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      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     virtual int save(SaveFlags flags) SK_OVERRIDE;
     24     virtual int saveLayer(const SkRect* bounds, const SkPaint* paint,
     25                           SaveFlags flags) SK_OVERRIDE;
     26     virtual void restore() SK_OVERRIDE;
     27 
     28     virtual bool translate(SkScalar dx, SkScalar dy) SK_OVERRIDE;
     29     virtual bool scale(SkScalar sx, SkScalar sy) SK_OVERRIDE;
     30     virtual bool rotate(SkScalar degrees) SK_OVERRIDE;
     31     virtual bool skew(SkScalar sx, SkScalar sy) SK_OVERRIDE;
     32     virtual bool concat(const SkMatrix& matrix) SK_OVERRIDE;
     33     virtual void setMatrix(const SkMatrix& matrix) SK_OVERRIDE;
     34 
     35     virtual bool clipRect(const SkRect&, SkRegion::Op, bool) SK_OVERRIDE;
     36     virtual bool clipRRect(const SkRRect&, 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& paint) SK_OVERRIDE;
     44     virtual void drawOval(const SkRect&, const SkPaint& paint) SK_OVERRIDE;
     45     virtual void drawRect(const SkRect&, const SkPaint& paint) SK_OVERRIDE;
     46     virtual void drawRRect(const SkRRect&, const SkPaint& paint) SK_OVERRIDE;
     47     virtual void drawPath(const SkPath& path, const SkPaint& paint) SK_OVERRIDE;
     48     virtual void drawBitmap(const SkBitmap& bitmap, SkScalar left, SkScalar top,
     49                             const SkPaint* paint) SK_OVERRIDE;
     50     virtual void drawBitmapRectToRect(const SkBitmap& bitmap, const SkRect* src,
     51                                       const SkRect& dst, const SkPaint* paint,
     52                                       DrawBitmapRectFlags flags) SK_OVERRIDE;
     53     virtual void drawBitmapMatrix(const SkBitmap& bitmap, const SkMatrix& m,
     54                                   const SkPaint* paint) SK_OVERRIDE;
     55     virtual void drawSprite(const SkBitmap& bitmap, int left, int top,
     56                             const SkPaint* paint) SK_OVERRIDE;
     57     virtual void drawText(const void* text, size_t byteLength, SkScalar x,
     58                           SkScalar y, const SkPaint& paint) SK_OVERRIDE;
     59     virtual void drawPosText(const void* text, size_t byteLength,
     60                              const SkPoint pos[], const SkPaint& paint) SK_OVERRIDE;
     61     virtual void drawPosTextH(const void* text, size_t byteLength,
     62                               const SkScalar xpos[], SkScalar constY,
     63                               const SkPaint& paint) SK_OVERRIDE;
     64     virtual void drawTextOnPath(const void* text, size_t byteLength,
     65                                 const SkPath& path, const SkMatrix* matrix,
     66                                 const SkPaint& paint) 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& paint) SK_OVERRIDE;
     73     virtual void drawData(const void* data, size_t length) SK_OVERRIDE;
     74 
     75 private:
     76     lua_State*  fL;
     77     SkString    fFunc;
     78 
     79     void sendverb(const char verb[]);
     80 
     81     typedef SkCanvas INHERITED;
     82 };
     83 
     84 #endif
     85