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// Copyright 2019 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 "ui/gfx/overlay_transform_utils.h"
#include "base/notreached.h"
#include "ui/gfx/geometry/rect_conversions.h"
namespace gfx {
gfx::Transform OverlayTransformToTransform(
gfx::OverlayTransform overlay_transform,
const gfx::SizeF& viewport_bounds) {
switch (overlay_transform) {
case gfx::OVERLAY_TRANSFORM_INVALID:
NOTREACHED();
return gfx::Transform();
case gfx::OVERLAY_TRANSFORM_NONE:
return gfx::Transform();
case gfx::OVERLAY_TRANSFORM_FLIP_HORIZONTAL:
return gfx::Transform(
SkMatrix::MakeAll(-1, 0, viewport_bounds.width(), 0, 1, 0, 0, 0, 1));
case gfx::OVERLAY_TRANSFORM_FLIP_VERTICAL:
return gfx::Transform(
SkMatrix::MakeAll(1, 0, 0, 0, -1, viewport_bounds.height(), 0, 0, 1));
case gfx::OVERLAY_TRANSFORM_ROTATE_90:
return gfx::Transform(
SkMatrix::MakeAll(0, -1, viewport_bounds.height(), 1, 0, 0, 0, 0, 1));
case gfx::OVERLAY_TRANSFORM_ROTATE_180:
return gfx::Transform(SkMatrix::MakeAll(-1, 0, viewport_bounds.width(), 0,
-1, viewport_bounds.height(), 0,
0, 1));
case gfx::OVERLAY_TRANSFORM_ROTATE_270:
return gfx::Transform(
SkMatrix::MakeAll(0, 1, 0, -1, 0, viewport_bounds.width(), 0, 0, 1));
}
NOTREACHED();
return gfx::Transform();
}
gfx::OverlayTransform InvertOverlayTransform(gfx::OverlayTransform transform) {
switch (transform) {
case gfx::OVERLAY_TRANSFORM_INVALID:
NOTREACHED();
return gfx::OVERLAY_TRANSFORM_NONE;
case gfx::OVERLAY_TRANSFORM_NONE:
return gfx::OVERLAY_TRANSFORM_NONE;
case gfx::OVERLAY_TRANSFORM_FLIP_HORIZONTAL:
return gfx::OVERLAY_TRANSFORM_FLIP_HORIZONTAL;
case gfx::OVERLAY_TRANSFORM_FLIP_VERTICAL:
return gfx::OVERLAY_TRANSFORM_FLIP_VERTICAL;
case gfx::OVERLAY_TRANSFORM_ROTATE_90:
return gfx::OVERLAY_TRANSFORM_ROTATE_270;
case gfx::OVERLAY_TRANSFORM_ROTATE_180:
return gfx::OVERLAY_TRANSFORM_ROTATE_180;
case gfx::OVERLAY_TRANSFORM_ROTATE_270:
return gfx::OVERLAY_TRANSFORM_ROTATE_90;
}
NOTREACHED();
return gfx::OVERLAY_TRANSFORM_NONE;
}
} // namespace gfx
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