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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 clipRRect(const SkRRect&, SkRegion::Op, bool) SK_OVERRIDE;
     38     virtual bool clipPath(const SkPath&, SkRegion::Op, bool) SK_OVERRIDE;
     39     virtual bool clipRegion(const SkRegion& deviceRgn,
     40                             SkRegion::Op) SK_OVERRIDE;
     41 
     42     virtual void drawPaint(const SkPaint& paint) SK_OVERRIDE;
     43     virtual void drawPoints(PointMode mode, size_t count, const SkPoint pts[],
     44                             const SkPaint&) SK_OVERRIDE;
     45     virtual void drawOval(const SkRect&, const SkPaint&) SK_OVERRIDE;
     46     virtual void drawRect(const SkRect&, const SkPaint&) SK_OVERRIDE;
     47     virtual void drawRRect(const SkRRect&, const SkPaint&) SK_OVERRIDE;
     48     virtual void drawPath(const SkPath& path, const SkPaint&) SK_OVERRIDE;
     49     virtual void drawBitmap(const SkBitmap& bitmap, SkScalar left, SkScalar top,
     50                             const SkPaint*) SK_OVERRIDE;
     51     virtual void drawBitmapRectToRect(const SkBitmap& bitmap, const SkRect* src,
     52                                 const SkRect& dst, const SkPaint*) SK_OVERRIDE;
     53     virtual void drawBitmapMatrix(const SkBitmap& bitmap, const SkMatrix& m,
     54                                   const SkPaint*) SK_OVERRIDE;
     55     virtual void drawSprite(const SkBitmap& bitmap, int left, int top,
     56                             const SkPaint*) SK_OVERRIDE;
     57     virtual void drawText(const void* text, size_t byteLength, SkScalar x,
     58                           SkScalar y, const SkPaint&) SK_OVERRIDE;
     59     virtual void drawPosText(const void* text, size_t byteLength,
     60                              const SkPoint pos[], const SkPaint&) SK_OVERRIDE;
     61     virtual void drawPosTextH(const void* text, size_t byteLength,
     62                               const SkScalar xpos[], SkScalar constY,
     63                               const SkPaint&) SK_OVERRIDE;
     64     virtual void drawTextOnPath(const void* text, size_t byteLength,
     65                                 const SkPath& path, const SkMatrix* matrix,
     66                                 const SkPaint&) SK_OVERRIDE;
     67     virtual void drawPicture(SkPicture&) SK_OVERRIDE;
     68     virtual void drawVertices(VertexMode vmode, int vertexCount,
     69                               const SkPoint vertices[], const SkPoint texs[],
     70                               const SkColor colors[], SkXfermode* xmode,
     71                               const uint16_t indices[], int indexCount,
     72                               const SkPaint&) SK_OVERRIDE;
     73 
     74     virtual SkBounder* setBounder(SkBounder*) SK_OVERRIDE;
     75     virtual SkDrawFilter* setDrawFilter(SkDrawFilter*) SK_OVERRIDE;
     76 
     77 private:
     78     SkTDArray<SkCanvas*> fList;
     79 
     80     class Iter;
     81 
     82     typedef SkCanvas INHERITED;
     83 };
     84 
     85 
     86 #endif
     87