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SDL/include/SDL_clipboard.h

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Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
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/*
Simple DirectMedia Layer
Updated copyright for 2022
2022-01-03 10:40:00 -07:00
Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org>
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
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This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/**
* \file SDL_clipboard.h
*
* Include file for SDL clipboard handling
*/
Renaming of guard header names to quiet -Wreserved-id-macro Patch contributed by Sylvain
2016-11-20 22:34:54 -07:00
#ifndef SDL_clipboard_h_
#define SDL_clipboard_h_
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
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#include "SDL_stdinc.h"
#include "begin_code.h"
/* Set up for C function definitions, even when using C++ */
#ifdef __cplusplus
extern "C" {
#endif
/* Function prototypes */
/**
First shot at merging the wiki documentation into the headers.
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* Put UTF-8 text into the clipboard.
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
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*
First shot at merging the wiki documentation into the headers.
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* \param text the text to store in the clipboard
* \returns 0 on success or a negative error code on failure; call
* SDL_GetError() for more information.
*
Sync wiki -> header
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* \since This function is available since SDL 2.0.0.
*
First shot at merging the wiki documentation into the headers.
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* \sa SDL_GetClipboardText
* \sa SDL_HasClipboardText
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
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*/
extern DECLSPEC int SDLCALL SDL_SetClipboardText(const char *text);
/**
First shot at merging the wiki documentation into the headers.
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* Get UTF-8 text from the clipboard, which must be freed with SDL_free().
*
Sync wiki -> header
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* This functions returns empty string if there was not enough memory left for
* a copy of the clipboard's content.
First shot at merging the wiki documentation into the headers.
2021-03-21 12:18:39 -06:00
*
Sync wiki -> header
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* \returns the clipboard text on success or an empty string on failure; call
First shot at merging the wiki documentation into the headers.
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* SDL_GetError() for more information. Caller must call SDL_free()
Sync wiki -> header
2021-09-28 11:03:06 -06:00
* on the returned pointer when done with it (even if there was an
* error).
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
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*
Sync wiki -> header
2021-10-26 19:36:05 -06:00
* \since This function is available since SDL 2.0.0.
*
First shot at merging the wiki documentation into the headers.
2021-03-21 12:18:39 -06:00
* \sa SDL_HasClipboardText
* \sa SDL_SetClipboardText
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 09:33:46 -06:00
*/
extern DECLSPEC char * SDLCALL SDL_GetClipboardText(void);
/**
First shot at merging the wiki documentation into the headers.
2021-03-21 12:18:39 -06:00
* Query whether the clipboard exists and contains a non-empty text string.
*
* \returns SDL_TRUE if the clipboard has text, or SDL_FALSE if it does not.
*
* \since This function is available since SDL 2.0.0.
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
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*
First shot at merging the wiki documentation into the headers.
2021-03-21 12:18:39 -06:00
* \sa SDL_GetClipboardText
* \sa SDL_SetClipboardText
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 09:33:46 -06:00
*/
extern DECLSPEC SDL_bool SDLCALL SDL_HasClipboardText(void);
Add support for X11 primary selection (#6132) X11 has a so-called primary selection, which you can use by marking text and middle-clicking elsewhere to copy the marked text. There are 3 new API functions in `SDL_clipboard.h`, which work exactly like their clipboard equivalents. ## Test Instructions * Run the tests (just a copy of the clipboard tests): `$ ./test/testautomation --filter Clipboard` * Build and run this small application: <details> ```C #include <SDL.h> #include <unistd.h> #include <stdbool.h> #include <stdio.h> #include <stdlib.h> #include <time.h> void print_error(const char *where) { const char *errstr = SDL_GetError(); if (errstr == NULL || errstr[0] == '\0') return; fprintf(stderr, "SDL Error after '%s': %s\n", where, errstr); SDL_ClearError(); } int main() { char text_buf[256]; srand(time(NULL)); SDL_Init(SDL_INIT_VIDEO); print_error("SDL_INIT()"); SDL_Window *window = SDL_CreateWindow("Primary Selection Test", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 400, 400, SDL_WINDOW_SHOWN); print_error("SDL_CreateWindow()"); SDL_Renderer *renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED); print_error("SDL_CreateRenderer()"); bool quit = false; unsigned int do_render = 0; while (!quit) { SDL_Event event; while (SDL_PollEvent(&event)) { print_error("SDL_PollEvent()"); switch (event.type) { case SDL_QUIT: { quit = true; break; } case SDL_KEYDOWN: { switch (event.key.keysym.sym) { case SDLK_ESCAPE: case SDLK_q: quit = true; break; case SDLK_c: snprintf(text_buf, sizeof(text_buf), "foo%d", rand()); SDL_SetClipboardText(text_buf); print_error("SDL_SetClipboardText()"); printf("clipboard: set_to=\"%s\"\n", text_buf); break; case SDLK_v: { printf("clipboard: has=%d, ", SDL_HasClipboardText()); print_error("SDL_HasClipboardText()"); char *text = SDL_GetClipboardText(); print_error("SDL_GetClipboardText()"); printf("text=\"%s\"\n", text); SDL_free(text); break; } case SDLK_d: snprintf(text_buf, sizeof(text_buf), "bar%d", rand()); SDL_SetPrimarySelectionText(text_buf); print_error("SDL_SetPrimarySelectionText()"); printf("primselec: set_to=\"%s\"\n", text_buf); break; case SDLK_f: { printf("primselec: has=%d, ", SDL_HasPrimarySelectionText()); print_error("SDL_HasPrimarySelectionText()"); char *text = SDL_GetPrimarySelectionText(); print_error("SDL_GetPrimarySelectionText()"); printf("text=\"%s\"\n", text); SDL_free(text); break; } default: break; } break; } default: { break; }} } // create less noise with WAYLAND_DEBUG=1 if (do_render == 0) { SDL_RenderPresent(renderer); print_error("SDL_RenderPresent()"); } do_render += 1; usleep(12000); } SDL_DestroyRenderer(renderer); SDL_DestroyWindow(window); SDL_Quit(); print_error("quit"); return 0; } ``` </details> * Use c,v,d,f to get and set the clipboard and primary selection. * Mark text and middle-click also in other applications. * For wayland under x: * `$ mutter --wayland --no-x11 --nested` * `$ XDG_SESSION_TYPE=wayland SDL_VIDEODRIVER=wayland ./<path_to_test_appl_binary>`
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/**
* Put UTF-8 text into the primary selection.
*
* \param text the text to store in the primary selection
* \returns 0 on success or a negative error code on failure; call
* SDL_GetError() for more information.
*
* \since This function is available since SDL 2.25.0.
*
* \sa SDL_GetPrimarySelectionText
* \sa SDL_HasPrimarySelectionText
*/
extern DECLSPEC int SDLCALL SDL_SetPrimarySelectionText(const char *text);
/**
* Get UTF-8 text from the primary selection, which must be freed with SDL_free().
*
* This functions returns empty string if there was not enough memory left for
* a copy of the primary selection's content.
*
* \returns the primary selection text on success or an empty string on failure;
* call SDL_GetError() for more information. Caller must call SDL_free()
* on the returned pointer when done with it (even if there was an
* error).
*
* \since This function is available since SDL 2.25.0.
*
* \sa SDL_HasPrimarySelectionText
* \sa SDL_SetPrimarySelectionText
*/
extern DECLSPEC char * SDLCALL SDL_GetPrimarySelectionText(void);
/**
* Query whether the primary selection exists and contains a non-empty text
* string.
*
* \returns SDL_TRUE if the primary selection has text, or SDL_FALSE if it does
* not.
*
* \since This function is available since SDL 2.25.0.
*
* \sa SDL_GetPrimarySelectionText
* \sa SDL_SetPrimarySelectionText
*/
extern DECLSPEC SDL_bool SDLCALL SDL_HasPrimarySelectionText(void);
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
2015-06-21 09:33:46 -06:00
/* Ends C function definitions when using C++ */
#ifdef __cplusplus
}
#endif
#include "close_code.h"
Renaming of guard header names to quiet -Wreserved-id-macro Patch contributed by Sylvain
2016-11-20 22:34:54 -07:00
#endif /* SDL_clipboard_h_ */
Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
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/* vi: set ts=4 sw=4 expandtab: */