// Copyright © 2017 Paddy Xu
// 
// This file is part of QuickLook program.
// 
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// 
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
// 
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

using System;
using System.Diagnostics.CodeAnalysis;
using System.Runtime.InteropServices;
using System.Text;
using QuickLook.Common.Helpers;

namespace QuickLook.Common.NativeMethods
{
    public static class User32
    {
        public delegate int KeyboardHookProc(int code, int wParam, ref KeyboardHookStruct lParam);

        [DllImport("user32.dll")]
        public static extern int MoveWindow(IntPtr hWnd, int x, int y, int nWidth, int nHeight,
            [MarshalAs(UnmanagedType.Bool)] bool bRepaint);

        [DllImport("user32.dll")]
        public static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int x, int y, int cx, int cy,
            uint uFlags);

        [DllImport("user32.dll")]
        public static extern IntPtr SetWindowsHookEx(int idHook, KeyboardHookProc callback, IntPtr hInstance,
            uint threadId);

        [DllImport("user32.dll")]
        public static extern bool UnhookWindowsHookEx(IntPtr hInstance);

        [DllImport("user32.dll")]
        public static extern int CallNextHookEx(IntPtr idHook, int nCode, int wParam, ref KeyboardHookStruct lParam);

        [DllImport("user32.dll")]
        public static extern IntPtr SetWindowLong(IntPtr hWnd, int nIndex, int dwNewLong);

        [DllImport("user32.dll")]
        public static extern int GetWindowLong(IntPtr hWnd, int nIndex);

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

        [DllImport("user32.dll")]
        public static extern IntPtr GetWindowThreadProcessId(IntPtr hWnd, IntPtr processId);

        [DllImport("user32.dll")]
        public static extern IntPtr GetWindowThreadProcessId(IntPtr hWnd, out uint processId);

        [DllImport("user32.dll")]
        public static extern IntPtr AttachThreadInput(IntPtr idAttach, IntPtr idAttachTo, bool fAttach);

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

        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        public static extern int GetClassName(IntPtr hWnd, StringBuilder lpClassName, int nMaxCount);

        [DllImport("user32.dll")]
        public static extern IntPtr GetParent(IntPtr hWnd);

        [DllImport("user32.dll")]
        public static extern int SetWindowCompositionAttribute(IntPtr hwnd,
            ref WindowHelper.WindowCompositionAttributeData data);

        [SuppressMessage("ReSharper", "InconsistentNaming")]
        public struct KeyboardHookStruct
        {
            public int vkCode;
            public int scanCode;
            public int flags;
            public int time;
            public int dwExtraInfo;
        }

        // ReSharper disable InconsistentNaming
        public static readonly IntPtr HWND_TOPMOST = new IntPtr(-1);
        public static readonly IntPtr HWND_NOTOPMOST = new IntPtr(-2);
        public static readonly IntPtr HWND_TOP = new IntPtr(0);
        public static readonly IntPtr HWND_BOTTOM = new IntPtr(1);

        public const uint SWP_NOSIZE = 0x0001;
        public const uint SWP_NOMOVE = 0x0002;
        public const uint SWP_NOZORDER = 0x0004;
        public const uint SWP_NOREDRAW = 0x0008;
        public const uint SWP_NOACTIVATE = 0x0010;
        public const uint SWP_DRAWFRAME = 0x0020;
        public const uint SWP_FRAMECHANGED = 0x0020;
        public const uint SWP_SHOWWINDOW = 0x0040;
        public const uint SWP_HIDEWINDOW = 0x0080;
        public const uint SWP_NOCOPYBITS = 0x0100;
        public const uint SWP_NOOWNERZORDER = 0x0200;
        public const uint SWP_NOREPOSITION = 0x0200;
        public const uint SWP_NOSENDCHANGING = 0x0400;
        public const uint SWP_DEFERERASE = 0x2000;
        public const uint SWP_ASYNCWINDOWPOS = 0x4000;

        public const int WH_KEYBOARD_LL = 13;
        public const int WM_KEYDOWN = 0x100;
        public const int WM_KEYUP = 0x101;
        public const int WM_SYSKEYDOWN = 0x104;
        public const int WM_SYSKEYUP = 0x105;
        public const int GWL_EXSTYLE = -20;
        public const int WS_EX_NOACTIVATE = 0x08000000;
        // ReSharper restore InconsistentNaming
    }
}