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| |
| #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 |