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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 "../private/SkTDArray.h"
13 #include "SkCanvas.h"
14 
15 class SK_API SkNWayCanvas : public SkCanvas {
16 public:
17     SkNWayCanvas(int width, int height);
18     virtual ~SkNWayCanvas();
19 
20     virtual void addCanvas(SkCanvas*);
21     virtual void removeCanvas(SkCanvas*);
22     virtual void removeAll();
23 
24     ///////////////////////////////////////////////////////////////////////////
25     // These are forwarded to the N canvases we're referencing
26 
27 #ifdef SK_SUPPORT_LEGACY_DRAWFILTER
28     SkDrawFilter* setDrawFilter(SkDrawFilter*) override;
29 #endif
30 
31 protected:
32     SkTDArray<SkCanvas*> fList;
33 
34     void willSave() override;
35     SaveLayerStrategy getSaveLayerStrategy(const SaveLayerRec&) override;
36     void willRestore() override;
37 
38     void didConcat(const SkMatrix&) override;
39     void didSetMatrix(const SkMatrix&) override;
40 
41     void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&) override;
42     virtual void onDrawText(const void* text, size_t byteLength, SkScalar x, SkScalar y,
43                             const SkPaint&) override;
44     virtual void onDrawPosText(const void* text, size_t byteLength, const SkPoint pos[],
45                                const SkPaint&) override;
46     virtual void onDrawPosTextH(const void* text, size_t byteLength, const SkScalar xpos[],
47                                 SkScalar constY, const SkPaint&) override;
48     virtual void onDrawTextOnPath(const void* text, size_t byteLength, const SkPath& path,
49                                   const SkMatrix* matrix, const SkPaint&) override;
50     virtual void onDrawTextBlob(const SkTextBlob* blob, SkScalar x, SkScalar y,
51                                 const SkPaint& paint) override;
52     virtual void onDrawPatch(const SkPoint cubics[12], const SkColor colors[4],
53                              const SkPoint texCoords[4], SkXfermode* xmode,
54                              const SkPaint& paint) override;
55 
56     void onDrawPaint(const SkPaint&) override;
57     void onDrawPoints(PointMode, size_t count, const SkPoint pts[], const SkPaint&) override;
58     void onDrawRect(const SkRect&, const SkPaint&) override;
59     void onDrawOval(const SkRect&, const SkPaint&) override;
60     void onDrawRRect(const SkRRect&, const SkPaint&) override;
61     void onDrawPath(const SkPath&, const SkPaint&) override;
62     void onDrawBitmap(const SkBitmap&, SkScalar left, SkScalar top, const SkPaint*) override;
63     void onDrawBitmapRect(const SkBitmap&, const SkRect* src, const SkRect& dst, const SkPaint*,
64                           SrcRectConstraint) override;
65     void onDrawImage(const SkImage*, SkScalar left, SkScalar top, const SkPaint*) override;
66     void onDrawImageRect(const SkImage*, const SkRect* src, const SkRect& dst,
67                          const SkPaint*, SrcRectConstraint) override;
68     void onDrawBitmapNine(const SkBitmap&, const SkIRect& center, const SkRect& dst,
69                           const SkPaint*) override;
70     void onDrawVertices(VertexMode vmode, int vertexCount,
71                               const SkPoint vertices[], const SkPoint texs[],
72                               const SkColor colors[], SkXfermode* xmode,
73                               const uint16_t indices[], int indexCount,
74                               const SkPaint&) override;
75 
76     void onClipRect(const SkRect&, SkRegion::Op, ClipEdgeStyle) override;
77     void onClipRRect(const SkRRect&, SkRegion::Op, ClipEdgeStyle) override;
78     void onClipPath(const SkPath&, SkRegion::Op, ClipEdgeStyle) override;
79     void onClipRegion(const SkRegion&, SkRegion::Op) override;
80 
81     void onDrawPicture(const SkPicture*, const SkMatrix*, const SkPaint*) override;
82 
83     class Iter;
84 
85 private:
86     typedef SkCanvas INHERITED;
87 };
88 
89 
90 #endif
91