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https://github.com/LadybirdBrowser/ladybird.git
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1d343116a9
This commit fixes algorithm for computing auto height (CSS 2.2 10.6.7) by including floating boxes into computation and implements one of the cases for computing the height of absolutely positioned, non-replaced elements (10.6.4 rule 3)
79 lines
3.2 KiB
C++
79 lines
3.2 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <LibWeb/Forward.h>
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namespace Web::Layout {
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class FormattingContext {
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public:
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virtual void run(Box&, LayoutMode) = 0;
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Box& context_box() { return *m_context_box; }
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const Box& context_box() const { return *m_context_box; }
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FormattingContext* parent() { return m_parent; }
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const FormattingContext* parent() const { return m_parent; }
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virtual bool is_block_formatting_context() const { return false; }
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static bool creates_block_formatting_context(const Box&);
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static float compute_width_for_replaced_element(const ReplacedBox&);
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static float compute_height_for_replaced_element(const ReplacedBox&);
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protected:
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FormattingContext(Box&, FormattingContext* parent = nullptr);
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virtual ~FormattingContext();
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void layout_inside(Box&, LayoutMode);
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struct ShrinkToFitResult {
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float preferred_width { 0 };
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float preferred_minimum_width { 0 };
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};
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static float compute_auto_height_for_block_level_element(const Box& box);
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static float tentative_width_for_replaced_element(const ReplacedBox&, const CSS::Length& width);
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static float tentative_height_for_replaced_element(const ReplacedBox&, const CSS::Length& width);
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ShrinkToFitResult calculate_shrink_to_fit_widths(Box&);
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void layout_absolutely_positioned_element(Box&);
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void compute_width_for_absolutely_positioned_element(Box&);
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void compute_width_for_absolutely_positioned_non_replaced_element(Box&);
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void compute_width_for_absolutely_positioned_replaced_element(ReplacedBox&);
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void compute_height_for_absolutely_positioned_element(Box&);
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void compute_height_for_absolutely_positioned_non_replaced_element(Box&);
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void compute_height_for_absolutely_positioned_replaced_element(ReplacedBox&);
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FormattingContext* m_parent { nullptr };
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Box* m_context_box { nullptr };
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};
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}
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