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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 void drawPaint(const SkPaint& paint) SK_OVERRIDE;
     24     virtual void drawPoints(PointMode mode, size_t count, const SkPoint pts[],
     25                             const SkPaint& paint) SK_OVERRIDE;
     26     virtual void drawOval(const SkRect&, const SkPaint& paint) SK_OVERRIDE;
     27     virtual void drawRect(const SkRect&, const SkPaint& paint) SK_OVERRIDE;
     28     virtual void drawRRect(const SkRRect&, const SkPaint& paint) SK_OVERRIDE;
     29     virtual void drawPath(const SkPath& path, const SkPaint& paint) SK_OVERRIDE;
     30     virtual void drawBitmap(const SkBitmap& bitmap, SkScalar left, SkScalar top,
     31                             const SkPaint* paint) SK_OVERRIDE;
     32     virtual void drawBitmapRectToRect(const SkBitmap& bitmap, const SkRect* src,
     33                                       const SkRect& dst, const SkPaint* paint,
     34                                       DrawBitmapRectFlags flags) SK_OVERRIDE;
     35     virtual void drawBitmapMatrix(const SkBitmap& bitmap, const SkMatrix& m,
     36                                   const SkPaint* paint) SK_OVERRIDE;
     37     virtual void drawSprite(const SkBitmap& bitmap, int left, int top,
     38                             const SkPaint* paint) SK_OVERRIDE;
     39     virtual void drawVertices(VertexMode vmode, int vertexCount,
     40                               const SkPoint vertices[], const SkPoint texs[],
     41                               const SkColor colors[], SkXfermode* xmode,
     42                               const uint16_t indices[], int indexCount,
     43                               const SkPaint& paint) SK_OVERRIDE;
     44     virtual void drawData(const void* data, size_t length) SK_OVERRIDE;
     45 
     46 protected:
     47     virtual void willSave(SaveFlags) SK_OVERRIDE;
     48     virtual SaveLayerStrategy willSaveLayer(const SkRect*, const SkPaint*, SaveFlags) SK_OVERRIDE;
     49     virtual void willRestore() SK_OVERRIDE;
     50 
     51     virtual void didConcat(const SkMatrix&) SK_OVERRIDE;
     52     virtual void didSetMatrix(const SkMatrix&) SK_OVERRIDE;
     53 
     54     virtual void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&) SK_OVERRIDE;
     55     virtual void onDrawText(const void* text, size_t byteLength, SkScalar x, SkScalar y,
     56                             const SkPaint&) SK_OVERRIDE;
     57     virtual void onDrawPosText(const void* text, size_t byteLength, const SkPoint pos[],
     58                                const SkPaint&) SK_OVERRIDE;
     59     virtual void onDrawPosTextH(const void* text, size_t byteLength, const SkScalar xpos[],
     60                                 SkScalar constY, const SkPaint&) SK_OVERRIDE;
     61     virtual void onDrawTextOnPath(const void* text, size_t byteLength, const SkPath& path,
     62                                   const SkMatrix* matrix, const SkPaint&) SK_OVERRIDE;
     63 
     64     virtual void onClipRect(const SkRect&, SkRegion::Op, ClipEdgeStyle) SK_OVERRIDE;
     65     virtual void onClipRRect(const SkRRect&, SkRegion::Op, ClipEdgeStyle) SK_OVERRIDE;
     66     virtual void onClipPath(const SkPath&, SkRegion::Op, ClipEdgeStyle) SK_OVERRIDE;
     67     virtual void onClipRegion(const SkRegion&, SkRegion::Op) SK_OVERRIDE;
     68 
     69     virtual void onDrawPicture(const SkPicture*) SK_OVERRIDE;
     70 
     71 private:
     72     lua_State*  fL;
     73     SkString    fFunc;
     74 
     75     void sendverb(const char verb[]);
     76 
     77     typedef SkCanvas INHERITED;
     78 };
     79 
     80 #endif
     81