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Diffstat (limited to 'src/corelib/platform/wasm/qstdweb_p.h')
| -rw-r--r-- | src/corelib/platform/wasm/qstdweb_p.h | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/src/corelib/platform/wasm/qstdweb_p.h b/src/corelib/platform/wasm/qstdweb_p.h new file mode 100644 index 0000000000..75c2ec34b1 --- /dev/null +++ b/src/corelib/platform/wasm/qstdweb_p.h @@ -0,0 +1,169 @@ +/**************************************************************************** +** +** 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. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QSTDWEB_P_H +#define QSTDWEB_P_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists purely as an +// implementation detail. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + +#include <qglobal.h> +#include <emscripten/val.h> +#include <cstdint> +#include <functional> + +QT_BEGIN_NAMESPACE + +namespace qstdweb { + + // DOM API in C++, implemented using emscripten val.h and bind.h. + // This is private API and can be extened and changed as needed. + + class ArrayBuffer; + class Blob; + class File; + class FileList; + class FileReader; + class Uint8Array; + class EventCallback; + + class ArrayBuffer { + public: + explicit ArrayBuffer(const emscripten::val &arrayBuffer); + uint32_t byteLength() const; + + private: + friend class Uint8Array; + emscripten::val m_arrayBuffer = emscripten::val::undefined(); + }; + + class Blob { + public: + explicit Blob(const emscripten::val &blob); + uint32_t size() const; + + private: + friend class FileReader; + emscripten::val m_blob = emscripten::val::undefined(); + }; + + class File { + public: + File() = default; + explicit File(const emscripten::val &file); + + Blob slice(uint64_t begin, uint64_t end) const; + std::string name() const; + uint64_t size() const; + + private: + emscripten::val m_file = emscripten::val::undefined(); + }; + + class FileList { + public: + FileList() = default; + explicit FileList(const emscripten::val &fileList); + + int length() const; + File item(int index) const; + File operator[](int index) const; + + private: + emscripten::val m_fileList = emscripten::val::undefined(); + }; + + class FileReader { + public: + ArrayBuffer result() const; + void readAsArrayBuffer(const Blob &blob) const; + + void onLoad(const std::function<void ()> &onLoad); + void onError(const std::function<void ()> &onError); + void onAbort(const std::function<void ()> &onAbort); + + private: + emscripten::val m_fileReader = emscripten::val::global("FileReader").new_(); + std::unique_ptr<EventCallback> m_onLoad; + std::unique_ptr<EventCallback> m_onError; + std::unique_ptr<EventCallback> m_onAbort; + }; + + class Uint8Array { + public: + static Uint8Array heap(); + explicit Uint8Array(const emscripten::val &uint8Array); + explicit Uint8Array(const ArrayBuffer &buffer); + Uint8Array(const ArrayBuffer &buffer, uint32_t offset, uint32_t length); + Uint8Array(char *buffer, uint32_t size); + + ArrayBuffer buffer() const; + uint32_t length() const; + void set(const Uint8Array &source); + + void copyTo(char *destination) const; + static void copy(char *destination, const Uint8Array &source); + private: + static emscripten::val heap_(); + static emscripten::val constructor_(); + emscripten::val m_uint8Array = emscripten::val::undefined(); + }; + + class EventCallback + { + public: + EventCallback(emscripten::val element, const std::string &name, const std::function<void ()> &fn); + static void activate(emscripten::val event); + private: + static std::string contextPropertyName(const std::string &eventName); + std::function<void ()> m_fn; + }; +} + +QT_END_NAMESPACE + +#endif |