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/*
* Copyright (c) 2018-2020, 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/Layout/LayoutBox.h>
#include <LibWeb/Layout/LineBox.h>
namespace Web {
class LayoutBlock : public LayoutBox {
public:
LayoutBlock(DOM::Document&, DOM::Node*, NonnullRefPtr<CSS::StyleProperties>);
virtual ~LayoutBlock() override;
virtual const char* class_name() const override { return "LayoutBlock"; }
virtual void layout(LayoutMode = LayoutMode::Default) override;
virtual void paint(PaintContext&, PaintPhase) override;
virtual LayoutNode& inline_wrapper() override;
Vector<LineBox>& line_boxes() { return m_line_boxes; }
const Vector<LineBox>& line_boxes() const { return m_line_boxes; }
LineBox& ensure_last_line_box();
LineBox& add_line_box();
virtual HitTestResult hit_test(const Gfx::IntPoint&, HitTestType) const override;
LayoutBlock* previous_sibling() { return downcast<LayoutBlock>(LayoutNode::previous_sibling()); }
const LayoutBlock* previous_sibling() const { return downcast<LayoutBlock>(LayoutNode::previous_sibling()); }
LayoutBlock* next_sibling() { return downcast<LayoutBlock>(LayoutNode::next_sibling()); }
const LayoutBlock* next_sibling() const { return downcast<LayoutBlock>(LayoutNode::next_sibling()); }
template<typename Callback>
void for_each_fragment(Callback);
template<typename Callback>
void for_each_fragment(Callback) const;
virtual void split_into_lines(LayoutBlock& container, LayoutMode) override;
void layout_inside(LayoutMode);
protected:
void compute_width();
void compute_height();
void layout_absolutely_positioned_descendants();
virtual float width_of_logical_containing_block() const;
private:
virtual bool is_block() const override { return true; }
struct ShrinkToFitResult {
float preferred_width { 0 };
float preferred_minimum_width { 0 };
};
ShrinkToFitResult calculate_shrink_to_fit_width();
void compute_width_for_absolutely_positioned_block();
void place_block_level_non_replaced_element_in_normal_flow(LayoutBlock&);
void place_block_level_replaced_element_in_normal_flow(LayoutReplaced&);
void layout_absolutely_positioned_descendant(LayoutBox&);
NonnullRefPtr<CSS::StyleProperties> style_for_anonymous_block() const;
void layout_inline_children(LayoutMode);
void layout_contained_boxes(LayoutMode);
Vector<LineBox> m_line_boxes;
};
template<typename Callback>
void LayoutBlock::for_each_fragment(Callback callback)
{
for (auto& line_box : line_boxes()) {
for (auto& fragment : line_box.fragments()) {
if (callback(fragment) == IterationDecision::Break)
return;
}
}
}
template<typename Callback>
void LayoutBlock::for_each_fragment(Callback callback) const
{
for (auto& line_box : line_boxes()) {
for (auto& fragment : line_box.fragments()) {
if (callback(fragment) == IterationDecision::Break)
return;
}
}
}
}
AK_BEGIN_TYPE_TRAITS(Web::LayoutBlock)
static bool is_type(const Web::LayoutNode& layout_node) { return layout_node.is_block(); }
AK_END_TYPE_TRAITS()
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