add SkLuaCanvas

add lua 5.2 to third_party

BUG=
R=bungeman@google.com

Review URL: https://codereview.chromium.org/14907017

git-svn-id: http://skia.googlecode.com/svn/trunk@9149 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/include/utils/SkLuaCanvas.h b/include/utils/SkLuaCanvas.h
new file mode 100644
index 0000000..16ea553
--- /dev/null
+++ b/include/utils/SkLuaCanvas.h
@@ -0,0 +1,81 @@
+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkLuaCanvas_DEFINED
+#define SkLuaCanvas_DEFINED
+
+#include "SkCanvas.h"
+#include "SkString.h"
+
+struct lua_State;
+
+class SkLuaCanvas : public SkCanvas {
+public:
+    SkLuaCanvas(int width, int height, lua_State*, const char function[]);
+    virtual ~SkLuaCanvas();
+
+    virtual int save(SaveFlags flags) SK_OVERRIDE;
+    virtual int saveLayer(const SkRect* bounds, const SkPaint* paint,
+                          SaveFlags flags) SK_OVERRIDE;
+    virtual void restore() SK_OVERRIDE;
+    
+    virtual bool translate(SkScalar dx, SkScalar dy) SK_OVERRIDE;
+    virtual bool scale(SkScalar sx, SkScalar sy) SK_OVERRIDE;
+    virtual bool rotate(SkScalar degrees) SK_OVERRIDE;
+    virtual bool skew(SkScalar sx, SkScalar sy) SK_OVERRIDE;
+    virtual bool concat(const SkMatrix& matrix) SK_OVERRIDE;
+    virtual void setMatrix(const SkMatrix& matrix) SK_OVERRIDE;
+    
+    virtual bool clipRect(const SkRect&, SkRegion::Op, bool) SK_OVERRIDE;
+    virtual bool clipRRect(const SkRRect&, SkRegion::Op, bool) SK_OVERRIDE;
+    virtual bool clipPath(const SkPath&, SkRegion::Op, bool) SK_OVERRIDE;
+    virtual bool clipRegion(const SkRegion& deviceRgn,
+                            SkRegion::Op) SK_OVERRIDE;
+    
+    virtual void drawPaint(const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawPoints(PointMode mode, size_t count, const SkPoint pts[],
+                            const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawOval(const SkRect&, const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawRect(const SkRect&, const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawRRect(const SkRRect&, const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawPath(const SkPath& path, const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawBitmap(const SkBitmap& bitmap, SkScalar left, SkScalar top,
+                            const SkPaint* paint) SK_OVERRIDE;
+    virtual void drawBitmapRectToRect(const SkBitmap& bitmap, const SkRect* src,
+                                      const SkRect& dst, const SkPaint* paint) SK_OVERRIDE;
+    virtual void drawBitmapMatrix(const SkBitmap& bitmap, const SkMatrix& m,
+                                  const SkPaint* paint) SK_OVERRIDE;
+    virtual void drawSprite(const SkBitmap& bitmap, int left, int top,
+                            const SkPaint* paint) SK_OVERRIDE;
+    virtual void drawText(const void* text, size_t byteLength, SkScalar x,
+                          SkScalar y, const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawPosText(const void* text, size_t byteLength,
+                             const SkPoint pos[], const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawPosTextH(const void* text, size_t byteLength,
+                              const SkScalar xpos[], SkScalar constY,
+                              const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawTextOnPath(const void* text, size_t byteLength,
+                                const SkPath& path, const SkMatrix* matrix,
+                                const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawPicture(SkPicture&) SK_OVERRIDE;
+    virtual void drawVertices(VertexMode vmode, int vertexCount,
+                              const SkPoint vertices[], const SkPoint texs[],
+                              const SkColor colors[], SkXfermode* xmode,
+                              const uint16_t indices[], int indexCount,
+                              const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawData(const void* data, size_t length) SK_OVERRIDE;
+
+private:
+    lua_State*  fL;
+    SkString    fFunc;
+    
+    void sendverb(const char verb[]);
+
+    typedef SkCanvas INHERITED;
+};
+
+#endif