mirror of https://github.com/libsdl-org/SDL
287 lines
9.7 KiB
C
287 lines
9.7 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2024 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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/**
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* # CategoryClipboard
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*
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* SDL provides access to the system clipboard, both for reading information
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* from other processes and publishing information of its own.
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*
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* This is not just text! SDL apps can access and publish data by mimetype.
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*/
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#ifndef SDL_clipboard_h_
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#define SDL_clipboard_h_
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#include <SDL3/SDL_stdinc.h>
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#include <SDL3/SDL_error.h>
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#include <SDL3/SDL_begin_code.h>
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/* Set up for C function definitions, even when using C++ */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Function prototypes */
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/**
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* Put UTF-8 text into the clipboard.
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*
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* \param text the text to store in the clipboard.
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* \returns true on success or false on failure; call SDL_GetError() for more
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* information.
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*
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* \threadsafety You may only call this function from the main thread.
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*
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* \since This function is available since SDL 3.1.3.
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*
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* \sa SDL_GetClipboardText
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* \sa SDL_HasClipboardText
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*/
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extern SDL_DECLSPEC bool SDLCALL SDL_SetClipboardText(const char *text);
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/**
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* Get UTF-8 text from the clipboard.
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*
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* This functions returns an empty string if there was not enough memory left
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* for a copy of the clipboard's content.
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*
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* \returns the clipboard text on success or an empty string on failure; call
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* SDL_GetError() for more information. This should be freed with
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* SDL_free() when it is no longer needed.
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*
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* \threadsafety You may only call this function from the main thread.
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*
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* \since This function is available since SDL 3.1.3.
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*
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* \sa SDL_HasClipboardText
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* \sa SDL_SetClipboardText
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*/
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extern SDL_DECLSPEC char * SDLCALL SDL_GetClipboardText(void);
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/**
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* Query whether the clipboard exists and contains a non-empty text string.
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*
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* \returns true if the clipboard has text, or false if it does not.
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*
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* \threadsafety You may only call this function from the main thread.
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*
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* \since This function is available since SDL 3.1.3.
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*
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* \sa SDL_GetClipboardText
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* \sa SDL_SetClipboardText
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*/
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extern SDL_DECLSPEC bool SDLCALL SDL_HasClipboardText(void);
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/**
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* Put UTF-8 text into the primary selection.
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*
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* \param text the text to store in the primary selection.
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* \returns true on success or false on failure; call SDL_GetError() for more
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* information.
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*
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* \threadsafety You may only call this function from the main thread.
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*
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* \since This function is available since SDL 3.1.3.
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*
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* \sa SDL_GetPrimarySelectionText
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* \sa SDL_HasPrimarySelectionText
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*/
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extern SDL_DECLSPEC bool SDLCALL SDL_SetPrimarySelectionText(const char *text);
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/**
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* Get UTF-8 text from the primary selection.
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*
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* This functions returns an empty string if there was not enough memory left
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* for a copy of the primary selection's content.
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*
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* \returns the primary selection text on success or an empty string on
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* failure; call SDL_GetError() for more information. This should be
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* freed with SDL_free() when it is no longer needed.
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*
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* \threadsafety You may only call this function from the main thread.
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*
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* \since This function is available since SDL 3.1.3.
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*
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* \sa SDL_HasPrimarySelectionText
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* \sa SDL_SetPrimarySelectionText
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*/
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extern SDL_DECLSPEC char * SDLCALL SDL_GetPrimarySelectionText(void);
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/**
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* Query whether the primary selection exists and contains a non-empty text
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* string.
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*
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* \returns true if the primary selection has text, or false if it does not.
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*
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* \threadsafety You may only call this function from the main thread.
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*
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* \since This function is available since SDL 3.1.3.
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*
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* \sa SDL_GetPrimarySelectionText
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* \sa SDL_SetPrimarySelectionText
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*/
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extern SDL_DECLSPEC bool SDLCALL SDL_HasPrimarySelectionText(void);
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/**
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* Callback function that will be called when data for the specified mime-type
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* is requested by the OS.
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*
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* The callback function is called with NULL as the mime_type when the
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* clipboard is cleared or new data is set. The clipboard is automatically
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* cleared in SDL_Quit().
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*
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* \param userdata a pointer to provided user data.
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* \param mime_type the requested mime-type.
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* \param size a pointer filled in with the length of the returned data.
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* \returns a pointer to the data for the provided mime-type. Returning NULL
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* or setting length to 0 will cause no data to be sent to the
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* "receiver". It is up to the receiver to handle this. Essentially
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* returning no data is more or less undefined behavior and may cause
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* breakage in receiving applications. The returned data will not be
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* freed so it needs to be retained and dealt with internally.
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*
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* \since This function is available since SDL 3.1.3.
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*
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* \sa SDL_SetClipboardData
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*/
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typedef const void *(SDLCALL *SDL_ClipboardDataCallback)(void *userdata, const char *mime_type, size_t *size);
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/**
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* Callback function that will be called when the clipboard is cleared, or new
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* data is set.
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*
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* \param userdata a pointer to provided user data.
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*
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* \since This function is available since SDL 3.1.3.
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*
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* \sa SDL_SetClipboardData
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*/
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typedef void (SDLCALL *SDL_ClipboardCleanupCallback)(void *userdata);
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/**
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* Offer clipboard data to the OS.
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*
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* Tell the operating system that the application is offering clipboard data
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* for each of the proivded mime-types. Once another application requests the
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* data the callback function will be called allowing it to generate and
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* respond with the data for the requested mime-type.
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*
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* The size of text data does not include any terminator, and the text does
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* not need to be null terminated (e.g. you can directly copy a portion of a
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* document)
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*
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* \param callback a function pointer to the function that provides the
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* clipboard data.
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* \param cleanup a function pointer to the function that cleans up the
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* clipboard data.
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* \param userdata an opaque pointer that will be forwarded to the callbacks.
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* \param mime_types a list of mime-types that are being offered.
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* \param num_mime_types the number of mime-types in the mime_types list.
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* \returns true on success or false on failure; call SDL_GetError() for more
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* information.
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*
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* \threadsafety You may only call this function from the main thread.
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*
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* \since This function is available since SDL 3.1.3.
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*
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* \sa SDL_ClearClipboardData
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* \sa SDL_GetClipboardData
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* \sa SDL_HasClipboardData
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*/
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extern SDL_DECLSPEC bool SDLCALL SDL_SetClipboardData(SDL_ClipboardDataCallback callback, SDL_ClipboardCleanupCallback cleanup, void *userdata, const char **mime_types, size_t num_mime_types);
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/**
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* Clear the clipboard data.
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*
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* \returns true on success or false on failure; call SDL_GetError() for more
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* information.
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*
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* \threadsafety You may only call this function from the main thread.
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*
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* \since This function is available since SDL 3.1.3.
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*
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* \sa SDL_SetClipboardData
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*/
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extern SDL_DECLSPEC bool SDLCALL SDL_ClearClipboardData(void);
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/**
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* Get the data from clipboard for a given mime type.
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*
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* The size of text data does not include the terminator, but the text is
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* guaranteed to be null terminated.
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*
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* \param mime_type the mime type to read from the clipboard.
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* \param size a pointer filled in with the length of the returned data.
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* \returns the retrieved data buffer or NULL on failure; call SDL_GetError()
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* for more information. This should be freed with SDL_free() when it
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* is no longer needed.
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*
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* \threadsafety You may only call this function from the main thread.
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*
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* \since This function is available since SDL 3.1.3.
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*
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* \sa SDL_HasClipboardData
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* \sa SDL_SetClipboardData
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*/
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extern SDL_DECLSPEC void * SDLCALL SDL_GetClipboardData(const char *mime_type, size_t *size);
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/**
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* Query whether there is data in the clipboard for the provided mime type.
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*
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* \param mime_type the mime type to check for data for.
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* \returns true if there exists data in clipboard for the provided mime type,
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* false if it does not.
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*
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* \threadsafety You may only call this function from the main thread.
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*
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* \since This function is available since SDL 3.1.3.
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*
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* \sa SDL_SetClipboardData
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* \sa SDL_GetClipboardData
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*/
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extern SDL_DECLSPEC bool SDLCALL SDL_HasClipboardData(const char *mime_type);
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/**
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* Retrieve the list of mime types available in the clipboard.
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*
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* \param num_mime_types a pointer filled with the number of mime types, may
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* be NULL.
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* \returns a null terminated array of strings with mime types, or NULL on
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* failure; call SDL_GetError() for more information. This should be
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* freed with SDL_free() when it is no longer needed.
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*
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* \threadsafety You may only call this function from the main thread.
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*
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* \since This function is available since SDL 3.1.3.
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*
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* \sa SDL_SetClipboardData
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*/
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extern SDL_DECLSPEC char ** SDLCALL SDL_GetClipboardMimeTypes(size_t *num_mime_types);
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/* Ends C function definitions when using C++ */
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#ifdef __cplusplus
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}
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#endif
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#include <SDL3/SDL_close_code.h>
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#endif /* SDL_clipboard_h_ */
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