404 lines
13 KiB
C#
404 lines
13 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 PdfSharp.Internal;
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#if GDI
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using System.Drawing;
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using System.Drawing.Drawing2D;
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using GdiPen = System.Drawing.Pen;
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#endif
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#if WPF
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using System.Windows;
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using System.Windows.Media;
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using WpfPen =System.Windows.Media.Pen;
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using WpfBrush =System.Windows.Media.Brush;
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#endif
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#if UWP
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#endif
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namespace PdfSharp.Drawing
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{
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// TODO Free GDI objects (pens, brushes, ...) automatically without IDisposable.
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/// <summary>
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/// Defines an object used to draw lines and curves.
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/// </summary>
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public sealed class XPen
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{
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/// <summary>
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/// Initializes a new instance of the <see cref="XPen"/> class.
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/// </summary>
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public XPen(XColor color)
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: this(color, 1, false)
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{ }
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/// <summary>
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/// Initializes a new instance of the <see cref="XPen"/> class.
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/// </summary>
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public XPen(XColor color, double width)
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: this(color, width, false)
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{ }
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internal XPen(XColor color, double width, bool immutable)
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{
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_color = color;
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_width = width;
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_lineJoin = XLineJoin.Miter;
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_lineCap = XLineCap.Flat;
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_dashStyle = XDashStyle.Solid;
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_dashOffset = 0f;
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_immutable = immutable;
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="XPen"/> class.
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/// </summary>
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public XPen(XPen pen)
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{
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_color = pen._color;
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_width = pen._width;
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_lineJoin = pen._lineJoin;
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_lineCap = pen._lineCap;
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_dashStyle = pen._dashStyle;
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_dashOffset = pen._dashOffset;
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_dashPattern = pen._dashPattern;
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if (_dashPattern != null)
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_dashPattern = (double[])_dashPattern.Clone();
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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 XPen Clone()
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{
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return new XPen(this);
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}
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/// <summary>
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/// Gets or sets the color.
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/// </summary>
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public XColor Color
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{
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get { return _color; }
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set
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{
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if (_immutable)
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throw new ArgumentException(PSSR.CannotChangeImmutableObject("XPen"));
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_dirty = _dirty || _color != value;
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_color = value;
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}
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}
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internal XColor _color;
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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 (_immutable)
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throw new ArgumentException(PSSR.CannotChangeImmutableObject("XPen"));
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_dirty = _dirty || _width != value;
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_width = value;
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}
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}
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internal double _width;
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/// <summary>
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/// Gets or sets the line join.
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/// </summary>
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public XLineJoin LineJoin
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{
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get { return _lineJoin; }
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set
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{
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if (_immutable)
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throw new ArgumentException(PSSR.CannotChangeImmutableObject("XPen"));
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_dirty = _dirty || _lineJoin != value;
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_lineJoin = value;
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}
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}
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internal XLineJoin _lineJoin;
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/// <summary>
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/// Gets or sets the line cap.
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/// </summary>
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public XLineCap LineCap
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{
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get { return _lineCap; }
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set
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{
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if (_immutable)
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throw new ArgumentException(PSSR.CannotChangeImmutableObject("XPen"));
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_dirty = _dirty || _lineCap != value;
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_lineCap = value;
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}
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}
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internal XLineCap _lineCap;
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/// <summary>
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/// Gets or sets the miter limit.
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/// </summary>
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public double MiterLimit
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{
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get { return _miterLimit; }
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set
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{
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if (_immutable)
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throw new ArgumentException(PSSR.CannotChangeImmutableObject("XPen"));
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_dirty = _dirty || _miterLimit != value;
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_miterLimit = value;
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}
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}
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internal double _miterLimit;
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/// <summary>
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/// Gets or sets the dash style.
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/// </summary>
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public XDashStyle DashStyle
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{
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get { return _dashStyle; }
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set
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{
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if (_immutable)
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throw new ArgumentException(PSSR.CannotChangeImmutableObject("XPen"));
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_dirty = _dirty || _dashStyle != value;
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_dashStyle = value;
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}
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}
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internal XDashStyle _dashStyle;
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/// <summary>
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/// Gets or sets the dash offset.
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/// </summary>
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public double DashOffset
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{
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get { return _dashOffset; }
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set
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{
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if (_immutable)
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throw new ArgumentException(PSSR.CannotChangeImmutableObject("XPen"));
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_dirty = _dirty || _dashOffset != value;
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_dashOffset = value;
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}
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}
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internal double _dashOffset;
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/// <summary>
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/// Gets or sets the dash pattern.
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/// </summary>
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public double[] DashPattern
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{
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get
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{
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if (_dashPattern == null)
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_dashPattern = new double[0];
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return _dashPattern;
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}
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set
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{
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if (_immutable)
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throw new ArgumentException(PSSR.CannotChangeImmutableObject("XPen"));
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int length = value.Length;
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//if (length == 0)
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// throw new ArgumentException("Dash pattern array must not be empty.");
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for (int idx = 0; idx < length; idx++)
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{
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if (value[idx] <= 0)
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throw new ArgumentException("Dash pattern value must greater than zero.");
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}
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_dirty = true;
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_dashStyle = XDashStyle.Custom;
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_dashPattern = (double[])value.Clone();
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}
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}
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internal double[] _dashPattern;
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/// <summary>
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/// Gets or sets a value indicating whether the pen enables overprint when used in a PDF document.
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/// Experimental, takes effect only on CMYK color mode.
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/// </summary>
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public bool Overprint
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{
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get { return _overprint; }
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set
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{
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if (_immutable)
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throw new ArgumentException(PSSR.CannotChangeImmutableObject("XPen"));
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_overprint = value;
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}
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}
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internal bool _overprint;
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#if GDI
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#if UseGdiObjects
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/// <summary>
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/// Implicit conversion from Pen to XPen
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/// </summary>
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public static implicit operator XPen(Pen pen)
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{
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XPen xpen;
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try
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{
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Lock.EnterGdiPlus();
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switch (pen.PenType)
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{
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case PenType.SolidColor:
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xpen = new XPen(pen.Color, pen.Width);
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xpen.LineJoin = (XLineJoin)pen.LineJoin;
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xpen.DashStyle = (XDashStyle)pen.DashStyle;
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xpen._miterLimit = pen.MiterLimit;
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break;
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default:
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throw new NotImplementedException("Pen type not supported by PDFsharp.");
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}
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// Bug fixed by drice2@ageone.de
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if (pen.DashStyle == System.Drawing.Drawing2D.DashStyle.Custom)
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{
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int length = pen.DashPattern.Length;
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double[] pattern = new double[length];
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for (int idx = 0; idx < length; idx++)
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pattern[idx] = pen.DashPattern[idx];
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xpen.DashPattern = pattern;
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xpen._dashOffset = pen.DashOffset;
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}
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}
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finally { Lock.ExitGdiPlus(); }
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return xpen;
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}
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#endif
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internal System.Drawing.Pen RealizeGdiPen()
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{
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if (_dirty)
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{
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if (_gdiPen == null)
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_gdiPen = new System.Drawing.Pen(_color.ToGdiColor(), (float)_width);
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else
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{
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_gdiPen.Color = _color.ToGdiColor();
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_gdiPen.Width = (float)_width;
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}
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LineCap lineCap = XConvert.ToLineCap(_lineCap);
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_gdiPen.StartCap = lineCap;
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_gdiPen.EndCap = lineCap;
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_gdiPen.LineJoin = XConvert.ToLineJoin(_lineJoin);
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_gdiPen.DashOffset = (float)_dashOffset;
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if (_dashStyle == XDashStyle.Custom)
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{
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int len = _dashPattern == null ? 0 : _dashPattern.Length;
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float[] pattern = new float[len];
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for (int idx = 0; idx < len; idx++)
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pattern[idx] = (float)_dashPattern[idx];
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_gdiPen.DashPattern = pattern;
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}
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else
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_gdiPen.DashStyle = (System.Drawing.Drawing2D.DashStyle)_dashStyle;
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}
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return _gdiPen;
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}
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#endif
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#if WPF
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internal WpfPen RealizeWpfPen()
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{
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#if !SILVERLIGHT
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if (_dirty || !_dirty) // TODOWPF: XPen is frozen by design, WPF Pen can change
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{
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//if (_wpfPen == null)
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_wpfPen = new WpfPen(new SolidColorBrush(_color.ToWpfColor()), _width);
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//else
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//{
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// _wpfPen.Brush = new SolidColorBrush(_color.ToWpfColor());
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// _wpfPen.Thickness = _width;
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//}
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PenLineCap lineCap = XConvert.ToPenLineCap(_lineCap);
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_wpfPen.StartLineCap = lineCap;
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_wpfPen.EndLineCap = lineCap;
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_wpfPen.LineJoin = XConvert.ToPenLineJoin(_lineJoin);
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if (_dashStyle == XDashStyle.Custom)
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{
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// TODOWPF: does not work in all cases
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_wpfPen.DashStyle = new System.Windows.Media.DashStyle(_dashPattern, _dashOffset);
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}
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else
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{
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switch (_dashStyle)
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{
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case XDashStyle.Solid:
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_wpfPen.DashStyle = DashStyles.Solid;
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break;
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case XDashStyle.Dash:
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//_wpfPen.DashStyle = DashStyles.Dash;
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_wpfPen.DashStyle = new System.Windows.Media.DashStyle(new double[] { 2, 2 }, 0);
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break;
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case XDashStyle.Dot:
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//_wpfPen.DashStyle = DashStyles.Dot;
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_wpfPen.DashStyle = new System.Windows.Media.DashStyle(new double[] { 0, 2 }, 1.5);
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break;
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case XDashStyle.DashDot:
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//_wpfPen.DashStyle = DashStyles.DashDot;
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_wpfPen.DashStyle = new System.Windows.Media.DashStyle(new double[] { 2, 2, 0, 2 }, 0);
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break;
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case XDashStyle.DashDotDot:
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//_wpfPen.DashStyle = DashStyles.DashDotDot;
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_wpfPen.DashStyle = new System.Windows.Media.DashStyle(new double[] { 2, 2, 0, 2, 0, 2 }, 0);
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break;
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}
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}
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}
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#else
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_wpfPen = new System.Windows.Media.Pen();
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_wpfPen.Brush = new SolidColorBrush(_color.ToWpfColor());
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_wpfPen.Thickness = _width;
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#endif
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return _wpfPen;
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}
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#endif
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bool _dirty = true;
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||
|
|
readonly bool _immutable;
|
||
|
|
#if GDI
|
||
|
|
GdiPen _gdiPen;
|
||
|
|
#endif
|
||
|
|
#if WPF
|
||
|
|
WpfPen _wpfPen;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
}
|