diff options
Diffstat (limited to 'include/core/SkXfermode.h')
| -rw-r--r-- | include/core/SkXfermode.h | 32 |
1 files changed, 31 insertions, 1 deletions
diff --git a/include/core/SkXfermode.h b/include/core/SkXfermode.h index 2d12b3c931..8319ad6882 100644 --- a/include/core/SkXfermode.h +++ b/include/core/SkXfermode.h @@ -8,8 +8,9 @@ #ifndef SkXfermode_DEFINED #define SkXfermode_DEFINED -#include "SkFlattenable.h" +#include "SkBlendMode.h" #include "SkColor.h" +#include "SkFlattenable.h" class GrFragmentProcessor; class GrTexture; @@ -112,6 +113,9 @@ public: * Gets the name of the Mode as a string. */ static const char* ModeName(Mode); + static const char* ModeName(SkBlendMode mode) { + return ModeName(Mode(mode)); + } /** * If the xfermode is one of the modes in the Mode enum, then asMode() @@ -157,6 +161,31 @@ public: } #endif + /** + * Skia maintains global xfermode objects corresponding to each BlendMode. This returns a + * ptr to that global xfermode (or null if the mode is srcover). Thus the caller may use + * the returned ptr, but it should leave its refcnt untouched. + */ + static SkXfermode* Peek(SkBlendMode mode) { + sk_sp<SkXfermode> xfer = Make(mode); + if (!xfer) { + SkASSERT(SkBlendMode::kSrcOver == mode); + return nullptr; + } + SkASSERT(!xfer->unique()); + return xfer.get(); + } + + static sk_sp<SkXfermode> Make(SkBlendMode bm) { + return Make((Mode)bm); + } + + SkBlendMode blend() const { + Mode mode; + SkAssertResult(this->asMode(&mode)); + return (SkBlendMode)mode; + } + /** Return a function pointer to a routine that applies the specified porter-duff transfer mode. */ @@ -215,6 +244,7 @@ public: static bool IsOpaque(const sk_sp<SkXfermode>& xfer, SrcColorOpacity opacityType) { return IsOpaque(xfer.get(), opacityType); } + static bool IsOpaque(SkBlendMode, SrcColorOpacity); #if SK_SUPPORT_GPU /** Used by the SkXfermodeImageFilter to blend two colors via a GrFragmentProcessor. |