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https://github.com/Ryujinx/Opentk.git
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f0fd13a23e
[X11] Fix hang when exiting XI2 input thread
675 lines
27 KiB
C#
675 lines
27 KiB
C#
#region License
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//
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// The Open Toolkit Library License
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//
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// Copyright (c) 2006 - 2010 the Open Toolkit library.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights to
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// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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// the Software, and to permit persons to whom the Software is furnished to do
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// so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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// OTHER DEALINGS IN THE SOFTWARE.
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//
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#endregion
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Runtime.InteropServices;
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using System.Threading;
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using OpenTK.Input;
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namespace OpenTK.Platform.X11
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{
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sealed class XI2MouseKeyboard : IKeyboardDriver2, IMouseDriver2, IDisposable
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{
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static readonly IntPtr ExitAtom;
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readonly object Sync = new object();
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readonly Thread ProcessingThread;
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readonly X11KeyMap KeyMap;
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bool disposed;
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class XIMouse
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{
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public MouseState State;
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public XIDeviceInfo DeviceInfo;
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public XIScrollClassInfo ScrollX = new XIScrollClassInfo { number = -1 };
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public XIScrollClassInfo ScrollY = new XIScrollClassInfo { number = -1 };
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public XIValuatorClassInfo MotionX = new XIValuatorClassInfo { number = -1 };
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public XIValuatorClassInfo MotionY = new XIValuatorClassInfo { number = -1 };
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public string Name;
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}
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class XIKeyboard
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{
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public KeyboardState State;
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public XIDeviceInfo DeviceInfo;
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public string Name;
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}
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// Atoms
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//static readonly IntPtr ButtonLeft;
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//static readonly IntPtr ButtonMiddle;
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////static readonly IntPtr ButtonRight;
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//static readonly IntPtr ButtonWheelUp;
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//static readonly IntPtr ButtonWheelDown;
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//static readonly IntPtr ButtonWheelLeft;
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//static readonly IntPtr ButtonWheelRight;
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static readonly IntPtr RelX;
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static readonly IntPtr RelY;
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//static readonly IntPtr RelHorizScroll;
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//static readonly IntPtr RelVertScroll;
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//static readonly IntPtr RelHorizWheel;
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//static readonly IntPtr RelVertWheel;
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long cursor_x, cursor_y; // For GetCursorState()
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List<XIMouse> devices = new List<XIMouse>(); // list of connected mice
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Dictionary<int, int> rawids = new Dictionary<int, int>(); // maps hardware device ids to XIMouse ids
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List<XIKeyboard> keyboards = new List<XIKeyboard>(); // list of connected keybords
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Dictionary<int, int> keyboard_ids = new Dictionary<int, int>(); // maps hardware device ids to XIKeyboard ids
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internal readonly X11WindowInfo window;
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internal static int XIOpCode { get; private set; }
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internal static int XIVersion { get; private set; }
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static readonly Functions.EventPredicate PredicateImpl = IsEventValid;
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readonly IntPtr Predicate = Marshal.GetFunctionPointerForDelegate(PredicateImpl);
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static XI2MouseKeyboard()
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{
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using (new XLock(API.DefaultDisplay))
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{
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// Mouse
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//ButtonLeft = Functions.XInternAtom(API.DefaultDisplay, "Button Left", false);
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//ButtonMiddle = Functions.XInternAtom(API.DefaultDisplay, "Button Middle", false);
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//ButtonRight = Functions.XInternAtom(API.DefaultDisplay, "Button Right", false);
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//ButtonWheelUp = Functions.XInternAtom(API.DefaultDisplay, "Button Wheel Up", false);
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//ButtonWheelDown = Functions.XInternAtom(API.DefaultDisplay, "Button Wheel Down", false);
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//ButtonWheelLeft = Functions.XInternAtom(API.DefaultDisplay, "Button Horiz Wheel Left", false);
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//ButtonWheelRight = Functions.XInternAtom(API.DefaultDisplay, "Button Horiz Wheel Right", false);
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RelX = Functions.XInternAtom(API.DefaultDisplay, "Rel X", false);
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RelY = Functions.XInternAtom(API.DefaultDisplay, "Rel Y", false);
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//RelHorizWheel = Functions.XInternAtom(API.DefaultDisplay, "Rel Horiz Wheel", false);
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//RelVertWheel = Functions.XInternAtom(API.DefaultDisplay, "Rel Vert Wheel", false);
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//RelHorizScroll = Functions.XInternAtom(API.DefaultDisplay, "Rel Horiz Scroll", false);
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//RelVertScroll = Functions.XInternAtom(API.DefaultDisplay, "Rel Vert Scroll", false);
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// Multitouch
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//TouchX = Functions.XInternAtom(API.DefaultDisplay, "Abs MT Position X", false);
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//TouchY = Functions.XInternAtom(API.DefaultDisplay, "Abs MT Position Y", false);
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//TouchMajor = Functions.XInternAtom(API.DefaultDisplay, "Abs MT Touch Major", false);
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//TouchMinor = Functions.XInternAtom(API.DefaultDisplay, "Abs MT Touch Minor", false);
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//TouchPressure = Functions.XInternAtom(API.DefaultDisplay, "Abs MT Pressure", false);
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//TouchId = Functions.XInternAtom(API.DefaultDisplay, "Abs MT Tracking ID", false);
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//TouchMaxContacts = Functions.XInternAtom(API.DefaultDisplay, "Max Contacts", false);
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// Custom
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ExitAtom = Functions.XInternAtom(API.DefaultDisplay, "Exit Input Thread Message", false);
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}
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}
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public XI2MouseKeyboard()
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{
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window = new X11WindowInfo();
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window.Display = Functions.XOpenDisplay(IntPtr.Zero);
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using (new XLock(window.Display))
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{
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XSetWindowAttributes attr = new XSetWindowAttributes();
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window.Screen = Functions.XDefaultScreen(window.Display);
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window.RootWindow = Functions.XRootWindow(window.Display, window.Screen);
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window.Handle = Functions.XCreateWindow(window.Display, window.RootWindow,
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0, 0, 1, 1, 0, 0,
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CreateWindowArgs.InputOnly, IntPtr.Zero,
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SetWindowValuemask.Nothing, attr);
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KeyMap = new X11KeyMap(window.Display);
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}
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if (!IsSupported(window.Display))
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throw new NotSupportedException("XInput2 not supported.");
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// Enable XI2 mouse/keyboard events
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// Note: the input event loop blocks waiting for these events
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// *or* a custom ClientMessage event that instructs us to exit.
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// See SendExitEvent() below.
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using (new XLock(window.Display))
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using (XIEventMask mask = new XIEventMask(1,
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XIEventMasks.RawKeyPressMask |
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XIEventMasks.RawKeyReleaseMask |
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XIEventMasks.RawButtonPressMask |
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XIEventMasks.RawButtonReleaseMask |
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XIEventMasks.RawMotionMask |
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XIEventMasks.MotionMask |
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XIEventMasks.DeviceChangedMask))
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{
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XI.SelectEvents(window.Display, window.RootWindow, mask);
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UpdateDevices();
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}
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ProcessingThread = new Thread(ProcessEvents);
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ProcessingThread.IsBackground = true;
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ProcessingThread.Start();
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}
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// Checks whether XInput2 is supported on the specified display.
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// If a display is not specified, the default display is used.
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internal static bool IsSupported(IntPtr display)
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{
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try
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{
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if (display == IntPtr.Zero)
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{
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display = API.DefaultDisplay;
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}
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using (new XLock(display))
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{
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int major, ev, error;
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if (Functions.XQueryExtension(display, "XInputExtension", out major, out ev, out error) != 0)
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{
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XIOpCode = major;
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int minor = 2;
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while (minor >= 0)
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{
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if (XI.QueryVersion(display, ref major, ref minor) == ErrorCodes.Success)
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{
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XIVersion = major * 100 + minor * 10;
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return true;
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}
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minor--;
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}
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}
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}
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}
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catch (DllNotFoundException e)
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{
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Debug.Print(e.ToString());
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Debug.Print("XInput2 extension not supported. Mouse support will suffer.");
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}
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return false;
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}
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#region IKeyboardDriver2 Members
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KeyboardState IKeyboardDriver2.GetState()
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{
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lock (Sync)
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{
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KeyboardState state = new KeyboardState();
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foreach (XIKeyboard k in keyboards)
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{
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state.MergeBits(k.State);
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}
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return state;
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}
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}
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KeyboardState IKeyboardDriver2.GetState(int index)
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{
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lock (Sync)
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{
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if (index >= 0 && index < keyboards.Count)
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{
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return keyboards[index].State;
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}
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return new KeyboardState();
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}
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}
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string IKeyboardDriver2.GetDeviceName(int index)
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{
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lock (Sync)
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{
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if (index >= 0 && index < keyboards.Count)
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{
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return keyboards[index].Name;
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}
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return String.Empty;
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}
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}
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#endregion
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#region IMouseDriver2 Members
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MouseState IMouseDriver2.GetState()
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{
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lock (Sync)
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{
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MouseState master = new MouseState();
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foreach (var d in devices)
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{
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master.MergeBits(d.State);
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}
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return master;
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}
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}
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MouseState IMouseDriver2.GetState(int index)
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{
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lock (Sync)
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{
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if (index >= 0 && index < devices.Count)
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{
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return devices[index].State;
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}
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return new MouseState();
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}
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}
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MouseState IMouseDriver2.GetCursorState()
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{
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lock (Sync)
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{
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MouseState master = (this as IMouseDriver2).GetState();
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master.X = (int)Interlocked.Read(ref cursor_x);
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master.Y = (int)Interlocked.Read(ref cursor_y);
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return master;
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}
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}
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void IMouseDriver2.SetPosition(double x, double y)
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{
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// Note: we cannot use window.Display here, because
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// that will deadlock the input thread, which is
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// blocking inside XIfEvent
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using (new XLock(API.DefaultDisplay))
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{
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Functions.XWarpPointer(API.DefaultDisplay,
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IntPtr.Zero, window.RootWindow, 0, 0, 0, 0, (int)x, (int)y);
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Functions.XFlush(API.DefaultDisplay);
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Interlocked.Exchange(ref cursor_x, (long)x);
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Interlocked.Exchange(ref cursor_y, (long)y);
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}
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}
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#endregion
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#region Private Members
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void UpdateDevices()
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{
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lock (Sync)
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{
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devices.Clear();
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keyboards.Clear();
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int count;
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unsafe
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{
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XIDeviceInfo* list = (XIDeviceInfo*)XI.QueryDevice(window.Display,
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XI.XIAllDevices, out count);
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Debug.Print("Refreshing input device list");
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Debug.Print("{0} input devices detected", count);
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for (int i = 0; i < count; i++)
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{
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switch ((list + i)->use)
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{
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case XIDeviceType.MasterKeyboard:
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//case XIDeviceType.SlaveKeyboard:
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{
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XIKeyboard k = new XIKeyboard();
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k.DeviceInfo = *(list + i);
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k.State.SetIsConnected(k.DeviceInfo.enabled);
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k.Name = Marshal.PtrToStringAnsi(k.DeviceInfo.name);
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int id = k.DeviceInfo.deviceid;
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if (!keyboard_ids.ContainsKey(id))
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{
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keyboard_ids.Add(k.DeviceInfo.deviceid, 0);
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}
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keyboard_ids[id] = keyboards.Count;
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keyboards.Add(k);
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}
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break;
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case XIDeviceType.MasterPointer:
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//case XIDeviceType.SlavePointer:
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case XIDeviceType.FloatingSlave:
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{
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XIMouse d = new XIMouse();
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d.DeviceInfo = *(list + i);
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d.State.SetIsConnected(d.DeviceInfo.enabled);
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d.Name = Marshal.PtrToStringAnsi(d.DeviceInfo.name);
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Debug.Print("Device {0} \"{1}\" is {2} and has:",
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i, d.Name, d.DeviceInfo.enabled ? "enabled" : "disabled");
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// Decode the XIDeviceInfo to axes, buttons and scroll types
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for (int j = 0; j < d.DeviceInfo.num_classes; j++)
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{
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XIAnyClassInfo* class_info = *((XIAnyClassInfo**)d.DeviceInfo.classes + j);
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switch (class_info->type)
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{
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case XIClassType.Button:
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{
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XIButtonClassInfo* button = (XIButtonClassInfo*)class_info;
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Debug.Print("\t{0} buttons", button->num_buttons);
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}
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break;
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case XIClassType.Scroll:
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{
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XIScrollClassInfo* scroll = (XIScrollClassInfo*)class_info;
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switch (scroll->scroll_type)
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{
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case XIScrollType.Vertical:
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Debug.WriteLine("\tSmooth vertical scrolling");
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d.ScrollY = *scroll;
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break;
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case XIScrollType.Horizontal:
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Debug.WriteLine("\tSmooth horizontal scrolling");
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d.ScrollX = *scroll;
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break;
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default:
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Debug.Print("\tUnknown scrolling type {0}", scroll->scroll_type);
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break;
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}
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}
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break;
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case XIClassType.Valuator:
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{
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XIValuatorClassInfo* valuator = (XIValuatorClassInfo*)class_info;
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if (valuator->label == RelX)
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{
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Debug.WriteLine("\tRelative X movement");
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d.MotionX = *valuator;
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}
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else if (valuator->label == RelY)
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{
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Debug.WriteLine("\tRelative Y movement");
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d.MotionY = *valuator;
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}
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}
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break;
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}
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}
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// Map the hardware device id to the current XIMouse id
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int id = d.DeviceInfo.deviceid;
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if (!rawids.ContainsKey(id))
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{
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rawids.Add(id, 0);
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}
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rawids[id] = devices.Count;
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devices.Add(d);
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}
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break;
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}
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}
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XI.FreeDeviceInfo((IntPtr)list);
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}
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}
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}
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void ProcessEvents()
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{
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while (!disposed)
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{
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XEvent e = new XEvent();
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XGenericEventCookie cookie;
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using (new XLock(window.Display))
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{
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Functions.XIfEvent(window.Display, ref e, Predicate, new IntPtr(XIOpCode));
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if (e.type == XEventName.ClientMessage && e.ClientMessageEvent.ptr1 == ExitAtom)
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{
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Functions.XDestroyWindow(window.Display, window.Handle);
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window.Handle = IntPtr.Zero;
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break;
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}
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if (e.type == XEventName.GenericEvent && e.GenericEvent.extension == XIOpCode)
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{
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IntPtr dummy;
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int x, y, dummy2;
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Functions.XQueryPointer(window.Display, window.RootWindow,
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out dummy, out dummy, out x, out y,
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out dummy2, out dummy2, out dummy2);
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Interlocked.Exchange(ref cursor_x, (long)x);
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Interlocked.Exchange(ref cursor_y, (long)y);
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cookie = e.GenericEventCookie;
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if (Functions.XGetEventData(window.Display, ref cookie) != 0)
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{
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switch ((XIEventType)cookie.evtype)
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{
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case XIEventType.Motion:
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// Nothing to do
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break;
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case XIEventType.RawKeyPress:
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case XIEventType.RawKeyRelease:
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case XIEventType.RawMotion:
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case XIEventType.RawButtonPress:
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case XIEventType.RawButtonRelease:
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// Delivered to all XIMouse instances
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ProcessRawEvent(ref cookie);
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break;
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case XIEventType.DeviceChanged:
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UpdateDevices();
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break;
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}
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}
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Functions.XFreeEventData(window.Display, ref cookie);
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}
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}
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}
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Debug.WriteLine("[X11] Exiting input event loop.");
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}
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void ProcessRawEvent(ref XGenericEventCookie cookie)
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{
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lock (Sync)
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{
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unsafe
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{
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XIRawEvent raw = *(XIRawEvent*)cookie.data;
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XIMouse mouse;
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XIKeyboard keyboard;
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switch (raw.evtype)
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{
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case XIEventType.RawMotion:
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if (GetMouseDevice(raw.deviceid, out mouse))
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{
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ProcessRawMotion(mouse, ref raw);
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}
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break;
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case XIEventType.RawButtonPress:
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case XIEventType.RawButtonRelease:
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if (GetMouseDevice(raw.deviceid, out mouse))
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{
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float dx, dy;
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MouseButton button = X11KeyMap.TranslateButton(raw.detail, out dx, out dy);
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mouse.State[button] = raw.evtype == XIEventType.RawButtonPress;
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}
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break;
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case XIEventType.RawKeyPress:
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case XIEventType.RawKeyRelease:
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if (GetKeyboardDevice(raw.deviceid, out keyboard))
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{
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Key key;
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if (KeyMap.TranslateKey(raw.detail, out key))
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{
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keyboard.State[key] = raw.evtype == XIEventType.RawKeyPress;
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}
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}
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break;
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}
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}
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}
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}
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bool GetMouseDevice(int deviceid, out XIMouse mouse)
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{
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if (!rawids.ContainsKey(deviceid))
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{
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Debug.Print("Unknown mouse device {0} encountered, ignoring.", deviceid);
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mouse = null;
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return false;
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}
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mouse = devices[rawids[deviceid]];
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return true;
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}
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bool GetKeyboardDevice(int deviceid, out XIKeyboard keyboard)
|
|
{
|
|
if (!keyboard_ids.ContainsKey(deviceid))
|
|
{
|
|
Debug.Print("Unknown keyboard device {0} encountered, ignoring.", deviceid);
|
|
keyboard = null;
|
|
return false;
|
|
}
|
|
keyboard = keyboards[keyboard_ids[deviceid]];
|
|
return true;
|
|
}
|
|
|
|
unsafe static void ProcessRawMotion(XIMouse d, ref XIRawEvent raw)
|
|
{
|
|
// Note: we use the raw values here, without pointer
|
|
// ballistics and any other modification.
|
|
double x = ReadRawValue(ref raw, d.MotionX.number);
|
|
double y = ReadRawValue(ref raw, d.MotionY.number);
|
|
double h = ReadRawValue(ref raw, d.ScrollX.number) / d.ScrollX.increment;
|
|
double v = ReadRawValue(ref raw, d.ScrollY.number) / d.ScrollY.increment;
|
|
|
|
d.State.X += (int)Math.Round(x);
|
|
d.State.Y += (int)Math.Round(y);
|
|
|
|
// Note: OpenTK follows the windows scrolling convention where
|
|
// (+h, +v) = (right, up). XI2 uses (+h, +v) = (right, down)
|
|
// instead, so we need to flip the vertical offset.
|
|
d.State.SetScrollRelative((float)h, (float)(-v));
|
|
}
|
|
|
|
unsafe static double ReadRawValue(ref XIRawEvent raw, int bit)
|
|
{
|
|
double value = 0;
|
|
if (IsBitSet(raw.valuators.mask, bit))
|
|
{
|
|
// Find the offset where this value is stored.
|
|
// The offset is equal to the number of bits
|
|
// set in raw.valuators.mask between [0, bit)
|
|
int offset = 0;
|
|
for (int i = 0; i < bit; i++)
|
|
{
|
|
if (IsBitSet(raw.valuators.mask, i))
|
|
{
|
|
offset++;
|
|
}
|
|
}
|
|
value = *((double*)raw.raw_values + offset);
|
|
}
|
|
return value;
|
|
}
|
|
|
|
static bool IsEventValid(IntPtr display, ref XEvent e, IntPtr arg)
|
|
{
|
|
bool valid = false;
|
|
switch (e.type)
|
|
{
|
|
case XEventName.GenericEvent:
|
|
{
|
|
long extension = (long)e.GenericEventCookie.extension;
|
|
valid =
|
|
extension == arg.ToInt64() &&
|
|
(e.GenericEventCookie.evtype == (int)XIEventType.RawKeyPress ||
|
|
e.GenericEventCookie.evtype == (int)XIEventType.RawKeyRelease ||
|
|
e.GenericEventCookie.evtype == (int)XIEventType.RawMotion ||
|
|
e.GenericEventCookie.evtype == (int)XIEventType.RawButtonPress ||
|
|
e.GenericEventCookie.evtype == (int)XIEventType.RawButtonRelease ||
|
|
e.GenericEventCookie.evtype == (int)XIEventType.DeviceChanged);
|
|
valid |= extension == 0;
|
|
break;
|
|
}
|
|
|
|
case XEventName.ClientMessage:
|
|
valid =
|
|
e.ClientMessageEvent.ptr1 == ExitAtom;
|
|
break;
|
|
}
|
|
|
|
return valid;
|
|
}
|
|
|
|
static bool IsBitSet(IntPtr mask, int bit)
|
|
{
|
|
unsafe
|
|
{
|
|
return bit >= 0 && (*((byte*)mask + (bit >> 3)) & (1 << (bit & 7))) != 0;
|
|
}
|
|
}
|
|
|
|
void SendExitEvent()
|
|
{
|
|
// Send a ClientMessage event to unblock XIfEvent
|
|
// and exit the input event loop.
|
|
using (new XLock(API.DefaultDisplay))
|
|
{
|
|
XEvent ev = new XEvent();
|
|
ev.type = XEventName.ClientMessage;
|
|
ev.ClientMessageEvent.display = window.Display;
|
|
ev.ClientMessageEvent.window = window.Handle;
|
|
ev.ClientMessageEvent.format = 32;
|
|
ev.ClientMessageEvent.ptr1 = ExitAtom;
|
|
Functions.XSendEvent(API.DefaultDisplay, window.Handle, false, 0, ref ev);
|
|
Functions.XFlush(API.DefaultDisplay);
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region IDisposable Members
|
|
|
|
public void Dispose()
|
|
{
|
|
Dispose(true);
|
|
GC.SuppressFinalize(this);
|
|
}
|
|
|
|
void Dispose(bool disposing)
|
|
{
|
|
if (!disposed)
|
|
{
|
|
disposed = true;
|
|
SendExitEvent();
|
|
}
|
|
}
|
|
|
|
~XI2MouseKeyboard()
|
|
{
|
|
Dispose(false);
|
|
}
|
|
|
|
#endregion
|
|
}
|
|
}
|
|
|