83 lines
3.2 KiB
C#
83 lines
3.2 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.Drawing;
|
|
|
|
namespace PdfSharp.Pdf.Internal
|
|
{
|
|
/// <summary>
|
|
/// Helper functions for RGB and CMYK colors.
|
|
/// </summary>
|
|
static class ColorSpaceHelper
|
|
{
|
|
/// <summary>
|
|
/// Checks whether a color mode and a color match.
|
|
/// </summary>
|
|
public static XColor EnsureColorMode(PdfColorMode colorMode, XColor color)
|
|
{
|
|
#if true
|
|
if (colorMode == PdfColorMode.Rgb && color.ColorSpace != XColorSpace.Rgb)
|
|
return XColor.FromArgb((int)(color.A * 255), color.R, color.G, color.B);
|
|
|
|
if (colorMode == PdfColorMode.Cmyk && color.ColorSpace != XColorSpace.Cmyk)
|
|
return XColor.FromCmyk(color.A, color.C, color.M, color.Y, color.K);
|
|
|
|
return color;
|
|
#else
|
|
if (colorMode == PdfColorMode.Rgb && color.ColorSpace != XColorSpace.Rgb)
|
|
throw new InvalidOperationException(PSSR.InappropriateColorSpace(colorMode, color.ColorSpace));
|
|
|
|
if (colorMode == PdfColorMode.Cmyk && color.ColorSpace != XColorSpace.Cmyk)
|
|
throw new InvalidOperationException(PSSR.InappropriateColorSpace(colorMode, color.ColorSpace));
|
|
#endif
|
|
}
|
|
|
|
/// <summary>
|
|
/// Checks whether the color mode of a document and a color match.
|
|
/// </summary>
|
|
public static XColor EnsureColorMode(PdfDocument document, XColor color)
|
|
{
|
|
if (document == null)
|
|
throw new ArgumentNullException("document");
|
|
|
|
return EnsureColorMode(document.Options.ColorMode, color);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Determines whether two colors are equal referring to their CMYK color values.
|
|
/// </summary>
|
|
public static bool IsEqualCmyk(XColor x, XColor y)
|
|
{
|
|
if (x.ColorSpace != XColorSpace.Cmyk || y.ColorSpace != XColorSpace.Cmyk)
|
|
return false;
|
|
return x.C == y.C && x.M == y.M && x.Y == y.Y && x.K == y.K;
|
|
}
|
|
}
|
|
} |