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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Sam Atkins <atkinssj@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibGfx/Painter.h>
#include <LibWeb/DOM/Document.h>
#include <LibWeb/DOM/Element.h>
#include <LibWeb/Layout/BlockContainer.h>
#include <LibWeb/Layout/InlineFormattingContext.h>
#include <LibWeb/Layout/InlineNode.h>
#include <LibWeb/Painting/BackgroundPainting.h>
#include <LibWeb/Painting/BorderPainting.h>
#include <LibWeb/Painting/ShadowPainting.h>
namespace Web::Layout {
InlineNode::InlineNode(DOM::Document& document, DOM::Element& element, NonnullRefPtr<CSS::StyleProperties> style)
: Layout::NodeWithStyleAndBoxModelMetrics(document, &element, move(style))
{
set_inline(true);
}
InlineNode::~InlineNode()
{
}
void InlineNode::split_into_lines(InlineFormattingContext& context, LayoutMode layout_mode)
{
auto& containing_block = context.containing_block();
if (!computed_values().padding().left.is_undefined_or_auto()) {
float padding_left = computed_values().padding().left.resolved(CSS::Length::make_px(0), *this, containing_block.width()).to_px(*this);
containing_block.ensure_last_line_box().add_fragment(*this, 0, 0, padding_left, 0, LineBoxFragment::Type::Leading);
}
NodeWithStyleAndBoxModelMetrics::split_into_lines(context, layout_mode);
if (!computed_values().padding().right.is_undefined_or_auto()) {
float padding_right = computed_values().padding().right.resolved(CSS::Length::make_px(0), *this, containing_block.width()).to_px(*this);
containing_block.ensure_last_line_box().add_fragment(*this, 0, 0, padding_right, 0, LineBoxFragment::Type::Trailing);
}
}
void InlineNode::paint(PaintContext& context, PaintPhase phase)
{
auto& painter = context.painter();
if (phase == PaintPhase::Background) {
auto background_data = Painting::BackgroundData {
.color = computed_values().background_color(),
.image = background_image() ? background_image()->bitmap() : nullptr,
.repeat_x = computed_values().background_repeat_x(),
.repeat_y = computed_values().background_repeat_y()
};
auto top_left_border_radius = computed_values().border_top_left_radius();
auto top_right_border_radius = computed_values().border_top_right_radius();
auto bottom_right_border_radius = computed_values().border_bottom_right_radius();
auto bottom_left_border_radius = computed_values().border_bottom_left_radius();
for_each_fragment([&](auto& fragment) {
// FIXME: This recalculates our (InlineNode's) absolute_rect() for every single fragment!
auto rect = fragment.absolute_rect();
auto border_radius_data = Painting::normalized_border_radius_data(*this, rect, top_left_border_radius, top_right_border_radius, bottom_right_border_radius, bottom_left_border_radius);
Painting::paint_background(context, enclosing_int_rect(rect), background_data, border_radius_data);
if (auto computed_box_shadow = computed_values().box_shadow(); computed_box_shadow.has_value()) {
auto box_shadow_data = Painting::BoxShadowData {
.offset_x = (int)computed_box_shadow->offset_x.resolved_or_zero(*this, rect.width()).to_px(*this),
.offset_y = (int)computed_box_shadow->offset_y.resolved_or_zero(*this, rect.height()).to_px(*this),
.blur_radius = (int)computed_box_shadow->blur_radius.resolved_or_zero(*this, rect.width()).to_px(*this),
.color = computed_box_shadow->color
};
Painting::paint_box_shadow(context, enclosing_int_rect(rect), box_shadow_data);
}
return IterationDecision::Continue;
});
}
if (phase == PaintPhase::Border) {
auto top_left_border_radius = computed_values().border_top_left_radius();
auto top_right_border_radius = computed_values().border_top_right_radius();
auto bottom_right_border_radius = computed_values().border_bottom_right_radius();
auto bottom_left_border_radius = computed_values().border_bottom_left_radius();
auto borders_data = Painting::BordersData {
.top = computed_values().border_top(),
.right = computed_values().border_right(),
.bottom = computed_values().border_bottom(),
.left = computed_values().border_left(),
};
for_each_fragment([&](auto& fragment) {
// FIXME: This recalculates our (InlineNode's) absolute_rect() for every single fragment!
auto bordered_rect = fragment.absolute_rect();
bordered_rect.inflate(borders_data.top.width, borders_data.right.width, borders_data.bottom.width, borders_data.left.width);
auto border_radius_data = Painting::normalized_border_radius_data(*this, bordered_rect, top_left_border_radius, top_right_border_radius, bottom_right_border_radius, bottom_left_border_radius);
Painting::paint_all_borders(context, bordered_rect, border_radius_data, borders_data);
return IterationDecision::Continue;
});
}
if (phase == PaintPhase::Foreground && document().inspected_node() == dom_node()) {
// FIXME: This paints a double-thick border between adjacent fragments, where ideally there
// would be none. Once we implement non-rectangular outlines for the `outline` CSS
// property, we can use that here instead.
for_each_fragment([&](auto& fragment) {
painter.draw_rect(enclosing_int_rect(fragment.absolute_rect()), Color::Magenta);
return IterationDecision::Continue;
});
}
}
template<typename Callback>
void InlineNode::for_each_fragment(Callback callback)
{
// FIXME: This will be slow if the containing block has a lot of fragments!
containing_block()->for_each_fragment([&](auto& fragment) {
if (!is_inclusive_ancestor_of(fragment.layout_node()))
return IterationDecision::Continue;
// FIXME: This skips the 0-width fragments at the start and end of the InlineNode.
// A better solution would be to not generate them in the first place.
if (fragment.width() == 0 || fragment.height() == 0)
return IterationDecision::Continue;
return callback(fragment);
});
}
}
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