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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/Box.h>
#include <LibWeb/Layout/LineBox.h>
namespace Web::Layout {
class BlockBox : public Box {
public:
BlockBox(DOM::Document&, DOM::Node*, NonnullRefPtr<CSS::StyleProperties>);
BlockBox(DOM::Document&, DOM::Node*, CSS::ComputedValues);
virtual ~BlockBox() override;
virtual void paint(PaintContext&, PaintPhase) override;
virtual HitTestResult hit_test(const Gfx::IntPoint&, HitTestType) const override;
BlockBox* previous_sibling() { return downcast<BlockBox>(Node::previous_sibling()); }
const BlockBox* previous_sibling() const { return downcast<BlockBox>(Node::previous_sibling()); }
BlockBox* next_sibling() { return downcast<BlockBox>(Node::next_sibling()); }
const BlockBox* next_sibling() const { return downcast<BlockBox>(Node::next_sibling()); }
template<typename Callback>
void for_each_fragment(Callback);
template<typename Callback>
void for_each_fragment(Callback) const;
virtual void split_into_lines(InlineFormattingContext&, LayoutMode) override;
bool is_scrollable() const;
const Gfx::FloatPoint& scroll_offset() const { return m_scroll_offset; }
void set_scroll_offset(const Gfx::FloatPoint&);
private:
virtual bool is_block_box() const final { return true; }
virtual bool wants_mouse_events() const override { return true; }
virtual void handle_mousewheel(Badge<EventHandler>, const Gfx::IntPoint&, unsigned buttons, unsigned modifiers, int wheel_delta) override;
bool should_clip_overflow() const;
Gfx::FloatPoint m_scroll_offset;
};
template<>
inline bool Node::fast_is<BlockBox>() const { return is_block_box(); }
template<typename Callback>
void BlockBox::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 BlockBox::for_each_fragment(Callback callback) const
{
for (auto& line_box : line_boxes()) {
for (auto& fragment : line_box.fragments()) {
if (callback(fragment) == IterationDecision::Break)
return;
}
}
}
}
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