vendor: import KillerPDF 1.7.5 source (GPL-3.0) as the base for MMD PDF
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#region PDFsharp - A .NET library for processing PDF
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//
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// Authors:
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// Stefan Lange
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//
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// Copyright (c) 2005-2016 empira Software GmbH, Cologne Area (Germany)
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//
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// http://www.PdfSharp.com
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// http://sourceforge.net/projects/pdfsharp
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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#endregion
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using System;
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using System.Diagnostics;
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using System.Globalization;
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using PdfSharpCore.Drawing;
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using PdfSharpCore.Pdf.Advanced;
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using PdfSharpCore.Pdf.IO;
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using PdfSharpCore.Pdf.Internal;
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namespace PdfSharpCore.Pdf
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{
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/// <summary>
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/// Represents a PDF rectangle value, that is internally an array with 4 real values.
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/// </summary>
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[DebuggerDisplay("{DebuggerDisplay}")]
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public sealed class PdfRectangle : PdfItem
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{
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// This class must behave like a value type. Therefore it cannot be changed (like System.String).
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/// <summary>
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/// Initializes a new instance of the PdfRectangle class.
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/// </summary>
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public PdfRectangle()
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{ }
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/// <summary>
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/// Initializes a new instance of the PdfRectangle class with two points specifying
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/// two diagonally opposite corners. Notice that in contrast to GDI+ convention the
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/// 3rd and the 4th parameter specify a point and not a width. This is so much confusing
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/// that this function is for internal use only.
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/// </summary>
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internal PdfRectangle(double x1, double y1, double x2, double y2)
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{
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_x1 = x1;
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_y1 = y1;
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_x2 = x2;
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_y2 = y2;
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}
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/// <summary>
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/// Initializes a new instance of the PdfRectangle class with two points specifying
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/// two diagonally opposite corners.
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/// </summary>
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public PdfRectangle(XPoint pt1, XPoint pt2)
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{
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_x1 = pt1.X;
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_y1 = pt1.Y;
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_x2 = pt2.X;
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_y2 = pt2.Y;
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}
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/// <summary>
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/// Initializes a new instance of the PdfRectangle class with the specified location and size.
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/// </summary>
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public PdfRectangle(XPoint pt, XSize size)
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{
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_x1 = pt.X;
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_y1 = pt.Y;
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_x2 = pt.X + size.Width;
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_y2 = pt.Y + size.Height;
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}
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/// <summary>
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/// Initializes a new instance of the PdfRectangle class with the specified XRect.
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/// </summary>
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public PdfRectangle(XRect rect)
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{
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_x1 = rect.X;
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_y1 = rect.Y;
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_x2 = rect.X + rect.Width;
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_y2 = rect.Y + rect.Height;
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}
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/// <summary>
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/// Initializes a new instance of the PdfRectangle class with the specified PdfArray.
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/// </summary>
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internal PdfRectangle(PdfItem item)
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{
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if (item == null || item is PdfNull)
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return;
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if (item is PdfReference)
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item = ((PdfReference)item).Value;
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PdfArray array = item as PdfArray;
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if (array == null)
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throw new InvalidOperationException(PSSR.UnexpectedTokenInPdfFile);
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_x1 = array.Elements.GetReal(0);
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_y1 = array.Elements.GetReal(1);
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_x2 = array.Elements.GetReal(2);
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_y2 = array.Elements.GetReal(3);
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}
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/// <summary>
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/// Clones this instance.
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/// </summary>
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public new PdfRectangle Clone()
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{
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return (PdfRectangle)Copy();
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}
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/// <summary>
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/// Implements cloning this instance.
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/// </summary>
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protected override object Copy()
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{
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PdfRectangle rect = (PdfRectangle)base.Copy();
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return rect;
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}
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/// <summary>
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/// Tests whether all coordinate are zero.
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/// </summary>
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public bool IsEmpty
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{
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// ReSharper disable CompareOfFloatsByEqualityOperator
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get { return _x1 == 0 && _y1 == 0 && _x2 == 0 && _y2 == 0; }
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// ReSharper restore CompareOfFloatsByEqualityOperator
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}
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/// <summary>
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/// Tests whether the specified object is a PdfRectangle and has equal coordinates.
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/// </summary>
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public override bool Equals(object obj)
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{
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// ReSharper disable CompareOfFloatsByEqualityOperator
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PdfRectangle rectangle = obj as PdfRectangle;
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if (rectangle != null)
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{
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PdfRectangle rect = rectangle;
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return rect._x1 == _x1 && rect._y1 == _y1 && rect._x2 == _x2 && rect._y2 == _y2;
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}
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return false;
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// ReSharper restore CompareOfFloatsByEqualityOperator
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}
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/// <summary>
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/// Serves as a hash function for a particular type.
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/// </summary>
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public override int GetHashCode()
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{
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// This code is from System.Drawing...
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return (int)(((((uint)_x1) ^ ((((uint)_y1) << 13) |
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(((uint)_y1) >> 0x13))) ^ ((((uint)_x2) << 0x1a) |
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(((uint)_x2) >> 6))) ^ ((((uint)_y2) << 7) |
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(((uint)_y2) >> 0x19)));
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}
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/// <summary>
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/// Tests whether two structures have equal coordinates.
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/// </summary>
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public static bool operator ==(PdfRectangle left, PdfRectangle right)
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{
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// ReSharper disable CompareOfFloatsByEqualityOperator
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// use: if (Object.ReferenceEquals(left, null))
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if ((object)left != null)
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{
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if ((object)right != null)
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return left._x1 == right._x1 && left._y1 == right._y1 && left._x2 == right._x2 && left._y2 == right._y2;
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return false;
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}
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return (object)right == null;
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// ReSharper restore CompareOfFloatsByEqualityOperator
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}
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/// <summary>
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/// Tests whether two structures differ in one or more coordinates.
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/// </summary>
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public static bool operator !=(PdfRectangle left, PdfRectangle right)
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{
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return !(left == right);
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}
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/// <summary>
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/// Gets or sets the x-coordinate of the first corner of this PdfRectangle.
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/// </summary>
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public double X1
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{
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get { return _x1; }
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}
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readonly double _x1;
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/// <summary>
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/// Gets or sets the y-coordinate of the first corner of this PdfRectangle.
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/// </summary>
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public double Y1
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{
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get { return _y1; }
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}
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readonly double _y1;
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/// <summary>
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/// Gets or sets the x-coordinate of the second corner of this PdfRectangle.
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/// </summary>
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public double X2
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{
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get { return _x2; }
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}
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readonly double _x2;
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/// <summary>
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/// Gets or sets the y-coordinate of the second corner of this PdfRectangle.
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/// </summary>
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public double Y2
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{
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get { return _y2; }
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}
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readonly double _y2;
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/// <summary>
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/// Gets X2 - X1.
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/// </summary>
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public double Width
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{
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get { return _x2 - _x1; }
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}
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/// <summary>
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/// Gets Y2 - Y1.
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/// </summary>
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public double Height
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{
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get { return _y2 - _y1; }
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}
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/// <summary>
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/// Gets or sets the coordinates of the first point of this PdfRectangle.
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/// </summary>
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public XPoint Location
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{
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get { return new XPoint(_x1, _y1); }
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}
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/// <summary>
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/// Gets or sets the size of this PdfRectangle.
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/// </summary>
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public XSize Size
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{
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get { return new XSize(_x2 - _x1, _y2 - _y1); }
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}
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#if GDI
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/// <summary>
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/// Determines if the specified point is contained within this PdfRectangle.
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/// </summary>
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public bool Contains(PointF pt)
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{
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return Contains(pt.X, pt.Y);
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}
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#endif
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/// <summary>
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/// Determines if the specified point is contained within this PdfRectangle.
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/// </summary>
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public bool Contains(XPoint pt)
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{
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return Contains(pt.X, pt.Y);
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}
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/// <summary>
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/// Determines if the specified point is contained within this PdfRectangle.
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/// </summary>
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public bool Contains(double x, double y)
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{
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// Treat rectangle inclusive/inclusive.
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return _x1 <= x && x <= _x2 && _y1 <= y && y <= _y2;
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}
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/// <summary>
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/// Determines if the rectangular region represented by rect is entirely contained within this PdfRectangle.
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/// </summary>
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public bool Contains(XRect rect)
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{
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return _x1 <= rect.X && (rect.X + rect.Width) <= _x2 &&
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_y1 <= rect.Y && (rect.Y + rect.Height) <= _y2;
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}
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/// <summary>
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/// Determines if the rectangular region represented by rect is entirely contained within this PdfRectangle.
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/// </summary>
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public bool Contains(PdfRectangle rect)
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{
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return _x1 <= rect._x1 && rect._x2 <= _x2 &&
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_y1 <= rect._y1 && rect._y2 <= _y2;
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}
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/// <summary>
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/// Returns the rectangle as an XRect object.
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/// </summary>
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public XRect ToXRect()
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{
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return new XRect(_x1, _y1, Width, Height);
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}
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/// <summary>
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/// Returns the rectangle as a string in the form «[x1 y1 x2 y2]».
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/// </summary>
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public override string ToString()
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{
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const string format = Config.SignificantFigures3;
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return PdfEncoders.Format("[{0:" + format + "} {1:" + format + "} {2:" + format + "} {3:" + format + "}]", _x1, _y1, _x2, _y2);
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}
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/// <summary>
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/// Writes the rectangle.
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/// </summary>
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internal override void WriteObject(PdfWriter writer)
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{
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writer.Write(this);
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}
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/// <summary>
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/// Gets the DebuggerDisplayAttribute text.
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/// </summary>
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// ReSharper disable UnusedMember.Local
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string DebuggerDisplay
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// ReSharper restore UnusedMember.Local
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{
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get
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{
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const string format = Config.SignificantFigures10;
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return String.Format(CultureInfo.InvariantCulture,
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"X1={0:" + format + "}, X2={1:" + format + "}, Y1={2:" + format + "}, Y2={3:" + format + "}", _x1, _y1, X2, _y2);
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}
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}
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#if false // This object is considered as immutable.
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// /// <summary>
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// /// Adjusts the location of this PdfRectangle by the specified amount.
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// /// </summary>
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// public void Offset(PointF pos)
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// {
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// Offset(pos.X, pos.Y);
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// }
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//
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// /// <summary>
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// /// Adjusts the location of this PdfRectangle by the specified amount.
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// /// </summary>
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// public void Offset(double x, double y)
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// {
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// _x1 += x;
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// _y1 += y;
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// _x2 += x;
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// _y2 += y;
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// }
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//
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// /// <summary>
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// /// Inflates this PdfRectangle by the specified amount.
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// /// </summary>
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// public void Inflate(double x, double y)
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// {
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// _x1 -= x;
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// _y1 -= y;
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// _x2 += x;
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// _y2 += y;
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// }
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//
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// /// <summary>
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// /// Inflates this PdfRectangle by the specified amount.
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// /// </summary>
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// public void Inflate(SizeF size)
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// {
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// Inflate(size.Width, size.Height);
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// }
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//
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// /// <summary>
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// /// Creates and returns an inflated copy of the specified PdfRectangle.
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// /// </summary>
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// public static PdfRectangle Inflate(PdfRectangle rect, double x, double y)
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// {
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// rect.Inflate(x, y);
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// return rect;
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// }
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//
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// /// <summary>
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// /// Replaces this PdfRectangle with the intersection of itself and the specified PdfRectangle.
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// /// </summary>
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// public void Intersect(PdfRectangle rect)
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// {
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// PdfRectangle rect2 = PdfRectangle.Intersect(rect, this);
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// _x1 = rect2.x1;
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// _y1 = rect2.y1;
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// _x2 = rect2.x2;
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// _y2 = rect2.y2;
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// }
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//
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// /// <summary>
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// /// Returns a PdfRectangle that represents the intersection of two rectangles. If there is no intersection,
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// /// an empty PdfRectangle is returned.
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// /// </summary>
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// public static PdfRectangle Intersect(PdfRectangle rect1, PdfRectangle rect2)
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// {
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// double xx1 = Math.Max(rect1.x1, rect2.x1);
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// double xx2 = Math.Min(rect1.x2, rect2.x2);
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// double yy1 = Math.Max(rect1.y1, rect2.y1);
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// double yy2 = Math.Min(rect1.y2, rect2.y2);
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// if (xx2 >= xx1 && yy2 >= yy1)
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// return new PdfRectangle(xx1, yy1, xx2, yy2);
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// return PdfRectangle.Empty;
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// }
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//
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// /// <summary>
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// /// Determines if this rectangle intersects with the specified PdfRectangle.
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// /// </summary>
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// public bool IntersectsWith(PdfRectangle rect)
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// {
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// return rect.x1 < _x2 && _x1 < rect.x2 && rect.y1 < _y2 && _y1 < rect.y2;
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// }
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//
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// /// <summary>
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// /// Creates the smallest rectangle that can contain both of two specified rectangles.
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// /// </summary>
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// public static PdfRectangle Union(PdfRectangle rect1, PdfRectangle rect2)
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// {
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// return new PdfRectangle(
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// Math.Min(rect1.x1, rect2.x1), Math.Max(rect1.x2, rect2.x2),
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// Math.Min(rect1.y1, rect2.y1), Math.Max(rect1.y2, rect2.y2));
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// }
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#endif
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/// <summary>
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/// Represents an empty PdfRectangle.
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/// </summary>
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public static readonly PdfRectangle Empty = new PdfRectangle();
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}
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}
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