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