Added example
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@ -110,6 +110,9 @@ Function and type names should be prefixed with `wlr_submodule_` (e.g. `struct
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wlr_drm_plane`, `wlr_output_set_cursor`). For static functions and types local
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wlr_drm_plane`, `wlr_output_set_cursor`). For static functions and types local
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to a file, the names chosen aren't as important.
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to a file, the names chosen aren't as important.
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For include guards, use the header's filename relative to include. Uppercase
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all of the characters, and replace any invalid characters with an underscore.
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### Construction/Destruction Functions
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### Construction/Destruction Functions
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For functions that are responsible for constructing and destructing an object,
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For functions that are responsible for constructing and destructing an object,
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@ -134,6 +137,64 @@ Try to keep the use of macros to a minimum, especially if a function can do the
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job. If you do need to use them, try to keep them close to where they're being
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job. If you do need to use them, try to keep them close to where they're being
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used and `#undef` them after.
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used and `#undef` them after.
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## Meson Coding Style
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## Example
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The Meson style is similar to the C style, but indentations are 2 spaces.
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```c
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struct wlr_backend *wlr_backend_autocreate(struct wl_display *display) {
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struct wlr_backend *backend;
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if (getenv("WAYLAND_DISPLAY") || getenv("_WAYLAND_DISPLAY")) {
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backend = attempt_wl_backend(display);
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if (backend) {
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return backend;
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}
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}
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const char *x11_display = getenv("DISPLAY");
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if (x11_display) {
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return wlr_x11_backend_create(display, x11_display);
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}
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// Attempt DRM+libinput
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struct wlr_session *session = wlr_session_create(display);
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if (!session) {
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wlr_log(L_ERROR, "Failed to start a DRM session");
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return NULL;
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}
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int gpu = wlr_session_find_gpu(session);
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if (gpu == -1) {
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wlr_log(L_ERROR, "Failed to open DRM device");
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goto error_session;
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}
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backend = wlr_multi_backend_create(session);
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if (!backend) {
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goto error_gpu;
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}
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struct wlr_backend *libinput = wlr_libinput_backend_create(display, session);
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if (!libinput) {
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goto error_multi;
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}
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struct wlr_backend *drm = wlr_drm_backend_create(display, session, gpu);
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if (!drm) {
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goto error_libinput;
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}
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wlr_multi_backend_add(backend, libinput);
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wlr_multi_backend_add(backend, drm);
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return backend;
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error_libinput:
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wlr_backend_destroy(libinput);
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error_multi:
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wlr_backend_destroy(backend);
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error_gpu:
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wlr_session_close_file(session, gpu);
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error_session:
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wlr_session_destroy(session);
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return NULL;
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}
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```
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