377 lines
12 KiB
C#
377 lines
12 KiB
C#
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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) 2005-2017 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 System.Runtime.InteropServices;
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#if GDI
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using System.Drawing;
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#endif
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#if WPF
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using System.Windows;
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using SysPoint = System.Windows.Point;
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using SysSize = System.Windows.Size;
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#endif
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#if NETFX_CORE
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using Windows.UI.Xaml.Media;
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using SysPoint = Windows.Foundation.Point;
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using SysSize = Windows.Foundation.Size;
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#endif
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#if !EDF_CORE
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using PdfSharp.Internal;
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#else
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using PdfSharp.Internal;
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#endif
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namespace PdfSharp.Drawing
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{
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/// <summary>
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/// Represents a pair of floating-point numbers, typically the width and height of a
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/// graphical object.
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/// </summary>
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[DebuggerDisplay("{DebuggerDisplay}")]
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[Serializable, StructLayout(LayoutKind.Sequential)] //, ValueSerializer(typeof(SizeValueSerializer)), TypeConverter(typeof(SizeConverter))]
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public struct XSize : IFormattable
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{
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/// <summary>
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/// Initializes a new instance of the XPoint class with the specified values.
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/// </summary>
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public XSize(double width, double height)
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{
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if (width < 0 || height < 0)
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throw new ArgumentException("WidthAndHeightCannotBeNegative"); //SR.Get(SRID.Size_WidthAndHeightCannotBeNegative, new object[0]));
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_width = width;
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_height = height;
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}
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/// <summary>
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/// Determines whether two size objects are equal.
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/// </summary>
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public static bool operator ==(XSize size1, XSize size2)
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{
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// ReSharper disable CompareOfFloatsByEqualityOperator
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return size1.Width == size2.Width && size1.Height == size2.Height;
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// ReSharper restore CompareOfFloatsByEqualityOperator
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}
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/// <summary>
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/// Determines whether two size objects are not equal.
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/// </summary>
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public static bool operator !=(XSize size1, XSize size2)
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{
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return !(size1 == size2);
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}
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/// <summary>
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/// Indicates whether this two instance are equal.
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/// </summary>
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public static bool Equals(XSize size1, XSize size2)
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{
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if (size1.IsEmpty)
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return size2.IsEmpty;
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return size1.Width.Equals(size2.Width) && size1.Height.Equals(size2.Height);
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}
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/// <summary>
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/// Indicates whether this instance and a specified object are equal.
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/// </summary>
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public override bool Equals(object o)
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{
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if (!(o is XSize))
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return false;
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return Equals(this, (XSize)o);
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}
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/// <summary>
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/// Indicates whether this instance and a specified size are equal.
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/// </summary>
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public bool Equals(XSize value)
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{
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return Equals(this, value);
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}
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/// <summary>
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/// Returns the hash code for this instance.
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/// </summary>
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public override int GetHashCode()
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{
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if (IsEmpty)
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return 0;
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return Width.GetHashCode() ^ Height.GetHashCode();
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}
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/// <summary>
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/// Parses the size from a string.
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/// </summary>
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public static XSize Parse(string source)
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{
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XSize empty;
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CultureInfo cultureInfo = CultureInfo.InvariantCulture;
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TokenizerHelper helper = new TokenizerHelper(source, cultureInfo);
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string str = helper.NextTokenRequired();
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if (str == "Empty")
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empty = Empty;
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else
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empty = new XSize(Convert.ToDouble(str, cultureInfo), Convert.ToDouble(helper.NextTokenRequired(), cultureInfo));
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helper.LastTokenRequired();
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return empty;
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}
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#if GDI
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/// <summary>
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/// Converts this XSize to a PointF.
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/// </summary>
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public PointF ToPointF()
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{
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return new PointF((float)_width, (float)_height);
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}
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#endif
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/// <summary>
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/// Converts this XSize to an XPoint.
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/// </summary>
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public XPoint ToXPoint()
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{
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return new XPoint(_width, _height);
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}
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/// <summary>
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/// Converts this XSize to an XVector.
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/// </summary>
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public XVector ToXVector()
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{
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return new XVector(_width, _height);
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}
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#if GDI
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/// <summary>
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/// Converts this XSize to a SizeF.
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/// </summary>
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public SizeF ToSizeF()
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{
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return new SizeF((float)_width, (float)_height);
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}
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#endif
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#if WPF || NETFX_CORE
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/// <summary>
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/// Converts this XSize to a System.Windows.Size.
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/// </summary>
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public SysSize ToSize()
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{
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return new SysSize(_width, _height);
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}
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#endif
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#if GDI
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/// <summary>
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/// Creates an XSize from a System.Drawing.Size.
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/// </summary>
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public static XSize FromSize(System.Drawing.Size size)
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{
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return new XSize(size.Width, size.Height);
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}
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/// <summary>
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/// Implicit conversion from XSize to System.Drawing.Size. The conversion must be implicit because the
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/// WinForms designer uses it.
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/// </summary>
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public static implicit operator XSize(System.Drawing.Size size)
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{
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return new XSize(size.Width, size.Height);
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}
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#endif
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#if WPF || NETFX_CORE
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/// <summary>
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/// Creates an XSize from a System.Drawing.Size.
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/// </summary>
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public static XSize FromSize(SysSize size)
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{
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return new XSize(size.Width, size.Height);
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}
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#endif
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#if GDI
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/// <summary>
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/// Creates an XSize from a System.Drawing.Size.
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/// </summary>
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public static XSize FromSizeF(SizeF size)
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{
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return new XSize(size.Width, size.Height);
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}
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#endif
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/// <summary>
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/// Converts this XSize to a human readable string.
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/// </summary>
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public override string ToString()
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{
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return ConvertToString(null, null);
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}
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/// <summary>
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/// Converts this XSize to a human readable string.
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/// </summary>
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public string ToString(IFormatProvider provider)
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{
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return ConvertToString(null, provider);
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}
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/// <summary>
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/// Converts this XSize to a human readable string.
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/// </summary>
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string IFormattable.ToString(string format, IFormatProvider provider)
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{
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return ConvertToString(format, provider);
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}
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internal string ConvertToString(string format, IFormatProvider provider)
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{
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if (IsEmpty)
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return "Empty";
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char numericListSeparator = TokenizerHelper.GetNumericListSeparator(provider);
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provider = provider ?? CultureInfo.InvariantCulture;
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// ReSharper disable FormatStringProblem
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return string.Format(provider, "{1:" + format + "}{0}{2:" + format + "}", new object[] { numericListSeparator, _width, _height });
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// ReSharper restore FormatStringProblem
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}
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/// <summary>
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/// Returns an empty size, i.e. a size with a width or height less than 0.
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/// </summary>
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public static XSize Empty
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{
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get { return s_empty; }
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}
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static readonly XSize s_empty;
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/// <summary>
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/// Gets a value indicating whether this instance is empty.
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/// </summary>
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public bool IsEmpty
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{
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get { return _width < 0; }
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}
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/// <summary>
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/// Gets or sets the width.
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/// </summary>
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public double Width
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{
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get { return _width; }
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set
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{
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if (IsEmpty)
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throw new InvalidOperationException("CannotModifyEmptySize"); //SR.Get(SRID.Size_CannotModifyEmptySize, new object[0]));
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if (value < 0)
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throw new ArgumentException("WidthCannotBeNegative"); //SR.Get(SRID.Size_WidthCannotBeNegative, new object[0]));
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_width = value;
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}
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}
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double _width;
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/// <summary>
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/// Gets or sets the height.
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/// </summary>
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public double Height
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{
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get { return _height; }
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set
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{
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if (IsEmpty)
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throw new InvalidOperationException("CannotModifyEmptySize"); // SR.Get(SRID.Size_CannotModifyEmptySize, new object[0]));
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if (value < 0)
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throw new ArgumentException("HeightCannotBeNegative"); //SR.Get(SRID.Size_HeightCannotBeNegative, new object[0]));
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_height = value;
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}
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}
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double _height;
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/// <summary>
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/// Performs an explicit conversion from XSize to XVector.
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/// </summary>
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public static explicit operator XVector(XSize size)
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{
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return new XVector(size._width, size._height);
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}
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/// <summary>
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/// Performs an explicit conversion from XSize to XPoint.
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/// </summary>
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public static explicit operator XPoint(XSize size)
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{
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return new XPoint(size._width, size._height);
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}
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#if WPF || NETFX_CORE
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/// <summary>
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/// Performs an explicit conversion from Size to XSize.
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/// </summary>
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public static explicit operator XSize(SysSize size)
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{
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return new XSize(size.Width, size.Height);
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}
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#endif
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private static XSize CreateEmptySize()
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{
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XSize size = new XSize();
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size._width = double.NegativeInfinity;
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size._height = double.NegativeInfinity;
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return size;
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}
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static XSize()
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{
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s_empty = CreateEmptySize();
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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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/// <value>The debugger display.</value>
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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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"size=({2}{0:" + format + "}, {1:" + format + "})",
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_width, _height, IsEmpty ? "Empty " : "");
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}
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}
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}
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}
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