Avalonia/src/Gtk/Avalonia.Gtk3/Interop/Native.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using gint8 = System.Byte;
using gint16 = System.Int16;
using gint32 = System.Int32;
using gint = System.Int32;
using guint16 = System.UInt16;
using guint32 = System.UInt32;
using guint = System.UInt32;
using gdouble = System.Double;

namespace Avalonia.Gtk3.Interop
{
    static class Native
    {
        public static class D
        {
            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Gtk)]
            public delegate IntPtr gtk_application_new([MarshalAs(UnmanagedType.AnsiBStr)] string appId, int flags);

            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Gtk)]
            public delegate void gtk_main_iteration();

            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Gtk)]
            public delegate IntPtr gtk_window_new(GtkWindowType windowType);

            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Gtk)]
            public delegate IntPtr gtk_init(int argc, IntPtr argv);

            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Gtk)]
            public delegate void gtk_window_present(IntPtr gtkWindow);

            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Gtk)]
            public delegate void gtk_widget_hide(IntPtr gtkWidget);

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)] //No manual import
            public delegate IntPtr gdk_get_native_handle(IntPtr gdkWindow);


            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Gtk)]
            public delegate IntPtr gtk_widget_get_window(IntPtr gtkWidget);
            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Gtk)]
            public delegate IntPtr gtk_widget_get_screen(IntPtr gtkWidget);
            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Gtk)]
            public delegate IntPtr gtk_widget_set_double_buffered(IntPtr gtkWidget, bool value);
            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Gtk)]
            public delegate IntPtr gtk_widget_set_events(IntPtr gtkWidget, uint flags);


            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Gdk)]
            public delegate int gdk_screen_get_height(IntPtr screen);
            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Gdk)]
            public delegate int gdk_screen_get_width(IntPtr screen);

            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Gdk)]
            public delegate int gdk_window_get_origin(IntPtr gdkWindow, out int x, out int y);



            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Gtk)]
            public delegate void gtk_widget_realize(IntPtr gtkWidget);

            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Gtk)]
            public delegate void gtk_window_set_title(IntPtr gtkWindow, Utf8Buffer title);


            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Gtk)]
            public delegate void gtk_window_set_decorated(IntPtr gtkWindow, bool decorated);

            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Gtk)]
            public delegate void gtk_window_get_size(IntPtr gtkWindow, out int width, out int height);
            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Gtk)]
            public delegate void gtk_window_resize(IntPtr gtkWindow, int width, int height);
            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Gtk)]
            public delegate void gtk_window_get_position(IntPtr gtkWindow, out int x, out int y);
            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Gtk)]
            public delegate void gtk_window_move(IntPtr gtkWindow, int x, int y);




            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Cairo)]
            public delegate IntPtr cairo_image_surface_create(int format, int width, int height);

            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Cairo)]
            public delegate IntPtr cairo_image_surface_get_data(IntPtr surface);

            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Cairo)]
            public delegate int cairo_image_surface_get_stride(IntPtr surface);

            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Cairo)]
            public delegate void cairo_surface_mark_dirty(IntPtr surface);

            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Cairo)]
            public delegate void cairo_surface_flush(IntPtr surface);

            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Cairo)]
            public delegate void cairo_surface_destroy(IntPtr surface);

            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Cairo)]
            public delegate void cairo_set_source_surface(IntPtr cr, IntPtr surface, double x, double y);

            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Cairo)]
            public delegate void cairo_paint(IntPtr context);

            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Gtk)]
            public delegate void gtk_widget_queue_draw_area(IntPtr gtkWindow, int x, int y, int width, int height);

            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Gdk)]
            public delegate void gdk_window_invalidate_rect(IntPtr window, ref GdkRectangle rect, bool invalidate_children);
            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Gobject)]
            public delegate ulong g_signal_connect_object(IntPtr instance, [MarshalAs(UnmanagedType.AnsiBStr)]string signal, IntPtr handler, IntPtr userData, int flags);
            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Gobject)]
            public delegate ulong g_signal_handler_disconnect(IntPtr instance, ulong connectionId);
            [UnmanagedFunctionPointer(CallingConvention.Cdecl), GtkImport(GtkDll.Glib)]
            public delegate ulong g_timeout_add(uint interval, timeout_callback callback, IntPtr data);
            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate bool signal_widget_draw(IntPtr gtkWidget, IntPtr cairoContext, IntPtr userData);

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate bool signal_onevent(IntPtr gtkWidget, IntPtr ev, IntPtr userData);


            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate bool timeout_callback(IntPtr data);
        }


        public static D.gtk_window_set_decorated GtkWindowSetDecorated;
        public static D.gtk_window_set_title GtkWindowSetTitle;
        public static D.gtk_application_new GtkApplicationNew;
        public static D.gtk_main_iteration GtkMainIteration;
        public static D.gtk_window_new GtkWindowNew;
        public static D.gtk_init GtkInit;
        public static D.gtk_window_present GtkWindowPresent;
        public static D.gtk_widget_hide GtkWidgetHide;
        public static D.gdk_get_native_handle GetNativeGdkWindowHandle;
        public static D.gtk_widget_get_window GtkWidgetGetWindow;
        public static D.gtk_widget_get_screen GtkWidgetGetScreen;
        public static D.gtk_widget_realize GtkWidgetRealize;
        public static D.gtk_window_get_size GtkWindowGetSize;
        public static D.gtk_window_resize GtkWindowResize;
        public static D.gtk_window_get_position GtkWindowGetPosition;
        public static D.gtk_window_move GtkWindowMove;
        public static D.g_signal_connect_object GSignalConnectObject;
        public static D.g_signal_handler_disconnect GSignalHandlerDisconnect;
        public static D.g_timeout_add GTimeoutAdd;
        public static D.gtk_widget_set_double_buffered GtkWidgetSetDoubleBuffered;
        public static D.gtk_widget_set_events GtkWidgetSetEvents;
        public static D.gdk_window_invalidate_rect GdkWindowInvalidateRect;
        public static D.gtk_widget_queue_draw_area GtkWidgetQueueDrawArea;
        public static D.gdk_screen_get_height GdkScreenGetHeight;
        public static D.gdk_screen_get_width GdkScreenGetWidth;
        public static D.gdk_window_get_origin GdkWindowGetOrigin;

        public static D.cairo_image_surface_create CairoImageSurfaceCreate;
        public static D.cairo_image_surface_get_data CairoImageSurfaceGetData;
        public static D.cairo_image_surface_get_stride CairoImageSurfaceGetStride;
        public static D.cairo_surface_mark_dirty CairoSurfaceMarkDirty;
        public static D.cairo_surface_flush CairoSurfaceFlush;
        public static D.cairo_surface_destroy CairoSurfaceDestroy;
        public static D.cairo_set_source_surface CairoSetSourceSurface;
        public static D.cairo_paint CairoPaint;
    }

    public enum GtkWindowType
    {
        TopLevel,
        Popup
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct GdkRectangle
    {
        public int X, Y, Width, Height;

        public static GdkRectangle FromRect(Rect rect)
        {
            return new GdkRectangle
            {
                X = (int) rect.X,
                Y = (int) rect.Y,
                Width = (int) rect.Width,
                Height = (int) rect.Height
            };
        }
    }

    enum GdkEventType
    {
        Nothing = -1,
        Delete = 0,
        Destroy = 1,
        Expose = 2,
        MotionNotify = 3,
        ButtonPress = 4,
        TwoButtonPress = 5,
        ThreeButtonPress = 6,
        ButtonRelease = 7,
        KeyPress = 8,
        KeyRelease = 9,
        EnterNotify = 10,
        LeaveNotify = 11,
        FocusChange = 12,
        Configure = 13,
        Map = 14,
        Unmap = 15,
        PropertyNotify = 16,
        SelectionClear = 17,
        SelectionRequest = 18,
        SelectionNotify = 19,
        ProximityIn = 20,
        ProximityOut = 21,
        DragEnter = 22,
        DragLeave = 23,
        DragMotion = 24,
        DragStatus = 25,
        DropStart = 26,
        DropFinished = 27,
        ClientEvent = 28,
        VisibilityNotify = 29,
        NoExpose = 30,
        Scroll = 31,
        WindowState = 32,
        Setting = 33,
        OwnerChange = 34,
        GrabBroken = 35,
    }

    enum GdkModifierType
    {
        ShiftMask = 1,
        LockMask = 2,
        ControlMask = 4,
        Mod1Mask = 8,
        Mod2Mask = 16,
        Mod3Mask = 32,
        Mod4Mask = 64,
        Mod5Mask = 128,
        Button1Mask = 256,
        Button2Mask = 512,
        Button3Mask = 1024,
        Button4Mask = 2048,
        Button5Mask = 4096,
        SuperMask = 67108864,
        HyperMask = 134217728,
        MetaMask = 268435456,
        ReleaseMask = 1073741824,
        ModifierMask = ReleaseMask | Button5Mask | Button4Mask | Button3Mask | Button2Mask | Button1Mask | Mod5Mask | Mod4Mask | Mod3Mask | Mod2Mask | Mod1Mask | ControlMask | LockMask | ShiftMask,
        None = 0,
    }

    enum GdkScrollDirection
    {
        Up,
        Down,
        Left,
        Right,
        Smooth
    }

    [StructLayout(LayoutKind.Sequential)]
    unsafe struct GdkEventButton
    {
        public GdkEventType type;
        public IntPtr window;
        public gint8 send_event;
        public guint32 time;
        public gdouble x;
        public gdouble y;
        public gdouble* axes;
        public GdkModifierType state;
        public guint button;
        public IntPtr device;
        public gdouble x_root, y_root;
    }

    [StructLayout(LayoutKind.Sequential)]
    unsafe struct GdkEventMotion
    {
        public GdkEventType type;
        public IntPtr window;
        public gint8 send_event;
        public guint32 time;
        public gdouble x;
        public gdouble y;
        public gdouble* axes;
        public GdkModifierType state;
        public gint16 is_hint;
        public IntPtr device;
        public gdouble x_root, y_root;
    }

    [StructLayout(LayoutKind.Sequential)]
    unsafe  struct GdkEventScroll
    {
        public GdkEventType type;
        public IntPtr window;
        public gint8 send_event;
        public guint32 time;
        public gdouble x;
        public gdouble y;
        public GdkModifierType state;
        public GdkScrollDirection direction;
        public IntPtr device;
        public gdouble x_root, y_root;
        public gdouble delta_x;
        public gdouble delta_y;
    }
}