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// Copyright 2013 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 "cc/layers/layer_sticky_position_constraint.h"
#include "cc/layers/layer.h"
namespace cc {
LayerStickyPositionConstraint::LayerStickyPositionConstraint()
: is_sticky(false),
is_anchored_left(false),
is_anchored_right(false),
is_anchored_top(false),
is_anchored_bottom(false),
left_offset(0.f),
right_offset(0.f),
top_offset(0.f),
bottom_offset(0.f),
nearest_layer_shifting_sticky_box(Layer::INVALID_ID),
nearest_layer_shifting_containing_block(Layer::INVALID_ID) {}
LayerStickyPositionConstraint::LayerStickyPositionConstraint(
const LayerStickyPositionConstraint& other)
: is_sticky(other.is_sticky),
is_anchored_left(other.is_anchored_left),
is_anchored_right(other.is_anchored_right),
is_anchored_top(other.is_anchored_top),
is_anchored_bottom(other.is_anchored_bottom),
left_offset(other.left_offset),
right_offset(other.right_offset),
top_offset(other.top_offset),
bottom_offset(other.bottom_offset),
parent_relative_sticky_box_offset(
other.parent_relative_sticky_box_offset),
scroll_container_relative_sticky_box_rect(
other.scroll_container_relative_sticky_box_rect),
scroll_container_relative_containing_block_rect(
other.scroll_container_relative_containing_block_rect),
nearest_layer_shifting_sticky_box(
other.nearest_layer_shifting_sticky_box),
nearest_layer_shifting_containing_block(
other.nearest_layer_shifting_containing_block) {}
bool LayerStickyPositionConstraint::operator==(
const LayerStickyPositionConstraint& other) const {
if (!is_sticky && !other.is_sticky)
return true;
return is_sticky == other.is_sticky &&
is_anchored_left == other.is_anchored_left &&
is_anchored_right == other.is_anchored_right &&
is_anchored_top == other.is_anchored_top &&
is_anchored_bottom == other.is_anchored_bottom &&
left_offset == other.left_offset &&
right_offset == other.right_offset && top_offset == other.top_offset &&
bottom_offset == other.bottom_offset &&
parent_relative_sticky_box_offset ==
other.parent_relative_sticky_box_offset &&
scroll_container_relative_sticky_box_rect ==
other.scroll_container_relative_sticky_box_rect &&
scroll_container_relative_containing_block_rect ==
other.scroll_container_relative_containing_block_rect &&
nearest_layer_shifting_sticky_box ==
other.nearest_layer_shifting_sticky_box &&
nearest_layer_shifting_containing_block ==
other.nearest_layer_shifting_containing_block;
}
bool LayerStickyPositionConstraint::operator!=(
const LayerStickyPositionConstraint& other) const {
return !(*this == other);
}
int LayerStickyPositionConstraint::NearestStickyAncestor() {
return (nearest_layer_shifting_sticky_box != Layer::INVALID_ID)
? nearest_layer_shifting_sticky_box
: nearest_layer_shifting_containing_block;
}
} // namespace cc