/*

 * Copyright (c) 2018-2022, Andreas Kling <kling@serenityos.org>

 *

 * SPDX-License-Identifier: BSD-2-Clause

 */

#include <AK/Debug.h>

#include <LibWeb/HTML/NavigableContainer.h>

#include <LibWeb/Layout/FrameBox.h>

#include <LibWeb/Layout/Viewport.h>

#include <LibWeb/Painting/BorderRadiusCornerClipper.h>

#include <LibWeb/Painting/NestedBrowsingContextPaintable.h>

#include <LibWeb/Painting/ViewportPaintable.h>

namespace Web::Painting {

JS_DEFINE_ALLOCATOR(NestedBrowsingContextPaintable);

JS::NonnullGCPtr<NestedBrowsingContextPaintable> NestedBrowsingContextPaintable::create(Layout::FrameBox const& layout_box)

{

    return layout_box.heap().allocate_without_realm<NestedBrowsingContextPaintable>(layout_box);

}

NestedBrowsingContextPaintable::NestedBrowsingContextPaintable(Layout::FrameBox const& layout_box)

    : PaintableBox(layout_box)

{

}

Layout::FrameBox const& NestedBrowsingContextPaintable::layout_box() const

{

    return static_cast<Layout::FrameBox const&>(layout_node());

}

void NestedBrowsingContextPaintable::paint(PaintContext& context, PaintPhase phase) const

{

    if (!is_visible())

        return;

    PaintableBox::paint(context, phase);

    if (phase == PaintPhase::Foreground) {

        auto absolute_rect = this->absolute_rect();

        auto clip_rect = context.rounded_device_rect(absolute_rect);

        ScopedCornerRadiusClip corner_clip { context, clip_rect, normalized_border_radii_data(ShrinkRadiiForBorders::Yes) };

        auto const* hosted_document = layout_box().dom_node().content_document_without_origin_check();

        if (!hosted_document)

            return;

        auto const* hosted_paint_tree = hosted_document->paintable();

        if (!hosted_paint_tree)

            return;

        context.display_list_recorder().save();

        context.display_list_recorder().add_clip_rect(clip_rect.to_type<int>());

        auto absolute_device_rect = context.enclosing_device_rect(absolute_rect);

        context.display_list_recorder().translate(absolute_device_rect.x().value(), absolute_device_rect.y().value());

        HTML::Navigable::PaintConfig paint_config;

        paint_config.paint_overlay = context.should_paint_overlay();

        paint_config.should_show_line_box_borders = context.should_show_line_box_borders();

        paint_config.has_focus = context.has_focus();

        const_cast<DOM::Document*>(hosted_document)->navigable()->record_display_list(context.display_list_recorder(), paint_config);

        context.display_list_recorder().restore();

        if constexpr (HIGHLIGHT_FOCUSED_FRAME_DEBUG) {

            if (layout_box().dom_node().content_navigable()->is_focused()) {

                context.display_list_recorder().draw_rect(clip_rect.to_type<int>(), Color::Cyan);

            }

        }

    }

}

}