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/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <LibWeb/Forward.h>
namespace Web::Layout {
class FormattingContext {
public:
virtual void run(LayoutMode) = 0;
Box& context_box() { return *m_context_box; }
const Box& context_box() const { return *m_context_box; }
FormattingContext* parent() { return m_parent; }
const FormattingContext* parent() const { return m_parent; }
virtual bool is_block_formatting_context() const { return false; }
static bool creates_block_formatting_context(const Box&);
protected:
FormattingContext(Box&, FormattingContext* parent = nullptr);
virtual ~FormattingContext();
void set_context_box(Box& box) { m_context_box = &box; }
void layout_inside(Box&, LayoutMode);
struct ShrinkToFitResult {
float preferred_width { 0 };
float preferred_minimum_width { 0 };
};
ShrinkToFitResult calculate_shrink_to_fit_widths(Box&);
FormattingContext* m_parent { nullptr };
Box* m_context_box { nullptr };
};
}
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