656b01eb0f
The box tree and line boxes now all store a relative offset from their containing block, instead of an absolute (document-relative) position. This removes a huge pain point from the layout system which was having to adjust offsets recursively when something moved. It also makes some layout logic significantly simpler. Every box can still find its absolute position by walking its chain of containing blocks and accumulating the translation from the root. This is currently what we do both for rendering and hit testing.
78 lines
3 KiB
C++
78 lines
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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#include <LibWeb/Dump.h>
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#include <LibWeb/Frame/Frame.h>
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#include <LibWeb/Layout/LayoutDocument.h>
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#include <LibWeb/Layout/LayoutImage.h>
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#include <LibWeb/Layout/LayoutWidget.h>
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namespace Web {
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LayoutDocument::LayoutDocument(const Document& document, NonnullRefPtr<StyleProperties> style)
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: LayoutBlock(&document, move(style))
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{
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}
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LayoutDocument::~LayoutDocument()
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{
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}
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void LayoutDocument::layout(LayoutMode layout_mode)
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{
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ASSERT(document().frame());
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set_width(document().frame()->size().width());
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LayoutNode::layout(layout_mode);
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ASSERT(!children_are_inline());
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float lowest_bottom = 0;
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for_each_child([&](auto& child) {
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ASSERT(is<LayoutBlock>(child));
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auto& child_block = to<LayoutBlock>(child);
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lowest_bottom = max(lowest_bottom, child_block.absolute_rect().bottom());
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});
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set_height(lowest_bottom);
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// FIXME: This is a total hack. Make sure any GUI::Widgets are moved into place after layout.
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// We should stop embedding GUI::Widgets entirely, since that won't work out-of-process.
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for_each_in_subtree_of_type<LayoutWidget>([&](auto& widget) {
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widget.update_widget();
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return IterationDecision::Continue;
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});
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}
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void LayoutDocument::did_set_viewport_rect(Badge<Frame>, const Gfx::Rect& a_viewport_rect)
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{
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Gfx::FloatRect viewport_rect(a_viewport_rect.x(), a_viewport_rect.y(), a_viewport_rect.width(), a_viewport_rect.height());
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for_each_in_subtree_of_type<LayoutImage>([&](auto& layout_image) {
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const_cast<HTMLImageElement&>(layout_image.node()).set_visible_in_viewport({}, viewport_rect.intersects(layout_image.absolute_rect()));
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return IterationDecision::Continue;
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});
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}
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}
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