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26 #ifndef PlatformContextCairo_h
27 #define PlatformContextCairo_h
29 #include "ContextShadow.h"
30 #include "RefPtrCairo.h"
34 // In Cairo image masking is immediate, so to emulate image clipping we must save masking
35 // details as part of the context state and apply them during platform restore.
36 class ImageMaskInformation {
38 void update(cairo_surface_t* maskSurface, const FloatRect& maskRect)
40 m_maskSurface = maskSurface;
41 m_maskRect = maskRect;
44 bool isValid() const { return m_maskSurface; }
45 cairo_surface_t* maskSurface() const { return m_maskSurface.get(); }
46 const FloatRect& maskRect() const { return m_maskRect; }
49 RefPtr<cairo_surface_t> m_maskSurface;
53 // Much like PlatformContextSkia in the Skia port, this class holds information that
54 // would normally be private to GraphicsContext, except that we want to allow access
55 // to it in Font and Image code. This allows us to separate the concerns of Cairo-specific
56 // code from the platform-independent GraphicsContext.
58 class PlatformContextCairo {
59 WTF_MAKE_NONCOPYABLE(PlatformContextCairo);
61 PlatformContextCairo(cairo_t*);
63 cairo_t* cr() { return m_cr.get(); }
64 void setCr(cairo_t* cr) { m_cr = cr; }
68 void pushImageMask(cairo_surface_t*, const FloatRect&);
72 Vector<ImageMaskInformation> m_maskImageStack;
75 } // namespace WebCore
77 #endif // PlatformContextCairo_h