| // Copyright 2019 The Chromium Authors |
| // 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 { |
| |
| Transform OverlayTransformToTransform(OverlayTransform overlay_transform, |
| const SizeF& viewport_bounds) { |
| switch (overlay_transform) { |
| case OVERLAY_TRANSFORM_INVALID: |
| NOTREACHED(); |
| return Transform(); |
| case OVERLAY_TRANSFORM_NONE: |
| return Transform(); |
| case OVERLAY_TRANSFORM_FLIP_HORIZONTAL: |
| return Transform::Affine(-1, 0, 0, 1, viewport_bounds.width(), 0); |
| case OVERLAY_TRANSFORM_FLIP_VERTICAL: |
| return Transform::Affine(1, 0, 0, -1, 0, viewport_bounds.height()); |
| case OVERLAY_TRANSFORM_ROTATE_CLOCKWISE_90: |
| return Transform::Affine(0, 1, -1, 0, viewport_bounds.height(), 0); |
| case OVERLAY_TRANSFORM_ROTATE_CLOCKWISE_180: |
| return Transform::Affine(-1, 0, 0, -1, viewport_bounds.width(), |
| viewport_bounds.height()); |
| case OVERLAY_TRANSFORM_ROTATE_CLOCKWISE_270: |
| return Transform::Affine(0, -1, 1, 0, 0, viewport_bounds.width()); |
| } |
| |
| NOTREACHED(); |
| return Transform(); |
| } |
| |
| OverlayTransform InvertOverlayTransform(OverlayTransform transform) { |
| switch (transform) { |
| case OVERLAY_TRANSFORM_INVALID: |
| NOTREACHED(); |
| return OVERLAY_TRANSFORM_NONE; |
| case OVERLAY_TRANSFORM_NONE: |
| return OVERLAY_TRANSFORM_NONE; |
| case OVERLAY_TRANSFORM_FLIP_HORIZONTAL: |
| return OVERLAY_TRANSFORM_FLIP_HORIZONTAL; |
| case OVERLAY_TRANSFORM_FLIP_VERTICAL: |
| return OVERLAY_TRANSFORM_FLIP_VERTICAL; |
| case OVERLAY_TRANSFORM_ROTATE_CLOCKWISE_90: |
| return OVERLAY_TRANSFORM_ROTATE_CLOCKWISE_270; |
| case OVERLAY_TRANSFORM_ROTATE_CLOCKWISE_180: |
| return OVERLAY_TRANSFORM_ROTATE_CLOCKWISE_180; |
| case OVERLAY_TRANSFORM_ROTATE_CLOCKWISE_270: |
| return OVERLAY_TRANSFORM_ROTATE_CLOCKWISE_90; |
| } |
| NOTREACHED(); |
| return OVERLAY_TRANSFORM_NONE; |
| } |
| |
| } // namespace gfx |