SkNWayCanvas.h revision b7425173f96e93b090787e2386ba5f022b6c2869 
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 SK_API SkNWayCanvas : public SkCanvas {
15public:
16    SkNWayCanvas(int width, int height);
17    virtual ~SkNWayCanvas();
18
19    virtual void addCanvas(SkCanvas*);
20    virtual void removeCanvas(SkCanvas*);
21    virtual void removeAll();
22
23    ///////////////////////////////////////////////////////////////////////////
24    // These are forwarded to the N canvases we're referencing
25
26    virtual void clear(SkColor) SK_OVERRIDE;
27    virtual void drawPaint(const SkPaint& paint) SK_OVERRIDE;
28    virtual void drawPoints(PointMode mode, size_t count, const SkPoint pts[],
29                            const SkPaint&) SK_OVERRIDE;
30    virtual void drawRect(const SkRect&, const SkPaint&) SK_OVERRIDE;
31    virtual void drawOval(const SkRect&, const SkPaint&) SK_OVERRIDE;
32    virtual void drawRRect(const SkRRect&, const SkPaint&) SK_OVERRIDE;
33    virtual void drawPath(const SkPath& path, const SkPaint&) SK_OVERRIDE;
34    virtual void drawBitmap(const SkBitmap& bitmap, SkScalar left, SkScalar top,
35                            const SkPaint*) SK_OVERRIDE;
36    virtual void drawBitmapRectToRect(const SkBitmap& bitmap, const SkRect* src,
37                                      const SkRect& dst, const SkPaint* paint,
38                                      DrawBitmapRectFlags flags) SK_OVERRIDE;
39    virtual void drawBitmapMatrix(const SkBitmap& bitmap, const SkMatrix& m,
40                                  const SkPaint*) SK_OVERRIDE;
41    virtual void drawBitmapNine(const SkBitmap& bitmap, const SkIRect& center,
42                                const SkRect& dst,
43                                const SkPaint* paint = NULL) SK_OVERRIDE;
44    virtual void drawSprite(const SkBitmap& bitmap, int left, int top,
45                            const SkPaint*) SK_OVERRIDE;
46    virtual void drawVertices(VertexMode vmode, int vertexCount,
47                              const SkPoint vertices[], const SkPoint texs[],
48                              const SkColor colors[], SkXfermode* xmode,
49                              const uint16_t indices[], int indexCount,
50                              const SkPaint&) SK_OVERRIDE;
51    virtual void drawData(const void* data, size_t length) SK_OVERRIDE;
52
53    virtual SkDrawFilter* setDrawFilter(SkDrawFilter*) SK_OVERRIDE;
54
55    virtual void beginCommentGroup(const char* description) SK_OVERRIDE;
56    virtual void addComment(const char* kywd, const char* value) SK_OVERRIDE;
57    virtual void endCommentGroup() SK_OVERRIDE;
58
59protected:
60    SkTDArray<SkCanvas*> fList;
61
62    virtual void willSave() SK_OVERRIDE;
63    virtual SaveLayerStrategy willSaveLayer(const SkRect*, const SkPaint*, SaveFlags) SK_OVERRIDE;
64    virtual void willRestore() SK_OVERRIDE;
65
66    virtual void didConcat(const SkMatrix&) SK_OVERRIDE;
67    virtual void didSetMatrix(const SkMatrix&) SK_OVERRIDE;
68
69    virtual void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&) SK_OVERRIDE;
70    virtual void onDrawText(const void* text, size_t byteLength, SkScalar x, SkScalar y,
71                            const SkPaint&) SK_OVERRIDE;
72    virtual void onDrawPosText(const void* text, size_t byteLength, const SkPoint pos[],
73                               const SkPaint&) SK_OVERRIDE;
74    virtual void onDrawPosTextH(const void* text, size_t byteLength, const SkScalar xpos[],
75                                SkScalar constY, const SkPaint&) SK_OVERRIDE;
76    virtual void onDrawTextOnPath(const void* text, size_t byteLength, const SkPath& path,
77                                  const SkMatrix* matrix, const SkPaint&) SK_OVERRIDE;
78    virtual void onDrawTextBlob(const SkTextBlob* blob, SkScalar x, SkScalar y,
79                                const SkPaint& paint) SK_OVERRIDE;
80    virtual void onDrawPatch(const SkPoint cubics[12], const SkColor colors[4],
81                             const SkPoint texCoords[4], SkXfermode* xmode,
82                             const SkPaint& paint) SK_OVERRIDE;
83
84    virtual void onClipRect(const SkRect&, SkRegion::Op, ClipEdgeStyle) SK_OVERRIDE;
85    virtual void onClipRRect(const SkRRect&, SkRegion::Op, ClipEdgeStyle) SK_OVERRIDE;
86    virtual void onClipPath(const SkPath&, SkRegion::Op, ClipEdgeStyle) SK_OVERRIDE;
87    virtual void onClipRegion(const SkRegion&, SkRegion::Op) SK_OVERRIDE;
88
89    virtual void onDrawPicture(const SkPicture*, const SkMatrix*, const SkPaint*) SK_OVERRIDE;
90
91    class Iter;
92
93private:
94    typedef SkCanvas INHERITED;
95};
96
97
98#endif
99