9b0ca75f84
Image boxes want to know whether they are inside the visible viewport. This is used to pause/resume animations, and to update the purgeable memory volatility state. Previously we would traverse the entire layout tree on every resize, calling a helper on each ImageBox. Make those boxes register with the frame they are interested in instead, saving us all that traversal. This also makes it easier for other parts of the code to learn about viewport changes in the future. :^)
58 lines
2.3 KiB
C++
58 lines
2.3 KiB
C++
/*
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* Copyright (c) 2018-2020, 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/DOM/Document.h>
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#include <LibWeb/Layout/BlockBox.h>
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namespace Web::Layout {
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class InitialContainingBlockBox final : public BlockBox {
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public:
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explicit InitialContainingBlockBox(DOM::Document&, NonnullRefPtr<CSS::StyleProperties>);
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virtual ~InitialContainingBlockBox() override;
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const DOM::Document& dom_node() const { return static_cast<const DOM::Document&>(*Node::dom_node()); }
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void paint_all_phases(PaintContext&);
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virtual void paint(PaintContext&, PaintPhase) override;
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virtual HitTestResult hit_test(const Gfx::IntPoint&, HitTestType) const override;
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const LayoutRange& selection() const { return m_selection; }
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void set_selection(const LayoutRange&);
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void set_selection_end(const LayoutPosition&);
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void build_stacking_context_tree();
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void recompute_selection_states();
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private:
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LayoutRange m_selection;
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};
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}
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