Start on replacing path+style with shape in patherenderer

src/gpu/GrPathRenderer.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrPathRenderer_DEFINED
 #define GrPathRenderer_DEFINED
 
 #include "GrDrawContext.h"
 #include "GrPaint.h"
 #include "GrResourceProvider.h"
-#include "GrStyle.h"
+#include "GrShape.h"
 
 #include "SkDrawProcs.h"
 #include "SkTArray.h"
 
 class SkPath;
 class GrFixedClip;
 struct GrPoint;
 
 /**
  *  Base class for drawing paths into a GrDrawTarget.
@@ skipping 28 matching lines @@
     enum StencilSupport {
         kNoSupport_StencilSupport,
         kStencilOnly_StencilSupport,
         kNoRestriction_StencilSupport,
     };
 
     /**
      * This function is to get the stencil support for a particular path. The path's fill must
      * not be an inverse type. The path will always be filled and not stroked.
      *
-     * @param path      the path that will be drawn
+     * @param shape   the shape that will be drawn. Must be simple fill styled and non-inverse
+     *                filled.
      */
-    StencilSupport getStencilSupport(const SkPath& path) const {
+    StencilSupport getStencilSupport(const GrShape& shape) const {
+        SkDEBUGCODE(SkPath path;)
+        SkDEBUGCODE(shape.asPath(&path);)
+        SkASSERT(shape.style().isSimpleFill());
         SkASSERT(!path.isInverseFillType());
-        return this->onGetStencilSupport(path);
+        return this->onGetStencilSupport(shape);
     }
 
     /** Args to canDrawPath()
      *
      * fShaderCaps       The shader caps
      * fPipelineBuilder  The pipelineBuilder
      * fViewMatrix       The viewMatrix
-     * fPath             The path to draw
-     * fStyle            The styling info (path effect, stroking info)
+     * fShape            The shape to draw
      * fAntiAlias        True if anti-aliasing is required.
      */
     struct CanDrawPathArgs {
         const GrShaderCaps*         fShaderCaps;
         const SkMatrix*             fViewMatrix;
-        const SkPath*               fPath;
-        const GrStyle*              fStyle;
+        const GrShape*              fShape;
         bool                        fAntiAlias;
 
         // These next two are only used by GrStencilAndCoverPathRenderer
         bool                        fHasUserStencilSettings;
         bool                        fIsStencilBufferMSAA;
 
         void validate() const {
             SkASSERT(fShaderCaps);
             SkASSERT(fViewMatrix);
-            SkASSERT(fPath);
-            SkASSERT(fStyle);
-            SkASSERT(!fPath->isEmpty());
+            SkASSERT(fShape);
         }
     };
 
     /**
      * Returns true if this path renderer is able to render the path. Returning false allows the
      * caller to fallback to another path renderer This function is called when searching for a path
      * renderer capable of rendering a path.
      *
      * @return  true if the path can be drawn by this object, false otherwise.
      */
     bool canDrawPath(const CanDrawPathArgs& args) const {
         SkDEBUGCODE(args.validate();)
         return this->onCanDrawPath(args);
     }
 
     /**
      * Args to drawPath()
      *
      * fTarget                The target that the path will be rendered to
      * fResourceProvider      The resource provider for creating gpu resources to render the path
      * fPipelineBuilder       The pipelineBuilder
      * fClip                  The clip
      * fColor                 Color to render with
      * fViewMatrix            The viewMatrix
-     * fPath                  the path to draw.
-     * fStyle                 the style information (path effect, stroke info)
+     * fStyle                 The shape to draw
      * fAntiAlias             true if anti-aliasing is required.
      * fGammaCorrect          true if gamma-correct rendering is to be used.
      */
     struct DrawPathArgs {
         GrResourceProvider*         fResourceProvider;
         const GrPaint*              fPaint;
         const GrUserStencilSettings*fUserStencilSettings;
 
         GrDrawContext*              fDrawContext;
         const GrClip*               fClip;
         GrColor                     fColor;
         const SkMatrix*             fViewMatrix;
-        const SkPath*               fPath;
-        const GrStyle*              fStyle;
+        const GrShape*              fShape;
         bool                        fAntiAlias;
         bool                        fGammaCorrect;
 
         void validate() const {
             SkASSERT(fResourceProvider);
             SkASSERT(fPaint);
             SkASSERT(fUserStencilSettings);
             SkASSERT(fDrawContext);
             SkASSERT(fClip);
             SkASSERT(fViewMatrix);
-            SkASSERT(fPath);
-            SkASSERT(fStyle);
-            SkASSERT(!fPath->isEmpty());
+            SkASSERT(fShape);
         }
     };
 
     /**
      * Draws the path into the draw target. If getStencilSupport() would return kNoRestriction then
      * the subclass must respect the stencil settings of the GrPipelineBuilder.
      */
     bool drawPath(const DrawPathArgs& args) {
         SkDEBUGCODE(args.validate();)
 #ifdef SK_DEBUG
         CanDrawPathArgs canArgs;
         canArgs.fShaderCaps = args.fResourceProvider->caps()->shaderCaps();
         canArgs.fViewMatrix = args.fViewMatrix;
-        canArgs.fPath = args.fPath;
-        canArgs.fStyle = args.fStyle;
+        canArgs.fShape = args.fShape;
         canArgs.fAntiAlias = args.fAntiAlias;
 
         canArgs.fHasUserStencilSettings = !args.fUserStencilSettings->isUnused();
         canArgs.fIsStencilBufferMSAA = args.fDrawContext->isStencilBufferMultisampled();
         SkASSERT(this->canDrawPath(canArgs));
         if (!args.fUserStencilSettings->isUnused()) {
-            SkASSERT(kNoRestriction_StencilSupport == this->getStencilSupport(*args.fPath));
-            SkASSERT(args.fStyle->isSimpleFill());
+            SkPath path;
+            args.fShape->asPath(&path);
+            SkASSERT(args.fShape->style().isSimpleFill());
+            SkASSERT(kNoRestriction_StencilSupport == this->getStencilSupport(*args.fShape));
         }
 #endif
         return this->onDrawPath(args);
     }
 
     /* Args to stencilPath().
      *
      * fResourceProvider      The resource provider for creating gpu resources to render the path
      * fDrawContext           The target of the draws
      * fViewMatrix            Matrix applied to the path.
      * fPath                  The path to draw.
      * fIsAA                  Is the path to be drawn AA (only set when MSAA is available)
      */
     struct StencilPathArgs {
         GrResourceProvider* fResourceProvider;
         GrDrawContext*      fDrawContext;
         const GrFixedClip*  fClip;
         const SkMatrix*     fViewMatrix;
-        const SkPath*       fPath;
         bool                fIsAA;
+        const GrShape*      fShape;
 
         void validate() const {
             SkASSERT(fResourceProvider);
             SkASSERT(fDrawContext);
             SkASSERT(fViewMatrix);
-            SkASSERT(fPath);
-            SkASSERT(!fPath->isEmpty());
+            SkASSERT(fShape);
+            SkASSERT(fShape->style().isSimpleFill())
+            SkPath path;
+            fShape->asPath(&path);
+            SkASSERT(!path.isInverseFillType());
         }
     };
 
     /**
      * Draws the path to the stencil buffer. Assume the writable stencil bits are already
      * initialized to zero. The pixels inside the path will have non-zero stencil values afterwards.
      */
     void stencilPath(const StencilPathArgs& args) {
         SkDEBUGCODE(args.validate();)
-        SkASSERT(kNoSupport_StencilSupport != this->getStencilSupport(*args.fPath));
+        SkASSERT(kNoSupport_StencilSupport != this->getStencilSupport(*args.fShape));
         this->onStencilPath(args);
     }
 
     // Helper for determining if we can treat a thin stroke as a hairline w/ coverage.
     // If we can, we draw lots faster (raster device does this same test).
     static bool IsStrokeHairlineOrEquivalent(const GrStyle& style, const SkMatrix& matrix,
                                              SkScalar* outCoverage) {
         if (style.pathEffect()) {
             return false;
         }
@@ skipping 14 matching lines @@
     static void GetPathDevBounds(const SkPath& path,
                                  int devW,
                                  int devH,
                                  const SkMatrix& matrix,
                                  SkRect* bounds);
 
 private:
     /**
      * Subclass overrides if it has any limitations of stenciling support.
      */
-    virtual StencilSupport onGetStencilSupport(const SkPath&) const {
+    virtual StencilSupport onGetStencilSupport(const GrShape&) const {
         return kNoRestriction_StencilSupport;
     }
 
     /**
      * Subclass implementation of drawPath()
      */
     virtual bool onDrawPath(const DrawPathArgs& args) = 0;
 
     /**
      * Subclass implementation of canDrawPath()
@@ skipping 17 matching lines @@
 
         GrPaint paint;
 
         DrawPathArgs drawArgs;
         drawArgs.fResourceProvider = args.fResourceProvider;
         drawArgs.fPaint = &paint;
         drawArgs.fUserStencilSettings = &kIncrementStencil;
         drawArgs.fDrawContext = args.fDrawContext;
         drawArgs.fColor = GrColor_WHITE;
         drawArgs.fViewMatrix = args.fViewMatrix;
-        drawArgs.fPath = args.fPath;
-        drawArgs.fStyle = &GrStyle::SimpleFill();
+        drawArgs.fShape = args.fShape;
         drawArgs.fAntiAlias = false;  // In this case the MSAA handles the AA so we want to draw BW
         drawArgs.fGammaCorrect = false;
         this->drawPath(drawArgs);
     }
 
     typedef SkRefCnt INHERITED;
 };
 
 #endif