Remotely/Remotely_ScreenCast.Linux/X11Interop/Xlib.cs

/*

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documentation for any purpose is hereby granted without fee, provided that
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Except as contained in this notice, the name of The Open Group shall not be
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*/

using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using System.Security;
using System.Security.Permissions;
using System.Text;

namespace Remotely_ScreenCast.Linux.X11Interop
{
    public static unsafe class Xlib
    {

        #region Structs
        public struct XImage
        {
            public int width;
            public int height;      /* size of image */
            public int xoffset;            /* number of pixels offset in X direction */
            public int format;         /* XYBitmap, XYPixmap, ZPixmap */
            public char* data;         /* pointer to image data */
            public int byte_order;         /* data byte order, LSBFirst, MSBFirst */
            public int bitmap_unit;        /* quant. of scanline 8, 16, 32 */
            public int bitmap_bit_order;       /* LSBFirst, MSBFirst */
            public int bitmap_pad;         /* 8, 16, 32 either XY or ZPixmap */
            public int depth;          /* depth of image */
            public int bytes_per_line;     /* accelerator to next scanline */
            public int bits_per_pixel;     /* bits per pixel (ZPixmap) */
            public ulong red_mask;     /* bits in z arrangement */
            public ulong green_mask;
            public ulong blue_mask;
            public IntPtr obdata;        /* hook for the object routines to hang on */
            
            public XImage create_image()
            {
                return new XImage();
            }

            public int destroy_image()
            {
                return 0;
            }

            public ulong get_pixel()
            {
                return 0;
            }
            public XImage sub_image()
            {
                return new XImage();
            }

            public int add_pixel()
            {
                return 0;
            }
        }
        public struct Screen {

            public IntPtr ext_data; /* hook for extension to hang data */
            public IntPtr *display;/* back pointer to display structure */ // TODO: XDisplay struct?
	        public IntPtr root;        /* Root window id. */
            public int width;
            public int height;  /* width and height of screen */
            public int mwidth;
            public int mheight;    /* width and height of  in millimeters */
            public int ndepths;        /* number of depths possible */
            public uint depths;      /* list of allowable depths on the screen */ //TODO: Depth[]
            public int root_depth;     /* bits per pixel */
            public IntPtr root_visual;    /* root visual */
            public IntPtr default_gc;      /* GC for the root root visual */
            public IntPtr cmap;      /* default color map */ // TODO: Colormap struct?
            public ulong white_pixel;
            public ulong black_pixel;  /* White and Black pixel values */
            public int max_maps, min_maps; /* max and min color maps */
            public int backing_store;  /* Never, WhenMapped, Always */
            public bool save_unders;
            public long root_input_mask;   /* initial root input mask */
        }
        public struct Depth {

            public int depth;      /* this depth (Z) of the depth */
            public int nvisuals;       /* number of Visual types at this depth */
            public Visual[] visuals;    /* list of visuals possible at this depth */
        }
        public struct Visual {

            public IntPtr ext_data; /* hook for extension to hang data */
            public int visualid;  /* visual id of this visual */
            public ulong red_mask, green_mask, blue_mask;  /* mask values */
            public int bits_per_rgb;   /* log base 2 of distinct color values */
            public int map_entries;    /* color map entries */
        }

        public class XExtData
        {
            public int number;     /* number returned by XRegisterExtension */
            public XExtData next;	/* next item on list of data for structure */
	        public IntPtr private_data;  /* data private to this extension. */
        }
    #endregion Structs

    #region Imports
    [DllImport("libX11")]
        public static extern XImage XGetImage(IntPtr display, IntPtr drawable, int x, int y, uint width, uint height, ulong plane_mask, int format);
        [DllImport("libX11")]
        public static extern int XScreenCount(IntPtr display);
        [DllImport("libX11")]
        public static extern int XDefaultScreen(IntPtr display);
        [DllImport("libX11")]
        public static extern IntPtr XOpenDisplay(string display_name);
        [DllImport("libX11")]
        public static extern IntPtr XRootWindow(IntPtr display, int screen_number);

        [DllImport("libX11")]
        public static extern XImage* XGetSubImage(IntPtr display, IntPtr drawable, int x, int y, uint width, uint height, ulong plane_mask, int format, XImage dest_image, int dest_x, int dest_y);
        [DllImport("libX11")]
        public static extern IntPtr XScreenOfDisplay(IntPtr display, int screen_number);
        [DllImport("libX11")]
        public static extern int XDisplayWidth(IntPtr display, int screen_number);
        [DllImport("libX11")]
        public static extern int XDisplayHeight(IntPtr display, int screen_number);
        [DllImport("libX11")]
        public static extern int XWidthOfScreen(IntPtr screen);
        [DllImport("libX11")]
        public static extern int XHeightOfScreen(IntPtr screen);
        [DllImport("libX11")]
        public static extern IntPtr XDefaultGC(IntPtr display, int screen_number);
        [DllImport("libX11")]
        public static extern IntPtr XDefaultRootWindow(IntPtr display);
        #endregion Imports
    }
}