add asABlur() to maskfilters, so devices like gpu and pdf can query them.

git-svn-id: http://skia.googlecode.com/svn/trunk@1816 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 17 insertions, 2 deletions

diff --git a/src/effects/SkBlurMaskFilter.cpp b/src/effects/SkBlurMaskFilter.cpp
index 41e04b8a53..c53e04a1f5 100644
--- a/src/effects/SkBlurMaskFilter.cpp
+++ b/src/effects/SkBlurMaskFilter.cpp
@@ -27,11 +27,10 @@ public:
     // overrides from SkMaskFilter
     virtual SkMask::Format getFormat();
     virtual bool filterMask(SkMask* dst, const SkMask& src, const SkMatrix& matrix, SkIPoint* margin);
+    virtual BlurType asABlur(BlurInfo*);
 
     // overrides from SkFlattenable
-    // This method is not exported to java.
     virtual Factory getFactory();
-    // This method is not exported to java.
     virtual void flatten(SkFlattenableWriteBuffer&);
 
     static SkFlattenable* CreateProc(SkFlattenableReadBuffer&);
@@ -138,6 +137,22 @@ void SkBlurMaskFilterImpl::flatten(SkFlattenableWriteBuffer& buffer)
     buffer.write32(fBlurFlags);
 }
 
+static const SkMaskFilter::BlurType gBlurStyle2BlurType[] = {
+    SkMaskFilter::kNormal_BlurType,
+    SkMaskFilter::kSolid_BlurType,
+    SkMaskFilter::kOuter_BlurType,
+    SkMaskFilter::kInner_BlurType,
+};
+
+SkMaskFilter::BlurType SkBlurMaskFilterImpl::asABlur(BlurInfo* info) {
+    if (info) {
+        info->fRadius = fRadius;
+        info->fIgnoreTransform = SkToBool(fBlurFlags & SkBlurMaskFilter::kIgnoreTransform_BlurFlag);
+        info->fHighQuality = SkToBool(fBlurFlags & SkBlurMaskFilter::kHighQuality_BlurFlag);
+    }
+    return gBlurStyle2BlurType[fBlurStyle];
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 
 static SkFlattenable::Registrar gReg("SkBlurMaskFilter",