1aea8f116b
This allows you to iterate a subtree and get a callback for every node where is<T>(node) == true. This makes for quite pleasant DOM traversal.
41 lines
1.3 KiB
C++
41 lines
1.3 KiB
C++
#include <LibHTML/Dump.h>
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#include <LibHTML/Frame.h>
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#include <LibHTML/Layout/LayoutDocument.h>
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#include <LibHTML/Layout/LayoutImage.h>
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LayoutDocument::LayoutDocument(const Document& document, NonnullRefPtr<StyleProperties> style)
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: LayoutBlock(&document, move(style))
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{
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}
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LayoutDocument::~LayoutDocument()
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{
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}
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void LayoutDocument::layout()
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{
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ASSERT(document().frame());
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rect().set_width(document().frame()->size().width());
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LayoutNode::layout();
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ASSERT(!children_are_inline());
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int lowest_bottom = 0;
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for_each_child([&](auto& child) {
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ASSERT(is<LayoutBlock>(child));
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auto& child_block = to<LayoutBlock>(child);
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if (child_block.rect().bottom() > lowest_bottom)
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lowest_bottom = child_block.rect().bottom();
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});
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rect().set_bottom(lowest_bottom);
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}
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void LayoutDocument::did_set_viewport_rect(Badge<Frame>, const Rect& a_viewport_rect)
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{
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FloatRect viewport_rect(a_viewport_rect.x(), a_viewport_rect.y(), a_viewport_rect.width(), a_viewport_rect.height());
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for_each_in_subtree_of_type<LayoutImage>([&](auto& layout_image) {
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const_cast<HTMLImageElement&>(layout_image.node()).set_volatile({}, !viewport_rect.intersects(layout_image.rect()));
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return IterationDecision::Continue;
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});
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}
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