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Diffstat (limited to 'src/corelib/platform/wasm/qstdweb.cpp')
-rw-r--r-- | src/corelib/platform/wasm/qstdweb.cpp | 236 |
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 --- /dev/null +++ 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 |