1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
|
/****************************************************************************
**
** Copyright (C) 2019 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qstdweb_p.h"
#include <emscripten/bind.h>
#include <cstdint>
#include <iostream>
QT_BEGIN_NAMESPACE
namespace qstdweb {
typedef double uint53_t; // see Number.MAX_SAFE_INTEGER
ArrayBuffer::ArrayBuffer(const emscripten::val &arrayBuffer)
:m_arrayBuffer(arrayBuffer)
{
}
uint32_t ArrayBuffer::byteLength() const
{
if (m_arrayBuffer.isUndefined() || m_arrayBuffer.isNull())
return 0;
return m_arrayBuffer["byteLength"].as<uint32_t>();
}
Blob::Blob(const emscripten::val &blob)
:m_blob(blob)
{
}
uint32_t Blob::size() const
{
return m_blob["size"].as<uint32_t>();
}
File::File(const emscripten::val &file)
:m_file(file)
{
}
Blob File::slice(uint64_t begin, uint64_t end) const
{
return Blob(m_file.call<emscripten::val>("slice", uint53_t(begin), uint53_t(end)));
}
std::string File::name() const
{
return m_file["name"].as<std::string>();
}
uint64_t File::size() const
{
return uint64_t(m_file["size"].as<uint53_t>());
}
FileList::FileList(const emscripten::val &fileList)
:m_fileList(fileList)
{
}
int FileList::length() const
{
return m_fileList["length"].as<int>();
}
File FileList::item(int index) const
{
return File(m_fileList[index]);
}
File FileList::operator[](int index) const
{
return item(index);
}
ArrayBuffer FileReader::result() const
{
return ArrayBuffer(m_fileReader["result"]);
}
void FileReader::readAsArrayBuffer(const Blob &blob) const
{
m_fileReader.call<void>("readAsArrayBuffer", blob.m_blob);
}
void FileReader::onLoad(const std::function<void ()> &onLoad)
{
m_onLoad.reset(new EventCallback(m_fileReader, "load", onLoad));
}
void FileReader::onError(const std::function<void ()> &onError)
{
m_onError.reset(new EventCallback(m_fileReader, "error", onError));
}
void FileReader::onAbort(const std::function<void ()> &onAbort)
{
m_onAbort.reset(new EventCallback(m_fileReader, "abort", onAbort));
}
Uint8Array Uint8Array::heap()
{
return Uint8Array(heap_());
}
Uint8Array::Uint8Array(const emscripten::val &uint8Array)
: m_uint8Array(uint8Array)
{
}
Uint8Array::Uint8Array(const ArrayBuffer &buffer)
: m_uint8Array(Uint8Array::constructor_().new_(buffer.m_arrayBuffer))
{
}
Uint8Array::Uint8Array(const ArrayBuffer &buffer, uint32_t offset, uint32_t length)
: m_uint8Array(Uint8Array::constructor_().new_(buffer.m_arrayBuffer, offset, length))
{
}
Uint8Array::Uint8Array(char *buffer, uint32_t size)
:m_uint8Array(Uint8Array::constructor_().new_(Uint8Array::heap().buffer().m_arrayBuffer, uint32_t(buffer), size))
{
}
ArrayBuffer Uint8Array::buffer() const
{
return ArrayBuffer(m_uint8Array["buffer"]);
}
uint32_t Uint8Array::length() const
{
return m_uint8Array["length"].as<uint32_t>();
}
void Uint8Array::set(const Uint8Array &source)
{
m_uint8Array.call<void>("set", source.m_uint8Array); // copies source content
}
void Uint8Array::copyTo(char *destination) const
{
Uint8Array(destination, length()).set(*this);
}
void Uint8Array::copy(char *destination, const Uint8Array &source)
{
Uint8Array(destination, source.length()).set(source);
}
emscripten::val Uint8Array::heap_()
{
return emscripten::val::module_property("HEAPU8");
}
emscripten::val Uint8Array::constructor_()
{
return emscripten::val::global("Uint8Array");
}
// Registers a callback function for a named event on the given element. The event
// name must be the name as returned by the Event.type property: e.g. "load", "error".
EventCallback::EventCallback(emscripten::val element, const std::string &name, const std::function<void ()> &fn)
:m_fn(fn)
{
element.set(contextPropertyName(name).c_str(), emscripten::val(intptr_t(this)));
element.set((std::string("on") + name).c_str(), emscripten::val::module_property("qtStdWebEventCallbackActivate"));
}
void EventCallback::activate(emscripten::val event)
{
emscripten::val target = event["target"];
std::string eventName = event["type"].as<std::string>();
EventCallback *that = reinterpret_cast<EventCallback *>(target[contextPropertyName(eventName).c_str()].as<intptr_t>());
that->m_fn();
}
std::string EventCallback::contextPropertyName(const std::string &eventName)
{
return std::string("data-qtEventCallbackContext") + eventName;
}
EMSCRIPTEN_BINDINGS(QtStdwebCalback) {
emscripten::function("qtStdWebEventCallbackActivate", &EventCallback::activate);
}
} // namespace qstdweb
QT_END_NAMESPACE
|
