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X11GLNative.cs
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X11GLNative.cs
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#region License
//
// The Open Toolkit Library License
//
// Copyright (c) 2006 - 2009 the Open Toolkit library.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do
// so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//
#endregion
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
#if !MINIMAL
using System.Drawing;
#endif
using System.Reflection;
using System.Runtime.InteropServices;
using System.Text;
using OpenTK.Graphics;
using OpenTK.Input;
namespace OpenTK.Platform.X11
{
/// \internal
/// <summary>
/// Drives GameWindow on X11.
/// This class supports OpenTK, and is not intended for use by OpenTK programs.
/// </summary>
internal sealed class X11GLNative : NativeWindowBase
{
// TODO: Disable screensaver.
// TODO: What happens if we can't disable decorations through motif?
// TODO: Mouse/keyboard grabbing/wrapping.
#region Fields
const int _min_width = 30, _min_height = 30;
X11WindowInfo window = new X11WindowInfo();
// Window manager hints for fullscreen windows.
// Not used right now (the code is written, but is not 64bit-correct), but could be useful for older WMs which
// are not ICCM compliant, but may support MOTIF hints.
const string MOTIF_WM_ATOM = "_MOTIF_WM_HINTS";
const string KDE_WM_ATOM = "KWM_WIN_DECORATION";
const string KDE_NET_WM_ATOM = "_KDE_NET_WM_WINDOW_TYPE";
const string ICCM_WM_ATOM = "_NET_WM_WINDOW_TYPE";
const string ICON_NET_ATOM = "_NET_WM_ICON";
// The Atom class from Mono might be useful to avoid calling XInternAtom by hand (somewhat error prone).
IntPtr _atom_wm_destroy;
IntPtr _atom_net_wm_state;
IntPtr _atom_net_wm_state_minimized;
IntPtr _atom_net_wm_state_fullscreen;
IntPtr _atom_net_wm_state_maximized_horizontal;
IntPtr _atom_net_wm_state_maximized_vertical;
IntPtr _atom_net_wm_allowed_actions;
IntPtr _atom_net_wm_action_resize;
IntPtr _atom_net_wm_action_maximize_horizontally;
IntPtr _atom_net_wm_action_maximize_vertically;
IntPtr _atom_net_wm_icon;
IntPtr _atom_net_frame_extents;
IntPtr _atom_wm_class;
readonly IntPtr _atom_xa_cardinal = new IntPtr(6);
//IntPtr _atom_motif_wm_hints;
//IntPtr _atom_kde_wm_hints;
//IntPtr _atom_kde_net_wm_hints;
static readonly IntPtr _atom_remove = (IntPtr)0;
static readonly IntPtr _atom_add = (IntPtr)1;
static readonly IntPtr _atom_toggle = (IntPtr)2;
// Used by OpenTK to detect mouse warp events
Rectangle bounds, client_rectangle;
int border_left, border_right, border_top, border_bottom;
Icon icon;
bool has_focus;
bool visible;
// Used for event loop.
XEvent e = new XEvent();
bool disposed;
bool exists;
bool isExiting;
bool _decorations_hidden = false;
// Store previous border and bounds
// when switching from WindowState.Normal
// to a different state. When switching
// back, reset window to these.s
WindowBorder _previous_window_border;
Size _previous_window_size;
MouseCursor cursor = MouseCursor.Default;
IntPtr cursorHandle;
bool cursor_visible = true;
// Keyboard input
readonly byte[] ascii = new byte[16];
readonly char[] chars = new char[16];
readonly IntPtr EmptyCursor;
readonly bool xi2_supported;
readonly int xi2_opcode;
readonly int xi2_version;
#endregion
#region Constructors
public X11GLNative(int x, int y, int width, int height, string title,
GraphicsMode mode,GameWindowFlags options, DisplayDevice device)
: this()
{
if (width <= 0)
throw new ArgumentOutOfRangeException("width", "Must be higher than zero.");
if (height <= 0)
throw new ArgumentOutOfRangeException("height", "Must be higher than zero.");
XVisualInfo info = new XVisualInfo();
Debug.Indent();
using (new XLock(window.Display))
{
if (!mode.Index.HasValue)
{
mode = new X11GraphicsMode().SelectGraphicsMode(
mode.ColorFormat, mode.Depth, mode.Stencil, mode.Samples,
mode.AccumulatorFormat, mode.Buffers, mode.Stereo);
}
info.VisualID = mode.Index.Value;
int dummy;
window.VisualInfo = (XVisualInfo)Marshal.PtrToStructure(
Functions.XGetVisualInfo(window.Display, XVisualInfoMask.ID, ref info, out dummy), typeof(XVisualInfo));
// Create a window on this display using the visual above
Debug.Write("Opening render window... ");
XSetWindowAttributes attributes = new XSetWindowAttributes();
attributes.background_pixel = IntPtr.Zero;
attributes.border_pixel = IntPtr.Zero;
attributes.colormap = Functions.XCreateColormap(window.Display, window.RootWindow, window.VisualInfo.Visual, 0/*AllocNone*/);
window.EventMask = EventMask.StructureNotifyMask /*| EventMask.SubstructureNotifyMask*/ | EventMask.ExposureMask |
EventMask.KeyReleaseMask | EventMask.KeyPressMask | EventMask.KeymapStateMask |
EventMask.PointerMotionMask | EventMask.FocusChangeMask |
EventMask.ButtonPressMask | EventMask.ButtonReleaseMask |
EventMask.EnterWindowMask | EventMask.LeaveWindowMask |
EventMask.PropertyChangeMask;
attributes.event_mask = (IntPtr)window.EventMask;
uint mask = (uint)SetWindowValuemask.ColorMap | (uint)SetWindowValuemask.EventMask |
(uint)SetWindowValuemask.BackPixel | (uint)SetWindowValuemask.BorderPixel;
window.Handle = Functions.XCreateWindow(window.Display, window.RootWindow,
x, y, width, height, 0, window.VisualInfo.Depth/*(int)CreateWindowArgs.CopyFromParent*/,
(int)CreateWindowArgs.InputOutput, window.VisualInfo.Visual, (UIntPtr)mask, ref attributes);
if (window.Handle == IntPtr.Zero)
throw new ApplicationException("XCreateWindow call failed (returned 0).");
if (title != null)
Functions.XStoreName(window.Display, window.Handle, title);
}
// Set the window hints
SetWindowMinMax(_min_width, _min_height, -1, -1);
XSizeHints hints = new XSizeHints();
hints.base_width = width;
hints.base_height = height;
hints.flags = (IntPtr)(XSizeHintsFlags.PSize | XSizeHintsFlags.PPosition);
XClassHint class_hint = new XClassHint();
class_hint.Name = Assembly.GetEntryAssembly().GetName().Name.ToLower();
class_hint.Class = Assembly.GetEntryAssembly().GetName().Name;
using (new XLock(window.Display))
{
Functions.XSetWMNormalHints(window.Display, window.Handle, ref hints);
// Register for window destroy notification
Functions.XSetWMProtocols(window.Display, window.Handle, new IntPtr[] { _atom_wm_destroy }, 1);
// Set the window class hints
Functions.XSetClassHint(window.Display, window.Handle, ref class_hint);
}
// Set the initial window size to ensure X, Y, Width, Height and the rest
// return the correct values inside the constructor and the Load event.
XEvent e = new XEvent();
e.ConfigureEvent.x = x;
e.ConfigureEvent.y = y;
e.ConfigureEvent.width = width;
e.ConfigureEvent.height = height;
RefreshWindowBounds(ref e);
EmptyCursor = CreateEmptyCursor(window);
Debug.WriteLine(String.Format("X11GLNative window created successfully (id: {0}).", Handle));
Debug.Unindent();
// Request that auto-repeat is only set on devices that support it physically.
// This typically means that it's turned off for keyboards (which is what we want).
// We prefer this method over XAutoRepeatOff/On, because the latter needs to
// be reset before the program exits.
bool supported;
Functions.XkbSetDetectableAutoRepeat(window.Display, true, out supported);
// The XInput2 extension makes keyboard and mouse handling much easier.
// Check whether it is available.
xi2_supported = XI2Mouse.IsSupported(window.Display);
if (xi2_supported)
{
xi2_opcode = XI2Mouse.XIOpCode;
xi2_version = XI2Mouse.XIVersion;
}
exists = true;
}
/// <summary>
/// Constructs and initializes a new X11GLNative window.
/// Call CreateWindow to create the actual render window.
/// </summary>
public X11GLNative()
{
try
{
Debug.Print("Creating X11GLNative window.");
Debug.Indent();
// Open a display connection to the X server, and obtain the screen and root window.
window.Display = Functions.XOpenDisplay(IntPtr.Zero);
//window.Display = API.DefaultDisplay;
if (window.Display == IntPtr.Zero)
throw new Exception("Could not open connection to X");
using (new XLock(window.Display))
{
window.Screen = Functions.XDefaultScreen(window.Display); //API.DefaultScreen;
window.RootWindow = Functions.XRootWindow(window.Display, window.Screen); // API.RootWindow;
}
Debug.Print("Display: {0}, Screen {1}, Root window: {2}", window.Display, window.Screen,
window.RootWindow);
RegisterAtoms(window);
}
finally
{
Debug.Unindent();
}
}
#endregion
#region Private Members
#region private void RegisterAtoms()
/// <summary>
/// Not used yet.
/// Registers the necessary atoms for GameWindow.
/// </summary>
private void RegisterAtoms(X11WindowInfo window)
{
using (new XLock(window.Display))
{
Debug.WriteLine("Registering atoms.");
_atom_wm_destroy = Functions.XInternAtom(window.Display, "WM_DELETE_WINDOW", true);
_atom_net_wm_state = Functions.XInternAtom(window.Display, "_NET_WM_STATE", false);
_atom_net_wm_state_minimized = Functions.XInternAtom(window.Display, "_NET_WM_STATE_MINIMIZED", false);
_atom_net_wm_state_fullscreen = Functions.XInternAtom(window.Display, "_NET_WM_STATE_FULLSCREEN", false);
_atom_net_wm_state_maximized_horizontal =
Functions.XInternAtom(window.Display, "_NET_WM_STATE_MAXIMIZED_HORZ", false);
_atom_net_wm_state_maximized_vertical =
Functions.XInternAtom(window.Display, "_NET_WM_STATE_MAXIMIZED_VERT", false);
_atom_net_wm_allowed_actions =
Functions.XInternAtom(window.Display, "_NET_WM_ALLOWED_ACTIONS", false);
_atom_net_wm_action_resize =
Functions.XInternAtom(window.Display, "_NET_WM_ACTION_RESIZE", false);
_atom_net_wm_action_maximize_horizontally =
Functions.XInternAtom(window.Display, "_NET_WM_ACTION_MAXIMIZE_HORZ", false);
_atom_net_wm_action_maximize_vertically =
Functions.XInternAtom(window.Display, "_NET_WM_ACTION_MAXIMIZE_VERT", false);
_atom_net_wm_icon =
Functions.XInternAtom(window.Display, "_NEW_WM_ICON", false);
_atom_net_frame_extents =
Functions.XInternAtom(window.Display, "_NET_FRAME_EXTENTS", false);
// string[] atom_names = new string[]
// {
// //"WM_TITLE",
// //"UTF8_STRING"
// };
// IntPtr[] atoms = new IntPtr[atom_names.Length];
// //Functions.XInternAtoms(window.Display, atom_names, atom_names.Length, false, atoms);
//
// int offset = 0;
// //WMTitle = atoms[offset++];
// //UTF8String = atoms[offset++];
}
}
#endregion
#region SetWindowMinMax
void SetWindowMinMax(int min_width, int min_height, int max_width, int max_height)
{
SetWindowMinMax((short)min_width, (short)min_height, (short)max_width, (short)max_height);
}
void SetWindowMinMax(short min_width, short min_height, short max_width, short max_height)
{
IntPtr dummy;
XSizeHints hints = new XSizeHints();
using (new XLock(window.Display))
{
Functions.XGetWMNormalHints(window.Display, window.Handle, ref hints, out dummy);
}
if (min_width > 0 || min_height > 0)
{
hints.flags = (IntPtr)((int)hints.flags | (int)XSizeHintsFlags.PMinSize);
hints.min_width = min_width;
hints.min_height = min_height;
}
else
hints.flags = (IntPtr)((int)hints.flags & ~(int)XSizeHintsFlags.PMinSize);
if (max_width > 0 || max_height > 0)
{
hints.flags = (IntPtr)((int)hints.flags | (int)XSizeHintsFlags.PMaxSize);
hints.max_width = max_width;
hints.max_height = max_height;
}
else
hints.flags = (IntPtr)((int)hints.flags & ~(int)XSizeHintsFlags.PMaxSize);
if (hints.flags != IntPtr.Zero)
{
// The Metacity team has decided that they won't care about this when clicking the maximize
// icon, will maximize the window to fill the screen/parent no matter what.
// http://bugzilla.ximian.com/show_bug.cgi?id=80021
using (new XLock(window.Display))
{
Functions.XSetWMNormalHints(window.Display, window.Handle, ref hints);
}
}
}
#endregion
#region IsWindowBorderResizable
bool IsWindowBorderResizable
{
get
{
IntPtr actual_atom;
int actual_format;
IntPtr nitems;
IntPtr bytes_after;
IntPtr prop = IntPtr.Zero;
IntPtr atom;
//XWindowAttributes attributes;
using (new XLock(window.Display))
{
Functions.XGetWindowProperty(window.Display, window.Handle,
_atom_net_wm_allowed_actions, IntPtr.Zero, new IntPtr(256), false,
IntPtr.Zero, out actual_atom, out actual_format, out nitems,
out bytes_after, ref prop);
if ((long)nitems > 0 && prop != IntPtr.Zero)
{
for (int i = 0; i < (long)nitems; i++)
{
atom = (IntPtr)Marshal.ReadIntPtr(prop, i * IntPtr.Size);
if (atom == _atom_net_wm_action_resize)
return true;
}
Functions.XFree(prop);
}
}
return false;
}
}
#endregion
#region bool IsWindowBorderHidden
bool IsWindowBorderHidden
{
get
{
//IntPtr actual_atom;
//int actual_format;
//IntPtr nitems;
//IntPtr bytes_after;
IntPtr prop = IntPtr.Zero;
//IntPtr atom;
//XWindowAttributes attributes;
using (new XLock(window.Display))
{
// Test if decorations have been disabled through Motif.
IntPtr motif_hints_atom = Functions.XInternAtom(this.window.Display, MOTIF_WM_ATOM, true);
if (motif_hints_atom != IntPtr.Zero)
{
// TODO: How to check if MotifWMHints decorations have been really disabled?
if (_decorations_hidden)
return true;
}
// Some WMs remove decorations when the transient_for hint is set. Most new ones do not (but those
// should obey the Motif hint). Anyway, if this hint is set, we say the decorations have been remove
// although there is a slight chance this is not the case.
IntPtr transient_for_parent;
Functions.XGetTransientForHint(window.Display, window.Handle, out transient_for_parent);
if (transient_for_parent != IntPtr.Zero)
return true;
return false;
}
}
}
#endregion
#region void DisableWindowDecorations()
void DisableWindowDecorations()
{
if (DisableMotifDecorations())
{
Debug.Print("Removed decorations through motif.");
_decorations_hidden = true;
}
using (new XLock(window.Display))
{
// Functions.XSetTransientForHint(this.window.Display, this.Handle, this.window.RootWindow);
// Some WMs remove decorations when this hint is set. Doesn't hurt to try.
Functions.XSetTransientForHint(this.window.Display, this.Handle, this.window.RootWindow);
if (_decorations_hidden)
{
Functions.XUnmapWindow(this.window.Display, this.Handle);
Functions.XMapWindow(this.window.Display, this.Handle);
}
}
}
#region bool DisableMotifDecorations()
bool DisableMotifDecorations()
{
using (new XLock(window.Display))
{
IntPtr atom = Functions.XInternAtom(this.window.Display, MOTIF_WM_ATOM, true);
if (atom != IntPtr.Zero)
{
//Functions.XGetWindowProperty(window.Display, window.Handle, atom, IntPtr.Zero, IntPtr.Zero, false,
MotifWmHints hints = new MotifWmHints();
hints.flags = (IntPtr)MotifFlags.Decorations;
Functions.XChangeProperty(this.window.Display, this.Handle, atom, atom, 32, PropertyMode.Replace,
ref hints, Marshal.SizeOf(hints) / IntPtr.Size);
return true;
}
return false;
}
}
#endregion
#region bool DisableGnomeDecorations()
bool DisableGnomeDecorations()
{
using (new XLock(window.Display))
{
IntPtr atom = Functions.XInternAtom(this.window.Display, Constants.XA_WIN_HINTS, true);
if (atom != IntPtr.Zero)
{
IntPtr hints = IntPtr.Zero;
Functions.XChangeProperty(this.window.Display, this.Handle, atom, atom, 32, PropertyMode.Replace,
ref hints, Marshal.SizeOf(hints) / IntPtr.Size);
return true;
}
return false;
}
}
#endregion
#endregion
#region void EnableWindowDecorations()
void EnableWindowDecorations()
{
if (EnableMotifDecorations())
{
Debug.Print("Activated decorations through motif.");
_decorations_hidden = false;
}
//if (EnableGnomeDecorations()) { Debug.Print("Activated decorations through gnome."); activated = true; }
using (new XLock(window.Display))
{
Functions.XSetTransientForHint(this.window.Display, this.Handle, IntPtr.Zero);
if (!_decorations_hidden)
{
Functions.XUnmapWindow(this.window.Display, this.Handle);
Functions.XMapWindow(this.window.Display, this.Handle);
}
}
}
#region bool EnableMotifDecorations()
bool EnableMotifDecorations()
{
using (new XLock(window.Display))
{
IntPtr atom = Functions.XInternAtom(this.window.Display, MOTIF_WM_ATOM, true);
if (atom != IntPtr.Zero)
{
//Functions.XDeleteProperty(this.window.Display, this.Handle, atom);
MotifWmHints hints = new MotifWmHints();
hints.flags = (IntPtr)MotifFlags.Decorations;
hints.decorations = (IntPtr)MotifDecorations.All;
Functions.XChangeProperty(this.window.Display, this.Handle, atom, atom, 32, PropertyMode.Replace,
ref hints, Marshal.SizeOf(hints) / IntPtr.Size);
return true;
}
return false;
}
}
#endregion
#region bool EnableGnomeDecorations()
bool EnableGnomeDecorations()
{
using (new XLock(window.Display))
{
// Restore window layer.
//XEvent xev = new XEvent();
//xev.ClientMessageEvent.window = this.window.Handle;
//xev.ClientMessageEvent.type = XEventName.ClientMessage;
//xev.ClientMessageEvent.message_type = Functions.XInternAtom(this.window.Display, Constants.XA_WIN_LAYER, false);
//xev.ClientMessageEvent.format = 32;
//xev.ClientMessageEvent.ptr1 = (IntPtr)WindowLayer.AboveDock;
//Functions.XSendEvent(this.window.Display, this.window.RootWindow, false, (IntPtr)EventMask.SubstructureNotifyMask, ref xev);
IntPtr atom = Functions.XInternAtom(this.window.Display, Constants.XA_WIN_HINTS, true);
if (atom != IntPtr.Zero)
{
Functions.XDeleteProperty(this.window.Display, this.Handle, atom);
return true;
}
return false;
}
}
#endregion
#endregion
#region DeleteIconPixmaps
static void DeleteIconPixmaps(IntPtr display, IntPtr window)
{
using (new XLock(display))
{
IntPtr wmHints_ptr = Functions.XGetWMHints(display, window);
if (wmHints_ptr != IntPtr.Zero)
{
XWMHints wmHints = (XWMHints)Marshal.PtrToStructure(wmHints_ptr, typeof(XWMHints));
XWMHintsFlags flags = (XWMHintsFlags)wmHints.flags.ToInt32();
if ((flags & XWMHintsFlags.IconPixmapHint) != 0)
{
wmHints.flags = new IntPtr((int)(flags & ~XWMHintsFlags.IconPixmapHint));
Functions.XFreePixmap(display, wmHints.icon_pixmap);
}
if ((flags & XWMHintsFlags.IconMaskHint) != 0)
{
wmHints.flags = new IntPtr((int)(flags & ~XWMHintsFlags.IconMaskHint));
Functions.XFreePixmap(display, wmHints.icon_mask);
}
Functions.XSetWMHints(display, window, ref wmHints);
Functions.XFree(wmHints_ptr);
}
}
}
#endregion
bool RefreshWindowBorders()
{
bool borders_changed = false;
if (IsWindowBorderHidden)
{
borders_changed =
border_left != 0 ||
border_right != 0 ||
border_top != 0 ||
border_bottom != 0;
border_left = 0;
border_right = 0;
border_top = 0;
border_bottom = 0;
}
else
{
IntPtr atom, nitems, bytes_after, prop = IntPtr.Zero;
int format;
using (new XLock(window.Display))
{
Functions.XGetWindowProperty(window.Display, window.Handle,
_atom_net_frame_extents, IntPtr.Zero, new IntPtr(16), false,
(IntPtr)Atom.XA_CARDINAL, out atom, out format, out nitems, out bytes_after, ref prop);
}
if ((prop != IntPtr.Zero))
{
if ((long)nitems == 4)
{
int new_border_left = Marshal.ReadIntPtr(prop, 0).ToInt32();
int new_border_right = Marshal.ReadIntPtr(prop, IntPtr.Size).ToInt32();
int new_border_top = Marshal.ReadIntPtr(prop, IntPtr.Size * 2).ToInt32();
int new_border_bottom = Marshal.ReadIntPtr(prop, IntPtr.Size * 3).ToInt32();
borders_changed =
new_border_left != border_left ||
new_border_right != border_right ||
new_border_top != border_top ||
new_border_bottom != border_bottom;
border_left = new_border_left;
border_right = new_border_right;
border_top = new_border_top;
border_bottom = new_border_bottom;
//Debug.WriteLine(border_left);
//Debug.WriteLine(border_right);
//Debug.WriteLine(border_top);
//Debug.WriteLine(border_bottom);
}
using (new XLock(window.Display))
{
Functions.XFree(prop);
}
}
}
return borders_changed;
}
void RefreshWindowBounds(ref XEvent e)
{
RefreshWindowBorders();
// For whatever reason, the x/y coordinates
// of a configure event are global to the
// root window when it is a send_event but
// local when it is a regular event.
// I don't know who designed this, but this is
// utter nonsense.
int x, y;
IntPtr unused;
if (!e.ConfigureEvent.send_event)
{
Functions.XTranslateCoordinates(window.Display,
window.Handle, window.RootWindow,
0, 0, out x, out y, out unused);
}
else
{
x = e.ConfigureEvent.x;
y = e.ConfigureEvent.y;
}
Point new_location = new Point(
x - border_left,
y - border_top);
if (Location != new_location)
{
bounds.Location = new_location;
OnMove(EventArgs.Empty);
}
// Note: width and height denote the internal (client) size.
// To get the external (window) size, we need to add the border size.
Size new_size = new Size(
e.ConfigureEvent.width + border_left + border_right,
e.ConfigureEvent.height + border_top + border_bottom);
if (Bounds.Size != new_size)
{
bounds.Size = new_size;
// X11 sets the client width/height to 0
// when the window is minimized. Many apps
// do not expect this and crash, so clamp
// minimum width/height to 1 instead.
client_rectangle.Size = new Size(
Math.Max(e.ConfigureEvent.width, 1),
Math.Max(e.ConfigureEvent.height, 1));
OnResize(EventArgs.Empty);
}
//Debug.Print("[X11] Window bounds changed: {0}", bounds);
}
static IntPtr CreateEmptyCursor(X11WindowInfo window)
{
IntPtr cursor = IntPtr.Zero;
using (new XLock(window.Display))
{
XColor black, dummy;
IntPtr cmap = Functions.XDefaultColormap(window.Display, window.Screen);
Functions.XAllocNamedColor(window.Display, cmap, "black", out black, out dummy);
IntPtr bmp_empty = Functions.XCreateBitmapFromData(window.Display,
window.Handle, new byte[,] { { 0 } });
cursor = Functions.XCreatePixmapCursor(window.Display,
bmp_empty, bmp_empty, ref black, ref black, 0, 0);
}
return cursor;
}
#endregion
#region INativeWindow Members
#region ProcessEvents
public override void ProcessEvents()
{
base.ProcessEvents();
// Process all pending events
while (Exists && window != null)
{
using (new XLock(window.Display))
{
if (!Functions.XCheckWindowEvent(window.Display, window.Handle, window.EventMask, ref e) &&
!Functions.XCheckTypedWindowEvent(window.Display, window.Handle, XEventName.ClientMessage, ref e))
break;
}
// Respond to the event e
switch (e.type)
{
case XEventName.MapNotify:
{
bool previous_visible = visible;
visible = true;
if (visible != previous_visible)
OnVisibleChanged(EventArgs.Empty);
}
return;
case XEventName.UnmapNotify:
{
bool previous_visible = visible;
visible = false;
if (visible != previous_visible)
OnVisibleChanged(EventArgs.Empty);
}
break;
case XEventName.CreateNotify:
// A child was was created - nothing to do
break;
case XEventName.ClientMessage:
if (!isExiting && e.ClientMessageEvent.ptr1 == _atom_wm_destroy)
{
Debug.WriteLine("Exit message received.");
CancelEventArgs ce = new CancelEventArgs();
OnClosing(ce);
if (!ce.Cancel)
{
isExiting = true;
Debug.WriteLine("Destroying window.");
using (new XLock(window.Display))
{
Functions.XDestroyWindow(window.Display, window.Handle);
}
break;
}
}
break;
case XEventName.DestroyNotify:
Debug.WriteLine("Window destroyed");
exists = false;
OnClosed(EventArgs.Empty);
return;
case XEventName.ConfigureNotify:
RefreshWindowBounds(ref e);
break;
case XEventName.KeyPress:
case XEventName.KeyRelease:
bool pressed = e.type == XEventName.KeyPress;
Key key;
if (X11KeyMap.TranslateKey(ref e.KeyEvent, out key))
{
if (pressed)
{
// Raise KeyDown event
bool is_repeat = KeyboardState[key];
OnKeyDown(key, is_repeat);
}
else
{
// Raise KeyUp event
OnKeyUp(key);
}
if (pressed)
{
// Translate XKeyPress to characters and
// raise KeyPress events
int status = 0;
status = Functions.XLookupString(
ref e.KeyEvent, ascii, ascii.Length, null, IntPtr.Zero);
Encoding.Default.GetChars(ascii, 0, status, chars, 0);
for (int i = 0; i < status; i++)
{
if (!Char.IsControl(chars[i]))
{
OnKeyPress(chars[i]);
}
}
}
}
break;
case XEventName.MotionNotify:
{
int x = e.MotionEvent.x;
int y = e.MotionEvent.y;
if (x != 0 || y != 0)
{
OnMouseMove(
MathHelper.Clamp(x, 0, Width),
MathHelper.Clamp(y, 0, Height));
}
break;
}
case XEventName.ButtonPress:
{
float dx, dy;
MouseButton button = X11KeyMap.TranslateButton(e.ButtonEvent.button, out dx, out dy);
if (button != MouseButton.LastButton)
{
OnMouseDown(button);
}
if (xi2_version >= 210)
{
// High resolution scroll events supported.
// This code is implemented in XI2Mouse.GetCursorState().
// Instead of reimplementing this functionality, just
// use the values from there.
MouseState state = Mouse.GetCursorState();
dx = state.Scroll.X - MouseState.Scroll.X;
dy = state.Scroll.Y - MouseState.Scroll.Y;
}
if (dx != 0 || dy != 0)
{
// High resolution scroll events not supported
// fallback to the old Button4-7 scroll buttons
OnMouseWheel(dx, dy);
}
}
break;
case XEventName.ButtonRelease:
{
float dx, dy;
MouseButton button = X11KeyMap.TranslateButton(e.ButtonEvent.button, out dx, out dy);
if (button != MouseButton.LastButton)
{
OnMouseUp(button);
}
}
break;
case XEventName.FocusIn:
{
bool previous_focus = has_focus;
has_focus = true;
if (has_focus != previous_focus)
OnFocusedChanged(EventArgs.Empty);
if (Focused && !CursorVisible)
{
GrabMouse();
}
}
break;
case XEventName.FocusOut:
{
bool previous_focus = has_focus;
has_focus = false;
if (has_focus != previous_focus)
OnFocusedChanged(EventArgs.Empty);
}
break;
case XEventName.LeaveNotify:
if (CursorVisible)
{
int x = MathHelper.Clamp(e.CrossingEvent.x, 0, Width);
int y = MathHelper.Clamp(e.CrossingEvent.y, 0, Height);
if (x != MouseState.X || y != MouseState.Y)
{
OnMouseMove(x, y);
}
OnMouseLeave(EventArgs.Empty);
}
break;
case XEventName.EnterNotify:
OnMouseEnter(EventArgs.Empty);
break;