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X11Window.cs
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using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using Avalonia.Reactive;
using System.Text;
using System.Threading.Tasks;
using System.Threading;
using Avalonia.Controls;
using Avalonia.Controls.Platform;
using Avalonia.Controls.Primitives.PopupPositioning;
using Avalonia.FreeDesktop;
using Avalonia.Input;
using Avalonia.Input.Raw;
using Avalonia.Input.TextInput;
using Avalonia.OpenGL;
using Avalonia.OpenGL.Egl;
using Avalonia.Platform;
using Avalonia.Platform.Storage;
using Avalonia.Rendering.Composition;
using Avalonia.Threading;
using Avalonia.X11.Glx;
using Avalonia.X11.NativeDialogs;
using static Avalonia.X11.XLib;
using Avalonia.Input.Platform;
using System.Runtime.InteropServices;
using Avalonia.Dialogs;
using Avalonia.Platform.Storage.FileIO;
// ReSharper disable IdentifierTypo
// ReSharper disable StringLiteralTypo
#nullable enable
namespace Avalonia.X11
{
internal unsafe partial class X11Window : IWindowImpl, IPopupImpl, IXI2Client,
IX11OptionsToplevelImplFeature
{
private readonly AvaloniaX11Platform _platform;
private readonly bool _popup;
private readonly bool _overrideRedirect;
private readonly X11Info _x11;
private XConfigureEvent? _configure;
private PixelPoint? _configurePoint;
private bool _triggeredExpose;
private IInputRoot? _inputRoot;
private readonly MouseDevice _mouse;
private readonly TouchDevice _touch;
private readonly IKeyboardDevice _keyboard;
private readonly ITopLevelNativeMenuExporter? _nativeMenuExporter;
private readonly IStorageProvider _storageProvider;
private readonly X11NativeControlHost _nativeControlHost;
private PixelPoint? _position;
private PixelSize _realSize;
private bool _cleaningUp;
private IntPtr _handle;
private IntPtr _xic;
private IntPtr _renderHandle;
private IntPtr _xSyncCounter;
private XSyncValue _xSyncValue;
private XSyncState _xSyncState = 0;
private bool _mapped;
private bool _wasMappedAtLeastOnce = false;
private double? _scalingOverride;
private bool _disabled;
private TransparencyHelper? _transparencyHelper;
private RawEventGrouper? _rawEventGrouper;
private bool _useRenderWindow = false;
private bool _useCompositorDrivenRenderWindowResize = false;
private bool _usePositioningFlags = false;
private X11WindowMode _mode;
private enum XSyncState
{
None,
WaitConfigure,
WaitPaint
}
public X11Window(AvaloniaX11Platform platform, IWindowImpl? popupParent, bool overrideRedirect = false)
: this(platform, popupParent,
platform.Options.EnableInputFocusProxy
? new InputProxyWindowMode()
: new DefaultTopLevelWindowMode(),
overrideRedirect)
{
}
public X11Window(AvaloniaX11Platform platform, IWindowImpl? popupParent, X11WindowMode mode,
bool overrideRedirect = false)
{
_platform = platform;
_mode = mode;
_mode.Init(this);
_popup = popupParent != null;
_overrideRedirect = _popup || overrideRedirect;
_x11 = platform.Info;
_mouse = new MouseDevice();
_touch = new TouchDevice();
_keyboard = platform.KeyboardDevice;
var glfeature = AvaloniaLocator.Current.GetService<IPlatformGraphics>();
XSetWindowAttributes attr = new XSetWindowAttributes();
var valueMask = default(SetWindowValuemask);
attr.backing_store = 1;
attr.bit_gravity = Gravity.NorthWestGravity;
attr.win_gravity = Gravity.NorthWestGravity;
valueMask |= SetWindowValuemask.BackPixel | SetWindowValuemask.BorderPixel
| SetWindowValuemask.BackPixmap | SetWindowValuemask.BackingStore
| SetWindowValuemask.BitGravity | SetWindowValuemask.WinGravity;
if (_overrideRedirect)
{
attr.override_redirect = 1;
valueMask |= SetWindowValuemask.OverrideRedirect;
}
XVisualInfo? visualInfo = null;
// OpenGL seems to be do weird things to it's current window which breaks resize sometimes
_useRenderWindow = glfeature != null;
var glx = glfeature as GlxPlatformGraphics;
if (glx != null)
{
visualInfo = *glx.Display.VisualInfo;
// TODO: We should query this from the active render surface, however we don't actually track what
// the target sufrace currently is
_useCompositorDrivenRenderWindowResize = true;
}
else if (glfeature == null)
visualInfo = _x11.TransparentVisualInfo;
var egl = glfeature as EglPlatformGraphics;
var visual = IntPtr.Zero;
var depth = 24;
if (visualInfo != null)
{
visual = visualInfo.Value.visual;
depth = (int)visualInfo.Value.depth;
attr.colormap = XCreateColormap(_x11.Display, _x11.RootWindow, visualInfo.Value.visual, 0);
valueMask |= SetWindowValuemask.ColorMap;
}
int defaultWidth = 0, defaultHeight = 0;
if (!_popup && _platform.Screens != null)
{
var monitor = _platform.Screens.AllScreens.OrderBy(x => x.Scaling)
.FirstOrDefault(m => m.Bounds.Contains(_position ?? default));
if (monitor != null)
{
// Emulate Window 7+'s default window size behavior.
defaultWidth = (int)(monitor.WorkingArea.Width * 0.75d);
defaultHeight = (int)(monitor.WorkingArea.Height * 0.7d);
}
}
// check if the calculated size is zero then compensate to hardcoded resolution
defaultWidth = Math.Max(defaultWidth, 300);
defaultHeight = Math.Max(defaultHeight, 200);
_handle = XCreateWindow(_x11.Display, _x11.RootWindow, 10, 10, defaultWidth, defaultHeight, 0,
depth,
(int)CreateWindowArgs.InputOutput,
visual,
new UIntPtr((uint)valueMask), ref attr);
if (_useRenderWindow)
_renderHandle = XCreateWindow(_x11.Display, _handle, 0, 0, defaultWidth, defaultHeight, 0, depth,
(int)CreateWindowArgs.InputOutput,
visual,
new UIntPtr((uint)(SetWindowValuemask.BorderPixel | SetWindowValuemask.BitGravity |
SetWindowValuemask.WinGravity | SetWindowValuemask.BackingStore)), ref attr);
else
_renderHandle = _handle;
Handle = new PlatformHandle(_handle, "XID");
_mode.OnHandleCreated(_handle);
_realSize = new PixelSize(defaultWidth, defaultHeight);
platform.Windows[_handle] = OnEvent;
XEventMask ignoredMask = XEventMask.SubstructureRedirectMask
| XEventMask.ResizeRedirectMask
| XEventMask.PointerMotionHintMask;
if (platform.XI2 != null)
ignoredMask |= platform.XI2.AddWindow(_handle, this);
var mask = new IntPtr(0xffffff ^ (int)ignoredMask);
XSelectInput(_x11.Display, _handle, mask);
if (!_overrideRedirect)
{
var protocols = new[]
{
_x11.Atoms.WM_DELETE_WINDOW
};
XSetWMProtocols(_x11.Display, _handle, protocols, protocols.Length);
SetNetWmWindowType(X11NetWmWindowType.Normal);
SetWmClass(_handle, _platform.Options.WmClass);
}
var surfaces = new List<object>
{
new X11FramebufferSurface(_x11.DeferredDisplay, _renderHandle,
depth, _platform.Options.UseRetainedFramebuffer ?? false)
};
if (egl != null)
surfaces.Insert(0,
new EglGlPlatformSurface(new SurfaceInfo(this, _x11.DeferredDisplay, _handle, _renderHandle)));
if (glx != null)
surfaces.Insert(0, new GlxGlPlatformSurface(new SurfaceInfo(this, _x11.DeferredDisplay, _handle, _renderHandle)));
surfaces.Add(new SurfacePlatformHandle(this));
Surfaces = surfaces.ToArray();
UpdateMotifHints();
UpdateSizeHints(null);
_rawEventGrouper = new RawEventGrouper(DispatchInput, platform.EventGrouperDispatchQueue);
_transparencyHelper = new TransparencyHelper(_x11, _handle, platform.Globals);
_transparencyHelper.SetTransparencyRequest(Array.Empty<WindowTransparencyLevel>());
CreateIC();
XFlush(_x11.Display);
if(_popup)
PopupPositioner = new ManagedPopupPositioner(new ManagedPopupPositionerPopupImplHelper(popupParent!, MoveResize));
if (platform.Options.UseDBusMenu)
_nativeMenuExporter = DBusMenuExporter.TryCreateTopLevelNativeMenu(_handle);
_nativeControlHost = new X11NativeControlHost(_platform, this);
InitializeIme();
var data = new List<IntPtr> { _x11.Atoms.WM_DELETE_WINDOW, _x11.Atoms._NET_WM_SYNC_REQUEST };
_mode.AppendWmProtocols(data);
XChangeProperty(_x11.Display, _handle, _x11.Atoms.WM_PROTOCOLS, _x11.Atoms.XA_ATOM, 32,
PropertyMode.Replace, data.ToArray(), data.Count);
if (_x11.HasXSync)
{
_xSyncCounter = XSyncCreateCounter(_x11.Display, _xSyncValue);
XChangeProperty(_x11.Display, _handle, _x11.Atoms._NET_WM_SYNC_REQUEST_COUNTER,
_x11.Atoms.XA_CARDINAL, 32, PropertyMode.Replace, ref _xSyncCounter, 1);
}
_storageProvider = new FallbackStorageProvider(new[]
{
() => _platform.Options.UseDBusFilePicker
? DBusSystemDialog.TryCreateAsync(Handle)
: Task.FromResult<IStorageProvider?>(null),
() => GtkSystemDialog.TryCreate(this),
() => Task.FromResult(InputRoot is TopLevel tl
? (IStorageProvider?)new ManagedStorageProvider(tl)
: null)
});
platform.X11Screens.Changed += OnScreensChanged;
}
private class SurfaceInfo : EglGlPlatformSurface.IEglWindowGlPlatformSurfaceInfo
{
private readonly X11Window _window;
private readonly IntPtr _display;
private readonly IntPtr _parent;
public SurfaceInfo(X11Window window, IntPtr display, IntPtr parent, IntPtr xid)
{
_window = window;
_display = display;
_parent = parent;
Handle = xid;
}
public IntPtr Handle { get; }
public PixelSize Size
{
get
{
XLockDisplay(_display);
XGetGeometry(_display, _parent, out var geo);
XResizeWindow(_display, Handle, geo.width, geo.height);
XUnlockDisplay(_display);
return new PixelSize(geo.width, geo.height);
}
}
public double Scaling => _window.RenderScaling;
}
private void UpdateMotifHints()
{
if(_overrideRedirect)
return;
var functions = MotifFunctions.Move | MotifFunctions.Close | MotifFunctions.Resize |
MotifFunctions.Minimize | MotifFunctions.Maximize;
var decorations = MotifDecorations.Menu | MotifDecorations.Title | MotifDecorations.Border |
MotifDecorations.Maximize | MotifDecorations.Minimize | MotifDecorations.ResizeH;
if (_popup
|| _systemDecorations == SystemDecorations.None)
decorations = 0;
if (!_canResize || !IsEnabled)
{
functions &= ~(MotifFunctions.Resize | MotifFunctions.Maximize);
decorations &= ~(MotifDecorations.Maximize | MotifDecorations.ResizeH);
}
if (!IsEnabled)
{
functions &= ~(MotifFunctions.Resize | MotifFunctions.Minimize);
UpdateSizeHints(null, true);
}
else
{
UpdateSizeHints(null);
}
var hints = new MotifWmHints
{
flags = new IntPtr((int)(MotifFlags.Decorations | MotifFlags.Functions)),
decorations = new IntPtr((int)decorations),
functions = new IntPtr((int)functions)
};
XChangeProperty(_x11.Display, _handle,
_x11.Atoms._MOTIF_WM_HINTS, _x11.Atoms._MOTIF_WM_HINTS, 32,
PropertyMode.Replace, ref hints, 5);
}
private void UpdateSizeHints(PixelSize? preResize, bool forceDisableResize = false)
{
if (_overrideRedirect)
return;
var min = _minMaxSize.minSize;
var max = _minMaxSize.maxSize;
if (!_canResize || forceDisableResize)
{
if (preResize.HasValue)
{
max = min = preResize.Value;
}
else
{
max = min = _realSize;
}
}
else
{
if (preResize.HasValue)
{
var desired = preResize.Value;
max = new PixelSize(Math.Max(desired.Width, max.Width), Math.Max(desired.Height, max.Height));
min = new PixelSize(Math.Min(desired.Width, min.Width), Math.Min(desired.Height, min.Height));
}
}
var hints = new XSizeHints
{
min_width = min.Width,
min_height = min.Height
};
hints.height_inc = hints.width_inc = 1;
var flags = XSizeHintsFlags.PMinSize | XSizeHintsFlags.PResizeInc;
if (_usePositioningFlags)
flags |= XSizeHintsFlags.PPosition | XSizeHintsFlags.PSize;
// People might be passing double.MaxValue
if (max.Width < 100000 && max.Height < 100000)
{
hints.max_width = max.Width;
hints.max_height = max.Height;
flags |= XSizeHintsFlags.PMaxSize;
}
hints.flags = (IntPtr)flags;
XSetWMNormalHints(_x11.Display, _handle, ref hints);
}
public Size ClientSize => new Size(_realSize.Width / RenderScaling, _realSize.Height / RenderScaling);
public Size? FrameSize
{
get
{
var extents = GetFrameExtents();
if(extents == null)
{
return null;
}
return new Size(
(_realSize.Width + extents.Value.Left + extents.Value.Right) / RenderScaling,
(_realSize.Height + extents.Value.Top + extents.Value.Bottom) / RenderScaling);
}
}
public double RenderScaling
{
get => Interlocked.CompareExchange(ref _scaling, 0.0, 0.0);
private set => Interlocked.Exchange(ref _scaling, value);
}
public double DesktopScaling => RenderScaling;
public IEnumerable<object> Surfaces { get; }
public Action<RawInputEventArgs>? Input { get; set; }
public Action<Rect>? Paint { get; set; }
public Action<Size, WindowResizeReason>? Resized { get; set; }
//TODO
public Action<double>? ScalingChanged { get; set; }
public Action? Deactivated { get; set; }
public Action? Activated { get; set; }
public Func<WindowCloseReason, bool>? Closing { get; set; }
public Action<WindowState>? WindowStateChanged { get; set; }
public Action<WindowTransparencyLevel>? TransparencyLevelChanged
{
get => _transparencyHelper?.TransparencyLevelChanged;
set
{
if (_transparencyHelper != null)
_transparencyHelper.TransparencyLevelChanged = value;
}
}
public Action<bool>? ExtendClientAreaToDecorationsChanged { get; set; }
public Thickness ExtendedMargins { get; } = new Thickness();
public Thickness OffScreenMargin { get; } = new Thickness();
public bool IsClientAreaExtendedToDecorations { get; }
public Action? Closed { get; set; }
public Action<PixelPoint>? PositionChanged { get; set; }
public Action? LostFocus { get; set; }
public Compositor Compositor => _platform.Compositor;
private void OnEvent(ref XEvent ev)
{
if (_inputRoot is null)
return;
if(_mode.OnEvent(ref ev))
return;
if (ev.type == XEventName.MapNotify)
{
_mapped = true;
if (_useRenderWindow)
XMapWindow(_x11.Display, _renderHandle);
}
else if (ev.type == XEventName.UnmapNotify)
_mapped = false;
else if (ev.type == XEventName.Expose ||
(ev.type == XEventName.VisibilityNotify &&
ev.VisibilityEvent.state < 2))
{
EnqueuePaint();
}
else if (ev.type == XEventName.FocusIn)
{
if (ActivateTransientChildIfNeeded())
return;
// See: https://github.com/fltk/fltk/issues/295
if ((NotifyMode)ev.FocusChangeEvent.mode is not NotifyMode.NotifyNormal)
return;
Activated?.Invoke();
_imeControl?.SetWindowActive(true);
}
else if (ev.type == XEventName.FocusOut)
{
// See: https://github.com/fltk/fltk/issues/295
if ((NotifyMode)ev.FocusChangeEvent.mode is not NotifyMode.NotifyNormal)
return;
_imeControl?.SetWindowActive(false);
Deactivated?.Invoke();
}
else if (ev.type == XEventName.MotionNotify)
MouseEvent(RawPointerEventType.Move, ref ev, ev.MotionEvent.state);
else if (ev.type == XEventName.LeaveNotify)
MouseEvent(RawPointerEventType.LeaveWindow, ref ev, ev.CrossingEvent.state);
else if (ev.type == XEventName.PropertyNotify)
{
OnPropertyChange(ev.PropertyEvent.atom, ev.PropertyEvent.state == 0);
}
else if (ev.type == XEventName.ButtonPress)
{
if (ActivateTransientChildIfNeeded())
return;
if (ev.ButtonEvent.button < 4 || ev.ButtonEvent.button == 8 || ev.ButtonEvent.button == 9)
MouseEvent(
ev.ButtonEvent.button switch
{
1 => RawPointerEventType.LeftButtonDown,
2 => RawPointerEventType.MiddleButtonDown,
3 => RawPointerEventType.RightButtonDown,
8 => RawPointerEventType.XButton1Down,
9 => RawPointerEventType.XButton2Down,
_ => throw new NotSupportedException("Unexepected RawPointerEventType.")
},
ref ev, ev.ButtonEvent.state);
else
{
var delta = ev.ButtonEvent.button == 4
? new Vector(0, 1)
: ev.ButtonEvent.button == 5
? new Vector(0, -1)
: ev.ButtonEvent.button == 6
? new Vector(1, 0)
: new Vector(-1, 0);
ScheduleInput(new RawMouseWheelEventArgs(_mouse, (ulong)ev.ButtonEvent.time.ToInt64(),
_inputRoot, new Point(ev.ButtonEvent.x, ev.ButtonEvent.y), delta,
TranslateModifiers(ev.ButtonEvent.state)), ref ev);
}
}
else if (ev.type == XEventName.ButtonRelease)
{
if (ev.ButtonEvent.button < 4 || ev.ButtonEvent.button == 8 || ev.ButtonEvent.button == 9)
MouseEvent(
ev.ButtonEvent.button switch
{
1 => RawPointerEventType.LeftButtonUp,
2 => RawPointerEventType.MiddleButtonUp,
3 => RawPointerEventType.RightButtonUp,
8 => RawPointerEventType.XButton1Up,
9 => RawPointerEventType.XButton2Up,
_ => throw new NotSupportedException("Unexepected RawPointerEventType.")
},
ref ev, ev.ButtonEvent.state);
}
else if (ev.type == XEventName.ConfigureNotify)
{
if (ev.ConfigureEvent.window != _handle)
return;
var needEnqueue = (_configure == null);
_configure = ev.ConfigureEvent;
if (ev.ConfigureEvent.override_redirect != 0 || ev.ConfigureEvent.send_event != 0)
_configurePoint = new PixelPoint(ev.ConfigureEvent.x, ev.ConfigureEvent.y);
else
{
XTranslateCoordinates(_x11.Display, _handle, _x11.RootWindow,
0, 0,
out var tx, out var ty, out _);
_configurePoint = new PixelPoint(tx, ty);
}
if (needEnqueue)
Dispatcher.UIThread.Post(() =>
{
if (_configure == null)
return;
var cev = _configure.Value;
var npos = _configurePoint.Value;
_configure = null;
_configurePoint = null;
var nsize = new PixelSize(cev.width, cev.height);
var changedSize = _realSize != nsize;
var changedPos = _position == null || npos != _position;
_realSize = nsize;
_position = npos;
bool updatedSizeViaScaling = false;
if (changedPos)
{
PositionChanged?.Invoke(npos);
updatedSizeViaScaling = UpdateScaling();
}
UpdateImePosition();
if (changedSize && !updatedSizeViaScaling && !_overrideRedirect)
Resized?.Invoke(ClientSize, WindowResizeReason.Unspecified);
}, DispatcherPriority.AsyncRenderTargetResize);
if (_useRenderWindow && !_useCompositorDrivenRenderWindowResize)
XConfigureResizeWindow(_x11.Display, _renderHandle, ev.ConfigureEvent.width,
ev.ConfigureEvent.height);
if (_xSyncState == XSyncState.WaitConfigure)
{
_xSyncState = XSyncState.WaitPaint;
EnqueuePaint();
}
}
else if (ev.type == XEventName.DestroyNotify
&& ev.DestroyWindowEvent.window == _handle)
{
_mode.OnDestroyNotify();
Cleanup(true);
}
else if (ev.type == XEventName.ClientMessage)
{
if (ev.ClientMessageEvent.message_type == _x11.Atoms.WM_PROTOCOLS)
{
if (ev.ClientMessageEvent.ptr1 == _x11.Atoms.WM_DELETE_WINDOW)
{
if (IsEnabled && Closing?.Invoke(WindowCloseReason.WindowClosing) != true)
Dispose();
}
else if (ev.ClientMessageEvent.ptr1 == _x11.Atoms._NET_WM_SYNC_REQUEST)
{
_xSyncValue.Lo = new UIntPtr(ev.ClientMessageEvent.ptr3.ToPointer()).ToUInt32();
_xSyncValue.Hi = ev.ClientMessageEvent.ptr4.ToInt32();
_xSyncState = XSyncState.WaitConfigure;
}
}
}
else if (ev.type == XEventName.KeyPress || ev.type == XEventName.KeyRelease)
{
if (ActivateTransientChildIfNeeded())
return;
HandleKeyEvent(ref ev);
}
}
private Thickness? GetFrameExtents()
{
if (_systemDecorations != SystemDecorations.Full)
return new Thickness(0);
XGetWindowProperty(_x11.Display, _handle, _x11.Atoms._NET_FRAME_EXTENTS, IntPtr.Zero,
new IntPtr(4), false, (IntPtr)Atom.AnyPropertyType, out var _,
out var _, out var nitems, out var _, out var prop);
if (nitems.ToInt64() != 4)
{
// Window hasn't been mapped by the WM yet, so can't get the extents.
return null;
}
var data = (IntPtr*)prop.ToPointer();
var extents = new Thickness(data[0].ToInt32(), data[2].ToInt32(), data[1].ToInt32(), data[3].ToInt32());
XFree(prop);
return extents;
}
private void OnScreensChanged()
{
UpdateScaling();
}
private bool UpdateScaling(bool skipResize = false)
{
double newScaling;
if (_scalingOverride.HasValue)
newScaling = _scalingOverride.Value;
else
{
var monitor = _platform.X11Screens.AllScreens.OrderBy(x => x.Scaling)
.FirstOrDefault(m => m.Bounds.Contains(_position ?? default));
newScaling = monitor?.Scaling ?? RenderScaling;
}
if (RenderScaling != newScaling)
{
var oldScaledSize = ClientSize;
RenderScaling = newScaling;
ScalingChanged?.Invoke(RenderScaling);
UpdateImePosition();
SetMinMaxSize(_scaledMinMaxSize.minSize, _scaledMinMaxSize.maxSize);
if(!skipResize)
Resize(oldScaledSize, true, WindowResizeReason.DpiChange);
return true;
}
return false;
}
private WindowState _lastWindowState;
public WindowState WindowState
{
get => _lastWindowState;
set
{
if(_lastWindowState == value)
return;
_lastWindowState = value;
if (value == WindowState.Minimized)
{
XIconifyWindow(_x11.Display, _handle, _x11.DefaultScreen);
}
else if (value == WindowState.Maximized)
{
ChangeWMAtoms(false, _x11.Atoms._NET_WM_STATE_HIDDEN);
ChangeWMAtoms(false, _x11.Atoms._NET_WM_STATE_FULLSCREEN);
ChangeWMAtoms(true, _x11.Atoms._NET_WM_STATE_MAXIMIZED_VERT,
_x11.Atoms._NET_WM_STATE_MAXIMIZED_HORZ);
}
else if (value == WindowState.FullScreen)
{
ChangeWMAtoms(false, _x11.Atoms._NET_WM_STATE_HIDDEN);
ChangeWMAtoms(true, _x11.Atoms._NET_WM_STATE_FULLSCREEN);
ChangeWMAtoms(false, _x11.Atoms._NET_WM_STATE_MAXIMIZED_VERT,
_x11.Atoms._NET_WM_STATE_MAXIMIZED_HORZ);
}
else
{
ChangeWMAtoms(false, _x11.Atoms._NET_WM_STATE_HIDDEN);
ChangeWMAtoms(false, _x11.Atoms._NET_WM_STATE_FULLSCREEN);
ChangeWMAtoms(false, _x11.Atoms._NET_WM_STATE_MAXIMIZED_VERT,
_x11.Atoms._NET_WM_STATE_MAXIMIZED_HORZ);
SendNetWMMessage(_x11.Atoms._NET_ACTIVE_WINDOW, (IntPtr)1, _x11.LastActivityTimestamp,
IntPtr.Zero);
}
WindowStateChanged?.Invoke(value);
}
}
private void OnPropertyChange(IntPtr atom, bool hasValue)
{
if (atom == _x11.Atoms._NET_FRAME_EXTENTS)
{
// Occurs once the window has been mapped, which is the earliest the extents
// can be retrieved, so invoke event to force update of TopLevel.FrameSize.
Resized?.Invoke(ClientSize, WindowResizeReason.Unspecified);
}
if (atom == _x11.Atoms._NET_WM_STATE)
{
WindowState state = WindowState.Normal;
if(hasValue)
{
XGetWindowProperty(_x11.Display, _handle, _x11.Atoms._NET_WM_STATE, IntPtr.Zero, new IntPtr(256),
false, (IntPtr)Atom.XA_ATOM, out _, out _, out var nitems, out _,
out var prop);
int maximized = 0;
var pitems = (IntPtr*)prop.ToPointer();
for (var c = 0; c < nitems.ToInt32(); c++)
{
if (pitems[c] == _x11.Atoms._NET_WM_STATE_HIDDEN)
{
state = WindowState.Minimized;
break;
}
if(pitems[c] == _x11.Atoms._NET_WM_STATE_FULLSCREEN)
{
state = WindowState.FullScreen;
break;
}
if (pitems[c] == _x11.Atoms._NET_WM_STATE_MAXIMIZED_HORZ ||
pitems[c] == _x11.Atoms._NET_WM_STATE_MAXIMIZED_VERT)
{
maximized++;
if (maximized == 2)
{
state = WindowState.Maximized;
break;
}
}
}
XFree(prop);
}
if (_lastWindowState != state)
{
_lastWindowState = state;
WindowStateChanged?.Invoke(state);
}
}
}
private static RawInputModifiers TranslateModifiers(XModifierMask state)
{
var rv = default(RawInputModifiers);
if (state.HasAllFlags(XModifierMask.Button1Mask))
rv |= RawInputModifiers.LeftMouseButton;
if (state.HasAllFlags(XModifierMask.Button2Mask))
rv |= RawInputModifiers.RightMouseButton;
if (state.HasAllFlags(XModifierMask.Button3Mask))
rv |= RawInputModifiers.MiddleMouseButton;
if (state.HasAllFlags(XModifierMask.Button4Mask))
rv |= RawInputModifiers.XButton1MouseButton;
if (state.HasAllFlags(XModifierMask.Button5Mask))
rv |= RawInputModifiers.XButton2MouseButton;
if (state.HasAllFlags(XModifierMask.ShiftMask))
rv |= RawInputModifiers.Shift;
if (state.HasAllFlags(XModifierMask.ControlMask))
rv |= RawInputModifiers.Control;
if (state.HasAllFlags(XModifierMask.Mod1Mask))
rv |= RawInputModifiers.Alt;
if (state.HasAllFlags(XModifierMask.Mod4Mask))
rv |= RawInputModifiers.Meta;
return rv;
}
private SystemDecorations _systemDecorations = SystemDecorations.Full;
private bool _canResize = true;
private const int MaxWindowDimension = 100000;
private (Size minSize, Size maxSize) _scaledMinMaxSize =
(new Size(1, 1), new Size(double.PositiveInfinity, double.PositiveInfinity));
private (PixelSize minSize, PixelSize maxSize) _minMaxSize = (new PixelSize(1, 1),
new PixelSize(MaxWindowDimension, MaxWindowDimension));
private double _scaling = 1;
private void ScheduleInput(RawInputEventArgs args, ref XEvent xev)
{
_x11.LastActivityTimestamp = xev.ButtonEvent.time;
ScheduleInput(args);
}
private void DispatchInput(RawInputEventArgs args)
{
if (_inputRoot is null)
return;
if (_disabled && args is RawPointerEventArgs pargs && pargs.Type == RawPointerEventType.Move)
return;
Input?.Invoke(args);
if (!args.Handled && args is RawKeyEventArgsWithText { Text: { Length: > 0 } text })
Input?.Invoke(new RawTextInputEventArgs(_keyboard, args.Timestamp, _inputRoot, text));
}
public void ScheduleXI2Input(RawInputEventArgs args)
{
if (args is RawPointerEventArgs pargs)
{
if ((pargs.Type == RawPointerEventType.TouchBegin
|| pargs.Type == RawPointerEventType.TouchUpdate
|| pargs.Type == RawPointerEventType.LeftButtonDown
|| pargs.Type == RawPointerEventType.RightButtonDown
|| pargs.Type == RawPointerEventType.MiddleButtonDown
|| pargs.Type == RawPointerEventType.NonClientLeftButtonDown)
&& ActivateTransientChildIfNeeded())
return;
if (pargs.Type == RawPointerEventType.TouchEnd
&& ActivateTransientChildIfNeeded())
pargs.Type = RawPointerEventType.TouchCancel;
}
ScheduleInput(args);
}
private void ScheduleInput(RawInputEventArgs args)
{
if (args is RawPointerEventArgs mouse)
mouse.Position = mouse.Position / RenderScaling;
if (args is RawDragEvent drag)
drag.Location = drag.Location / RenderScaling;
_rawEventGrouper?.HandleEvent(args);
}
private void MouseEvent(RawPointerEventType type, ref XEvent ev, XModifierMask mods)
{
if (_inputRoot is null)
return;
var mev = new RawPointerEventArgs(
_mouse, (ulong)ev.ButtonEvent.time.ToInt64(), _inputRoot,
type, new Point(ev.ButtonEvent.x, ev.ButtonEvent.y), TranslateModifiers(mods));
ScheduleInput(mev, ref ev);
}
private void EnqueuePaint()
{
if (!_triggeredExpose)
{
_triggeredExpose = true;
Dispatcher.UIThread.Post(() =>
{
_triggeredExpose = false;
DoPaint();
}, DispatcherPriority.UiThreadRender);
}
}
private void DoPaint()
{
Paint?.Invoke(new Rect());
if (_xSyncCounter != IntPtr.Zero && _xSyncState == XSyncState.WaitPaint)
{
_xSyncState = XSyncState.None;
XSyncSetCounter(_x11.Display, _xSyncCounter, _xSyncValue);
}
}
public void Invalidate(Rect rect)
{
}
public IInputRoot InputRoot
=> _inputRoot ?? throw new InvalidOperationException($"{nameof(SetInputRoot)} must have been called");
public void SetInputRoot(IInputRoot inputRoot)
{
_inputRoot = inputRoot;
}
public void Dispose()
{
Cleanup(false);
}
public virtual object? TryGetFeature(Type featureType)
{
if (featureType == typeof(ITopLevelNativeMenuExporter))
{
return _nativeMenuExporter;
}
if (featureType == typeof(IStorageProvider))
{
return _storageProvider;
}
if (featureType == typeof(ITextInputMethodImpl))
{
return _ime;
}
if (featureType == typeof(INativeControlHostImpl))
{
return _nativeControlHost;
}
if (featureType == typeof(IClipboard))
{
return AvaloniaLocator.Current.GetRequiredService<IClipboard>();
}
if (featureType == typeof(ILauncher))
{
return new BclLauncher();
}
if (featureType == typeof(IX11OptionsToplevelImplFeature))
{
return this;
}
if (featureType == typeof(IScreenImpl))
{
return _platform.Screens;
}
return null;
}
private void Cleanup(bool fromDestroyNotification)
{
// Prevent reentrancy
if(_cleaningUp)
return;
_cleaningUp = true;
// Before doing anything else notify the TopLevel that ITopLevelImpl is no longer valid
if (_handle != IntPtr.Zero)
Closed?.Invoke();
if (_nativeMenuExporter is IDisposable disposable)
disposable.Dispose();
if (_rawEventGrouper != null)
{
_rawEventGrouper.Dispose();
_rawEventGrouper = null;
}
if (_transparencyHelper != null)
{
_transparencyHelper.Dispose();
_transparencyHelper = null;
}
if (_imeControl != null)
{
_imeControl.Dispose();
_imeControl = null;
_ime = null;
}
if (_xic != IntPtr.Zero)
{
XDestroyIC(_xic);
_xic = IntPtr.Zero;
}
if (_xSyncCounter != IntPtr.Zero)