495c89401a
The wp_pointer_constraints protocol is a protocol which enables clients to manipulate the behavior of the pointer cursor associated with a seat. Currently available constraints are locking the pointer to a static position, and confining the pointer to a given region. Currently locking is fully implemented, and confining is implemented for rectangular confinement regions. What else is lacking is less troublesome semantics for enabling the lock or confinement; currently the only requirement implemented is that the window that appears focused is the one that may aquire the lock. This means that a pointer could be 'stolen' by creating a new window that receives active focus, or when using focus-follows-mouse, a pointer passes a window that has requested a lock. This semantics can be changed and the protocol itself allows any semantics as seems fit. https://bugzilla.gnome.org/show_bug.cgi?id=744104
72 lines
2.2 KiB
C
72 lines
2.2 KiB
C
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
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/*
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* Copyright (C) 2015 Red Hat
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*
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* Written by:
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* Jonas Ådahl <jadahl@gmail.com>
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*/
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#include "config.h"
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#include "wayland/meta-pointer-lock-wayland.h"
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#include <glib-object.h>
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#include "backends/meta-pointer-constraint.h"
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struct _MetaPointerLockWayland
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{
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MetaPointerConstraint parent;
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};
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G_DEFINE_TYPE (MetaPointerLockWayland, meta_pointer_lock_wayland,
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META_TYPE_POINTER_CONSTRAINT);
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static void
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meta_pointer_lock_wayland_constrain (MetaPointerConstraint *constraint,
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ClutterInputDevice *device,
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guint32 time,
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float prev_x,
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float prev_y,
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float *x,
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float *y)
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{
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*x = prev_x;
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*y = prev_y;
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}
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MetaPointerConstraint *
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meta_pointer_lock_wayland_new (void)
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{
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return g_object_new (META_TYPE_POINTER_LOCK_WAYLAND, NULL);
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}
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static void
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meta_pointer_lock_wayland_init (MetaPointerLockWayland *lock_wayland)
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{
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}
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static void
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meta_pointer_lock_wayland_class_init (MetaPointerLockWaylandClass *klass)
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{
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MetaPointerConstraintClass *pointer_constraint_class =
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META_POINTER_CONSTRAINT_CLASS (klass);
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pointer_constraint_class->constrain = meta_pointer_lock_wayland_constrain;
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}
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