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/*
* Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibWeb/Painting/BorderPainting.h>
#include <LibWeb/Painting/BorderRadiusCornerClipper.h>
#include <LibWeb/Painting/Paintable.h>
#include <LibWeb/Painting/ShadowPainting.h>
namespace Web::Painting {
class PaintableBox : public Paintable {
JS_CELL(PaintableBox, Paintable);
public:
static JS::NonnullGCPtr<PaintableBox> create(Layout::Box const&);
virtual ~PaintableBox();
virtual void paint(PaintContext&, PaintPhase) const override;
bool is_visible() const { return layout_box().is_visible(); }
Layout::Box& layout_box() { return static_cast<Layout::Box&>(Paintable::layout_node()); }
Layout::Box const& layout_box() const { return static_cast<Layout::Box const&>(Paintable::layout_node()); }
auto const& box_model() const { return layout_box().box_model(); }
struct OverflowData {
CSSPixelRect scrollable_overflow_rect;
CSSPixelPoint scroll_offset;
};
CSSPixelRect absolute_rect() const;
CSSPixelPoint effective_offset() const;
void set_offset(CSSPixelPoint);
void set_offset(float x, float y) { set_offset({ x, y }); }
CSSPixelSize const& content_size() const { return m_content_size; }
void set_content_size(CSSPixelSize);
void set_content_size(CSSPixels width, CSSPixels height) { set_content_size({ width, height }); }
void set_content_width(CSSPixels width) { set_content_size(width, content_height()); }
void set_content_height(CSSPixels height) { set_content_size(content_width(), height); }
CSSPixels content_width() const { return m_content_size.width(); }
CSSPixels content_height() const { return m_content_size.height(); }
CSSPixelRect absolute_padding_box_rect() const
{
auto absolute_rect = this->absolute_rect();
CSSPixelRect rect;
rect.set_x(absolute_rect.x() - box_model().padding.left);
rect.set_width(content_width() + box_model().padding.left + box_model().padding.right);
rect.set_y(absolute_rect.y() - box_model().padding.top);
rect.set_height(content_height() + box_model().padding.top + box_model().padding.bottom);
return rect;
}
CSSPixelRect absolute_border_box_rect() const
{
auto padded_rect = this->absolute_padding_box_rect();
CSSPixelRect rect;
rect.set_x(padded_rect.x() - box_model().border.left);
rect.set_width(padded_rect.width() + box_model().border.left + box_model().border.right);
rect.set_y(padded_rect.y() - box_model().border.top);
rect.set_height(padded_rect.height() + box_model().border.top + box_model().border.bottom);
return rect;
}
CSSPixelRect absolute_paint_rect() const;
CSSPixels border_box_width() const
{
auto border_box = box_model().border_box();
return content_width() + border_box.left + border_box.right;
}
CSSPixels border_box_height() const
{
auto border_box = box_model().border_box();
return content_height() + border_box.top + border_box.bottom;
}
CSSPixels absolute_x() const { return absolute_rect().x(); }
CSSPixels absolute_y() const { return absolute_rect().y(); }
CSSPixelPoint absolute_position() const { return absolute_rect().location(); }
bool has_overflow() const { return m_overflow_data.has_value(); }
Optional<CSSPixelRect> scrollable_overflow_rect() const
{
if (!m_overflow_data.has_value())
return {};
return m_overflow_data->scrollable_overflow_rect;
}
Optional<CSSPixelRect> clip_rect() const;
void set_overflow_data(Optional<OverflowData> data) { m_overflow_data = move(data); }
void set_containing_line_box_fragment(Optional<Layout::LineBoxFragmentCoordinate>);
StackingContext* stacking_context() { return m_stacking_context; }
StackingContext const* stacking_context() const { return m_stacking_context; }
void set_stacking_context(NonnullOwnPtr<Painting::StackingContext>);
StackingContext* enclosing_stacking_context();
DOM::Node const* dom_node() const { return layout_box().dom_node(); }
DOM::Node* dom_node() { return layout_box().dom_node(); }
DOM::Document const& document() const { return layout_box().document(); }
DOM::Document& document() { return layout_box().document(); }
virtual void before_children_paint(PaintContext&, PaintPhase) const override;
virtual void after_children_paint(PaintContext&, PaintPhase) const override;
virtual Optional<HitTestResult> hit_test(CSSPixelPoint, HitTestType) const override;
void invalidate_stacking_context();
bool is_out_of_view(PaintContext&) const;
protected:
explicit PaintableBox(Layout::Box const&);
virtual void paint_border(PaintContext&) const;
virtual void paint_backdrop_filter(PaintContext&) const;
virtual void paint_background(PaintContext&) const;
virtual void paint_box_shadow(PaintContext&) const;
virtual CSSPixelRect compute_absolute_rect() const;
virtual CSSPixelRect compute_absolute_paint_rect() const;
enum class ShrinkRadiiForBorders {
Yes,
No
};
Painting::BorderRadiiData normalized_border_radii_data(ShrinkRadiiForBorders shrink = ShrinkRadiiForBorders::No) const;
Vector<ShadowData> resolve_box_shadow_data() const;
private:
Optional<OverflowData> m_overflow_data;
CSSPixelPoint m_offset;
CSSPixelSize m_content_size;
// Some boxes hang off of line box fragments. (inline-block, inline-table, replaced, etc)
Optional<Layout::LineBoxFragmentCoordinate> m_containing_line_box_fragment;
OwnPtr<Painting::StackingContext> m_stacking_context;
Optional<CSSPixelRect> mutable m_absolute_rect;
Optional<CSSPixelRect> mutable m_absolute_paint_rect;
Optional<CSSPixelRect> mutable m_clip_rect;
mutable bool m_clipping_overflow { false };
Optional<BorderRadiusCornerClipper> mutable m_overflow_corner_radius_clipper;
};
class PaintableWithLines final : public PaintableBox {
JS_CELL(PaintableWithLines, PaintableBox);
public:
static JS::NonnullGCPtr<PaintableWithLines> create(Layout::BlockContainer const&);
virtual ~PaintableWithLines() override;
Layout::BlockContainer const& layout_box() const;
Layout::BlockContainer& layout_box();
Vector<Layout::LineBox> const& line_boxes() const { return m_line_boxes; }
void set_line_boxes(Vector<Layout::LineBox>&& line_boxes) { m_line_boxes = move(line_boxes); }
template<typename Callback>
void for_each_fragment(Callback callback) const
{
for (auto& line_box : line_boxes()) {
for (auto& fragment : line_box.fragments()) {
if (callback(fragment) == IterationDecision::Break)
return;
}
}
}
virtual void paint(PaintContext&, PaintPhase) const override;
virtual bool wants_mouse_events() const override { return false; }
virtual bool handle_mousewheel(Badge<EventHandler>, CSSPixelPoint, unsigned buttons, unsigned modifiers, int wheel_delta_x, int wheel_delta_y) override;
virtual Optional<HitTestResult> hit_test(CSSPixelPoint, HitTestType) const override;
protected:
PaintableWithLines(Layout::BlockContainer const&);
private:
Vector<Layout::LineBox> m_line_boxes;
};
}
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