133 lines
5.2 KiB
C++
133 lines
5.2 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 <LibGUI/Painter.h>
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#include <LibWeb/CSS/StyleResolver.h>
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#include <LibWeb/DOM/Element.h>
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#include <LibWeb/Dump.h>
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#include <LibWeb/Layout/BlockBox.h>
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#include <LibWeb/Layout/InitialContainingBlockBox.h>
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#include <LibWeb/Layout/InlineFormattingContext.h>
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#include <LibWeb/Layout/InlineNode.h>
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#include <LibWeb/Layout/ReplacedBox.h>
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#include <LibWeb/Layout/TextNode.h>
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#include <LibWeb/Layout/WidgetBox.h>
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#include <math.h>
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namespace Web::Layout {
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BlockBox::BlockBox(DOM::Document& document, DOM::Node* node, NonnullRefPtr<CSS::StyleProperties> style)
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: Box(document, node, move(style))
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{
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}
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BlockBox::BlockBox(DOM::Document& document, DOM::Node* node, CSS::ComputedValues computed_values)
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: Box(document, node, move(computed_values))
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{
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}
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BlockBox::~BlockBox()
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{
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}
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void BlockBox::paint(PaintContext& context, PaintPhase phase)
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{
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if (!is_visible())
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return;
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Box::paint(context, phase);
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if (!children_are_inline())
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return;
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for (auto& line_box : m_line_boxes) {
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for (auto& fragment : line_box.fragments()) {
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if (context.should_show_line_box_borders())
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context.painter().draw_rect(enclosing_int_rect(fragment.absolute_rect()), Color::Green);
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fragment.paint(context, phase);
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}
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}
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// FIXME: Merge this loop with the above somehow..
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if (phase == PaintPhase::FocusOutline) {
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for (auto& line_box : m_line_boxes) {
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for (auto& fragment : line_box.fragments()) {
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auto* node = fragment.layout_node().dom_node();
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if (!node)
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continue;
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auto* parent = node->parent_element();
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if (!parent)
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continue;
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if (parent->is_focused())
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context.painter().draw_rect(enclosing_int_rect(fragment.absolute_rect()), context.palette().focus_outline());
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}
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}
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}
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}
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HitTestResult BlockBox::hit_test(const Gfx::IntPoint& position, HitTestType type) const
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{
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if (!children_are_inline())
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return Box::hit_test(position, type);
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HitTestResult last_good_candidate;
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for (auto& line_box : m_line_boxes) {
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for (auto& fragment : line_box.fragments()) {
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if (is<Box>(fragment.layout_node()) && downcast<Box>(fragment.layout_node()).stacking_context())
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continue;
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if (enclosing_int_rect(fragment.absolute_rect()).contains(position)) {
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if (is<BlockBox>(fragment.layout_node()))
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return downcast<BlockBox>(fragment.layout_node()).hit_test(position, type);
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return { fragment.layout_node(), fragment.text_index_at(position.x()) };
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}
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if (fragment.absolute_rect().top() <= position.y())
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last_good_candidate = { fragment.layout_node(), fragment.text_index_at(position.x()) };
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}
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}
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if (type == HitTestType::TextCursor && last_good_candidate.layout_node)
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return last_good_candidate;
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return { absolute_rect().contains(position.x(), position.y()) ? this : nullptr };
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}
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void BlockBox::split_into_lines(InlineFormattingContext& context, LayoutMode layout_mode)
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{
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auto& containing_block = context.containing_block();
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auto* line_box = &containing_block.ensure_last_line_box();
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context.dimension_box_on_line(*this, layout_mode);
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float available_width = context.available_width_at_line(containing_block.line_boxes().size() - 1);
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if (layout_mode == LayoutMode::AllPossibleLineBreaks && line_box->width() > 0) {
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line_box = &containing_block.add_line_box();
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} else if (layout_mode == LayoutMode::Default && line_box->width() > 0 && line_box->width() + border_box_width() > available_width) {
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line_box = &containing_block.add_line_box();
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}
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line_box->add_fragment(*this, 0, 0, border_box_width(), height());
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}
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}
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