diff options
Diffstat (limited to 'backend/x11/output.c')
| -rw-r--r-- | backend/x11/output.c | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/backend/x11/output.c b/backend/x11/output.c new file mode 100644 index 00000000..f039baad --- /dev/null +++ b/backend/x11/output.c @@ -0,0 +1,170 @@ +#include <stdlib.h> +#include <wlr/interfaces/wlr_output.h> +#include <wlr/util/log.h> +#include "backend/x11.h" +#include "util/signal.h" + +static int signal_frame(void *data) { + struct wlr_x11_output *output = data; + wlr_output_send_frame(&output->wlr_output); + wl_event_source_timer_update(output->frame_timer, output->frame_delay); + return 0; +} + +static void parse_xcb_setup(struct wlr_output *output, xcb_connection_t *xcb_conn) { + const xcb_setup_t *xcb_setup = xcb_get_setup(xcb_conn); + + snprintf(output->make, sizeof(output->make), "%.*s", + xcb_setup_vendor_length(xcb_setup), + xcb_setup_vendor(xcb_setup)); + snprintf(output->model, sizeof(output->model), "%"PRIu16".%"PRIu16, + xcb_setup->protocol_major_version, + xcb_setup->protocol_minor_version); +} + +static bool output_set_custom_mode(struct wlr_output *wlr_output, int32_t width, + int32_t height, int32_t refresh) { + struct wlr_x11_output *output = (struct wlr_x11_output *)wlr_output; + struct wlr_x11_backend *x11 = output->x11; + + wlr_output_update_custom_mode(&output->wlr_output, wlr_output->width, + wlr_output->height, refresh); + output->frame_delay = 1000000 / refresh; + + const uint32_t values[] = { width, height }; + xcb_configure_window(x11->xcb_conn, output->win, + XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT, values); + return true; +} + +static void output_transform(struct wlr_output *wlr_output, + enum wl_output_transform transform) { + struct wlr_x11_output *output = (struct wlr_x11_output *)wlr_output; + output->wlr_output.transform = transform; +} + +static void output_destroy(struct wlr_output *wlr_output) { + struct wlr_x11_output *output = (struct wlr_x11_output *)wlr_output; + struct wlr_x11_backend *x11 = output->x11; + + wl_list_remove(&output->link); + wl_event_source_remove(output->frame_timer); + eglDestroySurface(x11->egl.display, output->surf); + xcb_destroy_window(x11->xcb_conn, output->win); + free(output); +} + +static bool output_make_current(struct wlr_output *wlr_output, int *buffer_age) { + struct wlr_x11_output *output = (struct wlr_x11_output *)wlr_output; + struct wlr_x11_backend *x11 = output->x11; + + return wlr_egl_make_current(&x11->egl, output->surf, buffer_age); +} + +static bool output_swap_buffers(struct wlr_output *wlr_output, + pixman_region32_t *damage) { + struct wlr_x11_output *output = (struct wlr_x11_output *)wlr_output; + struct wlr_x11_backend *x11 = output->x11; + + return wlr_egl_swap_buffers(&x11->egl, output->surf, damage); +} + +static const struct wlr_output_impl output_impl = { + .set_custom_mode = output_set_custom_mode, + .transform = output_transform, + .destroy = output_destroy, + .make_current = output_make_current, + .swap_buffers = output_swap_buffers, +}; + +struct wlr_x11_output *x11_output_create(struct wlr_x11_backend *x11) { + struct wlr_x11_output *output = calloc(1, sizeof(struct wlr_x11_output)); + if (output == NULL) { + return NULL; + } + output->x11 = x11; + output->frame_delay = 16; // 60 Hz + + struct wlr_output *wlr_output = &output->wlr_output; + wlr_output_init(wlr_output, &x11->backend, &output_impl, x11->wl_display); + + snprintf(wlr_output->name, sizeof(wlr_output->name), "X11-1"); + parse_xcb_setup(wlr_output, x11->xcb_conn); + + uint32_t mask = XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK; + uint32_t values[2] = { + x11->screen->white_pixel, + XCB_EVENT_MASK_EXPOSURE | + XCB_EVENT_MASK_KEY_PRESS | XCB_EVENT_MASK_KEY_RELEASE | + XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE | + XCB_EVENT_MASK_POINTER_MOTION | + XCB_EVENT_MASK_STRUCTURE_NOTIFY + }; + output->win = xcb_generate_id(x11->xcb_conn); + xcb_create_window(x11->xcb_conn, XCB_COPY_FROM_PARENT, output->win, + x11->screen->root, 0, 0, 1024, 768, 1, XCB_WINDOW_CLASS_INPUT_OUTPUT, + x11->screen->root_visual, mask, values); + + output->surf = wlr_egl_create_surface(&x11->egl, &output->win); + if (!output->surf) { + wlr_log(L_ERROR, "Failed to create EGL surface"); + free(output); + return NULL; + } + + xcb_change_property(x11->xcb_conn, XCB_PROP_MODE_REPLACE, output->win, + x11->atoms.wm_protocols, XCB_ATOM_ATOM, 32, 1, + &x11->atoms.wm_delete_window); + + char title[32]; + if (snprintf(title, sizeof(title), "wlroots - %s", wlr_output->name)) { + xcb_change_property(x11->xcb_conn, XCB_PROP_MODE_REPLACE, output->win, + x11->atoms.net_wm_name, x11->atoms.utf8_string, 8, + strlen(title), title); + } + + xcb_map_window(x11->xcb_conn, output->win); + xcb_flush(x11->xcb_conn); + + struct wl_event_loop *ev = wl_display_get_event_loop(x11->wl_display); + output->frame_timer = wl_event_loop_add_timer(ev, signal_frame, output); + + wl_event_source_timer_update(output->frame_timer, output->frame_delay); + wlr_output_update_enabled(wlr_output, true); + + wl_list_insert(&x11->outputs, &output->link); + wlr_signal_emit_safe(&x11->backend.events.new_output, wlr_output); + + return output; +} + +void x11_output_handle_configure_notify(struct wlr_x11_output *output, + xcb_configure_notify_event_t *ev) { + struct wlr_x11_backend *x11 = output->x11; + + wlr_output_update_custom_mode(&output->wlr_output, ev->width, + ev->height, output->wlr_output.refresh); + + // Move the pointer to its new location + xcb_query_pointer_cookie_t cookie = + xcb_query_pointer(x11->xcb_conn, output->win); + xcb_query_pointer_reply_t *pointer = + xcb_query_pointer_reply(x11->xcb_conn, cookie, NULL); + if (!pointer) { + return; + } + + struct wlr_event_pointer_motion_absolute abs = { + .device = &x11->pointer_dev, + .time_msec = x11->time, + .x = (double)pointer->root_x / output->wlr_output.width, + .y = (double)pointer->root_y / output->wlr_output.height, + }; + + wlr_signal_emit_safe(&x11->pointer.events.motion_absolute, &abs); + free(pointer); +} + +bool wlr_output_is_x11(struct wlr_output *wlr_output) { + return wlr_output->impl == &output_impl; +} |