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07d24fe502
The small catch is that MtkRegion (and pixman regions) "optimize away" 0-size rectangles, so a 0-sized region will always be seen as having a 0,0 origin. We don't want that, so transfer the origin separately from the region. While at it, make the Wayland pointer lock use one such 0-size region, to avoid the 1x1px wiggle room that it currently has (accounting for subpixel motion). Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3420>
79 lines
3.3 KiB
C
79 lines
3.3 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, see <http://www.gnu.org/licenses/>.
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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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#pragma once
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#include <glib-object.h>
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#include "clutter/clutter.h"
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G_BEGIN_DECLS
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#define META_TYPE_POINTER_CONSTRAINT (meta_pointer_constraint_get_type ())
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G_DECLARE_FINAL_TYPE (MetaPointerConstraint, meta_pointer_constraint,
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META, POINTER_CONSTRAINT, GObject);
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MetaPointerConstraint * meta_pointer_constraint_new (const MtkRegion *region,
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graphene_point_t origin,
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double min_edge_distance);
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MtkRegion * meta_pointer_constraint_get_region (MetaPointerConstraint *constraint,
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graphene_point_t *origin);
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double meta_pointer_constraint_get_min_edge_distance (MetaPointerConstraint *constraint);
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#define META_TYPE_POINTER_CONSTRAINT_IMPL (meta_pointer_constraint_impl_get_type ())
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G_DECLARE_DERIVABLE_TYPE (MetaPointerConstraintImpl, meta_pointer_constraint_impl,
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META, POINTER_CONSTRAINT_IMPL, GObject);
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/**
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* MetaPointerConstraintImplClass:
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* @constrain: the virtual function pointer for
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* meta_pointer_constraint_impl_constrain().
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*/
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struct _MetaPointerConstraintImplClass
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{
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GObjectClass parent_class;
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void (* constrain) (MetaPointerConstraintImpl *constraint_impl,
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ClutterInputDevice *device,
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uint32_t 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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void (* ensure_constrained) (MetaPointerConstraintImpl *constraint_impl,
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ClutterInputDevice *device);
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};
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void meta_pointer_constraint_impl_constrain (MetaPointerConstraintImpl *constraint_impl,
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ClutterInputDevice *device,
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uint32_t 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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void meta_pointer_constraint_impl_ensure_constrained (MetaPointerConstraintImpl *constraint_impl,
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ClutterInputDevice *device);
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G_END_DECLS
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