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      1 
      2 /*
      3  * Copyright 2011 Google Inc.
      4  *
      5  * Use of this source code is governed by a BSD-style license that can be
      6  * found in the LICENSE file.
      7  */
      8 
      9 #ifndef SkNWayCanvas_DEFINED
     10 #define SkNWayCanvas_DEFINED
     11 
     12 #include "SkCanvas.h"
     13 
     14 class SkNWayCanvas : public SkCanvas {
     15 public:
     16     SkNWayCanvas(int width, int height);
     17     virtual ~SkNWayCanvas();
     18 
     19     void addCanvas(SkCanvas*);
     20     void removeCanvas(SkCanvas*);
     21     void removeAll();
     22 
     23     ///////////////////////////////////////////////////////////////////////////
     24     // These are forwarded to the N canvases we're referencing
     25 
     26     virtual int save(SaveFlags) SK_OVERRIDE;
     27     virtual int saveLayer(const SkRect* bounds, const SkPaint*,
     28                           SaveFlags) SK_OVERRIDE;
     29     virtual void restore() SK_OVERRIDE;
     30     virtual bool translate(SkScalar dx, SkScalar dy) SK_OVERRIDE;
     31     virtual bool scale(SkScalar sx, SkScalar sy) SK_OVERRIDE;
     32     virtual bool rotate(SkScalar degrees) SK_OVERRIDE;
     33     virtual bool skew(SkScalar sx, SkScalar sy) SK_OVERRIDE;
     34     virtual bool concat(const SkMatrix& matrix) SK_OVERRIDE;
     35     virtual void setMatrix(const SkMatrix& matrix) SK_OVERRIDE;
     36     virtual bool clipRect(const SkRect&, SkRegion::Op, bool) SK_OVERRIDE;
     37     virtual bool clipPath(const SkPath&, SkRegion::Op, bool) SK_OVERRIDE;
     38     virtual bool clipRegion(const SkRegion& deviceRgn,
     39                             SkRegion::Op) SK_OVERRIDE;
     40 
     41     virtual void drawPaint(const SkPaint& paint) SK_OVERRIDE;
     42     virtual void drawPoints(PointMode mode, size_t count, const SkPoint pts[],
     43                             const SkPaint&) SK_OVERRIDE;
     44     virtual void drawRect(const SkRect& rect, const SkPaint&) SK_OVERRIDE;
     45     virtual void drawPath(const SkPath& path, const SkPaint&) SK_OVERRIDE;
     46     virtual void drawBitmap(const SkBitmap& bitmap, SkScalar left, SkScalar top,
     47                             const SkPaint*) SK_OVERRIDE;
     48     virtual void drawBitmapRect(const SkBitmap& bitmap, const SkIRect* src,
     49                                 const SkRect& dst, const SkPaint*) SK_OVERRIDE;
     50     virtual void drawBitmapMatrix(const SkBitmap& bitmap, const SkMatrix& m,
     51                                   const SkPaint*) SK_OVERRIDE;
     52     virtual void drawSprite(const SkBitmap& bitmap, int left, int top,
     53                             const SkPaint*) SK_OVERRIDE;
     54     virtual void drawText(const void* text, size_t byteLength, SkScalar x,
     55                           SkScalar y, const SkPaint&) SK_OVERRIDE;
     56     virtual void drawPosText(const void* text, size_t byteLength,
     57                              const SkPoint pos[], const SkPaint&) SK_OVERRIDE;
     58     virtual void drawPosTextH(const void* text, size_t byteLength,
     59                               const SkScalar xpos[], SkScalar constY,
     60                               const SkPaint&) SK_OVERRIDE;
     61     virtual void drawTextOnPath(const void* text, size_t byteLength,
     62                                 const SkPath& path, const SkMatrix* matrix,
     63                                 const SkPaint&) SK_OVERRIDE;
     64     virtual void drawPicture(SkPicture&) SK_OVERRIDE;
     65     virtual void drawVertices(VertexMode vmode, int vertexCount,
     66                               const SkPoint vertices[], const SkPoint texs[],
     67                               const SkColor colors[], SkXfermode* xmode,
     68                               const uint16_t indices[], int indexCount,
     69                               const SkPaint&) SK_OVERRIDE;
     70 
     71     virtual SkBounder* setBounder(SkBounder*) SK_OVERRIDE;
     72     virtual SkDrawFilter* setDrawFilter(SkDrawFilter*) SK_OVERRIDE;
     73 
     74 private:
     75     SkTDArray<SkCanvas*> fList;
     76 
     77     class Iter;
     78 
     79     typedef SkCanvas INHERITED;
     80 };
     81 
     82 
     83 #endif
     84 
     85