e6913d1471
Intended to replace various manual monitor transform enum math here and there. Tests added as well, to test some hand picked transforms. https://gitlab.gnome.org/GNOME/mutter/merge_requests/1064
56 lines
1.8 KiB
C
56 lines
1.8 KiB
C
/*
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* Copyright (C) 2018 Robert Mader
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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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#include "config.h"
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#include "backends/meta-monitor-transform.h"
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MetaMonitorTransform
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meta_monitor_transform_invert (MetaMonitorTransform transform)
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{
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switch (transform)
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{
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case META_MONITOR_TRANSFORM_90:
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return META_MONITOR_TRANSFORM_270;
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case META_MONITOR_TRANSFORM_270:
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return META_MONITOR_TRANSFORM_90;
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case META_MONITOR_TRANSFORM_NORMAL:
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case META_MONITOR_TRANSFORM_180:
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case META_MONITOR_TRANSFORM_FLIPPED:
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case META_MONITOR_TRANSFORM_FLIPPED_90:
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case META_MONITOR_TRANSFORM_FLIPPED_180:
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case META_MONITOR_TRANSFORM_FLIPPED_270:
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return transform;
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}
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g_assert_not_reached ();
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return 0;
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}
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MetaMonitorTransform
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meta_monitor_transform_transform (MetaMonitorTransform transform,
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MetaMonitorTransform other)
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{
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MetaMonitorTransform new_transform;
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new_transform = (transform + other) % META_MONITOR_TRANSFORM_FLIPPED;
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if (meta_monitor_transform_is_flipped (transform) !=
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meta_monitor_transform_is_flipped (other))
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new_transform += META_MONITOR_TRANSFORM_FLIPPED;
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return new_transform;
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}
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