mirror of
https://github.com/RGBCube/serenity
synced 2025-05-22 18:25:07 +00:00
d296992fb3
Eventually we should not need the layout tree for anything when painting and this code will only look at the paint tree. For now, this is just another step in that direction.
60 lines
1.9 KiB
C++
60 lines
1.9 KiB
C++
/*
|
|
* Copyright (c) 2023, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <LibWeb/Layout/Viewport.h>
|
|
#include <LibWeb/Painting/StackingContext.h>
|
|
#include <LibWeb/Painting/ViewportPaintable.h>
|
|
|
|
namespace Web::Painting {
|
|
|
|
JS::NonnullGCPtr<ViewportPaintable> ViewportPaintable::create(Layout::Viewport const& layout_viewport)
|
|
{
|
|
return layout_viewport.heap().allocate_without_realm<ViewportPaintable>(layout_viewport);
|
|
}
|
|
|
|
ViewportPaintable::ViewportPaintable(Layout::Viewport const& layout_viewport)
|
|
: PaintableWithLines(layout_viewport)
|
|
{
|
|
}
|
|
|
|
ViewportPaintable::~ViewportPaintable() = default;
|
|
|
|
void ViewportPaintable::build_stacking_context_tree_if_needed()
|
|
{
|
|
if (stacking_context())
|
|
return;
|
|
build_stacking_context_tree();
|
|
}
|
|
|
|
void ViewportPaintable::build_stacking_context_tree()
|
|
{
|
|
set_stacking_context(make<StackingContext>(*this, nullptr, 0));
|
|
|
|
size_t index_in_tree_order = 1;
|
|
for_each_in_subtree_of_type<PaintableBox>([&](PaintableBox const& paintable) {
|
|
auto& paintable_box = const_cast<PaintableBox&>(paintable);
|
|
paintable_box.invalidate_stacking_context();
|
|
if (!paintable_box.layout_box().establishes_stacking_context()) {
|
|
VERIFY(!paintable_box.stacking_context());
|
|
return TraversalDecision::Continue;
|
|
}
|
|
auto* parent_context = paintable_box.enclosing_stacking_context();
|
|
VERIFY(parent_context);
|
|
paintable_box.set_stacking_context(make<Painting::StackingContext>(paintable_box, parent_context, index_in_tree_order++));
|
|
return TraversalDecision::Continue;
|
|
});
|
|
|
|
stacking_context()->sort();
|
|
}
|
|
|
|
void ViewportPaintable::paint_all_phases(PaintContext& context)
|
|
{
|
|
build_stacking_context_tree_if_needed();
|
|
context.painter().translate(-context.device_viewport_rect().location().to_type<int>());
|
|
stacking_context()->paint(context);
|
|
}
|
|
|
|
}
|