The Tor Browser: gfx/skia/trunk/src/animator/SkScriptCallBack.h@a63d609f5ebe

     2 /*

     3  * Copyright 2011 Google Inc.

     4  *

     5  * Use of this source code is governed by a BSD-style license that can be

     6  * found in the LICENSE file.

     7  */

     8 #ifndef SkScriptCallBack_DEFINED

     9 #define SkScriptCallBack_DEFINED

    11 #include "SkOperand2.h"

    12 #include "SkTDArray_Experimental.h"

    14 class SkScriptCallBack {

    15 public:

    16     virtual ~SkScriptCallBack() { }

    18     enum Type {

    19         kBox,

    20         kFunction,

    21         kMember,

    22         kMemberFunction,

    23         kProperty,

    24         kUnbox

    25     };

    27     virtual bool getReference(const char* , size_t len, SkScriptValue2* result) {  return false; }

    28     virtual SkOperand2::OpType getReturnType(size_t ref, SkOperand2*) {

    29         return SkOperand2::kS32; }

    30     virtual Type getType() const = 0;

    31 };

    33 class SkScriptCallBackConvert : public SkScriptCallBack {

    34 public:

    35     virtual bool convert(SkOperand2::OpType type, SkOperand2* operand) = 0;

    36 };

    38 class SkScriptCallBackFunction : public SkScriptCallBack {

    39 public:

    40     virtual void getParamTypes(SkIntArray(SkOperand2::OpType)* types) = 0;

    41     virtual Type getType() const { return kFunction; }

    42     virtual bool invoke(size_t ref, SkOpArray* params, SkOperand2* value) = 0;

    43 };

    45 class SkScriptCallBackMember: public SkScriptCallBack {

    46 public:

    47     bool getMemberReference(const char* , size_t len, void* object, SkScriptValue2* ref);

    48     virtual Type getType() const { return kMember; }

    49     virtual bool invoke(size_t ref, void* object, SkOperand2* value) = 0;

    50 };

    52 class SkScriptCallBackMemberFunction : public SkScriptCallBack {

    53 public:

    54     bool getMemberReference(const char* , size_t len, void* object, SkScriptValue2* ref);

    55     virtual void getParamTypes(SkIntArray(SkOperand2::OpType)* types) = 0;

    56     virtual Type getType() const { return kMemberFunction; }

    57     virtual bool invoke(size_t ref, void* object, SkOpArray* params, SkOperand2* value) = 0;

    58 };

    60 class SkScriptCallBackProperty : public SkScriptCallBack {

    61 public:

    62     virtual bool getConstValue(const char* name, size_t len, SkOperand2* value) { return false; }

    63     virtual bool getResult(size_t ref, SkOperand2* answer) { return false; }

    64     virtual Type getType() const { return kProperty; }

    65 };

    67 #endif // SkScriptCallBack_DEFINED

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