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LibWeb: Move painting logic from Layout::Viewport to ViewportPaintable
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c01c4b41e2
commit
8bb275f2ea
9 changed files with 54 additions and 48 deletions
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@ -5,6 +5,7 @@
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*/
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#include <LibWeb/Layout/Viewport.h>
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#include <LibWeb/Painting/StackingContext.h>
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#include <LibWeb/Painting/ViewportPaintable.h>
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namespace Web::Painting {
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@ -21,4 +22,39 @@ ViewportPaintable::ViewportPaintable(Layout::Viewport const& layout_viewport)
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ViewportPaintable::~ViewportPaintable() = default;
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void ViewportPaintable::build_stacking_context_tree_if_needed()
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{
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if (stacking_context())
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return;
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build_stacking_context_tree();
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}
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void ViewportPaintable::build_stacking_context_tree()
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{
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set_stacking_context(make<StackingContext>(layout_box(), nullptr, 0));
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size_t index_in_tree_order = 1;
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for_each_in_subtree_of_type<PaintableBox>([&](PaintableBox const& paintable) {
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auto& paintable_box = const_cast<PaintableBox&>(paintable);
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paintable_box.invalidate_stacking_context();
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if (!paintable_box.layout_box().establishes_stacking_context()) {
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VERIFY(!paintable_box.stacking_context());
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return TraversalDecision::Continue;
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}
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auto* parent_context = paintable_box.enclosing_stacking_context();
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VERIFY(parent_context);
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paintable_box.set_stacking_context(make<Painting::StackingContext>(paintable_box.layout_box(), parent_context, index_in_tree_order++));
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return TraversalDecision::Continue;
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});
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stacking_context()->sort();
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}
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void ViewportPaintable::paint_all_phases(PaintContext& context)
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{
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build_stacking_context_tree_if_needed();
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context.painter().translate(-context.device_viewport_rect().location().to_type<int>());
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stacking_context()->paint(context);
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}
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}
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