfo(KeyType.Name | KeyType.Required)]
|
||
public const string Type = "/Type";
|
||
|
||
/// <summary>
|
||
/// (Required) A code identifying the type of pattern that this dictionary describes;
|
||
/// must be 2 for a shading pattern.
|
||
/// </summary>
|
||
[KeyInfo(KeyType.Integer | KeyType.Required)]
|
||
public const string PatternType = "/PatternType";
|
||
|
||
/// <summary>
|
||
/// (Required) A shading object (see below) defining the shading pattern<72>s gradient fill.
|
||
/// </summary>
|
||
[KeyInfo(KeyType.Dictionary | KeyType.Required)]
|
||
public const string Shading = "/Shading";
|
||
|
||
/// <summary>
|
||
/// (Optional) An array of six numbers specifying the pattern matrix.
|
||
/// Default value: the identity matrix [1 0 0 1 0 0].
|
||
/// </summary>
|
||
[KeyInfo(KeyType.Array | KeyType.Optional)]
|
||
public const string Matrix = "/Matrix";
|
||
|
||
/// <summary>
|
||
/// (Optional) A graphics state parameter dictionary containing graphics state parameters
|
||
/// to be put into effect temporarily while the shading pattern is painted. Any parameters
|
||
/// that are not so specified are inherited from the graphics state that was in effect
|
||
/// at the beginning of the content stream in which the pattern is defined as a resource.
|
||
/// </summary>
|
||
[KeyInfo(KeyType.Dictionary | KeyType.Optional)]
|
||
public const string ExtGState = "/ExtGState";
|
||
|
||
/// <summary>
|
||
/// Gets the KeysMeta for these keys.
|
||
/// </summary>
|
||
internal static DictionaryMeta Meta
|
||
{
|
||
get { return _meta ?? (_meta = CreateMeta(typeof(Keys))); }
|
||
}
|
||
static DictionaryMeta _meta;
|
||
}
|
||
|
||
/// <summary>
|
||
/// Gets the KeysMeta of this dictionary type.
|
||
/// </summary>
|
||
internal override DictionaryMeta Meta
|
||
{
|
||
get { return Keys.Meta; }
|
||
}
|
||
}
|
||
}
|