Prevent crash in Lua bindings.

src/utils/SkLua.cpp

Index: src/utils/SkLua.cpp
===================================================================
--- src/utils/SkLua.cpp	(revision 12711)
+++ src/utils/SkLua.cpp	(working copy)
@@ -6,6 +6,7 @@
  */
 
 #include "SkLua.h"
+#include "SkAnnotation.h"
 #include "SkCanvas.h"
 #include "SkData.h"
 #include "SkDocument.h"
@@ -31,6 +32,7 @@
         return #T "_LuaMetaTableName";          \
     }
 
+DEF_MTNAME(SkAnnotation)
 DEF_MTNAME(SkCanvas)
 DEF_MTNAME(SkDocument)
 DEF_MTNAME(SkImage)
@@ -491,6 +493,16 @@
     return 1;
 }
 
+static int lpaint_getTextScaleX(lua_State* L) {
+    SkLua(L).pushScalar(get_obj<SkPaint>(L, 1)->getTextScaleX());
+    return 1;
+}
+
+static int lpaint_getTextSkewX(lua_State* L) {
+    SkLua(L).pushScalar(get_obj<SkPaint>(L, 1)->getTextSkewX());
+    return 1;
+}
+
 static int lpaint_setTextSize(lua_State* L) {
     get_obj<SkPaint>(L, 1)->setTextSize(lua2scalar(L, 2));
     return 0;
@@ -574,6 +586,11 @@
     return 0;
 }
 
+static int lpaint_getStrokeMiter(lua_State* L) {
+    SkLua(L).pushScalar(get_obj<SkPaint>(L, 1)->getStrokeMiter());
+    return 1;
+}
+
 static int lpaint_measureText(lua_State* L) {
     if (lua_isstring(L, 2)) {
         size_t len;
@@ -635,6 +652,16 @@
     return 0;
 }
 
+static int lpaint_getAnnotation(lua_State* L) {
+    const SkPaint* paint = get_obj<SkPaint>(L, 1);
+    SkAnnotation* annotation = paint->getAnnotation();
+    if (annotation) {
+        push_ref(L, annotation);
+        return 1;
+    }
+    return 0;
+}
+
 static int lpaint_gc(lua_State* L) {
     get_obj<SkPaint>(L, 1)->~SkPaint();
     return 0;
@@ -647,6 +674,8 @@
     { "setColor", lpaint_setColor },
     { "getTextSize", lpaint_getTextSize },
     { "setTextSize", lpaint_setTextSize },
+    { "getTextScaleX", lpaint_getTextScaleX },
+    { "getTextSkewX", lpaint_getTextSkewX },
     { "getTypeface", lpaint_getTypeface },
     { "setTypeface", lpaint_setTypeface },
     { "getFontID", lpaint_getFontID },
@@ -656,10 +685,12 @@
     { "setStroke", lpaint_setStroke },
     { "getStrokeWidth", lpaint_getStrokeWidth },
     { "setStrokeWidth", lpaint_setStrokeWidth },
+    { "getStrokeMiter", lpaint_getStrokeMiter },
     { "measureText", lpaint_measureText },
     { "getFontMetrics", lpaint_getFontMetrics },
     { "getEffects", lpaint_getEffects },
     { "getShader", lpaint_getShader },
+    { "getAnnotation", lpaint_getAnnotation },
     { "__gc", lpaint_gc },
     { NULL, NULL }
 };