fced59b33d
It is only used once in MetaWaylandSurface Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3501>
54 lines
1.9 KiB
C
54 lines
1.9 KiB
C
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
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/*
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* Utilities for region manipulation
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*
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* Copyright (C) 2010 Red Hat, Inc.
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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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#pragma once
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#include <glib.h>
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#include "backends/meta-backend-types.h"
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#include "clutter/clutter.h"
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#include "core/boxes-private.h"
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typedef struct _MetaRegionBuilder MetaRegionBuilder;
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#define META_REGION_BUILDER_MAX_LEVELS 16
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struct _MetaRegionBuilder {
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/* To merge regions in binary tree order, we need to keep track of
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* the regions that we've already merged together at different
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* levels of the tree. We fill in an array in the pattern:
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*
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* |a |
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* |b |a |
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* |c | |ab |
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* |d |c |ab |
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* |e | | |abcd|
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*/
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MtkRegion *levels[META_REGION_BUILDER_MAX_LEVELS];
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int n_levels;
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};
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void meta_region_builder_init (MetaRegionBuilder *builder);
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void meta_region_builder_add_rectangle (MetaRegionBuilder *builder,
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int x,
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int y,
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int width,
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int height);
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MtkRegion * meta_region_builder_finish (MetaRegionBuilder *builder);
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