97 lines
3.9 KiB
C
97 lines
3.9 KiB
C
|
#pragma once
|
||
|
|
|
||
|
|
#include <string>
|
||
|
|
#include <emscripten.h>
|
||
|
|
|
||
|
|
#define _EM_JS_INLINE(ret, c_name, js_name, params, code) \
|
||
|
|
extern "C" { \
|
||
|
|
ret c_name params EM_IMPORT(js_name); \
|
||
|
|
EMSCRIPTEN_KEEPALIVE \
|
||
|
|
__attribute__((section("em_js"), aligned(1))) inline char __em_js__##js_name[] = \
|
||
|
|
#params "<::>" code; \
|
||
|
|
}
|
||
|
|
|
||
|
|
#define EM_JS_INLINE(ret, name, params, ...) _EM_JS_INLINE(ret, name, name, params, #__VA_ARGS__)
|
||
|
|
|
||
|
|
namespace emscripten_browser_clipboard {
|
||
|
|
|
||
|
|
/////////////////////////////////// Interface //////////////////////////////////
|
||
|
|
|
||
|
|
using paste_handler = void(*)(std::string&&, void*);
|
||
|
|
using copy_handler = char const*(*)(void*);
|
||
|
|
|
||
|
|
inline void paste(paste_handler callback, void *callback_data = nullptr);
|
||
|
|
inline void copy(copy_handler callback, void *callback_data = nullptr);
|
||
|
|
inline void copy(std::string const &content);
|
||
|
|
|
||
|
|
///////////////////////////////// Implementation ///////////////////////////////
|
||
|
|
|
||
|
|
namespace detail {
|
||
|
|
|
||
|
|
EM_JS_INLINE(void, paste_js, (paste_handler callback, void *callback_data), {
|
||
|
|
/// Register the given callback to handle paste events. Callback data pointer is passed through to the callback.
|
||
|
|
/// Paste handler callback signature is:
|
||
|
|
/// void my_handler(std::string const &paste_data, void *callback_data = nullptr);
|
||
|
|
document.addEventListener('paste', (event) => {
|
||
|
|
Module["ccall"]('emscripten_browser_clipboard_detail_paste_return', 'number', ['string', 'number', 'number'], [event.clipboardData.getData('text/plain'), callback, callback_data]);
|
||
|
|
});
|
||
|
|
});
|
||
|
|
|
||
|
|
EM_JS_INLINE(void, copy_js, (copy_handler callback, void *callback_data), {
|
||
|
|
/// Register the given callback to handle copy events. Callback data pointer is passed through to the callback.
|
||
|
|
/// Copy handler callback signature is:
|
||
|
|
/// char const *my_handler(void *callback_data = nullptr);
|
||
|
|
document.addEventListener('copy', (event) => {
|
||
|
|
const content_ptr = Module["ccall"]('emscripten_browser_clipboard_detail_copy_return', 'number', ['number', 'number'], [callback, callback_data]);
|
||
|
|
event.clipboardData.setData('text/plain', UTF8ToString(content_ptr));
|
||
|
|
event.preventDefault();
|
||
|
|
});
|
||
|
|
});
|
||
|
|
|
||
|
|
EM_JS_INLINE(void, copy_async_js, (char const *content_ptr), {
|
||
|
|
/// Attempt to copy the provided text asynchronously
|
||
|
|
navigator.clipboard.writeText(UTF8ToString(content_ptr));
|
||
|
|
});
|
||
|
|
|
||
|
|
} // namespace detail
|
||
|
|
|
||
|
|
inline void paste(paste_handler callback, void *callback_data) {
|
||
|
|
/// C++ wrapper for javascript paste call
|
||
|
|
detail::paste_js(callback, callback_data);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline void copy(copy_handler callback, void *callback_data) {
|
||
|
|
/// C++ wrapper for javascript copy call
|
||
|
|
detail::copy_js(callback, callback_data);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline void copy(std::string const &content) {
|
||
|
|
/// C++ wrapper for javascript copy call
|
||
|
|
detail::copy_async_js(content.c_str());
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace detail {
|
||
|
|
|
||
|
|
extern "C" {
|
||
|
|
|
||
|
|
EMSCRIPTEN_KEEPALIVE inline int emscripten_browser_clipboard_detail_paste_return(char const *paste_data, paste_handler callback, void *callback_data);
|
||
|
|
|
||
|
|
EMSCRIPTEN_KEEPALIVE inline int emscripten_browser_clipboard_detail_paste_return(char const *paste_data, paste_handler callback, void *callback_data) {
|
||
|
|
/// Call paste callback - this function is called from javascript when the paste event occurs
|
||
|
|
callback(paste_data, callback_data);
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
EMSCRIPTEN_KEEPALIVE inline char const *emscripten_browser_clipboard_detail_copy_return(copy_handler callback, void *callback_data);
|
||
|
|
|
||
|
|
EMSCRIPTEN_KEEPALIVE inline char const *emscripten_browser_clipboard_detail_copy_return(copy_handler callback, void *callback_data) {
|
||
|
|
/// Call paste callback - this function is called from javascript when the paste event occurs
|
||
|
|
return callback(callback_data);
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace detail
|
||
|
|
|
||
|
|
} // namespace emscripten_browser_clipboard
|