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
14class SkNWayCanvas : public SkCanvas {
15public:
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
74private:
75    SkTDArray<SkCanvas*> fList;
76
77    class Iter;
78
79    typedef SkCanvas INHERITED;
80};
81
82
83#endif
84
85