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26 #ifndef WebScrollbarThemePainter_h
27 #define WebScrollbarThemePainter_h
29 #include "WebCanvas.h"
41 class WebScrollbarThemePainter {
43 WebScrollbarThemePainter() : m_theme(0) { }
44 WebScrollbarThemePainter(const WebScrollbarThemePainter& painter) { assign(painter); }
45 virtual ~WebScrollbarThemePainter() { }
46 WebScrollbarThemePainter& operator=(const WebScrollbarThemePainter& painter)
52 BLINK_EXPORT void assign(const WebScrollbarThemePainter&);
54 BLINK_EXPORT void paintScrollbarBackground(WebCanvas*, const WebRect&);
55 BLINK_EXPORT void paintTrackBackground(WebCanvas*, const WebRect&);
56 BLINK_EXPORT void paintBackTrackPart(WebCanvas*, const WebRect&);
57 BLINK_EXPORT void paintForwardTrackPart(WebCanvas*, const WebRect&);
58 BLINK_EXPORT void paintBackButtonStart(WebCanvas*, const WebRect&);
59 BLINK_EXPORT void paintBackButtonEnd(WebCanvas*, const WebRect&);
60 BLINK_EXPORT void paintForwardButtonStart(WebCanvas*, const WebRect&);
61 BLINK_EXPORT void paintForwardButtonEnd(WebCanvas*, const WebRect&);
62 BLINK_EXPORT void paintTickmarks(WebCanvas*, const WebRect&);
63 BLINK_EXPORT void paintThumb(WebCanvas*, const WebRect&);
65 #if BLINK_IMPLEMENTATION
66 WebScrollbarThemePainter(WebCore::ScrollbarTheme*, WebCore::Scrollbar*);
70 // The theme is not owned by this class. It is assumed that the theme is a
71 // static pointer and its lifetime is essentially infinite. The functions
72 // called from the painter may not be thread-safe, so all calls must be made
73 // from the same thread that it is created on.
74 WebCore::ScrollbarTheme* m_theme;
76 // It is assumed that the constructor of this paint object is responsible
77 // for the lifetime of this scrollbar. The painter has to use the real
78 // scrollbar (and not a WebScrollbar wrapper) due to static_casts for
79 // RenderScrollbar and pointer-based HashMap lookups for Lion scrollbars.
80 WebCore::Scrollbar* m_scrollbar;