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https://github.com/RGBCube/serenity
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ed84fbce47
This will allow us to use a protective NonnullRefPtr to keep paintables alive while running arbitrary JavaScript in response to events.
81 lines
2.7 KiB
C++
81 lines
2.7 KiB
C++
/*
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* Copyright (c) 2018-2022, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibGfx/StylePainter.h>
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#include <LibWeb/Layout/ListItemMarkerBox.h>
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#include <LibWeb/Painting/MarkerPaintable.h>
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namespace Web::Painting {
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NonnullRefPtr<MarkerPaintable> MarkerPaintable::create(Layout::ListItemMarkerBox const& layout_box)
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{
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return adopt_ref(*new MarkerPaintable(layout_box));
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}
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MarkerPaintable::MarkerPaintable(Layout::ListItemMarkerBox const& layout_box)
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: PaintableBox(layout_box)
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{
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}
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Layout::ListItemMarkerBox const& MarkerPaintable::layout_box() const
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{
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return static_cast<Layout::ListItemMarkerBox const&>(layout_node());
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}
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void MarkerPaintable::paint(PaintContext& context, PaintPhase phase) const
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{
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if (phase != PaintPhase::Foreground)
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return;
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auto enclosing = enclosing_int_rect(absolute_rect());
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if (auto const* list_style_image = layout_box().list_style_image_bitmap()) {
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context.painter().blit(enclosing.location(), *list_style_image, list_style_image->rect());
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return;
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}
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auto color = computed_values().color();
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int marker_width = (int)enclosing.height() / 2;
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Gfx::IntRect marker_rect { 0, 0, marker_width, marker_width };
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marker_rect.center_within(enclosing);
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switch (layout_box().list_style_type()) {
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case CSS::ListStyleType::Square:
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context.painter().fill_rect(marker_rect, color);
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break;
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case CSS::ListStyleType::Circle:
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// For some reason for draw_ellipse() the ellipse is outside of the rect while for fill_ellipse() the ellipse is inside.
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// Scale the marker_rect with sqrt(2) to get an ellipse arc (circle) that appears as if it was inside of the marker_rect.
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marker_rect.set_height(marker_rect.height() / 1.41);
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marker_rect.set_width(marker_rect.width() / 1.41);
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marker_rect.center_within(enclosing);
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context.painter().draw_ellipse_intersecting(marker_rect, color);
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break;
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case CSS::ListStyleType::Disc:
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context.painter().fill_ellipse(marker_rect, color);
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break;
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case CSS::ListStyleType::Decimal:
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case CSS::ListStyleType::DecimalLeadingZero:
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case CSS::ListStyleType::LowerAlpha:
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case CSS::ListStyleType::LowerLatin:
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case CSS::ListStyleType::LowerRoman:
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case CSS::ListStyleType::UpperAlpha:
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case CSS::ListStyleType::UpperLatin:
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case CSS::ListStyleType::UpperRoman:
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if (layout_box().text().is_null())
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break;
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context.painter().draw_text(enclosing, layout_box().text(), Gfx::TextAlignment::Center);
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break;
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case CSS::ListStyleType::None:
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return;
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default:
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VERIFY_NOT_REACHED();
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}
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}
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}
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