cc/output/overlay_candidate.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "cc/output/overlay_candidate.h"
   6
   7 #include <algorithm>
   8 #include "base/logging.h"
   9 #include "ui/gfx/geometry/rect_conversions.h"
  10
  11 namespace cc {
  12
  13 OverlayCandidate::OverlayCandidate()
  14     : transform(gfx::OVERLAY_TRANSFORM_NONE),
  15       format(RGBA_8888),
  16       uv_rect(0.f, 0.f, 1.f, 1.f),
  17       resource_id(0),
  18       plane_z_order(0),
  19       overlay_handled(false) {}
  20
  21 OverlayCandidate::~OverlayCandidate() {}
  22
  23 // static
  24 gfx::OverlayTransform OverlayCandidate::GetOverlayTransform(
  25     const gfx::Transform& quad_transform,
  26     bool flipped) {
  27   if (!quad_transform.IsIdentityOrTranslation())
  28     return gfx::OVERLAY_TRANSFORM_INVALID;
  29
  30   return flipped ? gfx::OVERLAY_TRANSFORM_FLIP_VERTICAL
  31                  : gfx::OVERLAY_TRANSFORM_NONE;
  32 }
  33
  34 // static
  35 gfx::Rect OverlayCandidate::GetOverlayRect(const gfx::Transform& quad_transform,
  36                                            const gfx::Rect& rect) {
  37   DCHECK(quad_transform.IsIdentityOrTranslation());
  38
  39   gfx::RectF float_rect(rect);
  40   quad_transform.TransformRect(&float_rect);
  41   return gfx::ToNearestRect(float_rect);
  42 }
  43
  44 }  // namespace cc