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// Copyright 2015 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef COBALT_LAYOUT_INITIAL_CONTAINING_BLOCK_H_
#define COBALT_LAYOUT_INITIAL_CONTAINING_BLOCK_H_
#include "base/memory/scoped_ptr.h"
#include "cobalt/cssom/css_computed_style_data.h"
#include "cobalt/dom/html_element.h"
#include "cobalt/dom/window.h"
#include "cobalt/layout/block_formatting_block_container_box.h"
#include "cobalt/layout/used_style.h"
namespace cobalt {
namespace layout {
// The containing block in which the root element lives is a rectangle called
// the initial containing block. For continuous media, it has the dimensions
// of the viewport and is anchored at the canvas origin.
// https://www.w3.org/TR/CSS2/visudet.html#containing-block-details
struct InitialContainingBlockCreationResults {
// Created initial containing block box results.
scoped_refptr<BlockLevelBlockContainerBox> box;
// The initial containing block may have its background style propagated into
// it from the HTML or BODY element. This value will point to which element
// the value was propagated from, or it will be NULL if no style was
// propagated.
dom::HTMLElement* background_style_source;
};
// This creates the initial containing block after adding background color
// and image to the initial style, when needed.
InitialContainingBlockCreationResults CreateInitialContainingBlock(
const cssom::CSSComputedStyleData& default_initial_containing_block_style,
const scoped_refptr<dom::Document>& document,
UsedStyleProvider* used_style_provider,
LayoutStatTracker* layout_stat_tracker);
} // namespace layout
} // namespace cobalt
#endif // COBALT_LAYOUT_INITIAL_CONTAINING_BLOCK_H_