mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 20:22:45 +00:00
f915aa70cd
Decoupling painting command executor from RecordingPainter allows to introduce painters other than CPU Gfx::Painter :)
107 lines
3.9 KiB
C++
107 lines
3.9 KiB
C++
/*
|
|
* Copyright (c) 2018-2022, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <LibWeb/Layout/ImageBox.h>
|
|
#include <LibWeb/Painting/PaintingCommandExecutorCPU.h>
|
|
#include <LibWeb/Painting/SVGGraphicsPaintable.h>
|
|
#include <LibWeb/Painting/StackingContext.h>
|
|
#include <LibWeb/SVG/SVGMaskElement.h>
|
|
#include <LibWeb/SVG/SVGSVGElement.h>
|
|
|
|
namespace Web::Painting {
|
|
|
|
JS::NonnullGCPtr<SVGGraphicsPaintable> SVGGraphicsPaintable::create(Layout::SVGGraphicsBox const& layout_box)
|
|
{
|
|
return layout_box.heap().allocate_without_realm<SVGGraphicsPaintable>(layout_box);
|
|
}
|
|
|
|
SVGGraphicsPaintable::SVGGraphicsPaintable(Layout::SVGGraphicsBox const& layout_box)
|
|
: SVGPaintable(layout_box)
|
|
{
|
|
}
|
|
|
|
bool SVGGraphicsPaintable::forms_unconnected_subtree() const
|
|
{
|
|
// Masks should not be painted (i.e. reachable) unless referenced by another element.
|
|
return is<SVG::SVGMaskElement>(dom_node());
|
|
}
|
|
|
|
Layout::SVGGraphicsBox const& SVGGraphicsPaintable::layout_box() const
|
|
{
|
|
return static_cast<Layout::SVGGraphicsBox const&>(layout_node());
|
|
}
|
|
|
|
Optional<CSSPixelRect> SVGGraphicsPaintable::get_masking_area() const
|
|
{
|
|
auto const& graphics_element = verify_cast<SVG::SVGGraphicsElement const>(*dom_node());
|
|
auto mask = graphics_element.mask();
|
|
if (!mask)
|
|
return {};
|
|
auto target_area = [&] {
|
|
auto mask_units = mask->mask_units();
|
|
if (mask_units == SVG::MaskUnits::UserSpaceOnUse) {
|
|
auto const* svg_element = graphics_element.shadow_including_first_ancestor_of_type<SVG::SVGSVGElement>();
|
|
return svg_element->paintable_box()->absolute_border_box_rect();
|
|
} else {
|
|
VERIFY(mask_units == SVG::MaskUnits::ObjectBoundingBox);
|
|
return absolute_border_box_rect();
|
|
}
|
|
}();
|
|
return mask->resolve_masking_area(target_area);
|
|
}
|
|
|
|
static Gfx::Bitmap::MaskKind mask_type_to_gfx_mask_kind(CSS::MaskType mask_type)
|
|
{
|
|
switch (mask_type) {
|
|
case CSS::MaskType::Alpha:
|
|
return Gfx::Bitmap::MaskKind::Alpha;
|
|
case CSS::MaskType::Luminance:
|
|
return Gfx::Bitmap::MaskKind::Luminance;
|
|
default:
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
}
|
|
|
|
Optional<Gfx::Bitmap::MaskKind> SVGGraphicsPaintable::get_mask_type() const
|
|
{
|
|
auto const& graphics_element = verify_cast<SVG::SVGGraphicsElement const>(*dom_node());
|
|
auto mask = graphics_element.mask();
|
|
if (!mask)
|
|
return {};
|
|
return mask_type_to_gfx_mask_kind(mask->layout_node()->computed_values().mask_type());
|
|
}
|
|
|
|
RefPtr<Gfx::Bitmap> SVGGraphicsPaintable::calculate_mask(PaintContext& context, CSSPixelRect const& masking_area) const
|
|
{
|
|
auto const& graphics_element = verify_cast<SVG::SVGGraphicsElement const>(*dom_node());
|
|
auto mask = graphics_element.mask();
|
|
VERIFY(mask);
|
|
if (mask->mask_content_units() != SVG::MaskContentUnits::UserSpaceOnUse) {
|
|
dbgln("SVG: maskContentUnits=objectBoundingBox is not supported");
|
|
return {};
|
|
}
|
|
auto mask_rect = context.enclosing_device_rect(masking_area);
|
|
RefPtr<Gfx::Bitmap> mask_bitmap = {};
|
|
if (mask && mask->layout_node() && is<PaintableBox>(mask->layout_node()->paintable())) {
|
|
auto& mask_paintable = static_cast<PaintableBox const&>(*mask->layout_node()->paintable());
|
|
auto mask_bitmap_or_error = Gfx::Bitmap::create(Gfx::BitmapFormat::BGRA8888, mask_rect.size().to_type<int>());
|
|
if (mask_bitmap_or_error.is_error())
|
|
return {};
|
|
mask_bitmap = mask_bitmap_or_error.release_value();
|
|
{
|
|
RecordingPainter painter;
|
|
painter.translate(-mask_rect.location().to_type<int>());
|
|
auto paint_context = context.clone(painter);
|
|
paint_context.set_svg_transform(graphics_element.get_transform());
|
|
StackingContext::paint_node_as_stacking_context(mask_paintable, paint_context);
|
|
PaintingCommandExecutorCPU executor { *mask_bitmap };
|
|
painter.execute(executor);
|
|
}
|
|
}
|
|
return mask_bitmap;
|
|
}
|
|
|
|
}
|