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[mutter/wip/xinput2: 21/49] Add XInput2 input devices implementation

commit 884e13474b99f84fda7ebfe57c503d6337a75fff
Author: Carlos Garnacho <carlosg gnome org>
Date:   Sun Jun 12 19:09:16 2011 +0200

    Add XInput2 input devices implementation

 configure.in           |    2 +
 src/Makefile.am        |    6 +
 src/core/devices-xi2.c |  307 ++++++++++++++++++++++++++++++++++++++++++++++++
 src/core/devices-xi2.h |   87 ++++++++++++++
 4 files changed, 402 insertions(+), 0 deletions(-)
---
diff --git a/configure.in b/configure.in
index 60c0d73..10590d9 100644
--- a/configure.in
+++ b/configure.in
@@ -263,6 +263,8 @@ if test x$have_xinput2 = xyes; then
   AC_DEFINE(HAVE_XINPUT2, , [Building with XInput2 support])
 fi
 
+AM_CONDITIONAL(HAVE_XINPUT2, test "$have_xinput2" = "yes")
+
 PKG_CHECK_MODULES(MUTTER, $MUTTER_PC_MODULES)
 
 AC_PATH_XTRA
diff --git a/src/Makefile.am b/src/Makefile.am
index a8884ec..c1c303c 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -168,6 +168,12 @@ libmutter_la_SOURCES =				\
 	ui/preview-widget.c			\
 	$(mutter_built_sources)
 
+if HAVE_XINPUT2
+libmutter_la_SOURCES += 			\
+	core/devices-xi2.c			\
+	core/devices-xi2.h
+endif
+
 libmutter_la_LDFLAGS = -no-undefined
 libmutter_la_LIBADD  = $(MUTTER_LIBS)
 
diff --git a/src/core/devices-xi2.c b/src/core/devices-xi2.c
new file mode 100644
index 0000000..00c8ffc
--- /dev/null
+++ b/src/core/devices-xi2.c
@@ -0,0 +1,307 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+/* XInput2 devices implementation */
+
+/*
+ * Copyright (C) 2011 Carlos Garnacho
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
+
+#include <config.h>
+#include "devices-xi2.h"
+#include "display-private.h"
+#include "screen-private.h"
+#include <X11/extensions/XInput2.h>
+
+/* Common functions */
+static void
+meta_device_xi2_common_allow_events (MetaDevice *device,
+                                     int         mode,
+                                     Time        time)
+{
+  MetaDisplay *display;
+  gint device_id;
+
+  display = meta_device_get_display (device);
+  device_id = meta_device_get_id (device);
+
+  switch (mode)
+    {
+    case AsyncPointer:
+    case AsyncKeyboard:
+      mode = XIAsyncDevice;
+      break;
+    case SyncPointer:
+    case SyncKeyboard:
+      mode = XISyncDevice;
+      break;
+    case ReplayPointer:
+    case ReplayKeyboard:
+      mode = XIReplayDevice;
+      break;
+    case AsyncBoth:
+      mode = XIAsyncPair;
+      break;
+    case SyncBoth:
+      mode = XISyncPair;
+      break;
+    }
+
+  XIAllowEvents (display->xdisplay, device_id, mode, time);
+}
+
+static guchar *
+translate_event_mask (guint  evmask,
+                      gint  *len)
+{
+  guchar *mask;
+
+  *len = XIMaskLen (XI_LASTEVENT);
+  mask = g_new0 (guchar, *len);
+
+  if (evmask & KeyPressMask)
+    XISetMask (mask, XI_KeyPress);
+  if (evmask & KeyReleaseMask)
+    XISetMask (mask, XI_KeyRelease);
+  if (evmask & ButtonPressMask)
+    XISetMask (mask, XI_ButtonPress);
+  if (evmask & ButtonReleaseMask)
+    XISetMask (mask, XI_ButtonRelease);
+  if (evmask & EnterWindowMask)
+    XISetMask (mask, XI_Enter);
+  if (evmask & LeaveWindowMask)
+    XISetMask (mask, XI_Leave);
+
+  /* No motion hints in XI2 at the moment... */
+  if (evmask & PointerMotionMask ||
+      evmask & PointerMotionHintMask)
+    XISetMask (mask, XI_Motion);
+
+  if (evmask & FocusChangeMask)
+    {
+      XISetMask (mask, XI_FocusIn);
+      XISetMask (mask, XI_FocusOut);
+    }
+
+  return mask;
+}
+
+static gboolean
+meta_device_xi2_common_grab (MetaDevice *device,
+                             Window      xwindow,
+                             guint       evmask,
+                             MetaCursor  cursor,
+                             gboolean    owner_events,
+                             gboolean    sync,
+                             Time        time)
+{
+  MetaDisplay *display;
+  XIEventMask mask;
+  gint device_id, retval;
+  Cursor xcursor;
+
+  display = meta_device_get_display (device);
+  device_id = meta_device_get_id (device);
+  xcursor = meta_display_create_x_cursor (display, cursor);
+
+  mask.deviceid = device_id;
+  mask.mask = translate_event_mask (evmask, &mask.mask_len);
+
+  retval = XIGrabDevice (display->xdisplay,
+                         device_id, xwindow,
+                         time, xcursor,
+                         (sync) ? GrabModeSync : GrabModeAsync,
+                         (sync) ? GrabModeSync : GrabModeAsync,
+                         owner_events, &mask);
+
+  if (xcursor != None)
+    XFreeCursor (display->xdisplay, xcursor);
+
+  return (retval == Success);
+}
+
+static void
+meta_device_xi2_common_ungrab (MetaDevice *device,
+                               Time        time)
+{
+  MetaDisplay *display;
+  gint device_id;
+
+  display = meta_device_get_display (device);
+  device_id = meta_device_get_id (device);
+
+  XIUngrabDevice (display->xdisplay, device_id, time);
+}
+
+/* Pointer */
+
+G_DEFINE_TYPE (MetaDevicePointerXI2,
+               meta_device_pointer_xi2,
+               META_TYPE_DEVICE_POINTER)
+
+static void
+meta_device_pointer_xi2_warp (MetaDevicePointer *pointer,
+                              MetaScreen        *screen,
+                              gint               x,
+                              gint               y)
+{
+  MetaDisplay *display;
+  int device_id;
+
+  display = meta_device_get_display (META_DEVICE (pointer));
+  device_id = meta_device_get_id (META_DEVICE (pointer));
+
+  XIWarpPointer (display->xdisplay,
+                 device_id,
+                 None, screen->xroot,
+                 0, 0, 0, 0, x, y);
+}
+
+static void
+meta_device_pointer_xi2_set_window_cursor (MetaDevicePointer *pointer,
+                                           Window             xwindow,
+                                           MetaCursor         cursor)
+{
+  MetaDisplay *display;
+  Cursor xcursor;
+  int device_id;
+
+  display = meta_device_get_display (META_DEVICE (pointer));
+  device_id = meta_device_get_id (META_DEVICE (pointer));
+  xcursor = meta_display_create_x_cursor (display, cursor);
+
+  if (xcursor != None)
+    {
+      XIDefineCursor (display->xdisplay, device_id, xwindow, xcursor);
+      XFreeCursor (display->xdisplay, xcursor);
+    }
+  else
+    XIUndefineCursor (display->xdisplay, device_id, xwindow);
+}
+
+static void
+meta_device_pointer_xi2_query_position (MetaDevicePointer *pointer,
+                                        Window             xwindow,
+                                        Window            *root_ret,
+                                        Window            *child_ret,
+                                        gint              *root_x_ret,
+                                        gint              *root_y_ret,
+                                        gint              *x_ret,
+                                        gint              *y_ret,
+                                        guint             *mask_ret)
+{
+  MetaDisplay *display;
+  XIModifierState mods;
+  XIGroupState group_unused;
+  XIButtonState buttons;
+  gdouble root_x, root_y, x, y;
+  int device_id;
+
+  display = meta_device_get_display (META_DEVICE (pointer));
+  device_id = meta_device_get_id (META_DEVICE (pointer));
+
+  XIQueryPointer (display->xdisplay,
+                  device_id, xwindow,
+                  root_ret, child_ret,
+                  &root_x, &root_y, &x, &y,
+                  &buttons, &mods,
+                  &group_unused);
+  if (mask_ret)
+    {
+      *mask_ret = mods.effective;
+
+      if (XIMaskIsSet (buttons.mask, 1))
+        *mask_ret |= Button1Mask;
+      else if (XIMaskIsSet (buttons.mask, 2))
+        *mask_ret |= Button2Mask;
+      else if (XIMaskIsSet (buttons.mask, 3))
+        *mask_ret |= Button3Mask;
+    }
+
+  if (root_x_ret)
+    *root_x_ret = (int) root_x;
+
+  if (root_y_ret)
+    *root_y_ret = (int) root_y;
+
+  if (x_ret)
+    *x_ret = (int) x;
+
+  if (y_ret)
+    *y_ret = (int) y;
+}
+
+static void
+meta_device_pointer_xi2_class_init (MetaDevicePointerXI2Class *klass)
+{
+  MetaDevicePointerClass *pointer_class = META_DEVICE_POINTER_CLASS (klass);
+  MetaDeviceClass *device_class = META_DEVICE_CLASS (klass);
+
+  device_class->allow_events = meta_device_xi2_common_allow_events;
+  device_class->grab = meta_device_xi2_common_grab;
+  device_class->ungrab = meta_device_xi2_common_ungrab;
+
+  pointer_class->warp = meta_device_pointer_xi2_warp;
+  pointer_class->set_window_cursor = meta_device_pointer_xi2_set_window_cursor;
+  pointer_class->query_position = meta_device_pointer_xi2_query_position;
+}
+
+static void
+meta_device_pointer_xi2_init (MetaDevicePointerXI2 *pointer)
+{
+}
+
+MetaDevice *
+meta_device_pointer_xi2_new (MetaDisplay *display,
+                             gint         device_id)
+{
+  return g_object_new (META_TYPE_DEVICE_POINTER_XI2,
+                       "device-id", device_id,
+                       "display", display,
+                       NULL);
+}
+
+/* Keyboard */
+
+G_DEFINE_TYPE (MetaDeviceKeyboardXI2,
+               meta_device_keyboard_xi2,
+               META_TYPE_DEVICE_KEYBOARD)
+
+static void
+meta_device_keyboard_xi2_class_init (MetaDeviceKeyboardXI2Class *klass)
+{
+  MetaDeviceClass *device_class = META_DEVICE_CLASS (klass);
+
+  device_class->allow_events = meta_device_xi2_common_allow_events;
+  device_class->grab = meta_device_xi2_common_grab;
+  device_class->ungrab = meta_device_xi2_common_ungrab;
+}
+
+static void
+meta_device_keyboard_xi2_init (MetaDeviceKeyboardXI2 *keyboard)
+{
+}
+
+MetaDevice *
+meta_device_keyboard_xi2_new (MetaDisplay *display,
+                              gint         device_id)
+{
+  return g_object_new (META_TYPE_DEVICE_KEYBOARD_XI2,
+                       "device-id", device_id,
+                       "display", display,
+                       NULL);
+}
diff --git a/src/core/devices-xi2.h b/src/core/devices-xi2.h
new file mode 100644
index 0000000..bc9fbdc
--- /dev/null
+++ b/src/core/devices-xi2.h
@@ -0,0 +1,87 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+/**
+ * \file devices-xi2.h  XInput2 input devices implementation
+ *
+ * Input devices.
+ * This file contains the XInput2 implementation of input devices.
+ */
+
+/*
+ * Copyright (C) 2011 Carlos Garnacho
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
+
+#ifndef META_DEVICES_XI2_H
+#define META_DEVICES_XI2_H
+
+#include "device-pointer.h"
+#include "device-keyboard.h"
+
+/* Pointer */
+#define META_TYPE_DEVICE_POINTER_XI2            (meta_device_pointer_xi2_get_type ())
+#define META_DEVICE_POINTER_XI2(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), META_TYPE_DEVICE_POINTER_XI2, MetaDevicePointerXI2))
+#define META_DEVICE_POINTER_XI2_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass),  META_TYPE_DEVICE_POINTER_XI2, MetaDevicePointerXI2Class))
+#define META_IS_DEVICE_POINTER_XI2(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), META_TYPE_DEVICE_POINTER_XI2))
+#define META_IS_DEVICE_POINTER_XI2_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass),  META_TYPE_DEVICE_POINTER_XI2))
+#define META_DEVICE_POINTER_XI2_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),  META_TYPE_DEVICE_POINTER_XI2, MetaDevicePointerXI2Class))
+
+typedef struct _MetaDevicePointerXI2 MetaDevicePointerXI2;
+typedef struct _MetaDevicePointerXI2Class MetaDevicePointerXI2Class;
+
+struct _MetaDevicePointerXI2
+{
+  MetaDevicePointer parent_instance;
+};
+
+struct _MetaDevicePointerXI2Class
+{
+  MetaDevicePointerClass parent_class;
+};
+
+GType       meta_device_pointer_xi2_get_type (void) G_GNUC_CONST;
+
+MetaDevice *meta_device_pointer_xi2_new      (MetaDisplay *display,
+                                              gint         device_id);
+
+/* Keyboard */
+#define META_TYPE_DEVICE_KEYBOARD_XI2            (meta_device_keyboard_xi2_get_type ())
+#define META_DEVICE_KEYBOARD_XI2(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), META_TYPE_DEVICE_KEYBOARD_XI2, MetaDeviceKeyboardXI2))
+#define META_DEVICE_KEYBOARD_XI2_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass),  META_TYPE_DEVICE_KEYBOARD_XI2, MetaDeviceKeyboardXI2Class))
+#define META_IS_DEVICE_KEYBOARD_XI2(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), META_TYPE_DEVICE_KEYBOARD_XI2))
+#define META_IS_DEVICE_KEYBOARD_XI2_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass),  META_TYPE_DEVICE_KEYBOARD_XI2))
+#define META_DEVICE_KEYBOARD_XI2_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),  META_TYPE_DEVICE_KEYBOARD_XI2, MetaDeviceKeyboardXI2Class))
+
+typedef struct _MetaDeviceKeyboardXI2 MetaDeviceKeyboardXI2;
+typedef struct _MetaDeviceKeyboardXI2Class MetaDeviceKeyboardXI2Class;
+
+struct _MetaDeviceKeyboardXI2
+{
+  MetaDeviceKeyboard parent_instance;
+};
+
+struct _MetaDeviceKeyboardXI2Class
+{
+  MetaDeviceKeyboardClass parent_class;
+};
+
+GType       meta_device_keyboard_xi2_get_type (void) G_GNUC_CONST;
+
+MetaDevice *meta_device_keyboard_xi2_new      (MetaDisplay *display,
+                                               gint         device_id);
+
+#endif /* META_DEVICES_XI2_H */
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