mirror of
https://github.com/brl/mutter.git
synced 2024-11-24 09:00:42 -05:00
84 lines
3.0 KiB
C
84 lines
3.0 KiB
C
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
|
|
|
|
/*
|
|
* Copyright (C) 2015 Red Hat
|
|
*
|
|
* 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.
|
|
*
|
|
* Written by:
|
|
* Jonas Ådahl <jadahl@gmail.com>
|
|
*/
|
|
|
|
/**
|
|
* SECTION:meta-pointer-constraint
|
|
* @title: MetaPointerConstraint
|
|
* @short_description: Pointer client constraints.
|
|
*
|
|
* A MetaPointerConstraint can be used to implement any kind of pointer
|
|
* constraint as requested by a client, such as cursor lock.
|
|
*
|
|
* Examples of pointer constraints are "pointer confinement" and "pointer
|
|
* locking" (as defined in the wayland pointer constraint protocol extension),
|
|
* which restrict movement in relation to a given client.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include "backends/meta-pointer-constraint.h"
|
|
|
|
#include <glib-object.h>
|
|
|
|
G_DEFINE_TYPE (MetaPointerConstraint, meta_pointer_constraint, G_TYPE_OBJECT);
|
|
|
|
static void
|
|
meta_pointer_constraint_init (MetaPointerConstraint *constraint)
|
|
{
|
|
}
|
|
|
|
static void
|
|
meta_pointer_constraint_class_init (MetaPointerConstraintClass *klass)
|
|
{
|
|
}
|
|
|
|
/**
|
|
* meta_pointer_constraint_constrain:
|
|
* @constraint: a #MetaPointerConstraint.
|
|
* @device; the device of the pointer.
|
|
* @time: the timestamp (in ms) of the event.
|
|
* @prev_x: X-coordinate of the previous pointer position.
|
|
* @prev_y: Y-coordinate of the previous pointer position.
|
|
* @x: The modifiable X-coordinate to which the pointer would like to go to.
|
|
* @y: The modifiable Y-coordinate to which the pointer would like to go to.
|
|
*
|
|
* Constrains the pointer movement from point (@prev_x, @prev_y) to (@x, @y),
|
|
* if needed.
|
|
*/
|
|
void
|
|
meta_pointer_constraint_constrain (MetaPointerConstraint *constraint,
|
|
ClutterInputDevice *device,
|
|
guint32 time,
|
|
float prev_x,
|
|
float prev_y,
|
|
float *x,
|
|
float *y)
|
|
{
|
|
META_POINTER_CONSTRAINT_GET_CLASS (constraint)->constrain (constraint,
|
|
device,
|
|
time,
|
|
prev_x, prev_y,
|
|
x, y);
|
|
}
|