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ac5b9bc4ee
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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|---|---|---|
| .. | ||
| begin_code.h | ||
| close_code.h | ||
| SDL.h | ||
| SDL_assert.h | ||
| SDL_atomic.h | ||
| SDL_audio.h | ||
| SDL_bits.h | ||
| SDL_blendmode.h | ||
| SDL_clipboard.h | ||
| SDL_config.h | ||
| SDL_config.h.cmake | ||
| SDL_config.h.in | ||
| SDL_config_android.h | ||
| SDL_config_emscripten.h | ||
| SDL_config_iphoneos.h | ||
| SDL_config_macosx.h | ||
| SDL_config_minimal.h | ||
| SDL_config_ngage.h | ||
| SDL_config_os2.h | ||
| SDL_config_pandora.h | ||
| SDL_config_windows.h | ||
| SDL_config_wingdk.h | ||
| SDL_config_winrt.h | ||
| SDL_config_xbox.h | ||
| SDL_copying.h | ||
| SDL_cpuinfo.h | ||
| SDL_egl.h | ||
| SDL_endian.h | ||
| SDL_error.h | ||
| SDL_events.h | ||
| SDL_filesystem.h | ||
| SDL_gamecontroller.h | ||
| SDL_gesture.h | ||
| SDL_guid.h | ||
| SDL_haptic.h | ||
| SDL_hidapi.h | ||
| SDL_hints.h | ||
| SDL_joystick.h | ||
| SDL_keyboard.h | ||
| SDL_keycode.h | ||
| SDL_loadso.h | ||
| SDL_locale.h | ||
| SDL_log.h | ||
| SDL_main.h | ||
| SDL_messagebox.h | ||
| SDL_metal.h | ||
| SDL_misc.h | ||
| SDL_mouse.h | ||
| SDL_mutex.h | ||
| SDL_name.h | ||
| SDL_opengl.h | ||
| SDL_opengl_glext.h | ||
| SDL_opengles.h | ||
| SDL_opengles2.h | ||
| SDL_opengles2_gl2.h | ||
| SDL_opengles2_gl2ext.h | ||
| SDL_opengles2_gl2platform.h | ||
| SDL_opengles2_khrplatform.h | ||
| SDL_pixels.h | ||
| SDL_platform.h | ||
| SDL_power.h | ||
| SDL_quit.h | ||
| SDL_rect.h | ||
| SDL_render.h | ||
| SDL_revision.h | ||
| SDL_revision.h.cmake | ||
| SDL_rwops.h | ||
| SDL_scancode.h | ||
| SDL_sensor.h | ||
| SDL_shape.h | ||
| SDL_stdinc.h | ||
| SDL_surface.h | ||
| SDL_system.h | ||
| SDL_syswm.h | ||
| SDL_test.h | ||
| SDL_test_assert.h | ||
| SDL_test_common.h | ||
| SDL_test_compare.h | ||
| SDL_test_crc32.h | ||
| SDL_test_font.h | ||
| SDL_test_fuzzer.h | ||
| SDL_test_harness.h | ||
| SDL_test_images.h | ||
| SDL_test_log.h | ||
| SDL_test_md5.h | ||
| SDL_test_memory.h | ||
| SDL_test_random.h | ||
| SDL_thread.h | ||
| SDL_timer.h | ||
| SDL_touch.h | ||
| SDL_types.h | ||
| SDL_version.h | ||
| SDL_video.h | ||
| SDL_vulkan.h | ||