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      1 /*
      2  * Copyright (C) 2009 Apple Inc. All Rights Reserved.
      3  * Copyright (C) 2009 Google Inc. All Rights Reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  *
     14  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
     15  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     17  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
     18  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     19  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     20  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     21  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     22  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     24  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     25  */
     26 
     27 #ifndef WebGLGetInfo_h
     28 #define WebGLGetInfo_h
     29 
     30 #include "Float32Array.h"
     31 #include "Int32Array.h"
     32 #include "PlatformString.h"
     33 #include "Uint8Array.h"
     34 #include "WebGLBuffer.h"
     35 #include "WebGLFramebuffer.h"
     36 #include "WebGLProgram.h"
     37 #include "WebGLRenderbuffer.h"
     38 #include "WebGLTexture.h"
     39 #include "WebGLVertexArrayObjectOES.h"
     40 
     41 #include <wtf/PassRefPtr.h>
     42 #include <wtf/RefPtr.h>
     43 
     44 namespace WebCore {
     45 
     46 // A tagged union representing the result of get queries like
     47 // getParameter (encompassing getBooleanv, getIntegerv, getFloatv) and
     48 // similar variants. For reference counted types, increments and
     49 // decrements the reference count of the target object.
     50 
     51 class WebGLGetInfo {
     52 public:
     53     enum Type {
     54         kTypeBool,
     55         kTypeBoolArray,
     56         kTypeFloat,
     57         kTypeInt,
     58         kTypeNull,
     59         kTypeString,
     60         kTypeUnsignedInt,
     61         kTypeWebGLBuffer,
     62         kTypeWebGLFloatArray,
     63         kTypeWebGLFramebuffer,
     64         kTypeWebGLIntArray,
     65         kTypeWebGLObjectArray,
     66         kTypeWebGLProgram,
     67         kTypeWebGLRenderbuffer,
     68         kTypeWebGLTexture,
     69         kTypeWebGLUnsignedByteArray,
     70         kTypeWebGLVertexArrayObjectOES,
     71     };
     72 
     73     WebGLGetInfo(bool value);
     74     WebGLGetInfo(const bool* value, int size);
     75     WebGLGetInfo(float value);
     76     WebGLGetInfo(int value);
     77     // Represents the null value and type.
     78     WebGLGetInfo();
     79     WebGLGetInfo(const String& value);
     80     WebGLGetInfo(unsigned int value);
     81     WebGLGetInfo(PassRefPtr<WebGLBuffer> value);
     82     WebGLGetInfo(PassRefPtr<Float32Array> value);
     83     WebGLGetInfo(PassRefPtr<WebGLFramebuffer> value);
     84     WebGLGetInfo(PassRefPtr<Int32Array> value);
     85     // FIXME: implement WebGLObjectArray
     86     // WebGLGetInfo(PassRefPtr<WebGLObjectArray> value);
     87     WebGLGetInfo(PassRefPtr<WebGLProgram> value);
     88     WebGLGetInfo(PassRefPtr<WebGLRenderbuffer> value);
     89     WebGLGetInfo(PassRefPtr<WebGLTexture> value);
     90     WebGLGetInfo(PassRefPtr<Uint8Array> value);
     91     WebGLGetInfo(PassRefPtr<WebGLVertexArrayObjectOES> value);
     92 
     93     virtual ~WebGLGetInfo();
     94 
     95     Type getType() const;
     96 
     97     bool getBool() const;
     98     const Vector<bool>& getBoolArray() const;
     99     float getFloat() const;
    100     int getInt() const;
    101     const String& getString() const;
    102     unsigned int getUnsignedInt() const;
    103     PassRefPtr<WebGLBuffer> getWebGLBuffer() const;
    104     PassRefPtr<Float32Array> getWebGLFloatArray() const;
    105     PassRefPtr<WebGLFramebuffer> getWebGLFramebuffer() const;
    106     PassRefPtr<Int32Array> getWebGLIntArray() const;
    107     // FIXME: implement WebGLObjectArray
    108     // PassRefPtr<WebGLObjectArray> getWebGLObjectArray() const;
    109     PassRefPtr<WebGLProgram> getWebGLProgram() const;
    110     PassRefPtr<WebGLRenderbuffer> getWebGLRenderbuffer() const;
    111     PassRefPtr<WebGLTexture> getWebGLTexture() const;
    112     PassRefPtr<Uint8Array> getWebGLUnsignedByteArray() const;
    113     PassRefPtr<WebGLVertexArrayObjectOES> getWebGLVertexArrayObjectOES() const;
    114 
    115 private:
    116     Type m_type;
    117     bool m_bool;
    118     Vector<bool> m_boolArray;
    119     float m_float;
    120     int m_int;
    121     String m_string;
    122     unsigned int m_unsignedInt;
    123     RefPtr<WebGLBuffer> m_webglBuffer;
    124     RefPtr<Float32Array> m_webglFloatArray;
    125     RefPtr<WebGLFramebuffer> m_webglFramebuffer;
    126     RefPtr<Int32Array> m_webglIntArray;
    127     // FIXME: implement WebGLObjectArray
    128     // RefPtr<WebGLObjectArray> m_webglObjectArray;
    129     RefPtr<WebGLProgram> m_webglProgram;
    130     RefPtr<WebGLRenderbuffer> m_webglRenderbuffer;
    131     RefPtr<WebGLTexture> m_webglTexture;
    132     RefPtr<Uint8Array> m_webglUnsignedByteArray;
    133     RefPtr<WebGLVertexArrayObjectOES> m_webglVertexArrayObject;
    134 };
    135 
    136 } // namespace WebCore
    137 
    138 #endif // WebGLGetInfo_h
    139