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- // Copyright 2017 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #include "ash/utility/transformer_util.h"
- #include <cmath>
- #include "ui/display/display_transform.h"
- #include "ui/gfx/geometry/size_f.h"
- #include "ui/gfx/geometry/transform.h"
- namespace ash {
- namespace {
- display::Display::Rotation RotationBetween(
- display::Display::Rotation old_rotation,
- display::Display::Rotation new_rotation) {
- return static_cast<display::Display::Rotation>(
- display::Display::Rotation::ROTATE_0 +
- ((new_rotation - old_rotation) + 4) % 4);
- }
- } // namespace
- gfx::Transform CreateRotationTransform(display::Display::Rotation old_rotation,
- display::Display::Rotation new_rotation,
- const gfx::SizeF& size_to_rotate) {
- return display::CreateRotationTransform(
- RotationBetween(old_rotation, new_rotation), size_to_rotate);
- }
- } // namespace ash
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