fd7920fa8f
This is very dumb and only lays out its child boxes on a horizontal line with their shrink-to-fit widths. You have to start somewhere! :^)
62 lines
2.5 KiB
C++
62 lines
2.5 KiB
C++
/*
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* Copyright (c) 2021, 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/Layout/BlockBox.h>
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#include <LibWeb/Layout/Box.h>
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#include <LibWeb/Layout/FlexFormattingContext.h>
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namespace Web::Layout {
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FlexFormattingContext::FlexFormattingContext(Box& context_box, FormattingContext* parent)
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: FormattingContext(context_box, parent)
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{
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}
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FlexFormattingContext::~FlexFormattingContext()
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{
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}
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void FlexFormattingContext::run(Box& box, LayoutMode layout_mode)
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{
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// FIXME: This is *extremely* naive and only supports flex items laid out on a single horizontal line.
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// First, compute the width of each flex item.
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box.for_each_child_of_type<Box>([&](Box& child_box) {
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auto shrink_to_fit_result = calculate_shrink_to_fit_widths(child_box);
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auto shrink_to_fit_width = min(max(shrink_to_fit_result.preferred_minimum_width, 0.0f), shrink_to_fit_result.preferred_width);
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layout_inside(child_box, layout_mode);
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child_box.set_width(shrink_to_fit_width);
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});
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// Then, place the items on a line.
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float x = 0;
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box.for_each_child_of_type<Box>([&](Box& child_box) {
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child_box.set_offset(x, 0);
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x += child_box.border_box_width();
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});
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}
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}
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