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/*
* libcaca .NET bindings for libcaca
* Copyright (c) 2006 Jean-Yves Lamoureux <jylam@lnxscene.org>
* 2007 Sam Hocevar <sam@hocevar.net>
* All Rights Reserved
*
* This library is free software. It comes without any warranty, to
* the extent permitted by applicable law. You can redistribute it
* and/or modify it under the terms of the Do What the Fuck You Want
* to Public License, Version 2, as published by Sam Hocevar. See
* http://www.wtfpl.net/ for more details.
*/
using System;
using System.Runtime.InteropServices;
using System.Security;
using System.Drawing;
namespace Caca
{
public class Font : IDisposable
{
private IntPtr _font;
private GCHandle _gch;
[DllImport("libcaca.dll", CallingConvention=CallingConvention.Cdecl),
SuppressUnmanagedCodeSecurity]
private static extern IntPtr caca_load_font(IntPtr data, uint len);
public Font(string s)
{
IntPtr name = Marshal.StringToHGlobalAnsi(s);
_font = caca_load_font(name, 0);
Marshal.FreeHGlobal(name);
}
public Font(byte[] buf)
{
GCHandle _gch = GCHandle.Alloc(buf, GCHandleType.Pinned);
_font = caca_load_font(_gch.AddrOfPinnedObject(),
(uint)buf.Length);
}
[DllImport("libcaca.dll", CallingConvention=CallingConvention.Cdecl),
SuppressUnmanagedCodeSecurity]
private static extern int caca_free_font(IntPtr d);
public void Dispose()
{
caca_free_font(_font);
_gch.Free();
GC.SuppressFinalize(this);
}
[DllImport("libcaca.dll", CallingConvention=CallingConvention.Cdecl),
SuppressUnmanagedCodeSecurity]
private static extern IntPtr caca_get_font_list();
public static string[] getList()
{
IntPtr l = caca_get_font_list();
int size;
for(size = 0; true; size++)
if(Marshal.ReadIntPtr(l, IntPtr.Size * size) == IntPtr.Zero)
break;
string[] ret = new string[size];
for(int i = 0; i < size; i++)
{
IntPtr s = Marshal.ReadIntPtr(l, IntPtr.Size * i);
ret[i] = Marshal.PtrToStringAnsi(s);
}
return ret;
}
[DllImport("libcaca.dll", CallingConvention=CallingConvention.Cdecl),
SuppressUnmanagedCodeSecurity]
private static extern int caca_get_font_width(IntPtr font);
[DllImport("libcaca.dll", CallingConvention=CallingConvention.Cdecl),
SuppressUnmanagedCodeSecurity]
private static extern int caca_get_font_height(IntPtr font);
public Size Size
{
get { return new Size(caca_get_font_width(_font),
caca_get_font_height(_font)); }
}
[DllImport("libcaca.dll", CallingConvention=CallingConvention.Cdecl),
SuppressUnmanagedCodeSecurity]
private static extern IntPtr caca_get_font_blocks(IntPtr font);
public int[,] getBlocks()
{
IntPtr l = caca_get_font_blocks(_font);
int size;
for(size = 1; true; size += 2)
if(Marshal.ReadIntPtr(l, IntPtr.Size * size) == IntPtr.Zero)
break;
int[,] ret = new int[size,2];
for(int i = 0; i < size; i++)
{
ret[i,0] = (int)Marshal.ReadIntPtr(l, IntPtr.Size * i * 2);
ret[i,1] = (int)Marshal.ReadIntPtr(l, IntPtr.Size * i * 2 + 1);
}
return ret;
}
[DllImport("libcaca.dll", CallingConvention=CallingConvention.Cdecl),
SuppressUnmanagedCodeSecurity]
private static extern int caca_render_canvas(IntPtr cv, IntPtr f,
IntPtr buf, int w, int h,
int pitch);
public int Render(Canvas cv, uint[,] buf, int pitch)
{
GCHandle gch = GCHandle.Alloc(buf, GCHandleType.Pinned);
int ret = caca_render_canvas(cv._c_cv, _font,
gch.AddrOfPinnedObject(),
buf.GetLength(0), buf.GetLength(1),
pitch);
gch.Free();
return ret;
}
}
}
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