Line data    Source code

       1             : /*
       2             :  * Copyright 2016 Google Inc.
       3             :  *
       4             :  * Use of this source code is governed by a BSD-style license that can be
       5             :  * found in the LICENSE file.
       6             :  */
       7             : 
       8             : #ifndef SkNoDrawCanvas_DEFINED
       9             : #define SkNoDrawCanvas_DEFINED
      10             : 
      11             : #include "SkCanvas.h"
      12             : #include "SkVertices.h"
      13             : 
      14             : struct SkIRect;
      15             : 
      16             : // SkNoDrawCanvas is a helper for SkCanvas subclasses which do not need to
      17             : // actually rasterize (e.g., analysis of the draw calls).
      18             : //
      19             : // It provides the following simplifications:
      20             : //
      21             : //   * not backed by any device/pixels
      22             : //   * conservative clipping (clipping calls only use rectangles)
      23             : //
      24           0 : class SK_API SkNoDrawCanvas : public SkCanvas {
      25             : public:
      26             :     SkNoDrawCanvas(int width, int height);
      27             : 
      28             :     // TODO: investigate the users of this ctor.
      29             :     SkNoDrawCanvas(const SkIRect&);
      30             : 
      31             : protected:
      32             :     SaveLayerStrategy getSaveLayerStrategy(const SaveLayerRec& rec) override;
      33             : 
      34             :     // No-op overrides for aborting rasterization earlier than SkNullBlitter.
      35           0 :     void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&) override {}
      36           0 :     void onDrawDrawable(SkDrawable*, const SkMatrix*) override {}
      37           0 :     void onDrawText(const void*, size_t, SkScalar, SkScalar, const SkPaint&) override {}
      38           0 :     void onDrawPosText(const void*, size_t, const SkPoint[], const SkPaint&) override {}
      39           0 :     void onDrawPosTextH(const void*, size_t, const SkScalar[], SkScalar, const SkPaint&) override {}
      40           0 :     void onDrawTextOnPath(const void*, size_t, const SkPath&, const SkMatrix*,
      41           0 :                           const SkPaint&) override {}
      42           0 :     void onDrawTextRSXform(const void*, size_t, const SkRSXform[], const SkRect*,
      43           0 :                            const SkPaint&) override {}
      44           0 :     void onDrawTextBlob(const SkTextBlob*, SkScalar, SkScalar, const SkPaint&) override {}
      45           0 :     void onDrawPatch(const SkPoint[12], const SkColor[4], const SkPoint[4], SkBlendMode,
      46           0 :                      const SkPaint&) override {}
      47             : 
      48           0 :     void onDrawPaint(const SkPaint&) override {}
      49           0 :     void onDrawPoints(PointMode, size_t, const SkPoint[], const SkPaint&) override {}
      50           0 :     void onDrawRect(const SkRect&, const SkPaint&) override {}
      51           0 :     void onDrawRegion(const SkRegion&, const SkPaint&) override {}
      52           0 :     void onDrawOval(const SkRect&, const SkPaint&) override {}
      53           0 :     void onDrawArc(const SkRect&, SkScalar, SkScalar, bool, const SkPaint&) override {}
      54           0 :     void onDrawRRect(const SkRRect&, const SkPaint&) override {}
      55           0 :     void onDrawPath(const SkPath&, const SkPaint&) override {}
      56           0 :     void onDrawBitmap(const SkBitmap&, SkScalar, SkScalar, const SkPaint*) override {}
      57           0 :     void onDrawBitmapRect(const SkBitmap&, const SkRect*, const SkRect&, const SkPaint*,
      58           0 :                           SrcRectConstraint) override {}
      59           0 :     void onDrawImage(const SkImage*, SkScalar, SkScalar, const SkPaint*) override {}
      60           0 :     void onDrawImageRect(const SkImage*, const SkRect*, const SkRect&, const SkPaint*,
      61           0 :                          SrcRectConstraint) override {}
      62           0 :     void onDrawImageNine(const SkImage*, const SkIRect&, const SkRect&, const SkPaint*) override {}
      63           0 :     void onDrawBitmapNine(const SkBitmap&, const SkIRect&, const SkRect&,
      64           0 :                           const SkPaint*) override {}
      65           0 :     void onDrawImageLattice(const SkImage*, const Lattice&, const SkRect&,
      66           0 :                             const SkPaint*) override {}
      67           0 :     void onDrawBitmapLattice(const SkBitmap&, const Lattice&, const SkRect&,
      68           0 :                              const SkPaint*) override {}
      69           0 :     void onDrawVerticesObject(const SkVertices*, SkBlendMode, const SkPaint&) override {}
      70           0 :     void onDrawAtlas(const SkImage*, const SkRSXform[], const SkRect[], const SkColor[],
      71           0 :                      int, SkBlendMode, const SkRect*, const SkPaint*) override {}
      72             : 
      73             : private:
      74             :     typedef SkCanvas INHERITED;
      75             : };
      76             : 
      77             : #endif // SkNoDrawCanvas_DEFINED