#region PDFsharp - A .NET library for processing PDF
//
// Authors:
//   Stefan Lange (mailto:Stefan.Lange@pdfsharp.com)
//
// Copyright (c) 2005-2007 empira Software GmbH, Cologne (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 System.Diagnostics;
using System.Runtime.InteropServices;

namespace PdfSharp.Internal
{
  /// <summary>
  /// Required native Win32 calls. Don't know what to do under Mono.
  /// </summary>
  internal class NativeMethods
  {
    NativeMethods()
    {}

    /// <summary>
    /// Reflected from System.Drawing.SafeNativeMethods+LOGFONT
    /// </summary>
    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
    public class LOGFONT
    {
      // Preserve us for warning CS0649...
      LOGFONT(int dummy)
      {
        this.lfHeight = 0;
        this.lfWidth = 0;
        this.lfEscapement = 0;
        this.lfOrientation = 0;
        this.lfWeight = 0;
        this.lfItalic = 0;
        this.lfUnderline = 0;
        this.lfStrikeOut = 0;
        this.lfCharSet = 0;
        this.lfOutPrecision = 0;
        this.lfClipPrecision = 0;
        this.lfQuality = 0;
        this.lfPitchAndFamily = 0;
        this.lfFaceName = "";
      }
      public int lfHeight;
      public int lfWidth;
      public int lfEscapement;
      public int lfOrientation;
      public int lfWeight;
      public byte lfItalic;
      public byte lfUnderline;
      public byte lfStrikeOut;
      public byte lfCharSet;
      public byte lfOutPrecision;
      public byte lfClipPrecision;
      public byte lfQuality;
      public byte lfPitchAndFamily;
      [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
      public string lfFaceName;
      public override string ToString()
      {
        object[] objArray1 = new object[0x1c] 
        { 
          "lfHeight=", this.lfHeight, 
          ", lfWidth=", this.lfWidth, 
          ", lfEscapement=", this.lfEscapement, 
          ", lfOrientation=", this.lfOrientation, 
          ", lfWeight=", this.lfWeight, 
          ", lfItalic=", this.lfItalic, 
          ", lfUnderline=", this.lfUnderline, 
          ", lfStrikeOut=", this.lfStrikeOut, 
          ", lfCharSet=", this.lfCharSet, 
          ", lfOutPrecision=", this.lfOutPrecision, 
          ", lfClipPrecision=", this.lfClipPrecision, 
          ", lfQuality=", this.lfQuality, 
          ", lfPitchAndFamily=", this.lfPitchAndFamily, 
          ", lfFaceName=", this.lfFaceName
        };
        return string.Concat(objArray1);
      }
      public LOGFONT(){}
    }

    [DllImport("user32.dll")]
    public static extern IntPtr GetDC(IntPtr hwnd);

    [DllImport("user32.dll")]
    public static extern IntPtr ReleaseDC(IntPtr hwnd, IntPtr hdc);

    [DllImport("gdi32.dll", SetLastError = true)]
    public static extern int GetFontData(
      IntPtr hdc,       // handle to DC
      uint dwTable,     // metric table name
      uint dwOffset,    // offset into table
      byte[] lpvBuffer, // buffer for returned data
      int cbData        // length of data
      );

    [DllImport("gdi32.dll", EntryPoint="CreateFontIndirectW")]
    public static extern IntPtr CreateFontIndirect(LOGFONT lpLogFont);

    [DllImport("gdi32.dll")]
    public static extern IntPtr SelectObject(IntPtr hdc, IntPtr hgdiobj);

    [DllImport("gdi32.dll")]
    public static extern bool DeleteObject(IntPtr hgdiobj);

    public const int HORZSIZE      = 4;     // Horizontal size in millimeters
    public const int VERTSIZE      = 6;     // Vertical size in millimeters
    public const int HORZRES       = 8;     // Horizontal width in pixels
    public const int VERTRES       = 10;    // Vertical height in pixels
    public const int LOGPIXELSX    = 88;    // Logical pixels/inch in X
    public const int LOGPIXELSY    = 90;    // Logical pixels/inch in Y
    [DllImport("gdi32.dll")]
    public static extern int GetDeviceCaps(IntPtr hdc, int nIndex);
  }
}
