File: wayland_display_util.cc

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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "components/exo/wayland/wayland_display_util.h"

#include "base/notreached.h"

namespace exo {
namespace wayland {

wl_output_transform OutputTransform(display::Display::Rotation rotation) {
  // Note: |rotation| describes the counter clockwise rotation that a
  // display's output is currently adjusted for, which is the inverse
  // of what we need to return.
  switch (rotation) {
    case display::Display::ROTATE_0:
      return WL_OUTPUT_TRANSFORM_NORMAL;
    case display::Display::ROTATE_90:
      return WL_OUTPUT_TRANSFORM_270;
    case display::Display::ROTATE_180:
      return WL_OUTPUT_TRANSFORM_180;
    case display::Display::ROTATE_270:
      return WL_OUTPUT_TRANSFORM_90;
  }
  NOTREACHED();
  return WL_OUTPUT_TRANSFORM_NORMAL;
}

}  // namespace wayland
}  // namespace exo