1 /*
2  * Copyright 2013 Google Inc.
3  *
4  * Use of this source code is governed by a BSD-style license that can be
5  * found in the LICENSE file.
6  */
7 
8 #ifndef SkLuaCanvas_DEFINED
9 #define SkLuaCanvas_DEFINED
10 
11 #include "SkCanvas.h"
12 #include "SkString.h"
13 
14 struct lua_State;
15 
16 class SkLuaCanvas : public SkCanvas {
17 public:
18     void pushThis();
19 
20     SkLuaCanvas(int width, int height, lua_State*, const char function[]);
21     virtual ~SkLuaCanvas();
22 
23 protected:
24     void willSave() override;
25     SaveLayerStrategy getSaveLayerStrategy(const SaveLayerRec&) override;
26     void willRestore() override;
27 
28     void didConcat(const SkMatrix&) override;
29     void didSetMatrix(const SkMatrix&) override;
30 
31     void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&) override;
32     virtual void onDrawText(const void* text, size_t byteLength, SkScalar x, SkScalar y,
33                             const SkPaint&) override;
34     virtual void onDrawPosText(const void* text, size_t byteLength, const SkPoint pos[],
35                                const SkPaint&) override;
36     virtual void onDrawPosTextH(const void* text, size_t byteLength, const SkScalar xpos[],
37                                 SkScalar constY, const SkPaint&) override;
38     virtual void onDrawTextOnPath(const void* text, size_t byteLength, const SkPath& path,
39                                   const SkMatrix* matrix, const SkPaint&) override;
40     virtual void onDrawTextBlob(const SkTextBlob* blob, SkScalar x, SkScalar y,
41                                 const SkPaint& paint) override;
42 
43     void onDrawPaint(const SkPaint&) override;
44     void onDrawPoints(PointMode, size_t count, const SkPoint pts[], const SkPaint&) override;
45     void onDrawRect(const SkRect&, const SkPaint&) override;
46     void onDrawOval(const SkRect&, const SkPaint&) override;
47     void onDrawRRect(const SkRRect&, const SkPaint&) override;
48     void onDrawPath(const SkPath&, const SkPaint&) override;
49     void onDrawBitmap(const SkBitmap&, SkScalar left, SkScalar top, const SkPaint*) override;
50     void onDrawBitmapRect(const SkBitmap&, const SkRect* src, const SkRect& dst, const SkPaint*,
51                           SrcRectConstraint) override;
52     void onDrawImage(const SkImage*, SkScalar left, SkScalar top, const SkPaint*) override;
53     void onDrawImageRect(const SkImage*, const SkRect* src, const SkRect& dst,
54                          const SkPaint*, SrcRectConstraint) override;
55     void onDrawBitmapNine(const SkBitmap&, const SkIRect& center, const SkRect& dst,
56                           const SkPaint*) override;
57     void onDrawVertices(VertexMode vmode, int vertexCount,
58                         const SkPoint vertices[], const SkPoint texs[],
59                         const SkColor colors[], SkXfermode* xmode,
60                         const uint16_t indices[], int indexCount,
61                         const SkPaint&) override;
62 
63     void onClipRect(const SkRect&, SkRegion::Op, ClipEdgeStyle) override;
64     void onClipRRect(const SkRRect&, SkRegion::Op, ClipEdgeStyle) override;
65     void onClipPath(const SkPath&, SkRegion::Op, ClipEdgeStyle) override;
66     void onClipRegion(const SkRegion&, SkRegion::Op) override;
67 
68     void onDrawPicture(const SkPicture*, const SkMatrix*, const SkPaint*) override;
69 
70 private:
71     lua_State*  fL;
72     SkString    fFunc;
73 
74     void sendverb(const char verb[]);
75 
76     typedef SkCanvas INHERITED;
77 };
78 
79 #endif
80