1 files changed, 236 insertions, 0 deletions
diff --git a/src/corelib/platform/wasm/qstdweb.cpp b/src/corelib/platform/wasm/qstdweb.cpp
new file mode 100644
index 0000000000..198ce897ca
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+++ b/src/corelib/platform/wasm/qstdweb.cpp
@@ -0,0 +1,236 @@
+/****************************************************************************
+**
+** 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