RenderScrollbarPart.h [plain text]
#pragma once
#include "RenderBlock.h"
#include "ScrollTypes.h"
namespace WebCore {
class RenderScrollbar;
class RenderScrollbarPart final : public RenderBlock {
public:
RenderScrollbarPart(Document&, RenderStyle&&, RenderScrollbar* = nullptr, ScrollbarPart = NoPart);
virtual ~RenderScrollbarPart();
const char* renderName() const override { return "RenderScrollbarPart"; }
bool requiresLayer() const override { return false; }
void layout() override;
void paintIntoRect(GraphicsContext&, const LayoutPoint&, const LayoutRect&);
LayoutUnit marginTop() const override { ASSERT(isIntegerValue(m_marginBox.top())); return m_marginBox.top(); }
LayoutUnit marginBottom() const override { ASSERT(isIntegerValue(m_marginBox.bottom())); return m_marginBox.bottom(); }
LayoutUnit marginLeft() const override { ASSERT(isIntegerValue(m_marginBox.left())); return m_marginBox.left(); }
LayoutUnit marginRight() const override { ASSERT(isIntegerValue(m_marginBox.right())); return m_marginBox.right(); }
RenderBox* rendererOwningScrollbar() const;
protected:
void styleDidChange(StyleDifference, const RenderStyle* oldStyle) override;
void imageChanged(WrappedImagePtr, const IntRect* = nullptr) override;
private:
bool isRenderScrollbarPart() const override { return true; }
void computePreferredLogicalWidths() override;
void layoutHorizontalPart();
void layoutVerticalPart();
void computeScrollbarWidth();
void computeScrollbarHeight();
RenderScrollbar* m_scrollbar;
ScrollbarPart m_part;
};
}
SPECIALIZE_TYPE_TRAITS_RENDER_OBJECT(RenderScrollbarPart, isRenderScrollbarPart())