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
44namespace 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
51class WebGLGetInfo {
52public:
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
115private:
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