start to chip away at friending of GrAtlasTextBatch/GrAtlasTextBlob

src/gpu/batches/GrAtlasTextBatch.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrAtlasTextBatch_DEFINED
 #define GrAtlasTextBatch_DEFINED
 
@@ skipping 63 matching lines @@
     }
 
     // to avoid even the initial copy of the struct, we have a getter for the first item which
     // is used to seed the batch with its initial geometry.  After seeding, the client should call
     // init() so the Batch can initialize itself
     Geometry& geometry() { return fGeoData[0]; }
 
     void init() {
         const Geometry& geo = fGeoData[0];
         fBatch.fColor = geo.fColor;
-        fBatch.fViewMatrix = geo.fBlob->fViewMatrix;
+        fBatch.fViewMatrix = geo.fBlob->viewMatrix();
 
-        // We don't yet position distance field text on the cpu, so we have to map the vertex bounds
-        // into device space.
-        // We handle vertex bounds differently for distance field text and bitmap text because
-        // the vertex bounds of bitmap text are in device space.  If we are flushing multiple runs
-        // from one blob then we are going to pay the price here of mapping the rect for each run.
-        const Run& run = geo.fBlob->fRuns[geo.fRun];
-        SkRect bounds = run.fSubRunInfo[geo.fSubRun].vertexBounds();
-        if (run.fSubRunInfo[geo.fSubRun].drawAsDistanceFields()) {
-            // Distance field text is positioned with the (X,Y) as part of the glyph position,
-            // and currently the view matrix is applied on the GPU
-            bounds.offset(geo.fBlob->fX - geo.fBlob->fInitialX,
-                          geo.fBlob->fY - geo.fBlob->fInitialY);
-            fBatch.fViewMatrix.mapRect(&bounds);
-            this->setBounds(bounds);
-        } else {
-            // Bitmap text is fully positioned on the CPU, and offset by an (X,Y) translate in
-            // device space.
-            SkMatrix boundsMatrix = geo.fBlob->fInitialViewMatrixInverse;
-
-            boundsMatrix.postTranslate(-geo.fBlob->fInitialX, -geo.fBlob->fInitialY);
-
-            boundsMatrix.postTranslate(geo.fBlob->fX, geo.fBlob->fY);
-
-            boundsMatrix.postConcat(geo.fBlob->fViewMatrix);
-            boundsMatrix.mapRect(&bounds);
-
-            // Due to floating point numerical inaccuracies, we have to round out here
-            SkRect roundedOutBounds;
-            bounds.roundOut(&roundedOutBounds);
-            this->setBounds(roundedOutBounds);
-        }
+        geo.fBlob->computeSubRunBounds(&fBounds, geo.fRun, geo.fSubRun);
     }
 
     const char* name() const override { return "TextBatch"; }
 
     SkString dumpInfo() const override;
 
 protected:
     void computePipelineOptimizations(GrInitInvariantOutput* color, 
                                       GrInitInvariantOutput* coverage,
                                       GrBatchToXPOverrides* overrides) const override;
@@ skipping 91 matching lines @@
     GrBatchFontCache* fFontCache;
 
     // Distance field properties
     SkAutoTUnref<const GrDistanceFieldAdjustTable> fDistanceAdjustTable;
     SkColor fFilteredColor;
 
     typedef GrVertexBatch INHERITED;
 };
 
 #endif