766d816db3
Now that we build lines incrementally, we no longer need the atomic line splitting API. The new InlineLevelIterator and LineBuilder setup does have some regressions from the old behavior, but we can deal with them as we go.
146 lines
4.7 KiB
C++
146 lines
4.7 KiB
C++
/*
|
|
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <LibGfx/Painter.h>
|
|
#include <LibWeb/Dump.h>
|
|
#include <LibWeb/Layout/BlockContainer.h>
|
|
#include <LibWeb/Layout/InitialContainingBlock.h>
|
|
#include <LibWeb/Layout/InlineFormattingContext.h>
|
|
#include <LibWeb/Layout/ReplacedBox.h>
|
|
#include <LibWeb/Layout/TextNode.h>
|
|
|
|
namespace Web::Layout {
|
|
|
|
BlockContainer::BlockContainer(DOM::Document& document, DOM::Node* node, NonnullRefPtr<CSS::StyleProperties> style)
|
|
: Box(document, node, move(style))
|
|
{
|
|
}
|
|
|
|
BlockContainer::BlockContainer(DOM::Document& document, DOM::Node* node, CSS::ComputedValues computed_values)
|
|
: Box(document, node, move(computed_values))
|
|
{
|
|
}
|
|
|
|
BlockContainer::~BlockContainer()
|
|
{
|
|
}
|
|
|
|
bool BlockContainer::should_clip_overflow() const
|
|
{
|
|
return computed_values().overflow_x() != CSS::Overflow::Visible && computed_values().overflow_y() != CSS::Overflow::Visible;
|
|
}
|
|
|
|
void BlockContainer::paint(PaintContext& context, PaintPhase phase)
|
|
{
|
|
if (!is_visible())
|
|
return;
|
|
|
|
Box::paint(context, phase);
|
|
|
|
if (!children_are_inline())
|
|
return;
|
|
|
|
if (should_clip_overflow()) {
|
|
context.painter().save();
|
|
// FIXME: Handle overflow-x and overflow-y being different values.
|
|
context.painter().add_clip_rect(enclosing_int_rect(padded_rect()));
|
|
context.painter().translate(-m_scroll_offset.to_type<int>());
|
|
}
|
|
|
|
for (auto& line_box : m_line_boxes) {
|
|
for (auto& fragment : line_box.fragments()) {
|
|
if (context.should_show_line_box_borders())
|
|
context.painter().draw_rect(enclosing_int_rect(fragment.absolute_rect()), Color::Green);
|
|
fragment.paint(context, phase);
|
|
}
|
|
}
|
|
|
|
if (should_clip_overflow()) {
|
|
context.painter().restore();
|
|
}
|
|
|
|
// FIXME: Merge this loop with the above somehow..
|
|
if (phase == PaintPhase::FocusOutline) {
|
|
for (auto& line_box : m_line_boxes) {
|
|
for (auto& fragment : line_box.fragments()) {
|
|
auto* node = fragment.layout_node().dom_node();
|
|
if (!node)
|
|
continue;
|
|
auto* parent = node->parent_element();
|
|
if (!parent)
|
|
continue;
|
|
if (parent->is_focused())
|
|
context.painter().draw_rect(enclosing_int_rect(fragment.absolute_rect()), context.palette().focus_outline());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
HitTestResult BlockContainer::hit_test(const Gfx::IntPoint& position, HitTestType type) const
|
|
{
|
|
if (!children_are_inline())
|
|
return Box::hit_test(position, type);
|
|
|
|
HitTestResult last_good_candidate;
|
|
for (auto& line_box : m_line_boxes) {
|
|
for (auto& fragment : line_box.fragments()) {
|
|
if (is<Box>(fragment.layout_node()) && verify_cast<Box>(fragment.layout_node()).stacking_context())
|
|
continue;
|
|
if (enclosing_int_rect(fragment.absolute_rect()).contains(position)) {
|
|
if (is<BlockContainer>(fragment.layout_node()))
|
|
return verify_cast<BlockContainer>(fragment.layout_node()).hit_test(position, type);
|
|
return { fragment.layout_node(), fragment.text_index_at(position.x()) };
|
|
}
|
|
if (fragment.absolute_rect().top() <= position.y())
|
|
last_good_candidate = { fragment.layout_node(), fragment.text_index_at(position.x()) };
|
|
}
|
|
}
|
|
|
|
if (type == HitTestType::TextCursor && last_good_candidate.layout_node)
|
|
return last_good_candidate;
|
|
return { absolute_rect().contains(position.x(), position.y()) ? this : nullptr };
|
|
}
|
|
|
|
bool BlockContainer::is_scrollable() const
|
|
{
|
|
// FIXME: Support horizontal scroll as well (overflow-x)
|
|
return computed_values().overflow_y() == CSS::Overflow::Scroll;
|
|
}
|
|
|
|
void BlockContainer::set_scroll_offset(const Gfx::FloatPoint& offset)
|
|
{
|
|
// FIXME: If there is horizontal and vertical scroll ignore only part of the new offset
|
|
if (offset.y() < 0 || m_scroll_offset == offset)
|
|
return;
|
|
m_scroll_offset = offset;
|
|
set_needs_display();
|
|
}
|
|
|
|
bool BlockContainer::handle_mousewheel(Badge<EventHandler>, const Gfx::IntPoint&, unsigned int, unsigned int, int wheel_delta_x, int wheel_delta_y)
|
|
{
|
|
if (!is_scrollable())
|
|
return false;
|
|
auto new_offset = m_scroll_offset;
|
|
new_offset.translate_by(wheel_delta_x, wheel_delta_y);
|
|
set_scroll_offset(new_offset);
|
|
|
|
return true;
|
|
}
|
|
|
|
LineBox& BlockContainer::ensure_last_line_box()
|
|
{
|
|
if (m_line_boxes.is_empty())
|
|
return add_line_box();
|
|
return m_line_boxes.last();
|
|
}
|
|
|
|
LineBox& BlockContainer::add_line_box()
|
|
{
|
|
m_line_boxes.append(LineBox());
|
|
return m_line_boxes.last();
|
|
}
|
|
|
|
}
|