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