SkCanvas interface for drawing a patch.

src/core/SkCanvas.cpp

Index: src/core/SkCanvas.cpp
diff --git a/src/core/SkCanvas.cpp b/src/core/SkCanvas.cpp
index 504c9908abbb8015a65e7bfd7b77a2662d21154a..7ec1bb8c850fa5fbcddd95a0ddec35cf9cd7fc33 100644
--- a/src/core/SkCanvas.cpp
+++ b/src/core/SkCanvas.cpp
@@ -2263,6 +2263,28 @@ void SkCanvas::drawVertices(VertexMode vmode, int vertexCount,
     LOOPER_END
 }
 
+void SkCanvas::drawPatch(const SkPatch& patch, const SkPaint& paint) {
+    
+    // Since a patch is always within the convex hull of the control points, we discard it when its
+    // bounding rectangle is completely outside the current clip.
+    SkRect bounds;
+    bounds.set(patch.getControlPoints(), 12);
+    if (this->quickReject(bounds)) {
+        return;
+    }
+    
+    SkMatrix mat = this->getTotalMatrix();
+    SkScalar scaleX = mat.getScaleX(), scaleY = mat.getScaleY();
+    
+    LOOPER_BEGIN(paint, SkDrawFilter::kPath_Type, NULL)

[bsalomon, 2014/07/28 20:56:26]

Should we add a new SkDrawFilter::kPatch? Not really sure what this enum is used
for, though.

[dandov, 2014/07/29 18:45:46]

Mike said that for now I could just leave it as a path, but I'll ask him how to
add it when he comes back. 

+    
+    while (iter.next()) {
+        iter.fDevice->drawPatch(iter, patch, paint);
+    }
+    
+    LOOPER_END
+}
+
 //////////////////////////////////////////////////////////////////////////////
 // These methods are NOT virtual, and therefore must call back into virtual
 // methods, rather than actually drawing themselves.