231 lines
7.7 KiB
C
231 lines
7.7 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2023 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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* \file SDL_clipboard.h
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*
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* \brief Include file for SDL clipboard handling
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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_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 0 on success or a negative error code on failure; call
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* SDL_GetError() for more information.
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*
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* \since This function is available since SDL 3.0.0.
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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 DECLSPEC int SDLCALL SDL_SetClipboardText(const char *text);
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/**
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* Get UTF-8 text from the clipboard, which must be freed with SDL_free().
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*
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* This functions returns empty string if there was not enough memory left for
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* 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. Caller must call SDL_free()
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* on the returned pointer when done with it (even if there was an
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* error).
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*
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* \since This function is available since SDL 3.0.0.
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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 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 SDL_TRUE if the clipboard has text, or SDL_FALSE if it does not.
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*
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* \since This function is available since SDL 3.0.0.
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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 DECLSPEC SDL_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 0 on success or a negative error code on failure; call
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* SDL_GetError() for more information.
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*
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* \since This function is available since SDL 3.0.0.
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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 DECLSPEC int SDLCALL SDL_SetPrimarySelectionText(const char *text);
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/**
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* Get UTF-8 text from the primary selection, which must be freed with
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* SDL_free().
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*
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* This functions returns empty string if there was not enough memory left for
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* 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. Caller must
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* call SDL_free() on the returned pointer when done with it (even if
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* there was an error).
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*
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* \since This function is available since SDL 3.0.0.
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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 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 SDL_TRUE if the primary selection has text, or SDL_FALSE if it
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* does not.
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*
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* \since This function is available since SDL 3.0.0.
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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 DECLSPEC SDL_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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* \param size The length of the returned data
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* \param mime_type The requested mime-type
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* \param userdata A pointer to provided user data
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* \returns a pointer to the data for the provided mime-type. Returning NULL or
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* setting length to 0 will cause no data to be sent to the "receiver". It is
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* up to the receiver to handle this. Essentially returning no data is more or
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* less undefined behavior and may cause breakage in receiving applications.
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* The returned data will not be freed so it needs to be retained and dealt
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* with internally.
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*
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* \since This function is available since SDL 3.0.0.
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*
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* \sa SDL_SetClipboardData
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*/
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typedef void *(SDLCALL *SDL_ClipboardDataCallback)(size_t *size, const char *mime_type, 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 userdata submitted to this function needs to be freed manually. The
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* following scenarios need to be handled:
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*
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* - When the programs clipboard is replaced (cancelled)
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* SDL_EVENT_CLIPBOARD_CANCELLED
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* - Before calling SDL_Quit()
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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 mime_count The number of mime-types in the mime_types list
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* \param mime_types A list of mime-types that are being offered
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* \param userdata An opaque pointer that will be forwarded to the callback
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* \returns 0 on success or a negative error code on failure; call
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* SDL_GetError() for more information.
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*
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* \since This function is available since SDL 3.0.0.
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*
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* \sa SDL_ClipboardDataCallback
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* \sa SDL_GetClipboardUserdata
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* \sa SDL_SetClipboardData
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* \sa SDL_GetClipboardData
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* \sa SDL_HasClipboardData
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*/
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extern DECLSPEC int SDLCALL SDL_SetClipboardData(SDL_ClipboardDataCallback callback, size_t mime_count,
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const char **mime_types, void *userdata);
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/**
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* Retrieve previously set userdata if any.
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*
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* \returns a pointer to the data or NULL if no data exists
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*
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* \since This function is available since SDL 3.0.0.
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*/
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extern DECLSPEC void *SDLCALL SDL_GetClipboardUserdata(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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* \param length Length of the data
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* \param mime_type The mime type to read from the clipboard
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* \returns the retrieved data buffer or NULL on failure; call SDL_GetError()
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* for more information. Caller must call SDL_free() on the returned
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* pointer when done with it.
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*
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* \since This function is available since SDL 3.0.0.
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*
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* \sa SDL_SetClipboardData
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*/
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extern DECLSPEC void *SDLCALL SDL_GetClipboardData(size_t *length, const char *mime_type);
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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 SDL_TRUE if there exists data in clipboard for the provided mime
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* type, SDL_FALSE if it does not.
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*
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* \since This function is available since SDL 3.0.0.
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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 DECLSPEC SDL_bool SDLCALL SDL_HasClipboardData(const char *mime_type);
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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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